includes/specials/SpecialVersion.php

   1 <?php
   2 /**
   3  * Implements Special:Version
   4  *
   5  * Copyright © 2005 Ævar Arnfjörð Bjarmason
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 /**
  27  * Give information about the version of MediaWiki, PHP, the DB and extensions
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class SpecialVersion extends SpecialPage {
  32
  33         protected $firstExtOpened = false;
  34
  35         protected static $extensionTypes = false;
  36
  37         protected static $viewvcUrls = array(
  38                 'svn+ssh://svn.wikimedia.org/svnroot/mediawiki' => 'http://svn.wikimedia.org/viewvc/mediawiki',
  39                 'http://svn.wikimedia.org/svnroot/mediawiki' => 'http://svn.wikimedia.org/viewvc/mediawiki',
  40                 # Doesn't work at the time of writing but maybe some day:
  41                 'https://svn.wikimedia.org/viewvc/mediawiki' => 'http://svn.wikimedia.org/viewvc/mediawiki',
  42         );
  43
  44         public function __construct(){
  45                 parent::__construct( 'Version' );
  46         }
  47
  48         /**
  49          * main()
  50          */
  51         public function execute( $par ) {
  52                 global $wgOut, $wgSpecialVersionShowHooks, $wgContLang, $wgRequest;
  53
  54                 $this->setHeaders();
  55                 $this->outputHeader();
  56                 $wgOut->allowClickjacking();
  57
  58                 $wgOut->addHTML( Xml::openElement( 'div',
  59                         array( 'dir' => $wgContLang->getDir() ) ) );
  60                 $text =
  61                         $this->getMediaWikiCredits() .
  62                         $this->softwareInformation() .
  63                         $this->getExtensionCredits();
  64                 if ( $wgSpecialVersionShowHooks ) {
  65                         $text .= $this->getWgHooks();
  66                 }
  67
  68                 $wgOut->addWikiText( $text );
  69                 $wgOut->addHTML( $this->IPInfo() );
  70                 $wgOut->addHTML( '</div>' );
  71
  72                 if ( $wgRequest->getVal( 'easteregg' ) ) {
  73                         if ( $this->showEasterEgg() ) {
  74                                 // TODO: put something interesting here
  75                         }
  76                 }
  77         }
  78
  79         /**
  80          * Returns wiki text showing the license information.
  81          *
  82          * @return string
  83          */
  84         private static function getMediaWikiCredits() {
  85                 $ret = Xml::element( 'h2', array( 'id' => 'mw-version-license' ), wfMsg( 'version-license' ) );
  86
  87                 // This text is always left-to-right.
  88                 $ret .= '<div>';
  89                 $ret .= "__NOTOC__
  90                 " . self::getCopyrightAndAuthorList() . "\n
  91                 " . wfMsg( 'version-license-info' );
  92                 $ret .= '</div>';
  93
  94                 return str_replace( "\t\t", '', $ret ) . "\n";
  95         }
  96
  97         /**
  98          * Get the "MediaWiki is copyright 2001-20xx by lots of cool guys" text
  99          *
 100          * @return String
 101          */
 102         public static function getCopyrightAndAuthorList() {
 103                 global $wgLang;
 104
 105                 $authorList = array(
 106                         'Magnus Manske', 'Brion Vibber', 'Lee Daniel Crocker',
 107                         'Tim Starling', 'Erik Möller', 'Gabriel Wicke', 'Ævar Arnfjörð Bjarmason',
 108                         'Niklas Laxström', 'Domas Mituzas', 'Rob Church', 'Yuri Astrakhan',
 109                         'Aryeh Gregor', 'Aaron Schulz', 'Andrew Garrett', 'Raimond Spekking',
 110                         'Alexandre Emsenhuber', 'Siebrand Mazeland', 'Chad Horohoe',
 111                         'Roan Kattouw', 'Trevor Parscal', 'Bryan Tong Minh', 'Sam Reed',
 112                         wfMsg( 'version-poweredby-others' )
 113                 );
 114
 115                 return wfMsg( 'version-poweredby-credits', date( 'Y' ),
 116                         $wgLang->listToText( $authorList ) );
 117         }
 118
 119         /**
 120          * Returns wiki text showing the third party software versions (apache, php, mysql).
 121          *
 122          * @return string
 123          */
 124         static function softwareInformation() {
 125                 $dbr = wfGetDB( DB_SLAVE );
 126
 127                 // Put the software in an array of form 'name' => 'version'. All messages should
 128                 // be loaded here, so feel free to use wfMsg*() in the 'name'. Raw HTML or wikimarkup
 129                 // can be used.
 130                 $software = array();
 131                 $software['[http://www.mediawiki.org/ MediaWiki]'] = self::getVersionLinked();
 132                 $software['[http://www.php.net/ PHP]'] = phpversion() . " (" . php_sapi_name() . ")";
 133                 $software[$dbr->getSoftwareLink()] = $dbr->getServerInfo();
 134
 135                 // Allow a hook to add/remove items.
 136                 wfRunHooks( 'SoftwareInfo', array( &$software ) );
 137
 138                 $out = Xml::element( 'h2', array( 'id' => 'mw-version-software' ), wfMsg( 'version-software' ) ) .
 139                            Xml::openElement( 'table', array( 'class' => 'wikitable', 'id' => 'sv-software' ) ) .
 140                                 "<tr>
 141                                         <th>" . wfMsg( 'version-software-product' ) . "</th>
 142                                         <th>" . wfMsg( 'version-software-version' ) . "</th>
 143                                 </tr>\n";
 144
 145                 foreach( $software as $name => $version ) {
 146                         $out .= "<tr>
 147                                         <td>" . $name . "</td>
 148                                         <td>" . $version . "</td>
 149                                 </tr>\n";
 150                 }
 151
 152                 return $out . Xml::closeElement( 'table' );
 153         }
 154
 155         /**
 156          * Return a string of the MediaWiki version with SVN revision if available.
 157          *
 158          * @return mixed
 159          */
 160         public static function getVersion( $flags = '' ) {
 161                 global $wgVersion, $IP;
 162                 wfProfileIn( __METHOD__ );
 163
 164                 $info = self::getSvnInfo( $IP );
 165                 if ( !$info ) {
 166                         $version = $wgVersion;
 167                 } elseif( $flags === 'nodb' ) {
 168                         $version = "$wgVersion (r{$info['checkout-rev']})";
 169                 } else {
 170                         $version = $wgVersion . ' ' .
