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                 global $wgDatabase;
  15                 $this->conversionTables = $this->prepareWindows1252();
  16
  17                 $this->dbw =& $this->newConnection();
  18                 $this->dbr =& $this->streamConnection();
  19
  20                 $this->cleanupSwaps = array();
  21                 $this->emailAuth = false; # don't preauthenticate emails
  22                 $this->maxLag    = 10; # if slaves are lagged more than 10 secs, wait
  23         }
  24
  25         function doing( $step ) {
  26                 return is_null( $this->step ) || $step == $this->step;
  27         }
  28
  29         function upgrade( $step ) {
  30                 $this->step = $step;
  31
  32                 $tables = array(
  33                         'page',
  34                         'links',
  35                         'user',
  36                         'image',
  37                         'oldimage',
  38                         'watchlist',
  39                         'logging',
  40                         'archive',
  41                         'imagelinks',
  42                         'categorylinks',
  43                         'ipblocks',
  44                         'recentchanges',
  45                         'querycache' );
  46                 foreach( $tables as $table ) {
  47                         if( $this->doing( $table ) ) {
  48                                 $method = 'upgrade' . ucfirst( $table );
  49                                 $this->$method();
  50                         }
  51                 }
  52
  53                 if( $this->doing( 'cleanup' ) ) {
  54                         $this->upgradeCleanup();
  55                 }
  56         }
  57
  58
  59         /**
  60          * Open a connection to the master server with the admin rights.
  61          * @return Database
  62          * @access private
  63          */
  64         function &newConnection() {
  65                 global $wgDBadminuser, $wgDBadminpassword;
  66                 global $wgDBserver, $wgDBname;
  67                 $db =& new Database( $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                 $timeout = 3600 * 24;
  80                 $db =& $this->newConnection();
  81                 $db->bufferResults( false );
  82                 $db->query( "SET net_read_timeout=$timeout" );
  83                 $db->query( "SET net_write_timeout=$timeout" );
  84                 return $db;
  85         }
  86
  87         /**
  88          * Prepare a conversion array for converting Windows Code Page 1252 to
  89          * UTF-8. This should provide proper conversion of text that was miscoded
  90          * as Windows-1252 by naughty user-agents, and doesn't rely on an outside
  91          * iconv library.
  92          *
  93          * @return array
  94          * @access private
  95          */
  96         function prepareWindows1252() {
  97                 # Mappings from:
  98                 # http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT
  99                 static $cp1252 = array(
 100                         0x80 => 0x20AC, #EURO SIGN
 101                         0x81 => UNICODE_REPLACEMENT,
 102                         0x82 => 0x201A, #SINGLE LOW-9 QUOTATION MARK
 103                         0x83 => 0x0192, #LATIN SMALL LETTER F WITH HOOK
 104                         0x84 => 0x201E, #DOUBLE LOW-9 QUOTATION MARK
 105                         0x85 => 0x2026, #HORIZONTAL ELLIPSIS
 106                         0x86 => 0x2020, #DAGGER
 107                         0x87 => 0x2021, #DOUBLE DAGGER
 108                         0x88 => 0x02C6, #MODIFIER LETTER CIRCUMFLEX ACCENT
 109                         0x89 => 0x2030, #PER MILLE SIGN
 110                         0x8A => 0x0160, #LATIN CAPITAL LETTER S WITH CARON
 111                         0x8B => 0x2039, #SINGLE LEFT-POINTING ANGLE QUOTATION MARK
 112                         0x8C => 0x0152, #LATIN CAPITAL LIGATURE OE
 113                         0x8D => UNICODE_REPLACEMENT,
 114                         0x8E => 0x017D, #LATIN CAPITAL LETTER Z WITH CARON
 115                         0x8F => UNICODE_REPLACEMENT,
 116                         0x90 => UNICODE_REPLACEMENT,
 117                         0x91 => 0x2018, #LEFT SINGLE QUOTATION MARK
 118                         0x92 => 0x2019, #RIGHT SINGLE QUOTATION MARK
 119                         0x93 => 0x201C, #LEFT DOUBLE QUOTATION MARK
 120                         0x94 => 0x201D, #RIGHT DOUBLE QUOTATION MARK
 121                         0x95 => 0x2022, #BULLET
 122                         0x96 => 0x2013, #EN DASH
 123                         0x97 => 0x2014, #EM DASH
 124                         0x98 => 0x02DC, #SMALL TILDE
 125                         0x99 => 0x2122, #TRADE MARK SIGN
 126                         0x9A => 0x0161, #LATIN SMALL LETTER S WITH CARON
 127                         0x9B => 0x203A, #SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
 128                         0x9C => 0x0153, #LATIN SMALL LIGATURE OE
 129                         0x9D => UNICODE_REPLACEMENT,
 130                         0x9E => 0x017E, #LATIN SMALL LETTER Z WITH CARON
 131                         0x9F => 0x0178, #LATIN CAPITAL LETTER Y WITH DIAERESIS
 132                         );
 133                 $pairs = array();
 134                 for( $i = 0; $i < 0x100; $i++ ) {
 135                         $unicode = isset( $cp1252[$i] ) ? $cp1252[$i] : $i;
 136                         $pairs[chr( $i )] = codepointToUtf8( $unicode );
 137                 }
 138                 return $pairs;
 139         }
 140
 141         /**
 142          * Convert from 8-bit Windows-1252 to UTF-8 if necessary.
 143          * @param string $text
 144          * @return string
 145          * @access private
 146          */
 147         function conv( $text ) {
 148                 global $wgUseLatin1;
 149                 return is_null( $text )
 150                         ? null
 151                         : ( $wgUseLatin1
 152                                 ? strtr( $text, $this->conversionTables )
 153                                 : $text );
 154         }
 155
 156         /**
 157          * Dump timestamp and message to output
 158          * @param string $message
 159          * @access private
 160          */
 161         function log( $message ) {
 162                 global $wgDBname;
 163                 echo $wgDBname . ' ' . wfTimestamp( TS_DB ) . ': ' . $message . "\n";
 164                 flush();
 165         }
 166
 167         /**
 168          * Initialize the chunked-insert system.
 169          * Rows will be inserted in chunks of the given number, rather
 170          * than in a giant INSERT...SELECT query, to keep the serialized
 171          * MySQL database replication from getting hung up. This way other
 172          * things can be going on during conversion without waiting for
 173          * slaves to catch up as badly.
 174          *
 175          * @param int $chunksize Number of rows to insert at once
 176          * @param int $final Total expected number of rows / id of last row,
 177          *                   used for progress reports.
