mirror of
https://github.com/friendica/friendica
synced 2024-12-29 15:22:18 +00:00
317 lines
9 KiB
PHP
Executable file
317 lines
9 KiB
PHP
Executable file
<?php
|
|
|
|
/**
|
|
* @file include/oembed.php
|
|
*/
|
|
|
|
use Friendica\App;
|
|
use Friendica\Core\Cache;
|
|
use Friendica\Core\System;
|
|
use Friendica\ParseUrl;
|
|
use Friendica\Core\Config;
|
|
use Friendica\Database\DBM;
|
|
|
|
function oembed_replacecb($matches){
|
|
$embedurl=$matches[1];
|
|
$j = oembed_fetch_url($embedurl);
|
|
$s = oembed_format_object($j);
|
|
|
|
return $s;
|
|
}
|
|
|
|
/**
|
|
* @brief Get data from an URL to embed its content.
|
|
*
|
|
* @param string $embedurl The URL from which the data should be fetched.
|
|
* @param bool $no_rich_type If set to true rich type content won't be fetched.
|
|
*
|
|
* @return bool|object Returns object with embed content or false if no embedable
|
|
* content exists
|
|
*/
|
|
function oembed_fetch_url($embedurl, $no_rich_type = false){
|
|
$embedurl = trim($embedurl, "'");
|
|
$embedurl = trim($embedurl, '"');
|
|
|
|
$a = get_app();
|
|
|
|
$r = q("SELECT * FROM `oembed` WHERE `url` = '%s'",
|
|
dbesc(normalise_link($embedurl)));
|
|
|
|
if (DBM::is_result($r)) {
|
|
$txt = $r[0]["content"];
|
|
} else {
|
|
$txt = Cache::get($a->videowidth . $embedurl);
|
|
}
|
|
// 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");
|
|
$ext = pathinfo(strtolower($embedurl), PATHINFO_EXTENSION);
|
|
|
|
|
|
if (is_null($txt)) {
|
|
$txt = "";
|
|
|
|
if (!in_array($ext, $noexts)){
|
|
// try oembed autodiscovery
|
|
$redirects = 0;
|
|
$html_text = fetch_url($embedurl, false, $redirects, 15, "text/*");
|
|
if ($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;
|
|
$txt = fetch_url($href . '&maxwidth=' . $a->videowidth);
|
|
break;
|
|
}
|
|
$entries = $xpath->query("//link[@type='text/json+oembed']");
|
|
foreach ($entries as $e) {
|
|
$href = $e->getAttributeNode("href")->nodeValue;
|
|
$txt = fetch_url($href . '&maxwidth=' . $a->videowidth);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$txt = trim($txt);
|
|
|
|
if ($txt[0] != "{") {
|
|
$txt = '{"type":"error"}';
|
|
} else { //save in cache
|
|
$j = json_decode($txt);
|
|
if ($j->type != "error") {
|
|
dba::insert('oembed', array('url' => normalise_link($embedurl),
|
|
'content' => $txt, 'created' => datetime_convert()), true);
|
|
}
|
|
|
|
Cache::set($a->videowidth.$embedurl, $txt, CACHE_DAY);
|
|
}
|
|
}
|
|
|
|
$j = json_decode($txt);
|
|
|
|
if (!is_object($j)) {
|
|
return false;
|
|
}
|
|
|
|
// Always embed the SSL version
|
|
if (isset($j->html)) {
|
|
$j->html = str_replace(array("http://www.youtube.com/", "http://player.vimeo.com/"),
|
|
array("https://www.youtube.com/", "https://player.vimeo.com/"), $j->html);
|
|
}
|
|
|
|
$j->embedurl = $embedurl;
|
|
|
|
// If fetching information doesn't work, then improve via internal functions
|
|
if (($j->type == "error") || ($no_rich_type && ($j->type == "rich"))) {
|
|
$data = ParseUrl::getSiteinfoCached($embedurl, true, false);
|
|
$j->type = $data["type"];
|
|
|
|
if ($j->type == "photo") {
|
|
$j->url = $data["url"];
|
|
//$j->width = $data["images"][0]["width"];
|
|
//$j->height = $data["images"][0]["height"];
|
|
}
|
|
|
|
if (isset($data["title"])) {
|
|
$j->title = $data["title"];
|
|
}
|
|
|
|
if (isset($data["text"])) {
|
|
$j->description = $data["text"];
|
|
}
|
|
|
|
if (is_array($data["images"])) {
|
|
$j->thumbnail_url = $data["images"][0]["src"];
|
|
$j->thumbnail_width = $data["images"][0]["width"];
|
|
$j->thumbnail_height = $data["images"][0]["height"];
|
|
}
|
|
}
|
|
|
|
call_hooks('oembed_fetch_url', $embedurl, $j);
|
|
|
|
return $j;
|
|
}
|
|
|
|
function oembed_format_object($j){
|
|
require_once("mod/proxy.php");
|
|
|
|
$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) && intval($j->thumbnail_width)) ? $j->thumbnail_width:200;
|
|
$th = (isset($j->thumbnail_height) && intval($j->thumbnail_height)) ? $j->thumbnail_height:180;
|
|
// make sure we don't attempt divide by zero, fallback is a 1:1 ratio
|
|
$tr = (($th) ? $tw/$th : 1);
|
|
|
|
$th=120; $tw = $th*$tr;
|
|
$tpl=get_markup_template('oembed_video.tpl');
|
|
$ret.=replace_macros($tpl, array(
|
|
'$baseurl' => System::baseUrl(),
|
|
'$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='".proxy_url($j->url)."'>";
|
|
break;
|
|
case "link":
|
|
break;
|
|
case "rich":
|
|
// not so safe..
|
|
if (!Config::get("system","no_oembed_rich_content")) {
|
|
$ret.= proxy_parse_html($jhtml);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// add link to source if not present in "rich" type
|
|
if ($j->type!='rich' || !strpos($j->html,$embedurl) ){
|
|
$ret .= "<h4>";
|
|
if (isset($j->title)) {
|
|
if (isset($j->provider_name)) {
|
|
$ret .= $j->provider_name.": ";
|
|
}
|
|
|
|
$embedlink = (isset($j->title))?$j->title:$embedurl;
|
|
$ret .= "<a href='$embedurl' rel='oembed'>$embedlink</a>";
|
|
if (isset($j->author_name)) {
|
|
$ret.=" (".$j->author_name.")";
|
|
}
|
|
} elseif (isset($j->provider_name) || isset($j->author_name)) {
|
|
$embedlink = "";
|
|
if (isset($j->provider_name)) {
|
|
$embedlink .= $j->provider_name;
|
|
}
|
|
|
|
if (isset($j->author_name)) {
|
|
if ($embedlink != "") {
|
|
$embedlink .= ": ";
|
|
}
|
|
|
|
$embedlink .= $j->author_name;
|
|
}
|
|
if (trim($embedlink) == "") {
|
|
$embedlink = $embedurl;
|
|
}
|
|
|
|
$ret .= "<a href='$embedurl' rel='oembed'>$embedlink</a>";
|
|
}
|
|
//if (isset($j->author_name)) $ret.=" by ".$j->author_name;
|
|
//if (isset($j->provider_name)) $ret.=" on ".$j->provider_name;
|
|
$ret .= "</h4>";
|
|
} else {
|
|
// add <a> for html2bbcode conversion
|
|
$ret .= "<a href='$embedurl' rel='oembed'>$embedurl</a>";
|
|
}
|
|
$ret.="</span>";
|
|
$ret = str_replace("\n","",$ret);
|
|
return mb_convert_encoding($ret, 'HTML-ENTITIES', mb_detect_encoding($ret));
|
|
}
|
|
|
|
/**
|
|
* @brief Generates the iframe HTML for an oembed attachment.
|
|
*
|
|
* Width and height are given by the remote, and are regularly too small for
|
|
* the generated iframe.
|
|
*
|
|
* The width is entirely discarded for the actual width of the post, while fixed
|
|
* height is used as a starting point before the inevitable resizing.
|
|
*
|
|
* Since the iframe is automatically resized on load, there are no need for ugly
|
|
* and impractical scrollbars.
|
|
*
|
|
* @param string $src Original remote URL to embed
|
|
* @param string $width
|
|
* @param string $height
|
|
* @return string formatted HTML
|
|
*
|
|
* @see oembed_format_object()
|
|
*/
|
|
function oembed_iframe($src, $width, $height) {
|
|
$a = get_app();
|
|
|
|
if (!$height || strstr($height,'%')) {
|
|
$height = '200';
|
|
}
|
|
$width = '100%';
|
|
|
|
$s = System::baseUrl() . '/oembed/' . base64url_encode($src);
|
|
return '<iframe onload="resizeIframe(this);" class="embed_rich" height="' . $height . '" width="' . $width . '" src="' . $s . '" allowfullscreen scrolling="no" frameborder="no">' . t('Embedded content') . '</iframe>';
|
|
}
|
|
|
|
|
|
|
|
function oembed_bbcode2html($text){
|
|
$stopoembed = Config::get("system","no_oembed");
|
|
if ($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;
|
|
}
|
|
}
|