 171                                 wfMsg(
 172                                         'version-svn-revision',
 173                                         isset( $info['directory-rev'] ) ? $info['directory-rev'] : '',
 174                                         $info['checkout-rev']
 175                                 );
 176                 }
 177
 178                 wfProfileOut( __METHOD__ );
 179                 return $version;
 180         }
 181
 182         /**
 183          * Return a wikitext-formatted string of the MediaWiki version with a link to
 184          * the SVN revision if available.
 185          *
 186          * @return mixed
 187          */
 188         public static function getVersionLinked() {
 189                 global $wgVersion, $IP;
 190                 wfProfileIn( __METHOD__ );
 191
 192                 $info = self::getSvnInfo( $IP );
 193
 194                 if ( isset( $info['checkout-rev'] ) ) {
 195                         $linkText = wfMsg(
 196                                 'version-svn-revision',
 197                                 isset( $info['directory-rev'] ) ? $info['directory-rev'] : '',
 198                                 $info['checkout-rev']
 199                         );
 200
 201                         if ( isset( $info['viewvc-url'] ) ) {
 202                                 $version = "$wgVersion [{$info['viewvc-url']} $linkText]";
 203                         } else {
 204                                 $version = "$wgVersion $linkText";
 205                         }
 206                 } else {
 207                         $version = $wgVersion;
 208                 }
 209
 210                 wfProfileOut( __METHOD__ );
 211                 return $version;
 212         }
 213
 214         /**
 215          * Returns an array with the base extension types.
 216          * Type is stored as array key, the message as array value.
 217          *
 218          * TODO: ideally this would return all extension types, including
 219          * those added by SpecialVersionExtensionTypes. This is not possible
 220          * since this hook is passing along $this though.
 221          *
 222          * @since 1.17
 223          *
 224          * @return array
 225          */
 226         public static function getExtensionTypes() {
 227                 if ( self::$extensionTypes === false ) {
 228                         self::$extensionTypes = array(
 229                                 'specialpage' => wfMsg( 'version-specialpages' ),
 230                                 'parserhook' => wfMsg( 'version-parserhooks' ),
 231                                 'variable' => wfMsg( 'version-variables' ),
 232                                 'media' => wfMsg( 'version-mediahandlers' ),
 233                                 'antispam' => wfMsg( 'version-antispam' ),
 234                                 'skin' => wfMsg( 'version-skins' ),
 235                                 'other' => wfMsg( 'version-other' ),
 236                         );
 237
 238                         wfRunHooks( 'ExtensionTypes', array( &self::$extensionTypes ) );
 239                 }
 240
 241                 return self::$extensionTypes;
 242         }
 243
 244         /**
 245          * Returns the internationalized name for an extension type.
 246          *
 247          * @since 1.17
 248          *
 249          * @param $type String
 250          *
 251          * @return string
 252          */
 253         public static function getExtensionTypeName( $type ) {
 254                 $types = self::getExtensionTypes();
 255                 return isset( $types[$type] ) ? $types[$type] : $types['other'];
 256         }
 257
 258         /**
 259          * Generate wikitext showing extensions name, URL, author and description.
 260          *
 261          * @return String: Wikitext
 262          */
 263         function getExtensionCredits() {
 264                 global $wgExtensionCredits, $wgExtensionFunctions, $wgParser, $wgSkinExtensionFunctions;
 265
 266                 if ( !count( $wgExtensionCredits ) && !count( $wgExtensionFunctions ) && !count( $wgSkinExtensionFunctions ) ) {
 267                         return '';
 268                 }
 269
 270                 $extensionTypes = self::getExtensionTypes();
 271
 272                 /**
 273                  * @deprecated as of 1.17, use hook ExtensionTypes instead.
 274                  */
 275                 wfRunHooks( 'SpecialVersionExtensionTypes', array( &$this, &$extensionTypes ) );
 276
 277                 $out = Xml::element( 'h2', array( 'id' => 'mw-version-ext' ), wfMsg( 'version-extensions' ) ) .
 278                         Xml::openElement( 'table', array( 'class' => 'wikitable', 'id' => 'sv-ext' ) );
 279
 280                 // Make sure the 'other' type is set to an array.
 281                 if ( !array_key_exists( 'other', $wgExtensionCredits ) ) {
 282                         $wgExtensionCredits['other'] = array();
 283                 }
 284
 285                 // Find all extensions that do not have a valid type and give them the type 'other'.
 286                 foreach ( $wgExtensionCredits as $type => $extensions ) {
 287                         if ( !array_key_exists( $type, $extensionTypes ) ) {
 288                                 $wgExtensionCredits['other'] = array_merge( $wgExtensionCredits['other'], $extensions );
 289                         }
 290                 }
 291
 292                 // Loop through the extension categories to display their extensions in the list.
 293                 foreach ( $extensionTypes as $type => $message ) {
 294                         if ( $type != 'other' ) {
 295                                 $out .= $this->getExtensionCategory( $type, $message );
 296                         }
 297                 }
 298
 299                 // We want the 'other' type to be last in the list.
 300                 $out .= $this->getExtensionCategory( 'other', $extensionTypes['other'] );
 301
 302                 if ( count( $wgExtensionFunctions ) ) {
 303                         $out .= $this->openExtType( wfMsg( 'version-extension-functions' ), 'extension-functions' );
 304                         $out .= '<tr><td colspan="4">' . $this->listToText( $wgExtensionFunctions ) . "</td></tr>\n";
 305                 }
 306
 307                 $tags = $wgParser->getTags();
 308                 $cnt = count( $tags );
 309
 310                 if ( $cnt ) {
 311                         for ( $i = 0; $i < $cnt; ++$i ) {
 312                                 $tags[$i] = "&lt;{$tags[$i]}&gt;";
 313                         }
 314                         $out .= $this->openExtType( wfMsg( 'version-parser-extensiontags' ), 'parser-tags' );
 315                         $out .= '<tr><td colspan="4">' . $this->listToText( $tags ). "</td></tr>\n";
 316                 }
 317
 318                 if( count( $fhooks = $wgParser->getFunctionHooks() ) ) {
 319                         $out .= $this->openExtType( wfMsg( 'version-parser-function-hooks' ), 'parser-function-hooks' );
 320                         $out .= '<tr><td colspan="4">' . $this->listToText( $fhooks ) . "</td></tr>\n";
 321                 }
 322
 323                 if ( count( $wgSkinExtensionFunctions ) ) {
 324                         $out .= $this->openExtType( wfMsg( 'version-skin-extension-functions' ), 'skin-extension-functions' );
 325                         $out .= '<tr><td colspan="4">' . $this->listToText( $wgSkinExtensionFunctions ) . "</td></tr>\n";
 326                 }
 327
 328                 $out .= Xml::closeElement( 'table' );
 329
 330                 return $out;
 331         }
 332
 333         /**
 334          * Creates and returns the HTML for a single extension category.
