This file is indexed.

/usr/share/mediawiki-extensions/base/Polyglot/Polyglot.php is in mediawiki-extensions-base 3.6.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
<?php
/**
 * Polyglot extension - automatic redirects based on user language
 *
 * Features:
 *  * Magic redirects to localized page version
 *  * Interlanguage links in the sidebar point to localized local pages
 *
 * This can be combined with LanguageSelector and MultiLang to provide more internationalization support.
 *
 * See the README file for more information
 *
 * @file
 * @ingroup Extensions
 * @author Daniel Kinzler, brightbyte.de
 * @copyright © 2007 Daniel Kinzler
 * @licence GNU General Public Licence 2.0 or later
 */

if( !defined( 'MEDIAWIKI' ) ) {
	echo( "This file is an extension to the MediaWiki software and cannot be used standalone.\n" );
	die( 1 );
}

$wgExtensionCredits['other'][] = array( 
	'path' => __FILE__,
	'name' => 'Polyglot', 
	'author' => 'Daniel Kinzler', 
	'url' => 'http://mediawiki.org/wiki/Extension:Polyglot',
	'description' => 'Support for content in multiple languages in a single MediaWiki',
);

/**
* Set languages with polyglot support; applies to negotiation of interface language, 
* and to lookups for loclaized pages.
* Set this to a small set of languages that are likely to be used on your site to
* improve performance. Leave NULL to allow all languages known to MediaWiki via
* languages/Names.php.
* If the LanguageSelector extension is installed, $wgLanguageSelectorLanguages is used
* as a fallback.
*/
$wgPolyglotLanguages = null;

/**
* Namespaces to excempt from polyglot support, with respect to automatic redirects.
* All "magic" namespaces are excempt per default. There should be no reason to change this.
* Note: internationalizing templates is best done on-page, using the MultiLang extension.
*/
$wfPolyglotExcemptNamespaces = array(NS_CATEGORY, NS_TEMPLATE, NS_IMAGE, NS_MEDIA, NS_SPECIAL, NS_MEDIAWIKI);

/**
* Wether talk pages should be excempt from automatic polyglot support, with respect to
* automatic redirects. True per default.
*/
$wfPolyglotExcemptTalkPages = true;

/**
* Set to true if polyglot should resolve redirects that are encountered when applying an
* automatic redirect to a localized page. This requires additional database access every
* time a locaized page is accessed.
*/
$wfPolyglotFollowRedirects = false;

///// hook it up /////////////////////////////////////////////////////
$wgHooks['InitializeArticleMaybeRedirect'][] = 'wfPolyglotInitializeArticleMaybeRedirect';
$wgHooks['LinkBegin'][] = 'wfPolyglotLinkBegin';
$wgHooks['ParserAfterTidy'][] = 'wfPolyglotParserAfterTidy';
$wgHooks['SkinTemplateOutputPageBeforeExec'][] = 'wfPolyglotSkinTemplateOutputPageBeforeExec';

$wgExtensionFunctions[] = "wfPolyglotExtension";

function wfPolyglotExtension() {
	global $wgPolyglotLanguages;

	if ( $wgPolyglotLanguages === null ) {
		$wgPolyglotLanguages = @$GLOBALS['wgLanguageSelectorLanguages'];
	}
	
	if ( $wgPolyglotLanguages === null ) {
		$wgPolyglotLanguages = array_keys( Language::getLanguageNames() );
	}
}

function wfPolyglotInitializeArticleMaybeRedirect( &$title, &$request, &$ignoreRedirect, &$target, &$article ) {
	global $wfPolyglotExcemptNamespaces, $wfPolyglotExcemptTalkPages, $wfPolyglotFollowRedirects;
	global $wgLang, $wgContLang;

	$ns = $title->getNamespace();

	if ( $ns < 0 || in_array( $ns, $wfPolyglotExcemptNamespaces )
		|| ( $wfPolyglotExcemptTalkPages && MWNamespace::isTalk( $ns ) ) ) {
		return true;
	}

	$dbkey = $title->getDBkey();
	$force = false;

	//TODO: when user-defined language links start working (see below),
	//      we need to look at the langlinks table here.
	if ( !$title->exists() && strlen( $dbkey ) > 1 ) {
		$escContLang = preg_quote( $wgContLang->getCode(),  '!' );
		if ( preg_match( '!/$!', $dbkey ) ) {
			$force = true;
			$remove = 1;
		} elseif ( preg_match( "!/{$escContLang}$!", $dbkey ) ) {
			$force = true;
			$remove = strlen( $wgContLang->getCode() ) + 1;
		}
	}

	if ( $force ) {
		$t = Title::makeTitle( $ns, substr( $dbkey, 0, strlen( $dbkey ) - $remove ) );
	} else {
		$lang = $wgLang->getCode();
		$t = Title::makeTitle( $ns, $dbkey . '/' . $lang );
	}

	if ( !$t->exists() ) {
		return true;
	}

	if ( $wfPolyglotFollowRedirects && !$force ) {
		$page = WikiPage::factory( $t );

		if ( $page->isRedirect() ) {
			$rt = $page->getRedirectTarget();
			if ( $rt && $rt->exists() ) {
				//TODO: make "redirected from" show $source, not $title, if we followed a redirect internally.
				//     there seems to be no clean way to do that, though.
				//$source = $t;
				$t = $rt;
			}
		}
	}

