mirror of
https://github.com/moodle/moodle.git
synced 2025-08-04 16:36:37 +02:00
443 lines
18 KiB
PHP
443 lines
18 KiB
PHP
<?php
|
|
|
|
// This file is part of Moodle - http://moodle.org/
|
|
//
|
|
// Moodle is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// Moodle is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
/**
|
|
* Media plugin filtering
|
|
*
|
|
* This filter will replace any links to a media file with
|
|
* a media plugin that plays that media inline
|
|
*
|
|
* @package filter
|
|
* @subpackage mediaplugin
|
|
* @copyright 2004 onwards Martin Dougiamas {@link http://moodle.com}
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
|
|
defined('MOODLE_INTERNAL') || die();
|
|
|
|
require_once($CFG->libdir.'/filelib.php');
|
|
|
|
class filter_mediaplugin extends moodle_text_filter {
|
|
private $eolas_fix_applied = false;
|
|
function filter($text) {
|
|
global $CFG, $PAGE;
|
|
// You should never modify parameters passed to a method or function, it's BAD practice. Create a copy instead.
|
|
// The reason is that you must always be able to refer to the original parameter that was passed.
|
|
// For this reason, I changed $text = preg_replace(..,..,$text) into $newtext = preg.... (NICOLAS CONNAULT)
|
|
// Thanks to Pablo Etcheverry for pointing this out! MDL-10177
|
|
|
|
// We're using the UFO technique for flash to attain XHTML Strict 1.0
|
|
// See: http://www.bobbyvandersluis.com/ufo/
|
|
if (!is_string($text)) {
|
|
// non string data can not be filtered anyway
|
|
return $text;
|
|
}
|
|
$newtext = $text; // fullclone is slow and not needed here
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_mp3)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.mp3)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_mp3_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_ogg)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.ogg)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_ogg_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_ogv)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.ogv)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_ogv_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_swf)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.swf)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_swf_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_flv)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.flv)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_flv_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_mov)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.mov)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_qt_callback', $newtext);
|
|
|
|
$search = '/<a[^>]*?href="([^<]+\.mp4)(\?d=([\d]{1,4}%?)x([\d]{1,4}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_qt_callback', $newtext);
|
|
|
|
$search = '/<a[^>]*?href="([^<]+\.m4v)(\?d=([\d]{1,4}%?)x([\d]{1,4}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_qt_callback', $newtext);
|
|
|
|
$search = '/<a[^>]*?href="([^<]+\.m4a)(\?d=([\d]{1,4}%?)x([\d]{1,4}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_qt_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_wmv)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.wmv)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_wmp_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_mpg)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.mpe?g)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_qt_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_avi)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.avi)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_wmp_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_ram)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.ram)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_real_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_rpm)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.rpm)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_real_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_rm)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.rm)"[^>]*>.*?<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_real_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_youtube)) {
