maintenance/FiveUpgrade.inc

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup Maintenance
   5  */
   6
   7 require_once( 'cleanupDupes.inc' );
   8 require_once( 'userDupes.inc' );
   9 require_once( 'updaters.inc' );
  10
  11 define( 'MW_UPGRADE_COPY',     false );
  12 define( 'MW_UPGRADE_ENCODE',   true  );
  13 define( 'MW_UPGRADE_NULL',     null  );
  14 define( 'MW_UPGRADE_CALLBACK', null  ); // for self-documentation only
  15
  16 /**
  17  * @ingroup Maintenance
  18  */
  19 class FiveUpgrade {
  20         function FiveUpgrade() {
  21                 $this->conversionTables = $this->prepareWindows1252();
  22
  23                 $this->dbw =& $this->newConnection();
  24                 $this->dbr =& $this->streamConnection();
  25
  26                 $this->cleanupSwaps = array();
  27                 $this->emailAuth = false; # don't preauthenticate emails
  28                 $this->maxLag    = 10; # if slaves are lagged more than 10 secs, wait
  29         }
  30
  31         function doing( $step ) {
  32                 return is_null( $this->step ) || $step == $this->step;
  33         }
  34
  35         function upgrade( $step ) {
  36                 $this->step = $step;
  37
  38                 $tables = array(
  39                         'page',
  40                         'links',
  41                         'user',
  42                         'image',
  43                         'oldimage',
  44                         'watchlist',
  45                         'logging',
  46                         'archive',
  47                         'imagelinks',
  48                         'categorylinks',
  49                         'ipblocks',
  50                         'recentchanges',
  51                         'querycache' );
  52                 foreach( $tables as $table ) {
  53                         if( $this->doing( $table ) ) {
  54                                 $method = 'upgrade' . ucfirst( $table );
  55                                 $this->$method();
  56                         }
  57                 }
  58
  59                 if( $this->doing( 'cleanup' ) ) {
  60                         $this->upgradeCleanup();
  61                 }
  62         }
  63
  64
  65         /**
  66          * Open a connection to the master server with the admin rights.
  67          * @return Database
  68          * @access private
  69          */
  70         function &newConnection() {
  71                 global $wgDBadminuser, $wgDBadminpassword, $wgDBtype;
  72                 global $wgDBserver, $wgDBname;
  73                 $dbclass = 'Database' . ucfirst( $wgDBtype ) ;
  74                 $db = new $dbclass( $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname );
  75                 return $db;
  76         }
  77
  78         /**
  79          * Open a second connection to the master server, with buffering off.
  80          * This will let us stream large datasets in and write in chunks on the
  81          * other end.
  82          * @return Database
  83          * @access private
  84          */
  85         function &streamConnection() {
  86                 global $wgDBtype;
  87
  88                 $timeout = 3600 * 24;
  89                 $db =& $this->newConnection();
  90                 $db->bufferResults( false );
  91         if ($wgDBtype == 'mysql') {
  92                         $db->query( "SET net_read_timeout=$timeout" );
  93                         $db->query( "SET net_write_timeout=$timeout" );
  94                 }
  95                 return $db;
  96         }
  97
  98         /**
  99          * Prepare a conversion array for converting Windows Code Page 1252 to
 100          * UTF-8. This should provide proper conversion of text that was miscoded
 101          * as Windows-1252 by naughty user-agents, and doesn't rely on an outside
 102          * iconv library.
 103          *
 104          * @return array
 105          * @access private
 106          */
 107         function prepareWindows1252() {
 108                 # Mappings from:
 109                 # http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT
 110                 static $cp1252 = array(
 111                         0x80 => 0x20AC, #EURO SIGN
 112                         0x81 => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 113                         0x82 => 0x201A, #SINGLE LOW-9 QUOTATION MARK
 114                         0x83 => 0x0192, #LATIN SMALL LETTER F WITH HOOK
 115                         0x84 => 0x201E, #DOUBLE LOW-9 QUOTATION MARK
 116                         0x85 => 0x2026, #HORIZONTAL ELLIPSIS
 117                         0x86 => 0x2020, #DAGGER
 118                         0x87 => 0x2021, #DOUBLE DAGGER
 119                         0x88 => 0x02C6, #MODIFIER LETTER CIRCUMFLEX ACCENT
 120                         0x89 => 0x2030, #PER MILLE SIGN
 121                         0x8A => 0x0160, #LATIN CAPITAL LETTER S WITH CARON
 122                         0x8B => 0x2039, #SINGLE LEFT-POINTING ANGLE QUOTATION MARK
 123                         0x8C => 0x0152, #LATIN CAPITAL LIGATURE OE
 124                         0x8D => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 125                         0x8E => 0x017D, #LATIN CAPITAL LETTER Z WITH CARON
 126                         0x8F => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 127                         0x90 => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 128                         0x91 => 0x2018, #LEFT SINGLE QUOTATION MARK
 129                         0x92 => 0x2019, #RIGHT SINGLE QUOTATION MARK
 130                         0x93 => 0x201C, #LEFT DOUBLE QUOTATION MARK
 131                         0x94 => 0x201D, #RIGHT DOUBLE QUOTATION MARK
 132                         0x95 => 0x2022, #BULLET
 133                         0x96 => 0x2013, #EN DASH
 134                         0x97 => 0x2014, #EM DASH
 135                         0x98 => 0x02DC, #SMALL TILDE
 136                         0x99 => 0x2122, #TRADE MARK SIGN
 137                         0x9A => 0x0161, #LATIN SMALL LETTER S WITH CARON
 138                         0x9B => 0x203A, #SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
 139                         0x9C => 0x0153, #LATIN SMALL LIGATURE OE
 140                         0x9D => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 141                         0x9E => 0x017E, #LATIN SMALL LETTER Z WITH CARON
 142                         0x9F => 0x0178, #LATIN CAPITAL LETTER Y WITH DIAERESIS
 143                         );
 144                 $pairs = array();
 145                 for( $i = 0; $i < 0x100; $i++ ) {
 146                         $unicode = isset( $cp1252[$i] ) ? $cp1252[$i] : $i;
 147                         $pairs[chr( $i )] = codepointToUtf8( $unicode );
 148                 }
 149                 return $pairs;
 150         }
 151
 152         /**
 153          * Convert from 8-bit Windows-1252 to UTF-8 if necessary.
