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add imdb dependencies
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xiaomlove
367
HTTP/Request2/SocketWrapper.php
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367
HTTP/Request2/SocketWrapper.php
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@@ -0,0 +1,367 @@
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<?php
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/**
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* Socket wrapper class used by Socket Adapter
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*
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* PHP version 5
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*
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* LICENSE
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*
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* This source file is subject to BSD 3-Clause License that is bundled
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* with this package in the file LICENSE and available at the URL
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* https://raw.github.com/pear/HTTP_Request2/trunk/docs/LICENSE
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @copyright 2008-2020 Alexey Borzov <avb@php.net>
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* @license http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
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* @link http://pear.php.net/package/HTTP_Request2
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*/
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/** Exception classes for HTTP_Request2 package */
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require_once 'HTTP/Request2/Exception.php';
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/**
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* Socket wrapper class used by Socket Adapter
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*
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* Needed to properly handle connection errors, global timeout support and
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* similar things. Loosely based on Net_Socket used by older HTTP_Request.
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @license http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
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* @version Release: 2.4.2
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* @link http://pear.php.net/package/HTTP_Request2
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* @link http://pear.php.net/bugs/bug.php?id=19332
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* @link http://tools.ietf.org/html/rfc1928
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*/
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class HTTP_Request2_SocketWrapper
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{
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/**
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* PHP warning messages raised during stream_socket_client() call
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* @var array
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*/
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protected $connectionWarnings = [];
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/**
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* Connected socket
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* @var resource
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*/
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protected $socket;
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/**
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* Sum of start time and global timeout, exception will be thrown if request continues past this time
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* @var float
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*/
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protected $deadline;
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/**
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* Global timeout value, mostly for exception messages
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* @var integer
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*/
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protected $timeout;
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/**
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* Class constructor, tries to establish connection
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*
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* @param string $address Address for stream_socket_client() call,
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* e.g. 'tcp://localhost:80'
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* @param int $timeout Connection timeout (seconds)
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* @param array $contextOptions Context options
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*
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* @throws HTTP_Request2_LogicException
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* @throws HTTP_Request2_ConnectionException
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*/
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public function __construct($address, $timeout, array $contextOptions = [])
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{
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if (!empty($contextOptions)
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&& !isset($contextOptions['socket']) && !isset($contextOptions['ssl'])
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) {
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// Backwards compatibility with 2.1.0 and 2.1.1 releases
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$contextOptions = ['ssl' => $contextOptions];
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}
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if (isset($contextOptions['ssl'])) {
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$contextOptions['ssl'] += [
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// Using "Intermediate compatibility" cipher bundle from
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// https://wiki.mozilla.org/Security/Server_Side_TLS
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'ciphers' => 'TLS_AES_128_GCM_SHA256:'
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. 'TLS_AES_256_GCM_SHA384:'
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. 'TLS_CHACHA20_POLY1305_SHA256:'
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. 'ECDHE-ECDSA-AES128-GCM-SHA256:'
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. 'ECDHE-RSA-AES128-GCM-SHA256:'
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. 'ECDHE-ECDSA-AES256-GCM-SHA384:'
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. 'ECDHE-RSA-AES256-GCM-SHA384:'
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. 'ECDHE-ECDSA-CHACHA20-POLY1305:'
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. 'ECDHE-RSA-CHACHA20-POLY1305:'
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. 'DHE-RSA-AES128-GCM-SHA256:'
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. 'DHE-RSA-AES256-GCM-SHA384',
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'disable_compression' => true,
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'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
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| STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
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];
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}
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$context = stream_context_create();
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foreach ($contextOptions as $wrapper => $options) {
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foreach ($options as $name => $value) {
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if (!stream_context_set_option($context, $wrapper, $name, $value)) {
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throw new HTTP_Request2_LogicException(
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"Error setting '{$wrapper}' wrapper context option '{$name}'"
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);
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}
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}
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}
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set_error_handler([$this, 'connectionWarningsHandler']);
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$this->socket = stream_socket_client(
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$address, $errno, $errstr, $timeout, STREAM_CLIENT_CONNECT, $context
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);
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restore_error_handler();
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// if we fail to bind to a specified local address (see request #19515),
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// connection still succeeds, albeit with a warning. Throw an Exception
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// with the warning text in this case as that connection is unlikely
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// to be what user wants and as Curl throws an error in similar case.
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if ($this->connectionWarnings) {
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if ($this->socket) {
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fclose($this->socket);
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}
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$error = $errstr ? $errstr : implode("\n", $this->connectionWarnings);
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throw new HTTP_Request2_ConnectionException(
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"Unable to connect to {$address}. Error: {$error}", 0, $errno
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);
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}
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// Run socket in non-blocking mode, to prevent possible problems with
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// HTTPS requests not timing out properly (see bug #21229)
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stream_set_blocking($this->socket, false);
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}
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/**
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* Destructor, disconnects socket
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*/
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public function __destruct()
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{
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fclose($this->socket);
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}
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/**
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* Wrapper around fread(), handles global request timeout
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*
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* @param int $length Reads up to this number of bytes
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*
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* @return string|false Data read from socket by fread()
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* @throws HTTP_Request2_MessageException In case of timeout
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*/
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public function read($length)
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{
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// Looks like stream_select() may return true, but then fread() will return an empty string...
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// For some reason or other happens mostly with servers behind Cloudflare.
