mirror of https://github.com/FreeRDP/FreeRDP
libfreerdp-codec: improve ClearCodec error checking
This commit is contained in:
parent
7489675ab9
commit
44edb3025f
|
@ -73,7 +73,6 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
UINT32 bandsByteCount;
|
||||
UINT32 subcodecByteCount;
|
||||
UINT32 runLengthFactor;
|
||||
UINT32 pixelX, pixelY;
|
||||
UINT32 pixelIndex = 0;
|
||||
UINT32 pixelCount = 0;
|
||||
BYTE* pSrcPixel8 = NULL;
|
||||
|
@ -92,12 +91,15 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (SrcSize < 2)
|
||||
return -1003;
|
||||
|
||||
if ((nWidth > 0xFFFF) || (nHeight > 0xFFFF))
|
||||
return -1004;
|
||||
|
||||
glyphFlags = pSrcData[0];
|
||||
seqNumber = pSrcData[1];
|
||||
offset += 2;
|
||||
|
||||
if (seqNumber != clear->seqNumber)
|
||||
return -1004;
|
||||
return -1005;
|
||||
|
||||
clear->seqNumber = (seqNumber + 1) % 256;
|
||||
|
||||
|
@ -110,21 +112,21 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
//printf("glyphFlags: 0x%02X seqNumber: %d\n", glyphFlags, seqNumber);
|
||||
|
||||
if ((glyphFlags & CLEARCODEC_FLAG_GLYPH_HIT) && !(glyphFlags & CLEARCODEC_FLAG_GLYPH_INDEX))
|
||||
return -1005;
|
||||
return -1006;
|
||||
|
||||
if (glyphFlags & CLEARCODEC_FLAG_GLYPH_INDEX)
|
||||
{
|
||||
if ((nWidth * nHeight) > (1024 * 1024))
|
||||
return -1006;
|
||||
return -1007;
|
||||
|
||||
if (SrcSize < 4)
|
||||
return -1007;
|
||||
return -1008;
|
||||
|
||||
glyphIndex = *((UINT16*) &pSrcData[2]);
|
||||
offset += 2;
|
||||
|
||||
if (glyphIndex >= 4000)
|
||||
return -1008;
|
||||
return -1009;
|
||||
|
||||
if (glyphFlags & CLEARCODEC_FLAG_GLYPH_HIT)
|
||||
{
|
||||
|
@ -136,7 +138,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
glyphData = clear->GlyphCache[glyphIndex];
|
||||
|
||||
if (!glyphData)
|
||||
return -1009;
|
||||
return -1010;
|
||||
|
||||
nSrcStep = nWidth * 4;
|
||||
pSrcPixel8 = glyphData;
|
||||
|
@ -156,7 +158,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
/* Read composition payload header parameters */
|
||||
|
||||
if ((SrcSize - offset) < 12)
|
||||
return -1010;
|
||||
return -1011;
|
||||
|
||||
residualByteCount = *((UINT32*) &pSrcData[offset]);
|
||||
bandsByteCount = *((UINT32*) &pSrcData[offset + 4]);
|
||||
|
@ -172,17 +174,28 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
BYTE* residualData;
|
||||
|
||||
if ((SrcSize - offset) < residualByteCount)
|
||||
return -1011;
|
||||
return -1012;
|
||||
|
||||
suboffset = 0;
|
||||
residualData = &pSrcData[offset];
|
||||
|
||||
if ((nWidth * nHeight * 4) > clear->TempSize)
|
||||
{
|
||||
clear->TempSize = (nWidth * nHeight * 4);
|
||||
clear->TempBuffer = (BYTE*) realloc(clear->TempBuffer, clear->TempSize);
|
||||
|
||||
if (!clear->TempBuffer)
|
||||
return -1013;
|
||||
}
|
||||
|
||||
pixelIndex = 0;
|
||||
pixelCount = nWidth * nHeight;
|
||||
pDstPixel32 = (UINT32*) clear->TempBuffer;
|
||||
|
||||
while (suboffset < residualByteCount)
|
||||
{
|
||||
if ((residualByteCount - suboffset) < 4)
|
||||
return -1012;
|
||||
return -1014;
|