 154          * @param string $text
 155          * @return string
 156          * @access private
 157          */
 158         function conv( $text ) {
 159                 global $wgUseLatin1;
 160                 return is_null( $text )
 161                         ? null
 162                         : ( $wgUseLatin1
 163                                 ? strtr( $text, $this->conversionTables )
 164                                 : $text );
 165         }
 166
 167         /**
 168          * Dump timestamp and message to output
 169          * @param string $message
 170          * @access private
 171          */
 172         function log( $message ) {
 173                 echo wfWikiID() . ' ' . wfTimestamp( TS_DB ) . ': ' . $message . "\n";
 174                 flush();
 175         }
 176
 177         /**
 178          * Initialize the chunked-insert system.
 179          * Rows will be inserted in chunks of the given number, rather
 180          * than in a giant INSERT...SELECT query, to keep the serialized
 181          * MySQL database replication from getting hung up. This way other
 182          * things can be going on during conversion without waiting for
 183          * slaves to catch up as badly.
 184          *
 185          * @param int $chunksize Number of rows to insert at once
 186          * @param int $final Total expected number of rows / id of last row,
 187          *                   used for progress reports.
 188          * @param string $table to insert on
 189          * @param string $fname function name to report in SQL
 190          * @access private
 191          */
 192         function setChunkScale( $chunksize, $final, $table, $fname ) {
 193                 $this->chunkSize  = $chunksize;
 194                 $this->chunkFinal = $final;
 195                 $this->chunkCount = 0;
 196                 $this->chunkStartTime = wfTime();
 197                 $this->chunkOptions = array( 'IGNORE' );
 198                 $this->chunkTable = $table;
 199                 $this->chunkFunction = $fname;
 200         }
 201
 202         /**
 203          * Chunked inserts: perform an insert if we've reached the chunk limit.
 204          * Prints a progress report with estimated completion time.
 205          * @param array &$chunk -- This will be emptied if an insert is done.
 206          * @param int $key A key identifier to use in progress estimation in
 207          *                 place of the number of rows inserted. Use this if
 208          *                 you provided a max key number instead of a count
 209          *                 as the final chunk number in setChunkScale()
 210          * @access private
 211          */
 212         function addChunk( &$chunk, $key = null ) {
 213                 if( count( $chunk ) >= $this->chunkSize ) {
 214                         $this->insertChunk( $chunk );
 215
 216                         $this->chunkCount += count( $chunk );
 217                         $now = wfTime();
 218                         $delta = $now - $this->chunkStartTime;
 219                         $rate = $this->chunkCount / $delta;
 220
 221                         if( is_null( $key ) ) {
 222                                 $completed = $this->chunkCount;
 223                         } else {
 224                                 $completed = $key;
 225                         }
 226                         $portion = $completed / $this->chunkFinal;
 227
 228                         $estimatedTotalTime = $delta / $portion;
 229                         $eta = $this->chunkStartTime + $estimatedTotalTime;
 230
 231                         printf( "%s: %6.2f%% done on %s; ETA %s [%d/%d] %.2f/sec\n",
 232                                 wfTimestamp( TS_DB, intval( $now ) ),
 233                                 $portion * 100.0,
 234                                 $this->chunkTable,
 235                                 wfTimestamp( TS_DB, intval( $eta ) ),
 236                                 $completed,
 237                                 $this->chunkFinal,
 238                                 $rate );
 239                         flush();
 240
 241                         $chunk = array();
 242                 }
 243         }
 244
 245         /**
 246          * Chunked inserts: perform an insert unconditionally, at the end, and log.
 247          * @param array &$chunk -- This will be emptied if an insert is done.
 248          * @access private
 249          */
 250         function lastChunk( &$chunk ) {
 251                 $n = count( $chunk );
 252                 if( $n > 0 ) {
 253                         $this->insertChunk( $chunk );
 254                 }
 255                 $this->log( "100.00% done on $this->chunkTable (last chunk $n rows)." );
 256         }
 257
 258         /**
 259          * Chunked inserts: perform an insert.
 260          * @param array &$chunk -- This will be emptied if an insert is done.
 261          * @access private
 262          */
 263         function insertChunk( &$chunk ) {
 264                 // Give slaves a chance to catch up
 265                 wfWaitForSlaves( $this->maxLag );
 266                 $this->dbw->insert( $this->chunkTable, $chunk, $this->chunkFunction, $this->chunkOptions );
 267         }
 268
 269
 270         /**
 271          * Copy and transcode a table to table_temp.
 272          * @param string $name Base name of the source table
 273          * @param string $tabledef CREATE TABLE definition, w/ $1 for the name
 274          * @param array $fields set of destination fields to these constants:
 275          *              MW_UPGRADE_COPY   - straight copy
 276          *              MW_UPGRADE_ENCODE - for old Latin1 wikis, conv to UTF-8
 277          *              MW_UPGRADE_NULL   - just put NULL
 278          * @param callable $callback An optional callback to modify the data
 279          *                           or perform other processing. Func should be
 280          *                           ( object $row, array $copy ) and return $copy
 281          * @access private
 282          */
 283         function copyTable( $name, $tabledef, $fields, $callback = null ) {
 284                 $fname = 'FiveUpgrade::copyTable';
 285
 286                 $name_temp = $name . '_temp';
 287                 $this->log( "Migrating $name table to $name_temp..." );
 288
 289                 $table_temp = $this->dbw->tableName( $name_temp );
 290
 291                 // Create temporary table; we're going to copy everything in there,
 292                 // then at the end rename the final tables into place.
 293                 $def = str_replace( '$1', $table_temp, $tabledef );
 294                 $this->dbw->query( $def, $fname );
 295
 296                 $numRecords = $this->dbw->selectField( $name, 'COUNT(*)', '', $fname );
 297                 $this->setChunkScale( 100, $numRecords, $name_temp, $fname );
 298
 299                 // Pull all records from the second, streaming database connection.
