Expose $wgMaxArticleSize in siteinfo query api

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

<?php
/**
 * Implements Special:Log
 *
 * Copyright © 2008 Aaron Schulz
 *
 * 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 log entries
 *
 * @ingroup SpecialPage
 */
class SpecialLog extends SpecialPage {
        public function __construct() {
                parent::__construct( 'Log' );
        }

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

                $opts = new FormOptions;
                $opts->add( 'type', '' );
                $opts->add( 'user', '' );
                $opts->add( 'page', '' );
                $opts->add( 'pattern', false );
                $opts->add( 'year', null, FormOptions::INTNULL );
                $opts->add( 'month', null, FormOptions::INTNULL );
                $opts->add( 'tagfilter', '' );
                $opts->add( 'offset', '' );
                $opts->add( 'dir', '' );
                $opts->add( 'offender', '' );
                $opts->add( 'subtype', '' );

                // Set values
                $opts->fetchValuesFromRequest( $this->getRequest() );
                if ( $par !== null ) {
                        $this->parseParams( $opts, (string)$par );
                }

                # Don't let the user get stuck with a certain date
                if ( $opts->getValue( 'offset' ) || $opts->getValue( 'dir' ) == 'prev' ) {
                        $opts->setValue( 'year', '' );
                        $opts->setValue( 'month', '' );
                }

                // If the user doesn't have the right permission to view the specific
                // log type, throw a PermissionsError
                // If the log type is invalid, just show all public logs
                $logRestrictions = $this->getConfig()->get( 'LogRestrictions' );
                $type = $opts->getValue( 'type' );
                if ( !LogPage::isLogType( $type ) ) {
                        $opts->setValue( 'type', '' );
                } elseif ( isset( $logRestrictions[$type] )
                        && !$this->getUser()->isAllowed( $logRestrictions[$type] )
                ) {
                        throw new PermissionsError( $logRestrictions[$type] );
                }

                # Handle type-specific inputs
                $qc = [];
                if ( $opts->getValue( 'type' ) == 'suppress' ) {
                        $offender = User::newFromName( $opts->getValue( 'offender' ), false );
                        if ( $offender && $offender->getId() > 0 ) {
                                $qc = [ 'ls_field' => 'target_author_id', 'ls_value' => $offender->getId() ];
                        } elseif ( $offender && IP::isIPAddress( $offender->getName() ) ) {
                                $qc = [ 'ls_field' => 'target_author_ip', 'ls_value' => $offender->getName() ];
                        }
                } else {
                        // Allow extensions to add relations to their search types
                        Hooks::run(
                                'SpecialLogAddLogSearchRelations',
                                [ $opts->getValue( 'type' ), $this->getRequest(), &$qc ]
                        );
                }

                # Some log types are only for a 'User:' title but we might have been given
                # only the username instead of the full title 'User:username'. This part try
                # to lookup for a user by that name and eventually fix user input. See bug 1697.
                if ( in_array( $opts->getValue( 'type' ), self::getLogTypesOnUser() ) ) {
                        # ok we have a type of log which expect a user title.
                        $target = Title::newFromText( $opts->getValue( 'page' ) );
                        if ( $target && $target->getNamespace() === NS_MAIN ) {
                                # User forgot to add 'User:', we are adding it for him
                                $opts->setValue( 'page',
                                        Title::makeTitleSafe( NS_USER, $opts->getValue( 'page' ) )
                                );
                        }
                }

                $this->show( $opts, $qc );
        }

        /**
         * List log type for which the target is a user
         * Thus if the given target is in NS_MAIN we can alter it to be an NS_USER
         * Title user instead.
         *
         * @since 1.25
         * @return array
         */
        public static function getLogTypesOnUser() {
                static $types = null;
                if ( $types !== null ) {
                        return $types;
                }
                $types = [
                        'block',
                        'newusers',
                        'rights',
                ];

                Hooks::run( 'GetLogTypesOnUser', [ &$types ] );
                return $types;
        }

