272 lines
10 KiB
PHP
272 lines
10 KiB
PHP
<?php # $Id$
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@serendipity_plugin_api::load_language(dirname(__FILE__));
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if (!function_exists('html_entity_decode')) {
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function html_entity_decode($given_html, $quote_style = ENT_QUOTES) {
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$trans_table = get_html_translation_table(HTML_SPECIALCHARS, $quote_style);
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if ($trans_table["'"] != ''') { # some versions of PHP match single quotes to '
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$trans_table["'"] = ''';
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}
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return (strtr($given_html, array_flip($trans_table)));
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}
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}
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class serendipity_event_xhtmlcleanup extends serendipity_event
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{
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var $title = PLUGIN_EVENT_XHTMLCLEANUP_NAME;
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var $cleanup_tag, $cleanup_checkfor, $cleanup_val, $cleanup_parse;
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function introspect(&$propbag)
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{
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global $serendipity;
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$propbag->add('name', PLUGIN_EVENT_XHTMLCLEANUP_NAME);
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$propbag->add('description', PLUGIN_EVENT_XHTMLCLEANUP_DESC);
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$propbag->add('stackable', false);
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$propbag->add('author', 'Garvin Hicking');
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$propbag->add('version', '1.7');
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$propbag->add('requirements', array(
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'serendipity' => '0.8',
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'smarty' => '2.6.7',
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'php' => '4.1.0'
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));
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$propbag->add('groups', array('BACKEND_TEMPLATES'));
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$propbag->add('cachable_events', array('frontend_display' => true));
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$propbag->add('event_hooks', array(
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'frontend_display' => true,
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'frontend_display:html:per_entry' => true,
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'backend_view_comment' => true
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));
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$this->markup_elements = array(
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array(
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'name' => 'ENTRY_BODY',
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'element' => 'body',
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),
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array(
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'name' => 'EXTENDED_BODY',
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'element' => 'extended',
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),
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array(
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'name' => 'COMMENT',
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'element' => 'comment',
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),
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array(
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'name' => 'HTML_NUGGET',
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'element' => 'html_nugget',
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)
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);
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$conf_array = array();
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foreach($this->markup_elements as $element) {
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$conf_array[] = $element['name'];
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}
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$conf_array[] = 'xhtml_parse';
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$conf_array[] = 'utf8_parse';
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$conf_array[] = 'youtube';
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$propbag->add('configuration', $conf_array);
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}
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function install() {
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serendipity_plugin_api::hook_event('backend_cache_entries', $this->title);
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}
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function uninstall(&$propbag) {
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serendipity_plugin_api::hook_event('backend_cache_purge', $this->title);
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serendipity_plugin_api::hook_event('backend_cache_entries', $this->title);
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}
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function generate_content(&$title) {
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$title = $this->title;
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}
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function introspect_config_item($name, &$propbag)
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{
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if ($name == 'utf8_parse') {
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_XHTMLCLEANUP_UTF8);
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$propbag->add('description', PLUGIN_EVENT_XHTMLCLEANUP_UTF8_DESC);
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$propbag->add('default', 'true');
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} elseif ($name == 'xhtml_parse') {
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_XHTMLCLEANUP_XHTML);
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$propbag->add('description', PLUGIN_EVENT_XHTMLCLEANUP_XHTML_DESC);
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$propbag->add('default', 'true');
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} elseif ($name == 'youtube') {
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_XHTMLCLEANUP_YOUTUBE);
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$propbag->add('description', PLUGIN_EVENT_XHTMLCLEANUP_YOUTUBE_DESC);
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$propbag->add('default', 'false');
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} else {
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$propbag->add('type', 'boolean');
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$propbag->add('name', constant($name));
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$propbag->add('description', sprintf(APPLY_MARKUP_TO, constant($name)));
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$propbag->add('default', 'true');
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}
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return true;
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}
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function fixUTFEntity(&$string) {
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$string = preg_replace('/&#(x[a-f0-9]{1,4}|[0-9]{1,5});/', '&#$1;', $string);
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return true;
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}
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function event_hook($event, &$bag, &$eventData, $addData = null) {
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global $serendipity;
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static $convert_fields = array(
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'fullBody',
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'summary',
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'title',
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'author',
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);
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static $youtube = null;
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if ($youtube === null) {
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$youtube = serendipity_db_bool($this->get_config('youtube'));
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}
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$hooks = &$bag->get('event_hooks');
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if (isset($hooks[$event])) {
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switch($event) {
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case 'backend_view_comment':
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if (serendipity_db_bool($this->get_config('utf8_parse'))) {
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foreach($convert_fields AS $convert_field) {
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$this->fixUTFEntity($eventData[$convert_field]);
