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Move the pingbacks and trackbacks to the new HTTP api. See #7793 props jacobsantos.
git-svn-id: http://svn.automattic.com/wordpress/trunk@9012 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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westi
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@ -1051,93 +1051,53 @@ function wp_update_comment_count_now($post_id) {
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* check for the rel="pingback" has more overhead than just the header.
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*
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* @since 1.5.0
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* @uses $wp_version
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*
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* @param string $url URL to ping.
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* @param int $timeout_bytes Number of bytes to timeout at. Prevents big file downloads, default is 2048.
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* @param int $deprecated Not Used.
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* @return bool|string False on failure, string containing URI on success.
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*/
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function discover_pingback_server_uri($url, $timeout_bytes = 2048) {
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global $wp_version;
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function discover_pingback_server_uri($url, $deprecated = 2048) {
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$byte_count = 0;
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$contents = '';
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$headers = '';
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$pingback_str_dquote = 'rel="pingback"';
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$pingback_str_squote = 'rel=\'pingback\'';
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$x_pingback_str = 'x-pingback: ';
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extract(parse_url($url), EXTR_SKIP);
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/** @todo Should use Filter Extension or custom preg_match instead. */
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$parsed_url = parse_url($url);
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if ( !isset($host) ) // Not an URL. This should never happen.
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if ( ! isset( $parsed_url['host'] ) ) // Not an URL. This should never happen.
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return false;
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$path = ( !isset($path) ) ? '/' : $path;
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$path .= ( isset($query) ) ? '?' . $query : '';
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$port = ( isset($port) ) ? $port : 80;
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$response = wp_remote_get( $url, array( 'timeout' => 2, 'httpversion' => '1.1' ) );
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// Try to connect to the server at $host
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$fp = @fsockopen($host, $port, $errno, $errstr, 2);
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if ( !$fp ) // Couldn't open a connection to $host
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if ( is_wp_error( $response ) )
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return false;
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// Send the GET request
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$request = "GET $path HTTP/1.1\r\nHost: $host\r\nUser-Agent: WordPress/$wp_version \r\n\r\n";
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// ob_end_flush();
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fputs($fp, $request);
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if ( isset( $response['headers']['x-pingback'] ) )
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return $response['headers']['x-pingback'];
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// Let's check for an X-Pingback header first
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while ( !feof($fp) ) {
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$line = fgets($fp, 512);
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if ( trim($line) == '' )
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break;
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$headers .= trim($line)."\n";
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$x_pingback_header_offset = strpos(strtolower($headers), $x_pingback_str);
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if ( $x_pingback_header_offset ) {
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// We got it!
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preg_match('#x-pingback: (.+)#is', $headers, $matches);
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$pingback_server_url = trim($matches[1]);
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// Not an (x)html, sgml, or xml page, no use going further.
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if ( isset( $response['headers']['content-type'] ) && preg_match('#(image|audio|video|model)/#is', $response['headers']['content-type']) )
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return false;
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$contents = $response['body'];
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$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
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$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
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if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
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$quote = ($pingback_link_offset_dquote) ? '"' : '\'';
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$pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
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$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
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$pingback_href_start = $pingback_href_pos+6;
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$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
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$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
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$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
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// We may find rel="pingback" but an incomplete pingback URL
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if ( $pingback_server_url_len > 0 ) { // We got it!
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return $pingback_server_url;
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}
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if ( strpos(strtolower($headers), 'content-type: ') ) {
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preg_match('#content-type: (.+)#is', $headers, $matches);
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$content_type = trim($matches[1]);
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}
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}
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if ( preg_match('#(image|audio|video|model)/#is', $content_type) ) // Not an (x)html, sgml, or xml page, no use going further
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return false;
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while ( !feof($fp) ) {
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$line = fgets($fp, 1024);
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$contents .= trim($line);
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$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
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$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
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if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
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$quote = ($pingback_link_offset_dquote) ? '"' : '\'';
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$pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
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$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
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$pingback_href_start = $pingback_href_pos+6;
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$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
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$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
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$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
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// We may find rel="pingback" but an incomplete pingback URL
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if ( $pingback_server_url_len > 0 ) { // We got it!
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fclose($fp);
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return $pingback_server_url;
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}
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}
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$byte_count += strlen($line);
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if ( $byte_count > $timeout_bytes ) {
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// It's no use going further, there probably isn't any pingback
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// server to find in this file. (Prevents loading large files.)
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fclose($fp);
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return false;
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}
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}
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// We didn't find anything.
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fclose($fp);
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return false;
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}
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@ -1332,7 +1292,6 @@ function privacy_ping_filter($sites) {
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*
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* @since 0.71
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* @uses $wpdb
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* @uses $wp_version WordPress version
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*
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* @param string $trackback_url URL to send trackbacks.
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* @param string $title Title of post.
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@ -1341,32 +1300,23 @@ function privacy_ping_filter($sites) {
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* @return mixed Database query from update.
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*/
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function trackback($trackback_url, $title, $excerpt, $ID) {
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global $wpdb, $wp_version;
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global $wpdb;
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if ( empty($trackback_url) )
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return;
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$title = urlencode($title);
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$excerpt = urlencode($excerpt);
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$blog_name = urlencode(get_option('blogname'));
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$tb_url = $trackback_url;
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$url = urlencode(get_permalink($ID));
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$query_string = "title=$title&url=$url&blog_name=$blog_name&excerpt=$excerpt";
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$trackback_url = parse_url($trackback_url);
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$http_request = 'POST ' . $trackback_url['path'] . ($trackback_url['query'] ? '?'.$trackback_url['query'] : '') . " HTTP/1.0\r\n";
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$http_request .= 'Host: '.$trackback_url['host']."\r\n";
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$http_request .= 'Content-Type: application/x-www-form-urlencoded; charset='.get_option('blog_charset')."\r\n";
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$http_request .= 'Content-Length: '.strlen($query_string)."\r\n";
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$http_request .= "User-Agent: WordPress/" . $wp_version;
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$http_request .= "\r\n\r\n";
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$http_request .= $query_string;
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if ( '' == $trackback_url['port'] )
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$trackback_url['port'] = 80;
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$fs = @fsockopen($trackback_url['host'], $trackback_url['port'], $errno, $errstr, 4);
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@fputs($fs, $http_request);
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@fclose($fs);
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$options = array();
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$options['timeout'] = 4;
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$options['body'] = array(
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'title' => urlencode($title),
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'url' => urlencode(get_permalink($ID)),
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'blog_name' => urlencode(get_option('blogname')),
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'excerpt' => urlencode($excerpt)
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);
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$tb_url = addslashes( $tb_url );
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wp_remote_post($trackback_url, $options);
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$tb_url = addslashes( $trackback_url );
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$wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', '$tb_url') WHERE ID = %d", $ID) );
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return $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, '$tb_url', '')) WHERE ID = %d", $ID) );
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}
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