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| <?php | |
| /** | |
| * AntiSpoof.php | |
| * Username spoofing prevention for MediaWiki | |
| * Version 0.04 | |
| * | |
| * Copyright (C) Neil Harris 2006 | |
| * Python->PHP conversion by Brion Vibber <brion@pobox.com> | |
| * | |
| * 2006-06-30 Handles non-CJK scripts as per UTR #39 + my extensions | |
| * 2006-07-01 Now handles Simplified <-> Traditional Chinese rules, as | |
| * per JET Guidelines for Internationalized Domain Names, | |
| * and the ICANN language registry values for .cn | |
| * 2006-09-14 Now handles 'rn' etc better, and uses stdin for input | |
| * 2006-09-18 Added exception handling for nasty cases, eg BiDi violations | |
| * 2006-09-19 Converted to PHP for easier integration into a MW extension | |
| * | |
| * 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 St, Fifth Floor, Boston, MA 02110-1301 | |
| * USA | |
| */ | |
| namespace MediaWiki\Extension\AntiSpoof; | |
| use MWException; | |
| use Status; | |
| use UtfNormal\Utils; | |
| use UtfNormal\Validator; | |
| use Wikimedia\Equivset\Equivset; | |
| class AntiSpoof { | |
| private const SCRIPT_DEPRECATED = 'DEPRECATED'; | |
| private const SCRIPT_UNASSIGNED = 'UNASSIGNED'; | |
| private const SCRIPT_ARABIC = 'ARABIC'; | |
| private const SCRIPT_ARMENIAN = 'ARMENIAN'; | |
| private const SCRIPT_ASCII_DIGITS = 'ASCII_DIGITS'; | |
| private const SCRIPT_ASCII_PUNCTUATION = 'ASCII_PUNCTUATION'; | |
| private const SCRIPT_BENGALI = 'BENGALI'; | |
| private const SCRIPT_BOPOMOFO = 'BOPOMOFO'; | |
| private const SCRIPT_BUGINESE = 'BUGINESE'; | |
| private const SCRIPT_BUHID = 'BUHID'; | |
| private const SCRIPT_CANADIAN_ABORIGINAL = 'CANADIAN_ABORIGINAL'; | |
| private const SCRIPT_CHEROKEE = 'CHEROKEE'; | |
| private const SCRIPT_COMBINING_MARKS = 'COMBINING_MARKS'; | |
| private const SCRIPT_COPTIC = 'COPTIC'; | |
| private const SCRIPT_COPTIC_EXTRAS = 'COPTIC_EXTRAS'; | |
| private const SCRIPT_CYPRIOT = 'CYPRIOT'; | |
| private const SCRIPT_CYRILLIC = 'CYRILLIC'; | |
| private const SCRIPT_DESERET = 'DESERET'; | |
| private const SCRIPT_DEVANAGARI = 'DEVANAGARI'; | |
| private const SCRIPT_ETHIOPIC = 'ETHIOPIC'; | |
| private const SCRIPT_GEORGIAN = 'GEORGIAN'; | |
| private const SCRIPT_GLAGOLITIC = 'GLAGOLITIC'; | |
| private const SCRIPT_GOTHIC = 'GOTHIC'; | |
| private const SCRIPT_GREEK = 'GREEK'; | |
| private const SCRIPT_GUJARATI = 'GUJARATI'; | |
| private const SCRIPT_GURMUKHI = 'GURMUKHI'; | |
| private const SCRIPT_HAN = 'HAN'; | |
| private const SCRIPT_HANGUL = 'HANGUL'; | |
| private const SCRIPT_HANUNOO = 'HANUNOO'; | |
| private const SCRIPT_HEBREW = 'HEBREW'; | |
| private const SCRIPT_HIRAGANA = 'HIRAGANA'; | |
| private const SCRIPT_KANNADA = 'KANNADA'; | |
| private const SCRIPT_KATAKANA = 'KATAKANA'; | |
| private const SCRIPT_KHAROSHTHI = 'KHAROSHTHI'; | |
