maintenance/updaters.inc

   1 <?php
   2 /**
   3  * @addtogroup Maintenance
   4  */
   5
   6  /** */
   7
   8 if ( !defined( 'MEDIAWIKI' ) ) {
   9         echo "This file is not a valid entry point\n";
  10         exit( 1 );
  11 }
  12
  13 require_once 'convertLinks.inc';
  14 require_once 'userDupes.inc';
  15 require_once 'deleteDefaultMessages.php';
  16 # Extension updates
  17 require_once( "$IP/includes/Hooks.php" );
  18
  19 /**
  20  * List of update functions to call on a MySQL-based MediaWiki installation,
  21  * in sequence. First item is function name, rest are parameters to pass.
  22  */
  23 $wgMysqlUpdates = array(
  24         // 1.2
  25         // update_passwords obsolete
  26         array( 'add_field', 'ipblocks',      'ipb_id',           'patch-ipblocks.sql' ),
  27         array( 'add_field', 'ipblocks',      'ipb_expiry',       'patch-ipb_expiry.sql' ),
  28         array( 'do_interwiki_update' ),
  29         array( 'do_index_update' ),
  30         // do_linkscc_update obsolete
  31         array( 'add_table', 'hitcounter',                        'patch-hitcounter.sql' ),
  32         array( 'add_field', 'recentchanges', 'rc_type',          'patch-rc_type.sql' ),
  33
  34         // 1.3
  35         array( 'add_field', 'user',          'user_real_name',   'patch-user-realname.sql' ),
  36         array( 'add_table', 'querycache',                        'patch-querycache.sql' ),
  37         array( 'add_table', 'objectcache',                       'patch-objectcache.sql' ),
  38         array( 'add_table', 'categorylinks',                     'patch-categorylinks.sql' ),
  39         // do_linkscc_1_3_update obsolete
  40         array( 'do_old_links_update' ),
  41         array( 'add_field', 'recentchanges', 'rc_ip',            'patch-rc_ip.sql' ),
  42
  43         // 1.4
  44         array( 'do_image_name_unique_update' ),
  45         array( 'add_field', 'recentchanges', 'rc_id',            'patch-rc_id.sql' ),
  46         array( 'add_field', 'recentchanges', 'rc_patrolled',     'patch-rc-patrol.sql' ),
  47         array( 'add_table', 'logging',                           'patch-logging.sql' ),
  48         // do_user_rights_update obsolete
  49         array( 'add_field', 'user',          'user_token',       'patch-user_token.sql' ),
  50         // old, old_articleid, patch-remove-old-title-namespace.sql obsolete
  51         // user_groups, patch-userlevels.sql obsolete
  52         // do_group_update() obsolete
  53         array( 'do_watchlist_update' ),
  54         array( 'do_user_update' ),
  55         // do_copy_newtalk_to_watchlist obsolete
  56
  57         // 1.5
  58         array( 'do_schema_restructuring' ),
  59         array( 'add_field', 'logging',       'log_params',       'patch-log_params.sql' ),
  60         array( 'do_logging_encoding' ),
  61         array( 'add_field', 'archive',       'ar_rev_id',        'patch-archive-rev_id.sql' ),
  62         array( 'add_field', 'page',          'page_len',         'patch-page_len.sql' ),
  63         array( 'do_inverse_timestamp' ),
  64         array( 'do_text_id' ),
  65         array( 'add_field', 'revision',      'rev_deleted',      'patch-rev_deleted.sql' ),
  66         array( 'add_field', 'image',         'img_width',        'patch-img_width.sql' ),
  67         array( 'add_field', 'image',         'img_metadata',     'patch-img_metadata.sql' ),
  68         array( 'add_field', 'user',          'user_email_token', 'patch-user_email_token.sql' ),
  69         array( 'add_field', 'archive',       'ar_text_id',       'patch-archive-text_id.sql' ),
  70         array( 'do_namespace_size' ),
  71         array( 'add_field', 'image',         'img_media_type',   'patch-img_media_type.sql' ),
  72         array( 'do_pagelinks_update' ),
  73         array( 'do_drop_img_type' ),
  74         array( 'do_user_unique_update' ),
  75         array( 'do_user_groups_update' ),
  76         array( 'add_field', 'site_stats',    'ss_total_pages',   'patch-ss_total_articles.sql' ),
  77         array( 'add_table', 'user_newtalk',                      'patch-usernewtalk2.sql' ),
  78         array( 'add_table', 'transcache',                        'patch-transcache.sql' ),
  79         array( 'add_field', 'interwiki',     'iw_trans',         'patch-interwiki-trans.sql' ),
  80         array( 'add_table', 'trackbacks',                        'patch-trackbacks.sql' ),
  81
  82         // 1.6
  83         array( 'do_watchlist_null' ),
  84         // do_image_index_update obsolete
  85         array( 'do_logging_timestamp_index' ),
  86         array( 'add_field', 'ipblocks',        'ipb_range_start',  'patch-ipb_range_start.sql' ),
  87         array( 'do_page_random_update' ),
  88         array( 'add_field', 'user',            'user_registration','patch-user_registration.sql' ),
  89         array( 'do_templatelinks_update' ),
  90         array( 'add_table', 'externallinks',                       'patch-externallinks.sql' ),
  91         array( 'add_table', 'job',                                 'patch-job.sql' ),
  92         array( 'add_field', 'site_stats',      'ss_images',        'patch-ss_images.sql' ),
  93         array( 'add_table', 'langlinks',                           'patch-langlinks.sql' ),
  94         array( 'add_table', 'querycache_info',                     'patch-querycacheinfo.sql' ),
  95         array( 'add_table', 'filearchive',                         'patch-filearchive.sql' ),
  96         array( 'add_field', 'ipblocks',        'ipb_anon_only',    'patch-ipb_anon_only.sql' ),
  97         array( 'do_rc_indices_update' ),
  98
  99         // 1.9
 100         array( 'add_field', 'user',          'user_newpass_time', 'patch-user_newpass_time.sql' ),
 101         array( 'add_table', 'redirect',                           'patch-redirect.sql' ),
 102         array( 'add_table', 'querycachetwo', 'patch-querycachetwo.sql' ),
 103         array( 'add_field', 'ipblocks',      'ipb_enable_autoblock', 'patch-ipb_optional_autoblock.sql' ),
 104         array( 'do_backlinking_indices_update' ),
 105         array( 'add_field', 'recentchanges', 'rc_old_len',        'patch-rc_len.sql' ),
 106         array( 'add_field', 'user',          'user_editcount',    'patch-user_editcount.sql' ),
 107
 108         // 1.10
 109         array( 'do_restrictions_update' ),
 110         array( 'add_field', 'logging',       'log_id',           'patch-log_id.sql' ),
 111         array( 'add_field', 'revision',      'rev_parent_id',    'patch-rev_parent_id.sql' ),
 112         array( 'add_field', 'page_restrictions', 'pr_id',        'patch-page_restrictions_sortkey.sql' ),
 113         array( 'add_field', 'revision',      'rev_len',          'patch-rev_len.sql' ),
 114         array( 'add_field', 'recentchanges', 'rc_deleted',       'patch-rc_deleted.sql' ),
 115         array( 'add_field', 'logging',       'log_deleted',      'patch-log_deleted.sql' ),
 116         array( 'add_field', 'archive',       'ar_deleted',       'patch-ar_deleted.sql' ),
 117         array( 'add_field', 'ipblocks',      'ipb_deleted',      'patch-ipb_deleted.sql' ),
 118         array( 'add_field', 'filearchive',   'fa_deleted',       'patch-fa_deleted.sql' ),
 119         array( 'add_field', 'archive',       'ar_len',           'patch-ar_len.sql' ),
 120
 121         // 1.11
 122         array( 'add_field', 'ipblocks',      'ipb_block_email',  'patch-ipb_emailban.sql' ),
 123         array( 'do_categorylinks_indices_update' ),
 124         array( 'add_field', 'oldimage',      'oi_metadata',      'patch-oi_metadata.sql'),
 125         array( 'do_archive_user_index' ),
 126         array( 'do_image_user_index' ),
 127         array( 'do_oldimage_user_index' ),
 128         array( 'add_field', 'archive',       'ar_page_id',       'patch-archive-page_id.sql'),
 129         array( 'add_field', 'image',         'img_sha1',         'patch-img_sha1.sql' ),
 130         array( 'add_table', 'protected_titles',                  'patch-protected_titles.sql' ),
 131
 132         // 1.13
 133         array( 'add_field', 'ipblocks',      'ipb_by_text',      'patch-ipb_by_text.sql' ),
 134         array( 'add_table', 'page_props',                        'patch-page_props.sql' ),
 135         array( 'add_table', 'updatelog',                         'patch-updatelog.sql' ),
 136         array( 'add_table', 'category',                          'patch-category.sql' ),
 137         array( 'do_category_population' ),
 138 );
 139
 140
 141 # For extensions only, should be populated via hooks
 142 # $wgDBtype should be checked to specifiy the proper file
 143 $wgExtNewTables = array(); // table, dir
 144 $wgExtNewFields = array(); // table, column, dir
 145 $wgExtPGNewFields = array(); // table, column attributes; for PostgreSQL
 146 $wgExtNewIndexes = array(); // table, index, dir
 147
 148 # Helper function: check if the given key is present in the updatelog table.
 149 # Obviously, only use this for updates that occur after the updatelog table was
 150 # created!
