RightsLogFormatter.php

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<?php
namespace MediaWiki\Logging;
 
use MediaWiki\Api\ApiResult;
use MediaWiki\MainConfigNames;
use MediaWiki\Message\Message;
use MediaWiki\Title\Title;
use MediaWiki\User\ExternalUserNames;
use MediaWiki\WikiMap\WikiMap;
 
class RightsLogFormatter extends LogFormatter {
    protected function getCommentWikiId() {
        // If the performer is hidden, don't attempt to resolve the source wiki
        // to avoid leaking information about the performer's origin.
        if ( !$this->canView( LogPage::DELETED_USER ) ) {
            return false;
        }
        $performerName = $this->entry->getPerformerIdentity()->getName();
        // External performers have the format "wikiId>username".
        // The wiki ID prefix indicates the wiki the log entry was
        // replicated from, and comment links should resolve against it.
        return ExternalUserNames::getPrefix( $performerName );
    }
 
    protected function makePageLink( ?Title $title = null, $parameters = [], $html = null ) {
        $userrightsInterwikiDelimiter = $this->context->getConfig()
            ->get( MainConfigNames::UserrightsInterwikiDelimiter );
 
        if ( !$this->plaintext ) {
            $text = $this->getContentLanguage()->
                ucfirst( $title->getDBkey() );
            $parts = explode( $userrightsInterwikiDelimiter, $text, 2 );
 
            if ( count( $parts ) === 2 ) {
                // @phan-suppress-next-line SecurityCheck-DoubleEscaped
                $titleLink = WikiMap::foreignUserLink(
                    $parts[1],
                    $parts[0],
                    htmlspecialchars(
                        strtr( $parts[0], '_', ' ' ) .
                        $userrightsInterwikiDelimiter .
                        $parts[1]
                    )
                );
 
                if ( $titleLink !== false ) {
                    return $titleLink;
                }
            }
        }
 
        return parent::makePageLink( $title, $parameters, $title ? $title->getText() : null );
    }
 
    protected function getMessageKey() {
        $key = parent::getMessageKey();
        $params = $this->getMessageParameters();
        if ( !isset( $params[3] ) && !isset( $params[4] ) ) {
            // Messages: logentry-rights-rights-legacy
            $key .= '-legacy';
        }
 
        return $key;
    }
 
    protected function getMessageParameters() {
        $params = parent::getMessageParameters();
 
        // Really old entries that lack old/new groups,
        // so don't try to process them
        if ( !$this->shouldProcessParams( $params ) ) {
            return $params;
        }
 
        // Groups are stored as [ name => expiry|null ]
        $oldGroups = $this->getOldGroups( $params );
        $newGroups = $this->getNewGroups( $params );
 
        // These params were used in the past, when the log message said "from: X to: Y"
        // They were kept not to break translations
        if ( count( $oldGroups ) ) {
            $params[3] = Message::rawParam( $this->formatRightsList( $oldGroups ) );
        } else {
            $params[3] = $this->msg( 'rightsnone' )->text();
        }
        if ( count( $newGroups ) ) {
            $params[4] = Message::rawParam( $this->formatRightsList( $newGroups ) );
        } else {
            $params[4] = $this->msg( 'rightsnone' )->text();
        }
 
        $performerName = $params[1];
        $userName = $this->entry->getTarget()->getText();
 
        $params[5] = $userName;
 
        $groupChanges = $this->classifyGroupChanges( $oldGroups, $newGroups );
 
        // The following messages are used here:
        // * logentry-rights-rights-granted
        // * logentry-rights-rights-revoked
        // * logentry-rights-rights-expiry-changed
        // * logentry-rights-rights-kept
        // * logentry-rights-autopromote-granted
        // * logentry-rights-autopromote-revoked
        // * logentry-rights-autopromote-expiry-changed
        // * logentry-rights-autopromote-kept
        $messagePrefix = 'logentry-rights-rights-';
        if ( $this->entry->getSubtype() === 'autopromote' ) {
            $messagePrefix = 'logentry-rights-autopromote-';
        }
 
        $params[6] = $this->formatChangesToGroups( $groupChanges, $performerName, $userName,
            $messagePrefix );
 
        return $params;
    }
 
    protected function shouldProcessParams( array $params ) {
        return isset( $params[3] ) || isset( $params[4] );
    }
 
    protected function getOldGroups( array $params ) {
        if ( !isset( $params[3] ) ) {
            return [];
        }
 
        $allParams = $this->entry->getParameters();
        return $this->joinGroupsWithExpiries( $params[3], $allParams['oldmetadata'] ?? [] );
    }
 
    protected function getNewGroups( array $params ) {
        if ( !isset( $params[4] ) ) {
            return [];
        }
 
