Expose $wgMaxArticleSize in siteinfo query api

[mediawiki.git] / includes / specials / SpecialProtectedpages.php

<?php
/**
 * Implements Special:Protectedpages
 *
 * 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
 */

/**
 * A special page that lists protected pages
 *
 * @ingroup SpecialPage
 */
class SpecialProtectedpages extends SpecialPage {
        protected $IdLevel = 'level';
        protected $IdType = 'type';

        public function __construct() {
                parent::__construct( 'Protectedpages' );
        }

        public function execute( $par ) {
                $this->setHeaders();
                $this->outputHeader();
                $this->getOutput()->addModuleStyles( 'mediawiki.special' );

                $request = $this->getRequest();
                $type = $request->getVal( $this->IdType );
                $level = $request->getVal( $this->IdLevel );
                $sizetype = $request->getVal( 'sizetype' );
                $size = $request->getIntOrNull( 'size' );
                $ns = $request->getIntOrNull( 'namespace' );
                $indefOnly = $request->getBool( 'indefonly' ) ? 1 : 0;
                $cascadeOnly = $request->getBool( 'cascadeonly' ) ? 1 : 0;
                $noRedirect = $request->getBool( 'noredirect' ) ? 1 : 0;

                $pager = new ProtectedPagesPager(
                        $this,
                        [],
                        $type,
                        $level,
                        $ns,
                        $sizetype,
                        $size,
                        $indefOnly,
                        $cascadeOnly,
                        $noRedirect
                );

                $this->getOutput()->addHTML( $this->showOptions(
                        $ns,
                        $type,
                        $level,
                        $sizetype,
                        $size,
                        $indefOnly,
                        $cascadeOnly,
                        $noRedirect
                ) );

                if ( $pager->getNumRows() ) {
                        $this->getOutput()->addParserOutputContent( $pager->getFullOutput() );
                } else {
                        $this->getOutput()->addWikiMsg( 'protectedpagesempty' );
                }
        }

        /**
         * @param int $namespace
         * @param string $type Restriction type
         * @param string $level Restriction level
         * @param string $sizetype "min" or "max"
         * @param int $size
         * @param bool $indefOnly Only indefinite protection
         * @param bool $cascadeOnly Only cascading protection
         * @param bool $noRedirect Don't show redirects
         * @return string Input form
         */
        protected function showOptions( $namespace, $type = 'edit', $level, $sizetype,
                $size, $indefOnly, $cascadeOnly, $noRedirect
        ) {
                $title = $this->getPageTitle();

                return Xml::openElement( 'form', [ 'method' => 'get', 'action' => wfScript() ] ) .
                        Xml::openElement( 'fieldset' ) .
                        Xml::element( 'legend', [], $this->msg( 'protectedpages' )->text() ) .
                        Html::hidden( 'title', $title->getPrefixedDBkey() ) . "\n" .
                        $this->getNamespaceMenu( $namespace ) . "\n" .
                        $this->getTypeMenu( $type ) . "\n" .
                        $this->getLevelMenu( $level ) . "\n" .
                        "<br />\n" .
                        $this->getExpiryCheck( $indefOnly ) . "\n" .
                        $this->getCascadeCheck( $cascadeOnly ) . "\n" .
                        $this->getRedirectCheck( $noRedirect ) . "\n" .
                        "<br />\n" .
                        $this->getSizeLimit( $sizetype, $size ) . "\n" .
                        Xml::submitButton( $this->msg( 'protectedpages-submit' )->text() ) . "\n" .
                        Xml::closeElement( 'fieldset' ) .
                        Xml::closeElement( 'form' );
        }

        /**
         * Prepare the namespace filter drop-down; standard namespace
         * selector, sans the MediaWiki namespace
         *
         * @param string|null $namespace Pre-select namespace
         * @return string
         */
        protected function getNamespaceMenu( $namespace = null ) {
                return Html::rawElement( 'span', [ 'class' => 'mw-input-with-label' ],
                        Html::namespaceSelector(
                                [
                                        'selected' => $namespace,
                                        'all' => '',
                                        'label' => $this->msg( 'namespace' )->text()
                                ], [
                                        'name' => 'namespace',
                                        'id' => 'namespace',
                                        'class' => 'namespaceselector',
                                ]
                        )
                );
        }

        /**
         * @param bool $indefOnly
         * @return string Formatted HTML
         */
        protected function getExpiryCheck( $indefOnly ) {
                return '<span class="mw-input-with-label">' . Xml::checkLabel(
                        $this->msg( 'protectedpages-indef' )->text(),
                        'indefonly',
                        'indefonly',
                        $indefOnly
                ) . "</span>\n";
        }

