MediaWikiTitleCodec::getTitleInvalidRegex() - Code Metrics - Inspection of "Daily Inspection: Merge "mediawiki.jqueryMsg: Fix..." - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (bb6f05)

unknown

created 2016-05-13 17:26 UTC

MediaWikiTitleCodec::getTitleInvalidRegex() A

↳ Parent: MediaWikiTitleCodec

Complexity

Conditions	2
Paths	2

Size

Total Lines	19
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Metric	Value
dl	0
loc	19
rs	9.4285
cc	2
eloc	11
nc	2
nop	0

<?php
/**
 * A codec for %MediaWiki page titles.
 *
 * This program 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.
 *
 * This program 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 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.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @license GPL 2+
 * @author Daniel Kinzler
 */
use MediaWiki\Linker\LinkTarget;

/**
 * A codec for %MediaWiki page titles.
 *
 * @note Normalization and validation is applied while parsing, not when formatting.
 * It's possible to construct a TitleValue with an invalid title, and use MediaWikiTitleCodec
 * to generate an (invalid) title string from it. TitleValues should be constructed only
 * via parseTitle() or from a (semi)trusted source, such as the database.
 *
 * @see https://www.mediawiki.org/wiki/Requests_for_comment/TitleValue
 * @since 1.23
 */
class MediaWikiTitleCodec implements TitleFormatter, TitleParser {
	/**
	 * @var Language
	 */
	protected $language;

	/**
	 * @var GenderCache
	 */
	protected $genderCache;

	/**
	 * @var string[]
	 */
	protected $localInterwikis;

	/**
	 * @param Language $language The language object to use for localizing namespace names.
	 * @param GenderCache $genderCache The gender cache for generating gendered namespace names
	 * @param string[]|string $localInterwikis
	 */
	public function __construct( Language $language, GenderCache $genderCache,
		$localInterwikis = []
	) {
		$this->language = $language;
		$this->genderCache = $genderCache;
		$this->localInterwikis = (array)$localInterwikis;
	}

	/**
	 * @see TitleFormatter::getNamespaceName()
	 *
	 * @param int $namespace
	 * @param string $text
	 *
	 * @throws InvalidArgumentException If the namespace is invalid
	 * @return string
	 */
	public function getNamespaceName( $namespace, $text ) {
		if ( $this->language->needsGenderDistinction() &&
			MWNamespace::hasGenderDistinction( $namespace )
		) {

			// NOTE: we are assuming here that the title text is a user name!
			$gender = $this->genderCache->getGenderOf( $text, __METHOD__ );
			$name = $this->language->getGenderNsText( $namespace, $gender );
		} else {
			$name = $this->language->getNsText( $namespace );
		}

		if ( $name === false ) {
			throw new InvalidArgumentException( 'Unknown namespace ID: ' . $namespace );
		}

		return $name;
	}

	/**
	 * @see TitleFormatter::formatTitle()
	 *
	 * @param int|bool $namespace The namespace ID (or false, if the namespace should be ignored)
	 * @param string $text The page title. Should be valid. Only minimal normalization is applied.
	 *        Underscores will be replaced.
	 * @param string $fragment The fragment name (may be empty).
	 * @param string $interwiki The interwiki name (may be empty).
	 *
	 * @throws InvalidArgumentException If the namespace is invalid
	 * @return string
	 */
	public function formatTitle( $namespace, $text, $fragment = '', $interwiki = '' ) {
		if ( $namespace !== false ) {
			$namespace = $this->getNamespaceName( $namespace, $text );
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

			if ( $namespace !== '' ) {
				$text = $namespace . ':' . $text;
			}
		}

		if ( $fragment !== '' ) {
			$text = $text . '#' . $fragment;
		}

		if ( $interwiki !== '' ) {
			$text = $interwiki . ':' . $text;
		}

		$text = str_replace( '_', ' ', $text );

		return $text;
	}

	/**
	 * Parses the given text and constructs a TitleValue. Normalization
	 * is applied according to the rules appropriate for the form specified by $form.
	 *
	 * @param string $text The text to parse
	 * @param int $defaultNamespace Namespace to assume per default (usually NS_MAIN)
	 *
	 * @throws MalformedTitleException
	 * @return TitleValue
	 */
	public function parseTitle( $text, $defaultNamespace ) {
		// NOTE: this is an ugly cludge that allows this class to share the
		// code for parsing with the old Title class. The parser code should
		// be refactored to avoid this.
		$parts = $this->splitTitleString( $text, $defaultNamespace );