||||
|
||||
color = RGB32(residualData[suboffset + 2], residualData[suboffset + 1], residualData[suboffset + 0]);
|
||||
suboffset += 3;
|
||||
|
@ -193,7 +206,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (runLengthFactor >= 0xFF)
|
||||
{
|
||||
if ((residualByteCount - suboffset) < 2)
|
||||
return -1013;
|
||||
return -1015;
|
||||
|
||||
runLengthFactor = (UINT32) *((UINT16*) &residualData[suboffset]);
|
||||
suboffset += 2;
|
||||
|
@ -201,42 +214,38 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (runLengthFactor >= 0xFFFF)
|
||||
{
|
||||
if ((residualByteCount - suboffset) < 4)
|
||||
return -1014;
|
||||
return -1016;
|
||||
|
||||
runLengthFactor = *((UINT32*) &residualData[suboffset]);
|
||||
suboffset += 4;
|
||||
}
|
||||
}
|
||||
|
||||
pixelX = (pixelIndex % nWidth);
|
||||
pixelY = (pixelIndex - pixelX) / nWidth;
|
||||
pixelCount = runLengthFactor;
|
||||
if ((pixelIndex + runLengthFactor) > pixelCount)
|
||||
return -1017;
|
||||
|
||||
while (pixelCount > 0)
|
||||
for (i = 0; i < runLengthFactor; i++)
|
||||
{
|
||||
count = nWidth - pixelX;
|
||||
|
||||
if (count > pixelCount)
|
||||
count = pixelCount;
|
||||
|
||||
pDstPixel32 = (UINT32*) &pDstData[((nYDst + pixelY) * nDstStep) + ((nXDst + pixelX) * 4)];
|
||||
pixelCount -= count;
|
||||
|
||||
while (count--)
|
||||
{
|
||||
*pDstPixel32 = color;
|
||||
pDstPixel32++;
|
||||
}
|
||||
|
||||
pixelX = 0;
|
||||
pixelY++;
|
||||
*pDstPixel32 = color;
|
||||
pDstPixel32++;
|
||||
}
|
||||
|
||||
pixelIndex += runLengthFactor;
|
||||
}
|
||||
|
||||
if (pixelIndex != (nWidth * nHeight))
|
||||
return -1015;
|
||||
nSrcStep = nWidth * 4;
|
||||
pSrcPixel8 = clear->TempBuffer;
|
||||
pDstPixel8 = &pDstData[(nYDst * nDstStep) + (nXDst * 4)];
|
||||
|
||||
if (pixelIndex != pixelCount)
|
||||
return -1018;
|
||||
|
||||
for (y = 0; y < nHeight; y++)
|
||||
{
|
||||
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
|
||||
pSrcPixel8 += nSrcStep;
|
||||
pDstPixel8 += nDstStep;
|
||||
}
|
||||
|
||||
offset += residualByteCount;
|
||||
}
|
||||
|
@ -247,7 +256,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
UINT32 suboffset;
|
||||
|
||||
if ((SrcSize - offset) < bandsByteCount)
|
||||
return -1016;
|
||||
return -1019;
|
||||
|
||||
suboffset = 0;
|
||||
bandsData = &pSrcData[offset];
|
||||
|
@ -273,7 +282,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
CLEAR_VBAR_ENTRY* vBarShortEntry;
|
||||
|
||||
if ((bandsByteCount - suboffset) < 11)
|
||||
return -1017;
|
||||
return -1020;
|
||||
|
||||
xStart = *((UINT16*) &bandsData[suboffset]);
|
||||
xEnd = *((UINT16*) &bandsData[suboffset + 2]);
|
||||
|
@ -285,10 +294,10 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
suboffset += 3;
|
||||
|
||||
if (xEnd < xStart)
|
||||
return -1018;
|
||||
return -1021;
|
||||
|
||||
if (yEnd < yStart)
|
||||
return -1019;
|
||||
return -1022;
|
||||
|
||||
vBarCount = (xEnd - xStart) + 1;
|
||||
|
||||
|
@ -301,7 +310,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBar = &bandsData[suboffset];
|