 300                 $sourceFields = array_keys( array_filter( $fields,
 301                         create_function( '$x', 'return $x !== MW_UPGRADE_NULL;' ) ) );
 302                 $result = $this->dbr->select( $name,
 303                         $sourceFields,
 304                         '',
 305                         $fname );
 306
 307                 $add = array();
 308                 while( $row = $this->dbr->fetchObject( $result ) ) {
 309                         $copy = array();
 310                         foreach( $fields as $field => $source ) {
 311                                 if( $source === MW_UPGRADE_COPY ) {
 312                                         $copy[$field] = $row->$field;
 313                                 } elseif( $source === MW_UPGRADE_ENCODE ) {
 314                                         $copy[$field] = $this->conv( $row->$field );
 315                                 } elseif( $source === MW_UPGRADE_NULL ) {
 316                                         $copy[$field] = null;
 317                                 } else {
 318                                         $this->log( "Unknown field copy type: $field => $source" );
 319                                 }
 320                         }
 321                         if( is_callable( $callback ) ) {
 322                                 $copy = call_user_func( $callback, $row, $copy );
 323                         }
 324                         $add[] = $copy;
 325                         $this->addChunk( $add );
 326                 }
 327                 $this->lastChunk( $add );
 328                 $this->dbr->freeResult( $result );
 329
 330                 $this->log( "Done converting $name." );
 331                 $this->cleanupSwaps[] = $name;
 332         }
 333
 334         function upgradePage() {
 335                 $fname = "FiveUpgrade::upgradePage";
 336                 $chunksize = 100;
 337
 338                 if( $this->dbw->tableExists( 'page' ) ) {
 339                         $this->log( 'Page table already exists; aborting.' );
 340                         die( -1 );
 341                 }
 342
 343                 $this->log( "Checking cur table for unique title index and applying if necessary" );
 344                 checkDupes( true );
 345
 346                 $this->log( "...converting from cur/old to page/revision/text DB structure." );
 347
 348                 list ($cur, $old, $page, $revision, $text) = $this->dbw->tableNamesN( 'cur', 'old', 'page', 'revision', 'text' );
 349
 350                 $this->log( "Creating page and revision tables..." );
 351                 $this->dbw->query("CREATE TABLE $page (
 352                         page_id int(8) unsigned NOT NULL auto_increment,
 353                         page_namespace int NOT NULL,
 354                         page_title varchar(255) binary NOT NULL,
 355                         page_restrictions tinyblob NOT NULL default '',
 356                         page_counter bigint(20) unsigned NOT NULL default '0',
 357                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 358                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 359                         page_random real unsigned NOT NULL,
 360                         page_touched char(14) binary NOT NULL default '',
 361                         page_latest int(8) unsigned NOT NULL,
 362                         page_len int(8) unsigned NOT NULL,
 363
 364                         PRIMARY KEY page_id (page_id),
 365                         UNIQUE INDEX name_title (page_namespace,page_title),
 366                         INDEX (page_random),
 367                         INDEX (page_len)
 368                         ) TYPE=InnoDB", $fname );
 369                 $this->dbw->query("CREATE TABLE $revision (
 370                         rev_id int(8) unsigned NOT NULL auto_increment,
 371                         rev_page int(8) unsigned NOT NULL,
 372                         rev_text_id int(8) unsigned NOT NULL,
 373                         rev_comment tinyblob NOT NULL default '',
 374                         rev_user int(5) unsigned NOT NULL default '0',
 375                         rev_user_text varchar(255) binary NOT NULL default '',
 376                         rev_timestamp char(14) binary NOT NULL default '',
 377                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 378                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 379
 380                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 381                         UNIQUE INDEX rev_id (rev_id),
 382                         INDEX rev_timestamp (rev_timestamp),
 383                         INDEX page_timestamp (rev_page,rev_timestamp),
 384                         INDEX user_timestamp (rev_user,rev_timestamp),
 385                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 386                         ) TYPE=InnoDB", $fname );
 387
 388                 $maxold = intval( $this->dbw->selectField( 'old', 'max(old_id)', '', $fname ) );
 389                 $this->log( "Last old record is {$maxold}" );
 390
 391                 global $wgLegacySchemaConversion;
 392                 if( $wgLegacySchemaConversion ) {
 393                         // Create HistoryBlobCurStub entries.
 394                         // Text will be pulled from the leftover 'cur' table at runtime.
 395                         echo "......Moving metadata from cur; using blob references to text in cur table.\n";
 396                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 397                         $cur_flags = "'object'";
 398                 } else {
 399                         // Copy all cur text in immediately: this may take longer but avoids
 400                         // having to keep an extra table around.
 401                         echo "......Moving text from cur.\n";
 402                         $cur_text = 'cur_text';
 403                         $cur_flags = "''";
 404                 }
 405
 406                 $maxcur = $this->dbw->selectField( 'cur', 'max(cur_id)', '', $fname );
 407                 $this->log( "Last cur entry is $maxcur" );
 408
 409                 /**
 410                  * Copy placeholder records for each page's current version into old
 411                  * Don't do any conversion here; text records are converted at runtime
 412                  * based on the flags (and may be originally binary!) while the meta
 413                  * fields will be converted in the old -> rev and cur -> page steps.
 414                  */
 415                 $this->setChunkScale( $chunksize, $maxcur, 'old', $fname );
 416                 $result = $this->dbr->query(
 417                         "SELECT cur_id, cur_namespace, cur_title, $cur_text AS text, cur_comment,
 418                         cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags AS flags
 419                         FROM $cur
 420                         ORDER BY cur_id", $fname );
 421                 $add = array();
 422                 while( $row = $this->dbr->fetchObject( $result ) ) {
 423                         $add[] = array(
 424                                 'old_namespace'  => $row->cur_namespace,
 425                                 'old_title'      => $row->cur_title,
 426                                 'old_text'       => $row->text,
 427                                 'old_comment'    => $row->cur_comment,
 428                                 'old_user'       => $row->cur_user,
 429                                 'old_user_text'  => $row->cur_user_text,
 430                                 'old_timestamp'  => $row->cur_timestamp,
 431                                 'old_minor_edit' => $row->cur_minor_edit,
 432                                 'old_flags'      => $row->flags );
 433                         $this->addChunk( $add, $row->cur_id );
 434                 }
 435                 $this->lastChunk( $add );
 436                 $this->dbr->freeResult( $result );
 437
 438                 /**
 439                  * Copy revision metadata from old into revision.
 440                  * We'll also do UTF-8 conversion of usernames and comments.
 441                  */
 442                 #$newmaxold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 443                 #$this->setChunkScale( $chunksize, $newmaxold, 'revision', $fname );
 444                 #$countold = $this->dbw->selectField( 'old', 'count(old_id)', '', $fname );
 445                 $countold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 446                 $this->setChunkScale( $chunksize, $countold, 'revision', $fname );
 447
 448                 $this->log( "......Setting up revision table." );
 449                 $result = $this->dbr->query(
 450                         "SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 451                         old_timestamp, old_minor_edit
 452                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 453                         $fname );
 454
 455                 $add = array();
 456                 while( $row = $this->dbr->fetchObject( $result ) ) {
 457                         $add[] = array(
 458                                 'rev_id'         =>              $row->old_id,
 459                                 'rev_page'       =>              $row->cur_id,
 460                                 'rev_text_id'    =>              $row->old_id,
 461                                 'rev_comment'    => $this->conv( $row->old_comment ),
 462                                 'rev_user'       =>              $row->old_user,
 463                                 'rev_user_text'  => $this->conv( $row->old_user_text ),
 464                                 'rev_timestamp'  =>              $row->old_timestamp,
 465                                 'rev_minor_edit' =>              $row->old_minor_edit );
 466                         $this->addChunk( $add );
 467                 }
 468                 $this->lastChunk( $add );
 469                 $this->dbr->freeResult( $result );
 470
 471
 472                 /**
 473                  * Copy page metadata from cur into page.
