Server::get_default_settings() - Code Metrics - Inspection of "+ Yandex tank" - nokitakaze/php-testhttpserver - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( ebf796...01f05e )

by Никита

created 2017-05-29 22:16 UTC

Server::get_default_settings() A

↳ Parent: Server

Complexity

Conditions	1
Paths	1

Size

Total Lines	12
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	12
c	0
b	0
f	0
ccs	8
cts	8
cp	1
rs	9.4285
cc	1
eloc	9
nc	1
nop	0
crap	1

<?php

    namespace NokitaKaze\TestHTTPServer;

    /**
     * Class Server
     * @package NokitaKaze\TestHTTPServer
     *
     * @doc https://tools.ietf.org/html/rfc7230
     * @doc http://httpwg.org/specs/rfc7230.html
     */
    class Server {
        const CHUNK_SIZE = 4096;

        /**
         * @var ServerSettings
         */
        protected $_settings = null;

        /**
         * @var resource
         */
        protected $_server_socket = null;

        /**
         * @var resource
         */
        protected $_stream_context = null;

        /**
         * @var ClientDatum[]
         */
        protected $_client_connects = [];

        /**
         * Server constructor
         *
         * @param ServerSettings|object|array $settings
         *
         * @throws Exception
         */
        function __construct($settings) {
            $settings = (object) $settings;
            self::fix_incoming_settings($settings);
            $this->_settings = $settings;
            $this->init_ssl_settings();
        }

        function __destruct() {
            $this->shutdown();
        }

        function shutdown() {
            foreach ($this->_client_connects as &$connect) {
                $this->close_connection($connect);
            }
            $this->_client_connects = [];
            $this->close_connection_socket($this->_server_socket);
            $this->_server_socket = null;
        }

        /**
         * @param resource $connection
         */
        function close_connection_socket($connection) {
            if (is_resource($connection)) {
                fclose($connection);
            }
        }

        /**
         * @param object|ClientDatum $connection
         */
        function close_connection(&$connection) {
            if (is_null($connection)) {
                return;
            }
            $this->close_connection_socket($connection->client);
            $connection->client = null;
            $connection = null;
        }

        /**
         * @return array
         */
        static function get_default_settings() {
            return [
                'interface' => '127.0.0.1',
                'port' => 58080,
                'server_sleep_if_no_connect' => 1,
                'is_ssl' => false,
                'filterIncomingConnect' => function () { return true; },
                'server_maximum_chunk' => 300 * 1024,

                'time_wait_until_first_byte' => 60,
            ];
        }

        function init_ssl_settings() {
            $this->_stream_context = stream_context_create();
            if (isset($this->_settings->ssl_server_certificate_file)) {
                // @hint Здесь специально не задаётся _settings->is_ssl
                $this->stream_set_ssl_option('local_cert', $this->_settings->ssl_server_certificate_file);
                $this->stream_set_ssl_option('allow_self_signed', true);
                $this->stream_set_ssl_option('verify_peer', false);
                if (isset($this->_settings->ssl_server_key_file)) {
                    $this->stream_set_ssl_option('local_pk', $this->_settings->ssl_server_key_file);
                }
                $this->stream_set_ssl_option('passphrase',
                    isset($this->_settings->ssl_server_key_password) ? $this->_settings->ssl_server_key_password : '');

                if (isset($this->_settings->ssl_client_certificate_file)) {
                    $this->stream_set_ssl_option('verify_peer', true);
                    $this->stream_set_ssl_option('capture_peer_cert', true);
                    $this->stream_set_ssl_option('capture_peer_cert_chain', true);
                    $this->stream_set_ssl_option('cafile', $this->_settings->ssl_client_certificate_file);
                }
            } elseif (isset($this->_settings->ssl_server_key_file)) {
                throw new Exception('ssl_server_key_file is set, but ssl_server_certificate_file is missing');
            } elseif (isset($this->_settings->ssl_server_key_password)) {
                throw new Exception('ssl_server_key_password is set, but ssl_server_certificate_file is missing');
            } elseif (isset($this->_settings->ssl_client_certificate_file)) {
                throw new Exception('ssl_client_certificate_file is set, but ssl_server_certificate_file is missing');
            }
        }

        /**
         * Server constructor.
         *
         * @param ServerSettings|object $settings
         */
        protected static function fix_incoming_settings($settings) {
            $default_settings = self::get_default_settings();
            foreach ($default_settings as $key => $value) {
                if (!isset($settings->{$key})) {
                    $settings->{$key} = $value;
                }
            }
            foreach (['ListenStart', 'Connect', 'Request', 'Disconnect', 'ListenStop', 'AnyIncomingData', 'HeadIncomingData',
                      'BodyIncomingData', 'HeadReceived', 'HeadInvalidReceived'] as $event) {
                if (!isset($settings->{'on'.$event})) {
                    $settings->{'on'.$event} = null;
                }
            }
        }