| private const SCRIPT_KHMER = 'KHMER'; | |
| private const SCRIPT_LAO = 'LAO'; | |
| private const SCRIPT_LATIN = 'LATIN'; | |
| private const SCRIPT_LIMBU = 'LIMBU'; | |
| private const SCRIPT_LINEAR_B = 'LINEAR_B'; | |
| private const SCRIPT_MALAYALAM = 'MALAYALAM'; | |
| private const SCRIPT_MEETEI_MAYEK = 'MEETEI_MAYEK'; | |
| private const SCRIPT_MEETEI_MAYEK_EXTENSIONS = 'MEETEI_MAYEK_EXTENSIONS'; | |
| private const SCRIPT_MONGOLIAN = 'MONGOLIAN'; | |
| private const SCRIPT_MYANMAR = 'MYANMAR'; | |
| private const SCRIPT_NEW_TAI_LUE = 'NEW_TAI_LUE'; | |
| private const SCRIPT_NKO = 'NKO'; | |
| private const SCRIPT_OGHAM = 'OGHAM'; | |
| private const SCRIPT_OL_CHIKI = 'OL_CHIKI'; | |
| private const SCRIPT_OLD_ITALIC = 'OLD_ITALIC'; | |
| private const SCRIPT_OLD_PERSIAN = 'OLD_PERSIAN'; | |
| private const SCRIPT_ORIYA = 'ORIYA'; | |
| private const SCRIPT_OSMANYA = 'OSMANYA'; | |
| private const SCRIPT_RUNIC = 'RUNIC'; | |
| private const SCRIPT_SHAVIAN = 'SHAVIAN'; | |
| private const SCRIPT_SINHALA = 'SINHALA'; | |
| private const SCRIPT_SYLOTI_NAGRI = 'SYLOTI_NAGRI'; | |
| private const SCRIPT_SYRIAC = 'SYRIAC'; | |
| private const SCRIPT_TAGALOG = 'TAGALOG'; | |
| private const SCRIPT_TAGBANWA = 'TAGBANWA'; | |
| private const SCRIPT_TAI_LE = 'TAI_LE'; | |
| private const SCRIPT_TAMIL = 'TAMIL'; | |
| private const SCRIPT_TELUGU = 'TELUGU'; | |
| private const SCRIPT_THAANA = 'THAANA'; | |
| private const SCRIPT_THAI = 'THAI'; | |
| private const SCRIPT_TIBETAN = 'TIBETAN'; | |
| private const SCRIPT_TIFINAGH = 'TIFINAGH'; | |
| private const SCRIPT_UGARITIC = 'UGARITIC'; | |
| private const SCRIPT_WARANG_CITI = 'WARANG_CITI'; | |
| private const SCRIPT_YI = 'YI'; | |
| /** | |
| * Define script tag codes for various Unicode codepoint ranges | |
| * If it does not have a code here, it does not have a script assignment | |
| * NB: Braille is not in this list since it is a transliteration system, not a script; | |
| * this does not disadvantage blind people, who will use Braille input/output methods | |
| * and not raw Braille... | |
| * NB: Middle dot is included in SCRIPT_LATIN for use in Catalan | |
| * NB: All scripts described by the Unicode Consortium as "Other Scripts" or "Ancient Scripts" | |
| * are commented out: these are either not in modern use, or only used for specialized | |
| * religious purposes, or only of literary interest | |
| */ | |
| private const ALL_SCRIPT_RANGES = [ | |
| [ 0x0020, 0x002F, | |
| self::SCRIPT_ASCII_PUNCTUATION ], // ASCII Punctuation 1, Hyphen, ASCII Punctuation 2 | |
| [ 0x0030, 0x0039, self::SCRIPT_ASCII_DIGITS ], // ASCII Digits | |
| [ 0x003A, 0x0040, self::SCRIPT_ASCII_PUNCTUATION ], // Colon, ASCII Punctuation 3 | |
| [ 0x0041, 0x005A, self::SCRIPT_LATIN ], // ASCII Uppercase | |
| [ 0x005B, 0x0060, | |
