Moved proxy handling to a new class so that it can be reused in other parts of Composer
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Util;
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/**
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* Allows the creation of a basic context supporting http proxy
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*
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* @author Jordan Alliot <jordan.alliot@gmail.com>
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*/
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final class StreamContextFactory
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{
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private static $context;
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/**
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* Creates a context supporting HTTP proxies
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*
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* @return resource Default context
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* @throws \RuntimeException if https proxy required and OpenSSL uninstalled
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*/
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public static function getContext()
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{
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if (null !== self::$context) {
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return self::$context;
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}
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// Handle system proxy
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$params = array('http' => array());
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if (isset($_SERVER['HTTP_PROXY']) || isset($_SERVER['http_proxy'])) {
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// Some systems seem to rely on a lowercased version instead...
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$proxy = isset($_SERVER['HTTP_PROXY']) ? $_SERVER['HTTP_PROXY'] : $_SERVER['http_proxy'];
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// http(s):// is not supported in proxy
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$proxy = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxy);
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if (0 === strpos($proxy, 'ssl:') && !extension_loaded('openssl')) {
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throw new \RuntimeException('You must enable the openssl extension to use a proxy over https');
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}
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$params['http'] = array(
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'proxy' => $proxy,
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'request_fulluri' => true,
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);
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}
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return self::$context = stream_context_create($params);
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}
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}
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