<?php /** @file */ function oembed_replacecb($matches){ $embedurl=$matches[1]; // implements a personal embed white/black list for logged in members if(local_channel()) { if(($x = get_pconfig(local_channel(),'system','embed_deny'))) { $l = explode("\n",$x); if($l) { foreach($l as $ll) { if(trim($ll) && strpos($embedurl,trim($ll)) !== false) return '<a href="' . $embedurl . '">' . $embedurl . '</a>'; } } } if(($x = get_pconfig(local_channel(),'system','embed_allow'))) { $found = false; $l = explode("\n",$x); if($l) { foreach($l as $ll) { if(trim($ll) && strpos($embedurl,trim($ll)) !== false) { $found = true; break; } } } if(! $found) { return '<a href="' . $embedurl . '">' . $embedurl . '</a>'; } } } $j = oembed_fetch_url($embedurl); $s = oembed_format_object($j); return $s; } // if the url is embeddable with oembed, return the bbcode link. function oembed_process($url) { $j = oembed_fetch_url($url); logger('oembed_process: ' . print_r($j,true)); if($j && $j->type !== 'error') return '[embed]' . $url . '[/embed]'; return false; } function oembed_fetch_url($embedurl){ $a = get_app(); $txt = Cache::get($a->videowidth . $embedurl); if(strstr($txt,'youtu') && strstr(z_root(),'https:')) { $txt = str_replace('http:','https:',$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') && strstr(z_root(),'https:')) { $embedurl = str_replace('http:','https:',$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; $ret .= '<span class="bookmark-identifier">#^</span>' . "<a href='$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; } }