mirror of
https://github.com/NLnetLabs/unbound.git
synced 2026-08-17 21:25:50 +02:00
- Fix for fast_reload that removes an auth zone while its
lookups are in progress, for a primary name. Also after the change, it no longer picks up the old results. Thanks to Qifan Zhang, Palo Alto Networks, for the report.
This commit is contained in:
W.C.A. Wijngaards
@@ -21,6 +21,10 @@
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it in progress with subnet loaded, deregisters the
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callback. Thanks to Qifan Zhang, Palo Alto Networks,
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for the report.
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- Fix for fast_reload that removes an auth zone while its
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lookups are in progress, for a primary name. Also after the
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change, it no longer picks up the old results. Thanks to
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Qifan Zhang, Palo Alto Networks, for the report.
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12 June 2026: Wouter
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- Fix that for auth-zone and rpz zones the allow-notify
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+84
-10
@@ -5482,6 +5482,32 @@ xfr_process_chunk_list(struct auth_xfer* xfr, struct module_env* env,
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return 1;
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}
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/** Stop lookup using callback */
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static void
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xfr_stop_lookup(struct auth_master** lookup_target, void* lookup_unique_info,
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int lookup_aaaa, uint16_t dclass, struct mesh_area* mesh,
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mesh_cb_func_type cb, void* cb_arg)
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{
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struct query_info qinfo;
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uint8_t dname[LDNS_MAX_DOMAINLEN+1];
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if(!*lookup_target) return;
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qinfo.qname_len = sizeof(dname);
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if(sldns_str2wire_dname_buf((*lookup_target)->host, dname,
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&qinfo.qname_len) != 0) {
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*lookup_target = NULL;
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return;
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}
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qinfo.qname = dname;
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qinfo.qclass = dclass;
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qinfo.qtype = lookup_aaaa ? LDNS_RR_TYPE_AAAA : LDNS_RR_TYPE_A;
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qinfo.local_alias = NULL;
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log_query_info(VERB_ALGO, "removing xfr callback", &qinfo);
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mesh_remove_callback(mesh, &qinfo, BIT_RD, cb, cb_arg,
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lookup_unique_info);
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*lookup_target = NULL;
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}
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/** disown task_transfer. caller must hold xfr.lock */
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static void
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xfr_transfer_disown(struct auth_xfer* xfr)
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@@ -5492,6 +5518,12 @@ xfr_transfer_disown(struct auth_xfer* xfr)
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/* remove the commpoint */
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comm_point_delete(xfr->task_transfer->cp);
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xfr->task_transfer->cp = NULL;
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if(xfr->task_transfer->env)
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xfr_stop_lookup(&xfr->task_transfer->lookup_target,
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xfr->task_transfer->lookup_unique_info,
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xfr->task_transfer->lookup_aaaa, xfr->dclass,
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xfr->task_transfer->env->mesh,
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&auth_xfer_transfer_lookup_callback, xfr);
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/* we don't own this item anymore */
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xfr->task_transfer->worker = NULL;
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xfr->task_transfer->env = NULL;
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@@ -5787,6 +5819,26 @@ xfr_master_add_addrs(struct auth_master* m, struct ub_packed_rrset_key* rrset,
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}
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}
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/** check if the lookup target name equals the found answer name. */
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static int
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xfer_target_equals_answer_name(struct auth_master* lookup_target,
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struct ub_packed_rrset_key* answer)
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{
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uint8_t qname[LDNS_MAX_DOMAINLEN+1];
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size_t qname_len;
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if(!lookup_target) return 0;
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if(!answer) return 0;
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qname_len = sizeof(qname);
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if(sldns_str2wire_dname_buf(lookup_target->host, qname, &qname_len)
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!= 0) {
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verbose(VERB_ALGO, "xfer_target_equals_answer_name: could not parse auth host name");
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return 0;
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}
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if(query_dname_compare(answer->rk.dname, qname) == 0)
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return 1;
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return 0;
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}
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/** callback for task_transfer lookup of host name, of A or AAAA */
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void auth_xfer_transfer_lookup_callback(void* arg, int rcode, sldns_buffer* buf,
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enum sec_status ATTR_UNUSED(sec), char* ATTR_UNUSED(why_bogus),
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@@ -5817,21 +5869,28 @@ void auth_xfer_transfer_lookup_callback(void* arg, int rcode, sldns_buffer* buf,
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/* parsed successfully */
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struct ub_packed_rrset_key* answer =
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reply_find_answer_rrset(&rq, rep);
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if(answer) {
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if(answer && xfer_target_equals_answer_name(
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xfr->task_transfer->lookup_target, answer)) {
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xfr_master_add_addrs(xfr->task_transfer->
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lookup_target, answer, wanted_qtype);
