maintenance/update.php

   1 <?php
   2 /**
   3  * Run all updaters.
   4  *
   5  * This is used when the database schema is modified and we need to apply patches.
   6  * It is kept compatible with php 4 parsing so that it can give out a meaningful error.
   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  * @todo document
  25  * @ingroup Maintenance
  26  */
  27
  28 if ( !function_exists( 'version_compare' ) || ( version_compare( phpversion(), '5.3.2' ) < 0 ) ) {
  29         require dirname( __FILE__ ) . '/../includes/PHPVersionError.php';
  30         wfPHPVersionError( 'cli' );
  31 }
  32
  33 $wgUseMasterForMaintenance = true;
  34 require_once __DIR__ . '/Maintenance.php';
  35
  36 /**
  37  * Maintenance script to run database schema updates.
  38  *
  39  * @ingroup Maintenance
  40  */
  41 class UpdateMediaWiki extends Maintenance {
  42         function __construct() {
  43                 parent::__construct();
  44                 $this->mDescription = "MediaWiki database updater";
  45                 $this->addOption( 'skip-compat-checks', 'Skips compatibility checks, mostly for developers' );
  46                 $this->addOption( 'quick', 'Skip 5 second countdown before starting' );
  47                 $this->addOption( 'doshared', 'Also update shared tables' );
  48                 $this->addOption( 'nopurge', 'Do not purge the objectcache table after updates' );
  49                 $this->addOption( 'noschema', 'Only do the updates that are not done during schema updates' );
  50                 $this->addOption(
  51                         'schema',
  52                         'Output SQL to do the schema updates instead of doing them. Works '
  53                                 . 'even when $wgAllowSchemaUpdates is false',
  54                         false,
  55                         true
  56                 );
  57                 $this->addOption( 'force', 'Override when $wgAllowSchemaUpdates disables this script' );
  58         }
  59
  60         function getDbType() {
  61                 /* If we used the class constant PHP4 would give a parser error here */
  62                 return 2; /* Maintenance::DB_ADMIN */
  63         }
  64
  65         function compatChecks() {
  66                 // Avoid syntax error in PHP4
  67                 $minimumPcreVersion = constant( 'Installer::MINIMUM_PCRE_VERSION' );
  68
  69                 list( $pcreVersion ) = explode( ' ', PCRE_VERSION, 2 );
  70                 if ( version_compare( $pcreVersion, $minimumPcreVersion, '<' ) ) {
  71                         $this->error(
  72                                 "PCRE $minimumPcreVersion or later is required.\n" .
  73                                 "Your PHP binary is linked with PCRE $pcreVersion.\n\n" .
  74                                 "More information:\n" .
  75                                 "https://www.mediawiki.org/wiki/Manual:Errors_and_symptoms/PCRE\n\n" .
  76                                 "ABORTING.\n",
  77                                 true );
  78                 }
  79
  80                 $test = new PhpXmlBugTester();
  81                 if ( !$test->ok ) {
  82                         $this->error(
  83                                 "Your system has a combination of PHP and libxml2 versions that is buggy\n" .
  84                                 "and can cause hidden data corruption in MediaWiki and other web apps.\n" .
  85                                 "Upgrade to libxml2 2.7.3 or later.\n" .