 178          * @param string $table to insert on
 179          * @param string $fname function name to report in SQL
 180          * @access private
 181          */
 182         function setChunkScale( $chunksize, $final, $table, $fname ) {
 183                 $this->chunkSize  = $chunksize;
 184                 $this->chunkFinal = $final;
 185                 $this->chunkCount = 0;
 186                 $this->chunkStartTime = wfTime();
 187                 $this->chunkOptions = array( 'IGNORE' );
 188                 $this->chunkTable = $table;
 189                 $this->chunkFunction = $fname;
 190         }
 191
 192         /**
 193          * Chunked inserts: perform an insert if we've reached the chunk limit.
 194          * Prints a progress report with estimated completion time.
 195          * @param array &$chunk -- This will be emptied if an insert is done.
 196          * @param int $key A key identifier to use in progress estimation in
 197          *                 place of the number of rows inserted. Use this if
 198          *                 you provided a max key number instead of a count
 199          *                 as the final chunk number in setChunkScale()
 200          * @access private
 201          */
 202         function addChunk( &$chunk, $key = null ) {
 203                 if( count( $chunk ) >= $this->chunkSize ) {
 204                         $this->insertChunk( $chunk );
 205
 206                         $this->chunkCount += count( $chunk );
 207                         $now = wfTime();
 208                         $delta = $now - $this->chunkStartTime;
 209                         $rate = $this->chunkCount / $delta;
 210
 211                         if( is_null( $key ) ) {
 212                                 $completed = $this->chunkCount;
 213                         } else {
 214                                 $completed = $key;
 215                         }
 216                         $portion = $completed / $this->chunkFinal;
 217
 218                         $estimatedTotalTime = $delta / $portion;
 219                         $eta = $this->chunkStartTime + $estimatedTotalTime;
 220
 221                         printf( "%s: %6.2f%% done on %s; ETA %s [%d/%d] %.2f/sec\n",
 222                                 wfTimestamp( TS_DB, intval( $now ) ),
 223                                 $portion * 100.0,
 224                                 $this->chunkTable,
 225                                 wfTimestamp( TS_DB, intval( $eta ) ),
 226                                 $completed,
 227                                 $this->chunkFinal,
 228                                 $rate );
 229                         flush();
 230
 231                         $chunk = array();
 232                 }
 233         }
 234
 235         /**
 236          * Chunked inserts: perform an insert unconditionally, at the end, and log.
 237          * @param array &$chunk -- This will be emptied if an insert is done.
 238          * @access private
 239          */
 240         function lastChunk( &$chunk ) {
 241                 $n = count( $chunk );
 242                 if( $n > 0 ) {
 243                         $this->insertChunk( $chunk );
 244                 }
 245                 $this->log( "100.00% done on $this->chunkTable (last chunk $n rows)." );
 246         }
 247
 248         /**
 249          * Chunked inserts: perform an insert.
 250          * @param array &$chunk -- This will be emptied if an insert is done.
 251          * @access private
 252          */
 253         function insertChunk( &$chunk ) {
 254                 // Give slaves a chance to catch up
 255                 wfWaitForSlaves( $this->maxLag );
 256                 $this->dbw->insert( $this->chunkTable, $chunk, $this->chunkFunction, $this->chunkOptions );
 257         }
 258
 259
 260         /**
 261          * Copy and transcode a table to table_temp.
 262          * @param string $name Base name of the source table
 263          * @param string $tabledef CREATE TABLE definition, w/ $1 for the name
 264          * @param array $fields set of destination fields to these constants:
 265          *              MW_UPGRADE_COPY   - straight copy
 266          *              MW_UPGRADE_ENCODE - for old Latin1 wikis, conv to UTF-8
 267          *              MW_UPGRADE_NULL   - just put NULL
 268          * @param callable $callback An optional callback to modify the data
 269          *                           or perform other processing. Func should be
 270          *                           ( object $row, array $copy ) and return $copy
 271          * @access private
 272          */
 273         function copyTable( $name, $tabledef, $fields, $callback = null ) {
 274                 $fname = 'FiveUpgrade::copyTable';
 275
 276                 $name_temp = $name . '_temp';
 277                 $this->log( "Migrating $name table to $name_temp..." );
 278
 279                 $table      = $this->dbw->tableName( $name );
 280                 $table_temp = $this->dbw->tableName( $name_temp );
 281
 282                 // Create temporary table; we're going to copy everything in there,
 283                 // then at the end rename the final tables into place.
 284                 $def = str_replace( '$1', $table_temp, $tabledef );
 285                 $this->dbw->query( $def, $fname );
 286
 287                 $numRecords = $this->dbw->selectField( $name, 'COUNT(*)', '', $fname );
 288                 $this->setChunkScale( 100, $numRecords, $name_temp, $fname );
 289
 290                 // Pull all records from the second, streaming database connection.
 291                 $sourceFields = array_keys( array_filter( $fields,
 292                         create_function( '$x', 'return $x !== MW_UPGRADE_NULL;' ) ) );
 293                 $result = $this->dbr->select( $name,
 294                         $sourceFields,
 295                         '',
 296                         $fname );
 297
 298                 $add = array();
 299                 while( $row = $this->dbr->fetchObject( $result ) ) {
 300                         $copy = array();
 301                         foreach( $fields as $field => $source ) {
 302                                 if( $source === MW_UPGRADE_COPY ) {
 303                                         $copy[$field] = $row->$field;
 304                                 } elseif( $source === MW_UPGRADE_ENCODE ) {
 305                                         $copy[$field] = $this->conv( $row->$field );
 306                                 } elseif( $source === MW_UPGRADE_NULL ) {
 307                                         $copy[$field] = null;
 308                                 } else {
 309                                         $this->log( "Unknown field copy type: $field => $source" );
 310                                 }
 311                         }
 312                         if( is_callable( $callback ) ) {
 313                                 $copy = call_user_func( $callback, $row, $copy );
 314                         }
 315                         $add[] = $copy;
 316                         $this->addChunk( $add );
 317                 }
 318                 $this->lastChunk( $add );
 319                 $this->dbr->freeResult( $result );
 320
 321                 $this->log( "Done converting $name." );
 322                 $this->cleanupSwaps[] = $name;
 323         }
 324
 325         function upgradePage() {
 326                 $fname = "FiveUpgrade::upgradePage";
 327                 $chunksize = 100;
 328
 329                 if( $this->dbw->tableExists( 'page' ) ) {
 330                         $this->log( 'Page table already exists; aborting.' );
 331                         die( -1 );
 332                 }
 333
 334                 $this->log( "Checking cur table for unique title index and applying if necessary" );
 335                 checkDupes( true );
 336
