| // © 2016 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| /* |
| *************************************************************************** |
| * Copyright (C) 2008-2015, International Business Machines Corporation |
| * and others. All Rights Reserved. |
| *************************************************************************** |
| * file name: uspoof.cpp |
| * encoding: UTF-8 |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2008Feb13 |
| * created by: Andy Heninger |
| * |
| * Unicode Spoof Detection |
| */ |
| #if defined(STARBOARD) |
| #include "starboard/client_porting/poem/assert_poem.h" |
| #include "starboard/client_porting/poem/string_poem.h" |
| #endif // defined(STARBOARD) |
| #include "unicode/utypes.h" |
| #include "unicode/normalizer2.h" |
| #include "unicode/uspoof.h" |
| #include "unicode/ustring.h" |
| #include "unicode/utf16.h" |
| #include "cmemory.h" |
| #include "cstring.h" |
| #include "mutex.h" |
| #include "scriptset.h" |
| #include "uassert.h" |
| #include "ucln_in.h" |
| #include "uspoof_impl.h" |
| #include "umutex.h" |
| |
| |
| #if !UCONFIG_NO_NORMALIZATION |
| |
| U_NAMESPACE_USE |
| |
| |
| // |
| // Static Objects used by the spoof impl, their thread safe initialization and their cleanup. |
| // |
| static UnicodeSet *gInclusionSet = NULL; |
| static UnicodeSet *gRecommendedSet = NULL; |
| static const Normalizer2 *gNfdNormalizer = NULL; |
| static UInitOnce gSpoofInitStaticsOnce = U_INITONCE_INITIALIZER; |
| |
| namespace { |
| |
| UBool U_CALLCONV |
| uspoof_cleanup(void) { |
| delete gInclusionSet; |
| gInclusionSet = NULL; |
| delete gRecommendedSet; |
| gRecommendedSet = NULL; |
| gNfdNormalizer = NULL; |
| gSpoofInitStaticsOnce.reset(); |
| return TRUE; |
| } |
| |
| void U_CALLCONV initializeStatics(UErrorCode &status) { |
| static const char16_t *inclusionPat = |
| u"['\\-.\\:\\u00B7\\u0375\\u058A\\u05F3\\u05F4\\u06FD\\u06FE\\u0F0B\\u200C" |
| u"\\u200D\\u2010\\u2019\\u2027\\u30A0\\u30FB]"; |
| gInclusionSet = new UnicodeSet(UnicodeString(inclusionPat), status); |
| if (gInclusionSet == NULL) { |
| status = U_MEMORY_ALLOCATION_ERROR; |
| return; |
| } |
| gInclusionSet->freeze(); |
| |
| // Note: data from IdentifierStatus.txt & IdentifierType.txt |
| // There is tooling to generate this constant in the unicodetools project: |
| // org.unicode.text.tools.RecommendedSetGenerator |
| // It will print the Java and C++ code to the console for easy copy-paste into this file. |
| static const char16_t *recommendedPat = |
| u"[0-9A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u0131\\u0134-\\u013E" |
| u"\\u0141-\\u0148\\u014A-\\u017E\\u018F\\u01A0\\u01A1\\u01AF\\u01B0\\u01CD-" |
| u"\\u01DC\\u01DE-\\u01E3\\u01E6-\\u01F0\\u01F4\\u01F5\\u01F8-\\u021B\\u021E" |
| u"\\u021F\\u0226-\\u0233\\u0259\\u02BB\\u02BC\\u02EC\\u0300-\\u0304\\u0306-" |
| u"\\u030C\\u030F-\\u0311\\u0313\\u0314\\u031B\\u0323-\\u0328\\u032D\\u032E" |
| u"\\u0330\\u0331\\u0335\\u0338\\u0339\\u0342\\u0345\\u037B-\\u037D\\u0386" |
| u"\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03CE\\u03FC-\\u045F\\u048A-" |
| u"\\u04FF\\u0510-\\u0529\\u052E\\u052F\\u0531-\\u0556\\u0559\\u0561-\\u0586" |
| u"\\u05B4\\u05D0-\\u05EA\\u05EF-\\u05F2\\u0620-\\u063F\\u0641-\\u0655\\u0660-" |
| u"\\u0669\\u0670-\\u0672\\u0674\\u0679-\\u068D\\u068F-\\u06A0\\u06A2-\\u06D3" |
| u"\\u06D5\\u06E5\\u06E6\\u06EE-\\u06FC\\u06FF\\u0750-\\u07B1\\u08A0-\\u08AC" |
