| /* |
| *************************************************************************** |
| * Copyright (C) 2008-2013, 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 UMutex gInitMutex = U_MUTEX_INITIALIZER; |
| |
| static UBool U_CALLCONV |
| uspoof_cleanup(void) { |
| delete gInclusionSet; |
| gInclusionSet = NULL; |
| delete gRecommendedSet; |
| gRecommendedSet = NULL; |
| gNfdNormalizer = NULL; |
| return TRUE; |
| } |
| |
| static void initializeStatics() { |
| Mutex m(&gInitMutex); |
| UErrorCode status = U_ZERO_ERROR; |
| if (gInclusionSet == NULL) { |
| gInclusionSet = new UnicodeSet(UNICODE_STRING_SIMPLE("[\ |
| \\-.\\u00B7\\u05F3\\u05F4\\u0F0B\\u200C\\u200D\\u2019]"), status); |
| gRecommendedSet = new UnicodeSet(UNICODE_STRING_SIMPLE("[\ |
| [0-z\\u00C0-\\u017E\\u01A0\\u01A1\\u01AF\\u01B0\\u01CD-\ |
| \\u01DC\\u01DE-\\u01E3\\u01E6-\\u01F5\\u01F8-\\u021B\\u021E\ |
| \\u021F\\u0226-\\u0233\\u02BB\\u02BC\\u02EC\\u0300-\\u0304\ |
| \\u0306-\\u030C\\u030F-\\u0311\\u0313\\u0314\\u031B\\u0323-\ |
| \\u0328\\u032D\\u032E\\u0330\\u0331\\u0335\\u0338\\u0339\ |
| \\u0342-\\u0345\\u037B-\\u03CE\\u03FC-\\u045F\\u048A-\\u0525\ |
| \\u0531-\\u0586\\u05D0-\\u05F2\\u0621-\\u063F\\u0641-\\u0655\ |
| \\u0660-\\u0669\\u0670-\\u068D\\u068F-\\u06D5\\u06E5\\u06E6\ |
| \\u06EE-\\u06FF\\u0750-\\u07B1\\u0901-\\u0939\\u093C-\\u094D\ |
| \\u0950\\u0960-\\u0972\\u0979-\\u0A4D\\u0A5C-\\u0A74\\u0A81-\ |
| \\u0B43\\u0B47-\\u0B61\\u0B66-\\u0C56\\u0C60\\u0C61\\u0C66-\ |
| \\u0CD6\\u0CE0-\\u0CEF\\u0D02-\\u0D28\\u0D2A-\\u0D39\\u0D3D-\ |
| \\u0D43\\u0D46-\\u0D4D\\u0D57-\\u0D61\\u0D66-\\u0D8E\\u0D91-\ |
| \\u0DA5\\u0DA7-\\u0DDE\\u0DF2\\u0E01-\\u0ED9\\u0F00\\u0F20-\ |
| \\u0F8B\\u0F90-\\u109D\\u10D0-\\u10F0\\u10F7-\\u10FA\\u1200-\ |
| \\u135A\\u135F\\u1380-\\u138F\\u1401-\\u167F\\u1780-\\u17A2\ |
| \\u17A5-\\u17A7\\u17A9-\\u17B3\\u17B6-\\u17CA\\u17D2\\u17D7-\ |
| \\u17DC\\u17E0-\\u17E9\\u1810-\\u18A8\\u18AA-\\u18F5\\u1E00-\ |
| \\u1E99\\u1F00-\\u1FFC\\u2D30-\\u2D65\\u2D80-\\u2DDE\\u3005-\ |
| \\u3007\\u3041-\\u31B7\\u3400-\\u9FCB\\uA000-\\uA48C\\uA67F\ |
| \\uA717-\\uA71F\\uA788\\uAA60-\\uAA7B\\uAC00-\\uD7A3\\uFA0E-\ |
| \\uFA29\\U00020000-\ |
| \\U0002B734]-[[:Cn:][:nfkcqc=n:][:XIDC=n:]]]"), status); |
| gNfdNormalizer = Normalizer2::getNFDInstance(status); |
| } |
| ucln_i18n_registerCleanup(UCLN_I18N_SPOOF, uspoof_cleanup); |
| |
| return; |
| } |
| |
| |
| U_CAPI USpoofChecker * U_EXPORT2 |
| uspoof_open(UErrorCode *status) { |
| if (U_FAILURE(*status)) { |
| return NULL; |
| } |
| initializeStatics(); |
| SpoofImpl *si = new SpoofImpl(SpoofData::getDefault(*status), *status); |
| 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; |
| } |
| initializeStatics(); |
| 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) { |
| *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(); |
| identifierInfo->setIdentifier(id2, *status); |
| int32_t id2ScriptCount = identifierInfo->getScriptCount(); |
| This->releaseIdentifierInfo(identifierInfo); |
| identifierInfo = NULL; |
| |
| if (This->fChecks & USPOOF_SINGLE_SCRIPT_CONFUSABLE) { |
| UnicodeString id1Skeleton; |
| UnicodeString id2Skeleton; |
| if (id1ScriptCount <= 1 && id2ScriptCount <= 1) { |
| 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 *) { |
| initializeStatics(); |
| return gInclusionSet->toUSet(); |
| } |
| |
| U_CAPI const USet * U_EXPORT2 |
| uspoof_getRecommendedSet(UErrorCode *) { |
| initializeStatics(); |
| return gRecommendedSet->toUSet(); |
| } |
| |
| U_I18N_API const UnicodeSet * U_EXPORT2 |
| uspoof_getInclusionUnicodeSet(UErrorCode *) { |
| initializeStatics(); |
| return gInclusionSet; |
| } |
| |
| U_I18N_API const UnicodeSet * U_EXPORT2 |
| uspoof_getRecommendedUnicodeSet(UErrorCode *) { |
| initializeStatics(); |
| return gRecommendedSet; |
| } |
| |
| |
| |
| #endif // !UCONFIG_NO_NORMALIZATION |