 337                 $this->log( "...converting from cur/old to page/revision/text DB structure." );
 338
 339                 extract( $this->dbw->tableNames( 'cur', 'old', 'page', 'revision', 'text' ) );
 340
 341                 $this->log( "Creating page and revision tables..." );
 342                 $this->dbw->query("CREATE TABLE $page (
 343                         page_id int(8) unsigned NOT NULL auto_increment,
 344                         page_namespace int NOT NULL,
 345                         page_title varchar(255) binary NOT NULL,
 346                         page_restrictions tinyblob NOT NULL default '',
 347                         page_counter bigint(20) unsigned NOT NULL default '0',
 348                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 349                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 350                         page_random real unsigned NOT NULL,
 351                         page_touched char(14) binary NOT NULL default '',
 352                         page_latest int(8) unsigned NOT NULL,
 353                         page_len int(8) unsigned NOT NULL,
 354
 355                         PRIMARY KEY page_id (page_id),
 356                         UNIQUE INDEX name_title (page_namespace,page_title),
 357                         INDEX (page_random),
 358                         INDEX (page_len)
 359                         ) TYPE=InnoDB", $fname );
 360                 $this->dbw->query("CREATE TABLE $revision (
 361                         rev_id int(8) unsigned NOT NULL auto_increment,
 362                         rev_page int(8) unsigned NOT NULL,
 363                         rev_text_id int(8) unsigned NOT NULL,
 364                         rev_comment tinyblob NOT NULL default '',
 365                         rev_user int(5) unsigned NOT NULL default '0',
 366                         rev_user_text varchar(255) binary NOT NULL default '',
 367                         rev_timestamp char(14) binary NOT NULL default '',
 368                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 369                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 370
 371                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 372                         UNIQUE INDEX rev_id (rev_id),
 373                         INDEX rev_timestamp (rev_timestamp),
 374                         INDEX page_timestamp (rev_page,rev_timestamp),
 375                         INDEX user_timestamp (rev_user,rev_timestamp),
 376                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 377                         ) TYPE=InnoDB", $fname );
 378
 379                 $maxold = intval( $this->dbw->selectField( 'old', 'max(old_id)', '', $fname ) );
 380                 $this->log( "Last old record is {$maxold}" );
 381
 382                 global $wgLegacySchemaConversion;
 383                 if( $wgLegacySchemaConversion ) {
 384                         // Create HistoryBlobCurStub entries.
 385                         // Text will be pulled from the leftover 'cur' table at runtime.
 386                         echo "......Moving metadata from cur; using blob references to text in cur table.\n";
 387                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 388                         $cur_flags = "'object'";
 389                 } else {
 390                         // Copy all cur text in immediately: this may take longer but avoids
 391                         // having to keep an extra table around.
 392                         echo "......Moving text from cur.\n";
 393                         $cur_text = 'cur_text';
 394                         $cur_flags = "''";
 395                 }
 396
 397                 $maxcur = $this->dbw->selectField( 'cur', 'max(cur_id)', '', $fname );
 398                 $this->log( "Last cur entry is $maxcur" );
 399
 400                 /**
 401                  * Copy placeholder records for each page's current version into old
 402                  * Don't do any conversion here; text records are converted at runtime
 403                  * based on the flags (and may be originally binary!) while the meta
 404                  * fields will be converted in the old -> rev and cur -> page steps.
 405                  */
 406                 $this->setChunkScale( $chunksize, $maxcur, 'old', $fname );
 407                 $result = $this->dbr->query(
 408                         "SELECT cur_id, cur_namespace, cur_title, $cur_text AS text, cur_comment,
 409                         cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags AS flags
 410                         FROM $cur
 411                         ORDER BY cur_id", $fname );
 412                 $add = array();
 413                 while( $row = $this->dbr->fetchObject( $result ) ) {
 414                         $add[] = array(
 415                                 'old_namespace'  => $row->cur_namespace,
 416                                 'old_title'      => $row->cur_title,
 417                                 'old_text'       => $row->text,
 418                                 'old_comment'    => $row->cur_comment,
 419                                 'old_user'       => $row->cur_user,
 420                                 'old_user_text'  => $row->cur_user_text,
 421                                 'old_timestamp'  => $row->cur_timestamp,
 422                                 'old_minor_edit' => $row->cur_minor_edit,
 423                                 'old_flags'      => $row->flags );
 424                         $this->addChunk( $add, $row->cur_id );
 425                 }
 426                 $this->lastChunk( $add );
 427                 $this->dbr->freeResult( $result );
 428
 429                 /**
 430                  * Copy revision metadata from old into revision.
 431                  * We'll also do UTF-8 conversion of usernames and comments.
 432                  */
 433                 #$newmaxold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 434                 #$this->setChunkScale( $chunksize, $newmaxold, 'revision', $fname );
 435                 #$countold = $this->dbw->selectField( 'old', 'count(old_id)', '', $fname );
 436                 $countold = $this->dbw->selectField( 'old', 'max(old_id)', '', $fname );
 437                 $this->setChunkScale( $chunksize, $countold, 'revision', $fname );
 438
 439                 $this->log( "......Setting up revision table." );
 440                 $result = $this->dbr->query(
 441                         "SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 442                         old_timestamp, old_minor_edit
 443                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 444                         $fname );
 445
 446                 $add = array();
 447                 while( $row = $this->dbr->fetchObject( $result ) ) {
 448                         $add[] = array(
 449                                 'rev_id'         =>              $row->old_id,
 450                                 'rev_page'       =>              $row->cur_id,
 451                                 'rev_text_id'    =>              $row->old_id,
 452                                 'rev_comment'    => $this->conv( $row->old_comment ),
 453                                 'rev_user'       =>              $row->old_user,
 454                                 'rev_user_text'  => $this->conv( $row->old_user_text ),
 455                                 'rev_timestamp'  =>              $row->old_timestamp,
 456                                 'rev_minor_edit' =>              $row->old_minor_edit );
 457                         $this->addChunk( $add );
 458                 }
 459                 $this->lastChunk( $add );
 460                 $this->dbr->freeResult( $result );
 461
 462
 463                 /**
 464                  * Copy page metadata from cur into page.
 465                  * We'll also do UTF-8 conversion of titles.
