moved from trunk.

git-svn-id: file:///svn/unbound/tags/release-0.9@947 be551aaa-1e26-0410-a405-d3ace91eadb9

Makefile.in

@@ -1,9 +1,13 @@
 # Copyright 2007 NLnet Labs
 # See the file LICENSE for the license
-# 
-# Standard installation pathnames
 
-QUIET=yes
+debug_enabled=@debug_enabled@
+ifeq ($(debug_enabled),yes)
+  QUIET=yes
+else
+  QUIET=no
+endif
+
 ifeq "$(QUIET)" "yes"
   Q=@
   INFO=@echo
@@ -33,7 +37,7 @@ configfile=@ub_conf_file@
 YACC=@YACC@
 LEX=@LEX@
 CC=@CC@
-CPPFLAGS=-I$(srcdir) @CPPFLAGS@ @DEFS@
+CPPFLAGS=-I$(srcdir) -I. @CPPFLAGS@ @DEFS@
 CFLAGS=@CFLAGS@
 LDFLAGS=@LDFLAGS@
 LIBS=@LIBS@
@@ -62,54 +66,71 @@ COMMON_OBJ=$(addprefix $(BUILD),$(COMMON_SRC:.c=.o))
 COMPAT_OBJ=$(addprefix $(BUILD)compat/,$(LIBOBJS))
 UNITTEST_SRC=$(patsubst $(srcdir)/%,%, \
 	$(wildcard $(srcdir)/testcode/unit*.c)) \
-	testcode/readhex.c testcode/ldns-testpkts.c checkconf/worker_cb.c \
+	testcode/readhex.c testcode/ldns-testpkts.c smallapp/worker_cb.c \
 	$(COMMON_SRC)
 UNITTEST_OBJ=$(addprefix $(BUILD),$(UNITTEST_SRC:.c=.o)) $(COMPAT_OBJ)
 DAEMON_SRC=$(patsubst $(srcdir)/%,%, $(wildcard $(srcdir)/daemon/*.c)) \
 	$(COMMON_SRC)
 DAEMON_OBJ=$(addprefix $(BUILD),$(DAEMON_SRC:.c=.o)) $(COMPAT_OBJ)
-CHECKCONF_SRC=checkconf/unbound-checkconf.c checkconf/worker_cb.c $(COMMON_SRC)
+CHECKCONF_SRC=smallapp/unbound-checkconf.c smallapp/worker_cb.c $(COMMON_SRC)
 CHECKCONF_OBJ=$(addprefix $(BUILD),$(CHECKCONF_SRC:.c=.o)) $(COMPAT_OBJ)
+HOST_SRC=smallapp/unbound-host.c
+HOST_OBJ=$(addprefix $(BUILD),$(HOST_SRC:.c=.o)) $(COMPAT_OBJ)
 TESTBOUND_SRC=testcode/testbound.c testcode/ldns-testpkts.c \
-	daemon/worker.c daemon/daemon.c daemon/stats.c testcode/replay.c \
-	testcode/fake_event.c $(filter-out util/netevent.c \
+	daemon/worker.c daemon/acl_list.c daemon/daemon.c daemon/stats.c \
+	testcode/replay.c testcode/fake_event.c $(filter-out util/netevent.c \
 	services/listen_dnsport.c services/outside_network.c, $(COMMON_SRC))
 TESTBOUND_OBJ=$(addprefix $(BUILD),$(TESTBOUND_SRC:.c=.o)) $(COMPAT_OBJ)
-LOCKVERIFY_SRC=testcode/lock_verify.c checkconf/worker_cb.c $(COMMON_SRC)
+LOCKVERIFY_SRC=testcode/lock_verify.c smallapp/worker_cb.c $(COMMON_SRC)
 LOCKVERIFY_OBJ=$(addprefix $(BUILD),$(LOCKVERIFY_SRC:.c=.o)) $(COMPAT_OBJ)
-PKTVIEW_SRC=testcode/pktview.c testcode/readhex.c checkconf/worker_cb.c \
+PKTVIEW_SRC=testcode/pktview.c testcode/readhex.c smallapp/worker_cb.c \
 	$(COMMON_SRC)
 PKTVIEW_OBJ=$(addprefix $(BUILD),$(PKTVIEW_SRC:.c=.o)) $(COMPAT_OBJ)
-SIGNIT_SRC=testcode/signit.c checkconf/worker_cb.c $(COMMON_SRC)
+SIGNIT_SRC=testcode/signit.c smallapp/worker_cb.c $(COMMON_SRC)
 SIGNIT_OBJ=$(addprefix $(BUILD),$(SIGNIT_SRC:.c=.o)) $(COMPAT_OBJ)
-MEMSTATS_SRC=testcode/memstats.c checkconf/worker_cb.c $(COMMON_SRC)
+MEMSTATS_SRC=testcode/memstats.c smallapp/worker_cb.c $(COMMON_SRC)
 MEMSTATS_OBJ=$(addprefix $(BUILD),$(MEMSTATS_SRC:.c=.o)) $(COMPAT_OBJ)
-ALL_SRC=$(COMMON_SRC) $(UNITTEST_SRC) $(DAEMON_SRC) \
+ASYNCLOOK_SRC=testcode/asynclook.c
+ASYNCLOOK_OBJ=$(addprefix $(BUILD),$(ASYNCLOOK_SRC:.c=.o)) $(COMPAT_OBJ)
+STREAMTCP_SRC=testcode/streamtcp.c smallapp/worker_cb.c $(COMMON_SRC)
+STREAMTCP_OBJ=$(addprefix $(BUILD),$(STREAMTCP_SRC:.c=.o)) $(COMPAT_OBJ)
+LIBUNBOUND_SRC=$(patsubst $(srcdir)/%,%, \
+	$(wildcard $(srcdir)/libunbound/*.c) $(COMMON_SRC))
+LIBUNBOUND_OBJ=$(addprefix $(BUILD),$(LIBUNBOUND_SRC:.c=.o)) $(COMPAT_OBJ)
+ALL_SRC=$(sort $(COMMON_SRC) $(UNITTEST_SRC) $(DAEMON_SRC) \
 	$(TESTBOUND_SRC) $(LOCKVERIFY_SRC) $(PKTVIEW_SRC) $(SIGNIT_SRC) \
-	$(MEMSTATS_SRC) $(CHECKCONF_SRC)
+	$(MEMSTATS_SRC) $(CHECKCONF_SRC) $(LIBUNBOUND_SRC) $(HOST_SRC) \
+	$(ASYNCLOOK_SRC) $(STREAMTCP_SRC))
 ALL_OBJ=$(addprefix $(BUILD),$(ALL_SRC:.c=.o) \
 	$(addprefix compat/,$(LIBOBJS))) $(COMPAT_OBJ)
 
 COMPILE=$(LIBTOOL) --tag=CC --mode=compile $(CC) $(CPPFLAGS) $(CFLAGS)
 LINK=$(LIBTOOL) --tag=CC --mode=link $(CC) $(staticexe) $(RUNTIME_PATH) $(CFLAGS) $(LDFLAGS)
-LINK_LIB=$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) $(LDFLAGS) -release $(VERSION)
+LINK_LIB=$(LIBTOOL) --tag=CC --mode=link $(CC) $(RUNTIME_PATH) $(CFLAGS) $(LDFLAGS) $(staticexe) -release $(VERSION) -no-undefined
 
-.PHONY:	clean realclean doc lint all install uninstall tests test download_ldns strip
+.PHONY:	clean realclean doc lint all install uninstall tests test download_ldns strip lib
 
 $(BUILD)%.o:    $(srcdir)/%.c 
 	$(INFO) Build $<
 	@if test ! -z "$(ldnsdir)" -a ! -e $(ldnsdir)/include/ldns/ldns.h; \
 		then (cd $(ldnsdir); $(MAKE) copy-headers); fi
-	@if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
+	@-if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
 	$Q$(COMPILE) -c $< -o $@
 
-all:	$(COMMON_OBJ) unbound unbound-checkconf
+all:	$(COMMON_OBJ) unbound unbound-checkconf lib unbound-host
 
-tests:	all unittest testbound lock-verify pktview signit memstats
+tests:	all unittest testbound lock-verify pktview signit memstats \
+	asynclook streamtcp
 
 test:	tests
 	bash testcode/do-tests.sh
 
+lib:	libunbound.la
+
+libunbound.la:	$(LIBUNBOUND_OBJ)
+	$(INFO) Link $@
+	$Q$(LINK_LIB) --export-symbols $(srcdir)/libunbound/ubsyms.def -o $@ $(sort $(LIBUNBOUND_OBJ:.o=.lo)) -rpath $(libdir) $(LIBS)
+
 ifeq ($(patsubst ldns-src%,ldns-src,$(ldnsdir)),ldns-src)
 ldnslib=$(ldnsdir)/lib/libldns.a
 $(ldnslib):
@@ -127,6 +148,10 @@ unbound-checkconf:	$(CHECKCONF_OBJ) $(ldnslib)
 	$(INFO) Link $@
 	$Q$(LINK) -o $@ $(sort $(CHECKCONF_OBJ)) $(LIBS)
 
+unbound-host:	$(HOST_OBJ) libunbound.la $(ldnslib)
+	$(INFO) Link $@
+	$Q$(LINK) -o $@ $(sort $(HOST_OBJ)) -L. -L.libs -lunbound $(LIBS)
+
 unittest:	$(UNITTEST_OBJ) $(ldnslib)
 	$(INFO) Link $@
 	$Q$(LINK) -o $@ $(sort $(UNITTEST_OBJ)) $(LIBS)
@@ -151,6 +176,14 @@ memstats:	$(MEMSTATS_OBJ) $(ldnslib)
 	$(INFO) Link $@
 	$Q$(LINK) -o $@ $(sort $(MEMSTATS_OBJ)) $(LIBS)
 
+asynclook:	$(ASYNCLOOK_OBJ) $(ldnslib) libunbound.la
+	$(INFO) Link $@
+	$Q$(LINK) -o $@ $(sort $(ASYNCLOOK_OBJ)) $(LIBS) -L. -L.libs -lunbound
+
+streamtcp:	$(STREAMTCP_OBJ) $(ldnslib)
+	$(INFO) Link $@
+	$Q$(LINK) -o $@ $(sort $(STREAMTCP_OBJ)) $(LIBS)
+
 #testcode/ldns-testpkts.c:	$(ldnsdir)/examples/ldns-testpkts.c \
 #			$(ldnsdir)/examples/ldns-testpkts.h
 #	cp $(ldnsdir)/examples/ldns-testpkts.c testcode/ldns-testpkts.c
@@ -162,14 +195,14 @@ util/configlexer.c:  $(srcdir)/util/configlexer.lex util/configparser.h
 ifeq "$(strip $(LEX))" ":"
 	$Qecho "rebuild lexer, but no lex program, skipped"
 else
-	@if test ! -d util; then $(INSTALL) -d util; fi
+	@-if test ! -d util; then $(INSTALL) -d util; fi
 	$Qecho "#include \"util/configyyrename.h\"" > $@
 	$Q$(LEX) -t $< >> $@
 endif
 
 util/configparser.c util/configparser.h:  $(srcdir)/util/configparser.y
 	$(INFO) Yacc $<
-	@if test ! -d util; then $(INSTALL) -d util; fi
+	@-if test ! -d util; then $(INSTALL) -d util; fi
 	$Q$(YACC) -d -o util/configparser.c $<
 
 clean:
@@ -185,7 +218,7 @@ realclean: clean
 
 $(BUILD)%.lint:    $(srcdir)/%.c 
 	$(INFO) Lint $<
-	@if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
+	@-if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
 	$Q$(LINT) $(LINTFLAGS) -I. -I$(srcdir) -I$(ldnsdir)/include $<
 	$Qtouch $@
 
@@ -195,29 +228,37 @@ tags:	$(srcdir)/*.[ch] $(srcdir)/*/*.[ch]
 	ctags  -f $(srcdir)/tags $(srcdir)/*.[ch] $(srcdir)/*/*.[ch]
 
 doc:
-ifdef doxygen
-	$(doxygen) $(srcdir)/doc/unbound.doxygen
-endif
+	if test -n "$(doxygen)"; then \
+		$(doxygen) $(srcdir)/doc/unbound.doxygen; fi
 
 strip:
 	strip unbound
 	strip unbound-checkconf
+	strip unbound-host
 
 install:
-	$(INSTALL) -d $(bindir)
-	$(INSTALL) -d $(mandir)
-	$(INSTALL) -d $(mandir)/man8
-	$(INSTALL) -d $(mandir)/man5
+	$(INSTALL) -m 755 -d $(bindir)
+	$(INSTALL) -m 755 -d $(mandir)
+	$(INSTALL) -m 755 -d $(mandir)/man8
+	$(INSTALL) -m 755 -d $(mandir)/man5
+	$(INSTALL) -m 755 -d $(libdir)
+	$(INSTALL) -m 755 -d $(includedir)
 	$(LIBTOOL) --mode=install cp unbound $(bindir)/unbound
 	$(LIBTOOL) --mode=install cp unbound-checkconf $(bindir)/unbound-checkconf
+	$(LIBTOOL) --mode=install cp unbound-host $(bindir)/unbound-host
 	$(INSTALL) -c -m 644 $(srcdir)/doc/unbound.8 $(mandir)/man8
 	$(INSTALL) -c -m 644 $(srcdir)/doc/unbound-checkconf.8 $(mandir)/man8
 	$(INSTALL) -c -m 644 $(srcdir)/doc/unbound.conf.5 $(mandir)/man5
 	if test ! -e $(configfile); then $(INSTALL) -d `dirname $(configfile)`; $(INSTALL) -c -m 644 $(srcdir)/doc/example.conf $(configfile); fi
+	$(LIBTOOL) --mode=install cp $(srcdir)/libunbound/unbound.h $(includedir)/unbound.h
+	$(LIBTOOL) --mode=install cp libunbound.la $(libdir)
+	$(LIBTOOL) --mode=finish $(libdir)
 
 uninstall:
-	rm -f -- $(bindir)/unbound $(bindir)/unbound-checkconf
+	rm -f -- $(bindir)/unbound $(bindir)/unbound-checkconf $(bindir)/unbound-host
 	rm -f -- $(mandir)/man8/unbound.8 $(mandir)/man8/unbound-checkconf.8 $(mandir)/man5/unbound.conf.5
+	rm -f -- $(includedir)/unbound.h
+	$(LIBTOOL) --mode=uninstall rm -f $(libdir)/libunbound.la
 	@echo
 	@echo "You still need to remove `dirname $(configfile)` , $(configfile) by hand"
 
@@ -232,13 +273,15 @@ $(BUILD)%.d: $(srcdir)/%.c
 	$(INFO) Depend $<
 	@if test ! -z "$(ldnsdir)" -a ! -e $(ldnsdir)/include/ldns/ldns.h; \
 		then (cd $(ldnsdir); $(MAKE) copy-headers); fi
-	@if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
+	@-if test ! -d $(dir $@); then $(INSTALL) -d $(patsubst %/,%,$(dir $@)); fi
 	$Q$(SHELL) -ec '$(CC) -MM $(CPPFLAGS) $(CFLAGS) $< \
 	              | sed '\''s!\(.*\)\.o[ :]*!$(dir $@)\1.o $@ : !g'\'' > $@; \
 	              [ -s $@ ] || rm -f $@'
 
 ifneq ($(MAKECMDGOALS),clean)
 ifneq ($(MAKECMDGOALS),realclean)
+ifeq ($(debug_enabled),yes)
 -include $(addprefix $(BUILD),$(ALL_SRC:.c=.d))
 endif
 endif
+endif

README

@@ -0,0 +1,10 @@
+Unbound README
+* ./configure && make && make install
+* on BSDs and Solaris use gmake (GNU make).
+* If it complains that no libevent can be found; libevent is useful when
+  using many (10000) outgoing ports. By default 16 ports are used and the
+  builtin alternative is equally capable.
+* More detailed README, README.svn, README.tests in doc directory
+* manual pages can be found in doc directory, and are installed, unbound(8).
+* example configuration file doc/example.conf
+

config.h.in

@@ -57,14 +57,8 @@
 /* Define to 1 if you have the `crypto' library (-lcrypto). */
 #undef HAVE_LIBCRYPTO
 
-/* Define to 1 if you have the `nsl' library (-lnsl). */
-#undef HAVE_LIBNSL
-
-/* Define to 1 if you have the `rt' library (-lrt). */
-#undef HAVE_LIBRT
-
-/* Define to 1 if you have the `socket' library (-lsocket). */
-#undef HAVE_LIBSOCKET
+/* Define to 1 if you have the `ldns' library (-lldns). */
+#undef HAVE_LIBLDNS
 
 /* Define to 1 if your system has a GNU libc compatible `malloc' function, and
    to 0 otherwise. */
@@ -82,6 +76,9 @@
 /* Define to 1 if you have the <openssl/err.h> header file. */
 #undef HAVE_OPENSSL_ERR_H
 
+/* Define to 1 if you have the <openssl/rand.h> header file. */
+#undef HAVE_OPENSSL_RAND_H
+
 /* Define to 1 if you have the <openssl/ssl.h> header file. */
 #undef HAVE_OPENSSL_SSL_H
 
@@ -188,12 +185,12 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
-/* Define to 'int' or type of struct msghdr.msg_iovlen. */
-#undef TYPE_MSGIOVLEN
-
 /* use statistics for allocs and frees, for debug use */
 #undef UNBOUND_ALLOC_STATS
 
+/* define this to enable debug checks. */
+#undef UNBOUND_DEBUG
+
 /* Define if you want to use internal select based events */
 #undef USE_MINI_EVENT
 
@@ -287,6 +284,10 @@
 #undef vfork
 
 
+#ifndef UNBOUND_DEBUG
+#  define NDEBUG
+#endif
+
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
@@ -331,6 +332,10 @@
 #include <openssl/err.h>
 #endif
 
+#ifdef HAVE_OPENSSL_RAND_H
+#include <openssl/rand.h>
+#endif
+
 #ifdef HAVE_ATTR_FORMAT
 #  define ATTR_FORMAT(archetype, string_index, first_to_check) \
     __attribute__ ((format (archetype, string_index, first_to_check)))

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.57)
 
-AC_INIT(unbound, 0.6, unbound-bugs@nlnetlabs.nl, unbound)
+AC_INIT(unbound, 0.9, unbound-bugs@nlnetlabs.nl, unbound)
 
 CFLAGS=
 AC_AIX
@@ -119,6 +119,39 @@ CHECK_COMPILER_FLAG(O2, [CFLAGS="$CFLAGS -O2"])
 
 AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT])
 
+CHECK_COMPILER_FLAG_NEEDED(-std=c99 -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE,
+[
+#include "confdefs.h"
+#include <stdlib.h>
+#include <ctype.h>
+#include <sys/time.h>
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#include <unistd.h>
+#include <netdb.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+
+int test() {
+	int a;
+	char **opts = NULL;
+	struct timeval tv;
+	char *t;
+	time_t time = 0;
+	char *buf = NULL;
+	const char* str = NULL;
+	t = ctime_r(&time, buf);
+	tv.tv_usec = 10;
+	srandom(32);
+	a = getopt(2, opts, "a");
+	a = isascii(32);
+	str = gai_strerror(0);
+	return a;
+}
+], [CFLAGS="$CFLAGS -std=c99 -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"])
+
 CHECK_COMPILER_FLAG_NEEDED(-std=c99 -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE,
 [
 #include "confdefs.h"
@@ -223,10 +256,21 @@ int test() {
 CHECK_COMPILER_FLAG(xO4, [CFLAGS="$CFLAGS -xO4"])
 CHECK_COMPILER_FLAG(xtarget=generic, [CFLAGS="$CFLAGS -xtarget=generic"])
 # flag warnings.
-CHECK_COMPILER_FLAG(W, [CFLAGS="$CFLAGS -W"])
-CHECK_COMPILER_FLAG(Wall, [CFLAGS="$CFLAGS -Wall"])
-CHECK_COMPILER_FLAG(Wextra, [CFLAGS="$CFLAGS -Wextra"])
-CHECK_COMPILER_FLAG(Wdeclaration-after-statement, [CFLAGS="$CFLAGS -Wdeclaration-after-statement"])
+AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [Enable debug warnings, asserts, makefile-dependencies]))
+debug_enabled="$enable_debug"
+AC_SUBST(debug_enabled)
+case "$enable_debug" in
+        yes)
+		CHECK_COMPILER_FLAG(W, [CFLAGS="$CFLAGS -W"])
+		CHECK_COMPILER_FLAG(Wall, [CFLAGS="$CFLAGS -Wall"])
+		CHECK_COMPILER_FLAG(Wextra, [CFLAGS="$CFLAGS -Wextra"])
+		CHECK_COMPILER_FLAG(Wdeclaration-after-statement, [CFLAGS="$CFLAGS -Wdeclaration-after-statement"])
+		AC_DEFINE([UNBOUND_DEBUG], [], [define this to enable debug checks.])
+		;;
+	no|*)
+		# nothing to do.
+		;;
+esac
 
 AC_C_INLINE
 
@@ -277,7 +321,7 @@ AC_CHECK_FORMAT_ATTRIBUTE
 AC_CHECK_UNUSED_ATTRIBUTE
 
 if test "$srcdir" != "."; then
-	CPPFLAGS="$CPPFLAGS -I$srcdir";
+	CPPFLAGS="$CPPFLAGS -I$srcdir"
 fi
 
 # skip these tests, we do not need them.
@@ -351,29 +395,6 @@ AC_INCLUDES_DEFAULT
 #endif
 ])
 
-# Check the type of struct msghdr msg_iovlen.
-AC_MSG_CHECKING([sign of struct msghdr.msg_iovlen])
-AC_RUN_IFELSE([
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/socket.h>
-int main()
-{
-	struct msghdr h;
-	h.msg_iovlen = -1;
-	if(10/h.msg_iovlen == 0) return 0; /* unsigned */
-	return 1; /* signed */
-}
-], [ 
-# if compiled and exit status 0
-cv_msgiovlen_type="unsigned" ], [ 
-# not compiled or bad exit status
-cv_msgiovlen_type="int" ], 
-# when cross compiling
-[ cv_msgiovlen_type="int" ])
-AC_MSG_RESULT($cv_msgiovlen_type)
-AC_DEFINE_UNQUOTED([TYPE_MSGIOVLEN], $cv_msgiovlen_type, [Define to 'int' or type of struct msghdr.msg_iovlen.])
-
 # Check for yyunput
 AC_DEFUN([CHECK_YYUNPUT],
 [AC_MSG_CHECKING(whether lex can not generate yyunput)
@@ -415,9 +436,9 @@ AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
         for dir in $withval; do
             ssldir="$dir"
             if test -f "$dir/include/openssl/ssl.h"; then
-                found_ssl="yes";
+                found_ssl="yes"
                 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.])
-                CPPFLAGS="$CPPFLAGS -I$ssldir/include";
+                CPPFLAGS="$CPPFLAGS -I$ssldir/include"
                 break;
             fi
         done
@@ -426,7 +447,7 @@ AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
         else
             AC_MSG_RESULT(found in $ssldir)
             HAVE_SSL=yes
-            LDFLAGS="$LDFLAGS -L$ssldir/lib";
+            LDFLAGS="$LDFLAGS -L$ssldir/lib"
 	    if test "x$enable_rpath" = xyes; then
 	        RUNTIME_PATH="$RUNTIME_PATH -R$ssldir/lib"
 	    fi
@@ -439,6 +460,7 @@ AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
     fi
 AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT])
 AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT])
+AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT])
 
 # check for thread library.
 AC_ARG_WITH(pthreads, AC_HELP_STRING([--with-pthreads], 
@@ -476,8 +498,12 @@ if test x_$withval != x_no; then
 	fi
 fi
 
+# check to see if libraries are needed for these functions.
+AC_SEARCH_LIBS([inet_pton], [nsl])
+AC_SEARCH_LIBS([socket], [socket])
 # check for library used by libevent after 1.3c
-AC_CHECK_LIB(rt, clock_gettime)
+AC_SEARCH_LIBS([clock_gettime], [rt])
+
 # check for libevent
 AC_ARG_WITH(libevent, AC_HELP_STRING([--with-libevent=pathname],
     [set path to libevent  (will check /usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr)]),
@@ -485,31 +511,43 @@ AC_ARG_WITH(libevent, AC_HELP_STRING([--with-libevent=pathname],
 if test x_$withval != x_no; then
         AC_MSG_CHECKING(for libevent)
         if test x_$withval = x_ -o x_$withval = x_yes; then
-            withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr";
+            withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr"
         fi
         for dir in $withval; do
             thedir="$dir"
             if test -f "$dir/include/event.h"; then
-                found_libevent="yes";
-                CPPFLAGS="$CPPFLAGS -I$thedir/include";
+                found_libevent="yes"
+                CPPFLAGS="$CPPFLAGS -I$thedir/include"
                 break;
             fi
         done
         if test x_$found_libevent != x_yes; then
-		if test -f "$dir/event.h" -a -f "$dir/.libs/libevent.a"; then
+		if test -f "$dir/event.h" -a -f "$dir/libevent.la"; then
 			# libevent source directory
             		AC_MSG_RESULT(found in $thedir)
-                	CPPFLAGS="$CPPFLAGS -I$thedir";
-            		LDFLAGS="$thedir/.libs/*.o $LDFLAGS";
+                	CPPFLAGS="$CPPFLAGS -I$thedir"
+			BAK_LDFLAGS="$LDFLAGS"
+			# remove evdns from linking
+			mkdir build >/dev/null 2>&1
+			mkdir build/libevent >/dev/null 2>&1
+			mkdir build/libevent/.libs >/dev/null 2>&1
+			ev_files_o=`ls $thedir/*.o | grep -v evdns\.o`
+			ev_files_lo=`ls $thedir/*.lo | grep -v evdns\.lo`
+			ev_files_libso=`ls $thedir/.libs/*.o | grep -v evdns\.o`
+			cp $ev_files_o build/libevent
+			cp $ev_files_lo build/libevent
+			cp $ev_files_libso build/libevent/.libs
+            		LATE_LDFLAGS="build/libevent/*.lo"
+			LDFLAGS="build/libevent/*.o $LDFLAGS"
 		else
             		AC_MSG_ERROR([Cannot find the libevent library in $withval
-You can restart configure with --with-libevent=no to use a builtin alternative.
+You can restart ./configure --with-libevent=no to use a builtin alternative.
 Please note that this alternative is not as capable as libevent when using
 many outgoing ports.  ])
 		fi
         else
             AC_MSG_RESULT(found in $thedir)
-            LDFLAGS="$LDFLAGS -L$thedir/lib";
+            LDFLAGS="$LDFLAGS -L$thedir/lib"
 	    if test "x$enable_rpath" = xyes; then
 	        RUNTIME_PATH="$RUNTIME_PATH -R$thedir/lib"
 	    fi
@@ -519,6 +557,9 @@ many outgoing ports.  ])
 	AC_CHECK_HEADERS([event.h],,, [AC_INCLUDES_DEFAULT])
 	AC_CHECK_FUNCS([event_base_free]) # only in libevent 1.2 and later
 	AC_CHECK_FUNCS([event_base_once]) # only in libevent 1.4? and later
+	if test -n "$BAK_LDFLAGS"; then
+		LDFLAGS="$BAK_LDFLAGS"
+	fi
 else
 	AC_DEFINE(USE_MINI_EVENT, 1, [Define if you want to use internal select based events])
 fi
@@ -551,10 +592,6 @@ else
 	AC_FUNC_MALLOC
 fi
 
-# check to see if libraries are needed for these functions.
-AC_CHECK_LIB(socket, socket)
-AC_CHECK_LIB(nsl, inet_pton)
-
 AC_FUNC_CHOWN
 AC_FUNC_FORK
 AC_TYPE_SIGNAL
@@ -574,6 +611,7 @@ AC_ARG_WITH(ldns,
 
 AC_CHECK_LIB(ldns, ldns_rr_new, [
 dnl ldns was found, check compat functions
+AC_CHECK_LIB(ldns, [ldns_rr_free])
 AC_REPLACE_FUNCS(inet_aton)
 AC_REPLACE_FUNCS(inet_pton)
 AC_REPLACE_FUNCS(inet_ntop)
@@ -605,7 +643,7 @@ echo "(cd $ldnsdir; ./configure)"
 (cd $ldnsdir; ./configure)
 AC_MSG_NOTICE([Finished $ldnsdir configure])
 CPPFLAGS="$CPPFLAGS -I$ldnsdir/include"
-LDFLAGS="$LDFLAGS $ldnsdir/lib/*.o"
+LDFLAGS="$LDFLAGS $ldnsdir/*.lo"
 AC_SUBST(ldnsdir)
 dnl use ldns compat functions
 AC_DEFINE(HAVE_INET_ATON)
@@ -616,10 +654,15 @@ AC_DEFINE(HAVE_STRLCPY)
 AC_DEFINE(HAVE_MEMMOVE)
 AC_DEFINE(HAVE_GETADDRINFO)
 ])
+LDFLAGS="$LATE_LDFLAGS $LDFLAGS"
 
 AC_DEFINE_UNQUOTED([MAXSYSLOGMSGLEN], [5120], [Define to the maximum message length to pass to syslog.])
 
 AH_BOTTOM([
+#ifndef UNBOUND_DEBUG
+#  define NDEBUG
+#endif
+
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
@@ -664,6 +707,10 @@ AH_BOTTOM([
 #include <openssl/err.h>
 #endif
 
+#ifdef HAVE_OPENSSL_RAND_H
+#include <openssl/rand.h>
+#endif
+
 #ifdef HAVE_ATTR_FORMAT
 #  define ATTR_FORMAT(archetype, string_index, first_to_check) \
     __attribute__ ((format (archetype, string_index, first_to_check)))

daemon/acl_list.c

@@ -0,0 +1,248 @@
+/*
+ * daemon/acl_list.h - client access control storage for the server.
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file helps the server keep out queries from outside sources, that
+ * should not be answered.
+ */
+#include "config.h"
+#include "daemon/acl_list.h"
+#include "util/regional.h"
+#include "util/log.h"
+#include "util/config_file.h"
+#include "util/net_help.h"
+
+int
+acl_list_cmp(const void* k1, const void* k2)
+{
+	struct acl_addr* n1 = (struct acl_addr*)k1;
+	struct acl_addr* n2 = (struct acl_addr*)k2;
+	int r = sockaddr_cmp_addr(&n1->addr, n1->addrlen, &n2->addr, 
+		n2->addrlen);
+	if(r != 0) return r;
+	if(n1->net < n2->net)
+		return -1;
+	if(n1->net > n2->net)
+		return 1;
+	return 0;
+}
+
+struct acl_list* 
+acl_list_create()
+{
+	struct acl_list* acl = (struct acl_list*)calloc(1,
+		sizeof(struct acl_list));
+	if(!acl)
+		return NULL;
+	acl->region = regional_create();
+	if(!acl->region) {
+		acl_list_delete(acl);
+		return NULL;
+	}
+	return acl;
+}
+
+void 
+acl_list_delete(struct acl_list* acl)
+{
+	if(!acl) 
+		return;
+	regional_destroy(acl->region);
+	free(acl->tree);
+	free(acl);
+}
+
+/** insert new address into acl_list structure */
+static int
+acl_list_insert(struct acl_list* acl, struct sockaddr_storage* addr, 
+	socklen_t addrlen, int net, enum acl_access control, 
+	int complain_duplicates)
+{
+	struct acl_addr* node = regional_alloc(acl->region,
+		sizeof(struct acl_addr));
+	if(!node)
+		return 0;
+	node->node.key = node;
+	memcpy(&node->addr, addr, addrlen);
+	node->addrlen = addrlen;
+	node->net = net;
+	node->parent = NULL;
+	node->control = control;
+	if(!rbtree_insert(acl->tree, &node->node)) {
+		if(complain_duplicates)
+			verbose(VERB_QUERY, "duplicate acl address ignored.");
+	}
+	return 1;
+}
+
+/** apply acl_list string */
+static int
+acl_list_str_cfg(struct acl_list* acl, const char* str, const char* s2,
+	int complain_duplicates)
+{
+	struct sockaddr_storage addr;
+	int net;
+	socklen_t addrlen;
+	enum acl_access control;
+	if(strcmp(s2, "allow") == 0)
+		control = acl_allow;
+	else if(strcmp(s2, "deny") == 0)
+		control = acl_deny;
+	else if(strcmp(s2, "refuse") == 0)
+		control = acl_refuse;
+	else {
+		log_err("access control type %s unknown", str);
+		return 0;
+	}
+	if(!netblockstrtoaddr(str, UNBOUND_DNS_PORT, &addr, &addrlen, &net)) {
+		log_err("cannot parse access control: %s %s", str, s2);
+		return 0;
+	}
+	if(!acl_list_insert(acl, &addr, addrlen, net, control, 
+		complain_duplicates)) {
+		log_err("out of memory");
+		return 0;
+	}
+	return 1;
+}
+
+/** read acl_list config */
+static int 
+read_acl_list(struct acl_list* acl, struct config_file* cfg)
+{
+	struct config_str2list* p;
+	for(p = cfg->acls; p; p = p->next) {
+		log_assert(p->str && p->str2);
+		if(!acl_list_str_cfg(acl, p->str, p->str2, 1))
+			return 0;
+	}
+	return 1;
+}
+
+/** initialise parent pointers in the tree */
+static void
+acl_list_init_parents(struct acl_list* acl)
+{
+	struct acl_addr* node, *prev = NULL, *p;
+	int m;
+	RBTREE_FOR(node, struct acl_addr*, acl->tree) {
+		node->parent = NULL;
+		if(!prev || prev->addrlen != node->addrlen) {
+			prev = node;
+			continue;
+		}
+		m = addr_in_common(&prev->addr, prev->net, &node->addr, 
+			node->net, node->addrlen);
+		/* sort order like: ::/0, 1::/2, 1::/4, ... 2::/2 */
+		/* find the previous, or parent-parent-parent */
+		for(p = prev; p; p = p->parent)
+			if(p->net <= m) {
+				/* ==: since prev matched m, this is closest*/
+				/* <: prev matches more, but is not a parent,
+				* this one is a (grand)parent */
+				node->parent = p;
+				break;
+			}
+		prev = node;
+	}
+}
+
+int 
+acl_list_apply_cfg(struct acl_list* acl, struct config_file* cfg)
+{
+	regional_free_all(acl->region);
+	free(acl->tree);
+	acl->tree = rbtree_create(acl_list_cmp);
+	if(!acl->tree)
+		return 0;
+	if(!read_acl_list(acl, cfg))
+		return 0;
+	/* insert defaults, with '0' to ignore them if they are duplicates */
+	if(!acl_list_str_cfg(acl, "0.0.0.0/0", "refuse", 0))
+		return 0;
+	if(!acl_list_str_cfg(acl, "::0/0", "refuse", 0))
+		return 0;
+	if(!acl_list_str_cfg(acl, "127.0.0.0/8", "allow", 0))
+		return 0;
+	if(!acl_list_str_cfg(acl, "::1", "allow", 0))
+		return 0;
+	if(!acl_list_str_cfg(acl, "::ffff:127.0.0.1", "allow", 0))
+		return 0;
+	acl_list_init_parents(acl);
+	return 1;
+}
+
+enum acl_access 
+acl_list_lookup(struct acl_list* acl, struct sockaddr_storage* addr,
+        socklen_t addrlen)
+{
+	/* lookup in the tree */
+	rbnode_t* res = NULL;
+	struct acl_addr* result;
+	struct acl_addr key;
+	key.node.key = &key;
+	memcpy(&key.addr, addr, addrlen);
+	key.addrlen = addrlen;
+	key.net = (addr_is_ip6(addr, addrlen)?128:32);
+	if(rbtree_find_less_equal(acl->tree, &key, &res)) {
+		/* exact */
+		result = (struct acl_addr*)res;
+		return result->control;
+	} else {
+		/* smaller element (or no element) */
+		int m;
+		result = (struct acl_addr*)res;
+		if(!result || result->addrlen != addrlen)
+			return acl_deny;
+		/* count number of bits matched */
+		m = addr_in_common(&result->addr, result->net, addr, 
+			key.net, addrlen);
+		while(result) { /* go up until addr is inside netblock */
+			if(result->net <= m)
+				return result->control;
+			result = result->parent;
+		}
+	}
+	return acl_deny;
+}
+
+size_t 
+acl_list_get_mem(struct acl_list* acl)
+{
+	if(!acl) return 0;
+	return sizeof(*acl) + regional_get_mem(acl->region);
+}

daemon/acl_list.h

@@ -0,0 +1,134 @@
+/*
+ * daemon/acl_list.h - client access control storage for the server.
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file keeps track of the list of clients that are allowed to 
+ * access the server.
+ */
+
+#ifndef DAEMON_ACL_LIST_H
+#define DAEMON_ACL_LIST_H
+#include "util/rbtree.h"
+struct config_file;
+struct regional;
+
+/**
+ * Enumeration of access control options for an address range.
+ * Allow or deny access.
+ */
+enum acl_access {
+	/** disallow any access whatsoever, drop it */
+	acl_deny = 0,
+	/** disallow access, send a polite 'REFUSED' reply */
+	acl_refuse,
+	/** allow full access */
+	acl_allow
+};
+
+/**
+ * Access control storage structure
+ */
+struct acl_list {
+	/** regional for allocation */
+	struct regional* region;
+	/** 
+	 * Tree of the addresses that are allowed/blocked.
+	 * contents of type acl_addr.
+	 */
+	rbtree_t* tree;
+};
+
+/**
+ *
+ * An address span with access control information
+ */
+struct acl_addr {
+	/** redblacktree node, key is this structure: addr and addrlen, net */
+	rbnode_t node;
+	/** parent node in acl tree that encompasses this entry */
+	struct acl_addr* parent;
+	/** address */
+	struct sockaddr_storage addr;
+	/** length of addr */
+	socklen_t addrlen;
+	/** netblock size */
+	int net;
+	/** access control on this netblock */
+	enum acl_access control;
+};
+
+/**
+ * Create acl structure 
+ * @return new structure or NULL on error.
+ */
+struct acl_list* acl_list_create();
+
+/**
+ * Delete acl structure.
+ * @param acl: to delete.
+ */
+void acl_list_delete(struct acl_list* acl);
+
+/**
+ * Process access control config.
+ * @param acl: where to store.
+ * @param cfg: config options.
+ * @return 0 on error.
+ */
+int acl_list_apply_cfg(struct acl_list* acl, struct config_file* cfg);
+
+/**
+ * Lookup address to see its access control status.
+ * @param acl: structure for address storage.
+ * @param addr: address to check
+ * @param addrlen: length of addr.
+ * @return: what to do with message from this address.
+ */
+enum acl_access acl_list_lookup(struct acl_list* acl, 
+	struct sockaddr_storage* addr, socklen_t addrlen);
+
+/**
+ * Get memory used by acl structure.
+ * @param acl: structure for address storage.
+ * @return bytes in use.
+ */
+size_t acl_list_get_mem(struct acl_list* acl);
+
+/** compare two acl list entries */
+int acl_list_cmp(const void* k1, const void* k2);
+
+#endif /* DAEMON_ACL_LIST_H */

daemon/daemon.c

@@ -42,6 +42,7 @@
 #include "config.h"
 #include "daemon/daemon.h"
 #include "daemon/worker.h"
+#include "daemon/acl_list.h"
 #include "util/log.h"
 #include "util/config_file.h"
 #include "util/data/msgreply.h"
@@ -49,10 +50,9 @@
 #include "services/listen_dnsport.h"
 #include "services/cache/rrset.h"
 #include "services/cache/infra.h"
+#include "services/localzone.h"
+#include "services/modstack.h"
 #include "util/module.h"
-#include "iterator/iterator.h"
-#include "validator/validator.h"
-#include "util/fptr_wlist.h"
 #include <signal.h>
 
 /** How many quit requests happened. */
@@ -127,13 +127,19 @@ daemon_init()
 	checklock_start();
 	ERR_load_crypto_strings();
 	daemon->need_to_exit = 0;
-	daemon->num_modules = 0;
+	modstack_init(&daemon->mods);
 	if(!(daemon->env = (struct module_env*)calloc(1, 
 		sizeof(*daemon->env)))) {
 		free(daemon);
 		return NULL;
 	}
 	alloc_init(&daemon->superalloc, NULL, 0);
+	daemon->acl = acl_list_create();
+	if(!daemon->acl) {
+		free(daemon->env);
+		free(daemon);
+		return NULL;
+	}
 	return daemon;	
 }
 
@@ -150,135 +156,19 @@ daemon_open_shared_ports(struct daemon* daemon)
 	return 1;
 }
 
-/** count number of modules (words) in the string */
-static int
-count_modules(const char* s)
-{
-	int num = 0;
-	if(!s)
-		return 0;
-	while(*s) {
-		/* skip whitespace */
-		while(*s && isspace((int)*s))
-			s++;
-		if(*s && !isspace((int)*s)) {
-			/* skip identifier */
-			num++;
-			while(*s && !isspace((int)*s))
-				s++;
-		}
-	}
-	return num;
-}
-
 /**
- * Get funcblock for module name
- * @param str: string with module name. Advanced to next value on success.
- * @return funcblock or NULL on error.
- */
-static struct module_func_block*
-daemon_module_factory(const char** str)
-{
-	/* these are the modules available */
-	int num = 2;
-	const char* names[] = {"iterator", "validator", NULL};
-	struct module_func_block* (*fb[])(void) = 
-		{&iter_get_funcblock, &val_get_funcblock, NULL};
-
-	int i;
-	const char* s = *str;
-	while(*s && isspace((int)*s))
-		s++;
-	for(i=0; i<num; i++) {
-		if(strncmp(names[i], s, strlen(names[i])) == 0) {
-			s += strlen(names[i]);
-			*str = s;
-			return (*fb[i])();
-		}
-	}
-	return NULL;
-}
-
-/**
- * Read config file module settings and set up the modfunc block
- * @param daemon: the daemon.
- * @return false on error
- */
-static int
-daemon_config_modules(struct daemon* daemon)
-{
-	const char* str = daemon->cfg->module_conf;
-	int i;
-	verbose(VERB_DETAIL, "module config: \"%s\"", str);
-	daemon->num_modules = count_modules(str);
-	if(daemon->num_modules == 0) {
-		log_err("error: no modules specified");
-		return 0;
-	}
-	if(daemon->num_modules > MAX_MODULE) {
-		log_err("error: too many modules (%d max %d)",
-			daemon->num_modules, MAX_MODULE);
-		return 0;
-	}
-	daemon->modfunc = (struct module_func_block**)calloc((size_t)
-		daemon->num_modules, sizeof(struct module_func_block*));
-	if(!daemon->modfunc) {
-		log_err("out of memory");
-		return 0;
-	}
-	for(i=0; i<daemon->num_modules; i++) {
-		daemon->modfunc[i] = daemon_module_factory(&str);
-		if(!daemon->modfunc[i]) {
-			log_err("Unknown value for first module in: '%s'",
-				str);
-			return 0;
-		}
-	}
-	return 1;
-}
-
-/**
- * Desetup the modules, deinit, delete.
- * @param daemon: the daemon.
- */
-static void
-daemon_desetup_modules(struct daemon* daemon)
-{
-	int i;
-	for(i=0; i<daemon->num_modules; i++) {
-		log_assert(fptr_whitelist_mod_deinit(
-			daemon->modfunc[i]->deinit));
-		(*daemon->modfunc[i]->deinit)(daemon->env, i);
-	}
-	daemon->num_modules = 0;
-	free(daemon->modfunc);
-	daemon->modfunc = 0;
-}
-
-/**
- * Setup modules. Assigns ids and calls module_init.
+ * Setup modules. setup module stack.
  * @param daemon: the daemon
  */
 static void daemon_setup_modules(struct daemon* daemon)
 {
-	int i;
-	if(daemon->num_modules != 0)
-		daemon_desetup_modules(daemon);
-	/* fixed setup of the modules */
-	if(!daemon_config_modules(daemon)) {
-		fatal_exit("failed to setup modules");
-	}
 	daemon->env->cfg = daemon->cfg;
 	daemon->env->alloc = &daemon->superalloc;
 	daemon->env->worker = NULL;
 	daemon->env->need_to_validate = 0; /* set by module init below */
-	for(i=0; i<daemon->num_modules; i++) {
-		log_info("init module %d: %s", i, daemon->modfunc[i]->name);
-		log_assert(fptr_whitelist_mod_init(daemon->modfunc[i]->init));
-		if(!(*daemon->modfunc[i]->init)(daemon->env, i)) {
-			fatal_exit("module init for module %s failed",
-				daemon->modfunc[i]->name);
-		}
+	if(!modstack_setup(&daemon->mods, daemon->cfg->module_conf, 
+		daemon->env)) {
+		fatal_exit("failed to setup modules");
 	}
 }
 
@@ -397,6 +287,12 @@ void
 daemon_fork(struct daemon* daemon)
 {
 	log_assert(daemon);
+	if(!acl_list_apply_cfg(daemon->acl, daemon->cfg))
+		fatal_exit("Could not setup access control list");
+	if(!(daemon->local_zones = local_zones_create()))
+		fatal_exit("Could not create local zones: out of memory");
+	if(!local_zones_apply_cfg(daemon->local_zones, daemon->cfg))
+		fatal_exit("Could not set up local zones");
 
 	/* setup modules */
 	daemon_setup_modules(daemon);
@@ -421,6 +317,7 @@ daemon_fork(struct daemon* daemon)
 	/* Start resolver service on main thread. */
 	log_info("start of service (%s).", PACKAGE_STRING);
 	worker_work(daemon->workers[0]);
+	log_info("service stopped (%s).", PACKAGE_STRING);
 
 	/* we exited! a signal happened! Stop other threads */
 	daemon_stop_others(daemon);
@@ -443,6 +340,8 @@ daemon_cleanup(struct daemon* daemon)
 	 * The infra cache is kept, the timing and edns info is still valid */
 	slabhash_clear(&daemon->env->rrset_cache->table);
 	slabhash_clear(daemon->env->msg_cache);
+	local_zones_delete(daemon->local_zones);
+	daemon->local_zones = NULL;
 	/* key cache is cleared by module desetup during next daemon_init() */
 	for(i=0; i<daemon->num; i++)
 		worker_delete(daemon->workers[i]);
@@ -457,7 +356,7 @@ daemon_delete(struct daemon* daemon)
 {
 	if(!daemon)
 		return;
-	daemon_desetup_modules(daemon);
+	modstack_desetup(&daemon->mods, daemon->env);
 	listening_ports_free(daemon->ports);
 	if(daemon->env) {
 		slabhash_delete(daemon->env->msg_cache);
@@ -465,6 +364,7 @@ daemon_delete(struct daemon* daemon)
 		infra_delete(daemon->env->infra_cache);
 	}
 	alloc_clear(&daemon->superalloc);
+	acl_list_delete(daemon->acl);
 	free(daemon->pidfile);
 	free(daemon->env);
 	free(daemon);
@@ -475,5 +375,6 @@ daemon_delete(struct daemon* daemon)
 	CRYPTO_cleanup_all_ex_data(); /* safe, no more threads right now */
 	ERR_remove_state(0);
 	ERR_free_strings();
+	RAND_cleanup();
 	checklock_stop();
 }

daemon/daemon.h

@@ -44,12 +44,15 @@
 
 #include "util/locks.h"
 #include "util/alloc.h"
+#include "services/modstack.h"
 struct config_file;
 struct worker;
 struct listen_port;
 struct slabhash;
 struct module_env;
 struct rrset_cache;
+struct acl_list;
+struct local_zones;
 
 /**
  * Structure holding worker list.
@@ -74,10 +77,12 @@ struct daemon {
 	struct alloc_cache superalloc;
 	/** the module environment master value, copied and changed by threads*/
 	struct module_env* env;
-	/** number of modules active, ids from 0 to num-1. */
-	int num_modules;
-	/** the module callbacks, array of num_modules length */
-	struct module_func_block** modfunc;
+	/** stack of module callbacks */
+	struct module_stack mods;
+	/** access control, which client IPs are allowed to connect */
+	struct acl_list* acl;
+	/** local authority zones */
+	struct local_zones* local_zones;
 };
 
 /**

daemon/stats.c

@@ -46,7 +46,7 @@
 
 void server_stats_init(struct server_stats* stats)
 {
-	memset(stats, 0, sizeof(stats));
+	memset(stats, 0, sizeof(*stats));
 }
 
 void server_stats_querymiss(struct server_stats* stats, struct worker* worker)
@@ -59,10 +59,12 @@ void server_stats_querymiss(struct server_stats* stats, struct worker* worker)
 
 void server_stats_log(struct server_stats* stats, int threadnum)
 {
-	log_info("server stats for thread %d: %u queries, %u from cache", 
+	log_info("server stats for thread %d: %u queries, "
+		"%u answers from cache, %u recursions", 
 		threadnum, (unsigned)stats->num_queries, 
 		(unsigned)(stats->num_queries - 
-			stats->num_queries_missed_cache));
+			stats->num_queries_missed_cache),
+		(unsigned)stats->num_queries_missed_cache);
 	log_info("server stats for thread %d: requestlist max %u avg %g "
 		"exceeded %u", threadnum, (unsigned)stats->max_query_list_size,
 		stats->num_queries_missed_cache?

daemon/unbound.c

@@ -67,7 +67,7 @@ static void usage()
 	printf("-c file	config file to read instead of %s\n", CONFIGFILE);
 	printf("	file format is described in unbound.conf(5).\n");
 	printf("-d	do not fork into the background.\n");
-	printf("-v	verbose (multiple times increase verbosity)\n");
+	printf("-v	verbose (more times to increase verbosity)\n");
 	printf("Version %s\n", PACKAGE_VERSION);
 	printf("BSD licensed, see LICENSE in source package for details.\n");
 	printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
@@ -264,8 +264,8 @@ do_chroot(struct daemon* daemon, struct config_file* cfg, int debug_mode)
 	uid_t uid;
 	gid_t gid;
 	/* initialize, but not to 0 (root) */
-	memset(&uid, -12, sizeof(uid));
-	memset(&gid, -12, sizeof(gid));
+	memset(&uid, 112, sizeof(uid));
+	memset(&gid, 112, sizeof(gid));
 	log_assert(cfg);
 
 	/* daemonize last to be able to print error to user */
@@ -274,7 +274,7 @@ do_chroot(struct daemon* daemon, struct config_file* cfg, int debug_mode)
 			fatal_exit("Could not chdir to %s: %s",
 				cfg->directory, strerror(errno));
 		}
-		verbose(VERB_DETAIL, "chdir to %s", cfg->directory);
+		verbose(VERB_QUERY, "chdir to %s", cfg->directory);
 	}
 	if(cfg->username && cfg->username[0]) {
 		struct passwd *pwd;
@@ -288,14 +288,16 @@ do_chroot(struct daemon* daemon, struct config_file* cfg, int debug_mode)
 		if(chroot(cfg->chrootdir))
 			fatal_exit("unable to chroot to %s: %s", 
 				cfg->chrootdir, strerror(errno));
-		verbose(VERB_DETAIL, "chroot to %s", cfg->chrootdir);
+		verbose(VERB_QUERY, "chroot to %s", cfg->chrootdir);
 	}
 	if(cfg->username && cfg->username[0]) {
 		if(setgid(gid) != 0)
-			fatal_exit("unable to set group id: %s", strerror(errno));
+			fatal_exit("unable to set group id of %s: %s", 
+				cfg->username, strerror(errno));
 		if(setuid(uid) != 0)
-			fatal_exit("unable to set user id: %s", strerror(errno));
-		verbose(VERB_DETAIL, "drop user privileges, run as %s", 
+			fatal_exit("unable to set user id of %s: %s", 
+				cfg->username, strerror(errno));
+		verbose(VERB_QUERY, "drop user privileges, run as %s", 
 			cfg->username);
 	}
 	/* check old pid file before forking */
@@ -337,8 +339,8 @@ run_daemon(char* cfgfile, int cmdline_verbose, int debug_mode)
 		fatal_exit("alloc failure");
 	while(!daemon->need_to_exit) {
 		if(done_chroot)
-			log_info("Restart of %s.", PACKAGE_STRING);
-		else	log_info("Start of %s.", PACKAGE_STRING);
+			verbose(VERB_OPS, "Restart of %s.", PACKAGE_STRING);
+		else	verbose(VERB_OPS, "Start of %s.", PACKAGE_STRING);
 