| u"\\u08B2\\u08B6-\\u08C7\\u0901-\\u094D\\u094F\\u0950\\u0956\\u0957\\u0960-" |
| u"\\u0963\\u0966-\\u096F\\u0971-\\u0977\\u0979-\\u097F\\u0981-\\u0983\\u0985-" |
| u"\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9" |
| u"\\u09BC-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CE\\u09D7\\u09E0-\\u09E3\\u09E6-" |
| u"\\u09F1\\u09FE\\u0A01-\\u0A03\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28" |
| u"\\u0A2A-\\u0A30\\u0A32\\u0A35\\u0A38\\u0A39\\u0A3C\\u0A3E-\\u0A42\\u0A47" |
| u"\\u0A48\\u0A4B-\\u0A4D\\u0A5C\\u0A66-\\u0A74\\u0A81-\\u0A83\\u0A85-\\u0A8D" |
| u"\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9" |
| u"\\u0ABC-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0AD0\\u0AE0-\\u0AE3\\u0AE6-" |
| u"\\u0AEF\\u0AFA-\\u0AFF\\u0B01-\\u0B03\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-" |
| u"\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3C-\\u0B43\\u0B47" |
| u"\\u0B48\\u0B4B-\\u0B4D\\u0B55-\\u0B57\\u0B5F-\\u0B61\\u0B66-\\u0B6F\\u0B71" |
| u"\\u0B82\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A" |
| u"\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BBE-" |
| u"\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD0\\u0BD7\\u0BE6-\\u0BEF\\u0C01-" |
| u"\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C3D-" |
| u"\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C60\\u0C61\\u0C66-" |
| u"\\u0C6F\\u0C80\\u0C82\\u0C83\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8" |
| u"\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBC-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD" |
| u"\\u0CD5\\u0CD6\\u0CE0-\\u0CE3\\u0CE6-\\u0CEF\\u0CF1\\u0CF2\\u0D00\\u0D02" |
| u"\\u0D03\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D-\\u0D43\\u0D46-" |
| u"\\u0D48\\u0D4A-\\u0D4E\\u0D54-\\u0D57\\u0D60\\u0D61\\u0D66-\\u0D6F\\u0D7A-" |
| u"\\u0D7F\\u0D82\\u0D83\\u0D85-\\u0D8E\\u0D91-\\u0D96\\u0D9A-\\u0DA5\\u0DA7-" |
| u"\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0DCA\\u0DCF-\\u0DD4\\u0DD6" |
| u"\\u0DD8-\\u0DDE\\u0DF2\\u0E01-\\u0E32\\u0E34-\\u0E3A\\u0E40-\\u0E4E\\u0E50-" |
| u"\\u0E59\\u0E81\\u0E82\\u0E84\\u0E86-\\u0E8A\\u0E8C-\\u0EA3\\u0EA5\\u0EA7-" |
| u"\\u0EB2\\u0EB4-\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EC8-\\u0ECD\\u0ED0-\\u0ED9" |
| u"\\u0EDE\\u0EDF\\u0F00\\u0F20-\\u0F29\\u0F35\\u0F37\\u0F3E-\\u0F42\\u0F44-" |
| u"\\u0F47\\u0F49-\\u0F4C\\u0F4E-\\u0F51\\u0F53-\\u0F56\\u0F58-\\u0F5B\\u0F5D-" |
| u"\\u0F68\\u0F6A-\\u0F6C\\u0F71\\u0F72\\u0F74\\u0F7A-\\u0F80\\u0F82-\\u0F84" |
| u"\\u0F86-\\u0F92\\u0F94-\\u0F97\\u0F99-\\u0F9C\\u0F9E-\\u0FA1\\u0FA3-\\u0FA6" |
| u"\\u0FA8-\\u0FAB\\u0FAD-\\u0FB8\\u0FBA-\\u0FBC\\u0FC6\\u1000-\\u1049\\u1050-" |
| u"\\u109D\\u10C7\\u10CD\\u10D0-\\u10F0\\u10F7-\\u10FA\\u10FD-\\u10FF\\u1200-" |
| u"\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288" |
| u"\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-" |
| u"\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u135D-" |
| u"\\u135F\\u1380-\\u138F\\u1780-\\u17A2\\u17A5-\\u17A7\\u17A9-\\u17B3\\u17B6-" |
| u"\\u17CA\\u17D2\\u17D7\\u17DC\\u17E0-\\u17E9\\u1C90-\\u1CBA\\u1CBD-\\u1CBF" |
| u"\\u1E00-\\u1E99\\u1E9E\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-" |
| u"\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F70" |
| u"\\u1F72\\u1F74\\u1F76\\u1F78\\u1F7A\\u1F7C\\u1F80-\\u1FB4\\u1FB6-\\u1FBA" |
| u"\\u1FBC\\u1FC2-\\u1FC4\\u1FC6-\\u1FC8\\u1FCA\\u1FCC\\u1FD0-\\u1FD2\\u1FD6-" |
