Pi-Hole/dnsmasq
1
0
Fork 0
mirror of https://github.com/pi-hole/dnsmasq.git synced 2025-12-19 18:28:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

Need to fixup records in the additional section when removing DNSSEC stuff.

Browse Source
This commit is contained in:
Simon Kelley
2014-04-24 17:59:58 +01:00
parent 7e22cf28f8
commit 50f86ce8e4
1 changed files with 10 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/dnssec.c
View File

@@ -2132,7 +2132,7 @@ static int check_rrs(unsigned char *p, struct dns_header *header, size_t plen, i
int i, type, class, rdlen;
unsigned char *pp;
for (i = 0; i < ntohs(header->ancount) + ntohs(header->nscount); i++)
for (i = 0; i < ntohs(header->ancount) + ntohs(header->nscount) + ntohs(header->arcount); i++)
{
pp = p;
@@ -2178,7 +2178,7 @@ size_t filter_rrsigs(struct dns_header *header, size_t plen)
static int rr_sz = 0;
unsigned char *p = (unsigned char *)(header+1);
int i, rdlen, qtype, qclass, rr_found, chop_an, chop_ns;
int i, rdlen, qtype, qclass, rr_found, chop_an, chop_ns, chop_ar;
if (ntohs(header->qdcount) != 1 ||
!(p = skip_name(p, header, plen, 4)))
@@ -2189,7 +2189,9 @@ size_t filter_rrsigs(struct dns_header *header, size_t plen)
/* First pass, find pointers to start and end of all the records we wish to elide:
records added for DNSSEC, unless explicity queried for */
for (rr_found = 0, chop_ns = 0, chop_an = 0, i = 0; i < ntohs(header->ancount) + ntohs(header->nscount); i++)
for (rr_found = 0, chop_ns = 0, chop_an = 0, chop_ar = 0, i = 0;
i < ntohs(header->ancount) + ntohs(header->nscount) + ntohs(header->arcount);
i++)
{
unsigned char *pstart = p;
int type, class;
@@ -2217,8 +2219,10 @@ size_t filter_rrsigs(struct dns_header *header, size_t plen)
if (i < ntohs(header->ancount))
chop_an++;
else
else if (i < ntohs(header->nscount))
chop_ns++;
else
chop_ar++;
}
else if (!ADD_RDLEN(header, p, plen, rdlen))
return plen;
@@ -2255,6 +2259,7 @@ size_t filter_rrsigs(struct dns_header *header, size_t plen)
plen = p - (unsigned char *)header;
header->ancount = htons(ntohs(header->ancount) - chop_an);
header->nscount = htons(ntohs(header->nscount) - chop_ns);
header->arcount = htons(ntohs(header->arcount) - chop_ar);
/* Fourth pass, fix up pointers in the remaining records */
p = (unsigned char *)(header+1);