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- Fix #1288: [FR] Improve fuzzing of unbound by adapting the netbound

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program.
This commit is contained in:
W.C.A. Wijngaards
2025-05-21 12:41:54 +02:00
parent 342a0f48e3
commit ff7dfd52a2
6 changed files with 196 additions and 22 deletions
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testcode/fake_event.c
+12 -4
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@@ -900,8 +900,10 @@ run_scenario(struct replay_runtime* runtime)
runtime->now->evt_type == repevt_front_reply) {
answer_check_it(runtime);
advance_moment(runtime);
} else if(pending_matches_range(runtime, &entry, &pending)) {
answer_callback_from_entry(runtime, entry, pending);
} else if(runtime->now && pending_matches_range(runtime,
&entry, &pending)) {
if(entry)
answer_callback_from_entry(runtime, entry, pending);
} else {
do_moment_and_advance(runtime);
}
@@ -1274,7 +1276,7 @@ struct serviced_query* outnet_serviced_query(struct outside_network* outnet,
(flags&~(BIT_RD|BIT_CD))?" MORE":"", (dnssec)?" DO":"");
/* create packet with EDNS */
pend->buffer = sldns_buffer_new(512);
pend->buffer = sldns_buffer_new(4096);
log_assert(pend->buffer);
sldns_buffer_write_u16(pend->buffer, 0); /* id */
sldns_buffer_write_u16(pend->buffer, flags);
@@ -1334,7 +1336,13 @@ struct serviced_query* outnet_serviced_query(struct outside_network* outnet,
edns.opt_list_in = NULL;
edns.opt_list_out = per_upstream_opt_list;
edns.opt_list_inplace_cb_out = NULL;
attach_edns_record(pend->buffer, &edns);
if(sldns_buffer_capacity(pend->buffer) >=
sldns_buffer_limit(pend->buffer)
+calc_edns_field_size(&edns)) {
attach_edns_record(pend->buffer, &edns);
} else {
verbose(VERB_ALGO, "edns field too large to fit");
}
}
memcpy(&pend->addr, addr, addrlen);
pend->addrlen = addrlen;