 335          *
 336          * @since 1.17
 337          *
 338          * @param $type String
 339          * @param $message String
 340          *
 341          * @return string
 342          */
 343         protected function getExtensionCategory( $type, $message ) {
 344                 global $wgExtensionCredits;
 345
 346                 $out = '';
 347
 348                 if ( array_key_exists( $type, $wgExtensionCredits ) && count( $wgExtensionCredits[$type] ) > 0 ) {
 349                         $out .= $this->openExtType( $message, 'credits-' . $type );
 350
 351                         usort( $wgExtensionCredits[$type], array( $this, 'compare' ) );
 352
 353                         foreach ( $wgExtensionCredits[$type] as $extension ) {
 354                                 $out .= $this->getCreditsForExtension( $extension );
 355                         }
 356                 }
 357
 358                 return $out;
 359         }
 360
 361         /**
 362          * Callback to sort extensions by type.
 363          */
 364         function compare( $a, $b ) {
 365                 global $wgLang;
 366                 if( $a['name'] === $b['name'] ) {
 367                         return 0;
 368                 } else {
 369                         return $wgLang->lc( $a['name'] ) > $wgLang->lc( $b['name'] )
 370                                 ? 1
 371                                 : -1;
 372                 }
 373         }
 374
 375         /**
 376          * Creates and formats the creidts for a single extension and returns this.
 377          *
 378          * @param $extension Array
 379          *
 380          * @return string
 381          */
 382         function getCreditsForExtension( array $extension ) {
 383                 $name = isset( $extension['name'] ) ? $extension['name'] : '[no name]';
 384
 385                 if ( isset( $extension['path'] ) ) {
 386                         $svnInfo = self::getSvnInfo( dirname($extension['path']) );
 387                         $directoryRev = isset( $svnInfo['directory-rev'] ) ? $svnInfo['directory-rev'] : null;
 388                         $checkoutRev = isset( $svnInfo['checkout-rev'] ) ? $svnInfo['checkout-rev'] : null;
 389                         $viewvcUrl = isset( $svnInfo['viewvc-url'] ) ? $svnInfo['viewvc-url'] : null;
 390                 } else {
 391                         $directoryRev = null;
 392                         $checkoutRev = null;
 393                         $viewvcUrl = null;
 394                 }
 395
 396                 # Make main link (or just the name if there is no URL).
 397                 if ( isset( $extension['url'] ) ) {
 398                         $mainLink = "[{$extension['url']} $name]";
 399                 } else {
 400                         $mainLink = $name;
 401                 }
 402
 403                 if ( isset( $extension['version'] ) ) {
 404                         $versionText = '<span class="mw-version-ext-version">' .
 405                                 wfMsg( 'version-version', $extension['version'] ) .
 406                                 '</span>';
 407                 } else {
 408                         $versionText = '';
 409                 }
 410
 411                 # Make subversion text/link.
 412                 if ( $checkoutRev ) {
 413                         $svnText = wfMsg( 'version-svn-revision', $directoryRev, $checkoutRev );
 414                         $svnText = isset( $viewvcUrl ) ? "[$viewvcUrl $svnText]" : $svnText;
 415                 } else {
 416                         $svnText = false;
 417                 }
 418
 419                 # Make description text.
 420                 $description = isset ( $extension['description'] ) ? $extension['description'] : '';
 421
 422                 if( isset ( $extension['descriptionmsg'] ) ) {
 423                         # Look for a localized description.
 424                         $descriptionMsg = $extension['descriptionmsg'];
 425
 426                         if( is_array( $descriptionMsg ) ) {
 427                                 $descriptionMsgKey = $descriptionMsg[0]; // Get the message key
 428                                 array_shift( $descriptionMsg ); // Shift out the message key to get the parameters only
 429                                 array_map( "htmlspecialchars", $descriptionMsg ); // For sanity
 430                                 $description = wfMsg( $descriptionMsgKey, $descriptionMsg );
 431                         } else {
 432                                 $description = wfMsg( $descriptionMsg );
 433                         }
 434                 }
 435
 436                 if ( $svnText !== false ) {
 437                         $extNameVer = "<tr>
 438                                 <td><em>$mainLink $versionText</em></td>
 439                                 <td><em>$svnText</em></td>";
 440                 } else {
 441                         $extNameVer = "<tr>
 442                                 <td colspan=\"2\"><em>$mainLink $versionText</em></td>";
 443                 }
 444
 445                 $author = isset ( $extension['author'] ) ? $extension['author'] : array();
 446                 $extDescAuthor = "<td>$description</td>
 447                         <td>" . $this->listToText( (array)$author, false ) . "</td>
 448                         </tr>\n";
 449
 450                 return $extNameVer . $extDescAuthor;
 451         }
 452
 453         /**
 454          * Generate wikitext showing hooks in $wgHooks.
 455          *
 456          * @return String: wikitext
 457          */
 458         private function getWgHooks() {
 459                 global $wgHooks;
 460
 461                 if ( count( $wgHooks ) ) {
 462                         $myWgHooks = $wgHooks;
 463                         ksort( $myWgHooks );
 464
 465                         $ret = Xml::element( 'h2', array( 'id' => 'mw-version-hooks' ), wfMsg( 'version-hooks' ) ) .
