| /* |
| *************************************************************************** |
| * Copyright (C) 2008-2015, International Business Machines Corporation |
| * and others. All Rights Reserved. |
| *************************************************************************** |
| * file name: uspoof.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2008Feb13 |
| * created by: Andy Heninger |
| * |
| * Unicode Spoof Detection |
| */ |
| #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 "identifier_info.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 SpoofData *gDefaultSpoofData = NULL; |
| static UInitOnce gSpoofInitStaticsOnce = U_INITONCE_INITIALIZER; |
| static UInitOnce gSpoofInitDefaultOnce = U_INITONCE_INITIALIZER; |
| |
| static UBool U_CALLCONV |
| uspoof_cleanup(void) { |
| delete gInclusionSet; |
| gInclusionSet = NULL; |
| delete gRecommendedSet; |
| gRecommendedSet = NULL; |
| gNfdNormalizer = NULL; |
| if (gDefaultSpoofData) { |
| gDefaultSpoofData->removeReference(); // Will delete, assuming all user-level spoof checkers were closed. |
| } |
| gDefaultSpoofData = NULL; |
| gSpoofInitStaticsOnce.reset(); |
| gSpoofInitDefaultOnce.reset(); |
| return TRUE; |
| } |
| |
| static void U_CALLCONV initializeStatics(UErrorCode &status) { |
| static const char *inclusionPat = |
| "[\\u0027\\u002D-\\u002E\\u003A\\u00B7\\u0375\\u058A\\u05F3-\\u05F4" |
| "\\u06FD-\\u06FE\\u0F0B\\u200C-\\u200D\\u2010\\u2019\\u2027\\u30A0\\u30FB]"; |
| gInclusionSet = new UnicodeSet(UnicodeString(inclusionPat, -1, US_INV), status); |
| gInclusionSet->freeze(); |
| |
| // Note: data from http://unicode.org/Public/security/latest/xidmodifications.txt version 8.0.0 |
| // There is no tooling to generate this from the .txt file, hand extracted with editor macros. |
| // Ultimately, data will be available as character properties, eliminating this. |
| // Note: concatenated string constants do not work with UNICODE_STRING_SIMPLE on all platforms. |
| static const char *recommendedPat = |
| "[\\u0030-\\u0039\\u0041-\\u005A\\u005F\\u0061-\\u007A\\u00C0-\\u00D6\\u00D8-\\u00F6" |
| "\\u00F8-\\u0131\\u0134-\\u013E\\u0141-\\u0148\\u014A-\\u017E\\u018F\\u01A0-\\u01A1" |
| "\\u01AF-\\u01B0\\u01CD-\\u01DC\\u01DE-\\u01E3\\u01E6-\\u01F0\\u01F4-\\u01F5\\u01F8-\\u021B" |
| "\\u021E-\\u021F\\u0226-\\u0233\\u0259\\u02BB-\\u02BC\\u02EC\\u0300-\\u0304\\u0306-\\u030C" |
| "\\u030F-\\u0311\\u0313-\\u0314\\u031B\\u0323-\\u0328\\u032D-\\u032E\\u0330-\\u0331" |
| "\\u0335\\u0338-\\u0339\\u0342\\u0345\\u037B-\\u037D\\u0386\\u0388-\\u038A\\u038C" |
| "\\u038E-\\u03A1\\u03A3-\\u03CE\\u03FC-\\u045F\\u048A-\\u0529\\u052E-\\u052F\\u0531-\\u0556" |
| "\\u0559\\u0561-\\u0586\\u05B4\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0620-\\u063F\\u0641-\\u0655" |
| "\\u0660-\\u0669\\u0670-\\u0672\\u0674\\u0679-\\u068D\\u068F-\\u06D3\\u06D5\\u06E5-\\u06E6" |
| "\\u06EE-\\u06FC\\u06FF\\u0750-\\u07B1\\u08A0-\\u08AC\\u08B2\\u0901-\\u094D\\u094F-\\u0950" |
| "\\u0956-\\u0957\\u0960-\\u0963\\u0966-\\u096F\\u0971-\\u0977\\u0979-\\u097F\\u0981-\\u0983" |
| "\\u0985-\\u098C\\u098F-\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9" |
| "\\u09BC-\\u09C4\\u09C7-\\u09C8\\u09CB-\\u09CE\\u09D7\\u09E0-\\u09E3\\u09E6-\\u09F1" |
| "\\u0A01-\\u0A03\\u0A05-\\u0A0A\\u0A0F-\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32" |
| "\\u0A35\\u0A38-\\u0A39\\u0A3C\\u0A3E-\\u0A42\\u0A47-\\u0A48\\u0A4B-\\u0A4D\\u0A5C" |
| "\\u0A66-\\u0A74\\u0A81-\\u0A83\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0" |