 151 function update_row_exists( $key ) {
 152         $dbr = wfGetDB( DB_SLAVE );
 153         $row = $dbr->selectRow(
 154                 'updatelog',
 155                 '1',
 156                 array( 'ul_key' => $key ),
 157                 __FUNCTION__
 158         );
 159         return (bool)$row;
 160 }
 161
 162 function rename_table( $from, $to, $patch ) {
 163         global $wgDatabase;
 164         if ( $wgDatabase->tableExists( $from ) ) {
 165                 if ( $wgDatabase->tableExists( $to ) ) {
 166                         echo "...can't move table $from to $to, $to already exists.\n";
 167                 } else {
 168                         echo "Moving table $from to $to...";
 169                         dbsource( archive($patch), $wgDatabase );
 170                         echo "ok\n";
 171                 }
 172         } else {
 173                 // Source table does not exist
 174                 // Renames are done before creations, so this is typical for a new installation
 175                 // Ignore silently
 176         }
 177 }
 178
 179 function add_table( $name, $patch, $fullpath=false ) {
 180         global $wgDatabase;
 181         if ( $wgDatabase->tableExists( $name ) ) {
 182                 echo "...$name table already exists.\n";
 183         } else {
 184                 echo "Creating $name table...";
 185                 if( $fullpath ) {
 186                         dbsource( $patch, $wgDatabase );
 187                 } else {
 188                         dbsource( archive($patch), $wgDatabase );
 189                 }
 190                 echo "ok\n";
 191         }
 192 }
 193
 194 function add_field( $table, $field, $patch, $fullpath=false ) {
 195         global $wgDatabase;
 196         if ( !$wgDatabase->tableExists( $table ) ) {
 197                 echo "...$table table does not exist, skipping new field patch\n";
 198         } elseif ( $wgDatabase->fieldExists( $table, $field ) ) {
 199                 echo "...have $field field in $table table.\n";
 200         } else {
 201                 echo "Adding $field field to table $table...";
 202                 if( $fullpath ) {
 203                         dbsource( $patch, $wgDatabase );
 204                 } else {
 205                         dbsource( archive($patch), $wgDatabase );
 206                 }
 207                 echo "ok\n";
 208         }
 209 }
 210
 211 function add_index( $table, $index, $patch, $fullpath=false ) {
 212         global $wgDatabase;
 213         if( $wgDatabase->indexExists( $table, $index ) ) {
 214                 echo "...$index key already set on $table table.\n";
 215         } else {
 216                 echo "Adding $index key to table $table... ";
 217                 if( $fullpath ) {
 218                         dbsource( $patch, $wgDatabase );
 219                 } else {
 220                         dbsource( archive($patch), $wgDatabase );
 221                 }
 222                 echo "ok\n";
 223         }
 224 }
 225
 226 function do_revision_updates() {
 227         global $wgSoftwareRevision;
 228         if ( $wgSoftwareRevision < 1001 ) {
 229                 update_passwords();
 230         }
 231 }
 232
 233 function update_passwords() {
 234         wfDebugDieBacktrace( "This function needs to be updated or removed.\n" );
 235
 236         global $wgDatabase;
 237         $fname = "Update script: update_passwords()";
 238         print "\nIt appears that you need to update the user passwords in your\n" .
 239           "database. If you have already done this (if you've run this update\n" .
 240           "script once before, for example), doing so again will make all your\n" .
 241           "user accounts inaccessible, so be sure you only do this once.\n" .
 242           "Update user passwords? (yes/no)";
 243
 244         $resp = readconsole();
 245     if ( ! ( "Y" == $resp{0} || "y" == $resp{0} ) ) { return; }
 246
 247         $sql = "SELECT user_id,user_password FROM user";
 248         $source = $wgDatabase->query( $sql, $fname );
 249
 250         while ( $row = $wgDatabase->fetchObject( $source ) ) {
 251                 $id = $row->user_id;
 252                 $oldpass = $row->user_password;
 253                 $newpass = md5( "{$id}-{$oldpass}" );
 254
 255                 $sql = "UPDATE user SET user_password='{$newpass}' " .
 256                   "WHERE user_id={$id}";
 257                 $wgDatabase->query( $sql, $fname );
 258         }
 259 }
 260
 261 function do_interwiki_update() {
 262         # Check that interwiki table exists; if it doesn't source it
 263         global $wgDatabase, $IP;
 264         if( $wgDatabase->tableExists( "interwiki" ) ) {
 265                 echo "...already have interwiki table\n";
 266                 return true;
 267         }
 268         echo "Creating interwiki table: ";
 269         dbsource( archive("patch-interwiki.sql") );
 270         echo "ok\n";
 271         echo "Adding default interwiki definitions: ";
 272         dbsource( "$IP/maintenance/interwiki.sql" );
 273         echo "ok\n";
 274 }
 275
 276 function do_index_update() {
 277         # Check that proper indexes are in place
 278         global $wgDatabase;
 279         $meta = $wgDatabase->fieldInfo( "recentchanges", "rc_timestamp" );
 280         if( !$meta->isMultipleKey() ) {
 281                 echo "Updating indexes to 20031107: ";
 282                 dbsource( archive("patch-indexes.sql") );
 283                 echo "ok\n";
 284                 return true;
 285         }
 286         echo "...indexes seem up to 20031107 standards\n";
 287         return false;
 288 }
 289
 290 function do_image_index_update() {
 291         global $wgDatabase;
 292
 293         $meta = $wgDatabase->fieldInfo( "image", "img_major_mime" );
 294         if( !$meta->isMultipleKey() ) {
 295                 echo "Updating indexes to 20050912: ";
 296                 dbsource( archive("patch-mimesearch-indexes.sql") );
 297                 echo "ok\n";
 298                 return true;
 299         }
 300         echo "...indexes seem up to 20050912 standards\n";
 301         return false;
 302 }
 303
 304 function do_image_name_unique_update() {
 305         global $wgDatabase;
 306         if( $wgDatabase->indexExists( 'image', 'PRIMARY' ) ) {
 307                 echo "...image primary key already set.\n";
 308         } else {
 309                 echo "Making img_name the primary key... ";
 310                 dbsource( archive("patch-image_name_primary.sql"), $wgDatabase );
 311                 echo "ok\n";
 312         }
 313 }
 314
 315 function do_logging_timestamp_index() {
 316         global $wgDatabase;
 317         if( $wgDatabase->indexExists( 'logging', 'times' ) ) {
 318                 echo "...timestamp key on logging already exists.\n";
 319         } else {
 320                 echo "Adding timestamp key on logging table... ";
 321                 dbsource( archive("patch-logging-times-index.sql"), $wgDatabase );
 322                 echo "ok\n";
 323         }
 324 }
 325
 326 function do_archive_user_index() {
 327         global $wgDatabase;
 328         if( $wgDatabase->indexExists( 'archive', 'usertext_timestamp' ) ) {
 329                 echo "...usertext,timestamp key on archive already exists.\n";
 330         } else {
 331                 echo "Adding usertext,timestamp key on archive table... ";
 332                 dbsource( archive("patch-archive-user-index.sql"), $wgDatabase );
 333                 echo "ok\n";
 334         }
 335 }
 336
 337 function do_image_user_index() {
 338         global $wgDatabase;
 339         if( $wgDatabase->indexExists( 'image', 'img_usertext_timestamp' ) ) {
 340                 echo "...usertext,timestamp key on image already exists.\n";
 341         } else {
 342                 echo "Adding usertext,timestamp key on image table... ";
 343                 dbsource( archive("patch-image-user-index.sql"), $wgDatabase );
 344                 echo "ok\n";
 345         }
 346 }
 347
 348 function do_oldimage_user_index() {
 349         global $wgDatabase;
 350         if( $wgDatabase->indexExists( 'oldimage', 'oi_usertext_timestamp' ) ) {
 351                 echo "...usertext,timestamp key on oldimage already exists.\n";
 352         } else {
 353                 echo "Adding usertext,timestamp key on oldimage table... ";
 354                 dbsource( archive("patch-oldimage-user-index.sql"), $wgDatabase );
 355                 echo "ok\n";
 356         }
 357 }
 358
 359 function do_watchlist_update() {
 360         global $wgDatabase;
 361         $fname = 'do_watchlist_update';
 362         if( $wgDatabase->fieldExists( 'watchlist', 'wl_notificationtimestamp' ) ) {
 363                 echo "The watchlist table is already set up for email notification.\n";
 364         } else {
 365                 echo "Adding wl_notificationtimestamp field for email notification management.";
 366                 /* ALTER TABLE watchlist ADD (wl_notificationtimestamp varchar(14) binary NOT NULL default '0'); */
 367                 dbsource( archive( 'patch-email-notification.sql' ), $wgDatabase );
 368                 echo "ok\n";
 369         }
 370         # Check if we need to add talk page rows to the watchlist
 371         $talk = $wgDatabase->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', $fname );
 372         $nontalk = $wgDatabase->selectField( 'watchlist', 'count(*)', 'NOT (wl_namespace & 1)', $fname );
 373         if ( $talk != $nontalk ) {
 374                 echo "Adding missing watchlist talk page rows... ";
 375                 flush();
 376
 377                 $wgDatabase->insertSelect( 'watchlist', 'watchlist',
 378                         array(
 379                                 'wl_user' => 'wl_user',
 380                                 'wl_namespace' => 'wl_namespace | 1',
 381                                 'wl_title' => 'wl_title',
 382                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 383                         ), array( 'NOT (wl_namespace & 1)' ), $fname, 'IGNORE' );
 384                 echo "ok\n";
 385         } else {
 386                 echo "...watchlist talk page rows already present\n";
 387         }
 388 }
 389
 390 function do_copy_newtalk_to_watchlist() {
 391         global $wgDatabase;
 392         global $wgCommandLineMode;      # this needs to be saved while getID() and getName() are called
 393
 394         $res = $wgDatabase->safeQuery( 'SELECT user_id, user_ip FROM !',
 395                 $wgDatabase->tableName( 'user_newtalk' ) );
 396         $num_newtalks=$wgDatabase->numRows($res);
 397         echo "Now converting ".$num_newtalks." user_newtalk entries to watchlist table entries ... \n";
 398
 399         $user = new User();
 400         for ( $i = 1; $i <= $num_newtalks; $i++ ) {
 401                 $wluser = $wgDatabase->fetchObject( $res );
 402                 if ($wluser->user_id == 0) { # anonymous users ... have IP numbers as "names"
 403                         if ($user->isIP($wluser->user_ip)) { # do only if it really looks like an IP number (double checked)
 404                                 $wgDatabase->replace( 'watchlist',
 405                                         array(array('wl_user','wl_namespace', 'wl_title', 'wl_notificationtimestamp' )),
 406                                           array('wl_user'                       => 0,
 407                                                 'wl_namespace'                  => NS_USER_TALK,
 408                                                 'wl_title'                      => $wluser->user_ip,
 409                                                 'wl_notificationtimestamp'      => '19700101000000'
 410                                                 ), 'updaters.inc::do_watchlist_update2'
 411                                         );
 412                         }
 413                 } else { # normal users ... have user_ids
 414                         $user->setID($wluser->user_id);
 415                         $wgDatabase->replace( 'watchlist',
 416                                 array(array('wl_user','wl_namespace', 'wl_title', 'wl_notificationtimestamp' )),
 417                                   array('wl_user'                       => $user->getID(),
 418                                         'wl_namespace'                  => NS_USER_TALK,
 419                                         'wl_title'                      => $user->getName(),
 420                                         'wl_notificationtimestamp'      => '19700101000000'
 421                                         ), 'updaters.inc::do_watchlist_update3'
 422                                 );
 423                 }
 424         }
 425         echo "Done.\n";
 426 }
 427
 428
 429 function do_user_update() {
 430         global $wgDatabase;
 431         if( $wgDatabase->fieldExists( 'user', 'user_emailauthenticationtimestamp' ) ) {
 432                 echo "User table contains old email authentication field. Dropping... ";
 433                 dbsource( archive( 'patch-email-authentication.sql' ), $wgDatabase );
 434                 echo "ok\n";
 435         } else {
 436                 echo "...user table does not contain old email authentication field.\n";
 437         }
 438 }
 439
 440 /**
 441  * 1.4 betas were missing the 'binary' marker from logging.log_title,
 442  * which causes a collation mismatch error on joins in MySQL 4.1.
