maintenance/update.php

   1 #!/usr/bin/env php
   2 <?php
   3 /**
   4  * Run all updaters.
   5  *
   6  * This is used when the database schema is modified and we need to apply patches.
   7  * It is kept compatible with php 4 parsing so that it can give out a meaningful error.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  * @todo document
  26  * @ingroup Maintenance
  27  */
  28
  29 if ( !function_exists( 'version_compare' ) || ( version_compare( phpversion(), '5.3.2' ) < 0 ) ) {
  30         require dirname( __FILE__ ) . '/../includes/PHPVersionError.php';
  31         wfPHPVersionError( 'cli' );
  32 }
  33
  34 $wgUseMasterForMaintenance = true;
  35 require_once __DIR__ . '/Maintenance.php';
  36
  37 /**
  38  * Maintenance script to run database schema updates.
  39  *
  40  * @ingroup Maintenance
  41  */
  42 class UpdateMediaWiki extends Maintenance {
  43         function __construct() {
  44                 parent::__construct();
  45                 $this->mDescription = "MediaWiki database updater";
  46                 $this->addOption( 'skip-compat-checks', 'Skips compatibility checks, mostly for developers' );
  47                 $this->addOption( 'quick', 'Skip 5 second countdown before starting' );
  48                 $this->addOption( 'doshared', 'Also update shared tables' );
  49                 $this->addOption( 'nopurge', 'Do not purge the objectcache table after updates' );
  50                 $this->addOption( 'noschema', 'Only do the updates that are not done during schema updates' );
  51                 $this->addOption(
  52                         'schema',
  53                         'Output SQL to do the schema updates instead of doing them. Works '
  54                                 . 'even when $wgAllowSchemaUpdates is false',
  55                         false,
  56                         true
  57                 );
  58                 $this->addOption( 'force', 'Override when $wgAllowSchemaUpdates disables this script' );
  59         }
  60
  61         function getDbType() {
  62                 /* If we used the class constant PHP4 would give a parser error here */
  63                 return 2; /* Maintenance::DB_ADMIN */
  64         }
  65
  66         function compatChecks() {
  67                 // Avoid syntax error in PHP4
  68                 $minimumPcreVersion = constant( 'Installer::MINIMUM_PCRE_VERSION' );
  69
  70                 list( $pcreVersion ) = explode( ' ', PCRE_VERSION, 2 );
  71                 if ( version_compare( $pcreVersion, $minimumPcreVersion, '<' ) ) {
  72                         $this->error(
  73                                 "PCRE $minimumPcreVersion or later is required.\n" .
  74                                 "Your PHP binary is linked with PCRE $pcreVersion.\n\n" .
  75                                 "More information:\n" .
  76                                 "https://www.mediawiki.org/wiki/Manual:Errors_and_symptoms/PCRE\n\n" .
  77                                 "ABORTING.\n",
  78                                 true );
  79                 }
  80
  81                 $test = new PhpXmlBugTester();
  82                 if ( !$test->ok ) {
  83                         $this->error(
  84                                 "Your system has a combination of PHP and libxml2 versions that is buggy\n" .
  85                                 "and can cause hidden data corruption in MediaWiki and other web apps.\n" .
  86                                 "Upgrade to libxml2 2.7.3 or later.\n" .
