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WebServer.php
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WebServer.php
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<?php
/**
* This file is part of workerman.
*
* Licensed under The MIT License
* For full copyright and license information, please see the MIT-LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @author walkor<walkor@workerman.net>
* @copyright walkor<walkor@workerman.net>
* @link http://www.workerman.net/
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Workerman;
use Workerman\Protocols\Http;
use Workerman\Protocols\HttpCache;
/**
* WebServer.
*/
class WebServer extends Worker
{
/**
* Virtual host to path mapping.
*
* @var array ['workerman.net'=>'/home', 'www.workerman.net'=>'home/www']
*/
protected $serverRoot = array();
/**
* Mime mapping.
*
* @var array
*/
protected static $mimeTypeMap = array();
/**
* Used to save user OnWorkerStart callback settings.
*
* @var callback
*/
protected $_onWorkerStart = null;
/**
* Add virtual host.
*
* @param string $domain
* @param string $config
* @return void
*/
public function addRoot($domain, $config)
{
if (is_string($config)) {
$config = array('root' => $config);
}
$this->serverRoot[$domain] = $config;
}
/**
* Construct.
*
* @param string $socket_name
* @param array $context_option
*/
public function __construct($socket_name, $context_option = array())
{
list(, $address) = \explode(':', $socket_name, 2);
parent::__construct('http:' . $address, $context_option);
$this->name = 'WebServer';
}
/**
* Run webserver instance.
*
* @see Workerman.Worker::run()
*/
public function run()
{
$this->_onWorkerStart = $this->onWorkerStart;
$this->onWorkerStart = array($this, 'onWorkerStart');
$this->onMessage = array($this, 'onMessage');
parent::run();
}
/**
* Emit when process start.
*
* @throws \Exception
*/
public function onWorkerStart()
{
if (empty($this->serverRoot)) {
Worker::safeEcho(new \Exception('server root not set, please use WebServer::addRoot($domain, $root_path) to set server root path'));
exit(250);
}
// Init mimeMap.
$this->initMimeTypeMap();
// Try to emit onWorkerStart callback.
if ($this->_onWorkerStart) {
try {
\call_user_func($this->_onWorkerStart, $this);
} catch (\Exception $e) {
self::log($e);
exit(250);
} catch (\Error $e) {
self::log($e);
exit(250);
}
}
}
/**
* Init mime map.
*
* @return void
*/
public function initMimeTypeMap()
{
$mime_file = Http::getMimeTypesFile();
if (!\is_file($mime_file)) {
$this->log("$mime_file mime.type file not fond");
return;
}
$items = \file($mime_file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
if (!\is_array($items)) {
$this->log("get $mime_file mime.type content fail");
return;
}
foreach ($items as $content) {
if (\preg_match("/\s*(\S+)\s+(\S.+)/", $content, $match)) {
$mime_type = $match[1];
$workerman_file_extension_var = $match[2];
$workerman_file_extension_array = \explode(' ', \substr($workerman_file_extension_var, 0, -1));
foreach ($workerman_file_extension_array as $workerman_file_extension) {
self::$mimeTypeMap[$workerman_file_extension] = $mime_type;
}
}
}
}
/**
* Emit when http message coming.
*
* @param Connection\TcpConnection $connection
* @return void
*/
public function onMessage($connection)
{
// REQUEST_URI.
$workerman_url_info = \parse_url('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
if (!$workerman_url_info) {
Http::header('HTTP/1.1 400 Bad Request');
if (\strtolower($_SERVER['HTTP_CONNECTION']) === "keep-alive") {
$connection->send('<h1>400 Bad Request</h1>');
} else {
$connection->close('<h1>400 Bad Request</h1>');
}
return;
}
$workerman_path = isset($workerman_url_info['path']) ? $workerman_url_info['path'] : '/';
$workerman_path_info = \pathinfo($workerman_path);
$workerman_file_extension = isset($workerman_path_info['extension']) ? $workerman_path_info['extension'] : '';
if ($workerman_file_extension === '') {
$workerman_path = ($len = \strlen($workerman_path)) && $workerman_path[$len - 1] === '/' ? $workerman_path . 'index.php' : $workerman_path . '/index.php';
$workerman_file_extension = 'php';
}
$workerman_siteConfig = isset($this->serverRoot[$_SERVER['SERVER_NAME']]) ? $this->serverRoot[$_SERVER['SERVER_NAME']] : current($this->serverRoot);
$workerman_root_dir = $workerman_siteConfig['root'];
$workerman_file = "$workerman_root_dir/$workerman_path";
if(isset($workerman_siteConfig['additionHeader'])){
Http::header($workerman_siteConfig['additionHeader']);
}
if ($workerman_file_extension === 'php' && !\is_file($workerman_file)) {
$workerman_file = "$workerman_root_dir/index.php";
if (!\is_file($workerman_file)) {
$workerman_file = "$workerman_root_dir/index.html";
$workerman_file_extension = 'html';
}
}
// File exsits.
