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/* ISC license. */
/* Hey, OpenBSD, are you aware ECANCELED is POSIX? */
#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#include <sys/uio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <skalibs/error.h>
#include <skalibs/uint16.h>
#include <skalibs/alloc.h>
#include <skalibs/genalloc.h>
#include <skalibs/gensetdyn.h>
#include <skalibs/textclient.h>
#include <s6-dns/skadns.h>
static int msghandler (struct iovec const *v, void *context)
{
skadns_t *a = (skadns_t *)context ;
char const *s = v->iov_base ;
skadnsanswer_t *p ;
uint16_t id ;
if (v->iov_len < 3) return (errno = EPROTO, 0) ;
uint16_unpack_big(s, &id) ;
p = GENSETDYN_P(skadnsanswer_t, &a->q, id) ;
if (p->status == ECANCELED)
{
p->status = EINVAL ;
return gensetdyn_delete(&a->q, id) ;
}
if (!error_isagain(p->status)) return (errno = EINVAL, 0) ;
if (!genalloc_readyplus(uint16_t, &a->list, 1)) return 0 ;
if (!s[2])
{
p->data = alloc(v->iov_len-3) ;
if (!p->data) return 0 ;
memcpy(p->data, s+3, v->iov_len-3) ;
p->len = v->iov_len-3 ;
}
p->status = s[2] ;
genalloc_append(uint16_t, &a->list, &id) ;
return 1 ;
}
int skadns_update (skadns_t *a)
{
genalloc_setlen(uint16_t, &a->list, 0) ;
return textclient_update(&a->connection, &msghandler, a) ;
}
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