 		/* config stuff */
 		if(!(cfg = config_create()))

daemon/worker.c

@@ -45,6 +45,7 @@
 #include "util/random.h"
 #include "daemon/worker.h"
 #include "daemon/daemon.h"
+#include "daemon/acl_list.h"
 #include "util/netevent.h"
 #include "util/config_file.h"
 #include "util/module.h"
@@ -57,6 +58,7 @@
 #include "services/cache/infra.h"
 #include "services/cache/dns.h"
 #include "services/mesh.h"
+#include "services/localzone.h"
 #include "util/data/msgparse.h"
 #include "util/data/msgencode.h"
 #include "util/data/dname.h"
@@ -134,13 +136,13 @@ worker_mem_report(struct worker* ATTR_UNUSED(worker),
 	superac = alloc_get_mem(&worker->daemon->superalloc);
 	iter = 0;
 	val = 0;
-	for(i=0; i<worker->env.mesh->num_modules; i++) {
+	for(i=0; i<worker->env.mesh->mods.num; i++) {
 		log_assert(fptr_whitelist_mod_get_mem(worker->env.mesh->
-			modfunc[i]->get_mem));
-		if(strcmp(worker->env.mesh->modfunc[i]->name, "validator")==0)
-			val += (*worker->env.mesh->modfunc[i]->get_mem)
+			mods.mod[i]->get_mem));
+		if(strcmp(worker->env.mesh->mods.mod[i]->name, "validator")==0)
+			val += (*worker->env.mesh->mods.mod[i]->get_mem)
 				(&worker->env, i);
-		else	iter += (*worker->env.mesh->modfunc[i]->get_mem)
+		else	iter += (*worker->env.mesh->mods.mod[i]->get_mem)
 				(&worker->env, i);
 	}
 	me = sizeof(*worker) + sizeof(*worker->base) + sizeof(*worker->comsig)
@@ -161,6 +163,23 @@ worker_mem_report(struct worker* ATTR_UNUSED(worker),
 		(unsigned)infra, (unsigned)iter, (unsigned)val, (unsigned)ac, 
 		(unsigned)superac, (unsigned)me);
 	debug_total_mem(total);
+#else /* no UNBOUND_ALLOC_STATS */
+	size_t val = 0;
+	int i;
+	if(verbosity < VERB_QUERY)
+		return;
+	for(i=0; i<worker->env.mesh->mods.num; i++) {
+		log_assert(fptr_whitelist_mod_get_mem(worker->env.mesh->
+			mods.mod[i]->get_mem));
+		if(strcmp(worker->env.mesh->mods.mod[i]->name, "validator")==0)
+			val += (*worker->env.mesh->mods.mod[i]->get_mem)
+				(&worker->env, i);
+	}
+	verbose(VERB_QUERY, "cache memory msg=%u rrset=%u infra=%u val=%u",
+		(unsigned)slabhash_get_mem(worker->env.msg_cache),
+		(unsigned)slabhash_get_mem(&worker->env.rrset_cache->table),
+		(unsigned)infra_get_mem(worker->env.infra_cache),
+		(unsigned)val);
 #endif /* UNBOUND_ALLOC_STATS */
 }
 
@@ -248,40 +267,45 @@ static int
 worker_check_request(ldns_buffer* pkt, struct worker* worker)
 {
 	if(ldns_buffer_limit(pkt) < LDNS_HEADER_SIZE) {
-		verbose(VERB_DETAIL, "request too short, discarded");
+		verbose(VERB_QUERY, "request too short, discarded");
 		return -1;
 	}
 	if(ldns_buffer_limit(pkt) > NORMAL_UDP_SIZE && 
 		worker->daemon->cfg->harden_large_queries) {
-		verbose(VERB_DETAIL, "request too large, discarded");
+		verbose(VERB_QUERY, "request too large, discarded");
 		return -1;
 	}
 	if(LDNS_QR_WIRE(ldns_buffer_begin(pkt))) {
-		verbose(VERB_DETAIL, "request has QR bit on, discarded");
+		verbose(VERB_QUERY, "request has QR bit on, discarded");
 		return -1;
 	}
+	if(LDNS_TC_WIRE(ldns_buffer_begin(pkt))) {
+		LDNS_TC_CLR(ldns_buffer_begin(pkt));
+		verbose(VERB_QUERY, "request bad, has TC bit on");
+		return LDNS_RCODE_FORMERR;
+	}
 	if(LDNS_OPCODE_WIRE(ldns_buffer_begin(pkt)) != LDNS_PACKET_QUERY) {
-		verbose(VERB_DETAIL, "request unknown opcode %d", 
+		verbose(VERB_QUERY, "request unknown opcode %d", 
 			LDNS_OPCODE_WIRE(ldns_buffer_begin(pkt)));
 		return LDNS_RCODE_NOTIMPL;
 	}
 	if(LDNS_QDCOUNT(ldns_buffer_begin(pkt)) != 1) {
-		verbose(VERB_DETAIL, "request wrong nr qd=%d", 
+		verbose(VERB_QUERY, "request wrong nr qd=%d", 
 			LDNS_QDCOUNT(ldns_buffer_begin(pkt)));
 		return LDNS_RCODE_FORMERR;
 	}
 	if(LDNS_ANCOUNT(ldns_buffer_begin(pkt)) != 0) {
-		verbose(VERB_DETAIL, "request wrong nr an=%d", 
+		verbose(VERB_QUERY, "request wrong nr an=%d", 
 			LDNS_ANCOUNT(ldns_buffer_begin(pkt)));
 		return LDNS_RCODE_FORMERR;
 	}
 	if(LDNS_NSCOUNT(ldns_buffer_begin(pkt)) != 0) {
-		verbose(VERB_DETAIL, "request wrong nr ns=%d", 
+		verbose(VERB_QUERY, "request wrong nr ns=%d", 
 			LDNS_NSCOUNT(ldns_buffer_begin(pkt)));
 		return LDNS_RCODE_FORMERR;
 	}
 	if(LDNS_ARCOUNT(ldns_buffer_begin(pkt)) > 1) {
-		verbose(VERB_DETAIL, "request wrong nr ar=%d", 
+		verbose(VERB_QUERY, "request wrong nr ar=%d", 
 			LDNS_ARCOUNT(ldns_buffer_begin(pkt)));
 		return LDNS_RCODE_FORMERR;
 	}
@@ -663,12 +687,30 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 	struct lruhash_entry* e;
 	struct query_info qinfo;
 	struct edns_data edns;
+	enum acl_access acl;
 
 	if(error != NETEVENT_NOERROR) {
 		/* some bad tcp query DNS formats give these error calls */
 		verbose(VERB_ALGO, "handle request called with err=%d", error);
 		return 0;
 	}
+	acl = acl_list_lookup(worker->daemon->acl, &repinfo->addr, 
+		repinfo->addrlen);
+	if(acl == acl_deny) {
+		comm_point_drop_reply(repinfo);
+		return 0;
+	} else if(acl == acl_refuse) {
+		ldns_buffer_set_limit(c->buffer, LDNS_HEADER_SIZE);
+		ldns_buffer_write_at(c->buffer, 4, 
+			(uint8_t*)"\0\0\0\0\0\0\0\0", 8);
+		LDNS_QR_SET(ldns_buffer_begin(c->buffer));
+		LDNS_RCODE_SET(ldns_buffer_begin(c->buffer), 
+			LDNS_RCODE_REFUSED);
+		log_addr(VERB_ALGO, "refused query from",
+			&repinfo->addr, repinfo->addrlen);
+		log_buf(VERB_ALGO, "refuse", c->buffer);
+		return 1;
+	}
 	if((ret=worker_check_request(c->buffer, worker)) != 0) {
 		verbose(VERB_ALGO, "worker check request: bad query.");
 		if(ret != -1) {
@@ -716,7 +758,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 	}
 	if(edns.edns_present && edns.udp_size < NORMAL_UDP_SIZE &&
 		worker->daemon->cfg->harden_short_bufsize) {
-		verbose(VERB_DETAIL, "worker request: EDNS bufsize %d ignored",
+		verbose(VERB_QUERY, "worker request: EDNS bufsize %d ignored",
 			(int)edns.udp_size);
 		edns.udp_size = NORMAL_UDP_SIZE;
 	}
@@ -738,6 +780,10 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 		&edns, c->buffer)) {
 		return 1;
 	}
+	if(local_zones_answer(worker->daemon->local_zones, &qinfo, &edns, 
+		c->buffer, worker->scratchpad)) {
+		return (ldns_buffer_limit(c->buffer) != 0);
+	}
 	h = query_info_hash(&qinfo);
 	if((e=slabhash_lookup(worker->env.msg_cache, h, &qinfo, 0))) {
 		/* answer from cache - we have acquired a readlock on it */
@@ -789,21 +835,21 @@ worker_sighandler(int sig, void* arg)
 	struct worker* worker = (struct worker*)arg;
 	switch(sig) {
 		case SIGHUP:
-			verbose(VERB_DETAIL, "caught signal SIGHUP");
+			verbose(VERB_QUERY, "caught signal SIGHUP");
 			comm_base_exit(worker->base);
 			break;
 		case SIGINT:
-			verbose(VERB_DETAIL, "caught signal SIGINT");
+			verbose(VERB_QUERY, "caught signal SIGINT");
 			worker->need_to_exit = 1;
 			comm_base_exit(worker->base);
 			break;
 		case SIGQUIT:
-			verbose(VERB_DETAIL, "caught signal SIGQUIT");
+			verbose(VERB_QUERY, "caught signal SIGQUIT");
 			worker->need_to_exit = 1;
 			comm_base_exit(worker->base);
 			break;
 		case SIGTERM:
-			verbose(VERB_DETAIL, "caught signal SIGTERM");
+			verbose(VERB_QUERY, "caught signal SIGTERM");
 			worker->need_to_exit = 1;
 			comm_base_exit(worker->base);
 			break;
@@ -813,6 +859,30 @@ worker_sighandler(int sig, void* arg)
 	}
 }
 
+/** restart statistics timer for worker, if enabled */
+static void
+worker_restart_timer(struct worker* worker)
+{
+	if(worker->env.cfg->stat_interval > 0) {
+		struct timeval tv;
+		tv.tv_sec = worker->env.cfg->stat_interval;
+		tv.tv_usec = 0;
+		comm_timer_set(worker->stat_timer, &tv);
+	}
+}
+
+void worker_stat_timer_cb(void* arg)
+{
+	struct worker* worker = (struct worker*)arg;
+	server_stats_log(&worker->stats, worker->thread_num);
+	mesh_stats(worker->env.mesh, "mesh has");
+	worker_mem_report(worker, NULL);
+	server_stats_init(&worker->stats);
+	mesh_stats_clear(worker->env.mesh);
+	/* start next timer */
+	worker_restart_timer(worker);
+}
+
 struct worker* 
 worker_create(struct daemon* daemon, int id)
 {
@@ -877,17 +947,10 @@ worker_init(struct worker* worker, struct config_file *cfg,
 	} else { /* !do_sigs */
 		worker->comsig = 0;
 	}
-	/* init random(), large table size. */
-	if(!(worker->rndstate = (struct ub_randstate*)calloc(1,
-		sizeof(struct ub_randstate)))) {
-		log_err("malloc rndtable failed.");
-		worker_delete(worker);
-		return 0;
-	}
 	seed = (unsigned int)time(NULL) ^ (unsigned int)getpid() ^
 		(((unsigned int)worker->thread_num)<<17);
 		/* shift thread_num so it does not match out pid bits */
-	if(!ub_initstate(seed, worker->rndstate, RND_STATE_SIZE)) {
+	if(!(worker->rndstate = ub_initstate(seed, NULL))) {
 		seed = 0;
 		log_err("could not init random numbers.");
 		worker_delete(worker);
@@ -924,6 +987,12 @@ worker_init(struct worker* worker, struct config_file *cfg,
 			return 0;
 		}
 	}
+	worker->stat_timer = comm_timer_create(worker->base, 
+		worker_stat_timer_cb, worker);
+	if(!worker->stat_timer) {
+		log_err("could not create statistics timer");
+	}
+
 	/* we use the msg_buffer_size as a good estimate for what the 
 	 * user wants for memory usage sizes */
 	worker->scratchpad = regional_create_custom(cfg->msg_buffer_size);
@@ -945,8 +1014,7 @@ worker_init(struct worker* worker, struct config_file *cfg,
 	worker->env.alloc = &worker->alloc;
 	worker->env.rnd = worker->rndstate;
 	worker->env.scratch = worker->scratchpad;
-	worker->env.mesh = mesh_create(worker->daemon->num_modules,
-		worker->daemon->modfunc, &worker->env);
+	worker->env.mesh = mesh_create(&worker->daemon->mods, &worker->env);
 	worker->env.detach_subs = &mesh_detach_subs;
 	worker->env.attach_sub = &mesh_attach_sub;
 	worker->env.kill_sub = &mesh_state_delete;
@@ -957,6 +1025,12 @@ worker_init(struct worker* worker, struct config_file *cfg,
 		return 0;
 	}
 	worker_mem_report(worker, NULL);
+	/* if statistics enabled start timer */
+	if(worker->env.cfg->stat_interval > 0) {
+		verbose(VERB_ALGO, "set statistics interval %d secs", 
+			worker->env.cfg->stat_interval);
+		worker_restart_timer(worker);
+	}
 	return 1;
 }
 
@@ -971,19 +1045,20 @@ worker_delete(struct worker* worker)
 {
 	if(!worker) 
 		return;
-	if(worker->env.mesh)
+	if(worker->env.mesh && verbosity >= VERB_OPS) {
+		server_stats_log(&worker->stats, worker->thread_num);
 		mesh_stats(worker->env.mesh, "mesh has");
-	server_stats_log(&worker->stats, worker->thread_num);
-	worker_mem_report(worker, NULL);
+		worker_mem_report(worker, NULL);
+	}
 	mesh_delete(worker->env.mesh);
 	ldns_buffer_free(worker->env.scratch_buffer);
 	listen_delete(worker->front);
 	outside_network_delete(worker->back);
 	comm_signal_delete(worker->comsig);
 	comm_point_delete(worker->cmd_com);
+	comm_timer_delete(worker->stat_timer);
 	comm_base_delete(worker->base);
 	ub_randfree(worker->rndstate);
-	free(worker->rndstate);
 	/* close fds after deleting commpoints, to be sure.
 	   Also epoll does not like closing fd before event_del */
 	if(worker->cmd_send_fd != -1)
@@ -1052,3 +1127,45 @@ worker_alloc_cleanup(void* arg)
 	slabhash_clear(&worker->env.rrset_cache->table);
 	slabhash_clear(worker->env.msg_cache);
 }
+
+/* --- fake callbacks for fptr_wlist to work --- */
+int libworker_send_packet(ldns_buffer* ATTR_UNUSED(pkt), 
+	struct sockaddr_storage* ATTR_UNUSED(addr), 
+	socklen_t ATTR_UNUSED(addrlen), int ATTR_UNUSED(timeout), 
+	struct module_qstate* ATTR_UNUSED(q), int ATTR_UNUSED(use_tcp))
+{
+	log_assert(0);
+	return 0;
+}
+
+struct outbound_entry* libworker_send_query(uint8_t* ATTR_UNUSED(qname), 
+	size_t ATTR_UNUSED(qnamelen), uint16_t ATTR_UNUSED(qtype), 
+	uint16_t ATTR_UNUSED(qclass), uint16_t ATTR_UNUSED(flags), 
+	int ATTR_UNUSED(dnssec), struct sockaddr_storage* ATTR_UNUSED(addr), 
+	socklen_t ATTR_UNUSED(addrlen), struct module_qstate* ATTR_UNUSED(q))
+{
+	log_assert(0);
+	return 0;
+}
+
+int libworker_handle_reply(struct comm_point* ATTR_UNUSED(c), 
+	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
+        struct comm_reply* ATTR_UNUSED(reply_info))
+{
+	log_assert(0);
+	return 0;
+}
+
+int libworker_handle_service_reply(struct comm_point* ATTR_UNUSED(c), 
+	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
+        struct comm_reply* ATTR_UNUSED(reply_info))
+{
+	log_assert(0);
+	return 0;
+}
+
+int context_query_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
+{
+	log_assert(0);
+	return 0;
+}

daemon/worker.h

@@ -59,9 +59,6 @@ struct listen_port;
 struct ub_randstate;
 struct regional;
 
-/** size of table used for random numbers. large to be more secure. */
-#define RND_STATE_SIZE 256
-
 /** worker commands */
 enum worker_commands {
 	/** make the worker quit */
@@ -93,6 +90,8 @@ struct worker {
 	struct comm_signal* comsig;
 	/** commpoint to listen to commands. */
 	struct comm_point* cmd_com;
+	/** timer for statistics */
+	struct comm_timer* stat_timer;
 
 	/** number of requests that can be handled by this worker */
 	size_t request_size;
@@ -217,4 +216,7 @@ int worker_handle_service_reply(struct comm_point* c, void* arg, int error,
 /** cleanup the cache to remove all rrset IDs from it, arg is worker */
 void worker_alloc_cleanup(void* arg);
 
+/** statistics timer callback handler */
+void worker_stat_timer_cb(void* arg);
+
 #endif /* DAEMON_WORKER_H */

doc/CREDITS

@@ -5,3 +5,8 @@ from the University of California and from Verisign. The Java prototype
 was made in further cooperation with Geoff Sisson and Roy Arends from Nominet.
 
 At NLnet Labs, Jelte Jansen and Mark Santcroos reviewed the unbound C sources.
+
+Jakob Schlyter - for advice on secure settings, random numbers and blacklists.
+
+Ondřej Surý - running coverity analysis tool on 0.9 dev version.
+Alexander Gall - multihomed, anycast testing of unbound resolver server.

doc/Changelog

@@ -1,7 +1,331 @@
+11 February 2008: Wouter
+	- nicer statistic output (from trunk).
+	- ub_val to ub_ for library API (from trunk).
+	- (from trunk) set_option, set_debugout, etc/hosts handling.
+
+8 February 2008: Wouter
+	- test program for multiple queries over a TCP channel.
+	- tpkg test for stream tcp queries.
+	- unbound replies to multiple TCP queries on a TCP channel.
+	- fixup misclassification of root referral with NS in answer
+	  when validating a nonrec query.
+	- tag 0.9
+
+7 February 2008: Wouter
+	- moved up all current level 2 to be level 3. And 3 to 4.
+	  to make room for new debug level 2 for detailed information 
+	  for operators.
+	- verbosity level 2. Describes recursion and validation.
+	- cleaner configure script and fixes for libevent solaris.
+	- signedness for log output memory sizes in high verbosity.
+
+6 February 2008: Wouter
+	- clearer explanation of threading configure options.
+	- fixup asynclook test for nothreading (it creates only one process
+	  to do the extended test).
+	- changed name of ub_val_result_free to ub_val_resolve_free.
+	- removes warning message during library linking, renamed
+	  libunbound/unbound.c -> libunbound.c and worker to libworker.
+	- fallback without EDNS if result is NOTIMPL as well as on FORMERR.
+
+5 February 2008: Wouter
+	- statistics-interval: seconds option added.
+	- test for statistics option
+	- ignore errors making directories, these can occur in parallel builds
+	- fixup Makefile strip command and libunbound docs typo.
+
+31 January 2008: Wouter
+	- bg thread/process reads and writes the pipe nonblocking all the time
+	  so that even if the pipe is buffered or so, the bg thread does not
+	  block, and services both pipes and queries.
+
+30 January 2008: Wouter
+	- check trailing / on chrootdir in checkconf.
+	- check if root hints and anchor files are in chrootdir.
+	- no route to host tcp error is verbosity level 2. 
+	- removed unused send_reply_iov. and its configure check.
+	- added prints of 'remote address is 1.2.3.4 port 53' to errors
+	  from netevent; the basic socket errors.
+
+28 January 2008: Wouter
+	- fixup uninit use of buffer by libunbound (query id, flags) for
+	  local_zone answers.
+	- fixup uninit warning from random.c; also seems to fix sporadic
+	  sigFPE coming out of openssl.
+	- made openssl entropy warning more silent for library use. Needs
+	  verbosity 1 now.
+	- fixup forgotten locks for rbtree_searches on ctx->query tree.
+	- random generator cleanup - RND_STATE_SIZE removed, and instead
+	  a super-rnd can be passed at init to chain init random states.
+	- test also does lock checks if available.
+	- protect config access in libworker_setup().
+	- libevent doesn't like comm_base_exit outside of runloop.
+	- close fds after removing commpoints only (for epoll, kqueue).
+
+25 January 2008: Wouter
+	- added tpkg for asynclook and library use. 
+	- allows localhost to be queried when as a library.
+	- fixup race condition between cancel and answer (in case of
+	  really fast answers that beat the cancel).
+	- please doxygen, put doxygen comment in one place.
+	- asynclook -b blocking mode and test.
+	- refactor asynclook, nicer code.
+	- fixup race problems from opensll in rand init from library, with
+	  a mutex around the rand init.
+	- fix pass async_id=NULL to _async resolve().
+	- rewrote _wait() routine, so that it is threadsafe.
+	- cancelation is threadsafe.
+	- asynclook extended test in tpkg.
+	- fixed two races where forked bg process waits for (somehow shared?)
+	  locks, so does not service the query pipe on the bg side.
+	  Now those locks are only held for fg_threads and for bg_as_a_thread.
+
+24 January 2008: Wouter
+	- tested the cancel() function.
+	- asynclook -c (cancel) feature.
+	- fix fail to allocate context actions.
+	- make pipe nonblocking at start.
+	- update plane for retry mode with caution to limit bandwidth.
+	- fix Makefile for concurrent make of unbound-host.
+	- renamed ub_val_ctx_wait/poll/process/fd to ub_val*.
+	- new calls to set forwarding added to header and docs.
+
+23 January 2008: Wouter
+	- removed debug prints from if-auto, verb-algo enables some.
+	- libunbound QUIT setup, remove memory leaks, when using threads
+	  will share memory for passing results instead of writing it over
+	  the pipe, only writes ID number over the pipe (towards the handler
+	  thread that does process() ).
+
+22 January 2008: Wouter
+	- library code for async in libunbound/unbound.c.
+	- fix link testbound.
+	- fixup exit bug in mini_event.
+	- background worker query enter and result functions.
+	- bg query test application asynclook, it looks up multiple
+	  hostaddresses (A records) at the same time.
+
+21 January 2008: Wouter
+	- libworker work, netevent raw commpoints, write_msg, serialize.
+
+18 January 2008: Wouter
+	- touch up of manpage for libunbound.
+	- support for IP_RECVDSTADDR (for *BSD ip4).
+	- fix for BSD, do not use ip4to6 mapping, make two sockets, once
+	  ip6 and once ip4, uses socket options.
+	- goodbye ip4to6 mapping.
+	- update ldns-testpkts with latest version from ldns-trunk.
+	- updated makedist for relative ldns pathnames.
+	- library API with more information inside the result structure.
+	- work on background resolves.
+
+17 January 2008: Wouter
+	- fixup configure in case -lldns is installed.
+	- fixup a couple of doxygen warnings, about enum variables.
+	- interface-automatic now copies the interface address from the
+	  PKT_INFO structure as well.
+	- manual page with library API, all on one page 'man libunbound'.
+	- rewrite of PKTINFO structure, it also captures IP4 PKTINFO.
+
+16 January 2008: Wouter
+	- incoming queries to the server with TC bit on are replied FORMERR.
+	- interface-automatic replied the wrong source address on localhost
+	  queries. Seems to be due to ifnum=0 in recvmsg PKTINFO. Trying
+	  to use ifnum=-1 to mean 'no interface, use kernel route'.
+
+15 January 2008: Wouter
+	- interface-automatic feature. experimental. Nice for anycast.
+	- tpkg test for ip6 ancillary data.
+	- removed debug prints.
+	- porting experience, define for Solaris, test refined for BSD
+	  compatibility. The feature probably will not work on OpenBSD.
+	- makedist fixup for ldns-src in build-dir.
+
+14 January 2008: Wouter
+	- in no debug sets NDEBUG to remove asserts.
+	- configure --enable-debug is needed for dependency generation
+	  for assertions and for compiler warnings.
+	- ldns.tgz updated with ldns-trunk (where buffer.h is updated).
+	- fix lint, unit test in optimize mode.
+	- default access control allows ::ffff:127.0.0.1 v6mapped localhost.
+	
+11 January 2008: Wouter
+	- man page, warning removed.
+	- added text describing the use of stub zones for private zones.
+	- checkconf tests for bad hostnames (IP address), and for doubled
+	  interface lines.
+	- memory sizes can be given with 'k', 'Kb', or M or G appended.
+
+10 January 2008: Wouter
+	- typo in example.conf.
+	- made using ldns-src that is included the package more portable
+	  by linking with .lo instead of .o files in the ldns package.
+	- nicer do-ip6: yes/no documentation.
+	- nicer linking of libevent .o files.
+	- man pages render correctly on solaris.
+
+9 January 2008: Wouter
+	- fixup openssl RAND problem, when the system is not configured to
+	  give entropy, and the rng needs to be seeded.
+
+8 January 2008: Wouter
+	- print median and quartiles with extensive logging.
+
+4 January 2008: Wouter
+	- document misconfiguration in private network.
+
+2 January 2008: Wouter
+	- fixup typo in requirements.
+	- document that 'refused' is a better choice than 'drop' for 
+	  the access control list, as refused will stop retries.
+
+7 December 2007: Wouter
+	- unbound-host has a -d option to show what happens. This can help
+	  with debugging (why do I get this answer).
+	- fixup CNAME handling, on nodata, sets and display canonname.
+	- dot removed from CNAME display.
+	- respect -v for NXDOMAINs.
+	- updated ldns-src.tar.gz with ldns-trunk today (1.2.2 fixes).
+	- size_t to int for portability of the header file.
+	- fixup bogus handling.
+	- dependencies and lint for unbound-host.
+
+6 December 2007: Wouter
+	- library resolution works in foreground mode, unbound-host app
+	  receives data.
+	- unbound-host prints rdata using ldns.
+	- unbound-host accepts trust anchors, and prints validation
+	  information when you give -v.
+
+5 December 2007: Wouter
+	- locking in context_new() inside the function.
+	- setup of libworker.
+
+4 December 2007: Wouter
+	- minor Makefile fixup.
+	- moved module-stack code out of daemon/daemon into services/modstack,
+	  preparing for code-reuse.
+	- move context into own header file.
+	- context query structure.
+	- removed unused variable pwd from checkconf.
+	- removed unused assignment from outside netw.
+	- check timeval length of string.
+	- fixup error in val_utils getsigner.
+	- fixup same (*var) error in netblocktostr.
+	- fixup memleak on parse error in localzone.
+	- fixup memleak on packet parse error.
+	- put ; after union in parser.y.
+	- small hardening in iter_operate against iq==NULL.
+	- hardening, if error reply with rcode=0 (noerror) send servfail.
+	- fixup same (*var) error in find_rrset in msgparse, was harmless.
+	- check return value of evtimer_add().
+	- fixup lockorder in lruhash_reclaim(), building up a list of locked
+	  entries one at a time. Instead they are removed and unlocked.
+	- fptr_wlist for markdelfunc.
+	- removed is_locked param from lruhash delkeyfunc.
+	- moved bin_unlock during bin_split purely to please.
+
+3 December 2007: Wouter
+	- changed checkconf/ to smallapp/ to make room for more support tools.
+	  (such as unbound-host).
+	- install dirs created with -m 755 because they need to be accessible.
+	- library extensive featurelist added to TODO.
+	- please doxygen, lint.
+	- library test application, with basic functionality.
+	- fix for building in a subdirectory. 
+	- link lib fix for Leopard.
+
+30 November 2007: Wouter
+	- makefile that creates libunbound.la, basic file or libunbound.a
+	  when creating static executables (no libtool).
+	- more API setup.
+
+29 November 2007: Wouter
+	- 0.9 public API start.
+
+28 November 2007: Wouter
+	- Changeup plan for 0.8 - no complication needed, a simple solution
+	  has been chosen for authoritative features.
+	- you can use single quotes in the config file, so it is possible
+	  to specify TXT records in local data.
+	- fixup small memory problem in implicit transparent zone creation.
+	- test for implicit zone creation and multiple RR RRsets local data.
+	- local-zone nodefault test.
+	- show testbound testlist on commit.
+	- iterator normalizer changes CNAME chains ending in NXDOMAIN where
+	  the packet got rcode NXDOMAIN into rcode NOERROR. (since the initial
+	  domain exists).
+	- nicer verbosity: 0 and 1 levels.
+	- lower nonRDquery chance of eliciting wrongly typed validation
+	  requiring message from the cache.
+	- fix for nonRDquery validation typing; nodata is detected when
+	  SOA record in auth section (all validation-requiring nodata messages
+	  have a SOA record in authority, so this is OK for the validator),
+	  and NS record is needed to be a referral.
+	- duplicate checking when adding NSECs for a CNAME, and test.
+	- created svn tag 0.8, after completing testbed tests.
+
+27 November 2007: Wouter
+	- per suggestion in rfc2308, replaced default max-ttl value with 1 day.
+	- set size of msgparse lookup table to 32, from 1024, so that its size
+	  is below the 2048 regional large size threshold, and does not cause
+	  a call to malloc when a message is parsed.
+	- update of memstats tool to print number of allocation calls.
+	  This is what is taking time (not space) and indicates the avg size
+	  of the allocations as well. region_alloc stat is removed.
+
+22 November 2007: Wouter
+	- noted EDNS in-the-middle dropping trouble as a TODO.
+	  At this point theoretical, no user trouble has been reported.
+	- added all default AS112 zones.
+	- answers from local zone content.
+		* positive answer, the rrset in question
+		* nodata answer (exist, but not that type).
+		* nxdomain answer (domain does not exist).
+		* empty-nonterminal answer.
+		* But not: wildcard, nsec, referral, rrsig, cname/dname,
+			or additional section processing, NS put in auth.
+	- test for correct working of static and transparent and couple
+	  of important defaults (localhost, as112, reverses). 
+	  Also checks deny and refuse settings.
+	- fixup implicit zone generation and AA bit for NXDOMAIN on localdata.
+
+21 November 2007: Wouter
+	- local zone internal data setup.
+
+20 November 2007: Wouter
+	- 0.8 - str2list config support for double string config options.
+	- local-zone and local-data options, config storage and documentation.
+
+19 November 2007: Wouter
+	- do not downcase NSEC and RRSIG for verification. Follows 
+	  draft-ietf-dnsext-dnssec-bis-updates-06.txt.
+	- fixup leaking unbound daemons at end of tests.
+	- README file updated.
+	- nice libevent not found error.
+	- README talks about gnu make.
+	- 0.8: unit test for addr_mask and fixups for it.
+	  and unit test for addr_in_common().
+	- 0.8: access-control config file element.
+	  and unit test rpl replay file.
+	- 0.8: fixup address reporting from netevent.
+
+16 November 2007: Wouter
+	- privilege separation is not needed in unbound at this time.
+	  TODO item marked as such.
+	- created beta-0.7 branch for support.
+	- tagged 0.7 for beta release.
+	- moved trunk to 0.8 for 0.8(auth features) development.
+	- 0.8: access control list setup.
+
+15 November 2007: Wouter
+	- review fixups from Jelte.
+
 14 November 2007: Wouter
 	- testbed script does not recreate configure, since its in svn now.
 	- fixup checkconf test so that it does not test 
 	  /etc/unbound/unbound.conf.
+	- tag 0.6.
 
 13 November 2007: Wouter
 	- remove debug print.

doc/README

@@ -18,16 +18,21 @@ This software is under BSD license, see LICENSE for details.
   * autoreconf (autoheader && autoconf), if ./configure is missing.
 
 * Make and install: ./configure; make; make install
+  * Use GNU make; default on linux, often called 'gmake' on BSD and Solaris.
   * --with-ldns=/path/to/ldns
-  	If ldns is not detected on the system, a prepackaged incuded tarball
+  	If ldns is not detected on the system, a prepackaged tarball
 	of the ldns library is used to compile and statically link against.
 	If detected on the system, it will dynamically link against it.
   * --with-libevent=/path/to/libevent
   	Can be set to either the system install or the build directory.
 	--with-libevent=no gives a builtin alternative implementation.
+	libevent is useful when having many (thousands) of outgoing ports.
+	This improves randomization and spoof resistance. For the default 
+	of 16 ports the builtin alternative works well.
   * --without-pthreads 
-	This disables pthreads, and uses Solaris thr library or no threading. 
-	Without this option the pthreads library is detected automatically.
+	This disables pthreads. Without this option the pthreads library 
+	is detected automatically. Use this option to disable threading
+	altogether, or, on Solaris, also use --with(out)-solaris-threads.
   * --enable-static-exe
 	This enables a debug option to statically link, against ldns and 
 	libevent libraries.
@@ -49,6 +54,20 @@ o If libevent is older (before 1.3c), unbound will exit instead of reload
   on sighup. On a restart 'did not exit gracefully last time' warning is 
   printed. Perform ./configure --with-libevent=no or update libevent, rerun 
   configure and recompile unbound to make sighup work correctly.
+  It is strongly suggested to use the latest version of libevent (1.4 or more)
+  on Solaris, because of fixes in the solaris event port code in libevent.
+o If you receive no answers deploying unbound on a private network.
+  Check that the zone you configure as a stub zone is correct, listing working 
+  ip-addresses. Check that the NS data in the zone, those hostnames, are
+  in fact those same, working, ip-addresses. Unbound will fetch the NS data
+  from the zone and use that information in preference to the config 
+  information. 
+o If you are not receiving the correct source IP address on replies (e.g.
+  you are running a multihomed, anycast server), the interface-automatic
+  option can be enabled to set socket options to achieve the correct
+  source IP address on UDP replies. Listing all IP addresses explicitly in
+  the config file is an alternative. The interface-automatic option uses
+  non portable socket options, Linux and FreeBSD should work fine.
 
 Acknowledgements
 ----------------

doc/TODO

@@ -1,8 +1,4 @@
 TODO items.
-o use real entropy to make random (ID, port) numbers more random.
-o in production mode, do not free memory on exit. In debug mode, test leaks.
-o profile memory allocation, and if performance issues, use special memory
-  allocator. For example, with caches per thread.
 o #define BIT_... different on bigendian and smallendian systems so that
   the htons on flags is not needed to send a message from the cache.
 o speed up pkt domain name decompression loop detection using counter perhaps.
@@ -11,16 +7,10 @@ o detect OS/400 pthreads implementation that allows upgrading to writelock
 o understand synthesized DNAMEs, so those TTL=0 packets are cached properly.
 o understand NSEC/NSEC3, aggressive negative caching, so that updates to
   NSEC/NSEC3 will result in proper negative responses.
-o fallback without EDNS if result is NOTIMPL, now only on FORMERR like in java.
 o scrubber has slow pkt_subdomain and pkt_strict_subdomain functions.
 o get serverselection algorithm out of local optimum.
   make subtargets to get rtt info for a couple of targets, like fetch-policy.
   or send out multiple queries to multiple servers.
-o donotqueryaddresses allow specification of subnets, use trie to store.
-  extend default list to contain illegal ip4 and ip6 addresses.
-o memory profile; and if needed put serviced queries under qstate->region
-  and special purpose region code, reuse blocks, shrink if too big.
-o check query, option to enforce presence of qdsection in noerror answers.
 o configuration option where port 53 is used for send and receive, no other
   ports are used.
 o (option) to not send replies to clients after a timeout of (say 5 secs) has
@@ -28,21 +18,17 @@ o (option) to not send replies to clients after a timeout of (say 5 secs) has
 o private TTL feature
 o pretend-dnssec-unaware, and pretend-edns-unaware modes for debug/workshops.
 o delegpt use rbtree for ns-list, to avoid slowdown for very large NS sets.
-o be able to have different listen and query-to addresses to bind to,
-  so you can listen to localhost and query-to to the internet.
 o reprime and refresh oft used data before timeout.
 o retain prime results in a overlaid roothints file.
 o store primed key data in a overlaid keyhints file (sort of like drafttimers).
 o windows version, auto update feature, a query to check for the version.
 o autoreport of problems
-o logrotation, syslog
 o command the server with TSIG inband. get-config, clearcache, 
 	get stats, get memstats, get ..., reload, clear one zone from cache
-o watch for spoof nearmisses.
+o watch for spoof nearmisses. Keep counter of nearmisses and print that
+  in the stats lines, operator can determine what level is a redalert.
 o improve compression of DNS packets by first puttig uncompressible rrs, then
   compress to their rdata.
-o if one server is not responsive do not spend 75 secs on that server, but
-  try other servers with lower rtt.
 o NSID rfc 5001 support.
 o timers rfc 5011 support.
 o Treat YXDOMAIN from a DNAME properly, in iterator (not throwaway), validator.
@@ -53,3 +39,19 @@ o inspect date on executable, then warn user in log if its more than 1 year.
 o proactively prime root, stubs and trust anchors, feature.
   early failure, faster on first query, but more traffic.
 o use privilege separation, to change privilege options during reload securely
+  not needed.
+o On Windows use CryptGenRandom() to get random seed for arc4random.
+o Think about intermediate firewalls dropping EDNS UDP & handling that.
+  detect nonEDNS middlebox by timeout on edns queries, and fallback to
+  nonEDNS when appropriate.
+o library add convenience functions for A, AAAA, PTR, getaddrinfo, libresolve.
+o library add function to get signature data (or whole reply message).
+o library add function to validate input from app that is signed.
+o add dynamic-update requests (making a dynupd request) to libunbound api.
+o in an ipv6 connected only environment unbound cannot use outgoing IP6 
+  to send to ip4to6 mapped hosts, need ip4to6map of NS and disable 
+  V6ONLY socket option.
+o support multiple dns messages in a TCP query stream for the unbound server.
+o SIG(0) and TSIG.
+o support OPT record placement on recv anywhere in the additional section. 
+o add local-file: config with authority features.

doc/example.conf

@@ -15,6 +15,10 @@ server:
 	# verbosity number, 0 is least verbose. 1 is default.
 	verbosity: 1
 
+	# print statistics to the log (for every thread) every N seconds.
+	# Set to "" or 0 to disable. Default is disabled.
+	# statistics-interval: 0
+
 	# number of threads to create. 1 disables threading.
 	# num-threads: 1
 
@@ -26,6 +30,10 @@ server:
 	# interface: 192.0.2.153
 	# interface: 192.0.2.154
 	# interface: 2001:DB8::5
+	
+	# enable this feature to copy the source address of queries to reply.
+	# Socket options not be supported on all platforms. experimental. 
+	# interface-automatic: no
 
 	# port to answer queries from
 	# port: 53
@@ -59,8 +67,8 @@ server:
 	# msg-buffer-size: 65552
 
 	# the amount of memory to use for the message cache.
-	# in bytes. default is 4 Mb
-	# msg-cache-size: 4194304
+	# plain value in bytes or you can append k, m or G. default is "4Mb". 
+	# msg-cache-size: 4m
 
 	# the number of slabs to use for the message cache.
 	# the number of slabs must be a power of 2.
@@ -71,8 +79,8 @@ server:
 	# num-queries-per-thread: 1024
 
 	# the amount of memory to use for the RRset cache.
-	# in bytes. default is 4 Mb
-	# rrset-cache-size: 4194304
+	# plain value in bytes or you can append k, m or G. default is "4Mb". 
+	# rrset-cache-size: 4m
 
 	# the number of slabs to use for the RRset cache.
 	# the number of slabs must be a power of 2.
@@ -81,7 +89,7 @@ server:
 	
 	# the time to live (TTL) value cap for RRsets and messages in the
 	# cache. Items are not cached for longer. In seconds.
-	# cache-max-ttl: 864000
+	# cache-max-ttl: 86400
 
 	# the time to live (TTL) value for cached roundtrip times and
 	# EDNS version information for hosts. In seconds.
@@ -99,7 +107,7 @@ server:
 	# infra-cache-numhosts: 10000
 
 	# the maximum size of the lame zones cached per host. in bytes.
-	# infra-cache-lame-size: 10240
+	# infra-cache-lame-size: 10k
 
 	# Enable IPv4, "yes" or "no".
 	# do-ip4: yes
@@ -113,6 +121,16 @@ server:
 	# Enable TCP, "yes" or "no".
 	# do-tcp: yes
 
+	# control which clients are allowed to make (recursive) queries
+	# to this server. Specify classless netblocks with /size and action.
+	# By default everything is refused, except for localhost.
+	# Choose deny (drop message), refuse (polite error reply), allow.
+	# access-control: 0.0.0.0/0 refuse
+	# access-control: 127.0.0.0/8 allow
+	# access-control: ::0/0 refuse
+	# access-control: ::1 allow
+	# access-control: ::ffff:127.0.0.1 allow
+	
 	# if given, a chroot(2) is done to the given directory.
 	# i.e. you can chroot to the working directory, for example,
 	# for extra security, but make sure all files are in that directory.
@@ -121,7 +139,7 @@ server:
 
 	# if given, user privileges are dropped (after binding port),
 	# and the given username is assumed. Default is user "unbound".
-	# If you give "" no priviliges are dropped.
+	# If you give "" no privileges are dropped.
 	# username: "unbound"
 
 	# the working directory.
@@ -238,14 +256,44 @@ server:
 	# val-nsec3-keysize-iterations: "1024 150 2048 500 4096 2500"
 
 	# the amount of memory to use for the key cache.
-	# in bytes. default is 4 Mb
-	# key-cache-size: 4194304
+	# plain value in bytes or you can append k, m or G. default is "4Mb". 
+	# key-cache-size: 4m
 
 	# the number of slabs to use for the key cache.
 	# the number of slabs must be a power of 2.
 	# more slabs reduce lock contention, but fragment memory usage.
 	# key-cache-slabs: 4
 
+	# a number of locally served zones can be configured.
+	# 	local-zone: <zone> <type>
+	# 	local-data: "<resource record string>"
+	# o deny serves local data (if any), else, drops queries. 
+	# o refuse serves local data (if any), else, replies with error.
+	# o static serves local data, else, nxdomain or nodata answer.
+	# o transparent serves local data, else, resolves normally .
+	# o redirect serves the zone data for any subdomain in the zone.
+	# o nodefault can be used to normally resolve AS112 zones.
+	#
+	# defaults are localhost address, reverse for 127.0.0.1 and ::1
+	# and nxdomain for AS112 zones. If you configure one of these zones
+	# the default content is omitted, or you can omit it with 'nodefault'.
+	# 
+	# If you configure local-data without specifying local-zone, by
+	# default a transparent local-zone is created for the data.
+	#
+	# You can add locally served data with
+	# local-zone: "local." static
+	# local-data: "mycomputer.local. IN A 192.0.2.51"
+	# local-data: 'mytext.local TXT "content of text record"'
+	#
+	# You can override certain queries with
+	# local-data: "adserver.example.com A 127.0.0.1"
+	#
+	# You can redirect a domain to a fixed address with
+	# (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
+	# local-zone: "example.com" redirect
+	# local-data: "example.com A 192.0.2.3"
+
 
 # Stub zones.
 # Create entries like below, to make all queries for 'example.com' and 

doc/libunbound.3

@@ -0,0 +1,333 @@
+.TH "libunbound" "3" "@date@" "NLnet Labs" "unbound @version@"
+.\"
+.\" libunbound.3 -- unbound library functions manual
+.\"
+.\" Copyright (c) 2007, NLnet Labs. All rights reserved.
+.\"
+.\" See LICENSE for the license.
+.\"
+.\"
+.SH "NAME"
+.LP
+.B libunbound,
+.B unbound.h,
+.B ub_ctx,
+.B ub_result,
+.B ub_callback_t,
+.B ub_ctx_create,
+.B ub_ctx_delete,
+.B ub_ctx_set_option,
+.B ub_ctx_config,
+.B ub_ctx_set_fwd,
+.B ub_ctx_resolvconf,
+.B ub_ctx_hosts,
+.B ub_ctx_add_ta,
+.B ub_ctx_add_ta_file,
+.B ub_ctx_trustedkeys,
+.B ub_ctx_debugout,
+.B ub_ctx_debuglevel,
+.B ub_ctx_async,
+.B ub_poll,
+.B ub_wait,
+.B ub_fd,
+.B ub_process,
+.B ub_resolve,
+.B ub_resolve_async,
+.B ub_cancel,
+.B ub_resolve_free,
+.B ub_strerror
+\- Unbound DNS validating resolver @version@ functions.
+.SH "SYNOPSIS"
+.LP
+.B #include <unbound.h>
+.LP
+\fIstruct ub_ctx *\fR
+\fBub_ctx_create\fR(\fIvoid\fR);
+.LP
+\fIvoid\fR
+\fBub_ctx_delete\fR(\fIstruct ub_ctx*\fR ctx);
+.LP
+\fIint\fR
+\fBub_ctx_set_option\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR opt, \fIchar*\fR val);
+.LP
+\fIint\fR
+\fBub_ctx_config\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR fname);
+.LP
+\fIint\fR
+\fBub_ctx_set_fwd\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR addr);
+.LP
+\fIint\fR
+\fBub_ctx_resolvconf\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR fname);
+.LP
+\fIint\fR
+\fBub_ctx_hosts\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR fname);
+.LP
+\fIint\fR
+\fBub_ctx_add_ta\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR ta);
+.LP
+\fIint\fR
+\fBub_ctx_add_ta_file\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR fname);
+.LP
+\fIint\fR
+\fBub_ctx_trustedkeys\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR fname);
+.LP
+\fIint\fR
+\fBub_ctx_debugout\fR(\fIstruct ub_ctx*\fR ctx, \fIFILE*\fR out);
+.LP
+\fIint\fR
+\fBub_ctx_debuglevel\fR(\fIstruct ub_ctx*\fR ctx, \fIint\fR d);
+.LP
+\fIint\fR
+\fBub_ctx_async\fR(\fIstruct ub_ctx*\fR ctx, \fIint\fR dothread);
+.LP
+\fIint\fR
+\fBub_poll\fR(\fIstruct ub_ctx*\fR ctx);
+.LP
+\fIint\fR
+\fBub_wait\fR(\fIstruct ub_ctx*\fR ctx);
+.LP
+\fIint\fR
+\fBub_fd\fR(\fIstruct ub_ctx*\fR ctx);
+.LP
+\fIint\fR
+\fBub_process\fR(\fIstruct ub_ctx*\fR ctx);
+.LP
+\fIint\fR
+\fBub_resolve\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR name, 
+.br
+           \fIint\fR rrtype, \fIint\fR rrclass, \fIint*\fR secure, 
+.br
+           \fIint*\fR data, \fIstruct ub_result**\fR result);
+.LP
+\fIint\fR
+\fBub_resolve_async\fR(\fIstruct ub_ctx*\fR ctx, \fIchar*\fR name, 
+.br
+                 \fIint\fR rrtype, \fIint\fR rrclass, \fIvoid*\fR mydata, 
+.br
+                 \fIub_callback_t\fR callback, \fIint*\fR async_id);
+.LP
+\fIint\fR
+\fBub_cancel\fR(\fIstruct ub_ctx*\fR ctx, \fIint\fR async_id);
+.LP
+\fIvoid\fR
+\fBub_resolve_free\fR(\fIstruct ub_result*\fR result);
+.LP
+\fIconst char *\fR
+\fBub_strerror\fR(\fIint\fR err);
+.SH "DESCRIPTION"
+.LP
+.B Unbound 
+is an implementation of a DNS resolver, that does caching and 
+DNSSEC validation. This is the library API, for using the \-lunbound library.
+The server daemon is described in \fIunbound\fR(8).
+The library can be used to convert hostnames to ip addresses, and back,
+and obtain other information from the DNS. The library performs public\-key
+validation of results with DNSSEC.
+.P
+The library uses a variable of type \fIstruct ub_ctx\fR to keep context
+between calls. The user must maintain it, creating it with
+.B ub_ctx_create
+and deleting it with
+.B ub_ctx_delete\fR.
+It can be created and deleted at any time. Creating it anew removes any 
+previous configuration (such as trusted keys) and clears any cached results.
+.P
+The functions are thread\-safe, and a context an be used in a threaded (as 
+well as in a non\-threaded) environment. Also resolution (and validation) 
+can be performed blocking and non\-blocking (also called asynchronous). 
+The async method returns from the call immediately, so that processing 
+can go on, while the results become available later. 
+.P
+The functions are discussed in turn below.
+.SH "FUNCTIONS"
+.TP 
+.B ub_ctx_create
+Create a new context, initialised with defaults.
+The information from /etc/resolv.conf and /etc/hosts is not utilised 
+by default. Use 
+.B ub_ctx_resolvconf
+and
+.B ub_ctx_hosts
+to read them.
+.TP
+.B ub_ctx_delete
+Delete validation context and free associated resources.
+Outstanding async queries are killed and callbacks are not called for them.
+.TP
+.B ub_ctx_set_option
+A power\-user interface that lets you specify one of the options from the
+config file format, see \fIunbound.conf\fR(5). Not all options are
+relevant. For some specific options, such as adding trust anchors, special
+routines exist. Pass the option name with the trailing ':'.
+.TP
+.B ub_ctx_config
+A power\-user interface that lets you specify an unbound config file, see
+\fIunbound.conf\fR(5), which is read for configuration. Not all options are
+relevant. For some specific options, such as adding trust anchors, special
+routines exist.
+.TP
+.B ub_ctx_set_fwd
+Set machine to forward DNS queries to, the caching resolver to use. 
+IP4 or IP6 address. Forwards all DNS requests to that machine, which 
+is expected to run a recursive resolver. If the proxy is not 
+DNSSEC capable, validation may fail. Can be called several times, in 
+that case the addresses are used as backup servers.
+At this time it is only possible to set configuration before the
+first resolve is done.
+.TP
+.B ub_ctx_resolvconf
+Read list of nameservers to use from the filename given.
+Usually "/etc/resolv.conf". Uses those nameservers as caching proxies.
+If they do not support DNSSEC, validation may fail.
+Only nameservers are picked up, the searchdomain, ndots and other
+settings from \fIresolv.conf\fR(5) are ignored.
+If fname NULL is passed, "/etc/resolv.conf" is used.
+At this time it is only possible to set configuration before the
+first resolve is done.
+.TP
+.B ub_ctx_hosts
+Read list of hosts from the filename given.
+Usually "/etc/hosts". When queried for, these addresses are not marked 
+DNSSEC secure. If fname NULL is passed, "/etc/hosts" is used.
+At this time it is only possible to set configuration before the
+first resolve is done.
+.TP
+.B
+ub_ctx_add_ta
+Add a trust anchor to the given context.
+At this time it is only possible to add trusted keys before the
+first resolve is done.
+The format is a string, similar to the zone-file format,
+[domainname] [type] [rdata contents]. Both DS and DNSKEY records are accepted.
+.TP
+.B ub_ctx_add_ta_file
+Add trust anchors to the given context.
+Pass name of a file with DS and DNSKEY records in zone file format.
+At this time it is only possible to add trusted keys before the
+first resolve is done.
+.TP
+.B ub_ctx_trustedkeys
+Add trust anchors to the given context.
+Pass the name of a bind-style config file with trusted-keys{}.
+At this time it is only possible to add trusted keys before the
+first resolve is done.
+.TP
+.B ub_ctx_debugout
+Set debug and error log output to the given stream. Pass NULL to disable
+output. Default is stderr. File-names or using syslog can be enabled
+using config options, this routine is for using your own stream.
+.TP
+.B ub_ctx_debuglevel
+Set debug verbosity for the context. Output is directed to stderr.
+Higher debug level gives more output.
+.TP
+.B ub_ctx_async
+Set a context behaviour for asynchronous action.
+if set to true, enables threading and a call to 
+.B ub_resolve_async 
+creates a thread to handle work in the background.
+If false, a process is forked to handle work in the background.
+Changes to this setting after 
+.B ub_resolve_async 
+calls have been made have no effect (delete and re\-create the context 
+to change).
+.TP
+.B ub_poll
+Poll a context to see if it has any new results.
+Do not poll in a loop, instead extract the fd below to poll for readiness,
+and then check, or wait using the wait routine.
+Returns 0 if nothing to read, or nonzero if a result is available.
+If nonzero, call 
+.B ub_process 
+to do callbacks.
+.TP
+.B ub_wait
+Wait for a context to finish with results. Calls 
+.B ub_process 
+after the wait for you. After the wait, there are no more outstanding 
+asynchronous queries.
+.TP
+.B ub_fd
+Get file descriptor. Wait for it to become readable, at this point
+answers are returned from the asynchronous validating resolver.
+Then call the \fBub_process\fR to continue processing.
+.TP
+.B ub_process
+Call this routine to continue processing results from the validating
+resolver (when the fd becomes readable).
+Will perform necessary callbacks.
+.TP
+.B ub_resolve
+Perform resolution and validation of the target name.
+The name is a domain name in a zero terminated text string.
+The rrtype and rrclass are DNS type and class codes.
+The value secure returns true if the answer validated securely.
+The value data returns true if there was data.
+The result structure is newly allocated with the resulting data.
+.TP
+.B ub_resolve_async
+Perform asynchronous resolution and validation of the target name.
+Arguments mean the same as for \fBub_resolve\fR except no
+data is returned immediately, instead a callback is called later.
+The callback receives a copy of the mydata pointer, that you can use to pass
+information to the callback. The callback type is a function pointer to
+a function declared as
+.IP
+void my_callback_function(void* my_arg, int err, 
+.br
+                  struct ub_result* result);
+.IP
+The async_id is returned so you can (at your option) decide to track it
+and cancel the request if needed.
+.TP
+.B ub_cancel
+Cancel an async query in progress.
+.TP
+.B ub_resolve_free
+Free struct ub_result contents after use.
+.TP
+.B ub_strerror
+Convert error value from one of the unbound library functions 
+to a human readable string.
+.SH "RESULT DATA STRUCTURE"
+.LP
+The result of the DNS resolution and validation is returned as 
+\fIstruct ub_result\fR. The result structure contains the following entries.
+.P
+.nf
+	struct ub_result {
+		char* qname; /* text string, original question */
+		int qtype;   /* type code asked for */
+		int qclass;  /* class code asked for */
+		char** data; /* array of rdata items, NULL terminated*/
+		int* len;    /* array with lengths of rdata items */
+		char* canonname; /* canonical name of result */
+		int rcode;   /* additional error code in case of no data */
+		int havedata; /* true if there is data */
+		int nxdomain; /* true if nodata because name does not exist */
+		int secure;  /* true if result is secure */
+		int bogus;   /* true if a security failure happened */
+	};
+.fi
+.P
+If both secure and bogus are false, security was not enabled for the 
+domain of the query.
+.SH "RETURN VALUES"
+Many routines return an error code. The value 0 (zero) denotes no error
+happened. Other values can be passed to
+.B ub_strerror
+to obtain a readable error string.
+.B ub_strerror
+returns a zero terminated string.
+.B ub_ctx_create
+returns NULL on an error (a malloc failure).
+.B ub_poll
+returns true if some information may be available, false otherwise.
+.B ub_fd
+returns a file descriptor or -1 on error.
+.SH "SEE ALSO"
+\fIunbound.conf\fR(5), 
+\fIunbound\fR(8).
+.SH "AUTHORS"
+.B Unbound
+developers are mentioned in the CREDITS file in the distribution.

doc/plan

@@ -203,14 +203,18 @@ X make overload mode work; phase 0 all ok, phase 1 some threads close ports,
 	  can be used to block AS112 traffic, option to unblock a zone.
 	* after checking acl, do iter: static, blacklist, forwards, recurse.
 * Forward-local-zone to NSD.
-	- include in package, autoforkexec on localhost to do so.
+	- in package, autoforkexec on localhost to do so.
+	- not included. Not necessary for localhost and AS112 service.
 * forward local zone to remote server.
+	- not included. Not necessary for localhost and AS112 service.
 * stub zones - send queries for a zone to configged nameserver.
+	- Can be used for complicated setups. So, run auth server on a 
+	  different port or pc, and stub it on the resolver. Resolver is
+	  not auth for zones, but resolution works. This enforces the split
+	  of recursive and auth servers.
 * test local zones
 	* for speed
 	* for correctness on corner cases
-	* for validation
-	* in case you get data on localzone in an answer (from rootserver).
 
