maintenance/updaters.inc

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup Maintenance
   5  */
   6
   7 if ( !defined( 'MEDIAWIKI' ) ) {
   8         echo "This file is not a valid entry point\n";
   9         exit( 1 );
  10 }
  11
  12 require_once 'convertLinks.inc';
  13 require_once 'userDupes.inc';
  14 # Extension updates
  15 require_once( "$IP/includes/Hooks.php" );
  16
  17 /**
  18  * @deprecated. Do not use, ever.
  19  */
  20 $wgUpdates = array();
  21
  22
  23 # For extensions only, should be populated via hooks
  24 # $wgDBtype should be checked to specifiy the proper file
  25 $wgExtNewTables = array(); // table, dir
  26 $wgExtNewFields = array(); // table, column, dir
  27 $wgExtPGNewFields = array(); // table, column, column attributes; for PostgreSQL
  28 $wgExtPGAlteredFields = array(); // table, column, new type, conversion method; for PostgreSQL
  29 $wgExtNewIndexes = array(); // table, index, dir
  30 $wgExtModifiedFields = array(); // table, index, dir
  31
  32 # Helper function: check if the given key is present in the updatelog table.
  33 # Obviously, only use this for updates that occur after the updatelog table was
  34 # created!
  35 function update_row_exists( $key ) {
  36         $dbr = wfGetDB( DB_SLAVE );
  37         $row = $dbr->selectRow(
  38                 'updatelog',
  39                 '1',
  40                 array( 'ul_key' => $key ),
  41                 __FUNCTION__
  42         );
  43         return (bool)$row;
  44 }
  45
  46 function rename_table( $from, $to, $patch ) {
  47         global $wgDatabase;
  48         if ( $wgDatabase->tableExists( $from ) ) {
  49                 if ( $wgDatabase->tableExists( $to ) ) {
  50                         wfOut( "...can't move table $from to $to, $to already exists.\n" );
  51                 } else {
  52                         wfOut( "Moving table $from to $to..." );
  53                         $wgDatabase->sourceFile( archive( $patch ) );
  54                         wfOut( "ok\n" );
  55                 }
  56         } else {
  57                 // Source table does not exist
  58                 // Renames are done before creations, so this is typical for a new installation
  59                 // Ignore silently
  60         }
  61 }
  62
  63 function add_table( $name, $patch, $fullpath = false ) {
  64         global $wgDatabase;
  65         if ( $wgDatabase->tableExists( $name ) ) {
  66                 wfOut( "...$name table already exists.\n" );
  67         } else {
  68                 wfOut( "Creating $name table..." );
  69                 if ( $fullpath ) {
  70                         $wgDatabase->sourceFile( $patch );
  71                 } else {
  72                         $wgDatabase->sourceFile( archive( $patch ) );
  73                 }
  74                 wfOut( "ok\n" );
  75         }
  76 }
  77
  78 function modify_field( $table, $field, $patch, $fullpath = false ) {
  79         global $wgDatabase;
  80         if ( !$wgDatabase->tableExists( $table ) ) {
  81                 wfOut( "...$table table does not exist, skipping modify field patch\n" );
  82         } elseif ( ! $wgDatabase->fieldExists( $table, $field ) ) {
  83                 wfOut( "...$field field does not exist in $table table, skipping modify field patch\n" );
  84         } else {
  85                 wfOut( "Modifying $field field of table $table..." );
  86                 if ( $fullpath ) {
  87                         $wgDatabase->sourceFile( $patch );
  88                 } else {
  89                         $wgDatabase->sourceFile( archive( $patch ) );
  90                 }
  91                 wfOut( "ok\n" );
  92         }
  93 }
  94
  95 function add_field( $table, $field, $patch, $fullpath = false ) {
  96         global $wgDatabase;
  97         if ( !$wgDatabase->tableExists( $table ) ) {
  98                 wfOut( "...$table table does not exist, skipping new field patch\n" );
  99         } elseif ( $wgDatabase->fieldExists( $table, $field ) ) {
 100                 wfOut( "...have $field field in $table table.\n" );
 101         } else {
 102                 wfOut( "Adding $field field to table $table..." );
 103                 if ( $fullpath ) {
 104                         $wgDatabase->sourceFile( $patch );
 105                 } else {
 106                         $wgDatabase->sourceFile( archive( $patch ) );
 107                 }
 108                 wfOut( "ok\n" );
 109         }
 110 }
 111
 112 function add_index( $table, $index, $patch, $fullpath = false ) {
 113         global $wgDatabase;
 114         if ( $wgDatabase->indexExists( $table, $index ) ) {
 115                 wfOut( "...$index key already set on $table table.\n" );
 116         } else {
 117                 wfOut( "Adding $index key to table $table... " );
 118                 if ( $fullpath ) {
 119                         $wgDatabase->sourceFile( $patch );
 120                 } else {
 121                         $wgDatabase->sourceFile( archive( $patch ) );
 122                 }
 123                 wfOut( "ok\n" );
 124         }
 125 }
 126
 127 function drop_index_if_exists( $table, $index, $patch, $fullpath = false ) {
 128         global $wgDatabase;
 129         if ( $wgDatabase->indexExists( $table, $index ) ) {
 130                 wfOut( "Dropping $index from table $table... " );
 131                 if ( $fullpath ) {
 132                         $wgDatabase->sourceFile( $patch );
 133                 } else {
 134                         $wgDatabase->sourceFile( archive( $patch ) );
 135                 }
 136                 wfOut( "ok\n" );
 137         } else {
 138                 wfOut( "...$index doesn't exist.\n" );
 139         }
 140 }
 141
 142 function do_interwiki_update() {
 143         # Check that interwiki table exists; if it doesn't source it
 144         global $wgDatabase, $IP;
 145         if ( $wgDatabase->tableExists( "interwiki" ) ) {
 146                 wfOut( "...already have interwiki table\n" );
 147                 return true;
 148         }
 149         wfOut( "Creating interwiki table: " );
 150         $wgDatabase->sourceFile( archive( "patch-interwiki.sql" ) );
 151         wfOut( "ok\n" );
 152         wfOut( "Adding default interwiki definitions: " );
 153         $wgDatabase->sourceFile( "$IP/maintenance/interwiki.sql" );
 154         wfOut( "ok\n" );
 155 }
 156
 157 function do_index_update() {
 158         # Check that proper indexes are in place
 159         global $wgDatabase;
 160         $meta = $wgDatabase->fieldInfo( "recentchanges", "rc_timestamp" );
 161         if ( !$meta->isMultipleKey() ) {
 162                 wfOut( "Updating indexes to 20031107: " );
 163                 $wgDatabase->sourceFile( archive( "patch-indexes.sql" ) );
 164                 wfOut( "ok\n" );
 165                 return true;
 166         }
 167         wfOut( "...indexes seem up to 20031107 standards\n" );
 168         return false;
 169 }
 170
 171 function do_image_index_update() {
 172         global $wgDatabase;
 173
 174         $meta = $wgDatabase->fieldInfo( "image", "img_major_mime" );
 175         if ( !$meta->isMultipleKey() ) {
 176                 wfOut( "Updating indexes to 20050912: " );
 177                 $wgDatabase->sourceFile( archive( "patch-mimesearch-indexes.sql" ) );
 178                 wfOut( "ok\n" );
 179                 return true;
 180         }
 181         wfOut( "...indexes seem up to 20050912 standards\n" );
 182         return false;
 183 }
 184
 185 function do_image_name_unique_update() {
 186         global $wgDatabase;
 187         if ( $wgDatabase->indexExists( 'image', 'PRIMARY' ) ) {
 188                 wfOut( "...image primary key already set.\n" );
 189         } else {
 190                 wfOut( "Making img_name the primary key... " );
 191                 $wgDatabase->sourceFile( archive( "patch-image_name_primary.sql" ) );
 192                 wfOut( "ok\n" );
 193         }
 194 }
 195
 196 function do_logging_timestamp_index() {
 197         global $wgDatabase;
 198         if ( $wgDatabase->indexExists( 'logging', 'times' ) ) {
 199                 wfOut( "...timestamp key on logging already exists.\n" );
 200         } else {
 201                 wfOut( "Adding timestamp key on logging table... " );
 202                 $wgDatabase->sourceFile( archive( "patch-logging-times-index.sql" ) );
 203                 wfOut( "ok\n" );
 204         }
 205 }
 206
 207 function do_archive_user_index() {
 208         global $wgDatabase;
 209         if ( $wgDatabase->indexExists( 'archive', 'usertext_timestamp' ) ) {
 210                 wfOut( "...usertext,timestamp key on archive already exists.\n" );
 211         } else {
 212                 wfOut( "Adding usertext,timestamp key on archive table... " );
 213                 $wgDatabase->sourceFile( archive( "patch-archive-user-index.sql" ) );
 214                 wfOut( "ok\n" );
 215         }
 216 }
 217
 218 function do_image_user_index() {
 219         global $wgDatabase;
 220         if ( $wgDatabase->indexExists( 'image', 'img_usertext_timestamp' ) ) {
 221                 wfOut( "...usertext,timestamp key on image already exists.\n" );
 222         } else {
 223                 wfOut( "Adding usertext,timestamp key on image table... " );
 224                 $wgDatabase->sourceFile( archive( "patch-image-user-index.sql" ) );
 225                 wfOut( "ok\n" );
 226         }
 227 }
 228
 229 function do_oldimage_user_index() {
 230         global $wgDatabase;
 231         if ( $wgDatabase->indexExists( 'oldimage', 'oi_usertext_timestamp' ) ) {
 232                 wfOut( "...usertext,timestamp key on oldimage already exists.\n" );
 233         } else {
 234                 wfOut( "Adding usertext,timestamp key on oldimage table... " );
 235                 $wgDatabase->sourceFile( archive( "patch-oldimage-user-index.sql" ) );
 236                 wfOut( "ok\n" );
 237         }
 238 }
 239
 240 function do_watchlist_update() {
 241         global $wgDatabase;
 242         $fname = 'do_watchlist_update';
 243         if ( $wgDatabase->fieldExists( 'watchlist', 'wl_notificationtimestamp' ) ) {
 244                 wfOut( "...the watchlist table is already set up for email notification.\n" );
 245         } else {
 246                 wfOut( "Adding wl_notificationtimestamp field for email notification management." );
 247                 /* ALTER TABLE watchlist ADD (wl_notificationtimestamp varchar(14) binary NOT NULL default '0'); */
 248                 $wgDatabase->sourceFile( archive( 'patch-email-notification.sql' ) );
 249                 wfOut( "ok\n" );
 250         }
 251         # Check if we need to add talk page rows to the watchlist
 252         $talk = $wgDatabase->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', $fname );
 253         $nontalk = $wgDatabase->selectField( 'watchlist', 'count(*)', 'NOT (wl_namespace & 1)', $fname );
 254         if ( $talk != $nontalk ) {
 255                 wfOut( "Adding missing watchlist talk page rows... " );
 256                 flush();
 257
 258                 $wgDatabase->insertSelect( 'watchlist', 'watchlist',
 259                         array(
 260                                 'wl_user' => 'wl_user',
 261                                 'wl_namespace' => 'wl_namespace | 1',
 262                                 'wl_title' => 'wl_title',
 263                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 264                         ), array( 'NOT (wl_namespace & 1)' ), $fname, 'IGNORE' );
 265                 wfOut( "ok\n" );
 266         } else {
 267                 wfOut( "...watchlist talk page rows already present\n" );
 268         }
 269 }
 270
 271 function do_copy_newtalk_to_watchlist() {
 272         global $wgDatabase;
 273
 274         $res = $wgDatabase->safeQuery( 'SELECT user_id, user_ip FROM !',
 275                 $wgDatabase->tableName( 'user_newtalk' ) );
 276         $num_newtalks = $wgDatabase->numRows( $res );
 277         wfOut( "Now converting $num_newtalks user_newtalk entries to watchlist table entries ... \n" );
 278
 279         $user = new User();
 280         for ( $i = 1; $i <= $num_newtalks; $i++ ) {
 281                 $wluser = $wgDatabase->fetchObject( $res );
 282                 if ( $wluser->user_id == 0 ) { # anonymous users ... have IP numbers as "names"
 283                         if ( $user->isIP( $wluser->user_ip ) ) { # do only if it really looks like an IP number (double checked)
 284                                 $wgDatabase->replace( 'watchlist',
 285                                         array( array( 'wl_user', 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ) ),
 286                                         array( 'wl_user' => 0,
 287                                                 'wl_namespace' => NS_USER_TALK,
 288                                                 'wl_title' => $wluser->user_ip,
 289                                                 'wl_notificationtimestamp' => '19700101000000'
 290                                                 ), 'updaters.inc::do_watchlist_update2'
 291                                         );
 292                         }
 293                 } else { # normal users ... have user_ids
 294                         $user->setID( $wluser->user_id );
 295                         $wgDatabase->replace( 'watchlist',
 296                                 array( array( 'wl_user', 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ) ),
 297                                 array( 'wl_user' => $user->getID(),
 298                                         'wl_namespace' => NS_USER_TALK,
 299                                         'wl_title' => $user->getName(),
 300                                         'wl_notificationtimestamp' => '19700101000000'
 301                                         ), 'updaters.inc::do_watchlist_update3'
 302                                 );
 303                 }
 304         }
 305         wfOut( "Done.\n" );
 306 }
 307
 308 function do_user_update() {
 309         global $wgDatabase;
 310         if ( $wgDatabase->fieldExists( 'user', 'user_emailauthenticationtimestamp' ) ) {
 311                 wfOut( "User table contains old email authentication field. Dropping... " );
 312                 $wgDatabase->sourceFile( archive( 'patch-email-authentication.sql' ) );
 313                 wfOut( "ok\n" );
 314         } else {
 315                 wfOut( "...user table does not contain old email authentication field.\n" );
 316         }
 317 }
 318
 319 /**
 320  * 1.4 betas were missing the 'binary' marker from logging.log_title,
 321  * which causes a collation mismatch error on joins in MySQL 4.1.