 474                  * We'll also do UTF-8 conversion of titles.
 475                  */
 476                 $this->log( "......Setting up page table." );
 477                 $this->setChunkScale( $chunksize, $maxcur, 'page', $fname );
 478                 $result = $this->dbr->query( "
 479                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 480                                 cur_random, cur_touched, rev_id, LENGTH(cur_text) AS len
 481                         FROM $cur,$revision
 482                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}
 483                         ORDER BY cur_id", $fname );
 484                 $add = array();
 485                 while( $row = $this->dbr->fetchObject( $result ) ) {
 486                         $add[] = array(
 487                                 'page_id'           =>              $row->cur_id,
 488                                 'page_namespace'    =>              $row->cur_namespace,
 489                                 'page_title'        => $this->conv( $row->cur_title ),
 490                                 'page_restrictions' =>              $row->cur_restrictions,
 491                                 'page_counter'      =>              $row->cur_counter,
 492                                 'page_is_redirect'  =>              $row->cur_is_redirect,
 493                                 'page_is_new'       =>              $row->cur_is_new,
 494                                 'page_random'       =>              $row->cur_random,
 495                                 'page_touched'      =>              $this->dbw->timestamp(),
 496                                 'page_latest'       =>              $row->rev_id,
 497                                 'page_len'          =>              $row->len );
 498                         #$this->addChunk( $add, $row->cur_id );
 499                         $this->addChunk( $add );
 500                 }
 501                 $this->lastChunk( $add );
 502                 $this->dbr->freeResult( $result );
 503
 504                 $this->log( "...done with cur/old -> page/revision." );
 505         }
 506
 507         function upgradeLinks() {
 508                 $fname = 'FiveUpgrade::upgradeLinks';
 509                 $chunksize = 200;
 510                 list ($links, $brokenlinks, $pagelinks, $cur) = $this->dbw->tableNamesN( 'links', 'brokenlinks', 'pagelinks', 'cur' );
 511
 512                 $this->log( 'Checking for interwiki table change in case of bogus items...' );
 513                 if( $this->dbw->fieldExists( 'interwiki', 'iw_trans' ) ) {
 514                         $this->log( 'interwiki has iw_trans.' );
 515                 } else {
 516                         global $IP;
 517                         $this->log( 'adding iw_trans...' );
 518                         dbsource( $IP . '/maintenance/archives/patch-interwiki-trans.sql', $this->dbw );
 519                         $this->log( 'added iw_trans.' );
 520                 }
 521
 522                 $this->log( 'Creating pagelinks table...' );
 523                 $this->dbw->query( "
 524 CREATE TABLE $pagelinks (
 525   -- Key to the page_id of the page containing the link.
 526   pl_from int(8) unsigned NOT NULL default '0',
 527
 528   -- Key to page_namespace/page_title of the target page.
 529   -- The target page may or may not exist, and due to renames
 530   -- and deletions may refer to different page records as time
 531   -- goes by.
 532   pl_namespace int NOT NULL default '0',
 533   pl_title varchar(255) binary NOT NULL default '',
 534
 535   UNIQUE KEY pl_from(pl_from,pl_namespace,pl_title),
 536   KEY (pl_namespace,pl_title)
 537
 538 ) TYPE=InnoDB" );
 539
 540                 $this->log( 'Importing live links -> pagelinks' );
 541                 $nlinks = $this->dbw->selectField( 'links', 'count(*)', '', $fname );
 542                 if( $nlinks ) {
 543                         $this->setChunkScale( $chunksize, $nlinks, 'pagelinks', $fname );
 544                         $result = $this->dbr->query( "
 545                           SELECT l_from,cur_namespace,cur_title
 546                                 FROM $links, $cur
 547                                 WHERE l_to=cur_id", $fname );
 548                         $add = array();
 549                         while( $row = $this->dbr->fetchObject( $result ) ) {
 550                                 $add[] = array(
 551                                         'pl_from'      =>              $row->l_from,
 552                                         'pl_namespace' =>              $row->cur_namespace,
 553                                         'pl_title'     => $this->conv( $row->cur_title ) );
 554                                 $this->addChunk( $add );
 555                         }
 556                         $this->lastChunk( $add );
 557                 } else {
 558                         $this->log( 'no links!' );
 559                 }
 560
 561                 $this->log( 'Importing brokenlinks -> pagelinks' );
 562                 $nbrokenlinks = $this->dbw->selectField( 'brokenlinks', 'count(*)', '', $fname );
 563                 if( $nbrokenlinks ) {
 564                         $this->setChunkScale( $chunksize, $nbrokenlinks, 'pagelinks', $fname );
 565                         $result = $this->dbr->query(
 566                                 "SELECT bl_from, bl_to FROM $brokenlinks",
 567                                 $fname );
 568                         $add = array();
 569                         while( $row = $this->dbr->fetchObject( $result ) ) {
 570                                 $pagename = $this->conv( $row->bl_to );
 571                                 $title = Title::newFromText( $pagename );
 572                                 if( is_null( $title ) ) {
 573                                         $this->log( "** invalid brokenlink: $row->bl_from -> '$pagename' (converted from '$row->bl_to')" );
 574                                 } else {
 575                                         $add[] = array(
 576                                                 'pl_from'      => $row->bl_from,
 577                                                 'pl_namespace' => $title->getNamespace(),
 578                                                 'pl_title'     => $title->getDBkey() );
 579                                         $this->addChunk( $add );
 580                                 }
 581                         }
 582                         $this->lastChunk( $add );
 583                 } else {
 584                         $this->log( 'no brokenlinks!' );
 585                 }
 586
 587                 $this->log( 'Done with links.' );
 588         }
 589
 590         function upgradeUser() {
 591                 // Apply unique index, if necessary:
 592                 $duper = new UserDupes( $this->dbw );
 593                 if( $duper->hasUniqueIndex() ) {
 594                         $this->log( "Already have unique user_name index." );
 595                 } else {
 596                         $this->log( "Clearing user duplicates..." );
 597                         if( !$duper->clearDupes() ) {
