diff options
Diffstat (limited to 'intl/icu/source/i18n/uspoof.cpp')
| -rw-r--r-- | intl/icu/source/i18n/uspoof.cpp | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/uspoof.cpp b/intl/icu/source/i18n/uspoof.cpp new file mode 100644 index 0000000000..271caeafff --- /dev/null +++ b/intl/icu/source/i18n/uspoof.cpp @@ -0,0 +1,840 @@ +// © 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/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) { + static const char16_t *inclusionPat = + u"['\\-.\\:\\u00B7\\u0375\\u058A\\u05F3\\u05F4\\u06FD\\u06FE\\u0F0B\\u2010" + u"\\u2019\\u2027\\u30A0\\u30FB]"; + gInclusionSet = new UnicodeSet(UnicodeString(inclusionPat), status); + if (gInclusionSet == nullptr) { + 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\\u0870-\\u0887" + u"\\u0889-\\u088E\\u08A0-\\u08AC\\u08B2\\u08B5-\\u08C9\\u0901-\\u094D\\u094F" + u"\\u0950\\u0956\\u0957\\u0960-\\u0963\\u0966-\\u096F\\u0971-\\u0977\\u0979-" + u"\\u097F\\u0981-\\u0983\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-" + u"\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BC-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CE" + u"\\u09D7\\u09E0-\\u09E3\\u09E6-\\u09F1\\u09FE\\u0A01-\\u0A03\\u0A05-\\u0A0A" + u"\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A35\\u0A38\\u0A39" + u"\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A5C\\u0A66-\\u0A74" + u"\\u0A81-\\u0A83\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0" + u"\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABC-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD" + u"\\u0AD0\\u0AE0-\\u0AE3\\u0AE6-\\u0AEF\\u0AFA-\\u0AFF\\u0B01-\\u0B03\\u0B05-" + u"\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-" + u"\\u0B39\\u0B3C-\\u0B43\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B55-\\u0B57\\u0B5F-" + u"\\u0B61\\u0B66-\\u0B6F\\u0B71\\u0B82\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90" + u"\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-" + u"\\u0BAA\\u0BAE-\\u0BB9\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD0" + u"\\u0BD7\\u0BE6-\\u0BEF\\u0C01-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-" + u"\\u0C33\\u0C35-\\u0C39\\u0C3C-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55" + u"\\u0C56\\u0C5D\\u0C60\\u0C61\\u0C66-\\u0C6F\\u0C80\\u0C82\\u0C83\\u0C85-" + u"\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBC-" + u"\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0CDD\\u0CE0-\\u0CE3" + u"\\u0CE6-\\u0CEF\\u0CF1-\\u0CF3\\u0D00\\u0D02\\u0D03\\u0D05-\\u0D0C\\u0D0E-" + u"\\u0D10\\u0D12-\\u0D3A\\u0D3D-\\u0D43\\u0D46-\\u0D48\\u0D4A-\\u0D4E\\u0D54-" + u"\\u0D57\\u0D60\\u0D61\\u0D66-\\u0D6F\\u0D7A-\\u0D7F\\u0D82\\u0D83\\u0D85-" + u"\\u0D8E\\u0D91-\\u0D96\\u0D9A-\\u0DA5\\u0DA7-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD" + u"\\u0DC0-\\u0DC6\\u0DCA\\u0DCF-\\u0DD4\\u0DD6\\u0DD8-\\u0DDE\\u0DF2\\u0E01-" + u"\\u0E32\\u0E34-\\u0E3A\\u0E40-\\u0E4E\\u0E50-\\u0E59\\u0E81\\u0E82\\u0E84" + u"\\u0E86-\\u0E8A\\u0E8C-