 322  */
 323 function check_bin( $table, $field, $patchFile ) {
 324         global $wgDatabase, $wgDBtype;
 325         if ( $wgDBtype != 'mysql' )
 326                 return;
 327         $tableName = $wgDatabase->tableName( $table );
 328         $res = $wgDatabase->query( "SELECT $field FROM $tableName LIMIT 0" );
 329         $flags = explode( ' ', mysql_field_flags( $res->result, 0 ) );
 330         $wgDatabase->freeResult( $res );
 331
 332         if ( in_array( 'binary', $flags ) ) {
 333                 wfOut( "...$table table has correct $field encoding.\n" );
 334         } else {
 335                 wfOut( "Fixing $field encoding on $table table... " );
 336                 $wgDatabase->sourceFile( archive( $patchFile ) );
 337                 wfOut( "ok\n" );
 338         }
 339 }
 340
 341 function do_schema_restructuring() {
 342         global $wgDatabase;
 343         $fname = "do_schema_restructuring";
 344         if ( $wgDatabase->tableExists( 'page' ) ) {
 345                 wfOut( "...page table already exists.\n" );
 346         } else {
 347                 wfOut( "...converting from cur/old to page/revision/text DB structure.\n" );
 348                 wfOut( wfTimestamp( TS_DB ) );
 349                 wfOut( "......checking for duplicate entries.\n" );
 350
 351                 list ( $cur, $old, $page, $revision, $text ) = $wgDatabase->tableNamesN( 'cur', 'old', 'page', 'revision', 'text' );
 352
 353                 $rows = $wgDatabase->query( "SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 354                                 FROM $cur GROUP BY cur_title, cur_namespace HAVING c>1", $fname );
 355
 356                 if ( $wgDatabase->numRows( $rows ) > 0 ) {
 357                         wfOut( wfTimestamp( TS_DB ) );
 358                         wfOut( "......<b>Found duplicate entries</b>\n" );
 359                         wfOut( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 360                         while ( $row = $wgDatabase->fetchObject( $rows ) ) {
 361                                 if ( ! isset( $duplicate[$row->cur_namespace] ) ) {
 362                                         $duplicate[$row->cur_namespace] = array();
 363                                 }
 364                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 365                                 wfOut( sprintf( "      %-60s %3s %5s\n", $row->cur_title, $row->cur_namespace, $row->c ) );
 366                         }
 367                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 368                         $firstCond = true;
 369                         foreach ( $duplicate as $ns => $titles ) {
 370                                 if ( $firstCond ) {
 371                                         $firstCond = false;
 372                                 } else {
 373                                         $sql .= ' OR ';
 374                                 }
 375                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 376                                 $first = true;
 377                                 foreach ( $titles as $t ) {
 378                                         if ( $first ) {
 379                                                 $sql .= $wgDatabase->addQuotes( $t );
 380                                                 $first = false;
 381                                         } else {
 382                                                 $sql .= ', ' . $wgDatabase->addQuotes( $t );
 383                                         }
 384                                 }
 385                                 $sql .= ") ) \n";
 386                         }
 387                         # By sorting descending, the most recent entry will be the first in the list.
 388                         # All following entries will be deleted by the next while-loop.
 389                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 390
 391                         $rows = $wgDatabase->query( $sql, $fname );
 392
 393                         $prev_title = $prev_namespace = false;
 394                         $deleteId = array();
 395
 396                         while ( $row = $wgDatabase->fetchObject( $rows ) ) {
 397                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 398                                         $deleteId[] = $row->cur_id;
 399                                 }
 400                                 $prev_title     = $row->cur_title;
 401                                 $prev_namespace = $row->cur_namespace;
 402                         }
 403                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . join( ',', $deleteId ) . ')';
 404                         $rows = $wgDatabase->query( $sql, $fname );
 405                         wfOut( wfTimestamp( TS_DB ) );
 406                         wfOut( "......<b>Deleted</b> " . $wgDatabase->affectedRows() . " records.\n" );
 407                 }
 408
 409
 410                 wfOut( wfTimestamp( TS_DB ) );
 411                 wfOut( "......Creating tables.\n" );
 412                 $wgDatabase->query( "CREATE TABLE $page (
 413                         page_id int(8) unsigned NOT NULL auto_increment,
 414                         page_namespace int NOT NULL,
 415                         page_title varchar(255) binary NOT NULL,
 416                         page_restrictions tinyblob NOT NULL,
 417                         page_counter bigint(20) unsigned NOT NULL default '0',
 418                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 419                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 420                         page_random real unsigned NOT NULL,
 421                         page_touched char(14) binary NOT NULL default '',
 422                         page_latest int(8) unsigned NOT NULL,
 423                         page_len int(8) unsigned NOT NULL,
 424
 425                         PRIMARY KEY page_id (page_id),
 426                         UNIQUE INDEX name_title (page_namespace,page_title),
 427                         INDEX (page_random),
 428                         INDEX (page_len)
 429                         ) ENGINE=InnoDB", $fname );
 430                 $wgDatabase->query( "CREATE TABLE $revision (
 431                         rev_id int(8) unsigned NOT NULL auto_increment,
 432                         rev_page int(8) unsigned NOT NULL,
 433                         rev_comment tinyblob NOT NULL,
 434                         rev_user int(5) unsigned NOT NULL default '0',
 435                         rev_user_text varchar(255) binary NOT NULL default '',
 436                         rev_timestamp char(14) binary NOT NULL default '',
 437                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 438                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 439                         rev_len int(8) unsigned,
 440                         rev_parent_id int(8) unsigned default NULL,
 441                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 442                         UNIQUE INDEX rev_id (rev_id),
 443                         INDEX rev_timestamp (rev_timestamp),
 444                         INDEX page_timestamp (rev_page,rev_timestamp),
 445                         INDEX user_timestamp (rev_user,rev_timestamp),
 446                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 447                         ) ENGINE=InnoDB", $fname );
 448
 449                 wfOut( wfTimestamp( TS_DB ) );
 450                 wfOut( "......Locking tables.\n" );
 451                 $wgDatabase->query( "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE", $fname );
 452
 453                 $maxold = intval( $wgDatabase->selectField( 'old', 'max(old_id)', '', $fname ) );
 454                 wfOut( wfTimestamp( TS_DB ) );
 455                 wfOut( "......maxold is {$maxold}\n" );
 456
 457                 wfOut( wfTimestamp( TS_DB ) );
 458                 global $wgLegacySchemaConversion;
 459                 if ( $wgLegacySchemaConversion ) {
 460                         // Create HistoryBlobCurStub entries.
 461                         // Text will be pulled from the leftover 'cur' table at runtime.
 462                         wfOut( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 463                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 464                         $cur_flags = "'object'";
 465                 } else {
 466                         // Copy all cur text in immediately: this may take longer but avoids
 467                         // having to keep an extra table around.
