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