1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
<?php /** @file */
function oembed_replacecb($matches){
$embedurl=$matches[1];
$j = oembed_fetch_url($embedurl);
$s = oembed_format_object($j);
return $s;
}
function oembed_fetch_url($embedurl){
$a = get_app();
$txt = Cache::get($a->videowidth . $embedurl);
if(strstr($txt,'youtu')) {
$txt = str_replace('http:','https:',$txt);
}
// These media files should now be caught in bbcode.php
// left here as a fallback in case this is called from another source
$noexts = array("mp3","mp4","ogg","ogv","oga","ogm","webm","opus");
$ext = pathinfo(strtolower($embedurl),PATHINFO_EXTENSION);
if(is_null($txt)){
$txt = "";
if (in_array($ext, $noexts)) {
require_once('include/hubloc.php');
$zrl = is_matrix_url($embedurl);
if($zrl)
$embedurl = zid($embedurl);
}
else {
// try oembed autodiscovery
$redirects = 0;
$result = z_fetch_url($embedurl, false, $redirects, array('timeout' => 15, 'accept_content' => "text/*", 'novalidate' => true ));
if($result['success'])
$html_text = $result['body'];
if($html_text){
$dom = @DOMDocument::loadHTML($html_text);
if ($dom){
$xpath = new DOMXPath($dom);
$attr = "oembed";
$xattr = oe_build_xpath("class","oembed");
$entries = $xpath->query("//link[@type='application/json+oembed']");
foreach($entries as $e){
$href = $e->getAttributeNode("href")->nodeValue;
$x = z_fetch_url($href . '&maxwidth=' . $a->videowidth);
$txt = $x['body'];
break;
}
// soundcloud is now using text/json+oembed instead of application/json+oembed,
// others may be also
$entries = $xpath->query("//link[@type='text/json+oembed']");
foreach($entries as $e){
$href = $e->getAttributeNode("href")->nodeValue;
$x = z_fetch_url($href . '&maxwidth=' . $a->videowidth);
$txt = $x['body'];
break;
}
}
}
}
if ($txt==false || $txt=="") {
$x = array('url' => $embedurl,'videowidth' => $a->videowidth);
call_hooks('oembed_probe',$x);
if(array_key_exists('embed',$x))
$txt = $x['embed'];
}
$txt=trim($txt);
if ($txt[0]!="{") $txt='{"type":"error"}';
//save in cache
Cache::set($a->videowidth . $embedurl,$txt);
}
$j = json_decode($txt);
$j->embedurl = $embedurl;
return $j;
}
function oembed_format_object($j){
$a = get_app();
$embedurl = $j->embedurl;
$jhtml = oembed_iframe($j->embedurl,(isset($j->width) ? $j->width : null), (isset($j->height) ? $j->height : null));
$ret="<span class='oembed ".$j->type."'>";
switch ($j->type) {
case "video": {
if (isset($j->thumbnail_url)) {
$tw = (isset($j->thumbnail_width)) ? $j->thumbnail_width:200;
$th = (isset($j->thumbnail_height)) ? $j->thumbnail_height:180;
$tr = $tw/$th;
$th=120; $tw = $th*$tr;
$tpl=get_markup_template('oembed_video.tpl');
if(strstr($embedurl,'youtu')) {
$embedurl = str_replace('http:','https:',$embedurl);
$j->thumbnail_url = str_replace('http:','https:', $j->thumbnail_url);
$jhtml = str_replace('http:','https:', $jhtml);
$j->html = str_replace('http:','https:', $j->html);
}
$ret.=replace_macros($tpl, array(
'$baseurl' => $a->get_baseurl(),
'$embedurl'=>$embedurl,
'$escapedhtml'=>base64_encode($jhtml),
'$tw'=>$tw,
'$th'=>$th,
'$turl'=>$j->thumbnail_url,
));
} else {
$ret=$jhtml;
}
$ret.="<br>";
}; break;
case "photo": {
$ret.= "<img width='".$j->width."' src='".$j->url."'>";
$ret.="<br>";
}; break;
case "link": {
//$ret = "<a href='".$embedurl."'>".$j->title."</a>";
}; break;
case "rich": {
// not so safe..