| u"\\u1FDA\\u1FE0-\\u1FE2\\u1FE4-\\u1FEA\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FF8" |
| u"\\u1FFA\\u1FFC\\u2D27\\u2D2D\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE" |
| u"\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6" |
| u"\\u2DD8-\\u2DDE\\u3005-\\u3007\\u3041-\\u3096\\u3099\\u309A\\u309D\\u309E" |
| u"\\u30A1-\\u30FA\\u30FC-\\u30FE\\u3105-\\u312D\\u312F\\u31A0-\\u31BF\\u3400-" |
| u"\\u4DBF\\u4E00-\\u9FFC\\uA67F\\uA717-\\uA71F\\uA788\\uA78D\\uA792\\uA793" |
| u"\\uA7AA\\uA7AE\\uA7B8\\uA7B9\\uA7C2-\\uA7CA\\uA9E7-\\uA9FE\\uAA60-\\uAA76" |
| u"\\uAA7A-\\uAA7F\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26" |
| u"\\uAB28-\\uAB2E\\uAB66\\uAB67\\uAC00-\\uD7A3\\uFA0E\\uFA0F\\uFA11\\uFA13" |
| u"\\uFA14\\uFA1F\\uFA21\\uFA23\\uFA24\\uFA27-\\uFA29\\U00011301\\U00011303" |
| u"\\U0001133B\\U0001133C\\U00016FF0\\U00016FF1\\U0001B150-\\U0001B152" |
| u"\\U0001B164-\\U0001B167\\U00020000-\\U0002A6DD\\U0002A700-\\U0002B734" |
| u"\\U0002B740-\\U0002B81D\\U0002B820-\\U0002CEA1\\U0002CEB0-\\U0002EBE0" |
| u"\\U00030000-\\U0003134A]"; |
| |
| gRecommendedSet = new UnicodeSet(UnicodeString(recommendedPat), status); |
| if (gRecommendedSet == NULL) { |
| status = U_MEMORY_ALLOCATION_ERROR; |
| delete gInclusionSet; |
| return; |
| } |
| gRecommendedSet->freeze(); |
| gNfdNormalizer = Normalizer2::getNFDInstance(status); |
| ucln_i18n_registerCleanup(UCLN_I18N_SPOOF, uspoof_cleanup); |
| } |
| |
| } // namespace |
| |
| U_CFUNC void uspoof_internalInitStatics(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| } |
| |
| U_CAPI USpoofChecker * U_EXPORT2 |
| uspoof_open(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| if (U_FAILURE(*status)) { |
| return NULL; |
| } |
| SpoofImpl *si = new SpoofImpl(*status); |
| if (si == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| if (U_FAILURE(*status)) { |
| delete si; |
| return NULL; |
| } |
| return si->asUSpoofChecker(); |
| } |
| |
| |
| U_CAPI USpoofChecker * U_EXPORT2 |
| uspoof_openFromSerialized(const void *data, int32_t length, int32_t *pActualLength, |
| UErrorCode *status) { |
| if (U_FAILURE(*status)) { |
| return NULL; |
| } |
| |
| if (data == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| if (U_FAILURE(*status)) |
| { |
| return NULL; |
| } |
| |
| SpoofData *sd = new SpoofData(data, length, *status); |
| if (sd == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| |
| if (U_FAILURE(*status)) { |
| delete sd; |
| return NULL; |
| } |
| |
| SpoofImpl *si = new SpoofImpl(sd, *status); |
| if (si == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| delete sd; // explicit delete as the destructor for si won't be called. |
| return NULL; |
| } |
| |
| if (U_FAILURE(*status)) { |
| delete si; // no delete for sd, as the si destructor will delete it. |
| return NULL; |
| } |
| |
| if (pActualLength != NULL) { |
| *pActualLength = sd->size(); |
| } |
| return si->asUSpoofChecker(); |
| } |
| |
| |
| U_CAPI USpoofChecker * U_EXPORT2 |
| uspoof_clone(const USpoofChecker *sc, UErrorCode *status) { |
| const SpoofImpl *src = SpoofImpl::validateThis(sc, *status); |
| if (src == NULL) { |
| return NULL; |
| } |
| SpoofImpl *result = new SpoofImpl(*src, *status); // copy constructor |
| if (result == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| if (U_FAILURE(*status)) { |
| delete result; |
| result = NULL; |
| } |
| return result->asUSpoofChecker(); |
| } |
