maintenance/FiveUpgrade.inc

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