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Major tidy up of EDNS0 handling and computation/use of udp packet size.

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This commit is contained in:
Simon Kelley
2015-12-20 17:12:16 +00:00
parent 14a4ae883d
commit fa14bec83b
7 changed files with 168 additions and 118 deletions
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8
src/auth.c
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@@ -81,7 +81,8 @@ int in_zone(struct auth_zone *zone, char *name, char **cut)
}
size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr, int local_query)
size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr,
int local_query, int do_bit, int have_pseudoheader)
{
char *name = daemon->namebuff;
unsigned char *p, *ansp;
@@ -820,6 +821,11 @@ size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t n
header->ancount = htons(anscount);
header->nscount = htons(authcount);
header->arcount = htons(0);
/* Advertise our packet size limit in our reply */
if (have_pseudoheader)
return add_pseudoheader(header, ansp - (unsigned char *)header, (unsigned char *)limit, daemon->edns_pktsz, 0, NULL, 0, do_bit);
return ansp - (unsigned char *)header;
}