| self::SCRIPT_ASCII_PUNCTUATION ], // ASCII Punctuation 4, Underscore, ASCII Punctuation 5 | |
| [ 0x0061, 0x007A, self::SCRIPT_LATIN ], // ASCII Lowercase | |
| [ 0x007B, 0x007E, self::SCRIPT_ASCII_PUNCTUATION ], // ASCII Punctuation 5 | |
| [ 0x00B7, 0x00B7, self::SCRIPT_LATIN ], // Middle Dot | |
| [ 0x00C0, 0x00D6, self::SCRIPT_LATIN ], // Latin-1 Letters 1 | |
| [ 0x00D8, 0x00F6, self::SCRIPT_LATIN ], // Latin-1 Letters 2 | |
| [ 0x00F8, 0x02AF, | |
| self::SCRIPT_LATIN ], // Latin-1 Letters 3, Latin Extended-A, Latin Extended-B, IPA Extensions | |
| [ 0x0300, 0x036F, self::SCRIPT_COMBINING_MARKS ], // Combining Diacritical Marks | |
| [ 0x0370, 0x03E1, self::SCRIPT_GREEK ], // Greek and Coptic (Greek) | |
| [ 0x03E2, 0x03EF, self::SCRIPT_COPTIC_EXTRAS ], // Greek and Coptic (Coptic-unique) | |
| [ 0x03F0, 0x03FF, self::SCRIPT_GREEK ], // Greek and Coptic (Greek) | |
| [ 0x0400, 0x052F, self::SCRIPT_CYRILLIC ], // Cyrillic, Cyrillic Supplement | |
| [ 0x0530, 0x058F, self::SCRIPT_ARMENIAN ], // Armenian | |
| [ 0x0590, 0x05FF, self::SCRIPT_HEBREW ], // Hebrew | |
| [ 0x0600, 0x06FF, self::SCRIPT_ARABIC ], // Arabic | |
| [ 0x0700, 0x074F, self::SCRIPT_SYRIAC ], // Syriac | |
| [ 0x0750, 0x077F, self::SCRIPT_ARABIC ], // Arabic Supplement | |
| [ 0x0780, 0x07BF, self::SCRIPT_THAANA ], // Thaana | |
| [ 0x07C0, 0x07FF, self::SCRIPT_NKO ], // NKo (N'Ko) | |
| [ 0x0900, 0x097F, self::SCRIPT_DEVANAGARI ], // Devanagari | |
| [ 0x0980, 0x09FF, self::SCRIPT_BENGALI ], // Bengali | |
| [ 0x0A00, 0x0A7F, self::SCRIPT_GURMUKHI ], // Gurmukhi | |
| [ 0x0A80, 0x0AFF, self::SCRIPT_GUJARATI ], // Gujarati | |
| [ 0x0B00, 0x0B7F, self::SCRIPT_ORIYA ], // Oriya | |
| [ 0x0B80, 0x0BFF, self::SCRIPT_TAMIL ], // Tamil | |
| [ 0x0C00, 0x0C7F, self::SCRIPT_TELUGU ], // Telugu | |
| [ 0x0C80, 0x0CFF, self::SCRIPT_KANNADA ], // Kannada | |
| [ 0x0D00, 0x0D7F, self::SCRIPT_MALAYALAM ], // Malayalam | |
| [ 0x0D80, 0x0DFF, self::SCRIPT_SINHALA ], // Sinhala | |
| [ 0x0E00, 0x0E7F, self::SCRIPT_THAI ], // Thai | |
| [ 0x0E80, 0x0EFF, self::SCRIPT_LAO ], // Lao | |
| [ 0x0F00, 0x0FFF, self::SCRIPT_TIBETAN ], // Tibetan | |
| [ 0x1000, 0x109F, self::SCRIPT_MYANMAR ], // Myanmar | |
| [ 0x10A0, 0x10FF, self::SCRIPT_GEORGIAN ], // Georgian | |
| [ 0x1100, 0x11FF, self::SCRIPT_HANGUL ], // Hangul Jamo | |
| [ 0x1200, 0x139F, self::SCRIPT_ETHIOPIC ], // Ethiopic, Ethiopic Supplement | |
| [ 0x13A0, 0x13FF, self::SCRIPT_CHEROKEE ], // Cherokee | |
| [ 0x1400, 0x167F, self::SCRIPT_CANADIAN_ABORIGINAL ], // Unified Canadian Aboriginal Syllabics | |
| // [ 0x1680, 0x169F, self::SCRIPT_OGHAM ], // Ogham | |
| // [ 0x16A0, 0x16FF, self::SCRIPT_RUNIC ], // Runic | |
| [ 0x1700, 0x171F, self::SCRIPT_TAGALOG ], // Tagalog | |
| [ 0x1720, 0x173F, self::SCRIPT_HANUNOO ], // Hanunoo | |
| [ 0x1740, 0x175F, self::SCRIPT_BUHID ], // Buhid | |
