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Rationalise DNS packet-buffer size calculations.

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Simon Kelley committed 2014-01-08 12:10:28 +00:00
1 parent 871417d45d
commit 60b68069cf
4 files changed
+19 -12
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src/dnssec.c
+2 -2
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@@ -479,7 +479,7 @@ static int digestalg_add_rdata(int sigtype, struct dns_header *header, size_t pk
return 1;
}
size_t dnssec_generate_query(struct dns_header *header, char *name, int class, int type, union mysockaddr *addr)
size_t dnssec_generate_query(struct dns_header *header, char *end, char *name, int class, int type, union mysockaddr *addr)
{
unsigned char *p;
char types[20];
@@ -511,7 +511,7 @@ size_t dnssec_generate_query(struct dns_header *header, char *name, int class, i
PUTSHORT(type, p);
PUTSHORT(class, p);
return add_do_bit(header, p - (unsigned char *)header, ((char *) header) + PACKETSZ);
return add_do_bit(header, p - (unsigned char *)header, end);
}
/* The DNS packet is expected to contain the answer to a DNSKEY query.