X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=plugins%2FLinkbackPlugin.php;h=8e44beae1828b207d008e08119b44e4e82856bcb;hb=5a1cbdc6f1e32be7b8430924a1125422d8457584;hp=77adfa87d13d60ed9569bcb9f71165f6afc21054;hpb=c97142ad3edea1652f39e7fb58c8c3443f8a0f67;p=quix0rs-gnu-social.git diff --git a/plugins/LinkbackPlugin.php b/plugins/LinkbackPlugin.php index 77adfa87d1..8e44beae18 100644 --- a/plugins/LinkbackPlugin.php +++ b/plugins/LinkbackPlugin.php @@ -1,6 +1,6 @@ . * * @category Plugin - * @package Laconica - * @author Evan Prodromou - * @copyright 2009 Control Yourself, Inc. + * @package StatusNet + * @author Evan Prodromou + * @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); } @@ -42,10 +42,10 @@ define('LINKBACKPLUGIN_VERSION', '0.1'); * are URLs, we test each URL to see if it supports any * * @category Plugin - * @package Laconica - * @author Evan Prodromou + * @package StatusNet + * @author Evan Prodromou * @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 */ @@ -59,7 +59,7 @@ class LinkbackPlugin extends Plugin parent::__construct(); } - function onEndNoticeSave($notice) + function onHandleQueuedNotice($notice) { if ($notice->is_local == 1) { // Try to avoid actually mucking with the @@ -75,6 +75,8 @@ class LinkbackPlugin extends Plugin function linkbackUrl($url) { + common_log(LOG_DEBUG,"Attempting linkback for " . $url); + $orig = $url; $url = htmlspecialchars_decode($orig); $scheme = parse_url($url, PHP_URL_SCHEME); @@ -94,18 +96,26 @@ class LinkbackPlugin extends Plugin return $orig; } + $pb = null; + $tb = null; + if (array_key_exists('X-Pingback', $result->headers)) { - $endpoint = $result->headers['X-Pingback']; - } else if (preg_match('//', + $pb = $result->headers['X-Pingback']; + } else if (preg_match('//', $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; } @@ -113,28 +123,127 @@ class LinkbackPlugin extends Plugin { $args = array($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' ($endpoint)"); + } + } + + // Largely cadged from trackback_cls.php by + // Ran Aroussi , GPL2 or any later version + // http://phptrackback.sourceforge.net/ + + function getTrackback($text, $url) + { + if (preg_match_all('/()/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('/(]*?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 '. + 'Pingback '. + 'or Trackback protocols.')); + return true; } }