		// Relative fragment links are not supported by TitleValue
		if ( $parts['dbkey'] === '' ) {
			throw new MalformedTitleException( 'title-invalid-empty', $text );
		}

		return new TitleValue(
			$parts['namespace'],
			$parts['dbkey'],
			$parts['fragment'],
			$parts['interwiki']
		);
	}

	/**
	 * @see TitleFormatter::getText()
	 *
	 * @param LinkTarget $title
	 *
	 * @return string $title->getText()
	 */
	public function getText( LinkTarget $title ) {
		return $this->formatTitle( false, $title->getText(), '' );
	}

	/**
	 * @see TitleFormatter::getText()
	 *
	 * @param LinkTarget $title
	 *
	 * @return string
	 */
	public function getPrefixedText( LinkTarget $title ) {
		return $this->formatTitle(
			$title->getNamespace(),
			$title->getText(),
			'',
			$title->getInterwiki()
		);
	}

	/**
	 * @since 1.27
	 * @see TitleFormatter::getPrefixedDBkey()
	 * @param LinkTarget $target
	 * @return string
	 */
	public function getPrefixedDBkey( LinkTarget $target ) {
		$key = '';
		if ( $target->isExternal() ) {
			$key .= $target->getInterwiki() . ':';
		}
		// Try to get a namespace name, but fallback
		// to empty string if it doesn't exist
		try {
			$nsName = $this->getNamespaceName(
				$target->getNamespace(),
				$target->getText()
			);
		} catch ( InvalidArgumentException $e ) {
			$nsName = '';
		}

		if ( $target->getNamespace() !== 0 ) {
			$key .= $nsName . ':';
		}

		$key .= $target->getText();

		return strtr( $key, ' ', '_' );
	}

	/**
	 * @see TitleFormatter::getText()
	 *
	 * @param LinkTarget $title
	 *
	 * @return string
	 */
	public function getFullText( LinkTarget $title ) {
		return $this->formatTitle(
			$title->getNamespace(),
			$title->getText(),
			$title->getFragment(),
			$title->getInterwiki()
		);
	}

	/**
	 * Normalizes and splits a title string.
	 *
	 * This function removes illegal characters, splits off the interwiki and
	 * namespace prefixes, sets the other forms, and canonicalizes
	 * everything.
	 *
	 * @todo this method is only exposed as a temporary measure to ease refactoring.
	 * It was copied with minimal changes from Title::secureAndSplit().
	 *
	 * @todo This method should be split up and an appropriate interface
	 * defined for use by the Title class.
	 *
	 * @param string $text
	 * @param int $defaultNamespace
	 *
	 * @throws MalformedTitleException If $text is not a valid title string.
	 * @return array A map with the fields 'interwiki', 'fragment', 'namespace',
	 *         'user_case_dbkey', and 'dbkey'.
	 */
	public function splitTitleString( $text, $defaultNamespace = NS_MAIN ) {
		$dbkey = str_replace( ' ', '_', $text );

		# Initialisation
		$parts = [
			'interwiki' => '',
			'local_interwiki' => false,
			'fragment' => '',
			'namespace' => $defaultNamespace,
			'dbkey' => $dbkey,
			'user_case_dbkey' => $dbkey,
		];

		# Strip Unicode bidi override characters.
		# Sometimes they slip into cut-n-pasted page titles, where the
		# override chars get included in list displays.
		$dbkey = preg_replace( '/\xE2\x80[\x8E\x8F\xAA-\xAE]/S', '', $dbkey );

		# Clean up whitespace
		# Note: use of the /u option on preg_replace here will cause
		# input with invalid UTF-8 sequences to be nullified out in PHP 5.2.x,
		# conveniently disabling them.
		$dbkey = preg_replace(
			'/[ _\xA0\x{1680}\x{180E}\x{2000}-\x{200A}\x{2028}\x{2029}\x{202F}\x{205F}\x{3000}]+/u',
			'_',
			$dbkey
		);
		$dbkey = trim( $dbkey, '_' );

		if ( strpos( $dbkey, UtfNormal\Constants::UTF8_REPLACEMENT ) !== false ) {
			# Contained illegal UTF-8 sequences or forbidden Unicode chars.
			throw new MalformedTitleException( 'title-invalid-utf8', $text );
		}

		$parts['dbkey'] = $dbkey;