 598                                 $this->log( "WARNING: Duplicate user accounts, may explode!" );
 599                         }
 600                 }
 601
 602                 $tabledef = <<<END
 603 CREATE TABLE $1 (
 604   user_id int(5) unsigned NOT NULL auto_increment,
 605   user_name varchar(255) binary NOT NULL default '',
 606   user_real_name varchar(255) binary NOT NULL default '',
 607   user_password tinyblob NOT NULL default '',
 608   user_newpassword tinyblob NOT NULL default '',
 609   user_email tinytext NOT NULL default '',
 610   user_options blob NOT NULL default '',
 611   user_touched char(14) binary NOT NULL default '',
 612   user_token char(32) binary NOT NULL default '',
 613   user_email_authenticated CHAR(14) BINARY,
 614   user_email_token CHAR(32) BINARY,
 615   user_email_token_expires CHAR(14) BINARY,
 616
 617   PRIMARY KEY user_id (user_id),
 618   UNIQUE INDEX user_name (user_name),
 619   INDEX (user_email_token)
 620
 621 ) TYPE=InnoDB
 622 END;
 623                 $fields = array(
 624                         'user_id'                  => MW_UPGRADE_COPY,
 625                         'user_name'                => MW_UPGRADE_ENCODE,
 626                         'user_real_name'           => MW_UPGRADE_ENCODE,
 627                         'user_password'            => MW_UPGRADE_COPY,
 628                         'user_newpassword'         => MW_UPGRADE_COPY,
 629                         'user_email'               => MW_UPGRADE_ENCODE,
 630                         'user_options'             => MW_UPGRADE_ENCODE,
 631                         'user_touched'             => MW_UPGRADE_CALLBACK,
 632                         'user_token'               => MW_UPGRADE_COPY,
 633                         'user_email_authenticated' => MW_UPGRADE_CALLBACK,
 634                         'user_email_token'         => MW_UPGRADE_NULL,
 635                         'user_email_token_expires' => MW_UPGRADE_NULL );
 636                 $this->copyTable( 'user', $tabledef, $fields,
 637                         array( &$this, 'userCallback' ) );
 638         }
 639
 640         function userCallback( $row, $copy ) {
 641                 $now = $this->dbw->timestamp();
 642                 $copy['user_touched'] = $now;
 643                 $copy['user_email_authenticated'] = $this->emailAuth ? $now : null;
 644                 return $copy;
 645         }
 646
 647         function upgradeImage() {
 648                 $tabledef = <<<END
 649 CREATE TABLE $1 (
 650   img_name varchar(255) binary NOT NULL default '',
 651   img_size int(8) unsigned NOT NULL default '0',
 652   img_width int(5)  NOT NULL default '0',
 653   img_height int(5)  NOT NULL default '0',
 654   img_metadata mediumblob NOT NULL,
 655   img_bits int(3)  NOT NULL default '0',
 656   img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 657   img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart") NOT NULL default "unknown",
 658   img_minor_mime varchar(32) NOT NULL default "unknown",
 659   img_description tinyblob NOT NULL default '',
 660   img_user int(5) unsigned NOT NULL default '0',
 661   img_user_text varchar(255) binary NOT NULL default '',
 662   img_timestamp char(14) binary NOT NULL default '',
 663
 664   PRIMARY KEY img_name (img_name),
 665   INDEX img_size (img_size),
 666   INDEX img_timestamp (img_timestamp)
 667 ) TYPE=InnoDB
 668 END;
 669                 $fields = array(
 670                         'img_name'        => MW_UPGRADE_ENCODE,
 671                         'img_size'        => MW_UPGRADE_COPY,
 672                         'img_width'       => MW_UPGRADE_CALLBACK,
 673                         'img_height'      => MW_UPGRADE_CALLBACK,
 674                         'img_metadata'    => MW_UPGRADE_CALLBACK,
 675                         'img_bits'        => MW_UPGRADE_CALLBACK,
 676                         'img_media_type'  => MW_UPGRADE_CALLBACK,
 677                         'img_major_mime'  => MW_UPGRADE_CALLBACK,
 678                         'img_minor_mime'  => MW_UPGRADE_CALLBACK,
 679                         'img_description' => MW_UPGRADE_ENCODE,
 680                         'img_user'        => MW_UPGRADE_COPY,
 681                         'img_user_text'   => MW_UPGRADE_ENCODE,
 682                         'img_timestamp'   => MW_UPGRADE_COPY );
 683                 $this->copyTable( 'image', $tabledef, $fields,
 684                         array( &$this, 'imageCallback' ) );
 685         }
 686
 687         function imageCallback( $row, $copy ) {
 688                 global $options;
 689                 if( !isset( $options['noimage'] ) ) {
 690                         // Fill in the new image info fields
 691                         $info = $this->imageInfo( $row->img_name );
 692
 693                         $copy['img_width'     ] = $info['width'];
 694                         $copy['img_height'    ] = $info['height'];
 695                         $copy['img_metadata'  ] = ""; // loaded on-demand
 696                         $copy['img_bits'      ] = $info['bits'];
 697                         $copy['img_media_type'] = $info['media'];
 698                         $copy['img_major_mime'] = $info['major'];
 699                         $copy['img_minor_mime'] = $info['minor'];
 700                 }
 701
 702                 // If doing UTF8 conversion the file must be renamed
 703                 $this->renameFile( $row->img_name, 'wfImageDir' );
 704
 705                 return $copy;
 706         }
 707
 708         function imageInfo( $filename ) {
 709                 $info = array(
 710                         'width'  => 0,
 711                         'height' => 0,
 712                         'bits'   => 0,
 713                         'media'  => '',
 714                         'major'  => '',
 715                         'minor'  => '' );
 716
 717                 $magic = MimeMagic::singleton();
 718                 $mime = $magic->guessMimeType( $filename, true );
 719                 list( $info['major'], $info['minor'] ) = explode( '/', $mime );
 720
 721                 $info['media'] = $magic->getMediaType( $filename, $mime );
 722
 723                 $image = UnregisteredLocalFile::newFromPath( $filename, $mime );
 724
 725                 $info['width'] = $image->getWidth();
 726                 $info['height'] = $image->getHeight();
 727
 728                 $gis = $image->getImageSize();
 729                 if ( isset( $gis['bits'] ) ) {
 730                         $info['bits'] = $gis['bits'];
 731                 }
 732
 733                 return $info;
 734         }
 735
 736
 737         /**
 738          * Truncate a table.
 739          * @param string $table The table name to be truncated
 740          */
 741         function clearTable( $table ) {
 742                 print "Clearing $table...\n";
 743                 $tableName = $this->db->tableName( $table );
 744                 $this->db->query( "TRUNCATE $tableName" );
 745         }
 746
 747         /**
 748          * Rename a given image or archived image file to the converted filename,
 749          * leaving a symlink for URL compatibility.