 468                         wfOut( "......Moving text from cur.\n" );
 469                         $cur_text = 'cur_text';
 470                         $cur_flags = "''";
 471                 }
 472                 $wgDatabase->query( "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user, old_user_text,
 473                                         old_timestamp, old_minor_edit, old_flags)
 474                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags
 475                         FROM $cur", $fname );
 476
 477                 wfOut( wfTimestamp( TS_DB ) );
 478                 wfOut( "......Setting up revision table.\n" );
 479                 $wgDatabase->query( "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user, rev_user_text, rev_timestamp,
 480                                 rev_minor_edit)
 481                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 482                                 old_timestamp, old_minor_edit
 483                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title", $fname );
 484
 485                 wfOut( wfTimestamp( TS_DB ) );
 486                 wfOut( "......Setting up page table.\n" );
 487                 $wgDatabase->query( "INSERT INTO $page (page_id, page_namespace, page_title, page_restrictions, page_counter,
 488                         page_is_redirect, page_is_new, page_random, page_touched, page_latest, page_len)
 489                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 490                                 cur_random, cur_touched, rev_id, LENGTH(cur_text)
 491                         FROM $cur,$revision
 492                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}", $fname );
 493
 494                 wfOut( wfTimestamp( TS_DB ) );
 495                 wfOut( "......Unlocking tables.\n" );
 496                 $wgDatabase->query( "UNLOCK TABLES", $fname );
 497
 498                 wfOut( wfTimestamp( TS_DB ) );
 499                 wfOut( "......Renaming old.\n" );
 500                 $wgDatabase->query( "ALTER TABLE $old RENAME TO $text", $fname );
 501
 502                 wfOut( wfTimestamp( TS_DB ) );
 503                 wfOut( "...done.\n" );
 504         }
 505 }
 506
 507 function do_inverse_timestamp() {
 508         global $wgDatabase;
 509         if ( $wgDatabase->fieldExists( 'revision', 'inverse_timestamp' ) ) {
 510                 wfOut( "Removing revision.inverse_timestamp and fixing indexes... " );
 511                 $wgDatabase->sourceFile( archive( 'patch-inverse_timestamp.sql' ) );
 512                 wfOut( "ok\n" );
 513         } else {
 514                 wfOut( "...revision timestamp indexes already up to 2005-03-13\n" );
 515         }
 516 }
 517
 518 function do_text_id() {
 519         global $wgDatabase;
 520         if ( $wgDatabase->fieldExists( 'revision', 'rev_text_id' ) ) {
 521                 wfOut( "...rev_text_id already in place.\n" );
 522         } else {
 523                 wfOut( "Adding rev_text_id field... " );
 524                 $wgDatabase->sourceFile( archive( 'patch-rev_text_id.sql' ) );
 525                 wfOut( "ok\n" );
 526         }
 527 }
 528
 529 function do_namespace_size() {
 530         $tables = array(
 531                 'page'          => 'page',
 532                 'archive'       => 'ar',
 533                 'recentchanges' => 'rc',
 534                 'watchlist'     => 'wl',
 535                 'querycache'    => 'qc',
 536                 'logging'       => 'log',
 537         );
 538         foreach ( $tables as $table => $prefix ) {
 539                 do_namespace_size_on( $table, $prefix );
 540                 flush();
 541         }
 542 }
 543
 544 function do_namespace_size_on( $table, $prefix ) {
 545         global $wgDatabase, $wgDBtype;
 546         if ( $wgDBtype != 'mysql' )
 547                 return;
 548         $field = $prefix . '_namespace';
 549
 550         $tablename = $wgDatabase->tableName( $table );
 551         $result = $wgDatabase->query( "SHOW COLUMNS FROM $tablename LIKE '$field'" );
 552         $info = $wgDatabase->fetchObject( $result );
 553         $wgDatabase->freeResult( $result );
 554
 555         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 556                 wfOut( "...$field is already a full int ($info->Type).\n" );
 557         } else {
 558                 wfOut( "Promoting $field from $info->Type to int... " );
 559
 560                 $sql = "ALTER TABLE $tablename MODIFY $field int NOT NULL";
 561                 $wgDatabase->query( $sql );
 562
 563                 wfOut( "ok\n" );
 564         }
 565 }
 566
 567 function do_pagelinks_update() {
 568         global $wgDatabase;
 569         if ( $wgDatabase->tableExists( 'pagelinks' ) ) {
 570                 wfOut( "...already have pagelinks table.\n" );
 571         } else {
 572                 wfOut( "Converting links and brokenlinks tables to pagelinks... " );
 573                 $wgDatabase->sourceFile( archive( 'patch-pagelinks.sql' ) );
 574                 wfOut( "ok\n" );
 575                 flush();
 576
 577                 global $wgCanonicalNamespaceNames;
 578                 foreach ( $wgCanonicalNamespaceNames as $ns => $name ) {
 579                         if ( $ns != 0 ) {
 580                                 do_pagelinks_namespace( $ns );
 581                         }
 582                 }
 583         }
 584 }
 585
 586 function do_pagelinks_namespace( $namespace ) {
 587         global $wgDatabase, $wgContLang;
 588
 589         $ns = intval( $namespace );
 590         wfOut( "Cleaning up broken links for namespace $ns... " );
 591
 592         $pagelinks = $wgDatabase->tableName( 'pagelinks' );
 593         $name = $wgContLang->getNsText( $ns );
 594         $prefix = $wgDatabase->strencode( $name );
 595         $likeprefix = str_replace( '_', '\\_', $prefix );
 596
 597         $sql = "UPDATE $pagelinks
 598                    SET pl_namespace=$ns,
 599                        pl_title=TRIM(LEADING '$prefix:' FROM pl_title)
 600                  WHERE pl_namespace=0
 601                    AND pl_title LIKE '$likeprefix:%'";
 602
 603         $wgDatabase->query( $sql, 'do_pagelinks_namespace' );
 604         wfOut( "ok\n" );
 605 }
 606
 607 function do_drop_img_type() {
 608         global $wgDatabase;
 609
 610         if ( $wgDatabase->fieldExists( 'image', 'img_type' ) ) {
 611                 wfOut( "Dropping unused img_type field in image table... " );
 612                 $wgDatabase->sourceFile( archive( 'patch-drop_img_type.sql' ) );
 613                 wfOut( "ok\n" );
 614         } else {
 615                 wfOut( "...no img_type field in image table; Good.\n" );
 616         }
 617 }
 618
 619 function do_old_links_update() {
 620         global $wgDatabase;
 621         if ( $wgDatabase->tableExists( 'pagelinks' ) ) {
 622                 wfOut( "...have pagelinks; skipping old links table updates.\n" );
 623         } else {
 624                 convertLinks(); flush();
 625         }
 626 }
 627
 628 function fix_ancient_imagelinks() {
 629         global $wgDatabase;
 630         $info = $wgDatabase->fieldInfo( 'imagelinks', 'il_from' );
 631         if ( $info && $info->type() === 'string' ) {
 632                 wfOut( "Fixing ancient broken imagelinks table.\n" );
 633                 wfOut( "NOTE: you will have to run maintenance/refreshLinks.php after this.\n" );
 634                 $wgDatabase->sourceFile( archive( 'patch-fix-il_from.sql' ) );
 635                 wfOut( "ok\n" );
 636         } else {
 637                 wfOut( "...il_from OK\n" );
 638         }
 639 }
 640
 641 function do_user_unique_update() {
 642         global $wgDatabase;
 643         $duper = new UserDupes( $wgDatabase );
 644         if ( $duper->hasUniqueIndex() ) {
 645                 wfOut( "...already have unique user_name index.\n" );
 646         } else {
 647                 if ( !$duper->clearDupes() ) {
 648                         wfOut( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 649                 }
 650                 wfOut( "Adding unique index on user_name... " );
 651                 $wgDatabase->sourceFile( archive( 'patch-user_nameindex.sql' ) );
 652                 wfOut( "ok\n" );
 653         }
 654 }
 655
 656 function do_user_groups_update() {
 657         $fname = 'do_user_groups_update';
 658         global $wgDatabase;
 659
 660         if ( $wgDatabase->tableExists( 'user_groups' ) ) {
 661                 wfOut( "...user_groups table already exists.\n" );
 662                 return do_user_groups_reformat();
 663         }
 664
 665         wfOut( "Adding user_groups table... " );
 666         $wgDatabase->sourceFile( archive( 'patch-user_groups.sql' ) );
 667         wfOut( "ok\n" );
 668
 669         if ( !$wgDatabase->tableExists( 'user_rights' ) ) {
 670                 if ( $wgDatabase->fieldExists( 'user', 'user_rights' ) ) {
 671                         wfOut( "Upgrading from a 1.3 or older database? Breaking out user_rights for conversion..." );
 672                         $wgDatabase->sourceFile( archive( 'patch-user_rights.sql' ) );
 673                         wfOut( "ok\n" );
 674                 } else {
 675                         wfOut( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 676                         wfOut( "*** You may need to manually configure some sysops by manipulating\n" );
 677                         wfOut( "*** the user_groups table.\n" );
 678                         return;
 679                 }
 680         }
 681
 682         wfOut( "Converting user_rights table to user_groups... " );
 683         $result = $wgDatabase->select( 'user_rights',
 684                 array( 'ur_user', 'ur_rights' ),
 685                 array( "ur_rights != ''" ),
 686                 $fname );
 687
 688         while ( $row = $wgDatabase->fetchObject( $result ) ) {
 689                 $groups = array_unique(
 690                         array_map( 'trim',
 691                                 explode( ',', $row->ur_rights ) ) );
 692
 693                 foreach ( $groups as $group ) {
 694                         $wgDatabase->insert( 'user_groups',
 695                                 array(
 696                                         'ug_user'  => $row->ur_user,
 697                                         'ug_group' => $group ),
 698                                 $fname );
 699                 }
 700         }
 701         $wgDatabase->freeResult( $result );
 702         wfOut( "ok\n" );
 703 }
 704
 705 function do_user_groups_reformat() {
 706         # Check for bogus formats from previous 1.5 alpha code.
 707         global $wgDatabase;
 708         $info = $wgDatabase->fieldInfo( 'user_groups', 'ug_group' );
 709
 710         if ( $info->type() == 'int' ) {
 711                 $oldug = $wgDatabase->tableName( 'user_groups' );
 712                 $newug = $wgDatabase->tableName( 'user_groups_bogus' );
 713                 wfOut( "user_groups is in bogus intermediate format. Renaming to $newug... " );
 714                 $wgDatabase->query( "ALTER TABLE $oldug RENAME TO $newug" );
 715                 wfOut( "ok\n" );
 716
 717                 wfOut( "Re-adding fresh user_groups table... " );
 718                 $wgDatabase->sourceFile( archive( 'patch-user_groups.sql' ) );
 719                 wfOut( "ok\n" );
 720
 721                 wfOut( "***\n" );
 722                 wfOut( "*** WARNING: You will need to manually fix up user permissions in the user_groups\n" );
 723                 wfOut( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 724                 wfOut( "***\n" );
 725         } else {
 726                 wfOut( "...user_groups is in current format.\n" );
 727         }
 728
 729 }
 730
 731 function do_watchlist_null() {
 732         # Make sure wl_notificationtimestamp can be NULL,
 733         # and update old broken items.
