| // © 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 |
| */ |
| #include "unicode/ubidi.h" |
| #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 = nullptr; |
| static UnicodeSet *gRecommendedSet = nullptr; |
| static const Normalizer2 *gNfdNormalizer = nullptr; |
| static UInitOnce gSpoofInitStaticsOnce {}; |
| |
| namespace { |
| |
| UBool U_CALLCONV |
| uspoof_cleanup() { |
| delete gInclusionSet; |
| gInclusionSet = nullptr; |
| delete gRecommendedSet; |
| gRecommendedSet = nullptr; |
| gNfdNormalizer = nullptr; |
| gSpoofInitStaticsOnce.reset(); |
| return true; |
| } |
| |
| void U_CALLCONV initializeStatics(UErrorCode &status) { |
| gInclusionSet = new UnicodeSet(); |
| gRecommendedSet = new UnicodeSet(); |
| if (gInclusionSet == nullptr || gRecommendedSet == nullptr) { |
| status = U_MEMORY_ALLOCATION_ERROR; |
| delete gInclusionSet; |
| gInclusionSet = nullptr; |
| delete gRecommendedSet; |
| gRecommendedSet = nullptr; |
| return; |
| } |
| gInclusionSet->applyIntPropertyValue(UCHAR_IDENTIFIER_TYPE, U_ID_TYPE_INCLUSION, status); |
| gRecommendedSet->applyIntPropertyValue(UCHAR_IDENTIFIER_TYPE, U_ID_TYPE_RECOMMENDED, status); |
| if (U_FAILURE(status)) { |
| delete gInclusionSet; |
| gInclusionSet = nullptr; |
| delete gRecommendedSet; |
| gRecommendedSet = nullptr; |
| return; |
| } |
| gInclusionSet->freeze(); |
| 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 nullptr; |
| } |
| SpoofImpl *si = new SpoofImpl(*status); |
| if (si == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| if (U_FAILURE(*status)) { |
| delete si; |
| return nullptr; |
| } |
| 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 nullptr; |
| } |
| |
| if (data == nullptr) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return nullptr; |
| } |
| |
| umtx_initOnce(gSpoofInitStaticsOnce, &initializeStatics, *status); |
| if (U_FAILURE(*status)) |
| { |
| return nullptr; |
| } |
| |
| SpoofData *sd = new SpoofData(data, length, *status); |
| if (sd == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| |
| if (U_FAILURE(*status)) { |
| delete sd; |
| return nullptr; |
| } |
| |
| SpoofImpl *si = new SpoofImpl(sd, *status); |
| if (si == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| delete sd; // explicit delete as the destructor for si won't be called. |
| return nullptr; |
| } |
| |
| if (U_FAILURE(*status)) { |
| delete si; // no delete for sd, as the si destructor will delete it. |
| return nullptr; |
| } |
| |
| if (pActualLength != nullptr) { |
| *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 == nullptr) { |
| return nullptr; |
| } |
| SpoofImpl *result = new SpoofImpl(*src, *status); // copy constructor |
| if (result == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| if (U_FAILURE(*status)) { |
| delete result; |
| result = nullptr; |
| } |
| 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 == nullptr) { |
| 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 == nullptr) { |
| 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 != nullptr) { |
| 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 == nullptr) { |
| 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 == nullptr) { |
| 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 == nullptr) { |
| return nullptr; |
| } |
| 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 == nullptr) { |
| return nullptr; |
| } |
| 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 == nullptr) { |
| return; |
| } |
| if (chars->isBogus()) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| UnicodeSet *clonedSet = chars->clone(); |
| if (clonedSet == nullptr || 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 char16_t *id, int32_t length, |
| int32_t *position, |
| UErrorCode *status) { |
| |
| // Backwards compatibility: |
| if (position != nullptr) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2(sc, id, length, nullptr, status); |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_check2(const USpoofChecker *sc, |
| const char16_t* id, int32_t length, |
| USpoofCheckResult* checkResult, |
| UErrorCode *status) { |
| |
| const SpoofImpl *This = SpoofImpl::validateThis(sc, *status); |
| if (This == nullptr) { |
| 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 != nullptr) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2UTF8(sc, id, length, nullptr, 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 char16_t *id1, int32_t length1, |
| const char16_t *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 relevant 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 uint32_t U_EXPORT2 uspoof_areBidiConfusable(const USpoofChecker *sc, UBiDiDirection direction, |
| const char16_t *id1, int32_t length1, |
| const char16_t *id2, int32_t length2, |
| UErrorCode *status) { |
| UnicodeString id1Str((length1 == -1), id1, length1); // Aliasing constructor |
| UnicodeString id2Str((length2 == -1), id2, length2); // Aliasing constructor |
| if (id1Str.isBogus() || id2Str.isBogus()) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| return uspoof_areBidiConfusableUnicodeString(sc, direction, id1Str, id2Str, status); |