| "\\u0AB2-\\u0AB3\\u0AB5-\\u0AB9\\u0ABC-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0AD0" |
| "\\u0AE0-\\u0AE3\\u0AE6-\\u0AEF\\u0B01-\\u0B03\\u0B05-\\u0B0C\\u0B0F-\\u0B10\\u0B13-\\u0B28" |
| "\\u0B2A-\\u0B30\\u0B32-\\u0B33\\u0B35-\\u0B39\\u0B3C-\\u0B43\\u0B47-\\u0B48\\u0B4B-\\u0B4D" |
| "\\u0B56-\\u0B57\\u0B5F-\\u0B61\\u0B66-\\u0B6F\\u0B71\\u0B82-\\u0B83\\u0B85-\\u0B8A" |
| "\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99-\\u0B9A\\u0B9C\\u0B9E-\\u0B9F\\u0BA3-\\u0BA4" |
| "\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD0" |
| "\\u0BD7\\u0BE6-\\u0BEF\\u0C01-\\u0C03\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28" |
| "\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C3D-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55-\\u0C56" |
| "\\u0C60-\\u0C61\\u0C66-\\u0C6F\\u0C82-\\u0C83\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8" |
| "\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBC-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5-\\u0CD6" |
| "\\u0CE0-\\u0CE3\\u0CE6-\\u0CEF\\u0CF1-\\u0CF2\\u0D02-\\u0D03\\u0D05-\\u0D0C\\u0D0E-\\u0D10" |
| "\\u0D12-\\u0D3A\\u0D3D-\\u0D43\\u0D46-\\u0D48\\u0D4A-\\u0D4E\\u0D57\\u0D60-\\u0D61" |
| "\\u0D66-\\u0D6F\\u0D7A-\\u0D7F\\u0D82-\\u0D83\\u0D85-\\u0D8E\\u0D91-\\u0D96\\u0D9A-\\u0DA5" |
| "\\u0DA7-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0DCA\\u0DCF-\\u0DD4\\u0DD6" |
| "\\u0DD8-\\u0DDE\\u0DF2\\u0E01-\\u0E32\\u0E34-\\u0E3A\\u0E40-\\u0E4E\\u0E50-\\u0E59" |
| "\\u0E81-\\u0E82\\u0E84\\u0E87-\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F" |
| "\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA-\\u0EAB\\u0EAD-\\u0EB2\\u0EB4-\\u0EB9\\u0EBB-\\u0EBD" |
| "\\u0EC0-\\u0EC4\\u0EC6\\u0EC8-\\u0ECD\\u0ED0-\\u0ED9\\u0EDE-\\u0EDF\\u0F00\\u0F20-\\u0F29" |
| "\\u0F35\\u0F37\\u0F3E-\\u0F42\\u0F44-\\u0F47\\u0F49-\\u0F4C\\u0F4E-\\u0F51\\u0F53-\\u0F56" |
| "\\u0F58-\\u0F5B\\u0F5D-\\u0F68\\u0F6A-\\u0F6C\\u0F71-\\u0F72\\u0F74\\u0F7A-\\u0F80" |
| "\\u0F82-\\u0F84\\u0F86-\\u0F92\\u0F94-\\u0F97\\u0F99-\\u0F9C\\u0F9E-\\u0FA1\\u0FA3-\\u0FA6" |
| "\\u0FA8-\\u0FAB\\u0FAD-\\u0FB8\\u0FBA-\\u0FBC\\u0FC6\\u1000-\\u1049\\u1050-\\u109D" |
| "\\u10C7\\u10CD\\u10D0-\\u10F0\\u10F7-\\u10FA\\u10FD-\\u10FF\\u1200-\\u1248\\u124A-\\u124D" |
| "\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0" |
| "\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310" |
| "\\u1312-\\u1315\\u1318-\\u135A\\u135D-\\u135F\\u1380-\\u138F\\u1780-\\u17A2\\u17A5-\\u17A7" |
| "\\u17A9-\\u17B3\\u17B6-\\u17CA\\u17D2\\u17D7\\u17DC\\u17E0-\\u17E9\\u1E00-\\u1E99" |
| "\\u1E9E\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D" |
| "\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F70\\u1F72\\u1F74\\u1F76\\u1F78" |
| "\\u1F7A\\u1F7C\\u1F80-\\u1FB4\\u1FB6-\\u1FBA\\u1FBC\\u1FC2-\\u1FC4\\u1FC6-\\u1FC8" |
| "\\u1FCA\\u1FCC\\u1FD0-\\u1FD2\\u1FD6-\\u1FDA\\u1FE0-\\u1FE2\\u1FE4-\\u1FEA\\u1FEC" |
| "\\u1FF2-\\u1FF4\\u1FF6-\\u1FF8\\u1FFA\\u1FFC\\u2D27\\u2D2D\\u2D80-\\u2D96\\u2DA0-\\u2DA6" |
| "\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6" |
| "\\u2DD8-\\u2DDE\\u3005-\\u3007\\u3041-\\u3096\\u3099-\\u309A\\u309D-\\u309E\\u30A1-\\u30FA" |
| "\\u30FC-\\u30FE\\u3105-\\u312D\\u31A0-\\u31BA\\u3400-\\u4DB5\\u4E00-\\u9FD5\\uA660-\\uA661" |
| "\\uA674-\\uA67B\\uA67F\\uA69F\\uA717-\\uA71F\\uA788\\uA78D-\\uA78E\\uA790-\\uA793" |
| "\\uA7A0-\\uA7AA\\uA7FA\\uA9E7-\\uA9FE\\uAA60-\\uAA76\\uAA7A-\\uAA7F\\uAB01-\\uAB06" |
