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| author | Caolán McNamara <caolanm@redhat.com> | 2022-03-04 10:38:50 +0000 |
|---|---|---|
| committer | Michael Stahl <michael.stahl@allotropia.de> | 2022-03-11 15:52:13 +0100 |
| commit | 205a73755b02ece750f85f95f7091d490facc3ee (patch) | |
| tree | 521452f5eb07bc8e0ea791bf5d46d639a30d8e86 /vcl | |
| parent | 2c8c221b88f2e2bb5b29a6c1bcce1ea75e98136a (diff) | |
clamp and add some logging like SvmReader
LIBREOFFICE-OWMTGGWJ
Change-Id: I8f744e1ab2684a0f0995abcc3e753a684a3b970a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130982
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
(cherry picked from commit 19add15932e579c931480eed42eeea52d0551897)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131369
Tested-by: Michael Stahl <michael.stahl@allotropia.de>
Diffstat (limited to 'vcl')
| -rw-r--r-- | vcl/source/gdi/svmconverter.cxx | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/vcl/source/gdi/svmconverter.cxx b/vcl/source/gdi/svmconverter.cxx index a9773ffbd682..b1bd726969f5 100644 --- a/vcl/source/gdi/svmconverter.cxx +++ b/vcl/source/gdi/svmconverter.cxx @@ -504,6 +504,23 @@ namespace nFollowingActionCount = remainingActions; return std::min(remainingActions, nFollowingActionCount); } + + void ClampRange(const OUString& rStr, sal_Int32& rIndex, sal_Int32& rLength) + { + const sal_Int32 nStrLength = rStr.getLength(); + + if (rIndex < 0 || rIndex > nStrLength) + { + SAL_WARN("vcl.gdi", "inconsistent offset"); + rIndex = nStrLength; + } + + if (rLength < 0 || rLength > nStrLength - rIndex) + { + SAL_WARN("vcl.gdi", "inconsistent len"); + rLength = nStrLength - rIndex; + } + } } #define LF_FACESIZE 32 @@ -927,6 +944,7 @@ void SVMConverter::ImplConvertFromSVM1( SvStream& rIStm, GDIMetaFile& rMtf ) OUString aStr(OStringToOUString(aByteStr, eActualCharSet)); if ( nUnicodeCommentActionNumber == i ) ImplReadUnicodeComment( nUnicodeCommentStreamPos, rIStm, aStr ); + ClampRange(aStr, nIndex, nLen); rMtf.AddAction( new MetaTextAction( aPt, aStr, nIndex, nLen ) ); } @@ -1017,6 +1035,7 @@ void SVMConverter::ImplConvertFromSVM1( SvStream& rIStm, GDIMetaFile& rMtf ) } if ( nUnicodeCommentActionNumber == i ) ImplReadUnicodeComment( nUnicodeCommentStreamPos, rIStm, aStr ); + ClampRange(aStr, nIndex, nLen); rMtf.AddAction( new MetaTextArrayAction( aPt, aStr, pDXAry.get(), nIndex, nLen ) ); } @@ -1042,6 +1061,7 @@ void SVMConverter::ImplConvertFromSVM1( SvStream& rIStm, GDIMetaFile& rMtf ) OUString aStr(OStringToOUString(aByteStr, eActualCharSet)); if ( nUnicodeCommentActionNumber == i ) ImplReadUnicodeComment( nUnicodeCommentStreamPos, rIStm, aStr ); + ClampRange(aStr, nIndex, nLen); rMtf.AddAction( new MetaStretchTextAction( aPt, nWidth, aStr, nIndex, nLen ) ); } |