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