 *** Library use
 * Create library that can do:
@@ -240,14 +244,14 @@ X make overload mode work; phase 0 all ok, phase 1 some threads close ports,
 *** Features features
 * aggressive negative caching for NSEC, NSEC3.
 * multiple queries per question, server exploration, server selection.
-* option to use real entropy for randomness (mix it in once in a while).
-* check query, enforce qdsection, checking for forgery-resilience.
 * NSID support.
 * support TSIG on queries, for validating resolver deployment.
 * Nicer statistics
 * private TTL, dTLS features.
 * retry-mode, where a bogus result triggers a retry-mode query, where a list
   of responses over a time interval is collected, and each is validated.
+  or try in TCP mode. Do not 'try all servers several times', since we must
+  not create packet storms with operator errors.
 * draft-timers, DLV features.
 
 treeshrew/

doc/requirements.txt

@@ -34,7 +34,7 @@ then interface with the modules to perform the necessary processing.
 
 In Section 2 the origins of the Unbound project are documented. Section
 3 lists the goals, while Section 4 lists the explicit non-goals of the
-project.
+project. Section 5 discusses choices made during development.
 
 
 2. History
@@ -138,7 +138,7 @@ o The method by which dnssec-lameness is detected is not secure. DNSSEC lame
   before the validator will properly verify the messages.
 
   Also for zones for which no chain of trust exists, but a DS is given by the
-  parent, dnssec-lameness detection enables. This delivers dnnsec to our 
+  parent, dnssec-lameness detection enables. This delivers dnssec to our 
   clients when possible (for client validators).
 
   The following issue needs to be resolved:
@@ -159,3 +159,50 @@ o The method by which dnssec-lameness is detected is not secure. DNSSEC lame
   on a server, dnssec-lameness detection does not work - no dnssec-lameness 
   is detected. Instead the zone that is dnssec-lame becomes bogus.
 
+o authority features.
+  This is a recursive server, and authority features are out of scope.
+  However, some authority features are expected in a recursor. Things like
+  localhost, reverse lookup for 127.0.0.1, or blocking AS112 traffic.
+  Also redirection of domain names with fixed data is needed by service
+  providers. Limited support is added specifically to address this.
+
+  Adding full authority support, requires much more code, and more complex
+  maintenance.
+
+  The limited support allows adding some static data (for localhost and so),
+  and to respond with a fixed rcode (NXDOMAIN) for domains (such as AS112).
+
+  You can put authority data on a separate server, and set the server in 
+  unbound.conf as stub for those zones, this allows clients to access data 
+  from the server without making unbound authoritative for the zones.
+
+o the access control denies queries before any other processing.
+  This denies queries that are not authoritative, or version.bind, or any.
+  And thus prevents cache-snooping (denied hosts cannot make non-recursive
+  queries and get answers from the cache).
+
+o If a client makes a query without RD bit, in the case of a returned 
+  message from cache which is:
+	answer section: empty
+	auth section: NS record present, no SOA record, no DS record, 
+		maybe NSEC or NSEC3 records present.
+	additional: A records or other relevant records.
+  A SOA record would indicate that this was a NODATA answer.
+  A DS records would indicate a referral.
+  Absence of NS record would indicate a NODATA answer as well.
+
+  Then the receiver does not know whether this was a referral
+  with attempt at no-DS proof) or a nodata answer with attempt
+  at no-data proof. It could be determined by attempting to prove
+  either condition; and looking if only one is valid, but both 
+  proofs could be valid, or neither could be valid, which creates
+  doubt. This case is validated by unbound as a 'referral' which
+  ascertains that RRSIGs are OK (and not omitted), but does not
+  check NSEC/NSEC3. 
+
+o Case preservation
+  Unbound preserves the casing received from authority servers as best 
+  as possible. It compresses without case, so case can get lost there.
+  The casing from the authority server is used in preference to the casing
+  of the query name. This is different from BIND. RFC4343 allows either 
+  behaviour.

doc/unbound-checkconf.8

@@ -1,3 +1,4 @@
+.TH "unbound-checkconf" "8" "@date@" "NLnet Labs" "unbound @version@"
 .\"
 .\" unbound-checkconf.8 -- unbound configuration checker manual
 .\"
@@ -6,40 +7,37 @@
 .\" See LICENSE for the license.
 .\"
 .\"
-.Dd @date@
-.Dt unbound-checkconf 8
-.Sh NAME
+.SH "NAME"
+.LP
 unbound-checkconf
-.Nd Check unbound configuration file for errors.
-.Sh SYNOPSIS
-.Nm unbound-checkconf
-.Op Fl h
-.Op cfgfile
-.Sh DESCRIPTION
-.Ic Unbound-checkconf
+\- Check unbound configuration file for errors.
+.SH "SYNOPSIS"
+.B unbound-checkconf
+.RB [ \-h ]
+.IR cfgfile
+.SH "DESCRIPTION"
+.B Unbound-checkconf
 checks the configuration file for the
-.Xr unbound 8
+\fIunbound\fR(8)
 DNS resolver for syntax and other errors. 
-The config file syntax is
-described in 
-.Xr unbound.conf 5 .
-.Pp
+The config file syntax is described in 
+\fIunbound.conf\fR(5).
+.P
 The available options are:
-.Bl -tag -width indent
-.It Fl h
+.TP
+.B \-h
 Show the version and commandline option help.
-.It cfgfile
+.TP
+.I cfgfile
 The config file to read with settings for unbound. It is checked.
 If omitted, the config file at the default location is checked.
-.Sh EXIT CODE
+.SH "EXIT CODE"
 The unbound-checkconf program exits with status code 1 on error, 
 0 for a correct config file.
-.El
-.Sh FILES
-.Bl -tag -width indent
-.It Pa /etc/unbound/unbound.conf
+.SH "FILES"
+.TP
+.I /etc/unbound/unbound.conf
 unbound configuration file.
-.El
-.Sh SEE ALSO
-.Xr unbound.conf 5 , 
-.Xr unbound 8 .
+.SH "SEE ALSO"
+\fIunbound.conf\fR(5), 
+\fIunbound\fR(8).

doc/unbound-host.1

@@ -0,0 +1,93 @@
+.TH "unbound\-host" "1" "@date@" "NLnet Labs" "unbound @version@"
+.\"
+.\" unbound-host.1 -- unbound DNS lookup utility
+.\"
+.\" Copyright (c) 2007, NLnet Labs. All rights reserved.
+.\"
+.\" See LICENSE for the license.
+.\"
+.\"
+.SH "NAME"
+.LP
+.B unbound\-host
+\- unbound DNS lookup utility
+.SH "SYNOPSIS"
+.LP
+.B unbound\-host
+.RB [ \-vdh ]
+.RB [ \-c 
+.IR class ]
+.RB [ \-t
+.IR type ]
+.I hostname
+.RB [ \-y
+.IR key ]
+.RB [ \-f
+.IR keyfile ]
+.RB [ \-F
+.IR namedkeyfile ]
+.SH "DESCRIPTION"
+.LP
+.B Unbound\-host
+uses the unbound validating resolver to query for the hostname and display
+results. With the \fB\-v\fR option it displays validation 
+status: secure, insecure, bogus (security failure).
+.P
+The available options are:
+.TP
+.I hostname
+This name is resolved (looked up in the DNS).
+If a IPv4 or IPv6 address is given, a reverse lookup is performed.
+.TP
+.B \-h
+Show the version and commandline option help.
+.TP
+.B \-v
+Enable verbose output and it shows validation results, on every line.
+Secure means that the NXDOMAIN (no such domain name), nodata (no such data)
+or positive data response validated correctly with one of the keys.
+Insecure means that that domain name has no security set up for it.
+Bogus (security failure) means that the response failed one or more checks,
+it is likely wrong, outdated, tampered with, or broken.
+.TP
+.B \-d
+Enable debug output to stderr. One \-d shows what the resolver and validator
+are doing and may tell you what is going on. More times, \-d \-d, gives a
+lot of output, with every packet sent and received.
+.TP
+.B \-c \fIclass
+Specify the class to lookup for, the default is IN the internet class.
+.TP
+.B \-t \fItype
+Specify the type of data to lookup. The default looks for IPv4, IPv6 and
+mail handler data, or domain name pointers for reverse queries.
+.TP
+.B \-y \fIkey
+Specify a public key to use as trust anchor. This is the base for a chain
+of trust that is built up from the trust anchor to the response, in order
+to validate the response message. Can be given as a DS or DNSKEY record.
+For example \-y "example.com DS 31560 5 1 1CFED84787E6E19CCF9372C1187325972FE546CD".
+.TP
+.B \-f \fIkeyfile
+Reads keys from a file. Every line has a DS or DNSKEY record, in the format
+as for \-y. The zone file format, the same as dig and drill produce.
+.TP
+.B \-F \fInamedkeyfile
+Reads keys from a BIND\-style named.conf file. Only the trusted\-key {}; entries
+are read.
+.SH "EXAMPLES"
+.LP
+Some examples of use.
+.P
+$ unbound\-host www.example.com
+.P
+$ unbound\-host \-v \-y "example.com DS 31560 5 1 1CFED84787E6E19CCF9372C1187325972FE546CD" www.example.com
+.P
+$ unbound\-host \-v \-y "example.com DS 31560 5 1 1CFED84787E6E19CCF9372C1187325972FE546CD" 192.0.2.153
+.SH "EXIT CODE"
+The unbound\-host program exits with status code 1 on error, 
+0 on no error. The data may not be available on exit code 0, exit code 1
+means the lookup encountered a fatal error.
+.SH "SEE ALSO"
+\fIunbound.conf\fR(5), 
+\fIunbound\fR(8).

doc/unbound.8

@@ -1,3 +1,4 @@
+.TH "unbound" "8" "@date@" "NLnet Labs" "unbound @version@"
 .\"
 .\" unbound.8 -- unbound manual
 .\"
@@ -6,42 +7,45 @@
 .\" See LICENSE for the license.
 .\"
 .\"
-.Dd @date@
-.Dt unbound 8
-.Sh NAME
-unbound
-.Nd Unbound DNS validating resolver @version@.
-.Sh SYNOPSIS
-.Nm unbound
-.Op Fl h
-.Op Fl d
-.Op Fl v
-.Op Fl c Ar cfgfile
-.Sh DESCRIPTION
-.Ic Unbound 
+.SH "NAME"
+.LP
+.B unbound
+\- Unbound DNS validating resolver @version@.
+.SH "SYNOPSIS"
+.LP
+.B unbound
+.RB [ \-h ]
+.RB [ \-d ]
+.RB [ \-v ]
+.RB [ \-c 
+.IR cfgfile ]
+.SH "DESCRIPTION"
+.LP
+.B Unbound 
 is an implementation of a DNS resolver, that does caching and 
 DNSSEC validation.
-.Pp
+.P
 The available options are:
-.Bl -tag -width indent
-.It Fl h
+.TP
+.B \-h
 Show the version and commandline option help.
-.It Fl c Ar cfgfile
+.TP
+.B \-c\fI cfgfile
 Set the config file with settings for unbound to read instead of the 
 file at default location /etc/unbound/unbound.conf. The syntax is
-described in 
-.Xr unbound.conf 5 .
-.It Fl d
+described in \fIunbound.conf\fR(5).
+.TP
+.B \-d
 Debug flag, do not fork into the background, but stay attached to the
 console. This flag will also delay writing to the logfile until the
-thread-spawn time. So that most config and setup errors appear on stderr.
-.It Fl v
+thread\-spawn time. So that most config and setup errors appear on stderr.
+.TP
+.B \-v
 Increase verbosity. If given multiple times, more information is logged.
 This is in addition to the verbosity (if any) from the config file.
-.El
-.Sh SEE ALSO
-.Xr unbound.conf 5 , 
-.Xr unbound-checkconf 8 .
-.Sh AUTHORS
-.Ic Unbound
+.SH "SEE ALSO"
+\fIunbound.conf\fR(5), 
+\fIunbound\-checkconf\fR(8).
+.SH "AUTHORS"
+.B Unbound
 developers are mentioned in the CREDITS file in the distribution.

doc/unbound.conf.5

@@ -1,3 +1,4 @@
+.TH "unbound.conf" "5" "@date@" "NLnet Labs" "unbound @version@"
 .\"
 .\" unbound.conf.5 -- unbound.conf manual
 .\"
@@ -6,39 +7,44 @@
 .\" See LICENSE for the license.
 .\"
 .\"
-.Dd @date@
-.Os FreeBSD
-.Dt unbound.conf 5
-.Sh NAME
-.Nm unbound.conf
-.Nd Unbound configuration file.
-.Sh SYNOPSIS
-.Nm unbound.conf
-.Sh DESCRIPTION
-.Ic unbound.conf
+.SH "NAME"
+.LP
+.B unbound.conf
+\- Unbound configuration file.
+.SH "SYNOPSIS"
+.LP
+.B unbound.conf
+.SH "DESCRIPTION"
+.LP
+.B unbound.conf
 is used to configure
-.Xr unbound 8 .
+\fIunbound\fR(8).
 The file format has attributes and values. Some attributes have attributes inside them.
 The notation is: attribute: value.
-.Pp
+.P
 Comments start with # and last to the end of line. Empty lines are
 ignored as is whitespace at the beginning of a line.
-.Pp
+.P
 The utility 
-.Xr unbound-checkconf 8
+\fIunbound\-checkconf\fR(8)
 can be used to check unbound.conf prior to usage.
-.Sh EXAMPLE
+.SH "EXAMPLE"
 An example config file is shown below. Copy this to /etc/unbound/unbound.conf
 and start the server with:
+.P
 .nf
-	$ unbound -c /etc/unbound/unbound.conf 
+	$ unbound \-c /etc/unbound/unbound.conf 
 .fi
+.P
 Most settings are the defaults. Stop the server with:
+.P
 .nf
 	$ kill `cat /etc/unbound/unbound.pid`
 .fi
+.P
 Below is a minimal config file. The source distribution contains an extensive
 example.conf file with all the options.
+.P
 .nf
 # unbound.conf(5) config file for unbound(8).
 server:
@@ -48,192 +54,268 @@ server:
 	# logfile: "/etc/unbound/unbound.log"  #uncomment to use logfile.
 	pidfile: "/etc/unbound/unbound.pid"
 	# verbosity: 1		# uncomment and increase to get more logging.
+	# listen on all interfaces, answer queries from the local subnet.
+	interface: 0.0.0.0
+	interface: ::0
+	access\-control: 10.0.0.0/8 allow
+	access\-control: 2001:DB8::/64 allow
 .fi
-.Sh FILE FORMAT
+.SH "FILE FORMAT"
+.LP
 There must be whitespace between keywords. Attribute keywords end with a colon ':'. An attribute
 is followed by its containing attributes, or a value.
-.Pp
+.P
 Files can be included using the
-.Ic include:
+.B include:
 directive. It can appear anywhere, and takes a single filename as an argument.
 Processing continues as if the text from the included file was copied into
 the config file at that point.
-.Ss Server Options
+.SS "Server Options"
 These options are part of the
-.Ic server:
+.B server:
 clause.
-.Bl -tag -width indent
-.It \fBverbosity:\fR <number>
+.TP
+.B verbosity: \fI<number>
 The verbosity number, level 0 means no verbosity, only errors. Level 1 
-gives operational information. Level 2 gives query level information, 
-output per query. Level 3 gives algorithm level information.  
+gives operational information. Level 2 gives detailed operational
+information. Level 3 gives query level information, output per query. 
+Level 4 gives algorithm level information.  
 Default is level 1. The verbosity can also be increased from the commandline,
 see
-.Xr unbound 8 .
-.It \fBnum-threads:\fR <number>
+\fIunbound\fR(8).
+.TP
+.B statistics-interval: \fI<seconds>
+The number of seconds between printing statistics to the log for every thread.
+Disable with value 0 or "". Default is disabled. 
+.TP
+.B num\-threads: \fI<number>
 The number of threads to create to serve clients. Use 1 for no threading.
-.It \fBport:\fR <port number>
+.TP
+.B port: \fI<port number>
 The port number, default 53, on which the server responds to queries.
-.It \fBinterface:\fR <ip address>
+.TP
+.B interface: \fI<ip address>
 Interface to use to connect to the network. This interface is listened to
 for queries from clients, and answers to clients are given from it.
 Can be given multiple times to work on several interfaces. If none are 
 given the default is to listen to localhost.
-The interfaces are not changed on a reload (kill -HUP) but only on restart.
-.It \fBoutgoing-interface:\fR <ip address>
+The interfaces are not changed on a reload (kill \-HUP) but only on restart.
+.TP
+.B interface-automatic: \fI<yes or no>
+Detect source interface on UDP queries and copy them to replies.  This 
+feature is experimental, and needs support in your OS for IPv6 
+(and its socket options) and IPv4 (and have source-interface socket options). 
+Default value is no.
+.TP
+.B outgoing\-interface: \fI<ip address>
 Interface to use to connect to the network. This interface is used to send
 queries to authoritative servers and receive their replies. Can be given 
 multiple times to work on several interfaces. If none are given the 
 default (all) is used. You can specify the same interfaces in 
-.Ic interface:
+.B interface:
 and
-.Ic outgoing-interface:
+.B outgoing\-interface:
 lines, the interfaces are then used for both purposes. Outgoing queries are 
 sent via a random outgoing interface to counter spoofing.
-.It \fBoutgoing-port:\fR <port number>
+.TP
+.B outgoing\-port: \fI<port number>
 The starting port number where the outgoing query port range is allocated.
 Default is 1053.
-.It \fBoutgoing-range:\fR <number>
+.TP
+.B outgoing\-range: \fI<number>
 Number of ports to open. This number is opened per thread for every outgoing
 query interface. Must be at least 1. Default is 16.
 Larger numbers give more protection against spoofing attempts, but need
 extra resources from the operating system.
-.It \fBoutgoing-num-tcp:\fR <number>
+.TP
+.B outgoing\-num\-tcp: \fI<number>
 Number of outgoing TCP buffers to allocate per thread. Default is 10. If set
 to 0, or if do_tcp is "no", no TCP queries to authoritative servers are done.
-.It \fBincoming-num-tcp:\fR <number>
+.TP
+.B incoming\-num\-tcp: \fI<number>
 Number of incoming TCP buffers to allocate per thread. Default is 10. If set
 to 0, or if do_tcp is "no", no TCP queries from clients are accepted.
-.It \fBmsg-buffer-size:\fR <number>
+.TP
+.B msg\-buffer\-size: \fI<number>
 Number of bytes size of the message buffers. Default is 65552 bytes, enough
 for 64 Kb packets, the maximum DNS message size. No message larger than this
 can be sent or received. Can be reduced to use less memory, but some requests
 for DNS data, such as for huge resource records, will result in a SERVFAIL 
 reply to the client.
-.It \fBmsg-cache-size:\fR <number>
+.TP
+.B msg\-cache\-size: \fI<number>
 Number of bytes size of the message cache. Default is 4 megabytes.
-.It \fBmsg-cache-slabs:\fR <number>
+A plain number is in bytes, append 'k', 'm' or 'g' for kilobytes, megabytes
+or gigabytes (1024*1024 bytes in a megabyte).
+.TP
+.B msg\-cache\-slabs: \fI<number>
 Number of slabs in the message cache. Slabs reduce lock contention by threads.
 Must be set to a power of 2. Setting (close) to the number of cpus is a 
 reasonable guess.
-.It \fBnum-queries-per-thread:\fR <number>
+.TP
+.B num\-queries\-per\-thread: \fI<number>
 The number of queries that every thread will service simultaneously.
 If more queries arrive that need servicing, they are dropped. This forces
 the client to resend after a timeout; allowing the server time to work on
 the existing queries. Default 1024.
-.It \fBrrset-cache-size:\fR <number>
+.TP
+.B rrset\-cache\-size: \fI<number>
 Number of bytes size of the RRset cache. Default is 4 megabytes.
-.It \fBrrset-cache-slabs:\fR <number>
+A plain number is in bytes, append 'k', 'm' or 'g' for kilobytes, megabytes
+or gigabytes (1024*1024 bytes in a megabyte).
+.TP
+.B rrset\-cache\-slabs: \fI<number>
 Number of slabs in the RRset cache. Slabs reduce lock contention by threads.
 Must be set to a power of 2. 
-.It \fBcache-max-ttl:\fR <seconds>
+.TP
+.B cache\-max\-ttl: \fI<seconds>
 Time to live maximum for RRsets and messages in the cache. Default is 
-864000 seconds (10 days). If the maximum kicks in, responses to clients 
+86400 seconds (1 day). If the maximum kicks in, responses to clients 
 still get decrementing TTLs based on the original (larger) values. 
 When the internal TTL expires, the cache item has expired.
 Can be set lower to force the resolver to query for data often, and not
 trust (very large) TTL values.
-.It \fBinfra-host-ttl:\fR <seconds>
+.TP
+.B infra\-host\-ttl: \fI<seconds>
 Time to live for entries in the host cache. The host cache contains 
 roundtrip timing and EDNS support information. Default is 900.
-.It \fBinfra-lame-ttl:\fR <seconds>
+.TP
+.B infra\-lame\-ttl: \fI<seconds>
 The time to live when a delegation is discovered to be lame. Default is 900.
-.It \fBinfra-cache-slabs:\fR <number>
+.TP
+.B infra\-cache\-slabs: \fI<number>
 Number of slabs in the infrastructure cache. Slabs reduce lock contention 
 by threads. Must be set to a power of 2. 
-.It \fBinfra-cache-numhosts:\fR <number>
+.TP
+.B infra\-cache\-numhosts: \fI<number>
 Number of hosts for which information is cached. Default is 10000.
-.It \fBinfra-cache-lame-size:\fR <number>
+.TP
+.B infra\-cache\-lame\-size: \fI<number>
 Number of bytes that the lameness cache per host is allowed to use. Default
 is 10 kb, which gives maximum storage for a couple score zones, depending on 
 the lame zone name lengths.
-.It \fBdo-ip4:\fR <yes or no>
-Enable or disable whether ip4 queries are answered. Default is yes.
-.It \fBdo-ip6:\fR <yes or no>
-Enable or disable whether ip6 queries are answered. Default is yes.
-.It \fBdo-udp:\fR <yes or no>
-Enable or disable whether UDP queries are answered. Default is yes.
-.It \fBdo-tcp:\fR <yes or no>
-Enable or disable whether TCP queries are answered. Default is yes.
-.It \fBchroot:\fR <directory>
+.TP
+.B do\-ip4: \fI<yes or no>
+Enable or disable whether ip4 queries are answered or issued. Default is yes.
+.TP
+.B do\-ip6: \fI<yes or no>
+Enable or disable whether ip6 queries are answered or issued. Default is yes.
+If disabled, queries are not answered on IPv6, and queries are not sent on
+IPv6 to the internet nameservers.
+.TP
+.B do\-udp: \fI<yes or no>
+Enable or disable whether UDP queries are answered or issued. Default is yes.
+.TP
+.B do\-tcp: \fI<yes or no>
+Enable or disable whether TCP queries are answered or issued. Default is yes.
+.TP
+.B access\-control: \fI<IP netblock> <action>
+The netblock is given as an IP4 or IP6 address with /size appended for a 
+classless network block. The action can be deny, refuse or allow.
+Deny stops queries from hosts from that netblock.
+Refuse stops queries too, but sends a DNS rcode REFUSED error message back.
+Allow gives access to clients from that netblock.
+By default only localhost is allowed, the rest is refused.
+The default is refused, because that is protocol\-friendly. The DNS protocol
+is not designed to handle dropped packets due to policy, and dropping may 
+result in (possibly excessive) retried queries.
+.TP
+.B chroot: \fI<directory>
 If given a chroot is done to the given directory. The default is 
 "/etc/unbound". If you give "" no chroot is performed.
-.It \fBusername:\fR <name>
+.TP
+.B username: \fI<name>
 If given, after binding the port the user privileges are dropped. Default is
 "unbound". If you give username: "" no user change is performed. 
-.Pp
+.IP
 If this user is not capable of binding the
 port, reloads (by signal HUP) will still retain the opened ports.
 If you change the port number in the config file, and that new port number 
 requires privileges, then a reload will fail; a restart is needed.
-.It \fBdirectory:\fR <directory>
+.TP
+.B directory: \fI<directory>
 Sets the working directory for the program.
-.It \fBlogfile:\fR <filename>
+.TP
+.B logfile: \fI<filename>
 If "" is given, logging goes to stderr, or nowhere once daemonized.
 The logfile is appended to, in the following format: 
+.nf
 [seconds since 1970] unbound[pid:tid]: type: message. 
-If this option is given, the use-syslog is option is set to "no".
+.fi
+If this option is given, the use\-syslog is option is set to "no".
 The logfile is reopened (for append) when the config file is reread, on 
 SIGHUP.
-.It \fBuse-syslog:\fR <yes or no>
+.TP
+.B use\-syslog: \fI<yes or no>
 Sets unbound to send log messages to the syslogd, using 
-.Xr syslog 3 .
+\fIsyslog\fR(3). 
 The log facility LOG_DAEMON is used, with identity "unbound".
-The logfile setting is overridden when use-syslog is turned on.
+The logfile setting is overridden when use\-syslog is turned on.
 The default is to log to syslog.
-.It \fBpidfile:\fR <filename>
+.TP
+.B pidfile: \fI<filename>
 The process id is written to the file. Default is "/etc/unbound/unbound.pid". 
 So,
 .nf
-kill -HUP `cat /etc/unbound/unbound.pid` 
+kill \-HUP `cat /etc/unbound/unbound.pid` 
 .fi
 triggers a reload,
 .nf
-kill -QUIT `cat /etc/unbound/unbound.pid` 
+kill \-QUIT `cat /etc/unbound/unbound.pid` 
 .fi
 gracefully terminates.
-.It \fBroot-hints:\fR <filename>
+.TP
+.B root\-hints: \fI<filename>
 Read the root hints from this file. Default is nothing, using builtin hints
 for the IN class. The file has the format of zone files, with root 
 nameserver names and addresses only. The default may become outdated,
-when servers change, therefore it is good practice to use a root-hints file.
-.It \fBhide-identity:\fR <yes or no>
+when servers change, therefore it is good practice to use a root\-hints file.
+.TP
+.B hide\-identity: \fI<yes or no>
 If enabled id.server and hostname.bind queries are refused.
-.It \fBidentity:\fR <string>
+.TP
+.B identity: \fI<string>
 Set the identity to report. If set to "", the default, then the hostname
 of the server is returned.
-.It \fBhide-version:\fR <yes or no>
+.TP
+.B hide\-version: \fI<yes or no>
 If enabled version.server and version.bind queries are refused.
-.It \fBversion:\fR <string>
+.TP
+.B version: \fI<string>
 Set the version to report. If set to "", the default, then the package
 version is returned.
-.It \fBtarget-fetch-policy:\fR <"list of numbers">
+.TP
+.B target\-fetch\-policy: \fI<"list of numbers">
 Set the target fetch policy used by unbound to determine if it should fetch
 nameserver target addresses opportunistically. The policy is described per
 dependency depth. 
-.Pp
+.IP
 The number of values determines the maximum dependency depth
 that unbound will pursue in answering a query.  
-A value of -1 means to fetch all targets opportunistically for that dependency
+A value of \-1 means to fetch all targets opportunistically for that dependency
 depth. A value of 0 means to fetch on demand only. A positive value fetches
 that many targets opportunistically. 
-.Pp
+.IP
 Enclose the list between quotes ("") and put spaces between numbers.
 The default is "3 2 1 0 0". Setting all zeroes, "0 0 0 0 0" gives behaviour
-closer to that of BIND 9, while setting "-1 -1 -1 -1 -1" gives behaviour 
+closer to that of BIND 9, while setting "\-1 \-1 \-1 \-1 \-1" gives behaviour 
 rumoured to be closer to that of BIND 8.
-.It \fBharden-short-bufsize:\fR <yes or no>
+.TP
+.B harden\-short\-bufsize: \fI<yes or no>
 Very small EDNS buffer sizes from queries are ignored. Default is off, since
 it is legal protocol wise to send these, and unbound tries to give very 
 small answers to these queries, where possible.
-.It \fBharden-large-queries:\fR <yes or no>
+.TP
+.B harden\-large\-queries: \fI<yes or no>
 Very large queries are ignored. Default is off, since it is legal protocol
 wise to send these, and could be necessary for operation if TSIG or EDNS
 payload is very large.
-.It \fBharden-glue:\fR <yes or no>
+.TP
+.B harden\-glue: \fI<yes or no>
 Will trust glue only if it is within the servers authority. Default is on.
-.It \fBharden-dnssec-stripped:\fR <yes or no>
-Require DNSSEC data for trust-anchored zones, if such data is absent,
+.TP
+.B harden\-dnssec\-stripped: \fI<yes or no>
+Require DNSSEC data for trust\-anchored zones, if such data is absent,
 the zone becomes bogus. If turned off, and no DNSSEC data is received
 (or the DNSKEY data fails to validate), then the zone is made insecure, 
 this behaves like there is no trust anchor. You could turn this off if 
@@ -241,60 +323,71 @@ you are sometimes behind an intrusive firewall (of some sort) that
 removes DNSSEC data from packets, or a zone changes from signed to 
 unsigned to badly signed often. If turned off you run the risk of a 
 downgrade attack that disables security for a zone. Default is on.
-.It \fBdo-not-query-address:\fR <IP address>
+.TP
+.B do\-not\-query\-address: \fI<IP address>
 Do not query the given IP address. Can be IP4 or IP6. Append /num to 
 indicate a classless delegation netblock, for example like
 10.2.3.4/24 or 2001::11/64.
-.It \fBdo-not-query-localhost:\fR <yes or no>
-If yes, localhost is added to the do-not-query-address entries, both
+.TP
+.B do\-not\-query\-localhost: \fI<yes or no>
+If yes, localhost is added to the do\-not\-query\-address entries, both
 IP6 ::1 and IP4 127.0.0.1/8. If no, then localhost can be used to send
 queries to. Default is yes.
-.It \fBmodule-config:\fR <"module names">
+.TP
+.B module\-config: \fI<"module names">
 Module configuration, a list of module names separated by spaces, surround
 the string with quotes (""). The modules can be validator, iterator.
-Setting this to "iterator" will result in a non-validating server.
+Setting this to "iterator" will result in a non\-validating server.
 Setting this to "validator iterator" will turn on DNSSEC validation.
-You must also set trust-anchors for validation to be useful.
-.It \fBtrust-anchor-file:\fR <filename>
+You must also set trust\-anchors for validation to be useful.
+.TP
+.B trust\-anchor\-file: \fI<filename>
 File with trusted keys for validation. Both DS and DNSKEY entries can appear
 in the file. The format of the file is the standard DNS Zone file format.
 Default is "", or no trust anchor file.
-.It \fBtrust-anchor:\fR <"Resource Record">
+.TP
+.B trust\-anchor: \fI<"Resource Record">
 A DS or DNSKEY RR for a key to use for validation. Multiple entries can be
-given to specify multiple trusted keys, in addition to the trust-anchor-files.
+given to specify multiple trusted keys, in addition to the trust\-anchor\-files.
 The resource record is entered in the same format as 'dig' or 'drill' prints
 them, the same format as in the zone file. Has to be on a single line, with
 "" around it. A TTL can be specified for ease of cut and paste, but is ignored. 
 A class can be specified, but class IN is default.
-.It \fBtrusted-keys-file:\fR <filename>
+.TP
+.B trusted\-keys\-file: \fI<filename>
 File with trusted keys for validation. Specify more than one file
-with several entries, one file per entry. Like \fBtrust-anchor-file\fR
-but has a different file format. Format is BIND-9 style format, 
-the trusted-keys { name flag proto algo "key"; }; clauses are read.
-.It \fBval-override-date:\fR <rrsig-style date spec>
+with several entries, one file per entry. Like \fBtrust\-anchor\-file\fR
+but has a different file format. Format is BIND\-9 style format, 
+the trusted\-keys { name flag proto algo "key"; }; clauses are read.
+.TP
+.B val\-override\-date: \fI<rrsig\-style date spec>
 Default is "" or "0", which disables this debugging feature. If enabled by
 giving a RRSIG style date, that date is used for verifying RRSIG inception
 and expiration dates, instead of the current date. Do not set this unless 
 you are debugging signature inception and expiration.
-.It \fBval-bogus-ttl:\fR <number>
+.TP
+.B val\-bogus\-ttl: \fI<number>
 The time to live for bogus data. This is data that has failed validation;
 due to invalid signatures or other checks. The TTL from that data cannot be
 trusted, and this value is used instead. The value is in seconds, default 900.
 The time interval prevents repeated revalidation of bogus data.
-.It \fBval-clean-additional:\fR <yes or no>
+.TP
+.B val\-clean\-additional: \fI<yes or no>
 Instruct the validator to remove data from the additional section of secure
 messages that are not signed properly. Messages that are insecure, bogus,
 indeterminate or unchecked are not affected. Default is yes. Use this setting
 to protect the users that rely on this validator for authentication from 
 protentially bad data in the additional section.
-.It \fBval-permissive-mode:\fR <yes or no>
+.TP
+.B val\-permissive\-mode: \fI<yes or no>
 Instruct the validator to mark bogus messages as indeterminate. The security
 checks are performed, but if the result is bogus (failed security), the
 reply is not withheld from the client with SERVFAIL as usual. The client 
 receives the bogus data. For messages that are found to be secure the AD bit 
 is set in replies. Also logging is performed as for full validation.
 The default value is "no". 
-.It \fBval-nsec3-keysize-iterations:\fR <"list of values">
+.TP
+.B val\-nsec3\-keysize\-iterations: \fI<"list of values">
 List of keysize and iteration count values, separated by spaces, surrounded
 by quotes. Default is "1024 150 2048 500 4096 2500". This determines the
 maximum allowed NSEC3 iteration count before a message is simply marked
@@ -302,92 +395,250 @@ insecure instead of performing the many hashing iterations. The list must
 be in ascending order and have at least one entry. If you set it to 
 "1024 65535" there is no restriction to NSEC3 iteration values.
 This table must be kept short; a very long list could cause slower operation.
-.It \fBkey-cache-size:\fR <number>
+.TP
+.B key\-cache\-size: \fI<number>
 Number of bytes size of the key cache. Default is 4 megabytes.
-.It \fBkey-cache-slabs:\fR <number>
+A plain number is in bytes, append 'k', 'm' or 'g' for kilobytes, megabytes
+or gigabytes (1024*1024 bytes in a megabyte).
+.TP
+.B key\-cache\-slabs: \fI<number>
 Number of slabs in the key cache. Slabs reduce lock contention by threads.
 Must be set to a power of 2. Setting (close) to the number of cpus is a 
 reasonable guess.
-.El
-.Ss Stub Zone Options
+.TP
+.B local\-zone: \fI<zone> <type>
+Configure a local zone. The type determines the answer to give if there is
+no match from local\-data. The types are deny, refuse, static, transparent, 
+redirect, nodefault, and are explained below. After that the default settings
+are listed. Use local\-data: to enter data into the local zone. Answers for
+local zones are authoritative DNS answers. By default the zones are class IN.
+.IP
+If you need more complicated authoritative data, with referrals, wildcards,
+CNAME/DNAME support, or DNSSEC authoritative service, setup a stub\-zone for
+it as detailed in the stub zone section below.
+.TP 10
+\h'5'\fIdeny\fR
+Do not send an answer, drop the query.
+If there is a match from local data, the query is answered.
+.TP 10
+\h'5'\fIrefuse\fR
+Send an error message reply, with rcode REFUSED.
+If there is a match from local data, the query is answered.
+.TP 10
+\h'5'\fIstatic\fR
+If there is a match from local data, the query is answered.
+Otherwise, the query is answered with nodata or nxdomain.
+For a negative answer a SOA is included in the answer if present
+as local\-data for the zone apex domain.
+.TP 10
+\h'5'\fItransparent\fR 
+If there is a match from local data, the query is answered.
+Otherwise, the query is resolved normally.
+If no local\-zone is given local\-data causes a transparent zone
+to be created by default.
+.TP 10
+\h'5'\fIredirect\fR 
+The query is answered from the local data for the zone name. 
+There may be no local data beneath the zone name.
+This answers queries for the zone, and all subdomains of the zone
+with the local data for the zone.
+It can be used to redirect a domain to a different address, with 
+local\-zone: "example.com." redirect and 
+local\-data: "example.com. A 127.0.0.1"
+queries for www.example.com and www.foo.example.com are redirected.
+.TP 10
+\h'5'\fInodefault\fR 
+Used to turn off default contents for AS112 zones. The other types
+also turn off default contents for the zone. The 'nodefault' option 
+has no other effect than turning off default contents for the 
+given zone.
+.P
+The default zones are localhost, reverse 127.0.0.1 and ::1, and the AS112
+zones. The AS112 zones are reverse DNS zones for private use and reserved
+IP addresses for which the servers on the internet cannot provide correct
+answers. They are configured by default to give nxdomain (no reverse 
+information) answers. The defaults can be turned off by specifying your
+own local\-zone of that name, or using the 'nodefault' type. Below is a 
+list of the default zone contents.
+.TP 10
+\h'5'\fIlocalhost\fR 
+The IP4 and IP6 localhost information is given. NS and SOA records are provided
+for completeness and to satisfy some DNS update tools. Default content:
+.nf
+local\-zone: "localhost." static
+local\-data: "localhost. 10800 IN NS localhost."
+local\-data: "localhost. 10800 IN 
+    SOA localhost. nobody.invalid. 1 3600 1200 604800 10800"
+local\-data: "localhost. 10800 IN A 127.0.0.1"
+local\-data: "localhost. 10800 IN AAAA ::1"
+.fi
+.TP 10
+\h'5'\fIreverse IPv4 loopback\fR 
+Default content:
+.nf
+local\-zone: "127.in\-addr.arpa." static
+local\-data: "127.in\-addr.arpa. 10800 IN NS localhost."
+local\-data: "127.in\-addr.arpa. 10800 IN 
+    SOA localhost. nobody.invalid. 1 3600 1200 604800 10800"
+local\-data: "1.0.0.127.in\-addr.arpa. 10800 IN 
+    PTR localhost."
+.fi
+.TP 10
+\h'5'\fIreverse IPv6 loopback\fR 
+Default content:
+.nf
+local\-zone: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
+    0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa." static
+local\-data: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
+    0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. 10800 IN 
+    NS localhost."
+local\-data: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
+    0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. 10800 IN 
+    SOA localhost. nobody.invalid. 1 3600 1200 604800 10800"
+local\-data: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
+    0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. 10800 IN 
+    PTR localhost."
+.fi
+.TP 10
+\h'5'\fIreverse RFC1918 local use zones\fR 
+Reverse data for zones 10.in\-addr.arpa, 16.172.in\-addr.arpa to 
+31.172.in\-addr.arpa, 168.192.in\-addr.arpa.
+The \fBlocal\-zone:\fR is set static and as \fBlocal\-data:\fR SOA and NS 
+records are provided.
+.TP 10
+\h'5'\fIreverse RFC3330 IP4 this, link\-local, testnet and broadcast\fR 
+Reverse data for zones 0.in\-addr.arpa, 254.169.in\-addr.arpa, 
+2.0.192.in\-addr.arpa, 255.255.255.255.in\-addr.arpa.
+.TP 10
+\h'5'\fIreverse RFC4291 IP6 unspecified\fR
+Reverse data for zone 
+.nf
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa.
+.fi
+.TP 10
+\h'5'\fIreverse RFC4193 IPv6 Locally Assigned Local Addresses\fR
+Reverse data for zone D.F.ip6.arpa.
+.TP 10
+\h'5'\fIreverse RFC4291 IPv6 Link Local Addresses\fR
+Reverse data for zones 8.E.F.ip6.arpa to B.E.F.ip6.arpa.
+.\" End of local-zone listing.
+.TP 5
+.B local\-data: \fI"<resource record string>"
+Configure local data, which is served in reply to queries for it.
+The query has to match exactly unless you configure the local\-zone as 
+redirect. If not matched exactly, the local\-zone type determines
+further processing. If local\-data is configured that is not a subdomain of
+a local\-zone, a transparent local\-zone is configured. 
+For record types such as TXT, use single quotes, as in 
+local\-data: 'example. TXT "text"'.
+.IP
+If you need more complicated authoritative data, with referrals, wildcards,
+CNAME/DNAME support, or DNSSEC authoritative service, setup a stub\-zone for
+it as detailed in the stub zone section below.
+.SS "Stub Zone Options"
+.LP
 There may be multiple
-.Ic stub-zone:
+.B stub\-zone:
 clauses. Each with a name: and zero or more hostnames or IP addresses.
 For the stub zone this list of nameservers is used. Class IN is assumed.
-.Bl -tag -width indent
-.It \fBname:\fR <domain name>
+.P
+The stub zone can be used to configure authoritative data to be used
+by the resolver that cannot be accessed using the public internet servers.
+This is useful for company\-local data or private zones. Setup an 
+authoritative server on a different host (or different port). Enter a config 
+entry for unbound with 
+.B stub\-addr:
+<ip address of host[@port]>. 
+The unbound resolver can then access the data, without referring to the 
+public internet for it. 
+.P
+This setup allows DNSSEC signed zones to be served by that 
+authoritative server, in which case a trusted key entry with the public key
+can be put in config, so that unbound can validate the data and set the AD 
+bit on replies for the private zone (authoritative servers do not set the 
+AD bit).  This setup makes unbound capable of answering queries for the 
+private zone, and can even set the AD bit ('authentic'), but the AA 
+('authoritative') bit is not set on these replies. 
+.TP
+.B name: \fI<domain name>
 Name of the stub zone.
-.It \fBstub-host:\fR <domain name>
+.TP
+.B stub\-host: \fI<domain name>
 Name of stub zone nameserver. Is itself resolved before it is used.
-.It \fBstub-addr:\fR <IP address>
+.TP
+.B stub\-addr: \fI<IP address>
 IP address of stub zone nameserver. Can be IP 4 or IP 6.
 To use a nondefault port for DNS communication append '@' with the port number.
-.El
-.Ss Forward Zone Options
+.SS "Forward Zone Options"
+.LP
 There may be multiple
-.Ic forward-zone:
+.B forward\-zone:
 clauses. Each with a name: and zero or more hostnames or IP addresses.
 For the forward zone this list of nameservers is used to forward the queries
 to. The servers have to handle further recursion for the query. Class IN is 
-assumed. A forward-zone entry with name "." and a forward-addr target will 
+assumed. A forward\-zone entry with name "." and a forward\-addr target will 
 forward all queries to that other server (unless it can answer from the cache).
-.Bl -tag -width indent
-.It \fBname:\fR <domain name>
+.TP
+.B name: \fI<domain name>
 Name of the forward zone.
-.It \fBforward-host:\fR <domain name>
+.TP
+.B forward\-host: \fI<domain name>
 Name of server to forward to. Is itself resolved before it is used.
-.It \fBforward-addr:\fR <IP address>
+.TP
+.B forward\-addr: \fI<IP address>
 IP address of server to forward to. Can be IP 4 or IP 6.
 To use a nondefault port for DNS communication append '@' with the port number.
-.El
-.Sh MEMORY CONTROL EXAMPLE
+.SH "MEMORY CONTROL EXAMPLE"
 In the example config settings below memory usage is reduced. Some service
 levels are lower, notable very large data and a high TCP load are no longer
 supported. Very large data and high TCP loads are exceptional for the DNS.
 DNSSEC validation is enabled, just add trust anchors.
 If you do not have to worry about programs using more than 1 meg of memory,
 the below example is not for you. Use the defaults to receive full service.
-.Pp
+.P
 .nf
 # example settings that reduce memory usage
 server:
-	num-threads: 1
-	outgoing-num-tcp: 1	# this limits TCP service, uses less buffers.
-	incoming-num-tcp: 1
-	outgoing-range: 1	# uses less memory, but less port randomness.
-	msg-buffer-size: 8192   # note this limits service, 'no huge stuff'.
-	msg-cache-size: 102400  # 100 Kb.
-	msg-cache-slabs: 1
-	rrset-cache-size: 102400  # 100 Kb.
-	rrset-cache-slabs: 1
-	infra-cache-numhosts: 200
-	infra-cache-numlame: 10
-	key-cache-size: 102400  # 100 Kb.
-	key-cache-slabs: 1
-	num-queries-per-thread: 30
-	target-fetch-policy: "2 1 0 0 0 0"
-	harden-large-queries: "yes"
-	harden-short-bufsize: "yes"
-	do-ip6: no	# save a bit of memory if not used.
+	num\-threads: 1
+	outgoing\-num\-tcp: 1	# this limits TCP service, uses less buffers.
+	incoming\-num\-tcp: 1
+	outgoing\-range: 1	# uses less memory, but less port randomness.
+	msg\-buffer\-size: 8192   # note this limits service, 'no huge stuff'.
+	msg\-cache\-size: 102400  # 100 Kb.
+	msg\-cache\-slabs: 1
+	rrset\-cache\-size: 102400  # 100 Kb.
+	rrset\-cache\-slabs: 1
+	infra\-cache\-numhosts: 200
+	infra\-cache\-numlame: 10
+	key\-cache\-size: 102400  # 100 Kb.
+	key\-cache\-slabs: 1
+	num\-queries\-per\-thread: 30
+	target\-fetch\-policy: "2 1 0 0 0 0"
+	harden\-large\-queries: "yes"
+	harden\-short\-bufsize: "yes"
+	do\-ip6: no	# save a bit of memory if not used.
 .fi
-.Sh FILES
-.Bl -tag -width indent
-.It Pa /etc/unbound
+.SH "FILES"
+.TP
+.I /etc/unbound
 default unbound working directory and default 
-.Xr chroot 2 
+\fIchroot\fR(2)
 location.
-.It Pa unbound.conf
+.TP
+.I unbound.conf
 unbound configuration file.
-.It Pa unbound.pid
+.TP
+.I unbound.pid
 default unbound pidfile with process ID of the running daemon.
-.It Pa unbound.log
+.TP
+.I unbound.log
 unbound log file. default is to log to 
-.Xr syslog 3 .
-.El
-.Sh SEE ALSO
-.Xr unbound 8 , 
-.Xr unbound-checkconf 8 .
-.Sh AUTHORS
-.Ic Unbound 
+\fIsyslog\fR(3). 
+.SH "SEE ALSO"
+\fIunbound\fR(8), 
+\fIunbound\-checkconf\fR(8).
+.SH "AUTHORS"
+.B Unbound 
 was written by NLnet Labs. Please see CREDITS file
 in the distribution for further details.

iterator/iter_donotq.c

@@ -103,68 +103,22 @@ donotq_insert(struct iter_donotq* dq, struct sockaddr_storage* addr,
 	node->net = net;
 	node->parent = NULL;
 	if(!rbtree_insert(dq->tree, &node->node)) {
-		verbose(VERB_DETAIL, "duplicate donotquery address ignored.");
+		verbose(VERB_QUERY, "duplicate donotquery address ignored.");
 	}
 	return 1;
 }
 
