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->loadBalancers = array();
  24                 $this->dbw = wfGetDB( DB_MASTER );
  25                 $this->dbr = $this->streamConnection();
  26
  27                 $this->cleanupSwaps = array();
  28                 $this->emailAuth = false; # don't preauthenticate emails
  29                 $this->maxLag    = 10; # if slaves are lagged more than 10 secs, wait
  30         }
  31
  32         function doing( $step ) {
  33                 return is_null( $this->step ) || $step == $this->step;
  34         }
  35
  36         function upgrade( $step ) {
  37                 $this->step = $step;
  38
  39                 $tables = array(
  40                         'page',
  41                         'links',
  42                         'user',
  43                         'image',
  44                         'oldimage',
  45                         'watchlist',
  46                         'logging',
  47                         'archive',
  48                         'imagelinks',
  49                         'categorylinks',
  50                         'ipblocks',
  51                         'recentchanges',
  52                         'querycache' );
  53                 foreach( $tables as $table ) {
  54                         if( $this->doing( $table ) ) {
  55                                 $method = 'upgrade' . ucfirst( $table );
  56                                 $this->$method();
  57                         }
  58                 }
  59
  60                 if( $this->doing( 'cleanup' ) ) {
  61                         $this->upgradeCleanup();
  62                 }
  63         }
  64
  65
  66         /**
  67          * Open a connection to the master server with the admin rights.
  68          * @return Database
  69          * @access private
  70          */
  71         function newConnection() {
  72                 $lb = wfGetLBFactory()->newMainLB();
  73                 $db = $lb->getConnection( DB_MASTER );
  74
  75                 $this->loadBalancers[] = $lb;
  76                 return $db;
  77         }
  78
  79         /**
  80          * Close out the connections when we're done...
  81          * Is this needed?
  82          */
  83         function close() {
  84                 foreach( $this->loadBalancers as $lb ) {
  85                         $lb->commitMasterChanges();
  86                         $lb->closeAll();
  87                 }
  88         }
  89
  90         /**
  91          * Open a second connection to the master server, with buffering off.
  92          * This will let us stream large datasets in and write in chunks on the
  93          * other end.
  94          * @return Database
  95          * @access private
  96          */
  97         function streamConnection() {
  98                 global $wgDBtype;
  99
 100                 $timeout = 3600 * 24;
 101                 $db =& $this->newConnection();
 102                 $db->bufferResults( false );
 103         if ($wgDBtype == 'mysql') {
 104                         $db->query( "SET net_read_timeout=$timeout" );
 105                         $db->query( "SET net_write_timeout=$timeout" );
 106                 }
 107                 return $db;
 108         }
 109
 110         /**
 111          * Prepare a conversion array for converting Windows Code Page 1252 to
 112          * UTF-8. This should provide proper conversion of text that was miscoded
 113          * as Windows-1252 by naughty user-agents, and doesn't rely on an outside
 114          * iconv library.
 115          *
 116          * @return array
 117          * @access private
 118          */
 119         function prepareWindows1252() {
 120                 # Mappings from:
 121                 # http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT
 122                 static $cp1252 = array(
 123                         0x80 => 0x20AC, #EURO SIGN
 124                         0x81 => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 125                         0x82 => 0x201A, #SINGLE LOW-9 QUOTATION MARK
 126                         0x83 => 0x0192, #LATIN SMALL LETTER F WITH HOOK
 127                         0x84 => 0x201E, #DOUBLE LOW-9 QUOTATION MARK
 128                         0x85 => 0x2026, #HORIZONTAL ELLIPSIS
 129                         0x86 => 0x2020, #DAGGER
 130                         0x87 => 0x2021, #DOUBLE DAGGER
 131                         0x88 => 0x02C6, #MODIFIER LETTER CIRCUMFLEX ACCENT
 132                         0x89 => 0x2030, #PER MILLE SIGN
 133                         0x8A => 0x0160, #LATIN CAPITAL LETTER S WITH CARON
 134                         0x8B => 0x2039, #SINGLE LEFT-POINTING ANGLE QUOTATION MARK
 135                         0x8C => 0x0152, #LATIN CAPITAL LIGATURE OE
 136                         0x8D => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 137                         0x8E => 0x017D, #LATIN CAPITAL LETTER Z WITH CARON
 138                         0x8F => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 139                         0x90 => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 140                         0x91 => 0x2018, #LEFT SINGLE QUOTATION MARK
 141                         0x92 => 0x2019, #RIGHT SINGLE QUOTATION MARK
 142                         0x93 => 0x201C, #LEFT DOUBLE QUOTATION MARK
 143                         0x94 => 0x201D, #RIGHT DOUBLE QUOTATION MARK
 144                         0x95 => 0x2022, #BULLET
 145                         0x96 => 0x2013, #EN DASH
 146                         0x97 => 0x2014, #EM DASH
 147                         0x98 => 0x02DC, #SMALL TILDE
 148                         0x99 => 0x2122, #TRADE MARK SIGN
 149                         0x9A => 0x0161, #LATIN SMALL LETTER S WITH CARON
 150                         0x9B => 0x203A, #SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
 151                         0x9C => 0x0153, #LATIN SMALL LIGATURE OE
 152                         0x9D => 0xFFFD, #REPLACEMENT CHARACTER (no mapping)
 153                         0x9E => 0x017E, #LATIN SMALL LETTER Z WITH CARON
 154                         0x9F => 0x0178, #LATIN CAPITAL LETTER Y WITH DIAERESIS
 155                         );
 156                 $pairs = array();
 157                 for( $i = 0; $i < 0x100; $i++ ) {
 158                         $unicode = isset( $cp1252[$i] ) ? $cp1252[$i] : $i;
 159                         $pairs[chr( $i )] = codepointToUtf8( $unicode );
 160                 }
 161                 return $pairs;
 162         }
 163
 164         /**
 165          * Convert from 8-bit Windows-1252 to UTF-8 if necessary.
 166          * @param string $text
 167          * @return string
 168          * @access private
 169          */
 170         function conv( $text ) {
 171                 global $wgUseLatin1;
 172                 return is_null( $text )
 173                         ? null
 174                         : ( $wgUseLatin1
 175                                 ? strtr( $text, $this->conversionTables )
 176                                 : $text );
 177         }
 178
 179         /**
 180          * Dump timestamp and message to output
 181          * @param string $message
 182          * @access private
 183          */
 184         function log( $message ) {
 185                 echo wfWikiID() . ' ' . wfTimestamp( TS_DB ) . ': ' . $message . "\n";
 186                 flush();
 187         }
 188
 189         /**
 190          * Initialize the chunked-insert system.
