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Set additional record count properly in NS reply 

For when there is no IPv4 address to return.
This commit is contained in:
Erik Ekman 2020-07-23 22:12:07 +02:00
parent ec6a1ac308
commit cde0b7632d
1 changed files with 4 additions and 1 deletions
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5
src/dns.c
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@ -260,7 +260,6 @@ int dns_encode_ns_response(char *buf, size_t buflen, struct query *q,
header->qdcount = htons(1); header->qdcount = htons(1);
header->ancount = htons(1); header->ancount = htons(1);
header->arcount = htons(1);
/* pointer to start of name */ /* pointer to start of name */
name = 0xc000 | ((p - buf) & 0x3fff); name = 0xc000 | ((p - buf) & 0x3fff);
@ -302,6 +301,10 @@ int dns_encode_ns_response(char *buf, size_t buflen, struct query *q,
/* Do we have an IPv4 address to send? */ /* Do we have an IPv4 address to send? */
if (q->destination.ss_family == AF_INET) { if (q->destination.ss_family == AF_INET) {
struct sockaddr_in *dest = (struct sockaddr_in *) &q->destination; struct sockaddr_in *dest = (struct sockaddr_in *) &q->destination;
/* One additional record coming */
header->arcount = htons(1);
/* Additional data (A-record of NS server) */ /* Additional data (A-record of NS server) */
CHECKLEN(12); CHECKLEN(12);
putshort(&p, nsname); /* Name Server */ putshort(&p, nsname); /* Name Server */