 443  */
 444 function do_logging_encoding() {
 445         global $wgDatabase, $wgDBtype;
 446         if ($wgDBtype != 'mysql')
 447                 return;
 448         $logging = $wgDatabase->tableName( 'logging' );
 449         $res = $wgDatabase->query( "SELECT log_title FROM $logging LIMIT 0" );
 450         $flags = explode( ' ', mysql_field_flags( $res->result, 0 ) );
 451         $wgDatabase->freeResult( $res );
 452
 453         if( in_array( 'binary', $flags ) ) {
 454                 echo "Logging table has correct title encoding.\n";
 455         } else {
 456                 echo "Fixing title encoding on logging table... ";
 457                 dbsource( archive( 'patch-logging-title.sql' ), $wgDatabase );
 458                 echo "ok\n";
 459         }
 460 }
 461
 462 function do_schema_restructuring() {
 463         global $wgDatabase;
 464         $fname="do_schema_restructuring";
 465         if ( $wgDatabase->tableExists( 'page' ) ) {
 466                 echo "...page table already exists.\n";
 467         } else {
 468                 echo "...converting from cur/old to page/revision/text DB structure.\n"; flush();
 469                 echo wfTimestamp( TS_DB );
 470                 echo "......checking for duplicate entries.\n"; flush();
 471
 472                 list ($cur, $old, $page, $revision, $text) = $wgDatabase->tableNamesN( 'cur', 'old', 'page', 'revision', 'text' );
 473
 474                 $rows = $wgDatabase->query( "SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 475                                 FROM $cur GROUP BY cur_title, cur_namespace HAVING c>1", $fname );
 476
 477                 if ( $wgDatabase->numRows( $rows ) > 0 ) {
 478                         echo wfTimestamp( TS_DB );
 479                         echo "......<b>Found duplicate entries</b>\n";
 480                         echo ( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 481                         while ( $row = $wgDatabase->fetchObject( $rows ) ) {
 482                                 if ( ! isset( $duplicate[$row->cur_namespace] ) ) {
 483                                         $duplicate[$row->cur_namespace] = array();
 484                                 }
 485                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 486                                 echo ( sprintf( "      %-60s %3s %5s\n", $row->cur_title, $row->cur_namespace, $row->c ) );
 487                         }
 488                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 489                         $firstCond = true;
 490                         foreach ( $duplicate as $ns => $titles ) {
 491                                 if ( $firstCond ) {
 492                                         $firstCond = false;
 493                                 } else {
 494                                         $sql .= ' OR ';
 495                                 }
 496                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 497                                 $first = true;
 498                                 foreach ( $titles as $t ) {
 499                                         if ( $first ) {
 500                                                 $sql .= $wgDatabase->addQuotes( $t );
 501                                                 $first = false;
 502                                         } else {
 503                                                 $sql .= ', ' . $wgDatabase->addQuotes( $t );
 504                                         }
 505                                 }
 506                                 $sql .= ") ) \n";
 507                         }
 508                         # By sorting descending, the most recent entry will be the first in the list.
 509                         # All following entries will be deleted by the next while-loop.
 510                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 511
 512                         $rows = $wgDatabase->query( $sql, $fname );
 513
 514                         $prev_title = $prev_namespace = false;
 515                         $deleteId = array();
 516
 517                         while ( $row = $wgDatabase->fetchObject( $rows ) ) {
 518                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 519                                         $deleteId[] = $row->cur_id;
 520                                 }
 521                                 $prev_title     = $row->cur_title;
 522                                 $prev_namespace = $row->cur_namespace;
 523                         }
 524                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . join( ',', $deleteId ) . ')';
 525                         $rows = $wgDatabase->query( $sql, $fname );
 526                         echo wfTimestamp( TS_DB );
 527                         echo "......<b>Deleted</b> ".$wgDatabase->affectedRows()." records.\n";
 528                 }
 529
 530
 531                 echo wfTimestamp( TS_DB );
 532                 echo "......Creating tables.\n";
 533                 $wgDatabase->query("CREATE TABLE $page (
 534                         page_id int(8) unsigned NOT NULL auto_increment,
 535                         page_namespace int NOT NULL,
 536                         page_title varchar(255) binary NOT NULL,
 537                         page_restrictions tinyblob NOT NULL,
 538                         page_counter bigint(20) unsigned NOT NULL default '0',
 539                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 540                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 541                         page_random real unsigned NOT NULL,
 542                         page_touched char(14) binary NOT NULL default '',
 543                         page_latest int(8) unsigned NOT NULL,
 544                         page_len int(8) unsigned NOT NULL,
 545
 546                         PRIMARY KEY page_id (page_id),
 547                         UNIQUE INDEX name_title (page_namespace,page_title),
 548                         INDEX (page_random),
 549                         INDEX (page_len)
 550                         ) TYPE=InnoDB", $fname );
 551                 $wgDatabase->query("CREATE TABLE $revision (
 552                         rev_id int(8) unsigned NOT NULL auto_increment,
 553                         rev_page int(8) unsigned NOT NULL,
 554                         rev_comment tinyblob NOT NULL,
 555                         rev_user int(5) unsigned NOT NULL default '0',
 556                         rev_user_text varchar(255) binary NOT NULL default '',
 557                         rev_timestamp char(14) binary NOT NULL default '',
 558                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 559                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 560                         rev_len int(8) unsigned,
 561                         rev_parent_id int(8) unsigned default NULL,
 562                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 563                         UNIQUE INDEX rev_id (rev_id),
 564                         INDEX rev_timestamp (rev_timestamp),
 565                         INDEX page_timestamp (rev_page,rev_timestamp),
 566                         INDEX user_timestamp (rev_user,rev_timestamp),
 567                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 568                         ) TYPE=InnoDB", $fname );
 569
 570                 echo wfTimestamp( TS_DB );
 571                 echo "......Locking tables.\n";
 572                 $wgDatabase->query( "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE", $fname );
 573
 574                 $maxold = intval( $wgDatabase->selectField( 'old', 'max(old_id)', '', $fname ) );
 575                 echo wfTimestamp( TS_DB );
 576                 echo "......maxold is {$maxold}\n";
 577
 578                 echo wfTimestamp( TS_DB );
 579                 global $wgLegacySchemaConversion;
 580                 if( $wgLegacySchemaConversion ) {
 581                         // Create HistoryBlobCurStub entries.
 582                         // Text will be pulled from the leftover 'cur' table at runtime.
 583                         echo "......Moving metadata from cur; using blob references to text in cur table.\n";
 584                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 585                         $cur_flags = "'object'";
 586                 } else {
 587                         // Copy all cur text in immediately: this may take longer but avoids
 588                         // having to keep an extra table around.