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} else if(answer) {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup has mismatch in answer name", zname, ((xfr->task_transfer->lookup_target && xfr->task_transfer->lookup_target->host) ? xfr->task_transfer->lookup_target->host : "null"), (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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}
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} else {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup has nodata", zname, xfr->task_transfer->lookup_target->host, (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup has nodata", zname, ((xfr->task_transfer->lookup_target && xfr->task_transfer->lookup_target->host) ? xfr->task_transfer->lookup_target->host : "null"), (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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}
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}
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} else {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup has no answer", zname, xfr->task_transfer->lookup_target->host, (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup has no answer", zname, ((xfr->task_transfer->lookup_target && xfr->task_transfer->lookup_target->host) ? xfr->task_transfer->lookup_target->host : "null"), (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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}
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}
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regional_free_all(temp);
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@@ -5839,10 +5898,11 @@ void auth_xfer_transfer_lookup_callback(void* arg, int rcode, sldns_buffer* buf,
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup failed", zname, xfr->task_transfer->lookup_target->host, (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s transfer lookup failed", zname, ((xfr->task_transfer->lookup_target && xfr->task_transfer->lookup_target->host) ? xfr->task_transfer->lookup_target->host : "null"), (xfr->task_transfer->lookup_aaaa?"AAAA":"A"));
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}
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}
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if(xfr->task_transfer->lookup_target->list &&
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if(xfr->task_transfer->lookup_target &&
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xfr->task_transfer->lookup_target->list &&
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xfr->task_transfer->lookup_target == xfr_transfer_current_master(xfr))
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xfr->task_transfer->scan_addr = xfr->task_transfer->lookup_target->list;
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@@ -6499,6 +6559,12 @@ xfr_probe_disown(struct auth_xfer* xfr)
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/* remove the commpoint */
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comm_point_delete(xfr->task_probe->cp);
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xfr->task_probe->cp = NULL;
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if(xfr->task_probe->env)
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xfr_stop_lookup(&xfr->task_probe->lookup_target,
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xfr->task_probe->lookup_unique_info,
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xfr->task_probe->lookup_aaaa, xfr->dclass,
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xfr->task_probe->env->mesh,
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&auth_xfer_probe_lookup_callback, xfr);
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/* we don't own this item anymore */
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xfr->task_probe->worker = NULL;
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xfr->task_probe->env = NULL;
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@@ -6953,21 +7019,28 @@ void auth_xfer_probe_lookup_callback(void* arg, int rcode, sldns_buffer* buf,
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/* parsed successfully */
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struct ub_packed_rrset_key* answer =
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reply_find_answer_rrset(&rq, rep);
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if(answer) {
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if(answer && xfer_target_equals_answer_name(
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xfr->task_probe->lookup_target, answer)) {
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xfr_master_add_addrs(xfr->task_probe->
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lookup_target, answer, wanted_qtype);
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} else if(answer) {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup has mismatch in answer name", zname, ((xfr->task_probe->lookup_target && xfr->task_probe->lookup_target->host) ? xfr->task_probe->lookup_target->host : "null"), (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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}
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} else {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup has nodata", zname, xfr->task_probe->lookup_target->host, (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup has nodata", zname, ((xfr->task_probe->lookup_target && xfr->task_probe->lookup_target->host) ? xfr->task_probe->lookup_target->host : "null"), (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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}
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}
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} else {
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup has no address", zname, xfr->task_probe->lookup_target->host, (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup has no address", zname, ((xfr->task_probe->lookup_target && xfr->task_probe->lookup_target->host) ? xfr->task_probe->lookup_target->host : "null"), (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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}
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}
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regional_free_all(temp);
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@@ -6975,10 +7048,11 @@ void auth_xfer_probe_lookup_callback(void* arg, int rcode, sldns_buffer* buf,
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if(verbosity >= VERB_ALGO) {
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char zname[LDNS_MAX_DOMAINLEN];
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dname_str(xfr->name, zname);
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup failed", zname, xfr->task_probe->lookup_target->host, (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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verbose(VERB_ALGO, "auth zone %s host %s type %s probe lookup failed", zname, ((xfr->task_probe->lookup_target && xfr->task_probe->lookup_target->host) ? xfr->task_probe->lookup_target->host : "null"), (xfr->task_probe->lookup_aaaa?"AAAA":"A"));
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}
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}
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if(xfr->task_probe->lookup_target->list &&
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if(xfr->task_probe->lookup_target &&
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xfr->task_probe->lookup_target->list &&
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xfr->task_probe->lookup_target == xfr_probe_current_master(xfr))
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xfr->task_probe->scan_addr = xfr->task_probe->lookup_target->list;
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@@ -0,0 +1,3 @@
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example.com. IN SOA ns.example.com. hostmaster.example.com. 1 3600 900 86400 3600
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example.com. IN NS ns.example.net.