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}
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}
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return true;
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break;
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case 'frontend_display':
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$this->cleanup_parse = serendipity_db_bool($this->get_config('xhtml_parse'));
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foreach ($this->markup_elements as $temp) {
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if (serendipity_db_bool($this->get_config($temp['name'], true)) && isset($eventData[$temp['element']]) &&
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!$eventData['properties']['ep_disable_markup_' . $this->instance] &&
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!isset($serendipity['POST']['properties']['disable_markup_' . $this->instance])) {
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$element = $temp['element'];
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$this->cleanup_tag = 'IMG';
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$this->cleanup_checkfor = 'ALT';
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$this->cleanup_val = '';
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// Basic cleanup (core s9y functionality)
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$eventData[$element] = xhtml_cleanup($eventData[$element]);
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$eventData[$element] = preg_replace_callback('@(<img.+/?>)@imsU', array($this, 'clean_tag'), $eventData[$element]);
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$eventData[$element] = preg_replace_callback("@<(a|iframe|param)(.*)(href|src|value)=(\"|')([^\"']+)(\"|')@isUm", array($this, 'clean_htmlspecialchars'), $eventData[$element]);
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if ($youtube) {
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$this->youtubify($eventData[$element]);
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}
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}
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}
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if (serendipity_db_bool($this->get_config('utf8_parse'))) {
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$this->fixUTFEntity($eventData['author']);
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$this->fixUTFEntity($eventData['comment']);
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}
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return true;
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break;
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case 'frontend_display:html:per_entry':
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if (serendipity_db_bool($this->get_config('utf8_parse'))) {
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$this->fixUTFEntity($eventData['author']);
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$this->fixUTFEntity($eventData['title']);
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}
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return true;
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break;
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default:
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return false;
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}
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} else {
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return false;
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}
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}
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function youtubify(&$text) {
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$text = preg_replace_callback('@<object(.*)>(.*)</object>@imsU', array($this, 'youtubify_regex'), $text);
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}
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function youtubify_regex($matches) {
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if (!preg_match('@<embed@i', $matches[2])) return $matches[0];
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preg_match('@width=["\']?([0-9]+)@ims', $matches[1], $m);
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$width = $m[1];
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preg_match('@height=["\']?([0-9]+)@ims', $matches[1], $m);
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$height = $m[1];
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preg_match('@<param name="movie" value="(.+)"[\s/]*?>@imsU', $matches[2], $m);
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$movie = $m[1];
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if (empty($movie)) {
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preg_match('@<param value="(.+)" name="movie"[\s/]*?>@imsU', $matches[2], $m);
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$movie = $m[1];
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}
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$appendix = preg_replace('@<embed.*>@imsU', '', $matches[2]);
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$appendix = str_replace('</embed>', '', $appendix);
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$out = '<!-- xhtml clean youtube --><object type="application/x-shockwave-flash" width="' . $width . '" height="' . $height . '" data="' . $movie . '">'
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. '<param name="movie" value="' . $movie . '" />'
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. $appendix . '</object><!-- /xhtml clean youtube -->';
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$out .= "\n\n<!-- {$matches[0]} -->\n\n";
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return $out;
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}
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// Takes an input tag and search for ommitted attributes. Expects a single tag (array, index 0)
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function clean_tag($data) {
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// Restore tags from preg_replace_callback buffer, as those can't be passed in the function header
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$tag = &$this->cleanup_tag;
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$checkfor = &$this->cleanup_checkfor;
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$val = &$this->cleanup_val;
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// Instead of nasty regex-mangling we use the XML parser to get the attribute list of our input tag
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switch(strtolower(LANG_CHARSET)) {
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case 'iso-8859-1':
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case 'utf-8':
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$p = xml_parser_create(LANG_CHARSET);
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break;
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default:
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$p = xml_parser_create('');
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}
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@xml_parse_into_struct($p, $data[0], $vals, $index);
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xml_parser_free($p);
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// Check if the xml parser returned anything useful
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if (is_array($vals) && isset($vals[0]) && $vals[0]['tag'] == $tag) {
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if (!empty($vals[0]['attributes'][$checkfor])) {
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// The attribute we search for already exists. Return original string.
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return $data[0];
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}
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// Assign the value we submitted for the attribute to insert
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$vals[0]['attributes'][$checkfor] = $val;
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// Reconstruct XHTML tag.
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$atts = ' ';
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foreach($vals[0]['attributes'] AS $att => $att_con) {
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$atts .= strtolower($att) . '="' . ($this->cleanup_parse ? htmlspecialchars($att_con) : $att_con) . '" ';
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}
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return '<' . strtolower($tag) . $atts . ' />';
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}
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return $data[0];
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}
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function clean_htmlspecialchars($given, $quote_style = ENT_QUOTES) {
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return '<' . $given[1] . $given[2] . $given[3] . '=' . $given[4] . htmlspecialchars(html_entity_decode($given[5], $quote_style), $quote_style) . $given[6];
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}
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}
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/* vim: set sts=4 ts=4 expandtab : */
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