 466                  */
 467                 $this->log( "......Setting up page table." );
 468                 $this->setChunkScale( $chunksize, $maxcur, 'page', $fname );
 469                 $result = $this->dbr->query( "
 470                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 471                                 cur_random, cur_touched, rev_id, LENGTH(cur_text) AS len
 472                         FROM $cur,$revision
 473                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}
 474                         ORDER BY cur_id", $fname );
 475                 $add = array();
 476                 while( $row = $this->dbr->fetchObject( $result ) ) {
 477                         $add[] = array(
 478                                 'page_id'           =>              $row->cur_id,
 479                                 'page_namespace'    =>              $row->cur_namespace,
 480                                 'page_title'        => $this->conv( $row->cur_title ),
 481                                 'page_restrictions' =>              $row->cur_restrictions,
 482                                 'page_counter'      =>              $row->cur_counter,
 483                                 'page_is_redirect'  =>              $row->cur_is_redirect,
 484                                 'page_is_new'       =>              $row->cur_is_new,
 485                                 'page_random'       =>              $row->cur_random,
 486                                 'page_touched'      =>              $this->dbw->timestamp(),
 487                                 'page_latest'       =>              $row->rev_id,
 488                                 'page_len'          =>              $row->len );
 489                         #$this->addChunk( $add, $row->cur_id );
 490                         $this->addChunk( $add );
 491                 }
 492                 $this->lastChunk( $add );
 493                 $this->dbr->freeResult( $result );
 494
 495                 $this->log( "...done with cur/old -> page/revision." );
 496         }
 497
 498         function upgradeLinks() {
 499                 $fname = 'FiveUpgrade::upgradeLinks';
 500                 $chunksize = 200;
 501                 extract( $this->dbw->tableNames( 'links', 'brokenlinks', 'pagelinks', 'cur' ) );
 502
 503                 $this->log( 'Checking for interwiki table change in case of bogus items...' );
 504                 if( $this->dbw->fieldExists( 'interwiki', 'iw_trans' ) ) {
 505                         $this->log( 'interwiki has iw_trans.' );
 506                 } else {
 507                         $this->log( 'adding iw_trans...' );
 508                         dbsource( 'maintenance/archives/patch-interwiki-trans.sql', $this->dbw );
 509                         $this->log( 'added iw_trans.' );
 510                 }
 511
 512                 $this->log( 'Creating pagelinks table...' );
 513                 $this->dbw->query( "
 514 CREATE TABLE $pagelinks (
 515   -- Key to the page_id of the page containing the link.
 516   pl_from int(8) unsigned NOT NULL default '0',
 517
 518   -- Key to page_namespace/page_title of the target page.
 519   -- The target page may or may not exist, and due to renames
 520   -- and deletions may refer to different page records as time
 521   -- goes by.
 522   pl_namespace int NOT NULL default '0',
 523   pl_title varchar(255) binary NOT NULL default '',
 524
 525   UNIQUE KEY pl_from(pl_from,pl_namespace,pl_title),
 526   KEY (pl_namespace,pl_title)
 527
 528 ) TYPE=InnoDB" );
 529
 530                 $this->log( 'Importing live links -> pagelinks' );
 531                 $nlinks = $this->dbw->selectField( 'links', 'count(*)', '', $fname );
 532                 if( $nlinks ) {
 533                         $this->setChunkScale( $chunksize, $nlinks, 'pagelinks', $fname );
 534                         $result = $this->dbr->query( "
 535                           SELECT l_from,cur_namespace,cur_title
 536                                 FROM $links, $cur
 537                                 WHERE l_to=cur_id", $fname );
 538                         $add = array();
 539                         while( $row = $this->dbr->fetchObject( $result ) ) {
 540                                 $add[] = array(
 541                                         'pl_from'      =>              $row->l_from,
 542                                         'pl_namespace' =>              $row->cur_namespace,
 543                                         'pl_title'     => $this->conv( $row->cur_title ) );
 544                                 $this->addChunk( $add );
 545                         }
 546                         $this->lastChunk( $add );
 547                 } else {
 548                         $this->log( 'no links!' );
 549                 }
 550
 551                 $this->log( 'Importing brokenlinks -> pagelinks' );
 552                 $nbrokenlinks = $this->dbw->selectField( 'brokenlinks', 'count(*)', '', $fname );
 553                 if( $nbrokenlinks ) {
 554                         $this->setChunkScale( $chunksize, $nbrokenlinks, 'pagelinks', $fname );
 555                         $result = $this->dbr->query(
 556                                 "SELECT bl_from, bl_to FROM $brokenlinks",
 557                                 $fname );
 558                         $add = array();
 559                         while( $row = $this->dbr->fetchObject( $result ) ) {
 560                                 $pagename = $this->conv( $row->bl_to );
 561                                 $title = Title::newFromText( $pagename );
 562                                 if( is_null( $title ) ) {
 563                                         $this->log( "** invalid brokenlink: $row->bl_from -> '$pagename' (converted from '$row->bl_to')" );
 564                                 } else {
 565                                         $add[] = array(
 566                                                 'pl_from'      => $row->bl_from,
 567                                                 'pl_namespace' => $title->getNamespace(),
 568                                                 'pl_title'     => $title->getDBkey() );
 569                                         $this->addChunk( $add );
 570                                 }
 571                         }
 572                         $this->lastChunk( $add );
 573                 } else {
 574                         $this->log( 'no brokenlinks!' );
 575                 }
 576
 577                 $this->log( 'Done with links.' );
 578         }
 579
 580         function upgradeUser() {
 581                 // Apply unique index, if necessary:
 582                 $duper = new UserDupes( $this->dbw );
 583                 if( $duper->hasUniqueIndex() ) {
 584                         $this->log( "Already have unique user_name index." );
 585                 } else {
 586                         $this->log( "Clearing user duplicates..." );
 587                         if( !$duper->clearDupes() ) {
 588                                 $this->log( "WARNING: Duplicate user accounts, may explode!" );
 589                         }
 590                 }
 591
 592                 $tabledef = <<<END
 593 CREATE TABLE $1 (
 594   user_id int(5) unsigned NOT NULL auto_increment,
 595   user_name varchar(255) binary NOT NULL default '',
 596   user_real_name varchar(255) binary NOT NULL default '',
 597   user_password tinyblob NOT NULL default '',
 598   user_newpassword tinyblob NOT NULL default '',
 599   user_email tinytext NOT NULL default '',
 600   user_options blob NOT NULL default '',