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www.example.com. IN A 1.2.3.4
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@@ -0,0 +1,34 @@
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server:
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verbosity: 7
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# num-threads: 1
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interface: 127.0.0.1
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port: @PORT@
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use-syslog: no
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directory: ""
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pidfile: "unbound.pid"
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chroot: ""
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username: ""
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do-not-query-localhost: no
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use-caps-for-id: no
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stub-zone:
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name: "."
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stub-addr: 127.0.0.1@@TOPORT@
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remote-control:
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control-enable: yes
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control-interface: @CONTROL_PATH@/controlpipe.@CONTROL_PID@
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control-use-cert: no
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auth-zone:
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name: "example.com"
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for-upstream: yes
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for-downstream: yes
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allow-notify: notif.example.net
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zonefile: "example.com.zone"
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master: "127.0.0.1@@TOPORT@"
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auth-zone:
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name: "example2.com"
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for-upstream: yes
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for-downstream: yes
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master: prim.example.net
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@@ -0,0 +1,24 @@
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server:
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verbosity: 7
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# num-threads: 1
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interface: 127.0.0.1
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port: @PORT@
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use-syslog: no
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directory: ""
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pidfile: "unbound.pid"
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chroot: ""
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username: ""
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do-not-query-localhost: no
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use-caps-for-id: no
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stub-zone:
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name: "."
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stub-addr: 127.0.0.1@@TOPORT@
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remote-control:
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control-enable: yes
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control-interface: @CONTROL_PATH@/controlpipe.@CONTROL_PID@
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control-use-cert: no
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# auth zone removed for example.com
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# auth zone removed for example2.com
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@@ -0,0 +1,16 @@
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BaseName: fast_reload_authdel
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Version: 1.0
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Description: Test fast_reload with auth zone delete of callbacks.
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CreationDate: Tue May 13 03:00:00 PM CEST 2026
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Maintainer: dr. W.C.A. Wijngaards
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Category:
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Component:
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CmdDepends:
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Depends:
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Help:
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Pre: fast_reload_authdel.pre
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Post: fast_reload_authdel.post
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Test: fast_reload_authdel.test
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AuxFiles:
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Passed:
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Failure:
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@@ -0,0 +1,13 @@
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# #-- fast_reload_authdel.post --#
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# source the master var file when it's there
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[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
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# source the test var file when it's there
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[ -f .tpkg.var.test ] && source .tpkg.var.test
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#
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# do your teardown here
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. ../common.sh
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kill_pid $FWD_PID
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kill_pid $UNBOUND_PID
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echo "> cat logfiles"
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cat fwd.log
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cat unbound.log
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@@ -0,0 +1,46 @@
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# #-- fast_reload_authdel.pre--#
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# source the master var file when it's there
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[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
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# use .tpkg.var.test for in test variable passing
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[ -f .tpkg.var.test ] && source .tpkg.var.test
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PRE="../.."
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. ../common.sh
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# if no threads; exit
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if grep -e "define HAVE_PTHREAD 1" -e "define HAVE_SOLARIS_THREADS 1" -e "define HAVE_WINDOWS_THREADS 1" $PRE/config.h; then
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echo "have threads"
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else
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skip_test "no threads"
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fi
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get_random_port 2
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UNBOUND_PORT=$RND_PORT
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FWD_PORT=$(($RND_PORT + 1))
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echo "UNBOUND_PORT=$UNBOUND_PORT" >> .tpkg.var.test
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echo "FWD_PORT=$FWD_PORT" >> .tpkg.var.test
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# start forwarder
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get_ldns_testns
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$LDNS_TESTNS -p $FWD_PORT fast_reload_authdel.testns >fwd.log 2>&1 &
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FWD_PID=$!
