xref: /plugin/siteexport/preload.php (revision aee41d15918470c2d7ac729fbc7320fd4bf49e4e) 
1<?php
2if (!defined('DOKU_INC')) define('DOKU_INC', realpath(dirname(__FILE__) . '/../../../') . '/');
3
4@include_once(DOKU_INC . 'inc/plugincontroller.class.php');
5
6class preload_plugin_siteexport {
7
8    var $error;
9
10    function __register_template() {
11
12        global $conf;
13        $tempREQUEST = array();
14
15        if ( !empty($_REQUEST['q']) ) {
16
17            require_once( DOKU_INC . 'inc/JSON.php');
18            $json = new JSON();
19            $tempREQUEST = (array)$json->dec(stripslashes($_REQUEST['q']));
20
21        } else if ( array_key_exists('template', $_REQUEST ) ) {
22            $tempREQUEST = $_REQUEST;
23        } else if ( preg_match("/(js|css)\.php$/", $_SERVER['SCRIPT_NAME']) && isset($_SERVER['HTTP_REFERER']) ) {
24            // this is a css or script, nothing before matched and we have a referrer.
25            // lets asume we came from the dokuwiki page.
26
27            // Parse the Referrer URL
28            $url = parse_url($_SERVER['HTTP_REFERER']);
29            if ( isset($url['query']) ) {
30                parse_str($url['query'], $tempREQUEST);
31            }
32        } else {
33            return;
34        }
35
36        // define Template baseURL
37        $newTemplate = array_key_exists('template', $tempREQUEST) ? $tempREQUEST['template'] : null;
38        // Make sure, that the template is set and the basename is equal to the template, alas there are no path definitions. see #48
39        if ( empty($newTemplate) || basename($newTemplate) != $newTemplate ) { return; }
40        $tplDir = DOKU_INC.'lib/tpl/'.$newTemplate;
41        // check if the directory is valid, has no more "../" in it and is equal to what we expect. DOKU_INC itself is absolute. see #48
42        if ( $tplDir != realpath($tplDir) ) { return; }
43
44        // Use fileexists, because realpath is not always right.
45        if ( !file_exists($tplDir) ) { return; }
46
47        // Set hint for Dokuwiki_Started event
48        if (!defined('SITEEXPORT_TPL'))		define('SITEEXPORT_TPL', $tempREQUEST['template']);
49
50        // define baseURL
51        // This should be DEPRECATED - as it is in init.php which suggest tpl_basedir and tpl_incdir
52        /* **************************************************************************************** */
53        if(!defined('DOKU_REL')) define('DOKU_REL',getBaseURL(false));
54        if(!defined('DOKU_URL')) define('DOKU_URL',getBaseURL(true));
55        if(!defined('DOKU_BASE')){
56            if( isset($conf['canonical']) ){
57                define('DOKU_BASE',DOKU_URL);
58            }else{
59                define('DOKU_BASE',DOKU_REL);
60            }
61        }
62
63        // This should be DEPRECATED - as it is in init.php which suggest tpl_basedir and tpl_incdir
64        if (!defined('DOKU_TPL'))			define('DOKU_TPL', (empty($tempREQUEST['base']) ? DOKU_BASE : $tempREQUEST['base']) . 'lib/tpl/'.$tempREQUEST['template'].'/');
65        if (!defined('DOKU_TPLINC'))		define('DOKU_TPLINC', $tplDir);
66        /* **************************************************************************************** */
67    }
68
69    function __temporary_disable_plugins() {
70
71        // Check for siteexport - otherwise this does not matter.
72        if ( empty($_REQUEST['do']) || $_REQUEST['do'] != 'siteexport' ) {
73            return;
74        }
75
76        // check for css and js  ... only disable in that case.