| [ 0x1760, 0x177F, self::SCRIPT_TAGBANWA ], // Tagbanwa | |
| [ 0x1780, 0x17FF, self::SCRIPT_KHMER ], // Khmer | |
| [ 0x1800, 0x18AF, self::SCRIPT_MONGOLIAN ], // Mongolian | |
| [ 0x1900, 0x194F, self::SCRIPT_LIMBU ], // Limbu | |
| [ 0x1950, 0x197F, self::SCRIPT_TAI_LE ], // Tai Le | |
| [ 0x1980, 0x19DF, self::SCRIPT_NEW_TAI_LUE ], // New Tai Lue | |
| [ 0x1A00, 0x1A1F, self::SCRIPT_BUGINESE ], // Buginese | |
| [ 0x1C50, 0x1C7F, self::SCRIPT_OL_CHIKI ], // Ol Chiki | |
| [ 0x1E00, 0x1EFF, self::SCRIPT_LATIN ], // Latin Extended Additional | |
| [ 0x1F00, 0x1FFF, self::SCRIPT_GREEK ], // Greek Extended | |
| // [ 0x2C00, 0x2C5F, self::SCRIPT_GLAGOLITIC ], // Glagolitic | |
| [ 0x2C80, 0x2CFF, self::SCRIPT_COPTIC ], // Coptic | |
| [ 0x2D00, 0x2D2F, self::SCRIPT_GEORGIAN ], // Georgian Supplement | |
| [ 0x2D30, 0x2D7F, self::SCRIPT_TIFINAGH ], // Tifinagh | |
| [ 0x2D80, 0x2DDF, self::SCRIPT_ETHIOPIC ], // Ethiopic Extended | |
| [ 0x2E80, 0x2FDF, self::SCRIPT_DEPRECATED ], // CJK Radicals Supplement, Kangxi Radicals | |
| [ 0x3040, 0x309F, self::SCRIPT_HIRAGANA ], // Hiragana | |
| [ 0x30A0, 0x30FF, self::SCRIPT_KATAKANA ], // Katakana | |
| [ 0x3100, 0x312F, self::SCRIPT_BOPOMOFO ], // Bopomofo | |
| [ 0x3130, 0x318F, self::SCRIPT_HANGUL ], // Hangul Compatibility Jamo | |
| [ 0x31A0, 0x31BF, self::SCRIPT_BOPOMOFO ], // Bopomofo Extended | |
| [ 0x3400, 0x4DBF, self::SCRIPT_HAN ], // CJK Unified Ideographs Extension A | |
| [ 0x4E00, 0x9FFF, self::SCRIPT_HAN ], // CJK Unified Ideographs | |
| [ 0xA000, 0xA4CF, self::SCRIPT_YI ], // Yi Syllables, Yi Radicals | |
| [ 0xA800, 0xA82F, self::SCRIPT_SYLOTI_NAGRI ], // Syloti Nagri | |
| // [ 0xAAE0, 0xAAFF, self::SCRIPT_MEETEI_MAYEK_EXTENSIONS ] // Meetei Mayek Extensions | |
| [ 0xABC0, 0xABFF, self::SCRIPT_MEETEI_MAYEK ], // Meetei Mayek | |
| [ 0xAC00, 0xD7AF, self::SCRIPT_HANGUL ], // Hangul Syllables | |
| [ 0xF900, 0xFAFF, self::SCRIPT_DEPRECATED ], // CJK Compatibility Ideographs | |
| // [ 0x10000, 0x100FF, self::SCRIPT_LINEAR_B ], // Linear B Syllabary, Linear B Ideograms | |
| // [ 0x10140, 0x1018F, self::SCRIPT_GREEK ], // Ancient Greek Numbers | |
| // [ 0x10300, 0x1032F, self::SCRIPT_OLD_ITALIC ], // Old Italic | |
| [ 0x10330, 0x1034F, self::SCRIPT_GOTHIC ], // Gothic | |
| // [ 0x10380, 0x1039F, self::SCRIPT_UGARITIC ], // Ugaritic | |
| // [ 0x103A0, 0x103DF, self::SCRIPT_OLD_PERSIAN ], // Old Persian | |
| // [ 0x10400, 0x1044F, self::SCRIPT_DESERET ], // Deseret | |
| // [ 0x10450, 0x1047F, self::SCRIPT_SHAVIAN ], // Shavian | |
| // [ 0x10480, 0x104AF, self::SCRIPT_OSMANYA ], // Osmanya | |
| // [ 0x10800, 0x1083F, self::SCRIPT_CYPRIOT ], // Cypriot Syllabary | |
| [ 0x10A00, 0x10A5F, self::SCRIPT_KHAROSHTHI ], // Kharoshthi | |
| [ 0x118A0, 0x118FF, self::SCRIPT_WARANG_CITI ], // Warang Citi | |