 750          *
 751          * @param string $oldname pre-conversion filename
 752          * @param string $basename pre-conversion base filename for dir hashing, if an archive
 753          * @access private
 754          */
 755         function renameFile( $oldname, $subdirCallback='wfImageDir', $basename=null ) {
 756                 $newname = $this->conv( $oldname );
 757                 if( $newname == $oldname ) {
 758                         // No need to rename; another field triggered this row.
 759                         return false;
 760                 }
 761
 762                 if( is_null( $basename ) ) $basename = $oldname;
 763                 $ubasename = $this->conv( $basename );
 764                 $oldpath = call_user_func( $subdirCallback, $basename ) . '/' . $oldname;
 765                 $newpath = call_user_func( $subdirCallback, $ubasename ) . '/' . $newname;
 766
 767                 $this->log( "$oldpath -> $newpath" );
 768                 if( rename( $oldpath, $newpath ) ) {
 769                         $relpath = wfRelativePath( $newpath, dirname( $oldpath ) );
 770                         if( !symlink( $relpath, $oldpath ) ) {
 771                                 $this->log( "... symlink failed!" );
 772                         }
 773                         return $newname;
 774                 } else {
 775                         $this->log( "... rename failed!" );
 776                         return false;
 777                 }
 778         }
 779
 780         function upgradeOldImage() {
 781                 $tabledef = <<<END
 782 CREATE TABLE $1 (
 783   -- Base filename: key to image.img_name
 784   oi_name varchar(255) binary NOT NULL default '',
 785
 786   -- Filename of the archived file.
 787   -- This is generally a timestamp and '!' prepended to the base name.
 788   oi_archive_name varchar(255) binary NOT NULL default '',
 789
 790   -- Other fields as in image...
 791   oi_size int(8) unsigned NOT NULL default 0,
 792   oi_width int(5) NOT NULL default 0,
 793   oi_height int(5) NOT NULL default 0,
 794   oi_bits int(3) NOT NULL default 0,
 795   oi_description tinyblob NOT NULL default '',
 796   oi_user int(5) unsigned NOT NULL default '0',
 797   oi_user_text varchar(255) binary NOT NULL default '',
 798   oi_timestamp char(14) binary NOT NULL default '',
 799
 800   INDEX oi_name (oi_name(10))
 801
 802 ) TYPE=InnoDB;
 803 END;
 804                 $fields = array(
 805                         'oi_name'         => MW_UPGRADE_ENCODE,
 806                         'oi_archive_name' => MW_UPGRADE_ENCODE,
 807                         'oi_size'         => MW_UPGRADE_COPY,
 808                         'oi_width'        => MW_UPGRADE_CALLBACK,
 809                         'oi_height'       => MW_UPGRADE_CALLBACK,
 810                         'oi_bits'         => MW_UPGRADE_CALLBACK,
 811                         'oi_description'  => MW_UPGRADE_ENCODE,
 812                         'oi_user'         => MW_UPGRADE_COPY,
 813                         'oi_user_text'    => MW_UPGRADE_ENCODE,
 814                         'oi_timestamp'    => MW_UPGRADE_COPY );
 815                 $this->copyTable( 'oldimage', $tabledef, $fields,
 816                         array( &$this, 'oldimageCallback' ) );
 817         }
 818
 819         function oldimageCallback( $row, $copy ) {
 820                 global $options;
 821                 if( !isset( $options['noimage'] ) ) {
 822                         // Fill in the new image info fields
 823                         $info = $this->imageInfo( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 824                         $copy['oi_width' ] = $info['width' ];
 825                         $copy['oi_height'] = $info['height'];
 826                         $copy['oi_bits'  ] = $info['bits'  ];
 827                 }
 828
 829                 // If doing UTF8 conversion the file must be renamed
 830                 $this->renameFile( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 831
 832                 return $copy;
 833         }
 834
 835
 836         function upgradeWatchlist() {
 837                 $fname = 'FiveUpgrade::upgradeWatchlist';
 838                 $chunksize = 100;
 839
 840                 list ($watchlist, $watchlist_temp) = $this->dbw->tableNamesN( 'watchlist', 'watchlist_temp' );
 841
 842                 $this->log( 'Migrating watchlist table to watchlist_temp...' );
 843                 $this->dbw->query(
 844 "CREATE TABLE $watchlist_temp (
 845   -- Key to user_id
 846   wl_user int(5) unsigned NOT NULL,
 847
 848   -- Key to page_namespace/page_title
 849   -- Note that users may watch patches which do not exist yet,
 850   -- or existed in the past but have been deleted.
 851   wl_namespace int NOT NULL default '0',
 852   wl_title varchar(255) binary NOT NULL default '',
 853
 854   -- Timestamp when user was last sent a notification e-mail;
 855   -- cleared when the user visits the page.
 856   -- FIXME: add proper null support etc
 857   wl_notificationtimestamp varchar(14) binary NOT NULL default '0',
 858
 859   UNIQUE KEY (wl_user, wl_namespace, wl_title),
 860   KEY namespace_title (wl_namespace,wl_title)
 861
 862 ) TYPE=InnoDB;", $fname );
 863
 864                 // Fix encoding for Latin-1 upgrades, add some fields,
 865                 // and double article to article+talk pairs
 866                 $numwatched = $this->dbw->selectField( 'watchlist', 'count(*)', '', $fname );
 867
 868                 $this->setChunkScale( $chunksize, $numwatched * 2, 'watchlist_temp', $fname );
 869                 $result = $this->dbr->select( 'watchlist',
 870                         array(
 871                                 'wl_user',
 872                                 'wl_namespace',
 873                                 'wl_title' ),
 874                         '',
 875                         $fname );
 876
 877                 $add = array();
 878                 while( $row = $this->dbr->fetchObject( $result ) ) {
 879                         $add[] = array(
 880                                 'wl_user'      =>                        $row->wl_user,
 881                                 'wl_namespace' => Namespace::getSubject( $row->wl_namespace ),
 882                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 883                                 'wl_notificationtimestamp' =>            '0' );
 884                         $this->addChunk( $add );
 885
 886                         $add[] = array(
 887                                 'wl_user'      =>                        $row->wl_user,
 888                                 'wl_namespace' =>    Namespace::getTalk( $row->wl_namespace ),
 889                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 890                                 'wl_notificationtimestamp' =>            '0' );
 891                         $this->addChunk( $add );
 892                 }
 893                 $this->lastChunk( $add );
 894                 $this->dbr->freeResult( $result );
 895
 896                 $this->log( 'Done converting watchlist.' );
 897                 $this->cleanupSwaps[] = 'watchlist';
 898         }
 899
 900         function upgradeLogging() {
 901                 $tabledef = <<<ENDS
 902 CREATE TABLE $1 (
 903   -- Symbolic keys for the general log type and the action type
 904   -- within the log. The output format will be controlled by the
 905   -- action field, but only the type controls categorization.