 466                                 Xml::openElement( 'table', array( 'class' => 'wikitable', 'id' => 'sv-hooks' ) ) .
 467                                 "<tr>
 468                                         <th>" . wfMsg( 'version-hook-name' ) . "</th>
 469                                         <th>" . wfMsg( 'version-hook-subscribedby' ) . "</th>
 470                                 </tr>\n";
 471
 472                         foreach ( $myWgHooks as $hook => $hooks )
 473                                 $ret .= "<tr>
 474                                                 <td>$hook</td>
 475                                                 <td>" . $this->listToText( $hooks ) . "</td>
 476                                         </tr>\n";
 477
 478                         $ret .= Xml::closeElement( 'table' );
 479                         return $ret;
 480                 } else
 481                         return '';
 482         }
 483
 484         private function openExtType( $text, $name = null ) {
 485                 $opt = array( 'colspan' => 4 );
 486                 $out = '';
 487
 488                 if( $this->firstExtOpened ) {
 489                         // Insert a spacing line
 490                         $out .= '<tr class="sv-space">' . Html::element( 'td', $opt ) . "</tr>\n";
 491                 }
 492                 $this->firstExtOpened = true;
 493
 494                 if( $name ) {
 495                         $opt['id'] = "sv-$name";
 496                 }
 497
 498                 $out .= "<tr>" . Xml::element( 'th', $opt, $text ) . "</tr>\n";
 499
 500                 return $out;
 501         }
 502
 503         /**
 504          * Get information about client's IP address.
 505          *
 506          * @return String: HTML fragment
 507          */
 508         private function IPInfo() {
 509                 $ip =  str_replace( '--', ' - ', htmlspecialchars( wfGetIP() ) );
 510                 return "<!-- visited from $ip -->\n" .
 511                         "<span style='display:none'>visited from $ip</span>";
 512         }
 513
 514         /**
 515          * Convert an array of items into a list for display.
 516          *
 517          * @param $list Array of elements to display
 518          * @param $sort Boolean: whether to sort the items in $list
 519          *
 520          * @return String
 521          */
 522         function listToText( $list, $sort = true ) {
 523                 $cnt = count( $list );
 524
 525                 if ( $cnt == 1 ) {
 526                         // Enforce always returning a string
 527                         return (string)self::arrayToString( $list[0] );
 528                 } elseif ( $cnt == 0 ) {
 529                         return '';
 530                 } else {
 531                         global $wgLang;
 532                         if ( $sort ) {
 533                                 sort( $list );
 534                         }
 535                         return $wgLang->listToText( array_map( array( __CLASS__, 'arrayToString' ), $list ) );
 536                 }
 537         }
 538
 539         /**
 540          * Convert an array or object to a string for display.
 541          *
 542          * @param $list Mixed: will convert an array to string if given and return
 543          *              the paramater unaltered otherwise
 544          *
 545          * @return Mixed
 546          */
 547         static function arrayToString( $list ) {
 548                 if( is_array( $list ) && count( $list ) == 1 )
 549                         $list = $list[0];
 550                 if( is_object( $list ) ) {
 551                         $class = get_class( $list );
 552                         return "($class)";
 553                 } elseif ( !is_array( $list ) ) {
 554                         return $list;
 555                 } else {
 556                         if( is_object( $list[0] ) )
 557                                 $class = get_class( $list[0] );
 558                         else
 559                                 $class = $list[0];
 560                         return "($class, {$list[1]})";
 561                 }
 562         }
 563
 564         /**
 565          * Get an associative array of information about a given path, from its .svn
 566          * subdirectory. Returns false on error, such as if the directory was not
 567          * checked out with subversion.
 568          *
 569          * Returned keys are:
 570          *    Required:
 571          *        checkout-rev          The revision which was checked out
 572          *    Optional:
 573          *        directory-rev         The revision when the directory was last modified
 574          *        url                   The subversion URL of the directory
 575          *        repo-url              The base URL of the repository
 576          *        viewvc-url            A ViewVC URL pointing to the checked-out revision
 577          */
 578         public static function getSvnInfo( $dir ) {
 579                 // http://svnbook.red-bean.com/nightly/en/svn.developer.insidewc.html
 580                 $entries = $dir . '/.svn/entries';
 581
 582                 if( !file_exists( $entries ) ) {
 583                         return false;
 584                 }
 585
 586                 $lines = file( $entries );
 587                 if ( !count( $lines ) ) {
 588                         return false;
 589                 }
 590
 591                 // check if file is xml (subversion release <= 1.3) or not (subversion release = 1.4)
 592                 if( preg_match( '/^<\?xml/', $lines[0] ) ) {
 593                         // subversion is release <= 1.3
 594                         if( !function_exists( 'simplexml_load_file' ) ) {
 595                                 // We could fall back to expat... YUCK
 596                                 return false;
 597                         }
 598
 599                         // SimpleXml whines about the xmlns...
 600                         wfSuppressWarnings();
 601                         $xml = simplexml_load_file( $entries );
 602                         wfRestoreWarnings();
 603
 604                         if( $xml ) {
 605                                 foreach( $xml->entry as $entry ) {
 606                                         if( $xml->entry[0]['name'] == '' ) {
 607                                                 // The directory entry should always have a revision marker.
 608                                                 if( $entry['revision'] ) {
 609                                                         return array( 'checkout-rev' => intval( $entry['revision'] ) );
 610                                                 }
 611                                         }
 612                                 }
 613                         }
 614
 615                         return false;
 616                 }
 617
 618                 // Subversion is release 1.4 or above.
 619                 if ( count( $lines ) < 11 ) {
 620                         return false;
 621                 }
 622
 623                 $info = array(
 624                         'checkout-rev' => intval( trim( $lines[3] ) ),
 625                         'url' => trim( $lines[4] ),
 626                         'repo-url' => trim( $lines[5] ),
 627                         'directory-rev' => intval( trim( $lines[10] ) )
 628                 );
 629
 630                 if ( isset( self::$viewvcUrls[$info['repo-url']] ) ) {
 631                         $viewvc = str_replace(
 632                                 $info['repo-url'],
 633                                 self::$viewvcUrls[$info['repo-url']],
 634                                 $info['url']
 635                         );
 636
 637                         $viewvc .= '/?pathrev=';
 638                         $viewvc .= urlencode( $info['checkout-rev'] );
 639                         $info['viewvc-url'] = $viewvc;
 640                 }
 641
 642                 return $info;
 643         }
 644
 645         /**
 646          * Retrieve the revision number of a Subversion working directory.