|
|
//see MDL-23903 for description of recent changes to this regex
|
|
//$search = '/<a.*?href="([^<]*)youtube.com\/watch\?v=([^"]*)"[^>]*>(.*?)<\/a>/is';
|
|
$search = '/<a[^>]*href="([^<]*?)youtube.com\/watch\?v=([^"]*)"[^>]*>(.*?)<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_youtube_callback', $newtext);
|
|
|
|
$search = '/<a.*?href="([^<]*)youtube.com\/v\/([^"]*)"[^>]*>(.*?)<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_youtube_callback', $newtext);
|
|
}
|
|
|
|
if (!empty($CFG->filter_mediaplugin_enable_img)) {
|
|
$search = '/<a[^>]*?href="([^<]+\.jpg)"[^>]*>(.*?)<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_img_callback', $newtext);
|
|
$search = '/<a[^>]*?href="([^<]+\.png)"[^>]*>(.*?)<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_img_callback', $newtext);
|
|
$search = '/<a[^>]*?href="([^<]+\.gif)"[^>]*>(.*?)<\/a>/is';
|
|
$newtext = preg_replace_callback($search, 'filter_mediaplugin_img_callback', $newtext);
|
|
}
|
|
|
|
if (empty($newtext) or $newtext === $text) {
|
|
// error or not filtered
|
|
unset($newtext);
|
|
return $text;
|
|
}
|
|
|
|
if (!$this->eolas_fix_applied) {
|
|
$PAGE->requires->js('/filter/mediaplugin/eolas_fix.js');
|
|
$this->eolas_fix_applied = true;
|
|
}
|
|
|
|
return $newtext;
|
|
}
|
|
}
|
|
|
|
///===========================
|
|
/// callback filter functions
|
|
|
|
function filter_mediaplugin_mp3_callback($link) {
|
|
global $CFG, $OUTPUT, $PAGE;
|
|
|
|
$c = $OUTPUT->filter_mediaplugin_colors(); // You can set this up in your theme/xxx/config.php
|
|
|
|
static $count = 0;
|
|
$count++;
|
|
$id = 'filter_mp3_'.time().$count; //we need something unique because it might be stored in text cache
|
|
|
|
$url = addslashes_js($link[1]);
|
|
|
|
$playerpath = $CFG->wwwroot.'/filter/mediaplugin/mp3player.swf';
|
|
$audioplayerpath = $CFG->wwwroot .'/filter/mediaplugin/flowplayer.audio.swf';
|
|
$colors = explode('&', $c);
|
|
$playercolors = array();
|
|
foreach ($colors as $color) {
|
|
$color = explode('=', $color);
|
|
$playercolors[$color[0]] = $color[1];
|
|
}
|
|
|
|
$output = <<<OET
|
|
<span class="mediaplugin mediaplugin_mp3" id="$id"></span>
|
|
<noscript>
|
|
<object width="100" height="15" id="nonjsmp3plugin" name="undefined" data="$playerpath" type="application/x-shockwave-flash">
|
|
<param name="movie" value="$playerpath" />
|
|
<param name="allowfullscreen" value="false" />
|
|
<param name="allowscriptaccess" value="always" />
|
|
<param name="flashvars" value='config={"plugins": {"controls": {
|
|
"fullscreen": false,
|
|
"height": 15,
|
|
"autoHide": false,
|
|
"all": false,
|
|
"play": true,
|
|
"pause": true,
|
|
"scrubber": true
|
|
},
|
|
"audio": {"url": "$audioplayerpath"}
|
|
},
|
|
"clip":{"url":"$url",
|
|
"autoPlay": false},
|
|
"content":{"url":"$playerpath"}}}' />
|
|
</object>
|
|
</noscript>
|
|
OET;
|
|
|
|
$jsoutput = create_flowplayer($id, $url, 'mp3', $playercolors);
|
|
$output .= $jsoutput;
|
|
|
|
return $output;
|
|
}
|
|
|
|
function filter_mediaplugin_ogg_callback($link) {
|
|
global $CFG, $OUTPUT, $PAGE;
|
|
|
|
static $count = 0;
|
|
$count++;
|
|
$id = 'filter_ogg_'.time().$count; //we need something unique because it might be stored in text cache
|
|
|
|
$url = addslashes_js($link[1]);
|
|
$printlink = html_writer::link($url, get_string('oggaudio', 'filter_mediaplugin'));
|
|
$unsupportedplugins = get_string('unsupportedplugins', 'filter_mediaplugin', $printlink);
|
|
$output = <<<OET
|
|
<audio id="$id" src="$url" controls="true" width="100">
|
|
$unsupportedplugins
|
|
</audio>
|
|
OET;
|
|
|
|
return $output;
|
|
}
|
|
|
|
function filter_mediaplugin_ogv_callback($link) {
|
|
global $CFG, $OUTPUT, $PAGE;
|
|
|
|
static $count = 0;
|
|
$count++;
|
|
$id = 'filter_ogv_'.time().$count; //we need something unique because it might be stored in text cache
|
|
|
|
$url = addslashes_js($link[1]);
|
|
$printlink = html_writer::link($url, get_string('ogvvideo', 'filter_mediaplugin'));
|
|
$unsupportedplugins = get_string('unsupportedplugins', 'filter_mediaplugin', $printlink);
|
|
$output = <<<OET