-/** make sure the netblock ends in zeroes for compare in tree */
-static void
-mask_block(int ip6, struct sockaddr_storage* addr, int net)
-{
-	uint8_t mask[8] = {0x0, 0x1, 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f};
-	int i, max;
-	uint8_t* s;
-	if(ip6) {
-		s = (uint8_t*)&((struct sockaddr_in6*)addr)->sin6_addr;
-		max = 128;
-	} else {
-		s = (uint8_t*)&((struct sockaddr_in*)addr)->sin_addr;
-		max = 32;
-	}
-	if(net >= max)
-		return;
-	for(i=net/8+1; i<max/8; i++) {
-		s[i] = 0;
-	}
-	s[net/8] &= mask[net&0x7];
-}
-
 /** apply donotq string */
 static int
 donotq_str_cfg(struct iter_donotq* dq, const char* str)
 {
 	struct sockaddr_storage addr;
 	int net;
-	char* s = NULL;
 	socklen_t addrlen;
-	net = (str_is_ip6(str)?128:32);
-	if((s=strchr(str, '/'))) {
-		if(atoi(s+1) > net) {
-			log_err("netblock too large: %s", str);
-			return 0;
-		}
-		net = atoi(s+1);
-		if(net == 0 && strcmp(s+1, "0") != 0) {
-			log_err("cannot parse donotquery netblock:"
-				" '%s'", str);
-			return 0;
-		}
-		if(!(s = strdup(str))) {
-			log_err("out of memory");
-			return 0;
-		}
-		*strchr(s, '/') = '\0';
-	}
-	if(!ipstrtoaddr(s?s:str, UNBOUND_DNS_PORT, &addr, &addrlen)) {
-		free(s);
-		log_err("cannot parse donotquery ip address: '%s'", str);
+	if(!netblockstrtoaddr(str, UNBOUND_DNS_PORT, &addr, &addrlen, &net)) {
+		log_err("cannot parse donotquery netblock: %s", str);
 		return 0;
 	}
-	if(s) {
-		free(s);
-		mask_block(str_is_ip6(str), &addr, net);
-	}
 	if(!donotq_insert(dq, &addr, addrlen, net)) {
 		log_err("out of memory");
 		return 0;
@@ -185,42 +139,6 @@ read_donotq(struct iter_donotq* dq, struct config_file* cfg)
 	return 1;
 }
 
-/** number of bits that two addrs share (are equal) */
-static int
-addr_in_common(struct sockaddr_storage* addr1, int net1, 
-	struct sockaddr_storage* addr2, int net2, socklen_t addrlen)
-{
-	int min = (net1<net2)?net1:net2;
-	int i, to;
-	int match = 0;
-	uint8_t* s1, *s2;
-	if(addr_is_ip6(addr1, addrlen)) {
-		s1 = (uint8_t*)&((struct sockaddr_in6*)addr1)->sin6_addr;
-		s2 = (uint8_t*)&((struct sockaddr_in6*)addr2)->sin6_addr;
-		to = 16;
-	} else {
-		s1 = (uint8_t*)&((struct sockaddr_in*)addr1)->sin_addr;
-		s2 = (uint8_t*)&((struct sockaddr_in*)addr2)->sin_addr;
-		to = 4;
-	}
-	/* match = bits_in_common(s1, s2, to); */
-	for(i=0; i<to; i++) {
-		if(s1[i] == s2[i]) {
-			match += 8;
-		} else {
-			uint8_t z = s1[i]^s2[i];
-			log_assert(z);
-			while(!(z&0x80)) {
-				match++;
-				z<<=1;
-			}
-			break;
-		}
-	}
-	if(match > min) match = min;
-	return match;
-}
-
 /** initialise parent pointers in the tree */
 static void
 donotq_init_parents(struct iter_donotq* donotq)

iterator/iter_donotq.h

@@ -54,7 +54,7 @@ struct iter_donotq {
 	/** regional for allocation */
 	struct regional* region;
 	/** 
-	 * Tree of the single addresses that are blocked.
+	 * Tree of the address spans that are blocked.
 	 * contents of type iter_donotq_addr.
 	 */
 	rbtree_t* tree;
@@ -62,10 +62,10 @@ struct iter_donotq {
 
 /**
  * Iterator donotquery address.
- * A single address that must not be used to send queries to.
+ * An address span that must not be used to send queries to.
  */
 struct iter_donotq_addr {
-	/** redblacktree node, key is this structure: addr and addrlen */
+	/** redblacktree node, key is this structure: addr and addrlen, net */
 	rbnode_t node;
 	/** address */
 	struct sockaddr_storage addr;

iterator/iter_fwd.c

@@ -228,8 +228,8 @@ read_forwards(struct iter_forwards* fwd, struct config_file* cfg)
 			return 0;
 		if(!forwards_insert(fwd, LDNS_RR_CLASS_IN, dp))
 			return 0;
-		verbose(VERB_DETAIL, "Forward zone server list:");
-		delegpt_log(VERB_DETAIL, dp);
+		verbose(VERB_QUERY, "Forward zone server list:");
+		delegpt_log(VERB_QUERY, dp);
 	}
 	return 1;
 }

iterator/iter_hints.c

@@ -285,7 +285,7 @@ read_stubs(struct iter_hints* hints, struct config_file* cfg)
 			return 0;
 		if(!hints_insert(hints, LDNS_RR_CLASS_IN, dp))
 			return 0;
-		delegpt_log(VERB_DETAIL, dp);
+		delegpt_log(VERB_QUERY, dp);
 	}
 	return 1;
 }
@@ -314,7 +314,7 @@ read_root_hints(struct iter_hints* hints, char* fname)
 		fclose(f);
 		return 0;
 	}
-	verbose(VERB_DETAIL, "Reading root hints from %s", fname);
+	verbose(VERB_QUERY, "Reading root hints from %s", fname);
 	while(!feof(f)) {
 		status = ldns_rr_new_frm_fp_l(&rr, f, 
 			&default_ttl, &origin, &prev_rr, &lineno);
@@ -391,7 +391,7 @@ read_root_hints(struct iter_hints* hints, char* fname)
 	if(!hints_insert(hints, c, dp)) {
 		return 0;
 	}
-	delegpt_log(VERB_DETAIL, dp);
+	delegpt_log(VERB_QUERY, dp);
 	return 1;
 }
 
@@ -403,7 +403,12 @@ read_root_hints_list(struct iter_hints* hints, struct config_file* cfg)
 	for(p = cfg->root_hints; p; p = p->next) {
 		log_assert(p->str);
 		if(p->str && p->str[0]) {
-			if(!read_root_hints(hints, p->str))
+			char* f = p->str;
+			if(cfg->chrootdir && cfg->chrootdir[0] &&
+				strncmp(p->str, cfg->chrootdir, 
+				strlen(cfg->chrootdir)) == 0)
+				f += strlen(cfg->chrootdir);
+			if(!read_root_hints(hints, f))
 				return 0;
 		}
 	}
@@ -434,7 +439,6 @@ hints_apply_cfg(struct iter_hints* hints, struct config_file* cfg)
 			return 0;
 		if(!hints_insert(hints, LDNS_RR_CLASS_IN, dp))
 			return 0;
-		delegpt_log(VERB_DETAIL, dp);
 	}
 
 	init_parents(hints);

iterator/iter_scrub.c

@@ -60,11 +60,11 @@ static void
 remove_rrset(const char* str, ldns_buffer* pkt, struct msg_parse* msg, 
 	struct rrset_parse* prev, struct rrset_parse** rrset)
 {
-	if(verbosity >= VERB_DETAIL 
+	if(verbosity >= VERB_QUERY 
 		&& (*rrset)->dname_len <= LDNS_MAX_DOMAINLEN) {
 		uint8_t buf[LDNS_MAX_DOMAINLEN+1];
 		dname_pkt_copy(pkt, buf, (*rrset)->dname);
-		log_nametypeclass(VERB_DETAIL, str, buf, 
+		log_nametypeclass(VERB_QUERY, str, buf, 
 			(*rrset)->type, ntohs((*rrset)->rrset_class));
 	}
 	if(prev)
@@ -350,6 +350,10 @@ scrub_normalize(ldns_buffer* pkt, struct msg_parse* msg,
 					"too long");
 				return 0;
 			}
+			/* internally we have CNAME'd/DNAME'd chains ending
+			 * in nxdomain with NOERROR rcode, change rcode
+			 * to reflect this (if needed) */
+			FLAGS_SET_RCODE(msg->flags, LDNS_RCODE_NOERROR);
 			if(nx && nx->type == LDNS_RR_TYPE_CNAME && 
 			   dname_pkt_compare(pkt, sname, nx->dname) == 0) {
 				/* check next cname */
@@ -392,6 +396,10 @@ scrub_normalize(ldns_buffer* pkt, struct msg_parse* msg,
 				return 0;
 			prev = rrset;
 			rrset = rrset->rrset_all_next;
+			/* internally we have CNAME'd/DNAME'd chains ending
+			 * in nxdomain with NOERROR rcode, change rcode
+			 * to reflect this (if needed) */
+			FLAGS_SET_RCODE(msg->flags, LDNS_RCODE_NOERROR);
 			continue;
 		}
 

iterator/iter_utils.c

@@ -102,7 +102,7 @@ iter_apply_cfg(struct iter_env* iter_env, struct config_file* cfg)
 	if(!read_fetch_policy(iter_env, cfg->target_fetch_policy))
 		return 0;
 	for(i=0; i<iter_env->max_dependency_depth+1; i++)
-		verbose(VERB_DETAIL, "target fetch policy for level %d is %d",
+		verbose(VERB_QUERY, "target fetch policy for level %d is %d",
 			i, iter_env->target_fetch_policy[i]);
 	
 	if(!iter_env->hints)
@@ -331,7 +331,7 @@ iter_mark_cycle_targets(struct module_qstate* qstate, struct delegpt* dp)
 			LDNS_RR_TYPE_AAAA, qstate->qinfo.qclass) ||
 		   causes_cycle(qstate, ns->name, ns->namelen, 
 			LDNS_RR_TYPE_A, qstate->qinfo.qclass)) {
-			log_nametypeclass(VERB_DETAIL, "skipping target due "
+			log_nametypeclass(VERB_QUERY, "skipping target due "
 			 	"to dependency cycle (harden-glue: no may "
 				"fix some of the cycles)", 
 				ns->name, LDNS_RR_TYPE_A, 

iterator/iterator.c

@@ -80,7 +80,7 @@ void
 iter_deinit(struct module_env* env, int id)
 {
 	struct iter_env* iter_env;
-	if(!env || !env->modinfo || !env->modinfo[id])
+	if(!env || !env->modinfo[id])
 		return;
 	iter_env = (struct iter_env*)env->modinfo[id];
 	free(iter_env->target_fetch_policy);
@@ -188,7 +188,8 @@ error_supers(struct module_qstate* qstate, int id, struct module_qstate* super)
 			/* not interested */
 			verbose(VERB_ALGO, "subq error, but not interested");
 			log_query_info(VERB_ALGO, "superq", &super->qinfo);
-			delegpt_log(VERB_ALGO, super_iq->dp);
+			if(super_iq->dp)
+				delegpt_log(VERB_ALGO, super_iq->dp);
 			log_assert(0);
 			return;
 		}
@@ -215,7 +216,7 @@ error_supers(struct module_qstate* qstate, int id, struct module_qstate* super)
 static int
 error_response(struct module_qstate* qstate, int id, int rcode)
 {
-	verbose(VERB_DETAIL, "return error response %s", 
+	verbose(VERB_QUERY, "return error response %s", 
 		ldns_lookup_by_id(ldns_rcodes, rcode)?
 		ldns_lookup_by_id(ldns_rcodes, rcode)->name:"??");
 	qstate->return_rcode = rcode;
@@ -224,6 +225,23 @@ error_response(struct module_qstate* qstate, int id, int rcode)
 	return 0;
 }
 
+/** check if prepend item is duplicate item */
+static int
+prepend_is_duplicate(struct ub_packed_rrset_key** sets, size_t to,
+	struct ub_packed_rrset_key* dup)
+{
+	size_t i;
+	for(i=0; i<to; i++) {
+		if(sets[i]->rk.type == dup->rk.type &&
+			sets[i]->rk.rrset_class == dup->rk.rrset_class &&
+			sets[i]->rk.dname_len == dup->rk.dname_len &&
+			query_dname_compare(sets[i]->rk.dname, dup->rk.dname)
+			== 0)
+			return 1;
+	}
+	return 0;
+}
+
 /** prepend the prepend list in the answer and authority section of dns_msg */
 static int
 iter_prepend(struct iter_qstate* iq, struct dns_msg* msg, 
@@ -253,6 +271,11 @@ iter_prepend(struct iter_qstate* iq, struct dns_msg* msg,
 	/* AUTH section */
 	num_ns = 0;
 	for(p = iq->ns_prepend_list; p; p = p->next) {
+		if(prepend_is_duplicate(sets+msg->rep->an_numrrsets+num_an,
+			num_ns, p->rrset) || prepend_is_duplicate(
+			msg->rep->rrsets+msg->rep->an_numrrsets, 
+			msg->rep->ns_numrrsets, p->rrset))
+			continue;
 		sets[msg->rep->an_numrrsets + num_an + num_ns++] = p->rrset;
 	}
 	memcpy(sets + num_an + msg->rep->an_numrrsets + num_ns, 
@@ -480,7 +503,7 @@ prime_root(struct module_qstate* qstate, struct iter_qstate* iq,
 {
 	struct delegpt* dp;
 	struct module_qstate* subq;
-	verbose(VERB_ALGO, "priming . NS %s", 
+	verbose(VERB_DETAIL, "priming . %s NS", 
 		ldns_lookup_by_id(ldns_rr_classes, (int)qclass)?
 		ldns_lookup_by_id(ldns_rr_classes, (int)qclass)->name:"??");
 	dp = hints_lookup_root(ie->hints, qclass);
@@ -639,7 +662,7 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
 	/* We enforce a maximum number of query restarts. This is primarily a
 	 * cheap way to prevent CNAME loops. */
 	if(iq->query_restart_count > MAX_RESTART_COUNT) {
-		verbose(VERB_DETAIL, "request has exceeded the maximum number"
+		verbose(VERB_QUERY, "request has exceeded the maximum number"
 			" of query restarts with %d", iq->query_restart_count);
 		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
@@ -650,7 +673,7 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
 	 * of work required to answer a given query. */
 	verbose(VERB_ALGO, "request has dependency depth of %d", iq->depth);
 	if(iq->depth > ie->max_dependency_depth) {
-		verbose(VERB_DETAIL, "request has exceeded the maximum "
+		verbose(VERB_QUERY, "request has exceeded the maximum "
 			"dependency depth with depth of %d", iq->depth);
 		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
@@ -769,7 +792,7 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
 		if(iter_dp_is_useless(qstate, iq->dp)) {
 			if(dname_is_root(iq->dp->name)) {
 				/* use safety belt */
-				verbose(VERB_OPS, "Priming problem: NS but "
+				verbose(VERB_QUERY, "Cache has root NS but "
 				"no addresses. Fallback to the safety belt.");
 				iq->dp = hints_lookup_root(ie->hints, 
 					iq->qchase.qclass);
@@ -838,7 +861,7 @@ static int
 processInitRequest2(struct module_qstate* qstate, struct iter_qstate* iq,
 	struct iter_env* ie, int id)
 {
-	log_query_info(VERB_DETAIL, "resolving (init part 2): ", 
+	log_query_info(VERB_QUERY, "resolving (init part 2): ", 
 		&qstate->qinfo);
 
 	/* Check to see if we need to prime a stub zone. */
@@ -865,7 +888,7 @@ processInitRequest2(struct module_qstate* qstate, struct iter_qstate* iq,
 static int
 processInitRequest3(struct module_qstate* qstate, struct iter_qstate* iq)
 {
-	log_query_info(VERB_DETAIL, "resolving (init part 3): ", 
+	log_query_info(VERB_QUERY, "resolving (init part 3): ", 
 		&qstate->qinfo);
 	/* If the RD flag wasn't set, then we just finish with the 
 	 * cached referral as the response. */
@@ -915,7 +938,7 @@ generate_target_query(struct module_qstate* qstate, struct iter_qstate* iq,
 			subiq->dp = delegpt_copy(iq->dp, subq->region);
 		}
 	}
-	log_nametypeclass(VERB_DETAIL, "new target", name, qtype, qclass);
+	log_nametypeclass(VERB_QUERY, "new target", name, qtype, qclass);
 	return 1;
 }
 
@@ -1029,7 +1052,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 	 * needs to send a query to. That is, at least one per referral, 
 	 * more if some targets timeout or return throwaway answers. */
 
-	log_query_info(VERB_DETAIL, "processQueryTargets:", &qstate->qinfo);
+	log_query_info(VERB_QUERY, "processQueryTargets:", &qstate->qinfo);
 	verbose(VERB_ALGO, "processQueryTargets: targetqueries %d, "
 		"currentqueries %d", iq->num_target_queries, 
 		iq->num_current_queries);
@@ -1038,7 +1061,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 	/* Make sure that we haven't run away */
 	/* FIXME: is this check even necessary? */
 	if(iq->referral_count > MAX_REFERRAL_COUNT) {
-		verbose(VERB_DETAIL, "request has exceeded the maximum "
+		verbose(VERB_QUERY, "request has exceeded the maximum "
 			"number of referrrals with %d", iq->referral_count);
 		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
@@ -1046,7 +1069,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 	/* Make sure we have a delegation point, otherwise priming failed
 	 * or another failure occurred */
 	if(!iq->dp) {
-		verbose(VERB_DETAIL, "Failed to get a delegation, giving up");
+		verbose(VERB_QUERY, "Failed to get a delegation, giving up");
 		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
 	delegpt_log(VERB_ALGO, iq->dp);
@@ -1114,7 +1137,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 			/* Since a target query might have been made, we 
 			 * need to check again. */
 			if(iq->num_target_queries == 0) {
-				verbose(VERB_DETAIL, "out of query targets -- "
+				verbose(VERB_QUERY, "out of query targets -- "
 					"returning SERVFAIL");
 				/* fail -- no more targets, no more hope 
 				 * of targets, no hope of a response. */
@@ -1141,8 +1164,8 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 	}
 
 	/* We have a valid target. */
-	log_query_info(VERB_DETAIL, "sending query:", &iq->qchase);
-	log_name_addr(VERB_DETAIL, "sending to target:", iq->dp->name, 
+	log_query_info(VERB_QUERY, "sending query:", &iq->qchase);
+	log_name_addr(VERB_QUERY, "sending to target:", iq->dp->name, 
 		&target->addr, target->addrlen);
 	log_assert(fptr_whitelist_modenv_send_query(qstate->env->send_query));
 	outq = (*qstate->env->send_query)(
@@ -1151,8 +1174,9 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 		iq->chase_flags, EDNS_DO|BIT_CD, 
 		&target->addr, target->addrlen, qstate);
 	if(!outq) {
-		log_err("error sending query to auth server; skip this address");
-		log_addr(0, "error for address:", 
+		verbose(VERB_OPS, "error sending query to auth server; "
+			"skip this address");
+		log_addr(VERB_OPS, "error for address:", 
 			&target->addr, target->addrlen);
 		return next_state(iq, QUERYTARGETS_STATE);
 	}
@@ -1505,7 +1529,7 @@ static int
 processFinished(struct module_qstate* qstate, struct iter_qstate* iq,
 	int id)
 {
-	log_query_info(VERB_DETAIL, "finishing processing for", 
+	log_query_info(VERB_QUERY, "finishing processing for", 
 		&qstate->qinfo);
 
 	if(!iq->response) {
@@ -1704,7 +1728,8 @@ process_response(struct module_qstate* qstate, struct iter_qstate* iq,
 	iq->response = dns_alloc_msg(pkt, prs, qstate->region);
 	if(!iq->response)
 		goto handle_it;
-	log_name_addr(VERB_DETAIL, "incoming packet from target:", iq->dp->name, 
+	log_query_info(VERB_DETAIL, "reponse for", &qstate->qinfo);
+	log_name_addr(VERB_DETAIL, "reply from", iq->dp->name, 
 		&qstate->reply->addr, qstate->reply->addrlen);
 	if(verbosity >= VERB_ALGO)
 		log_dns_msg("incoming scrubbed packet:", &iq->response->qinfo, 
@@ -1721,12 +1746,12 @@ iter_operate(struct module_qstate* qstate, enum module_ev event, int id,
 {
 	struct iter_env* ie = (struct iter_env*)qstate->env->modinfo[id];
 	struct iter_qstate* iq = (struct iter_qstate*)qstate->minfo[id];
-	verbose(VERB_DETAIL, "iterator[module %d] operate: extstate:%s event:%s", 
+	verbose(VERB_QUERY, "iterator[module %d] operate: extstate:%s event:%s", 
 		id, strextstate(qstate->ext_state[id]), strmodulevent(event));
-	if(iq) log_query_info(VERB_DETAIL, "iterator operate: query", 
+	if(iq) log_query_info(VERB_QUERY, "iterator operate: query", 
 		&qstate->qinfo);
 	if(iq && qstate->qinfo.qname != iq->qchase.qname)
-		log_query_info(VERB_DETAIL, "iterator operate: chased to", 
+		log_query_info(VERB_QUERY, "iterator operate: chased to", 
 			&iq->qchase);
 
 	/* perform iterator state machine */
@@ -1740,11 +1765,11 @@ iter_operate(struct module_qstate* qstate, enum module_ev event, int id,
 		process_request(qstate, iq, ie, id);
 		return;
 	}
-	if(event == module_event_pass) {
+	if(iq && event == module_event_pass) {
 		iter_handle(qstate, iq, ie, id);
 		return;
 	}
-	if(outbound) {
+	if(iq && outbound) {
 		process_response(qstate, iq, ie, id, outbound, event);
 		return;
 	}

libunbound/context.c

@@ -0,0 +1,378 @@
+/*
+ * libunbound/context.c - validating context for unbound internal use
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains the validator context structure.
+ */
+#include "config.h"
+#include "libunbound/context.h"
+#include "util/module.h"
+#include "util/config_file.h"
+#include "util/net_help.h"
+#include "services/modstack.h"
+#include "services/localzone.h"
+#include "services/cache/rrset.h"
+#include "services/cache/infra.h"
+#include "util/data/msgreply.h"
+#include "util/storage/slabhash.h"
+
+int 
+context_finalize(struct ub_ctx* ctx)
+{
+	struct config_file* cfg = ctx->env->cfg;
+	verbosity = cfg->verbosity;
+	if(ctx->logfile_override)
+		log_file(ctx->log_out);
+	else	log_init(cfg->logfile, cfg->use_syslog, NULL);
+	config_apply(cfg);
+	if(!modstack_setup(&ctx->mods, cfg->module_conf, ctx->env))
+		return UB_INITFAIL;
+	ctx->local_zones = local_zones_create();
+	if(!ctx->local_zones)
+		return UB_NOMEM;
+	if(!local_zones_apply_cfg(ctx->local_zones, cfg))
+		return UB_INITFAIL;
+	if(!ctx->env->msg_cache ||
+	   cfg->msg_cache_size != slabhash_get_size(ctx->env->msg_cache) || 
+	   cfg->msg_cache_slabs != ctx->env->msg_cache->size) {
+		slabhash_delete(ctx->env->msg_cache);
+		ctx->env->msg_cache = slabhash_create(cfg->msg_cache_slabs,
+			HASH_DEFAULT_STARTARRAY, cfg->msg_cache_size,
+			msgreply_sizefunc, query_info_compare,
+			query_entry_delete, reply_info_delete, NULL);
+		if(!ctx->env->msg_cache)
+			return UB_NOMEM;
+	}
+	ctx->env->rrset_cache = rrset_cache_adjust(ctx->env->rrset_cache,
+		ctx->env->cfg, ctx->env->alloc);
+	if(!ctx->env->rrset_cache)
+		return UB_NOMEM;
+	ctx->env->infra_cache = infra_adjust(ctx->env->infra_cache, cfg);
+	if(!ctx->env->infra_cache)
+		return UB_NOMEM;
+	ctx->finalized = 1;
+	return UB_NOERROR;
+}
+
+int context_query_cmp(const void* a, const void* b)
+{
+	if( *(int*)a < *(int*)b )
+		return -1;
+	if( *(int*)a > *(int*)b )
+		return 1;
+	return 0;
+}
+
+void
+context_query_delete(struct ctx_query* q) 
+{
+	if(!q) return;
+	ub_resolve_free(q->res);
+	free(q->msg);
+	free(q);
+}
+
+/** How many times to try to find an unused query-id-number for async */
+#define NUM_ID_TRIES 100000
+/** find next useful id number of 0 on error */
+static int
+find_id(struct ub_ctx* ctx, int* id)
+{
+	size_t tries = 0;
+	ctx->next_querynum++;
+	while(rbtree_search(&ctx->queries, &ctx->next_querynum)) {
+		ctx->next_querynum++; /* numerical wraparound is fine */
+		if(tries++ > NUM_ID_TRIES)
+			return 0;
+	}
+	*id = ctx->next_querynum;
+	return 1;
+}
+
+struct ctx_query* 
+context_new(struct ub_ctx* ctx, char* name, int rrtype, int rrclass, 
+	ub_callback_t cb, void* cbarg)
+{
+	struct ctx_query* q = (struct ctx_query*)calloc(1, sizeof(*q));
+	if(!q) return NULL;
+	lock_basic_lock(&ctx->cfglock);
+	if(!find_id(ctx, &q->querynum)) {
+		lock_basic_unlock(&ctx->cfglock);
+		free(q);
+		return NULL;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	q->node.key = &q->querynum;
+	q->async = (cb != NULL);
+	q->cb = cb;
+	q->cb_arg = cbarg;
+	q->res = (struct ub_result*)calloc(1, sizeof(*q->res));
+	if(!q->res) {
+		free(q);
+		return NULL;
+	}
+	q->res->qname = strdup(name);
+	if(!q->res->qname) {
+		free(q->res);
+		free(q);
+		return NULL;
+	}
+	q->res->qtype = rrtype;
+	q->res->qclass = rrclass;
+
+	/* add to query list */
+	lock_basic_lock(&ctx->cfglock);
+	if(q->async)
+		ctx->num_async ++;
+	(void)rbtree_insert(&ctx->queries, &q->node);
+	lock_basic_unlock(&ctx->cfglock);
+	return q;
+}
+
+struct alloc_cache* 
+context_obtain_alloc(struct ub_ctx* ctx, int locking)
+{
+	struct alloc_cache* a;
+	int tnum = 0;
+	if(locking) {
+		lock_basic_lock(&ctx->cfglock);
+	}
+	a = ctx->alloc_list;
+	if(a)
+		ctx->alloc_list = a->super; /* snip off list */
+	else	tnum = ctx->thr_next_num++;
+	if(locking) {
+		lock_basic_unlock(&ctx->cfglock);
+	}
+	if(a) {
+		a->super = &ctx->superalloc;
+		return a;
+	}
+	a = (struct alloc_cache*)calloc(1, sizeof(*a));
+	if(!a)
+		return NULL;
+	alloc_init(a, &ctx->superalloc, tnum);
+	return a;
+}
+
+void 
+context_release_alloc(struct ub_ctx* ctx, struct alloc_cache* alloc,
+	int locking)
+{
+	if(!ctx || !alloc)
+		return;
+	if(locking) {
+		lock_basic_lock(&ctx->cfglock);
+	}
+	alloc->super = ctx->alloc_list;
+	ctx->alloc_list = alloc;
+	if(locking) {
+		lock_basic_unlock(&ctx->cfglock);
+	}
+}
+
+uint8_t* 
+context_serialize_new_query(struct ctx_query* q, uint32_t* len)
+{
+	/* format for new query is
+	 * 	o uint32 cmd
+	 * 	o uint32 id
+	 * 	o uint32 type
+	 * 	o uint32 class
+	 * 	o rest queryname (string)
+	 */
+	uint8_t* p;
+	size_t slen = strlen(q->res->qname) + 1/*end of string*/;
+	*len = sizeof(uint32_t)*4 + slen;
+	p = (uint8_t*)malloc(*len);
+	if(!p) return NULL;
+	ldns_write_uint32(p, UB_LIBCMD_NEWQUERY);
+	ldns_write_uint32(p+sizeof(uint32_t), (uint32_t)q->querynum);
+	ldns_write_uint32(p+2*sizeof(uint32_t), (uint32_t)q->res->qtype);
+	ldns_write_uint32(p+3*sizeof(uint32_t), (uint32_t)q->res->qclass);
+	memmove(p+4*sizeof(uint32_t), q->res->qname, slen);
+	return p;
+}
+
+struct ctx_query* 
+context_deserialize_new_query(struct ub_ctx* ctx, uint8_t* p, uint32_t len)
+{
+	struct ctx_query* q = (struct ctx_query*)calloc(1, sizeof(*q));
+	if(!q) return NULL;
+	if(len < 4*sizeof(uint32_t)+1) {
+		free(q);
+		return NULL;
+	}
+	log_assert( ldns_read_uint32(p) == UB_LIBCMD_NEWQUERY);
+	q->querynum = (int)ldns_read_uint32(p+sizeof(uint32_t));
+	q->node.key = &q->querynum;
+	q->async = 1;
+	q->res = (struct ub_result*)calloc(1, sizeof(*q->res));
+	if(!q->res) {
+		free(q);
+		return NULL;
+	}
+	q->res->qtype = (int)ldns_read_uint32(p+2*sizeof(uint32_t));
+	q->res->qclass = (int)ldns_read_uint32(p+3*sizeof(uint32_t));
+	q->res->qname = strdup((char*)(p+4*sizeof(uint32_t)));
+	if(!q->res->qname) {
+		free(q->res);
+		free(q);
+		return NULL;
+	}
+
+	/** add to query list */
+	ctx->num_async++;
+	(void)rbtree_insert(&ctx->queries, &q->node);
+	return q;
+}
+
+struct ctx_query* 
+context_lookup_new_query(struct ub_ctx* ctx, uint8_t* p, uint32_t len)
+{
+	struct ctx_query* q;
+	int querynum;
+	if(len < 4*sizeof(uint32_t)+1) {
+		return NULL;
+	}
+	log_assert( ldns_read_uint32(p) == UB_LIBCMD_NEWQUERY);
+	querynum = (int)ldns_read_uint32(p+sizeof(uint32_t));
+	q = (struct ctx_query*)rbtree_search(&ctx->queries, &querynum);
+	if(!q) {
+		return NULL;
+	}
+	log_assert(q->async);
+	return q;
+}
+
+uint8_t* 
+context_serialize_answer(struct ctx_query* q, int err, ldns_buffer* pkt,
+	uint32_t* len)
+{
+	/* answer format
+	 * 	o uint32 cmd
+	 * 	o uint32 id
+	 * 	o uint32 error_code
+	 * 	o uint32 msg_security
+	 * 	o the remainder is the answer msg from resolver lookup.
+	 * 	  remainder can be length 0.
+	 */
+	size_t pkt_len = pkt?ldns_buffer_remaining(pkt):0;
+	uint8_t* p;
+	*len = sizeof(uint32_t)*4 + pkt_len;
+	p = (uint8_t*)malloc(*len);
+	if(!p) return NULL;
+	ldns_write_uint32(p, UB_LIBCMD_ANSWER);
+	ldns_write_uint32(p+sizeof(uint32_t), (uint32_t)q->querynum);
+	ldns_write_uint32(p+2*sizeof(uint32_t), (uint32_t)err);
+	ldns_write_uint32(p+3*sizeof(uint32_t), (uint32_t)q->msg_security);
+	if(pkt_len > 0)
+		memmove(p+4*sizeof(uint32_t), ldns_buffer_begin(pkt), pkt_len);
+	return p;
+}
+
+struct ctx_query* 
+context_deserialize_answer(struct ub_ctx* ctx,
+        uint8_t* p, uint32_t len, int* err)
+{
+	struct ctx_query* q = NULL ;
+	int id;
+	if(len < 4*sizeof(uint32_t)) return NULL;
+	log_assert( ldns_read_uint32(p) == UB_LIBCMD_ANSWER);
+	id = (int)ldns_read_uint32(p+sizeof(uint32_t));
+	q = (struct ctx_query*)rbtree_search(&ctx->queries, &id);
+	if(!q) return NULL; 
+	*err = (int)ldns_read_uint32(p+2*sizeof(uint32_t));
+	q->msg_security = ldns_read_uint32(p+3*sizeof(uint32_t));
+	if(len > 4*sizeof(uint32_t)) {
+		q->msg_len = len - 4*sizeof(uint32_t);
+		q->msg = (uint8_t*)memdup(p+4*sizeof(uint32_t), q->msg_len);
+		if(!q->msg) {
+			/* pass malloc failure to the user callback */
+			q->msg_len = 0;
+			*err = UB_NOMEM;
+			return q;
+		}
+	} 
+	return q;
+}
+
+uint8_t* 
+context_serialize_cancel(struct ctx_query* q, uint32_t* len)
+{
+	/* format of cancel:
+	 * 	o uint32 cmd
+	 * 	o uint32 async-id */
+	uint8_t* p = (uint8_t*)malloc(2*sizeof(uint32_t));
+	if(!p) return NULL;
+	*len = 2*sizeof(uint32_t);
+	ldns_write_uint32(p, UB_LIBCMD_CANCEL);
+	ldns_write_uint32(p+sizeof(uint32_t), (uint32_t)q->querynum);
+	return p;
+}
+
+struct ctx_query* context_deserialize_cancel(struct ub_ctx* ctx,
+        uint8_t* p, uint32_t len)
+{
+	struct ctx_query* q;
+	int id;
+	if(len != 2*sizeof(uint32_t)) return NULL;
+	log_assert( ldns_read_uint32(p) == UB_LIBCMD_CANCEL);
+	id = (int)ldns_read_uint32(p+sizeof(uint32_t));
+	q = (struct ctx_query*)rbtree_search(&ctx->queries, &id);
+	return q;
+}
+
+uint8_t* 
+context_serialize_quit(uint32_t* len)
+{
+	uint8_t* p = (uint8_t*)malloc(sizeof(uint32_t));
+	if(!p)
+		return NULL;
+	*len = sizeof(uint32_t);
+	ldns_write_uint32(p, UB_LIBCMD_QUIT);
+	return p;
+}
+
+enum ub_ctx_cmd context_serial_getcmd(uint8_t* p, uint32_t len)
+{
+	uint32_t v;
+	if((size_t)len < sizeof(v))
+		return UB_LIBCMD_QUIT;
+	v = ldns_read_uint32(p);
+	return v;
+}

libunbound/context.h

@@ -0,0 +1,342 @@
+/*
+ * libunbound/context.h - validating context for unbound internal use
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains the validator context structure.
+ */
+#ifndef LIBUNBOUND_CONTEXT_H
+#define LIBUNBOUND_CONTEXT_H
+#include "util/locks.h"
+#include "util/alloc.h"
+#include "util/rbtree.h"
+#include "services/modstack.h"
+#include "libunbound/unbound.h"
+#include "util/data/packed_rrset.h"
+struct libworker;
+
+/**
+ * The context structure
+ *
+ * Contains two pipes for async service
+ *	qq : write queries to the async service pid/tid.
+ *	rr : read results from the async service pid/tid.
+ */
+struct ub_ctx {
+	/* --- pipes --- */
+	/** mutex on query write pipe */
+	lock_basic_t qqpipe_lock;
+	/** the query write pipe, [0] read from, [1] write on */
+	int qqpipe[2];
+	/** mutex on result read pipe */
+	lock_basic_t rrpipe_lock;
+	/** the result read pipe, [0] read from, [1] write on */
+	int rrpipe[2];
+
+	/* --- shared data --- */
+	/** mutex for access to env.cfg, finalized and dothread */
+	lock_basic_t cfglock;
+	/** 
+	 * The context has been finalized 
+	 * This is after config when the first resolve is done.
+	 * The modules are inited (module-init()) and shared caches created.
+	 */
+	int finalized;
+
+	/** is bg worker created yet ? */
+	int created_bg;
+	/** pid of bg worker process */
+	pid_t bg_pid;
+	/** tid of bg worker thread */
+	ub_thread_t bg_tid;
+
+	/** do threading (instead of forking) for async resolution */
+	int dothread;
+	/** next thread number for new threads */
+	int thr_next_num;
+	/** if logfile is overriden */
+	int logfile_override;
+	/** what logfile to use instead */
+	FILE* log_out;
+	/** 
+	 * List of alloc-cache-id points per threadnum for notinuse threads.
+	 * Simply the entire struct alloc_cache with the 'super' member used
+	 * to link a simply linked list. Reset super member to the superalloc
+	 * before use.
+	 */
+	struct alloc_cache* alloc_list;
+
+	/** shared caches, and so on */
+	struct alloc_cache superalloc;
+	/** module env master value */
+	struct module_env* env;
+	/** module stack */
+	struct module_stack mods;
+	/** local authority zones */
+	struct local_zones* local_zones;
+	/** random state used to seed new random state structures */
+	struct ub_randstate* seed_rnd;
+
+	/** next query number (to try) to use */
+	int next_querynum;
+	/** number of async queries outstanding */
+	size_t num_async;
+	/** 
+	 * Tree of outstanding queries. Indexed by querynum 
+	 * Used when results come in for async to lookup.
+	 * Used when cancel is done for lookup (and delete).
+	 * Used to see if querynum is free for use.
+	 * Content of type ctx_query.
+	 */ 
+	rbtree_t queries;
+};
+
+/**
+ * The queries outstanding for the libunbound resolver.
+ * These are outstanding for async resolution.
+ * But also, outstanding for sync resolution by one of the threads that
+ * has joined the threadpool.
+ */
+struct ctx_query {
+	/** node in rbtree, must be first entry, key is ptr to the querynum */
+	struct rbnode_t node;
+	/** query id number, key for node */
+	int querynum;
+	/** was this an async query? */
+	int async;
+	/** was this query cancelled (for bg worker) */
+	int cancelled;
+
+	/** for async query, the callback function */
+	ub_callback_t cb;
+	/** for async query, the callback user arg */
+	void* cb_arg;
+
+	/** answer message, result from resolver lookup. */
+	uint8_t* msg;
+	/** resulting message length. */
+	size_t msg_len;
+	/** validation status on security */
+	enum sec_status msg_security;
+	/** store libworker that is handling this query */
+	struct libworker* w;
+
+	/** result structure, also contains original query, type, class.
+	 * malloced ptr ready to hand to the client. */
+	struct ub_result* res;
+};
+
+/**
+ * The error constants
+ */
+enum ub_ctx_err {
+	/** no error */
+	UB_NOERROR = 0,
+	/** socket operation. Set to -1, so that if an error from _fd() is
+	 * passed (-1) it gives a socket error. */
+	UB_SOCKET = -1,
+	/** alloc failure */
+	UB_NOMEM = -2,
+	/** syntax error */
+	UB_SYNTAX = -3,
+	/** DNS service failed */
+	UB_SERVFAIL = -4,
+	/** fork() failed */
+	UB_FORKFAIL = -5,
+	/** cfg change after finalize() */
+	UB_AFTERFINAL = -6,
+	/** initialization failed (bad settings) */
+	UB_INITFAIL = -7,
+	/** error in pipe communication with async bg worker */
+	UB_PIPE = -8,
+	/** error reading from file (resolv.conf) */
+	UB_READFILE = -9
+};
+
+/**
+ * Command codes for libunbound pipe.
+ *
+ * Serialization looks like this:
+ * 	o length (of remainder) uint32.
+ * 	o uint32 command code.
+ * 	o per command format.
+ */
+enum ub_ctx_cmd {
+	/** QUIT */
+	UB_LIBCMD_QUIT = 0,
+	/** New query, sent to bg worker */
+	UB_LIBCMD_NEWQUERY,
+	/** Cancel query, sent to bg worker */
+	UB_LIBCMD_CANCEL,
+	/** Query result, originates from bg worker */
+	UB_LIBCMD_ANSWER
+};
+
+/** 
+ * finalize a context.
+ * @param ctx: context to finalize. creates shared data.
+ * @return 0 if OK, or errcode.
+ */
+int context_finalize(struct ub_ctx* ctx);
+
+/** compare two ctx_query elements */
+int context_query_cmp(const void* a, const void* b);
+
+/** 
+ * delete context query
+ * @param q: query to delete, including message packet and prealloc result
+ */
+void context_query_delete(struct ctx_query* q);
+
+/**
+ * Create new query in context, add to querynum list.
+ * @param ctx: context
+ * @param name: query name
+ * @param rrtype: type
+ * @param rrclass: class
+ * @param cb: callback for async, or NULL for sync.
+ * @param cbarg: user arg for async queries.
+ * @return new ctx_query or NULL for malloc failure.
+ */
+struct ctx_query* context_new(struct ub_ctx* ctx, char* name, int rrtype,
+        int rrclass, ub_callback_t cb, void* cbarg);
+
+/**
+ * Get a new alloc. Creates a new one or uses a cached one.
+ * @param ctx: context
+ * @param locking: if true, cfglock is locked while getting alloc.
+ * @return an alloc, or NULL on mem error.
+ */
+struct alloc_cache* context_obtain_alloc(struct ub_ctx* ctx, int locking);
+
+/**
+ * Release an alloc. Puts it into the cache.
+ * @param ctx: context
+ * @param locking: if true, cfglock is locked while releasing alloc.
+ * @param alloc: alloc to relinquish.
+ */
+void context_release_alloc(struct ub_ctx* ctx, struct alloc_cache* alloc,
+	int locking);
+
+/**
+ * Serialize a context query that questions data.
+ * This serializes the query name, type, ...
+ * As well as command code 'new_query'.
+ * @param q: context query
+ * @param len: the length of the allocation is returned.
+ * @return: an alloc, or NULL on mem error.
+ */
+uint8_t* context_serialize_new_query(struct ctx_query* q, uint32_t* len);
+
+/**
+ * Serialize a context_query result to hand back to user.
+ * This serializes the query name, type, ..., and result.
+ * As well as command code 'answer'.
+ * @param q: context query
+ * @param err: error code to pass to client.
+ * @param pkt: the packet to add, can be NULL.
+ * @param len: the length of the allocation is returned.
+ * @return: an alloc, or NULL on mem error.
+ */
+uint8_t* context_serialize_answer(struct ctx_query* q, int err, 
+	ldns_buffer* pkt, uint32_t* len);
+
+/**
+ * Serialize a query cancellation. Serializes query async id
+ * as well as command code 'cancel'
+ * @param q: context query
+ * @param len: the length of the allocation is returned.
+ * @return: an alloc, or NULL on mem error.
+ */
+uint8_t* context_serialize_cancel(struct ctx_query* q, uint32_t* len);
+
+/**
+ * Serialize a 'quit' command.
+ * @param len: the length of the allocation is returned.
+ * @return: an alloc, or NULL on mem error.
+ */
+uint8_t* context_serialize_quit(uint32_t* len);
+
+/**
+ * Obtain command code from serialized buffer
+ * @param p: buffer serialized.
+ * @param len: length of buffer.
+ * @return command code or QUIT on error.
+ */
+enum ub_ctx_cmd context_serial_getcmd(uint8_t* p, uint32_t len);
+
+/**
+ * Lookup query from new_query buffer.
+ * @param ctx: context
+ * @param p: buffer serialized.
+ * @param len: length of buffer.
+ * @return looked up ctx_query or NULL for malloc failure.
+ */
+struct ctx_query* context_lookup_new_query(struct ub_ctx* ctx, 
+	uint8_t* p, uint32_t len);
+
+/**
+ * Deserialize a new_query buffer.
+ * @param ctx: context
+ * @param p: buffer serialized.
+ * @param len: length of buffer.
+ * @return new ctx_query or NULL for malloc failure.
+ */
+struct ctx_query* context_deserialize_new_query(struct ub_ctx* ctx, 
+	uint8_t* p, uint32_t len);
+
+/**
+ * Deserialize an answer buffer.
+ * @param ctx: context
+ * @param p: buffer serialized.
+ * @param len: length of buffer.
+ * @param err: error code to be returned to client is passed.
+ * @return ctx_query with answer added or NULL for malloc failure.
+ */
+struct ctx_query* context_deserialize_answer(struct ub_ctx* ctx, 
+	uint8_t* p, uint32_t len, int* err);
+
+/**
+ * Deserialize a cancel buffer.
+ * @param ctx: context
+ * @param p: buffer serialized.
+ * @param len: length of buffer.
+ * @return ctx_query to cancel or NULL for failure.
+ */
+struct ctx_query* context_deserialize_cancel(struct ub_ctx* ctx, 
+	uint8_t* p, uint32_t len);
+
+#endif /* LIBUNBOUND_CONTEXT_H */