 191          * Rows will be inserted in chunks of the given number, rather
 192          * than in a giant INSERT...SELECT query, to keep the serialized
 193          * MySQL database replication from getting hung up. This way other
 194          * things can be going on during conversion without waiting for
 195          * slaves to catch up as badly.
 196          *
 197          * @param int $chunksize Number of rows to insert at once
 198          * @param int $final Total expected number of rows / id of last row,
 199          *                   used for progress reports.
 200          * @param string $table to insert on
 201          * @param string $fname function name to report in SQL
 202          * @access private
 203          */
 204         function setChunkScale( $chunksize, $final, $table, $fname ) {
 205                 $this->chunkSize  = $chunksize;
 206                 $this->chunkFinal = $final;
 207                 $this->chunkCount = 0;
 208                 $this->chunkStartTime = wfTime();
 209                 $this->chunkOptions = array( 'IGNORE' );
 210                 $this->chunkTable = $table;
 211                 $this->chunkFunction = $fname;
 212         }
 213
 214         /**
 215          * Chunked inserts: perform an insert if we've reached the chunk limit.
 216          * Prints a progress report with estimated completion time.
 217          * @param array &$chunk -- This will be emptied if an insert is done.
 218          * @param int $key A key identifier to use in progress estimation in
 219          *                 place of the number of rows inserted. Use this if
 220          *                 you provided a max key number instead of a count
 221          *                 as the final chunk number in setChunkScale()
 222          * @access private
 223          */
 224         function addChunk( &$chunk, $key = null ) {
 225                 if( count( $chunk ) >= $this->chunkSize ) {
 226                         $this->insertChunk( $chunk );
 227
 228                         $this->chunkCount += count( $chunk );
 229                         $now = wfTime();
 230                         $delta = $now - $this->chunkStartTime;
 231                         $rate = $this->chunkCount / $delta;
 232
 233                         if( is_null( $key ) ) {
 234                                 $completed = $this->chunkCount;
 235                         } else {
 236                                 $completed = $key;
 237                         }
 238                         $portion = $completed / $this->chunkFinal;
 239
 240                         $estimatedTotalTime = $delta / $portion;
 241                         $eta = $this->chunkStartTime + $estimatedTotalTime;
 242
 243                         printf( "%s: %6.2f%% done on %s; ETA %s [%d/%d] %.2f/sec\n",
 244                                 wfTimestamp( TS_DB, intval( $now ) ),
 245                                 $portion * 100.0,
 246                                 $this->chunkTable,
 247                                 wfTimestamp( TS_DB, intval( $eta ) ),
 248                                 $completed,
 249                                 $this->chunkFinal,
 250                                 $rate );
 251                         flush();
 252
 253                         $chunk = array();
 254                 }
 255         }
 256
 257         /**
 258          * Chunked inserts: perform an insert unconditionally, at the end, and log.
 259          * @param array &$chunk -- This will be emptied if an insert is done.
 260          * @access private
 261          */
 262         function lastChunk( &$chunk ) {
 263                 $n = count( $chunk );
 264                 if( $n > 0 ) {
 265                         $this->insertChunk( $chunk );
 266                 }
 267                 $this->log( "100.00% done on $this->chunkTable (last chunk $n rows)." );
 268         }
 269
 270         /**
 271          * Chunked inserts: perform an insert.
 272          * @param array &$chunk -- This will be emptied if an insert is done.
 273          * @access private
 274          */
 275         function insertChunk( &$chunk ) {
 276                 // Give slaves a chance to catch up
 277                 wfWaitForSlaves( $this->maxLag );
 278                 $this->dbw->insert( $this->chunkTable, $chunk, $this->chunkFunction, $this->chunkOptions );
 279         }
 280
 281
 282         /**
 283          * Copy and transcode a table to table_temp.
 284          * @param string $name Base name of the source table
 285          * @param string $tabledef CREATE TABLE definition, w/ $1 for the name
 286          * @param array $fields set of destination fields to these constants:
 287          *              MW_UPGRADE_COPY   - straight copy
 288          *              MW_UPGRADE_ENCODE - for old Latin1 wikis, conv to UTF-8
 289          *              MW_UPGRADE_NULL   - just put NULL
 290          * @param callable $callback An optional callback to modify the data
 291          *                           or perform other processing. Func should be
 292          *                           ( object $row, array $copy ) and return $copy
 293          * @access private
 294          */
 295         function copyTable( $name, $tabledef, $fields, $callback = null ) {
 296                 $fname = 'FiveUpgrade::copyTable';
 297
 298                 $name_temp = $name . '_temp';
 299                 $this->log( "Migrating $name table to $name_temp..." );
 300
 301                 $table_temp = $this->dbw->tableName( $name_temp );
 302
 303                 // Create temporary table; we're going to copy everything in there,
 304                 // then at the end rename the final tables into place.
 305                 $def = str_replace( '$1', $table_temp, $tabledef );
 306                 $this->dbw->query( $def, $fname );
 307
 308                 $numRecords = $this->dbw->selectField( $name, 'COUNT(*)', '', $fname );
 309                 $this->setChunkScale( 100, $numRecords, $name_temp, $fname );
 310
 311                 // Pull all records from the second, streaming database connection.