||||
|
||||
if ((bandsByteCount - suboffset) < 2)
|
||||
return -1020;
|
||||
return -1023;
|
||||
|
||||
vBarHeader = *((UINT16*) &vBar[0]);
|
||||
suboffset += 2;
|
||||
|
@ -309,17 +318,17 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBarHeight = (yEnd - yStart + 1);
|
||||
|
||||
if (vBarHeight > 52)
|
||||
return -1021;
|
||||
return -1024;
|
||||
|
||||
if ((vBarHeader & 0xC000) == 0x4000) /* SHORT_VBAR_CACHE_HIT */
|
||||
{
|
||||
vBarIndex = (vBarHeader & 0x3FFF);
|
||||
|
||||
if (vBarIndex >= 16384)
|
||||
return -1022;
|
||||
return -1025;
|
||||
|
||||
if ((bandsByteCount - suboffset) < 1)
|
||||
return -1023;
|
||||
return -1026;
|
||||
|
||||
vBarYOn = vBar[2];
|
||||
suboffset += 1;
|
||||
|
@ -330,12 +339,12 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBarShortPixelCount = (yEnd - yStart + 1 - vBarYOn); /* should be maximum value */
|
||||
|
||||
if (clear->ShortVBarStorageCursor >= 16384)
|
||||
return -1024;
|
||||
return -1027;
|
||||
|
||||
vBarShortEntry = &(clear->ShortVBarStorage[clear->ShortVBarStorageCursor]);
|
||||
|
||||
if (!vBarShortEntry)
|
||||
return -1025;
|
||||
return -1028;
|
||||
|
||||
vBarShortPixelCount = vBarShortEntry->count;
|
||||
|
||||
|
@ -347,22 +356,22 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBarYOff = ((vBarHeader >> 8) & 0x3F);
|
||||
|
||||
if (vBarYOff < vBarYOn)
|
||||
return -1026;
|
||||
return -1029;
|
||||
|
||||
pSrcPixel8 = &vBar[2];
|
||||
vBarShortPixelCount = (vBarYOff - vBarYOn);
|
||||
|
||||
if (vBarShortPixelCount > 52)
|
||||
return -1027;
|
||||
return -1030;
|
||||
|
||||
//printf("SHORT_VBAR_CACHE_MISS: vBarYOn: %d vBarYOff: %d vBarPixelCount: %d Cursor: %d / %d\n",
|
||||
// vBarYOn, vBarYOff, vBarShortPixelCount, clear->VBarStorageCursor, clear->ShortVBarStorageCursor);
|
||||
|
||||
if ((bandsByteCount - suboffset) < (vBarShortPixelCount * 3))
|
||||
return -1028;
|
||||
return -1031;
|
||||
|
||||
if (clear->ShortVBarStorageCursor >= 16384)
|
||||
return -1029;
|
||||
return -1032;
|
||||
|
||||
vBarShortEntry = &(clear->ShortVBarStorage[clear->ShortVBarStorageCursor]);
|
||||
|
||||
|
@ -370,7 +379,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBarShortEntry->pixels = (UINT32*) malloc(52 * 4);
|
||||
|
||||
if (!vBarShortEntry->pixels)
|
||||
return -1030;
|
||||
return -1033;
|
||||
|
||||
pDstPixel32 = vBarShortEntry->pixels;
|
||||
|
||||
|
@ -396,19 +405,19 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
// vBarIndex, clear->VBarStorageCursor, clear->ShortVBarStorageCursor);
|
||||
|
||||
if (vBarIndex >= 32768)
|
||||
return -1031;
|
||||
return -1034;
|
||||
|
||||
vBarEntry = &(clear->VBarStorage[vBarIndex]);
|
||||
}
|
||||
else
|
||||
{
|
||||
return -1032; /* invalid vBarHeader */
|
||||
return -1035; /* invalid vBarHeader */
|
||||
}
|
||||
|
||||
if (vBarUpdate)
|
||||
{
|
||||
if (clear->VBarStorageCursor >= 32768)
|
||||
return -1033;
|
||||
return -1036;
|
||||
|
||||
vBarEntry = &(clear->VBarStorage[clear->VBarStorageCursor]);
|
||||
|
||||
|
