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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
void
nxt_job_resolve(nxt_job_resolve_t *jbr)
{
int err;
u_char *host;
size_t length;
nxt_mp_t *mp;
nxt_uint_t n;
nxt_sockaddr_t *sa;
struct addrinfo hint, *res, *r;
nxt_work_handler_t handler;
#define NXT_BUFSIZE 64
u_char buf[NXT_BUFSIZE];
handler = jbr->error_handler;
res = NULL;
length = jbr->name.length + 1;
if (nxt_fast_path(length <= NXT_BUFSIZE)) {
host = buf;
} else {
host = nxt_mp_alloc(jbr->job.mem_pool, length);
if (nxt_slow_path(host == NULL)) {
goto fail;
}
}
nxt_cpystrn(host, jbr->name.start, length);
nxt_memzero(&hint, sizeof(struct addrinfo));
hint.ai_socktype = SOCK_STREAM;
err = getaddrinfo((char *) host, NULL, &hint, &res);
if (err != 0) {
nxt_thread_log_error(jbr->log_level,
"getaddrinfo(\"%s\") failed (%d: %s)",
host, err, gai_strerror(err));
goto fail;
}
n = 0;
for (r = res; r != NULL; r = r->ai_next) {
switch (r->ai_addr->sa_family) {
#if (NXT_INET6)
case AF_INET6:
#endif
case AF_INET:
n++;
break;
default:
break;
}
}
jbr->count = n;
mp = jbr->job.mem_pool;
jbr->sockaddrs = nxt_mp_alloc(mp, n * sizeof(nxt_sockaddr_t *));
if (nxt_slow_path(jbr->sockaddrs == NULL)) {
goto fail;
}
n = 0;
for (r = res; r != NULL; r = r->ai_next) {
switch (r->ai_addr->sa_family) {
#if (NXT_INET6)
case AF_INET6:
length = NXT_INET6_ADDR_STR_LEN;
break;
#endif
case AF_INET:
length = NXT_INET_ADDR_STR_LEN;
break;
default:
continue;
}
sa = nxt_sockaddr_create(mp, r->ai_addr, r->ai_addrlen, length);
if (nxt_slow_path(sa == NULL)) {
goto fail;
}
jbr->sockaddrs[n++] = sa;
if (jbr->port != 0) {
switch (sa->u.sockaddr.sa_family) {
case AF_INET:
sa->u.sockaddr_in.sin_port = jbr->port;
break;
#if (NXT_INET6)
case AF_INET6:
sa->u.sockaddr_in6.sin6_port = jbr->port;
break;
#endif
default:
break;
}
}
}
handler = jbr->ready_handler;
fail:
if (nxt_fast_path(res != NULL)) {
freeaddrinfo(res);
}
if (host != buf) {
nxt_mp_free(jbr->job.mem_pool, host);
}
nxt_job_return(jbr->job.task, &jbr->job, handler);
}
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