/*
* Resolve a hostname through Tor and set the ip address in the given pointer.
*
* Return 0 on success else a negative value and the result addr is untouched.
*/
int tsocks_tor_resolve_ptr(const char *addr, char **ip, int af)
{
int ret;
struct connection conn;
uint8_t socks5_method;
assert(addr);
assert(ip);
DBG("Resolving %" PRIu32 " on the Tor network", addr);
conn.fd = tsocks_libc_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (conn.fd < 0) {
PERROR("socket");
ret = -errno;
goto error;
}
conn.dest_addr.domain = CONNECTION_DOMAIN_INET;
/* Is this configuration is set to use SOCKS5 authentication. */
if (tsocks_config.socks5_use_auth) {
socks5_method = SOCKS5_USER_PASS_METHOD;
} else {
socks5_method = SOCKS5_NO_AUTH_METHOD;
}
ret = setup_tor_connection(&conn, socks5_method);
if (ret < 0) {
goto end_close;
}
/* For the user/pass method, send the request before resolve ptr. */
if (socks5_method == SOCKS5_USER_PASS_METHOD) {
ret = auth_socks5(&conn);
if (ret < 0) {
goto end_close;
}
}
ret = socks5_send_resolve_ptr_request(&conn, addr, af);
if (ret < 0) {
goto end_close;
}
/* Force IPv4 resolution for now. */
ret = socks5_recv_resolve_ptr_reply(&conn, ip);
if (ret < 0) {
goto end_close;
}
end_close:
if (tsocks_libc_close(conn.fd) < 0) {
PERROR("close");
}
error:
return ret;
}
/*
* Resolve a hostname through Tor and set the ip address in the given pointer.
*
* Return 0 on success else a negative value and the result addr is untouched.
*/
int tsocks_tor_resolve_ptr(const char *addr, char **ip, int af)
{
int ret;
struct connection conn;
assert(addr);
assert(ip);
DBG("Resolving %" PRIu32 " on the Tor network", addr);
conn.fd = tsocks_libc_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (conn.fd < 0) {
PERROR("socket");
ret = -errno;
goto error;
}
conn.dest_addr.domain = CONNECTION_DOMAIN_INET;
ret = setup_tor_connection(&conn, SOCKS5_NO_AUTH_METHOD);
if (ret < 0) {
goto end_close;
}
ret = socks5_send_resolve_ptr_request(&conn, addr, af);
if (ret < 0) {
goto end_close;
}
/* Force IPv4 resolution for now. */
ret = socks5_recv_resolve_ptr_reply(&conn, ip);
if (ret < 0) {
goto end_close;
}
end_close:
if (tsocks_libc_close(conn.fd) < 0) {
PERROR("close");
}
error:
return ret;
}
/*
* Resolve a hostname through Tor and set the ip address in the given pointer.
*
* Return 0 on success else a negative value and the result addr is untouched.
*/
int tsocks_tor_resolve_ptr(const char *addr, char **ip, int af)
{
int ret;
struct connection conn;
assert(addr);
assert(ip);
DBG("Resolving %" PRIu32 " on the Tor network", addr);
conn.fd = tsocks_libc_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (conn.fd < 0) {
PERROR("socket");
ret = -errno;
goto error;
}
ret = setup_tor_connection(&conn);
if (ret < 0) {
goto error;
}
ret = socks5_send_resolve_ptr_request(addr, &conn);
if (ret < 0) {
goto error;
}
/* Force IPv4 resolution for now. */
ret = socks5_recv_resolve_ptr_reply(&conn, ip);
if (ret < 0) {
goto error;
}
ret = close(conn.fd);
if (ret < 0) {
PERROR("close");
}
error:
return ret;
}
