diff options
Diffstat (limited to 'third_party')
| -rw-r--r-- | third_party/libtiff/0025-upstream-OOM-gtTileContig.patch | 459 | ||||
| -rw-r--r-- | third_party/libtiff/README.pdfium | 1 | ||||
| -rw-r--r-- | third_party/libtiff/tif_getimage.c | 122 | ||||
| -rw-r--r-- | third_party/libtiff/tif_read.c | 151 | ||||
| -rw-r--r-- | third_party/libtiff/tiffiop.h | 14 |
5 files changed, 687 insertions, 60 deletions
diff --git a/third_party/libtiff/0025-upstream-OOM-gtTileContig.patch b/third_party/libtiff/0025-upstream-OOM-gtTileContig.patch new file mode 100644 index 0000000000..81492303d8 --- /dev/null +++ b/third_party/libtiff/0025-upstream-OOM-gtTileContig.patch @@ -0,0 +1,459 @@ +diff --git a/third_party/libtiff/tif_getimage.c b/third_party/libtiff/tif_getimage.c +index 84cc1d1a7..d1f1f45ac 100644 +--- a/third_party/libtiff/tif_getimage.c ++++ b/third_party/libtiff/tif_getimage.c +@@ -627,7 +627,7 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + uint32 col, row, y, rowstoread; + tmsize_t pos; + uint32 tw, th; +- unsigned char* buf; ++ unsigned char* buf = NULL; + int32 fromskew, toskew; + int64 safeskew; + uint32 nrow; +@@ -636,13 +636,14 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + int32 this_toskew, leftmost_toskew; + int32 leftmost_fromskew; + uint32 leftmost_tw; ++ tmsize_t bufsize; + +- buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif)); +- if (buf == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); +- return (0); ++ bufsize = TIFFTileSize(tif); ++ if (bufsize == 0) { ++ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); ++ return (0); + } +- _TIFFmemset(buf, 0, TIFFTileSize(tif)); ++ + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + +@@ -691,8 +692,9 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + col = img->col_offset; + while (tocol < w) + { +- if (TIFFReadTile(tif, buf, col, +- row+img->row_offset, 0, 0)==(tmsize_t)(-1) && img->stoponerr) ++ if (_TIFFReadTileAndAllocBuffer(tif, (void**) &buf, bufsize, col, ++ row+img->row_offset, 0, 0)==(tmsize_t)(-1) && ++ (buf == NULL || img->stoponerr)) + { + ret = 0; + break; +@@ -772,11 +774,11 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + uint32 col, row, y, rowstoread; + tmsize_t pos; + uint32 tw, th; +- unsigned char* buf; +- unsigned char* p0; +- unsigned char* p1; +- unsigned char* p2; +- unsigned char* pa; ++ unsigned char* buf = NULL; ++ unsigned char* p0 = NULL; ++ unsigned char* p1 = NULL; ++ unsigned char* p2 = NULL; ++ unsigned char* pa = NULL; + tmsize_t tilesize; + tmsize_t bufsize; + int32 fromskew, toskew; +@@ -795,16 +797,7 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate"); + return (0); + } +- buf = (unsigned char*) _TIFFmalloc(bufsize); +- if (buf == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); +- return (0); +- } +- _TIFFmemset(buf, 0, bufsize); +- p0 = buf; +- p1 = p0 + tilesize; +- p2 = p1 + tilesize; +- pa = (alpha?(p2+tilesize):NULL); ++ + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + +@@ -824,7 +817,6 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_PALETTE: + colorchannels = 1; +- p2 = p1 = p0; + break; + + default: +@@ -849,7 +841,30 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + col = img->col_offset; + while (tocol < w) + { +- if (TIFFReadTile(tif, p0, col, ++ if( buf == NULL ) ++ { ++ if (_TIFFReadTileAndAllocBuffer( ++ tif, (void**) &buf, bufsize, col, ++ row+img->row_offset,0,0)==(tmsize_t)(-1) ++ && (buf == NULL || img->stoponerr)) ++ { ++ ret = 0; ++ break; ++ } ++ p0 = buf; ++ if( colorchannels == 1 ) ++ { ++ p2 = p1 = p0; ++ pa = (alpha?(p0+3*tilesize):NULL); ++ } ++ else ++ { ++ p1 = p0 + tilesize; ++ p2 = p1 + tilesize; ++ pa = (alpha?