 601   user_touched char(14) binary NOT NULL default '',
 602   user_token char(32) binary NOT NULL default '',
 603   user_email_authenticated CHAR(14) BINARY,
 604   user_email_token CHAR(32) BINARY,
 605   user_email_token_expires CHAR(14) BINARY,
 606
 607   PRIMARY KEY user_id (user_id),
 608   UNIQUE INDEX user_name (user_name),
 609   INDEX (user_email_token)
 610
 611 ) TYPE=InnoDB
 612 END;
 613                 $fields = array(
 614                         'user_id'                  => MW_UPGRADE_COPY,
 615                         'user_name'                => MW_UPGRADE_ENCODE,
 616                         'user_real_name'           => MW_UPGRADE_ENCODE,
 617                         'user_password'            => MW_UPGRADE_COPY,
 618                         'user_newpassword'         => MW_UPGRADE_COPY,
 619                         'user_email'               => MW_UPGRADE_ENCODE,
 620                         'user_options'             => MW_UPGRADE_ENCODE,
 621                         'user_touched'             => MW_UPGRADE_CALLBACK,
 622                         'user_token'               => MW_UPGRADE_COPY,
 623                         'user_email_authenticated' => MW_UPGRADE_CALLBACK,
 624                         'user_email_token'         => MW_UPGRADE_NULL,
 625                         'user_email_token_expires' => MW_UPGRADE_NULL );
 626                 $this->copyTable( 'user', $tabledef, $fields,
 627                         array( &$this, 'userCallback' ) );
 628         }
 629
 630         function userCallback( $row, $copy ) {
 631                 $now = $this->dbw->timestamp();
 632                 $copy['user_touched'] = $now;
 633                 $copy['user_email_authenticated'] = $this->emailAuth ? $now : null;
 634                 return $copy;
 635         }
 636
 637         function upgradeImage() {
 638                 $tabledef = <<<END
 639 CREATE TABLE $1 (
 640   img_name varchar(255) binary NOT NULL default '',
 641   img_size int(8) unsigned NOT NULL default '0',
 642   img_width int(5)  NOT NULL default '0',
 643   img_height int(5)  NOT NULL default '0',
 644   img_metadata mediumblob NOT NULL,
 645   img_bits int(3)  NOT NULL default '0',
 646   img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 647   img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart") NOT NULL default "unknown",
 648   img_minor_mime varchar(32) NOT NULL default "unknown",
 649   img_description tinyblob NOT NULL default '',
 650   img_user int(5) unsigned NOT NULL default '0',
 651   img_user_text varchar(255) binary NOT NULL default '',
 652   img_timestamp char(14) binary NOT NULL default '',
 653
 654   PRIMARY KEY img_name (img_name),
 655   INDEX img_size (img_size),
 656   INDEX img_timestamp (img_timestamp)
 657 ) TYPE=InnoDB
 658 END;
 659                 $fields = array(
 660                         'img_name'        => MW_UPGRADE_ENCODE,
 661                         'img_size'        => MW_UPGRADE_COPY,
 662                         'img_width'       => MW_UPGRADE_CALLBACK,
 663                         'img_height'      => MW_UPGRADE_CALLBACK,
 664                         'img_metadata'    => MW_UPGRADE_CALLBACK,
 665                         'img_bits'        => MW_UPGRADE_CALLBACK,
 666                         'img_media_type'  => MW_UPGRADE_CALLBACK,
 667                         'img_major_mime'  => MW_UPGRADE_CALLBACK,
 668                         'img_minor_mime'  => MW_UPGRADE_CALLBACK,
 669                         'img_description' => MW_UPGRADE_ENCODE,
 670                         'img_user'        => MW_UPGRADE_COPY,
 671                         'img_user_text'   => MW_UPGRADE_ENCODE,
 672                         'img_timestamp'   => MW_UPGRADE_COPY );
 673                 $this->copyTable( 'image', $tabledef, $fields,
 674                         array( &$this, 'imageCallback' ) );
 675         }
 676
 677         function imageCallback( $row, $copy ) {
 678                 global $options;
 679                 if( !isset( $options['noimage'] ) ) {
 680                         // Fill in the new image info fields
 681                         $info = $this->imageInfo( $row->img_name );
 682
 683                         $copy['img_width'     ] = $info['width'];
 684                         $copy['img_height'    ] = $info['height'];
 685                         $copy['img_metadata'  ] = ""; // loaded on-demand
 686                         $copy['img_bits'      ] = $info['bits'];
 687                         $copy['img_media_type'] = $info['media'];
 688                         $copy['img_major_mime'] = $info['major'];
 689                         $copy['img_minor_mime'] = $info['minor'];
 690                 }
 691
 692                 // If doing UTF8 conversion the file must be renamed
 693                 $this->renameFile( $row->img_name, 'wfImageDir' );
 694
 695                 return $copy;
 696         }
 697
 698         function imageInfo( $name, $subdirCallback='wfImageDir', $basename = null ) {
 699                 if( is_null( $basename ) ) $basename = $name;
 700                 $dir = call_user_func( $subdirCallback, $basename );
 701                 $filename = $dir . '/' . $name;
 702                 $info = array(
 703                         'width'  => 0,
 704                         'height' => 0,
 705                         'bits'   => 0,
 706                         'media'  => '',
 707                         'major'  => '',
 708                         'minor'  => '' );
 709
 710                 $magic =& wfGetMimeMagic();
 711                 $mime = $magic->guessMimeType( $filename, true );
 712                 list( $info['major'], $info['minor'] ) = explode( '/', $mime );
 713
 714                 $info['media'] = $magic->getMediaType( $filename, $mime );
 715
 716                 # Height and width
 717                 $gis = false;
 718                 if( $mime == 'image/svg' ) {
 719                         $gis = wfGetSVGsize( $filename );
 720                 } elseif( $magic->isPHPImageType( $mime ) ) {
 721                         $gis = getimagesize( $filename );
 722                 } else {
 723                         $this->log( "Surprising mime type: $mime" );
 724                 }
 725                 if( $gis ) {
 726                         $info['width' ] = $gis[0];
 727                         $info['height'] = $gis[1];
 728                 }
 729                 if( isset( $gis['bits'] ) ) {
 730                         $info['bits'] = $gis['bits'];
 731                 }
 732
 733                 return $info;
 734         }
 735
 736
 737         /**
 738          * Truncate a table.
 739          * @param string $table The table name to be truncated
 740          */
 741         function clearTable( $table ) {
 742                 print "Clearing $table...\n";
 743                 $tableName = $this->db->tableName( $table );
 744                 $this->db->query( 'TRUNCATE $tableName' );
 745         }
 746
 747         /**
 748          * Rename a given image or archived image file to the converted filename,
 749          * leaving a symlink for URL compatibility.
 750          *
 751          * @param string $oldname pre-conversion filename
 752          * @param string $basename pre-conversion base filename for dir hashing, if an archive
 753          * @access private
 754          */
 755         function renameFile( $oldname, $subdirCallback='wfImageDir', $basename=null ) {
 756                 $newname = $this->conv( $oldname );
 757                 if( $newname == $oldname ) {
 758                         // No need to rename; another field triggered this row.