 906   log_type char(10) NOT NULL default '',
 907   log_action char(10) NOT NULL default '',
 908
 909   -- Timestamp. Duh.
 910   log_timestamp char(14) NOT NULL default '19700101000000',
 911
 912   -- The user who performed this action; key to user_id
 913   log_user int unsigned NOT NULL default 0,
 914
 915   -- Key to the page affected. Where a user is the target,
 916   -- this will point to the user page.
 917   log_namespace int NOT NULL default 0,
 918   log_title varchar(255) binary NOT NULL default '',
 919
 920   -- Freeform text. Interpreted as edit history comments.
 921   log_comment varchar(255) NOT NULL default '',
 922
 923   -- LF separated list of miscellaneous parameters
 924   log_params blob NOT NULL default '',
 925
 926   KEY type_time (log_type, log_timestamp),
 927   KEY user_time (log_user, log_timestamp),
 928   KEY page_time (log_namespace, log_title, log_timestamp)
 929
 930 ) TYPE=InnoDB
 931 ENDS;
 932                 $fields = array(
 933                         'log_type'      => MW_UPGRADE_COPY,
 934                         'log_action'    => MW_UPGRADE_COPY,
 935                         'log_timestamp' => MW_UPGRADE_COPY,
 936                         'log_user'      => MW_UPGRADE_COPY,
 937                         'log_namespace' => MW_UPGRADE_COPY,
 938                         'log_title'     => MW_UPGRADE_ENCODE,
 939                         'log_comment'   => MW_UPGRADE_ENCODE,
 940                         'log_params'    => MW_UPGRADE_ENCODE );
 941                 $this->copyTable( 'logging', $tabledef, $fields );
 942         }
 943
 944         function upgradeArchive() {
 945                 $tabledef = <<<ENDS
 946 CREATE TABLE $1 (
 947   ar_namespace int NOT NULL default '0',
 948   ar_title varchar(255) binary NOT NULL default '',
 949   ar_text mediumblob NOT NULL default '',
 950
 951   ar_comment tinyblob NOT NULL default '',
 952   ar_user int(5) unsigned NOT NULL default '0',
 953   ar_user_text varchar(255) binary NOT NULL,
 954   ar_timestamp char(14) binary NOT NULL default '',
 955   ar_minor_edit tinyint(1) NOT NULL default '0',
 956
 957   ar_flags tinyblob NOT NULL default '',
 958
 959   ar_rev_id int(8) unsigned,
 960   ar_text_id int(8) unsigned,
 961
 962   KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp)
 963
 964 ) TYPE=InnoDB
 965 ENDS;
 966                 $fields = array(
 967                         'ar_namespace'  => MW_UPGRADE_COPY,
 968                         'ar_title'      => MW_UPGRADE_ENCODE,
 969                         'ar_text'       => MW_UPGRADE_COPY,
 970                         'ar_comment'    => MW_UPGRADE_ENCODE,
 971                         'ar_user'       => MW_UPGRADE_COPY,
 972                         'ar_user_text'  => MW_UPGRADE_ENCODE,
 973                         'ar_timestamp'  => MW_UPGRADE_COPY,
 974                         'ar_minor_edit' => MW_UPGRADE_COPY,
 975                         'ar_flags'      => MW_UPGRADE_COPY,
 976                         'ar_rev_id'     => MW_UPGRADE_NULL,
 977                         'ar_text_id'    => MW_UPGRADE_NULL );
 978                 $this->copyTable( 'archive', $tabledef, $fields );
 979         }
 980
 981         function upgradeImagelinks() {
 982                 global $wgUseLatin1;
 983                 if( $wgUseLatin1 ) {
 984                         $tabledef = <<<ENDS
 985 CREATE TABLE $1 (
 986   -- Key to page_id of the page containing the image / media link.
 987   il_from int(8) unsigned NOT NULL default '0',
 988
 989   -- Filename of target image.
 990   -- This is also the page_title of the file's description page;
 991   -- all such pages are in namespace 6 (NS_IMAGE).
 992   il_to varchar(255) binary NOT NULL default '',
 993
 994   UNIQUE KEY il_from(il_from,il_to),
 995   KEY (il_to)
 996
 997 ) TYPE=InnoDB
 998 ENDS;
 999                         $fields = array(
1000                                 'il_from' => MW_UPGRADE_COPY,
1001                                 'il_to'   => MW_UPGRADE_ENCODE );
1002                         $this->copyTable( 'imagelinks', $tabledef, $fields );
1003                 }
1004         }
1005
1006         function upgradeCategorylinks() {
1007                 global $wgUseLatin1;
1008                 if( $wgUseLatin1 ) {
1009                         $tabledef = <<<ENDS
1010 CREATE TABLE $1 (
1011   cl_from int(8) unsigned NOT NULL default '0',
1012   cl_to varchar(255) binary NOT NULL default '',
1013   cl_sortkey varchar(86) binary NOT NULL default '',
1014   cl_timestamp timestamp NOT NULL,
1015
1016   UNIQUE KEY cl_from(cl_from,cl_to),
1017   KEY cl_sortkey(cl_to,cl_sortkey),
1018   KEY cl_timestamp(cl_to,cl_timestamp)
1019 ) TYPE=InnoDB
1020 ENDS;
1021                         $fields = array(
1022                                 'cl_from'      => MW_UPGRADE_COPY,
1023                                 'cl_to'        => MW_UPGRADE_ENCODE,
1024                                 'cl_sortkey'   => MW_UPGRADE_ENCODE,
1025                                 'cl_timestamp' => MW_UPGRADE_COPY );
1026                         $this->copyTable( 'categorylinks', $tabledef, $fields );
1027                 }
1028         }
1029
1030         function upgradeIpblocks() {
1031                 global $wgUseLatin1;
1032                 if( $wgUseLatin1 ) {
1033                         $tabledef = <<<ENDS
1034 CREATE TABLE $1 (
1035   ipb_id int(8) NOT NULL auto_increment,
1036   ipb_address varchar(40) binary NOT NULL default '',
1037   ipb_user int(8) unsigned NOT NULL default '0',
1038   ipb_by int(8) unsigned NOT NULL default '0',
1039   ipb_reason tinyblob NOT NULL default '',
1040   ipb_timestamp char(14) binary NOT NULL default '',
1041   ipb_auto tinyint(1) NOT NULL default '0',
1042   ipb_expiry char(14) binary NOT NULL default '',
1043
1044   PRIMARY KEY ipb_id (ipb_id),
1045   INDEX ipb_address (ipb_address),