 647          *
 648          * @param $dir String: directory of the svn checkout
 649          *
 650          * @return Integer: revision number as int
 651          */
 652         public static function getSvnRevision( $dir ) {
 653                 $info = self::getSvnInfo( $dir );
 654
 655                 if ( $info === false ) {
 656                         return false;
 657                 } elseif ( isset( $info['checkout-rev'] ) ) {
 658                         return $info['checkout-rev'];
 659                 } else {
 660                         return false;
 661                 }
 662         }
 663
 664         function showEasterEgg() {
 665                 $rx = $rp = '';
 666                 for ( $i = 1; $i <= 4; $i++ ) {
 667                         $rx .= '([^j]*)j';
 668                         $rp .= "+(\\$i)";
 669                 }
 670                 $rx = "/$rx/e";
 671                 $haystack = strtr( 'kr=<<<zb/./usebzbjbki=<<<z
 672 쵍潅旅𞗎왎캎𐺆ߨ趥䲀쫥𒯡𚦄𚬀Ꝍ螃䤎꤯溃𔱢櫅褡䞠⽬✡栠迤⾏𐵥쾃𜜧줏袏浣।궇䬃꼁꿤𘐧
 673 𞛁윥桯䦎䵎Ꞅ𚠣涁쭀讀撠蝠讄伣𞫡枮ⵇ𚥣𐡃𐭏沢𞜄𞴏𞻧⠤쳯蒣䮎𒵬컡豣ۅ𐯥⦇𐫁漅蛁꼤从楆
 674 ⥀䡦𚭅沢⠬輁䲯좡梇䟇伄육较촅䥃要𞝄迯쟠꺃ⶥ栆궀撠満ꐣ𞦇좧𐠅𞫠𐠧𚮣讇輤亀➏欣첡쮧⽬
 675 氀쮧跧𐫥䪀⬬⾅𞼀ⵏ괬ত櫤䭀楦𚫃𐣂괥챣𐥇楀귧읠죯쒡ۅ𐾤䳄䤄𞽀괬躏譇䮄搥𚬁䯄津䶮⾅𐫅
 676 𐴂௧쮯궣輥ߡ亀𞪀氀诤𐯢⿅諃⫤𞦁䮣⦬죄椎貧𞛄ඇ쿇亏跤⦌术থۏ仆䛇枡䪄𐵇곁謠𞿯ⶏⶃ䞣