 759                         return false;
 760                 }
 761
 762                 if( is_null( $basename ) ) $basename = $oldname;
 763                 $ubasename = $this->conv( $basename );
 764                 $oldpath = call_user_func( $subdirCallback, $basename ) . '/' . $oldname;
 765                 $newpath = call_user_func( $subdirCallback, $ubasename ) . '/' . $newname;
 766
 767                 $this->log( "$oldpath -> $newpath" );
 768                 if( rename( $oldpath, $newpath ) ) {
 769                         $relpath = $this->relativize( $newpath, dirname( $oldpath ) );
 770                         if( !symlink( $relpath, $oldpath ) ) {
 771                                 $this->log( "... symlink failed!" );
 772                         }
 773                         return $newname;
 774                 } else {
 775                         $this->log( "... rename failed!" );
 776                         return false;
 777                 }
 778         }
 779
 780         /**
 781          * Generate a relative path name to the given file.
 782          * Assumes Unix-style paths, separators, and semantics.
 783          *
 784          * @param string $path Absolute destination path including target filename
 785          * @param string $from Absolute source path, directory only
 786          * @return string
 787          * @access private
 788          * @static
 789          */
 790         function relativize( $path, $from ) {
 791                 $pieces  = explode( '/', dirname( $path ) );
 792                 $against = explode( '/', $from );
 793
 794                 // Trim off common prefix
 795                 while( count( $pieces ) && count( $against )
 796                         && $pieces[0] == $against[0] ) {
 797                         array_shift( $pieces );
 798                         array_shift( $against );
 799                 }
 800
 801                 // relative dots to bump us to the parent
 802                 while( count( $against ) ) {
 803                         array_unshift( $pieces, '..' );
 804                         array_shift( $against );
 805                 }
 806
 807                 array_push( $pieces, basename( $path ) );
 808
 809                 return implode( '/', $pieces );
 810         }
 811
 812         function upgradeOldImage() {
 813                 $tabledef = <<<END
 814 CREATE TABLE $1 (
 815   -- Base filename: key to image.img_name
 816   oi_name varchar(255) binary NOT NULL default '',
 817
 818   -- Filename of the archived file.
 819   -- This is generally a timestamp and '!' prepended to the base name.
 820   oi_archive_name varchar(255) binary NOT NULL default '',
 821
 822   -- Other fields as in image...
 823   oi_size int(8) unsigned NOT NULL default 0,
 824   oi_width int(5) NOT NULL default 0,
 825   oi_height int(5) NOT NULL default 0,
 826   oi_bits int(3) NOT NULL default 0,
 827   oi_description tinyblob NOT NULL default '',
 828   oi_user int(5) unsigned NOT NULL default '0',
 829   oi_user_text varchar(255) binary NOT NULL default '',
 830   oi_timestamp char(14) binary NOT NULL default '',
 831
 832   INDEX oi_name (oi_name(10))
 833
 834 ) TYPE=InnoDB;
 835 END;
 836                 $fields = array(
 837                         'oi_name'         => MW_UPGRADE_ENCODE,
 838                         'oi_archive_name' => MW_UPGRADE_ENCODE,
 839                         'oi_size'         => MW_UPGRADE_COPY,
 840                         'oi_width'        => MW_UPGRADE_CALLBACK,
 841                         'oi_height'       => MW_UPGRADE_CALLBACK,
 842                         'oi_bits'         => MW_UPGRADE_CALLBACK,
 843                         'oi_description'  => MW_UPGRADE_ENCODE,
 844                         'oi_user'         => MW_UPGRADE_COPY,
 845                         'oi_user_text'    => MW_UPGRADE_ENCODE,
 846                         'oi_timestamp'    => MW_UPGRADE_COPY );
 847                 $this->copyTable( 'oldimage', $tabledef, $fields,
 848                         array( &$this, 'oldimageCallback' ) );
 849         }
 850
 851         function oldimageCallback( $row, $copy ) {
 852                 global $options;
 853                 if( !isset( $options['noimage'] ) ) {
 854                         // Fill in the new image info fields
 855                         $info = $this->imageInfo( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 856                         $copy['oi_width' ] = $info['width' ];
 857                         $copy['oi_height'] = $info['height'];
 858                         $copy['oi_bits'  ] = $info['bits'  ];
 859                 }
 860
 861                 // If doing UTF8 conversion the file must be renamed
 862                 $this->renameFile( $row->oi_archive_name, 'wfImageArchiveDir', $row->oi_name );
 863
 864                 return $copy;
 865         }
 866
 867
 868         function upgradeWatchlist() {
 869                 $fname = 'FiveUpgrade::upgradeWatchlist';
 870                 $chunksize = 100;
 871
 872                 extract( $this->dbw->tableNames( 'watchlist', 'watchlist_temp' ) );
 873
 874                 $this->log( 'Migrating watchlist table to watchlist_temp...' );
 875                 $this->dbw->query(
 876 "CREATE TABLE $watchlist_temp (
 877   -- Key to user_id
 878   wl_user int(5) unsigned NOT NULL,
 879
 880   -- Key to page_namespace/page_title
 881   -- Note that users may watch patches which do not exist yet,
 882   -- or existed in the past but have been deleted.
 883   wl_namespace int NOT NULL default '0',
 884   wl_title varchar(255) binary NOT NULL default '',
 885
 886   -- Timestamp when user was last sent a notification e-mail;
 887   -- cleared when the user visits the page.
 888   -- FIXME: add proper null support etc
 889   wl_notificationtimestamp varchar(14) binary NOT NULL default '0',
 890
 891   UNIQUE KEY (wl_user, wl_namespace, wl_title),
 892   KEY namespace_title (wl_namespace,wl_title)
 893
 894 ) TYPE=InnoDB;", $fname );
 895
 896                 // Fix encoding for Latin-1 upgrades, add some fields,
 897                 // and double article to article+talk pairs
 898                 $numwatched = $this->dbw->selectField( 'watchlist', 'count(*)', '', $fname );
 899
 900                 $this->setChunkScale( $chunksize, $numwatched * 2, 'watchlist_temp', $fname );
 901                 $result = $this->dbr->select( 'watchlist',
 902                         array(
 903                                 'wl_user',
 904                                 'wl_namespace',
 905                                 'wl_title' ),
 906                         '',
 907                         $fname );
 908
 909                 $add = array();
 910                 while( $row = $this->dbr->fetchObject( $result ) ) {
 911                         $now = $this->dbw->timestamp();
 912                         $add[] = array(
 913                                 'wl_user'      =>                        $row->wl_user,
 914                                 'wl_namespace' => Namespace::getSubject( $row->wl_namespace ),
 915                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 916                                 'wl_notificationtimestamp' =>            '0' );
 917                         $this->addChunk( $add );
 918
 919                         $add[] = array(
 920                                 'wl_user'      =>                        $row->wl_user,
 921                                 'wl_namespace' =>    Namespace::getTalk( $row->wl_namespace ),
 922                                 'wl_title'     =>           $this->conv( $row->wl_title ),
 923                                 'wl_notificationtimestamp' =>            '0' );
 924                         $this->addChunk( $add );
 925                 }
 926                 $this->lastChunk( $add );
 927                 $this->dbr->freeResult( $result );
 928
 929                 $this->log( 'Done converting watchlist.' );
 930                 $this->cleanupSwaps[] = 'watchlist';
 931         }
 932
 933         function upgradeLogging() {
 934                 $tabledef = <<<END
 935 CREATE TABLE $1 (
 936   -- Symbolic keys for the general log type and the action type
 937   -- within the log. The output format will be controlled by the
 938   -- action field, but only the type controls categorization.