        $allParams = $this->entry->getParameters();
        return $this->joinGroupsWithExpiries( $params[4], $allParams['newmetadata'] ?? [] );
    }
 
    protected function joinGroupsWithExpiries( $groupNames, array $metadata ) {
        $groupNames = $this->makeGroupArray( $groupNames );
        if ( !$this->plaintext && count( $groupNames ) ) {
            $this->replaceGroupsWithMemberNames( $groupNames );
        }
 
        $expiries = [];
        foreach (
            array_map( null, $groupNames, $metadata )
                as [ $groupName, $groupMetadata ]
        ) {
            if ( isset( $groupMetadata['expiry'] ) ) {
                $expiry = $groupMetadata['expiry'];
            } else {
                $expiry = null;
            }
            $expiries[$groupName] = $expiry;
        }
        return $expiries;
    }
 
    protected function replaceGroupsWithMemberNames( array &$groupNames ) {
        $lang = $this->context->getLanguage();
        $userName = $this->entry->getTarget()->getText();
        foreach ( $groupNames as &$group ) {
            $group = $lang->getGroupMemberName( $group, $userName );
        }
    }
 
    protected function classifyGroupChanges( array $oldGroups, array $newGroups ) {
        $granted = array_diff_key( $newGroups, $oldGroups );
        $revoked = array_diff_key( $oldGroups, $newGroups );
        $kept = array_intersect_key( $oldGroups, $newGroups );
 
        $expiryChanged = [];
        $noChange = [];
 
        foreach ( $kept as $group => $oldExpiry ) {
            $newExpiry = $newGroups[$group];
            if ( $oldExpiry !== $newExpiry ) {
                $expiryChanged[$group] = [ $oldExpiry, $newExpiry ];
            } else {
                $noChange[$group] = $oldExpiry;
            }
        }
 
        // These contain both group names and their expiry times
        // in case of 'expiry-changed', the times are in an array [ old, new ]
        return [
            'granted' => $granted,
            'revoked' => $revoked,
            'expiry-changed' => $expiryChanged,
            'kept' => $noChange,
        ];
    }
 
    protected function formatChangesToGroups( array $groupChanges, string $performerName,
        string $targetName, string $messagePrefix = 'logentry-rights-rights-'
    ) {
        $formattedChanges = [];
 
        foreach ( $groupChanges as $changeType => $groups ) {
            if ( !count( $groups ) ) {
                continue;
            }
 
            if ( $changeType === 'expiry-changed' ) {
                $formattedList = $this->formatRightsListExpiryChanged( $groups );
            } else {
                $formattedList = $this->formatRightsList( $groups );
            }
 
            $formattedChanges[] = $this->msg(
                $messagePrefix . $changeType,
                $formattedList,
                $performerName,
                $targetName
            );
        }
 
        $uiLanguage = $this->context->getLanguage();
        return $uiLanguage->semicolonList( $formattedChanges );
    }
 
    private function formatRightsListExpiryChanged( array $groups ): string {
        $list = [];
 
        foreach ( $groups as $group => [ $oldExpiry, $newExpiry ] ) {
            $oldExpiryFormatted = $oldExpiry ? $this->formatDate( $oldExpiry ) : false;
            $newExpiryFormatted = $newExpiry ? $this->formatDate( $newExpiry ) : false;
 
            if ( $oldExpiryFormatted && $newExpiryFormatted ) {
                // The expiration was changed
                $list[] = $this->msg( 'rightslogentry-expiry-changed' )->params(
                    $group,
                    $newExpiryFormatted['whole'],
                    $newExpiryFormatted['date'],
                    $newExpiryFormatted['time'],
                    $oldExpiryFormatted['whole'],
                    $oldExpiryFormatted['date'],
                    $oldExpiryFormatted['time']
                )->parse();
            } elseif ( $oldExpiryFormatted ) {
                // The expiration was removed
                $list[] = $this->msg( 'rightslogentry-expiry-removed' )->params(
                    $group,
                    $oldExpiryFormatted['whole'],
                    $oldExpiryFormatted['date'],
                    $oldExpiryFormatted['time']
                )->parse();
            } elseif ( $newExpiryFormatted ) {
                // The expiration was added
                $list[] = $this->msg( 'rightslogentry-expiry-set' )->params(
                    $group,
                    $newExpiryFormatted['whole'],
                    $newExpiryFormatted['date'],
                    $newExpiryFormatted['time']
                )->parse();
            } else {
                // The rights are and were permanent
                // Shouldn't happen as we process only changes to expiry time here
                $list[] = htmlspecialchars( $group );
            }
        }
 