@ -416,7 +425,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
vBarEntry->pixels = (UINT32*) malloc(52 * 4);
|
||||
|
||||
if (!vBarEntry->pixels)
|
||||
return -1034;
|
||||
return -1037;
|
||||
|
||||
vBarPixelCount = vBarHeight;
|
||||
pDstPixel32 = vBarEntry->pixels;
|
||||
|
@ -524,7 +533,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
UINT32 suboffset;
|
||||
|
||||
if ((SrcSize - offset) < subcodecByteCount)
|
||||
return -1035;
|
||||
return -1038;
|
||||
|
||||
suboffset = 0;
|
||||
subcodecs = &pSrcData[offset];
|
||||
|
@ -532,7 +541,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
while (suboffset < subcodecByteCount)
|
||||
{
|
||||
if ((subcodecByteCount - suboffset) < 13)
|
||||
return -1036;
|
||||
return -1039;
|
||||
|
||||
xStart = *((UINT16*) &subcodecs[suboffset]);
|
||||
yStart = *((UINT16*) &subcodecs[suboffset + 2]);
|
||||
|
@ -546,18 +555,24 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
// bitmapDataByteCount, subcodecByteCount, suboffset, subcodecId);
|
||||
|
||||
if ((subcodecByteCount - suboffset) < bitmapDataByteCount)
|
||||
return -1037;
|
||||
return -1040;
|
||||
|
||||
nXDstRel = nXDst + xStart;
|
||||
nYDstRel = nYDst + yStart;
|
||||
|
||||
if (width > nWidth)
|
||||
return -1041;
|
||||
|
||||
if (height > nHeight)
|
||||
return -1042;
|
||||
|
||||
if ((width * height * 4) > clear->TempSize)
|
||||
{
|
||||
clear->TempSize = (width * height * 4);
|
||||
clear->TempBuffer = (BYTE*) realloc(clear->TempBuffer, clear->TempSize);
|
||||
|
||||
if (!clear->TempBuffer)
|
||||
return -1038;
|
||||
return -1043;
|
||||
}
|
||||
|
||||
bitmapData = &subcodecs[suboffset];
|
||||
|
@ -565,7 +580,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (subcodecId == 0) /* Uncompressed */
|
||||
{
|
||||
if (bitmapDataByteCount != (width * height * 3))
|
||||
return -1039;
|
||||
return -1044;
|
||||
|
||||
pSrcPixel8 = bitmapData;
|
||||
|
||||
|
@ -584,7 +599,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
else if (subcodecId == 1) /* NSCodec */
|
||||
{
|
||||
if (nsc_process_message(clear->nsc, 32, width, height, bitmapData, bitmapDataByteCount) < 0)
|
||||
return -1040;
|
||||
return -1045;
|
||||
|
||||
nSrcStep = width * 4;
|
||||
pSrcPixel8 = clear->nsc->BitmapData;
|
||||
|
@ -612,7 +627,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
bitmapDataOffset = 1 + (paletteCount * 3);
|
||||
|
||||
if (paletteCount > 127)
|
||||
return -1041;
|
||||
return -1046;
|
||||
|
||||
for (i = 0; i < paletteCount; i++)
|
||||
{
|
||||
|
@ -620,7 +635,8 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
pSrcPixel8 += 3;
|
||||
}
|
||||
|
||||
pixelCount = 0;
|
||||
pixelIndex = 0;
|
||||
pixelCount = width * height;
|
||||
pDstPixel32 = (UINT32*) clear->TempBuffer;
|
||||
|
||||
numBits = CLEAR_LOG2_FLOOR[paletteCount - 1] + 1;
|
||||
|
@ -628,7 +644,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
while (bitmapDataOffset < bitmapDataByteCount)
|
||||
{
|
||||
if ((bitmapDataByteCount - bitmapDataOffset) < 2)
|
||||
return -1042;
|
||||