| |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_close(USpoofChecker *sc) { |
| UErrorCode status = U_ZERO_ERROR; |
| SpoofImpl *This = SpoofImpl::validateThis(sc, status); |
| delete This; |
| } |
| |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_setChecks(USpoofChecker *sc, int32_t checks, UErrorCode *status) { |
| SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return; |
| } |
| |
| // Verify that the requested checks are all ones (bits) that |
| // are acceptable, known values. |
| if (checks & ~(USPOOF_ALL_CHECKS | USPOOF_AUX_INFO)) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| This->fChecks = checks; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_getChecks(const USpoofChecker *sc, UErrorCode *status) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return 0; |
| } |
| return This->fChecks; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_setRestrictionLevel(USpoofChecker *sc, URestrictionLevel restrictionLevel) { |
| UErrorCode status = U_ZERO_ERROR; |
| SpoofImpl *This = SpoofImpl::validateThis(sc, status); |
| if (This != NULL) { |
| This->fRestrictionLevel = restrictionLevel; |
| This->fChecks |= USPOOF_RESTRICTION_LEVEL; |
| } |
| } |
| |
| U_CAPI URestrictionLevel U_EXPORT2 |
| uspoof_getRestrictionLevel(const USpoofChecker *sc) { |
| UErrorCode status = U_ZERO_ERROR; |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, status); |
| if (This == NULL) { |
| return USPOOF_UNRESTRICTIVE; |
| } |
| return This->fRestrictionLevel; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_setAllowedLocales(USpoofChecker *sc, const char *localesList, UErrorCode *status) { |
| SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return; |
| } |
| This->setAllowedLocales(localesList, *status); |
| } |
| |
| U_CAPI const char * U_EXPORT2 |
| uspoof_getAllowedLocales(USpoofChecker *sc, UErrorCode *status) { |
| SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return NULL; |
| } |
| return This->getAllowedLocales(*status); |
| } |
| |
| |
| U_CAPI const USet * U_EXPORT2 |
| uspoof_getAllowedChars(const USpoofChecker *sc, UErrorCode *status) { |
| const UnicodeSet *result = uspoof_getAllowedUnicodeSet(sc, status); |
| return result->toUSet(); |
| } |
| |
| U_CAPI const UnicodeSet * U_EXPORT2 |
| uspoof_getAllowedUnicodeSet(const USpoofChecker *sc, UErrorCode *status) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return NULL; |
| } |
| return This->fAllowedCharsSet; |
| } |
| |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_setAllowedChars(USpoofChecker *sc, const USet *chars, UErrorCode *status) { |
| const UnicodeSet *set = UnicodeSet::fromUSet(chars); |
| uspoof_setAllowedUnicodeSet(sc, set, status); |
| } |
| |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_setAllowedUnicodeSet(USpoofChecker *sc, const UnicodeSet *chars, UErrorCode *status) { |
| SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return; |
| } |
| if (chars->isBogus()) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| UnicodeSet *clonedSet = chars->clone(); |
| if (clonedSet == NULL || clonedSet->isBogus()) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return; |
| } |
| clonedSet->freeze(); |
| delete This->fAllowedCharsSet; |
| This->fAllowedCharsSet = clonedSet; |
| This->fChecks |= USPOOF_CHAR_LIMIT; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_check(const USpoofChecker *sc, |
| const UChar *id, int32_t length, |
| int32_t *position, |
| UErrorCode *status) { |
