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| 1 | <?php |
| 2 | /** |
| 3 | * Makes the required database updates for Special:ProtectedPages |
| 4 | * to show all protected pages, even ones before the page restrictions |
| 5 | * schema change. All remaining page_restriction column values are moved |
| 6 | * to the new table. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | * @ingroup Maintenance |
| 25 | */ |
| 26 | |
| 27 | require_once __DIR__ . '/Maintenance.php'; |
| 28 | |
| 29 | /** |
| 30 | * Maintenance script that updates page_restrictions table from |
| 31 | * old page_restriction column. |
| 32 | * |
| 33 | * @ingroup Maintenance |
| 34 | */ |
| 35 | class UpdateRestrictions extends Maintenance { |
| 36 | public function __construct() { |
| 37 | parent::__construct(); |
| 38 | $this->addDescription( 'Updates page_restrictions table from old page_restriction column' ); |
| 39 | $this->setBatchSize( 1000 ); |
| 40 | } |
| 41 | |
| 42 | public function execute() { |
| 43 | $dbw = $this->getDB( DB_PRIMARY ); |
| 44 | $batchSize = $this->getBatchSize(); |
| 45 | |
| 46 | if ( !$dbw->tableExists( 'page_restrictions', __METHOD__ ) ) { |
| 47 | $this->fatalError( "page_restrictions table does not exist" ); |
| 48 | } |
| 49 | |
| 50 | if ( !$dbw->fieldExists( 'page', 'page_restrictions' ) ) { |
| 51 | $this->output( "Migration is not needed.\n" ); |
| 52 | return true; |
| 53 | } |
| 54 | |
| 55 | $encodedExpiry = $dbw->getInfinity(); |
| 56 | |
| 57 | $maxPageId = $dbw->newSelectQueryBuilder() |
| 58 | ->select( 'MAX(page_id)' ) |
| 59 | ->from( 'page' ) |
| 60 | ->caller( __METHOD__ )->fetchField(); |
| 61 | $escapedEmptyBlobValue = $dbw->addQuotes( '' ); |
| 62 | |
| 63 | $batchMinPageId = 0; |
| 64 | |
| 65 | do { |
| 66 | $batchMaxPageId = $batchMinPageId + $batchSize; |
| 67 | |
| 68 | $this->output( "...processing page IDs from $batchMinPageId to $batchMaxPageId.\n" ); |
| 69 | |
| 70 | $res = $dbw->newSelectQueryBuilder() |
| 71 | ->select( [ 'page_id', 'page_restrictions' ] ) |
| 72 | ->from( 'page' ) |
| 73 | ->where( [ |
| 74 | "page_restrictions != $escapedEmptyBlobValue", |
| 75 | $dbw->expr( 'page_id', '>', $batchMinPageId ), |
| 76 | $dbw->expr( 'page_id', '<=', $batchMaxPageId ), |
| 77 | ] ) |
| 78 | ->caller( __METHOD__ )->fetchResultSet(); |
| 79 | |
| 80 | // No pages have legacy protection settings in the current batch |
| 81 | if ( !$res->numRows() ) { |
| 82 | $batchMinPageId = $batchMaxPageId; |
| 83 | continue; |
| 84 | } |
| 85 | |
| 86 | $batch = []; |
| 87 | $pageIds = []; |
| 88 | |
| 89 | foreach ( $res as $row ) { |
| 90 | $pageIds[] = $row->page_id; |
| 91 | |
| 92 | $restrictionsByAction = $this->mapLegacyRestrictionBlob( $row->page_restrictions ); |
| 93 | |
| 94 | # Update restrictions table |
| 95 | foreach ( $restrictionsByAction as $action => $restrictions ) { |
| 96 | $batch[] = [ |
| 97 | 'pr_page' => $row->page_id, |
| 98 | 'pr_type' => $action, |
| 99 | 'pr_level' => $restrictions, |
| 100 | 'pr_cascade' => 0, |
| 101 | 'pr_expiry' => $encodedExpiry |
| 102 | ]; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | $this->beginTransaction( $dbw, __METHOD__ ); |
| 107 | |
| 108 | // Insert new format protection settings for the pages in the current batch. |
| 109 | // Use INSERT IGNORE to ignore conflicts with new format settings that might exist for the page |
| 110 | $dbw->newInsertQueryBuilder() |
| 111 | ->insertInto( 'page_restrictions' ) |
| 112 | ->ignore() |
| 113 | ->rows( $batch ) |
| 114 | ->caller( __METHOD__ )->execute(); |
| 115 | |
| 116 | // Clear out the legacy page.page_restrictions blob for this batch |
| 117 | $dbw->newUpdateQueryBuilder() |
| 118 | ->update( 'page' ) |
| 119 | ->set( [ 'page_restrictions' => '' ] ) |
| 120 | ->where( [ 'page_id' => $pageIds ] ) |
| 121 | ->caller( __METHOD__ ) |
| 122 | ->execute(); |
| 123 | |
| 124 | $this->commitTransaction( $dbw, __METHOD__ ); |
| 125 | |
| 126 | $batchMinPageId = $batchMaxPageId; |
| 127 | } while ( $batchMaxPageId < $maxPageId ); |
| 128 | |
| 129 | $this->output( "...Done!\n" ); |
| 130 | return true; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Convert a legacy restriction specification from the page.page_restrictions blob to |
| 135 | * a map of action names to restriction levels. |
| 136 | * |
| 137 | * @param string $legacyBlob Legacy page.page_restrictions blob, |
| 138 | * e.g. "sysop" or "edit=sysop:move=autoconfirmed" |
| 139 | * @return string[] array of restriction levels keyed by action names |
| 140 | */ |
| 141 | private function mapLegacyRestrictionBlob( $legacyBlob ) { |
| 142 | $oldRestrictions = []; |
| 143 | |
| 144 | foreach ( explode( ':', trim( $legacyBlob ) ) as $restrict ) { |
| 145 | $temp = explode( '=', trim( $restrict ) ); |
| 146 | |
| 147 | // Treat old old format without action name as edit/move restriction |
| 148 | if ( count( $temp ) == 1 ) { |
| 149 | $level = trim( $temp[0] ); |
| 150 | |
| 151 | $oldRestrictions['edit'] = $level; |
| 152 | $oldRestrictions['move'] = $level; |
| 153 | } else { |
| 154 | $restriction = trim( $temp[1] ); |
| 155 | // Some old entries are empty |
| 156 | if ( $restriction != '' ) { |
| 157 | $oldRestrictions[$temp[0]] = $restriction; |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | return $oldRestrictions; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | $maintClass = UpdateRestrictions::class; |
| 167 | require_once RUN_MAINTENANCE_IF_MAIN; |