includes/SpecialVersion.php

   1 <?php
   2 /**#@+
   3  * Give information about the version of MediaWiki, PHP, the DB and extensions
   4  *
   5  * @addtogroup SpecialPage
   6  *
   7  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
   8  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
   9  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  10  */
  11
  12 /**
  13  * constructor
  14  */
  15 function wfSpecialVersion() {
  16         $version = new SpecialVersion;
  17         $version->execute();
  18 }
  19
  20 class SpecialVersion {
  21         private $firstExtOpened = true;
  22
  23         /**
  24          * main()
  25          */
  26         function execute() {
  27                 global $wgOut;
  28
  29                 $wgOut->addHTML( '<div dir="ltr">' );
  30                 $wgOut->addWikiText(
  31                         $this->MediaWikiCredits() .
  32                         $this->extensionCredits() .
  33                         $this->wgHooks()
  34                 );
  35                 $wgOut->addHTML( $this->IPInfo() );
  36                 $wgOut->addHTML( '</div>' );
  37         }
  38
  39         /**#@+
  40          * @private
  41          */
  42
  43         /**
  44          * Return wiki text showing the licence information and third party
  45          * software versions (apache, php, mysql).
  46          * @static
  47          */
  48         function MediaWikiCredits() {
  49                 $version = self::getVersion();
  50                 $dbr = wfGetDB( DB_SLAVE );
  51
  52                 $ret =
  53                 "__NOTOC__
  54                 This wiki is powered by '''[http://www.mediawiki.org/ MediaWiki]''',
  55                 copyright (C) 2001-2007 Magnus Manske, Brion Vibber, Lee Daniel Crocker,
  56                 Tim Starling, Erik Möller, Gabriel Wicke, Ævar Arnfjörð Bjarmason,
  57                 Niklas Laxström, Domas Mituzas, Rob Church and others.
  58
  59                 MediaWiki is free software; you can redistribute it and/or modify
  60                 it under the terms of the GNU General Public License as published by
  61                 the Free Software Foundation; either version 2 of the License, or
  62                 (at your option) any later version.
  63
  64                 MediaWiki is distributed in the hope that it will be useful,
  65                 but WITHOUT ANY WARRANTY; without even the implied warranty of
  66                 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  67                 GNU General Public License for more details.
  68
  69                 You should have received [{{SERVER}}{{SCRIPTPATH}}/COPYING a copy of the GNU General Public License]
  70                 along with this program; if not, write to the Free Software
  71                 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  72                 or [http://www.gnu.org/copyleft/gpl.html read it online]
  73
  74                 * [http://www.mediawiki.org/ MediaWiki]: $version
  75                 * [http://www.php.net/ PHP]: " . phpversion() . " (" . php_sapi_name() . ")
  76                 * " . $dbr->getSoftwareLink() . ": " . $dbr->getServerVersion();
  77
  78                 return str_replace( "\t\t", '', $ret ) . "\n";
  79         }
  80
  81         /** Return a string of the MediaWiki version with SVN revision if available */
  82         public static function getVersion() {
  83                 global $wgVersion, $IP;
  84                 $svn = self::getSvnRevision( $IP );
  85                 return $svn ? "$wgVersion (r$svn)" : $wgVersion;
  86         }
  87
  88         /** Generate wikitext showing extensions name, URL, author and description */
  89         function extensionCredits() {
  90                 global $wgExtensionCredits, $wgExtensionFunctions, $wgParser, $wgSkinExtensionFunction;
  91
  92                 if ( ! count( $wgExtensionCredits ) && ! count( $wgExtensionFunctions ) && ! count( $wgSkinExtensionFunction ) )
  93                         return '';
  94
  95                 $extensionTypes = array(
  96                         'specialpage' => 'Special pages',
  97                         'parserhook' => 'Parser hooks',
  98                         'variable' => 'Variables',
  99                         'other' => 'Other',
 100                 );
 101                 wfRunHooks( 'SpecialVersionExtensionTypes', array( &$this, &$extensionTypes ) );
 102
 103                 $out = "<h2>Extensions</h2>\n";
 104                 $out .= wfOpenElement('table', array('id' => 'sv-ext') );
 105
 106                 foreach ( $extensionTypes as $type => $text ) {
 107                         if ( isset ( $wgExtensionCredits[$type] ) && count ( $wgExtensionCredits[$type] ) ) {
 108                                 $out .= $this->openExtType( $text );
 109
 110                                 usort( $wgExtensionCredits[$type], array( $this, 'compare' ) );
 111
 112                                 foreach ( $wgExtensionCredits[$type] as $extension ) {
 113                                         $out .= $this->formatCredits(
 114                                                 isset ( $extension['name'] )        ? $extension['name']        : '',
 115                                                 isset ( $extension['version'] )     ? $extension['version']     : null,
 116                                                 isset ( $extension['author'] )      ? $extension['author']      : '',
 117                                                 isset ( $extension['url'] )         ? $extension['url']         : null,
 118                                                 isset ( $extension['description'] ) ? $extension['description'] : ''
 119                                         );
 120                                 }
 121                         }
 122                 }
 123
 124                 if ( count( $wgExtensionFunctions ) ) {
 125                         $out .= $this->openExtType('Extension functions');
 126                         $out .= '<tr><td colspan="3">' . $this->listToText( $wgExtensionFunctions ) . "</td></tr>\n";
 127                 }
 128
 129                 if ( $cnt = count( $tags = $wgParser->getTags() ) ) {
 130                         for ( $i = 0; $i < $cnt; ++$i )
 131                                 $tags[$i] = "&lt;{$tags[$i]}&gt;";
 132                         $out .= $this->openExtType('Parser extension tags');
 133                         $out .= '<tr><td colspan="3">' . $this->listToText( $tags ). "</td></tr>\n";
 134                 }
 135
 136                 if( $cnt = count( $fhooks = $wgParser->getFunctionHooks() ) ) {
 137                         $out .= $this->openExtType('Parser function hooks');
 138                         $out .= '<tr><td colspan="3">' . $this->listToText( $fhooks ) . "</td></tr>\n";
 139                 }
 140
 141                 if ( count( $wgSkinExtensionFunction ) ) {
 142                         $out .= $this->openExtType('Skin extension functions');
 143                         $out .= '<tr><td colspan="3">' . $this->listToText( $wgSkinExtensionFunction ) . "</td></tr>\n";
 144                 }
 145                 $out .= wfCloseElement( 'table' );
 146                 return $out;
 147         }
 148
 149         /** Callback to sort extensions by type */
 150         function compare( $a, $b ) {
 151                 if ( $a['name'] === $b['name'] )
 152                         return 0;
 153                 else
 154                         return Language::lc( $a['name'] ) > Language::lc( $b['name'] ) ? 1 : -1;
 155         }
 156
 157         function formatCredits( $name, $version = null, $author = null, $url = null, $description = null) {
 158                 $ret = '<tr><td>';
 159                 if ( isset( $url ) )
 160                         $ret .= "[$url ";
 161                 $ret .= "''$name";
 162                 if ( isset( $version ) )
 163                         $ret .= " (version $version)";
 164                 $ret .= "''";
 165                 if ( isset( $url ) )
 166                         $ret .= ']';
 167                 $ret .= '</td>';
 168                 $ret .= "<td>$description</td>";
 169                 $ret .= "<td>" . $this->listToText( (array)$author ) . "</td>";
 170                 $ret .= '</tr>';
 171                 return "$ret\n";
 172         }
 173
 174         /**
 175          * @return string
 176          */
 177         function wgHooks() {
 178                 global $wgHooks;
 179
 180                 if ( count( $wgHooks ) ) {
 181                         $myWgHooks = $wgHooks;
 182                         ksort( $myWgHooks );
 183
 184                         $ret = "<h2>Hooks</h2>\n"
 185                                 . wfOpenElement('table', array('id' => 'sv-hooks') )
 186                                 . "<tr><th>Hook name</th><th>Subscribed by</th></tr>\n";
 187
 188                         foreach ($myWgHooks as $hook => $hooks)
 189                                 $ret .= "<tr><td>$hook</td><td>" . $this->listToText( $hooks ) . "</td></tr>\n";
 190
 191                         $ret .= '</table>';
 192                         return $ret;
 193                 } else
 194                         return '';
 195         }
 196
 197         private function openExtType($text, $name = null) {
 198                 $opt = array( 'colspan' => 3 );
 199                 $out = '';
 200
 201                 if(!$this->firstExtOpened) {
 202                         // Insert a spacing line
 203                         $out .= '<tr class="sv-space">' . wfElement( 'td', $opt ) . "</tr>\n";
 204                 }
 205                 $this->firstExtOpened = false;
 206
 207                 if($name) { $opt['id'] = "sv-$name"; }
 208
 209                 $out .= "<tr>" . wfElement( 'th', $opt, $text) . "</tr>\n";
 210                 return $out;
 211         }
 212
 213         /**
 214          * @static
 215          *
 216          * @return string
 217          */
 218         function IPInfo() {
 219                 $ip =  str_replace( '--', ' - ', htmlspecialchars( wfGetIP() ) );
 220                 return "<!-- visited from $ip -->\n" .
 221                         "<span style='display:none'>visited from $ip</span>";
 222         }
 223
 224         /**
 225          * @param array $list
 226          * @return string
 227          */
 228         function listToText( $list ) {
 229                 $cnt = count( $list );
 230
 231             if ( $cnt == 1 ) {
 232                         // Enforce always returning a string
 233                         return (string)$this->arrayToString( $list[0] );
 234             } elseif ( $cnt == 0 ) {
 235                         return '';
 236                 } else {
 237                         $t = array_slice( $list, 0, $cnt - 1 );
 238                         $one = array_map( array( &$this, 'arrayToString' ), $t );
 239                         $two = $this->arrayToString( $list[$cnt - 1] );
 240
 241                         return implode( ', ', $one ) . " and $two";
 242             }
 243         }
 244
 245         /**
 246          * @static
 247          *
 248          * @param mixed $list Will convert an array to string if given and return
 249          *                    the paramater unaltered otherwise
 250          * @return mixed
 251          */
 252         function arrayToString( $list ) {
 253                 if( is_object( $list ) ) {
 254                         $class = get_class( $list );
 255                         return "($class)";
 256                 } elseif ( ! is_array( $list ) ) {
 257                         return $list;
 258                 } else {
 259                         $class = get_class( $list[0] );
 260                         return "($class, {$list[1]})";
 261                 }
 262         }
 263
 264         /**
 265          * Retrieve the revision number of a Subversion working directory.
 266          *
 267          * @param string $dir
 268          * @return mixed revision number as int, or false if not a SVN checkout
 269          */
 270         public static function getSvnRevision( $dir ) {
 271                 // http://svnbook.red-bean.com/nightly/en/svn.developer.insidewc.html
 272                 $entries = $dir . '/.svn/entries';
 273
 274                 if( !file_exists( $entries ) ) {
 275                         return false;
 276                 }
 277
 278                 $content = file( $entries );
 279
 280                 // check if file is xml (subversion release <= 1.3) or not (subversion release = 1.4)
 281                 if( preg_match( '/^<\?xml/', $content[0] ) ) {
 282                         // subversion is release <= 1.3
 283                         if( !function_exists( 'simplexml_load_file' ) ) {
 284                                 // We could fall back to expat... YUCK
 285                                 return false;
 286                         }
 287
 288                         // SimpleXml whines about the xmlns...
 289                         wfSuppressWarnings();
 290                         $xml = simplexml_load_file( $entries );
 291                         wfRestoreWarnings();
 292
 293                         if( $xml ) {
 294                                 foreach( $xml->entry as $entry ) {
 295                                         if( $xml->entry[0]['name'] == '' ) {
 296                                                 // The directory entry should always have a revision marker.
 297                                                 if( $entry['revision'] ) {
 298                                                         return intval( $entry['revision'] );
 299                                                 }
 300                                         }
 301                                 }
 302                         }
 303                         return false;
 304                 } else {
 305                         // subversion is release 1.4
 306                         return intval( $content[3] );
 307                 }
 308         }
 309
 310         /**#@-*/
 311 }
 312
 313 /**#@-*/
 314