libunbound/libunbound.c

@@ -0,0 +1,923 @@
+/*
+ * unbound.c - unbound validating resolver public API implementation
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to resolve DNS queries and 
+ * validate the answers. Synchonously and asynchronously.
+ *
+ */
+
+/* include the public api first, it should be able to stand alone */
+#include "libunbound/unbound.h"
+#include "config.h"
+#include "libunbound/context.h"
+#include "libunbound/libworker.h"
+#include "util/locks.h"
+#include "util/config_file.h"
+#include "util/alloc.h"
+#include "util/module.h"
+#include "util/regional.h"
+#include "util/log.h"
+#include "util/random.h"
+#include "util/net_help.h"
+#include "services/modstack.h"
+#include "services/localzone.h"
+#include "services/cache/infra.h"
+#include "services/cache/rrset.h"
+
+struct ub_ctx* 
+ub_ctx_create()
+{
+	struct ub_ctx* ctx;
+	unsigned int seed;
+	log_init(NULL, 0, NULL); /* logs to stderr */
+	log_ident_set("libunbound");
+	verbosity = 0; /* errors only */
+	checklock_start();
+	ctx = (struct ub_ctx*)calloc(1, sizeof(*ctx));
+	if(!ctx) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	alloc_init(&ctx->superalloc, NULL, 0);
+	seed = (unsigned int)time(NULL) ^ (unsigned int)getpid();
+	if(!(ctx->seed_rnd = ub_initstate(seed, NULL))) {
+		seed = 0;
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		errno = ENOMEM;
+		return NULL;
+	}
+	seed = 0;
+	if(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx->qqpipe) == -1) {
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		return NULL;
+	}
+	if(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx->rrpipe) == -1) {
+		int e = errno;
+		close(ctx->qqpipe[0]);
+		close(ctx->qqpipe[1]);
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		errno = e;
+		return NULL;
+	}
+	if(!fd_set_nonblock(ctx->rrpipe[0]) ||
+	   !fd_set_nonblock(ctx->rrpipe[1]) ||
+	   !fd_set_nonblock(ctx->qqpipe[0]) ||
+	   !fd_set_nonblock(ctx->qqpipe[1])) {
+		int e = errno;
+		close(ctx->rrpipe[0]);
+		close(ctx->rrpipe[1]);
+		close(ctx->qqpipe[0]);
+		close(ctx->qqpipe[1]);
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		errno = e;
+		return NULL;
+	}
+	lock_basic_init(&ctx->qqpipe_lock);
+	lock_basic_init(&ctx->rrpipe_lock);
+	lock_basic_init(&ctx->cfglock);
+	ctx->env = (struct module_env*)calloc(1, sizeof(*ctx->env));
+	if(!ctx->env) {
+		close(ctx->rrpipe[0]);
+		close(ctx->rrpipe[1]);
+		close(ctx->qqpipe[0]);
+		close(ctx->qqpipe[1]);
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		errno = ENOMEM;
+		return NULL;
+	}
+	ctx->env->cfg = config_create_forlib();
+	if(!ctx->env->cfg) {
+		close(ctx->rrpipe[0]);
+		close(ctx->rrpipe[1]);
+		close(ctx->qqpipe[0]);
+		close(ctx->qqpipe[1]);
+		free(ctx->env);
+		ub_randfree(ctx->seed_rnd);
+		free(ctx);
+		errno = ENOMEM;
+		return NULL;
+	}
+	ctx->env->alloc = &ctx->superalloc;
+	ctx->env->worker = NULL;
+	ctx->env->need_to_validate = 0;
+	modstack_init(&ctx->mods);
+	rbtree_init(&ctx->queries, &context_query_cmp);
+	return ctx;
+}
+
+/** delete q */
+static void
+delq(rbnode_t* n, void* ATTR_UNUSED(arg))
+{
+	struct ctx_query* q = (struct ctx_query*)n;
+	context_query_delete(q);
+}
+
+void 
+ub_ctx_delete(struct ub_ctx* ctx)
+{
+	struct alloc_cache* a, *na;
+	if(!ctx) return;
+	/* stop the bg thread */
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->created_bg) {
+		uint8_t* msg;
+		uint32_t len;
+		uint32_t cmd = UB_LIBCMD_QUIT;
+		lock_basic_unlock(&ctx->cfglock);
+		lock_basic_lock(&ctx->qqpipe_lock);
+		(void)libworker_write_msg(ctx->qqpipe[1], (uint8_t*)&cmd, 
+			(uint32_t)sizeof(cmd), 0);
+		lock_basic_unlock(&ctx->qqpipe_lock);
+		lock_basic_lock(&ctx->rrpipe_lock);
+		while(libworker_read_msg(ctx->rrpipe[0], &msg, &len, 0)) {
+			/* discard all results except a quit confirm */
+			if(context_serial_getcmd(msg, len) == UB_LIBCMD_QUIT) {
+				free(msg);
+				break;
+			}
+			free(msg);
+		}
+		lock_basic_unlock(&ctx->rrpipe_lock);
+
+		/* if bg worker is a thread, wait for it to exit, so that all
+	 	 * resources are really gone. */
+		lock_basic_lock(&ctx->cfglock);
+		if(ctx->dothread) {
+			lock_basic_unlock(&ctx->cfglock);
+			ub_thread_join(ctx->bg_tid);
+		} else {
+			lock_basic_unlock(&ctx->cfglock);
+		}
+	}
+	else {
+		lock_basic_unlock(&ctx->cfglock);
+	}
+
+
+	modstack_desetup(&ctx->mods, ctx->env);
+	a = ctx->alloc_list;
+	while(a) {
+		na = a->super;
+		a->super = &ctx->superalloc;
+		alloc_clear(a);
+		free(a);
+		a = na;
+	}
+	local_zones_delete(ctx->local_zones);
+	lock_basic_destroy(&ctx->qqpipe_lock);
+	lock_basic_destroy(&ctx->rrpipe_lock);
+	lock_basic_destroy(&ctx->cfglock);
+	if(ctx->qqpipe[0] != -1)
+		close(ctx->qqpipe[0]);
+	if(ctx->qqpipe[1] != -1)
+		close(ctx->qqpipe[1]);
+	if(ctx->rrpipe[0] != -1)
+		close(ctx->rrpipe[0]);
+	if(ctx->rrpipe[1] != -1)
+		close(ctx->rrpipe[1]);
+	ctx->qqpipe[0] = -1;
+	ctx->qqpipe[1] = -1;
+	ctx->rrpipe[0] = -1;
+	ctx->rrpipe[1] = -1;
+	if(ctx->env) {
+		slabhash_delete(ctx->env->msg_cache);
+		rrset_cache_delete(ctx->env->rrset_cache);
+		infra_delete(ctx->env->infra_cache);
+		config_delete(ctx->env->cfg);
+		free(ctx->env);
+	}
+	ub_randfree(ctx->seed_rnd);
+	alloc_clear(&ctx->superalloc);
+	traverse_postorder(&ctx->queries, delq, NULL);
+	free(ctx);
+}
+
+int 
+ub_ctx_set_option(struct ub_ctx* ctx, char* opt, char* val)
+{
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	if(!config_set_option(ctx->env->cfg, opt, val)) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_SYNTAX;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_config(struct ub_ctx* ctx, char* fname)
+{
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	if(!config_read(ctx->env->cfg, fname)) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_SYNTAX;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_add_ta(struct ub_ctx* ctx, char* ta)
+{
+	char* dup = strdup(ta);
+	if(!dup) return UB_NOMEM;
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	if(!cfg_strlist_insert(&ctx->env->cfg->trust_anchor_list, dup)) {
+		lock_basic_unlock(&ctx->cfglock);
+		free(dup);
+		return UB_NOMEM;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_add_ta_file(struct ub_ctx* ctx, char* fname)
+{
+	char* dup = strdup(fname);
+	if(!dup) return UB_NOMEM;
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	if(!cfg_strlist_insert(&ctx->env->cfg->trust_anchor_file_list, dup)) {
+		lock_basic_unlock(&ctx->cfglock);
+		free(dup);
+		return UB_NOMEM;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_trustedkeys(struct ub_ctx* ctx, char* fname)
+{
+	char* dup = strdup(fname);
+	if(!dup) return UB_NOMEM;
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	if(!cfg_strlist_insert(&ctx->env->cfg->trusted_keys_file_list, dup)) {
+		lock_basic_unlock(&ctx->cfglock);
+		free(dup);
+		return UB_NOMEM;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int
+ub_ctx_debuglevel(struct ub_ctx* ctx, int d)
+{
+	lock_basic_lock(&ctx->cfglock);
+	verbosity = d;
+	ctx->env->cfg->verbosity = d;
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int ub_ctx_debugout(struct ub_ctx* ctx, void* out)
+{
+	lock_basic_lock(&ctx->cfglock);
+	log_file((FILE*)out);
+	ctx->logfile_override = 1;
+	ctx->log_out = out;
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_async(struct ub_ctx* ctx, int dothread)
+{
+#if !defined(HAVE_PTHREAD) && !defined(HAVE_SOLARIS_THREADS)
+	if(dothread) /* cannot do threading */
+		return UB_NOERROR;
+#endif
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_AFTERFINAL;
+	}
+	ctx->dothread = dothread;
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+/** perform a select() on the result read pipe */
+static int 
+pollit(struct ub_ctx* ctx, struct timeval* t)
+{
+	fd_set r;
+#ifndef S_SPLINT_S
+	FD_ZERO(&r);
+	FD_SET(ctx->rrpipe[0], &r);
+#endif
+	if(select(ctx->rrpipe[0]+1, &r, NULL, NULL, t) == -1) {
+		return 0;
+	}
+	errno = 0;
+	return FD_ISSET(ctx->rrpipe[0], &r);
+}
+
+int 
+ub_poll(struct ub_ctx* ctx)
+{
+	struct timeval t;
+	memset(&t, 0, sizeof(t));
+	/* no need to hold lock while testing for readability. */
+	return pollit(ctx, &t);
+}
+
+int 
+ub_fd(struct ub_ctx* ctx)
+{
+	return ctx->rrpipe[0];
+}
+
+/** process answer from bg worker */
+static int
+process_answer_detail(struct ub_ctx* ctx, uint8_t* msg, uint32_t len,
+	ub_callback_t* cb, void** cbarg, int* err,
+	struct ub_result** res)
+{
+	struct ctx_query* q;
+	if(context_serial_getcmd(msg, len) != UB_LIBCMD_ANSWER) {
+		log_err("error: bad data from bg worker %d",
+			(int)context_serial_getcmd(msg, len));
+		return 0;
+	}
+
+	lock_basic_lock(&ctx->cfglock);
+	q = context_deserialize_answer(ctx, msg, len, err);
+	if(!q) {
+		lock_basic_unlock(&ctx->cfglock);
+		/* probably simply the lookup that failed, i.e.
+		 * response returned before cancel was sent out, so noerror */
+		return 1;
+	}
+	log_assert(q->async);
+
+	/* grab cb while locked */
+	if(q->cancelled) {
+		*cb = NULL;
+		*cbarg = NULL;
+	} else {
+		*cb = q->cb;
+		*cbarg = q->cb_arg;
+	}
+	if(*err) {
+		*res = NULL;
+		ub_resolve_free(q->res);
+	} else {
+		/* parse the message, extract rcode, fill result */
+		ldns_buffer* buf = ldns_buffer_new(q->msg_len);
+		struct regional* region = regional_create();
+		*res = q->res;
+		(*res)->rcode = LDNS_RCODE_SERVFAIL;
+		if(region && buf) {
+			ldns_buffer_clear(buf);
+			ldns_buffer_write(buf, q->msg, q->msg_len);
+			ldns_buffer_flip(buf);
+			libworker_enter_result(*res, buf, region,
+				q->msg_security);
+		}
+		ldns_buffer_free(buf);
+		regional_destroy(region);
+	}
+	q->res = NULL;
+	/* delete the q from list */
+	(void)rbtree_delete(&ctx->queries, q->node.key);
+	ctx->num_async--;
+	context_query_delete(q);
+	lock_basic_unlock(&ctx->cfglock);
+
+	if(*cb) return 2;
+	return 1;
+}
+
+/** process answer from bg worker */
+static int
+process_answer(struct ub_ctx* ctx, uint8_t* msg, uint32_t len)
+{
+	int err;
+	ub_callback_t cb;
+	void* cbarg;
+	struct ub_result* res;
+	int r;
+
+	r = process_answer_detail(ctx, msg, len, &cb, &cbarg, &err, &res);
+
+	/* no locks held while calling callback, so that library is
+	 * re-entrant. */
+	if(r == 2)
+		(*cb)(cbarg, err, res);
+
+	return r;
+}
+
+int 
+ub_process(struct ub_ctx* ctx)
+{
+	int r;
+	uint8_t* msg;
+	uint32_t len;
+	while(1) {
+		msg = NULL;
+		lock_basic_lock(&ctx->rrpipe_lock);
+		r = libworker_read_msg(ctx->rrpipe[0], &msg, &len, 1);
+		lock_basic_unlock(&ctx->rrpipe_lock);
+		if(r == 0)
+			return UB_PIPE;
+		else if(r == -1)
+			return UB_NOERROR;
+		if(!process_answer(ctx, msg, len)) {
+			free(msg);
+			return UB_PIPE;
+		}
+		free(msg);
+	}
+	return UB_NOERROR;
+}
+
+int 
+ub_wait(struct ub_ctx* ctx)
+{
+	int err;
+	ub_callback_t cb;
+	void* cbarg;
+	struct ub_result* res;
+	int r;
+	uint8_t* msg;
+	uint32_t len;
+	/* this is basically the same loop as _process(), but with changes.
+	 * holds the rrpipe lock and waits with pollit */
+	while(1) {
+		lock_basic_lock(&ctx->rrpipe_lock);
+		lock_basic_lock(&ctx->cfglock);
+		if(ctx->num_async == 0) {
+			lock_basic_unlock(&ctx->cfglock);
+			lock_basic_unlock(&ctx->rrpipe_lock);
+			break;
+		}
+		lock_basic_unlock(&ctx->cfglock);
+
+		/* keep rrpipe locked, while
+		 * 	o waiting for pipe readable
+		 * 	o parsing message
+		 * 	o possibly decrementing num_async
+		 * do callback without lock
+		 */
+		r = pollit(ctx, NULL);
+		if(r) {
+			r = libworker_read_msg(ctx->rrpipe[0], &msg, &len, 1);
+			if(r == 0) {
+				lock_basic_unlock(&ctx->rrpipe_lock);
+				return UB_PIPE;
+			}
+			if(r == -1) {
+				lock_basic_unlock(&ctx->rrpipe_lock);
+				continue;
+			}
+			r = process_answer_detail(ctx, msg, len, 
+				&cb, &cbarg, &err, &res);
+			lock_basic_unlock(&ctx->rrpipe_lock);
+			if(r == 0)
+				return UB_PIPE;
+			if(r == 2)
+				(*cb)(cbarg, err, res);
+		} else {
+			lock_basic_unlock(&ctx->rrpipe_lock);
+		}
+	}
+	return UB_NOERROR;
+}
+
+int 
+ub_resolve(struct ub_ctx* ctx, char* name, int rrtype, 
+	int rrclass, struct ub_result** result)
+{
+	struct ctx_query* q;
+	int r;
+
+	lock_basic_lock(&ctx->cfglock);
+	if(!ctx->finalized) {
+		r = context_finalize(ctx);
+		if(r) {
+			lock_basic_unlock(&ctx->cfglock);
+			return r;
+		}
+	}
+	/* create new ctx_query and attempt to add to the list */
+	lock_basic_unlock(&ctx->cfglock);
+	q = context_new(ctx, name, rrtype, rrclass, NULL, NULL);
+	if(!q)
+		return UB_NOMEM;
+	/* become a resolver thread for a bit */
+	*result = NULL;
+
+	r = libworker_fg(ctx, q);
+	if(r) {
+		lock_basic_lock(&ctx->cfglock);
+		(void)rbtree_delete(&ctx->queries, q->node.key);
+		context_query_delete(q);
+		lock_basic_unlock(&ctx->cfglock);
+		return r;
+	}
+	*result = q->res;
+	q->res = NULL;
+
+	lock_basic_lock(&ctx->cfglock);
+	(void)rbtree_delete(&ctx->queries, q->node.key);
+	context_query_delete(q);
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_resolve_async(struct ub_ctx* ctx, char* name, int rrtype, 
+	int rrclass, void* mydata, ub_callback_t callback, int* async_id)
+{
+	struct ctx_query* q;
+	uint8_t* msg = NULL;
+	uint32_t len = 0;
+
+	if(async_id)
+		*async_id = 0;
+	lock_basic_lock(&ctx->cfglock);
+	if(!ctx->finalized) {
+		int r = context_finalize(ctx);
+		if(r) {
+			lock_basic_unlock(&ctx->cfglock);
+			return r;
+		}
+	}
+	if(!ctx->created_bg) {
+		int r;
+		ctx->created_bg = 1;
+		lock_basic_unlock(&ctx->cfglock);
+		r = libworker_bg(ctx);
+		if(r) {
+			lock_basic_lock(&ctx->cfglock);
+			ctx->created_bg = 0;
+			lock_basic_unlock(&ctx->cfglock);
+			return r;
+		}
+	} else {
+		lock_basic_unlock(&ctx->cfglock);
+	}
+
+	/* create new ctx_query and attempt to add to the list */
+	q = context_new(ctx, name, rrtype, rrclass, callback, mydata);
+	if(!q)
+		return UB_NOMEM;
+
+	/* write over pipe to background worker */
+	lock_basic_lock(&ctx->cfglock);
+	msg = context_serialize_new_query(q, &len);
+	if(!msg) {
+		(void)rbtree_delete(&ctx->queries, q->node.key);
+		ctx->num_async--;
+		context_query_delete(q);
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_NOMEM;
+	}
+	if(async_id)
+		*async_id = q->querynum;
+	lock_basic_unlock(&ctx->cfglock);
+	
+	lock_basic_lock(&ctx->qqpipe_lock);
+	if(!libworker_write_msg(ctx->qqpipe[1], msg, len, 0)) {
+		lock_basic_unlock(&ctx->qqpipe_lock);
+		free(msg);
+		return UB_PIPE;
+	}
+	lock_basic_unlock(&ctx->qqpipe_lock);
+	free(msg);
+	return UB_NOERROR;
+}
+
+int 
+ub_cancel(struct ub_ctx* ctx, int async_id)
+{
+	struct ctx_query* q;
+	uint8_t* msg = NULL;
+	uint32_t len = 0;
+	lock_basic_lock(&ctx->cfglock);
+	q = (struct ctx_query*)rbtree_search(&ctx->queries, &async_id);
+	if(!q || !q->async) {
+		/* it is not there, so nothing to do */
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_NOERROR;
+	}
+	log_assert(q->async);
+	q->cancelled = 1;
+	
+	/* delete it */
+	if(!ctx->dothread) { /* if forked */
+		(void)rbtree_delete(&ctx->queries, q->node.key);
+		ctx->num_async--;
+		context_query_delete(q);
+		msg = context_serialize_cancel(q, &len);
+		lock_basic_unlock(&ctx->cfglock);
+		if(!msg) {
+			return UB_NOMEM;
+		}
+		/* send cancel to background worker */
+		lock_basic_lock(&ctx->qqpipe_lock);
+		if(!libworker_write_msg(ctx->qqpipe[1], msg, len, 0)) {
+			lock_basic_unlock(&ctx->qqpipe_lock);
+			free(msg);
+			return UB_PIPE;
+		}
+		lock_basic_unlock(&ctx->qqpipe_lock);
+		free(msg);
+	} else {
+		lock_basic_unlock(&ctx->cfglock);
+	}
+	return UB_NOERROR;
+}
+
+void 
+ub_resolve_free(struct ub_result* result)
+{
+	char** p;
+	if(!result) return;
+	free(result->qname);
+	if(result->canonname != result->qname)
+		free(result->canonname);
+	if(result->data)
+		for(p = result->data; *p; p++)
+			free(*p);
+	free(result->data);
+	free(result->len);
+	free(result);
+}
+
+const char* 
+ub_strerror(int err)
+{
+	switch(err) {
+		case UB_NOERROR: return "no error";
+		case UB_SOCKET: return "socket io error";
+		case UB_NOMEM: return "out of memory";
+		case UB_SYNTAX: return "syntax error";
+		case UB_SERVFAIL: return "server failure";
+		case UB_FORKFAIL: return "could not fork";
+		case UB_INITFAIL: return "initialization failure";
+		case UB_AFTERFINAL: return "setting change after finalize";
+		case UB_PIPE: return "error in pipe communication with async";
+		case UB_READFILE: return "error reading file";
+		default: return "unknown error";
+	}
+}
+
+int 
+ub_ctx_set_fwd(struct ub_ctx* ctx, char* addr)
+{
+	struct sockaddr_storage storage;
+	socklen_t stlen;
+	struct config_stub* s;
+	char* dupl;
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		errno=EINVAL;
+		return UB_AFTERFINAL;
+	}
+	if(!addr) {
+		/* disable fwd mode - the root stub should be first. */
+		if(ctx->env->cfg->forwards &&
+			strcmp(ctx->env->cfg->forwards->name, ".") == 0) {
+			s = ctx->env->cfg->forwards;
+			ctx->env->cfg->forwards = s->next;
+			s->next = NULL;
+			config_delstubs(s);
+		}
+		lock_basic_unlock(&ctx->cfglock);
+		return UB_NOERROR;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+
+	/* check syntax for addr */
+	if(!extstrtoaddr(addr, &storage, &stlen)) {
+		errno=EINVAL;
+		return UB_SYNTAX;
+	}
+	
+	/* it parses, add root stub in front of list */
+	lock_basic_lock(&ctx->cfglock);
+	if(!ctx->env->cfg->forwards ||
+		strcmp(ctx->env->cfg->forwards->name, ".") != 0) {
+		s = calloc(1, sizeof(*s));
+		if(!s) {
+			lock_basic_unlock(&ctx->cfglock);
+			errno=ENOMEM;
+			return UB_NOMEM;
+		}
+		s->name = strdup(".");
+		if(!s->name) {
+			free(s);
+			lock_basic_unlock(&ctx->cfglock);
+			errno=ENOMEM;
+			return UB_NOMEM;
+		}
+		s->next = ctx->env->cfg->forwards;
+		ctx->env->cfg->forwards = s;
+	} else {
+		log_assert(ctx->env->cfg->forwards);
+		s = ctx->env->cfg->forwards;
+	}
+	dupl = strdup(addr);
+	if(!dupl) {
+		lock_basic_unlock(&ctx->cfglock);
+		errno=ENOMEM;
+		return UB_NOMEM;
+	}
+	if(!cfg_strlist_insert(&s->addrs, dupl)) {
+		free(dupl);
+		lock_basic_unlock(&ctx->cfglock);
+		errno=ENOMEM;
+		return UB_NOMEM;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	return UB_NOERROR;
+}
+
+int 
+ub_ctx_resolvconf(struct ub_ctx* ctx, char* fname)
+{
+	FILE* in;
+	int numserv = 0;
+	char buf[1024];
+	char* parse, *addr;
+	int r;
+	if(fname == NULL)
+		fname = "/etc/resolv.conf";
+	in = fopen(fname, "r");
+	if(!in) {
+		/* error in errno! perror(fname) */
+		return UB_READFILE;
+	}
+	while(fgets(buf, (int)sizeof(buf), in)) {
+		buf[sizeof(buf)-1] = 0;
+		parse=buf;
+		while(*parse == ' ' || *parse == '\t')
+			parse++;
+		if(strncmp(parse, "nameserver", 10) == 0) {
+			numserv++;
+			parse += 10; /* skip 'nameserver' */
+			/* skip whitespace */
+			while(*parse == ' ' || *parse == '\t')
+				parse++;
+			addr = parse;
+			/* skip [0-9a-fA-F.:]*, i.e. IP4 and IP6 address */
+			while(isxdigit(*parse) || *parse=='.' || *parse==':')
+				parse++;
+			/* terminate after the address, remove newline */
+			*parse = 0;
+			
+			if((r = ub_ctx_set_fwd(ctx, addr)) != UB_NOERROR) {
+				fclose(in);
+				return r;
+			}
+		}
+	}
+	fclose(in);
+	if(numserv == 0) {
+		/* from resolv.conf(5) if none given, use localhost */
+		return ub_ctx_set_fwd(ctx, "127.0.0.1");
+	}
+	return UB_NOERROR;
+}
+
+int
+ub_ctx_hosts(struct ub_ctx* ctx, char* fname)
+{
+	FILE* in;
+	char buf[1024], ldata[1024];
+	char* parse, *addr, *name, *ins;
+	lock_basic_lock(&ctx->cfglock);
+	if(ctx->finalized) {
+		lock_basic_unlock(&ctx->cfglock);
+		errno=EINVAL;
+		return UB_AFTERFINAL;
+	}
+	lock_basic_unlock(&ctx->cfglock);
+	if(fname == NULL)
+		fname = "/etc/hosts";
+	in = fopen(fname, "r");
+	if(!in) {
+		/* error in errno! perror(fname) */
+		return UB_READFILE;
+	}
+	while(fgets(buf, (int)sizeof(buf), in)) {
+		buf[sizeof(buf)-1] = 0;
+		parse=buf;
+		while(*parse == ' ' || *parse == '\t')
+			parse++;
+		if(*parse == '#')
+			continue; /* skip comment */
+		/* format: <addr> spaces <name> spaces <name> ... */
+		addr = parse;
+		/* skip addr */
+		while(isxdigit(*parse) || *parse == '.' || *parse == ':')
+			parse++;
+		if(*parse != ' ' && *parse != '\t') {
+			/* must have whitespace after address */
+			fclose(in);
+			errno=EINVAL;
+			return UB_SYNTAX;
+		}
+		*parse++ = 0; /* end delimiter for addr ... */
+		/* go to names and add them */
+		while(*parse) {
+			while(*parse == ' ' || *parse == '\t' || *parse=='\n')
+				parse++;
+			if(*parse == 0 || *parse == '#')
+				break;
+			/* skip name, allows (too) many printable characters */
+			name = parse;
+			while('!' <= *parse && *parse <= '~')
+				parse++;
+			if(*parse)
+				*parse++ = 0; /* end delimiter for name */
+			snprintf(ldata, sizeof(ldata), "%s %s %s",
+				name, str_is_ip6(addr)?"AAAA":"A", addr);
+			ins = strdup(ldata);
+			if(!ins) {
+				/* out of memory */
+				fclose(in);
+				errno=ENOMEM;
+				return UB_NOMEM;
+			}
+			lock_basic_lock(&ctx->cfglock);
+			if(!cfg_strlist_insert(&ctx->env->cfg->local_data, 
+				ins)) {
+				lock_basic_unlock(&ctx->cfglock);
+				fclose(in);
+				free(ins);
+				errno=ENOMEM;
+				return UB_NOMEM;
+			}
+			lock_basic_unlock(&ctx->cfglock);
+		}
+	}
+	fclose(in);
+	return UB_NOERROR;
+}

libunbound/libworker.h

@@ -0,0 +1,236 @@
+/*
+ * libunbound/worker.h - worker thread or process that resolves
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains the worker process or thread that performs
+ * the DNS resolving and validation. The worker is called by a procedure
+ * and if in the background continues until exit, if in the foreground
+ * returns from the procedure when done.
+ */
+#ifndef LIBUNBOUND_WORKER_H
+#define LIBUNBOUND_WORKER_H
+#include "util/data/packed_rrset.h"
+struct ub_ctx;
+struct ub_result;
+struct module_env;
+struct comm_base;
+struct outside_network;
+struct ub_randstate;
+struct ctx_query;
+struct outbound_entry;
+struct module_qstate;
+struct comm_point;
+struct comm_reply;
+struct libworker_res_list;
+struct regional;
+
+/** 
+ * The library-worker status structure
+ * Internal to the worker.
+ */
+struct libworker {
+	/** every worker has a unique thread_num. (first in struct) */
+	int thread_num;
+	/** context we are operating under */
+	struct ub_ctx* ctx;
+
+	/** is this the bg worker? */
+	int is_bg;
+	/** is this a bg worker that is threaded (not forked)? */
+	int is_bg_thread;
+
+	/** copy of the module environment with worker local entries. */
+	struct module_env* env;
+	/** the event base this worker works with */
+	struct comm_base* base;
+	/** the backside outside network interface to the auth servers */
+	struct outside_network* back;
+	/** random() table for this worker. */
+	struct ub_randstate* rndstate;
+	
+	/** commpoint to listen to commands */
+	struct comm_point* cmd_com;
+	/** are we currently reading a command, 0 if not, else bytecount */
+	size_t cmd_read;
+	/** size of current read command, may be partially read */
+	uint32_t cmd_len;
+	/** the current read command content, malloced, can be partially read*/
+	uint8_t* cmd_msg;
+
+	/** commpoint to write results back */
+	struct comm_point* res_com;
+	/** are we curently writing a result, 0 if not, else bytecount into
+	 * the res_list first entry. */
+	size_t res_write;
+	/** list of outstanding results to be written back */
+	struct libworker_res_list* res_list;
+	/** last in list */
+	struct libworker_res_list* res_last;
+};
+
+/**
+ * List of results (arbitrary command serializations) to write back
+ */
+struct libworker_res_list {
+	/** next in list */
+	struct libworker_res_list* next;
+	/** serialized buffer to write */
+	uint8_t* buf;
+	/** length to write */
+	uint32_t len;
+};
+
+/**
+ * Create a background worker
+ * @param ctx: is updated with pid/tid of the background worker.
+ *	a new allocation cache is obtained from ctx. It contains the
+ *	threadnumber and unique id for further (shared) cache insertions.
+ * @return 0 if OK, else error.
+ *	Further communication is done via the pipes in ctx. 
+ */
+int libworker_bg(struct ub_ctx* ctx);
+
+/**
+ * Create a foreground worker.
+ * This worker will join the threadpool of resolver threads.
+ * It exits when the query answer has been obtained (or error).
+ * This routine blocks until the worker is finished.
+ * @param ctx: new allocation cache obtained and returned to it.
+ * @param q: query (result is stored in here).
+ * @return 0 if finished OK, else error.
+ */
+int libworker_fg(struct ub_ctx* ctx, struct ctx_query* q);
+
+/** cleanup the cache to remove all rrset IDs from it, arg is libworker */
+void libworker_alloc_cleanup(void* arg);
+
+/**
+ * Worker service routine to send udp messages for modules.
+ * @param pkt: packet to send.
+ * @param addr: where to.
+ * @param addrlen: length of addr.
+ * @param timeout: seconds to wait until timeout.
+ * @param q: wich query state to reactivate upon return.
+ * @param use_tcp: true to use TCP, false for UDP.
+ * @return: false on failure (memory or socket related). no query was
+ *      sent.
+ */
+int libworker_send_packet(ldns_buffer* pkt, struct sockaddr_storage* addr,
+        socklen_t addrlen, int timeout, struct module_qstate* q, int use_tcp);
+
+/**
+ * Worker service routine to send serviced queries to authoritative servers.
+ * @param qname: query name. (host order)
+ * @param qnamelen: length in bytes of qname, including trailing 0.
+ * @param qtype: query type. (host order)
+ * @param qclass: query class. (host order)
+ * @param flags: host order flags word, with opcode and CD bit.
+ * @param dnssec: if set, EDNS record will have DO bit set.
+ * @param addr: where to.
+ * @param addrlen: length of addr.
+ * @param q: wich query state to reactivate upon return.
+ * @return: false on failure (memory or socket related). no query was
+ *      sent.
+ */
+struct outbound_entry* libworker_send_query(uint8_t* qname, size_t qnamelen,
+        uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec,
+        struct sockaddr_storage* addr, socklen_t addrlen,
+        struct module_qstate* q);
+
+/** process incoming replies from the network */
+int libworker_handle_reply(struct comm_point* c, void* arg, int error,
+        struct comm_reply* reply_info);
+
+/** process incoming serviced query replies from the network */
+int libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
+        struct comm_reply* reply_info);
+
+/** handle control command coming into server */
+int libworker_handle_control_cmd(struct comm_point* c, void* arg, 
+	int err, struct comm_reply* rep);
+
+/** handle opportunity to write result back */
+int libworker_handle_result_write(struct comm_point* c, void* arg, 
+	int err, struct comm_reply* rep);
+
+/**
+ * Write length bytes followed by message.
+ * @param fd: the socket to write on. Is nonblocking.
+ * 	Set to blocking by the function,
+ * 	and back to non-blocking at exit of function.
+ * @param buf: the message.
+ * @param len: length of message.
+ * @param nonblock: if set to true, the first write is nonblocking.
+ * 	If the first write fails the function returns -1.
+ * 	If set false, the first write is blocking.
+ * @return: all remainder writes are nonblocking.
+ * 	return 0 on error, in that case blocking/nonblocking of socket is
+ * 		unknown.
+ * 	return 1 if all OK.
+ */
+int libworker_write_msg(int fd, uint8_t* buf, uint32_t len, int nonblock);
+
+/**
+ * Read length bytes followed by message.
+ * @param fd: the socket to write on. Is nonblocking.
+ * 	Set to blocking by the function,
+ * 	and back to non-blocking at exit of function.
+ * @param buf: the message, malloced.
+ * @param len: length of message, returned.
+ * @param nonblock: if set to true, the first read is nonblocking.
+ * 	If the first read fails the function returns -1.
+ * 	If set false, the first read is blocking.
+ * @return: all remainder reads are nonblocking.
+ * 	return 0 on error, in that case blocking/nonblocking of socket is 
+ * 		unknown. On EOF 0 is returned.
+ * 	return 1 if all OK.
+ */
+int libworker_read_msg(int fd, uint8_t** buf, uint32_t* len, int nonblock);
+
+/** 
+ * fill result from parsed message, on error fills servfail 
+ * @param res: is clear at start, filled in at end.
+ * @param buf: contains DNS message.
+ * @param temp: temporary buffer for parse.
+ * @param msg_security: security status of the DNS message.
+ *   On error, the res may contain a different status 
+ *   (out of memory is not secure, not bogus).
+ */
+void libworker_enter_result(struct ub_result* res, ldns_buffer* buf,
+	struct regional* temp, enum sec_status msg_security);
+
+#endif /* LIBUNBOUND_WORKER_H */

libunbound/ubsyms.def

@@ -0,0 +1,22 @@
+ub_ctx_create
+ub_ctx_delete
+ub_ctx_set_option
+ub_ctx_config
+ub_ctx_set_fwd
+ub_ctx_resolvconf
+ub_ctx_hosts
+ub_ctx_add_ta
+ub_ctx_add_ta_file
+ub_ctx_trustedkeys
+ub_ctx_debugout
+ub_ctx_debuglevel
+ub_ctx_async
+ub_poll
+ub_wait
+ub_fd
+ub_process
+ub_resolve
+ub_resolve_async
+ub_cancel
+ub_resolve_free
+ub_strerror

libunbound/unbound.h

@@ -0,0 +1,461 @@
+/*
+ * unbound.h - unbound validating resolver public API
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to resolve DNS queries and 
+ * validate the answers. Synchonously and asynchronously.
+ *
+ * Several ways to use this interface from an application wishing
+ * to perform (validated) DNS lookups.
+ *
+ * All start with
+ *	ctx = ub_ctx_create();
+ *	err = ub_ctx_add_ta(ctx, "...");
+ *	err = ub_ctx_add_ta(ctx, "...");
+ *	... some lookups
+ *	... call ub_ctx_delete(ctx); when you want to stop.
+ *
+ * Application not threaded. Blocking.
+ *	int err = ub_resolve(ctx, "www.example.com", ...
+ *	if(err) fprintf(stderr, "lookup error: %s\n", ub_strerror(err));
+ *	... use the answer
+ *
+ * Application not threaded. Non-blocking ('asynchronous').
+ *      err = ub_resolve_async(ctx, "www.example.com", ... my_callback);
+ *	... application resumes processing ...
+ *	... and when either ub_poll(ctx) is true
+ *	... or when the file descriptor ub_fd(ctx) is readable,
+ *	... or whenever, the app calls ...
+ *	ub_process(ctx);
+ *	... if no result is ready, the app resumes processing above,
+ *	... or process() calls my_callback() with results.
+ *
+ *      ... if the application has nothing more to do, wait for answer
+ *      ub_wait(ctx); 
+ *
+ * Application threaded. Blocking.
+ *	Blocking, same as above. The current thread does the work.
+ *	Multiple threads can use the *same context*, each does work and uses
+ *	shared cache data from the context.
+ *
+ * Application threaded. Non-blocking ('asynchronous').
+ *	... setup threaded-asynchronous config option
+ *	err = ub_ctx_async(ctx, 1);
+ *	... same as async for non-threaded
+ *	... the callbacks are called in the thread that calls process(ctx)
+ *
+ * If no threading is compiled in, the above async example uses fork(2) to
+ * create a process to perform the work. The forked process exits when the 
+ * calling process exits, or ctx_delete() is called.
+ * Otherwise, for asynchronous with threading, a worker thread is created.
+ *
+ * The blocking calls use shared ctx-cache when threaded. Thus
+ * ub_resolve() and ub_resolve_async() && ub_wait() are
+ * not the same. The first makes the current thread do the work, setting
+ * up buffers, etc, to perform the work (but using shared cache data).
+ * The second calls another worker thread (or process) to perform the work.
+ * And no buffers need to be set up, but a context-switch happens.
+ */
+#ifndef _UB_UNBOUND_H
+#define _UB_UNBOUND_H
+
+/**
+ * The validation context is created to hold the resolver status,
+ * validation keys and a small cache (containing messages, rrsets,
+ * roundtrip times, trusted keys, lameness information).
+ *
+ * Its contents are internally defined.
+ */
+struct ub_ctx;
+
+/**
+ * The validation and resolution results.
+ * Allocated by the resolver, and need to be freed by the application
+ * with ub_resolve_free().
+ */
+struct ub_result {
+	/** The original question, name text string. */
+	char* qname;
+	/** the type asked for */
+	int qtype;
+	/** the class asked for */
+	int qclass;
+
+	/** 
+	 * a list of network order DNS rdata items, terminated with a 
+	 * NULL pointer, so that data[0] is the first result entry,
+	 * data[1] the second, and the last entry is NULL. 
+	 * If there was no data, data[0] is NULL.
+	 */
+	char** data;
+
+	/** the length in bytes of the data items, len[i] for data[i] */
+	int* len;
+
+	/** 
+	 * canonical name for the result (the final cname). 
+	 * zero terminated string.
+	 * May be NULL if no canonical name exists.
+	 */
+	char* canonname;
+
+	/**
+	 * DNS RCODE for the result. May contain additional error code if
+	 * there was no data due to an error. 0 (NOERROR) if okay.
+	 */
+	int rcode;
+
+	/**
+	 * If there is any data, this is true.
+	 * If false, there was no data (nxdomain may be true, rcode can be set).
+	 */
+	int havedata;
+
+	/** 
+	 * If there was no data, and the domain did not exist, this is true.
+	 * If it is false, and there was no data, then the domain name 
+	 * is purported to exist, but the requested data type is not available.
+	 */
+	int nxdomain;
+
+	/**
+	 * True, if the result is validated securely.
+	 * False, if validation failed or domain queried has no security info.
+	 *
+	 * It is possible to get a result with no data (havedata is false),
+	 * and secure is true. This means that the non-existance of the data
+	 * was cryptographically proven (with signatures).
+	 */
+	int secure;
+
+	/** 
+	 * If the result was not secure (secure==0), and this result is due 
+	 * to a security failure, bogus is true.
+	 * This means the data has been actively tampered with, signatures
+	 * failed, expected signatures were not present, timestamps on 
+	 * signatures were out of date and so on.
+	 *
+	 * If !secure and !bogus, this can happen if the data is not secure 
+	 * because security is disabled for that domain name. 
+	 * This means the data is from a domain where data is not signed.
+	 */
+	int bogus;
+};
+
+/**
+ * Callback for results of async queries.
+ * The readable function definition looks like:
+ * void my_callback(void* my_arg, int err, struct ub_result* result);
+ * It is called with
+ *	void* my_arg: your pointer to a (struct of) data of your choice, 
+ *		or NULL.
+ *	int err: if 0 all is OK, otherwise an error occured and no results
+ *	     are forthcoming.
+ *	struct result: pointer to more detailed result structure.
+ *		This structure is allocated on the heap and needs to be
+ *		freed with ub_resolve_free(result);
+ */
+typedef void (*ub_callback_t)(void*, int, struct ub_result*);
+
+/**
+ * Create a resolving and validation context.
+ * The information from /etc/resolv.conf and /etc/hosts is not utilised by
+ * default. Use ub_ctx_resolvconf and ub_ctx_hosts to read them.
+ * @return a new context. default initialisation.
+ * 	returns NULL on error.
+ */
+struct ub_ctx* ub_ctx_create(void);
+
+/**
+ * Destroy a validation context and free all its resources.
+ * Outstanding async queries are killed and callbacks are not called for them.
+ * @param ctx: context to delete.
+ */
+void ub_ctx_delete(struct ub_ctx* ctx);
+
+/**
+ * Set an option for the context.
+ * @param ctx: context.
+ * @param opt: option name from the unbound.conf config file format.
+ *	(not all settings applicable). The name includes the trailing ':'
+ *	for example ub_ctx_set_option("logfile:", "mylog.txt");
+ * 	This is a power-users interface that lets you specify all sorts
+ * 	of options.
+ * 	For some specific options, such as adding trust anchors, special
+ * 	routines exist.
+ * @param val: value of the option.
+ * @return: 0 if OK, else error.
+ */
+int ub_ctx_set_option(struct ub_ctx* ctx, char* opt, char* val);
+
+/**
+ * setup configuration for the given context.
+ * @param ctx: context.
+ * @param fname: unbound config file (not all settings applicable).
+ * 	This is a power-users interface that lets you specify all sorts
+ * 	of options.
+ * 	For some specific options, such as adding trust anchors, special
+ * 	routines exist.
+ * @return: 0 if OK, else error.
+ */
+int ub_ctx_config(struct ub_ctx* ctx, char* fname);
+
+/**
+ * Set machine to forward DNS queries to, the caching resolver to use. 
+ * IP4 or IP6 address. Forwards all DNS requests to that machine, which 
+ * is expected to run a recursive resolver. If the proxy is not 
+ * DNSSEC-capable, validation may fail. Can be called several times, in 
+ * that case the addresses are used as backup servers.
+ *
+ * To read the list of nameservers from /etc/resolv.conf (from DHCP or so),
+ * use the call ub_ctx_resolvconf.
+ *
+ * @param ctx: context.
+ *	At this time it is only possible to set configuration before the
+ *	first resolve is done.
+ * @param addr: address, IP4 or IP6 in string format.
+ * 	If the addr is NULL, forwarding is disabled.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_set_fwd(struct ub_ctx* ctx, char* addr);
+
+/**
+ * Read list of nameservers to use from the filename given.
+ * Usually "/etc/resolv.conf". Uses those nameservers as caching proxies.
+ * If they do not support DNSSEC, validation may fail.
+ *
+ * Only nameservers are picked up, the searchdomain, ndots and other
+ * settings from resolv.conf(5) are ignored.
+ *
+ * @param ctx: context.
+ *	At this time it is only possible to set configuration before the
+ *	first resolve is done.
+ * @param fname: file name string. If NULL "/etc/resolv.conf" is used.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_resolvconf(struct ub_ctx* ctx, char* fname);
+
+/**
+ * Read list of hosts from the filename given.
+ * Usually "/etc/hosts". 
+ * These addresses are not flagged as DNSSEC secure when queried for.
+ *
+ * @param ctx: context.
+ *	At this time it is only possible to set configuration before the
+ *	first resolve is done.
+ * @param fname: file name string. If NULL "/etc/hosts" is used.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_hosts(struct ub_ctx* ctx, char* fname);
+
+/**
+ * Add a trust anchor to the given context.
+ * The trust anchor is a string, on one line, that holds a valid DNSKEY or
+ * DS RR. 
+ * @param ctx: context.
+ *	At this time it is only possible to add trusted keys before the
+ *	first resolve is done.
+ * @param ta: string, with zone-format RR on one line.
+ * 	[domainname] [TTL optional] [type] [class optional] [rdata contents]
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_add_ta(struct ub_ctx* ctx, char* ta);
+
+/**
+ * Add trust anchors to the given context.
+ * Pass name of a file with DS and DNSKEY records (like from dig or drill).
+ * @param ctx: context.
+ *	At this time it is only possible to add trusted keys before the
+ *	first resolve is done.
+ * @param fname: filename of file with keyfile with trust anchors.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_add_ta_file(struct ub_ctx* ctx, char* fname);
+
+/**
+ * Add trust anchors to the given context.
+ * Pass the name of a bind-style config file with trusted-keys{}.
+ * @param ctx: context.
+ *	At this time it is only possible to add trusted keys before the
+ *	first resolve is done.
+ * @param fname: filename of file with bind-style config entries with trust
+ * 	anchors.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_trustedkeys(struct ub_ctx* ctx, char* fname);
+
+/**
+ * Set debug output (and error output) to the specified stream.
+ * Pass NULL to disable. Default is stderr.
+ * @param ctx: context.
+ * @param out: FILE* out file stream to log to.
+ * 	Type void* to avoid stdio dependency of this header file.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_debugout(struct ub_ctx* ctx, void* out);
+
+/**
+ * Set debug verbosity for the context
+ * Output is directed to stderr.
+ * @param ctx: context.
+ * @param d: debug level, 0 is off, 1 is very minimal, 2 is detailed, 
+ *	and 3 is lots.
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_debuglevel(struct ub_ctx* ctx, int d);
+
+/**
+ * Set a context behaviour for asynchronous action.
+ * @param ctx: context.
+ * @param dothread: if true, enables threading and a call to resolve_async() 
+ *	creates a thread to handle work in the background.
+ *	If false, a process is forked to handle work in the background.
+ *	Changes to this setting after async() calls have been made have 
+ *	no effect (delete and re-create the context to change).
+ * @return 0 if OK, else error.
+ */
+int ub_ctx_async(struct ub_ctx* ctx, int dothread);
+
+/**
+ * Poll a context to see if it has any new results
+ * Do not poll in a loop, instead extract the fd below to poll for readiness,
+ * and then check, or wait using the wait routine.
+ * @param ctx: context.
+ * @return: 0 if nothing to read, or nonzero if a result is available.
+ * 	If nonzero, call ctx_process() to do callbacks.
+ */
+int ub_poll(struct ub_ctx* ctx);
+
+/**
+ * Wait for a context to finish with results. Calls ub_process() after
+ * the wait for you. After the wait, there are no more outstanding 
+ * asynchronous queries.
+ * @param ctx: context.
+ * @return: 0 if OK, else error.
+ */
+int ub_wait(struct ub_ctx* ctx);
+
+/**
+ * Get file descriptor. Wait for it to become readable, at this point
+ * answers are returned from the asynchronous validating resolver.
+ * Then call the ub_process to continue processing.
+ * This routine works immediately after context creation, the fd
+ * does not change.
+ * @param ctx: context.
+ * @return: -1 on error, or file descriptor to use select(2) with.
+ */
+int ub_fd(struct ub_ctx* ctx);
+
+/**
+ * Call this routine to continue processing results from the validating
+ * resolver (when the fd becomes readable).
+ * Will perform necessary callbacks.
+ * @param ctx: context
+ * @return: 0 if OK, else error.
+ */
+int ub_process(struct ub_ctx* ctx);
+
+/**
+ * Perform resolution and validation of the target name.
+ * @param ctx: context.
+ *	The context is finalized, and can no longer accept config changes.
+ * @param name: domain name in text format (a zero terminated text string).
+ * @param rrtype: type of RR in host order, 1 is A (address).
+ * @param rrclass: class of RR in host order, 1 is IN (for internet).
+ * @param result: the result data is returned in a newly allocated result
+ * 	structure. May be NULL on return, return value is set to an error 
+ * 	in that case (out of memory).
+ * @return 0 if OK, else error.
+ */
+int ub_resolve(struct ub_ctx* ctx, char* name, int rrtype, 
+	int rrclass, struct ub_result** result);
+
+/**
+ * Perform resolution and validation of the target name.
+ * Asynchronous, after a while, the callback will be called with your
+ * data and the result.
+ * @param ctx: context.
+ *	If no thread or process has been created yet to perform the
+ *	work in the background, it is created now.
+ *	The context is finalized, and can no longer accept config changes.
+ * @param name: domain name in text format (a string).
+ * @param rrtype: type of RR in host order, 1 is A.
+ * @param rrclass: class of RR in host order, 1 is IN (for internet).
+ * @param mydata: this data is your own data (you can pass NULL),
+ * 	and is passed on to the callback function.
+ * @param callback: this is called on completion of the resolution.
+ * 	It is called as:
+ * 	void callback(void* mydata, int err, struct ub_result* result)
+ * 	with mydata: the same as passed here, you may pass NULL,
+ * 	with err: is 0 when a result has been found.
+ * 	with result: a newly allocated result structure.
+ *		The result may be NULL, in that case err is set.
+ *
+ * 	If an error happens during processing, your callback will be called
+ * 	with error set to a nonzero value (and result==NULL).
+ * @param async_id: if you pass a non-NULL value, an identifier number is
+ *	returned for the query as it is in progress. It can be used to 
+ *	cancel the query.
+ * @return 0 if OK, else error.
+ */
+int ub_resolve_async(struct ub_ctx* ctx, char* name, int rrtype, 
+	int rrclass, void* mydata, ub_callback_t callback, int* async_id);
+
+/**
+ * Cancel an async query in progress.
+ * Its callback will not be called.
+ *
+ * @param ctx: context.
+ * @param async_id: which query to cancel.
+ * @return 0 if OK, else error.
+ */
+int ub_cancel(struct ub_ctx* ctx, int async_id);
+
+/**
+ * Free storage associated with a result structure.
+ * @param result: to free
+ */
+void ub_resolve_free(struct ub_result* result);
+
+/** 
+ * Convert error value to a human readable string.
+ * @param err: error code from one of the ub_val* functions.
+ * @return pointer to constant text string, zero terminated.
+ */
+const char* ub_strerror(int err);
+
+#endif /* _UB_UNBOUND_H */

makedist.sh

@@ -146,7 +146,9 @@ if test -z "$LDNSDIR"; then
     # try to autodetect from Makefile (if present)
     if test -f Makefile; then
 	  eval `grep 'ldnsdir=' Makefile`
-	  LDNSDIR="$ldnsdir"
+	  if echo "$ldnsdir" | grep -v ldns-src/ >/dev/null 2>&1; then
+	  	LDNSDIR="$ldnsdir"
+	  fi
     fi
 fi
 
@@ -182,6 +184,7 @@ flex -i -t util/configlexer.lex >> util/configlexer.c  || error_cleanup "Failed
 bison -y -d -o util/configparser.c util/configparser.y || error_cleanup "Failed to create configparser"
 
 # check shared code, ldns-testpkts from ldns examples, if possible.
+cd ../..
 if test ! -z "$LDNSDIR"; then
 	if diff -q $LDNSDIR/examples/ldns-testpkts.c testcode/ldns-testpkts.c &&
 	   diff -q $LDNSDIR/examples/ldns-testpkts.h testcode/ldns-testpkts.h; then
@@ -190,6 +193,7 @@ if test ! -z "$LDNSDIR"; then
 		error_cleanup "ldns-testpkts is different in ldns and unbound"
 	fi
 fi
+cd $temp_dir/unbound
 
 find . -name .c-mode-rc.el -exec rm {} \;
 find . -name .cvsignore -exec rm {} \;
@@ -209,6 +213,10 @@ fi
 
 replace_all doc/README
 replace_all doc/unbound.8
+replace_all doc/unbound.conf.5
+replace_all doc/unbound-checkconf.8
+replace_all doc/unbound-host.1
+replace_all doc/libunbound.3
 
 info "Renaming Unbound directory to unbound-$version."
 cd ..

services/cache/dns.h

@@ -137,6 +137,4 @@ struct dns_msg* dns_cache_lookup(struct module_env* env,
 int cache_fill_missing(struct module_env* env, uint16_t qclass, 
 	struct regional* region, struct delegpt* dp);
 
-/** Find covering DNAME */
-
 #endif /* SERVICES_CACHE_DNS_H */

services/cache/infra.c

@@ -64,12 +64,11 @@ infra_host_compfunc(void* key1, void* key2)
 }
 
 void 
-infra_host_delkeyfunc(void* k, void* ATTR_UNUSED(arg), int il)
+infra_host_delkeyfunc(void* k, void* ATTR_UNUSED(arg))
 {
 	struct infra_host_key* key = (struct infra_host_key*)k;
 	if(!key)
 		return;
-	if(il) { lock_rw_unlock(&key->entry.lock); }
 	lock_rw_destroy(&key->entry.lock);
 	free(key);
 }
@@ -309,12 +308,11 @@ infra_lame_compfunc(void* key1, void* key2)
 }
 
 void 
-infra_lame_delkeyfunc(void* k, void* ATTR_UNUSED(arg), int il)
+infra_lame_delkeyfunc(void* k, void* ATTR_UNUSED(arg))
 {
 	struct infra_lame_key* key = (struct infra_lame_key*)k;
 	if(!key) 
 		return;
-	if(il) { lock_rw_unlock(&key->entry.lock); }
 	lock_rw_destroy(&key->entry.lock);
 	free(key->zonename);
 	free(key);

services/cache/infra.h

@@ -267,7 +267,7 @@ size_t infra_host_sizefunc(void* k, void* d);
 int infra_host_compfunc(void* key1, void* key2);
 
 /** delete key, and destroy the lock */
-void infra_host_delkeyfunc(void* k, void* arg, int il);
+void infra_host_delkeyfunc(void* k, void* arg);
 
 /** delete data and destroy the lameness hashtable */
 void infra_host_deldatafunc(void* d, void* arg);
@@ -280,7 +280,7 @@ size_t infra_lame_sizefunc(void* k, void* d);
 int infra_lame_compfunc(void* key1, void* key2);
 
 /** free key, lock and zonename */
-void infra_lame_delkeyfunc(void* k, void* arg, int il);
+void infra_lame_delkeyfunc(void* k, void* arg);
 
 /** free the lameness data */
 void infra_lame_deldatafunc(void* d, void* arg);

services/cache/rrset.c

@@ -47,6 +47,13 @@
 #include "util/regional.h"
 #include "util/alloc.h"
 
+void
+rrset_markdel(void* key)
+{
+	struct ub_packed_rrset_key* r = (struct ub_packed_rrset_key*)key;
+	r->id = 0;
+}
+
 struct rrset_cache* rrset_cache_create(struct config_file* cfg, 
 	struct alloc_cache* alloc)
 {
@@ -57,6 +64,7 @@ struct rrset_cache* rrset_cache_create(struct config_file* cfg,
 	struct rrset_cache *r = (struct rrset_cache*)slabhash_create(slabs,
 		startarray, maxmem, ub_rrset_sizefunc, ub_rrset_compare,
 		ub_rrset_key_delete, rrset_data_delete, alloc);
+	slabhash_setmarkdel(&r->table, &rrset_markdel);
 	return r;
 }
 
@@ -65,6 +73,7 @@ void rrset_cache_delete(struct rrset_cache* r)
 	if(!r) 
 		return;
 	slabhash_delete(&r->table);
+	/* slabhash delete also does free(r), since table is first in struct*/
 }
 
 struct rrset_cache* rrset_cache_adjust(struct rrset_cache *r, 

services/cache/rrset.h

@@ -207,4 +207,7 @@ void rrset_update_sec_status(struct rrset_cache* r,
 void rrset_check_sec_status(struct rrset_cache* r, 
 	struct ub_packed_rrset_key* rrset);
 
+/** mark rrset to be deleted, set id=0 */
+void rrset_markdel(void* key);
+
 #endif /* SERVICES_CACHE_RRSET_H */

services/listen_dnsport.c

@@ -86,11 +86,13 @@ verbose_print_addr(struct addrinfo *addr)
 }
 
 int
-create_udp_sock(struct addrinfo *addr)
+create_udp_sock(struct addrinfo *addr, int v6only)
 {
 	int s;
-# if defined(IPV6_V6ONLY)
+# if defined(IPV6_USE_MIN_MTU)
 	int on=1;
+# else
+	(void)v6only;
 # endif
 	verbose_print_addr(addr);
 	if((s = socket(addr->ai_family, addr->ai_socktype, 0)) == -1) {
@@ -99,11 +101,14 @@ create_udp_sock(struct addrinfo *addr)
 	}
 	if(addr->ai_family == AF_INET6) {
 # if defined(IPV6_V6ONLY)
-		if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, 
-			&on, (socklen_t)sizeof(on)) < 0) {
-			log_err("setsockopt(..., IPV6_V6ONLY, ...) failed: %s",
-				strerror(errno));
-			return -1;
+		if(v6only) {
+			int val=(v6only==2)?0:1;
+			if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, 
+				&val, (socklen_t)sizeof(val)) < 0) {
+				log_err("setsockopt(..., IPV6_V6ONLY"
+					", ...) failed: %s", strerror(errno));
+				return -1;
+			}
 		}
 # endif
 # if defined(IPV6_USE_MIN_MTU)
@@ -135,10 +140,11 @@ create_udp_sock(struct addrinfo *addr)
 /**
  * Create and bind TCP listening socket
  * @param addr: address info ready to make socket.
+ * @param v6only: enable ip6 only flag on ip6 sockets.
  * @return: the socket. -1 on error.
  */
 static int
-create_tcp_accept_sock(struct addrinfo *addr)
+create_tcp_accept_sock(struct addrinfo *addr, int v6only)
 {
 	int s, flag;
 #if defined(SO_REUSEADDR) || defined(IPV6_V6ONLY)
@@ -158,7 +164,7 @@ create_tcp_accept_sock(struct addrinfo *addr)
 	}
 #endif /* SO_REUSEADDR */
 #if defined(IPV6_V6ONLY)
-	if(addr->ai_family == AF_INET6) {
+	if(addr->ai_family == AF_INET6 && v6only) {
 		if(setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, 
 			&on, (socklen_t)sizeof(on)) < 0) {
 			log_err("setsockopt(..., IPV6_V6ONLY, ...) failed: %s",
@@ -166,6 +172,8 @@ create_tcp_accept_sock(struct addrinfo *addr)
 			return -1;
 		}
 	}
+#else
+	(void)v6only;
 #endif /* IPV6_V6ONLY */
 	if(bind(s, (struct sockaddr*)addr->ai_addr, addr->ai_addrlen) != 0) {
 		log_err("can't bind socket: %s", strerror(errno));
@@ -192,7 +200,7 @@ create_tcp_accept_sock(struct addrinfo *addr)
  */
 static int
 make_sock(int stype, const char* ifname, const char* port, 
-	struct addrinfo *hints)
+	struct addrinfo *hints, int v6only)
 {
 	struct addrinfo *res = NULL;
 	int r, s;
@@ -204,8 +212,8 @@ make_sock(int stype, const char* ifname, const char* port,
 		return -1;
 	}
 	if(stype == SOCK_DGRAM)
-		s = create_udp_sock(res);
-	else	s = create_tcp_accept_sock(res);
+		s = create_udp_sock(res, v6only);
+	else	s = create_tcp_accept_sock(res, v6only);
 	freeaddrinfo(res);
 	return s;
 }
@@ -214,11 +222,11 @@ make_sock(int stype, const char* ifname, const char* port,
  * Add port to open ports list.
  * @param list: list head. changed.
  * @param s: fd.
- * @param is_udp: if fd is UDP.
+ * @param ftype: if fd is UDP.
  * @return false on failure. list in unchanged then.
  */
 static int
-port_insert(struct listen_port** list, int s, int is_udp)
+port_insert(struct listen_port** list, int s, enum listen_type ftype)
 {
 	struct listen_port* item = (struct listen_port*)malloc(
 		sizeof(struct listen_port));
@@ -226,14 +234,67 @@ port_insert(struct listen_port** list, int s, int is_udp)
 		return 0;
 	item->next = *list;
 	item->fd = s;
-	item->is_udp = is_udp;
+	item->ftype = ftype;
 	*list = item;
 	return 1;
 }
 