 312                 $sourceFields = array_keys( array_filter( $fields,
 313                         create_function( '$x', 'return $x !== MW_UPGRADE_NULL;' ) ) );
 314                 $result = $this->dbr->select( $name,
 315                         $sourceFields,
 316                         '',
 317                         $fname );
 318
 319                 $add = array();
 320                 while( $row = $this->dbr->fetchObject( $result ) ) {
 321                         $copy = array();
 322                         foreach( $fields as $field => $source ) {
 323                                 if( $source === MW_UPGRADE_COPY ) {
 324                                         $copy[$field] = $row->$field;
 325                                 } elseif( $source === MW_UPGRADE_ENCODE ) {
 326                                         $copy[$field] = $this->conv( $row->$field );
 327                                 } elseif( $source === MW_UPGRADE_NULL ) {
 328                                         $copy[$field] = null;
 329                                 } else {
 330                                         $this->log( "Unknown field copy type: $field => $source" );
 331                                 }
 332                         }
 333                         if( is_callable( $callback ) ) {
 334                                 $copy = call_user_func( $callback, $row, $copy );
 335                         }
 336                         $add[] = $copy;
 337                         $this->addChunk( $add );
 338                 }
 339                 $this->lastChunk( $add );
 340                 $this->dbr->freeResult( $result );
 341
 342                 $this->log( "Done converting $name." );
 343                 $this->cleanupSwaps[] = $name;
 344         }
 345
 346         function upgradePage() {
 347                 $fname = "FiveUpgrade::upgradePage";
 348                 $chunksize = 100;
 349
 350                 if( $this->dbw->tableExists( 'page' ) ) {
 351                         $this->log( 'Page table already exists; aborting.' );
 352                         die( -1 );
 353                 }
 354
 355                 $this->log( "Checking cur table for unique title index and applying if necessary" );
 356                 checkDupes( true );
 357
 358                 $this->log( "...converting from cur/old to page/revision/text DB structure." );
 359
 360                 list ($cur, $old, $page, $revision, $text) = $this->dbw->tableNamesN( 'cur', 'old', 'page', 'revision', 'text' );
 361
 362                 $this->log( "Creating page and revision tables..." );
 363                 $this->dbw->query("CREATE TABLE $page (
 364                         page_id int(8) unsigned NOT NULL auto_increment,
 365                         page_namespace int NOT NULL,
 366                         page_title varchar(255) binary NOT NULL,
 367                         page_restrictions tinyblob NOT NULL default '',
 368                         page_counter bigint(20) unsigned NOT NULL default '0',
 369                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 370                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 371                         page_random real unsigned NOT NULL,
 372                         page_touched char(14) binary NOT NULL default '',
 373                         page_latest int(8) unsigned NOT NULL,
 374                         page_len int(8) unsigned NOT NULL,
 375
 376                         PRIMARY KEY page_id (page_id),
 377                         UNIQUE INDEX name_title (page_namespace,page_title),
 378                         INDEX (page_random),
 379                         INDEX (page_len)
 380                         ) TYPE=InnoDB", $fname );
 381                 $this->dbw->query("CREATE TABLE $revision (
 382                         rev_id int(8) unsigned NOT NULL auto_increment,
 383                         rev_page int(8) unsigned NOT NULL,
 384                         rev_text_id int(8) unsigned NOT NULL,
 385                         rev_comment tinyblob NOT NULL default '',
 386                         rev_user int(5) unsigned NOT NULL default '0',
 387                         rev_user_text varchar(255) binary NOT NULL default '',
 388                         rev_timestamp char(14) binary NOT NULL default '',
 389                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 390                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 391
 392                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 393                         UNIQUE INDEX rev_id (rev_id),
 394                         INDEX rev_timestamp (rev_timestamp),
 395                         INDEX page_timestamp (rev_page,rev_timestamp),
 396                         INDEX user_timestamp (rev_user,rev_timestamp),
 397                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 398                         ) TYPE=InnoDB", $fname );
 399
 400                 $maxold = intval( $this->dbw->selectField( 'old', 'max(old_id)', '', $fname ) );
 401                 $this->log( "Last old record is {$maxold}" );
 402
 403                 global $wgLegacySchemaConversion;
 404                 if( $wgLegacySchemaConversion ) {
 405                         // Create HistoryBlobCurStub entries.
 406                         // Text will be pulled from the leftover 'cur' table at runtime.
 407                         echo "......Moving metadata from cur; using blob references to text in cur table.\n";
 408                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 409                         $cur_flags = "'object'";
 410                 } else {
 411                         // Copy all cur text in immediately: this may take longer but avoids
 412                         // having to keep an extra table around.
 413                         echo "......Moving text from cur.\n";
 414                         $cur_text = 'cur_text';
 415                         $cur_flags = "''";
 416                 }
 417
 418                 $maxcur = $this->dbw->selectField( 'cur', 'max(cur_id)', '', $fname );
 419                 $this->log( "Last cur entry is $maxcur" );
 420
 421                 /**
 422                  * Copy placeholder records for each page's current version into old
 423                  * Don't do any conversion here; text records are converted at runtime
 424                  * based on the flags (and may be originally binary!) while the meta
 425                  * fields will be converted in the old -> rev and cur -> page steps.
 426                  */
 427                 $this->setChunkScale( $chunksize, $maxcur, 'old', $fname );
 428                 $result = $this->dbr->query(
 429                         "SELECT cur_id, cur_namespace, cur_title, $cur_text AS text, cur_comment,
 430                         cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags AS flags
 431                         FROM $cur
 432                         ORDER BY cur_id", $fname );
 433                 $add = array();
 434                 while( $row = $this->dbr->fetchObject( $result ) ) {
 435                         $add[] = array(
 436                                 'old_namespace'  => $row->cur_namespace,
 437                                 'old_title'      => $row->cur_title,
 438                                 'old_text'       => $row->text,
 439                                 'old_comment'    => $row->cur_comment,
 440                                 'old_user'       => $row->cur_user,
 441                                 'old_user_text'  => $row->cur_user_text,
 442                                 'old_timestamp'  => $row->cur_timestamp,
 443                                 'old_minor_edit' => $row->cur_minor_edit,
 444                                 'old_flags'      => $row->flags );
 445                         $this->addChunk( $add, $row->cur_id );
 446                 }
 447                 $this->lastChunk( $add );
 448                 $this->dbr->freeResult( $result );
 449
 450                 /**
 451                  * Copy revision metadata from old into revision.
 452                  * We'll also do UTF-8 conversion of usernames and comments.
 453                  */
 454                 #$newmaxold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 455                 #$this->setChunkScale( $chunksize, $newmaxold, 'revision', $fname );
 456                 #$countold = $this->dbw->selectField( 'old', 'count(old_id)', '', $fname );
 457                 $countold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 458                 $this->setChunkScale( $chunksize, $countold, 'revision', $fname );
 459
 460                 $this->log( "......Setting up revision table." );
 461                 $result = $this->dbr->query(
 462                         "SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 463                         old_timestamp, old_minor_edit
 464                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 465                         $fname );
 466
 467                 $add = array();
 468                 while( $row = $this->dbr->fetchObject( $result ) ) {
 469                         $add[] = array(
 470                                 'rev_id'         =>              $row->old_id,
 471                                 'rev_page'       =>              $row->cur_id,
 472                                 'rev_text_id'    =>              $row->old_id,
 473                                 'rev_comment'    => $this->conv( $row->old_comment ),
 474                                 'rev_user'       =>              $row->old_user,
 475                                 'rev_user_text'  => $this->conv( $row->old_user_text ),
 476                                 'rev_timestamp'  =>              $row->old_timestamp,
 477                                 'rev_minor_edit' =>              $row->old_minor_edit );
 478                         $this->addChunk( $add );
 479                 }
 480                 $this->lastChunk( $add );
 481                 $this->dbr->freeResult( $result );
 482
 483
 484                 /**
 485                  * Copy page metadata from cur into page.