 589                         echo "......Moving text from cur.\n";
 590                         $cur_text = 'cur_text';
 591                         $cur_flags = "''";
 592                 }
 593                 $wgDatabase->query( "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user, old_user_text,
 594                                 old_timestamp, old_minor_edit, old_flags)
 595                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags
 596                         FROM $cur", $fname );
 597
 598                 echo wfTimestamp( TS_DB );
 599                 echo "......Setting up revision table.\n";
 600                 $wgDatabase->query( "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user, rev_user_text, rev_timestamp,
 601                                 rev_minor_edit)
 602                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 603                                 old_timestamp, old_minor_edit
 604                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title", $fname );
 605
 606                 echo wfTimestamp( TS_DB );
 607                 echo "......Setting up page table.\n";
 608                 $wgDatabase->query( "INSERT INTO $page (page_id, page_namespace, page_title, page_restrictions, page_counter,
 609                                 page_is_redirect, page_is_new, page_random, page_touched, page_latest, page_len)
 610                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 611                                 cur_random, cur_touched, rev_id, LENGTH(cur_text)
 612                         FROM $cur,$revision
 613                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}", $fname );
 614
 615                 echo wfTimestamp( TS_DB );
 616                 echo "......Unlocking tables.\n";
 617                 $wgDatabase->query( "UNLOCK TABLES", $fname );
 618
 619                 echo wfTimestamp( TS_DB );
 620                 echo "......Renaming old.\n";
 621                 $wgDatabase->query( "ALTER TABLE $old RENAME TO $text", $fname );
 622
 623                 echo wfTimestamp( TS_DB );
 624                 echo "...done.\n";
 625         }
 626 }
 627
 628 function do_inverse_timestamp() {
 629         global $wgDatabase;
 630         if( $wgDatabase->fieldExists( 'revision', 'inverse_timestamp' ) ) {
 631                 echo "Removing revision.inverse_timestamp and fixing indexes... ";
 632                 dbsource( archive( 'patch-inverse_timestamp.sql' ), $wgDatabase );
 633                 echo "ok\n";
 634         } else {
 635                 echo "revision timestamp indexes already up to 2005-03-13\n";
 636         }
 637 }
 638
 639 function do_text_id() {
 640         global $wgDatabase;
 641         if( $wgDatabase->fieldExists( 'revision', 'rev_text_id' ) ) {
 642                 echo "...rev_text_id already in place.\n";
 643         } else {
 644                 echo "Adding rev_text_id field... ";
 645                 dbsource( archive( 'patch-rev_text_id.sql' ), $wgDatabase );
 646                 echo "ok\n";
 647         }
 648 }
 649
 650 function do_namespace_size() {
 651         $tables = array(
 652                 'page'          => 'page',
 653                 'archive'       => 'ar',
 654                 'recentchanges' => 'rc',
 655                 'watchlist'     => 'wl',
 656                 'querycache'    => 'qc',
 657                 'logging'       => 'log',
 658         );
 659         foreach( $tables as $table => $prefix ) {
 660                 do_namespace_size_on( $table, $prefix );
 661                 flush();
 662         }
 663 }
 664
 665 function do_namespace_size_on( $table, $prefix ) {
 666         global $wgDatabase, $wgDBtype;
 667         if ($wgDBtype != 'mysql')
 668                 return;
 669         $field = $prefix . '_namespace';
 670
 671         $tablename = $wgDatabase->tableName( $table );
 672         $result = $wgDatabase->query( "SHOW COLUMNS FROM $tablename LIKE '$field'" );
 673         $info = $wgDatabase->fetchObject( $result );
 674         $wgDatabase->freeResult( $result );
 675
 676         if( substr( $info->Type, 0, 3 ) == 'int' ) {
 677                 echo "...$field is already a full int ($info->Type).\n";
 678         } else {
 679                 echo "Promoting $field from $info->Type to int... ";
 680
 681                 $sql = "ALTER TABLE $tablename MODIFY $field int NOT NULL";
 682                 $wgDatabase->query( $sql );
 683
 684                 echo "ok\n";
 685         }
 686 }
 687
 688 function do_pagelinks_update() {
 689         global $wgDatabase;
 690         if( $wgDatabase->tableExists( 'pagelinks' ) ) {
 691                 echo "...already have pagelinks table.\n";
 692         } else {
 693                 echo "Converting links and brokenlinks tables to pagelinks... ";
 694                 dbsource( archive( 'patch-pagelinks.sql' ), $wgDatabase );
 695                 echo "ok\n";
 696                 flush();
 697
 698                 global $wgCanonicalNamespaceNames;
 699                 foreach( $wgCanonicalNamespaceNames as $ns => $name ) {
 700                         if( $ns != 0 ) {
 701                                 do_pagelinks_namespace( $ns );
 702                         }
 703                 }
 704         }
 705 }
 706
 707 function do_pagelinks_namespace( $namespace ) {
 708         global $wgDatabase, $wgContLang;
 709
 710         $ns = intval( $namespace );
 711         echo "Cleaning up broken links for namespace $ns... ";
 712
 713         $pagelinks = $wgDatabase->tableName( 'pagelinks' );
 714         $name = $wgContLang->getNsText( $ns );
 715         $prefix = $wgDatabase->strencode( $name );
 716         $likeprefix = str_replace( '_', '\\_', $prefix);
 717
 718         $sql = "UPDATE $pagelinks
 719                    SET pl_namespace=$ns,
 720                        pl_title=TRIM(LEADING '$prefix:' FROM pl_title)
 721                  WHERE pl_namespace=0
 722                    AND pl_title LIKE '$likeprefix:%'";
 723
 724         $wgDatabase->query( $sql, 'do_pagelinks_namespace' );
 725         echo "ok\n";
 726 }
 727
 728 function do_drop_img_type() {
 729         global $wgDatabase;
 730
 731         if( $wgDatabase->fieldExists( 'image', 'img_type' ) ) {
 732                 echo "Dropping unused img_type field in image table... ";
 733                 dbsource( archive( 'patch-drop_img_type.sql' ), $wgDatabase );
 734                 echo "ok\n";
 735         } else {
 736                 echo "No img_type field in image table; Good.\n";
 737         }
 738 }
 739
 740 function do_old_links_update() {
 741         global $wgDatabase;
 742         if( $wgDatabase->tableExists( 'pagelinks' ) ) {
 743                 echo "Already have pagelinks; skipping old links table updates.\n";
 744         } else {
 745                 convertLinks(); flush();
 746         }
 747 }
 748
 749 function do_user_unique_update() {
 750         global $wgDatabase;
 751         $duper = new UserDupes( $wgDatabase );
 752         if( $duper->hasUniqueIndex() ) {
 753                 echo "Already have unique user_name index.\n";
 754         } else {
 755                 if( !$duper->clearDupes() ) {
 756                         echo "WARNING: This next step will probably fail due to unfixed duplicates...\n";
 757                 }
 758                 echo "Adding unique index on user_name... ";
 759                 dbsource( archive( 'patch-user_nameindex.sql' ), $wgDatabase );
 760                 echo "ok\n";
 761         }
 762 }
 763
 764 function do_user_groups_update() {
 765         $fname = 'do_user_groups_update';
 766         global $wgDatabase;
 767
 768         if( $wgDatabase->tableExists( 'user_groups' ) ) {
 769                 echo "...user_groups table already exists.\n";
 770                 return do_user_groups_reformat();
 771         }
 772
 773         echo "Adding user_groups table... ";
 774         dbsource( archive( 'patch-user_groups.sql' ), $wgDatabase );
 775         echo "ok\n";
 776
 777         if( !$wgDatabase->tableExists( 'user_rights' ) ) {
 778                 if( $wgDatabase->fieldExists( 'user', 'user_rights' ) ) {
 779                         echo "Upgrading from a 1.3 or older database? Breaking out user_rights for conversion...";
 780                         dbsource( archive( 'patch-user_rights.sql' ), $wgDatabase );
 781                         echo "ok\n";
 782                 } else {
 783                         echo "*** WARNING: couldn't locate user_rights table or field for upgrade.\n";
 784                         echo "*** You may need to manually configure some sysops by manipulating\n";
 785                         echo "*** the user_groups table.\n";
 786                         return;
 787                 }
 788         }
 789
 790         echo "Converting user_rights table to user_groups... ";
 791         $result = $wgDatabase->select( 'user_rights',
 792                 array( 'ur_user', 'ur_rights' ),
 793                 array( "ur_rights != ''" ),
 794                 $fname );
 795
 796         while( $row = $wgDatabase->fetchObject( $result ) ) {
 797                 $groups = array_unique(
 798                         array_map( 'trim',
 799                                 explode( ',', $row->ur_rights ) ) );
 800
 801                 foreach( $groups as $group ) {
 802                         $wgDatabase->insert( 'user_groups',
 803                                 array(
 804                                         'ug_user'  => $row->ur_user,
 805                                         'ug_group' => $group ),
 806                                 $fname );
 807                 }
 808         }
 809         $wgDatabase->freeResult( $result );
 810         echo "ok\n";
 811 }
 812
 813 function do_user_groups_reformat() {
 814         # Check for bogus formats from previous 1.5 alpha code.
 815         global $wgDatabase;
 816         $info = $wgDatabase->fieldInfo( 'user_groups', 'ug_group' );
 817
 818         if( $info->type() == 'int' ) {
 819                 $oldug = $wgDatabase->tableName( 'user_groups' );
 820                 $newug = $wgDatabase->tableName( 'user_groups_bogus' );
 821                 echo "user_groups is in bogus intermediate format. Renaming to $newug... ";
 822                 $wgDatabase->query( "ALTER TABLE $oldug RENAME TO $newug" );
 823                 echo "ok\n";
 824
 825                 echo "Re-adding fresh user_groups table... ";
 826                 dbsource( archive( 'patch-user_groups.sql' ), $wgDatabase );
 827                 echo "ok\n";
 828
 829                 echo "***\n";
 830                 echo "*** WARNING: You will need to manually fix up user permissions in the user_groups\n";
 831                 echo "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n";
 832                 echo "***\n";
 833         } else {
 834                 echo "...user_groups is in current format.\n";
 835         }
 836
 837 }
 838
 839 function do_watchlist_null() {
 840         # Make sure wl_notificationtimestamp can be NULL,
 841         # and update old broken items.
