139 lines
4.1 KiB
PHP
Executable File
139 lines
4.1 KiB
PHP
Executable File
<?php
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include "config.inc.php";
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include ("$file_newsportal");
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include $config_dir . "/scripts/rslight-lib.php";
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if (file_exists($config_dir . "/nntp.disable")) {
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clearstatcache(true, $config_dir . "/nntp.disable");
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$parent_pid = file_get_contents($lockdir . '/rslight-nntp.lock', IGNORE_NEW_LINES);
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posix_kill($parent_pid, SIGTERM);
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exit();
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}
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/**
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* Listens for requests and forks on each connection
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*/
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$__server_listening = true;
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// error_reporting(E_ALL);
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set_time_limit(0);
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ob_implicit_flush();
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declare(ticks = 1);
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become_daemon();
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/* nobody/nogroup, change to your host's uid/gid of the non-priv user */
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/* handle signals */
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pcntl_signal(SIGTERM, 'sig_handler');
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pcntl_signal(SIGINT, 'sig_handler');
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pcntl_signal(SIGCHLD, 'sig_handler');
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if (isset($CONFIG['enable_all_networks']) && $CONFIG['enable_all_networks'] == true) {
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$bind = "0.0.0.0";
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} else {
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$bind = $CONFIG['local_server'];
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}
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server_loop($bind, $CONFIG['local_port']);
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/**
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* Change the identity to a non-priv user
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*/
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function change_identity($uid, $gid)
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{
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if (! posix_setgid($gid)) {
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print "Unable to setgid to " . $gid . "!\n";
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exit();
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}
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if (! posix_setuid($uid)) {
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print "Unable to setuid to " . $uid . "!\n";
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exit();
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}
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}
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/**
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* Creates a server socket and listens for incoming client connections
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*
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* @param string $address
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* The address to listen on
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* @param int $port
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* The port to listen on
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*/
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function server_loop($address, $port)
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{
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GLOBAL $__server_listening;
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GLOBAL $CONFIG, $logdir, $lockdir, $webserver_uid, $webserver_gid, $installed_path, $config_path, $groupconfig, $workpath, $path, $spooldir, $nntp_group, $auth_ok;
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$logfile = $logdir . '/nntp.log';
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$lockfile = $lockdir . '/rslight-nntp.lock';
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$pid = file_get_contents($lockfile);
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if (posix_getsid($pid) === false || ! is_file($lockfile)) {
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print "Starting Rocksolid Light NNTP Server...\n";
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file_put_contents($lockfile, getmypid()); // create lockfile
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} else {
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print "Rocksolid Light NNTP Server currently running\n";
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exit();
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}
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$auth_ok = 0;
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$user = "";
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$pass = "";
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$sock = stream_socket_server('tcp://' . $address . ':' . $port, $errno, $errstr, STREAM_SERVER_BIND | STREAM_SERVER_LISTEN);
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/* Change to non root user */
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$uinfo = posix_getpwnam($CONFIG['webserver_user']);
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change_identity($uinfo["uid"], $uinfo["gid"]);
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/* Everything below runs as $CONFIG['webserver_user'] */
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echo "waiting for clients to connect\n";
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while ($__server_listening) {
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$connection = stream_socket_accept($sock);
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if ($connection === false) {
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usleep(100);
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} elseif ($connection > 0) {
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handle_client($sock, $connection);
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} else {
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echo "error: " . socket_strerror($connection);
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file_put_contents($logfile, "\n" . format_log_date() . " error: " . socket_strerror($connection), FILE_APPEND);
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die();
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}
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}
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}
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/**
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* Signal handler
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*/
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function sig_handler($sig)
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{
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switch ($sig) {
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case SIGTERM:
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case SIGINT:
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exit();
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break;
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case SIGCHLD:
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pcntl_waitpid(- 1, $status);
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break;
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}
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}
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/**
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* Handle a new client connection
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*/
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function handle_client($ssock, $csock)
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{
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GLOBAL $__server_listening;
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$pid = pcntl_fork();
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if ($pid == - 1) {
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/* fork failed */
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echo "fork failure!\n";
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die();
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} elseif ($pid == 0) {
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/* child process */
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$__server_listening = false;
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fclose($ssock);
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interact($csock, false);
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fclose($csock);
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} else {
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fclose($csock);
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}
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}
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?>
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