        /**
         * @param bool $cascadeOnly
         * @return string Formatted HTML
         */
        protected function getCascadeCheck( $cascadeOnly ) {
                return '<span class="mw-input-with-label">' . Xml::checkLabel(
                        $this->msg( 'protectedpages-cascade' )->text(),
                        'cascadeonly',
                        'cascadeonly',
                        $cascadeOnly
                ) . "</span>\n";
        }

        /**
         * @param bool $noRedirect
         * @return string Formatted HTML
         */
        protected function getRedirectCheck( $noRedirect ) {
                return '<span class="mw-input-with-label">' . Xml::checkLabel(
                        $this->msg( 'protectedpages-noredirect' )->text(),
                        'noredirect',
                        'noredirect',
                        $noRedirect
                ) . "</span>\n";
        }

        /**
         * @param string $sizetype "min" or "max"
         * @param mixed $size
         * @return string Formatted HTML
         */
        protected function getSizeLimit( $sizetype, $size ) {
                $max = $sizetype === 'max';

                return '<span class="mw-input-with-label">' . Xml::radioLabel(
                        $this->msg( 'minimum-size' )->text(),
                        'sizetype',
                        'min',
                        'wpmin',
                        !$max
                ) .
                        ' ' .
                        Xml::radioLabel(
                                $this->msg( 'maximum-size' )->text(),
                                'sizetype',
                                'max',
                                'wpmax',
                                $max
                        ) .
                        ' ' .
                        Xml::input( 'size', 9, $size, [ 'id' => 'wpsize' ] ) .
                        ' ' .
                        Xml::label( $this->msg( 'pagesize' )->text(), 'wpsize' ) . "</span>\n";
        }

        /**
         * Creates the input label of the restriction type
         * @param string $pr_type Protection type
         * @return string Formatted HTML
         */
        protected function getTypeMenu( $pr_type ) {
                $m = []; // Temporary array
                $options = [];

                // First pass to load the log names
                foreach ( Title::getFilteredRestrictionTypes( true ) as $type ) {
                        // Messages: restriction-edit, restriction-move, restriction-create, restriction-upload
                        $text = $this->msg( "restriction-$type" )->text();
                        $m[$text] = $type;
                }

                // Third pass generates sorted XHTML content
                foreach ( $m as $text => $type ) {
                        $selected = ( $type == $pr_type );
                        $options[] = Xml::option( $text, $type, $selected ) . "\n";
                }

                return '<span class="mw-input-with-label">' .
                        Xml::label( $this->msg( 'restriction-type' )->text(), $this->IdType ) . ' ' .
                        Xml::tags( 'select',
                                [ 'id' => $this->IdType, 'name' => $this->IdType ],
                                implode( "\n", $options ) ) . "</span>";
        }

        /**
         * Creates the input label of the restriction level
         * @param string $pr_level Protection level
         * @return string Formatted HTML
         */
        protected function getLevelMenu( $pr_level ) {
                // Temporary array
                $m = [ $this->msg( 'restriction-level-all' )->text() => 0 ];
                $options = [];

                // First pass to load the log names
                foreach ( $this->getConfig()->get( 'RestrictionLevels' ) as $type ) {
                        // Messages used can be 'restriction-level-sysop' and 'restriction-level-autoconfirmed'
                        if ( $type != '' && $type != '*' ) {
                                $text = $this->msg( "restriction-level-$type" )->text();
                                $m[$text] = $type;
                        }
                }

                // Third pass generates sorted XHTML content
                foreach ( $m as $text => $type ) {
                        $selected = ( $type == $pr_level );
                        $options[] = Xml::option( $text, $type, $selected );
                }

                return '<span class="mw-input-with-label">' .
                        Xml::label( $this->msg( 'restriction-level' )->text(), $this->IdLevel ) . ' ' .
                        Xml::tags( 'select',
                                [ 'id' => $this->IdLevel, 'name' => $this->IdLevel ],
                                implode( "\n", $options ) ) . "</span>";
        }

        protected function getGroupName() {
                return 'maintenance';
        }
}