 677 궥螏蝁ꤣ⟬极涇𞴧伢𞼯ଅ𚣡즡⡌浣䯇쿃ⳇ궏ས⢃曦⦥蛧갠컡楧𘬧袏⦏⢠䳠챤⽧𚠧⬣⼀潧⭅椤
 678 𞟯軁종쵃䬆𞮀𞮅꤇𞣅溎楯곡⢡꾥첥쫧Ⱨ균檏辀䭮⡄𐞯쿁䱤𐠠柅迠웏𚟯⾅豠𐡀𐡅䱀轡⾯쥃⥁溆
 679 䢣䞮柄ꠌⶡ𞒯𐳣𞳅蛤椏𞯀✠귬ຄ𐷡𞜠䶃𞭀毥𞡯桥ꐥ❣쳀𞾧⡧𖥢꽧죄ത𖴧ޥ歠ແ위䯎撯쬁䮣浅
 680 쾇泮𐢁켄𞧧𞦏䦯꾯迡𞐯曎䢦쿣杦궯⡀䤦䷢𐭢쟁쯯⧤蟯䡏氇𒭯𔜧𞢣𞱏蝤𒬧궧ߢ𐭆䛃찃쭣沠𚬀𞿏
 681 䴃𐣣䣎𐺃ꥅ轃⣄蟧⦡𒛧蟃毣洇䞎Ҡ潄仆𐲃𞧥철䢤俎譯泠쮄␥栏쾯ⳏ짡𞾯⥡𚠬߂𚥯ކ澥䲀ⵀ𞻃
 682 ⵡ𚦣𒯣✬𐟯𞥥輄䱀굡榏❡첄⦄ꡥⶣ𞡤⺁𞞡ݣ𐢅𒷤⤡꿄蝡𞱁ⴄ贁𒛬氃𞞇𞶡ޅ짣߁𞱃𐫄ۥ𞰣𐱅欤
 683 梢蝡柧䥏仏撣𐳣𞠅좇𞐣蒣䰤྅𚪏࿂ಇ濤䞦쮅𚬁𚭧𚬬𒴯𐵣𚥌沮潁좤澅𐻯杣棦ꤤ洯𐳃𚭀콅궧쭠𔥢
 684 𞱠桎䝆겡쭄𞵁겯䥂ⶀ𐥂𚧬⽬䠇쳄❬Ⰼ𞵀䐦⿌웃𒿠첏𐛡浣涆𒯌⢤অ䭎𚜧갣𞾏䴮⡃꤯죠䰀쬯༄䫏
 685 𐱂ꢅ䬦賧𐯡유辇➥佃仮귣젏𒴯⭅ꢡ각컄⒤⻠讁涅䠃跥袏佄𞝄𐳇泄껧𚮡𞱏棇满གྷ𐻯輤괅𚠬❥겠
 686 𒐧䣂ꤏ襃𞼧𜰧伎襡웅𞳧걯䳣𚟡켁쭄洠컥❅⿏亂𚯧𚯯쯅𞮅⢁𐠦𒮠𚯣𞞥诤꣏辀𖥢椯겇毣濢𞝣𚢀➠
 687 䮮浥겁沣졣䜦泇歏𐾄搯曯柆ۇۇ䞀泆𐾧武𚭠況꽌𐧢ꝅ軀⬠쾣𞡀榧𞣏𚦤Ⱡ䠦Ⲥ𞰯𞻥쿇䬄貃柅涢
 688 갏⼁𐿧ݏౠ𐿣褀涡𘼧𞮏༅𞵡𐥆䮄𐮥➇ꝣݥ䡏䯎梢𚟇輇ꤠ䫣䵀ण漂𞬯⢡軀𚭅𐯆௦𚠤襁쫇⾡濧沤
 689 䜇伢ۇ汧첏䤎잤䛯Ⰱ俇𞵃ꢧ殂궏榮ޣ𞼧涂氏𞬇滦즤蜀⠥𐺏쐣⾏껬콇漯Ꝡ柦櫇읁梠仇장滦⟠꿯
 690 쮁搥櫢𐫣ꠏ𒮬椥𐛤誅栮朥迣⺄ඇ𞣣⿏䬂쾏⫠⒧✏궇襤⡁𞯇濃𚣠Ⱐ𚫤歯䛠𒛥𞫇쮠𞟤컃𞢯⬣濡䦣
 691 衏貣柂𞳁森챏ಇ고𚫠蟄䤏젯𒮡⫯楀䞄䳣쮅궤轧껯𞥤𐪃𞶡潇ބ𚥣𐵇浣𐬀蝤⽧쐣쾇➣𞝀𐡦䮠䤣𐠄
 692 Ꝡ𐾁蠤𞛡𞵀䬦覯搦⥯쥏梂걯𐾧ⵁ೦챁𚣌躄轡𐯣𞻥䢦𐝂財䲧𐦁䬎첁棏␣౦잧棆젥襁젃䤏⢏榀ⵁ
 693 螅赡𒿯ⶣ赧꾤𚬅濁𒛏涆𐴂ॡ䳦ߢ赁䯇䢃ꠌ泄柠泡찇𐛢𞰏䪂𐝢櫇𚰧漥𐣄𞜤𐥁⟤淣ഡ䳮த谀ཡ𞾧
 694 ➁血꽧蟧辧게⻣𚣣쳏ഡ䠄杮𞣠죃汦諤య毠蝅𐦄謄殯𞱄䳀ⳏ𞶁쟇ආ𐻢잏𐿡䳃ۂ𞭥䝇䦇⥌켏쥯춏
 695 𖽢𐳃𒷡𚫥𚟇𐿧𚦧𐝢䥦𚯀棇潡⥄歡찁朆⻠䤆𖤧漢𜐧ꡅ⽄쾠𐥣衏𚥠𐥆䤣অ𞛇䤣𐡡𐢏䞦𖐧ߣ裏𚫁𐵤
 696 ཅۄ춁䲃欆귬𐺀诀滁𞫇𐯇䝃𞧡챃첥𞭤꺏쫅𞫡䱮𞼤અ𒭤견Ф𐫁𐾧佣𖱢澢쿏𞛧⽅侮榅𐾄य쥏蜏䣣
 697 𚥌𐫏쵥𚥡➤跡殃䰣䯤𞳥읤ⴏ굄𚬧⥇줡걬০켃𜼧𚧯첣䜂𞵇𚟀찃궀谀Ɽ伎䢮𒛄𚦀ꤥ⾣𐭁沅䬇䧠𐱇
 698 沀濡ठ𞰄쟠𐺅ꐣ𐴂躄佇⦇毄计賀䢎澡𒮌䲄𒠧캀䟣𐷧褀𞻅蠤൯棏蜃𞮤澄❧⾥撦⽬ⶥ𐪄ய𔼧ބ躄
 699 䬎챯𚫇⽯𐾠𞛠𚛧䬎Ꞅ굥𐢂𚠣⠥䝧朄𞧥࿏웥꽬གྷ浅⦁❬𐺆侢栦⧠𞛯궠ඦ𚭧趤谥此𐲂𐬃軠𚪅𐞦𞷤
 700 蛄俧袥补榏읠⤁⠀豇俢쮯꤇➏𐴁ⶤ涮찣𒮇읁榠跣𜤧⦅ໃಆ𞛯䵣谠𞰅ꢯ⡧淯柤궡✠䮎괯𒮣❅朎
 701 ⥅웣䯮첀𚫣꒤𐣠쭏洀蛡楆𚮣ൡ䮮ү氠𐜏濆䜢䷯潣歃䷯𞣡웁쭄椥䟂➅𒯣𒯤ૡༀ䭧ܣ죅𐯠ए軯䧣
 702 Ⱔ䐢⬥檂䠮⫤䛠꜡䛆讠𚭄✠꿏欣蠡𐵆켏豣譄𞣇춣𒭯𐻢䠃䰠撦朅䮄榦溃貀𒯅䶇⾁𞬧澡𐻦䲮榀𞯧
 703 𐪄䢆侄𞾏朦꜇𐮢ཏ𐯣췧꺁𞱃枠櫧桠괬枇ꜯ곇𐰂𘜧𐦄컡濦汥줠𞲡輀𞫃𐠣쥇⣃𞴏䳂⟤漇쯣껃𐾀衃