        /**
         * @param callable|double $param
         * @param callable|null   $tick
         */
        function listen($param, $tick = null) {
            $this->init_listening();
            if (is_callable($param)) {
                $closure = $param;
            } else {
                $closure = function () use ($param) { return (microtime(true) < $param); };
            }
            /** @noinspection PhpMethodParametersCountMismatchInspection */
            while ($closure($this)) {
                $this->listen_tick();
                if (!is_null($tick)) {
                    $tick($this);
                }
            }
        }

        function init_listening() {
            if (!is_null($this->_server_socket)) {
                return;
            }
            $this->_server_socket = stream_socket_server(
                sprintf('%s://%s:%d',
                    $this->_settings->is_ssl ? 'ssl' : 'tcp',
                    is_null($this->_settings->interface) ? '0.0.0.0' : $this->_settings->interface,
                    $this->_settings->port
                ),
                $errno, $errstr, STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,
                $this->_stream_context);
            if (!isset($this->_server_socket)) {
                // @codeCoverageIgnoreStart
                throw new Exception('Can not create socket ['.$errstr.']', 100 + $errno);
                // @codeCoverageIgnoreEnd
            }

            $this->event_raise('ListenStart');
        }

        function listen_tick() {
            $read = [$this->_server_socket];
            $write = null;
            $except = null;
            if (stream_select($read, $write, $except, 0) === false) {
                // @codeCoverageIgnoreStart
                throw new Exception('Error on stream select');
                // @codeCoverageIgnoreEnd
            }
            if (empty($read)) {
                $ts_before = microtime(true);
                $this->process_all_connected_clients();
                $sleep = $this->_settings->server_sleep_if_no_connect - microtime(true) + $ts_before;
                if ($sleep > 0) {
                    usleep($sleep * 1000000);
                }

                return;
            }

            $client = @stream_socket_accept($this->_server_socket);
            if ($client === false) {
                $this->event_raise('InvalidConnection');

                // Если я не запущу process_all_connected_clients, то может быть DDoS через неправильные коннекты
                $this->process_all_connected_clients();

                return;
            }

            if (stream_set_blocking($client, 0) === false) {
                // @codeCoverageIgnoreStart
                throw new Exception('Can not set socket as non blocking');
                // @codeCoverageIgnoreEnd
            }
            $connect_time = microtime(true);
            /**
             * @var ClientDatum $datum
             */
            $datum = new \stdClass();
            $datum->status = 0;
            $datum->client = $client;
            $datum->connection_time = $connect_time;
            $datum->blob_request = '';
            $datum->request_head_params = [];
            $datum->server = $this;
            $datum->accepted_hosts = null;
            $this->event_raise('Connect', $datum);
            $this->_client_connects[] = $datum;

            //
            $this->process_all_connected_clients();
        }

        function stream_set_ssl_option($key, $value) {
            stream_context_set_option($this->_stream_context, 'ssl', $key, $value);
        }

        function set_option($key, $value) {
            $this->_settings->{$key} = $value;
        }

        function get_option($key) {
            return $this->_settings->{$key};
        }

        /**
         * Первый байт не пришёл
         *
         * @param object|ClientDatum $connection
         *
         * @return boolean
         */
        protected function check_timeouts_on_connection_first_byte($connection) {
            return isset($this->_settings->time_wait_until_first_byte) and
                   !isset($connection->first_byte_received_time) and
                   ($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_first_byte);
        }

        /**
         * Голова не пришла
         *
         * @param object|ClientDatum $connection
         *
         * @return boolean
         */
        protected function check_timeouts_on_connection_head_received($connection) {
            return isset($this->_settings->time_wait_until_head_received) and
                   !isset($connection->head_received_time) and
                   ($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_head_received);
        }

        /**
         * Запрос не пришёл
         *
         * @param object|ClientDatum $connection
         *
         * @return boolean
         */
        protected function check_timeouts_on_connection_request_received($connection) {
            return isset($this->_settings->time_wait_until_request_received) and
                   !isset($connection->full_request_received_time) and
                   ($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_request_received);
        }

        /**
         * Тело не пришло (голова пришла)
         *
         * @param object|ClientDatum $connection
         *
         * @return boolean
         */
        protected function check_timeouts_on_connection_body_received_without_head($connection) {
            return isset($this->_settings->time_between_head_and_body_received, $connection->head_received_time) and
                   !isset($connection->full_request_received_time) and
                   ($connection->head_received_time < microtime(true) - $this->_settings->time_between_head_and_body_received);
        }

        /**
         * Проверяем слишком старые подключения и убиваем их
         *
         * @param object|ClientDatum $connection
         *
         * @return bool
         */
        protected function check_timeouts_on_connection(&$connection) {
            if ($this->check_timeouts_on_connection_first_byte($connection) or
                $this->check_timeouts_on_connection_head_received($connection) or
                $this->check_timeouts_on_connection_request_received($connection) or
                $this->check_timeouts_on_connection_body_received_without_head($connection)
            ) {
                $this->close_connection($connection);

                return false;
            }

            // @hint No Slowloris ( https://en.wikipedia.org/wiki/Slowloris_%28computer_security%29 ) test.
            // This is not a real server

            return true;
        }

        /**
         * Processing all connected clients
         */
        protected function process_all_connected_clients() {
            if (empty($this->_client_connects)) {
                return;
            }