|
|
<video id="$id" src="$url" controls="true" width="600" >
|
|
$unsupportedplugins
|
|
</video>
|
|
OET;
|
|
|
|
return $output;
|
|
}
|
|
|
|
function filter_mediaplugin_swf_callback($link) {
|
|
global $PAGE;
|
|
static $count = 0;
|
|
$count++;
|
|
$id = 'filter_swf_'.time().$count; //we need something unique because it might be stored in text cache
|
|
|
|
$width = empty($link[3]) ? '400' : $link[3];
|
|
$height = empty($link[4]) ? '300' : $link[4];
|
|
$url = addslashes_js($link[1]);
|
|
|
|
$args = Array();
|
|
$args['movie'] = $url;
|
|
$args['width'] = $width;
|
|
$args['height'] = $height;
|
|
$args['majorversion'] = 6;
|
|
$args['build'] = 40;
|
|
$args['allowscriptaccess'] = 'never';
|
|
$args['quality'] = 'high';
|
|
|
|
$jsoutput = create_ufo_inline($id, $args);
|
|
|
|
$output = $link[0].'<span class="mediaplugin mediaplugin_swf" id="'.$id.'">('.get_string('flashanimation', 'filter_mediaplugin').')</span>'.$jsoutput;
|
|
|
|
return $output;
|
|
}
|
|
|
|
function filter_mediaplugin_flv_callback($link) {
|
|
global $CFG, $PAGE;
|
|
|
|
static $count = 0;
|
|
$count++;
|
|
$id = 'filter_flv_'.time().$count; //we need something unique because it might be stored in text cache
|
|
|
|
$width = empty($link[3]) ? '480' : $link[3];
|
|
$height = empty($link[4]) ? '360' : $link[4];
|
|
$url = addslashes_js($link[1]);
|
|
|
|
$playerpath = $CFG->wwwroot.'/filter/mediaplugin/flvplayer.swf';
|
|
|
|
$output = <<<EOT
|
|
<span class="mediaplugin mediaplugin_flv" id="$id"></span>
|
|
<noscript>
|
|
<object width="800" height="600" id="undefined" name="undefined" data="$playerpath" type="application/x-shockwave-flash">
|
|
<param name="movie" value="$playerpath" />
|
|
<param name="allowfullscreen" value="true" />
|
|
<param name="allowscriptaccess" value="always" />
|
|
<param name="flashvars" value='config={"clip":{"url":"$url",
|
|
"autoPlay": false},
|
|
"content":{"url":"$playerpath"}}}' />
|
|
</object>
|
|
</noscript>
|
|
EOT;
|
|
|
|
$jsoutput = create_flowplayer($id, $url, 'flv');
|
|
$output .= $jsoutput;
|
|
return $output;
|
|
}
|
|
|
|
function filter_mediaplugin_real_callback($link, $autostart=false) {
|
|
$url = addslashes_js($link[1]);
|
|
$mimetype = mimeinfo('type', $url);
|
|
$autostart = $autostart ? 'true' : 'false';
|
|
|
|
// embed kept for now see MDL-8674
|
|
return $link[0].
|
|
'<span class="mediaplugin mediaplugin_real">
|
|
<script type="text/javascript">
|
|
//<![CDATA[
|
|
document.write(\'<object classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="240" height="180">\\
|
|
<param name="src" value="'.$url.'" />\\
|
|
<param name="autostart" value="'.$autostart.'" />\\
|
|
<param name="controls" value="imagewindow" />\\
|
|
<param name="console" value="video" />\\
|
|
<param name="loop" value="true" />\\
|
|
<embed src="'.$url.'" width="240" height="180" loop="true" type="'.$mimetype.'" controls="imagewindow" console="video" autostart="'.$autostart.'" />\\
|
|
</object><br />\\
|
|
<object classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="240" height="30">\\
|
|
<param name="src" value="'.$url.'" />\\
|
|
<param name="autostart" value="'.$autostart.'" />\\
|
|
<param name="controls" value="ControlPanel" />\\
|
|
<param name="console" value="video" />\\
|
|
<embed src="'.$url.'" width="240" height="30" controls="ControlPanel" type="'.$mimetype.'" console="video" autostart="'.$autostart.'" />\\
|
|
</object>\');
|
|
//]]>
|
|
</script></span>';
|
|
}
|
|
|
|
/**
|
|
* Change links to Youtube into embedded Youtube videos
|
|
*/
|
|
function filter_mediaplugin_youtube_callback($link, $autostart=false) {
|
|
|
|
$site = addslashes_js($link[1]);
|
|
$url = addslashes_js($link[2]);
|
|
$info = addslashes_js(strip_tags($link[3]));//strip out html tags as they won't work in the title attribute
|
|
|
|
return '<object title="'.$info.'"
|
|
class="mediaplugin mediaplugin_youtube" type="application/x-shockwave-flash"
|
|
data="'.$site.'youtube.com/v/'.$url.'&fs=1&rel=0" width="425" height="344">'.
|
|
'<param name="movie" value="'.$site.'youtube.com/v/'.$url.'&fs=1&rel=0" />'.
|
|
'<param name="FlashVars" value="playerMode=embedded" />'.
