3 * Implements Special:LinkSearch
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
21 * @ingroup SpecialPage
22 * @author Brion Vibber
27 * Special:LinkSearch to search the external-links table.
29 function wfSpecialLinkSearch( $par ) {
31 list( $limit, $offset ) = wfCheckLimits();
32 global $wgOut, $wgUrlProtocols, $wgMiserMode, $wgLang;
33 $target = $GLOBALS['wgRequest']->getVal( 'target', $par );
34 $namespace = $GLOBALS['wgRequest']->getIntorNull( 'namespace', null );
36 $protocols_list[] = '';
37 foreach( $wgUrlProtocols as $prot ) {
38 $protocols_list[] = $prot;
43 $pr_sl = strpos($target2, '//' );
44 $pr_cl = strpos($target2, ':' );
46 // For protocols with '//'
47 $protocol = substr( $target2, 0 , $pr_sl+2 );
48 $target2 = substr( $target2, $pr_sl+2 );
49 } elseif ( !$pr_sl && $pr_cl ) {
50 // For protocols without '//' like 'mailto:'
51 $protocol = substr( $target2, 0 , $pr_cl+1 );
52 $target2 = substr( $target2, $pr_cl+1 );
53 } elseif ( $protocol == '' && $target2 != '' ) {
55 $protocol = 'http://';
57 if ( !in_array( $protocol, $protocols_list ) ) {
58 // unsupported protocol, show original search request
63 $self = Title::makeTitle( NS_SPECIAL, 'Linksearch' );
65 $wgOut->allowClickjacking();
66 $wgOut->addWikiMsg( 'linksearch-text', '<nowiki>' . $wgLang->commaList( $wgUrlProtocols ) . '</nowiki>' );
67 $s = Xml::openElement( 'form', array( 'id' => 'mw-linksearch-form', 'method' => 'get', 'action' => $GLOBALS['wgScript'] ) ) .
68 Html::hidden( 'title', $self->getPrefixedDbKey() ) .
70 Xml::element( 'legend', array(), wfMsg( 'linksearch' ) ) .
71 Xml::inputLabel( wfMsg( 'linksearch-pat' ), 'target', 'target', 50, $target ) . ' ';
72 if ( !$wgMiserMode ) {
73 $s .= Xml::label( wfMsg( 'linksearch-ns' ), 'namespace' ) . ' ' .
74 Xml::namespaceSelector( $namespace, '' );
76 $s .= Xml::submitButton( wfMsg( 'linksearch-ok' ) ) .
78 Xml::closeElement( 'form' );
79 $wgOut->addHTML( $s );
82 $searcher = new LinkSearchPage;
83 $searcher->setParams( array(
85 'namespace' => $namespace,
86 'protocol' => $protocol ) );
87 $searcher->doQuery( $offset, $limit );
92 * @ingroup SpecialPage
94 class LinkSearchPage extends QueryPage {
95 function setParams( $params ) {
96 $this->mQuery = $params['query'];
97 $this->mNs = $params['namespace'];
98 $this->mProt = $params['protocol'];
106 * Disable RSS/Atom feeds
108 function isSyndicated() {
113 * Return an appropriately formatted LIKE query and the clause
115 static function mungeQuery( $query , $prot ) {
117 $rv = LinkFilter::makeLikeArray( $query , $prot );
119 // LinkFilter doesn't handle wildcard in IP, so we'll have to munge here.
120 if (preg_match('/^(:?[0-9]{1,3}\.)+\*\s*$|^(:?[0-9]{1,3}\.){3}[0-9]{1,3}:[0-9]*\*\s*$/', $query)) {
121 $dbr = wfGetDB( DB_SLAVE );
122 $rv = array( $prot . rtrim($query, " \t*"), $dbr->anyString() );
126 return array( $rv, $field );
129 function linkParameters() {
132 $params['target'] = $this->mProt . $this->mQuery;
133 if( isset( $this->mNs ) && !$wgMiserMode ) {
134 $params['namespace'] = $this->mNs;
141 $dbr = wfGetDB( DB_SLAVE );
142 $page = $dbr->tableName( 'page' );
143 $externallinks = $dbr->tableName( 'externallinks' );
145 /* strip everything past first wildcard, so that index-based-only lookup would be done */
146 list( $munged, $clause ) = self::mungeQuery( $this->mQuery, $this->mProt );
147 $stripped = LinkFilter::keepOneWildcard( $munged );
148 $like = $dbr->buildLike( $stripped );
151 if ( isset ($this->mNs) && !$wgMiserMode )
152 $encSQL = 'AND page_namespace=' . $dbr->addQuotes( $this->mNs );
154 $use_index = $dbr->useIndexClause( $clause );
157 page_namespace AS namespace,
163 $externallinks $use_index
170 function formatResult( $skin, $result ) {
171 $title = Title::makeTitle( $result->namespace, $result->title );
173 $pageLink = $skin->linkKnown( $title );
174 $urlLink = $skin->makeExternalLink( $url, $url );
176 return wfMsgHtml( 'linksearch-line', $urlLink, $pageLink );
180 * Override to check query validity.
182 function doQuery( $offset, $limit, $shownavigation=true ) {
184 list( $this->mMungedQuery, ) = LinkSearchPage::mungeQuery( $this->mQuery, $this->mProt );
185 if( $this->mMungedQuery === false ) {
186 $wgOut->addWikiMsg( 'linksearch-error' );
189 // Generates invalid xhtml with patterns that contain --
190 //$wgOut->addHTML( "\n<!-- " . htmlspecialchars( $this->mMungedQuery ) . " -->\n" );
191 parent::doQuery( $offset, $limit, $shownavigation );
196 * Override to squash the ORDER BY.
197 * We do a truncated index search, so the optimizer won't trust
198 * it as good enough for optimizing sort. The implicit ordering
199 * from the scan will usually do well enough for our needs.
201 function getOrder() {