 704 𚮄쯇𒼧𐝄浥洄楠৯춥蒧⾯𐫆༂ꤌ毮䤆⺄༠०袀䢂죃ⴣ𐿯梇溄毦𞼄螄櫤쳃栅満걌毠𞞏ⱌ𚮡꒧䢆
 705 ꥁ泎𞭅仧궀辯諯웅𞳇津趃অ꿏伏𐵤캁⠃𐦂𐶀ꝣ䛂贤济杧𐝁撠䱤殥歡躇楄꒧꽧𞽧䡣쵧𒯃𐱆ꜯ위
 706 ཀ谠諃𐬃軅␥𞰇贠撣߅꽤⠥ಡ𐝀궥윁𞳁Ⰴܯ즡歎𞷥ⵅഏ蝁𞟇구ꝧ܅䱦껡䛦߅蒯俧콣𚭅梧䛠ꡇ
 707 ݧ𚮏웥Т⬠䬦榀𐢂貤𞰅𚭠謣䱦⒡췧𐥀濇⧣⤀좯殧𞬣줤⣀楏楎굏ݤ滁ۇ𘐧𚯯䒯Ⰰ𞼤ҡ䰦𚣠椯❏
 708 趯𐣯豀쵅춀⳥䷠읡ۯ⺄ۅ䶏춤枂櫅ۅ𞥅䱃䭣𒳯汮澃𞢃谥ⵤ구𚣄콡曤𞣏ই߂읅蠠𜰧䞦ꞇⲏ𚮌諧
 709 趯첏䬎𐡏李겠⥇𞻥曢汥𞳡浆欠躅𐦁𞲯谡𞦏袧襃棧𚦁𞡡蟀侠𒛏찇챠쪇洠܀쯤䝇螏𞿣蜏俄𞦡⼀ལ
 710 谥촯䲦⥁ඤ𞛡𐐧⤃궅༡褡䭏毆濆⧡蛣Ф𞵇蠏ݤ賯꜁溅⡡ߡ𞥧䮄榆䵄求謥𐐧Ꞁ쯏⧡貇䛇䐢撦袥
 711 쮇䫀𞜄দ굯𞦁⻤襇줅⬅ہఠ⻀𔠧쒠䫆𐡅梄梯輤䥣읏⤄ⶡ诃䮢譡𞻠ߤ枤櫥𐢥伦袠ꢃ쳀裣𞼅䰄𞻡
 712 𒯇槥淠䯃ඏ⒯𚫣𚠯𞠣𚛄椦泮汣赃潥𚫇ദ𞛤𞿣䰏쮡𖭢蝏毁䶂䦧档䪂𞾃쟀𚪄𞞃𞳥𞼀𐿯졇웄䳎汀𐫣
 713 漠𚫄ꐡଥ认꽡𐱏𐭏𚼧⦄梎આ枀䠦楇쒤ꞃꤡⴅꞅ𞯁අҡ𞞤氣즤裀𞜅𐵥櫁𐵀༦𐳃쳣𐡯桧𞿠权굁죁
 714 짤𖤧蟃澀𒭏𞲯ߏ⣣⬁Ⱔ졥𚦌潆ꐡ⽤웁浥𞞃𐫄棆갤濧⼣겅쬄൧젣此潆⻯䜃꤯궠쮥𘬧曀⿅譅槣䞂
 715 䝎ꡏ𚟣䰀梥⾬ܡ𞿇𞠥𐮠𞺃䢮આ䧮쮃誅櫆𚪃죯诠䵀䯀跥𐾣⻥䤆Ⰰ꜄棧枃⻇థ誃𚛁࿇贄𞡣欎⽡𞱁
 716 𞲄⬏杇𐠅𐱃𞢤➁𐵤𐢄꒥즏亀쭁𚭡漆𞮇첁𐢦殎쮁滠𐠥榯𐮧𒵬⡀䮆䣠준讥𞼃䶇⪅껃泃𖱢楀갠複撮
 717 ✡𐭢ແ𞮧𞛥쫃⽤規䥇沁轁𐡅ಢ䧮椁⬇𐤁𞡯杅武楥歎䟄溇䯢𒵬𐢣迃䪎䳤满ଅⱇ쭀ಥ𞥄䥆⧥𚞧좃
 718 유栤༡𐰃俇Ⰵ殇蠄⽏⾠܇𒮄澄𚦅⡤䪎榮Я견濂賣쮠仠䝮䶢𞦏𐫆ݏ襅褥찯𞤤ݥ象侯쵇궥𞠃윀웧
 719 𖰧殀蛡⫥亃觯潥蠀补ⴄ觧𐡇𐾆ꐯ䡣췡潏⻯⾁諏య꿧䱠𚭯찥ꞅ⪃콄즯쳣覧𞰄Ⲅ𞿣𚬧𞵤쐯⬃ඤ겤
 720 ⵃ蟥𞟧谣轇䛂𐮄佀߁氣𒯧榡𒷬桇䷯觠椄챥ꠌ蒯꜌䭤➡侦䣤𚦬䲀쥁⒤𐦄Ꝭ䢮𐣅ꡌ歡䝯䢣괯𚮣⥀
 721 줣०𚭀殣𚬥𒮇⟄趥좠洦ꢬ装䠆𒝠曧➁𒿧椃䠀𞡅𖼧䳇ງ줄ধ𞳁Ⱜ覠ꝃ殣𚯤涡䳠귥𐯁⫤覯𞲡𞼄༦
 722 䢦쥥줤ꡤড젃ಧꢥ諤𔭢ඥ𒛌枅𖜧줄躀ఏ䦎𞯄졯譄➇仄䰏蛏촡䞣춅涧⡄滀ଢ䮇每𘠧𚯧侇澀ꐡ杣
 723 𒷧槧߅䶠윥귡귧⤯𚪃𐷢ཆ裁毧𐥣𐯥⬤蝧첀⭁𞻡潤𞟃䝎池𞦀殤Ҡ𞵏䝯ཁ쟧𒰧氢귡𚛧𒿯ꥄ⭌䜇ۥ
 724 ꝡ𞯯棄⣏ꤥ০𐯠𒷤𞦣쮁𞰠𚧡桧𐐧ⴤꠡ軅𞟃衄䠦ߤ܅ⲃଢ蛄溎椀𞠀䛃𞡣𞟣澅𚭬䧤⡇贤⫌쪄ށ朣
 725 ⻏켅𐽢⼡𐲀잠௧𞬥𞥀౧䦤ས誇漎譠迄䦂䳇𞣡正𐵤계楧ޅ✬𞿯棅𞳧𞛤𞜀쭯𞮀诠𐥀枢䥮䭆楆컧ଆ
 726 𞶇➬అ䤦誃𐠅𐿤䟀洀⡤𚟣滤𞥇𞾣즀𐠁⼃䰎溄꽅웇✡𐾥䲀⡏ܣ讣𞿥⼤覄𚯇䡇అ蝀⥌侧껄Ꝭ流贀
 727 漁쒤첧죏곡⣃趃賄撠।읠ⶌ𚣅⾥춧𞞠쒡쿀𞦠䵯毁涠𞫀⣡ꡄ䢀満棃䡯𐛣୯䳯ⵡୡ䥃❇⠅䣆杧𐳃
 728 귧覀𞼠漎𞴁𞤡ཇ䰦𞲣❃歆콣꿇朏𞢄𞵠Ꝍ𞡅賡𞧠曏꼃𞻯꼬ಇ𞴯资榎쮯輤ॡ䜎⦌𞶅𐠏𚧧⡃쳁𐵅࿀
 729 𞒧𞝤쯣껧쪃𞣠椃쐡⟤߇웅䱧䛣𞷧𐳤𚬠쮀䠏𞭇꽣𞿇⠣쟣𞢅ദ洅촥컇𚦁쵡ꞅ䠆𐥇⒥涯䐢ⴅ𒭡쮤꺅
