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check data needed to fulfil ras claims before allocating

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Change-Id: Ifdd820e4ea4287f97cc07cb86c0a180d06081449
This commit is contained in:
Caolán McNamara
2017-02-14 11:33:44 +00:00
parent 5e4fb24278
commit dfc58d2db7
1 changed files with 10 additions and 2 deletions
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12
filter/source/graphicfilter/iras/iras.cxx
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@@ -168,6 +168,14 @@ bool RASReader::ReadRAS(Graphic & rGraphic)
if (!bOk)
return false;
if (mnType != RAS_TYPE_BYTE_ENCODED) //simple raw format
{
if (m_rRAS.remainingSize() < static_cast<sal_uInt64>(mnHeight) * mnWidth * mnDepth / 8)
{
return false;
}
}
Bitmap aBmp(Size(mnWidth, mnHeight), mnDstBitsPerPix);
Bitmap::ScopedWriteAccess pAcc(aBmp);
if (pAcc == nullptr)
@@ -178,6 +186,7 @@ bool RASReader::ReadRAS(Graphic & rGraphic)
pAcc->SetPalette(aPalette);
}
// Bitmap-Daten einlesen
mbStatus = ImplReadBody(pAcc.get());
@@ -191,7 +200,7 @@ bool RASReader::ImplReadHeader()
{
m_rRAS.ReadInt32(mnWidth).ReadInt32(mnHeight).ReadInt32(mnDepth).ReadInt32(mnImageDatSize).ReadInt32(mnType).ReadInt32(mnColorMapType).ReadInt32(mnColorMapSize);
if (mnWidth <= 0 || mnHeight <= 0 || mnImageDatSize <= 0 || !m_rRAS.good())
if (!m_rRAS.good() || mnWidth <= 0 || mnHeight <= 0 || mnImageDatSize <= 0)
mbStatus = false;
switch ( mnDepth )
@@ -223,7 +232,6 @@ bool RASReader::ImplReadHeader()
return mbStatus;
}
bool RASReader::ImplReadBody(BitmapWriteAccess * pAcc)
{
sal_Int32 x, y;