xref: /plugin/combo/action/webcode.php (revision 4cadd4f8c541149bdda95f080e38a6d4e3a640ca) 
1<?php
2
3use ComboStrap\ExceptionCombo;
4use ComboStrap\PluginUtility;
5use ComboStrap\Site;
6use ComboStrap\TplUtility;
7
8if (!defined('DOKU_INC')) die();
9
10/**
11 *
12 */
13class  action_plugin_combo_webcode extends DokuWiki_Action_Plugin
14{
15
16    const CALL_ID = "webcode";
17    const MARKI_PARAM = "marki";
18
19
20    function register(Doku_Event_Handler $controller)
21    {
22        $controller->register_hook('AJAX_CALL_UNKNOWN', 'BEFORE', $this, '_ajax_call');
23    }
24
25    /**
26     * handle ajax requests
27     * @param $event Doku_Event
28     *
29     * {@link html_show()}
30     *
31     * https://www.dokuwiki.org/devel:plugin_programming_tips#handle_json_ajax_request
32     *
33     * CSRF checks are only for logged in users
34     * This is public ({@link getSecurityToken()}
35     */
36    function _ajax_call(&$event)
37    {
38
39        if ($event->data !== self::CALL_ID) {
40            return;
41        }
42        //no other ajax call handlers needed
43        $event->stopPropagation();
44        $event->preventDefault();
45
46
47        global $INPUT;
48        $marki = $INPUT->str(self::MARKI_PARAM);
49        $title = $INPUT->str('title') ?: "ComboStrap WebCode - Dokuwiki Renderer";
50
51
52        header('Content-Type: text/html; charset=utf-8');
53
54        /**
55         * Conf
56         */
57        PluginUtility::setConf(action_plugin_combo_css::CONF_DISABLE_DOKUWIKI_STYLESHEET, true);
58
59        /**
60         * Main content happens before the headers
61         * to set the headers right
62         */
63        global $conf;
64        $conf["renderer_xhtml"] = "xhtml";
65
66        global $ID;
67        $keep = $ID;
68        try {
69            $ID = "ajax_webcode_" . md5($marki);
70            $mainContent = p_render('xhtml', p_get_instructions($marki), $info);
71
72            /**
73             * Html
74             */
75            $htmlBeforeHeads = '<!DOCTYPE html>' . DOKU_LF;
76            $htmlBeforeHeads .= '<html>' . DOKU_LF;
77            $htmlBeforeHeads .= '<head>' . DOKU_LF;
78            $htmlBeforeHeads .= "  <title>$title</title>" . DOKU_LF;
79            // we echo because the tpl function just flush
80            echo $htmlBeforeHeads;
81
82            if (Site::isStrapTemplate()) {
83
84                /**
85                 * The strap header function
86                 */
87                try {
88                    Site::loadStrapUtilityTemplateIfPresentAndSameVersion();
89                    TplUtility::registerHeaderHandler();
90                } catch (ExceptionCombo $e) {
91                    \ComboStrap\LogUtility::log2file("Error while registering the header handler on webcode ajax call. Error: {$e->getMessage()}");
92                }
93
94            }
95
96            /**
97             * To delete the not needed headers for an export
98             * such as manifest, alternate, ...
99             */
100            global $EVENT_HANDLER;
101            $EVENT_HANDLER->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, '_delete_not_needed_headers');
102
103            /**
104             * meta headers
105             */
106            tpl_metaheaders();
107
108
109            $htmlAfterHeads = '</head>' . DOKU_LF;
110            $htmlAfterHeads .= '<body>' . DOKU_LF;
111            $htmlAfterHeads .= $mainContent . DOKU_LF;
112            $htmlAfterHeads .= '</body>' . DOKU_LF;
113            $htmlAfterHeads .= '</html>' . DOKU_LF;
114            echo $htmlAfterHeads;
115            http_response_code(200);
116
117        } finally {
118            $ID = $keep;
119        }
120
121    }
122
123    /**
124     * Dynamically called in the previous function
125     * to delete the head
126     * @param $event
127     */
128    public function _delete_not_needed_headers(&$event)
129    {
130        $data = &$event->data;
131
132        foreach ($data as $tag => &$heads) {
133            switch ($tag) {
134                case "link":
135                    $deletedRel = ["manifest", "search", "start", "alternate", "contents"];
136                    foreach ($heads as $id => $headAttributes) {
137                        if (isset($headAttributes['rel'])) {
138                            $rel = $headAttributes['rel'];
139                            if (in_array($rel, $deletedRel)) {
140                                unset($heads[$id]);
141                            }
142                        }
143                    }
144                    break;
145                case "meta":
146                    $deletedMeta = ["robots"];
147                    foreach ($heads as $id => $headAttributes) {
148                        if (isset($headAttributes['name'])) {
149                            $rel = $headAttributes['name'];
150                            if (in_array($rel, $deletedMeta)) {
151                                unset($heads[$id]);
152                            }
153                        }
154                    }
155                    break;
156                case "script":
157                    foreach ($heads as $id => $headAttributes) {
158                        if (isset($headAttributes['src'])) {
159                            $src = $headAttributes['src'];
160                            if (strpos($src, "lib/exe/js.php") !== false) {
161                                unset($heads[$id]);
162                            }
163                        }
164                    }
165            }
166        }
167    }
168
169
170}
171