Changeset 1671:7c0168380f80

Timestamp:

08/31/13 14:37:33 (11 years ago)

Author:

Florent Cotton <florent.cotton@…>

Branch:

pingbacks

Message:

Commit intermédiaire portant uniquement sur la découverte et le ping des URLs de pingback (see #1370)

File:

• inc/core/class.dc.trackback.php (modified) (7 diffs)

inc/core/class.dc.trackback.php

@@ -80 +80 @@
           }
           
-          $data = array(
-               'title' => $post_title,
-               'excerpt' => $post_excerpt,
-               'url' => $post_url,
-               'blog_name' => trim(html::escapeHTML(html::clean($this->core->blog->name)))
-               //,'__debug' => false
-          );
-          
-          # Ping
-          try
-          {
-               $http = self::initHttp($url,$path);
-               $http->post($path,$data,'UTF-8');
-               $res = $http->getContent();
-          }
-          catch (Exception $e)
-          {
-               throw new Exception(__('Unable to ping URL'));
-          }
-          
-          $pattern =
-          '|<response>.*<error>(.*)</error>(.*)'.
-          '(<message>(.*)</message>(.*))?'.
-          '</response>|msU';
-          
-          if (!preg_match($pattern,$res,$match))
-          {
-               throw new Exception(sprintf(__('%s is not a ping URL'),$url));
-          }
-          
-          $ping_error = trim($match[1]);
-          $ping_msg = (!empty($match[4])) ? $match[4] : '';
+          $ping_parts = explode('|',$url);
+          
+          # Let's walk by the trackback way
+          if (count($ping_parts) < 2) {
+               $data = array(
+                    'title' => $post_title,
+                    'excerpt' => $post_excerpt,
+                    'url' => $post_url,
+                    'blog_name' => trim(html::escapeHTML(html::clean($this->core->blog->name)))
+                    //,'__debug' => false
+               );
+               
+               # Ping
+               try
+               {
+                    $http = self::initHttp($url,$path);
+                    $http->post($path,$data,'UTF-8');
+                    $res = $http->getContent();
+               }
+               catch (Exception $e)
+               {
+                    throw new Exception(__('Unable to ping URL'));
+               }
+               
+               $pattern =
+               '|<response>.*<error>(.*)</error>(.*)'.
+               '(<message>(.*)</message>(.*))?'.
+               '</response>|msU';
+               
+               if (!preg_match($pattern,$res,$match))
+               {
+                    throw new Exception(sprintf(__('%s is not a ping URL'),$url));
+               }
+               
+               $ping_error = trim($match[1]);
+               $ping_msg = (!empty($match[4])) ? $match[4] : '';
+          }
+          # Damnit ! Let's play pingback
+          else {
+               try {
+                    $xmlrpc = new xmlrpcClient($ping_parts[0]);
+                    $res = $xmlrpc->query('pingback.ping', $post_url, $ping_parts[1]);
+                    $ping_error = '0';
+               }
+               catch (xmlrpcException $e) {
+                    $ping_error = $e->getCode();
+                    $ping_msg = $e->getMessage(); 
+               }
+               catch (Exception $e) {
+                    throw new Exception(__('Unable to ping URL'));
+               }
+          }
           
           if ($ping_error != '0') {
@@ -346 +366 @@
                for ($i = 0; $i<count($match); $i++)
                {
-                    if (preg_match('/href="(http:\/\/[^"]+)"/ms', $match[$i][1], $matches)) {
+                    if (preg_match('/href="(https?:\/\/[^"]+)"/ms', $match[$i][1], $matches)) {
                          $res[$matches[1]] = 1;
                     }
@@ -358 +378 @@
                for ($i = 0; $i<count($match); $i++)
                {
-                    if (preg_match('/cite="(http:\/\/[^"]+)"/ms', $match[$i][2], $matches)) {
+                    if (preg_match('/cite="(https?:\/\/[^"]+)"/ms', $match[$i][2], $matches)) {
                          $res[$matches[1]] = 1;
                     }
@@ -374 +394 @@
                $http->get($path);
                $page_content = $http->getContent();
+               $pb_url = $http->getHeader('x-pingback');
           }
           catch (Exception $e)
@@ -380 +401 @@
           }
           
+          # If we've got a X-Pingback header and it's a valid URL, it will be enough
+          if ($pb_url && filter_var($pb_url,FILTER_VALIDATE_URL) && preg_match('!^https?:!',$pb_url)) {
+               return $pb_url.'|'.$url;
+          }
+          
+          # No X-Pingback header ? OK, let's check for a trackback data chunk...
           $pattern_rdf =
           '/<rdf:RDF.*?>.*?'.
@@ -388 +415 @@
           preg_match_all($pattern_rdf,$page_content,$rdf_all,PREG_SET_ORDER);
           
+          $url_path = parse_url($url, PHP_URL_PATH);
+          $sanitized_url = str_replace($url_path, html::sanitizeURL($url_path), $url);
+          
           for ($i=0; $i<count($rdf_all); $i++)
           {
                $rdf = $rdf_all[$i][1];
-               
-               if (preg_match('/dc:identifier="'.preg_quote($url,'/').'"/msi',$rdf)) {
+               if (preg_match('/dc:identifier="'.preg_quote($url,'/').'"/msi',$rdf) ||
+                    preg_match('/dc:identifier="'.preg_quote($sanitized_url,'/').'"/msi',$rdf)) {
                     if (preg_match('/trackback:ping="(.*?)"/msi',$rdf,$tb_link)) {
                          return $tb_link[1];
@@ -399 +429 @@
           }
           
+          # Last call before the point of no return : a link rel=pingback, maybe ?
+          $pattern_pingback = '!<link rel="pingback" href="(.*?)"( /)?>!msi';
+          
+          if (preg_match($pattern_pingback,$page_content,$m)) {
+               $pb_url = $m[1];
+               if (filter_var($pb_url,FILTER_VALIDATE_URL) && preg_match('!^https?:!',$pb_url)) {
+                    return $pb_url.'|'.$url;
+               }
+          }
+          
           return null;
      }