 734         global $wgDatabase;
 735         $info = $wgDatabase->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 736
 737         if ( !$info->nullable() ) {
 738                 wfOut( "Making wl_notificationtimestamp nullable... " );
 739                 $wgDatabase->sourceFile( archive( 'patch-watchlist-null.sql' ) );
 740                 wfOut( "ok\n" );
 741         } else {
 742                 wfOut( "...wl_notificationtimestamp is already nullable.\n" );
 743         }
 744
 745 }
 746
 747 /**
 748  * @bug 3946
 749  */
 750 function do_page_random_update() {
 751         global $wgDatabase;
 752
 753         wfOut( "Setting page_random to a random value on rows where it equals 0..." );
 754
 755         $page = $wgDatabase->tableName( 'page' );
 756         $wgDatabase->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", 'do_page_random_update' );
 757         $rows = $wgDatabase->affectedRows();
 758
 759         wfOut( "changed $rows rows\n" );
 760 }
 761
 762 function do_templatelinks_update() {
 763         global $wgDatabase;
 764         $fname = 'do_templatelinks_update';
 765
 766         if ( $wgDatabase->tableExists( 'templatelinks' ) ) {
 767                 wfOut( "...templatelinks table already exists\n" );
 768                 return;
 769         }
 770         wfOut( "Creating templatelinks table...\n" );
 771         $wgDatabase->sourceFile( archive( 'patch-templatelinks.sql' ) );
 772         wfOut( "Populating...\n" );
 773         if ( wfGetLB()->getServerCount() > 1 ) {
 774                 // Slow, replication-friendly update
 775                 $res = $wgDatabase->select( 'pagelinks', array( 'pl_from', 'pl_namespace', 'pl_title' ),
 776                         array( 'pl_namespace' => NS_TEMPLATE ), $fname );
 777                 $count = 0;
 778                 while ( $row = $wgDatabase->fetchObject( $res ) ) {
 779                         $count = ( $count + 1 ) % 100;
 780                         if ( $count == 0 ) {
 781                                 if ( function_exists( 'wfWaitForSlaves' ) ) {
 782                                         wfWaitForSlaves( 10 );
 783                                 } else {
 784                                         sleep( 1 );
 785                                 }
 786                         }
 787                         $wgDatabase->insert( 'templatelinks',
 788                                 array(
 789                                         'tl_from' => $row->pl_from,
 790                                         'tl_namespace' => $row->pl_namespace,
 791                                         'tl_title' => $row->pl_title,
 792                                 ), $fname
 793                         );
 794
 795                 }
 796                 $wgDatabase->freeResult( $res );
 797         } else {
 798                 // Fast update
 799                 $wgDatabase->insertSelect( 'templatelinks', 'pagelinks',
 800                         array(
 801                                 'tl_from' => 'pl_from',
 802                                 'tl_namespace' => 'pl_namespace',
 803                                 'tl_title' => 'pl_title'
 804                         ), array(
 805                                 'pl_namespace' => 10
 806                         ), $fname
 807                 );
 808         }
 809         wfOut( "Done. Please run maintenance/refreshLinks.php for a more thorough templatelinks update.\n" );
 810 }
 811
 812 // Add index on ( rc_namespace, rc_user_text ) [Jul. 2006]
 813 // Add index on ( rc_user_text, rc_timestamp ) [Nov. 2006]
 814 function do_rc_indices_update() {
 815         global $wgDatabase;
 816         wfOut( "Checking for additional recent changes indices...\n" );
 817
 818         $indexes = array(
 819                 'rc_ns_usertext' => 'patch-recentchanges-utindex.sql',
 820                 'rc_user_text' => 'patch-rc_user_text-index.sql',
 821         );
 822
 823         foreach ( $indexes as $index => $patch ) {
 824                 $info = $wgDatabase->indexInfo( 'recentchanges', $index, __METHOD__ );
 825                 if ( !$info ) {
 826                         wfOut( "...index `{$index}` not found; adding..." );
 827                         $wgDatabase->sourceFile( archive( $patch ) );
 828                         wfOut( "done.\n" );
 829                 } else {
 830                         wfOut( "...index `{$index}` seems ok.\n" );
 831                 }
 832         }
 833 }
 834
 835 function index_has_field( $table, $index, $field ) {
 836         global $wgDatabase;
 837         wfOut( "Checking if $table index $index includes field $field...\n" );
 838         $info = $wgDatabase->indexInfo( $table, $index, __METHOD__ );
 839         if ( $info ) {
 840                 foreach ( $info as $row ) {
 841                         if ( $row->Column_name == $field ) {
 842                                 wfOut( "...index $index on table $table seems to be ok\n" );
 843                                 return true;
 844                         }
 845                 }
 846         }
 847         wfOut( "...index $index on table $table has no field $field; adding\n" );
 848         return false;
 849 }
 850
 851 function do_backlinking_indices_update() {
 852         global $wgDatabase;
 853         wfOut( "Checking for backlinking indices...\n" );
 854         if ( !index_has_field( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 855                 !index_has_field( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 856                 !index_has_field( 'imagelinks', 'il_to', 'il_from' ) )
 857         {
 858                 $wgDatabase->sourceFile( archive( 'patch-backlinkindexes.sql' ) );
 859                 wfOut( "...backlinking indices updated\n" );
 860         }
 861 }
 862
 863 function do_categorylinks_indices_update() {
 864         global $wgDatabase;
 865         wfOut( "Checking for categorylinks indices...\n" );
 866         if ( !index_has_field( 'categorylinks', 'cl_sortkey', 'cl_from' ) )
 867         {
 868                 $wgDatabase->sourceFile( archive( 'patch-categorylinksindex.sql' ) );
 869                 wfOut( "...categorylinks indices updated\n" );
 870         }
 871 }
 872
 873 function do_filearchive_indices_update() {
 874         global $wgDatabase;
 875         wfOut( "Checking filearchive indices...\n" );
 876         $info = $wgDatabase->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 877         if ( !$info )
 878         {
 879                 $wgDatabase->sourceFile( archive( 'patch-filearchive-user-index.sql' ) );
 880                 wfOut( "...filearchive indices updated\n" );
 881         }
 882 }
 883
 884 function maybe_do_profiling_memory_update() {
 885         global $wgDatabase;
 886         if ( !$wgDatabase->tableExists( 'profiling' ) ) {
 887                 // Simply ignore
 888         } elseif ( $wgDatabase->fieldExists( 'profiling', 'pf_memory' ) ) {
 889                 wfOut( "...profiling table has pf_memory field.\n" );
 890         } else {
 891                 wfOut( "Adding pf_memory field to table profiling..." );
 892                 $wgDatabase->sourceFile( archive( 'patch-profiling-memory.sql' ) );
 893                 wfOut( "ok\n" );
 894         }
 895 }
 896
 897 function do_stats_init() {
 898         // Sometimes site_stats table is not properly populated.
 899         global $wgDatabase;
 900         wfOut( "Checking site_stats row..." );
 901         $row = $wgDatabase->selectRow( 'site_stats', '*', array( 'ss_row_id' => 1 ), __METHOD__ );
 902         if ( $row === false ) {
 903                 wfOut( "data is missing! rebuilding...\n" );
 904         } elseif ( isset( $row->site_stats ) && $row->ss_total_pages == -1 ) {
 905                 wfOut( "missing ss_total_pages, rebuilding...\n" );
 906         } else {
 907                 wfOut( "ok.\n" );
 908                 return;
 909         }
 910         SiteStatsInit::doAllAndCommit( false );
 911 }
 912
 913 function do_active_users_init() {
 914         global $wgDatabase;
 915         $activeUsers = $wgDatabase->selectField( 'site_stats', 'ss_active_users', false, __METHOD__ );
 916         if ( $activeUsers == -1 ) {
 917                 $activeUsers = $wgDatabase->selectField( 'recentchanges',
 918                         'COUNT( DISTINCT rc_user_text )',
 919                         array( 'rc_user != 0', 'rc_bot' => 0, "rc_log_type != 'newusers'" ), __METHOD__
 920                 );
 921                 $wgDatabase->update( 'site_stats',
 922                         array( 'ss_active_users' => intval( $activeUsers ) ),
 923                         array( 'ss_row_id' => 1 ), __METHOD__, array( 'LIMIT' => 1 )
 924                 );
 925         }
 926         wfOut( "...ss_active_users user count set...\n" );
 927 }
 928
 929 function purge_cache() {
 930         global $wgDatabase;
 931         # We can't guarantee that the user will be able to use TRUNCATE,
 932         # but we know that DELETE is available to us
 933         wfOut( "Purging caches..." );
 934         $wgDatabase->delete( 'objectcache', '*', __METHOD__ );
 935         wfOut( "done.\n" );
 936 }
 937
 938 function do_all_updates( $shared = false, $purge = true ) {
 939         global $wgSharedDB, $wgSharedTables, $wgDatabase, $wgDBtype;
 940
 941         wfRunHooks( 'LoadExtensionSchemaUpdates' );
 942
 943         $doUser = $shared ? $wgSharedDB && in_array( 'user', $wgSharedTables ) : !$wgSharedDB || !in_array( 'user', $wgSharedTables );
 944
 945         if ( $wgDBtype === 'postgres' ) {
 946                 do_postgres_updates();
 947                 return;
 948         }
 949
 950         $up = DatabaseUpdater::newForDb( $wgDatabase );
 951         $up->doUpdates();
 952
 953         wfOut( "Deleting old default messages (this may take a long time!)..." );
 954         if ( !defined( 'MW_NO_SETUP' ) ) {
 955                 define( 'MW_NO_SETUP', true );
 956         }
 957         require_once 'deleteDefaultMessages.php';
 958         DeleteDefaultMessages::reallyExecute();
 959         wfOut( "Done\n" );
 960
 961         do_stats_init();
 962
 963         if ( $purge ) {
 964                 purge_cache();
 965         }
 966 }
 967
 968 function archive( $name ) {
 969         global $wgDBtype, $IP;
 970         if ( file_exists( "$IP/maintenance/$wgDBtype/archives/$name" ) ) {
 971                 return "$IP/maintenance/$wgDBtype/archives/$name";
 972         } else {
 973                 return "$IP/maintenance/archives/$name";
 974         }
 975 }
 976
 977 function do_restrictions_update() {
 978         # Adding page_restrictions table, obsoleting page.page_restrictions.
 979         #  Migrating old restrictions to new table
 980         # -- Andrew Garrett, January 2007.
 981
 982         global $wgDatabase;
 983
 984         $name = 'page_restrictions';
 985         $patch = 'patch-page_restrictions.sql';
 986         $patch2 = 'patch-page_restrictions_sortkey.sql';
 987
 988         if ( $wgDatabase->tableExists( $name ) ) {
 989                 wfOut( "...$name table already exists.\n" );
 990         } else {
 991                 wfOut( "Creating $name table..." );
 992                 $wgDatabase->sourceFile( archive( $patch ) );
 993                 $wgDatabase->sourceFile( archive( $patch2 ) );
 994                 wfOut( "ok\n" );
 995
 996                 wfOut( "Migrating old restrictions to new table..." );
 997
 998                 $res = $wgDatabase->select( 'page', array( 'page_id', 'page_restrictions' ), array( "page_restrictions!=''", "page_restrictions!='edit=:move='" ), __METHOD__ );
 999
1000                 $count = 0;
1001
1002                 while ( $row = $wgDatabase->fetchObject( $res ) ) {
1003                         $count = ( $count + 1 ) % 100;
1004
1005                         if ( $count == 0 ) {
1006                                 if ( function_exists( 'wfWaitForSlaves' ) ) {
1007                                         wfWaitForSlaves( 10 );
1008                                 } else {
1009                                         sleep( 1 );
1010                                 }
1011                         }
1012
1013                         # Figure out what the restrictions are..
1014                         $id = $row->page_id;
1015                         $flatrestrictions = explode( ':', $row->page_restrictions );
1016
1017                         $restrictions = array ();
1018                         foreach ( $flatrestrictions as $restriction ) {
1019                                 $thisrestriction = explode( '=', $restriction, 2 );
1020                                 if ( count( $thisrestriction ) == 1 ) {
1021                                         // Compatibility with old protections from before
1022                                         // separate move protection was added.
1023                                         list( $level ) = $thisrestriction;
1024                                         if ( $level ) {
1025                                                 $restrictions['edit'] = $level;
1026                                                 $restrictions['move'] = $level;
1027                                         }
1028                                 } else {
1029                                         list( $type, $level ) = $thisrestriction;
1030                                         if ( $level ) {
1031                                                 $restrictions[$type] = $level;
1032                                         }
1033                                 }
1034
1035                         $wgDatabase->update( 'page', array ( 'page_restrictions' => '' ), array( 'page_id' => $id ), __METHOD__ );
1036
1037                         }
1038
1039                         foreach ( $restrictions as $type => $level ) {
1040                                 $wgDatabase->insert( 'page_restrictions', array ( 'pr_page' => $id,
1041                                                                                         'pr_type' => $type,
1042                                                                                         'pr_level' => $level,
1043                                                                                         'pr_cascade' => 0,
1044                                                                                         'pr_expiry' => 'infinity' ),
1045                                                                                         __METHOD__ );
1046                         }
1047                 }
1048                 wfOut( "ok\n" );
1049         }
1050 }
1051
1052 function do_category_population() {
1053         if ( update_row_exists( 'populate category' ) ) {
1054                 wfOut( "...category table already populated.\n" );
1055                 return;
1056         }
1057         require_once( 'populateCategory.php' );
1058         wfOut(
1059                 "Populating category table, printing progress markers. " .
