xref: /plugin/siteexport/preload.php (revision d98cce67fe0e842937bedec2772b204f7feee514) 
1<?php
2if (!defined('DOKU_INC')) {
3    define('DOKU_INC', realpath(dirname(__FILE__) . '/../../../') . '/');
4}
5
6@include_once(DOKU_INC . 'inc/plugincontroller.class.php');
7
8class preload_plugin_siteexport {
9
10    public $error;
11
12    function __register_template() {
13
14        global $conf;
15        $tempREQUEST = array();
16
17        if (!empty($_REQUEST['q'])) {
18
19            require_once(DOKU_INC . 'inc/JSON.php');
20            $json = new JSON();
21            $tempREQUEST = (array) $json->dec(stripslashes($_REQUEST['q']));
22
23        } else if (array_key_exists('template', $_REQUEST)) {
24            $tempREQUEST = $_REQUEST;
25        } else if (preg_match("/(js|css)\.php$/", $_SERVER['SCRIPT_NAME']) && isset($_SERVER['HTTP_REFERER'])) {
26            // this is a css or script, nothing before matched and we have a referrer.
27            // lets asume we came from the dokuwiki page.
28
29            // Parse the Referrer URL
30            $url = parse_url($_SERVER['HTTP_REFERER']);
31            if (isset($url['query'])) {
32                parse_str($url['query'], $tempREQUEST);
33            }
34        } else {
35            return;
36        }
37
38        // define Template baseURL
39        $newTemplate = array_key_exists('template', $tempREQUEST) ? $tempREQUEST['template'] : null;
40        // Make sure, that the template is set and the basename is equal to the template, alas there are no path definitions. see #48
41        if (empty($newTemplate) || basename($newTemplate) != $newTemplate) { return; }
42        $tplDir = DOKU_INC . 'lib/tpl/' . $newTemplate;
43        // check if the directory is valid, has no more "../" in it and is equal to what we expect. DOKU_INC itself is absolute. see #48
44        if ($tplDir != realpath($tplDir)) { return; }
45
46        // Use fileexists, because realpath is not always right.
47        if (!file_exists($tplDir)) { return; }
48
49        // Set hint for Dokuwiki_Started event
50        if (!defined('SITEEXPORT_TPL'))        define('SITEEXPORT_TPL', $tempREQUEST['template']);
51
52        // define baseURL
53        // This should be DEPRECATED - as it is in init.php which suggest tpl_basedir and tpl_incdir
54        /* **************************************************************************************** */
55        if (!defined('DOKU_REL')) define('DOKU_REL', getBaseURL(false));
56        if (!defined('DOKU_URL')) define('DOKU_URL', getBaseURL(true));
57        if (!defined('DOKU_BASE')) {
58            if (isset($conf['canonical'])) {
59                define('DOKU_BASE', DOKU_URL);
60            } else {
61                define('DOKU_BASE', DOKU_REL);
62            }
63        }
64
65        // This should be DEPRECATED - as it is in init.php which suggest tpl_basedir and tpl_incdir
66        if (!defined('DOKU_TPL')) define('DOKU_TPL', (empty($tempREQUEST['base']) ? DOKU_BASE : $tempREQUEST['base']) . 'lib/tpl/' . $tempREQUEST['template'] . '/');
67        if (!defined('DOKU_TPLINC')) define('DOKU_TPLINC', $tplDir);
68        /* **************************************************************************************** */
69    }
70
71    function __temporary_disable_plugins() {
72
73        // Check for siteexport - otherwise this does not matter.
74        if (empty($_REQUEST['do']) || $_REQUEST['do'] != 'siteexport') {
75            return;
76        }
77
78        // check for css and js  ... only disable in that case.