 486                  * We'll also do UTF-8 conversion of titles.
 487                  */
 488                 $this->log( "......Setting up page table." );
 489                 $this->setChunkScale( $chunksize, $maxcur, 'page', $fname );
 490                 $result = $this->dbr->query( "
 491                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 492                                 cur_random, cur_touched, rev_id, LENGTH(cur_text) AS len
 493                         FROM $cur,$revision
 494                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}
 495                         ORDER BY cur_id", $fname );
 496                 $add = array();
 497                 while( $row = $this->dbr->fetchObject( $result ) ) {
 498                         $add[] = array(
 499                                 'page_id'           =>              $row->cur_id,
 500                                 'page_namespace'    =>              $row->cur_namespace,
 501                                 'page_title'        => $this->conv( $row->cur_title ),
 502                                 'page_restrictions' =>              $row->cur_restrictions,
 503                                 'page_counter'      =>              $row->cur_counter,
 504                                 'page_is_redirect'  =>              $row->cur_is_redirect,
 505                                 'page_is_new'       =>              $row->cur_is_new,
 506                                 'page_random'       =>              $row->cur_random,
 507                                 'page_touched'      =>              $this->dbw->timestamp(),
 508                                 'page_latest'       =>              $row->rev_id,
 509                                 'page_len'          =>              $row->len );
 510                         #$this->addChunk( $add, $row->cur_id );
 511                         $this->addChunk( $add );
 512                 }
 513                 $this->lastChunk( $add );
 514                 $this->dbr->freeResult( $result );
 515
 516                 $this->log( "...done with cur/old -> page/revision." );
 517         }
 518
 519         function upgradeLinks() {
 520                 $fname = 'FiveUpgrade::upgradeLinks';
 521                 $chunksize = 200;
 522                 list ($links, $brokenlinks, $pagelinks, $cur) = $this->dbw->tableNamesN( 'links', 'brokenlinks', 'pagelinks', 'cur' );
 523
 524                 $this->log( 'Checking for interwiki table change in case of bogus items...' );
 525                 if( $this->dbw->fieldExists( 'interwiki', 'iw_trans' ) ) {
 526                         $this->log( 'interwiki has iw_trans.' );
 527                 } else {
 528                         global $IP;
 529                         $this->log( 'adding iw_trans...' );
 530                         dbsource( $IP . '/maintenance/archives/patch-interwiki-trans.sql', $this->dbw );
 531                         $this->log( 'added iw_trans.' );
 532                 }
 533
 534                 $this->log( 'Creating pagelinks table...' );
 535                 $this->dbw->query( "
 536 CREATE TABLE $pagelinks (
 537   -- Key to the page_id of the page containing the link.
 538   pl_from int(8) unsigned NOT NULL default '0',
 539
 540   -- Key to page_namespace/page_title of the target page.
 541   -- The target page may or may not exist, and due to renames
 542   -- and deletions may refer to different page records as time
 543   -- goes by.
 544   pl_namespace int NOT NULL default '0',
 545   pl_title varchar(255) binary NOT NULL default '',
 546
 547   UNIQUE KEY pl_from(pl_from,pl_namespace,pl_title),
 548   KEY (pl_namespace,pl_title)
 549
 550 ) TYPE=InnoDB" );
 551
 552                 $this->log( 'Importing live links -> pagelinks' );
 553                 $nlinks = $this->dbw->selectField( 'links', 'count(*)', '', $fname );
 554                 if( $nlinks ) {
 555                         $this->setChunkScale( $chunksize, $nlinks, 'pagelinks', $fname );
 556                         $result = $this->dbr->query( "
 557                           SELECT l_from,cur_namespace,cur_title
 558                                 FROM $links, $cur
 559                                 WHERE l_to=cur_id", $fname );
 560                         $add = array();
 561                         while( $row = $this->dbr->fetchObject( $result ) ) {
 562                                 $add[] = array(
 563                                         'pl_from'      =>              $row->l_from,
 564                                         'pl_namespace' =>              $row->cur_namespace,
 565                                         'pl_title'     => $this->conv( $row->cur_title ) );
 566                                 $this->addChunk( $add );
 567                         }
 568                         $this->lastChunk( $add );
 569                 } else {
 570                         $this->log( 'no links!' );
 571                 }
 572
 573                 $this->log( 'Importing brokenlinks -> pagelinks' );
 574                 $nbrokenlinks = $this->dbw->selectField( 'brokenlinks', 'count(*)', '', $fname );
 575                 if( $nbrokenlinks ) {
 576                         $this->setChunkScale( $chunksize, $nbrokenlinks, 'pagelinks', $fname );
 577                         $result = $this->dbr->query(
 578                                 "SELECT bl_from, bl_to FROM $brokenlinks",
 579                                 $fname );
 580                         $add = array();
 581                         while( $row = $this->dbr->fetchObject( $result ) ) {
 582                                 $pagename = $this->conv( $row->bl_to );
 583                                 $title = Title::newFromText( $pagename );
 584                                 if( is_null( $title ) ) {
 585                                         $this->log( "** invalid brokenlink: $row->bl_from -> '$pagename' (converted from '$row->bl_to')" );
 586                                 } else {
 587                                         $add[] = array(
 588                                                 'pl_from'      => $row->bl_from,
 589                                                 'pl_namespace' => $title->getNamespace(),
 590                                                 'pl_title'     => $title->getDBkey() );
 591                                         $this->addChunk( $add );
 592                                 }
 593                         }
 594                         $this->lastChunk( $add );
 595                 } else {
 596                         $this->log( 'no brokenlinks!' );
 597                 }
 598
 599                 $this->log( 'Done with links.' );
 600         }
 601
 602         function upgradeUser() {
 603                 // Apply unique index, if necessary:
 604                 $duper = new UserDupes( $this->dbw );
 605                 if( $duper->hasUniqueIndex() ) {
 606                         $this->log( "Already have unique user_name index." );
 607                 } else {
 608                         $this->log( "Clearing user duplicates..." );
 609                         if( !$duper->clearDupes() ) {