| |
| // Backwards compatibility: |
| if (position != NULL) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2(sc, id, length, NULL, status); |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_check2(const USpoofChecker *sc, |
| const UChar* id, int32_t length, |
| USpoofCheckResult* checkResult, |
| UErrorCode *status) { |
| |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return 0; |
| } |
| if (length < -1) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| UnicodeString idStr((length == -1), id, length); // Aliasing constructor. |
| int32_t result = uspoof_check2UnicodeString(sc, idStr, checkResult, status); |
| return result; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_checkUTF8(const USpoofChecker *sc, |
| const char *id, int32_t length, |
| int32_t *position, |
| UErrorCode *status) { |
| |
| // Backwards compatibility: |
| if (position != NULL) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2UTF8(sc, id, length, NULL, status); |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_check2UTF8(const USpoofChecker *sc, |
| const char *id, int32_t length, |
| USpoofCheckResult* checkResult, |
| UErrorCode *status) { |
| |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| UnicodeString idStr = UnicodeString::fromUTF8(StringPiece(id, length>=0 ? length : static_cast<int32_t>(uprv_strlen(id)))); |
| int32_t result = uspoof_check2UnicodeString(sc, idStr, checkResult, status); |
| return result; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_areConfusable(const USpoofChecker *sc, |
| const UChar *id1, int32_t length1, |
| const UChar *id2, int32_t length2, |
| UErrorCode *status) { |
| SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| if (length1 < -1 || length2 < -1) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| UnicodeString id1Str((length1==-1), id1, length1); // Aliasing constructor |
| UnicodeString id2Str((length2==-1), id2, length2); // Aliasing constructor |
| return uspoof_areConfusableUnicodeString(sc, id1Str, id2Str, status); |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_areConfusableUTF8(const USpoofChecker *sc, |
| const char *id1, int32_t length1, |
| const char *id2, int32_t length2, |
| UErrorCode *status) { |
| SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| if (length1 < -1 || length2 < -1) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| UnicodeString id1Str = UnicodeString::fromUTF8(StringPiece(id1, length1>=0? length1 : static_cast<int32_t>(uprv_strlen(id1)))); |
| UnicodeString id2Str = UnicodeString::fromUTF8(StringPiece(id2, length2>=0? length2 : static_cast<int32_t>(uprv_strlen(id2)))); |
| int32_t results = uspoof_areConfusableUnicodeString(sc, id1Str, id2Str, status); |
| return results; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_areConfusableUnicodeString(const USpoofChecker *sc, |
| const icu::UnicodeString &id1, |
| const icu::UnicodeString &id2, |
| UErrorCode *status) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| // |
| // See section 4 of UAX 39 for the algorithm for checking whether two strings are confusable, |
| // and for definitions of the types (single, whole, mixed-script) of confusables. |
| |
| // We only care about a few of the check flags. Ignore the others. |
| // If no tests relavant to this function have been specified, return an error. |
| // TODO: is this really the right thing to do? It's probably an error on the caller's part, |
