%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Implements Special:LinkSearch
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
* @author Brion Vibber
*/
use Wikimedia\Rdbms\IResultWrapper;
use Wikimedia\Rdbms\IDatabase;
/**
* Special:LinkSearch to search the external-links table.
* @ingroup SpecialPage
*/
class LinkSearchPage extends QueryPage {
/** @var array|bool */
private $mungedQuery = false;
function setParams( $params ) {
$this->mQuery = $params['query'];
$this->mNs = $params['namespace'];
$this->mProt = $params['protocol'];
}
function __construct( $name = 'LinkSearch' ) {
parent::__construct( $name );
// Since we don't control the constructor parameters, we can't inject services that way.
// Instead, we initialize services in the execute() method, and allow them to be overridden
// using the setServices() method.
}
function isCacheable() {
return false;
}
public function execute( $par ) {
$this->setHeaders();
$this->outputHeader();
$out = $this->getOutput();
$out->allowClickjacking();
$request = $this->getRequest();
$target = $request->getVal( 'target', $par );
$namespace = $request->getIntOrNull( 'namespace' );
$protocols_list = [];
foreach ( $this->getConfig()->get( 'UrlProtocols' ) as $prot ) {
if ( $prot !== '//' ) {
$protocols_list[] = $prot;
}
}
$target2 = $target;
// Get protocol, default is http://
$protocol = 'http://';
$bits = wfParseUrl( $target );
if ( isset( $bits['scheme'] ) && isset( $bits['delimiter'] ) ) {
$protocol = $bits['scheme'] . $bits['delimiter'];
// Make sure wfParseUrl() didn't make some well-intended correction in the
// protocol
if ( strcasecmp( $protocol, substr( $target, 0, strlen( $protocol ) ) ) === 0 ) {
$target2 = substr( $target, strlen( $protocol ) );
} else {
// If it did, let LinkFilter::makeLikeArray() handle this
$protocol = '';
}
}
$out->addWikiMsg(
'linksearch-text',
'<nowiki>' . $this->getLanguage()->commaList( $protocols_list ) . '</nowiki>',
count( $protocols_list )
);
$fields = [
'target' => [
'type' => 'text',
'name' => 'target',
'id' => 'target',
'size' => 50,
'label-message' => 'linksearch-pat',
'default' => $target,
'dir' => 'ltr',
]
];
if ( !$this->getConfig()->get( 'MiserMode' ) ) {
$fields += [
'namespace' => [
'type' => 'namespaceselect',
'name' => 'namespace',
'label-message' => 'linksearch-ns',
'default' => $namespace,
'id' => 'namespace',
'all' => '',
'cssclass' => 'namespaceselector',
],
];
}
$hiddenFields = [
'title' => $this->getPageTitle()->getPrefixedDBkey(),
];
$htmlForm = HTMLForm::factory( 'ooui', $fields, $this->getContext() );
$htmlForm->addHiddenFields( $hiddenFields );
$htmlForm->setSubmitTextMsg( 'linksearch-ok' );
$htmlForm->setWrapperLegendMsg( 'linksearch' );
$htmlForm->setAction( wfScript() );
$htmlForm->setMethod( 'get' );
$htmlForm->prepareForm()->displayForm( false );
$this->addHelpLink( 'Help:Linksearch' );
if ( $target != '' ) {
$this->setParams( [
'query' => Parser::normalizeLinkUrl( $target2 ),
'namespace' => $namespace,
'protocol' => $protocol ] );
parent::execute( $par );
if ( $this->mungedQuery === false ) {
$out->addWikiMsg( 'linksearch-error' );
}
}
}
/**
* Disable RSS/Atom feeds
* @return bool
*/
function isSyndicated() {
return false;
}
/**
* Return an appropriately formatted LIKE query and the clause
*
* @param string $query Search pattern to search for
* @param string $prot Protocol, e.g. 'http://'
*
* @return array
*/
static function mungeQuery( $query, $prot ) {
$field = 'el_index';
$dbr = wfGetDB( DB_REPLICA );
if ( $query === '*' && $prot !== '' ) {
// Allow queries like 'ftp://*' to find all ftp links
$rv = [ $prot, $dbr->anyString() ];
} else {
$rv = LinkFilter::makeLikeArray( $query, $prot );
}
if ( $rv === false ) {
// LinkFilter doesn't handle wildcard in IP, so we'll have to munge here.
$pattern = '/^(:?[0-9]{1,3}\.)+\*\s*$|^(:?[0-9]{1,3}\.){3}[0-9]{1,3}:[0-9]*\*\s*$/';
if ( preg_match( $pattern, $query ) ) {
$rv = [ $prot . rtrim( $query, " \t*" ), $dbr->anyString() ];
$field = 'el_to';
}
}
return [ $rv, $field ];
}
function linkParameters() {
$params = [];
$params['target'] = $this->mProt . $this->mQuery;
if ( $this->mNs !== null && !$this->getConfig()->get( 'MiserMode' ) ) {
$params['namespace'] = $this->mNs;
}
return $params;
}
public function getQueryInfo() {
$dbr = wfGetDB( DB_REPLICA );
// strip everything past first wildcard, so that
// index-based-only lookup would be done
list( $this->mungedQuery, $clause ) = self::mungeQuery( $this->mQuery, $this->mProt );
if ( $this->mungedQuery === false ) {
// Invalid query; return no results
return [ 'tables' => 'page', 'fields' => 'page_id', 'conds' => '0=1' ];
}
$stripped = LinkFilter::keepOneWildcard( $this->mungedQuery );
$like = $dbr->buildLike( $stripped );
$retval = [
'tables' => [ 'page', 'externallinks' ],
'fields' => [
'namespace' => 'page_namespace',
'title' => 'page_title',
'value' => 'el_index',
'url' => 'el_to'
],
'conds' => [
'page_id = el_from',
"$clause $like"
],
'options' => [ 'USE INDEX' => $clause ]
];
if ( $this->mNs !== null && !$this->getConfig()->get( 'MiserMode' ) ) {
$retval['conds']['page_namespace'] = $this->mNs;
}
return $retval;
}
/**
* Pre-fill the link cache
*
* @param IDatabase $db
* @param IResultWrapper $res
*/
function preprocessResults( $db, $res ) {
$this->executeLBFromResultWrapper( $res );
}
/**
* @param Skin $skin
* @param object $result Result row
* @return string
*/
function formatResult( $skin, $result ) {
$title = new TitleValue( (int)$result->namespace, $result->title );
$pageLink = $this->getLinkRenderer()->makeLink( $title );
$url = $result->url;
$urlLink = Linker::makeExternalLink( $url, $url );
return $this->msg( 'linksearch-line' )->rawParams( $urlLink, $pageLink )->escaped();
}
/**
* Override to squash the ORDER BY.
* We do a truncated index search, so the optimizer won't trust
* it as good enough for optimizing sort. The implicit ordering
* from the scan will usually do well enough for our needs.
* @return array
*/
function getOrderFields() {
return [];
}
protected function getGroupName() {
return 'redirects';
}
/**
* enwiki complained about low limits on this special page
*
* @see T130058
* @todo FIXME This special page should not use LIMIT for paging
* @return int
*/
protected function getMaxResults() {
return max( parent::getMaxResults(), 60000 );
}
}
Zerion Mini Shell 1.0