            /**
             * @var resource[] $read
             * @var resource[] $write
             * @var resource[] $except
             */
            $read = [];
            foreach ($this->_client_connects as $connected) {
                if (is_null($connected)) {
                    continue;
                }
                if (is_null($connected->client)) {
                    $connected = null;
                    continue;
                }

                if (!is_resource($connected->client)) {
                    // @codeCoverageIgnoreStart
                    throw new Exception(sprintf('Connection became non resource: %s', (string) $connected->client));
                    // @codeCoverageIgnoreEnd
                }

                // Проверяем слишком старые подключения и убиваем их
                if (!$this->check_timeouts_on_connection($connected)) {
                    continue;
                }

                $read[] = $connected->client;
            }
            if (empty($read)) {
                $this->_client_connects = [];

                return;
            }
            $write = null;
            $except = null;
            if (stream_select($read, $write, $except, 0) === false) {
                // @codeCoverageIgnoreStart
                throw new Exception('Error on stream select');
                // @codeCoverageIgnoreEnd
            }
            unset($connected);

            foreach ($read as &$socket_resource) {
                foreach ($this->_client_connects as &$connected) {
                    if (!is_null($connected) and ($connected->client == $socket_resource)) {
                        $this->process_connected_client($connected);
                        break;
                    }
                }
            }
        }

        /**
         * @param ClientDatum $connect
         * @param double      $time
         * @param string      $buf
         *
         * @return boolean
         */
        protected function receive_data_from_connected_client($connect, $time, &$buf) {
            $buf = @fread($connect->client, self::CHUNK_SIZE);
            if (empty($buf)) {
                $this->close_connection($connect);

                return false;
            }
            $connect->last_byte_received_time = $time;
            if (!isset($connect->first_byte_received_time)) {
                $connect->first_byte_received_time = $time;
            }
            if (strlen($buf) >= self::CHUNK_SIZE) {
                do {
                    $sub_buf = @fread($connect->client, self::CHUNK_SIZE);
                    $buf .= $sub_buf;
                    if (isset($this->_settings->server_maximum_chunk) and
                        (strlen($buf) >= $this->_settings->server_maximum_chunk)
                    ) {
                        // Слишком много пришло за один раз
                        break;
                    }
                } while (strlen($sub_buf) >= self::CHUNK_SIZE);
            }

            return true;
        }

        /**
         * Processing all connected clients
         *
         * @param ClientDatum $connect
         */
        protected function process_connected_client(&$connect) {
            $time = microtime(true);
            $connect->context_options = stream_context_get_options($connect->client);
            $connect->context_params = stream_context_get_params($connect->client);
            if (!$this->receive_data_from_connected_client($connect, $time, $buf)) {
                $this->close_connection($connect);

                return;
            }
            $this->event_raise('AnyIncomingData', $connect, $buf);
            if ($connect->status == 0) {
                $this->event_raise('HeadIncomingData', $connect, $buf);
            } elseif ($connect->status == 1) {
                $this->event_raise('BodyIncomingData', $connect, $buf);
            }
            $connect->blob_request .= $buf;
            if (strpos($connect->blob_request, "\r\n\r\n") === false) {
                // Head не дошёл
                return;
            }

            // Проверяем на голову
            // Голова только-только дошла
            if (($connect->status == 0) and !$this->process_connected_client_head($connect, $time)) {
                return;
            }

            // Проверяем на body
            if ($connect->status == 1) {
                $this->process_connected_client_body($connect, $buf, $time);
            }
            if (is_null($connect) or ($connect->status != 2)) {
                return;
            }

            // Проверяем, что Host в списке обрабатываемых
            if (!$this->check_requested_host_in_accepted_list($connect)) {
                return;
            }

            // filterIncomingConnect
            $closure = $this->_settings->filterIncomingConnect;
            if (!$closure($this, $connect)) {
                $this->close_connection($connect);

                return;
            }
            unset($closure, $buf);

            // Request
            $this->event_raise('Request', $connect);

            if ($connect->status == 3) {
                $this->close_connection($connect);
            }
        }

        function check_requested_host_in_accepted_list($connect) {
            if (!isset($this->_settings->accepted_hosts)) {
                return true;
            }

            list($host) = explode(':', $connect->request_head_params['Host']);
            if (!in_array(strtolower($host), $this->_settings->accepted_hosts)) {
                if ($this->event_raise('HostNotFound', $connect) === false) {
                    $this->close_connection($connect);

                    return false;
                }

                $this->answer($connect, 404, 'Not Found', 'Host not found');
                $this->close_connection($connect);

                return false;
            }

            return true;
        }

        /**
         * If returns "false" connection closed
         *
         * @param ClientDatum $connect
         * @param double      $time
         *
         * @return boolean
         */
        protected function process_connected_client_head(&$connect, $time) {
            $connect->head_received_time = $time;
            list($connect->blob_head) = explode("\r\n\r\n", $connect->blob_request, 2);
            $a = explode("\r\n", $connect->blob_head, 2);
            list($first_line, $other_lines) = (count($a) == 2) ? $a : [$a[0], ''];
            if (!preg_match('_^([A-Z]+)\\s+(.+)\\s+HTTP/([0-9.]+)$_', $first_line, $a)) {
                if ($this->event_raise('HeadInvalidReceived', $connect, 0) === false) {
                    // Подключение сдохло
                    $this->close_connection($connect);

                    return false;
                }

                $this->answer($connect, 400, 'Bad Request', "This is not a HTTP request");
                $this->close_connection($connect);