return -1047;
|
||||
|
||||
stopIndex = bitmapData[bitmapDataOffset] & CLEAR_8BIT_MASKS[numBits];
|
||||
suiteDepth = (bitmapData[bitmapDataOffset] >> numBits) & CLEAR_8BIT_MASKS[(8 - numBits)];
|
||||
|
@ -641,7 +657,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (runLengthFactor >= 0xFF)
|
||||
{
|
||||
if ((bitmapDataByteCount - bitmapDataOffset) < 2)
|
||||
return -1043;
|
||||
return -1048;
|
||||
|
||||
runLengthFactor = (UINT32) *((UINT16*) &bitmapData[bitmapDataOffset]);
|
||||
bitmapDataOffset += 2;
|
||||
|
@ -649,7 +665,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
if (runLengthFactor >= 0xFFFF)
|
||||
{
|
||||
if ((bitmapDataByteCount - bitmapDataOffset) < 4)
|
||||
return -1044;
|
||||
return -1049;
|
||||
|
||||
runLengthFactor = *((UINT32*) &bitmapData[bitmapDataOffset]);
|
||||
bitmapDataOffset += 4;
|
||||
|
@ -657,40 +673,46 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
}
|
||||
|
||||
if (startIndex >= paletteCount)
|
||||
return -1045;
|
||||
return -1050;
|
||||
|
||||
if (stopIndex >= paletteCount)
|
||||
return -1046;
|
||||
return -1051;
|
||||
|
||||
suiteIndex = startIndex;
|
||||
color = palette[suiteIndex];
|
||||
|
||||
if ((pixelIndex + runLengthFactor) > pixelCount)
|
||||
return -1052;
|
||||
|
||||
for (i = 0; i < runLengthFactor; i++)
|
||||
{
|
||||
*pDstPixel32 = color;
|
||||
pDstPixel32++;
|
||||
}
|
||||
|
||||
pixelIndex += runLengthFactor;
|
||||
|
||||
if ((pixelIndex + (suiteDepth + 1)) > pixelCount)
|
||||
return -1053;
|
||||
|
||||
for (i = 0; i <= suiteDepth; i++)
|
||||
{
|
||||
*pDstPixel32 = palette[suiteIndex++];
|
||||
pDstPixel32++;
|
||||
}
|
||||
|
||||
pixelCount += (runLengthFactor + suiteDepth + 1);
|
||||
pixelIndex += (suiteDepth + 1);
|
||||
}
|
||||
|
||||
nSrcStep = width * 4;
|
||||
pSrcPixel8 = clear->TempBuffer;
|
||||
pDstPixel8 = &pDstData[(nYDstRel * nDstStep) + (nXDstRel * 4)];
|
||||
|
||||
if (pixelCount != (width * height))
|
||||
return -1047;
|
||||
if (pixelIndex != pixelCount)
|
||||
return -1054;
|
||||
|
||||
for (y = 0; (y < height) && (pixelCount > 0); y++)
|
||||
for (y = 0; y < height; y++)
|
||||
{
|
||||
count = (width > pixelCount) ? pixelCount : width;
|
||||
nSrcStep = count * 4;
|
||||
|
||||
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
|
||||
pSrcPixel8 += nSrcStep;
|
||||
pDstPixel8 += nDstStep;
|
||||
|
@ -699,7 +721,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
}
|
||||
else
|
||||
{
|
||||
return -1048;
|
||||
return -1055;
|
||||
}
|
||||
|
||||
suboffset += bitmapDataByteCount;
|
||||
|
@ -721,7 +743,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
glyphData = clear->GlyphCache[glyphIndex];
|
||||
|
||||
if (!glyphData)
|
||||
return -1049;
|
||||
return -1056;
|
||||
|
||||
nSrcStep = nWidth * 4;
|
||||
pDstPixel8 = glyphData;
|
||||
|
@ -736,7 +758,7 @@ int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
|
|||
}
|
||||
|
||||
if (offset != SrcSize)
|
||||
return -1050;
|
||||
return -1057;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue