more flexible oEmbed handling
This commit is contained in:
Evan Prodromou
parent
17c8df76f1
commit
4b5f76d688
16
README
16
README
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@ -1393,12 +1393,22 @@ desclimit: maximum number of characters to allow in group descriptions.
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null (default) means to use the site-wide text limits. 0
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means no limit.
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oohembed
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oembed
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--------
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oEmbed endpoint for multimedia attachments (links in posts).
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oEmbed endpoint for multimedia attachments (links in posts). Will also
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work as 'oohembed' for backwards compatibility.
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endpoint: oohembed endpoint using http://oohembed.com/ software.
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endpoint: oohembed endpoint using http://oohembed.com/ software. Defaults to
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'http://oohembed.com/oohembed/'.
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order: Array of methods to check for OEmbed data. Methods include 'built-in'
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(use a built-in function to simulate oEmbed for some sites),
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'well-known' (use well-known public oEmbed endpoints),
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'discovery' (discover using <link> headers in HTML), 'service' (use
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a third-party service, like oohembed or embed.ly. Default is
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array('built-in', 'well-known', 'service', 'discovery'). Note that very
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few sites implement oEmbed; 'discovery' is going to fail 99% of the
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time.
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search
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------
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@ -269,7 +269,10 @@ $default =
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'group' =>
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array('maxaliases' => 3,
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'desclimit' => null),
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'oohembed' => array('endpoint' => 'http://oohembed.com/oohembed/'),
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'oembed' =>
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array('endpoint' => 'http://oohembed.com/oohembed/',
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'order' => array('built-in', 'well-known', 'service', 'discovery'),
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),
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'search' =>
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array('type' => 'fulltext'),
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'sessions' =>
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@ -43,6 +43,13 @@ class oEmbedHelper
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protected static $apiMap = array(
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'flickr.com' => 'http://www.flickr.com/services/oembed/',
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'yfrog.com' => 'http://www.yfrog.com/api/oembed',
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'youtube.com' => 'http://www.youtube.com/oembed',
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'viddler.com' => 'http://lab.viddler.com/services/oembed/',
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'qik.com' => 'http://qik.com/api/oembed.json',
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'revision3.com' => 'http://revision3.com/api/oembed/',
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'hulu.com' => 'http://www.hulu.com/api/oembed.json',
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'vimeo.com' => 'http://www.vimeo.com/api/oembed.json',
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'my.opera.com' => 'http://my.opera.com/service/oembed',
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);
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protected static $functionMap = array(
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'twitpic.com' => 'oEmbedHelper::twitPic',
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@ -74,30 +81,59 @@ class oEmbedHelper
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$host = substr($host, 4);
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}
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// Blacklist: systems with no oEmbed API of their own, which are
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// either missing from or broken on oohembed.com's proxy.
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// we know how to look data up in another way...
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if (array_key_exists($host, self::$functionMap)) {
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$func = self::$functionMap[$host];
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return call_user_func($func, $url, $params);
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}
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common_log(LOG_INFO, 'Checking for oEmbed data for ' . $url);
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// Whitelist: known API endpoints for sites that don't provide discovery...
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if (array_key_exists($host, self::$apiMap)) {
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$api = self::$apiMap[$host];
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} else {
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try {
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$api = self::discover($url);
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} catch (Exception $e) {
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// Discovery failed... fall back to oohembed if enabled.
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$oohembed = common_config('oohembed', 'endpoint');
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if ($oohembed) {
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$api = $oohembed;
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} else {
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throw $e;
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// You can fiddle with the order of discovery -- either skipping
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// some types or re-ordering them.
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$order = common_config('oembed', 'order');
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foreach ($order as $method) {
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switch ($method) {
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case 'built-in':
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common_log(LOG_INFO, 'Considering built-in oEmbed methods...');
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// Blacklist: systems with no oEmbed API of their own, which are
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// either missing from or broken on oohembed.com's proxy.
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// we know how to look data up in another way...
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if (array_key_exists($host, self::$functionMap)) {
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common_log(LOG_INFO, 'We have a built-in method for ' . $host);
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$func = self::$functionMap[$host];
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return call_user_func($func, $url, $params);
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}
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break;
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case 'well-known':
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common_log(LOG_INFO, 'Considering well-known oEmbed endpoints...');
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// Whitelist: known API endpoints for sites that don't provide discovery...
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if (array_key_exists($host, self::$apiMap)) {
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$api = self::$apiMap[$host];
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common_log(LOG_INFO, 'Using well-known endpoint "' . $api . '" for "' . $host . '"');
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break 2;
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}
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break;
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case 'discovery':
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try {
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common_log(LOG_INFO, 'Trying to discover an oEmbed endpoint using link headers.');
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$api = self::discover($url);
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common_log(LOG_INFO, 'Found API endpoint ' . $api . ' for URL ' . $url);
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break 2;
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} catch (Exception $e) {
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common_log(LOG_INFO, 'Could not find an oEmbed endpoint using link headers.');
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// Just ignore it!
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}
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break;
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case 'service':
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$api = common_config('oembed', 'endpoint');
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common_log(LOG_INFO, 'Using service API endpoint ' . $api);
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break 2;
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break;
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}
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}
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if (empty($api)) {
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throw new ServerException(_('No oEmbed API endpoint available.'));
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}
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return self::getObjectFrom($api, $url, $params);
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}
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