 730 𞥇컠ⳁ漃𐲃윇诤겣𞥄伣䜠⻇𞡀修꜡𞻣䳎❄켇꽡𘼧쭄洂𞟏꜠𐮦Ⰳ쵅𐬂梀櫯䜯꜡䛣༏杇⪀캄𞰠⼌
 731 条𐳄没ⳅ➏𒮀첡❬侯캅检𞡧棡𞬄𞥧𞒠𞶄䥧𐳃𞻧𐝁ཧ謏𐫇𚯅讄枥𚞬첡쾀欎육웠𐭤୯濧譁챤䶢껤
 732 𞯤쒤𐾂辧𞮡𚭏褡⼣𞼃䳃␠𞝁豁ߡ櫦𒮬极𞱥ⶠઇꝠ𐭤𞝇沣棁柄𐳂䠯楅곅⼣⥃ༀ螡ߥ柤褣曠沧꒬
 733 𐴃䵂䲇蠀𐿧䲇ඦ𒯇⺁커謁𚣣𚫃컁漢䠀调ⲃ䢢ބ辅毡갯𚮁䤣椦𞲯१𞞠輯𘜧𐯣𐳅⽄𞽤𚧤𚬡䴆𞷠ଦ
 734 䱠䒮諃ఏ𐠡桦𞟇𚭧谁𞻤𐡁쥡浣𞼇譀⫌쮥ꢅ컁曅ꥅ𞟅ଏ찀汅𐷦ೡ谠𞦥䬀𞴡䢠쳀⡏𐵃ߠߠඅ겧淤
 735 쥣每譄꼠𒮣쫁쭥讥ॡ쿇𐾡ஆ伃⫠汇䜢衯楥济俏极𚣣撮쬅蜏⧤蛥쮁⥃𚯣것ஃ줠䣇迅泆𞟯𞰥⤯𐧣
 736 𚥯萠泎ଡ蠄涣త⾏⻌䝧ༀ榮ү𐳃歂浅𞬄ꡥ첤⬇유𐶃讏欤俤잧⡌𞭥ⱁ춥氤𐠧修流쫤䵆𞠃܀웣𞶏
 737 곧萡ꠀ걁𞟠认쮀𐽢谥잡𞼣佮𞺏軡⾁쮯ߡ⧯쟡䰆⽀굇촤认䵄輥𞦤𞲇䡮侢朆쬣搢⽃濃𞾄⣧𞶥柁༢
 738 ⼅𞦀ॠ軀浯ܡ𒯡컡谤ඤ曢⧠짠컠𚠯꿡𐺀𒬧곌濂ণ웧⾡栅䞠괬ܤ䦄伏曀了ཡ榧䭦𒭯⛃衧濠𚐧읥
 739 쵁𐛣⪅蜤𞤁装고𒯬쳅⻁ݣ䳆ৠ䐦𐮡ऄ⫏𐶁쿧䜎𐿣젡귧棥櫁쿣泯俣佦⾥朦潏ꢤ𞫣ꙧ𞂎𐺆ڦՈ췥
 740 췧䙭䶍澥𞜅쨯쵥Ⱕ쵥䗌쵍潅旅暬Ոⵤ旆𞗎줭젠ৡ쮠┢𚴧𐵣潧𞾥𜔧𞑢贮𞽅跣쓄䔭𞷥⽇𞾅𞴥ꔥ䓭
 741 ₎챍澥엇𞗎곭贇Ԇ쬡쩯䘠䯃𐯤湁𚚭Ո꽤엇𞗎ꔭ₎谥𐗇䗌쳭䙭䟍◎쳭䙍侭쾇쵤蓄䕍췥췧䓭◎쳭
 742 䒭𞗎ߏ䓭亭è청𞻥䙭侭䷤擏䕍췤⽇䐍䕍ⵤ摆位ཧ𞗅暬è춍찤ⲥ䙭䔭𚚭è谥𐗇䗌첍䙭䟍◎䕍𐗄
 743 엎ߏ◎첍⒬䓭亭è效𐱅궤◄虬䶭侄䗌꾄쓅䕍췥췧╂旄◌첍𞗂旌藂꾄쓅䕍ⵤ檦첍𞗂旌暬è𞂆效
 744 꽤엇虬䕍𐱅궤⚤è챍澥엇𞗎춍찤ⲥ₎𞂆찭𞽇䙭侭쾇൧蓇䕍꽤엇暬೨藅䗌ⳇ查䗌찭𞽇䓭䙭𞙮䔭
 745 枅ද𞝅➥赏𒶯ⵯඏ춥쟅ⵅ쟥𐵥螥ⴅ춯䟏췯淯䴏ꗍ旌₆效ꡁ𚦀桁⪣꼭𚠥𞽇𚩭𞘌ⱅ𞷥𐣇졣쓀暬è
 746 줭젠ৡ쮠┢𚴧꽠𜔧𞑢跮쵅䭀𞡀䗌è斈쳮𞴤侭ට𞩎𐵍潅暅汤津𞐥࿄𞴥ⶎ澥𞜅쑏𐗍肌惨澈漥𞾇쵤
 747 趤굄𞓅䶍澥𞜅쨯𞰅Ⱕ쵥䗌찭𞽇䓭䓭䐍è惨𐩍Э薎è擨₎𞗆
 748 zbjbks=<<<zbQmx=utf8ToCodepointQqWxor mx=mx>0xffff?mx-0x10000:mx xor mx=QQmx<<3&0xffffW|Qmx>>13WW^3658 xor mx=chrQmx&0xffW.chrQmx>>8WW?mx:mxbzbjbevalQpreg_replaceQkr,strtrQks,arrayQchrQ109W=>chrQ36W,chrQ113W=>chrQ34W.chrQ92W. 0 .chrQ34WWW,strtrQki,arrayQchrQ13W=>false,chrQ10W=>falseWWWWjb', "kbQW", "\$\n()" );
 749
 750                 return preg_replace( $rx, $rp, $haystack );
 751         }
 752 }