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resolved: be slightly stricter when validating DnsQuestion

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Also verify whether the DNS RR types are actually suitable for a question.
This commit is contained in:
Lennart Poettering 2016-01-18 20:21:55 +01:00
parent 6a21960c0b
commit 0f7091e624
1 changed files with 10 additions and 4 deletions
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14
src/resolve/resolved-dns-question.c
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@ -21,6 +21,7 @@
#include "alloc-util.h"
#include "dns-domain.h"
#include "dns-type.h"
#include "resolved-dns-question.h"
DnsQuestion *dns_question_new(unsigned n) {
@ -144,12 +145,17 @@ int dns_question_is_valid_for_query(DnsQuestion *q) {
return 0;
/* Check that all keys in this question bear the same name */
for (i = 1; i < q->n_keys; i++) {
for (i = 0; i < q->n_keys; i++) {
assert(q->keys[i]);
r = dns_name_equal(DNS_RESOURCE_KEY_NAME(q->keys[i]), name);
if (r <= 0)
return r;
if (i > 0) {
r = dns_name_equal(DNS_RESOURCE_KEY_NAME(q->keys[i]), name);
if (r <= 0)
return r;
}
if (!dns_type_is_valid_query(q->keys[i]->type))
return 0;
}
return 1;