| // but logically we would just return 0 (no error). |
| if ((This->fChecks & USPOOF_CONFUSABLE) == 0) { |
| *status = U_INVALID_STATE_ERROR; |
| return 0; |
| } |
| |
| // Compute the skeletons and check for confusability. |
| UnicodeString id1Skeleton; |
| uspoof_getSkeletonUnicodeString(sc, 0 /* deprecated */, id1, id1Skeleton, status); |
| UnicodeString id2Skeleton; |
| uspoof_getSkeletonUnicodeString(sc, 0 /* deprecated */, id2, id2Skeleton, status); |
| if (U_FAILURE(*status)) { return 0; } |
| if (id1Skeleton != id2Skeleton) { |
| return 0; |
| } |
| |
| // If we get here, the strings are confusable. Now we just need to set the flags for the appropriate classes |
| // of confusables according to UTS 39 section 4. |
| // Start by computing the resolved script sets of id1 and id2. |
| ScriptSet id1RSS; |
| This->getResolvedScriptSet(id1, id1RSS, *status); |
| ScriptSet id2RSS; |
| This->getResolvedScriptSet(id2, id2RSS, *status); |
| |
| // Turn on all applicable flags |
| int32_t result = 0; |
| if (id1RSS.intersects(id2RSS)) { |
| result |= USPOOF_SINGLE_SCRIPT_CONFUSABLE; |
| } else { |
| result |= USPOOF_MIXED_SCRIPT_CONFUSABLE; |
| if (!id1RSS.isEmpty() && !id2RSS.isEmpty()) { |
| result |= USPOOF_WHOLE_SCRIPT_CONFUSABLE; |
| } |
| } |
| |
| // Turn off flags that the user doesn't want |
| if ((This->fChecks & USPOOF_SINGLE_SCRIPT_CONFUSABLE) == 0) { |
| result &= ~USPOOF_SINGLE_SCRIPT_CONFUSABLE; |
| } |
| if ((This->fChecks & USPOOF_MIXED_SCRIPT_CONFUSABLE) == 0) { |
| result &= ~USPOOF_MIXED_SCRIPT_CONFUSABLE; |
| } |
| if ((This->fChecks & USPOOF_WHOLE_SCRIPT_CONFUSABLE) == 0) { |
| result &= ~USPOOF_WHOLE_SCRIPT_CONFUSABLE; |
| } |
| |
| return result; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_checkUnicodeString(const USpoofChecker *sc, |
| const icu::UnicodeString &id, |
| int32_t *position, |
| UErrorCode *status) { |
| |
| // Backwards compatibility: |
| if (position != NULL) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2UnicodeString(sc, id, NULL, status); |
| } |
| |
| namespace { |
| |
| int32_t checkImpl(const SpoofImpl* This, const UnicodeString& id, CheckResult* checkResult, UErrorCode* status) { |
| U_ASSERT(This != NULL); |
| U_ASSERT(checkResult != NULL); |
| checkResult->clear(); |
| int32_t result = 0; |
| |
| if (0 != (This->fChecks & USPOOF_RESTRICTION_LEVEL)) { |
| URestrictionLevel idRestrictionLevel = This->getRestrictionLevel(id, *status); |
| if (idRestrictionLevel > This->fRestrictionLevel) { |
| result |= USPOOF_RESTRICTION_LEVEL; |
| } |
| checkResult->fRestrictionLevel = idRestrictionLevel; |
| } |
| |
| if (0 != (This->fChecks & USPOOF_MIXED_NUMBERS)) { |
| UnicodeSet numerics; |
| This->getNumerics(id, numerics, *status); |
| if (numerics.size() > 1) { |
| result |= USPOOF_MIXED_NUMBERS; |
| } |
| checkResult->fNumerics = numerics; // UnicodeSet::operator= |
| } |
| |
| if (0 != (This->fChecks & USPOOF_HIDDEN_OVERLAY)) { |
| int32_t index = This->findHiddenOverlay(id, *status); |
| if (index != -1) { |
| result |= USPOOF_HIDDEN_OVERLAY; |
| } |
| } |
| |
| |
| if (0 != (This->fChecks & USPOOF_CHAR_LIMIT)) { |
| int32_t i; |
| UChar32 c; |
| int32_t length = id.length(); |
| for (i=0; i<length ;) { |
| c = id.char32At(i); |
| i += U16_LENGTH(c); |
| if (!This->fAllowedCharsSet->contains(c)) { |
| result |= USPOOF_CHAR_LIMIT; |
| break; |
| } |
| } |
| } |
| |
| if (0 != (This->fChecks & USPOOF_INVISIBLE)) { |