 610                                 $this->log( "WARNING: Duplicate user accounts, may explode!" );
 611                         }
 612                 }
 613
 614                 $tabledef = <<<END
 615 CREATE TABLE $1 (
 616   user_id int(5) unsigned NOT NULL auto_increment,
 617   user_name varchar(255) binary NOT NULL default '',
 618   user_real_name varchar(255) binary NOT NULL default '',
 619   user_password tinyblob NOT NULL default '',
 620   user_newpassword tinyblob NOT NULL default '',
 621   user_email tinytext NOT NULL default '',
 622   user_options blob NOT NULL default '',
 623   user_touched char(14) binary NOT NULL default '',
 624   user_token char(32) binary NOT NULL default '',
 625   user_email_authenticated CHAR(14) BINARY,
 626   user_email_token CHAR(32) BINARY,
 627   user_email_token_expires CHAR(14) BINARY,
 628
 629   PRIMARY KEY user_id (user_id),
 630   UNIQUE INDEX user_name (user_name),
 631   INDEX (user_email_token)
 632
 633 ) TYPE=InnoDB
 634 END;
 635                 $fields = array(
 636                         'user_id'                  => MW_UPGRADE_COPY,
 637                         'user_name'                => MW_UPGRADE_ENCODE,
 638                         'user_real_name'           => MW_UPGRADE_ENCODE,
 639                         'user_password'            => MW_UPGRADE_COPY,
 640                         'user_newpassword'         => MW_UPGRADE_COPY,
 641                         'user_email'               => MW_UPGRADE_ENCODE,
 642                         'user_options'             => MW_UPGRADE_ENCODE,
 643                         'user_touched'             => MW_UPGRADE_CALLBACK,
 644                         'user_token'               => MW_UPGRADE_COPY,
 645                         'user_email_authenticated' => MW_UPGRADE_CALLBACK,
 646                         'user_email_token'         => MW_UPGRADE_NULL,
 647                         'user_email_token_expires' => MW_UPGRADE_NULL );
 648                 $this->copyTable( 'user', $tabledef, $fields,
 649                         array( &$this, 'userCallback' ) );
 650         }
 651
 652         function userCallback( $row, $copy ) {
 653                 $now = $this->dbw->timestamp();
 654                 $copy['user_touched'] = $now;
 655                 $copy['user_email_authenticated'] = $this->emailAuth ? $now : null;
 656                 return $copy;
 657         }
 658
 659         function upgradeImage() {
 660                 $tabledef = <<<END
 661 CREATE TABLE $1 (
 662   img_name varchar(255) binary NOT NULL default '',
 663   img_size int(8) unsigned NOT NULL default '0',
 664   img_width int(5)  NOT NULL default '0',
 665   img_height int(5)  NOT NULL default '0',
 666   img_metadata mediumblob NOT NULL,
 667   img_bits int(3)  NOT NULL default '0',
 668   img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 669   img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart") NOT NULL default "unknown",
 670   img_minor_mime varchar(32) NOT NULL default "unknown",
 671   img_description tinyblob NOT NULL default '',
 672   img_user int(5) unsigned NOT NULL default '0',
 673   img_user_text varchar(255) binary NOT NULL default '',
 674   img_timestamp char(14) binary NOT NULL default '',
 675
 676   PRIMARY KEY img_name (img_name),
 677   INDEX img_size (img_size),
 678   INDEX img_timestamp (img_timestamp)
 679 ) TYPE=InnoDB
 680 END;
 681                 $fields = array(
 682                         'img_name'        => MW_UPGRADE_ENCODE,
 683                         'img_size'        => MW_UPGRADE_COPY,
 684                         'img_width'       => MW_UPGRADE_CALLBACK,
 685                         'img_height'      => MW_UPGRADE_CALLBACK,
 686                         'img_metadata'    => MW_UPGRADE_CALLBACK,
 687                         'img_bits'        => MW_UPGRADE_CALLBACK,
 688                         'img_media_type'  => MW_UPGRADE_CALLBACK,
 689                         'img_major_mime'  => MW_UPGRADE_CALLBACK,
 690                         'img_minor_mime'  => MW_UPGRADE_CALLBACK,
 691                         'img_description' => MW_UPGRADE_ENCODE,
 692                         'img_user'        => MW_UPGRADE_COPY,
 693                         'img_user_text'   => MW_UPGRADE_ENCODE,
 694                         'img_timestamp'   => MW_UPGRADE_COPY );
 695                 $this->copyTable( 'image', $tabledef, $fields,
 696                         array( &$this, 'imageCallback' ) );
 697         }
 698
 699         function imageCallback( $row, $copy ) {
 700                 global $options;
 701                 if( !isset( $options['noimage'] ) ) {
 702                         // Fill in the new image info fields
 703                         $info = $this->imageInfo( $row->img_name );
 704
 705                         $copy['img_width'     ] = $info['width'];
 706                         $copy['img_height'    ] = $info['height'];
 707                         $copy['img_metadata'  ] = ""; // loaded on-demand
 708                         $copy['img_bits'      ] = $info['bits'];
 709                         $copy['img_media_type'] = $info['media'];
 710                         $copy['img_major_mime'] = $info['major'];
 711                         $copy['img_minor_mime'] = $info['minor'];
 712                 }
 713
 714                 // If doing UTF8 conversion the file must be renamed
 715                 $this->renameFile( $row->img_name, 'wfImageDir' );
 716
 717                 return $copy;
 718         }
 719
 720         function imageInfo( $filename ) {
 721                 $info = array(
 722                         'width'  => 0,
 723                         'height' => 0,
 724                         'bits'   => 0,
 725                         'media'  => '',
 726                         'major'  => '',
 727                         'minor'  => '' );
 728
 729                 $magic = MimeMagic::singleton();
 730                 $mime = $magic->guessMimeType( $filename, true );
 731                 list( $info['major'], $info['minor'] ) = explode( '/', $mime );
 732
 733                 $info['media'] = $magic->getMediaType( $filename, $mime );
 734
 735                 $image = UnregisteredLocalFile::newFromPath( $filename, $mime );
 736
 737                 $info['width'] = $image->getWidth();
 738                 $info['height'] = $image->getHeight();
 739
 740                 $gis = $image->getImageSize();
 741                 if ( isset( $gis['bits'] ) ) {
 742                         $info['bits'] = $gis['bits'];
 743                 }
 744
 745                 return $info;
 746         }
 747
 748
 749         /**
 750          * Truncate a table.
 751          * @param string $table The table name to be truncated
 752          */
 753         function clearTable( $table ) {
 754                 print "Clearing $table...\n";
 755                 $tableName = $this->db->tableName( $table );
 756                 $this->db->query( "TRUNCATE $tableName" );
 757         }
 758
 759         /**
 760          * Rename a given image or archived image file to the converted filename,
 761          * leaving a symlink for URL compatibility.