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echo "FWD_PID=$FWD_PID" >> .tpkg.var.test
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# make config files
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CONTROL_PATH=/tmp
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CONTROL_PID=$$
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sed -e 's/@PORT\@/'$UNBOUND_PORT'/' -e 's/@TOPORT\@/'$FWD_PORT'/' -e 's?@CONTROL_PATH\@?'$CONTROL_PATH'?' -e 's/@CONTROL_PID@/'$CONTROL_PID'/' < fast_reload_authdel.conf > ub.conf
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sed -e 's/@PORT\@/'$UNBOUND_PORT'/' -e 's/@TOPORT\@/'$FWD_PORT'/' -e 's?@CONTROL_PATH\@?'$CONTROL_PATH'?' -e 's/@CONTROL_PID@/'$CONTROL_PID'/' < fast_reload_authdel.conf2 > ub.conf2
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# make config file
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# start unbound in the background
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PRE="../.."
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$PRE/unbound -d -c ub.conf >unbound.log 2>&1 &
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UNBOUND_PID=$!
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echo "UNBOUND_PID=$UNBOUND_PID" >> .tpkg.var.test
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echo "CONTROL_PATH=$CONTROL_PATH" >> .tpkg.var.test
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echo "CONTROL_PID=$CONTROL_PID" >> .tpkg.var.test
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cat .tpkg.var.test
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wait_ldns_testns_up fwd.log
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wait_unbound_up unbound.log
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@@ -0,0 +1,47 @@
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# #-- fast_reload_authdel.test --#
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# source the master var file when it's there
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[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
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# use .tpkg.var.test for in test variable passing
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[ -f .tpkg.var.test ] && source .tpkg.var.test
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PRE="../.."
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# do the test
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# the upstream delays.
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# wait for the notify: probe of example to be in the middle of the callback,
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# and for the primary: probe of example2 to be in the middle of the callback.
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# And then fastreload to delete.
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echo "> wait for unbound to transfer"
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sleep 1
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mv ub.conf ub.conf.orig
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mv ub.conf2 ub.conf
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echo ""
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echo "> unbound-control fast_reload"
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$PRE/unbound-control -c ub.conf fast_reload +vv 2>&1 | tee output
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if test $? -ne 0; then
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echo "wrong exit value."
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exit 1
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else
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echo "exit value: OK"
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fi
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sleep 1
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echo "> check log"
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if grep "removing xfr callback prim.example.net. A IN" unbound.log; then
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echo "OK"
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else
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echo "Not OK"
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exit 1
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fi
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if grep "removing xfr callback notif.example.net. A IN" unbound.log; then
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echo "OK"
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else
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echo "Not OK"
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exit 1
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||||
fi
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||||
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exit 0
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||||
@@ -0,0 +1,78 @@
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||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
example.com. IN SOA
|
||||
SECTION ANSWER
|
||||
example.com. IN SOA ns.example.com. hostmaster.example.com. 1 3600 900 86400 3600
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
example.com. IN AXFR
|
||||
SECTION ANSWER
|
||||
example.com. IN SOA ns.example.com. hostmaster.example.com. 1 3600 900 86400 3600
|
||||
example.com. IN NS ns.example.net.
|
||||
www.example.com. IN A 1.2.3.4
|
||||
example.com. IN SOA ns.example.com. hostmaster.example.com. 1 3600 900 86400 3600
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
example2.com. IN SOA
|
||||
SECTION ANSWER
|
||||
example2.com. IN SOA ns.example2.com. hostmaster.example2.com. 1 3600 900 86400 3600
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
example2.com. IN AXFR
|
||||
SECTION ANSWER
|
||||
example2.com. IN SOA ns.example2.com. hostmaster.example2.com. 1 3600 900 86400 3600
|
||||
example2.com. IN NS ns.example2.net.
|
||||
EXTRA_PACKET
|
||||
REPLY QR AA NOERROR
|
||||
; too slow
|
||||
ADJUST packet_sleep=5
|
||||
SECTION QUESTION
|
||||
example2.com. IN AXFR
|
||||
SECTION ANSWER
|
||||
extra.example2.com. IN A 1.2.3.5
|
||||
EXTRA_PACKET
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
example2.com. IN AXFR
|
||||
SECTION ANSWER
|
||||
www.example2.com. IN A 1.2.3.4
|
||||
example2.com. IN SOA ns.example2.com. hostmaster.example2.com. 1 3600 900 86400 3600
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id sleep=5
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
prim.example.net. IN A
|
||||
SECTION ANSWER
|
||||
prim.example.net. IN A 127.0.0.1
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id sleep=5
|
||||
REPLY QR AA NOERROR
|
||||
SECTION QUESTION
|
||||
notif.example.net. IN A
|
||||
SECTION ANSWER
|
||||
notif.example.net. IN A 127.0.0.1
|
||||
ENTRY_END
|
||||
Reference in New Issue
Block a user