| "\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uAC00-\\uD7A3\\uFA0E-\\uFA0F" |
| "\\uFA11\\uFA13-\\uFA14\\uFA1F\\uFA21\\uFA23-\\uFA24\\uFA27-\\uFA29\\U00020000-\\U0002A6D6" |
| "\\U0002A700-\\U0002B734\\U0002B740-\\U0002B81D\\U0002B820-\\U0002CEA1]"; |
| |
| gRecommendedSet = new UnicodeSet(UnicodeString(recommendedPat, -1, US_INV), status); |
| gRecommendedSet->freeze(); |
| gNfdNormalizer = Normalizer2::getNFDInstance(status); |
| ucln_i18n_registerCleanup(UCLN_I18N_SPOOF, uspoof_cleanup); |
| } |
| |
| static void U_CALLCONV initializeDefaultData(UErrorCode &status) { |
| gDefaultSpoofData = SpoofData::getDefault(status); |
| ucln_i18n_registerCleanup(UCLN_I18N_SPOOF, uspoof_cleanup); |
| } |
| |
| 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); |
| umtx_initOnce(gSpoofInitDefaultOnce, &initializeDefaultData, *status); |
| if (U_FAILURE(*status)) { |
| return NULL; |
| } |
| SpoofImpl *si = new SpoofImpl(gDefaultSpoofData, *status); |
| if (si) { |
| gDefaultSpoofData->addReference(); |
| } |
| if (U_SUCCESS(*status) && si == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| if (U_FAILURE(*status)) { |
| delete si; |
| si = NULL; |
| } |
| return reinterpret_cast<USpoofChecker *>(si); |
| } |
| |
| |
| U_CAPI USpoofChecker * U_EXPORT2 |
| uspoof_openFromSerialized(const void *data, int32_t length, int32_t *pActualLength, |
| UErrorCode *status) { |
| if (U_FAILURE(*status)) { |
| return NULL; |
| } |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| SpoofData *sd = new SpoofData(data, length, *status); |
| SpoofImpl *si = new SpoofImpl(sd, *status); |
| if (U_FAILURE(*status)) { |
| delete sd; |
| delete si; |
| return NULL; |
| } |
| if (sd == NULL || si == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| delete sd; |
| delete si; |
| return NULL; |
| } |
| |
| if (pActualLength != NULL) { |
| *pActualLength = sd->fRawData->fLength; |
| } |
| return reinterpret_cast<USpoofChecker *>(si); |
| } |
| |
| |
| 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 (U_FAILURE(*status)) { |
| delete result; |
| result = NULL; |
| } |
| return reinterpret_cast<USpoofChecker *>(result); |
| } |
| |
| |
| 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; |
| } |
| } |
| |
| 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 = static_cast<UnicodeSet *>(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) { |
| |
| 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_checkUnicodeString(sc, idStr, position, 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) { |
| |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| UnicodeString idStr = UnicodeString::fromUTF8(StringPiece(id, length>=0 ? length : uprv_strlen(id))); |
| int32_t result = uspoof_checkUnicodeString(sc, idStr, position, 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 : uprv_strlen(id1))); |
| UnicodeString id2Str = UnicodeString::fromUTF8(StringPiece(id2, length2>=0? length2 : 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_SINGLE_SCRIPT_CONFUSABLE | USPOOF_MIXED_SCRIPT_CONFUSABLE | |
| USPOOF_WHOLE_SCRIPT_CONFUSABLE)) == 0) { |
| *status = U_INVALID_STATE_ERROR; |
| return 0; |
| } |
| int32_t flagsForSkeleton = This->fChecks & USPOOF_ANY_CASE; |
| |
| int32_t result = 0; |
| IdentifierInfo *identifierInfo = This->getIdentifierInfo(*status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| identifierInfo->setIdentifier(id1, *status); |
| int32_t id1ScriptCount = identifierInfo->getScriptCount(); |
| int32_t id1FirstScript = identifierInfo->getScripts()->nextSetBit(0); |