		# Initial colon indicates main namespace rather than specified default
		# but should not create invalid {ns,title} pairs such as {0,Project:Foo}
		if ( $dbkey !== '' && ':' == $dbkey[0] ) {
			$parts['namespace'] = NS_MAIN;
			$dbkey = substr( $dbkey, 1 ); # remove the colon but continue processing
			$dbkey = trim( $dbkey, '_' ); # remove any subsequent whitespace
		}

		if ( $dbkey == '' ) {
			throw new MalformedTitleException( 'title-invalid-empty', $text );
		}

		# Namespace or interwiki prefix
		$prefixRegexp = "/^(.+?)_*:_*(.*)$/S";
		do {
			$m = [];
			if ( preg_match( $prefixRegexp, $dbkey, $m ) ) {
				$p = $m[1];
				$ns = $this->language->getNsIndex( $p );
				if ( $ns !== false ) {
					# Ordinary namespace
					$dbkey = $m[2];
					$parts['namespace'] = $ns;
					# For Talk:X pages, check if X has a "namespace" prefix
					if ( $ns == NS_TALK && preg_match( $prefixRegexp, $dbkey, $x ) ) {
						if ( $this->language->getNsIndex( $x[1] ) ) {
							# Disallow Talk:File:x type titles...
							throw new MalformedTitleException( 'title-invalid-talk-namespace', $text );
						} elseif ( Interwiki::isValidInterwiki( $x[1] ) ) {
							// TODO: get rid of global state!
							# Disallow Talk:Interwiki:x type titles...
							throw new MalformedTitleException( 'title-invalid-talk-namespace', $text );
						}
					}
				} elseif ( Interwiki::isValidInterwiki( $p ) ) {
					# Interwiki link
					$dbkey = $m[2];
					$parts['interwiki'] = $this->language->lc( $p );

					# Redundant interwiki prefix to the local wiki
					foreach ( $this->localInterwikis as $localIW ) {
						if ( 0 == strcasecmp( $parts['interwiki'], $localIW ) ) {
							if ( $dbkey == '' ) {
								# Empty self-links should point to the Main Page, to ensure
								# compatibility with cross-wiki transclusions and the like.
								$mainPage = Title::newMainPage();
								return [
									'interwiki' => $mainPage->getInterwiki(),
									'local_interwiki' => true,
									'fragment' => $mainPage->getFragment(),
									'namespace' => $mainPage->getNamespace(),
									'dbkey' => $mainPage->getDBkey(),
									'user_case_dbkey' => $mainPage->getUserCaseDBKey()
								];
							}
							$parts['interwiki'] = '';
							# local interwikis should behave like initial-colon links
							$parts['local_interwiki'] = true;

							# Do another namespace split...
							continue 2;
						}
					}

					# If there's an initial colon after the interwiki, that also
					# resets the default namespace
					if ( $dbkey !== '' && $dbkey[0] == ':' ) {
						$parts['namespace'] = NS_MAIN;
						$dbkey = substr( $dbkey, 1 );
					}
				}
				# If there's no recognized interwiki or namespace,
				# then let the colon expression be part of the title.
			}
			break;
		} while ( true );

		$fragment = strstr( $dbkey, '#' );
		if ( false !== $fragment ) {
			$parts['fragment'] = str_replace( '_', ' ', substr( $fragment, 1 ) );
			$dbkey = substr( $dbkey, 0, strlen( $dbkey ) - strlen( $fragment ) );
			# remove whitespace again: prevents "Foo_bar_#"
			# becoming "Foo_bar_"
			$dbkey = preg_replace( '/_*$/', '', $dbkey );
		}

		# Reject illegal characters.
		$rxTc = self::getTitleInvalidRegex();
		$matches = [];
		if ( preg_match( $rxTc, $dbkey, $matches ) ) {
			throw new MalformedTitleException( 'title-invalid-characters', $text, [ $matches[0] ] );
		}

		# Pages with "/./" or "/../" appearing in the URLs will often be un-
		# reachable due to the way web browsers deal with 'relative' URLs.
		# Also, they conflict with subpage syntax.  Forbid them explicitly.
		if (
			strpos( $dbkey, '.' ) !== false &&
			(
				$dbkey === '.' || $dbkey === '..' ||
				strpos( $dbkey, './' ) === 0 ||
				strpos( $dbkey, '../' ) === 0 ||
				strpos( $dbkey, '/./' ) !== false ||
				strpos( $dbkey, '/../' ) !== false ||
				substr( $dbkey, -2 ) == '/.' ||
				substr( $dbkey, -3 ) == '/..'
			)
		) {
			throw new MalformedTitleException( 'title-invalid-relative', $text );
		}