\\u0EA3\\u0EA5\\u0EA7-\\u0EB2\\u0EB4-\\u0EBD\\u0EC0-" + u"\\u0EC4\\u0EC6\\u0EC8-\\u0ECE\\u0ED0-\\u0ED9\\u0EDE\\u0EDF\\u0F00\\u0F20-" + u"\\u0F29\\u0F35\\u0F37\\u0F3E-\\u0F42\\u0F44-\\u0F47\\u0F49-\\u0F4C\\u0F4E-" + u"\\u0F51\\u0F53-\\u0F56\\u0F58-\\u0F5B\\u0F5D-\\u0F68\\u0F6A-\\u0F6C\\u0F71" + u"\\u0F72\\u0F74\\u0F7A-\\u0F80\\u0F82-\\u0F84\\u0F86-\\u0F92\\u0F94-\\u0F97" + u"\\u0F99-\\u0F9C\\u0F9E-\\u0FA1\\u0FA3-\\u0FA6\\u0FA8-\\u0FAB\\u0FAD-\\u0FB8" + u"\\u0FBA-\\u0FBC\\u0FC6\\u1000-\\u1049\\u1050-\\u109D\\u10C7\\u10CD\\u10D0-" + u"\\u10F0\\u10F7-\\u10FA\\u10FD-\\u10FF\\u1200-\\u1248\\u124A-\\u124D\\u1250-" + u"\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0" + u"\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-" + u"\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u135D-\\u135F\\u1380-\\u138F\\u1780-" + u"\\u17A2\\u17A5-\\u17A7\\u17A9-\\u17B3\\u17B6-\\u17CD\\u17D0\\u17D2\\u17D7" + u"\\u17DC\\u17E0-\\u17E9\\u1C90-\\u1CBA\\u1CBD-\\u1CBF\\u1E00-\\u1E99\\u1E9E" + u"\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D" + u"\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F70\\u1F72\\u1F74\\u1F76" + u"\\u1F78\\u1F7A\\u1F7C\\u1F80-\\u1FB4\\u1FB6-\\u1FBA\\u1FBC\\u1FC2-\\u1FC4" + u"\\u1FC6-\\u1FC8\\u1FCA\\u1FCC\\u1FD0-\\u1FD2\\u1FD6-\\u1FDA\\u1FE0-\\u1FE2" + u"\\u1FE4-\\u1FEA\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FF8\\u1FFA\\u1FFC\\u2D27" + u"\\u2D2D\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-" + u"\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u3005-" + u"\\u3007\\u3041-\\u3096\\u3099\\u309A\\u309D\\u309E\\u30A1-\\u30FA\\u30FC-" + u"\\u30FE\\u3105-\\u312D\\u312F\\u31A0-\\u31BF\\u3400-\\u4DBF\\u4E00-\\u9FFF" + u"\\uA67F\\uA717-\\uA71F\\uA788\\uA78D\\uA792\\uA793\\uA7AA\\uA7C0-\\uA7CA" + u"\\uA7D0\\uA7D1\\uA7D3\\uA7D5-\\uA7D9\\uA9E7-\\uA9FE\\uAA60-\\uAA76\\uAA7A-" + u"\\uAA7F\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-" + u"\\uAB2E\\uAB66\\uAB67\\uAC00-\\uD7A3\\uFA0E\\uFA0F\\uFA11\\uFA13\\uFA14" + u"\\uFA1F\\uFA21\\uFA23\\uFA24\\uFA27-\\uFA29\\U00011301\\U00011303" + u"\\U0001133B\\U0001133C\\U00016FF0\\U00016FF1\\U0001B11F-\\U0001B122" + u"\\U0001B132\\U0001B150-\\U0001B152\\U0001B155\\U0001B164-\\U0001B167" + u"\\U0001DF00-\\U0001DF1E\\U0001DF25-\\U0001DF2A\\U0001E08F\\U0001E7E0-" + u"\\U0001E7E6\\U0001E7E8-\\U0001E7EB\\U0001E7ED\\U0001E7EE\\U0001E7F0-" + u"\\U0001E7FE\\U00020000-\\U0002A6DF\\U0002A700-\\U0002B739\\U0002B740-" + u"\\U0002B81D\\U0002B820-\\U0002CEA1\\U0002CEB0-\\U0002EBE0\\U00030000-" + u"\\U0003134A\\U00031350-\\U000323AF]"; + + gRecommendedSet = new UnicodeSet(UnicodeString(recommendedPat), status); + if (gRecommendedSet == nullptr) { + 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 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 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_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!=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_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 |