| [ 0x20000, 0x2A6DF, self::SCRIPT_HAN ], // CJK Unified Ideographs Extension B | |
| [ 0x2F800, 0x2FA1F, self::SCRIPT_DEPRECATED ] // CJK Compatibility Ideographs Supplement | |
| ]; | |
| private const ALLOWED_SCRIPT_COMBINATIONS = [ | |
| [ self::SCRIPT_COPTIC, self::SCRIPT_COPTIC_EXTRAS ], # Coptic, using old Greek chars | |
| [ self::SCRIPT_GREEK, self::SCRIPT_COPTIC_EXTRAS ], # Coptic, using new Coptic chars | |
| [ self::SCRIPT_HAN, self::SCRIPT_BOPOMOFO ], # Chinese | |
| [ self::SCRIPT_HAN, self::SCRIPT_HANGUL ], # Korean | |
| [ self::SCRIPT_HAN, self::SCRIPT_KATAKANA, self::SCRIPT_HIRAGANA ] # Japanese | |
| ]; | |
| /** | |
| * @var Equivset | |
| */ | |
| private static $equivset; | |
| /** | |
| * @return Equivset | |
| */ | |
| public static function getEquivSet() { | |
| if ( !self::$equivset ) { | |
| self::$equivset = new Equivset(); | |
| } | |
| return self::$equivset; | |
| } | |
| /** | |
| * @param int $ch | |
| * @return string | |
| */ | |
| private static function getScriptCode( $ch ) { | |
| # Linear search: binary chop would be faster... | |
| foreach ( self::ALL_SCRIPT_RANGES as $range ) { | |
| if ( $ch >= $range[0] && $ch <= $range[1] ) { | |
| return $range[2]; | |
| } | |
| } | |
| # Otherwise... | |
| return self::SCRIPT_UNASSIGNED; | |
| } | |
| /** | |
| * @param array $aList | |
| * @param array $bList | |
| * @return bool | |
| */ | |
| private static function isSubsetOf( $aList, $bList ) { | |
| return count( array_diff( $aList, $bList ) ) == 0; | |
| } | |
| /** | |
| * Is this an allowed script mixture? | |
| * | |
| * @param array $scriptList | |
| * @return bool | |
| */ | |
| private static function isAllowedScriptCombination( $scriptList ) { | |
| foreach ( self::ALLOWED_SCRIPT_COMBINATIONS as $allowedCombo ) { | |
| if ( self::isSubsetOf( $scriptList, $allowedCombo ) ) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| /** | |
| * Convert string into array of Unicode code points as integers | |
| * @param string $str | |
| * @return int[] | |
| */ | |
| private static function stringToList( $str ) { | |
| $ar = []; | |
| if ( !preg_match_all( '/./us', $str, $ar ) ) { | |
| return []; | |
| } | |
| $out = []; | |
| foreach ( $ar[0] as $char ) { | |
| $out[] = Utils::utf8ToCodepoint( $char ); | |
| } | |
| return $out; | |
| } | |
| /** | |
| * @param array $list | |
| * @return string | |
| */ | |
| private static function listToString( $list ) { | |
| $out = ''; | |
| foreach ( $list as $cp ) { | |
| $out .= Utils::codepointToUtf8( $cp ); | |
| } | |
| return $out; | |
| } | |
| /** | |
| * @param array $a_list | |
| * @return string | |
| */ | |
| private static function hardjoin( $a_list ) { | |
| return implode( '', $a_list ); | |
| } | |
| /** | |
| * @param string $testName | |
| * @return string | |
| */ | |
| public static function normalizeString( $testName ) { | |