1060                 "For large databases, you\n" .
1061                 "may want to hit Ctrl-C and do this manually with maintenance/\n" .
1062                 "populateCategory.php.\n"
1063         );
1064         $task = new PopulateCategory();
1065         $task->execute();
1066         wfOut( "Done populating category table.\n" );
1067 }
1068
1069 function do_populate_parent_id() {
1070         if ( update_row_exists( 'populate rev_parent_id' ) ) {
1071                 wfOut( "...rev_parent_id column already populated.\n" );
1072                 return;
1073         }
1074         require_once( 'populateParentId.php' );
1075         $task = new PopulateParentId();
1076         $task->execute();
1077 }
1078
1079 function do_populate_rev_len() {
1080         if ( update_row_exists( 'populate rev_len' ) ) {
1081                 wfOut( "...rev_len column already populated.\n" );
1082                 return;
1083         }
1084         require_once( 'populateRevisionLength.php' );
1085         $task = new PopulateRevisionLength();
1086         $task->execute();
1087 }
1088
1089 function do_collation_update() {
1090         global $wgDatabase, $wgCollationVersion;
1091         if ( $wgDatabase->selectField(
1092                 'categorylinks',
1093                 'COUNT(*)',
1094                 'cl_collation != ' . $wgDatabase->addQuotes( $wgCollationVersion ),
1095                 __FUNCTION__
1096         ) == 0 ) {
1097                 wfOut( "...collations up-to-date.\n" );
1098                 return;
1099         }
1100         require_once( 'updateCollation.php' );
1101         $task = new UpdateCollation();
1102         $task->execute();
1103 }
1104
1105 function sqlite_initial_indexes() {
1106         global $wgDatabase;
1107         // initial-indexes.sql fails if the indexes are already present, so we perform a quick check if our database is newer.
1108         if ( update_row_exists( 'initial_indexes' ) || $wgDatabase->indexExists( 'user', 'user_name' ) ) {
1109                 wfOut( "...have initial indexes\n" );
1110                 return;
1111         }
1112         wfOut( "Adding initial indexes..." );
1113         $wgDatabase->sourceFile( archive( 'initial-indexes.sql' ) );
1114         wfOut( "done\n" );
1115 }
1116
1117 function sqlite_setup_searchindex() {
1118         global $wgDatabase;
1119         $module = $wgDatabase->getFulltextSearchModule();
1120         $fts3tTable = update_row_exists( 'fts3' );
1121         if ( $fts3tTable &&  !$module ) {
1122                 wfOut( '...PHP is missing FTS3 support, downgrading tables...' );
1123                 $wgDatabase->sourceFile( archive( 'searchindex-no-fts.sql' ) );
1124                 wfOut( "done\n" );
1125         } elseif ( !$fts3tTable && $module == 'FTS3' ) {
1126                 wfOut( '...adding FTS3 search capabilities...' );
1127                 $wgDatabase->sourceFile( archive( 'searchindex-fts3.sql' ) );
1128                 wfOut( "done\n" );
1129         } else {
1130                 wfOut( "...fulltext search table appears to be in order.\n" );
1131         }
1132 }
1133
1134 function do_unique_pl_tl_il() {
1135         global $wgDatabase;
1136         $info = $wgDatabase->indexInfo( 'pagelinks', 'pl_namespace' );
1137         if ( is_array( $info ) && !$info[0]->Non_unique ) {
1138                 wfOut( "...pl_namespace, tl_namespace, il_to indices are already UNIQUE.\n" );
1139         } else {
1140                 wfOut( "Making pl_namespace, tl_namespace and il_to indices UNIQUE... " );
1141                 $wgDatabase->sourceFile( archive( 'patch-pl-tl-il-unique.sql' ) );
1142                 wfOut( "ok\n" );
1143         }
1144 }
1145
1146 function do_log_search_population() {
1147         if ( update_row_exists( 'populate log_search' ) ) {
1148                 wfOut( "...log_search table already populated.\n" );
1149                 return;
1150         }
1151         require_once( 'populateLogSearch.php' );
1152         wfOut(
1153 "Populating log_search table, printing progress markers. For large\n" .
1154 "databases, you may want to hit Ctrl-C and do this manually with\n" .
1155 "maintenance/populateLogSearch.php.\n" );
1156         $task = new PopulateLogSearch();
1157         $task->execute();
1158         wfOut( "Done populating log_search table.\n" );
1159 }
1160
1161 function rename_eu_wiki_id() {
1162         global $wgDatabase;
1163         if ( $wgDatabase->fieldExists( 'external_user', 'eu_local_id' ) ) {
1164                 wfOut( "...eu_wiki_id already renamed to eu_local_id.\n" );
1165                 return;
1166         }
1167         wfOut( "Renaming eu_wiki_id -> eu_local_id... " );
1168         $wgDatabase->sourceFile( archive( 'patch-eu_local_id.sql' ) );
1169         wfOut( "ok\n" );
1170 }
1171
1172 function do_update_transcache_field() {
1173         global $wgDatabase;
1174         if ( update_row_exists( 'convert transcache field' ) ) {
1175                 wfOut( "...transcache tc_time already converted.\n" );
1176                 return;
1177         } else {
1178                 wfOut( "Converting tc_time from UNIX epoch to MediaWiki timestamp... " );
1179                 $wgDatabase->sourceFile( archive( 'patch-tc-timestamp.sql' ) );
1180                 wfOut( "ok\n" );
1181         }
1182 }
1183
1184 function do_update_mime_minor_field() {
1185         if ( update_row_exists( 'mime_minor_length' ) ) {
1186                 wfOut( "...*_mime_minor fields are already long enough.\n" );
1187         } else {
1188                 global $wgDatabase;
1189                 wfOut( "Altering all *_mime_minor fields to 100 bytes in size ... " );
1190                 $wgDatabase->sourceFile( archive( 'patch-mime_minor_length.sql' ) );
1191                 wfOut( "ok\n" );
1192         }
1193 }
1194
1195 /***********************************************************************
1196  * Start PG stuff
1197  * TODO: merge with above
1198  ***********************************************************************/
1199
1200 function pg_describe_table( $table ) {
1201         global $wgDatabase, $wgDBmwschema;
1202         $q = <<<END
1203 SELECT attname, attnum FROM pg_namespace, pg_class, pg_attribute
1204         WHERE pg_class.relnamespace = pg_namespace.oid
1205           AND attrelid=pg_class.oid AND attnum > 0
1206           AND relname=%s AND nspname=%s
1207 END;
1208         $res = $wgDatabase->query( sprintf( $q,
1209                         $wgDatabase->addQuotes( $table ),
1210                         $wgDatabase->addQuotes( $wgDBmwschema ) ) );
1211         if ( !$res ) {
1212                 return null;
1213         }
1214
1215         $cols = array();
1216         while ( $r = $wgDatabase->fetchRow( $res ) ) {
1217                 $cols[] = array(
1218                                 "name" => $r[0],
1219                                 "ord" => $r[1],
1220                         );
1221         }
1222         return $cols;
1223 }
1224
1225 function pg_describe_index( $idx ) {
1226         global $wgDatabase, $wgDBmwschema;
1227
1228         // first fetch the key (which is a list of columns ords) and
1229         // the table the index applies to (an oid)
1230         $q = <<<END
1231 SELECT indkey, indrelid FROM pg_namespace, pg_class, pg_index
1232         WHERE nspname=%s
1233           AND pg_class.relnamespace = pg_namespace.oid
1234           AND relname=%s
1235           AND indexrelid=pg_class.oid
1236 END;
1237         $res = $wgDatabase->query( sprintf( $q,
1238                         $wgDatabase->addQuotes( $wgDBmwschema ),
1239                         $wgDatabase->addQuotes( $idx ) ) );
1240         if ( !$res ) {
1241                 return null;
1242         }
1243         if ( !( $r = $wgDatabase->fetchRow( $res ) ) ) {
1244                 $wgDatabase->freeResult( $res );
1245                 return null;
1246         }
1247
1248         $indkey = $r[0];
1249         $relid = intval( $r[1] );
1250         $indkeys = explode( " ", $indkey );
1251         $wgDatabase->freeResult( $res );
1252
1253         $colnames = array();
1254         foreach ( $indkeys as $rid ) {
1255                 $query = <<<END
1256 SELECT attname FROM pg_class, pg_attribute
1257         WHERE attrelid=$relid
1258           AND attnum=%d
1259           AND attrelid=pg_class.oid
1260 END;
1261                 $r2 = $wgDatabase->query( sprintf( $query, $rid ) );
1262                 if ( !$r2 ) {
1263                         return null;
1264                 }
1265                 if ( !( $row2 = $wgDatabase->fetchRow( $r2 ) ) ) {
1266                         $wgDatabase->freeResult( $r2 );
1267                         return null;
1268                 }
1269                 $colnames[] = $row2[0];
1270                 $wgDatabase->freeResult( $r2 );
1271         }
1272
1273         return $colnames;
1274 }
1275
1276 function pg_index_exists( $table, $index ) {
1277         global $wgDatabase, $wgDBmwschema;
1278         $exists = $wgDatabase->selectField( "pg_indexes", "indexname",
1279                         array(  "indexname" => $index,
1280                                 "tablename" => $table,
1281                                 "schemaname" => $wgDBmwschema ) );
1282         return $exists === $index;
1283 }
1284
1285 function pg_fkey_deltype( $fkey ) {
1286         global $wgDatabase, $wgDBmwschema;
1287         $q = <<<END
1288 SELECT confdeltype FROM pg_constraint, pg_namespace
1289         WHERE connamespace=pg_namespace.oid
1290           AND nspname=%s
1291           AND conname=%s;
1292 END;
1293         $r = $wgDatabase->query( sprintf( $q,
1294                 $wgDatabase->addQuotes( $wgDBmwschema ),
1295                 $wgDatabase->addQuotes( $fkey ) ) );
1296         if ( !( $row = $wgDatabase->fetchRow( $r ) ) ) {
1297                 return null;
1298         }
1299         return $row[0];
1300 }
1301
1302 function pg_rule_def( $table, $rule ) {
1303         global $wgDatabase, $wgDBmwschema;
1304         $q = <<<END
1305 SELECT definition FROM pg_rules
1306         WHERE schemaname = %s
1307           AND tablename = %s
1308           AND rulename = %s
1309 END;
1310         $r = $wgDatabase->query( sprintf( $q,
1311                         $wgDatabase->addQuotes( $wgDBmwschema ),
1312                         $wgDatabase->addQuotes( $table ),
1313                         $wgDatabase->addQuotes( $rule ) ) );
1314         $row = $wgDatabase->fetchRow( $r );
1315         if ( !$row ) {
1316                 return null;
1317         }
1318         $d = $row[0];
1319         $wgDatabase->freeResult( $r );
1320         return $d;
1321 }
1322
1323 function do_postgres_updates() {
1324         global $wgDatabase, $wgDBmwschema, $wgDBts2schema, $wgShowExceptionDetails, $wgDBuser;
1325
1326         # # Gather version numbers in case we need them
1327         $version = $wgDatabase->getServerVersion(); # # long string
1328         $numver = $wgDatabase->numeric_version; # # X.Y e.g. 8.3
1329
1330         $wgShowExceptionDetails = 1;
1331
1332         # Just in case their LocalSettings.php does not have this:
1333         if ( !isset( $wgDBmwschema ) ) {