		# Magic tilde sequences? Nu-uh!
		if ( strpos( $dbkey, '~~~' ) !== false ) {
			throw new MalformedTitleException( 'title-invalid-magic-tilde', $text );
		}

		# Limit the size of titles to 255 bytes. This is typically the size of the
		# underlying database field. We make an exception for special pages, which
		# don't need to be stored in the database, and may edge over 255 bytes due
		# to subpage syntax for long titles, e.g. [[Special:Block/Long name]]
		$maxLength = ( $parts['namespace'] != NS_SPECIAL ) ? 255 : 512;
		if ( strlen( $dbkey ) > $maxLength ) {
			throw new MalformedTitleException( 'title-invalid-too-long', $text,
				[ Message::numParam( $maxLength ) ] );
		}

		# Normally, all wiki links are forced to have an initial capital letter so [[foo]]
		# and [[Foo]] point to the same place.  Don't force it for interwikis, since the
		# other site might be case-sensitive.
		$parts['user_case_dbkey'] = $dbkey;
		if ( $parts['interwiki'] === '' ) {
			$dbkey = Title::capitalize( $dbkey, $parts['namespace'] );
		}

		# Can't make a link to a namespace alone... "empty" local links can only be
		# self-links with a fragment identifier.
		if ( $dbkey == '' && $parts['interwiki'] === '' ) {
			if ( $parts['namespace'] != NS_MAIN ) {
				throw new MalformedTitleException( 'title-invalid-empty', $text );
			}
		}

		// Allow IPv6 usernames to start with '::' by canonicalizing IPv6 titles.
		// IP names are not allowed for accounts, and can only be referring to
		// edits from the IP. Given '::' abbreviations and caps/lowercaps,
		// there are numerous ways to present the same IP. Having sp:contribs scan
		// them all is silly and having some show the edits and others not is
		// inconsistent. Same for talk/userpages. Keep them normalized instead.
		if ( $parts['namespace'] == NS_USER || $parts['namespace'] == NS_USER_TALK ) {
			$dbkey = IP::sanitizeIP( $dbkey );
		}

		// Any remaining initial :s are illegal.
		if ( $dbkey !== '' && ':' == $dbkey[0] ) {
			throw new MalformedTitleException( 'title-invalid-leading-colon', $text );
		}

		# Fill fields
		$parts['dbkey'] = $dbkey;

		return $parts;
	}

	/**
	 * Returns a simple regex that will match on characters and sequences invalid in titles.
	 * Note that this doesn't pick up many things that could be wrong with titles, but that
	 * replacing this regex with something valid will make many titles valid.
	 * Previously Title::getTitleInvalidRegex()
	 *
	 * @return string Regex string
	 * @since 1.25
	 */
	public static function getTitleInvalidRegex() {
		static $rxTc = false;
		if ( !$rxTc ) {
			# Matching titles will be held as illegal.
			$rxTc = '/' .
				# Any character not allowed is forbidden...
				'[^' . Title::legalChars() . ']' .
				# URL percent encoding sequences interfere with the ability
				# to round-trip titles -- you can't link to them consistently.
				'|%[0-9A-Fa-f]{2}' .
				# XML/HTML character references produce similar issues.
				'|&[A-Za-z0-9\x80-\xff]+;' .
				'|&#[0-9]+;' .
				'|&#x[0-9A-Fa-f]+;' .
				'/S';
		}

