<?php
/**
- * Laconica, the distributed open-source microblogging tool
+ * StatusNet, the distributed open-source microblogging tool
*
* Plugin to do linkbacks for notices containing links
*
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
- * @package Laconica
- * @author Evan Prodromou <evan@controlyourself.ca>
- * @copyright 2009 Control Yourself, Inc.
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://laconi.ca/
+ * @link http://status.net/
*/
-if (!defined('LACONICA')) {
+if (!defined('STATUSNET')) {
exit(1);
}
* are URLs, we test each URL to see if it supports any
*
* @category Plugin
- * @package Laconica
- * @author Evan Prodromou <evan@controlyourself.ca>
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://laconi.ca/
+ * @link http://status.net/
*
* @see Event
*/
parent::__construct();
}
- function onEndNoticeSave($notice)
+ function onHandleQueuedNotice($notice)
{
if ($notice->is_local == 1) {
// Try to avoid actually mucking with the
function linkbackUrl($url)
{
+ common_log(LOG_DEBUG,"Attempting linkback for " . $url);
+
$orig = $url;
$url = htmlspecialchars_decode($orig);
$scheme = parse_url($url, PHP_URL_SCHEME);
return $orig;
}
+ $pb = null;
+ $tb = null;
+
if (array_key_exists('X-Pingback', $result->headers)) {
- $endpoint = $result->headers['X-Pingback'];
- } else if (preg_match('/<link rel="pingback" href="([^"]+)" ?/?>/',
+ $pb = $result->headers['X-Pingback'];
+ } else if (preg_match('/<link rel="pingback" href="([^"]+)" ?\/?>/',
$result->body,
$match)) {
- $endpoint = $match[1];
+ $pb = $match[1];
+ }
+
+ if (!empty($pb)) {
+ $this->pingback($result->final_url, $pb);
} else {
- // XXX: do Trackback lookup
- return $orig;
+ $tb = $this->getTrackback($result->body, $result->final_url);
+ if (!empty($tb)) {
+ $this->trackback($result->final_url, $tb);
+ }
}
- $this->pingback($url, $endpoint);
return $orig;
}
{
$args = array($this->notice->uri, $url);
- $request = xmlrpc_encode_request('pingback.ping', $args);
- $context = stream_context_create(array('http' => array('method' => "POST",
- 'header' =>
- "Content-Type: text/xml\r\n".
- "User-Agent: " . $this->userAgent(),
- 'content' => $request)));
- $file = file_get_contents($endpoint, false, $context);
- $response = xmlrpc_decode($file);
- if (xmlrpc_is_fault($response)) {
- common_log(LOG_WARNING,
+ if (!extension_loaded('xmlrpc')) {
+ if (!dl('xmlrpc.so')) {
+ common_log(LOG_ERR, "Can't pingback; xmlrpc extension not available.");
+ return;
+ }
+ }
+
+ $request = HTTPClient::start();
+ try {
+ $response = $request->post($endpoint,
+ array('Content-Type: text/xml'),
+ xmlrpc_encode_request('pingback.ping', $args));
+ $response = xmlrpc_decode($response->getBody());
+ if (xmlrpc_is_fault($response)) {
+ common_log(LOG_WARNING,
"Pingback error for '$url' ($endpoint): ".
"$response[faultString] ($response[faultCode])");
- } else {
- common_log(LOG_INFO,
+ } else {
+ common_log(LOG_INFO,
"Pingback success for '$url' ($endpoint): ".
"'$response'");
+ }
+ } catch (HTTP_Request2_Exception $e) {
+ common_log(LOG_WARNING,
+ "Pingback request failed for '$url' ($endpoint)");
+ }
+ }
+
+ // Largely cadged from trackback_cls.php by
+ // Ran Aroussi <ran@blogish.org>, GPL2 or any later version
+ // http://phptrackback.sourceforge.net/
+
+ function getTrackback($text, $url)
+ {
+ if (preg_match_all('/(<rdf:RDF.*?<\/rdf:RDF>)/sm', $text, $match, PREG_SET_ORDER)) {
+ for ($i = 0; $i < count($match); $i++) {
+ if (preg_match('|dc:identifier="' . preg_quote($url) . '"|ms', $match[$i][1])) {
+ $rdf_array[] = trim($match[$i][1]);
+ }
+ }
+
+ // Loop through the RDFs array and extract trackback URIs
+
+ $tb_array = array(); // <- holds list of trackback URIs
+
+ if (!empty($rdf_array)) {
+
+ for ($i = 0; $i < count($rdf_array); $i++) {
+ if (preg_match('/trackback:ping="([^"]+)"/', $rdf_array[$i], $array)) {
+ $tb_array[] = trim($array[1]);
+ break;
+ }
+ }
+ }
+
+ // Return Trackbacks
+
+ if (empty($tb_array)) {
+ return null;
+ } else {
+ return $tb_array[0];
+ }
+ }
+
+ if (preg_match_all('/(<a[^>]*?rel=[\'"]trackback[\'"][^>]*?>)/', $text, $match)) {
+ foreach ($match[1] as $atag) {
+ if (preg_match('/href=[\'"]([^\'"]*?)[\'"]/', $atag, $url)) {
+ return $url[1];
+ }
+ }
+ }
+
+ return null;
+
+ }
+
+ function trackback($url, $endpoint)
+ {
+ $profile = $this->notice->getProfile();
+
+ $args = array('title' => sprintf(_('%1$s\'s status on %2$s'),
+ $profile->nickname,
+ common_exact_date($this->notice->created)),
+ 'excerpt' => $this->notice->content,
+ 'url' => $this->notice->uri,
+ 'blog_name' => $profile->nickname);
+
+ $fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
+
+ $result = $fetcher->post($endpoint,
+ http_build_query($args),
+ array('User-Agent: ' . $this->userAgent()));
+
+ if ($result->status != '200') {
+ common_log(LOG_WARNING,
+ "Trackback error for '$url' ($endpoint): ".
+ "$result->body");
+ } else {
+ common_log(LOG_INFO,
+ "Trackback success for '$url' ($endpoint): ".
+ "'$result->body'");
}
}
function userAgent()
{
return 'LinkbackPlugin/'.LINKBACKPLUGIN_VERSION .
- ' Laconica/' . LACONICA_VERSION;
+ ' StatusNet/' . STATUSNET_VERSION;
+ }
+
+ function onPluginVersion(&$versions)
+ {
+ $versions[] = array('name' => 'Linkback',
+ 'version' => LINKBACKPLUGIN_VERSION,
+ 'author' => 'Evan Prodromou',
+ 'homepage' => 'http://status.net/wiki/Plugin:Linkback',
+ 'rawdescription' =>
+ _m('Notify blog authors when their posts have been linked in '.
+ 'microblog notices using '.
+ '<a href="http://www.hixie.ch/specs/pingback/pingback">Pingback</a> '.
+ 'or <a href="http://www.movabletype.org/docs/mttrackback.html">Trackback</a> protocols.'));
+ return true;
}
}
projects / quix0rs-gnu-social.git / blobdiff