Changeset 9012

Timestamp:

09/27/2008 09:40:09 PM (18 years ago)

Author:

westi

Message:

Move the pingbacks and trackbacks to the new HTTP api. See #7793 props jacobsantos.

File:

• trunk/wp-includes/comment.php (modified) (3 diffs)

trunk/wp-includes/comment.php

@@ -1052 +1052 @@
  *
  * @since 1.5.0
- * @uses $wp_version
  *
  * @param string $url URL to ping.
- * @param int $timeout_bytes Number of bytes to timeout at. Prevents big file downloads, default is 2048.
+ * @param int $deprecated Not Used.
  * @return bool|string False on failure, string containing URI on success.
  */
-function discover_pingback_server_uri($url, $timeout_bytes = 2048) {
-        global $wp_version;
-
-        $byte_count = 0;
-        $contents = '';
-        $headers = '';
+function discover_pingback_server_uri($url, $deprecated = 2048) {
+
         $pingback_str_dquote = 'rel="pingback"';
         $pingback_str_squote = 'rel=\'pingback\'';
-        $x_pingback_str = 'x-pingback: ';
-
-        extract(parse_url($url), EXTR_SKIP);
-
-        if ( !isset($host) ) // Not an URL. This should never happen.
+
+        /** @todo Should use Filter Extension or custom preg_match instead. */
+        $parsed_url = parse_url($url);
+
+        if ( ! isset( $parsed_url['host'] ) ) // Not an URL. This should never happen.
                 return false;
 
-        $path  = ( !isset($path) ) ? '/'          : $path;
-        $path .= ( isset($query) ) ? '?' . $query : '';
-        $port  = ( isset($port)  ) ? $port        : 80;
-
-        // Try to connect to the server at $host
-        $fp = @fsockopen($host, $port, $errno, $errstr, 2);
-        if ( !$fp ) // Couldn't open a connection to $host
+        $response = wp_remote_get( $url, array( 'timeout' => 2, 'httpversion' => '1.1' ) );
+
+        if ( is_wp_error( $response ) )
                 return false;
 
-        // Send the GET request
-        $request = "GET $path HTTP/1.1\r\nHost: $host\r\nUser-Agent: WordPress/$wp_version \r\n\r\n";
-        // ob_end_flush();
-        fputs($fp, $request);
-
-        // Let's check for an X-Pingback header first
-        while ( !feof($fp) ) {
-                $line = fgets($fp, 512);
-                if ( trim($line) == '' )
-                        break;
-                $headers .= trim($line)."\n";
-                $x_pingback_header_offset = strpos(strtolower($headers), $x_pingback_str);
-                if ( $x_pingback_header_offset ) {
-                        // We got it!
-                        preg_match('#x-pingback: (.+)#is', $headers, $matches);
-                        $pingback_server_url = trim($matches[1]);
+        if ( isset( $response['headers']['x-pingback'] ) )
+                return $response['headers']['x-pingback'];
+
+        // Not an (x)html, sgml, or xml page, no use going further.
+        if ( isset( $response['headers']['content-type'] ) && preg_match('#(image|audio|video|model)/#is', $response['headers']['content-type']) )
+                return false;
+
+        $contents = $response['body'];
+
+        $pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
+        $pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
+        if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
+                $quote = ($pingback_link_offset_dquote) ? '"' : '\'';
+                $pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
+                $pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
+                $pingback_href_start = $pingback_href_pos+6;
+                $pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
+                $pingback_server_url_len = $pingback_href_end - $pingback_href_start;
+                $pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
+
+                // We may find rel="pingback" but an incomplete pingback URL
+                if ( $pingback_server_url_len > 0 ) { // We got it!
                         return $pingback_server_url;
                 }
-                if ( strpos(strtolower($headers), 'content-type: ') ) {
-                        preg_match('#content-type: (.+)#is', $headers, $matches);
-                        $content_type = trim($matches[1]);
-                }
-        }
-
-        if ( preg_match('#(image|audio|video|model)/#is', $content_type) ) // Not an (x)html, sgml, or xml page, no use going further
-                return false;
-
-        while ( !feof($fp) ) {
-                $line = fgets($fp, 1024);
-                $contents .= trim($line);
-                $pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
-                $pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
-                if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
-                        $quote = ($pingback_link_offset_dquote) ? '"' : '\'';
-                        $pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
-                        $pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
-                        $pingback_href_start = $pingback_href_pos+6;
-                        $pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
-                        $pingback_server_url_len = $pingback_href_end - $pingback_href_start;
-                        $pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
-                        // We may find rel="pingback" but an incomplete pingback URL
-                        if ( $pingback_server_url_len > 0 ) { // We got it!
-                                fclose($fp);
-                                return $pingback_server_url;
-                        }
-                }
-                $byte_count += strlen($line);
-                if ( $byte_count > $timeout_bytes ) {
-                        // It's no use going further, there probably isn't any pingback
-                        // server to find in this file. (Prevents loading large files.)
-                        fclose($fp);
-                        return false;
-                }
-        }
-
-        // We didn't find anything.
-        fclose($fp);
+        }
+
         return false;
 }
@@ -1333 +1293 @@
  * @since 0.71
  * @uses $wpdb
- * @uses $wp_version WordPress version
  *
  * @param string $trackback_url URL to send trackbacks.
@@ -1342 +1301 @@
  */
 function trackback($trackback_url, $title, $excerpt, $ID) {
-        global $wpdb, $wp_version;
+        global $wpdb;
 
         if ( empty($trackback_url) )
                 return;
 
-        $title = urlencode($title);
-        $excerpt = urlencode($excerpt);
-        $blog_name = urlencode(get_option('blogname'));
-        $tb_url = $trackback_url;
-        $url = urlencode(get_permalink($ID));
-        $query_string = "title=$title&url=$url&blog_name=$blog_name&excerpt=$excerpt";
-        $trackback_url = parse_url($trackback_url);
-        $http_request = 'POST ' . $trackback_url['path'] . ($trackback_url['query'] ? '?'.$trackback_url['query'] : '') . " HTTP/1.0\r\n";
-        $http_request .= 'Host: '.$trackback_url['host']."\r\n";
-        $http_request .= 'Content-Type: application/x-www-form-urlencoded; charset='.get_option('blog_charset')."\r\n";
-        $http_request .= 'Content-Length: '.strlen($query_string)."\r\n";
-        $http_request .= "User-Agent: WordPress/" . $wp_version;
-        $http_request .= "\r\n\r\n";
-        $http_request .= $query_string;
-        if ( '' == $trackback_url['port'] )
-                $trackback_url['port'] = 80;
-        $fs = @fsockopen($trackback_url['host'], $trackback_url['port'], $errno, $errstr, 4);
-        @fputs($fs, $http_request);
-        @fclose($fs);
-
-        $tb_url = addslashes( $tb_url );
+        $options = array();
+        $options['timeout'] = 4;
+        $options['body'] = array(
+                'title' => urlencode($title),
+                'url' => urlencode(get_permalink($ID)),
+                'blog_name' => urlencode(get_option('blogname')),
+                'excerpt' => urlencode($excerpt)
+        );
+
+        wp_remote_post($trackback_url, $options);
+
+        $tb_url = addslashes( $trackback_url );
         $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', '$tb_url') WHERE ID = %d", $ID) );
         return $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, '$tb_url', '')) WHERE ID = %d", $ID) );