(p2+tilesize):NULL); ++ } ++ } ++ else if (TIFFReadTile(tif, p0, col, + row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr) + { + ret = 0; +@@ -940,13 +955,14 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + tileContigRoutine put = img->put.contig; + uint32 row, y, nrow, nrowsub, rowstoread; + tmsize_t pos; +- unsigned char* buf; ++ unsigned char* buf = NULL; + uint32 rowsperstrip; + uint16 subsamplinghor,subsamplingver; + uint32 imagewidth = img->width; + tmsize_t scanline; + int32 fromskew, toskew; + int ret = 1, flip; ++ tmsize_t maxstripsize; + + TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver); + if( subsamplingver == 0 ) { +@@ -954,12 +970,7 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + return (0); + } + +- buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif)); +- if (buf == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); +- return (0); +- } +- _TIFFmemset(buf, 0, TIFFStripSize(tif)); ++ maxstripsize = TIFFStripSize(tif); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { +@@ -981,11 +992,12 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + nrowsub = nrow; + if ((nrowsub%subsamplingver)!=0) + nrowsub+=subsamplingver-nrowsub%subsamplingver; +- if (TIFFReadEncodedStrip(tif, ++ if (_TIFFReadEncodedStripAndAllocBuffer(tif, + TIFFComputeStrip(tif,row+img->row_offset, 0), +- buf, ++ (void**)(&buf), ++ maxstripsize, + ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1) +- && img->stoponerr) ++ && (buf == NULL || img->stoponerr)) + { + ret = 0; + break; +@@ -1029,8 +1041,8 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + { + TIFF* tif = img->tif; + tileSeparateRoutine put = img->put.separate; +- unsigned char *buf; +- unsigned char *p0, *p1, *p2, *pa; ++ unsigned char *buf = NULL; ++ unsigned char *p0 = NULL, *p1 = NULL, *p2 = NULL, *pa = NULL; + uint32 row, y, nrow, rowstoread; + tmsize_t pos; + tmsize_t scanline; +@@ -1049,15 +1061,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate"); + return (0); + } +- p0 = buf = (unsigned char *)_TIFFmalloc(bufsize); +- if (buf == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); +- return (0); +- } +- _TIFFmemset(buf, 0, bufsize); +- p1 = p0 + stripsize; +- p2 = p1 + stripsize; +- pa = (alpha?(p2+stripsize):NULL); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { +@@ -1075,7 +1078,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_PALETTE: + colorchannels = 1; +- p2 = p1 = p0; + break; + + default: +@@ -1091,7 +1093,31 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip; + nrow = (row + rowstoread > h ? h - row : rowstoread); + offset_row = row + img->row_offset; +- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), ++ if( buf == NULL ) ++ { ++ if (_TIFFReadEncodedStripAndAllocBuffer( ++ tif, TIFFComputeStrip(tif, offset_row, 0), ++ (void**) &buf, bufsize, ++ ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) ++ && (buf == NULL || img->stoponerr)) ++ { ++ ret = 0; ++ break; ++ } ++ p0 = buf; ++ if( colorchannels == 1 ) ++ { ++ p2 = p1 = p0; ++ pa = (alpha?(p0+3*stripsize):NULL); ++ } ++ else ++ { ++ p1 = p0 + stripsize; ++ p2 = p1 + stripsize; ++ pa = (alpha?(p2+stripsize):NULL); ++ } ++ } ++ else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), + p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) + && img->stoponerr) + { +diff --git a/third_party/libtiff/tif_read.c b/third_party/libtiff/tif_read.c +index c916ac8ac..12c331b12 100644 +--- a/third_party/libtiff/tif_read.c ++++ b/third_party/libtiff/tif_read.c +@@ -315,18 +315,16 @@ TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample) + } + + /* +- * Read a strip of data and decompress the specified +- * amount into the user-supplied buffer. +- */ +-tmsize_t +-TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) ++ * Calculate the strip size according to the number of ++ * rows in the strip (check for truncated last strip on any ++ * of the separations). */ ++static tmsize_t