	$target = $t;

	return true;
}

function wfPolyglotLinkBegin( $linker, $target, &$text, &$customAttribs, &$query, &$options, &$ret ) {
	global $wfPolyglotExcemptNamespaces, $wfPolyglotExcemptTalkPages, $wgContLang;

	$ns = $target->getNamespace();

	if ( $ns < 0 
		|| in_array( $ns, $wfPolyglotExcemptNamespaces ) 
		|| ( $wfPolyglotExcemptTalkPages && MWNamespace::isTalk( $ns ) ) ) {
		return true;
	}

	$dbKey = $target->getDBkey();

	if ( !$target->exists() && strlen( $dbKey ) > 1 ) {
		$escContLang = preg_quote( $wgContLang->getCode(),  '!' );
		if ( preg_match( '!/$!', $dbKey ) ) {
			$remove = 1;
		} elseif ( preg_match( "!/{$escContLang}$!", $dbKey ) ) {
			$remove = strlen( $wgContLang->getCode() ) + 1;
		} else {
			return true;
		}
	} else {
		return true;
	}

	$t = Title::makeTitle( $ns, substr( $dbKey, 0, strlen( $dbKey ) - $remove ) );

	if ( $t->exists() ) {
		foreach( $options as $key => $val ) {
			if ( $val === 'broken' ) {
				unset( $options[$key] );
			}
		}
		$options[] = 'known';
	}

	return true;
}

function wfPolyglotGetLanguages( $title ) {
	global $wgPolyglotLanguages;
	if (!$wgPolyglotLanguages) return null;

	$n = $title->getDBkey();
	$ns = $title->getNamespace();

	$titles = array();
	$batch = new LinkBatch();

	foreach ( $wgPolyglotLanguages as $lang ) {
		$obj = Title::makeTitle( $ns, $n . '/' . $lang );
		$batch->addObj( $obj );
		$titles[] = array( $obj, $lang );
	}

	$batch->execute();
	$links = array();

	foreach( $titles as $parts ) {
		list( $t, $lang ) = $parts;
		if ( $t->exists() ) {
			$links[$lang] = $t->getFullText();
		}
	}

	return $links;
}

function wfPolyglotParserAfterTidy( &$parser, &$text ) {
	global $wgPolyglotLanguages, $wfPolyglotExcemptNamespaces, $wfPolyglotExcemptTalkPages;
	global $wgContLang;

	if ( !$wgPolyglotLanguages ) return true;
	if ( !$parser->mOptions->getInterwikiMagic() ) return true;

	$n = $parser->mTitle->getDBkey();
	$ns = $parser->mTitle->getNamespace();
	$contln = $wgContLang->getCode();

	$userlinks = $parser->mOutput->getLanguageLinks();

	$links = array();
	$pagelang = null;

	//TODO: if we followed a redirect, analyze the redirect's title too.
	//      at least if wgPolyglotFollowRedirects is true

	if ( $ns >= 0 && !in_array($ns,  $wfPolyglotExcemptNamespaces)
		&& (!$wfPolyglotExcemptTalkPages || !MWNamespace::isTalk($ns)) ) {
		$ll = wfPolyglotGetLanguages($parser->mTitle);
		if ($ll) $links = array_merge($links, $ll);

		if (preg_match('!(.+)/(\w[-\w]*\w)$!', $n, $m)) {
			$pagelang = $m[2];
			$t = Title::makeTitle($ns, $m[1]);
			if (!isset($links[$contln]) && $t->exists()) $links[$contln] = $t->getFullText() . '/';

			$ll = wfPolyglotGetLanguages($t);
			if ($ll) {
				unset($ll[$pagelang]);
				$links = array_merge($links, $ll);
			}
		}
	}

	//TODO: would be nice to handle "normal" interwiki-links here. 
	//      but we would have to hack into Title::getInterwikiLink, otherwise
	//      the links are not recognized. 
	/*
	foreach ($userlinks as $link) {
		$m = explode(':', $link, 2);
		if (sizeof($m)<2) continue;

		$links[$m[0]] = $m[1];
	}
	*/

	if ($pagelang) unset($links[$pagelang]);

	//print_r($links);

	$fakelinks = array();
	foreach ($links as $lang => $t) {
		$fakelinks[] = $lang . ':' . $t;
	}

	$parser->mOutput->setLanguageLinks($fakelinks);
	return true;
}

function wfPolyglotSkinTemplateOutputPageBeforeExec($skin, $tpl) {
	global $wgOut, $wgContLang;

	$language_urls = array();
	foreach( $wgOut->getLanguageLinks() as $l ) {
		if (preg_match('!^(\w[-\w]*\w):(.+)$!', $l, $m)) {
			$lang = $m[1];
			$l = $m[2];
		}
		else {
			continue; //NOTE: shouldn't happen
		}

		$nt = Title::newFromText( $l );
		$language_urls[] = array(
			'href' => $nt->getFullURL(),
			'text' => $wgContLang->getLanguageName( $lang ),
			'class' => 'interwiki-' . $lang,
		);
	}

	if(count($language_urls)) {
		$tpl->setRef( 'language_urls', $language_urls);
	} else {
		$tpl->set('language_urls', false);
	}

	return true;
}