 762          *
 763          * @param string $oldname pre-conversion filename
 764          * @param string $basename pre-conversion base filename for dir hashing, if an archive
 765          * @access private
 766          */
 767         function renameFile( $oldname, $subdirCallback='wfImageDir', $basename=null ) {
 768                 $newname = $this->conv( $oldname );
 769                 if( $newname == $oldname ) {
 770                         // No need to rename; another field triggered this row.
 771                         return false;
 772                 }
 773
 774                 if( is_null( $basename ) ) $basename = $oldname;
 775                 $ubasename = $this->conv( $basename );
 776                 $oldpath = call_user_func( $subdirCallback, $basename ) . '/' . $oldname;
 777                 $newpath = call_user_func( $subdirCallback, $ubasename ) . '/' . $newname;
 778
 779                 $this->log( "$oldpath -> $newpath" );
 780                 if( rename( $oldpath, $newpath ) ) {
 781                         $relpath = wfRelativePath( $newpath, dirname( $oldpath ) );
 782                         if( !symlink( $relpath, $oldpath ) ) {
 783                                 $this->log( "... symlink failed!" );
 784                         }
 785                         return $newname;
 786                 } else {
 787                         $this->log( "... rename failed!" );
 788                         return false;
 789                 }
 790         }
 791
 792         function upgradeOldImage() {
 793                 $tabledef = <<<END
 794 CREATE TABLE $1 (
 795   -- Base filename: key to image.img_name
 796   oi_name varchar(255) binary NOT NULL default '',
 797
 798   -- Filename of the archived file.
 799   -- This is generally a timestamp and '!' prepended to the base name.
 800   oi_archive_name varchar(255) binary NOT NULL default '',
 801
 802   -- Other fields as in image...
 803   oi_size int(8) unsigned NOT NULL default 0,
 804   oi_width int(5) NOT NULL default 0,
 805   oi_height int(5) NOT NULL default 0,
 806   oi_bits int(3) NOT NULL default 0,
 807   oi_description tinyblob NOT NULL default '',
 808   oi_user int(5) unsigned NOT NULL default '0',
 809   oi_user_text varchar(255) binary NOT NULL default '',
 810   oi_timestamp char(14) binary NOT NULL default '',
 811
 812   INDEX oi_name (oi_name(10))
 813
 814 ) TYPE=InnoDB;
 815 END;
 816                 $fields = array(
 817                         'oi_name'         => MW_UPGRADE_ENCODE,
 818                         'oi_archive_name' => MW_UPGRADE_ENCODE,
 819                         'oi_size'         => MW_UPGRADE_COPY,
 820                         'oi_width'        => MW_UPGRADE_CALLBACK,
 821                         'oi_height'       => MW_UPGRADE_CALLBACK,
 822                         'oi_bits'         => MW_UPGRADE_CALLBACK,
 823                         'oi_description'  => MW_UPGRADE_ENCODE,
 824                         'oi_user'         => MW_UPGRADE_COPY,
 825                         'oi_user_text'    => MW_UPGRADE_ENCODE,
 826                         'oi_timestamp'    => MW_UPGRADE_COPY );
 827                 $this->copyTable( 'oldimage', $tabledef, $fields,
 828                         array( &$this, 'oldimageCallback' ) );
 829         }
 830
 831         function oldimageCallback( $row, $copy ) {
 832                 global $options;
 833                 if( !isset( $options['noimage'] ) ) {
 834                         // Fill in the new image info fields
 835                         $info = $this->imageInfo( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 836                         $copy['oi_width' ] = $info['width' ];
 837                         $copy['oi_height'] = $info['height'];
 838                         $copy['oi_bits'  ] = $info['bits'  ];
 839                 }
 840
 841                 // If doing UTF8 conversion the file must be renamed
 842                 $this->renameFile( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 843
 844                 return $copy;
 845         }
 846
 847
 848         function upgradeWatchlist() {
 849                 $fname = 'FiveUpgrade::upgradeWatchlist';
 850                 $chunksize = 100;
 851
 852                 list ($watchlist, $watchlist_temp) = $this->dbw->tableNamesN( 'watchlist', 'watchlist_temp' );
 853
 854                 $this->log( 'Migrating watchlist table to watchlist_temp...' );
 855                 $this->dbw->query(
 856 "CREATE TABLE $watchlist_temp (
 857   -- Key to user_id
 858   wl_user int(5) unsigned NOT NULL,
 859
 860   -- Key to page_namespace/page_title
 861   -- Note that users may watch patches which do not exist yet,
 862   -- or existed in the past but have been deleted.
 863   wl_namespace int NOT NULL default '0',
 864   wl_title varchar(255) binary NOT NULL default '',
 865
 866   -- Timestamp when user was last sent a notification e-mail;
 867   -- cleared when the user visits the page.
 868   -- FIXME: add proper null support etc
 869   wl_notificationtimestamp varchar(14) binary NOT NULL default '0',
 870
 871   UNIQUE KEY (wl_user, wl_namespace, wl_title),
 872   KEY namespace_title (wl_namespace,wl_title)
 873
 874 ) TYPE=InnoDB;", $fname );
 875
 876                 // Fix encoding for Latin-1 upgrades, add some fields,
 877                 // and double article to article+talk pairs
 878                 $numwatched = $this->dbw->selectField( 'watchlist', 'count(*)', '', $fname );
 879
 880                 $this->setChunkScale( $chunksize, $numwatched * 2, 'watchlist_temp', $fname );
 881                 $result = $this->dbr->select( 'watchlist',
 882                         array(
 883                                 'wl_user',
 884                                 'wl_namespace',
 885                                 'wl_title' ),
 886                         '',
 887                         $fname );
 888
 889                 $add = array();
 890                 while( $row = $this->dbr->fetchObject( $result ) ) {
 891                         $add[] = array(
 892                                 'wl_user'      =>                        $row->wl_user,
 893                                 'wl_namespace' => Namespace::getSubject( $row->wl_namespace ),
 894                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 895                                 'wl_notificationtimestamp' =>            '0' );
 896                         $this->addChunk( $add );
 897
 898                         $add[] = array(
 899                                 'wl_user'      =>                        $row->wl_user,
 900                                 'wl_namespace' =>    Namespace::getTalk( $row->wl_namespace ),
 901                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 902                                 'wl_notificationtimestamp' =>            '0' );
 903                         $this->addChunk( $add );
 904                 }
 905                 $this->lastChunk( $add );
 906                 $this->dbr->freeResult( $result );
 907
 908                 $this->log( 'Done converting watchlist.' );
 909                 $this->cleanupSwaps[] = 'watchlist';
 910         }
 911
 912         function upgradeLogging() {
 913                 $tabledef = <<<ENDS
 914 CREATE TABLE $1 (
 915   -- Symbolic keys for the general log type and the action type
 916   -- within the log. The output format will be controlled by the
 917   -- action field, but only the type controls categorization.