                return false;
            }

            $connect->request_type = $a[1];
            $connect->request_url = $a[2];
            $connect->request_http_version = $a[3];
            if ($connect->request_type == 'POST') {
                $connect->status = 1;
            } elseif ($connect->request_type == 'GET') {
                $connect->status = 2;
                $connect->full_request_received_time = $time;
            } else {
                if ($this->event_raise('HeadInvalidReceived', $connect, 1) === false) {
                    // Подключение сдохло
                    $this->close_connection($connect);

                    return false;
                }

                $this->answer($connect, 400, 'Bad Request', "Can not process this request type");
                $this->close_connection($connect);

                return false;
            }

            $connect->request_head_params = [];
            foreach (explode("\r\n", $other_lines) as $other_line) {
                if (empty($other_line) or !preg_match('_^([A-Za-z0-9-]+):\\s*(.*)$_', $other_line, $a)) {
                    if ($this->event_raise('HeadInvalidReceived', $connect, 2) === false) {
                        // Подключение сдохло
                        $this->close_connection($connect);

                        return false;
                    }

                    $this->answer($connect, 400, 'Bad Request', "Malformed head");
                    $this->close_connection($connect);

                    return false;
                }

                $connect->request_head_params[$a[1]] = $a[2];
            }

            if (!isset($connect->request_head_params['Host'])) {
                $this->answer($connect, 400, 'Bad Request', "Field 'host' missed");
                $this->close_connection($connect);

                return false;
            }

            // event
            $this->event_raise('HeadReceived', $connect);

            return true;
        }

        /**
         * If returns "false" connection closed
         *
         * @param ClientDatum $connect
         * @param string      $buf
         * @param double      $time
         */
        protected function process_connected_client_body(&$connect, $buf, $time) {
            $head_end = strpos($connect->blob_request, "\r\n\r\n");
            if (!isset($connect->request_head_params['Content-Length'])) {
                if ($this->event_raise('HeadInvalidReceived', $connect, 3) === false) {
                    $this->close_connection($connect);

                    return;
                }

                $this->answer($connect, 400, 'malformed request', 'Malformed request');
                $this->close_connection($connect);

                return;
            }
            $requested_body_length = (int) $connect->request_head_params['Content-Length'];
            if (strlen($connect->blob_request) >= $head_end + 4 + $requested_body_length) {
                $connect->blob_body = substr($connect->blob_request, $head_end + 4, $requested_body_length);
                $connect->status = 2;
                $connect->body_received_time = $time;
                $connect->full_request_received_time = $time;
                // @hint Request raised in process_connected_client
            }

            $this->event_raise('BodyIncomingData', $connect, $buf);
        }

        /**
         * @param string $event
         *
         * @return mixed|null
         */
        function event_raise($event) {
            $method_name = 'on'.$event;
            if (!isset($this->_settings->{$method_name}) or !is_callable($this->_settings->{$method_name})) {
                return null;
            }

            $args = func_get_args();
            $args[0] = $this;

            return call_user_func_array($this->_settings->{$method_name}, $args);
        }

        /**
         * @param ClientDatum $connect
         * @param integer     $code
         * @param string      $code_text
         * @param string      $body
         * @param array       $headers
         */
        function answer($connect, $code, $code_text, $body, array $headers = []) {
            $buf = sprintf("HTTP/1.0 %d %s\r\n", $code, $code_text);
            $headers['Content-Length'] = strlen($body);
            foreach ($headers as $key => &$value) {
                $buf .= sprintf("%s: %s\r\n", $key, $value);
            }
            fwrite($connect->client, "{$buf}\r\n{$body}");
        }
    }

