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resolved: properly reset old collected data when following a CNAME redirect

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This commit is contained in:
Lennart Poettering 2016-01-18 21:30:45 +01:00
parent 12634bb4a9
commit 7820b320ea
1 changed files with 26 additions and 6 deletions
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32
src/resolve/resolved-dns-query.c
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@ -309,6 +309,25 @@ static void dns_query_stop(DnsQuery *q) {
dns_query_candidate_stop(c);
}
static void dns_query_free_candidates(DnsQuery *q) {
assert(q);
while (q->candidates)
dns_query_candidate_free(q->candidates);
}
static void dns_query_reset_answer(DnsQuery *q) {
assert(q);
q->answer = dns_answer_unref(q->answer);
q->answer_rcode = 0;
q->answer_dnssec_result = _DNSSEC_RESULT_INVALID;
q->answer_authenticated = false;
q->answer_protocol = _DNS_PROTOCOL_INVALID;
q->answer_family = AF_UNSPEC;
q->answer_search_domain = dns_search_domain_unref(q->answer_search_domain);
}
DnsQuery *dns_query_free(DnsQuery *q) {
if (!q)
return NULL;
@ -322,13 +341,12 @@ DnsQuery *dns_query_free(DnsQuery *q) {
LIST_REMOVE(auxiliary_queries, q->auxiliary_for->auxiliary_queries, q);
}
while (q->candidates)
dns_query_candidate_free(q->candidates);
dns_query_free_candidates(q);
dns_question_unref(q->question_idna);
dns_question_unref(q->question_utf8);
dns_answer_unref(q->answer);
dns_search_domain_unref(q->answer_search_domain);
dns_query_reset_answer(q);
sd_bus_message_unref(q->request);
sd_bus_track_unref(q->bus_track);
@ -401,8 +419,9 @@ int dns_query_new(
q->question_idna = dns_question_ref(question_idna);
q->ifindex = ifindex;
q->flags = flags;
q->answer_family = AF_UNSPEC;
q->answer_dnssec_result = _DNSSEC_RESULT_INVALID;
q->answer_protocol = _DNS_PROTOCOL_INVALID;
q->answer_family = AF_UNSPEC;
/* First dump UTF8 question */
DNS_QUESTION_FOREACH(key, question_utf8) {
@ -1219,7 +1238,8 @@ static int dns_query_cname_redirect(DnsQuery *q, const DnsResourceRecord *cname)
q->question_utf8 = nq_utf8;
nq_utf8 = NULL;
dns_query_stop(q);
dns_query_free_candidates(q);
dns_query_reset_answer(q);
q->state = DNS_TRANSACTION_NULL;
return 0;