|
|
'<param name="wmode" value="transparent" />'.
|
|
'<param name="allowFullScreen" value="true" />'.
|
|
'</object>';
|
|
}
|
|
|
|
/**
|
|
* Change links to images into embedded images
|
|
*/
|
|
function filter_mediaplugin_img_callback($link, $autostart=false) {
|
|
$url = addslashes_js($link[1]);
|
|
$info = addslashes_js($link[2]);
|
|
|
|
return '<img class="mediaplugin mediaplugin_img" alt="" title="'.$info.'" src="'.$url.'" />';
|
|
}
|
|
|
|
/**
|
|
* Embed video using window media player if available
|
|
*/
|
|
function filter_mediaplugin_wmp_callback($link, $autostart=false) {
|
|
$url = $link[1];
|
|
if (empty($link[3]) or empty($link[4])) {
|
|
$mpsize = '';
|
|
$size = 'width="300" height="260"';
|
|
$autosize = 'true';
|
|
} else {
|
|
$size = 'width="'.$link[3].'" height="'.$link[4].'"';
|
|
$mpsize = $size;
|
|
$autosize = 'false';
|
|
}
|
|
$mimetype = mimeinfo('type', $url);
|
|
$autostart = $autostart ? 'true' : 'false';
|
|
|
|
return $link[0].
|
|
'<span class="mediaplugin mediaplugin_wmp">
|
|
<object classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" '.$mpsize.'
|
|
standby="Loading Microsoft(R) Windows(R) Media Player components..."
|
|
type="application/x-oleobject">
|
|
<param name="Filename" value="'.$url.'" />
|
|
<param name="src" value="'.$url.'" />
|
|
<param name="url" value="'.$url.'" />
|
|
<param name="ShowControls" value="true" />
|
|
<param name="AutoRewind" value="true" />
|
|
<param name="AutoStart" value="'.$autostart.'" />
|
|
<param name="Autosize" value="'.$autosize.'" />
|
|
<param name="EnableContextMenu" value="true" />
|
|
<param name="TransparentAtStart" value="false" />
|
|
<param name="AnimationAtStart" value="false" />
|
|
<param name="ShowGotoBar" value="false" />
|
|
<param name="EnableFullScreenControls" value="true" />
|
|
<!--[if !IE]>-->
|
|
<object data="'.$url.'" type="'.$mimetype.'" '.$size.'>
|
|
<param name="src" value="'.$url.'" />
|
|
<param name="controller" value="true" />
|
|
<param name="autoplay" value="'.$autostart.'" />
|
|
<param name="autostart" value="'.$autostart.'" />
|
|
<param name="resize" value="scale" />
|
|
</object>
|
|
<!--<![endif]-->
|
|
</object></span>';
|
|
}
|
|
|
|
function filter_mediaplugin_qt_callback($link, $autostart=false) {
|
|
$url = $link[1];
|
|
if (empty($link[3]) or empty($link[4])) {
|
|
$size = 'width="440" height="315"';
|
|
} else {
|
|
$size = 'width="'.$link[3].'" height="'.$link[4].'"';
|
|
}
|
|
$mimetype = mimeinfo('type', $url);
|
|
$autostart = $autostart ? 'true' : 'false';
|
|
|
|
return $link[0].
|
|
'<span class="mediaplugin mediaplugin_qt">
|
|
<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"
|
|
codebase="http://www.apple.com/qtactivex/qtplugin.cab" '.$size.'>
|
|
<param name="pluginspage" value="http://www.apple.com/quicktime/download/" />
|
|
<param name="src" value="'.$url.'" />
|
|
<param name="controller" value="true" />
|
|
<param name="loop" value="true" />
|
|
<param name="autoplay" value="'.$autostart.'" />
|
|
<param name="autostart" value="'.$autostart.'" />
|
|
<param name="scale" value="aspect" />
|
|
<!--[if !IE]>-->
|
|
<object data="'.$url.'" type="'.$mimetype.'" '.$size.'>
|
|
<param name="src" value="'.$url.'" />
|
|
<param name="pluginurl" value="http://www.apple.com/quicktime/download/" />
|
|
<param name="controller" value="true" />
|
|
<param name="loop" value="true" />
|
|
<param name="autoplay" value="'.$autostart.'" />
|
|
<param name="autostart" value="'.$autostart.'" />
|
|
<param name="scale" value="aspect" />
|
|
</object>
|
|
<!--<![endif]-->
|
|
</object></span>';
|
|
}
|
|
|
|
|