?>

1		<?php
2
3		namespace NokitaKaze\TestHTTPServer;
4
5		/**
6		* Class Server
7		* @package NokitaKaze\TestHTTPServer
8		*
9		* @doc https://tools.ietf.org/html/rfc7230
10		* @doc http://httpwg.org/specs/rfc7230.html
11		*/
12		class Server {
13		const CHUNK_SIZE = 4096;
14
15		/**
16		* @var ServerSettings
17		*/
18		protected $_settings = null;
19
20		/**
21		* @var resource
22		*/
23		protected $_server_socket = null;
24
25		/**
26		* @var resource
27		*/
28		protected $_stream_context = null;
29
30		/**
31		* @var ClientDatum[]
32		*/
33		protected $_client_connects = [];
34
35		/**
36		* Server constructor
37		*
38		* @param ServerSettings\|object\|array $settings
39		*
40		* @throws Exception
41		*/
42	456	function __construct($settings) {
43	456	$settings = (object) $settings;
44	456	self::fix_incoming_settings($settings);
45	456	$this->_settings = $settings;
46	456	$this->init_ssl_settings();
47	447	}
48
49	447	function __destruct() {
50	447	$this->shutdown();
51	447	}
52
53	447	function shutdown() {
54	447	foreach ($this->_client_connects as &$connect) {
55	198	$this->close_connection($connect);
56	151	}
57	447	$this->_client_connects = [];
58	447	$this->close_connection_socket($this->_server_socket);
59	447	$this->_server_socket = null;
60	447	}
61
62		/**
63		* @param resource $connection
64		*/
65	447	function close_connection_socket($connection) {
66	447	if (is_resource($connection)) {
67	447	fclose($connection);
68	151	}
69	447	}
70
71		/**
72		* @param object\|ClientDatum $connection
73		*/
74	426	function close_connection(&$connection) {
75	426	if (is_null($connection)) {
76	183	return;
77		}
78	426	$this->close_connection_socket($connection->client);
79	426	$connection->client = null;
80	426	$connection = null;
81	426	}
82
83		/**
84		* @return array
85		*/
86	456	static function get_default_settings() {
87		return [
88	456	'interface' => '127.0.0.1',
89	456	'port' => 58080,
90	456	'server_sleep_if_no_connect' => 1,
91	154	'is_ssl' => false,
92		'filterIncomingConnect' => function () { return true; },
93	154	'server_maximum_chunk' => 300 * 1024,
94
95	456	'time_wait_until_first_byte' => 60,
96	154	];
97		}
98
99	456	function init_ssl_settings() {
100	456	$this->_stream_context = stream_context_create();
101	456	if (isset($this->_settings->ssl_server_certificate_file)) {
102		// @hint Здесь специально не задаётся _settings->is_ssl
103	309	$this->stream_set_ssl_option('local_cert', $this->_settings->ssl_server_certificate_file);
104	309	$this->stream_set_ssl_option('allow_self_signed', true);
105	309	$this->stream_set_ssl_option('verify_peer', false);
106	309	if (isset($this->_settings->ssl_server_key_file)) {
107	309	$this->stream_set_ssl_option('local_pk', $this->_settings->ssl_server_key_file);
108	103	}
109	309	$this->stream_set_ssl_option('passphrase',
110	309	isset($this->_settings->ssl_server_key_password) ? $this->_settings->ssl_server_key_password : '');
111
112	309	if (isset($this->_settings->ssl_client_certificate_file)) {
113	36	$this->stream_set_ssl_option('verify_peer', true);
114	36	$this->stream_set_ssl_option('capture_peer_cert', true);
115	36	$this->stream_set_ssl_option('capture_peer_cert_chain', true);
116	127	$this->stream_set_ssl_option('cafile', $this->_settings->ssl_client_certificate_file);
117	12	}
118	154	} elseif (isset($this->_settings->ssl_server_key_file)) {
119	3	throw new Exception('ssl_server_key_file is set, but ssl_server_certificate_file is missing');
120	50	} elseif (isset($this->_settings->ssl_server_key_password)) {
121	3	throw new Exception('ssl_server_key_password is set, but ssl_server_certificate_file is missing');
122	49	} elseif (isset($this->_settings->ssl_client_certificate_file)) {
123	3	throw new Exception('ssl_client_certificate_file is set, but ssl_server_certificate_file is missing');
124		}
125	447	}
126
127		/**
128		* Server constructor.
129		*
130		* @param ServerSettings\|object $settings
131		*/
132	456	protected static function fix_incoming_settings($settings) {
133	456	$default_settings = self::get_default_settings();
134	456	foreach ($default_settings as $key => $value) {
135	456	if (!isset($settings->{$key})) {
136	456	$settings->{$key} = $value;
137	154	}
138	154	}
139	456	foreach (['ListenStart', 'Connect', 'Request', 'Disconnect', 'ListenStop', 'AnyIncomingData', 'HeadIncomingData',
140	154	'BodyIncomingData', 'HeadReceived', 'HeadInvalidReceived'] as $event) {
141	456	if (!isset($settings->{'on'.$event})) {
142	456	$settings->{'on'.$event} = null;
143	154	}
144	154	}
145	456	}
146
147		/**
148		* @param callable\|double $param
149		* @param callable\|null $tick
150		*/
151	24	function listen($param, $tick = null) {
152	24	$this->init_listening();
153	24	if (is_callable($param)) {
154	24	$closure = $param;
155	10	} else {
156		$closure = function () use ($param) { return (microtime(true) < $param); };
157		}
158		/** @noinspection PhpMethodParametersCountMismatchInspection */
159	24	while ($closure($this)) {
160	24	$this->listen_tick();
161	24	if (!is_null($tick)) {
162		$tick($this);
163		}
164	10	}
165	24	}
166
167	447	function init_listening() {