| // This check needs to be done on NFD input |
| UnicodeString nfdText; |
| gNfdNormalizer->normalize(id, nfdText, *status); |
| int32_t nfdLength = nfdText.length(); |
| |
| // scan for more than one occurence of the same non-spacing mark |
| // in a sequence of non-spacing marks. |
| int32_t i; |
| UChar32 c; |
| UChar32 firstNonspacingMark = 0; |
| UBool haveMultipleMarks = FALSE; |
| UnicodeSet marksSeenSoFar; // Set of combining marks in a single combining sequence. |
| |
| for (i=0; i<nfdLength ;) { |
| c = nfdText.char32At(i); |
| i += U16_LENGTH(c); |
| if (u_charType(c) != U_NON_SPACING_MARK) { |
| firstNonspacingMark = 0; |
| if (haveMultipleMarks) { |
| marksSeenSoFar.clear(); |
| haveMultipleMarks = FALSE; |
| } |
| continue; |
| } |
| if (firstNonspacingMark == 0) { |
| firstNonspacingMark = c; |
| continue; |
| } |
| if (!haveMultipleMarks) { |
| marksSeenSoFar.add(firstNonspacingMark); |
| haveMultipleMarks = TRUE; |
| } |
| if (marksSeenSoFar.contains(c)) { |
| // report the error, and stop scanning. |
| // No need to find more than the first failure. |
| result |= USPOOF_INVISIBLE; |
| break; |
| } |
| marksSeenSoFar.add(c); |
| } |
| } |
| |
| checkResult->fChecks = result; |
| return checkResult->toCombinedBitmask(This->fChecks); |
| } |
| |
| } // namespace |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_check2UnicodeString(const USpoofChecker *sc, |
| const icu::UnicodeString &id, |
| USpoofCheckResult* checkResult, |
| UErrorCode *status) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return FALSE; |
| } |
| |
| if (checkResult != NULL) { |
| CheckResult* ThisCheckResult = CheckResult::validateThis(checkResult, *status); |
| if (ThisCheckResult == NULL) { |
| return FALSE; |
| } |
| return checkImpl(This, id, ThisCheckResult, status); |
| } else { |
| // Stack-allocate the checkResult since this method doesn't return it |
| CheckResult stackCheckResult; |
| return checkImpl(This, id, &stackCheckResult, status); |
| } |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_getSkeleton(const USpoofChecker *sc, |
| uint32_t type, |
| const UChar *id, int32_t length, |
| UChar *dest, int32_t destCapacity, |
| UErrorCode *status) { |
| |
| SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| if (length<-1 || destCapacity<0 || (destCapacity==0 && dest!=NULL)) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| UnicodeString idStr((length==-1), id, length); // Aliasing constructor |
| UnicodeString destStr; |
| uspoof_getSkeletonUnicodeString(sc, type, idStr, destStr, status); |
| destStr.extract(dest, destCapacity, *status); |
| return destStr.length(); |
| } |
| |
| |
| |
| U_I18N_API UnicodeString & U_EXPORT2 |
| uspoof_getSkeletonUnicodeString(const USpoofChecker *sc, |
| uint32_t /*type*/, |
| const UnicodeString &id, |
| UnicodeString &dest, |
| UErrorCode *status) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return dest; |
| } |
| |
| UnicodeString nfdId; |
| gNfdNormalizer->normalize(id, nfdId, *status); |
| |
| // Apply the skeleton mapping to the NFD normalized input string |
| // Accumulate the skeleton, possibly unnormalized, in a UnicodeString. |
| int32_t inputIndex = 0; |
| UnicodeString skelStr; |
| int32_t normalizedLen = nfdId.length(); |
| for (inputIndex=0; inputIndex < normalizedLen; ) { |
| UChar32 c = nfdId.char32At(inputIndex); |
| inputIndex += U16_LENGTH(c); |
| This->fSpoofData->confusableLookup(c, skelStr); |
| } |
| |