+/** set fd to receive source address packet info */
+static int
+set_recvpktinfo(int s, int family) 
+{
+	int on = 1;
+	if(family == AF_INET6) {
+#           ifdef IPV6_RECVPKTINFO
+		if(setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO,
+			&on, (socklen_t)sizeof(on)) < 0) {
+			log_err("setsockopt(..., IPV6_RECVPKTINFO, ...) failed: %s",
+				strerror(errno));
+			return 0;
+		}
+#           elif defined(IPV6_PKTINFO)
+		if(setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO,
+			&on, (socklen_t)sizeof(on)) < 0) {
+			log_err("setsockopt(..., IPV6_PKTINFO, ...) failed: %s",
+				strerror(errno));
+			return 0;
+		}
+#           else
+		log_err("no IPV6_RECVPKTINFO and no IPV6_PKTINFO option, please "
+			"disable interface-automatic in config");
+		return 0;
+#           endif /* defined IPV6_RECVPKTINFO */
+
+	} else if(family == AF_INET) {
+#           ifdef IP_RECVDSTADDR
+		if(setsockopt(s, IPPROTO_IP, IP_RECVDSTADDR,
+			&on, (socklen_t)sizeof(on)) < 0) {
+			log_err("setsockopt(..., IP_RECVDSTADDR, ...) failed: %s",
+				strerror(errno));
+			return 0;
+		}
+#           elif defined(IP_PKTINFO)
+		if(setsockopt(s, IPPROTO_IP, IP_PKTINFO,
+			&on, (socklen_t)sizeof(on)) < 0) {
+			log_err("setsockopt(..., IP_PKTINFO, ...) failed: %s",
+				strerror(errno));
+			return 0;
+		}
+#           else
+		log_err("no IP_RECVDSTADDR or IP_PKTINFO option, please disable "
+			"interface-automatic in config");
+		return 0;
+#           endif /* IP_PKTINFO */
+
+	}
+	return 1;
+}
+
 /**
  * Helper for ports_open. Creates one interface (or NULL for default).
  * @param ifname: The interface ip address.
+ * @param do_auto: use automatic interface detection.
+ * 	If enabled, then ifname must be the wildcard name.
  * @param do_udp: if udp should be used.
  * @param do_tcp: if udp should be used.
  * @param hints: for getaddrinfo. family and flags have to be set by caller.
@@ -242,25 +303,36 @@ port_insert(struct listen_port** list, int s, int is_udp)
  * @return: returns false on error.
  */
 static int
-ports_create_if(const char* ifname, int do_udp, int do_tcp, 
+ports_create_if(const char* ifname, int do_auto, int do_udp, int do_tcp, 
 	struct addrinfo *hints, const char* port, struct listen_port** list)
 {
 	int s;
 	if(!do_udp && !do_tcp)
 		return 0;
-	if(do_udp) {
-		if((s = make_sock(SOCK_DGRAM, ifname, port, hints)) == -1)
+	if(do_auto) {
+		if((s = make_sock(SOCK_DGRAM, ifname, port, hints, 1)) == -1)
 			return 0;
-		if(!port_insert(list, s, 1)) {
+		/* getting source addr packet info is highly non-portable */
+		if(!set_recvpktinfo(s, hints->ai_family))
+			return 0;
+		if(!port_insert(list, s, listen_type_udpancil)) {
+			close(s);
+			return 0;
+		}
+	} else if(do_udp) {
+		/* regular udp socket */
+		if((s = make_sock(SOCK_DGRAM, ifname, port, hints, 1)) == -1)
+			return 0;
+		if(!port_insert(list, s, listen_type_udp)) {
 			close(s);
 			return 0;
 		}
 	}
 	if(do_tcp) {
-		if((s = make_sock(SOCK_STREAM, ifname, port, hints)) == -1) {
+		if((s = make_sock(SOCK_STREAM, ifname, port, hints, 1)) == -1) {
 			return 0;
 		}
-		if(!port_insert(list, s, 0)) {
+		if(!port_insert(list, s, listen_type_tcp)) {
 			close(s);
 			return 0;
 		}
@@ -306,11 +378,15 @@ listen_create(struct comm_base* base, struct listen_port* ports,
 	/* create comm points as needed */
 	while(ports) {
 		struct comm_point* cp = NULL;
-		if(ports->is_udp) 
+		if(ports->ftype == listen_type_udp) 
 			cp = comm_point_create_udp(base, ports->fd, 
 				front->udp_buff, cb, cb_arg);
-		else 	cp = comm_point_create_tcp(base, ports->fd, 
+		else if(ports->ftype == listen_type_tcp)
+			cp = comm_point_create_tcp(base, ports->fd, 
 				tcp_accept_count, bufsize, cb, cb_arg);
+		else if(ports->ftype == listen_type_udpancil) 
+			cp = comm_point_create_udp_ancil(base, ports->fd, 
+				front->udp_buff, cb, cb_arg);
 		if(!cp) {
 			log_err("can't create commpoint");	
 			listen_delete(front);
@@ -383,12 +459,13 @@ listening_ports_open(struct config_file* cfg)
 	struct listen_port* list = NULL;
 	struct addrinfo hints;
 	int i, do_ip4, do_ip6;
-	int do_tcp;
+	int do_tcp, do_auto;
 	char portbuf[32];
 	snprintf(portbuf, sizeof(portbuf), "%d", cfg->port);
 	do_ip4 = cfg->do_ip4;
 	do_ip6 = cfg->do_ip6;
 	do_tcp = cfg->do_tcp;
+	do_auto = cfg->if_automatic && cfg->do_udp;
 	if(cfg->incoming_num_tcp == 0)
 		do_tcp = 0;
 
@@ -405,11 +482,16 @@ listening_ports_open(struct config_file* cfg)
 	if(!do_ip4 && !do_ip6) {
 		return NULL;
 	}
+	if(do_auto && (!do_ip4 || !do_ip6)) {
+		log_warn("interface_automatic option does not work when IP4 or IP6 is not enabled. Disabling option.");
+		do_auto = 0;
+	}
 	/* create ip4 and ip6 ports so that return addresses are nice. */
-	if(cfg->num_ifs == 0) {
+	if(do_auto || cfg->num_ifs == 0) {
 		if(do_ip6) {
 			hints.ai_family = AF_INET6;
-			if(!ports_create_if("::1", cfg->do_udp, do_tcp, 
+			if(!ports_create_if(do_auto?"::0":"::1", 
+				do_auto, cfg->do_udp, do_tcp, 
 				&hints, portbuf, &list)) {
 				listening_ports_free(list);
 				return NULL;
@@ -417,7 +499,8 @@ listening_ports_open(struct config_file* cfg)
 		}
 		if(do_ip4) {
 			hints.ai_family = AF_INET;
-			if(!ports_create_if("127.0.0.1", cfg->do_udp, do_tcp, 
+			if(!ports_create_if(do_auto?"0.0.0.0":"127.0.0.1", 
+				do_auto, cfg->do_udp, do_tcp, 
 				&hints, portbuf, &list)) {
 				listening_ports_free(list);
 				return NULL;
@@ -428,7 +511,7 @@ listening_ports_open(struct config_file* cfg)
 			if(!do_ip6)
 				continue;
 			hints.ai_family = AF_INET6;
-			if(!ports_create_if(cfg->ifs[i], cfg->do_udp, 
+			if(!ports_create_if(cfg->ifs[i], 0, cfg->do_udp, 
 				do_tcp, &hints, portbuf, &list)) {
 				listening_ports_free(list);
 				return NULL;
@@ -437,7 +520,7 @@ listening_ports_open(struct config_file* cfg)
 			if(!do_ip4)
 				continue;
 			hints.ai_family = AF_INET;
-			if(!ports_create_if(cfg->ifs[i], cfg->do_udp, 
+			if(!ports_create_if(cfg->ifs[i], 0, cfg->do_udp, 
 				do_tcp, &hints, portbuf, &list)) {
 				listening_ports_free(list);
 				return NULL;

services/listen_dnsport.h

@@ -74,6 +74,18 @@ struct listen_list {
 	struct comm_point* com;
 };
 
+/**
+ * type of ports
+ */
+enum listen_type {
+	/** udp type */
+	listen_type_udp,
+	/** tcp type */
+	listen_type_tcp,
+	/** udp ipv6 (v4mapped) for use with ancillary data */
+	listen_type_udpancil
+};
+
 /**
  * Single linked list to store shared ports that have been 
  * opened for use by all threads.
@@ -84,7 +96,7 @@ struct listen_port {
 	/** file descriptor, open and ready for use */
 	int fd;
 	/** type of file descriptor, udp or tcp */
-	int is_udp;
+	enum listen_type ftype;
 };
 
 /**
@@ -154,8 +166,10 @@ size_t listen_get_mem(struct listen_dnsport* listen);
 /**
  * Create and bind nonblocking UDP socket
  * @param addr: address info ready to make socket.
+ * @param v6only: if enabled, IP6 sockets get IP6ONLY option set.
+ * 	if enabled with value 2 IP6ONLY option is disabled.
  * @return: the socket. -1 on error.
  */
-int create_udp_sock(struct addrinfo* addr);
+int create_udp_sock(struct addrinfo* addr, int v6only);
 
 #endif /* LISTEN_DNSPORT_H */

services/localzone.h

@@ -0,0 +1,215 @@
+/*
+ * services/localzone.h - local zones authority service.
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to enable local zone authority service.
+ */
+
+#ifndef SERVICES_LOCALZONE_H
+#define SERVICES_LOCALZONE_H
+#include "util/rbtree.h"
+struct ub_packed_rrset_key;
+struct regional;
+struct config_file;
+struct edns_data;
+struct query_info;
+
+/**
+ * Local zone type
+ * This type determines processing for queries that did not match
+ * local-data directly.
+ */
+enum localzone_type {
+	/** drop query */
+	local_zone_deny = 0,
+	/** answer with error */
+	local_zone_refuse,
+	/** answer nxdomain or nodata */
+	local_zone_static,
+	/** resolve normally */
+	local_zone_transparent,
+	/** answer with data at zone apex */
+	local_zone_redirect,
+	/** remove default AS112 blocking contents for zone
+	 * nodefault is used in config not during service. */
+	local_zone_nodefault
+};
+
+/**
+ * Authoritative local zones storage, shared.
+ * This tree is fixed at startup, so, readonly, no locks or mutexes necessary.
+ */
+struct local_zones {
+	/** rbtree of struct local_zone */
+	rbtree_t ztree;
+};
+
+/**
+ * Local zone. A locally served authoritative zone.
+ */
+struct local_zone {
+	/** rbtree node, key is name and class */
+	rbnode_t node;
+	/** parent zone, if any. */
+	struct local_zone* parent;
+
+	/** zone name, in uncompressed wireformat */
+	uint8_t* name;
+	/** length of zone name */
+	size_t namelen;
+	/** number of labels in zone name */
+	int namelabs;
+	/** the class of this zone. 
+	 * uses 'dclass' to not conflict with c++ keyword class. */
+	uint16_t dclass;
+
+	/** how to process zone */
+	enum localzone_type type;
+
+	/** in this region the zone's data is allocated.
+	 * the struct local_zone itself is malloced. */
+	struct regional* region;
+	/** local data for this zone
+	 * rbtree of struct local_data */
+	rbtree_t data;
+	/** if data contains zone apex SOA data, this is a ptr to it. */
+	struct ub_packed_rrset_key* soa;
+};
+
+/**
+ * Local data. One domain name, and the RRs to go with it.
+ */
+struct local_data {
+	/** rbtree node, key is name only */
+	rbnode_t node;
+	/** domain name */
+	uint8_t* name;
+	/** length of name */
+	size_t namelen;
+	/** number of labels in name */
+	int namelabs;
+	/** the data rrsets, with different types, linked list.
+	 * If this list is NULL, the node is an empty non-terminal. */
+	struct local_rrset* rrsets;
+};
+
+/**
+ * A local data RRset
+ */
+struct local_rrset {
+	/** next in list */
+	struct local_rrset* next;
+	/** RRset data item */
+	struct ub_packed_rrset_key* rrset;
+};
+
+/**
+ * Create local zones storage
+ * @return new struct or NULL on error.
+ */
+struct local_zones* local_zones_create();
+
+/**
+ * Delete local zones storage
+ * @param zones: to delete.
+ */
+void local_zones_delete(struct local_zones* zones);
+
+/**
+ * Apply config settings; setup the local authoritative data. 
+ * @param zones: is set up.
+ * @param cfg: config data.
+ * @return false on error.
+ */
+int local_zones_apply_cfg(struct local_zones* zones, struct config_file* cfg);
+
+/**
+ * Compare two local_zone entries in rbtree. Sort hierarchical but not
+ * canonical
+ * @param z1: zone 1
+ * @param z2: zone 2
+ * @return: -1, 0, +1 comparison value.
+ */
+int local_zone_cmp(const void* z1, const void* z2);
+
+/**
+ * Compare two local_data entries in rbtree. Sort canonical.
+ * @param d1: data 1
+ * @param d2: data 2
+ * @return: -1, 0, +1 comparison value.
+ */
+int local_data_cmp(const void* d1, const void* d2);
+
+/**
+ * Delete one zone
+ * @param z: to delete.
+ */
+void local_zone_delete(struct local_zone* z);
+
+/**
+ * Lookup zone that contains the given name, class.
+ * @param zones: the zones tree
+ * @param name: dname to lookup
+ * @param len: length of name.
+ * @param labs: labelcount of name.
+ * @param dclass: class to lookup.
+ * @return closest local_zone or NULL if no covering zone is found.
+ */
+struct local_zone* local_zones_lookup(struct local_zones* zones, 
+	uint8_t* name, size_t len, int labs, uint16_t dclass);
+
+/**
+ * Debug helper. Print all zones 
+ * @param zones: the zones tree
+ */
+void local_zones_print(struct local_zones* zones);
+
+/**
+ * Answer authoritatively for local zones.
+ * @param zones: the stored zones (shared, read only).
+ * @param qinfo: query info (parsed).
+ * @param edns: edns info (parsed).
+ * @param buf: buffer with query ID and flags, also for reply.
+ * @param temp: temporary storage region.
+ * @return true if answer is in buffer. false if query is not answered 
+ * by authority data. If the reply should be dropped altogether, the return 
+ * value is true, but the buffer is cleared (empty).
+ */
+int local_zones_answer(struct local_zones* zones, struct query_info* qinfo,
+	struct edns_data* edns, ldns_buffer* buf, struct regional* temp);
+
+#endif /* SERVICES_LOCALZONE_H */

services/mesh.c

@@ -88,8 +88,7 @@ mesh_state_ref_compare(const void* ap, const void* bp)
 }
 
 struct mesh_area* 
-mesh_create(int num_modules, struct module_func_block** modfunc,
-	struct module_env* env)
+mesh_create(struct module_stack* stack, struct module_env* env)
 {
 	struct mesh_area* mesh = calloc(1, sizeof(struct mesh_area));
 	if(!mesh) {
@@ -102,8 +101,7 @@ mesh_create(int num_modules, struct module_func_block** modfunc,
 		log_err("mesh area alloc: out of memory");
 		return NULL;
 	}
-	mesh->num_modules = num_modules;
-	mesh->modfunc = modfunc;
+	mesh->mods = *stack;
 	mesh->env = env;
 	rbtree_init(&mesh->run, &mesh_state_compare);
 	rbtree_init(&mesh->all, &mesh_state_compare);
@@ -157,9 +155,9 @@ void mesh_new_client(struct mesh_area* mesh, struct query_info* qinfo,
 		mesh->num_detached_states++;
 		added = 1;
 	}
-	if(!s->reply_list && s->super_set.count == 0)
+	if(!s->reply_list && !s->cb_list && s->super_set.count == 0)
 		was_detached = 1;
-	if(!s->reply_list)
+	if(!s->reply_list && !s->cb_list)
 		was_noreply = 1;
 	/* add reply to s */
 	if(!mesh_state_add_reply(s, edns, rep, qid, qflags)) {
@@ -184,6 +182,52 @@ void mesh_new_client(struct mesh_area* mesh, struct query_info* qinfo,
 		mesh_run(mesh, s, module_event_new, NULL);
 }
 
+int 
+mesh_new_callback(struct mesh_area* mesh, struct query_info* qinfo,
+	uint16_t qflags, struct edns_data* edns, ldns_buffer* buf, 
+	uint16_t qid, mesh_cb_func_t cb, void* cb_arg)
+{
+	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags, 0);
+	int was_detached = 0;
+	int was_noreply = 0;
+	int added = 0;
+	/* see if it already exists, if not, create one */
+	if(!s) {
+		struct rbnode_t* n;
+		s = mesh_state_create(mesh->env,qinfo, qflags, 0);
+		if(!s) {
+			return 0;
+		}
+		n = rbtree_insert(&mesh->all, &s->node);
+		log_assert(n != NULL);
+		/* set detached (it is now) */
+		mesh->num_detached_states++;
+		added = 1;
+	}
+	if(!s->reply_list && !s->cb_list && s->super_set.count == 0)
+		was_detached = 1;
+	if(!s->reply_list && !s->cb_list)
+		was_noreply = 1;
+	/* add reply to s */
+	if(!mesh_state_add_cb(s, edns, buf, cb, cb_arg, qid, qflags)) {
+			if(added)
+				mesh_state_delete(&s->s);
+			return 0;
+	}
+	/* update statistics */
+	if(was_detached) {
+		log_assert(mesh->num_detached_states > 0);
+		mesh->num_detached_states--;
+	}
+	if(was_noreply) {
+		mesh->num_reply_states ++;
+	}
+	mesh->num_reply_addrs++;
+	if(added)
+		mesh_run(mesh, s, module_event_new, NULL);
+	return 1;
+}
+
 void mesh_report_reply(struct mesh_area* mesh, struct outbound_entry* e,
         int is_ok, struct comm_reply* reply)
 {
@@ -237,7 +281,7 @@ mesh_state_create(struct module_env* env, struct query_info* qinfo,
 	mstate->s.env = env;
 	mstate->s.mesh_info = mstate;
 	/* init modules */
-	for(i=0; i<env->mesh->num_modules; i++) {
+	for(i=0; i<env->mesh->mods.num; i++) {
 		mstate->s.minfo[i] = NULL;
 		mstate->s.ext_state[i] = module_state_initial;
 	}
@@ -253,9 +297,9 @@ mesh_state_cleanup(struct mesh_state* mstate)
 		return;
 	/* de-init modules */
 	mesh = mstate->s.env->mesh;
-	for(i=0; i<mesh->num_modules; i++) {
-		log_assert(fptr_whitelist_mod_clear(mesh->modfunc[i]->clear));
-		(*mesh->modfunc[i]->clear)(&mstate->s, i);
+	for(i=0; i<mesh->mods.num; i++) {
+		log_assert(fptr_whitelist_mod_clear(mesh->mods.mod[i]->clear));
+		(*mesh->mods.mod[i]->clear)(&mstate->s, i);
 		mstate->s.minfo[i] = NULL;
 		mstate->s.ext_state[i] = module_finished;
 	}
@@ -273,11 +317,12 @@ mesh_state_delete(struct module_qstate* qstate)
 	mstate = qstate->mesh_info;
 	mesh = mstate->s.env->mesh;
 	mesh_detach_subs(&mstate->s);
-	if(!mstate->reply_list && mstate->super_set.count == 0) {
+	if(!mstate->reply_list && !mstate->cb_list
+		&& mstate->super_set.count == 0) {
 		log_assert(mesh->num_detached_states > 0);
 		mesh->num_detached_states--;
 	}
-	if(mstate->reply_list) {
+	if(mstate->reply_list || mstate->cb_list) {
 		log_assert(mesh->num_reply_states > 0);
 		mesh->num_reply_states--;
 	}
@@ -301,7 +346,8 @@ void mesh_detach_subs(struct module_qstate* qstate)
 	RBTREE_FOR(ref, struct mesh_state_ref*, &qstate->mesh_info->sub_set) {
 		n = rbtree_delete(&ref->s->super_set, &lookup);
 		log_assert(n != NULL); /* must have been present */
-		if(!ref->s->reply_list && ref->s->super_set.count == 0) {
+		if(!ref->s->reply_list && !ref->s->cb_list
+			&& ref->s->super_set.count == 0) {
 			mesh->num_detached_states++;
 			log_assert(mesh->num_detached_states + 
 				mesh->num_reply_states <= mesh->all.count);
@@ -336,7 +382,7 @@ int mesh_attach_sub(struct module_qstate* qstate, struct query_info* qinfo,
 		*newq = NULL;
 	if(!mesh_state_attachment(qstate->mesh_info, sub))
 		return 0;
-	if(!sub->reply_list && sub->super_set.count == 1) {
+	if(!sub->reply_list && !sub->cb_list && sub->super_set.count == 1) {
 		/* it used to be detached, before this one got added */
 		log_assert(mesh->num_detached_states > 0);
 		mesh->num_detached_states--;
@@ -415,6 +461,49 @@ timeval_divide(struct timeval* avg, struct timeval* sum, size_t d)
 #endif
 }
 
+/**
+ * callback results to mesh cb entry
+ * @param m: mesh state to send it for.
+ * @param rcode: if not 0, error code.
+ * @param rep: reply to send (or NULL if rcode is set).
+ * @param r: callback entry
+ */
+static void
+mesh_do_callback(struct mesh_state* m, int rcode, struct reply_info* rep,
+	struct mesh_cb* r)
+{
+	int secure;
+	/* bogus messages are not made into servfail, sec_status passed 
+	 * to the callback function */
+	if(rep && rep->security == sec_status_secure)
+		secure = 1;
+	else	secure = 0;
+	if(!rep && rcode == LDNS_RCODE_NOERROR)
+		rcode = LDNS_RCODE_SERVFAIL;
+	/* send the reply */
+	if(rcode) {
+		(*r->cb)(r->cb_arg, rcode, r->buf, sec_status_unchecked);
+	} else {
+		size_t udp_size = r->edns.udp_size;
+		ldns_buffer_clear(r->buf);
+		r->edns.edns_version = EDNS_ADVERTISED_VERSION;
+		r->edns.udp_size = EDNS_ADVERTISED_SIZE;
+		r->edns.ext_rcode = 0;
+		r->edns.bits &= EDNS_DO;
+		if(!reply_info_answer_encode(&m->s.qinfo, rep, r->qid, 
+			r->qflags, r->buf, 0, 1, 
+			m->s.env->scratch, udp_size, &r->edns, 
+			(int)(r->edns.bits & EDNS_DO), secure)) 
+		{
+			(*r->cb)(r->cb_arg, LDNS_RCODE_SERVFAIL, r->buf,
+				sec_status_unchecked);
+		}
+		else	(*r->cb)(r->cb_arg, LDNS_RCODE_NOERROR, r->buf,
+				rep->security);
+	}
+	m->s.env->mesh->num_reply_addrs--;
+}
+
 /**
  * Send reply to mesh reply entry
  * @param m: mesh state to send it for.
@@ -436,6 +525,8 @@ mesh_send_reply(struct mesh_state* m, int rcode, struct reply_info* rep,
 	if(rep && rep->security == sec_status_secure)
 		secure = 1;
 	else	secure = 0;
+	if(!rep && rcode == LDNS_RCODE_NOERROR)
+		rcode = LDNS_RCODE_SERVFAIL;
 	/* send the reply */
 	if(rcode) {
 		error_encode(r->query_reply.c->buffer, rcode, &m->s.qinfo,
@@ -477,11 +568,15 @@ mesh_send_reply(struct mesh_state* m, int rcode, struct reply_info* rep,
 void mesh_query_done(struct mesh_state* mstate)
 {
 	struct mesh_reply* r;
+	struct mesh_cb* c;
 	struct reply_info* rep = (mstate->s.return_msg?
 		mstate->s.return_msg->rep:NULL);
 	for(r = mstate->reply_list; r; r = r->next) {
 		mesh_send_reply(mstate, mstate->s.return_rcode, rep, r);
 	}
+	for(c = mstate->cb_list; c; c = c->next) {
+		mesh_do_callback(mstate, mstate->s.return_rcode, rep, c);
+	}
 }
 
 void mesh_walk_supers(struct mesh_area* mesh, struct mesh_state* mstate)
@@ -493,8 +588,8 @@ void mesh_walk_supers(struct mesh_area* mesh, struct mesh_state* mstate)
 		(void)rbtree_insert(&mesh->run, &ref->s->run_node);
 		/* callback the function to inform super of result */
 		log_assert(fptr_whitelist_mod_inform_super(
-			mesh->modfunc[ref->s->s.curmod]->inform_super));
-		(*mesh->modfunc[ref->s->s.curmod]->inform_super)(&mstate->s, 
+			mesh->mods.mod[ref->s->s.curmod]->inform_super));
+		(*mesh->mods.mod[ref->s->s.curmod]->inform_super)(&mstate->s, 
 			ref->s->s.curmod, &ref->s->s);
 	}
 }
@@ -514,6 +609,26 @@ struct mesh_state* mesh_area_find(struct mesh_area* mesh,
 	return result;
 }
 
+int mesh_state_add_cb(struct mesh_state* s, struct edns_data* edns,
+        ldns_buffer* buf, mesh_cb_func_t cb, void* cb_arg,
+	uint16_t qid, uint16_t qflags)
+{
+	struct mesh_cb* r = regional_alloc(s->s.region, 
+		sizeof(struct mesh_cb));
+	if(!r)
+		return 0;
+	r->buf = buf;
+	r->cb = cb;
+	r->cb_arg = cb_arg;
+	r->edns = *edns;
+	r->qid = qid;
+	r->qflags = qflags;
+	r->next = s->cb_list;
+	s->cb_list = r;
+	return 1;
+
+}
+
 int mesh_state_add_reply(struct mesh_state* s, struct edns_data* edns,
         struct comm_reply* rep, uint16_t qid, uint16_t qflags)
 {
@@ -558,16 +673,16 @@ mesh_continue(struct mesh_area* mesh, struct mesh_state* mstate,
 	if(mstate->num_activated > MESH_MAX_ACTIVATION) {
 		/* module is looping. Stop it. */
 		log_err("internal error: looping module stopped");
-		log_query_info(VERB_DETAIL, "pass error for qstate",
+		log_query_info(VERB_QUERY, "pass error for qstate",
 			&mstate->s.qinfo);
 		s = module_error;
 	}
 	if(s == module_wait_module) {
 		/* start next module */
 		mstate->s.curmod++;
-		if(mesh->num_modules == mstate->s.curmod) {
+		if(mesh->mods.num == mstate->s.curmod) {
 			log_err("Cannot pass to next module; at last module");
-			log_query_info(VERB_DETAIL, "pass error for qstate",
+			log_query_info(VERB_QUERY, "pass error for qstate",
 				&mstate->s.qinfo);
 			mstate->s.curmod--;
 			return mesh_continue(mesh, mstate, module_error, ev);
@@ -602,8 +717,8 @@ void mesh_run(struct mesh_area* mesh, struct mesh_state* mstate,
 	while(mstate) {
 		/* run the module */
 		log_assert(fptr_whitelist_mod_operate(
-			mesh->modfunc[mstate->s.curmod]->operate));
-		(*mesh->modfunc[mstate->s.curmod]->operate)
+			mesh->mods.mod[mstate->s.curmod]->operate));
+		(*mesh->mods.mod[mstate->s.curmod]->operate)
 			(&mstate->s, ev, mstate->s.curmod, e);
 
 		/* examine results */
@@ -611,7 +726,7 @@ void mesh_run(struct mesh_area* mesh, struct mesh_state* mstate,
 		regional_free_all(mstate->s.env->scratch);
 		s = mstate->s.ext_state[mstate->s.curmod];
 		verbose(VERB_ALGO, "mesh_run: %s module exit state is %s", 
-			mesh->modfunc[mstate->s.curmod]->name, strextstate(s));
+			mesh->mods.mod[mstate->s.curmod]->name, strextstate(s));
 		e = NULL;
 		if(mesh_continue(mesh, mstate, s, &ev))
 			continue;
@@ -637,13 +752,15 @@ mesh_log_list(struct mesh_area* mesh)
 	struct mesh_state* m;
 	int num = 0;
 	RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
-		snprintf(buf, sizeof(buf), "%d%s%s%s%s%s mod%d %s", 
+		snprintf(buf, sizeof(buf), "%d%s%s%s%s%s mod%d %s%s", 
 			num++, (m->s.is_priming)?"p":"",  /* prime */
 			(m->s.query_flags&BIT_RD)?"RD":"",
 			(m->s.query_flags&BIT_CD)?"CD":"",
 			(m->super_set.count==0)?"d":"", /* detached */
 			(m->sub_set.count!=0)?"c":"",  /* children */
-			m->s.curmod, (m->reply_list)?"hr":"nr"); /*hasreply*/
+			m->s.curmod, (m->reply_list)?"rep":"", /*hasreply*/
+			(m->cb_list)?"cb":"" /* callbacks */
+			); 
 		log_query_info(VERB_ALGO, buf, &m->s.qinfo);
 	}
 }
@@ -651,23 +768,35 @@ mesh_log_list(struct mesh_area* mesh)
 void 
 mesh_stats(struct mesh_area* mesh, const char* str)
 {
-	log_info("%s %u states (%u with reply, %u detached), "
-		"%u waiting replies", str, (unsigned)mesh->all.count, 
+	verbose(VERB_DETAIL, "%s %u recursion states (%u with reply, "
+		"%u detached), %u waiting replies, %u recursion replies "
+		"sent", str, (unsigned)mesh->all.count, 
 		(unsigned)mesh->num_reply_states,
 		(unsigned)mesh->num_detached_states,
-		(unsigned)mesh->num_reply_addrs);
+		(unsigned)mesh->num_reply_addrs,
+		(unsigned)mesh->replies_sent);
 	if(mesh->replies_sent > 0) {
 		struct timeval avg;
 		timeval_divide(&avg, &mesh->replies_sum_wait, 
 			mesh->replies_sent);
-		log_info("sent %u replies, with average wait "
-			"of %d.%6.6d sec", (unsigned)mesh->replies_sent,
-			(int)avg.tv_sec, (int)avg.tv_usec);
-		log_info("histogram of reply wait times");
-		timehist_log(mesh->histogram);
+		log_info("average recursion processing time "
+			"%d.%6.6d sec", (int)avg.tv_sec, (int)avg.tv_usec);
+		log_info("histogram of recursion processing times");
+		timehist_log(mesh->histogram, "recursions");
 	}
 }
 
+void 
+mesh_stats_clear(struct mesh_area* mesh)
+{
+	if(!mesh)
+		return;
+	mesh->replies_sent = 0;
+	mesh->replies_sum_wait.tv_sec = 0;
+	mesh->replies_sum_wait.tv_usec = 0;
+	timehist_clear(mesh->histogram);
+}
+
 size_t 
 mesh_get_mem(struct mesh_area* mesh)
 {

services/mesh.h

@@ -50,8 +50,10 @@
 #include "util/netevent.h"
 #include "util/data/msgparse.h"
 #include "util/module.h"
+#include "services/modstack.h"
 struct mesh_state;
 struct mesh_reply;
+struct mesh_cb;
 struct query_info;
 struct reply_info;
 struct outbound_entry;
@@ -67,10 +69,8 @@ struct timehist;
  * Mesh of query states
  */
 struct mesh_area {
-	/** the number of modules */
-	int num_modules;
-	/** the module callbacks, array of num_modules length (ref only) */
-	struct module_func_block** modfunc;
+	/** active module stack */
+	struct module_stack mods;
 	/** environment for new states */
 	struct module_env* env;
 
@@ -117,6 +117,8 @@ struct mesh_state {
 	struct module_qstate s;
 	/** the list of replies to clients for the results */
 	struct mesh_reply* reply_list;
+	/** the list of callbacks for the results */
+	struct mesh_cb* cb_list;
 	/** set of superstates (that want this state's result) 
 	 * contains struct mesh_state_ref* */
 	rbtree_t super_set;
@@ -156,18 +158,45 @@ struct mesh_reply {
 	uint16_t qflags;
 };
 
+/** 
+ * Mesh result callback func.
+ * called as func(cb_arg, rcode, buffer_with_reply, security);
+ * */
+typedef void (*mesh_cb_func_t)(void*, int, ldns_buffer*, enum sec_status);
+
+/**
+ * Callback to result routine
+ */
+struct mesh_cb {
+	/** next in list */
+	struct mesh_cb* next;
+	/** edns data from query */
+	struct edns_data edns;
+	/** id of query, in network byteorder. */
+	uint16_t qid;
+	/** flags of query, for reply flags */
+	uint16_t qflags;
+	/** buffer for reply */
+	ldns_buffer* buf;
+
+	/** callback routine for results. if rcode != 0 buf has message.
+	 * called as cb(cb_arg, rcode, buf);
+	 */
+	mesh_cb_func_t cb;
+	/** user arg for callback */
+	void* cb_arg;
+};
+
 /* ------------------- Functions for worker -------------------- */
 
 /**
  * Allocate mesh, to empty.
- * @param num_modules: number of modules that are present.
- * @param modfunc: array passed (alloced and deleted by caller), that has
- * 	num_modules function callbacks for the modules.
+ * @param stack: module stack to activate, copied (as readonly reference).
  * @param env: environment for new queries.
  * @return mesh: the new mesh or NULL on error.
  */
-struct mesh_area* mesh_create(int num_modules, 
-	struct module_func_block** modfunc, struct module_env* env);
+struct mesh_area* mesh_create(struct module_stack* stack, 
+	struct module_env* env);
 
 /**
  * Delete mesh, and all query states and replies in it.
@@ -191,6 +220,25 @@ void mesh_new_client(struct mesh_area* mesh, struct query_info* qinfo,
 	uint16_t qflags, struct edns_data* edns, struct comm_reply* rep, 
 	uint16_t qid);
 
+/**
+ * New query with callback. Create new query state if needed, and
+ * add mesh_cb to it. 
+ * Will run the mesh area queries to process if a new query state is created.
+ *
+ * @param mesh: the mesh.
+ * @param qinfo: query from client.
+ * @param qflags: flags from client query.
+ * @param edns: edns data from client query.
+ * @param buf: buffer for reply contents.
+ * @param qid: query id to reply with.
+ * @param cb: callback function.
+ * @param cb_arg: callback user arg.
+ * @return 0 on error.
+ */
+int mesh_new_callback(struct mesh_area* mesh, struct query_info* qinfo,
+	uint16_t qflags, struct edns_data* edns, ldns_buffer* buf, 
+	uint16_t qid, mesh_cb_func_t cb, void* cb_arg);
+
 /**
  * Handle new event from the wire. A serviced query has returned.
  * The query state will be made runnable, and the mesh_area will process
@@ -332,6 +380,22 @@ int mesh_state_attachment(struct mesh_state* super, struct mesh_state* sub);
 int mesh_state_add_reply(struct mesh_state* s, struct edns_data* edns, 
 	struct comm_reply* rep, uint16_t qid, uint16_t qflags);
 
+/**
+ * Create new callback structure and attach it to a mesh state.
+ * Does not update stat items in mesh area.
+ * @param s: the mesh state.
+ * @param edns: edns data for reply (bufsize).
+ * @param buf: buffer for reply
+ * @param cb: callback to call with results.
+ * @param cb_arg: callback user arg.
+ * @param qid: ID of reply.
+ * @param qflags: original query flags.
+ * @return: 0 on alloc error.
+ */
+int mesh_state_add_cb(struct mesh_state* s, struct edns_data* edns,
+        ldns_buffer* buf, mesh_cb_func_t cb, void* cb_arg, uint16_t qid, 
+	uint16_t qflags);
+
 /**
  * Run the mesh. Run all runnable mesh states. Which can create new
  * runnable mesh states. Until completion. Automatically called by
@@ -351,6 +415,12 @@ void mesh_run(struct mesh_area* mesh, struct mesh_state* mstate,
  */
 void mesh_stats(struct mesh_area* mesh, const char* str);
 
+/**
+ * Clear the stats that the mesh keeps (number of queries serviced)
+ * @param mesh: the mesh
+ */
+void mesh_stats_clear(struct mesh_area* mesh);
+
 /**
  * Print all the states in the mesh to the log.
  * @param mesh: the mesh to print all states of.

services/modstack.c

@@ -0,0 +1,167 @@
+/*
+ * services/modstack.c - stack of modules
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to help maintain a stack of modules.
+ */
+#include "config.h"
+#include "services/modstack.h"
+#include "util/module.h"
+#include "util/fptr_wlist.h"
+#include "iterator/iterator.h"
+#include "validator/validator.h"
+
+/** count number of modules (words) in the string */
+static int
+count_modules(const char* s)
+{
+        int num = 0;
+        if(!s)
+                return 0;
+        while(*s) {
+                /* skip whitespace */
+                while(*s && isspace((int)*s))
+                        s++;
+                if(*s && !isspace((int)*s)) {
+                        /* skip identifier */
+                        num++;
+                        while(*s && !isspace((int)*s))
+                                s++;
+                }
+        }
+        return num;
+}
+
+void 
+modstack_init(struct module_stack* stack)
+{
+	stack->num = 0;
+	stack->mod = NULL;
+}
+
+int 
+modstack_config(struct module_stack* stack, const char* module_conf)
+{
+        int i;
+        verbose(VERB_QUERY, "module config: \"%s\"", module_conf);
+        stack->num = count_modules(module_conf);
+        if(stack->num == 0) {
+                log_err("error: no modules specified");
+                return 0;
+        }
+        if(stack->num > MAX_MODULE) {
+                log_err("error: too many modules (%d max %d)",
+                        stack->num, MAX_MODULE);
+                return 0;
+        }
+        stack->mod = (struct module_func_block**)calloc((size_t)
+                stack->num, sizeof(struct module_func_block*));
+        if(!stack->mod) {
+                log_err("out of memory");
+                return 0;
+        }
+        for(i=0; i<stack->num; i++) {
+                stack->mod[i] = module_factory(&module_conf);
+                if(!stack->mod[i]) {
+                        log_err("Unknown value for next module: '%s'",
+                                module_conf);
+                        return 0;
+                }
+        }
+        return 1;
+}
+
+struct 
+module_func_block* module_factory(const char** str)
+{
+        /* these are the modules available */
+        int num = 2;
+        const char* names[] = {"iterator", "validator", NULL};
+        struct module_func_block* (*fb[])(void) = 
+                {&iter_get_funcblock, &val_get_funcblock, NULL};
+
+        int i;
+        const char* s = *str;
+        while(*s && isspace((int)*s))
+                s++;
+        for(i=0; i<num; i++) {
+                if(strncmp(names[i], s, strlen(names[i])) == 0) {
+                        s += strlen(names[i]);
+                        *str = s;
+                        return (*fb[i])();
+                }
+        }
+        return NULL;
+}
+
+int 
+modstack_setup(struct module_stack* stack, const char* module_conf,
+	struct module_env* env)
+{
+        int i;
+        if(stack->num != 0)
+                modstack_desetup(stack, env);
+        /* fixed setup of the modules */
+        if(!modstack_config(stack, module_conf)) {
+		return 0;
+        }
+        env->need_to_validate = 0; /* set by module init below */
+        for(i=0; i<stack->num; i++) {
+                verbose(VERB_OPS, "init module %d: %s",
+                        i, stack->mod[i]->name);
+                log_assert(fptr_whitelist_mod_init(stack->mod[i]->init));
+                if(!(*stack->mod[i]->init)(env, i)) {
+                        log_err("module init for module %s failed",
+                                stack->mod[i]->name);
+			return 0;
+                }
+        }
+	return 1;
+}
+
+void 
+modstack_desetup(struct module_stack* stack, struct module_env* env)
+{
+        int i;
+        for(i=0; i<stack->num; i++) {
+                log_assert(fptr_whitelist_mod_deinit(stack->mod[i]->deinit));
+                (*stack->mod[i]->deinit)(env, i);
+        }
+        stack->num = 0;
+        free(stack->mod);
+        stack->mod = NULL;
+}

services/modstack.h

@@ -0,0 +1,99 @@
+/*
+ * services/modstack.h - stack of modules
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions to help maintain a stack of modules.
+ */
+
+#ifndef SERVICES_MODSTACK_H
+#define SERVICES_MODSTACK_H
+struct module_func_block;
+struct module_env;
+
+/**
+ * Stack of modules.
+ */
+struct module_stack {
+	/** the number of modules */
+	int num;
+	/** the module callbacks, array of num_modules length (ref only) */
+	struct module_func_block** mod;
+};
+
+/**
+ * Init a stack of modules
+ * @param stack: initialised as empty.
+ */
+void modstack_init(struct module_stack* stack);
+
+/**
+ * Read config file module settings and set up the modfunc block
+ * @param stack: the stack of modules (empty before call). 
+ * @param module_conf: string what modules to insert.
+ * @return false on error
+ */
+int modstack_config(struct module_stack* stack, const char* module_conf);
+
+/**
+ * Get funcblock for module name
+ * @param str: string with module name. Advanced to next value on success.
+ *	The string is assumed whitespace separated list of module names.
+ * @return funcblock or NULL on error.
+ */
+struct module_func_block* module_factory(const char** str);
+
+/**
+ * Setup modules. Assigns ids and calls module_init.
+ * @param stack: if not empty beforehand, it will be desetup()ed.
+ *	It is then modstack_configged().
+ * @param module_conf: string what modules to insert.
+ * @param env: module environment which is inited by the modules.
+ *	environment should have a superalloc, cfg,
+ *	env.need_to_validate is set by the modules.
+ * @return on false a module init failed.
+ */
+int modstack_setup(struct module_stack* stack, const char* module_conf,
+	struct module_env* env);
+
+/**
+ * Desetup the modules, deinit, delete.
+ * @param stack: made empty.
+ * @param env: module env for module deinit() calls.
+ */
+void modstack_desetup(struct module_stack* stack, struct module_env* env);
+
+#endif /* SERVICES_MODSTACK_H */

services/outside_network.c

@@ -150,6 +150,8 @@ outnet_tcp_take_into_use(struct waiting_tcp* w, uint8_t* pkt, size_t pkt_len)
 	w->outnet->tcp_free = pend->next_free;
 	pend->next_free = NULL;
 	pend->query = w;
+	pend->c->repinfo.addrlen = w->addrlen;
+	memcpy(&pend->c->repinfo.addr, &w->addr, w->addrlen);
 	ldns_buffer_clear(pend->c->buffer);
 	ldns_buffer_write(pend->c->buffer, pkt, pkt_len);
 	ldns_buffer_flip(pend->c->buffer);
@@ -200,13 +202,13 @@ outnet_tcp_cb(struct comm_point* c, void* arg, int error,
 	struct outside_network* outnet = pend->query->outnet;
 	verbose(VERB_ALGO, "outnettcp cb");
 	if(error != NETEVENT_NOERROR) {
-		verbose(VERB_DETAIL, "outnettcp got tcp error %d", error);
+		verbose(VERB_QUERY, "outnettcp got tcp error %d", error);
 		/* pass error below and exit */
 	} else {
 		/* check ID */
 		if(ldns_buffer_limit(c->buffer) < sizeof(uint16_t) ||
 			LDNS_ID_WIRE(ldns_buffer_begin(c->buffer))!=pend->id) {
-			log_addr(VERB_DETAIL, 
+			log_addr(VERB_QUERY, 
 				"outnettcp: bad ID in reply, from:",
 				&pend->query->addr, pend->query->addrlen);
 			error = NETEVENT_CLOSED;
@@ -228,11 +230,11 @@ outnet_udp_cb(struct comm_point* c, void* arg, int error,
 	verbose(VERB_ALGO, "answer cb");
 
 	if(error != NETEVENT_NOERROR) {
-		verbose(VERB_DETAIL, "outnetudp got udp error %d", error);
+		verbose(VERB_QUERY, "outnetudp got udp error %d", error);
 		return 0;
 	}
 	if(ldns_buffer_limit(c->buffer) < LDNS_HEADER_SIZE) {
-		verbose(VERB_DETAIL, "outnetudp udp too short");
+		verbose(VERB_QUERY, "outnetudp udp too short");
 		return 0;
 	}
 	log_assert(reply_info);
@@ -249,7 +251,7 @@ outnet_udp_cb(struct comm_point* c, void* arg, int error,
 	verbose(VERB_ALGO, "lookup size is %d entries", (int)outnet->pending->count);
 	p = (struct pending*)rbtree_search(outnet->pending, &key);
 	if(!p) {
-		verbose(VERB_DETAIL, "received unwanted or unsolicited udp reply dropped.");
+		verbose(VERB_QUERY, "received unwanted or unsolicited udp reply dropped.");
 		log_buf(VERB_ALGO, "dropped message", c->buffer);
 		return 0;
 	}
@@ -257,7 +259,7 @@ outnet_udp_cb(struct comm_point* c, void* arg, int error,
 	verbose(VERB_ALGO, "received udp reply.");
 	log_buf(VERB_ALGO, "udp message", c->buffer);
 	if(p->c != c) {
-		verbose(VERB_DETAIL, "received reply id,addr on wrong port. "
+		verbose(VERB_QUERY, "received reply id,addr on wrong port. "
 			"dropped.");
 		return 0;
 	}
@@ -286,6 +288,11 @@ open_udp_port_range(const char* ifname, struct addrinfo* hints, int porthint)
 	char portstr[32];
 	if(porthint != -1)
 		snprintf(portstr, sizeof(portstr), "%d", porthint);
+	else if(!ifname) {
+		if(hints->ai_family == AF_INET)
+			ifname = "0.0.0.0";
+		else	ifname="::";
+	}
 
 	if((r=getaddrinfo(ifname, ((porthint==-1)?NULL:portstr), hints, 
 		&res)) != 0 || !res) {
@@ -295,7 +302,7 @@ open_udp_port_range(const char* ifname, struct addrinfo* hints, int porthint)
 			r==EAI_SYSTEM?(char*)strerror(errno):"");
 		return -1;
 	}
-	s = create_udp_sock(res);
+	s = create_udp_sock(res, 1);
 	freeaddrinfo(res);
 	return s;
 }
@@ -1022,14 +1029,15 @@ serviced_tcp_callback(struct comm_point* c, void* arg, int error,
 	struct comm_reply r2;
 	sq->pending = NULL; /* removed after this callback */
 	if(error != NETEVENT_NOERROR)
-		log_addr(VERB_DETAIL, "tcp error for address", 
+		log_addr(VERB_QUERY, "tcp error for address", 
 			&sq->addr, sq->addrlen);
 	if(error==NETEVENT_NOERROR)
 		infra_update_tcp_works(sq->outnet->infra, &sq->addr,
 			sq->addrlen);
-	if(error==NETEVENT_NOERROR && LDNS_RCODE_WIRE(ldns_buffer_begin(
-		c->buffer)) == LDNS_RCODE_FORMERR && 
-		sq->status == serviced_query_TCP_EDNS) {
+	if(error==NETEVENT_NOERROR && sq->status == serviced_query_TCP_EDNS &&
+		(LDNS_RCODE_WIRE(ldns_buffer_begin(c->buffer)) == 
+		LDNS_RCODE_FORMERR || LDNS_RCODE_WIRE(ldns_buffer_begin(
+		c->buffer)) == LDNS_RCODE_NOTIMPL) ) {
 		if(!infra_edns_update(sq->outnet->infra, &sq->addr, 
 			sq->addrlen, -1, time(0)))
 			log_err("Out of memory caching no edns for host");
@@ -1055,7 +1063,7 @@ serviced_tcp_initiate(struct outside_network* outnet,
 {
 	serviced_encode(sq, buff, sq->status == serviced_query_TCP_EDNS);
 	sq->pending = pending_tcp_query(outnet, buff, &sq->addr,
-		sq->addrlen, TCP_QUERY_TIMEOUT, serviced_tcp_callback, 
+		sq->addrlen, TCP_AUTH_QUERY_TIMEOUT, serviced_tcp_callback, 
 		sq, outnet->rnd);
 	if(!sq->pending) {
 		/* delete from tree so that a retry by above layer does not
@@ -1102,8 +1110,9 @@ serviced_udp_callback(struct comm_point* c, void* arg, int error,
 		}
 	}
 	if(error == NETEVENT_NOERROR && sq->status == serviced_query_UDP_EDNS 
-		&& LDNS_RCODE_WIRE(ldns_buffer_begin(c->buffer)) 
-			== LDNS_RCODE_FORMERR) {
+		&& (LDNS_RCODE_WIRE(ldns_buffer_begin(c->buffer)) 
+			== LDNS_RCODE_FORMERR || LDNS_RCODE_WIRE(
+			ldns_buffer_begin(c->buffer)) == LDNS_RCODE_NOTIMPL)) {
 		/* note no EDNS, fallback without EDNS */
 		if(!infra_edns_update(outnet->infra, &sq->addr, sq->addrlen,
 			-1, (time_t)now.tv_sec)) {
@@ -1170,7 +1179,7 @@ outnet_serviced_query(struct outside_network* outnet,
 	sq = lookup_serviced(outnet, buff, dnssec, addr, addrlen);
 	if(sq) {
 		/* see if it is a duplicate notification request for cb_arg */
-		if((cb = callback_list_find(sq, callback_arg, arg_compare))) {
+		if(callback_list_find(sq, callback_arg, arg_compare)) {
 			return sq;
 		}
 	}

services/outside_network.h

@@ -225,7 +225,9 @@ struct serviced_query {
 		serviced_query_TCP_EDNS,
 		/** TCP without EDNS sent */
 		serviced_query_TCP
-	} status;
+	} 	
+		/** variable with current status */ 
+		status;
 	/** true if serviced_query is scheduled for deletion already */
 	int to_be_deleted;
 	/** number of UDP retries */

smallapp/unbound-checkconf.c

@@ -50,6 +50,7 @@
 #include "util/regional.h"
 #include "iterator/iterator.h"
 #include "validator/validator.h"
+#include "services/localzone.h"
 #include <pwd.h>
 
 /** Give checkconf usage, and exit (1). */
@@ -85,18 +86,58 @@ check_mod(struct config_file* cfg, struct module_func_block* fb)
 	regional_destroy(env.scratch);
 }
 
