Allow exempting domain names from rel="nofollow"

[lhc/web/wiklou.git] / includes / parser / Parser.php

diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index c37c48e..b8c1325 100644 (file)
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -1130,7 +1130,7 @@ class Parser
                if ( $text === false ) {
                        # Not an image, make a link
                        $text = $sk->makeExternalLink( $url, $wgContLang->markNoConversion($url), true, 'free', 
-                               $this->getExternalLinkAttribs() );
+                               $this->getExternalLinkAttribs( $url ) );
                        # Register it in the output object...
                        # Replace unnecessary URL escape codes with their equivalent characters
                        $pasteurized = self::replaceUnusualEscapes( $url );
@@ -1410,8 +1410,8 @@ class Parser
                        # This means that users can paste URLs directly into the text
                        # Funny characters like ö aren't valid in URLs anyway
                        # This was changed in August 2004
-                       $s .= $sk->makeExternalLink( $url, $text, false, $linktype, $this->getExternalLinkAttribs() ) 
-                               . $dtrail . $trail;
+                       $s .= $sk->makeExternalLink( $url, $text, false, $linktype,
+                               $this->getExternalLinkAttribs( $url ) ) . $dtrail . $trail;
 
                        # Register link in the output object.
                        # Replace unnecessary URL escape codes with the referenced character
@@ -1424,12 +1424,36 @@ class Parser
                return $s;
        }
 
-       function getExternalLinkAttribs() {
+       /**
+        * Get an associative array of additional HTML attributes appropriate for a
+        * particular external link.  This currently may include rel => nofollow
+        * (depending on configuration, namespace, and the URL's domain) and/or a
+        * target attribute (depending on configuration).
+        *
+        * @param string $url Optional URL, to extract the domain from for rel =>
+        *   nofollow if appropriate
+        * @return array Associative array of HTML attributes
+        */
+       function getExternalLinkAttribs( $url = false ) {
                $attribs = array();
                global $wgNoFollowLinks, $wgNoFollowNsExceptions;
                $ns = $this->mTitle->getNamespace();
                if( $wgNoFollowLinks && !in_array($ns, $wgNoFollowNsExceptions) ) {
                        $attribs['rel'] = 'nofollow';
+
+                       global $wgNoFollowDomainExceptions;
+                       if ( $wgNoFollowDomainExceptions ) {
+                               $bits = wfParseUrl( $url );
+                               if ( is_array( $bits ) && isset( $bits['host'] ) ) {
+                                       foreach ( $wgNoFollowDomainExceptions as $domain ) {
+                                               if( substr( $bits['host'], -strlen( $domain ) )
+                                               == $domain ) {
+                                                       unset( $attribs['rel'] );
+                                                       break;
+                                               }
+                                       }
+                               }
+                       }
                }
                if ( $this->mOptions->getExternalLinkTarget() ) {
                        $attribs['target'] = $this->mOptions->getExternalLinkTarget();