/*
* getaddrinfo_thread() resolves a name and then exits.
*
* For builds without ARES, but with ENABLE_IPV6, create a resolver thread
* and wait on it.
*/
static unsigned int CURL_STDCALL getaddrinfo_thread (void *arg)
{
struct thread_sync_data *tsd = (struct thread_sync_data*)arg;
struct thread_data *td = tsd->td;
char service[12];
int rc;
snprintf(service, sizeof(service), "%d", tsd->port);
rc = Curl_getaddrinfo_ex(tsd->hostname, service, &tsd->hints, &tsd->res);
if(rc != 0) {
tsd->sock_error = SOCKERRNO?SOCKERRNO:rc;
if(tsd->sock_error == 0)
tsd->sock_error = RESOLVER_ENOMEM;
}
else {
Curl_addrinfo_set_port(tsd->res, tsd->port);
}
Curl_mutex_acquire(tsd->mtx);
if(tsd->done) {
/* too late, gotta clean up the mess */
Curl_mutex_release(tsd->mtx);
destroy_thread_sync_data(tsd);
free(td);
}
else {
tsd->done = 1;
Curl_mutex_release(tsd->mtx);
}
return 0;
}
/*
* Curl_resolver_getaddrinfo() - for getaddrinfo
*/
Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn,
const char *hostname,
int port,
int *waitp)
{
struct addrinfo hints;
struct in_addr in;
Curl_addrinfo *res;
int error;
char sbuf[12];
int pf = PF_INET;
#ifdef CURLRES_IPV6
struct in6_addr in6;
#endif /* CURLRES_IPV6 */
*waitp = 0; /* default to synchronous response */
#ifndef USE_RESOLVE_ON_IPS
/* First check if this is an IPv4 address string */
if(Curl_inet_pton(AF_INET, hostname, &in) > 0)
/* This is a dotted IP address 123.123.123.123-style */
return Curl_ip2addr(AF_INET, &in, hostname, port);
#ifdef CURLRES_IPV6
/* check if this is an IPv6 address string */
if(Curl_inet_pton(AF_INET6, hostname, &in6) > 0)
/* This is an IPv6 address literal */
return Curl_ip2addr(AF_INET6, &in6, hostname, port);
#endif /* CURLRES_IPV6 */
#endif /* !USE_RESOLVE_ON_IPS */
#ifdef CURLRES_IPV6
/*
* Check if a limited name resolve has been requested.
*/
switch(conn->ip_version) {
case CURL_IPRESOLVE_V4:
pf = PF_INET;
break;
case CURL_IPRESOLVE_V6:
pf = PF_INET6;
break;
default:
pf = PF_UNSPEC;
break;
}
if((pf != PF_INET) && !Curl_ipv6works())
/* The stack seems to be a non-IPv6 one */
pf = PF_INET;
#endif /* CURLRES_IPV6 */
memset(&hints, 0, sizeof(hints));
hints.ai_family = pf;
hints.ai_socktype = conn->socktype;
snprintf(sbuf, sizeof(sbuf), "%d", port);
/* fire up a new resolver thread! */
if(init_resolve_thread(conn, hostname, port, &hints)) {
*waitp = 1; /* expect asynchronous response */
return NULL;
}
/* fall-back to blocking version */
infof(conn->data, "init_resolve_thread() failed for %s; %s\n",
hostname, Curl_strerror(conn, ERRNO));
error = Curl_getaddrinfo_ex(hostname, sbuf, &hints, &res);
if(error) {
infof(conn->data, "getaddrinfo() failed for %s:%d; %s\n",
hostname, port, Curl_strerror(conn, SOCKERRNO));
return NULL;
}
else {
Curl_addrinfo_set_port(res, port);
}
return res;
}
/*
* Curl_resolver_getaddrinfo() - for getaddrinfo
*/
Curl_addrinfo *Curl_resolver_getaddrinfo(CURL *data,
const char *hostname,
int port,
int *waitp)
{
struct connectdata *conn = data->easy_conn;
struct addrinfo hints;
Curl_addrinfo *res;
int error;
char sbuf[12];
int pf = PF_INET;
*waitp = 0; /* default to synchronous response */
#ifndef USE_RESOLVE_ON_IPS
res = Curl_str2addr(hostname, port);
if(res)
return res;
#endif
#ifdef CURLRES_IPV6
/*
* Check if a limited name resolve has been requested.
*/
switch(conn->ip_version) {
case CURL_IPRESOLVE_V4:
pf = PF_INET;
break;
case CURL_IPRESOLVE_V6:
pf = PF_INET6;
break;
default:
pf = PF_UNSPEC;
break;
}
if((pf != PF_INET) && !Curl_ipv6works())
/* The stack seems to be a non-IPv6 one */
pf = PF_INET;
#endif /* CURLRES_IPV6 */
memset(&hints, 0, sizeof(hints));
hints.ai_family = pf;
hints.ai_socktype = conn->socktype;
snprintf(sbuf, sizeof(sbuf), "%d", port);
/* fire up a new resolver thread! */
if(init_resolve_thread(conn, hostname, port, &hints)) {
*waitp = 1; /* expect asynchronous response */
return NULL;
}
/* fall-back to blocking version */
infof(data, "init_resolve_thread() failed for %s; %s\n",
hostname, Curl_strerror(conn, errno));
error = Curl_getaddrinfo_ex(hostname, sbuf, &hints, &res);
if(error) {
infof(data, "getaddrinfo() failed for %s:%d; %s\n",
hostname, port, Curl_strerror(conn, SOCKERRNO));
return NULL;
}
else {
Curl_addrinfo_set_port(res, port);
}
return res;
}