		return $rxTc;
	}
}


1		<?php
2		/**
3		* A codec for %MediaWiki page titles.
4		*
5		* This program is free software; you can redistribute it and/or modify
6		* it under the terms of the GNU General Public License as published by
7		* the Free Software Foundation; either version 2 of the License, or
8		* (at your option) any later version.
9		*
10		* This program is distributed in the hope that it will be useful,
11		* but WITHOUT ANY WARRANTY; without even the implied warranty of
12		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13		* GNU General Public License for more details.
14		*
15		* You should have received a copy of the GNU General Public License along
16		* with this program; if not, write to the Free Software Foundation, Inc.,
17		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18		* http://www.gnu.org/copyleft/gpl.html
19		*
20		* @file
21		* @license GPL 2+
22		* @author Daniel Kinzler
23		*/
24		use MediaWiki\Linker\LinkTarget;
25
26		/**
27		* A codec for %MediaWiki page titles.
28		*
29		* @note Normalization and validation is applied while parsing, not when formatting.
30		* It's possible to construct a TitleValue with an invalid title, and use MediaWikiTitleCodec
31		* to generate an (invalid) title string from it. TitleValues should be constructed only
32		* via parseTitle() or from a (semi)trusted source, such as the database.
33		*
34		* @see https://www.mediawiki.org/wiki/Requests_for_comment/TitleValue
35		* @since 1.23
36		*/
37		class MediaWikiTitleCodec implements TitleFormatter, TitleParser {
38		/**
39		* @var Language
40		*/
41		protected $language;
42
43		/**
44		* @var GenderCache
45		*/
46		protected $genderCache;
47
48		/**
49		* @var string[]
50		*/
51		protected $localInterwikis;
52
53		/**
54		* @param Language $language The language object to use for localizing namespace names.
55		* @param GenderCache $genderCache The gender cache for generating gendered namespace names
56		* @param string[]\|string $localInterwikis
57		*/
58		public function __construct( Language $language, GenderCache $genderCache,
59		$localInterwikis = []
60		) {
61		$this->language = $language;
62		$this->genderCache = $genderCache;
63		$this->localInterwikis = (array)$localInterwikis;
64		}
65
66		/**
67		* @see TitleFormatter::getNamespaceName()
68		*
69		* @param int $namespace
70		* @param string $text
71		*
72		* @throws InvalidArgumentException If the namespace is invalid
73		* @return string
74		*/
75		public function getNamespaceName( $namespace, $text ) {
76		if ( $this->language->needsGenderDistinction() &&
77		MWNamespace::hasGenderDistinction( $namespace )
78		) {
79
80		// NOTE: we are assuming here that the title text is a user name!
81		$gender = $this->genderCache->getGenderOf( $text, __METHOD__ );
82		$name = $this->language->getGenderNsText( $namespace, $gender );
83		} else {
84		$name = $this->language->getNsText( $namespace );
85		}
86
87		if ( $name === false ) {
88		throw new InvalidArgumentException( 'Unknown namespace ID: ' . $namespace );
89		}
90
91		return $name;
92		}
93
94		/**
95		* @see TitleFormatter::formatTitle()
96		*
97		* @param int\|bool $namespace The namespace ID (or false, if the namespace should be ignored)
98		* @param string $text The page title. Should be valid. Only minimal normalization is applied.
99		* Underscores will be replaced.
100		* @param string $fragment The fragment name (may be empty).
101		* @param string $interwiki The interwiki name (may be empty).
102		*
103		* @throws InvalidArgumentException If the namespace is invalid
104		* @return string
105		*/
106		public function formatTitle( $namespace, $text, $fragment = '', $interwiki = '' ) {
107		if ( $namespace !== false ) {
108		$namespace = $this->getNamespaceName( $namespace, $text );
		0 ignored issues – show Bug introduced 2016-02-23 18:13 UTC by Report Bug Copy Issue Report It seems like `$namespace` defined by `$this->getNamespaceName($namespace, $text)` on line `108` can also be of type `boolean`; however, `MediaWikiTitleCodec::getNamespaceName()` does only seem to accept `integer`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
109
110		if ( $namespace !== '' ) {
111		$text = $namespace . ':' . $text;