 939   log_type char(10) NOT NULL default '',
 940   log_action char(10) NOT NULL default '',
 941
 942   -- Timestamp. Duh.
 943   log_timestamp char(14) NOT NULL default '19700101000000',
 944
 945   -- The user who performed this action; key to user_id
 946   log_user int unsigned NOT NULL default 0,
 947
 948   -- Key to the page affected. Where a user is the target,
 949   -- this will point to the user page.
 950   log_namespace int NOT NULL default 0,
 951   log_title varchar(255) binary NOT NULL default '',
 952
 953   -- Freeform text. Interpreted as edit history comments.
 954   log_comment varchar(255) NOT NULL default '',
 955
 956   -- LF separated list of miscellaneous parameters
 957   log_params blob NOT NULL default '',
 958
 959   KEY type_time (log_type, log_timestamp),
 960   KEY user_time (log_user, log_timestamp),
 961   KEY page_time (log_namespace, log_title, log_timestamp)
 962
 963 ) TYPE=InnoDB
 964 END;
 965                 $fields = array(
 966                         'log_type'      => MW_UPGRADE_COPY,
 967                         'log_action'    => MW_UPGRADE_COPY,
 968                         'log_timestamp' => MW_UPGRADE_COPY,
 969                         'log_user'      => MW_UPGRADE_COPY,
 970                         'log_namespace' => MW_UPGRADE_COPY,
 971                         'log_title'     => MW_UPGRADE_ENCODE,
 972                         'log_comment'   => MW_UPGRADE_ENCODE,
 973                         'log_params'    => MW_UPGRADE_ENCODE );
 974                 $this->copyTable( 'logging', $tabledef, $fields );
 975         }
 976
 977         function upgradeArchive() {
 978                 $tabledef = <<<END
 979 CREATE TABLE $1 (
 980   ar_namespace int NOT NULL default '0',
 981   ar_title varchar(255) binary NOT NULL default '',
 982   ar_text mediumblob NOT NULL default '',
 983
 984   ar_comment tinyblob NOT NULL default '',
 985   ar_user int(5) unsigned NOT NULL default '0',
 986   ar_user_text varchar(255) binary NOT NULL,
 987   ar_timestamp char(14) binary NOT NULL default '',
 988   ar_minor_edit tinyint(1) NOT NULL default '0',
 989
 990   ar_flags tinyblob NOT NULL default '',
 991
 992   ar_rev_id int(8) unsigned,
 993   ar_text_id int(8) unsigned,
 994
 995   KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp)
 996
 997 ) TYPE=InnoDB
 998 END;
 999                 $fields = array(
1000                         'ar_namespace'  => MW_UPGRADE_COPY,
1001                         'ar_title'      => MW_UPGRADE_ENCODE,
1002                         'ar_text'       => MW_UPGRADE_COPY,
1003                         'ar_comment'    => MW_UPGRADE_ENCODE,
1004                         'ar_user'       => MW_UPGRADE_COPY,
1005                         'ar_user_text'  => MW_UPGRADE_ENCODE,
1006                         'ar_timestamp'  => MW_UPGRADE_COPY,
1007                         'ar_minor_edit' => MW_UPGRADE_COPY,
1008                         'ar_flags'      => MW_UPGRADE_COPY,
1009                         'ar_rev_id'     => MW_UPGRADE_NULL,
1010                         'ar_text_id'    => MW_UPGRADE_NULL );
1011                 $this->copyTable( 'archive', $tabledef, $fields );
1012         }
1013
1014         function upgradeImagelinks() {
1015                 global $wgUseLatin1;
1016                 if( $wgUseLatin1 ) {
1017                         $tabledef = <<<END
1018 CREATE TABLE $1 (
1019   -- Key to page_id of the page containing the image / media link.
1020   il_from int(8) unsigned NOT NULL default '0',
1021
1022   -- Filename of target image.
1023   -- This is also the page_title of the file's description page;
1024   -- all such pages are in namespace 6 (NS_IMAGE).
1025   il_to varchar(255) binary NOT NULL default '',
1026
1027   UNIQUE KEY il_from(il_from,il_to),
1028   KEY (il_to)
1029
1030 ) TYPE=InnoDB
1031 END;
1032                         $fields = array(
1033                                 'il_from' => MW_UPGRADE_COPY,
1034                                 'il_to'   => MW_UPGRADE_ENCODE );
1035                         $this->copyTable( 'imagelinks', $tabledef, $fields );
1036                 }
1037         }
1038
1039         function upgradeCategorylinks() {
1040                 global $wgUseLatin1;
1041                 if( $wgUseLatin1 ) {
1042                         $tabledef = <<<END
1043 CREATE TABLE $1 (
1044   cl_from int(8) unsigned NOT NULL default '0',
1045   cl_to varchar(255) binary NOT NULL default '',
1046   cl_sortkey varchar(86) binary NOT NULL default '',
1047   cl_timestamp timestamp NOT NULL,
1048
1049   UNIQUE KEY cl_from(cl_from,cl_to),
1050   KEY cl_sortkey(cl_to,cl_sortkey),
1051   KEY cl_timestamp(cl_to,cl_timestamp)
1052 ) TYPE=InnoDB
1053 END;
1054                         $fields = array(
1055                                 'cl_from'      => MW_UPGRADE_COPY,
1056                                 'cl_to'        => MW_UPGRADE_ENCODE,
1057                                 'cl_sortkey'   => MW_UPGRADE_ENCODE,
1058                                 'cl_timestamp' => MW_UPGRADE_COPY );
1059                         $this->copyTable( 'categorylinks', $tabledef, $fields );
1060                 }
1061         }
1062
1063         function upgradeIpblocks() {
1064                 global $wgUseLatin1;
1065                 if( $wgUseLatin1 ) {
1066                         $tabledef = <<<END
1067 CREATE TABLE $1 (
1068   ipb_id int(8) NOT NULL auto_increment,
1069   ipb_address varchar(40) binary NOT NULL default '',
1070   ipb_user int(8) unsigned NOT NULL default '0',
1071   ipb_by int(8) unsigned NOT NULL default '0',
1072   ipb_reason tinyblob NOT NULL default '',
1073   ipb_timestamp char(14) binary NOT NULL default '',
1074   ipb_auto tinyint(1) NOT NULL default '0',
1075   ipb_expiry char(14) binary NOT NULL default '',
1076
1077   PRIMARY KEY ipb_id (ipb_id),
1078   INDEX ipb_address (ipb_address),
1079   INDEX ipb_user (ipb_user)
