/*
* Initiate a SOCK5 connection to the Tor network using the given connection.
* The socks5 API will use the torsocks configuration object to find the tor
* daemon. If a username/password has been set use that method for the SOCKS5
* connection.
*
* Return 0 on success or else a negative value being the errno value that
* needs to be sent back.
*/
int tsocks_connect_to_tor(struct connection *conn)
{
int ret;
uint8_t socks5_method;
assert(conn);
DBG("Connecting to the Tor network on fd %d", conn->fd);
/* 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 error;
}
/* For the user/pass method, send the request before connect. */
if (socks5_method == SOCKS5_USER_PASS_METHOD) {
ret = socks5_send_user_pass_request(conn,
tsocks_config.conf_file.socks5_username,
tsocks_config.conf_file.socks5_password);
if (ret < 0) {
goto error;
}
ret = socks5_recv_user_pass_reply(conn);
if (ret < 0) {
goto error;
}
}
ret = socks5_send_connect_request(conn);
if (ret < 0) {
goto error;
}
ret = socks5_recv_connect_reply(conn);
if (ret < 0) {
goto error;
}
error:
return ret;
}
/*
* Using the given connection, do a SOCKS5 authentication with the
* username/password in the global configuration.
*
* Return 0 on success else a negative value on error.
*/
static int
auth_socks5(struct connection *conn)
{
int ret;
assert(conn);
ret = socks5_send_user_pass_request(conn,
tsocks_config.conf_file.socks5_username,
tsocks_config.conf_file.socks5_password);
if (ret < 0) {
goto error;
}
ret = socks5_recv_user_pass_reply(conn);
if (ret < 0) {
goto error;
}
error:
return ret;
}
