Changeset 9012

Timestamp:

09/27/2008 09:40:09 PM (17 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) );