if (\is_file($workerman_file)) {
// Security check.
if ((!($workerman_request_realpath = \realpath($workerman_file)) || !($workerman_root_dir_realpath = \realpath($workerman_root_dir))) || 0 !== \strpos($workerman_request_realpath,
$workerman_root_dir_realpath)
) {
Http::header('HTTP/1.1 400 Bad Request');
if (\strtolower($_SERVER['HTTP_CONNECTION']) === "keep-alive") {
$connection->send('<h1>400 Bad Request</h1>');
} else {
$connection->close('<h1>400 Bad Request</h1>');
}
return;
}
$workerman_file = \realpath($workerman_file);
// Request php file.
if ($workerman_file_extension === 'php') {
$workerman_cwd = getcwd();
\chdir($workerman_root_dir);
\ini_set('display_errors', 'off');
\ob_start();
// Try to include php file.
try {
// $_SERVER.
$_SERVER['REMOTE_ADDR'] = $connection->getRemoteIp();
$_SERVER['REMOTE_PORT'] = $connection->getRemotePort();
include $workerman_file;
} catch (\Exception $e) {
// Jump_exit?
if ($e->getMessage() != 'jump_exit') {
Worker::safeEcho($e);
}
}
$content = \ob_get_clean();
\ini_set('display_errors', 'on');
if (\strtolower($_SERVER['HTTP_CONNECTION']) === "keep-alive") {
$connection->send($content);
} else {
$connection->close($content);
}
\chdir($workerman_cwd);
return;
}
// Send file to client.
return self::sendFile($connection, $workerman_file);
} else {
// 404
Http::header("HTTP/1.1 404 Not Found");
if(isset($workerman_siteConfig['custom404']) && file_exists($workerman_siteConfig['custom404'])){
$html404 = \file_get_contents($workerman_siteConfig['custom404']);
}else{
$html404 = '<html><head><title>404 File not found</title></head><body><center><h3>404 Not Found</h3></center></body></html>';
}
if (\strtolower($_SERVER['HTTP_CONNECTION']) === "keep-alive") {
$connection->send($html404);
} else {
$connection->close($html404);
}
return;
}
}
public static function sendFile($connection, $file_path)
{
// Check 304.
$info = stat($file_path);
$modified_time = $info ? \date('D, d M Y H:i:s', $info['mtime']) . ' ' . \date_default_timezone_get() : '';
if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $info) {
// Http 304.
if ($modified_time === $_SERVER['HTTP_IF_MODIFIED_SINCE']) {
// 304
Http::header('HTTP/1.1 304 Not Modified');
// Send nothing but http headers..
if (\strtolower($_SERVER['HTTP_CONNECTION']) === "keep-alive") {
$connection->send('');
} else {
$connection->close('');
}
return;
}
}
// Http header.
if ($modified_time) {
$modified_time = "Last-Modified: $modified_time\r\n";
}
$file_size = \filesize($file_path);
$file_info = \pathinfo($file_path);
$extension = isset($file_info['extension']) ? $file_info['extension'] : '';
$file_name = isset($file_info['filename']) ? $file_info['filename'] : '';
$header = "HTTP/1.1 200 OK\r\n";
if (isset(self::$mimeTypeMap[$extension])) {
$header .= "Content-Type: " . self::$mimeTypeMap[$extension] . "\r\n";
} else {
$header .= "Content-Type: application/octet-stream\r\n";
$header .= "Content-Disposition: attachment; filename=\"$file_name\"\r\n";
}
$header .= "Connection: keep-alive\r\n";
$header .= $modified_time;
$header .= "Content-Length: $file_size\r\n\r\n";
$trunk_limit_size = 1024*1024;
if ($file_size < $trunk_limit_size) {
return $connection->send($header.\file_get_contents($file_path), true);
}
$connection->send($header, true);
// Read file content from disk piece by piece and send to client.
$connection->fileHandler = \fopen($file_path, 'r');
$do_write = function()use($connection)
{
// Send buffer not full.
while(empty($connection->bufferFull))
{
// Read from disk.
$buffer = \fread($connection->fileHandler, 8192);
// Read eof.
if($buffer === '' || $buffer === false)
{
return;
}
$connection->send($buffer, true);
}
};
// Send buffer full.
$connection->onBufferFull = function($connection)
{
$connection->bufferFull = true;
};
// Send buffer drain.
$connection->onBufferDrain = function($connection)use($do_write)
{
$connection->bufferFull = false;
$do_write();
};
$do_write();
}
}