| return self::getEquivSet()->normalize( $testName ); | |
| } | |
| /** | |
| * @param int[] $text | |
| * @param string $script | |
| * @return int[] | |
| */ | |
| private static function stripScript( array $text, $script ) { | |
| $scripts = array_map( [ __CLASS__, 'getScriptCode' ], $text ); | |
| $out = []; | |
| foreach ( $text as $index => $char ) { | |
| if ( $scripts[$index] !== $script ) { | |
| $out[] = $char; | |
| } | |
| } | |
| return $out; | |
| } | |
| /** | |
| * Helper function for checkUnicodeStringStatus: Return an error on a bad character. | |
| * @todo I would like to show Unicode character name, but it is not clear how to get it. | |
| * @param string $msgId message identifier. | |
| * @param int $point codepoint of the bad character. | |
| * @return Status | |
| */ | |
| private static function badCharErr( $msgId, $point ) { | |
| $symbol = Utils::codepointToUtf8( $point ); | |
| // Combining marks are combined with the previous character. If abusing character is a | |
| // combining mark, prepend it with space to show them correctly. | |
| if ( self::getScriptCode( $point ) === self::SCRIPT_COMBINING_MARKS ) { | |
| $symbol = ' ' . $symbol; | |
| } | |
| $code = sprintf( 'U+%04X', $point ); | |
| if ( preg_match( '/\A\p{C}\z/u', $symbol ) ) { | |
| $char = wfMessage( 'antispoof-bad-char-non-printable', $code ); | |
| } else { | |
| $char = wfMessage( 'antispoof-bad-char', $symbol, $code ); | |
| } | |
| return Status::newFatal( wfMessage( $msgId, $char ) ); | |
| } | |
| /** | |
| * TODO: does too much in one routine, refactor... | |
| * @param string $testName | |
| * @return Status | |
| * @since 1.32 | |
| */ | |
| public static function checkUnicodeStringStatus( $testName ) { | |
| global $wgAntiSpoofProhibitedCharacters; | |
| // Start with some sanity checking | |
| if ( !is_array( $wgAntiSpoofProhibitedCharacters ) ) { | |
| throw new MWException( '$wgAntiSpoofProhibitedCharacters should be an array!' ); | |
| } | |
| if ( !is_string( $testName ) ) { | |
| return Status::newFatal( 'antispoof-badtype' ); | |
| } | |
| if ( strlen( $testName ) == 0 ) { | |
| return Status::newFatal( 'antispoof-empty' ); | |
| } | |
| foreach ( self::stringToList( $testName ) as $char ) { | |
| if ( in_array( $char, $wgAntiSpoofProhibitedCharacters ) ) { | |
| return self::badCharErr( 'antispoof-prohibited', $char ); | |
| } | |
| } | |
| // Perform Unicode _compatibility_ decomposition | |
| $testName = Validator::toNFKD( $testName ); | |
| $testChars = self::stringToList( $testName ); | |
| // Be paranoid: check again, just in case Unicode normalization code changes... | |
| foreach ( $testChars as $char ) { | |
| if ( in_array( $char, $wgAntiSpoofProhibitedCharacters ) ) { | |
| return self::badCharErr( 'antispoof-prohibited', $char ); | |
| } | |
| } | |