/**
 * @todo document
 * @ingroup Pager
 */
class ProtectedPagesPager extends TablePager {
        public $mForm, $mConds;
        private $type, $level, $namespace, $sizetype, $size, $indefonly, $cascadeonly, $noredirect;

        function __construct( $form, $conds = [], $type, $level, $namespace,
                $sizetype = '', $size = 0, $indefonly = false, $cascadeonly = false, $noredirect = false
        ) {
                $this->mForm = $form;
                $this->mConds = $conds;
                $this->type = ( $type ) ? $type : 'edit';
                $this->level = $level;
                $this->namespace = $namespace;
                $this->sizetype = $sizetype;
                $this->size = intval( $size );
                $this->indefonly = (bool)$indefonly;
                $this->cascadeonly = (bool)$cascadeonly;
                $this->noredirect = (bool)$noredirect;
                parent::__construct( $form->getContext() );
        }

        function preprocessResults( $result ) {
                # Do a link batch query
                $lb = new LinkBatch;
                $userids = [];

                foreach ( $result as $row ) {
                        $lb->add( $row->page_namespace, $row->page_title );
                        // field is nullable, maybe null on old protections
                        if ( $row->log_user !== null ) {
                                $userids[] = $row->log_user;
                        }
                }

                // fill LinkBatch with user page and user talk
                if ( count( $userids ) ) {
                        $userCache = UserCache::singleton();
                        $userCache->doQuery( $userids, [], __METHOD__ );
                        foreach ( $userids as $userid ) {
                                $name = $userCache->getProp( $userid, 'name' );
                                if ( $name !== false ) {
                                        $lb->add( NS_USER, $name );
                                        $lb->add( NS_USER_TALK, $name );
                                }
                        }
                }

                $lb->execute();
        }

        function getFieldNames() {
                static $headers = null;

                if ( $headers == [] ) {
                        $headers = [
                                'log_timestamp' => 'protectedpages-timestamp',
                                'pr_page' => 'protectedpages-page',
                                'pr_expiry' => 'protectedpages-expiry',
                                'log_user' => 'protectedpages-performer',
                                'pr_params' => 'protectedpages-params',
                                'log_comment' => 'protectedpages-reason',
                        ];
                        foreach ( $headers as $key => $val ) {
                                $headers[$key] = $this->msg( $val )->text();
                        }
                }

                return $headers;
        }

        /**
         * @param string $field
         * @param string $value
         * @return string HTML
         * @throws MWException
         */
        function formatValue( $field, $value ) {
                /** @var $row object */
                $row = $this->mCurrentRow;

                $formatted = '';

                switch ( $field ) {
                        case 'log_timestamp':
                                // when timestamp is null, this is a old protection row
                                if ( $value === null ) {
                                        $formatted = Html::rawElement(
                                                'span',
                                                [ 'class' => 'mw-protectedpages-unknown' ],
                                                $this->msg( 'protectedpages-unknown-timestamp' )->escaped()
                                        );
                                } else {
                                        $formatted = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
                                                $value, $this->getUser() ) );
                                }
                                break;

                        case 'pr_page':
                                $title = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
                                if ( !$title ) {
                                        $formatted = Html::element(
                                                'span',
                                                [ 'class' => 'mw-invalidtitle' ],
                                                Linker::getInvalidTitleDescription(
                                                        $this->getContext(),
                                                        $row->page_namespace,
                                                        $row->page_title
                                                )
                                        );
                                } else {
                                        $formatted = Linker::link( $title );
                                }
                                if ( !is_null( $row->page_len ) ) {
                                        $formatted .= $this->getLanguage()->getDirMark() .
                                                ' ' . Html::rawElement(
                                                'span',
                                                [ 'class' => 'mw-protectedpages-length' ],
                                                Linker::formatRevisionSize( $row->page_len )
                                        );
                                }
                                break;

                        case 'pr_expiry':
                                $formatted = htmlspecialchars( $this->getLanguage()->formatExpiry(
                                        $value, /* User preference timezone */true ) );
                                $title = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
                                if ( $this->getUser()->isAllowed( 'protect' ) && $title ) {
                                        $changeProtection = Linker::linkKnown(
                                                $title,
                                                $this->msg( 'protect_change' )->escaped(),
                                                [],
                                                [ 'action' => 'unprotect' ]
                                        );
                                        $formatted .= ' ' . Html::rawElement(
                                                'span',
                                                [ 'class' => 'mw-protectedpages-actions' ],
                                                $this->msg( 'parentheses' )->rawParams( $changeProtection )->escaped()
                                        );
                                }
                                break;

