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  • Committer: Barry Price
  • Date: 2016-08-17 04:49:28 UTC
  • mto: This revision was merged to the branch mainline in revision 22.
  • Revision ID: barry.price@canonical.com-20160817044928-viijiwb4tl8jwzmp
new upstream release 4.6

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<?php
 
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/**
 
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 * HTTP Proxy connection interface
 
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 *
 
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 * @package Requests
 
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 * @subpackage Proxy
 
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 * @since 1.6
 
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 */
 
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/**
 
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 * HTTP Proxy connection interface
 
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 *
 
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 * Provides a handler for connection via an HTTP proxy
 
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 *
 
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 * @package Requests
 
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 * @subpackage Proxy
 
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 * @since 1.6
 
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 */
 
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class Requests_Proxy_HTTP implements Requests_Proxy {
 
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        /**
 
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         * Proxy host and port
 
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         *
 
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         * Notation: "host:port" (eg 127.0.0.1:8080 or someproxy.com:3128)
 
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         *
 
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         * @var string
 
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         */
 
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        public $proxy;
 
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        /**
 
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         * Username
 
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         *
 
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         * @var string
 
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         */
 
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        public $user;
 
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        /**
 
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         * Password
 
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         *
 
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         * @var string
 
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         */
 
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        public $pass;
 
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        /**
 
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         * Do we need to authenticate? (ie username & password have been provided)
 
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         *
 
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         * @var boolean
 
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         */
 
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        public $use_authentication;
 
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        /**
 
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         * Constructor
 
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         *
 
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         * @since 1.6
 
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         * @throws Requests_Exception On incorrect number of arguments (`authbasicbadargs`)
 
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         * @param array|null $args Array of user and password. Must have exactly two elements
 
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         */
 
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        public function __construct($args = null) {
 
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                if (is_string($args)) {
 
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                        $this->proxy = $args;
 
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                }
 
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                elseif (is_array($args)) {
 
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                        if (count($args) == 1) {
 
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                                list($this->proxy) = $args;
 
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                        }
 
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                        elseif (count($args) == 3) {
 
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                                list($this->proxy, $this->user, $this->pass) = $args;
 
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                                $this->use_authentication = true;
 
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                        }
 
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                        else {
 
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                                throw new Requests_Exception('Invalid number of arguments', 'proxyhttpbadargs');
 
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                        }
 
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                }
 
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        }
 
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        /**
 
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         * Register the necessary callbacks
 
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         *
 
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         * @since 1.6
 
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         * @see curl_before_send
 
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         * @see fsockopen_remote_socket
 
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         * @see fsockopen_remote_host_path
 
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         * @see fsockopen_header
 
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         * @param Requests_Hooks $hooks Hook system
 
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         */
 
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        public function register(Requests_Hooks &$hooks) {
 
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                $hooks->register('curl.before_send', array(&$this, 'curl_before_send'));
 
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                $hooks->register('fsockopen.remote_socket', array(&$this, 'fsockopen_remote_socket'));
 
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                $hooks->register('fsockopen.remote_host_path', array(&$this, 'fsockopen_remote_host_path'));
 
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                if ($this->use_authentication) {
 
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                        $hooks->register('fsockopen.after_headers', array(&$this, 'fsockopen_header'));
 
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                }
 
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        }
 
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        /**
 
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         * Set cURL parameters before the data is sent
 
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         *
 
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         * @since 1.6
 
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         * @param resource $handle cURL resource
 
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         */
 
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        public function curl_before_send(&$handle) {
 
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                curl_setopt($handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
 
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                curl_setopt($handle, CURLOPT_PROXY, $this->proxy);
 
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                if ($this->use_authentication) {
 
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                        curl_setopt($handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
 
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                        curl_setopt($handle, CURLOPT_PROXYUSERPWD, $this->get_auth_string());
 
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                }
 
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        }
 
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        /**
 
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         * Alter remote socket information before opening socket connection
 
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         *
 
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         * @since 1.6
 
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         * @param string $remote_socket Socket connection string
 
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         */
 
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        public function fsockopen_remote_socket(&$remote_socket) {
 
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                $remote_socket = $this->proxy;
 
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        }
 
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        /**
 
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         * Alter remote path before getting stream data
 
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         *
 
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         * @since 1.6
 
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         * @param string $path Path to send in HTTP request string ("GET ...")
 
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         * @param string $url Full URL we're requesting
 
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         */
 
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        public function fsockopen_remote_host_path(&$path, $url) {
 
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                $path = $url;
 
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        }
 
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        /**
 
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         * Add extra headers to the request before sending
 
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         *
 
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         * @since 1.6
 
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         * @param string $out HTTP header string
 
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         */
 
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        public function fsockopen_header(&$out) {
 
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                $out .= sprintf("Proxy-Authorization: Basic %s\r\n", base64_encode($this->get_auth_string()));
 
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        }
 
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        /**
 
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         * Get the authentication string (user:pass)
 
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         *
 
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         * @since 1.6
 
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         * @return string
 
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         */
 
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        public function get_auth_string() {
 
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                return $this->user . ':' . $this->pass;
 
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        }
 
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}
 
 
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