| identifierInfo->setIdentifier(id2, *status); |
| int32_t id2ScriptCount = identifierInfo->getScriptCount(); |
| int32_t id2FirstScript = identifierInfo->getScripts()->nextSetBit(0); |
| This->releaseIdentifierInfo(identifierInfo); |
| identifierInfo = NULL; |
| |
| if (This->fChecks & USPOOF_SINGLE_SCRIPT_CONFUSABLE) { |
| UnicodeString id1Skeleton; |
| UnicodeString id2Skeleton; |
| if (id1ScriptCount <= 1 && id2ScriptCount <= 1 && id1FirstScript == id2FirstScript) { |
| flagsForSkeleton |= USPOOF_SINGLE_SCRIPT_CONFUSABLE; |
| uspoof_getSkeletonUnicodeString(sc, flagsForSkeleton, id1, id1Skeleton, status); |
| uspoof_getSkeletonUnicodeString(sc, flagsForSkeleton, id2, id2Skeleton, status); |
| if (id1Skeleton == id2Skeleton) { |
| result |= USPOOF_SINGLE_SCRIPT_CONFUSABLE; |
| } |
| } |
| } |
| |
| if (result & USPOOF_SINGLE_SCRIPT_CONFUSABLE) { |
| // If the two inputs are single script confusable they cannot also be |
| // mixed or whole script confusable, according to the UAX39 definitions. |
| // So we can skip those tests. |
| return result; |
| } |
| |
| // Two identifiers are whole script confusable if each is of a single script |
| // and they are mixed script confusable. |
| UBool possiblyWholeScriptConfusables = |
| id1ScriptCount <= 1 && id2ScriptCount <= 1 && (This->fChecks & USPOOF_WHOLE_SCRIPT_CONFUSABLE); |
| |
| // |
| // Mixed Script Check |
| // |
| if ((This->fChecks & USPOOF_MIXED_SCRIPT_CONFUSABLE) || possiblyWholeScriptConfusables ) { |
| // For getSkeleton(), resetting the USPOOF_SINGLE_SCRIPT_CONFUSABLE flag will get us |
| // the mixed script table skeleton, which is what we want. |
| // The Any Case / Lower Case bit in the skelton flags was set at the top of the function. |
| UnicodeString id1Skeleton; |
| UnicodeString id2Skeleton; |
| flagsForSkeleton &= ~USPOOF_SINGLE_SCRIPT_CONFUSABLE; |
| uspoof_getSkeletonUnicodeString(sc, flagsForSkeleton, id1, id1Skeleton, status); |
| uspoof_getSkeletonUnicodeString(sc, flagsForSkeleton, id2, id2Skeleton, status); |
| if (id1Skeleton == id2Skeleton) { |
| result |= USPOOF_MIXED_SCRIPT_CONFUSABLE; |
| if (possiblyWholeScriptConfusables) { |
| 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) { |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == NULL) { |
| return 0; |
| } |
| int32_t result = 0; |
| |
| IdentifierInfo *identifierInfo = NULL; |
| if ((This->fChecks) & (USPOOF_RESTRICTION_LEVEL | USPOOF_MIXED_NUMBERS)) { |
| identifierInfo = This->getIdentifierInfo(*status); |
| if (U_FAILURE(*status)) { |
| goto cleanupAndReturn; |
| } |
| identifierInfo->setIdentifier(id, *status); |
| identifierInfo->setIdentifierProfile(*This->fAllowedCharsSet); |
| } |
| |
| |
| if ((This->fChecks) & USPOOF_RESTRICTION_LEVEL) { |
| URestrictionLevel idRestrictionLevel = identifierInfo->getRestrictionLevel(*status); |
| if (idRestrictionLevel > This->fRestrictionLevel) { |
| result |= USPOOF_RESTRICTION_LEVEL; |
| } |
| if (This->fChecks & USPOOF_AUX_INFO) { |
| result |= idRestrictionLevel; |
| } |
| } |
| |
| if ((This->fChecks) & USPOOF_MIXED_NUMBERS) { |
| const UnicodeSet *numerics = identifierInfo->getNumerics(); |
| if (numerics->size() > 1) { |
| result |= USPOOF_MIXED_NUMBERS; |
| } |
| |
| // TODO: ICU4J returns the UnicodeSet of the numerics found in the identifier. |
| // We have no easy way to do the same in C. |
| // if (checkResult != null) { |
| // checkResult.numerics = numerics; |
| // } |
| } |
| |
| |