1046   INDEX ipb_user (ipb_user)
1047
1048 ) TYPE=InnoDB
1049 ENDS;
1050                         $fields = array(
1051                                 'ipb_id'        => MW_UPGRADE_COPY,
1052                                 'ipb_address'   => MW_UPGRADE_COPY,
1053                                 'ipb_user'      => MW_UPGRADE_COPY,
1054                                 'ipb_by'        => MW_UPGRADE_COPY,
1055                                 'ipb_reason'    => MW_UPGRADE_ENCODE,
1056                                 'ipb_timestamp' => MW_UPGRADE_COPY,
1057                                 'ipb_auto'      => MW_UPGRADE_COPY,
1058                                 'ipb_expiry'    => MW_UPGRADE_COPY );
1059                         $this->copyTable( 'ipblocks', $tabledef, $fields );
1060                 }
1061         }
1062
1063         function upgradeRecentchanges() {
1064                 // There's a format change in the namespace field
1065                 $tabledef = <<<ENDS
1066 CREATE TABLE $1 (
1067   rc_id int(8) NOT NULL auto_increment,
1068   rc_timestamp varchar(14) binary NOT NULL default '',
1069   rc_cur_time varchar(14) binary NOT NULL default '',
1070
1071   rc_user int(10) unsigned NOT NULL default '0',
1072   rc_user_text varchar(255) binary NOT NULL default '',
1073
1074   rc_namespace int NOT NULL default '0',
1075   rc_title varchar(255) binary NOT NULL default '',
1076
1077   rc_comment varchar(255) binary NOT NULL default '',
1078   rc_minor tinyint(3) unsigned NOT NULL default '0',
1079
1080   rc_bot tinyint(3) unsigned NOT NULL default '0',
1081   rc_new tinyint(3) unsigned NOT NULL default '0',
1082
1083   rc_cur_id int(10) unsigned NOT NULL default '0',
1084   rc_this_oldid int(10) unsigned NOT NULL default '0',
1085   rc_last_oldid int(10) unsigned NOT NULL default '0',
1086
1087   rc_type tinyint(3) unsigned NOT NULL default '0',
1088   rc_moved_to_ns tinyint(3) unsigned NOT NULL default '0',
1089   rc_moved_to_title varchar(255) binary NOT NULL default '',
1090
1091   rc_patrolled tinyint(3) unsigned NOT NULL default '0',
1092
1093   rc_ip char(15) NOT NULL default '',
1094
1095   PRIMARY KEY rc_id (rc_id),
1096   INDEX rc_timestamp (rc_timestamp),
1097   INDEX rc_namespace_title (rc_namespace, rc_title),
1098   INDEX rc_cur_id (rc_cur_id),
1099   INDEX new_name_timestamp(rc_new,rc_namespace,rc_timestamp),
1100   INDEX rc_ip (rc_ip)
1101
1102 ) TYPE=InnoDB
1103 ENDS;
1104                 $fields = array(
1105                         'rc_id'             => MW_UPGRADE_COPY,
1106                         'rc_timestamp'      => MW_UPGRADE_COPY,
1107                         'rc_cur_time'       => MW_UPGRADE_COPY,
1108                         'rc_user'           => MW_UPGRADE_COPY,
1109                         'rc_user_text'      => MW_UPGRADE_ENCODE,
1110                         'rc_namespace'      => MW_UPGRADE_COPY,
1111                         'rc_title'          => MW_UPGRADE_ENCODE,
1112                         'rc_comment'        => MW_UPGRADE_ENCODE,
1113                         'rc_minor'          => MW_UPGRADE_COPY,
1114                         'rc_bot'            => MW_UPGRADE_COPY,
1115                         'rc_new'            => MW_UPGRADE_COPY,
1116                         'rc_cur_id'         => MW_UPGRADE_COPY,
1117                         'rc_this_oldid'     => MW_UPGRADE_COPY,
1118                         'rc_last_oldid'     => MW_UPGRADE_COPY,
1119                         'rc_type'           => MW_UPGRADE_COPY,
1120                         'rc_moved_to_ns'    => MW_UPGRADE_COPY,
1121                         'rc_moved_to_title' => MW_UPGRADE_ENCODE,
1122                         'rc_patrolled'      => MW_UPGRADE_COPY,
1123                         'rc_ip'             => MW_UPGRADE_COPY );
1124                 $this->copyTable( 'recentchanges', $tabledef, $fields );
1125         }
1126
1127         function upgradeQuerycache() {
1128                 // There's a format change in the namespace field
1129                 $tabledef = <<<ENDS
1130 CREATE TABLE $1 (
1131   -- A key name, generally the base name of of the special page.
1132   qc_type char(32) NOT NULL,
1133
1134   -- Some sort of stored value. Sizes, counts...
1135   qc_value int(5) unsigned NOT NULL default '0',
1136
1137   -- Target namespace+title
1138   qc_namespace int NOT NULL default '0',
1139   qc_title char(255) binary NOT NULL default '',
1140
1141   KEY (qc_type,qc_value)
1142
1143 ) TYPE=InnoDB
1144 ENDS;
1145                 $fields = array(
1146                         'qc_type'      => MW_UPGRADE_COPY,
1147                         'qc_value'     => MW_UPGRADE_COPY,
1148                         'qc_namespace' => MW_UPGRADE_COPY,
1149                         'qc_title'     => MW_UPGRADE_ENCODE );
1150                 $this->copyTable( 'querycache', $tabledef, $fields );
1151         }
1152
1153         /**
1154          * Rename all our temporary tables into final place.
1155          * We've left things in place so a read-only wiki can continue running
1156          * on the old code during all this.
1157          */
1158         function upgradeCleanup() {
1159                 $this->renameTable( 'old', 'text' );
1160
1161                 foreach( $this->cleanupSwaps as $table ) {
1162                         $this->swap( $table );
1163                 }
1164         }
1165
1166         function renameTable( $from, $to ) {
1167                 $this->log( "Renaming $from to $to..." );
1168
1169                 $fromtable = $this->dbw->tableName( $from );
1170                 $totable   = $this->dbw->tableName( $to );
1171                 $this->dbw->query( "ALTER TABLE $fromtable RENAME TO $totable" );
1172         }
1173
1174         function swap( $base ) {
1175                 $this->renameTable( $base, "{$base}_old" );
1176                 $this->renameTable( "{$base}_temp", $base );
1177         }
1178
1179 }