 842         global $wgDatabase;
 843         $info = $wgDatabase->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 844
 845         if( !$info->nullable() ) {
 846                 echo "Making wl_notificationtimestamp nullable... ";
 847                 dbsource( archive( 'patch-watchlist-null.sql' ), $wgDatabase );
 848                 echo "ok\n";
 849         } else {
 850                 echo "...wl_notificationtimestamp is already nullable.\n";
 851         }
 852
 853 }
 854
 855 /**
 856  * @bug 3946
 857  */
 858 function do_page_random_update() {
 859         global $wgDatabase;
 860
 861         echo "Setting page_random to a random value on rows where it equals 0...";
 862
 863         $page = $wgDatabase->tableName( 'page' );
 864         $wgDatabase->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", 'do_page_random_update' );
 865         $rows = $wgDatabase->affectedRows();
 866
 867         echo "changed $rows rows\n";
 868 }
 869
 870 function do_templatelinks_update() {
 871         global $wgDatabase, $wgLoadBalancer;
 872         $fname = 'do_templatelinks_update';
 873
 874         if ( $wgDatabase->tableExists( 'templatelinks' ) ) {
 875                 echo "...templatelinks table already exists\n";
 876                 return;
 877         }
 878         echo "Creating templatelinks table...\n";
 879         dbsource( archive('patch-templatelinks.sql'), $wgDatabase );
 880         echo "Populating...\n";
 881         if ( isset( $wgLoadBalancer ) && $wgLoadBalancer->getServerCount() > 1 ) {
 882                 // Slow, replication-friendly update
 883                 $res = $wgDatabase->select( 'pagelinks', array( 'pl_from', 'pl_namespace', 'pl_title' ),
 884                         array( 'pl_namespace' => NS_TEMPLATE ), $fname );
 885                 $count = 0;
 886                 while ( $row = $wgDatabase->fetchObject( $res ) ) {
 887                         $count = ($count + 1) % 100;
 888                         if ( $count == 0 ) {
 889                                 if ( function_exists( 'wfWaitForSlaves' ) ) {
 890                                         wfWaitForSlaves( 10 );
 891                                 } else {
 892                                         sleep( 1 );
 893                                 }
 894                         }
 895                         $wgDatabase->insert( 'templatelinks',
 896                                 array(
 897                                         'tl_from' => $row->pl_from,
 898                                         'tl_namespace' => $row->pl_namespace,
 899                                         'tl_title' => $row->pl_title,
 900                                 ), $fname
 901                         );
 902
 903                 }
 904                 $wgDatabase->freeResult( $res );
 905         } else {
 906                 // Fast update
 907                 $wgDatabase->insertSelect( 'templatelinks', 'pagelinks',
 908                         array(
 909                                 'tl_from' => 'pl_from',
 910                                 'tl_namespace' => 'pl_namespace',
 911                                 'tl_title' => 'pl_title'
 912                         ), array(
 913                                 'pl_namespace' => 10
 914                         ), $fname
 915                 );
 916         }
 917         echo "Done. Please run maintenance/refreshLinks.php for a more thorough templatelinks update.\n";
 918 }
 919
 920 // Add index on ( rc_namespace, rc_user_text ) [Jul. 2006]
 921 // Add index on ( rc_user_text, rc_timestamp ) [Nov. 2006]
 922 function do_rc_indices_update() {
 923         global $wgDatabase;
 924         echo( "Checking for additional recent changes indices...\n" );
 925
 926         $indexes = array(
 927                 'rc_ns_usertext' => 'patch-recentchanges-utindex.sql',
 928                 'rc_user_text' => 'patch-rc_user_text-index.sql',
 929         );
 930
 931         foreach( $indexes as $index => $patch ) {
 932                 $info = $wgDatabase->indexInfo( 'recentchanges', $index, __METHOD__ );
 933                 if( !$info ) {
 934                         echo( "...index `{$index}` not found; adding..." );
 935                         dbsource( archive( $patch ) );
 936                         echo( "done.\n" );
 937                 } else {
 938                         echo( "...index `{$index}` seems ok.\n" );
 939                 }
 940         }
 941 }
 942
 943 function index_has_field($table, $index, $field) {
 944         global $wgDatabase;
 945         echo( "Checking if $table index $index includes field $field...\n" );
 946         $info = $wgDatabase->indexInfo( $table, $index, __METHOD__ );
 947         if( $info ) {
 948                 foreach($info as $row) {
 949                         if($row->Column_name == $field) {
 950                                 echo( "...index $index on table $table seems to be ok\n" );
 951                                 return true;
 952                         }
 953                 }
 954         }
 955         echo( "...index $index on table $table has no field $field; adding\n" );
 956         return false;
 957 }
 958
 959 function do_backlinking_indices_update() {
 960         echo( "Checking for backlinking indices...\n" );
 961         if (!index_has_field('pagelinks', 'pl_namespace', 'pl_from') ||
 962                 !index_has_field('templatelinks', 'tl_namespace', 'tl_from') ||
 963                 !index_has_field('imagelinks', 'il_to', 'il_from'))
 964         {
 965                 dbsource( archive( 'patch-backlinkindexes.sql' ) );
 966         }
 967 }
 968
 969 function do_categorylinks_indices_update() {
 970         echo( "Checking for categorylinks indices...\n" );
 971         if (!index_has_field('categorylinks', 'cl_sortkey', 'cl_from'))
 972         {
 973                 dbsource( archive( 'patch-categorylinksindex.sql' ) );
 974         }
 975 }
 976
 977 function do_stats_init() {
 978         // Sometimes site_stats table is not properly populated.
 979         global $wgDatabase;
 980         echo "Checking site_stats row...";
 981         $row = $wgDatabase->selectRow( 'site_stats', '*', array( 'ss_row_id' => 1 ), __METHOD__ );
 982         if( $row === false ) {
 983                 echo "data is missing! rebuilding...\n";
 984
 985                 global $IP;
 986                 require_once "$IP/maintenance/initStats.inc";
 987                 wfInitStats();
 988         } else {
 989                 echo "ok.\n";
 990         }
 991 }
 992
 993 function purge_cache() {
 994         global $wgDatabase;
 995         # We can't guarantee that the user will be able to use TRUNCATE,
 996         # but we know that DELETE is available to us
 997         echo( "Purging caches..." );
 998         $wgDatabase->delete( 'objectcache', '*', __METHOD__ );
 999         echo( "done.\n" );
1000 }
1001
1002 function do_all_updates( $shared = false, $purge = true ) {
1003         global $wgNewTables, $wgNewFields, $wgRenamedTables, $wgSharedDB, $wgDatabase, $wgDBtype, $IP;
1004
1005         wfRunHooks('LoadExtensionSchemaUpdates');
1006
1007         $doUser = !$wgSharedDB || $shared;
1008
1009         if ($wgDBtype === 'postgres') {
1010                 do_postgres_updates();
1011                 return;
1012         }
1013
1014         # Run core updates in sequence...
1015         global $wgMysqlUpdates;
1016         foreach( $wgMysqlUpdates as $params ) {
1017                 $func = array_shift( $params );
1018                 call_user_func_array( $func, $params );
1019                 flush();
1020         }
1021
1022         /// @fixme clean up this mess too!
1023         global $wgExtNewTables, $wgExtNewFields, $wgExtNewIndexes;
1024         # Add missing extension tables
1025         foreach ( $wgExtNewTables as $tableRecord ) {
1026                 add_table( $tableRecord[0], $tableRecord[1], true );
1027                 flush();
1028         }
1029         # Add missing extension fields
1030         foreach ( $wgExtNewFields as $fieldRecord ) {
1031                 if ( $fieldRecord[0] != 'user' || $doUser ) {
1032                         add_field( $fieldRecord[0], $fieldRecord[1], $fieldRecord[2], true );
1033                 }
1034                 flush();
1035         }
1036         # Add missing extension indexes
1037         foreach ( $wgExtNewIndexes as $fieldRecord ) {
1038                 add_index( $fieldRecord[0], $fieldRecord[1], $fieldRecord[2], true );
1039                 flush();
1040         }
1041
1042
1043         echo "Deleting old default messages (this may take a long time!)..."; flush();
1044         deleteDefaultMessages();
1045         echo "Done\n"; flush();
1046
1047         do_stats_init(); flush();
1048
1049         if( $purge ) {
1050                 purge_cache();
1051                 flush();
1052         }
1053 }
1054
1055 function archive($name) {
1056         global $wgDBtype, $IP;
1057         switch ($wgDBtype) {
1058         case "postgres":
1059                 return "$IP/maintenance/postgres/archives/$name";
1060         default:
1061                 return "$IP/maintenance/archives/$name";
1062         }
1063 }
1064
1065 function do_restrictions_update() {
1066         # Adding page_restrictions table, obsoleting page.page_restrictions.
1067         #  Migrating old restrictions to new table
1068         # -- Andrew Garrett, January 2007.
