xref: /plugin/siteexport/inc/httpproxy.php (revision a8c17ab5b37308343f86651acb8c4a1b3f36f0ae) 
1<?php
2
3/**
4 * i-net software provides programming examples for illustration only,
5 * without warranty either expressed or implied, including, but not
6 * limited to, the implied warranties of merchantability and/or fitness
7 * for a particular purpose. This programming example assumes that you
8 * are familiar with the programming language being demonstrated and the
9 * tools used to create and debug procedures. i-net software support
10 * professionals can help explain the functionality of a particular
11 * procedure, but they will not modify these examples to provide added
12 * functionality or construct procedures to meet your specific needs.
13 * Copyright © i-net software 1998-2010
14 */
15
16/** ********************************************************************
17 * THIS FILE SHOULD NOT BE MODIFIED
18 ******************************************************************** */
19
20if (!defined('DOKU_INC')) die('meh');
21require_once(DOKU_INC . 'inc/HTTPClient.php');
22
23class HTTPProxy extends DokuHTTPClient {
24
25    public $debugClass = null;
26    public $settings = null;
27
28    /**
29     * Constructor.
30     * @param siteexport_functions $functions
31     */
32    public function __construct($functions) {
33        global $conf;
34
35        // The proxy should only be used if configured.
36        // Usually the proxy will allow connections away from the current server.
37        // This is what we do not want in most cases.
38        if ($functions->getConf('useProxy')) {
39            unset($conf['proxy']);
40        }
41
42        // call parent constructor
43        $this->debugClass = $functions->debug;
44        $this->settings = $functions->settings;
45        parent::__construct();
46
47        $this->timeout = 60; //max. 25 sec
48        $this->headers['If-Modified-Since'] = gmdate('r', 0);
49        $this->status = -1;
50        $this->debug = true;
51
52        if ($this->settings->cookie == null) {
53            $this->_debug("Has to re-authenticate request.");
54            if (!$this->authenticate()) {
55
56                $this->_debug("Trying other Authentication (auth.php):"); // Try again.
57                if (!(auth_setup() && $this->authenticate(true))) {
58                    $this->_debug("Trying other Authentication (config):", $functions->authenticate() && $this->authenticate(true) ? 'authenticated' : 'not authenticated'); // Try again.
59                } else {
60                    $this->_debug("Ok, using default auth.php"); // Try again.
61                }
62            }
63
64            $this->_debug("Using Authentication:", array('user' => $this->user, 'password' => '*****'));
65
66        } else {
67            $this->cookies = $this->settings->cookie;
68        }
69
70        $this->headers['X-Real-Ip'] = clientIP(true);
71        $this->headers['X-Site-Exporter'] = $functions->getSecurityToken();
72        $this->headers['Accept-Encoding'] = $_SERVER['HTTP_ACCEPT_ENCODING'];
73        $this->headers['Accept-Charset'] = $_SERVER['HTTP_ACCEPT_CHARSET'];
74        $this->agent = $_SERVER['HTTP_USER_AGENT'] . ' DokuWiki/SiteExport';
75    }
76
77    /**
78     * Authenticate using currently logged in user
79     */
80    private function authenticate($secondAttempt = false) {
81
82        global $auth, $INPUT;
83
84        // Ok, this is evil. We read the login information of the current user and forward it to the HTTPClient
85        list($this->user, $sticky, $this->pass) = auth_getCookie();
86
87        // Logged in in second attempt is now in Session.
88        if ($secondAttempt && !isset($this->user) && $INPUT->str('u') && $INPUT->str('p')) {
89
90            // We hacked directly into the login mechanism which provides the login information without encryption via $INPUT
91            $this->user = $INPUT->str('u');
92            $this->pass = $INPUT->str('p');
93        } else {
94            $secret = auth_cookiesalt(!$sticky, true); //bind non-sticky to session
95            $this->pass = !empty($this->pass) ? $this->auth_decrypt($this->pass, $secret) : '';
96        }
97
98        return isset($this->user);
99    }
100
101    /**
102     * Auth Decryption has changed from Weatherwax to Binky
103     */
104    private function auth_decrypt($pass, $secret) {
105
106        if (function_exists('auth_decrypt')) {
107            // Binky
108            return auth_decrypt($pass, $secret);
109        } else if (function_exists('PMA_blowfish_decrypt')) {
110            // Weatherwax
111            return PMA_blowfish_decrypt($pass, $secret);
112        } else {
113            $this->debugClass->runtimeException("No decryption method found");
114        }
115    }
116
117    /**
118     * Remeber HTTPClient Cookie after successfull authentication
119     */
120    public function sendRequest($url, $data = '', $method = 'GET') {
121
122        $returnCode = parent::sendRequest($url, $data, $method);
123        if ($this->settings->cookie == null) {
124            $this->settings->cookie = $this->cookies;
125        }
126
127        return $returnCode;
128    }
129
130     /**
131     * print debug info to file if exists
132     * @param string $info
133     */
134    public function _debug($info, $var = null) {
135
136        if (!$this->debugClass) {
137            return;
138        }
139
140        $this->debugClass->message("[HTTPClient] " . $info, $var, 1);
141    }
142}
143
144//Setup VIM: ex: et ts=4 enc=utf-8 :
145