| // Check for this: should not happen in any valid Unicode string | |
| if ( self::getScriptCode( $testChars[0] ) === self::SCRIPT_COMBINING_MARKS ) { | |
| return self::badCharErr( 'antispoof-combining', $testChars[0] ); | |
| } | |
| // Strip all combining characters in order to crudely strip accents | |
| // Note: NFKD normalization should have decomposed all accented chars earlier | |
| $testChars = self::stripScript( $testChars, self::SCRIPT_COMBINING_MARKS ); | |
| $testScripts = array_map( [ __CLASS__, 'getScriptCode' ], $testChars ); | |
| $unassigned = array_search( self::SCRIPT_UNASSIGNED, $testScripts ); | |
| if ( $unassigned !== false ) { | |
| return self::badCharErr( 'antispoof-unassigned', $testChars[$unassigned] ); | |
| } | |
| $deprecated = array_search( self::SCRIPT_DEPRECATED, $testScripts ); | |
| if ( $deprecated !== false ) { | |
| return self::badCharErr( 'antispoof-deprecated', $testChars[$deprecated] ); | |
| } | |
| $testScripts = array_unique( $testScripts ); | |
| // We don't mind ASCII punctuation or digits | |
| $testScripts = array_diff( $testScripts, | |
| [ self::SCRIPT_ASCII_PUNCTUATION, self::SCRIPT_ASCII_DIGITS ] ); | |
| if ( !$testScripts ) { | |
| return Status::newFatal( 'antispoof-noletters' ); | |
| } | |
| if ( count( $testScripts ) > 1 && !self::isAllowedScriptCombination( $testScripts ) ) { | |
| return Status::newFatal( 'antispoof-mixedscripts' ); | |
| } | |
| // At this point, we should probably check for BiDi violations if they aren't | |
| // caught above... | |
| // Squeeze out all punctuation chars | |
| // TODO: almost the same code occurs twice, refactor into own routine | |
| $testChars = self::stripScript( $testChars, self::SCRIPT_ASCII_PUNCTUATION ); | |
| $testName = self::listToString( $testChars ); | |
| // Replace characters in confusables set with equivalence chars | |
| $testName = self::normalizeString( $testName ); | |
| // Do very simple sequence processing: "vv" -> "w", "rn" -> "m"... | |
| // Not exhaustive, but ups the ante... | |
| // Do this _after_ canonicalization: looks weird, but needed for consistency | |
| $testName = str_replace( 'VV', 'W', $testName ); | |
| $testName = str_replace( 'RN', 'M', $testName ); | |
| // Remove all remaining spaces, just in case any have snuck through... | |
| $testName = self::hardjoin( explode( " ", $testName ) ); | |
| // Reduce repeated char sequences to single character | |
| // BUG: TODO: implement this | |
| if ( strlen( $testName ) < 1 ) { | |
| return Status::newFatal( 'antispoof-tooshort' ); | |
| } | |
| // Don't ASCIIfy: we assume we are UTF-8 capable on output | |
| // Prepend version string, for futureproofing if this algorithm changes | |
| $testName = "v2:" . $testName; | |
| // And return the canonical version of the name | |
| return Status::newGood( $testName ); | |
| } | |
| } |