        $uiLanguage = $this->context->getLanguage();
        return $uiLanguage->listToText( $list );
    }
 
    private function formatRightsList( array $groups ): string {
        $uiLanguage = $this->context->getLanguage();
        // separate arrays of temporary and permanent memberships
        $tempList = $permList = [];
 
        foreach ( $groups as $group => $expiry ) {
            if ( $expiry ) {
                // format the group and expiry into a friendly string
                $expiryFormatted = $this->formatDate( $expiry );
                $tempList[] = $this->msg( 'rightslogentry-temporary-group' )->params( $group,
                    $expiryFormatted['whole'], $expiryFormatted['date'], $expiryFormatted['time'] )
                    ->parse();
            } else {
                // the right does not expire; just insert the group name
                $permList[] = htmlspecialchars( $group );
            }
        }
 
        // place all temporary memberships first, to avoid the ambiguity of
        // "administrator, bureaucrat and importer (temporary, until X time)"
        return $uiLanguage->listToText( array_merge( $tempList, $permList ) );
    }
 
    private function formatDate( string $date ): array {
        $uiLanguage = $this->context->getLanguage();
        $uiUser = $this->context->getUser();
 
        return [
            'whole' => $uiLanguage->userTimeAndDate( $date, $uiUser ),
            'date' => $uiLanguage->userDate( $date, $uiUser ),
            'time' => $uiLanguage->userTime( $date, $uiUser ),
        ];
    }
 
    protected function getParametersForApi() {
        $entry = $this->entry;
        $params = $entry->getParameters();
 
        static $map = [
            '4:array:oldgroups',
            '5:array:newgroups',
            '4::oldgroups' => '4:array:oldgroups',
            '5::newgroups' => '5:array:newgroups',
        ];
        foreach ( $map as $index => $key ) {
            if ( isset( $params[$index] ) ) {
                $params[$key] = $params[$index];
                unset( $params[$index] );
            }
        }
 
        // Really old entries do not have log params, so form them from whatever info
        // we have.
        // Also walk through the parallel arrays of groups and metadata, combining each
        // metadata array with the name of the group it pertains to
        if ( isset( $params['4:array:oldgroups'] ) ) {
            $params['4:array:oldgroups'] = $this->makeGroupArray( $params['4:array:oldgroups'] );
 
            $oldmetadata =& $params['oldmetadata'];
            // unset old metadata entry to ensure metadata goes at the end of the params array
            unset( $params['oldmetadata'] );
            $params['oldmetadata'] = array_map( static function ( $index ) use ( $params, $oldmetadata ) {
                $result = [ 'group' => $params['4:array:oldgroups'][$index] ];
                if ( isset( $oldmetadata[$index] ) ) {
                    $result += $oldmetadata[$index];
                }
                $result['expiry'] = ApiResult::formatExpiry( $result['expiry'] ?? null );
 
                return $result;
            }, array_keys( $params['4:array:oldgroups'] ) );
        }
 
        if ( isset( $params['5:array:newgroups'] ) ) {
            $params['5:array:newgroups'] = $this->makeGroupArray( $params['5:array:newgroups'] );
 
            $newmetadata =& $params['newmetadata'];
            // unset old metadata entry to ensure metadata goes at the end of the params array
            unset( $params['newmetadata'] );
            $params['newmetadata'] = array_map( static function ( $index ) use ( $params, $newmetadata ) {
                $result = [ 'group' => $params['5:array:newgroups'][$index] ];
                if ( isset( $newmetadata[$index] ) ) {
                    $result += $newmetadata[$index];
                }
                $result['expiry'] = ApiResult::formatExpiry( $result['expiry'] ?? null );
 
                return $result;
            }, array_keys( $params['5:array:newgroups'] ) );
        }
 
        return $params;
    }
 
    public function formatParametersForApi() {
        $ret = parent::formatParametersForApi();
        if ( isset( $ret['oldgroups'] ) ) {
            ApiResult::setIndexedTagName( $ret['oldgroups'], 'g' );
        }
        if ( isset( $ret['newgroups'] ) ) {
            ApiResult::setIndexedTagName( $ret['newgroups'], 'g' );
        }
        if ( isset( $ret['oldmetadata'] ) ) {
            ApiResult::setArrayType( $ret['oldmetadata'], 'array' );
            ApiResult::setIndexedTagName( $ret['oldmetadata'], 'g' );
        }
        if ( isset( $ret['newmetadata'] ) ) {
            ApiResult::setArrayType( $ret['newmetadata'], 'array' );
            ApiResult::setIndexedTagName( $ret['newmetadata'], 'g' );
        }
        return $ret;
    }
 
    private function makeGroupArray( $group ): array {
        // Migrate old group params from string to array
        // Handle weird entries caused by a bug in the BackfillInterwikiRightsLog script (T430723)
        if ( $group === '' || $group === [ '' ] ) {
            $group = [];
        } elseif ( is_string( $group ) ) {
            $group = array_map( 'trim', explode( ',', $group ) );
        }
        return $group;
    }
}
 
class_alias( RightsLogFormatter::class, 'RightsLogFormatter' );