1080
1081 ) TYPE=InnoDB
1082 END;
1083                         $fields = array(
1084                                 'ipb_id'        => MW_UPGRADE_COPY,
1085                                 'ipb_address'   => MW_UPGRADE_COPY,
1086                                 'ipb_user'      => MW_UPGRADE_COPY,
1087                                 'ipb_by'        => MW_UPGRADE_COPY,
1088                                 'ipb_reason'    => MW_UPGRADE_ENCODE,
1089                                 'ipb_timestamp' => MW_UPGRADE_COPY,
1090                                 'ipb_auto'      => MW_UPGRADE_COPY,
1091                                 'ipb_expiry'    => MW_UPGRADE_COPY );
1092                         $this->copyTable( 'ipblocks', $tabledef, $fields );
1093                 }
1094         }
1095
1096         function upgradeRecentchanges() {
1097                 // There's a format change in the namespace field
1098                 $tabledef = <<<END
1099 CREATE TABLE $1 (
1100   rc_id int(8) NOT NULL auto_increment,
1101   rc_timestamp varchar(14) binary NOT NULL default '',
1102   rc_cur_time varchar(14) binary NOT NULL default '',
1103
1104   rc_user int(10) unsigned NOT NULL default '0',
1105   rc_user_text varchar(255) binary NOT NULL default '',
1106
1107   rc_namespace int NOT NULL default '0',
1108   rc_title varchar(255) binary NOT NULL default '',
1109
1110   rc_comment varchar(255) binary NOT NULL default '',
1111   rc_minor tinyint(3) unsigned NOT NULL default '0',
1112
1113   rc_bot tinyint(3) unsigned NOT NULL default '0',
1114   rc_new tinyint(3) unsigned NOT NULL default '0',
1115
1116   rc_cur_id int(10) unsigned NOT NULL default '0',
1117   rc_this_oldid int(10) unsigned NOT NULL default '0',
1118   rc_last_oldid int(10) unsigned NOT NULL default '0',
1119
1120   rc_type tinyint(3) unsigned NOT NULL default '0',
1121   rc_moved_to_ns tinyint(3) unsigned NOT NULL default '0',
1122   rc_moved_to_title varchar(255) binary NOT NULL default '',
1123
1124   rc_patrolled tinyint(3) unsigned NOT NULL default '0',
1125
1126   rc_ip char(15) NOT NULL default '',
1127
1128   PRIMARY KEY rc_id (rc_id),
1129   INDEX rc_timestamp (rc_timestamp),
1130   INDEX rc_namespace_title (rc_namespace, rc_title),
1131   INDEX rc_cur_id (rc_cur_id),
1132   INDEX new_name_timestamp(rc_new,rc_namespace,rc_timestamp),
1133   INDEX rc_ip (rc_ip)
1134
1135 ) TYPE=InnoDB
1136 END;
1137                 $fields = array(
1138                         'rc_id'             => MW_UPGRADE_COPY,
1139                         'rc_timestamp'      => MW_UPGRADE_COPY,
1140                         'rc_cur_time'       => MW_UPGRADE_COPY,
1141                         'rc_user'           => MW_UPGRADE_COPY,
1142                         'rc_user_text'      => MW_UPGRADE_ENCODE,
1143                         'rc_namespace'      => MW_UPGRADE_COPY,
1144                         'rc_title'          => MW_UPGRADE_ENCODE,
1145                         'rc_comment'        => MW_UPGRADE_ENCODE,
1146                         'rc_minor'          => MW_UPGRADE_COPY,
1147                         'rc_bot'            => MW_UPGRADE_COPY,
1148                         'rc_new'            => MW_UPGRADE_COPY,
1149                         'rc_cur_id'         => MW_UPGRADE_COPY,
1150                         'rc_this_oldid'     => MW_UPGRADE_COPY,
1151                         'rc_last_oldid'     => MW_UPGRADE_COPY,
1152                         'rc_type'           => MW_UPGRADE_COPY,
1153                         'rc_moved_to_ns'    => MW_UPGRADE_COPY,
1154                         'rc_moved_to_title' => MW_UPGRADE_ENCODE,
1155                         'rc_patrolled'      => MW_UPGRADE_COPY,
1156                         'rc_ip'             => MW_UPGRADE_COPY );
1157                 $this->copyTable( 'recentchanges', $tabledef, $fields );
1158         }
1159
1160         function upgradeQuerycache() {
1161                 // There's a format change in the namespace field
1162                 $tabledef = <<<END
1163 CREATE TABLE $1 (
1164   -- A key name, generally the base name of of the special page.
1165   qc_type char(32) NOT NULL,
1166
1167   -- Some sort of stored value. Sizes, counts...
1168   qc_value int(5) unsigned NOT NULL default '0',
1169
1170   -- Target namespace+title
1171   qc_namespace int NOT NULL default '0',
1172   qc_title char(255) binary NOT NULL default '',
1173
1174   KEY (qc_type,qc_value)
1175
1176 ) TYPE=InnoDB
1177 END;
1178                 $fields = array(
1179                         'qc_type'      => MW_UPGRADE_COPY,
1180                         'qc_value'     => MW_UPGRADE_COPY,
1181                         'qc_namespace' => MW_UPGRADE_COPY,
1182                         'qc_title'     => MW_UPGRADE_ENCODE );
1183                 $this->copyTable( 'querycache', $tabledef, $fields );
1184         }
1185
1186         /**
1187          * Rename all our temporary tables into final place.
1188          * We've left things in place so a read-only wiki can continue running
1189          * on the old code during all this.
1190          */
1191         function upgradeCleanup() {
1192                 $this->renameTable( 'old', 'text' );
1193
1194                 foreach( $this->cleanupSwaps as $table ) {
1195                         $this->swap( $table );
1196                 }
1197         }
1198
1199         function renameTable( $from, $to ) {
1200                 $this->log( "Renaming $from to $to..." );
1201
1202                 $fromtable = $this->dbw->tableName( $from );
1203                 $totable   = $this->dbw->tableName( $to );
1204                 $this->dbw->query( "ALTER TABLE $fromtable RENAME TO $totable" );
1205         }
1206
1207         function swap( $base ) {
1208                 $this->renameTable( $base, "{$base}_old" );
1209                 $this->renameTable( "{$base}_temp", $base );
1210         }
1211
1212 }
1213
1214 ?>