  86                                 "ABORTING (see https://bugs.php.net/bug.php?id=45996).\n",
  87                                 true );
  88                 }
  89         }
  90
  91         function execute() {
  92                 global $wgVersion, $wgLang, $wgAllowSchemaUpdates;
  93
  94                 if ( !$wgAllowSchemaUpdates
  95                         && !( $this->hasOption( 'force' )
  96                                 || $this->hasOption( 'schema' )
  97                                 || $this->hasOption( 'noschema' ) )
  98                 ) {
  99                         $this->error( "Do not run update.php on this wiki. If you're seeing this you should\n"
 100                                 . "probably ask for some help in performing your schema updates or use\n"
 101                                 . "the --noschema and --schema options to get an SQL file for someone\n"
 102                                 . "else to inspect and run.\n\n"
 103                                 . "If you know what you are doing, you can continue with --force\n", true );
 104                 }
 105
 106                 $this->fileHandle = null;
 107                 if ( substr( $this->getOption( 'schema' ), 0, 2 ) === "--" ) {
 108                         $this->error( "The --schema option requires a file as an argument.\n", true );
 109                 } elseif ( $this->hasOption( 'schema' ) ) {
 110                         $file = $this->getOption( 'schema' );
 111                         $this->fileHandle = fopen( $file, "w" );
 112                         if ( $this->fileHandle === false ) {
 113                                 $err = error_get_last();
 114                                 $this->error( "Problem opening the schema file for writing: $file\n\t{$err['message']}", true );
 115                         }
 116                 }
 117
 118                 $wgLang = Language::factory( 'en' );
 119
 120                 define( 'MW_UPDATER', true );
 121
 122                 $this->output( "MediaWiki {$wgVersion} Updater\n\n" );
 123
 124                 wfWaitForSlaves( 5 ); // let's not kill databases, shall we? ;) --tor
 125
 126                 if ( !$this->hasOption( 'skip-compat-checks' ) ) {
 127                         $this->compatChecks();
 128                 } else {
 129                         $this->output( "Skipping compatibility checks, proceed at your own risk (Ctrl+C to abort)\n" );
 130                         wfCountdown( 5 );
 131                 }
 132
 133                 # Attempt to connect to the database as a privileged user
 134                 # This will vomit up an error if there are permissions problems
 135                 $db = wfGetDB( DB_MASTER );
 136
 137                 $this->output( "Going to run database updates for " . wfWikiID() . "\n" );
 138                 if ( $db->getType() === 'sqlite' ) {
 139                         $this->output( "Using SQLite file: '{$db->mDatabaseFile}'\n" );
 140                 }
 141                 $this->output( "Depending on the size of your database this may take a while!\n" );
 142
 143                 if ( !$this->hasOption( 'quick' ) ) {
 144                         $this->output( "Abort with control-c in the next five seconds "
 145                                 . "(skip this countdown with --quick) ... " );
 146                         wfCountDown( 5 );
 147                 }
 148
 149                 $time1 = new MWTimestamp();
 150
 151                 $shared = $this->hasOption( 'doshared' );
 152
 153                 $updates = array( 'core', 'extensions' );
 154                 if ( !$this->hasOption( 'schema' ) ) {
 155                         if ( $this->hasOption( 'noschema' ) ) {
 156                                 $updates[] = 'noschema';
 157                         }
 158                         $updates[] = 'stats';
 159                 }
 160
 161                 $updater = DatabaseUpdater::newForDb( $db, $shared, $this );
 162                 $updater->doUpdates( $updates );
 163
 164                 foreach ( $updater->getPostDatabaseUpdateMaintenance() as $maint ) {
 165                         $child = $this->runChild( $maint );
 166
 167                         // LoggedUpdateMaintenance is checking the updatelog itself
 168                         $isLoggedUpdate = is_a( $child, 'LoggedUpdateMaintenance' );
 169
 170                         if ( !$isLoggedUpdate && $updater->updateRowExists( $maint ) ) {
 171                                 continue;
 172                         }
 173
 174                         $child->execute();
 175                         if ( !$isLoggedUpdate ) {
 176                                 $updater->insertUpdateRow( $maint );
 177                         }
 178                 }
 179
 180                 if ( !$this->hasOption( 'nopurge' ) ) {
 181                         $updater->purgeCache();
 182                 }
 183                 $time2 = new MWTimestamp();
 184
 185                 $timeDiff = $time2->diff( $time1 );
 186                 $this->output( "\nDone in " . $timeDiff->format( "%i:%S" ) . ".\n" );
 187         }
 188
 189         function afterFinalSetup() {
 190                 global $wgLocalisationCacheConf;
 191
 192                 # Don't try to access the database
 193                 # This needs to be disabled early since extensions will try to use the l10n
 194                 # cache from $wgExtensionFunctions (bug 20471)
 195                 $wgLocalisationCacheConf = array(
 196                         'class' => 'LocalisationCache',
 197                         'storeClass' => 'LCStoreNull',
 198                         'storeDirectory' => false,
 199                         'manualRecache' => false,
 200                 );
 201         }
 202 }
 203
 204 $maintClass = 'UpdateMediaWiki';
 205 require_once RUN_MAINTENANCE_IF_MAIN;