112		}
113		}
114
115		if ( $fragment !== '' ) {
116		$text = $text . '#' . $fragment;
117		}
118
119		if ( $interwiki !== '' ) {
120		$text = $interwiki . ':' . $text;
121		}
122
123		$text = str_replace( '_', ' ', $text );
124
125		return $text;
126		}
127
128		/**
129		* Parses the given text and constructs a TitleValue. Normalization
130		* is applied according to the rules appropriate for the form specified by $form.
131		*
132		* @param string $text The text to parse
133		* @param int $defaultNamespace Namespace to assume per default (usually NS_MAIN)
134		*
135		* @throws MalformedTitleException
136		* @return TitleValue
137		*/
138		public function parseTitle( $text, $defaultNamespace ) {
139		// NOTE: this is an ugly cludge that allows this class to share the
140		// code for parsing with the old Title class. The parser code should
141		// be refactored to avoid this.
142		$parts = $this->splitTitleString( $text, $defaultNamespace );
143
144		// Relative fragment links are not supported by TitleValue
145		if ( $parts['dbkey'] === '' ) {
146		throw new MalformedTitleException( 'title-invalid-empty', $text );
147		}
148
149		return new TitleValue(
150		$parts['namespace'],
151		$parts['dbkey'],
152		$parts['fragment'],
153		$parts['interwiki']
154		);
155		}
156
157		/**
158		* @see TitleFormatter::getText()
159		*
160		* @param LinkTarget $title
161		*
162		* @return string $title->getText()
163		*/
164		public function getText( LinkTarget $title ) {
165		return $this->formatTitle( false, $title->getText(), '' );
166		}
167
168		/**
169		* @see TitleFormatter::getText()
170		*
171		* @param LinkTarget $title
172		*
173		* @return string
174		*/
175		public function getPrefixedText( LinkTarget $title ) {
176		return $this->formatTitle(
177		$title->getNamespace(),
178		$title->getText(),
179		'',
180		$title->getInterwiki()
181		);
182		}
183
184		/**
185		* @since 1.27
186		* @see TitleFormatter::getPrefixedDBkey()
187		* @param LinkTarget $target
188		* @return string
189		*/
190		public function getPrefixedDBkey( LinkTarget $target ) {
191		$key = '';
192		if ( $target->isExternal() ) {
193		$key .= $target->getInterwiki() . ':';
194		}
195		// Try to get a namespace name, but fallback
196		// to empty string if it doesn't exist
197		try {
198		$nsName = $this->getNamespaceName(
199		$target->getNamespace(),
200		$target->getText()
201		);
202		} catch ( InvalidArgumentException $e ) {
203		$nsName = '';
204		}
205
206		if ( $target->getNamespace() !== 0 ) {
207		$key .= $nsName . ':';
208		}
209
210		$key .= $target->getText();
211
212		return strtr( $key, ' ', '_' );
213		}
214
215		/**
216		* @see TitleFormatter::getText()
217		*
218		* @param LinkTarget $title
219		*
220		* @return string
221		*/
222		public function getFullText( LinkTarget $title ) {
223		return $this->formatTitle(
224		$title->getNamespace(),
225		$title->getText(),
226		$title->getFragment(),
227		$title->getInterwiki()
228		);
229		}
230
231		/**
232		* Normalizes and splits a title string.
233		*
234		* This function removes illegal characters, splits off the interwiki and
235		* namespace prefixes, sets the other forms, and canonicalizes
236		* everything.
237		*
238		* @todo this method is only exposed as a temporary measure to ease refactoring.
239		* It was copied with minimal changes from Title::secureAndSplit().
240		*
241		* @todo This method should be split up and an appropriate interface
242		* defined for use by the Title class.
243		*
244		* @param string $text
245		* @param int $defaultNamespace
246		*
247		* @throws MalformedTitleException If $text is not a valid title string.
248		* @return array A map with the fields 'interwiki', 'fragment', 'namespace',
249		* 'user_case_dbkey', and 'dbkey'.
250		*/
251		public function splitTitleString( $text, $defaultNamespace = NS_MAIN ) {
252		$dbkey = str_replace( ' ', '_', $text );
253
254		# Initialisation
255		$parts = [
256		'interwiki' => '',
257		'local_interwiki' => false,
258		'fragment' => '',
259		'namespace' => $defaultNamespace,
260		'dbkey' => $dbkey,
261		'user_case_dbkey' => $dbkey,
262		];
263
264		# Strip Unicode bidi override characters.
