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#include "byte.h"
#include "dnsresolv.h"
#include "iopause.h"
#include "ip.h"
#include "taia.h"
/**
@file dns_resolve.c
@authors djb, fefe, feh
@ref ucspi-tcp
@brief high-level DNS resolve function
*/
struct dns_transmit dns_resolve_tx = {0};
int dns_resolve(const char *q, const char qtype[2])
{
struct taia stamp;
struct taia deadline;
char servers[QUERY_MAXIPLEN];
uint32 scopes[QUERY_MAXNS];
iopause_fd x[1];
int r;
if (dns_resolvconfip(servers, scopes) < 0) return DNS_INT;
if (dns_transmit_start6(&dns_resolve_tx, servers, 1, q, qtype, (const char *)V6localnet, scopes) < 0)
return DNS_COM;
for (;;) {
taia_now(&stamp);
taia_uint(&deadline, 120);
taia_add(&deadline, &deadline, &stamp);
dns_transmit_io(&dns_resolve_tx, x, &deadline);
iopause(x, 1, &deadline, &stamp);
r = dns_transmit_get(&dns_resolve_tx, x, &stamp);
if (r < 0) return DNS_COM;
if (r == 1) return 0;
}
}
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