1069
1070         global $wgDatabase;
1071
1072         $name = 'page_restrictions';
1073         $patch = 'patch-page_restrictions.sql';
1074         $patch2 = 'patch-page_restrictions_sortkey.sql';
1075
1076         if ( $wgDatabase->tableExists( $name ) ) {
1077                 echo "...$name table already exists.\n";
1078         } else {
1079                 echo "Creating $name table...";
1080                 dbsource( archive($patch), $wgDatabase );
1081                 dbsource( archive($patch2), $wgDatabase );
1082                 echo "ok\n";
1083
1084                 echo "Migrating old restrictions to new table...";
1085
1086                 $res = $wgDatabase->select( 'page', array( 'page_id', 'page_restrictions' ), array("page_restrictions!=''", "page_restrictions!='edit=:move='"), __METHOD__ );
1087
1088                 $count = 0;
1089
1090                 while ($row = $wgDatabase->fetchObject($res) ) {
1091                         $count = ($count + 1) % 100;
1092
1093                         if ($count == 0) {
1094                                 if ( function_exists( 'wfWaitForSlaves' ) ) {
1095                                         wfWaitForSlaves( 10 );
1096                                 } else {
1097                                         sleep( 1 );
1098                                 }
1099                         }
1100
1101                         # Figure out what the restrictions are..
1102                         $id = $row->page_id;
1103                         $flatrestrictions = explode( ':', $row->page_restrictions );
1104
1105                         $restrictions = array ();
1106                         foreach( $flatrestrictions as $restriction ) {
1107                                 $thisrestriction = explode( '=', $restriction, 2 );
1108                                 if( count( $thisrestriction ) == 1 ) {
1109                                         // Compatibility with old protections from before
1110                                         // separate move protection was added.
1111                                         list( $level ) = $thisrestriction;
1112                                         if( $level ) {
1113                                                 $restrictions['edit'] = $level;
1114                                                 $restrictions['move'] = $level;
1115                                         }
1116                                 } else {
1117                                         list( $type, $level ) = $thisrestriction;
1118                                         if( $level ) {
1119                                                 $restrictions[$type] = $level;
1120                                         }
1121                                 }
1122
1123                         $wgDatabase->update( 'page', array ( 'page_restrictions' => ''), array( 'page_id' => $id ), __METHOD__ );
1124
1125                         }
1126
1127                         foreach( $restrictions as $type => $level ) {
1128                                 $wgDatabase->insert( 'page_restrictions', array ( 'pr_page' => $id,
1129                                                                                         'pr_type' => $type,
1130                                                                                         'pr_level' => $level,
1131                                                                                         'pr_cascade' => 0,
1132                                                                                         'pr_expiry' => 'infinity' ),
1133                                                                                         __METHOD__ );
1134                         }
1135                 }
1136                 print "ok\n";
1137         }
1138 }
1139
1140 function do_category_population() {
1141         if( update_row_exists( 'populate category' ) ) {
1142                 echo "...category table already populated.\n";
1143                 return;
1144         }
1145         require_once( 'populateCategory.inc' );
1146         echo "Populating category table, printing progress markers.  ".
1147 "For large databases, you\n".
1148 "may want to hit Ctrl-C and do this manually with maintenance/\n".
1149 "populateCategory.php.\n";
1150         populateCategory( '', 10, 0, true );
1151         echo "Done populating category table.\n";
1152 }
1153
1154 function
1155 pg_describe_table($table)
1156 {
1157 global  $wgDatabase, $wgDBmwschema;
1158         $q = <<<END
1159 SELECT attname, attnum FROM pg_namespace, pg_class, pg_attribute
1160         WHERE pg_class.relnamespace = pg_namespace.oid
1161           AND attrelid=pg_class.oid AND attnum > 0
1162           AND relname=%s AND nspname=%s
1163 END;
1164         $res = $wgDatabase->query(sprintf($q,
1165                         $wgDatabase->addQuotes($table),
1166                         $wgDatabase->addQuotes($wgDBmwschema)));
1167         if (!$res)
1168                 return null;
1169
1170         $cols = array();
1171         while ($r = $wgDatabase->fetchRow($res)) {
1172                 $cols[] = array(
1173                                 "name" => $r[0],
1174                                 "ord" => $r[1],
1175                         );
1176         }
1177         return $cols;
1178 }
1179
1180 function
1181 pg_describe_index($idx)
1182 {
1183 global  $wgDatabase, $wgDBmwschema;
1184
1185         // first fetch the key (which is a list of columns ords) and
1186         // the table the index applies to (an oid)
1187         $q = <<<END
1188 SELECT indkey, indrelid FROM pg_namespace, pg_class, pg_index
1189         WHERE nspname=%s
1190           AND pg_class.relnamespace = pg_namespace.oid
1191           AND relname=%s
1192           AND indexrelid=pg_class.oid
1193 END;
1194         $res = $wgDatabase->query(sprintf($q,
1195                         $wgDatabase->addQuotes($wgDBmwschema),
1196                         $wgDatabase->addQuotes($idx)));
1197         if (!$res)
1198                 return null;
1199         if (!($r = $wgDatabase->fetchRow($res))) {
1200                 $wgDatabase->freeResult($res);
1201                 return null;
1202         }
1203
1204         $indkey = $r[0];
1205         $relid = intval($r[1]);
1206         $indkeys = explode(" ", $indkey);
1207         $wgDatabase->freeResult($res);
1208
1209         $colnames = array();
1210         foreach ($indkeys as $rid) {
1211                 $query = <<<END
1212 SELECT attname FROM pg_class, pg_attribute
1213         WHERE attrelid=$relid
1214           AND attnum=%d
1215           AND attrelid=pg_class.oid
1216 END;
1217                 $r2 = $wgDatabase->query(sprintf($query, $rid));
1218                 if (!$r2)
1219                         return null;
1220                 if (!($row2 = $wgDatabase->fetchRow($r2))) {
1221                         $wgDatabase->freeResult($r2);
1222                         return null;
1223                 }
1224                 $colnames[] = $row2[0];
1225                 $wgDatabase->freeResult($r2);
1226         }
1227
1228         return $colnames;
1229 }
1230
1231 function
1232 pg_index_exists($table, $index)
1233 {
1234 global  $wgDatabase, $wgDBmwschema;
1235         $exists = $wgDatabase->selectField("pg_indexes", "indexname",
1236                         array(  "indexname" => $index,
1237                                 "tablename" => $table,
1238                                 "schemaname" => $wgDBmwschema));
1239         return $exists === $index;
1240 }
1241
1242 function
1243 pg_fkey_deltype($fkey)
1244 {
1245 global  $wgDatabase, $wgDBmwschema;
1246         $q = <<<END
1247 SELECT confdeltype FROM pg_constraint, pg_namespace
1248         WHERE connamespace=pg_namespace.oid
1249           AND nspname=%s
1250           AND conname=%s;
1251 END;
1252         $r = $wgDatabase->query(sprintf($q,
1253                 $wgDatabase->addQuotes($wgDBmwschema),
1254                 $wgDatabase->addQuotes($fkey)));
1255         if (!($row = $wgDatabase->fetchRow($r)))
1256                 return null;
1257         return $row[0];
1258 }
1259
1260 function
1261 pg_rule_def($table, $rule)
1262 {
1263 global  $wgDatabase, $wgDBmwschema;
1264         $q = <<<END
1265 SELECT definition FROM pg_rules
1266         WHERE schemaname = %s
1267           AND tablename = %s
1268           AND rulename = %s
1269 END;
1270         $r = $wgDatabase->query(sprintf($q,
1271                         $wgDatabase->addQuotes($wgDBmwschema),
1272                         $wgDatabase->addQuotes($table),
1273                         $wgDatabase->addQuotes($rule)));
1274         $row = $wgDatabase->fetchRow($r);
1275         if (!$row)
1276                 return null;
1277         $d = $row[0];
1278         $wgDatabase->freeResult($r);
1279         return $d;
1280 }
1281
1282 function do_postgres_updates() {
1283         global $wgDatabase, $wgVersion, $wgDBmwschema, $wgDBts2schema, $wgShowExceptionDetails, $wgDBuser;
1284
1285         ## Gather version numbers in case we need them
1286         $version = $wgDatabase->getServerVersion(); ## long string
1287         $numver = $wgDatabase->numeric_version; ## X.Y e.g. 8.3
1288
1289         $wgShowExceptionDetails = 1;
1290
1291         # Just in case their LocalSettings.php does not have this:
1292         if ( !isset( $wgDBmwschema ))
1293                 $wgDBmwschema = 'mediawiki';
1294
1295         # Verify that this user is configured correctly
1296         $safeuser = $wgDatabase->addQuotes($wgDBuser);
1297         $SQL = "SELECT array_to_string(useconfig,'*') FROM pg_catalog.pg_user WHERE usename = $safeuser";
1298         $config = pg_fetch_result( $wgDatabase->doQuery( $SQL ), 0, 0 );
1299         $conf = array();
1300         foreach( explode( '*', $config ) as $c ) {
1301                 list( $x,$y ) = explode( '=', $c );
1302                 $conf[$x] = $y;
1303         }
1304         if( !array_key_exists( 'search_path', $conf ) ) {
1305                 $search_path = '';
1306         }
1307         else {