79        if (!preg_match("/(js|css)\.php$/", $_SERVER['SCRIPT_NAME'])) {
80            return;
81        }
82
83        //        print "removing plugins ";
84        $_GET['purge'] = 'purge'; //activate purging
85        $_POST['purge'] = 'purge'; //activate purging
86        $_REQUEST['purge'] = 'purge'; //activate purging
87
88        $_SERVER['HTTP_HOST'] = 'siteexport.js'; // fake everything in here
89
90        // require_once(DOKU_INC.'inc/plugincontroller.class.php'); // Have to get the pluginutils already
91        // require_once(DOKU_INC.'inc/pluginutils.php'); // Have to get the pluginutils already
92        $this->__disablePlugins();
93    }
94
95    function __disablePlugins() {
96        global $plugin_controller_class;
97        $plugin_controller_class = 'preload_plugin_siteexport_controller';
98    }
99
100    function __create_preload_function() {
101
102        $PRELOADFILE = DOKU_INC . 'inc/preload.php';
103        $CURRENTFILE = 'DOKU_INC' . " . 'lib/plugins/siteexport/preload.php'";
104        $CONTENT = <<<OUTPUT
105/* SITE EXPORT *********************************************************** */
106    if ( file_exists($CURRENTFILE) ) {
107        include_once($CURRENTFILE);
108        \$siteexport_preload = new preload_plugin_siteexport();
109        \$siteexport_preload->__register_template();
110        \$siteexport_preload->__temporary_disable_plugins();
111        unset(\$siteexport_preload);
112    }
113/* SITE EXPORT END *********************************************************** */
114
115OUTPUT;
116
117        if (file_exists($PRELOADFILE)) {
118
119            if (!is_readable($PRELOADFILE)) {
120                $this->error = "Preload File locked. It exists, but it can't be read.";
121                msg($this->error, -1);
122                return false;
123            }
124
125            if (!is_writeable($PRELOADFILE)) {
126                $this->error = "Preload File locked. It exists and is readable, but it can't be written.";
127                msg($this->error, -1);
128                return false;
129            }
130
131            $fileContent = file($PRELOADFILE);
132            if (!strstr(implode("", $fileContent), $CONTENT)) {
133
134                $fp = fopen($PRELOADFILE, "a");
135                if (!strstr(implode("", $fileContent), "<?")) {
136                    fputs($fp, "<?php\n");
137                }
138                fputs($fp, "\n" . $CONTENT);
139                fclose($fp);
140            }
141
142            return true;
143
144        } else if (is_writeable(DOKU_INC . 'inc/')) {
145
146            $fp = fopen($PRELOADFILE, "w");
147            fputs($fp, "<?php\n/*\n * Dokuwiki Preload File\n * Auto-generated by Site Export plugin \n * Date: " . date('Y-m-d H:s:i') . "\n */\n");
148            fputs($fp, $CONTENT);
149            fputs($fp, "// end auto-generated content\n\n");
150            fclose($fp);
151
152            return true;
153        }
154
155        $this->error = "Could not create/modify preload.php. Please check the write permissions for your DokuWiki/inc directory.";
156        msg($this->error, -1);
157        return false;
158    }
159
160}
161
162// return a custom plugin list
163class preload_plugin_siteexport_controller extends Doku_Plugin_Controller {
164
165    /**
166     * Setup disabling
167     */
168    public function __construct() {
169        parent::__construct();
170
171        $disabledPlugins = array();
172
173        // support of old syntax
174        if (is_array($_REQUEST['diPlu'])) {
175            $disabledPlugins = $_REQUEST['diPlu'];
176        }
177
178        if (!empty($_REQUEST['diInv']))
179        {
180            $allPlugins = array();
181            foreach ($this->tmp_plugins as $plugin => $enabled) { // All plugins
182                // check for CSS or JS
183                if ($enabled == 1 && !file_exists(DOKU_PLUGIN . "$plugin/script.js") && !file_exists(DOKU_PLUGIN . "$plugin/style.css") && !file_exists(DOKU_PLUGIN . "$plugin/print.css")) { continue; }
184                $allPlugins[] = $plugin;
185            }
186            $disabledPlugins = empty($_REQUEST['diPlu']) ? $allPlugins : array_diff($allPlugins, $_REQUEST['diPlu']);
187        }
188
189        // if this is defined, it overrides the settings made above. obviously.
190        $disabledPlugins = empty($_REQUEST['disableplugin']) ? $disabledPlugins : $_REQUEST['disableplugin'];
191
192        foreach ($disabledPlugins as $plugin) {
193            $this->disable($plugin);
194        }
195
196        // always enabled - JS and CSS will be cut out later.
197        $this->enable('siteexport');
198    }
199
200    /**
201     * Disable the plugin
202     *
203     * @param string $plugin name of plugin
204     * @return bool; true allways.
205     */
206    public function disable($plugin) {
207        $this->tmp_plugins[$plugin] = 0;
208        return true;
209    }
210
211    /**
212     * Enable the plugin
213     *
214     * @param string $plugin name of plugin
215     * @return bool; true allways.
216     */
217    public function enable($plugin) {
218        $this->tmp_plugins[$plugin] = 1;
219        return true;
220    }
221
222    public function hasSiteexportHeaders() {
223        $headers = function_exists('getallheaders') ? getallheaders() : null;
224        return is_array($headers) && array_key_exists('X-Site-Exporter', $headers) /* && $headers['X-Site-Exporter'] = getSecurityToken() */;
225    }
226
227    /**
228     * Filter the List of Plugins for the siteexport plugin
229     */
230    private function isSiteexportPlugin($item) {
231        return $item != 'siteexport';
232    }
233
234    /**
235     * Get the list of plugins, bute remove Siteexport from Style and
236     * JS if in export Mode
237     */
238    public function getList($type = '', $all = false) {
239        $plugins = parent::getList($type, $all);
240
241        list(,, $caller) = debug_backtrace(false);
242        if ($this->hasSiteexportHeaders() && $caller != null && preg_match("/^(js|css)_/", $caller['function']) && preg_match("/(js|css)\.php$/", $caller['file'])) {
243            $plugins = array_filter($plugins, array($this, 'isSiteexportPlugin'));
244        }
245
246        return $plugins;
247    }
248}
249
250?>
251