1334                 $wgDBmwschema = 'mediawiki';
1335         }
1336
1337         # Verify that this user is configured correctly
1338         $safeuser = $wgDatabase->addQuotes( $wgDBuser );
1339         $SQL = "SELECT array_to_string(useconfig,'*') FROM pg_catalog.pg_user WHERE usename = $safeuser";
1340         $config = pg_fetch_result( $wgDatabase->doQuery( $SQL ), 0, 0 );
1341         $conf = array();
1342         foreach ( explode( '*', $config ) as $c ) {
1343                 list( $x, $y ) = explode( '=', $c );
1344                 $conf[$x] = $y;
1345         }
1346         if ( !array_key_exists( 'search_path', $conf ) ) {
1347                 $search_path = '';
1348         } else {
1349                 $search_path = $conf['search_path'];
1350         }
1351         if ( strpos( $search_path, $wgDBmwschema ) === false ) {
1352                 wfOut( "Adding in schema \"$wgDBmwschema\" to search_path for user \"$wgDBuser\"\n" );
1353                 $search_path = "$wgDBmwschema, $search_path";
1354         }
1355         if ( strpos( $search_path, $wgDBts2schema ) === false ) {
1356                 wfOut( "Adding in schema \"$wgDBts2schema\" to search_path for user \"$wgDBuser\"\n" );
1357                 $search_path = "$search_path, $wgDBts2schema";
1358         }
1359         $search_path = str_replace( ', ,', ',', $search_path );
1360         if ( array_key_exists( 'search_path', $conf ) === false || $search_path != $conf['search_path'] ) {
1361                 $wgDatabase->doQuery( "ALTER USER $wgDBuser SET search_path = $search_path" );
1362                 $wgDatabase->doQuery( "SET search_path = $search_path" );
1363         } else {
1364                 $path = $conf['search_path'];
1365                 wfOut( "... search_path for user \"$wgDBuser\" looks correct ($path)\n" );
1366         }
1367         $goodconf = array(
1368                 'client_min_messages' => 'error',
1369                 'DateStyle'           => 'ISO, YMD',
1370                 'TimeZone'            => 'GMT'
1371         );
1372         foreach ( array_keys( $goodconf ) AS $key ) {
1373                 $value = $goodconf[$key];
1374                 if ( !array_key_exists( $key, $conf ) or $conf[$key] !== $value ) {
1375                         wfOut( "Setting $key to '$value' for user \"$wgDBuser\"\n" );
1376                         $wgDatabase->doQuery( "ALTER USER $wgDBuser SET $key = '$value'" );
1377                         $wgDatabase->doQuery( "SET $key = '$value'" );
1378                 } else {
1379                         wfOut( "... default value of \"$key\" is correctly set to \"$value\" for user \"$wgDBuser\"\n" );
1380                 }
1381         }
1382
1383         $newsequences = array(
1384                 "logging_log_id_seq",
1385                 "page_restrictions_pr_id_seq",
1386         );
1387
1388         $newtables = array(
1389                 array( "category",          "patch-category.sql" ),
1390                 array( "mwuser",            "patch-mwuser.sql" ),
1391                 array( "pagecontent",       "patch-pagecontent.sql" ),
1392                 array( "querycachetwo",     "patch-querycachetwo.sql" ),
1393                 array( "page_props",        "patch-page_props.sql" ),
1394                 array( "page_restrictions", "patch-page_restrictions.sql" ),
1395                 array( "profiling",         "patch-profiling.sql" ),
1396                 array( "protected_titles",  "patch-protected_titles.sql" ),
1397                 array( "redirect",          "patch-redirect.sql" ),
1398                 array( "updatelog",         "patch-updatelog.sql" ),
1399                 array( 'change_tag',        'patch-change_tag.sql' ),
1400                 array( 'tag_summary',       'patch-change_tag.sql' ),
1401                 array( 'valid_tag',         'patch-change_tag.sql' ),
1402                 array( 'user_properties',   'patch-user_properties.sql' ),
1403                 array( 'log_search',        'patch-log_search.sql' ),
1404                 array( 'l10n_cache',        'patch-l10n_cache.sql' ),
1405                 array( 'iwlinks',           'patch-iwlinks.sql' ),
1406         );
1407
1408         $newcols = array(
1409                 array( "archive",       "ar_deleted",           "SMALLINT NOT NULL DEFAULT 0" ),
1410                 array( "archive",       "ar_len",               "INTEGER" ),
1411                 array( "archive",       "ar_page_id",           "INTEGER" ),
1412                 array( "archive",       "ar_parent_id",         "INTEGER" ),
1413                 array( "image",         "img_sha1",             "TEXT NOT NULL DEFAULT ''" ),
1414                 array( "ipblocks",      "ipb_allow_usertalk",   "SMALLINT NOT NULL DEFAULT 0" ),
1415                 array( "ipblocks",      "ipb_anon_only",        "SMALLINT NOT NULL DEFAULT 0" ),
1416                 array( "ipblocks",      "ipb_by_text",          "TEXT NOT NULL DEFAULT ''" ),
1417                 array( "ipblocks",      "ipb_block_email",      "SMALLINT NOT NULL DEFAULT 0" ),
1418                 array( "ipblocks",      "ipb_create_account",   "SMALLINT NOT NULL DEFAULT 1" ),
1419                 array( "ipblocks",      "ipb_deleted",          "SMALLINT NOT NULL DEFAULT 0" ),
1420                 array( "ipblocks",      "ipb_enable_autoblock", "SMALLINT NOT NULL DEFAULT 1" ),
1421                 array( "filearchive",   "fa_deleted",           "SMALLINT NOT NULL DEFAULT 0" ),
1422                 array( "logging",       "log_deleted",          "SMALLINT NOT NULL DEFAULT 0" ),
1423                 array( "logging",       "log_id",               "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('logging_log_id_seq')" ),
1424                 array( "logging",       "log_params",           "TEXT" ),
1425                 array( "mwuser",        "user_editcount",       "INTEGER" ),
1426                 array( "mwuser",        "user_hidden",          "SMALLINT NOT NULL DEFAULT 0" ),
1427                 array( "mwuser",        "user_newpass_time",    "TIMESTAMPTZ" ),
1428                 array( "oldimage",      "oi_deleted",           "SMALLINT NOT NULL DEFAULT 0" ),
1429                 array( "oldimage",      "oi_major_mime",        "TEXT NOT NULL DEFAULT 'unknown'" ),
1430                 array( "oldimage",      "oi_media_type",        "TEXT" ),
1431                 array( "oldimage",      "oi_metadata",          "BYTEA NOT NULL DEFAULT ''" ),
1432                 array( "oldimage",      "oi_minor_mime",        "TEXT NOT NULL DEFAULT 'unknown'" ),
1433                 array( "oldimage",      "oi_sha1",              "TEXT NOT NULL DEFAULT ''" ),
1434                 array( "page_restrictions", "pr_id",            "INTEGER NOT NULL UNIQUE DEFAULT nextval('page_restrictions_pr_id_val')" ),
1435                 array( "profiling",     "pf_memory",            "NUMERIC(18,10) NOT NULL DEFAULT 0" ),
1436                 array( "recentchanges", "rc_deleted",           "SMALLINT NOT NULL DEFAULT 0" ),
1437                 array( "recentchanges", "rc_log_action",        "TEXT" ),
1438                 array( "recentchanges", "rc_log_type",          "TEXT" ),
1439                 array( "recentchanges", "rc_logid",             "INTEGER NOT NULL DEFAULT 0" ),
1440                 array( "recentchanges", "rc_new_len",           "INTEGER" ),
1441                 array( "recentchanges", "rc_old_len",           "INTEGER" ),
1442                 array( "recentchanges", "rc_params",            "TEXT" ),
1443                 array( "redirect",      "rd_interwiki",         "TEXT NULL" ),
1444                 array( "redirect",      "rd_fragment",          "TEXT NULL" ),
1445                 array( "revision",      "rev_deleted",          "SMALLINT NOT NULL DEFAULT 0" ),
1446                 array( "revision",      "rev_len",              "INTEGER" ),
1447                 array( "revision",      "rev_parent_id",        "INTEGER DEFAULT NULL" ),
1448                 array( "site_stats",    "ss_active_users",      "INTEGER DEFAULT '-1'" ),
1449                 array( "user_newtalk",  "user_last_timestamp",  "TIMESTAMPTZ" ),
1450                 array( "logging",       "log_user_text",        "TEXT NOT NULL DEFAULT ''" ),
1451                 array( "logging",       "log_page",             "INTEGER" ),
1452                 array( "interwiki",     "iw_api",               "TEXT NOT NULL DEFAULT ''"),
1453                 array( "interwiki",     "iw_wikiid",            "TEXT NOT NULL DEFAULT ''"),
1454         );
1455
1456
1457         # table, column, desired type, USING clause if needed (with new default if needed)
1458         $typechanges = array(
1459                 array( "archive",      "ar_deleted",      "smallint", "" ),
1460                 array( "archive",      "ar_minor_edit",   "smallint", "ar_minor_edit::smallint DEFAULT 0" ),
1461                 array( "filearchive",  "fa_deleted",      "smallint", "" ),
1462                 array( "filearchive",  "fa_height",       "integer",  "" ),
1463                 array( "filearchive",  "fa_metadata",     "bytea",    "decode(fa_metadata,'escape')" ),
1464                 array( "filearchive",  "fa_size",         "integer",  "" ),
1465                 array( "filearchive",  "fa_width",        "integer",  "" ),
1466                 array( "filearchive",  "fa_storage_group", "text",     "" ),
1467                 array( "filearchive",  "fa_storage_key",  "text",     "" ),
1468                 array( "image",        "img_metadata",    "bytea",    "decode(img_metadata,'escape')" ),
1469                 array( "image",        "img_size",        "integer",  "" ),
1470                 array( "image",        "img_width",       "integer",  "" ),
1471                 array( "image",        "img_height",      "integer",  "" ),
1472                 array( "interwiki",    "iw_local",        "smallint", "iw_local::smallint DEFAULT 0" ),
1473                 array( "interwiki",    "iw_trans",        "smallint", "iw_trans::smallint DEFAULT 0" ),
1474                 array( "ipblocks",     "ipb_auto",        "smallint", "ipb_auto::smallint DEFAULT 0" ),
1475                 array( "ipblocks",     "ipb_anon_only",   "smallint", "CASE WHEN ipb_anon_only=' ' THEN 0 ELSE ipb_anon_only::smallint END DEFAULT 0" ),
1476                 array( "ipblocks",     "ipb_create_account", "smallint", "CASE WHEN ipb_create_account=' ' THEN 0 ELSE ipb_create_account::smallint END DEFAULT 1" ),
1477                 array( "ipblocks",     "ipb_enable_autoblock", "smallint", "CASE WHEN ipb_enable_autoblock=' ' THEN 0 ELSE ipb_enable_autoblock::smallint END DEFAULT 1" ),
1478                 array( "ipblocks",     "ipb_block_email", "smallint", "CASE WHEN ipb_block_email=' ' THEN 0 ELSE ipb_block_email::smallint END DEFAULT 0" ),
1479                 array( "ipblocks",     "ipb_address",     "text",     "ipb_address::text" ),
1480                 array( "ipblocks",     "ipb_deleted",     "smallint", "ipb_deleted::smallint DEFAULT 0" ),
1481                 array( "math",         "math_inputhash",  "bytea",    "decode(math_inputhash,'escape')" ),