1308                 $search_path = $conf['search_path'];
1309         }
1310         if( strpos( $search_path, $wgDBmwschema ) === false ) {
1311                 echo "Adding in schema \"$wgDBmwschema\" to search_path for user \"$wgDBuser\"\n";
1312                 $search_path = "$wgDBmwschema, $search_path";
1313         }
1314         if( strpos( $search_path, $wgDBts2schema ) === false ) {
1315                 echo "Adding in schema \"$wgDBts2schema\" to search_path for user \"$wgDBuser\"\n";
1316                 $search_path = "$search_path, $wgDBts2schema";
1317         }
1318         if( array_key_exists( 'search_path', $conf ) === false || $search_path != $conf['search_path'] ) {
1319                 $wgDatabase->doQuery( "ALTER USER $wgDBuser SET search_path = $search_path" );
1320                 $wgDatabase->doQuery( "SET search_path = $search_path" );
1321         }
1322         else {
1323                 $path = $conf['search_path'];
1324                 echo "... search_path for user \"$wgDBuser\" looks correct ($path)\n";
1325         }
1326         $goodconf = array(
1327                 'client_min_messages' => 'error',
1328                 'DateStyle'           => 'ISO, YMD',
1329                 'TimeZone'            => 'GMT'
1330         );
1331         foreach( array_keys( $goodconf ) AS $key ) {
1332                 $value = $goodconf[$key];
1333                 if( !array_key_exists( $key, $conf ) or $conf[$key] !== $value ) {
1334                         echo "Setting $key to '$value' for user \"$wgDBuser\"\n";
1335                         $wgDatabase->doQuery( "ALTER USER $wgDBuser SET $key = '$value'" );
1336                         $wgDatabase->doQuery( "SET $key = '$value'" );
1337                 }
1338                 else {
1339                         echo "... default value of \"$key\" is correctly set to \"$value\" for user \"$wgDBuser\"\n";
1340                 }
1341         }
1342
1343         $newsequences = array(
1344                 "log_log_id_seq",
1345                 "pr_id_val",
1346         );
1347
1348         $newtables = array(
1349                 array("category",          "patch-category.sql"),
1350                 array("mediawiki_version", "patch-mediawiki_version.sql"),
1351                 array("mwuser",            "patch-mwuser.sql"),
1352                 array("pagecontent",       "patch-pagecontent.sql"),
1353                 array("querycachetwo",     "patch-querycachetwo.sql"),
1354                 array("page_props",        "patch-page_props.sql"),
1355                 array("page_restrictions", "patch-page_restrictions.sql"),
1356                 array("profiling",         "patch-profiling.sql"),
1357                 array("protected_titles",  "patch-protected_titles.sql"),
1358                 array("redirect",          "patch-redirect.sql"),
1359                 array("updatelog",         "patch-updatelog.sql"),
1360         );
1361
1362         $newcols = array(
1363                 array("archive",       "ar_deleted",           "SMALLINT NOT NULL DEFAULT 0"),
1364                 array("archive",       "ar_len",               "INTEGER"),
1365                 array("archive",       "ar_page_id",           "INTEGER"),
1366                 array("image",         "img_sha1",             "TEXT NOT NULL DEFAULT ''"),
1367                 array("ipblocks",      "ipb_anon_only",        "CHAR NOT NULL DEFAULT '0'"),
1368                 array("ipblocks",      "ipb_by_text",          "TEXT NOT NULL DEFAULT ''"),
1369                 array("ipblocks",      "ipb_block_email",      "CHAR NOT NULL DEFAULT '0'"),
1370                 array("ipblocks",      "ipb_create_account",   "CHAR NOT NULL DEFAULT '1'"),
1371                 array("ipblocks",      "ipb_deleted",          "SMALLINT NOT NULL DEFAULT 0"),
1372                 array("ipblocks",      "ipb_enable_autoblock", "CHAR NOT NULL DEFAULT '1'"),
1373                 array("filearchive",   "fa_deleted",           "SMALLINT NOT NULL DEFAULT 0"),
1374                 array("logging",       "log_deleted",          "SMALLINT NOT NULL DEFAULT 0"),
1375                 array("logging",       "log_id",               "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('log_log_id_seq')"),
1376                 array("logging",       "log_params",           "TEXT"),
1377                 array("mwuser",        "user_editcount",       "INTEGER"),
1378                 array("mwuser",        "user_newpass_time",    "TIMESTAMPTZ"),
1379                 array("oldimage",      "oi_deleted",           "SMALLINT NOT NULL DEFAULT 0"),
1380                 array("oldimage",      "oi_metadata",          "BYTEA NOT NULL DEFAULT ''"),
1381                 array("oldimage",      "oi_media_type",        "TEXT"),
1382                 array("oldimage",      "oi_major_mime",        "TEXT NOT NULL DEFAULT 'unknown'"),
1383                 array("oldimage",      "oi_minor_mime",        "TEXT NOT NULL DEFAULT 'unknown'"),
1384                 array("oldimage",      "oi_sha1",              "TEXT NOT NULL DEFAULT ''"),
1385                 array("page_restrictions", "pr_id",            "INTEGER NOT NULL UNIQUE DEFAULT nextval('pr_id_val')"),
1386                 array("recentchanges", "rc_deleted",           "SMALLINT NOT NULL DEFAULT 0"),
1387                 array("recentchanges", "rc_log_action",        "TEXT"),
1388         array("recentchanges", "rc_log_type",          "TEXT"),
1389         array("recentchanges", "rc_logid",             "INTEGER NOT NULL DEFAULT 0"),
1390                 array("recentchanges", "rc_new_len",           "INTEGER"),
1391                 array("recentchanges", "rc_old_len",           "INTEGER"),
1392                 array("recentchanges", "rc_params",            "TEXT"),
1393                 array("revision",      "rev_len",              "INTEGER"),
1394                 array("revision",      "rev_deleted",          "SMALLINT NOT NULL DEFAULT 0"),
1395         );
1396
1397
1398         # table, column, desired type, USING clause if needed (with new default if needed)
1399         $typechanges = array(
1400                 array("archive",      "ar_deleted",      "smallint", ""),
1401                 array("archive",      "ar_minor_edit",   "smallint", "ar_minor_edit::smallint DEFAULT 0"),
1402                 array("filearchive",  "fa_deleted",      "smallint", ""),
1403                 array("filearchive",  "fa_height",       "integer",  ""),
1404                 array("filearchive",  "fa_metadata",     "bytea",    "decode(fa_metadata,'escape')"),
1405                 array("filearchive",  "fa_size",         "integer",  ""),
1406                 array("filearchive",  "fa_width",        "integer",  ""),
1407                 array("filearchive",  "fa_storage_group","text",     ""),
1408                 array("filearchive",  "fa_storage_key",  "text",     ""),
1409                 array("image",        "img_metadata",    "bytea",    "decode(img_metadata,'escape')"),
1410                 array("image",        "img_size",        "integer",  ""),
1411                 array("image",        "img_width",       "integer",  ""),
1412                 array("image",        "img_height",      "integer",  ""),
1413                 array("interwiki",    "iw_local",        "smallint", "iw_local::smallint DEFAULT 0"),
1414                 array("interwiki",    "iw_trans",        "smallint", "iw_trans::smallint DEFAULT 0"),
1415                 array("ipblocks",     "ipb_auto",        "smallint", "ipb_auto::smallint DEFAULT 0"),
1416                 array("ipblocks",     "ipb_anon_only",   "smallint", "ipb_anon_only::smallint DEFAULT 0"),
1417                 array("ipblocks",     "ipb_create_account", "smallint", "ipb_create_account::smallint DEFAULT 1"),
1418                 array("ipblocks",     "ipb_enable_autoblock", "smallint", "ipb_enable_autoblock::smallint DEFAULT 1"),
1419                 array("ipblocks",     "ipb_block_email", "smallint", "ipb_block_email::smallint DEFAULT 0"),
1420                 array("ipblocks",     "ipb_address",     "text",     "ipb_address::text"),
1421                 array("ipblocks",     "ipb_deleted",     "smallint", "ipb_deleted::smallint"),
1422                 array("math",         "math_inputhash",  "bytea",    "decode(math_inputhash,'escape')"),
1423                 array("math",         "math_outputhash", "bytea",    "decode(math_outputhash,'escape')"),
1424                 array("mwuser",       "user_token",      "text",     ""),
1425                 array("mwuser",       "user_email_token","text",     ""),
1426                 array("objectcache",  "keyname",         "text",     ""),
1427                 array("oldimage",     "oi_height",       "integer",  ""),
1428                 array("oldimage",     "oi_size",         "integer",  ""),
1429                 array("oldimage",     "oi_width",        "integer",  ""),
1430                 array("page",         "page_is_redirect","smallint", "page_is_redirect::smallint DEFAULT 0"),
1431                 array("page",         "page_is_new",     "smallint", "page_is_new::smallint DEFAULT 0"),
1432                 array("querycache",   "qc_value",        "integer",  ""),
1433                 array("querycachetwo","qcc_value",       "integer",  ""),
1434                 array("recentchanges","rc_bot",          "smallint", "rc_bot::smallint DEFAULT 0"),
1435                 array("recentchanges","rc_deleted",      "smallint", ""),
1436                 array("recentchanges","rc_minor",        "smallint", "rc_minor::smallint DEFAULT 0"),
1437                 array("recentchanges","rc_new",          "smallint", "rc_new::smallint DEFAULT 0"),
1438                 array("recentchanges","rc_type",         "smallint", "rc_type::smallint DEFAULT 0"),
1439                 array("recentchanges","rc_patrolled",    "smallint", "rc_patrolled::smallint DEFAULT 0"),
1440                 array("revision",     "rev_minor_edit",  "smallint", "rev_minor_edit::smallint DEFAULT 0"),
1441                 array("templatelinks","tl_namespace",    "smallint", "tl_namespace::smallint"),