168	447	if (!is_null($this->_server_socket)) {
169	24	return;
170		}
171	447	$this->_server_socket = stream_socket_server(
172	447	sprintf('%s://%s:%d',
173	447	$this->_settings->is_ssl ? 'ssl' : 'tcp',
174	447	is_null($this->_settings->interface) ? '0.0.0.0' : $this->_settings->interface,
175	447	$this->_settings->port
176	151	),
177	447	$errno, $errstr, STREAM_SERVER_BIND \| STREAM_SERVER_LISTEN,
178	447	$this->_stream_context);
179	447	if (!isset($this->_server_socket)) {
180		// @codeCoverageIgnoreStart
181		throw new Exception('Can not create socket ['.$errstr.']', 100 + $errno);
182		// @codeCoverageIgnoreEnd
183		}
184
185	447	$this->event_raise('ListenStart');
186	447	}
187
188	447	function listen_tick() {
189	447	$read = [$this->_server_socket];
190	447	$write = null;
191	447	$except = null;
192	447	if (stream_select($read, $write, $except, 0) === false) {
193		// @codeCoverageIgnoreStart
194		throw new Exception('Error on stream select');
195		// @codeCoverageIgnoreEnd
196		}
197	447	if (empty($read)) {
198	447	$ts_before = microtime(true);
199	447	$this->process_all_connected_clients();
200	447	$sleep = $this->_settings->server_sleep_if_no_connect - microtime(true) + $ts_before;
201	447	if ($sleep > 0) {
202	447	usleep($sleep * 1000000);
203	151	}
204
205	447	return;
206		}
207
208	438	$client = @stream_socket_accept($this->_server_socket);
209	438	if ($client === false) {
210	21	$this->event_raise('InvalidConnection');
211
212		// Если я не запущу process_all_connected_clients, то может быть DDoS через неправильные коннекты
213	21	$this->process_all_connected_clients();
214
215	21	return;
216		}
217
218	426	if (stream_set_blocking($client, 0) === false) {
219		// @codeCoverageIgnoreStart
220		throw new Exception('Can not set socket as non blocking');
221		// @codeCoverageIgnoreEnd
222		}
223	426	$connect_time = microtime(true);
224		/**
225		* @var ClientDatum $datum
226		*/
227	426	$datum = new \stdClass();
228	426	$datum->status = 0;
229	426	$datum->client = $client;
230	426	$datum->connection_time = $connect_time;
231	426	$datum->blob_request = '';
232	426	$datum->request_head_params = [];
233	426	$datum->server = $this;
234	426	$datum->accepted_hosts = null;
235	426	$this->event_raise('Connect', $datum);
236	426	$this->_client_connects[] = $datum;
237
238		//
239	426	$this->process_all_connected_clients();
240	426	}
241
242	318	function stream_set_ssl_option($key, $value) {
243	318	stream_context_set_option($this->_stream_context, 'ssl', $key, $value);
244	318	}
245
246	12	function set_option($key, $value) {
247	12	$this->_settings->{$key} = $value;
248	12	}
249
250	3	function get_option($key) {
251	3	return $this->_settings->{$key};
252		}
253
254		/**
255		* Первый байт не пришёл
256		*
257		* @param object\|ClientDatum $connection
258		*
259		* @return boolean
260		*/
261	426	protected function check_timeouts_on_connection_first_byte($connection) {
262	426	return isset($this->_settings->time_wait_until_first_byte) and
263	426	!isset($connection->first_byte_received_time) and
264	426	($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_first_byte);
265		}
266
267		/**
268		* Голова не пришла
269		*
270		* @param object\|ClientDatum $connection
271		*
272		* @return boolean
273		*/
274	426	protected function check_timeouts_on_connection_head_received($connection) {
275	426	return isset($this->_settings->time_wait_until_head_received) and
276	287	!isset($connection->head_received_time) and
277	426	($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_head_received);
278		}
279
280		/**
281		* Запрос не пришёл
282		*
283		* @param object\|ClientDatum $connection
284		*
285		* @return boolean
286		*/
287	426	protected function check_timeouts_on_connection_request_received($connection) {
288	426	return isset($this->_settings->time_wait_until_request_received) and
289	287	!isset($connection->full_request_received_time) and
290	426	($connection->connection_time < microtime(true) - $this->_settings->time_wait_until_request_received);
291		}
292
293		/**
294		* Тело не пришло (голова пришла)
295		*
296		* @param object\|ClientDatum $connection
297		*
298		* @return boolean
299		*/
300	426	protected function check_timeouts_on_connection_body_received_without_head($connection) {
301	426	return isset($this->_settings->time_between_head_and_body_received, $connection->head_received_time) and
302	287	!isset($connection->full_request_received_time) and
303	426	($connection->head_received_time < microtime(true) - $this->_settings->time_between_head_and_body_received);
304		}
305
306		/**
307		* Проверяем слишком старые подключения и убиваем их
308		*
309		* @param object\|ClientDatum $connection
310		*
311		* @return bool
312		*/
313	426	protected function check_timeouts_on_connection(&$connection) {
314	426	if ($this->check_timeouts_on_connection_first_byte($connection) or
315	426	$this->check_timeouts_on_connection_head_received($connection) or
316	426	$this->check_timeouts_on_connection_request_received($connection) or
317	426	$this->check_timeouts_on_connection_body_received_without_head($connection)
318	144	) {
319	18	$this->close_connection($connection);
