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If server sends answer with TC set via TCP, bail
author
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Sun, 24 May 2020 17:16:07 +0000
(18:16 +0100)
committer
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Tue, 26 May 2020 19:24:04 +0000
(20:24 +0100)
We shouldn't use the answer; it's corrupted. But we don't have a
recovery strategy either.
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
src/reply.c
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diff --git
a/src/reply.c
b/src/reply.c
index ca0de2f4a3af07c217585d2f8585ece00075803b..fbe4c95ecdde5ccaa52f638293253b80e3629d4a 100644
(file)
--- a/
src/reply.c
+++ b/
src/reply.c
@@
-370,6
+370,11
@@
void adns__procdgram(adns_state ads, const byte *dgram, int dglen,
adns__query_fail(qu,adns_s_invalidresponse);
return;
}
+ if (qu->flags & adns_qf_usevc) {
+ adns__diag(ads,serv,qu,"server sent datagram with TC over TCP");
+ adns__query_fail(qu,adns_s_invalidresponse);
+ return;
+ }
qu->flags |= adns_qf_usevc;
x_restartquery: