summaryrefslogtreecommitdiff
path: root/includes/specials/SpecialVersion.php
blob: 8c8e386d110c3ba94ea2db24e3663b1d5cd6fe98 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
<?php
/**#@+
 * Give information about the version of MediaWiki, PHP, the DB and extensions
 *
 * @file
 * @ingroup SpecialPage
 *
 * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
 * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
 */

/**
 * constructor
 */
function wfSpecialVersion() {
	$version = new SpecialVersion;
	$version->execute();
}

/**
 * @ingroup SpecialPage
 */
class SpecialVersion {
	private $firstExtOpened = true;

	/**
	 * main()
	 */
	function execute() {
		global $wgOut, $wgMessageCache, $wgSpecialVersionShowHooks;
		$wgMessageCache->loadAllMessages();

		$wgOut->addHTML( '<div dir="ltr">' );
		$text = 
			$this->MediaWikiCredits() .
			$this->softwareInformation() .
			$this->extensionCredits();
		if  ( $wgSpecialVersionShowHooks ) {
			$text .= $this->wgHooks();
		}
		$wgOut->addWikiText( $text );
		$wgOut->addHTML( $this->IPInfo() );
		$wgOut->addHTML( '</div>' );
	}

	/**#@+
	 * @private
	 */

	/**
	 * @return wiki text showing the license information
	 */
	static function MediaWikiCredits() {
		$ret = Xml::element( 'h2', array( 'id' => 'mw-version-license' ), wfMsg( 'version-license' ) ) .
		"__NOTOC__
		This wiki is powered by '''[http://www.mediawiki.org/ MediaWiki]''',
		copyright (C) 2001-2008 Magnus Manske, Brion Vibber, Lee Daniel Crocker,
		Tim Starling, Erik Möller, Gabriel Wicke, Ævar Arnfjörð Bjarmason,
		Niklas Laxström, Domas Mituzas, Rob Church, Yuri Astrakhan, Aryeh Gregor,
		Aaron Schulz and others.

		MediaWiki is free software; you can redistribute it and/or modify
		it under the terms of the GNU General Public License as published by
		the Free Software Foundation; either version 2 of the License, or
		(at your option) any later version.

		MediaWiki is distributed in the hope that it will be useful,
		but WITHOUT ANY WARRANTY; without even the implied warranty of
		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
		GNU General Public License for more details.

		You should have received [{{SERVER}}{{SCRIPTPATH}}/COPYING a copy of the GNU General Public License]
		along with this program; if not, write to the Free Software
		Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
		or [http://www.gnu.org/licenses/old-licenses/gpl-2.0.html read it online].
		";

		return str_replace( "\t\t", '', $ret ) . "\n";
	}

	/**
	 * @return wiki text showing the third party software versions (apache, php, mysql).
	 */
	static function softwareInformation() {
		$dbr = wfGetDB( DB_SLAVE );

		return Xml::element( 'h2', array( 'id' => 'mw-version-software' ), wfMsg( 'version-software' ) ) .
			Xml::openElement( 'table', array( 'id' => 'sv-software' ) ) .
				"<tr>
					<th>" . wfMsg( 'version-software-product' ) . "</th>
					<th>" . wfMsg( 'version-software-version' ) . "</th>
				</tr>\n
				<tr>
					<td>[http://www.mediawiki.org/ MediaWiki]</td>
					<td>" . self::getVersionLinked() . "</td>
				</tr>\n
				<tr>
					<td>[http://www.php.net/ PHP]</td>
					<td>" . phpversion() . " (" . php_sapi_name() . ")</td>
				</tr>\n
				<tr>
					<td>" . $dbr->getSoftwareLink() . "</td>
					<td>" . $dbr->getServerVersion() . "</td>
				</tr>\n" .
			Xml::closeElement( 'table' );
	}

	/**
	 * Return a string of the MediaWiki version with SVN revision if available
	 *
	 * @return mixed
	 */
	public static function getVersion() {
		global $wgVersion, $IP;
		wfProfileIn( __METHOD__ );
		$svn = self::getSvnRevision( $IP );
		$version = $svn ? "$wgVersion (r$svn)" : $wgVersion;
		wfProfileOut( __METHOD__ );
		return $version;
	}
	
	/**
	 * Return a string of the MediaWiki version with a link to SVN revision if
	 * available
	 *
	 * @return mixed
	 */
	public static function getVersionLinked() {
		global $wgVersion, $IP;
		wfProfileIn( __METHOD__ );
		$svn = self::getSvnRevision( $IP );
		$viewvc = 'http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/?pathrev=';
		$version = $svn ? "$wgVersion ([{$viewvc}{$svn} r$svn])" : $wgVersion;
		wfProfileOut( __METHOD__ );
		return $version;
	}

	/** Generate wikitext showing extensions name, URL, author and description */
	function extensionCredits() {
		global $wgExtensionCredits, $wgExtensionFunctions, $wgParser, $wgSkinExtensionFunctions;

		if ( ! count( $wgExtensionCredits ) && ! count( $wgExtensionFunctions ) && ! count( $wgSkinExtensionFunctions ) )
			return '';

		$extensionTypes = array(
			'specialpage' => wfMsg( 'version-specialpages' ),
			'parserhook' => wfMsg( 'version-parserhooks' ),
			'variable' => wfMsg( 'version-variables' ),
			'media' => wfMsg( 'version-mediahandlers' ),
			'other' => wfMsg( 'version-other' ),
		);
		wfRunHooks( 'SpecialVersionExtensionTypes', array( &$this, &$extensionTypes ) );

		$out = Xml::element( 'h2', array( 'id' => 'mw-version-ext' ), wfMsg( 'version-extensions' ) ) .
			Xml::openElement( 'table', array( 'id' => 'sv-ext' ) );

		foreach ( $extensionTypes as $type => $text ) {
			if ( isset ( $wgExtensionCredits[$type] ) && count ( $wgExtensionCredits[$type] ) ) {
				$out .= $this->openExtType( $text );

				usort( $wgExtensionCredits[$type], array( $this, 'compare' ) );

				foreach ( $wgExtensionCredits[$type] as $extension ) {
					if ( isset( $extension['version'] ) ) {
						$version = $extension['version'];
					} elseif ( isset( $extension['svn-revision'] ) && 
						preg_match( '/\$(?:Rev|LastChangedRevision|Revision): *(\d+)/', 
							$extension['svn-revision'], $m ) ) 
					{
						$version = 'r' . $m[1];
					} else {
						$version = null;
					}

					$out .= $this->formatCredits(
						isset ( $extension['name'] )           ? $extension['name']        : '',
						$version,
						isset ( $extension['author'] )         ? $extension['author']      : '',
						isset ( $extension['url'] )            ? $extension['url']         : null,
						isset ( $extension['description'] )    ? $extension['description'] : '',
						isset ( $extension['descriptionmsg'] ) ? $extension['descriptionmsg'] : ''
					);
				}
			}
		}

		if ( count( $wgExtensionFunctions ) ) {
			$out .= $this->openExtType( wfMsg( 'version-extension-functions' ) );
			$out .= '<tr><td colspan="3">' . $this->listToText( $wgExtensionFunctions ) . "</td></tr>\n";
		}

		if ( $cnt = count( $tags = $wgParser->getTags() ) ) {
			for ( $i = 0; $i < $cnt; ++$i )
				$tags[$i] = "&lt;{$tags[$i]}&gt;";
			$out .= $this->openExtType( wfMsg( 'version-parser-extensiontags' ) );
			$out .= '<tr><td colspan="3">' . $this->listToText( $tags ). "</td></tr>\n";
		}

		if( $cnt = count( $fhooks = $wgParser->getFunctionHooks() ) ) {
			$out .= $this->openExtType( wfMsg( 'version-parser-function-hooks' ) );
			$out .= '<tr><td colspan="3">' . $this->listToText( $fhooks ) . "</td></tr>\n";
		}

		if ( count( $wgSkinExtensionFunctions ) ) {
			$out .= $this->openExtType( wfMsg( 'version-skin-extension-functions' ) );
			$out .= '<tr><td colspan="3">' . $this->listToText( $wgSkinExtensionFunctions ) . "</td></tr>\n";
		}
		$out .= Xml::closeElement( 'table' );
		return $out;
	}

	/** Callback to sort extensions by type */
	function compare( $a, $b ) {
		global $wgLang;
		if( $a['name'] === $b['name'] ) {
			return 0;
		} else {
			return $wgLang->lc( $a['name'] ) > $wgLang->lc( $b['name'] )
				? 1
				: -1;
		}
	}

	function formatCredits( $name, $version = null, $author = null, $url = null, $description = null, $descriptionMsg = null ) {
		$extension = isset( $url ) ? "[$url $name]" : $name;
		$version = isset( $version ) ? "(" . wfMsg( 'version-version' ) . " $version)" : '';

		# Look for a localized description
		if( isset( $descriptionMsg ) ) {
			$msg = wfMsg( $descriptionMsg );
			if ( !wfEmptyMsg( $descriptionMsg, $msg ) && $msg != '' ) {
				$description = $msg;
			}
		}

		return "<tr>
				<td><em>$extension $version</em></td>
				<td>$description</td>
				<td>" . $this->listToText( (array)$author ) . "</td>
			</tr>\n";
	}

	/**
	 * @return string
	 */
	function wgHooks() {
		global $wgHooks;

		if ( count( $wgHooks ) ) {
			$myWgHooks = $wgHooks;
			ksort( $myWgHooks );

			$ret = Xml::element( 'h2', array( 'id' => 'mw-version-hooks' ), wfMsg( 'version-hooks' ) ) .
				Xml::openElement( 'table', array( 'id' => 'sv-hooks' ) ) .
				"<tr>
					<th>" . wfMsg( 'version-hook-name' ) . "</th>
					<th>" . wfMsg( 'version-hook-subscribedby' ) . "</th>
				</tr>\n";

			foreach ( $myWgHooks as $hook => $hooks )
				$ret .= "<tr>
						<td>$hook</td>
						<td>" . $this->listToText( $hooks ) . "</td>
					</tr>\n";

			$ret .= Xml::closeElement( 'table' );
			return $ret;
		} else
			return '';
	}

	private function openExtType($text, $name = null) {
		$opt = array( 'colspan' => 3 );
		$out = '';

		if(!$this->firstExtOpened) {
			// Insert a spacing line
			$out .= '<tr class="sv-space">' . Xml::element( 'td', $opt ) . "</tr>\n";
		}
		$this->firstExtOpened = false;

		if($name) { $opt['id'] = "sv-$name"; }

		$out .= "<tr>" . Xml::element( 'th', $opt, $text) . "</tr>\n";
		return $out;
	}

	/**
	 * @static
	 *
	 * @return string
	 */
	function IPInfo() {
		$ip =  str_replace( '--', ' - ', htmlspecialchars( wfGetIP() ) );
		return "<!-- visited from $ip -->\n" .
			"<span style='display:none'>visited from $ip</span>";
	}

	/**
	 * @param array $list
	 * @return string
	 */
	function listToText( $list ) {
		$cnt = count( $list );

		if ( $cnt == 1 ) {
			// Enforce always returning a string
			return (string)$this->arrayToString( $list[0] );
		} elseif ( $cnt == 0 ) {
			return '';
		} else {
			sort( $list );
			$t = array_slice( $list, 0, $cnt - 1 );
			$one = array_map( array( &$this, 'arrayToString' ), $t );
			$two = $this->arrayToString( $list[$cnt - 1] );
			$and = wfMsg( 'and' );

			return implode( ', ', $one ) . " $and $two";
		}
	}

	/**
	 * @static
	 *
	 * @param mixed $list Will convert an array to string if given and return
	 *                    the paramater unaltered otherwise
	 * @return mixed
	 */
	function arrayToString( $list ) {
		if( is_object( $list ) ) {
			$class = get_class( $list );
			return "($class)";
		} elseif ( ! is_array( $list ) ) {
			return $list;
		} else {
			$class = get_class( $list[0] );
			return "($class, {$list[1]})";
		}
	}

	/**
	 * Retrieve the revision number of a Subversion working directory.
	 *
	 * @param string $dir
	 * @return mixed revision number as int, or false if not a SVN checkout
	 */
	public static function getSvnRevision( $dir ) {
		// http://svnbook.red-bean.com/nightly/en/svn.developer.insidewc.html
		$entries = $dir . '/.svn/entries';

		if( !file_exists( $entries ) ) {
			return false;
		}

		$content = file( $entries );

		// check if file is xml (subversion release <= 1.3) or not (subversion release = 1.4)
		if( preg_match( '/^<\?xml/', $content[0] ) ) {
			// subversion is release <= 1.3
			if( !function_exists( 'simplexml_load_file' ) ) {
				// We could fall back to expat... YUCK
				return false;
			}

			// SimpleXml whines about the xmlns...
			wfSuppressWarnings();
			$xml = simplexml_load_file( $entries );
			wfRestoreWarnings();

			if( $xml ) {
				foreach( $xml->entry as $entry ) {
					if( $xml->entry[0]['name'] == '' ) {
						// The directory entry should always have a revision marker.
						if( $entry['revision'] ) {
							return intval( $entry['revision'] );
						}
					}
				}
			}
			return false;
		} else {
			// subversion is release 1.4
			return intval( $content[3] );
		}
	}

	/**#@-*/
}

/**#@-*/