320
321	18	return false;
322		}
323
324		// @hint No Slowloris ( https://en.wikipedia.org/wiki/Slowloris_%28computer_security%29 ) test.
325		// This is not a real server
326
327	426	return true;
328		}
329
330		/**
331		* Processing all connected clients
332		*/
333	447	protected function process_all_connected_clients() {
334	447	if (empty($this->_client_connects)) {
335	447	return;
336		}
337
338		/**
339		* @var resource[] $read
340		* @var resource[] $write
341		* @var resource[] $except
342		*/
343	426	$read = [];
344	426	foreach ($this->_client_connects as $connected) {
345	426	if (is_null($connected)) {
346	165	continue;
347		}
348	426	if (is_null($connected->client)) {
349	45	$connected = null;
350	45	continue;
351		}
352
353	426	if (!is_resource($connected->client)) {
354		// @codeCoverageIgnoreStart
355		throw new Exception(sprintf('Connection became non resource: %s', (string) $connected->client));
356		// @codeCoverageIgnoreEnd
357		}
358
359		// Проверяем слишком старые подключения и убиваем их
360	426	if (!$this->check_timeouts_on_connection($connected)) {
361	18	continue;
362		}
363
364	426	$read[] = $connected->client;
365	144	}
366	426	if (empty($read)) {
367	228	$this->_client_connects = [];
368
369	228	return;
370		}
371	426	$write = null;
372	426	$except = null;
373	426	if (stream_select($read, $write, $except, 0) === false) {
374		// @codeCoverageIgnoreStart
375		throw new Exception('Error on stream select');
376		// @codeCoverageIgnoreEnd
377		}
378	426	unset($connected);
379
380	426	foreach ($read as &$socket_resource) {
381	414	foreach ($this->_client_connects as &$connected) {
382	414	if (!is_null($connected) and ($connected->client == $socket_resource)) {
383	414	$this->process_connected_client($connected);
384	414	break;
385		}
386	140	}
387	144	}
388	426	}
389
390		/**
391		* @param ClientDatum $connect
392		* @param double $time
393		* @param string $buf
394		*
395		* @return boolean
396		*/
397	414	protected function receive_data_from_connected_client($connect, $time, &$buf) {
398	414	$buf = @fread($connect->client, self::CHUNK_SIZE);
399	414	if (empty($buf)) {
400	96	$this->close_connection($connect);
401
402	96	return false;
403		}
404	333	$connect->last_byte_received_time = $time;
405	333	if (!isset($connect->first_byte_received_time)) {
406	333	$connect->first_byte_received_time = $time;
407	113	}
408	333	if (strlen($buf) >= self::CHUNK_SIZE) {
409		do {
410	24	$sub_buf = @fread($connect->client, self::CHUNK_SIZE);
411	24	$buf .= $sub_buf;
412	24	if (isset($this->_settings->server_maximum_chunk) and
413	24	(strlen($buf) >= $this->_settings->server_maximum_chunk)
414	8	) {
415		// Слишком много пришло за один раз
416	6	break;
417		}
418	18	} while (strlen($sub_buf) >= self::CHUNK_SIZE);
419	8	}
420
421	333	return true;
422		}
423
424		/**
425		* Processing all connected clients
426		*
427		* @param ClientDatum $connect
428		*/
429	414	protected function process_connected_client(&$connect) {
430	414	$time = microtime(true);
431	414	$connect->context_options = stream_context_get_options($connect->client);
432	414	$connect->context_params = stream_context_get_params($connect->client);
433	414	if (!$this->receive_data_from_connected_client($connect, $time, $buf)) {
434	96	$this->close_connection($connect);
435
436	96	return;
437		}
438	333	$this->event_raise('AnyIncomingData', $connect, $buf);
439	333	if ($connect->status == 0) {
440	333	$this->event_raise('HeadIncomingData', $connect, $buf);
441	147	} elseif ($connect->status == 1) {
442	51	$this->event_raise('BodyIncomingData', $connect, $buf);
443	17	}
444	333	$connect->blob_request .= $buf;
445	333	if (strpos($connect->blob_request, "\r\n\r\n") === false) {
446		// Head не дошёл
447	6	return;
448		}
449
450		// Проверяем на голову
451		// Голова только-только дошла
452	327	if (($connect->status == 0) and !$this->process_connected_client_head($connect, $time)) {
453	42	return;
454		}
455
456		// Проверяем на body
457	285	if ($connect->status == 1) {
458	72	$this->process_connected_client_body($connect, $buf, $time);
459	24	}
460	285	if (is_null($connect) or ($connect->status != 2)) {
461	69	return;
462		}
463
464		// Проверяем, что Host в списке обрабатываемых
465	267	if (!$this->check_requested_host_in_accepted_list($connect)) {
466	54	return;
467		}
468
469		// filterIncomingConnect
470	213	$closure = $this->_settings->filterIncomingConnect;
471	213	if (!$closure($this, $connect)) {
472	6	$this->close_connection($connect);
473
474	6	return;
475		}
476	207	unset($closure, $buf);
477
478		// Request
479	207	$this->event_raise('Request', $connect);
480
481	207	if ($connect->status == 3) {
482	207	$this->close_connection($connect);
483	71	}
484	207	}
485
486	267	function check_requested_host_in_accepted_list($connect) {
487	267	if (!isset($this->_settings->accepted_hosts)) {
488	162	return true;
489		}
490
491	105	list($host) = explode(':', $connect->request_head_params['Host']);
492	105	if (!in_array(strtolower($host), $this->_settings->accepted_hosts)) {
493	54	if ($this->event_raise('HostNotFound', $connect) === false) {
494	9	$this->close_connection($connect);
495
