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/* ISC license. */
#include <errno.h>
#include <skalibs/error.h>
#include <s6-dns/s6dns-constants.h>
#include <s6-dns/s6dns-message.h>
int s6dns_message_parse (s6dns_message_header_t *h, char const *packet, unsigned int packetlen, s6dns_message_rr_func_ref f, void *data)
{
s6dns_message_counts_t counts ;
unsigned int pos ;
unsigned int section ;
int gotans ;
if (!s6dns_message_parse_init(h, &counts, packet, packetlen, &pos)) return 0 ;
switch (h->rcode)
{
case 0 : break ;
case 1 : return (errno = EILSEQ, 0) ;
case 2 : return (errno = EBUSY, 0) ;
case 3 : return (errno = ENOENT, 0) ;
case 4 : return (errno = ENOTSUP, 0) ;
case 5 : return (errno = ECONNREFUSED, 0) ;
default: return (errno = EIO, 0) ;
}
gotans = !!counts.an ;
section = s6dns_message_parse_skipqd(&counts, packet, packetlen, &pos) ;
while (section)
{
s6dns_message_rr_t rr ;
if (!s6dns_message_parse_getrr(&rr, packet, packetlen, &pos)) return 0 ;
if (rr.rclass == S6DNS_C_IN)
{
int r = (*f)(&rr, packet, packetlen, pos, section, data) ;
if (r < 1) return r ;
}
section = s6dns_message_parse_next(&counts, &rr, packet, packetlen, &pos) ;
}
return 1 + gotans ;
}
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