#!/usr/bin/env php
<?php
if(empty($argv[1]))
{
    echo "Usage: serverd {start|stop|restart|reload|kill|status}\n";
    exit;
}

$cmd = $argv[1];

define('WORKERMAN_ROOT_DIR', realpath(__DIR__."/../")."/");

// ==pid-file==
require_once WORKERMAN_ROOT_DIR . 'Core/Lib/Config.php';
if(!($pid_file = WORKERMAN\Core\Lib\Config::get('pid_file')))
{
    $pid_file = '/var/run/php-server.pid';
}
define('WORKERMAN_PID_FILE', $pid_file);

// ==log-dir==
if(!($log_dir = WORKERMAN\Core\Lib\Config::get('log_dir')))
{
    $log_dir = WORKERMAN_ROOT_DIR . 'logs/';
}
define('WORKERMAN_LOG_DIR', $log_dir . '/');

// ==ipc-key==
if(!($ipc_key = WORKERMAN\Core\Lib\Config::get('ipc_key')))
{
    $ipc_key = 0x70010a2e;
}
define('IPC_KEY', $ipc_key);

// ==shm-size==
if(!($shm_size = WORKERMAN\Core\Lib\Config::get('shm_size')))
{
    $shm_size = 393216;
}
define('DEFAULT_SHM_SIZE', $shm_size);

require_once WORKERMAN_ROOT_DIR . "Core/Master.php";

chdir(WORKERMAN_ROOT_DIR."Core");

//检查pid对应的进程是否存在，不存在删除PID文件
if($cmd != 'status' && is_file(WORKERMAN_PID_FILE))
{
    //检查权限
    if(!posix_access(WORKERMAN_PID_FILE, POSIX_W_OK))
    {
        if($stat = stat(WORKERMAN_PID_FILE))
        {
            if(($start_pwuid = posix_getpwuid($stat['uid'])) && ($current_pwuid = posix_getpwuid(posix_getuid())))
            {
                exit("\n\033[31;40mServer is started by user {$start_pwuid['name']}, {$current_pwuid['name']} can not $cmd Server, Permission denied\033[0m\n\n\033[31;40mServer $cmd failed\033[0m\n\n");
            }
        }
        exit("Can not $cmd Server, Permission denied\n");
    }
    //检查pid进程是否存在
    if($pid = @file_get_contents(WORKERMAN_PID_FILE))
    {
        if(false === posix_kill($pid, 0))
        {
            if(!unlink(WORKERMAN_PID_FILE))
            {
                exit("Can not $cmd Server\n\n");
            }
        }
    }
}

switch($cmd)
{
    case 'start':
        $worker_user = isset($argv[2]) ? $argv[2] : '';
        WORKERMAN\Core\Master::run($worker_user);
        break;
    case 'stop':
        $pid = @file_get_contents(WORKERMAN_PID_FILE);
        if(empty($pid))
        {
            exit("Server not running?\n");
        }
        stop_and_wait();
        break;
    case 'restart':
        stop_and_wait();
        $worker_user = isset($argv[2]) ? $argv[2] : '';
        WORKERMAN\Core\Master::run();
        break;
    case 'reload':
        $pid = @file_get_contents(WORKERMAN_PID_FILE);
        if(empty($pid))
        {
            exit("server not running?\n");
        }
        posix_kill($pid, SIGHUP);
        echo "reload PHP-Server\n";
        break;
    case 'kill':
        force_kill();
        force_kill();
        break;
    case 'status':
        $ip = '127.0.0.1';
        $port = WORKERMAN\Core\Lib\Config::get('workers.Monitor.socket.port');
        $port = $port ? $port : 10101;
        $address = "$ip:$port";
        $sock = @stream_socket_client($address);
        if(!$sock)
        {
            exit("\n\033[31;40mcan not connect to $address \033[0m\n\n\033[31;40mServer not running\033[0m\n\n");
        }
        fwrite($sock, 'status');
        $read_fds = array($sock);
        $write_fds = $except_fds = array();
        while($ret = stream_select($read_fds, $write_fds, $except_fds, 1))
        {
            if(!$ret)break;
            foreach($read_fds as $fd)
            {
                if($ret_str = fread($fd, 8192))
                {
                    echo $ret_str;
                }
                else
                {
                    exit;
                }
            }
        }
        break;
    default:
        echo "Usage: serverd {start|stop|restart|reload|kill|status}\n";
        exit;
        
}

function force_kill()
{
    $ret = $match = array();
    exec("ps aux | grep -E '".WORKERMAN\Core\Master::NAME.":|serverd' | grep -v grep", $ret);
    $this_pid = posix_getpid();
    $this_ppid = posix_getppid();
    foreach($ret as $line)
    {
        if(preg_match("/^[\S]+\s+(\d+)\s+/", $line, $match))
        {
            $tmp_pid = $match[1];
            if($this_pid != $tmp_pid && $this_ppid != $tmp_pid)
            {
                posix_kill($tmp_pid, SIGKILL);
            }
        }
    }
}

function stop_and_wait($wait_time = 6)
{
    $pid = @file_get_contents(WORKERMAN_PID_FILE);
    if(empty($pid))
    {
        //exit("server not running?\n");
    }
    else
    {
        $start_time = time();
        posix_kill($pid, SIGINT);
        while(is_file(WORKERMAN_PID_FILE))
        {
            clearstatcache();
            usleep(1000);
            if(time()-$start_time >= $wait_time)
            {
                force_kill();
                force_kill();
                unlink(WORKERMAN_PID_FILE);
                usleep(500000);
                break;
            }
        }
        echo "PHP-Server stoped\n";
    }
}