496	9	return false;
497		}
498
499	45	$this->answer($connect, 404, 'Not Found', 'Host not found');
500	45	$this->close_connection($connect);
501
502	45	return false;
503		}
504
505	51	return true;
506		}
507
508		/**
509		* If returns "false" connection closed
510		*
511		* @param ClientDatum $connect
512		* @param double $time
513		*
514		* @return boolean
515		*/
516	327	protected function process_connected_client_head(&$connect, $time) {
517	327	$connect->head_received_time = $time;
518	327	list($connect->blob_head) = explode("\r\n\r\n", $connect->blob_request, 2);
519	327	$a = explode("\r\n", $connect->blob_head, 2);
520	327	list($first_line, $other_lines) = (count($a) == 2) ? $a : [$a[0], ''];
521	327	if (!preg_match('_^([A-Z]+)\\s+(.+)\\s+HTTP/([0-9.]+)$_', $first_line, $a)) {
522	12	if ($this->event_raise('HeadInvalidReceived', $connect, 0) === false) {
523		// Подключение сдохло
524	6	$this->close_connection($connect);
525
526	6	return false;
527		}
528
529	6	$this->answer($connect, 400, 'Bad Request', "This is not a HTTP request");
530	6	$this->close_connection($connect);
531
532	6	return false;
533		}
534
535	315	$connect->request_type = $a[1];
536	315	$connect->request_url = $a[2];
537	315	$connect->request_http_version = $a[3];
538	315	if ($connect->request_type == 'POST') {
539	72	$connect->status = 1;
540	267	} elseif ($connect->request_type == 'GET') {
541	231	$connect->status = 2;
542	231	$connect->full_request_received_time = $time;
543	79	} else {
544	12	if ($this->event_raise('HeadInvalidReceived', $connect, 1) === false) {
545		// Подключение сдохло
546	6	$this->close_connection($connect);
547
548	6	return false;
549		}
550
551	6	$this->answer($connect, 400, 'Bad Request', "Can not process this request type");
552	6	$this->close_connection($connect);
553
554	6	return false;
555		}
556
557	303	$connect->request_head_params = [];
558	303	foreach (explode("\r\n", $other_lines) as $other_line) {
559	303	if (empty($other_line) or !preg_match('_^([A-Za-z0-9-]+):\\s(.)$_', $other_line, $a)) {
560	12	if ($this->event_raise('HeadInvalidReceived', $connect, 2) === false) {
561		// Подключение сдохло
562	6	$this->close_connection($connect);
563
564	6	return false;
565		}
566
567	6	$this->answer($connect, 400, 'Bad Request', "Malformed head");
568	6	$this->close_connection($connect);
569
570	6	return false;
571		}
572
573	303	$connect->request_head_params[$a[1]] = $a[2];
574	103	}
575
576	291	if (!isset($connect->request_head_params['Host'])) {
577	6	$this->answer($connect, 400, 'Bad Request', "Field 'host' missed");
578	6	$this->close_connection($connect);
579
580	6	return false;
581		}
582
583		// event
584	285	$this->event_raise('HeadReceived', $connect);
585
586	285	return true;
587		}
588
589		/**
590		* If returns "false" connection closed
591		*
592		* @param ClientDatum $connect
593		* @param string $buf
594		* @param double $time
595		*/
596	72	protected function process_connected_client_body(&$connect, $buf, $time) {
597	72	$head_end = strpos($connect->blob_request, "\r\n\r\n");
598	72	if (!isset($connect->request_head_params['Content-Length'])) {
599	12	if ($this->event_raise('HeadInvalidReceived', $connect, 3) === false) {
600	6	$this->close_connection($connect);
601
602	6	return;
603		}
604
605	6	$this->answer($connect, 400, 'malformed request', 'Malformed request');
606	6	$this->close_connection($connect);
607
608	6	return;
609		}
610	60	$requested_body_length = (int) $connect->request_head_params['Content-Length'];
611	60	if (strlen($connect->blob_request) >= $head_end + 4 + $requested_body_length) {
612	54	$connect->blob_body = substr($connect->blob_request, $head_end + 4, $requested_body_length);
613	54	$connect->status = 2;
614	54	$connect->body_received_time = $time;
615	54	$connect->full_request_received_time = $time;
616		// @hint Request raised in process_connected_client
617	18	}
618
619	60	$this->event_raise('BodyIncomingData', $connect, $buf);
620	60	}
621
622		/**
623		* @param string $event
624		*
625		* @return mixed\|null
626		*/
627	447	function event_raise($event) {
628	447	$method_name = 'on'.$event;
629	447	if (!isset($this->_settings->{$method_name}) or !is_callable($this->_settings->{$method_name})) {
630	447	return null;
631		}
632
633	261	$args = func_get_args();
634	261	$args[0] = $this;
635
636	261	return call_user_func_array($this->_settings->{$method_name}, $args);
637		}
638
639		/**
640		* @param ClientDatum $connect
641		* @param integer $code
642		* @param string $code_text
643		* @param string $body
644		* @param array $headers
645		*/
646	321	function answer($connect, $code, $code_text, $body, array $headers = []) {
647	321	$buf = sprintf("HTTP/1.0 %d %s\r\n", $code, $code_text);
648	321	$headers['Content-Length'] = strlen($body);
649	321	foreach ($headers as $key => &$value) {
650	321	$buf .= sprintf("%s: %s\r\n", $key, $value);
651	109	}
652	321	fwrite($connect->client, "{$buf}\r\n{$body}");
653	321	}
654		}
655
656		?>

nokitakaze / php-testhttpserver

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Server::get_default_settings() A

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