| if (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 (This->fChecks & |
| (USPOOF_WHOLE_SCRIPT_CONFUSABLE | USPOOF_MIXED_SCRIPT_CONFUSABLE | USPOOF_INVISIBLE)) { |
| // These are the checks that need to be done on NFD input |
| UnicodeString nfdText; |
| gNfdNormalizer->normalize(id, nfdText, *status); |
| int32_t nfdLength = nfdText.length(); |
| |
| if (This->fChecks & USPOOF_INVISIBLE) { |
| |
| // 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); |
| } |
| } |
| |
| |
| if (This->fChecks & (USPOOF_WHOLE_SCRIPT_CONFUSABLE | USPOOF_MIXED_SCRIPT_CONFUSABLE)) { |
| // The basic test is the same for both whole and mixed script confusables. |
| // Compute the set of scripts that every input character has a confusable in. |
| // For this computation an input character is always considered to be |
| // confusable with itself in its own script. |
| // |
| // If the number of such scripts is two or more, and the input consisted of |
| // characters all from a single script, we have a whole script confusable. |
| // (The two scripts will be the original script and the one that is confusable) |
| // |
| // If the number of such scripts >= one, and the original input contained characters from |
| // more than one script, we have a mixed script confusable. (We can transform |
| // some of the characters, and end up with a visually similar string all in |
| // one script.) |
| |
| if (identifierInfo == NULL) { |
| identifierInfo = This->getIdentifierInfo(*status); |
| if (U_FAILURE(*status)) { |
| goto cleanupAndReturn; |
| } |
| identifierInfo->setIdentifier(id, *status); |
| } |
| |
| int32_t scriptCount = identifierInfo->getScriptCount(); |
| |
| ScriptSet scripts; |
| This->wholeScriptCheck(nfdText, &scripts, *status); |
| int32_t confusableScriptCount = scripts.countMembers(); |
| //printf("confusableScriptCount = %d\n", confusableScriptCount); |
| |
| if ((This->fChecks & USPOOF_WHOLE_SCRIPT_CONFUSABLE) && |
| confusableScriptCount >= 2 && |
| scriptCount == 1) { |
| result |= USPOOF_WHOLE_SCRIPT_CONFUSABLE; |
| } |
| |
| if ((This->fChecks & USPOOF_MIXED_SCRIPT_CONFUSABLE) && |
| confusableScriptCount >= 1 && |
| scriptCount > 1) { |
| result |= USPOOF_MIXED_SCRIPT_CONFUSABLE; |
| } |
| } |
| } |
| |
| cleanupAndReturn: |
| This->releaseIdentifierInfo(identifierInfo); |
| if (position != NULL) { |
| *position = 0; |
| } |
| return result; |
| } |
| |
| |
| 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; |
| } |
| |
| int32_t tableMask = 0; |
| switch (type) { |
| case 0: |
| tableMask = USPOOF_ML_TABLE_FLAG; |
| break; |
| case USPOOF_SINGLE_SCRIPT_CONFUSABLE: |
| tableMask = USPOOF_SL_TABLE_FLAG; |
| break; |
| case USPOOF_ANY_CASE: |
| tableMask = USPOOF_MA_TABLE_FLAG; |
| break; |
| case USPOOF_SINGLE_SCRIPT_CONFUSABLE | USPOOF_ANY_CASE: |
| tableMask = USPOOF_SA_TABLE_FLAG; |
| break; |
| default: |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| 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->confusableLookup(c, tableMask, 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 : 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; |
| } |
| int32_t dataSize = This->fSpoofData->fRawData->fLength; |
| if (capacity < dataSize) { |
| *status = U_BUFFER_OVERFLOW_ERROR; |
| return dataSize; |
| } |
| uprv_memcpy(buf, This->fSpoofData->fRawData, dataSize); |
| return dataSize; |
| } |
| |
| 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; |
| } |
| |
| |
| |
| #endif // !UCONFIG_NO_NORMALIZATION |