265		# Sometimes they slip into cut-n-pasted page titles, where the
266		# override chars get included in list displays.
267		$dbkey = preg_replace( '/\xE2\x80[\x8E\x8F\xAA-\xAE]/S', '', $dbkey );
268
269		# Clean up whitespace
270		# Note: use of the /u option on preg_replace here will cause
271		# input with invalid UTF-8 sequences to be nullified out in PHP 5.2.x,
272		# conveniently disabling them.
273		$dbkey = preg_replace(
274		'/[ _\xA0\x{1680}\x{180E}\x{2000}-\x{200A}\x{2028}\x{2029}\x{202F}\x{205F}\x{3000}]+/u',
275		'_',
276		$dbkey
277		);
278		$dbkey = trim( $dbkey, '_' );
279
280		if ( strpos( $dbkey, UtfNormal\Constants::UTF8_REPLACEMENT ) !== false ) {
281		# Contained illegal UTF-8 sequences or forbidden Unicode chars.
282		throw new MalformedTitleException( 'title-invalid-utf8', $text );
283		}
284
285		$parts['dbkey'] = $dbkey;
286
287		# Initial colon indicates main namespace rather than specified default
288		# but should not create invalid {ns,title} pairs such as {0,Project:Foo}
289	View Code Duplication	if ( $dbkey !== '' && ':' == $dbkey[0] ) {
290		$parts['namespace'] = NS_MAIN;
291		$dbkey = substr( $dbkey, 1 ); # remove the colon but continue processing
292		$dbkey = trim( $dbkey, '_' ); # remove any subsequent whitespace
293		}
294
295		if ( $dbkey == '' ) {
296		throw new MalformedTitleException( 'title-invalid-empty', $text );
297		}
298
299		# Namespace or interwiki prefix
300		$prefixRegexp = "/^(.+?)_:_(.*)$/S";
301		do {
302		$m = [];
303		if ( preg_match( $prefixRegexp, $dbkey, $m ) ) {
304		$p = $m[1];
305		$ns = $this->language->getNsIndex( $p );
306		if ( $ns !== false ) {
307		# Ordinary namespace
308		$dbkey = $m[2];
309		$parts['namespace'] = $ns;
310		# For Talk:X pages, check if X has a "namespace" prefix
311		if ( $ns == NS_TALK && preg_match( $prefixRegexp, $dbkey, $x ) ) {
312		if ( $this->language->getNsIndex( $x[1] ) ) {
313		# Disallow Talk:File:x type titles...
314		throw new MalformedTitleException( 'title-invalid-talk-namespace', $text );
315		} elseif ( Interwiki::isValidInterwiki( $x[1] ) ) {
316		// TODO: get rid of global state!
317		# Disallow Talk:Interwiki:x type titles...
318		throw new MalformedTitleException( 'title-invalid-talk-namespace', $text );
319		}
320		}
321		} elseif ( Interwiki::isValidInterwiki( $p ) ) {
322		# Interwiki link
323		$dbkey = $m[2];
324		$parts['interwiki'] = $this->language->lc( $p );
325
326		# Redundant interwiki prefix to the local wiki
327		foreach ( $this->localInterwikis as $localIW ) {
328		if ( 0 == strcasecmp( $parts['interwiki'], $localIW ) ) {
329		if ( $dbkey == '' ) {
330		# Empty self-links should point to the Main Page, to ensure
331		# compatibility with cross-wiki transclusions and the like.
332		$mainPage = Title::newMainPage();
333		return [
334		'interwiki' => $mainPage->getInterwiki(),
335		'local_interwiki' => true,
336		'fragment' => $mainPage->getFragment(),
337		'namespace' => $mainPage->getNamespace(),
338		'dbkey' => $mainPage->getDBkey(),
339		'user_case_dbkey' => $mainPage->getUserCaseDBKey()
340		];
341		}
342		$parts['interwiki'] = '';
343		# local interwikis should behave like initial-colon links
344		$parts['local_interwiki'] = true;
345
346		# Do another namespace split...
347		continue 2;
348		}
349		}
350
351		# If there's an initial colon after the interwiki, that also
352		# resets the default namespace
353	View Code Duplication	if ( $dbkey !== '' && $dbkey[0] == ':' ) {
354		$parts['namespace'] = NS_MAIN;
355		$dbkey = substr( $dbkey, 1 );
356		}
357		}
358		# If there's no recognized interwiki or namespace,
359		# then let the colon expression be part of the title.
360		}
361		break;
362		} while ( true );
363
364		$fragment = strstr( $dbkey, '#' );
365		if ( false !== $fragment ) {
366		$parts['fragment'] = str_replace( '_', ' ', substr( $fragment, 1 ) );
367		$dbkey = substr( $dbkey, 0, strlen( $dbkey ) - strlen( $fragment ) );
368		# remove whitespace again: prevents "Foo_bar_#"
369		# becoming "Foo_bar_"
370		$dbkey = preg_replace( '/_*$/', '', $dbkey );
371		}
372
373		# Reject illegal characters.
374		$rxTc = self::getTitleInvalidRegex();
375		$matches = [];
376		if ( preg_match( $rxTc, $dbkey, $matches ) ) {