 918   log_type char(10) NOT NULL default '',
 919   log_action char(10) NOT NULL default '',
 920
 921   -- Timestamp. Duh.
 922   log_timestamp char(14) NOT NULL default '19700101000000',
 923
 924   -- The user who performed this action; key to user_id
 925   log_user int unsigned NOT NULL default 0,
 926
 927   -- Key to the page affected. Where a user is the target,
 928   -- this will point to the user page.
 929   log_namespace int NOT NULL default 0,
 930   log_title varchar(255) binary NOT NULL default '',
 931
 932   -- Freeform text. Interpreted as edit history comments.
 933   log_comment varchar(255) NOT NULL default '',
 934
 935   -- LF separated list of miscellaneous parameters
 936   log_params blob NOT NULL default '',
 937
 938   KEY type_time (log_type, log_timestamp),
 939   KEY user_time (log_user, log_timestamp),
 940   KEY page_time (log_namespace, log_title, log_timestamp)
 941
 942 ) TYPE=InnoDB
 943 ENDS;
 944                 $fields = array(
 945                         'log_type'      => MW_UPGRADE_COPY,
 946                         'log_action'    => MW_UPGRADE_COPY,
 947                         'log_timestamp' => MW_UPGRADE_COPY,
 948                         'log_user'      => MW_UPGRADE_COPY,
 949                         'log_namespace' => MW_UPGRADE_COPY,
 950                         'log_title'     => MW_UPGRADE_ENCODE,
 951                         'log_comment'   => MW_UPGRADE_ENCODE,
 952                         'log_params'    => MW_UPGRADE_ENCODE );
 953                 $this->copyTable( 'logging', $tabledef, $fields );
 954         }
 955
 956         function upgradeArchive() {
 957                 $tabledef = <<<ENDS
 958 CREATE TABLE $1 (
 959   ar_namespace int NOT NULL default '0',
 960   ar_title varchar(255) binary NOT NULL default '',
 961   ar_text mediumblob NOT NULL default '',
 962
 963   ar_comment tinyblob NOT NULL default '',
 964   ar_user int(5) unsigned NOT NULL default '0',
 965   ar_user_text varchar(255) binary NOT NULL,
 966   ar_timestamp char(14) binary NOT NULL default '',
 967   ar_minor_edit tinyint(1) NOT NULL default '0',
 968
 969   ar_flags tinyblob NOT NULL default '',
 970
 971   ar_rev_id int(8) unsigned,
 972   ar_text_id int(8) unsigned,
 973
 974   KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp)
 975
 976 ) TYPE=InnoDB
 977 ENDS;
 978                 $fields = array(
 979                         'ar_namespace'  => MW_UPGRADE_COPY,
 980                         'ar_title'      => MW_UPGRADE_ENCODE,
 981                         'ar_text'       => MW_UPGRADE_COPY,
 982                         'ar_comment'    => MW_UPGRADE_ENCODE,
 983                         'ar_user'       => MW_UPGRADE_COPY,
 984                         'ar_user_text'  => MW_UPGRADE_ENCODE,
 985                         'ar_timestamp'  => MW_UPGRADE_COPY,
 986                         'ar_minor_edit' => MW_UPGRADE_COPY,
 987                         'ar_flags'      => MW_UPGRADE_COPY,
 988                         'ar_rev_id'     => MW_UPGRADE_NULL,
 989                         'ar_text_id'    => MW_UPGRADE_NULL );
 990                 $this->copyTable( 'archive', $tabledef, $fields );
 991         }
 992
 993         function upgradeImagelinks() {
 994                 global $wgUseLatin1;
 995                 if( $wgUseLatin1 ) {
 996                         $tabledef = <<<ENDS
 997 CREATE TABLE $1 (
 998   -- Key to page_id of the page containing the image / media link.
 999   il_from int(8) unsigned NOT NULL default '0',
1000
1001   -- Filename of target image.
1002   -- This is also the page_title of the file's description page;
1003   -- all such pages are in namespace 6 (NS_FILE).
1004   il_to varchar(255) binary NOT NULL default '',
1005
1006   UNIQUE KEY il_from(il_from,il_to),
1007   KEY (il_to)
1008
1009 ) TYPE=InnoDB
1010 ENDS;
1011                         $fields = array(
1012                                 'il_from' => MW_UPGRADE_COPY,
1013                                 'il_to'   => MW_UPGRADE_ENCODE );
1014                         $this->copyTable( 'imagelinks', $tabledef, $fields );
1015                 }
1016         }
1017
1018         function upgradeCategorylinks() {
1019                 global $wgUseLatin1;
1020                 if( $wgUseLatin1 ) {
1021                         $tabledef = <<<ENDS
1022 CREATE TABLE $1 (
1023   cl_from int(8) unsigned NOT NULL default '0',
1024   cl_to varchar(255) binary NOT NULL default '',
1025   cl_sortkey varchar(86) binary NOT NULL default '',
1026   cl_timestamp timestamp NOT NULL,
1027
1028   UNIQUE KEY cl_from(cl_from,cl_to),
1029   KEY cl_sortkey(cl_to,cl_sortkey),
1030   KEY cl_timestamp(cl_to,cl_timestamp)
1031 ) TYPE=InnoDB
1032 ENDS;
1033                         $fields = array(
1034                                 'cl_from'      => MW_UPGRADE_COPY,
1035                                 'cl_to'        => MW_UPGRADE_ENCODE,
1036                                 'cl_sortkey'   => MW_UPGRADE_ENCODE,
1037                                 'cl_timestamp' => MW_UPGRADE_COPY );
1038                         $this->copyTable( 'categorylinks', $tabledef, $fields );
1039                 }
1040         }
1041
1042         function upgradeIpblocks() {
1043                 global $wgUseLatin1;
1044                 if( $wgUseLatin1 ) {
1045                         $tabledef = <<<ENDS
1046 CREATE TABLE $1 (
1047   ipb_id int(8) NOT NULL auto_increment,
1048   ipb_address varchar(40) binary NOT NULL default '',
1049   ipb_user int(8) unsigned NOT NULL default '0',
1050   ipb_by int(8) unsigned NOT NULL default '0',
1051   ipb_reason tinyblob NOT NULL default '',
1052   ipb_timestamp char(14) binary NOT NULL default '',
1053   ipb_auto tinyint(1) NOT NULL default '0',
1054   ipb_expiry char(14) binary NOT NULL default '',
1055
1056   PRIMARY KEY ipb_id (ipb_id),
1057   INDEX ipb_address (ipb_address),