  87                                 "ABORTING (see https://bugs.php.net/bug.php?id=45996).\n",
  88                                 true );
  89                 }
  90         }
  91
  92         function execute() {
  93                 global $wgVersion, $wgLang, $wgAllowSchemaUpdates;
  94
  95                 if ( !$wgAllowSchemaUpdates
  96                         && !( $this->hasOption( 'force' )
  97                                 || $this->hasOption( 'schema' )
  98                                 || $this->hasOption( 'noschema' ) )
  99                 ) {
 100                         $this->error( "Do not run update.php on this wiki. If you're seeing this you should\n"
 101                                 . "probably ask for some help in performing your schema updates or use\n"
 102                                 . "the --noschema and --schema options to get an SQL file for someone\n"
 103                                 . "else to inspect and run.\n\n"
 104                                 . "If you know what you are doing, you can continue with --force\n", true );
 105                 }
 106
 107                 $this->fileHandle = null;
 108                 if ( substr( $this->getOption( 'schema' ), 0, 2 ) === "--" ) {
 109                         $this->error( "The --schema option requires a file as an argument.\n", true );
 110                 } elseif ( $this->hasOption( 'schema' ) ) {
 111                         $file = $this->getOption( 'schema' );
 112                         $this->fileHandle = fopen( $file, "w" );
 113                         if ( $this->fileHandle === false ) {
 114                                 $err = error_get_last();
 115                                 $this->error( "Problem opening the schema file for writing: $file\n\t{$err['message']}", true );
 116                         }
 117                 }
 118
 119                 $wgLang = Language::factory( 'en' );
 120
 121                 define( 'MW_UPDATER', true );
 122
 123                 $this->output( "MediaWiki {$wgVersion} Updater\n\n" );
 124
 125                 wfWaitForSlaves( 5 ); // let's not kill databases, shall we? ;) --tor
 126
 127                 if ( !$this->hasOption( 'skip-compat-checks' ) ) {
 128                         $this->compatChecks();
 129                 } else {
 130                         $this->output( "Skipping compatibility checks, proceed at your own risk (Ctrl+C to abort)\n" );
 131                         wfCountdown( 5 );
 132                 }
 133
 134                 # Attempt to connect to the database as a privileged user
 135                 # This will vomit up an error if there are permissions problems
 136                 $db = wfGetDB( DB_MASTER );
 137
 138                 $this->output( "Going to run database updates for " . wfWikiID() . "\n" );
 139                 if ( $db->getType() === 'sqlite' ) {
 140                         $this->output( "Using SQLite file: '{$db->mDatabaseFile}'\n" );
 141                 }
 142                 $this->output( "Depending on the size of your database this may take a while!\n" );
 143
 144                 if ( !$this->hasOption( 'quick' ) ) {
 145                         $this->output( "Abort with control-c in the next five seconds "
 146                                 . "(skip this countdown with --quick) ... " );
 147                         wfCountDown( 5 );
 148                 }
 149
 150                 $time1 = new MWTimestamp();
 151
 152                 $shared = $this->hasOption( 'doshared' );
 153
 154                 $updates = array( 'core', 'extensions' );
 155                 if ( !$this->hasOption( 'schema' ) ) {
 156                         if ( $this->hasOption( 'noschema' ) ) {
 157                                 $updates[] = 'noschema';
 158                         }
 159                         $updates[] = 'stats';
 160                 }
 161
 162                 $updater = DatabaseUpdater::newForDb( $db, $shared, $this );
 163                 $updater->doUpdates( $updates );
 164
 165                 foreach ( $updater->getPostDatabaseUpdateMaintenance() as $maint ) {
 166                         $child = $this->runChild( $maint );
 167
 168                         // LoggedUpdateMaintenance is checking the updatelog itself
 169                         $isLoggedUpdate = is_a( $child, 'LoggedUpdateMaintenance' );
 170
 171                         if ( !$isLoggedUpdate && $updater->updateRowExists( $maint ) ) {
 172                                 continue;
 173                         }
 174
 175                         $child->execute();
 176                         if ( !$isLoggedUpdate ) {
 177                                 $updater->insertUpdateRow( $maint );
 178                         }
 179                 }
 180
 181                 if ( !$this->hasOption( 'nopurge' ) ) {
 182                         $updater->purgeCache();
 183                 }
 184                 $time2 = new MWTimestamp();
 185
 186                 $timeDiff = $time2->diff( $time1 );
 187                 $this->output( "\nDone in " . $timeDiff->format( "%i:%S" ) . ".\n" );
 188         }
 189
 190         function afterFinalSetup() {
 191                 global $wgLocalisationCacheConf;
 192
 193                 # Don't try to access the database
 194                 # This needs to be disabled early since extensions will try to use the l10n
 195                 # cache from $wgExtensionFunctions (bug 20471)
 196                 $wgLocalisationCacheConf = array(
 197                         'class' => 'LocalisationCache',
 198                         'storeClass' => 'LCStoreNull',
 199                         'storeDirectory' => false,
 200                         'manualRecache' => false,
 201                 );
 202         }
 203 }
 204
 205 $maintClass = 'UpdateMediaWiki';
 206 require_once RUN_MAINTENANCE_IF_MAIN;