377		throw new MalformedTitleException( 'title-invalid-characters', $text, [ $matches[0] ] );
378		}
379
380		# Pages with "/./" or "/../" appearing in the URLs will often be un-
381		# reachable due to the way web browsers deal with 'relative' URLs.
382		# Also, they conflict with subpage syntax. Forbid them explicitly.
383	View Code Duplication	if (
384		strpos( $dbkey, '.' ) !== false &&
385		(
386		$dbkey === '.' \|\| $dbkey === '..' \|\|
387		strpos( $dbkey, './' ) === 0 \|\|
388		strpos( $dbkey, '../' ) === 0 \|\|
389		strpos( $dbkey, '/./' ) !== false \|\|
390		strpos( $dbkey, '/../' ) !== false \|\|
391		substr( $dbkey, -2 ) == '/.' \|\|
392		substr( $dbkey, -3 ) == '/..'
393		)
394		) {
395		throw new MalformedTitleException( 'title-invalid-relative', $text );
396		}
397
398		# Magic tilde sequences? Nu-uh!
399		if ( strpos( $dbkey, '~~~' ) !== false ) {
400		throw new MalformedTitleException( 'title-invalid-magic-tilde', $text );
401		}
402
403		# Limit the size of titles to 255 bytes. This is typically the size of the
404		# underlying database field. We make an exception for special pages, which
405		# don't need to be stored in the database, and may edge over 255 bytes due
406		# to subpage syntax for long titles, e.g. [[Special:Block/Long name]]
407		$maxLength = ( $parts['namespace'] != NS_SPECIAL ) ? 255 : 512;
408		if ( strlen( $dbkey ) > $maxLength ) {
409		throw new MalformedTitleException( 'title-invalid-too-long', $text,
410		[ Message::numParam( $maxLength ) ] );
411		}
412
413		# Normally, all wiki links are forced to have an initial capital letter so [[foo]]
414		# and [[Foo]] point to the same place. Don't force it for interwikis, since the
415		# other site might be case-sensitive.
416		$parts['user_case_dbkey'] = $dbkey;
417		if ( $parts['interwiki'] === '' ) {
418		$dbkey = Title::capitalize( $dbkey, $parts['namespace'] );
419		}
420
421		# Can't make a link to a namespace alone... "empty" local links can only be
422		# self-links with a fragment identifier.
423		if ( $dbkey == '' && $parts['interwiki'] === '' ) {
424		if ( $parts['namespace'] != NS_MAIN ) {
425		throw new MalformedTitleException( 'title-invalid-empty', $text );
426		}
427		}
428
429		// Allow IPv6 usernames to start with '::' by canonicalizing IPv6 titles.
430		// IP names are not allowed for accounts, and can only be referring to
431		// edits from the IP. Given '::' abbreviations and caps/lowercaps,
432		// there are numerous ways to present the same IP. Having sp:contribs scan
433		// them all is silly and having some show the edits and others not is
434		// inconsistent. Same for talk/userpages. Keep them normalized instead.
435		if ( $parts['namespace'] == NS_USER \|\| $parts['namespace'] == NS_USER_TALK ) {
436		$dbkey = IP::sanitizeIP( $dbkey );
437		}
438
439		// Any remaining initial :s are illegal.
440		if ( $dbkey !== '' && ':' == $dbkey[0] ) {
441		throw new MalformedTitleException( 'title-invalid-leading-colon', $text );
442		}
443
444		# Fill fields
445		$parts['dbkey'] = $dbkey;
446
447		return $parts;
448		}
449
450		/**
451		* Returns a simple regex that will match on characters and sequences invalid in titles.
452		* Note that this doesn't pick up many things that could be wrong with titles, but that
453		* replacing this regex with something valid will make many titles valid.
454		* Previously Title::getTitleInvalidRegex()
455		*
456		* @return string Regex string
457		* @since 1.25
458		*/
459		public static function getTitleInvalidRegex() {
460		static $rxTc = false;
461		if ( !$rxTc ) {
462		# Matching titles will be held as illegal.
463		$rxTc = '/' .
464		# Any character not allowed is forbidden...
465		'[^' . Title::legalChars() . ']' .
466		# URL percent encoding sequences interfere with the ability
467		# to round-trip titles -- you can't link to them consistently.
468		'\|%[0-9A-Fa-f]{2}' .
469		# XML/HTML character references produce similar issues.
470		'\|&[A-Za-z0-9\x80-\xff]+;' .
471		'\|&#[0-9]+;' .
472		'\|&#x[0-9A-Fa-f]+;' .
473		'/S';
474		}
475
476		return $rxTc;
477		}
478		}
479

wikimedia / mediawiki

Branch — master (bb6f05)

MediaWikiTitleCodec::getTitleInvalidRegex() A

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