1058   INDEX ipb_user (ipb_user)
1059
1060 ) TYPE=InnoDB
1061 ENDS;
1062                         $fields = array(
1063                                 'ipb_id'        => MW_UPGRADE_COPY,
1064                                 'ipb_address'   => MW_UPGRADE_COPY,
1065                                 'ipb_user'      => MW_UPGRADE_COPY,
1066                                 'ipb_by'        => MW_UPGRADE_COPY,
1067                                 'ipb_reason'    => MW_UPGRADE_ENCODE,
1068                                 'ipb_timestamp' => MW_UPGRADE_COPY,
1069                                 'ipb_auto'      => MW_UPGRADE_COPY,
1070                                 'ipb_expiry'    => MW_UPGRADE_COPY );
1071                         $this->copyTable( 'ipblocks', $tabledef, $fields );
1072                 }
1073         }
1074
1075         function upgradeRecentchanges() {
1076                 // There's a format change in the namespace field
1077                 $tabledef = <<<ENDS
1078 CREATE TABLE $1 (
1079   rc_id int(8) NOT NULL auto_increment,
1080   rc_timestamp varchar(14) binary NOT NULL default '',
1081   rc_cur_time varchar(14) binary NOT NULL default '',
1082
1083   rc_user int(10) unsigned NOT NULL default '0',
1084   rc_user_text varchar(255) binary NOT NULL default '',
1085
1086   rc_namespace int NOT NULL default '0',
1087   rc_title varchar(255) binary NOT NULL default '',
1088
1089   rc_comment varchar(255) binary NOT NULL default '',
1090   rc_minor tinyint(3) unsigned NOT NULL default '0',
1091
1092   rc_bot tinyint(3) unsigned NOT NULL default '0',
1093   rc_new tinyint(3) unsigned NOT NULL default '0',
1094
1095   rc_cur_id int(10) unsigned NOT NULL default '0',
1096   rc_this_oldid int(10) unsigned NOT NULL default '0',
1097   rc_last_oldid int(10) unsigned NOT NULL default '0',
1098
1099   rc_type tinyint(3) unsigned NOT NULL default '0',
1100   rc_moved_to_ns tinyint(3) unsigned NOT NULL default '0',
1101   rc_moved_to_title varchar(255) binary NOT NULL default '',
1102
1103   rc_patrolled tinyint(3) unsigned NOT NULL default '0',
1104
1105   rc_ip char(15) NOT NULL default '',
1106
1107   PRIMARY KEY rc_id (rc_id),
1108   INDEX rc_timestamp (rc_timestamp),
1109   INDEX rc_namespace_title (rc_namespace, rc_title),
1110   INDEX rc_cur_id (rc_cur_id),
1111   INDEX new_name_timestamp(rc_new,rc_namespace,rc_timestamp),
1112   INDEX rc_ip (rc_ip)
1113
1114 ) TYPE=InnoDB
1115 ENDS;
1116                 $fields = array(
1117                         'rc_id'             => MW_UPGRADE_COPY,
1118                         'rc_timestamp'      => MW_UPGRADE_COPY,
1119                         'rc_cur_time'       => MW_UPGRADE_COPY,
1120                         'rc_user'           => MW_UPGRADE_COPY,
1121                         'rc_user_text'      => MW_UPGRADE_ENCODE,
1122                         'rc_namespace'      => MW_UPGRADE_COPY,
1123                         'rc_title'          => MW_UPGRADE_ENCODE,
1124                         'rc_comment'        => MW_UPGRADE_ENCODE,
1125                         'rc_minor'          => MW_UPGRADE_COPY,
1126                         'rc_bot'            => MW_UPGRADE_COPY,
1127                         'rc_new'            => MW_UPGRADE_COPY,
1128                         'rc_cur_id'         => MW_UPGRADE_COPY,
1129                         'rc_this_oldid'     => MW_UPGRADE_COPY,
1130                         'rc_last_oldid'     => MW_UPGRADE_COPY,
1131                         'rc_type'           => MW_UPGRADE_COPY,
1132                         'rc_moved_to_ns'    => MW_UPGRADE_COPY,
1133                         'rc_moved_to_title' => MW_UPGRADE_ENCODE,
1134                         'rc_patrolled'      => MW_UPGRADE_COPY,
1135                         'rc_ip'             => MW_UPGRADE_COPY );
1136                 $this->copyTable( 'recentchanges', $tabledef, $fields );
1137         }
1138
1139         function upgradeQuerycache() {
1140                 // There's a format change in the namespace field
1141                 $tabledef = <<<ENDS
1142 CREATE TABLE $1 (
1143   -- A key name, generally the base name of of the special page.
1144   qc_type char(32) NOT NULL,
1145
1146   -- Some sort of stored value. Sizes, counts...
1147   qc_value int(5) unsigned NOT NULL default '0',
1148
1149   -- Target namespace+title
1150   qc_namespace int NOT NULL default '0',
1151   qc_title char(255) binary NOT NULL default '',
1152
1153   KEY (qc_type,qc_value)
1154
1155 ) TYPE=InnoDB
1156 ENDS;
1157                 $fields = array(
1158                         'qc_type'      => MW_UPGRADE_COPY,
1159                         'qc_value'     => MW_UPGRADE_COPY,
1160                         'qc_namespace' => MW_UPGRADE_COPY,
1161                         'qc_title'     => MW_UPGRADE_ENCODE );
1162                 $this->copyTable( 'querycache', $tabledef, $fields );
1163         }
1164
1165         /**
1166          * Rename all our temporary tables into final place.
1167          * We've left things in place so a read-only wiki can continue running
1168          * on the old code during all this.
1169          */
1170         function upgradeCleanup() {
1171                 $this->renameTable( 'old', 'text' );
1172
1173                 foreach( $this->cleanupSwaps as $table ) {
1174                         $this->swap( $table );
1175                 }
1176         }
1177
1178         function renameTable( $from, $to ) {
1179                 $this->log( "Renaming $from to $to..." );
1180
1181                 $fromtable = $this->dbw->tableName( $from );
1182                 $totable   = $this->dbw->tableName( $to );
1183                 $this->dbw->query( "ALTER TABLE $fromtable RENAME TO $totable" );
1184         }
1185
1186         function swap( $base ) {
1187                 $this->renameTable( $base, "{$base}_old" );
1188                 $this->renameTable( "{$base}_temp", $base );
1189         }
1190
1191 }