| } |
| |
| U_CAPI uint32_t U_EXPORT2 uspoof_areBidiConfusableUTF8(const USpoofChecker *sc, UBiDiDirection direction, |
| const char *id1, int32_t length1, const char *id2, |
| int32_t length2, UErrorCode *status) { |
| 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)))); |
| return uspoof_areBidiConfusableUnicodeString(sc, direction, id1Str, id2Str, status); |
| } |
| |
| U_CAPI uint32_t U_EXPORT2 uspoof_areBidiConfusableUnicodeString(const USpoofChecker *sc, |
| UBiDiDirection direction, |
| 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 UTS 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 relevant 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_getBidiSkeletonUnicodeString(sc, direction, id1, id1Skeleton, status); |
| UnicodeString id2Skeleton; |
| uspoof_getBidiSkeletonUnicodeString(sc, direction, 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 |
| uint32_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 |
| return result & This->fChecks; |
| } |
| |
| |
| U_CAPI int32_t U_EXPORT2 |
| uspoof_checkUnicodeString(const USpoofChecker *sc, |
| const icu::UnicodeString &id, |
| int32_t *position, |
| UErrorCode *status) { |
| |
| // Backwards compatibility: |
| if (position != nullptr) { |
| *position = 0; |
| } |
| |
| // Delegate to uspoof_check2 |
| return uspoof_check2UnicodeString(sc, id, nullptr, status); |
| } |
| |
| namespace { |
| |
| int32_t checkImpl(const SpoofImpl* This, const UnicodeString& id, CheckResult* checkResult, UErrorCode* status) { |
| U_ASSERT(This != nullptr); |
| U_ASSERT(checkResult != nullptr); |
| 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 occurrence 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 == nullptr) { |
| return false; |
| } |
| |
| if (checkResult != nullptr) { |
| CheckResult* ThisCheckResult = CheckResult::validateThis(checkResult, *status); |
| if (ThisCheckResult == nullptr) { |
| 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 char16_t *id, int32_t length, |
| char16_t *dest, int32_t destCapacity, |
| UErrorCode *status) { |
| |
| SpoofImpl::validateThis(sc, *status); |
| if (U_FAILURE(*status)) { |
| return 0; |
| } |
| if (length<-1 || destCapacity<0 || (destCapacity==0 && dest!=nullptr)) { |
| *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_CAPI int32_t U_EXPORT2 uspoof_getBidiSkeleton(const USpoofChecker *sc, UBiDiDirection direction, |
| const UChar *id, int32_t length, UChar *dest, |
| int32_t destCapacity, UErrorCode *status) { |
| UnicodeString idStr((length == -1), id, length); // Aliasing constructor |
| if (idStr.isBogus()) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| UnicodeString destStr; |
| uspoof_getBidiSkeletonUnicodeString(sc, direction, idStr, destStr, status); |
| return destStr.extract(dest, destCapacity, *status); |
| } |
| |
| |
| |
| U_I18N_API UnicodeString &U_EXPORT2 uspoof_getBidiSkeletonUnicodeString(const USpoofChecker *sc, |
| UBiDiDirection direction, |
| const UnicodeString &id, |
| UnicodeString &dest, |
| UErrorCode *status) { |
| dest.remove(); |
| if (direction != UBIDI_LTR && direction != UBIDI_RTL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return dest; |
| } |
| UBiDi *bidi = ubidi_open(); |
| ubidi_setPara(bidi, id.getBuffer(), id.length(), direction, |
| /*embeddingLevels*/ nullptr, status); |
| if (U_FAILURE(*status)) { |
| ubidi_close(bidi); |
| return dest; |
| } |
| UnicodeString reordered; |
| int32_t const size = ubidi_getProcessedLength(bidi); |
| UChar* const reorderedBuffer = reordered.getBuffer(size); |
| if (reorderedBuffer == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| ubidi_close(bidi); |
| return dest; |
| } |
| ubidi_writeReordered(bidi, reorderedBuffer, size, |
| UBIDI_KEEP_BASE_COMBINING | UBIDI_DO_MIRRORING, status); |
| reordered.releaseBuffer(size); |
| ubidi_close(bidi); |
| |
| if (U_FAILURE(*status)) { |
| return dest; |
| } |
| |
| // The type parameter is deprecated since ICU 58; any number may be passed. |
| constexpr uint32_t deprecatedType = 58; |
| return uspoof_getSkeletonUnicodeString(sc, deprecatedType, reordered, dest, status); |
| } |
| |
| |
| |
| 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); |
| if (!u_hasBinaryProperty(c, UCHAR_DEFAULT_IGNORABLE_CODE_POINT)) { |
| 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!=nullptr)) { |
| *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_getBidiSkeletonUTF8(const USpoofChecker *sc, UBiDiDirection direction, |
| const char *id, int32_t length, char *dest, |
| int32_t destCapacity, UErrorCode *status) { |
| if (length < -1) { |
| *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_getBidiSkeletonUnicodeString(sc, direction, 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 == nullptr) { |
| 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 == nullptr) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| 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 nullptr; } |
| return This->fNumerics.toUSet(); |
| } |
| |
| |
| |
| #endif // !UCONFIG_NO_NORMALIZATION |