1482                 array( "math",         "math_outputhash", "bytea",    "decode(math_outputhash,'escape')" ),
1483                 array( "mwuser",       "user_token",      "text",     "" ),
1484                 array( "mwuser",       "user_email_token", "text",     "" ),
1485                 array( "objectcache",  "keyname",         "text",     "" ),
1486                 array( "oldimage",     "oi_height",       "integer",  "" ),
1487                 array( "oldimage",     "oi_metadata",     "bytea",    "decode(img_metadata,'escape')" ),
1488                 array( "oldimage",     "oi_size",         "integer",  "" ),
1489                 array( "oldimage",     "oi_width",        "integer",  "" ),
1490                 array( "page",         "page_is_redirect", "smallint", "page_is_redirect::smallint DEFAULT 0" ),
1491                 array( "page",         "page_is_new",     "smallint", "page_is_new::smallint DEFAULT 0" ),
1492                 array( "querycache",   "qc_value",        "integer",  "" ),
1493                 array( "querycachetwo", "qcc_value",       "integer",  "" ),
1494                 array( "recentchanges", "rc_bot",          "smallint", "rc_bot::smallint DEFAULT 0" ),
1495                 array( "recentchanges", "rc_deleted",      "smallint", "" ),
1496                 array( "recentchanges", "rc_minor",        "smallint", "rc_minor::smallint DEFAULT 0" ),
1497                 array( "recentchanges", "rc_new",          "smallint", "rc_new::smallint DEFAULT 0" ),
1498                 array( "recentchanges", "rc_type",         "smallint", "rc_type::smallint DEFAULT 0" ),
1499                 array( "recentchanges", "rc_patrolled",    "smallint", "rc_patrolled::smallint DEFAULT 0" ),
1500                 array( "revision",     "rev_deleted",     "smallint", "rev_deleted::smallint DEFAULT 0" ),
1501                 array( "revision",     "rev_minor_edit",  "smallint", "rev_minor_edit::smallint DEFAULT 0" ),
1502                 array( "templatelinks", "tl_namespace",    "smallint", "tl_namespace::smallint" ),
1503                 array( "user_newtalk", "user_ip",         "text",     "host(user_ip)" ),
1504         );
1505
1506         # table, column, nullability
1507         $nullchanges = array(
1508                 array( "oldimage", "oi_bits",       "NULL" ),
1509                 array( "oldimage", "oi_timestamp",  "NULL" ),
1510                 array( "oldimage", "oi_major_mime", "NULL" ),
1511                 array( "oldimage", "oi_minor_mime", "NULL" ),
1512         );
1513
1514         $newindexes = array(
1515                 array( "archive",       "archive_user_text",  "(ar_user_text)" ),
1516                 array( "image",         "img_sha1",           "(img_sha1)" ),
1517                 array( "oldimage",      "oi_sha1",            "(oi_sha1)" ),
1518                 array( "revision",      "rev_text_id_idx",    "(rev_text_id)" ),
1519                 array( "recentchanges", "rc_timestamp_bot",   "(rc_timestamp) WHERE rc_bot = 0" ),
1520                 array( "templatelinks", "templatelinks_from", "(tl_from)" ),
1521                 array( "watchlist",     "wl_user",            "(wl_user)" ),
1522                 array( "logging",       "logging_user_type_time", "(log_user, log_type, log_timestamp)" ),
1523                 array( "logging",       "logging_page_id_time",   "(log_page,log_timestamp)" ),
1524                 array( "iwlinks",       "iwl_prefix_title_from",  "(iwl_prefix, iwl_title, iwl_from)" ),
1525         );
1526
1527         $newrules = array(
1528         );
1529
1530         # # All FK columns should be deferred
1531         $deferredcols = array(
1532                 array( "archive",          "ar_user",         "mwuser(user_id) ON DELETE SET NULL" ),
1533                 array( "categorylinks",    "cl_from",         "page(page_id) ON DELETE CASCADE" ),
1534                 array( "externallinks",    "el_from",         "page(page_id) ON DELETE CASCADE" ),
1535                 array( "filearchive",      "fa_deleted_user", "mwuser(user_id) ON DELETE SET NULL" ),
1536                 array( "filearchive",      "fa_user",         "mwuser(user_id) ON DELETE SET NULL" ),
1537                 array( "image",            "img_user",        "mwuser(user_id) ON DELETE SET NULL" ),
1538                 array( "imagelinks",       "il_from",         "page(page_id) ON DELETE CASCADE" ),
1539                 array( "ipblocks",         "ipb_by",          "mwuser(user_id) ON DELETE CASCADE" ),
1540                 array( "ipblocks",         "ipb_user",        "mwuser(user_id) ON DELETE SET NULL" ),
1541                 array( "langlinks",        "ll_from",         "page(page_id) ON DELETE CASCADE" ),
1542                 array( "logging",          "log_user",        "mwuser(user_id) ON DELETE SET NULL" ),
1543                 array( "oldimage",         "oi_name",         "image(img_name) ON DELETE CASCADE ON UPDATE CASCADE" ),
1544                 array( "oldimage",         "oi_user",         "mwuser(user_id) ON DELETE SET NULL" ),
1545                 array( "pagelinks",        "pl_from",         "page(page_id) ON DELETE CASCADE" ),
1546                 array( "page_props",       "pp_page",         "page (page_id) ON DELETE CASCADE" ),
1547                 array( "page_restrictions", "pr_page",         "page(page_id) ON DELETE CASCADE" ),
1548                 array( "protected_titles", "pt_user",         "mwuser(user_id) ON DELETE SET NULL" ),
1549                 array( "recentchanges",    "rc_cur_id",       "page(page_id) ON DELETE SET NULL" ),
1550                 array( "recentchanges",    "rc_user",         "mwuser(user_id) ON DELETE SET NULL" ),
1551                 array( "redirect",         "rd_from",         "page(page_id) ON DELETE CASCADE" ),
1552                 array( "revision",         "rev_page",        "page (page_id) ON DELETE CASCADE" ),
1553                 array( "revision",         "rev_user",        "mwuser(user_id) ON DELETE RESTRICT" ),
1554                 array( "templatelinks",    "tl_from",         "page(page_id) ON DELETE CASCADE" ),
1555                 array( "trackbacks",       "tb_page",         "page(page_id) ON DELETE CASCADE" ),
1556                 array( "user_groups",      "ug_user",         "mwuser(user_id) ON DELETE CASCADE" ),
1557                 array( "user_newtalk",     "user_id",         "mwuser(user_id) ON DELETE CASCADE" ),
1558                 array( "user_properties",  "up_user",         "mwuser(user_id) ON DELETE CASCADE" ),
1559                 array( "watchlist",        "wl_user",         "mwuser(user_id) ON DELETE CASCADE" ),
1560         );
1561
1562         # Check new sequences, rename if needed
1563         foreach ( $newsequences as $ns ) {
1564                 if ( $wgDatabase->sequenceExists( 'pr_id_val' ) ) {
1565                         wfOut( "Updating sequence names\n" );
1566                         $wgDatabase->sourceFile( archive( 'patch-update_sequences.sql' ) );
1567                         continue;
1568                 } elseif ( $wgDatabase->sequenceExists( 'page_restrictions_pr_id_seq' ) ) {
1569                         wfOut( "... sequences already updated\n" );
1570                         continue;
1571                 } else {
1572                         wfOut( "Creating sequence \"$ns\"\n" );
1573                         $wgDatabase->query( "CREATE SEQUENCE $ns" );
1574                 }
1575         }
1576
1577         foreach ( $newtables as $nt ) {
1578                 if ( $wgDatabase->tableExists( $nt[0] ) ) {
1579                         wfOut( "... table \"$nt[0]\" already exists\n" );
1580                         continue;
1581                 }
1582
1583                 wfOut( "Creating table \"$nt[0]\"\n" );
1584                 $wgDatabase->sourceFile( archive( $nt[1] ) );
1585         }
1586
1587         # # Needed before newcols
1588         if ( $wgDatabase->tableExists( "archive2" ) ) {
1589                 wfOut( "Converting \"archive2\" back to normal archive table\n" );
1590                 if ( $wgDatabase->ruleExists( "archive", "archive_insert" ) ) {
1591                         wfOut( "Dropping rule \"archive_insert\"\n" );
1592                         $wgDatabase->query( "DROP RULE archive_insert ON archive" );
1593                 }
1594                 if ( $wgDatabase->ruleExists( "archive", "archive_delete" ) ) {
1595                         wfOut( "Dropping rule \"archive_delete\"\n" );
1596                         $wgDatabase->query( "DROP RULE archive_delete ON archive" );
1597                 }
1598                 $wgDatabase->sourceFile( archive( "patch-remove-archive2.sql" ) );
1599         }
1600         else
1601                 wfOut( "... obsolete table \"archive2\" does not exist\n" );
1602
1603         foreach ( $newcols as $nc ) {
1604                 $fi = $wgDatabase->fieldInfo( $nc[0], $nc[1] );
1605                 if ( !is_null( $fi ) ) {
1606                         wfOut( "... column \"$nc[0].$nc[1]\" already exists\n" );
1607                         continue;
1608                 }
1609
1610                 wfOut( "Adding column \"$nc[0].$nc[1]\"\n" );
1611                 $wgDatabase->query( "ALTER TABLE $nc[0] ADD $nc[1] $nc[2]" );
1612         }
1613
1614         foreach ( $typechanges as $tc ) {
1615                 $fi = $wgDatabase->fieldInfo( $tc[0], $tc[1] );
1616                 if ( is_null( $fi ) ) {
1617                         wfOut( "... error: expected column $tc[0].$tc[1] to exist\n" );
1618                         exit( 1 );
1619                 }
1620
1621                 if ( $fi->type() === $tc[2] )
1622                         wfOut( "... column \"$tc[0].$tc[1]\" is already of type \"$tc[2]\"\n" );
1623                 else {
1624                         wfOut( "Changing column type of \"$tc[0].$tc[1]\" from \"{$fi->type()}\" to \"$tc[2]\"\n" );
1625                         $sql = "ALTER TABLE $tc[0] ALTER $tc[1] TYPE $tc[2]";
1626                         if ( strlen( $tc[3] ) ) {
1627                                 $default = array();
1628                                 if ( preg_match( '/DEFAULT (.+)/', $tc[3], $default ) ) {
1629                                         $sqldef = "ALTER TABLE $tc[0] ALTER $tc[1] SET DEFAULT $default[1]";
1630                                         $wgDatabase->query( $sqldef );
1631                                         $tc[3] = preg_replace( '/\s*DEFAULT .+/', '', $tc[3] );
1632                                 }
1633                                 $sql .= " USING $tc[3]";
1634                         }
1635                         $sql .= ";\nCOMMIT;\n";
1636                         $wgDatabase->query( $sql );
1637                 }
1638         }
1639
1640         foreach ( $nullchanges as $nc ) {
1641                 $fi = $wgDatabase->fieldInfo( $nc[0], $nc[1] );
1642                 if ( is_null( $fi ) ) {
1643                         wfOut( "... error: expected column $nc[0].$nc[1] to exist\n" );
1644                         exit( 1 );
1645                 }
1646                 if ( $fi->nullable() ) {
1647                         # # It's NULL - does it need to be NOT NULL?