        /**
         * Return an array of subpages that this special page will accept.
         *
         * @return string[] subpages
         */
        public function getSubpagesForPrefixSearch() {
                $subpages = $this->getConfig()->get( 'LogTypes' );
                $subpages[] = 'all';
                sort( $subpages );
                return $subpages;
        }

        private function parseParams( FormOptions $opts, $par ) {
                # Get parameters
                $par = $par !== null ? $par : '';
                $parms = explode( '/', $par );
                $symsForAll = [ '*', 'all' ];
                if ( $parms[0] != '' &&
                        ( in_array( $par, $this->getConfig()->get( 'LogTypes' ) ) || in_array( $par, $symsForAll ) )
                ) {
                        $opts->setValue( 'type', $par );
                } elseif ( count( $parms ) == 2 ) {
                        $opts->setValue( 'type', $parms[0] );
                        $opts->setValue( 'user', $parms[1] );
                } elseif ( $par != '' ) {
                        $opts->setValue( 'user', $par );
                }
        }

        private function show( FormOptions $opts, array $extraConds ) {
                # Create a LogPager item to get the results and a LogEventsList item to format them...
                $loglist = new LogEventsList(
                        $this->getContext(),
                        null,
                        LogEventsList::USE_CHECKBOXES
                );

                $pager = new LogPager(
                        $loglist,
                        $opts->getValue( 'type' ),
                        $opts->getValue( 'user' ),
                        $opts->getValue( 'page' ),
                        $opts->getValue( 'pattern' ),
                        $extraConds,
                        $opts->getValue( 'year' ),
                        $opts->getValue( 'month' ),
                        $opts->getValue( 'tagfilter' ),
                        $opts->getValue( 'subtype' )
                );

                $this->addHeader( $opts->getValue( 'type' ) );

                # Set relevant user
                if ( $pager->getPerformer() ) {
                        $performerUser = User::newFromName( $pager->getPerformer(), false );
                        $this->getSkin()->setRelevantUser( $performerUser );
                }

                # Show form options
                $loglist->showOptions(
                        $pager->getType(),
                        $pager->getPerformer(),
                        $pager->getPage(),
                        $pager->getPattern(),
                        $pager->getYear(),
                        $pager->getMonth(),
                        $pager->getFilterParams(),
                        $pager->getTagFilter(),
                        $pager->getAction()
                );

                # Insert list
                $logBody = $pager->getBody();
                if ( $logBody ) {
                        $this->getOutput()->addHTML(
                                $pager->getNavigationBar() .
                                        $this->getActionButtons(
                                                $loglist->beginLogEventsList() .
                                                        $logBody .
                                                        $loglist->endLogEventsList()
                                        ) .
                                        $pager->getNavigationBar()
                        );
                } else {
                        $this->getOutput()->addWikiMsg( 'logempty' );
                }
        }

        private function getActionButtons( $formcontents ) {
                $user = $this->getUser();
                $canRevDelete = $user->isAllowedAll( 'deletedhistory', 'deletelogentry' );
                $showTagEditUI = ChangeTags::showTagEditingUI( $user );
                # If the user doesn't have the ability to delete log entries nor edit tags,
                # don't bother showing them the button(s).
                if ( !$canRevDelete && !$showTagEditUI ) {
                        return $formcontents;
                }

                # Show button to hide log entries and/or edit change tags
                $s = Html::openElement(
                        'form',
                        [ 'action' => wfScript(), 'id' => 'mw-log-deleterevision-submit' ]
                ) . "\n";
                $s .= Html::hidden( 'action', 'historysubmit' ) . "\n";
                $s .= Html::hidden( 'type', 'logging' ) . "\n";

                $buttons = '';
                if ( $canRevDelete ) {
                        $buttons .= Html::element(
                                'button',
                                [
                                        'type' => 'submit',
                                        'name' => 'revisiondelete',
                                        'value' => '1',
                                        'class' => "deleterevision-log-submit mw-log-deleterevision-button"
                                ],
                                $this->msg( 'showhideselectedlogentries' )->text()
                        ) . "\n";
                }
                if ( $showTagEditUI ) {
                        $buttons .= Html::element(
                                'button',
                                [
                                        'type' => 'submit',
                                        'name' => 'editchangetags',
                                        'value' => '1',
                                        'class' => "editchangetags-log-submit mw-log-editchangetags-button"
                                ],
                                $this->msg( 'log-edit-tags' )->text()
                        ) . "\n";
                }

                $buttons .= ( new ListToggle( $this->getOutput() ) )->getHTML();

                $s .= $buttons . $formcontents . $buttons;
                $s .= Html::closeElement( 'form' );

                return $s;
        }

        /**
         * Set page title and show header for this log type
         * @param string $type
         * @since 1.19
         */
        protected function addHeader( $type ) {
                $page = new LogPage( $type );
                $this->getOutput()->setPageTitle( $page->getName() );
                $this->getOutput()->addHTML( $page->getDescription()
                        ->setContext( $this->getContext() )->parseAsBlock() );
        }

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