                        case 'log_user':
                                // when timestamp is null, this is a old protection row
                                if ( $row->log_timestamp === null ) {
                                        $formatted = Html::rawElement(
                                                'span',
                                                [ 'class' => 'mw-protectedpages-unknown' ],
                                                $this->msg( 'protectedpages-unknown-performer' )->escaped()
                                        );
                                } else {
                                        $username = UserCache::singleton()->getProp( $value, 'name' );
                                        if ( LogEventsList::userCanBitfield(
                                                $row->log_deleted,
                                                LogPage::DELETED_USER,
                                                $this->getUser()
                                        ) ) {
                                                if ( $username === false ) {
                                                        $formatted = htmlspecialchars( $value );
                                                } else {
                                                        $formatted = Linker::userLink( $value, $username )
                                                                . Linker::userToolLinks( $value, $username );
                                                }
                                        } else {
                                                $formatted = $this->msg( 'rev-deleted-user' )->escaped();
                                        }
                                        if ( LogEventsList::isDeleted( $row, LogPage::DELETED_USER ) ) {
                                                $formatted = '<span class="history-deleted">' . $formatted . '</span>';
                                        }
                                }
                                break;

                        case 'pr_params':
                                $params = [];
                                // Messages: restriction-level-sysop, restriction-level-autoconfirmed
                                $params[] = $this->msg( 'restriction-level-' . $row->pr_level )->escaped();
                                if ( $row->pr_cascade ) {
                                        $params[] = $this->msg( 'protect-summary-cascade' )->escaped();
                                }
                                $formatted = $this->getLanguage()->commaList( $params );
                                break;

                        case 'log_comment':
                                // when timestamp is null, this is an old protection row
                                if ( $row->log_timestamp === null ) {
                                        $formatted = Html::rawElement(
                                                'span',
                                                [ 'class' => 'mw-protectedpages-unknown' ],
                                                $this->msg( 'protectedpages-unknown-reason' )->escaped()
                                        );
                                } else {
                                        if ( LogEventsList::userCanBitfield(
                                                $row->log_deleted,
                                                LogPage::DELETED_COMMENT,
                                                $this->getUser()
                                        ) ) {
                                                $formatted = Linker::formatComment( $value !== null ? $value : '' );
                                        } else {
                                                $formatted = $this->msg( 'rev-deleted-comment' )->escaped();
                                        }
                                        if ( LogEventsList::isDeleted( $row, LogPage::DELETED_COMMENT ) ) {
                                                $formatted = '<span class="history-deleted">' . $formatted . '</span>';
                                        }
                                }
                                break;

                        default:
                                throw new MWException( "Unknown field '$field'" );
                }

                return $formatted;
        }

        function getQueryInfo() {
                $conds = $this->mConds;
                $conds[] = 'pr_expiry > ' . $this->mDb->addQuotes( $this->mDb->timestamp() ) .
                        ' OR pr_expiry IS NULL';
                $conds[] = 'page_id=pr_page';
                $conds[] = 'pr_type=' . $this->mDb->addQuotes( $this->type );

                if ( $this->sizetype == 'min' ) {
                        $conds[] = 'page_len>=' . $this->size;
                } elseif ( $this->sizetype == 'max' ) {
                        $conds[] = 'page_len<=' . $this->size;
                }

                if ( $this->indefonly ) {
                        $infinity = $this->mDb->addQuotes( $this->mDb->getInfinity() );
                        $conds[] = "pr_expiry = $infinity OR pr_expiry IS NULL";
                }
                if ( $this->cascadeonly ) {
                        $conds[] = 'pr_cascade = 1';
                }
                if ( $this->noredirect ) {
                        $conds[] = 'page_is_redirect = 0';
                }

                if ( $this->level ) {
                        $conds[] = 'pr_level=' . $this->mDb->addQuotes( $this->level );
                }
                if ( !is_null( $this->namespace ) ) {
                        $conds[] = 'page_namespace=' . $this->mDb->addQuotes( $this->namespace );
                }

                return [
                        'tables' => [ 'page', 'page_restrictions', 'log_search', 'logging' ],
                        'fields' => [
                                'pr_id',
                                'page_namespace',
                                'page_title',
                                'page_len',
                                'pr_type',
                                'pr_level',
                                'pr_expiry',
                                'pr_cascade',
                                'log_timestamp',
                                'log_user',
                                'log_comment',
                                'log_deleted',
                        ],
                        'conds' => $conds,
                        'join_conds' => [
                                'log_search' => [
                                        'LEFT JOIN', [
                                                'ls_field' => 'pr_id', 'ls_value = pr_id'
                                        ]
                                ],
                                'logging' => [
                                        'LEFT JOIN', [
                                                'ls_log_id = log_id'
                                        ]
                                ]
                        ]
                ];
        }

        protected function getTableClass() {
                return parent::getTableClass() . ' mw-protectedpages';
        }

        function getIndexField() {
                return 'pr_id';
        }

        function getDefaultSort() {
                return 'pr_id';
        }

        function isFieldSortable( $field ) {
                // no index for sorting exists
                return false;
        }
}