$ret.= $jhtml;
}; break;
}
// add link to source if not present in "rich" type
if ( $j->type!='rich' || !strpos($j->html,$embedurl) ){
$embedlink = (isset($j->title))?$j->title:$embedurl;
$ret .= "<a href='$embedurl' rel='oembed'>$embedlink</a>";
$ret .= "<br>";
if (isset($j->author_name)) $ret.=" by ".$j->author_name;
if (isset($j->provider_name)) $ret.=" on ".$j->provider_name;
} else {
// add <a> for html2bbcode conversion
$ret .= "<a href='$embedurl' rel='oembed'/>";
}
$ret.="<br style='clear:left'></span>";
return mb_convert_encoding($ret, 'HTML-ENTITIES', mb_detect_encoding($ret));
}
function oembed_iframe($src,$width,$height) {
if(! $width || strstr($width,'%'))
$width = '640';
if(! $height || strstr($height,'%'))
$height = '300';
// try and leave some room for the description line.
$height = intval($height) + 80;
$width = intval($width) + 40;
$s = z_root() . '/oembed/' . base64url_encode($src);
// Make sure any children are sandboxed within their own iframe.
return '<iframe height="' . $height . '" width="' . $width . '" src="' . $s . '" frameborder="no" >'
. t('Embedded content') . '</iframe>';
}
function oembed_bbcode2html($text){
$stopoembed = get_config("system","no_oembed");
if ($stopoembed == true){
return preg_replace("/\[embed\](.+?)\[\/embed\]/is", "<!-- oembed $1 --><i>". t('Embedding disabled') ." : $1</i><!-- /oembed $1 -->" ,$text);
}
return preg_replace_callback("/\[embed\](.+?)\[\/embed\]/is", 'oembed_replacecb' ,$text);
}
function oe_build_xpath($attr, $value){
// http://westhoffswelt.de/blog/0036_xpath_to_select_html_by_class.html
return "contains( normalize-space( @$attr ), ' $value ' ) or substring( normalize-space( @$attr ), 1, string-length( '$value' ) + 1 ) = '$value ' or substring( normalize-space( @$attr ), string-length( @$attr ) - string-length( '$value' ) ) = ' $value' or @$attr = '$value'";
}
function oe_get_inner_html( $node ) {
$innerHTML= '';
$children = $node->childNodes;
foreach ($children as $child) {
$innerHTML .= $child->ownerDocument->saveXML( $child );
}
return $innerHTML;
}
/**
* Find <span class='oembed'>..<a href='url' rel='oembed'>..</a></span>
* and replace it with [embed]url[/embed]
*/
function oembed_html2bbcode($text) {
// start parser only if 'oembed' is in text
if (strpos($text, "oembed")){
// convert non ascii chars to html entities
$html_text = mb_convert_encoding($text, 'HTML-ENTITIES', mb_detect_encoding($text));
// If it doesn't parse at all, just return the text.
$dom = @DOMDocument::loadHTML($html_text);
if(! $dom)
return $text;
$xpath = new DOMXPath($dom);
$attr = "oembed";
$xattr = oe_build_xpath("class","oembed");
$entries = $xpath->query("//span[$xattr]");
$xattr = "@rel='oembed'";//oe_build_xpath("rel","oembed");
foreach($entries as $e) {
$href = $xpath->evaluate("a[$xattr]/@href", $e)->item(0)->nodeValue;
if(!is_null($href)) $e->parentNode->replaceChild(new DOMText("[embed]".$href."[/embed]"), $e);
}
return oe_get_inner_html( $dom->getElementsByTagName("body")->item(0) );
} else {
return $text;
}
}
|