1648                         if ( 'NOT NULL' === $nc[2] ) {
1649                                 wfOut( "Changing \"$nc[0].$nc[1]\" to not allow NULLs\n" );
1650                                 $wgDatabase->query( "ALTER TABLE $nc[0] ALTER $nc[1] SET NOT NULL" );
1651                         } else {
1652                                 wfOut( "... column \"$nc[0].$nc[1]\" is already set as NULL\n" );
1653                         }
1654                 } else {
1655                         # # It's NOT NULL - does it need to be NULL?
1656                         if ( 'NULL' === $nc[2] ) {
1657                                 wfOut( "Changing \"$nc[0].$nc[1]\" to allow NULLs\n" );
1658                                 $wgDatabase->query( "ALTER TABLE $nc[0] ALTER $nc[1] DROP NOT NULL" );
1659                         }
1660                         else {
1661                                 wfOut( "... column \"$nc[0].$nc[1]\" is already set as NOT NULL\n" );
1662                         }
1663                 }
1664         }
1665
1666         if ( $wgDatabase->fieldInfo( 'oldimage', 'oi_deleted' )->type() !== 'smallint' ) {
1667                 wfOut( "Changing \"oldimage.oi_deleted\" to type \"smallint\"\n" );
1668                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted DROP DEFAULT" );
1669                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted TYPE SMALLINT USING (oi_deleted::smallint)" );
1670                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted SET DEFAULT 0" );
1671         } else {
1672                 wfOut( "... column \"oldimage.oi_deleted\" is already of type \"smallint\"\n" );
1673         }
1674
1675         foreach ( $newindexes as $ni ) {
1676                 if ( pg_index_exists( $ni[0], $ni[1] ) ) {
1677                         wfOut( "... index \"$ni[1]\" on table \"$ni[0]\" already exists\n" );
1678                         continue;
1679                 }
1680                 wfOut( "Creating index \"$ni[1]\" on table \"$ni[0]\" $ni[2]\n" );
1681                 $wgDatabase->query( "CREATE INDEX $ni[1] ON $ni[0] $ni[2]" );
1682         }
1683
1684         foreach ( $newrules as $nr ) {
1685                 if ( $wgDatabase->ruleExists( $nr[0], $nr[1] ) ) {
1686                         wfOut( "... rule \"$nr[1]\" on table \"$nr[0]\" already exists\n" );
1687                         continue;
1688                 }
1689                 wfOut( "Adding rule \"$nr[1]\" to table \"$nr[0]\"\n" );
1690                 $wgDatabase->sourceFile( archive( $nr[2] ) );
1691         }
1692
1693         if ( $wgDatabase->hasConstraint( "oldimage_oi_name_fkey_cascaded" ) ) {
1694                 wfOut( "... table \"oldimage\" has correct cascading delete/update foreign key to image\n" );
1695         } else {
1696                 if ( $wgDatabase->hasConstraint( "oldimage_oi_name_fkey" ) ) {
1697                         $wgDatabase->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey" );
1698                 }
1699                 if ( $wgDatabase->hasConstraint( "oldimage_oi_name_fkey_cascade" ) ) {
1700                         $wgDatabase->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey_cascade" );
1701                 }
1702                 wfOut( "Making foreign key on table \"oldimage\" (to image) a cascade delete/update\n" );
1703                 $wgDatabase->query( "ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascaded " .
1704                         "FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE ON UPDATE CASCADE" );
1705         }
1706
1707         if ( !$wgDatabase->triggerExists( "page", "page_deleted" ) ) {
1708                 wfOut( "Adding function and trigger \"page_deleted\" to table \"page\"\n" );
1709                 $wgDatabase->sourceFile( archive( 'patch-page_deleted.sql' ) );
1710         } else {
1711                 wfOut( "... table \"page\" has \"page_deleted\" trigger\n" );
1712         }
1713
1714         $fi = $wgDatabase->fieldInfo( "recentchanges", "rc_cur_id" );
1715         if ( !$fi->nullable() ) {
1716                 wfOut( "Removing NOT NULL constraint from \"recentchanges.rc_cur_id\"\n" );
1717                 $wgDatabase->sourceFile( archive( 'patch-rc_cur_id-not-null.sql' ) );
1718         } else {
1719                 wfOut( "... column \"recentchanges.rc_cur_id\" has a NOT NULL constraint\n" );
1720         }
1721
1722         $pu = pg_describe_index( "pagelink_unique" );
1723         if ( !is_null( $pu ) && ( $pu[0] != "pl_from" || $pu[1] != "pl_namespace" || $pu[2] != "pl_title" ) ) {
1724                 wfOut( "Dropping obsolete version of index \"pagelink_unique index\"\n" );
1725                 $wgDatabase->query( "DROP INDEX pagelink_unique" );
1726                 $pu = null;
1727         } else {
1728                 wfOut( "... obsolete version of index \"pagelink_unique index\" does not exist\n" );
1729         }
1730
1731         if ( is_null( $pu ) ) {
1732                 wfOut( "Creating index \"pagelink_unique index\"\n" );
1733                 $wgDatabase->query( "CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title)" );
1734         } else {
1735                 wfOut( "... index \"pagelink_unique_index\" already exists\n" );
1736         }
1737
1738         if ( pg_fkey_deltype( "revision_rev_user_fkey" ) == 'r' ) {
1739                 wfOut( "... constraint \"revision_rev_user_fkey\" is ON DELETE RESTRICT\n" );
1740         } else {
1741                 wfOut( "Changing constraint \"revision_rev_user_fkey\" to ON DELETE RESTRICT\n" );
1742                 $wgDatabase->sourceFile( archive( 'patch-revision_rev_user_fkey.sql' ) );
1743         }
1744
1745         # Fix ipb_address index
1746         if ( pg_index_exists( 'ipblocks', 'ipb_address' ) ) {
1747                 wfOut( "Removing deprecated index 'ipb_address'...\n" );
1748                 $wgDatabase->query( 'DROP INDEX ipb_address' );
1749         }
1750         if ( pg_index_exists( 'ipblocks', 'ipb_address_unique' ) ) {
1751                 wfOut( "... have ipb_address_unique\n" );
1752         } else {
1753                 wfOut( "Adding ipb_address_unique index\n" );
1754                 $wgDatabase->sourceFile( archive( 'patch-ipb_address_unique.sql' ) );
1755         }
1756
1757         # Fix iwlinks index
1758         if ( pg_index_exists( 'iwlinks', 'iwl_prefix' ) ) {
1759                 wfOut( "Replacing index 'iwl_prefix' with 'iwl_prefix_from_title'...\n" );
1760                 $wgDatabase->sourceFile( archive( 'patch-rename-iwl_prefix.sql' ) );
1761         }
1762
1763         global $wgExtNewTables, $wgExtPGNewFields, $wgExtPGAlteredFields, $wgExtNewIndexes;
1764         # Add missing extension tables
1765         foreach ( $wgExtNewTables as $nt ) {
1766                 if ( $wgDatabase->tableExists( $nt[0] ) ) {
1767                         wfOut( "... table \"$nt[0]\" already exists\n" );
1768                         continue;
1769                 }
1770                 wfOut( "Creating table \"$nt[0]\"\n" );
1771                 $wgDatabase->sourceFile( $nt[1] );
1772         }
1773         # Add missing extension fields
1774         foreach ( $wgExtPGNewFields as $nc ) {
1775                 $fi = $wgDatabase->fieldInfo( $nc[0], $nc[1] );
1776                 if ( !is_null( $fi ) ) {
1777                         wfOut( "... column \"$nc[0].$nc[1]\" already exists\n" );
1778                         continue;
1779                 }
1780                 wfOut( "Adding column \"$nc[0].$nc[1]\"\n" );
1781                 $wgDatabase->query( "ALTER TABLE $nc[0] ADD $nc[1] $nc[2]" );
1782         }
1783         # Change altered columns
1784         foreach ( $wgExtPGAlteredFields as $nc ) {
1785                 $fi = $wgDatabase->fieldInfo( $nc[0], $nc[1] );
1786                 if ( is_null( $fi ) ) {
1787                         wfOut( "WARNING! Column \"$nc[0].$nc[1]\" does not exist but had an alter request! Please report this.\n" );
1788                         continue;
1789                 }
1790                 $oldtype = $fi->type();
1791                 $newtype = strtolower( $nc[2] );
1792                 if ( $oldtype === $newtype ) {
1793                         wfOut( "... column \"$nc[0].$nc[1]\" has correct type of \"$newtype\"\n" );
1794                         continue;
1795                 }
1796                 $command = "ALTER TABLE $nc[0] ALTER $nc[1] TYPE $nc[2]";
1797                 if ( isset( $nc[3] ) ) {
1798                         $command .= " USING $nc[3]";
1799                 }
1800                 wfOut( "Altering column \"$nc[0].$nc[1]\" from type \"$oldtype\" to \"$newtype\"\n" );
1801                 $wgDatabase->query( $command );
1802         }
1803         # Add missing extension indexes
1804         foreach ( $wgExtNewIndexes as $ni ) {
1805                 if ( pg_index_exists( $ni[0], $ni[1] ) ) {
1806                         wfOut( "... index \"$ni[1]\" on table \"$ni[0]\" already exists\n" );
1807                         continue;
1808                 }
1809                 wfOut( "Creating index \"$ni[1]\" on table \"$ni[0]\"\n" );
1810                 if ( preg_match( '/^\(/', $ni[2] ) ) {
1811                         $wgDatabase->query( "CREATE INDEX $ni[1] ON $ni[0] $ni[2]" );
1812                 }
1813                 else {
1814                         $wgDatabase->sourceFile( $ni[2] );
1815                 }
1816         }
1817
1818         foreach ( $deferredcols AS $dc ) {
1819                 $fi = $wgDatabase->fieldInfo( $dc[0], $dc[1] );
1820                 if ( is_null( $fi ) ) {
1821                         wfOut( "WARNING! Column \"$dc[0].$dc[1]\" does not exist but it should! Please report this.\n" );
1822                         continue;
1823                 }
1824                 if ( $fi->is_deferred() && $fi->is_deferrable() ) {
1825                         continue;
1826                 }
1827                 wfOut( "Altering column \"$dc[0].$dc[1]\" to be DEFERRABLE INITIALLY DEFERRED\n" );
1828                 $conname = $fi->conname();
1829                 $clause = $dc[2];
1830                 $command = "ALTER TABLE $dc[0] DROP CONSTRAINT $conname";
1831                 $wgDatabase->query( $command );
1832                 $command = "ALTER TABLE $dc[0] ADD CONSTRAINT $conname FOREIGN KEY ($dc[1]) REFERENCES $clause DEFERRABLE INITIALLY DEFERRED";
1833                 $wgDatabase->query( $command );
1834         }
1835
1836         # Tweak the page_title tsearch2 trigger to filter out slashes
1837         # This is create or replace, so harmless to call if not needed
1838         $wgDatabase->sourceFile( archive( 'patch-ts2pagetitle.sql' ) );
1839
1840         # # If the server is 8.3 or higher, rewrite the tsearch2 triggers
1841         # # in case they have the old 'default' versions
1842         if ( $numver >= 8.3 ) {
1843                 $wgDatabase->sourceFile( archive( 'patch-tsearch2funcs.sql' ) );
1844         }
1845         return;
1846 }