-/** check configuration for errors */
+/** check localzones */
 static void
-morechecks(struct config_file* cfg)
+localzonechecks(struct config_file* cfg)
+{
+	struct local_zones* zs;
+	if(!(zs = local_zones_create()))
+		fatal_exit("out of memory");
+	if(!local_zones_apply_cfg(zs, cfg))
+		fatal_exit("failed local-zone, local-data configuration");
+	local_zones_delete(zs);
+}
+
+/** emit warnings for IP in hosts */
+static void
+warn_hosts(const char* typ, struct config_stub* list)
 {
-	int i;
 	struct sockaddr_storage a;
 	socklen_t alen;
+	struct config_stub* s;
+	struct config_strlist* h;
+	for(s=list; s; s=s->next) {
+		for(h=s->hosts; h; h=h->next) {
+			if(extstrtoaddr(h->str, &a, &alen)) {
+				fprintf(stderr, "unbound-checkconf: warning:"
+				  " %s %s: \"%s\" is an IP%s address, "
+				  "and when looked up as a host name "
+				  "during use may not resolve.\n", 
+				  s->name, typ, h->str,
+				  addr_is_ip6(&a, alen)?"6":"4");
+			}
+		}
+	}
+}
+
+/** check interface strings */
+static void
+interfacechecks(struct config_file* cfg)
+{
+	struct sockaddr_storage a;
+	socklen_t alen;
+	int i, j;
 	for(i=0; i<cfg->num_ifs; i++) {
 		if(!ipstrtoaddr(cfg->ifs[i], UNBOUND_DNS_PORT, &a, &alen)) {
 			fatal_exit("cannot parse interface specified as '%s'",
 				cfg->ifs[i]);
 		}
+		for(j=0; j<cfg->num_ifs; j++) {
+			if(i!=j && strcmp(cfg->ifs[i], cfg->ifs[j])==0)
+				fatal_exit("interface: %s present twice, "
+					"cannot bind same ports twice.",
+					cfg->ifs[i]);
+		}
 	}
 	for(i=0; i<cfg->num_out_ifs; i++) {
 		if(!ipstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, 
@@ -104,7 +145,56 @@ morechecks(struct config_file* cfg)
 			fatal_exit("cannot parse outgoing-interface "
 				"specified as '%s'", cfg->out_ifs[i]);
 		}
+		for(j=0; j<cfg->num_out_ifs; j++) {
+			if(i!=j && strcmp(cfg->out_ifs[i], cfg->out_ifs[j])==0)
+				fatal_exit("outgoing-interface: %s present "
+					"twice, cannot bind same ports twice.",
+					cfg->out_ifs[i]);
+		}
 	}
+}
+
+/** check acl ips */
+static void
+aclchecks(struct config_file* cfg)
+{
+	int d;
+	struct sockaddr_storage a;
+	socklen_t alen;
+	struct config_str2list* acl;
+	for(acl=cfg->acls; acl; acl = acl->next) {
+		if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen, 
+			&d)) {
+			fatal_exit("cannot parse access control address %s %s",
+				acl->str, acl->str2);
+		}
+	}
+}
+
+/** check file list, every file must be inside the chroot location */
+static void
+check_chroot_filelist(const char* desc, struct config_strlist* list,
+	const char* chrootdir)
+{
+	struct config_strlist* p;
+	if(!chrootdir) return;
+	for(p=list; p; p=p->next) {
+		if(p->str && p->str[0] && strncmp(chrootdir, p->str,
+			strlen(chrootdir)) != 0) {
+			fatal_exit("%s: \"%s\" not in chrootdir %s", 
+				desc, p->str, chrootdir);
+		}
+	}
+}
+
+/** check configuration for errors */
+static void
+morechecks(struct config_file* cfg)
+{
+	warn_hosts("stub-host", cfg->stubs);
+	warn_hosts("forward-host", cfg->forwards);
+	interfacechecks(cfg);
+	aclchecks(cfg);
 
 	if(cfg->verbosity < 0)
 		fatal_exit("verbosity value < 0");
@@ -115,6 +205,10 @@ morechecks(struct config_file* cfg)
 	if(!cfg->do_udp && !cfg->do_tcp)
 		fatal_exit("udp and tcp are both disabled, pointless");
 
+	if(cfg->chrootdir && cfg->chrootdir[0] && 
+		cfg->chrootdir[strlen(cfg->chrootdir)-1] == '/')
+		fatal_exit("chootdir %s has trailing slash '/' please remove.",
+			cfg->chrootdir);
 	if(cfg->chrootdir && strncmp(cfg->chrootdir, cfg->directory,
 		strlen(cfg->chrootdir)) != 0)
 		fatal_exit("working directory %s not in chrootdir %s",
@@ -129,19 +223,26 @@ morechecks(struct config_file* cfg)
 			strlen(cfg->chrootdir)) != 0)
 		fatal_exit("log file %s not in chrootdir %s",
 			cfg->logfile, cfg->chrootdir);
+	check_chroot_filelist("file with root-hints", 
+		cfg->root_hints, cfg->chrootdir);
+	check_chroot_filelist("trust-anchor-file", 
+		cfg->trust_anchor_file_list, cfg->chrootdir);
+	check_chroot_filelist("trusted-keys-file", 
+		cfg->trusted_keys_file_list, cfg->chrootdir);
 	
 	if(strcmp(cfg->module_conf, "iterator") != 0 &&
 		strcmp(cfg->module_conf, "validator iterator") != 0) {
-		fatal_exit("module conf %s is not known to work",
+		fatal_exit("module conf '%s' is not known to work",
 			cfg->module_conf);
 	}
 
 	if(cfg->username && cfg->username[0]) {
-		struct passwd *pwd;
-		if((pwd = getpwnam(cfg->username)) == NULL)
+		if(getpwnam(cfg->username) == NULL)
 			fatal_exit("user '%s' does not exist.", cfg->username);
 		endpwent();
 	}
+
+	localzonechecks(cfg);
 }
 
 /** check config file */

smallapp/unbound-host.c

@@ -0,0 +1,441 @@
+/*
+ * checkconf/unbound-host.c - replacement for host that supports validation.
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This file performs functionality like 'host', and also supports validation.
+ * It uses the libunbound library.
+ */
+
+#include "config.h"
+#include "libunbound/unbound.h"
+#include <ldns/ldns.h>
+
+/** verbosity for unbound-host app */
+static int verb = 0;
+
+/** Give unbound-host usage, and exit (1). */
+static void
+usage()
+{
+	printf("Usage:	unbound-host [-vdh] [-c class] [-t type] hostname\n");
+	printf("                     [-y key] [-f keyfile] [-F namedkeyfile]\n");
+	printf("  Queries the DNS for information.\n");
+	printf("  The hostname is looked up for IP4, IP6 and mail.\n");
+	printf("  If an ip-address is given a reverse lookup is done.\n");
+	printf("  Use the -v option to see DNSSEC security information.\n");
+	printf("    -t type		what type to look for.\n");
+	printf("    -c class		what class to look for, if not class IN.\n");
+	printf("    -y 'keystring'	specify trust anchor, DS or DNSKEY, like\n");
+	printf("			-y 'example.com DS 31560 5 1 1CFED8478...'\n");
+	printf("    -f keyfile		read trust anchors from file, with lines as -y.\n");
+	printf("    -F keyfile		read named.conf-style trust anchors.\n");
+	printf("    -v			be more verbose, shows nodata and security.\n");
+	printf("    -d			debug, traces the action, -d -d shows more.\n");
+	printf("    -h			show this usage help.\n");
+	printf("Version %s\n", PACKAGE_VERSION);
+	printf("BSD licensed, see LICENSE in source package for details.\n");
+	printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
+	exit(1);
+}
+
+/** determine if str is ip4 and put into reverse lookup format */
+static int
+isip4(const char* nm, char** res)
+{
+	struct in_addr addr;
+	/* ddd.ddd.ddd.ddd.in-addr.arpa. is less than 32 */
+	char buf[32];
+	if(inet_pton(AF_INET, nm, &addr) <= 0) {
+		return 0;
+	}
+	snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa",
+		(unsigned)((uint8_t*)&addr)[3], (unsigned)((uint8_t*)&addr)[2],
+		(unsigned)((uint8_t*)&addr)[1], (unsigned)((uint8_t*)&addr)[0]);
+	*res = strdup(buf);
+	return 1;
+}
+
+/** determine if str is ip6 and put into reverse lookup format */
+static int
+isip6(const char* nm, char** res)
+{
+	struct in6_addr addr;
+	/* [nibble.]{32}.ip6.arpa. is less than 128 */
+	char* hex = "0123456789abcdef";
+	char buf[128];
+	char *p;
+	int i;
+	if(inet_pton(AF_INET6, nm, &addr) <= 0) {
+		return 0;
+	}
+	p = buf;
+	for(i=15; i>=0; i--) {
+		uint8_t b = ((uint8_t*)&addr)[i];
+		*p++ = hex[ (b&0x0f) ];
+		*p++ = '.';
+		*p++ = hex[ (b&0xf0) >> 4 ];
+		*p++ = '.';
+	}
+	snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa");
+	*res = strdup(buf);
+	if(!*res) {
+		fprintf(stderr, "error: out of memory\n");
+		exit(1);
+	}
+	return 1;
+}
+
+/** massage input name */
+static char*
+massage_qname(const char* nm, int* reverse)
+{
+	/* recognise IP4 and IP6, create reverse addresses if needed */
+	char* res;
+	if(isip4(nm, &res)) {
+		*reverse = 1;
+	} else if(isip6(nm, &res)) {
+		*reverse = 1;
+	} else {
+		res = strdup(nm);
+	}
+	if(!res) {
+		fprintf(stderr, "error: out of memory\n");
+		exit(1);
+	}
+	return res;
+}
+
+/** massage input type */
+static int
+massage_type(const char* t, int reverse, int* multi)
+{
+	if(t) {
+		int r = ldns_get_rr_type_by_name(t);
+		if(r == 0 && strcasecmp(t, "TYPE0") != 0 && 
+			strcmp(t, "") != 0) {
+			fprintf(stderr, "error unknown type %s\n", t);
+			exit(1);
+		}
+		return r;
+	}
+	if(!t && reverse)
+		return LDNS_RR_TYPE_PTR;
+	*multi = 1;
+	return LDNS_RR_TYPE_A;
+}
+
+/** massage input class */
+static int
+massage_class(const char* c)
+{
+	if(c) {
+		int r = ldns_get_rr_class_by_name(c);
+		if(r == 0 && strcasecmp(c, "CLASS0") != 0 && 
+			strcmp(c, "") != 0) {
+			fprintf(stderr, "error unknown class %s\n", c);
+			exit(1);
+		}
+		return r;
+	}
+	return LDNS_RR_CLASS_IN;
+}
+
+/** nice security status string */
+static const char* 
+secure_str(struct ub_result* result)
+{
+	if(result->secure) return "(secure)";
+	if(result->bogus) return "(BOGUS (security failure))";
+	return "(insecure)";
+}
+
+/** nice string for type */
+static void
+pretty_type(char* s, size_t len, int t)
+{
+	const ldns_rr_descriptor *d = ldns_rr_descript((uint16_t)t);
+	if(d) {
+		snprintf(s, len, "%s", d->_name);
+	} else {
+		snprintf(s, len, "TYPE%d", t);
+	}
+}
+
+/** nice string for class */
+static void
+pretty_class(char* s, size_t len, int c)
+{
+	ldns_lookup_table *cl = ldns_lookup_by_id(ldns_rr_classes, c);
+	if(cl) {
+		snprintf(s, len, "%s", cl->name);
+	} else {
+		snprintf(s, len, "CLASS%d", c);
+	}
+}
+
+/** nice string for rcode */
+static void
+pretty_rcode(char* s, size_t len, int r)
+{
+	ldns_lookup_table *rcode = ldns_lookup_by_id(ldns_rcodes, r);
+	if(rcode) {
+		snprintf(s, len, "%s", rcode->name);
+	} else {
+		snprintf(s, len, "RCODE%d", r);
+	}
+}
+
+/** convert and print rdata */
+static void
+print_rd(int t, char* data, size_t len)
+{
+	size_t i, pos = 0;
+	uint8_t* rd = (uint8_t*)malloc(len+2);
+	ldns_rr* rr = ldns_rr_new();
+	ldns_status status;
+	if(!rd || !rr) {
+		fprintf(stderr, "out of memory");
+		exit(1);
+	}
+	ldns_rr_set_type(rr, t);
+	ldns_write_uint16(rd, len);
+	memmove(rd+2, data, len);
+	ldns_rr_set_owner(rr, NULL);
+	status = ldns_wire2rdf(rr, rd, len+2, &pos);
+	if(status != LDNS_STATUS_OK) {
+	
+		free(rd);
+		printf("error_printing_data");
+	}
+	for(i=0; i<ldns_rr_rd_count(rr); i++) {
+		printf(" ");
+		ldns_rdf_print(stdout, ldns_rr_rdf(rr, i));
+	}
+	ldns_rr_free(rr);
+	free(rd);
+}
+
+/** pretty line of RR data for results */
+static void
+pretty_rdata(char* q, char* cstr, char* tstr, int t, const char* sec, 
+	char* data, size_t len)
+{
+	printf("%s", q);
+	if(strcmp(cstr, "IN") != 0)
+		printf(" in class %s", cstr);
+	if(t == LDNS_RR_TYPE_A)
+		printf(" has address");
+	else if(t == LDNS_RR_TYPE_AAAA)
+		printf(" has IPv6 address");
+	else if(t == LDNS_RR_TYPE_MX)
+		printf(" mail is handled by");
+	else if(t == LDNS_RR_TYPE_PTR)
+		printf(" domain name pointer");
+	else	printf(" has %s record", tstr);
+	print_rd(t, data, len);
+	if(verb > 0)
+		printf(" %s", sec);
+	printf("\n");
+}
+
+/** pretty line of output for results */
+static void
+pretty_output(char* q, int t, int c, struct ub_result* result, int docname)
+{
+	int i;
+	const char *secstatus = secure_str(result);
+	char tstr[16];
+	char cstr[16];
+	char rcodestr[16];
+	pretty_type(tstr, 16, t);
+	pretty_class(cstr, 16, c);
+	pretty_rcode(rcodestr, 16, result->rcode);
+
+	if(!result->havedata && result->rcode) {
+		printf("Host %s not found: %d(%s).",
+			q, result->rcode, rcodestr);
+		if(verb > 0)
+			printf(" %s", secstatus);
+		printf("\n");
+		return;
+	}
+	if(docname && result->canonname &&
+		result->canonname != result->qname) {
+		printf("%s is an alias for %s", result->qname, 
+			result->canonname);
+		if(verb > 0)
+			printf(" %s", secstatus);
+		printf("\n");
+	}
+	/* remove trailing . from long canonnames for nicer output */
+	if(result->canonname && strlen(result->canonname) > 1 &&
+		result->canonname[strlen(result->canonname)-1] == '.')
+		result->canonname[strlen(result->canonname)-1] = 0;
+	if(!result->havedata) {
+		if(verb > 0) {
+			printf("%s", result->canonname?result->canonname:q);
+			if(strcmp(cstr, "IN") != 0)
+				printf(" in class %s", cstr);
+			if(t == LDNS_RR_TYPE_A)
+				printf(" has no address");
+			else if(t == LDNS_RR_TYPE_AAAA)
+				printf(" has no IPv6 address");
+			else if(t == LDNS_RR_TYPE_PTR)
+				printf(" has no domain name ptr");
+			else if(t == LDNS_RR_TYPE_MX)
+				printf(" has no mail handler record");
+			else	printf(" has no %s record", tstr);
+			printf(" %s\n", secstatus);
+		}
+		/* else: emptiness to indicate no data */
+		return;
+	}
+	i=0;
+	while(result->data[i])
+	{
+		pretty_rdata(
+			result->canonname?result->canonname:q,
+			cstr, tstr, t, secstatus, result->data[i],
+			(size_t)result->len[i]);
+		i++;
+	}
+}
+
+/** perform a lookup and printout return if domain existed */
+static int
+dnslook(struct ub_ctx* ctx, char* q, int t, int c, int docname)
+{
+	int ret;
+	struct ub_result* result;
+
+	ret = ub_resolve(ctx, q, t, c, &result);
+	if(ret != 0) {
+		fprintf(stderr, "resolve error: %s\n", ub_strerror(ret));
+		exit(1);
+	}
+	pretty_output(q, t, c, result, docname);
+	ret = result->nxdomain;
+	ub_resolve_free(result);
+	return ret;
+}
+
+/** perform host lookup */
+static void
+lookup(struct ub_ctx* ctx, const char* nm, const char* qt, const char* qc)
+{
+	/* massage input into a query name, type and class */
+	int multi = 0;	 /* no type, so do A, AAAA, MX */
+	int reverse = 0; /* we are doing a reverse lookup */
+	char* realq = massage_qname(nm, &reverse);
+	int t = massage_type(qt, reverse, &multi);
+	int c = massage_class(qc);
+
+	/* perform the query */
+	if(multi) {
+		if(!dnslook(ctx, realq, LDNS_RR_TYPE_A, c, 1)) {
+			/* domain exists, lookup more */
+			(void)dnslook(ctx, realq, LDNS_RR_TYPE_AAAA, c, 0);
+			(void)dnslook(ctx, realq, LDNS_RR_TYPE_MX, c, 0);
+		}
+	} else {
+		(void)dnslook(ctx, realq, t, c, 1);
+	}
+	ub_ctx_delete(ctx);
+	free(realq);
+}
+
+/** getopt global, in case header files fail to declare it. */
+extern int optind;
+/** getopt global, in case header files fail to declare it. */
+extern char* optarg;
+
+/** Main routine for checkconf */
+int main(int argc, char* argv[])
+{
+	int c;
+	char* qclass = NULL;
+	char* qtype = NULL;
+	struct ub_ctx* ctx = NULL;
+	int debuglevel = 0;
+	
+	ctx = ub_ctx_create();
+	if(!ctx) {
+		fprintf(stderr, "error: out of memory\n");
+		exit(1);
+	}
+
+	/* parse the options */
+	while( (c=getopt(argc, argv, "F:c:df:ht:vy:")) != -1) {
+		switch(c) {
+		case 'c':
+			qclass = optarg;
+			break;
+		case 'd':
+			debuglevel++;
+			if(debuglevel < 2) 
+				debuglevel = 2; /* at least VERB_DETAIL */
+			ub_ctx_debuglevel(ctx, debuglevel);
+			break;
+		case 't':
+			qtype = optarg;
+			break;
+		case 'v':
+			verb++;
+			break;
+		case 'y':
+			ub_ctx_add_ta(ctx, optarg);
+			break;
+		case 'f':
+			ub_ctx_add_ta_file(ctx, optarg);
+			break;
+		case 'F':
+			ub_ctx_trustedkeys(ctx, optarg);
+			break;
+		case '?':
+		case 'h':
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+	if(argc != 1)
+		usage();
+
+	lookup(ctx, argv[0], qtype, qclass);
+	return 0;
+}

smallapp/worker_cb.c

@@ -107,3 +107,56 @@ worker_alloc_cleanup(void* ATTR_UNUSED(arg))
 {
 	log_assert(0);
 }
+
+int
+acl_list_cmp(const void* ATTR_UNUSED(k1), const void* ATTR_UNUSED(k2))
+{
+	log_assert(0);
+	return 0;
+}
+
+int libworker_send_packet(ldns_buffer* ATTR_UNUSED(pkt), 
+	struct sockaddr_storage* ATTR_UNUSED(addr), 
+	socklen_t ATTR_UNUSED(addrlen), int ATTR_UNUSED(timeout), 
+	struct module_qstate* ATTR_UNUSED(q), int ATTR_UNUSED(use_tcp))
+{
+	log_assert(0);
+	return 0;
+}
+
+struct outbound_entry* libworker_send_query(uint8_t* ATTR_UNUSED(qname), 
+	size_t ATTR_UNUSED(qnamelen), uint16_t ATTR_UNUSED(qtype), 
+	uint16_t ATTR_UNUSED(qclass), uint16_t ATTR_UNUSED(flags), 
+	int ATTR_UNUSED(dnssec), struct sockaddr_storage* ATTR_UNUSED(addr), 
+	socklen_t ATTR_UNUSED(addrlen), struct module_qstate* ATTR_UNUSED(q))
+{
+	log_assert(0);
+	return 0;
+}
+
+int libworker_handle_reply(struct comm_point* ATTR_UNUSED(c), 
+	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
+        struct comm_reply* ATTR_UNUSED(reply_info))
+{
+	log_assert(0);
+	return 0;
+}
+
+int libworker_handle_service_reply(struct comm_point* ATTR_UNUSED(c), 
+	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
+        struct comm_reply* ATTR_UNUSED(reply_info))
+{
+	log_assert(0);
+	return 0;
+}
+
+int context_query_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
+{
+	log_assert(0);
+	return 0;
+}
+
+void worker_stat_timer_cb(void* ATTR_UNUSED(arg))
+{
+	log_assert(0);
+}

testcode/asynclook.c

@@ -0,0 +1,472 @@
+/*
+ * testcode/asynclook.c - debug program perform async libunbound queries.
+ *
+ * Copyright (c) 2008, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This program shows the results from several background lookups,
+ * while printing time in the foreground.
+ */
+
+#include "config.h"
+#include "libunbound/unbound.h"
+#include "util/locks.h"
+#include "util/log.h"
+
+/**
+ * result list for the lookups
+ */
+struct lookinfo {
+	/** name to look up */
+	char* name;
+	/** tracking number that can be used to cancel the query */
+	int async_id;
+	/** error code from libunbound */
+	int err;
+	/** result from lookup */
+	struct ub_result* result;
+};
+
+/** global variable to see how many queries we have left */
+static int num_wait = 0;
+
+/** usage information for asynclook */
+void usage(char* argv[])
+{
+	printf("usage: %s [options] name ...\n", argv[0]);
+	printf("names are looked up at the same time, asynchronously.\n");
+	printf("	-b : use blocking requests\n");
+	printf("	-c : cancel the requests\n");
+	printf("	-d : enable debug output\n");
+	printf("	-f addr : use addr, forward to that server\n");
+	printf("	-h : this help message\n");
+	printf("	-H fname : read hosts from fname\n");
+	printf("	-r fname : read resolv.conf from fname\n");
+	printf("	-t : use a resolver thread instead of forking a process\n");
+	printf("	-x : perform extended threaded test\n");
+	exit(1);
+}
+
+/** print result from lookup nicely */
+static void
+print_result(struct lookinfo* info)
+{
+	char buf[100];
+	if(info->err) /* error (from libunbound) */
+		printf("%s: error %s\n", info->name,
+			ub_strerror(info->err));
+	else if(!info->result)
+		printf("%s: cancelled\n", info->name);
+	else if(info->result->havedata)
+		printf("%s: %s\n", info->name,
+			inet_ntop(AF_INET, info->result->data[0],
+			buf, (socklen_t)sizeof(buf)));
+	else {
+		/* there is no data, why that? */
+		if(info->result->rcode == 0 /*noerror*/ ||
+			info->result->nxdomain)
+			printf("%s: no data %s\n", info->name,
+			info->result->nxdomain?"(no such host)":
+			"(no IP4 address)");
+		else	/* some error (from the server) */
+			printf("%s: DNS error %d\n", info->name,
+				info->result->rcode);
+	}
+}
+
+/** this is a function of type ub_callback_t */
+static void 
+lookup_is_done(void* mydata, int err, struct ub_result* result)
+{
+	/* cast mydata back to the correct type */
+	struct lookinfo* info = (struct lookinfo*)mydata;
+	fprintf(stderr, "name %s resolved\n", info->name);
+	info->err = err;
+	info->result = result;
+	/* one less to wait for */
+	num_wait--;
+}
+
+/** check error, if bad, exit with error message */
+static void 
+checkerr(const char* desc, int err)
+{
+	if(err != 0) {
+		printf("%s error: %s\n", desc, ub_strerror(err));
+		exit(1);
+	}
+}
+
+#if !defined(HAVE_PTHREAD) && !defined(HAVE_SOLARIS_THREADS)
+/** only one process can communicate with async worker */
+#define NUMTHR 1
+#else /* have threads */
+/** number of threads to make in extended test */
+#define NUMTHR 10
+#endif
+
+/** struct for extended thread info */
+struct ext_thr_info {
+	/** thread num for debug */
+	int thread_num;
+	/** thread id */
+	ub_thread_t tid;
+	/** context */
+	struct ub_ctx* ctx;
+	/** size of array to query */
+	int argc;
+	/** array of names to query */
+	char** argv;
+	/** number of queries to do */
+	int numq;
+};
+
+/** if true, we are testing against 'localhost' and extra checking is done */
+static int q_is_localhost = 0;
+
+/** check result structure for the 'correct' answer */
+static void
+ext_check_result(const char* desc, int err, struct ub_result* result)
+{
+	checkerr(desc, err);
+	if(result == NULL) {
+		printf("%s: error result is NULL.\n", desc);
+		exit(1);
+	}
+	if(q_is_localhost) {
+		if(strcmp(result->qname, "localhost") != 0) {
+			printf("%s: error result has wrong qname.\n", desc);
+			exit(1);
+		}
+		if(result->qtype != LDNS_RR_TYPE_A) {
+			printf("%s: error result has wrong qtype.\n", desc);
+			exit(1);
+		}
+		if(result->qclass != LDNS_RR_CLASS_IN) {
+			printf("%s: error result has wrong qclass.\n", desc);
+			exit(1);
+		}
+		if(result->data == NULL) {
+			printf("%s: error result->data is NULL.\n", desc);
+			exit(1);
+		}
+		if(result->len == NULL) {
+			printf("%s: error result->len is NULL.\n", desc);
+			exit(1);
+		}
+		if(result->rcode != 0) {
+			printf("%s: error result->rcode is set.\n", desc);
+			exit(1);
+		}
+		if(result->havedata == 0) {
+			printf("%s: error result->havedata is unset.\n", desc);
+			exit(1);
+		}
+		if(result->nxdomain != 0) {
+			printf("%s: error result->nxdomain is set.\n", desc);
+			exit(1);
+		}
+		if(result->secure || result->bogus) {
+			printf("%s: error result->secure or bogus is set.\n", 
+				desc);
+			exit(1);
+		}
+		if(result->data[0] == NULL) {
+			printf("%s: error result->data[0] is NULL.\n", desc);
+			exit(1);
+		}
+		if(result->len[0] != 4) {
+			printf("%s: error result->len[0] is wrong.\n", desc);
+			exit(1);
+		}
+		if(result->len[1] != 0 || result->data[1] != NULL) {
+			printf("%s: error result->data[1] or len[1] is "
+				"wrong.\n", desc);
+			exit(1);
+		}
+	}
+}
+
+/** extended bg result callback, this function is ub_callback_t */
+static void 
+ext_callback(void* mydata, int err, struct ub_result* result)
+{
+	int* my_id = (int*)mydata;
+	int doprint = 0;
+	if(my_id) {
+		/* I have an id, make sure we are not cancelled */
+		if(*my_id == 0) {
+			printf("error: query returned, but was cancelled\n");
+			abort();
+			exit(1);
+		}
+		if(doprint) 
+			printf("cb %d: ", *my_id);
+	}
+	ext_check_result("ext_callback", err, result);
+	log_assert(result);
+	if(doprint) {
+		struct lookinfo pi;
+		pi.name = result?result->qname:"noname";
+		pi.result = result;
+		pi.err = 0;
+		print_result(&pi);
+	}
+	ub_resolve_free(result);
+}
+
+/** extended thread worker */
+static void*
+ext_thread(void* arg)
+{
+	struct ext_thr_info* inf = (struct ext_thr_info*)arg;
+	int i, r;
+	struct ub_result* result;
+	int* async_ids = NULL;
+	log_thread_set(&inf->thread_num);
+	if(inf->thread_num > NUMTHR*2/3) {
+		async_ids = (int*)calloc((size_t)inf->numq, sizeof(int));
+		if(!async_ids) {
+			printf("out of memory\n");
+			exit(1);
+		}
+	}
+	for(i=0; i<inf->numq; i++) {
+		if(async_ids) {
+			r = ub_resolve_async(inf->ctx, 
+				inf->argv[i%inf->argc], LDNS_RR_TYPE_A, 
+				LDNS_RR_CLASS_IN, &async_ids[i], ext_callback, 
+				&async_ids[i]);
+			checkerr("ub_resolve_async", r);
+			if(i > 100) {
+				r = ub_cancel(inf->ctx, async_ids[i-100]);
+				checkerr("ub_cancel", r);
+				async_ids[i-100]=0;
+			}
+		} else if(inf->thread_num > NUMTHR/2) {
+			/* async */
+			r = ub_resolve_async(inf->ctx, 
+				inf->argv[i%inf->argc], LDNS_RR_TYPE_A, 
+				LDNS_RR_CLASS_IN, NULL, ext_callback, NULL);
+			checkerr("ub_resolve_async", r);
+		} else  {
+			/* blocking */
+			r = ub_resolve(inf->ctx, inf->argv[i%inf->argc], 
+				LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN, &result);
+			ext_check_result("ub_resolve", r, result);
+		}
+	}
+	if(inf->thread_num > NUMTHR/2) {
+		r = ub_wait(inf->ctx);
+		checkerr("ub_ctx_wait", r);
+	}
+	free(async_ids);
+	
+	return NULL;
+}
+
+/** perform extended threaded test */
+static int
+ext_test(struct ub_ctx* ctx, int argc, char** argv)
+{
+	struct ext_thr_info inf[NUMTHR];
+	int i;
+	if(argc == 1 && strcmp(argv[0], "localhost") == 0)
+		q_is_localhost = 1;
+	printf("extended test start (%d threads)\n", NUMTHR);
+	for(i=0; i<NUMTHR; i++) {
+		/* 0 = this, 1 = library bg worker */
+		inf[i].thread_num = i+2;
+		inf[i].ctx = ctx;
+		inf[i].argc = argc;
+		inf[i].argv = argv;
+		inf[i].numq = 1000;
+		ub_thread_create(&inf[i].tid, ext_thread, &inf[i]);
+	}
+	/* the work happens here */
+	for(i=0; i<NUMTHR; i++) {
+		ub_thread_join(inf[i].tid);
+	}
+	printf("extended test end\n");
+	ub_ctx_delete(ctx);
+	checklock_stop();
+	return 0;
+}
+
+/** getopt global, in case header files fail to declare it. */
+extern int optind;
+/** getopt global, in case header files fail to declare it. */
+extern char* optarg;
+
+/** main program for asynclook */
+int main(int argc, char** argv) 
+{
+	int c;
+	struct ub_ctx* ctx;
+	struct lookinfo* lookups;
+	int i, r, cancel=0, blocking=0, ext=0;
+
+	/* lock debug start (if any) */
+	checklock_start();
+
+	/* create context */
+	ctx = ub_ctx_create();
+	if(!ctx) {
+		printf("could not create context, %s\n", strerror(errno));
+		return 1;
+	}
+
+	/* command line options */
+	if(argc == 1) {
+		usage(argv);
+	}
+	while( (c=getopt(argc, argv, "bcdf:hH:r:tx")) != -1) {
+		switch(c) {
+			case 'd':
+				r = ub_ctx_debuglevel(ctx, 3);
+				checkerr("ub_ctx_debuglevel", r);
+				break;
+			case 't':
+				r = ub_ctx_async(ctx, 1);
+				checkerr("ub_ctx_async", r);
+				break;
+			case 'c':
+				cancel = 1;
+				break;
+			case 'b':
+				blocking = 1;
+				break;
+			case 'r':
+				r = ub_ctx_resolvconf(ctx, optarg);
+				if(r != 0) {
+					printf("ub_ctx_resolvconf "
+						"error: %s : %s\n",
+						ub_strerror(r), 
+						strerror(errno));
+					return 1;
+				}
+				break;
+			case 'H':
+				r = ub_ctx_hosts(ctx, optarg);
+				if(r != 0) {
+					printf("ub_ctx_hosts "
+						"error: %s : %s\n",
+						ub_strerror(r), 
+						strerror(errno));
+					return 1;
+				}
+				break;
+			case 'f':
+				r = ub_ctx_set_fwd(ctx, optarg);
+				checkerr("ub_ctx_set_fwd", r);
+				break;
+			case 'x':
+				ext = 1;
+				break;
+			case 'h':
+			case '?':
+			default:
+				usage(argv);
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if(ext)
+		return ext_test(ctx, argc, argv);
+
+	/* allocate array for results. */
+	lookups = (struct lookinfo*)calloc((size_t)argc, 
+		sizeof(struct lookinfo));
+	if(!lookups) {
+		printf("out of memory\n");
+		return 1;
+	}
+
+	/* perform asyncronous calls */
+	num_wait = argc;
+	for(i=0; i<argc; i++) {
+		lookups[i].name = argv[i];
+		if(blocking) {
+			fprintf(stderr, "lookup %s\n", argv[i]);
+			r = ub_resolve(ctx, argv[i], LDNS_RR_TYPE_A,
+				LDNS_RR_CLASS_IN, &lookups[i].result);
+			checkerr("ub_resolve", r);
+		} else {
+			fprintf(stderr, "start async lookup %s\n", argv[i]);
+			r = ub_resolve_async(ctx, argv[i], LDNS_RR_TYPE_A,
+				LDNS_RR_CLASS_IN, &lookups[i], &lookup_is_done, 
+				&lookups[i].async_id);
+			checkerr("ub_resolve_async", r);
+		}
+	}
+	if(blocking)
+		num_wait = 0;
+	else if(cancel) {
+		for(i=0; i<argc; i++) {
+			fprintf(stderr, "cancel %s\n", argv[i]);
+			r = ub_cancel(ctx, lookups[i].async_id);
+			checkerr("ub_cancel", r);
+		}
+		num_wait = 0;
+	}
+
+	/* wait while the hostnames are looked up. Do something useful here */
+	if(num_wait > 0)
+	    for(i=0; i<1000; i++) {
+		usleep(100000);
+		fprintf(stderr, "%g seconds passed\n", 0.1*(double)i);
+		r = ub_process(ctx);
+		checkerr("ub_process", r);
+		if(num_wait == 0)
+			break;
+	}
+	if(i>=999) {
+		printf("timed out\n");
+		return 0;
+	}
+	printf("lookup complete\n");
+
+	/* print lookup results */
+	for(i=0; i<argc; i++) {
+		print_result(&lookups[i]);
+		ub_resolve_free(lookups[i].result);
+	}
+
+	ub_ctx_delete(ctx);
+	free(lookups);
+	checklock_stop();
+	return 0;
+}

testcode/checklocks.c

@@ -658,7 +658,9 @@ static void* checklock_main(void* arg)
 	/* Hack to get same numbers as in log file */
 	thr->num = *(int*)(thr->arg);
 	log_assert(thr->num < THRDEBUG_MAX_THREADS);
-	log_assert(thread_infos[thr->num] == NULL);
+	/* as an aside, due to this, won't work for libunbound bg thread */
+	if(thread_infos[thr->num] != NULL)
+		log_warn("thread warning, thr->num %d not NULL", thr->num);
 	thread_infos[thr->num] = thr;
 	LOCKRET(pthread_setspecific(thr_debug_key, thr));
 	if(check_locking_order)

testcode/do-tests.sh

@@ -2,7 +2,7 @@
 
 NEED_SPLINT='00-lint.tpkg'
 NEED_DOXYGEN='01-doc.tpkg'
-NEED_LDNS_TESTNS='fwd_no_edns.tpkg fwd_tcp_tc.tpkg fwd_tcp.tpkg fwd_three_service.tpkg fwd_three.tpkg fwd_ttlexpire.tpkg fwd_udp.tpkg fwd_tcp_tc6.tpkg fwd_compress_c00c.tpkg'
+NEED_LDNS_TESTNS='fwd_no_edns.tpkg fwd_tcp_tc.tpkg fwd_tcp.tpkg fwd_three_service.tpkg fwd_three.tpkg fwd_ttlexpire.tpkg fwd_udp.tpkg fwd_tcp_tc6.tpkg fwd_compress_c00c.tpkg fwd_ancil.tpkg stat_timer.tpkg 05-asynclook.tpkg stream_tcp.tpkg'
 NEED_XXD='fwd_compress_c00c.tpkg'
 NEED_NC='fwd_compress_c00c.tpkg'
 

testcode/fake_event.c

@@ -662,15 +662,6 @@ comm_point_send_reply(struct comm_reply* repinfo)
 	log_pkt("reply pkt: ", ans->pkt);
 }
 
-void 
-comm_point_send_reply_iov(struct comm_reply* repinfo, struct iovec* iov,
-        size_t iovlen)
-{
-	/* skip tcp len at [0]. */
-	write_iov_buffer(repinfo->c->buffer, iov+1, iovlen-1);
-	comm_point_send_reply(repinfo);
-}
-
 void 
 comm_point_drop_reply(struct comm_reply* repinfo)
 {
@@ -863,7 +854,7 @@ struct serviced_query* outnet_serviced_query(struct outside_network* outnet,
 	pend->addrlen = addrlen;
 	pend->callback = callback;
 	pend->cb_arg = callback_arg;
-	pend->timeout = UDP_QUERY_TIMEOUT;
+	pend->timeout = UDP_AUTH_QUERY_TIMEOUT;
 	pend->transport = transport_udp; /* pretend UDP */
 	pend->pkt = NULL;
 	pend->runtime = runtime;
@@ -1005,6 +996,12 @@ void comm_point_udp_callback(int ATTR_UNUSED(fd), short ATTR_UNUSED(event),
 	log_assert(0);
 }
 
+void comm_point_udp_ancil_callback(int ATTR_UNUSED(fd), 
+	short ATTR_UNUSED(event), void* ATTR_UNUSED(arg))
+{
+	log_assert(0);
+}
+
 void comm_point_tcp_accept_callback(int ATTR_UNUSED(fd), 
 	short ATTR_UNUSED(event), void* ATTR_UNUSED(arg))
 {
@@ -1035,6 +1032,12 @@ void comm_point_local_handle_callback(int ATTR_UNUSED(fd),
 	log_assert(0);
 }
 
+void comm_point_raw_handle_callback(int ATTR_UNUSED(fd), 
+	short ATTR_UNUSED(event), void* ATTR_UNUSED(arg))
+{
+	log_assert(0);
+}
+
 int serviced_udp_callback(struct comm_point* ATTR_UNUSED(c), 
 	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
         struct comm_reply* ATTR_UNUSED(reply_info))
@@ -1063,4 +1066,26 @@ int serviced_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
 	return 0;
 }
 
+/* no statistics timers in testbound */
+struct comm_timer* comm_timer_create(struct comm_base* ATTR_UNUSED(base), 
+	void (*cb)(void*), void* ATTR_UNUSED(cb_arg))
+{
+	(void)cb;
+	return malloc(1);
+}
+
+void comm_timer_disable(struct comm_timer* ATTR_UNUSED(timer))
+{
+}
+
+void comm_timer_set(struct comm_timer* ATTR_UNUSED(timer), 
+	struct timeval* ATTR_UNUSED(tv))
+{
+}
+
+void comm_timer_delete(struct comm_timer* timer)
+{
+	free(timer);
+}
+
 /*********** End of Dummy routines ***********/

testcode/ldns-testpkts.c

@@ -504,7 +504,7 @@ read_entry(FILE* in, const char* name, int *lineno, uint32_t* default_ttl,
 	return 0;
 }
 
-/** reads the canned reply file and returns a list of structs */
+/* reads the canned reply file and returns a list of structs */
 struct entry* 
 read_datafile(const char* name)
 {
@@ -645,7 +645,7 @@ match_all(ldns_pkt* q, ldns_pkt* p, bool mttl)
 	return 1;
 }
 
-/** finds entry in list, or returns NULL */
+/* finds entry in list, or returns NULL */
 struct entry* 
 find_match(struct entry* entries, ldns_pkt* query_pkt,
 	enum transport_type transport)
@@ -781,9 +781,14 @@ handle_query(uint8_t* inbuf, ssize_t inlen, struct entry* entries, int* count,
 				answer_pkt = NULL;
 			} else {
 				verbose(3, "Could not parse hex data (%s), sending hex data directly.\n", ldns_get_errorstr_by_id(status));
+				/* still try to adjust ID */
 				answer_size = ldns_buffer_capacity(p->reply_from_hex);
 				outbuf = LDNS_XMALLOC(uint8_t, answer_size);
 				memcpy(outbuf, ldns_buffer_export(p->reply_from_hex), answer_size);
+				if(entry->copy_id) {
+					ldns_write_uint16(outbuf, 
+						ldns_pkt_id(query_pkt));
+				}
 			}
 		} else {
 			answer_pkt = ldns_pkt_clone(p->reply);

testcode/ldns-testpkts.h

@@ -78,7 +78,7 @@
 				; with the SECTION keywords (only SECTION QUERY
 				; is used to match queries). If the data cannot
 				; be parsed, ADJUST rules for the answer packet
-				; are ignored
+				; are ignored. Only copy_id is done.
 	HEX_ANSWER_END
 	ENTRY_END
 

testcode/memstats.c

@@ -60,14 +60,8 @@ struct codeline {
 	uint64_t alloc;
 	/** number of bytes freed */
 	uint64_t free;
-};
-
-/**
- * Other allocation stats
- */
-struct alloc_misc {
-	/** number of region allocs */
-	uint64_t region_alloc;
+	/** number allocations and frees */
+	uint64_t calls;
 };
 
 /** print usage and exit */
@@ -101,18 +95,6 @@ match(char* line)
 	return 0;
 }
 
-/** read up the region stats */
-static void
-read_region_stat(char* line, struct alloc_misc* misc)
-{
-	long num = 0;
-	if(sscanf(line+50, "%ld", &num) != 1) {
-		printf("%s\n%s\n", line, line+50);
-		fatal_exit("unhandled region");
-	}
-	misc->region_alloc += num;
-}
-
 /** find or alloc codeline in tree */
 static struct codeline*
 get_codeline(rbtree_t* tree, char* key, char* func)
@@ -153,6 +135,7 @@ read_malloc_stat(char* line, rbtree_t* tree)
 	if(!cl)
 		fatal_exit("alloc failure");
 	cl->alloc += num;
+	cl->calls ++;
 }
 
 /** read up the calloc stats */
@@ -177,6 +160,7 @@ read_calloc_stat(char* line, rbtree_t* tree)
 	if(!cl)
 		fatal_exit("alloc failure");
 	cl->alloc += num*sz;
+	cl->calls ++;
 }
 
 /** get size of file */
@@ -192,7 +176,7 @@ get_file_size(const char* fname)
 
 /** read the logfile */
 static void
-readfile(rbtree_t* tree, const char* fname, struct alloc_misc* misc)
+readfile(rbtree_t* tree, const char* fname)
 {
 	off_t total = get_file_size(fname);
 	off_t done = (off_t)0;
@@ -213,8 +197,6 @@ readfile(rbtree_t* tree, const char* fname, struct alloc_misc* misc)
 
 		if(!match(buf))
 			continue;
-		if(strncmp(buf+36, "region ", 7) == 0)
-			read_region_stat(buf, misc);
 		else if(strstr(buf+36, "malloc("))
 			read_malloc_stat(buf, tree);
 		else if(strstr(buf+36, "calloc("))
@@ -230,20 +212,19 @@ readfile(rbtree_t* tree, const char* fname, struct alloc_misc* misc)
 
 /** print memory stats */
 static void
-printstats(rbtree_t* tree, struct alloc_misc* misc)
+printstats(rbtree_t* tree)
 {
 	struct codeline* cl;
-	uint64_t total = 0;
-	printf("%12lld in region alloc\n", (long long)misc->region_alloc);
-	total += misc->region_alloc;
+	uint64_t total = 0, tcalls = 0;
 	RBTREE_FOR(cl, struct codeline*, tree) {
-		printf("%12lld in %s %s\n", (long long)cl->alloc, 
-			cl->codeline, cl->func);
+		printf("%12lld / %8lld in %s %s\n", (long long)cl->alloc, 
+			(long long)cl->calls, cl->codeline, cl->func);
 		total += cl->alloc;
+		tcalls += cl->calls;
 	}
 	printf("------------\n");
-	printf("%12lld total in %ld code lines\n", (long long)total, 
-		(long)tree->count);
+	printf("%12lld / %8lld total in %ld code lines\n", (long long)total, 
+		(long long)tcalls, (long)tree->count);
 	printf("\n");
 }
 
@@ -251,15 +232,13 @@ printstats(rbtree_t* tree, struct alloc_misc* misc)
 int main(int argc, const char* argv[])
 {
 	rbtree_t* tree = 0;
-	struct alloc_misc misc;
 	if(argc != 2) {
 		usage();
 	}
 	tree = rbtree_create(codeline_cmp);
 	if(!tree)
 		fatal_exit("alloc failure");
-	memset(&misc, 0, sizeof(misc));
-	readfile(tree, argv[1], &misc);
-	printstats(tree, &misc);
+	readfile(tree, argv[1]);
+	printstats(tree);
 	return 0;
 }

testcode/readhex.c

@@ -58,7 +58,7 @@ skip_whites(const char** p)
 	}
 }
 
-/** takes a hex string and puts into buffer */
+/* takes a hex string and puts into buffer */
 void hex_to_buf(ldns_buffer* pkt, const char* hex)
 {
 	const char* p = hex;

testcode/readhex.h

@@ -41,7 +41,11 @@
 #ifndef TESTCODE_READHEX_H
 #define TESTCODE_READHEX_H
 
-/** helper to convert hex string to packet buffer */
+/** 
+ * Helper to convert hex string to packet buffer.
+ * @param pkt: buffer to put result in.
+ * @param hex: string of hex data. Spaces and ';...' comments are skipped.
+ */
 void hex_to_buf(ldns_buffer* pkt, const char* hex);
 
 #endif /* TESTCODE_READHEX_H */

testcode/replay.c

@@ -208,6 +208,8 @@ replay_moment_read(char* remain, FILE* in, const char* name, int* lineno,
 	} else if(parse_keyword(&remain, "QUERY")) {
 		mom->evt_type = repevt_front_query;
 		readentry = 1;
+		if(!extstrtoaddr("127.0.0.1", &mom->addr, &mom->addrlen))
+			fatal_exit("internal error");
 	} else if(parse_keyword(&remain, "CHECK_ANSWER")) {
 		mom->evt_type = repevt_front_reply;
 		readentry = 1;
@@ -229,13 +231,18 @@ replay_moment_read(char* remain, FILE* in, const char* name, int* lineno,
 	while(isspace((int)*remain))
 		remain++;
 	if(parse_keyword(&remain, "ADDRESS")) {
+		while(isspace((int)*remain))
+			remain++;
+		if(strlen(remain) > 0) /* remove \n */
+			remain[strlen(remain)-1] = 0;
+		printf("remain '%s'\n", remain);
 		if(!extstrtoaddr(remain, &mom->addr, &mom->addrlen)) {
 			log_err("line %d: could not parse ADDRESS: %s", 
 				*lineno, remain);
 			free(mom);
 			return NULL;
 		}
-	}
+	} 
 
 	if(readentry) {
 		mom->match = read_entry(in, name, lineno, ttl, or, prev);

testcode/replay.h

@@ -155,7 +155,9 @@ struct replay_moment {
 		repevt_back_query,
 		/** an error happens to outbound query */
 		repevt_error
-	} evt_type;
+	} 
+		/** variable with what is to happen this moment */
+		evt_type;
 