1442                 array("user_newtalk", "user_ip",         "text",     "host(user_ip)"),
1443         );
1444
1445         $newindexes = array(
1446                 array("archive",       "archive_user_text", "(ar_user_text)"),
1447                 array("image",         "img_sha1",          "(img_sha1)"),
1448                 array("oldimage",      "oi_sha1",           "(oi_sha1)"),
1449                 array("revision",      "rev_text_id_idx",   "(rev_text_id)"),
1450         );
1451
1452         $newrules = array(
1453         );
1454
1455         foreach ($newsequences as $ns) {
1456                 if ($wgDatabase->sequenceExists($ns)) {
1457                         echo "... sequence \"$ns\" already exists\n";
1458                         continue;
1459                 }
1460
1461                 echo "Creating sequence \"$ns\"\n";
1462                 $wgDatabase->query("CREATE SEQUENCE $ns");
1463         }
1464
1465         foreach ($newtables as $nt) {
1466                 if ($wgDatabase->tableExists($nt[0])) {
1467                         echo "... table \"$nt[0]\" already exists\n";
1468                         continue;
1469                 }
1470
1471                 echo "Creating table \"$nt[0]\"\n";
1472                 dbsource(archive($nt[1]));
1473         }
1474
1475         ## Needed before newcols
1476         if ($wgDatabase->tableExists("archive2")) {
1477                 echo "Converting \"archive2\" back to normal archive table\n";
1478                 if ($wgDatabase->ruleExists("archive", "archive_insert")) {
1479                         echo "Dropping rule \"archive_insert\"\n";
1480                         $wgDatabase->query("DROP RULE archive_insert ON archive");
1481                 }
1482                 if ($wgDatabase->ruleExists("archive", "archive_delete")) {
1483                         echo "Dropping rule \"archive_delete\"\n";
1484                         $wgDatabase->query("DROP RULE archive_delete ON archive");
1485                 }
1486                 dbsource(archive("patch-remove-archive2.sql"));
1487         }
1488         else
1489                 echo "... obsolete table \"archive2\" does not exist\n";
1490
1491         foreach ($newcols as $nc) {
1492                 $fi = $wgDatabase->fieldInfo($nc[0], $nc[1]);
1493                 if (!is_null($fi)) {
1494                         echo "... column \"$nc[0].$nc[1]\" already exists\n";
1495                         continue;
1496                 }
1497
1498                 echo "Adding column \"$nc[0].$nc[1]\"\n";
1499                 $wgDatabase->query("ALTER TABLE $nc[0] ADD $nc[1] $nc[2]");
1500         }
1501
1502         foreach ($typechanges as $tc) {
1503                 $fi = $wgDatabase->fieldInfo($tc[0], $tc[1]);
1504                 if (is_null($fi)) {
1505                         echo "... error: expected column $tc[0].$tc[1] to exist\n";
1506                         exit(1);
1507                 }
1508
1509                 if ($fi->type() === $tc[2])
1510                         echo "... column \"$tc[0].$tc[1]\" is already of type \"$tc[2]\"\n";
1511                 else {
1512                         echo "Changing column type of \"$tc[0].$tc[1]\" from \"{$fi->type()}\" to \"$tc[2]\"\n";
1513                         $sql = "ALTER TABLE $tc[0] ALTER $tc[1] TYPE $tc[2]";
1514                         if (strlen($tc[3])) {
1515                                 $default = array();
1516                                 if (preg_match( '/DEFAULT (.+)/', $tc[3], $default)) {
1517                                         $sqldef = "ALTER TABLE $tc[0] ALTER $tc[1] SET DEFAULT $default[1]";
1518                                         $wgDatabase->query($sqldef);
1519                                         $tc[3] = preg_replace( '/\s*DEFAULT .+/', '', $tc[3]);
1520                                 }
1521                                 $sql .= " USING $tc[3]";
1522                         }
1523                         $sql .= ";\nCOMMIT;\n";
1524                         $wgDatabase->query($sql);
1525                 }
1526         }
1527
1528         if ($wgDatabase->fieldInfo('oldimage','oi_deleted')->type() !== 'smallint') {
1529                 echo "Changing \"oldimage.oi_deleted\" to type \"smallint\"\n";
1530                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted DROP DEFAULT" );
1531                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted TYPE SMALLINT USING (oi_deleted::smallint)" );
1532                 $wgDatabase->query( "ALTER TABLE oldimage ALTER oi_deleted SET DEFAULT 0" );
1533         }
1534         else
1535                 echo "... column \"oldimage.oi_deleted\" is already of type \"smallint\"\n";
1536
1537
1538         foreach ($newindexes as $ni) {
1539                 if (pg_index_exists($ni[0], $ni[1])) {
1540                         echo "... index \"$ni[1]\" on table \"$ni[0]\" already exists\n";
1541                         continue;
1542                 }
1543                 echo "Creating index \"$ni[1]\" on table \"$ni[0]\" $ni[2]\n";
1544                 $wgDatabase->query( "CREATE INDEX $ni[1] ON $ni[0] $ni[2]" );
1545         }
1546
1547         foreach ($newrules as $nr) {
1548                 if ($wgDatabase->ruleExists($nr[0], $nr[1])) {
1549                         echo "... rule \"$nr[1]\" on table \"$nr[0]\" already exists\n";
1550                         continue;
1551                 }
1552                 echo "Adding rule \"$nr[1]\" to table \"$nr[0]\"\n";
1553                 dbsource(archive($nr[2]));
1554         }
1555
1556         if ($wgDatabase->hasConstraint("oldimage_oi_name_fkey")) {
1557                 echo "Making foriegn key on table \"oldimage\" (to image) a cascade delete\n";
1558                 $wgDatabase->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey" );
1559                 $wgDatabase->query( "ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascade ".
1560                         "FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE" );
1561         }
1562         else
1563                 echo "... table \"oldimage\" has correct cascade delete foreign key to image\n";
1564
1565         if (!$wgDatabase->triggerExists("page", "page_deleted")) {
1566                 echo "Adding function and trigger \"page_deleted\" to table \"page\"\n";
1567                 dbsource(archive('patch-page_deleted.sql'));
1568         }
1569         else
1570                 echo "... table \"page\" has \"page_deleted\" trigger\n";
1571
1572         $fi = $wgDatabase->fieldInfo("recentchanges", "rc_cur_id");
1573         if (!$fi->nullable()) {
1574                 echo "Removing NOT NULL constraint from \"recentchanges.rc_cur_id\"\n";
1575                 dbsource(archive('patch-rc_cur_id-not-null.sql'));
1576         }
1577         else
1578                 echo "... column \"recentchanges.rc_cur_id\" has a NOT NULL constraint\n";
1579
1580         $pu = pg_describe_index("pagelink_unique");
1581         if (!is_null($pu) && ($pu[0] != "pl_from" || $pu[1] != "pl_namespace" || $pu[2] != "pl_title")) {
1582                 echo "Dropping obsolete version of index \"pagelink_unique index\"\n";
1583                 $wgDatabase->query("DROP INDEX pagelink_unique");
1584                 $pu = null;
1585         }
1586         else
1587                 echo "... obsolete version of index \"pagelink_unique index\" does not exist\n";
1588
1589         if (is_null($pu)) {
1590                 echo "Creating index \"pagelink_unique index\"\n";
1591                 $wgDatabase->query("CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title)");
1592         }
1593         else
1594                 echo "... index \"pagelink_unique_index\" aready exists\n";
1595
1596         if (pg_fkey_deltype("revision_rev_user_fkey") == 'r') {
1597                 echo "... constraint \"revision_rev_user_fkey\" is ON DELETE RESTRICT\n";
1598         }
1599         else {
1600                 echo "Changing constraint \"revision_rev_user_fkey\" to ON DELETE RESTRICT\n";
1601                 dbsource(archive('patch-revision_rev_user_fkey.sql'));
1602         }
1603
1604         global $wgExtNewTables, $wgExtPGNewFields, $wgExtNewIndexes;
1605         # Add missing extension tables
1606         foreach ( $wgExtNewTables as $nt ) {
1607                 if ($wgDatabase->tableExists($nt[0])) {
1608                         echo "... table \"$nt[0]\" already exists\n";
1609                         continue;
1610                 }
1611                 echo "Creating table \"$nt[0]\"\n";
1612                 dbsource($nt[1]);
1613         }
1614         # Add missing extension fields
1615         foreach ( $wgExtPGNewFields as $nc ) {
1616                 $fi = $wgDatabase->fieldInfo($nc[0], $nc[1]);
1617                 if (!is_null($fi)) {
1618                         echo "... column \"$nc[0].$nc[1]\" already exists\n";
1619                         continue;
1620                 }
1621                 echo "Adding column \"$nc[0].$nc[1]\"\n";
1622                 $wgDatabase->query( "ALTER TABLE $nc[0] ADD $nc[1] $nc[2]" );
1623         }
1624         # Add missing extension indexes
1625         foreach ( $wgExtNewIndexes as $ni ) {
1626                 if (pg_index_exists($ni[0], $ni[1])) {
1627                         echo "... index \"$ni[1]\" on table \"$ni[0]\" already exists\n";
1628                         continue;
1629                 }
1630                 echo "Creating index \"$ni[1]\" on table \"$ni[0]\"\n";
1631                 dbsource($ni[2]);
1632         }
1633
1634         # Tweak the page_title tsearch2 trigger to filter out slashes
1635         # This is create or replace, so harmless to call if not needed
1636         dbsource(archive('patch-ts2pagetitle.sql'));
1637
1638         ## If the server is 8.3 or higher, rewrite teh tsearch2 triggers
1639         ## in case they have the old 'default' versions
1640         if ( $numver >= 8.3 )
1641                 dbsource(archive('patch-tsearch2funcs.sql'));
1642
1643         return;
1644 }