192 lines
6.3 KiB
PHP
192 lines
6.3 KiB
PHP
<?php
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/**
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* HTTP stream wrapper.
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*
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* This file is part of MadelineProto.
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* MadelineProto is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
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* MadelineProto is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Affero General Public License for more details.
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* You should have received a copy of the GNU General Public License along with MadelineProto.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* @author Daniil Gentili <daniil@daniil.it>
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* @copyright 2016-2020 Daniil Gentili <daniil@daniil.it>
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* @license https://opensource.org/licenses/AGPL-3.0 AGPLv3
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*
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* @link https://docs.madelineproto.xyz MadelineProto documentation
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*/
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namespace danog\MadelineProto\Stream\MTProtoTransport;
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use Amp\Promise;
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use Amp\Socket\EncryptableSocket;
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use Amp\Success;
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use danog\MadelineProto\Stream\Async\BufferedStream;
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use danog\MadelineProto\Stream\BufferedProxyStreamInterface;
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use danog\MadelineProto\Stream\ConnectionContext;
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use danog\MadelineProto\Stream\MTProtoBufferInterface;
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use danog\MadelineProto\Stream\RawStreamInterface;
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use Psr\Http\Message\UriInterface;
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/**
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* HTTP stream wrapper.
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*
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* @author Daniil Gentili <daniil@daniil.it>
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*/
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class HttpStream implements MTProtoBufferInterface, BufferedProxyStreamInterface
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{
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use BufferedStream;
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private $stream;
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private $code;
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private $ctx;
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private $header = '';
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/**
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* URI of the HTTP API.
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*/
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private UriInterface $uri;
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/**
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* Connect to stream.
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*
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* @param ConnectionContext $ctx The connection context
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*
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* @return \Generator
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*/
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public function connect(ConnectionContext $ctx, string $header = ''): \Generator
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{
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$this->ctx = $ctx->getCtx();
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$this->stream = (yield from $ctx->getStream($header));
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$this->uri = $ctx->getUri();
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}
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/**
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* Set proxy data.
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*
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* @param array $extra Proxy parameters
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*
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* @return void
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*/
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public function setExtra($extra)
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{
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if (isset($extra['user']) && isset($extra['password'])) {
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$this->header = \base64_encode($extra['user'].':'.$extra['password'])."\r\n";
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}
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}
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/**
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* Async close.
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*
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* @return Promise
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*/
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public function disconnect()
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{
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return $this->stream->disconnect();
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}
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/**
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* Get write buffer asynchronously.
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*
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* @param int $length Length of data that is going to be written to the write buffer
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*
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* @return \Generator
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*/
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public function getWriteBufferGenerator(int $length, string $append = ''): \Generator
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{
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$headers = 'POST '.$this->uri->getPath()." HTTP/1.1\r\nHost: ".$this->uri->getHost().':'.$this->uri->getPort()."\r\n"."Content-Type: application/x-www-form-urlencoded\r\nConnection: keep-alive\r\nKeep-Alive: timeout=100000, max=10000000\r\nContent-Length: ".$length.$this->header."\r\n\r\n";
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$buffer = yield $this->stream->getWriteBuffer(\strlen($headers) + $length, $append);
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yield $buffer->bufferWrite($headers);
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return $buffer;
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}
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/**
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* Get read buffer asynchronously.
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*
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* @param int $length Length of payload, as detected by this layer
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*
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* @return \Generator
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*/
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public function getReadBufferGenerator(&$length): \Generator
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{
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$buffer = yield $this->stream->getReadBuffer($l);
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$headers = '';
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$was_crlf = false;
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while (true) {
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$piece = yield $buffer->bufferRead(2);
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$headers .= $piece;
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if ($piece === "\n\r") {
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// Assume end of headers with \r\n\r\n
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$headers .= yield $buffer->bufferRead(1);
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break;
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}
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if ($was_crlf && $piece === "\r\n") {
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break;
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}
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$was_crlf = $piece === "\r\n";
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}
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$headers = \explode("\r\n", $headers);
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list($protocol, $code, $description) = \explode(' ', $headers[0], 3);
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list($protocol, $protocol_version) = \explode('/', $protocol);
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if ($protocol !== 'HTTP') {
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throw new \danog\MadelineProto\Exception('Wrong protocol');
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}
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$code = (int) $code;
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unset($headers[0]);
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if (\array_pop($headers).\array_pop($headers) !== '') {
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throw new \danog\MadelineProto\Exception('Wrong last header');
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}
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foreach ($headers as $key => $current_header) {
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unset($headers[$key]);
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$current_header = \explode(':', $current_header, 2);
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$headers[\strtolower($current_header[0])] = \trim($current_header[1]);
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}
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$close = $protocol === 'HTTP/1.0';
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if (isset($headers['connection'])) {
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$close = \strtolower($headers['connection']) === 'close';
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}
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if ($code !== 200) {
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$read = '';
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if (isset($headers['content-length'])) {
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$read = yield $buffer->bufferRead((int) $headers['content-length']);
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}
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if ($close) {
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$this->disconnect();
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yield from $this->connect($this->ctx);
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}
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\danog\MadelineProto\Logger::log($read);
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$this->code = \danog\MadelineProto\Tools::packSignedInt(-$code);
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$length = 4;
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return $this;
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}
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if ($close) {
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$this->stream->disconnect();
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yield $this->stream->connect($this->ctx);
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}
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if (isset($headers['content-length'])) {
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$length = (int) $headers['content-length'];
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}
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return $buffer;
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}
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public function bufferRead(int $length): Promise
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{
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return new Success($this->code);
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}
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/**
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* {@inheritdoc}
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*
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* @return EncryptableSocket
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*/
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public function getSocket(): EncryptableSocket
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{
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return $this->stream->getSocket();
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}
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/**
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* {@inheritDoc}
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*
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* @return RawStreamInterface
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*/
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public function getStream(): RawStreamInterface
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{
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return $this->stream;
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}
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public static function getName(): string
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{
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return __CLASS__;
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}
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}
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