 	/** The sent packet must match this. Incoming events, the data. */
 	struct entry* match;

testcode/streamtcp.c

@@ -0,0 +1,239 @@
+/*
+ * testcode/streamtcp.c - debug program perform multiple DNS queries on tcp.
+ *
+ * Copyright (c) 2008, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * Neither the name of the NLNET LABS nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ *
+ * This program performs multiple DNS queries on a TCP stream.
+ */
+
+#include "config.h"
+#include <signal.h>
+#include "util/locks.h"
+#include "util/log.h"
+#include "util/net_help.h"
+#include "util/data/msgencode.h"
+#include "util/data/msgreply.h"
+#include "util/data/dname.h"
+
+/** usage information for streamtcp */
+void usage(char* argv[])
+{
+	printf("usage: %s [options] name type class ...\n", argv[0]);
+	printf("	sends the name-type-class queries over TCP.\n");
+	printf("-f server	what ipaddr@portnr to send the queries to\n");
+	printf("-h 		this help text\n");
+	exit(1);
+}
+
+/** open TCP socket to svr */
+static int
+open_svr(char* svr)
+{
+	struct sockaddr_storage addr;
+	socklen_t addrlen;
+	int fd = -1;
+	/* svr can be ip@port */
+	if(!extstrtoaddr(svr, &addr, &addrlen)) {
+		printf("fatal: bad server specs '%s'\n", svr);
+		exit(1);
+	}
+	fd = socket(addr_is_ip6(&addr, addrlen)?PF_INET6:PF_INET,
+		SOCK_STREAM, 0);
+	if(fd == -1) {
+		perror("socket() error");
+		exit(1);
+	}
+	if(connect(fd, (struct sockaddr*)&addr, addrlen) < 0) {
+		perror("connect() error");
+		exit(1);
+	}
+	return fd;
+}
+
+/** write a query over the TCP fd */
+static void
+write_q(int fd, ldns_buffer* buf, int id, 
+	char* strname, char* strtype, char* strclass)
+{
+	struct query_info qinfo;
+	ldns_rdf* rdf;
+	int labs;
+	uint16_t len;
+	/* qname */
+	rdf = ldns_dname_new_frm_str(strname);
+	if(!rdf) {
+		printf("cannot parse query name: '%s'\n", strname);
+		exit(1);
+	}
+	qinfo.qname = memdup(ldns_rdf_data(rdf), ldns_rdf_size(rdf));
+	labs = dname_count_size_labels(qinfo.qname, &qinfo.qname_len);
+	ldns_rdf_deep_free(rdf);
+	if(!qinfo.qname) fatal_exit("out of memory");
+
+	/* qtype and qclass */
+	qinfo.qtype = ldns_get_rr_type_by_name(strtype);
+	qinfo.qclass = ldns_get_rr_class_by_name(strclass);
+
+	/* make query */
+	qinfo_query_encode(buf, &qinfo);
+	ldns_buffer_write_u16_at(buf, 0, (uint16_t)id);
+	ldns_buffer_write_u16_at(buf, 2, BIT_RD);
+
+	/* send it */
+	len = (uint16_t)ldns_buffer_limit(buf);
+	len = htons(len);
+	if(write(fd, &len, sizeof(len)) < (ssize_t)sizeof(len)) {
+		perror("write() len failed");
+		exit(1);
+	}
+	if(write(fd, ldns_buffer_begin(buf), ldns_buffer_limit(buf)) < 
+		(ssize_t)ldns_buffer_limit(buf)) {
+		perror("write() data failed");
+		exit(1);
+	}
+
+	free(qinfo.qname);
+}
+
+/** receive DNS datagram over TCP and print it */
+static void
+recv_one(int fd, ldns_buffer* buf)
+{
+	uint16_t len;
+	ldns_pkt* pkt;
+	ldns_status status;
+	if(read(fd, &len, sizeof(len)) < (ssize_t)sizeof(len)) {
+		perror("read() len failed");
+		exit(1);
+	}
+	len = ntohs(len);
+	ldns_buffer_clear(buf);
+	ldns_buffer_set_limit(buf, len);
+	if(read(fd, ldns_buffer_begin(buf), len) < (ssize_t)len) {
+		perror("read() data failed");
+		exit(1);
+	}
+	printf("\nnext received packet\n");
+	log_buf(0, "data", buf);
+
+	status = ldns_wire2pkt(&pkt, ldns_buffer_begin(buf), len);
+	if(status != LDNS_STATUS_OK) {
+		printf("could not parse incoming packet: %s\n",
+			ldns_get_errorstr_by_id(status));
+		log_buf(0, "data was", buf);
+		exit(1);
+	}
+	ldns_pkt_print(stdout, pkt);
+	ldns_pkt_free(pkt);
+}
+
+/** send the TCP queries and print answers */
+static void
+send_em(char* svr, int num, char** qs)
+{
+	ldns_buffer* buf = ldns_buffer_new(65553);
+	int fd = open_svr(svr);
+	int i;
+	if(!buf) fatal_exit("out of memory");
+	for(i=0; i<num; i+=3) {
+		printf("\nNext query is %s %s %s\n", qs[i], qs[i+1], qs[i+2]);
+		write_q(fd, buf, i, qs[i], qs[i+1], qs[i+2]);
+		/* print at least one result */
+		recv_one(fd, buf);
+	}
+
+	close(fd);
+	ldns_buffer_free(buf);
+	printf("orderly exit\n");
+}
+
+/** SIGPIPE handler */
+static RETSIGTYPE sigh(int sig)
+{
+	if(sig == SIGPIPE) {
+		printf("got SIGPIPE, remote connection gone\n");
+		exit(1);
+	}
+	printf("Got unhandled signal %d\n", sig);
+	exit(1);
+}
+
+/** getopt global, in case header files fail to declare it. */
+extern int optind;
+/** getopt global, in case header files fail to declare it. */
+extern char* optarg;
+
+/** main program for streamtcp */
+int main(int argc, char** argv) 
+{
+	int c;
+	char* svr = "127.0.0.1";
+
+	/* lock debug start (if any) */
+	log_init(0, 0, 0);
+	checklock_start();
+
+	if(signal(SIGPIPE, &sigh) == SIG_ERR) {
+		perror("could not install signal handler");
+		return 1;
+	}
+
+	/* command line options */
+	if(argc == 1) {
+		usage(argv);
+	}
+	while( (c=getopt(argc, argv, "f:h")) != -1) {
+		switch(c) {
+			case 'f':
+				svr = optarg;
+				break;
+			case 'h':
+			case '?':
+			default:
+				usage(argv);
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if(argc % 3 != 0) {
+		printf("queries must be multiples of name,type,class\n");
+		return 1;
+	}
+	send_em(svr, argc, argv);
+	checklock_stop();
+	return 0;
+}

testcode/unitmain.c

@@ -89,6 +89,42 @@ alloc_test() {
 static void 
 net_test()
 {
+	char* t4[] = {"\000\000\000\000",
+		"\200\000\000\000",
+		"\300\000\000\000",
+		"\340\000\000\000",
+		"\360\000\000\000",
+		"\370\000\000\000",
+		"\374\000\000\000",
+		"\376\000\000\000",
+		"\377\000\000\000",
+		"\377\200\000\000",
+		"\377\300\000\000",
+		"\377\340\000\000",
+		"\377\360\000\000",
+		"\377\370\000\000",
+		"\377\374\000\000",
+		"\377\376\000\000",
+		"\377\377\000\000",
+		"\377\377\200\000",
+		"\377\377\300\000",
+		"\377\377\340\000",
+		"\377\377\360\000",
+		"\377\377\370\000",
+		"\377\377\374\000",
+		"\377\377\376\000",
+		"\377\377\377\000",
+		"\377\377\377\200",
+		"\377\377\377\300",
+		"\377\377\377\340",
+		"\377\377\377\360",
+		"\377\377\377\370",
+		"\377\377\377\374",
+		"\377\377\377\376",
+		"\377\377\377\377",
+		"\377\377\377\377",
+		"\377\377\377\377",
+	};
 	unit_assert( str_is_ip6("::") );
 	unit_assert( str_is_ip6("::1") );
 	unit_assert( str_is_ip6("2001:7b8:206:1:240:f4ff:fe37:8810") );
@@ -117,6 +153,129 @@ net_test()
 	unit_assert( !is_pow2(23) );
 	unit_assert( !is_pow2(257) );
 	unit_assert( !is_pow2(259) );
+
+	/* test addr_mask */
+	if(1) {
+		struct sockaddr_in a4;
+		struct sockaddr_in6 a6;
+		socklen_t l4 = (socklen_t)sizeof(a4);
+		socklen_t l6 = (socklen_t)sizeof(a6);
+		int i;
+		a4.sin_family = AF_INET;
+		a6.sin6_family = AF_INET6;
+		for(i=0; i<35; i++) {
+			/* address 255.255.255.255 */
+			memcpy(&a4.sin_addr, "\377\377\377\377", 4);
+			addr_mask((struct sockaddr_storage*)&a4, l4, i);
+			unit_assert(memcmp(&a4.sin_addr, t4[i], 4) == 0);
+		}
+		memcpy(&a6.sin6_addr, "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377", 16);
+		addr_mask((struct sockaddr_storage*)&a6, l6, 128);
+		unit_assert(memcmp(&a6.sin6_addr, "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377", 16) == 0);
+		addr_mask((struct sockaddr_storage*)&a6, l6, 122);
+		unit_assert(memcmp(&a6.sin6_addr, "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\300", 16) == 0);
+		addr_mask((struct sockaddr_storage*)&a6, l6, 120);
+		unit_assert(memcmp(&a6.sin6_addr, "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\000", 16) == 0);
+		addr_mask((struct sockaddr_storage*)&a6, l6, 64);
+		unit_assert(memcmp(&a6.sin6_addr, "\377\377\377\377\377\377\377\377\000\000\000\000\000\000\000\000", 16) == 0);
+		addr_mask((struct sockaddr_storage*)&a6, l6, 0);
+		unit_assert(memcmp(&a6.sin6_addr, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16) == 0);
+	}
+
+	/* test addr_in_common */
+	if(1) {
+		struct sockaddr_in a4, b4;
+		struct sockaddr_in6 a6, b6;
+		socklen_t l4 = (socklen_t)sizeof(a4);
+		socklen_t l6 = (socklen_t)sizeof(a6);
+		int i;
+		a4.sin_family = AF_INET;
+		b4.sin_family = AF_INET;
+		a6.sin6_family = AF_INET6;
+		b6.sin6_family = AF_INET6;
+		memcpy(&a4.sin_addr, "abcd", 4);
+		memcpy(&b4.sin_addr, "abcd", 4);
+		unit_assert(addr_in_common((struct sockaddr_storage*)&a4, 32,
+			(struct sockaddr_storage*)&b4, 32, l4) == 32);
+		unit_assert(addr_in_common((struct sockaddr_storage*)&a4, 34,
+			(struct sockaddr_storage*)&b4, 32, l4) == 32);
+		for(i=0; i<=32; i++) {
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a4, 32,
+				(struct sockaddr_storage*)&b4, i, l4) == i);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a4, i,
+				(struct sockaddr_storage*)&b4, 32, l4) == i);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a4, i,
+				(struct sockaddr_storage*)&b4, i, l4) == i);
+		}
+		for(i=0; i<=32; i++) {
+			memcpy(&a4.sin_addr, "\377\377\377\377", 4);
+			memcpy(&b4.sin_addr, t4[i], 4);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a4, 32,
+				(struct sockaddr_storage*)&b4, 32, l4) == i);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&b4, 32,
+				(struct sockaddr_storage*)&a4, 32, l4) == i);
+		}
+		memcpy(&a6.sin6_addr, "abcdefghabcdefgh", 16);
+		memcpy(&b6.sin6_addr, "abcdefghabcdefgh", 16);
+		unit_assert(addr_in_common((struct sockaddr_storage*)&a6, 128,
+			(struct sockaddr_storage*)&b6, 128, l6) == 128);
+		unit_assert(addr_in_common((struct sockaddr_storage*)&a6, 129,
+			(struct sockaddr_storage*)&b6, 128, l6) == 128);
+		for(i=0; i<=128; i++) {
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a6, 128,
+				(struct sockaddr_storage*)&b6, i, l6) == i);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a6, i,
+				(struct sockaddr_storage*)&b6, 128, l6) == i);
+			unit_assert(addr_in_common(
+				(struct sockaddr_storage*)&a6, i,
+				(struct sockaddr_storage*)&b6, i, l6) == i);
+		}
+	}
+}
+
+#include "util/config_file.h"
+/** test config_file: cfg_parse_memsize */
+static void
+config_memsize_test() 
+{
+	size_t v = 0;
+	if(0) {
+		/* these emit errors */
+		unit_assert( cfg_parse_memsize("", &v) == 0);
+		unit_assert( cfg_parse_memsize("bla", &v) == 0);
+		unit_assert( cfg_parse_memsize("nop", &v) == 0);
+		unit_assert( cfg_parse_memsize("n0b", &v) == 0);
+		unit_assert( cfg_parse_memsize("gb", &v) == 0);
+		unit_assert( cfg_parse_memsize("b", &v) == 0);
+		unit_assert( cfg_parse_memsize("kb", &v) == 0);
+		unit_assert( cfg_parse_memsize("kk kb", &v) == 0);
+	}
+	unit_assert( cfg_parse_memsize("0", &v) && v==0);
+	unit_assert( cfg_parse_memsize("1", &v) && v==1);
+	unit_assert( cfg_parse_memsize("10", &v) && v==10);
+	unit_assert( cfg_parse_memsize("10b", &v) && v==10);
+	unit_assert( cfg_parse_memsize("5b", &v) && v==5);
+	unit_assert( cfg_parse_memsize("1024", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("1k", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("1K", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("1Kb", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("1kb", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("1 kb", &v) && v==1024);
+	unit_assert( cfg_parse_memsize("10 kb", &v) && v==10240);
+	unit_assert( cfg_parse_memsize("2k", &v) && v==2048);
+	unit_assert( cfg_parse_memsize("2m", &v) && v==2048*1024);
+	unit_assert( cfg_parse_memsize("3M", &v) && v==3072*1024);
+	unit_assert( cfg_parse_memsize("40m", &v) && v==40960*1024);
+	unit_assert( cfg_parse_memsize("1G", &v) && v==1024*1024*1024);
+	unit_assert( cfg_parse_memsize("1 Gb", &v) && v==1024*1024*1024);
+	unit_assert( cfg_parse_memsize("0 Gb", &v) && v==0*1024*1024);
 }
 
 #include "util/rtt.h"
@@ -204,12 +363,12 @@ infra_test()
 static void
 rnd_test()
 {
-	struct ub_randstate r;
+	struct ub_randstate* r;
 	int num = 100, i;
 	long int a[100];
-	unit_assert( ub_initstate((unsigned)time(NULL), &r, 256) );
+	unit_assert( (r = ub_initstate((unsigned)time(NULL), NULL)) );
 	for(i=0; i<num; i++) {
-		a[i] = ub_random(&r);
+		a[i] = ub_random(r);
 		unit_assert(a[i] >= 0);
 		unit_assert((size_t)a[i] <= (size_t)RAND_MAX);
 		if(i > 5)
@@ -217,7 +376,7 @@ rnd_test()
 				a[i] != a[i-3] || a[i] != a[i-4] ||
 				a[i] != a[i-5] || a[i] != a[i-6]);
 	}
-	ub_randfree(&r);
+	ub_randfree(r);
 }
 
 /**
@@ -239,6 +398,7 @@ main(int argc, char* argv[])
 	rnd_test();
 	verify_test();
 	net_test();
+	config_memsize_test();
 	dname_test();
 	anchors_test();
 	rtt_test();

testcode/unitmain.h

@@ -45,7 +45,11 @@
 /** number of tests done */
 extern int testcount;
 /** test bool x, exits on failure, increases testcount. */
+#ifdef DEBUG_UNBOUND
 #define unit_assert(x) do {testcount++; log_assert(x);} while(0)
+#else
+#define unit_assert(x) do {testcount++; if(!(x)) { fprintf(stderr, "assertion failure %s:%d\n", __FILE__, __LINE__); exit(1);}} while(0)
+#endif
 
 /** unit test lruhashtable implementation */
 void lruhash_test();

testcode/unitverify.c

@@ -150,7 +150,7 @@ verifytest_rrset(struct module_env* env, struct val_env* ve,
 {
 	enum sec_status sec;
 	if(vsig) {
-		log_nametypeclass(VERB_DETAIL, "verify of rrset",
+		log_nametypeclass(VERB_QUERY, "verify of rrset",
 			rrset->rk.dname, ntohs(rrset->rk.type),
 			ntohs(rrset->rk.rrset_class));
 	}
@@ -237,7 +237,7 @@ dstest_entry(struct entry* e, struct alloc_cache* alloc,
 			printf("result(no)= %s\n", ret?"yes":"no");
 		}
 		unit_assert(!ret);
-		verbose(VERB_DETAIL, "DS fail: OK; matched unit test");
+		verbose(VERB_QUERY, "DS fail: OK; matched unit test");
 	} else {
 		fatal_exit("Bad qname in DS unit test, yes or no");
 	}
@@ -274,7 +274,7 @@ verifytest_file(const char* fname, const char* at_date)
 	ve.date_override = cfg_convert_timeval(at_date);
 	unit_assert(region && buf);
 	dnskey = extract_keys(list, &alloc, region, buf);
-	if(vsig) log_nametypeclass(VERB_DETAIL, "test dnskey",
+	if(vsig) log_nametypeclass(VERB_QUERY, "test dnskey",
 			dnskey->rk.dname, ntohs(dnskey->rk.type), 
 			ntohs(dnskey->rk.rrset_class));
 	/* ready to go! */

testdata/acl.rpl

@@ -0,0 +1,52 @@
+; config options
+server:
+	hide-identity: no
+	hide-version: no
+	identity: "test-identity"
+	version: "test-version"
+	access-control: 20.0.0.0/8 allow
+	access-control: 20.40.0.0/16 refuse
+	access-control: 20.40.80.0/24 deny
+
+CONFIG_END
+SCENARIO_BEGIN Test access control list
+
+; version.bind.
+; allow
+STEP 1 QUERY ADDRESS 20.1.2.3
+ENTRY_BEGIN
+SECTION QUESTION
+version.bind. CH TXT
+ENTRY_END
+STEP 2 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA
+SECTION QUESTION
+version.bind. CH TXT
+SECTION ANSWER
+version.bind. 0 CH TXT	"test-version"
+ENTRY_END
+
+; refuse
+STEP 3 QUERY ADDRESS 20.40.2.3
+ENTRY_BEGIN
+SECTION QUESTION
+version.bind. CH TXT
+ENTRY_END
+STEP 4 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR REFUSED
+ENTRY_END
+
+; deny (drop)
+STEP 5 QUERY ADDRESS 20.40.80.3
+ENTRY_BEGIN
+SECTION QUESTION
+version.bind. CH TXT
+ENTRY_END
+
+; no answer must be pending
+
+SCENARIO_END

testdata/local_nodefault.rpl

@@ -0,0 +1,60 @@
+; config options
+; The island of trust is at example.com
+server:
+	local-zone: "10.in-addr.arpa" nodefault
+
+stub-zone:
+	name: "."
+	stub-addr: 193.0.14.129 	# K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test local data with nodefault for as112 zone.
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+	ADDRESS 193.0.14.129 
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+. IN NS
+SECTION ANSWER
+. IN NS	K.ROOT-SERVERS.NET.
+SECTION ADDITIONAL
+K.ROOT-SERVERS.NET.	IN	A	193.0.14.129
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR AA NXDOMAIN
+SECTION QUESTION
+40.30.20.10.in-addr-arpa. IN PTR
+SECTION ANSWER
+SECTION AUTHORITY
+. IN SOA invalid. invalid. 1 2 3 4 5
+ENTRY_END
+RANGE_END
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD DO
+SECTION QUESTION
+40.30.20.10.in-addr-arpa. IN PTR
+ENTRY_END
+; not blocked!
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NXDOMAIN
+SECTION QUESTION
+40.30.20.10.in-addr-arpa. IN PTR
+SECTION ANSWER
+SECTION AUTHORITY
+. IN SOA invalid. invalid. 1 2 3 4 5
+ENTRY_END
+
+SCENARIO_END

testdata/localdata.rpl

@@ -0,0 +1,321 @@
+; config options
+server:
+	hide-identity: no
+	hide-version: no
+	identity: "test-identity"
+	version: "test-version"
+
+	; implicit transparent zone should not block id.server
+	local-data: "mydata.server. CH A 10.11.12.13"
+	local-data: "myd2.server. CH A 10.11.12.14"
+	local-data: 'myd3.server. CH TXT "a text record"'
+	; together implicit CH top domain .server is created transparent.
+
+	; static zone
+	local-zone: "local" static
+	local-data: "local SOA nobody nobody 1 2 3 4 5"
+	local-data: "serv.local. A 20.30.40.50"
+	; multiple RRs in this RRset.
+	local-data: "bla.bla.local. A 20.30.40.51"
+	local-data: "bla.bla.local. A 20.30.40.52"
+	local-data: "bla.bla.local. A 20.30.40.53"
+	
+	; static zone (no soa)
+	local-zone: "noso.local" static
+	local-data: "bla.bla.noso.local AAAA 2001::2"
+
+	; deny zone (no answer)
+	local-zone: "deny.top." deny
+	
+	; refuse zone (error)
+	local-zone: "refuse.top." refuse
+
+	; create implicit data in the IN domain as well
+	local-data: "a.a.implicit. A 20.30.41.50"
+	local-data: "b.a.implicit. A 20.30.42.50"
+	local-data: "b.b.implicit. A 20.30.43.50"
+	local-data: "b.c.implicit. A 20.30.45.50"
+	local-data: "c.c.implicit. A 20.30.44.50"
+
+CONFIG_END
+SCENARIO_BEGIN Test local data queries
+
+; id.server.
+STEP 1 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+id.server. CH TXT
+ENTRY_END
+STEP 2 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA
+SECTION QUESTION
+id.server. CH TXT
+SECTION ANSWER
+id.server. 0 CH TXT	"test-identity"
+ENTRY_END
+
+; mydata.server.
+STEP 3 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+mydata.server. CH A
+ENTRY_END
+STEP 4 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+mydata.server. CH A
+SECTION ANSWER
+mydata.server. 3600 CH A 10.11.12.13
+ENTRY_END
+
+; nodata with SOA
+STEP 5 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+local. IN A
+ENTRY_END
+STEP 6 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+local. IN A
+SECTION AUTHORITY
+local. 3600 IN SOA nobody nobody 1 2 3 4 5
+ENTRY_END
+
+; positive SOA
+STEP 7 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+local. IN SOA
+ENTRY_END
+STEP 8 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+local. IN SOA
+SECTION ANSWER
+local. 3600 IN SOA nobody nobody 1 2 3 4 5
+ENTRY_END
+
+; positive subdomain
+STEP 9 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+serv.local. IN A
+ENTRY_END
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+serv.local. IN A
+SECTION ANSWER
+serv.local. IN A 20.30.40.50
+ENTRY_END
+
+; no such type
+STEP 11 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+serv.local. IN MX
+ENTRY_END
+STEP 12 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+serv.local. IN MX
+SECTION AUTHORITY
+local. 3600 IN SOA nobody nobody 1 2 3 4 5
+ENTRY_END
+
+; no such type, empty nonterminal
+STEP 13 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+bla.local. IN MX
+ENTRY_END
+STEP 14 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+bla.local. IN MX
+SECTION AUTHORITY
+local. 3600 IN SOA nobody nobody 1 2 3 4 5
+ENTRY_END
+
+; nxdomain with SOA
+STEP 15 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+doing.local. IN MX
+ENTRY_END
+STEP 16 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA NXDOMAIN
+SECTION QUESTION
+doing.local. IN MX
+SECTION AUTHORITY
+local. 3600 IN SOA nobody nobody 1 2 3 4 5
+ENTRY_END
+
+; nxdomain without SOA
+STEP 17 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+doing.noso.local. IN MX
+ENTRY_END
+STEP 18 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA NXDOMAIN
+SECTION QUESTION
+doing.noso.local. IN MX
+ENTRY_END
+
+; positive multiple RR
+STEP 19 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+bla.bla.local. IN A
+ENTRY_END
+STEP 20 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+bla.bla.local. IN A
+SECTION ANSWER
+bla.bla.local. IN A 20.30.40.51
+bla.bla.local. IN A 20.30.40.52
+bla.bla.local. IN A 20.30.40.53
+ENTRY_END
+
+; second implicit transparent zone.
+STEP 21 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+b.b.implicit. IN A
+ENTRY_END
+STEP 22 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+b.b.implicit. IN A
+SECTION ANSWER
+b.b.implicit. 3600 IN A 20.30.43.50
+ENTRY_END
+
+; localhost A default
+STEP 30 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+localhost. IN A
+ENTRY_END
+STEP 31 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+localhost. IN A
+SECTION ANSWER
+localhost. 10800 IN A 127.0.0.1
+ENTRY_END
+
+; localhost AAAA default
+STEP 32 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+localhost. IN AAAA
+ENTRY_END
+STEP 33 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+localhost. IN AAAA
+SECTION ANSWER
+localhost. 10800 IN AAAA ::1
+ENTRY_END
+
+; localhost A reverse default
+STEP 34 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+1.0.0.127.in-addr.arpa. IN PTR
+ENTRY_END
+STEP 35 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+1.0.0.127.in-addr.arpa. IN PTR
+SECTION ANSWER
+1.0.0.127.in-addr.arpa. 10800 IN PTR localhost.
+ENTRY_END
+
+; localhost AAAA reverse default
+STEP 36 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. IN PTR
+ENTRY_END
+STEP 37 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA
+SECTION QUESTION
+1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. IN PTR
+SECTION ANSWER
+1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa. 10800 IN PTR localhost.
+ENTRY_END
+
+; blocked AS112 reverse default
+STEP 38 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+1.0.0.10.in-addr.arpa. IN PTR
+ENTRY_END
+STEP 39 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA NXDOMAIN
+SECTION QUESTION
+1.0.0.10.in-addr.arpa. IN PTR
+SECTION AUTHORITY
+10.in-addr.arpa. 10800 IN SOA localhost. nobody.invalid. 1 3600 1200 604800 10800
+ENTRY_END
+
+; refuse zone
+STEP 40 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+www.refuse.top. IN A
+ENTRY_END
+STEP 41 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RA AA REFUSED
+SECTION QUESTION
+www.refuse.top. IN A
+ENTRY_END
+
+; deny zone
+STEP 42 QUERY
+ENTRY_BEGIN
+SECTION QUESTION
+www.deny.top. IN A
+ENTRY_END
+; no answer is checked at exit of testbound.
+
+SCENARIO_END

testdata/val_cnamenx_dblnsec.rpl

@@ -0,0 +1,150 @@
+; config options
+; The island of trust is at example.com
+server:
+	trust-anchor: "example.com.    3600    IN      DS      2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
+	val-override-date: "20070916134226"
+
+stub-zone:
+	name: "."
+	stub-addr: 193.0.14.129 	# K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test validator with cname-nxdomain for duplicate NSEC detection
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+	ADDRESS 193.0.14.129 
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+. IN NS
+SECTION ANSWER
+. IN NS	K.ROOT-SERVERS.NET.
+SECTION ADDITIONAL
+K.ROOT-SERVERS.NET.	IN	A	193.0.14.129
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+cname.example.com. IN A
+SECTION AUTHORITY
+com.	IN NS	a.gtld-servers.net.
+SECTION ADDITIONAL
+a.gtld-servers.net.	IN 	A	192.5.6.30
+ENTRY_END
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+	ADDRESS 192.5.6.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+cname.example.com. IN A
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+RANGE_END
+
+; ns.example.com.
+RANGE_BEGIN 0 100
+	ADDRESS 1.2.3.4
+
+; response to DNSKEY priming query
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+example.com. IN DNSKEY
+SECTION ANSWER
+example.com.    3600    IN      DNSKEY  256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
+example.com.    3600    IN      RRSIG   DNSKEY 3 2 3600 20070926134802 20070829134802 2854 example.com. MCwCFG1yhRNtTEa3Eno2zhVVuy2EJX3wAhQeLyUp6+UXcpC5qGNu9tkrTEgPUg== ;{id = 2854}
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+example.com.    3600    IN      RRSIG   NS 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFQCN+qHdJxoI/2tNKwsb08pra/G7aAIUAWA5sDdJTbrXA1/3OaesGBAO3sI= ;{id = 2854}
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ns.example.com. 3600    IN      RRSIG   A 3 3 3600 20070926135752 20070829135752 2854 example.com. MC0CFQCMSWxVehgOQLoYclB9PIAbNP229AIUeH0vNNGJhjnZiqgIOKvs1EhzqAo= ;{id = 2854}
+ENTRY_END
+
+; response to query of interest
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR AA NXDOMAIN
+SECTION QUESTION
+cname.example.com. IN A
+SECTION ANSWER
+cname.example.com.      3600    IN      CNAME   www.example.com.
+cname.example.com.      3600    IN      RRSIG   CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFBhJC8qi+g+EOYqzT2q6RxE8Im09AhUAotz8NFnpY+cpEDNBKjM940a74/E= ;{id = 2854}
+SECTION AUTHORITY
+; already includes the necessary NSECs
+example.com.	IN SOA	ns.example.com. hostmaster.example.com. 2007090400 28800 7200 604800 18000
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFCNGZ+/OfElYQMCZ77O9Lw9rhk7PAhUAmDcvTAst6Bq83qPq3r6c/Dm1nFc= ;{id = 2854}
+; wildcard denial
+example.com.    IN      NSEC    abc.example.com. SOA NS DNSKEY NSEC RRSIG
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFHV2IBWyTmDJvZ+sT+WsGrJX0op/AhQkAijjnjPAtx/tNub2FAGqcexJSg== ;{id = 2854}
+; qname denial
+wab.example.com.        IN      NSEC    wzz.example.com. A NSEC RRSIG
+wab.example.com.        3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFG5DZSEIZC088rjcB1e6sQx8nQz4AhUAtQ09tP1YYLJkhL/Wg1KV2pW4Ivk= ;{id = 2854}
+SECTIO ADDITIONAL
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR AA NXDOMAIN
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+SECTION AUTHORITY
+example.com.	IN SOA	ns.example.com. hostmaster.example.com. 2007090400 28800 7200 604800 18000
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFCNGZ+/OfElYQMCZ77O9Lw9rhk7PAhUAmDcvTAst6Bq83qPq3r6c/Dm1nFc= ;{id = 2854}
+; wildcard denial
+example.com.    IN      NSEC    abc.example.com. SOA NS DNSKEY NSEC RRSIG
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFHV2IBWyTmDJvZ+sT+WsGrJX0op/AhQkAijjnjPAtx/tNub2FAGqcexJSg== ;{id = 2854}
+; qname denial
+wab.example.com.        IN      NSEC    wzz.example.com. A NSEC RRSIG
+wab.example.com.        3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFG5DZSEIZC088rjcB1e6sQx8nQz4AhUAtQ09tP1YYLJkhL/Wg1KV2pW4Ivk= ;{id = 2854}
+SECTIO ADDITIONAL
+ENTRY_END
+RANGE_END
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD DO
+SECTION QUESTION
+cname.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA AD NOERROR
+SECTION QUESTION
+cname.example.com. IN A
+SECTION ANSWER
+cname.example.com.      3600    IN      CNAME   www.example.com.
+cname.example.com.      3600    IN      RRSIG   CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFBhJC8qi+g+EOYqzT2q6RxE8Im09AhUAotz8NFnpY+cpEDNBKjM940a74/E= ;{id = 2854}
+SECTION AUTHORITY
+example.com.	IN SOA	ns.example.com. hostmaster.example.com. 2007090400 28800 7200 604800 18000
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFCNGZ+/OfElYQMCZ77O9Lw9rhk7PAhUAmDcvTAst6Bq83qPq3r6c/Dm1nFc= ;{id = 2854}
+example.com.    IN      NSEC    abc.example.com. SOA NS DNSKEY NSEC RRSIG
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFHV2IBWyTmDJvZ+sT+WsGrJX0op/AhQkAijjnjPAtx/tNub2FAGqcexJSg== ;{id = 2854}
+wab.example.com.        IN      NSEC    wzz.example.com. A NSEC RRSIG
+wab.example.com.        3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFG5DZSEIZC088rjcB1e6sQx8nQz4AhUAtQ09tP1YYLJkhL/Wg1KV2pW4Ivk= ;{id = 2854}
+SECTION ADDITIONAL
+ENTRY_END
+
+SCENARIO_END

testdata/val_cnamenx_rcodenx.rpl

@@ -0,0 +1,183 @@
+; config options
+; The island of trust is at example.com
+server:
+	trust-anchor: "example.com.    3600    IN      DS      2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
+	trust-anchor: "example.net.    3600    IN      DNSKEY  256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}"
+	val-override-date: "20070916134226"
+
+stub-zone:
+	name: "."
+	stub-addr: 193.0.14.129 	# K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test validator with cname-nxdomain with rcode nxdomain 
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+	ADDRESS 193.0.14.129 
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+. IN NS
+SECTION ANSWER
+. IN NS	K.ROOT-SERVERS.NET.
+SECTION ADDITIONAL
+K.ROOT-SERVERS.NET.	IN	A	193.0.14.129
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+www.example.com. IN A
+SECTION AUTHORITY
+com.	IN NS	a.gtld-servers.net.
+SECTION ADDITIONAL
+a.gtld-servers.net.	IN 	A	192.5.6.30
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+www.example.net. IN A
+SECTION AUTHORITY
+net.	IN NS	a.gtld-servers.net.
+SECTION ADDITIONAL
+a.gtld-servers.net.	IN 	A	192.5.6.30
+ENTRY_END
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+	ADDRESS 192.5.6.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+www.example.com. IN A
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+www.example.net. IN A
+SECTION AUTHORITY
+example.net.	IN NS	ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.		IN 	A	1.2.3.5
+ENTRY_END
+RANGE_END
+
+; ns.example.com.
+RANGE_BEGIN 0 100
+	ADDRESS 1.2.3.4
+
+; response to DNSKEY priming query
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+example.com. IN DNSKEY
+SECTION ANSWER
+example.com.    3600    IN      DNSKEY  256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
+example.com. 3600    IN      RRSIG   DNSKEY DSA 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFBQRtlR4BEv9ohi+PGFjp+AHsJuHAhRCvz0shggvnvI88DFnBDCczHUcVA== ;{id = 2854}
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+example.com.    3600    IN      RRSIG   NS 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFQCN+qHdJxoI/2tNKwsb08pra/G7aAIUAWA5sDdJTbrXA1/3OaesGBAO3sI= ;{id = 2854}
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ns.example.com. 3600    IN      RRSIG   A 3 3 3600 20070926135752 20070829135752 2854 example.com. MC0CFQCMSWxVehgOQLoYclB9PIAbNP229AIUeH0vNNGJhjnZiqgIOKvs1EhzqAo= ;{id = 2854}
+ENTRY_END
+
+; response to query of interest
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+www.example.com.  3600    IN      CNAME   www.example.net.
+www.example.com.        3600    IN      RRSIG   CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFGtYzScyRnHV8U/jOIPYwrlI9t3oAhRF0PIf+IthUR7uCWIvskWp5CfReQ== ;{id = 2854}
+SECTION AUTHORITY
+SECTION ADDITIONAL
+ENTRY_END
+RANGE_END
+
+; ns.example.net.
+RANGE_BEGIN 0 100
+	ADDRESS 1.2.3.5
+
+; response to DNSKEY priming query
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+example.net. IN DNSKEY
+SECTION ANSWER
+example.net.    3600    IN      DNSKEY  256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
+example.net.    3600    IN      RRSIG   DNSKEY RSASHA1 2 3600 20070926134150 20070829134150 30899 example.net. hiFzlQ8VoYgCuvIsfVuxC3mfJDqsTh0yc6abs5xMx5uEcIjb0dndFQx7INOM+imlzveEN73Hqp4OLFpFhsWLlw== ;{id = 30899}
+SECTION AUTHORITY
+example.net.	IN NS	ns.example.net.
+example.net.    3600    IN      RRSIG   NS RSASHA1 2 3600 20070926134150 20070829134150 30899 example.net. E8JX0l4B+cSR5bkHQwOJy1pBmlLMTYCJ8EwfNMU/eCv0YhKwo26rHhn52FGisgv+Nwp7/NbhHqQ+kJgoZC94XA== ;{id = 30899}
+SECTION ADDITIONAL
+ns.example.net.		IN 	A	1.2.3.5
+ns.example.net. 3600    IN      RRSIG   A RSASHA1 3 3600 20070926134150 20070829134150 30899 example.net. x+tQMC9FhzT7Fcy1pM5NrOC7E8nLd7THPI3C6ie4EwL8PrxllqlR3q/DKB0d/m0qCOPcgN6HFOYURV1s4uAcsw== ;{id = 30899}
+ENTRY_END
+
+; response to query of interest
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.example.net. IN A
+SECTION ANSWER
+SECTION AUTHORITY
+example.net.	IN	NSEC	abc.example.net. SOA NS DNSKEY NSEC RRSIG
+example.net.    3600    IN      RRSIG   NSEC 5 2 3600 20070926134150 20070829134150 30899 example.net. SEHthmjHyqGlzaOp3Dx6Jn5Fnvvtknw/IF6YSFY8NZLe+YSh1oRJbdEkQ8G92IT08n1jSN6jvKRsFBOUoFOQAw== ;{id = 30899}
+wab.example.net.	IN	NSEC	wzz.example.net. A NSEC RRSIG
+wab.example.net.        3600    IN      RRSIG   NSEC 5 3 3600 20070926134150 20070829134150 30899 example.net. gl8vkI3xfSWx4Pyv5OdOthiewE6u/13kclY7UG9ptuFBddamdJO3RQqyxM6Xcmq+ToO4kMCCyaKijp01gTDoGg== ;{id = 30899}
+SECTION ADDITIONAL
+ENTRY_END
+RANGE_END
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD DO
+SECTION QUESTION
+www.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA AD NOERROR
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+www.example.com. IN	CNAME	www.example.net.
+www.example.com.        3600    IN      RRSIG   CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFGtYzScyRnHV8U/jOIPYwrlI9t3oAhRF0PIf+IthUR7uCWIvskWp5CfReQ== ;{id = 2854}
+SECTION AUTHORITY
+example.net.	IN	NSEC	abc.example.net. SOA NS DNSKEY NSEC RRSIG
+example.net.    3600    IN      RRSIG   NSEC 5 2 3600 20070926134150 20070829134150 30899 example.net. SEHthmjHyqGlzaOp3Dx6Jn5Fnvvtknw/IF6YSFY8NZLe+YSh1oRJbdEkQ8G92IT08n1jSN6jvKRsFBOUoFOQAw== ;{id = 30899}
+wab.example.net.	IN	NSEC	wzz.example.net. A NSEC RRSIG
+wab.example.net.        3600    IN      RRSIG   NSEC 5 3 3600 20070926134150 20070829134150 30899 example.net. gl8vkI3xfSWx4Pyv5OdOthiewE6u/13kclY7UG9ptuFBddamdJO3RQqyxM6Xcmq+ToO4kMCCyaKijp01gTDoGg== ;{id = 30899}
+SECTION ADDITIONAL
+ENTRY_END
+
+SCENARIO_END

util/config_file.c

@@ -45,6 +45,7 @@
 #include "util/configyyrename.h"
 #include "util/config_file.h"
 #include "util/configparser.h"
+#include "util/net_help.h"
 /** global config during parsing */
 struct config_parser_state* cfg_parser = 0;
 /** lex in file */
@@ -69,6 +70,7 @@ config_create()
 		return NULL;
 	/* the defaults if no config is present */
 	cfg->verbosity = 1;
+	cfg->stat_interval = 0;
 	cfg->num_threads = 1;
 	cfg->port = UNBOUND_DNS_PORT;
 	cfg->do_ip4 = 1;
@@ -89,7 +91,7 @@ config_create()
 	cfg->host_ttl = 900;
 	cfg->lame_ttl = 900;
 	cfg->bogus_ttl = 900;
-	cfg->max_ttl = 3600 * 24 * 10;
+	cfg->max_ttl = 3600 * 24;
 	cfg->infra_cache_slabs = 4;
 	cfg->infra_cache_numhosts = 10000;
 	cfg->infra_cache_lame_size = 10240; /* easily 40 or more entries */
@@ -104,12 +106,14 @@ config_create()
 	cfg->donotquery_localhost = 1;
 	cfg->root_hints = NULL;
 	cfg->do_daemonize = 1;
+	cfg->if_automatic = 0;
 	cfg->num_ifs = 0;
 	cfg->ifs = NULL;
 	cfg->num_out_ifs = 0;
 	cfg->out_ifs = NULL;
 	cfg->stubs = NULL;
 	cfg->forwards = NULL;
+	cfg->acls = NULL;
 	cfg->harden_short_bufsize = 0;
 	cfg->harden_large_queries = 0;
 	cfg->harden_glue = 1;
@@ -126,6 +130,11 @@ config_create()
 	cfg->val_permissive_mode = 0;
 	cfg->key_cache_size = 4 * 1024 * 1024;
 	cfg->key_cache_slabs = 4;
+	cfg->local_zones = NULL;
+	cfg->local_zones_nodefault = NULL;
+	cfg->local_data = NULL;
+	cfg->donotquery_localhost = 0; /* allow, so that you can ask a
+		forward nameserver running on localhost */
 	if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit;
 	if(!(cfg->val_nsec3_key_iterations = 
 		strdup("1024 150 2048 500 4096 2500"))) goto error_exit;
@@ -135,6 +144,188 @@ error_exit:
 	return NULL;
 }
 
+struct config_file* config_create_forlib()
+{
+	struct config_file* cfg = config_create();
+	if(!cfg) return NULL;
+	/* modifications for library use, less verbose, less memory */
+	free(cfg->chrootdir);
+	cfg->chrootdir = NULL;
+	cfg->verbosity = 0;
+	cfg->outgoing_num_tcp = 2;
+	cfg->msg_cache_size = 1024*1024;
+	cfg->msg_cache_slabs = 1;
+	cfg->rrset_cache_size = 1024*1024;
+	cfg->rrset_cache_slabs = 1;
+	cfg->infra_cache_slabs = 1;
+	cfg->use_syslog = 0;
+	cfg->key_cache_size = 1024*1024;
+	cfg->key_cache_slabs = 1;
+	return cfg;
+}
+
+/** check that the value passed is >= 0 */
+#define IS_NUMBER_OR_ZERO \
+	if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
+/** check that the value passed is > 0 */
+#define IS_NONZERO_NUMBER \
+	if(atoi(val) == 0) return 0
+/** check that the value passed is not 0 and a power of 2 */
+#define IS_POW2_NUMBER \
+	if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
+/** check that the value passed is yes or no */
+#define IS_YES_OR_NO \
+	if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
+
+int config_set_option(struct config_file* cfg, const char* opt,
+        const char* val)
+{
+	if(strcmp(opt, "verbosity:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->verbosity = atoi(val);
+	} else if(strcmp(opt, "statistics-interval:") == 0) {
+		if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
+			cfg->stat_interval = 0;
+		else if(atoi(val) == 0)
+			return 0;
+		else cfg->stat_interval = atoi(val);
+	} else if(strcmp(opt, "num_threads:") == 0) {
+		/* not supported, library must have 1 thread in bgworker */
+		return 0;
+	} else if(strcmp(opt, "do-ip4:") == 0) {
+		IS_YES_OR_NO;
+		cfg->do_ip4 = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "do-ip6:") == 0) {
+		IS_YES_OR_NO;
+		cfg->do_ip6 = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "do-udp:") == 0) {
+		IS_YES_OR_NO;
+		cfg->do_udp = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "do-tcp:") == 0) {
+		IS_YES_OR_NO;
+		cfg->do_tcp = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "outgoing-port:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->outgoing_base_port = atoi(val);
+	} else if(strcmp(opt, "outgoing-range:") == 0) {
+		IS_NONZERO_NUMBER;
+		cfg->outgoing_num_ports = atoi(val);
+	} else if(strcmp(opt, "outgoing-num-tcp:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->outgoing_num_tcp = (size_t)atoi(val);
+	} else if(strcmp(opt, "incoming-num-tcp:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->incoming_num_tcp = (size_t)atoi(val);
+	} else if(strcmp(opt, "msg-buffer-size:") == 0) {
+		IS_NONZERO_NUMBER;
+		cfg->msg_buffer_size = (size_t)atoi(val);
+	} else if(strcmp(opt, "msg-cache-size:") == 0) {
+		return cfg_parse_memsize(val, &cfg->msg_cache_size);
+	} else if(strcmp(opt, "msg-cache-slabs:") == 0) {
+		IS_POW2_NUMBER;
+		cfg->msg_cache_slabs = (size_t)atoi(val);
+	} else if(strcmp(opt, "num-queries-per-thread:") == 0) {
+		IS_NONZERO_NUMBER;
+		cfg->num_queries_per_thread = (size_t)atoi(val);
+	} else if(strcmp(opt, "rrset-cache-size:") == 0) {
+		return cfg_parse_memsize(val, &cfg->rrset_cache_size);
+	} else if(strcmp(opt, "rrset-cache-slabs:") == 0) {
+		IS_POW2_NUMBER;
+		cfg->rrset_cache_slabs = (size_t)atoi(val);
+	} else if(strcmp(opt, "cache-max-ttl:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->max_ttl = atoi(val);
+	} else if(strcmp(opt, "infra-host-ttl:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->host_ttl = atoi(val);
+	} else if(strcmp(opt, "infra-lame-ttl:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->lame_ttl = atoi(val);
+	} else if(strcmp(opt, "infra-cache-slabs:") == 0) {
+		IS_POW2_NUMBER;
+		cfg->infra_cache_slabs = (size_t)atoi(val);
+	} else if(strcmp(opt, "infra-cache-numhosts:") == 0) {
+		IS_NONZERO_NUMBER;
+		cfg->infra_cache_numhosts = (size_t)atoi(val);
+	} else if(strcmp(opt, "infra-cache-lame-size:") == 0) {
+		return cfg_parse_memsize(val, &cfg->infra_cache_lame_size);
+	} else if(strcmp(opt, "logfile:") == 0) {
+		cfg->use_syslog = 0;
+		free(cfg->logfile);
+		return (cfg->logfile = strdup(val)) != NULL;
+	} else if(strcmp(opt, "use-syslog:") == 0) {
+		IS_YES_OR_NO;
+		cfg->use_syslog = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "root-hints:") == 0) {
+		return cfg_strlist_insert(&cfg->root_hints, strdup(val));
+	} else if(strcmp(opt, "target-fetch-policy:") == 0) {
+		free(cfg->target_fetch_policy);
+		return (cfg->target_fetch_policy = strdup(val)) != NULL;
+	} else if(strcmp(opt, "harden-glue:") == 0) {
+		IS_YES_OR_NO;
+		cfg->harden_glue = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "harden-short-bufsize:") == 0) {
+		IS_YES_OR_NO;
+		cfg->harden_short_bufsize = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "harden-large-queries:") == 0) {
+		IS_YES_OR_NO;
+		cfg->harden_large_queries = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "harden-dnssec-stripped:") == 0) {
+		IS_YES_OR_NO;
+		cfg->harden_dnssec_stripped = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "do-not-query-localhost:") == 0) {
+		IS_YES_OR_NO;
+		cfg->donotquery_localhost = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "do-not-query-address:") == 0) {
+		return cfg_strlist_insert(&cfg->donotqueryaddrs, strdup(val));
+	} else if(strcmp(opt, "trust-anchor-file:") == 0) {
+		return cfg_strlist_insert(&cfg->trust_anchor_file_list, 
+			strdup(val));
+	} else if(strcmp(opt, "trust-anchor:") == 0) {
+		return cfg_strlist_insert(&cfg->trust_anchor_list, 
+			strdup(val));
+	} else if(strcmp(opt, "trusted-keys-file:") == 0) {
+		return cfg_strlist_insert(&cfg->trusted_keys_file_list, 
+			strdup(val));
+	} else if(strcmp(opt, "val-override-date:") == 0) {
+		if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
+			cfg->val_date_override = 0;
+		} else if(strlen(val) == 14) {
+			cfg->val_date_override = cfg_convert_timeval(val);
+			return cfg->val_date_override != 0;
+		} else {
+			if(atoi(val) == 0) return 0;
+			cfg->val_date_override = (uint32_t)atoi(val);
+		}
+	} else if(strcmp(opt, "val-bogus-ttl:") == 0) {
+		IS_NUMBER_OR_ZERO;
+		cfg->bogus_ttl = atoi(val);
+	} else if(strcmp(opt, "val-clean-additional:") == 0) {
+		IS_YES_OR_NO;
+		cfg->val_clean_additional = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "val-permissive-mode:") == 0) {
+		IS_YES_OR_NO;
+		cfg->val_permissive_mode = (strcmp(val, "yes") == 0);
+	} else if(strcmp(opt, "val-nsec3-keysize-iterations:") == 0) {
+		free(cfg->val_nsec3_key_iterations);
+		return (cfg->val_nsec3_key_iterations = strdup(val)) != NULL;
+	} else if(strcmp(opt, "key-cache-size:") == 0) {
+		return cfg_parse_memsize(val, &cfg->key_cache_size);
+	} else if(strcmp(opt, "key-cache-slabs:") == 0) {
+		IS_POW2_NUMBER;
+		cfg->key_cache_slabs = (size_t)atoi(val);
+	} else if(strcmp(opt, "local-data:") == 0) {
+		return cfg_strlist_insert(&cfg->local_data, strdup(val));
+	} else if(strcmp(opt, "module-config:") == 0) {
+		free(cfg->module_conf);
+		return (cfg->module_conf = strdup(val)) != NULL;
+	} else {
+		/* unknown or unsupported (from the library interface) */
+		return 0;
+	}
+	return 1;
+}
+
 /** initialize the global cfg_parser object */
 static void
 create_cfg_parser(struct config_file* cfg, char* filename)
@@ -171,8 +362,7 @@ config_read(struct config_file* cfg, char* filename)
 	return 1;
 }
 
-/** delete config strlist */
-static void
+void
 config_delstrlist(struct config_strlist* p)
 {
 	struct config_strlist *np;
@@ -184,8 +374,20 @@ config_delstrlist(struct config_strlist* p)
 	}
 }
 
-/** delete config stublist */
-static void
+void
+config_deldblstrlist(struct config_str2list* p)
+{
+	struct config_str2list *np;
+	while(p) {
+		np = p->next;
+		free(p->str);
+		free(p->str2);
+		free(p);
+		p = np;
+	}
+}
+
+void
 config_delstubs(struct config_stub* p)
 {
 	struct config_stub* np;
@@ -231,7 +433,11 @@ config_delete(struct config_file* cfg)
 	config_delstrlist(cfg->trust_anchor_file_list);
 	config_delstrlist(cfg->trusted_keys_file_list);
 	config_delstrlist(cfg->trust_anchor_list);
+	config_deldblstrlist(cfg->acls);
 	free(cfg->val_nsec3_key_iterations);
+	config_deldblstrlist(cfg->local_zones);
+	config_delstrlist(cfg->local_zones_nodefault);
+	config_delstrlist(cfg->local_data);
 	free(cfg);
 }
 
@@ -281,12 +487,30 @@ cfg_strlist_insert(struct config_strlist** head, char* item)
 	return 1;
 }
 
+int 
+cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
+{
+	struct config_str2list *s;
+	if(!item || !i2 || !head)
+		return 0;
+	s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
+	if(!s)
+		return 0;
+	s->str = item;
+	s->str2 = i2;
+	s->next = *head;
+	*head = s;
+	return 1;
+}
+
 uint32_t 
 cfg_convert_timeval(const char* str)
 {
 	uint32_t t;
 	struct tm tm;
 	memset(&tm, 0, sizeof(tm));
+	if(strlen(str) < 14)
+		return 0;
 	if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 
 		&tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
 		return 0;
@@ -329,6 +553,60 @@ cfg_count_numbers(const char* s)
         return num;
 }
 
+/** all digit number */
+static int isalldigit(const char* str, size_t l)
+{
+	size_t i;
+	for(i=0; i<l; i++)
+		if(!isdigit(str[i]))
+			return 0;
+	return 1;
+}
+
+int 
+cfg_parse_memsize(const char* str, size_t* res)
+{
+	size_t len = (size_t)strlen(str);
+	size_t mult = 1;
+	if(!str || len == 0) {
+		log_err("not a size: '%s'", str);
+		return 0;
+	}
+	if(isalldigit(str, len)) {
+		*res = (size_t)atol(str);
+		return 1;
+	}
+	/* check appended num */
+	while(len>0 && str[len-1]==' ')
+		len--;
+	if(len > 1 && str[len-1] == 'b') 
+		len--;
+	else if(len > 1 && str[len-1] == 'B') 
+		len--;
+	
+	if(len > 1 && tolower(str[len-1]) == 'g')
+		mult = 1024*1024*1024;
+	else if(len > 1 && tolower(str[len-1]) == 'm')
+		mult = 1024*1024;
+	else if(len > 1 && tolower(str[len-1]) == 'k')
+		mult = 1024;
+	else if(len > 0 && isdigit(str[len-1]))
+		mult = 1;
+	else {
+		log_err("unknown size specifier: '%s'", str);
+		return 0;
+	}
+	while(len>1 && str[len-2]==' ')
+		len--;
+
+	if(!isalldigit(str, len-1)) {
+		log_err("unknown size specifier: '%s'", str);
+		return 0;
+	}
+	*res = ((size_t)atol(str)) * mult;
+	return 1;
+}
+
 /** the MAX_TTL global */
 extern uint32_t MAX_TTL;
 
@@ -337,3 +615,4 @@ config_apply(struct config_file* config)
 {
 	MAX_TTL = (uint32_t)config->max_ttl;
 }
+

util/config_file.h

@@ -43,6 +43,7 @@
 #define UTIL_CONFIG_FILE_H
 struct config_stub;
 struct config_strlist;
+struct config_str2list;
 
 /**
  * The configuration options.
@@ -51,6 +52,8 @@ struct config_strlist;
 struct config_file {
 	/** verbosity level as specified in the config file */
 	int verbosity;
+	/** statistics interval (in seconds) */
+	int stat_interval;
 
 	/** number of threads to create */
 	int num_threads;
@@ -101,6 +104,10 @@ struct config_file {
 	/** the target fetch policy for the iterator */
 	char* target_fetch_policy;
 
+	/** automatic interface for incoming messages. Uses ipv6 remapping,
+	 * and recvmsg/sendmsg ancillary data to detect interfaces, boolean */
+	int if_automatic;
+
 	/** number of interfaces to open. If 0 default all interfaces. */
 	int num_ifs;
 	/** interface description strings (IP addresses) */
@@ -120,6 +127,8 @@ struct config_file {
 	struct config_stub* forwards;
 	/** list of donotquery addresses, linked list */
 	struct config_strlist* donotqueryaddrs;
+	/** list of access control entries, linked list */
+	struct config_str2list* acls;
 	/** use default localhost donotqueryaddr entries */
 	int donotquery_localhost;
 
@@ -183,6 +192,13 @@ struct config_file {
 	/** slabs in the key cache. */
 	size_t key_cache_slabs;
 
+	/** local zones config */
+	struct config_str2list* local_zones;
+	/** local zones nodefault list */
+	struct config_strlist* local_zones_nodefault;
+	/** local data RRs configged */
+	struct config_strlist* local_data;
+
 	/** daemonize, i.e. fork into the background. */
 	int do_daemonize;
 };
@@ -211,12 +227,30 @@ struct config_strlist {
 	char* str;
 };
 
+/**
+ * List of two strings for config options
+ */
+struct config_str2list {
+	/** next item in list */
+	struct config_str2list* next;
+	/** first string */
+	char* str;
+	/** second string */
+	char* str2;
+};
+
 /**
  * Create config file structure. Filled with default values.
  * @return: the new structure or NULL on memory error.
  */
 struct config_file* config_create();
 
+/**
+ * Create config file structure for library use. Filled with default values.
+ * @return: the new structure or NULL on memory error.
+ */
+struct config_file* config_create_forlib();
+
 /**
  * Read the config file from the specified filename.
  * @param config: where options are stored into, must be freshly created.
@@ -237,6 +271,17 @@ void config_delete(struct config_file* config);
  */
 void config_apply(struct config_file* config);
 
+/**
+ * Set the given keyword to the given value.
+ * @param config: where to store config
+ * @param option: option name, including the ':' character.
+ * @param value: value, this string is copied if needed, or parsed.
+ * 	The caller owns the value string.
+ * @return 0 on error (malloc or syntax error).
+ */
+int config_set_option(struct config_file* config, const char* option,
+	const char* value);
+
 /**
  * Insert string into strlist.
  * @param head: pointer to strlist head variable.
@@ -245,6 +290,33 @@ void config_apply(struct config_file* config);
  */
 int cfg_strlist_insert(struct config_strlist** head, char* item);
 
+/**
+ * Insert string into str2list.
+ * @param head: pointer to str2list head variable.
+ * @param item: new item. malloced by caller. If NULL the insertion fails.
+ * @param i2: 2nd string, malloced by caller. If NULL the insertion fails.
+ * @return: true on success.
+ */
+int cfg_str2list_insert(struct config_str2list** head, char* item, char* i2);
+
+/**
+ * Delete items in config string list.
+ * @param list: list.
+ */
+void config_delstrlist(struct config_strlist* list);
+
+/**
+ * Delete items in config double string list.
+ * @param list: list.
+ */
+void config_deldblstrlist(struct config_str2list* list);
+
+/**
+ * Delete items in config stub list.
+ * @param list: list.
+ */
+void config_delstubs(struct config_stub* list);
+
 /**
  * Convert 14digit to time value
  * @param str: string of 14 digits
@@ -264,6 +336,17 @@ uint32_t cfg_convert_timeval(const char* str);
  */
 int cfg_count_numbers(const char* str);
 
+/**
+ * Convert a 'nice' memory or file size into a bytecount
+ * From '100k' to 102400. and so on. Understands kKmMgG.
+ * k=1024, m=1024*1024, g=1024*1024*1024.
+ * @param str: string
+ * @param res: result is stored here, size in bytes.
+ * @return: true if parsed correctly, or 0 on a parse error (and an error 
+ * is logged).
+ */
+int cfg_parse_memsize(const char* str, size_t* res);
+
 /**
  * Used during options parsing
  */