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Code Issues Releases Wiki Activity

return FORMERR when question section is empty if COOKIE is not present

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This commit is contained in:
Mukund Sivaraman
2018-05-16 00:07:17 +05:30
committed by Evan Hunt
parent be26328849
commit 06d3106002
3 changed files with 27 additions and 7 deletions
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7
lib/ns/client.c
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@@ -2552,9 +2552,10 @@ ns__client_request(isc_task_t *task, isc_event_t *event) {
}
if (client->message->rdclass == 0) {
if ((client->attributes & NS_CLIENTATTR_WANTCOOKIE) != 0 ||
(client->message->opcode == dns_opcode_query &&
client->message->counts[DNS_SECTION_QUESTION] == 0U)) {
if ((client->attributes & NS_CLIENTATTR_WANTCOOKIE) != 0 &&
client->message->opcode == dns_opcode_query &&
client->message->counts[DNS_SECTION_QUESTION] == 0U)
{
result = dns_message_reply(client->message, ISC_TRUE);
if (result != ISC_R_SUCCESS) {
ns_client_error(client, result);