77        if ( !preg_match("/(js|css)\.php$/", $_SERVER['SCRIPT_NAME']) ) {
78            return;
79        }
80
81        //		print "removing plugins ";
82        $_GET['purge'] = 'purge'; //activate purging
83        $_POST['purge'] = 'purge'; //activate purging
84        $_REQUEST['purge'] = 'purge'; //activate purging
85
86        $_SERVER['HTTP_HOST'] = 'siteexport.js'; // fake everything in here
87
88        // require_once(DOKU_INC.'inc/plugincontroller.class.php'); // Have to get the pluginutils already
89        // require_once(DOKU_INC.'inc/pluginutils.php'); // Have to get the pluginutils already
90        $this->__disablePlugins();
91    }
92
93    function __disablePlugins() {
94        global $plugin_controller_class;
95        $plugin_controller_class = 'preload_plugin_siteexport_controller';
96    }
97
98    function __create_preload_function() {
99
100        $PRELOADFILE = DOKU_INC.'inc/preload.php';
101        $CURRENTFILE = 'DOKU_INC' . " . 'lib/plugins/siteexport/preload.php'";
102        $CONTENT = <<<OUTPUT
103/* SITE EXPORT *********************************************************** */
104	if ( file_exists($CURRENTFILE) ) {
105		include_once($CURRENTFILE);
106		\$siteexport_preload = new preload_plugin_siteexport();
107		\$siteexport_preload->__register_template();
108		\$siteexport_preload->__temporary_disable_plugins();
109		unset(\$siteexport_preload);
110	}
111/* SITE EXPORT END *********************************************************** */
112
113OUTPUT;
114
115        if ( file_exists($PRELOADFILE) ) {
116
117            if ( ! is_readable($PRELOADFILE) ) {
118                $this->error = "Preload File locked. It exists, but it can't be read.";
119                msg($this->error, -1);
120                return false;
121            }
122
123            if ( !is_writeable($PRELOADFILE) ) {
124                $this->error = "Preload File locked. It exists and is readable, but it can't be written.";
125                msg($this->error, -1);
126                return false;
127            }
128
129            $fileContent = file($PRELOADFILE);
130            if ( !strstr(implode("", $fileContent), $CONTENT) ) {
131
132                $fp = fopen($PRELOADFILE, "a");
133                if ( !strstr(implode("", $fileContent), "<?" )) {
134                    fputs($fp, "<?php\n");
135                }
136                fputs($fp, "\n".$CONTENT);
137                fclose($fp);
138            }
139
140            return true;
141
142        } else if ( is_writeable(DOKU_INC . 'inc/') ) {
143
144            $fp = fopen($PRELOADFILE,"w");
145            fputs($fp, "<?php\n/*\n * Dokuwiki Preload File\n * Auto-generated by Site Export plugin \n * Date: ".date('Y-m-d H:s:i')."\n */\n");
146            fputs($fp, $CONTENT);
147            fputs($fp, "// end auto-generated content\n\n");
148            fclose($fp);
149
150            return true;
151        }
152
153        $this->error = "Could not create/modify preload.php. Please check the write permissions for your DokuWiki/inc directory.";
154        msg($this->error, -1);
155        return false;
156    }
157
158}
159
160// return a custom plugin list
161class preload_plugin_siteexport_controller extends Doku_Plugin_Controller {
162
163    /**
164     * Setup disabling
165     */
166    public function __construct() {
167        parent::__construct();
168
169        $disabledPlugins = array();
170
171        // support of old syntax
172        if ( is_array($_REQUEST['diPlu']) ) {
173            $disabledPlugins = $_REQUEST['diPlu'];
174        }
175
176        if ( !empty($_REQUEST['diInv']) )
177        {
178            $allPlugins = array();
179            foreach($this->tmp_plugins as $plugin => $enabled) { // All plugins
180                // check for CSS or JS
181                if ( $enabled == 1 && !file_exists(DOKU_PLUGIN."$plugin/script.js") && !file_exists(DOKU_PLUGIN."$plugin/style.css") && !file_exists(DOKU_PLUGIN."$plugin/print.css") ) { continue; }
182                $allPlugins[] = $plugin;
183            }
184            $disabledPlugins = empty($_REQUEST['diPlu']) ? $allPlugins : array_diff($allPlugins, $_REQUEST['diPlu']);
185        }
186
187        // if this is defined, it overrides the settings made above. obviously.
188        $disabledPlugins = empty($_REQUEST['disableplugin']) ? $disabledPlugins : $_REQUEST['disableplugin'];
189
190        foreach( $disabledPlugins as $plugin ) {
191            $this->disable($plugin);
192        }
193
194        // always enabled - JS and CSS will be cut out later.
195        $this->enable('siteexport');
196    }
197
198    /**
199     * Disable the plugin
200     *
201     * @param string $plugin name of plugin
202     * @return bool; true allways.
203     */
204    public function disable($plugin) {
205        $this->tmp_plugins[$plugin] = 0;
206        return true;
207    }
208
209    /**
210     * Enable the plugin
211     *
212     * @param string $plugin name of plugin
213     * @return bool; true allways.
214     */
215    public function enable($plugin) {
216        $this->tmp_plugins[$plugin] = 1;
217        return true;
218    }
219
220    public function hasSiteexportHeaders() {
221        $headers = function_exists('getallheaders') ? getallheaders() : null;
222        return is_array($headers) && array_key_exists('X-Site-Exporter', $headers) && $headers['X-Site-Exporter'] = getSecurityToken();
223    }
224
225    /**
226     * Filter the List of Plugins for the siteexport plugin
227     */
228    private function isSiteexportPlugin ($item) {
229        return $item != 'siteexport';
230    }
231
232    /**
233     * Get the list of plugins, bute remove Siteexport from Style and
234     * JS if in export Mode
235     */
236    public function getList($type='',$all=false) {
237        $plugins = parent::getList($type, $all);
238
239        list(,, $caller) = debug_backtrace(false);
240        if ( $this->hasSiteexportHeaders() && $caller != null && preg_match("/^(js|css)_/", $caller['function']) && preg_match("/(js|css)\.php$/", $caller['file']) ) {
241            $plugins = array_filter($plugins, array($this, 'isSiteexportPlugin'));
242        }
243
244        return $plugins;
245    }
246}
247
248
249?>
250