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// Let's do the fread() call in a loop until either an error/eof or non-empty string:
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do {
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$data = false;
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$timeouts = $this->_getTimeoutsForStreamSelect();
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$r = [$this->socket];
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$w = [];
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$e = [];
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if (stream_select($r, $w, $e, $timeouts[0], $timeouts[1])) {
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$data = fread($this->socket, $length);
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}
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$this->checkTimeout();
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} while ('' === $data && !$this->eof());
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return $data;
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}
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/**
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* Reads until either the end of the socket or a newline, whichever comes first
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*
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* Strips the trailing newline from the returned data, handles global
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* request timeout. Method idea borrowed from Net_Socket PEAR package.
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*
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* @param int $bufferSize buffer size to use for reading
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* @param int $localTimeout timeout value to use just for this call
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* (used when waiting for "100 Continue" response)
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*
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* @return string Available data up to the newline (not including newline)
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* @throws HTTP_Request2_MessageException In case of timeout
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*/
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public function readLine($bufferSize, $localTimeout = null)
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{
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$line = '';
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while (!feof($this->socket)) {
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if (null !== $localTimeout) {
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$timeouts = [$localTimeout, 0];
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$started = microtime(true);
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} else {
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$timeouts = $this->_getTimeoutsForStreamSelect();
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}
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$r = [$this->socket];
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$w = [];
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$e = [];
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if (stream_select($r, $w, $e, $timeouts[0], $timeouts[1])) {
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$line .= @fgets($this->socket, $bufferSize);
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}
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if (null === $localTimeout) {
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$this->checkTimeout();
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} elseif (microtime(true) - $started > $localTimeout) {
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throw new HTTP_Request2_MessageException(
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"readLine() call timed out", HTTP_Request2_Exception::TIMEOUT
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);
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}
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if (substr($line, -1) == "\n") {
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return rtrim($line, "\r\n");
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}
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}
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return $line;
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}
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/**
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* Wrapper around fwrite(), handles global request timeout
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*
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* @param string $data String to be written
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*
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* @return int
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* @throws HTTP_Request2_MessageException
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*/
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public function write($data)
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{
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$totalWritten = 0;
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while (strlen($data)) {
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$written = 0;
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$timeouts = $this->_getTimeoutsForStreamSelect();
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$r = [];
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$w = [$this->socket];
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$e = [];
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if (stream_select($r, $w, $e, $timeouts[0], $timeouts[1])) {
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// Notice: fwrite(): send of #### bytes failed with errno=10035
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// A non-blocking socket operation could not be completed immediately.
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$written = @fwrite($this->socket, $data);
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}
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$this->checkTimeout();
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// http://www.php.net/manual/en/function.fwrite.php#96951
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if (0 === (int)$written) {
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throw new HTTP_Request2_MessageException('Error writing request');
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}
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$data = substr($data, $written);
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$totalWritten += $written;
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}
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return $totalWritten;
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}
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/**
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* Tests for end-of-file on a socket
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*
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* @return bool
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*/
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public function eof()
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{
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return feof($this->socket);
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}
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/**
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* Sets request deadline
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*
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* If null is passed for $deadline then deadline will be calculated based
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* on default_socket_timeout PHP setting. This is done to keep BC with previous
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* versions that used blocking sockets.
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*
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* @param float|null $deadline Exception will be thrown if request continues
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* past this time
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* @param int $timeout Original request timeout value, to use in
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* Exception message
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*/
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public function setDeadline($deadline, $timeout)
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{
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if (null === $deadline && 0 < ($defaultTimeout = (int)ini_get('default_socket_timeout'))) {
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$deadline = microtime(true) + $defaultTimeout;
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}
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$this->deadline = $deadline;
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$this->timeout = $timeout;
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}
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/**
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* Turns on encryption on a socket
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*
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* @throws HTTP_Request2_ConnectionException
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*/
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public function enableCrypto()
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{
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$cryptoMethod = STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
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| STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
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try {
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stream_set_blocking($this->socket, true);
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if (!stream_socket_enable_crypto($this->socket, true, $cryptoMethod)) {
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throw new HTTP_Request2_ConnectionException(
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'Failed to enable secure connection when connecting through proxy'
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);
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}
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} finally {
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stream_set_blocking($this->socket, false);
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}
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}
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/**
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* Throws an Exception if stream timed out
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*
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* @throws HTTP_Request2_MessageException
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*/
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protected function checkTimeout()
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{
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$info = stream_get_meta_data($this->socket);
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if ($info['timed_out'] || $this->deadline && microtime(true) > $this->deadline) {
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$reason = $this->timeout
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? "after {$this->timeout} second(s)"
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: 'due to default_socket_timeout php.ini setting';
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throw new HTTP_Request2_MessageException(
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"Request timed out {$reason}", HTTP_Request2_Exception::TIMEOUT
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);
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}
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}
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/**
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* Returns timeouts based on deadline for use with stream_select()
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*
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* @return array First element is $tv_sec parameter for stream_select(),
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* second element is $tv_usec
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*/
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private function _getTimeoutsForStreamSelect()
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{
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if (!$this->deadline) {
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return [null, null];
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}
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$parts = array_map(
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'intval',
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explode('.', sprintf('%.6F', $this->deadline - microtime(true)))
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);
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if (0 > $parts[0] || 0 === $parts[0] && $parts[1] < 50000) {
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return [0, 50000];
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}
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return $parts;
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}
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/**
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* Error handler to use during stream_socket_client() call
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*
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* One stream_socket_client() call may produce *multiple* PHP warnings
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* (especially OpenSSL-related), we keep them in an array to later use for
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* the message of HTTP_Request2_ConnectionException
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*
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* @param int $errno error level
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* @param string $errstr error message
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*
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* @return bool
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*/
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protected function connectionWarningsHandler($errno, $errstr)
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{
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if ($errno & E_WARNING) {
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array_unshift($this->connectionWarnings, $errstr);
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}
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return true;
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}
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}
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?>
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