| gNfdNormalizer->normalize(skelStr, dest, *status); |
| return dest; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_getSkeletonUTF8(const USpoofChecker *sc, |
| uint32_t type, |
| const char *id, int32_t length, |
| char *dest, int32_t destCapacity, |
| UErrorCode *status) { |
| SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| if (length<-1 || destCapacity<0 || (destCapacity==0 && dest!=NULL)) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| UnicodeString srcStr = UnicodeString::fromUTF8(StringPiece(id, length>=0 ? length : static_cast<int32_t>(uprv_strlen(id)))); |
| UnicodeString destStr; |
| uspoof_getSkeletonUnicodeString(sc, type, srcStr, destStr, status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| |
| int32_t lengthInUTF8 = 0; |
| u_strToUTF8(dest, destCapacity, &lengthInUTF8, |
| destStr.getBuffer(), destStr.length(), status); |
| return lengthInUTF8; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_serialize(USpoofChecker *sc,void *buf, int32_t capacity, UErrorCode *status) { |
| SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| U_ASSERT(U_FAILURE(*status)); |
| return 0; |
| } |
| |
| return This->fSpoofData->serialize(buf, capacity, *status); |
| } |
| |
| U_CAPI const USet * U_EXPORT2 |
| uspoof_getInclusionSet(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| return gInclusionSet->toUSet(); |
| } |
| |
| U_CAPI const USet * U_EXPORT2 |
| uspoof_getRecommendedSet(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| return gRecommendedSet->toUSet(); |
| } |
| |
| U_I18N_API const UnicodeSet * U_EXPORT2 |
| uspoof_getInclusionUnicodeSet(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| return gInclusionSet; |
| } |
| |
| U_I18N_API const UnicodeSet * U_EXPORT2 |
| uspoof_getRecommendedUnicodeSet(UErrorCode *status) { |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| return gRecommendedSet; |
| } |
| |
| //------------------ |
| // CheckResult APIs |
| //------------------ |
| |
| U_CAPI USpoofCheckResult* U_EXPORT2 |
| uspoof_openCheckResult(UErrorCode *status) { |
| CheckResult* checkResult = new CheckResult(); |
| if (checkResult == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| return checkResult->asUSpoofCheckResult(); |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uspoof_closeCheckResult(USpoofCheckResult* checkResult) { |
| UErrorCode status = U_ZERO_ERROR; |
| CheckResult* This = CheckResult::validateThis(checkResult, status); |
| delete This; |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_getCheckResultChecks(const USpoofCheckResult *checkResult, UErrorCode *status) { |
| const CheckResult* This = CheckResult::validateThis(checkResult, *status); |
| if (U_FAILURE(*status)) { return 0; } |
| return This->fChecks; |
| } |
| |
| U_CAPI URestrictionLevel U_EXPORT2 |
| uspoof_getCheckResultRestrictionLevel(const USpoofCheckResult *checkResult, UErrorCode *status) { |
| const CheckResult* This = CheckResult::validateThis(checkResult, *status); |
| if (U_FAILURE(*status)) { return USPOOF_UNRESTRICTIVE; } |
| return This->fRestrictionLevel; |
| } |
| |
| U_CAPI const USet* U_EXPORT2 |
| uspoof_getCheckResultNumerics(const USpoofCheckResult *checkResult, UErrorCode *status) { |
| const CheckResult* This = CheckResult::validateThis(checkResult, *status); |
| if (U_FAILURE(*status)) { return NULL; } |
| return This->fNumerics.toUSet(); |
| } |
| |
| |
| |
| #endif // !UCONFIG_NO_NORMALIZATION |