TIFFReadEncodedStripGetStripSize(TIFF* tif, uint32 strip, uint16* pplane) + { + static const char module[] = "TIFFReadEncodedStrip"; + TIFFDirectory *td = &tif->tif_dir; + uint32 rowsperstrip; + uint32 stripsperplane; + uint32 stripinplane; +- uint16 plane; + uint32 rows; + tmsize_t stripsize; + if (!TIFFCheckRead(tif,0)) +@@ -338,23 +336,37 @@ TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) + (unsigned long)td->td_nstrips); + return((tmsize_t)(-1)); + } +- /* +- * Calculate the strip size according to the number of +- * rows in the strip (check for truncated last strip on any +- * of the separations). +- */ ++ + rowsperstrip=td->td_rowsperstrip; + if (rowsperstrip>td->td_imagelength) + rowsperstrip=td->td_imagelength; + stripsperplane= TIFFhowmany_32_maxuint_compat(td->td_imagelength, rowsperstrip); + stripinplane=(strip%stripsperplane); +- plane=(uint16)(strip/stripsperplane); ++ if( pplane ) *pplane=(uint16)(strip/stripsperplane); + rows=td->td_imagelength-stripinplane*rowsperstrip; + if (rows>rowsperstrip) + rows=rowsperstrip; + stripsize=TIFFVStripSize(tif,rows); + if (stripsize==0) + return((tmsize_t)(-1)); ++ return stripsize; ++ } ++ ++/* ++ * Read a strip of data and decompress the specified ++ * amount into the user-supplied buffer. ++ */ ++tmsize_t ++TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) ++{ ++ static const char module[] = "TIFFReadEncodedStrip"; ++ TIFFDirectory *td = &tif->tif_dir; ++ tmsize_t stripsize; ++ uint16 plane; ++ ++ stripsize=TIFFReadEncodedStripGetStripSize(tif, strip, &plane); ++ if (stripsize==((tmsize_t)(-1))) ++ return((tmsize_t)(-1)); + + /* shortcut to avoid an extra memcpy() */ + if( td->td_compression == COMPRESSION_NONE && +@@ -383,6 +395,49 @@ TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) + return(stripsize); + } + ++/* Variant of TIFFReadEncodedStrip() that does ++ * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillStrip() has ++ * suceeded. This avoid excessive memory allocation in case of truncated ++ * file. ++ * * calls regular TIFFReadEncodedStrip() if *buf != NULL ++ */ ++tmsize_t ++_TIFFReadEncodedStripAndAllocBuffer(TIFF* tif, uint32 strip, ++ void **buf, tmsize_t bufsizetoalloc, ++ tmsize_t size_to_read) ++{ ++ tmsize_t this_stripsize; ++ uint16 plane; ++ ++ if( *buf != NULL ) ++ { ++ return TIFFReadEncodedStrip(tif, strip, *buf, size_to_read); ++ } ++ ++ this_stripsize=TIFFReadEncodedStripGetStripSize(tif, strip, &plane); ++ if (this_stripsize==((tmsize_t)(-1))) ++ return((tmsize_t)(-1)); ++ ++ if ((size_to_read!=(tmsize_t)(-1))&&(size_to_read<this_stripsize)) ++ this_stripsize=size_to_read; ++ if (!TIFFFillStrip(tif,strip)) ++ return((tmsize_t)(-1)); ++ ++ *buf = _TIFFmalloc(bufsizetoalloc); ++ if (*buf == NULL) { ++ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); ++ return((tmsize_t)(-1)); ++ } ++ _TIFFmemset(*buf, 0, bufsizetoalloc); ++ ++ if ((*tif->tif_decodestrip)(tif,*buf,this_stripsize,plane)<=0) ++ return((tmsize_t)(-1)); ++ (*tif->tif_postdecode)(tif,*buf,this_stripsize); ++ return(this_stripsize); ++ ++ ++} ++ + static tmsize_t + TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size, + const char* module) +@@ -730,6 +785,78 @@ TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size) + return ((tmsize_t)(-1)); + } + ++ ++/* Variant of TIFFReadTile() that does ++ * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillTile() has ++ * suceeded. This avoid excessive memory allocation in case of truncated ++ * file. ++ * * calls regular TIFFReadEncodedTile() if *buf != NULL ++ */ ++tmsize_t ++_TIFFReadTileAndAllocBuffer(TIFF* tif, ++ void **buf, tmsize_t bufsizetoalloc, ++ uint32 x, uint32 y, uint32 z, uint16 s) ++{ ++ if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s)) ++ return ((tmsize_t)(-1)); ++ return (_TIFFReadEncodedTileAndAllocBuffer(tif, ++ TIFFComputeTile(tif, x, y, z, s), ++ buf, bufsizetoalloc, ++ (tmsize_t)(-1))); ++} ++ ++/* Variant of TIFFReadEncodedTile() that does ++ * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillTile() has ++ * suceeded. This avoid excessive memory allocation in case of truncated ++ * file. ++ * * calls regular TIFFReadEncodedTile() if *buf != NULL ++ */ ++tmsize_t ++_TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile, ++ void **buf, tmsize_t bufsizetoalloc, ++ tmsize_t size_to_read) ++{ ++ static const char module[] = "_TIFFReadEncodedTileAndAllocBuffer"; ++ TIFFDirectory *td = &tif->tif_dir; ++ tmsize_t tilesize = tif->tif_tilesize; ++ ++ if( *buf != NULL ) ++ { ++ return TIFFReadEncodedTile(tif, tile, *buf, size_to_read); ++ } ++ ++ if (!TIFFCheckRead(tif, 1)) ++ return ((tmsize_t)(-1)); ++ if (tile >= td->td_nstrips) { ++ TIFFErrorExt(tif->tif_clientdata, module, ++ "%lu: Tile out of range, max %lu", ++ (unsigned long) tile, (unsigned long) td->td_nstrips); ++ return ((tmsize_t)(-1)); ++ } ++ ++ if (!TIFFFillTile(tif,tile)) ++ return((tmsize_t)(-1)); ++ ++ *buf = _TIFFmalloc(bufsizetoalloc); ++ if (*buf == NULL) { ++ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), ++ "No space for tile buffer"); ++ return((tmsize_t)(-1)); ++ } ++ _TIFFmemset(*buf, 0, bufsizetoalloc); ++ ++ if (size_to_read == (tmsize_t)(-1)) ++ size_to_read = tilesize; ++ else if (size_to_read > tilesize) ++ size_to_read = tilesize; ++ if( (*tif->tif_decodetile)(tif, ++ (uint8*) *buf, size_to_read, (uint16)(tile/td->td_stripsperimage))) { ++ (*tif->tif_postdecode)(tif, (uint8*) *buf, size_to_read); ++ return (size_to_read); ++ } else ++ return ((tmsize_t)(-1)); ++} ++ + static tmsize_t + TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module) + { +diff --git a/third_party/libtiff/tiffiop.h b/third_party/libtiff/tiffiop.h +index 1925a6b5e..c42ebef43 100644 +--- a/third_party/libtiff/tiffiop.h ++++ b/third_party/libtiff/tiffiop.h +@@ -364,6 +364,20 @@ extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*); + extern double _TIFFUInt64ToDouble(uint64); + extern float _TIFFUInt64ToFloat(uint64); + ++extern tmsize_t ++_TIFFReadEncodedStripAndAllocBuffer(TIFF* tif, uint32 strip, ++ void **buf, tmsize_t bufsizetoalloc, ++ tmsize_t size_to_read); ++ ++extern tmsize_t ++_TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile, ++ void **buf, tmsize_t bufsizetoalloc, ++ tmsize_t size_to_read); ++extern tmsize_t ++_TIFFReadTileAndAllocBuffer(TIFF* tif, ++ void **buf, tmsize_t bufsizetoalloc, ++ uint32 x, uint32 y, uint32 z, uint16 s); ++ + extern int TIFFInitDumpMode(TIFF*, int); + #ifdef PACKBITS_SUPPORT + extern int TIFFInitPackBits(TIFF*, int); diff --git a/third_party/libtiff/README.pdfium b/third_party/libtiff/README.pdfium index 9888621076..e6602f8216 100644 --- a/third_party/libtiff/README.pdfium +++ b/third_party/libtiff/README.pdfium @@ -29,3 +29,4 @@ Local Modifications: 0022-upstream-patch-0012.patch: Use the upstream solution corresponding to patch 0012. 0023-upstream-security-fixes.patch: more upstream patches related to security issues. 0024-upstream-PackBitsDecode-fix.patch: fix Heap-buffer-overflow in tif_packbits.c. +0025-upstream-OOM-gtTileContig: allocates the decoded buffer only after a first successful TIFFFillStrip.
\ No newline at end of file diff --git a/third_party/libtiff/tif_getimage.c b/third_party/libtiff/tif_getimage.c index 84cc1d1a76..d1f1f45ac6 100644 --- a/third_party/libtiff/tif_getimage.c +++ b/third_party/libtiff/tif_getimage.c @@ -627,7 +627,7 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) uint32 col, row, y, rowstoread; tmsize_t pos; uint32 tw, th; - unsigned char* buf; + unsigned char* buf = NULL; int32 fromskew, toskew; int64 safeskew; uint32 nrow; @@ -636,13 +636,14 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) int32 this_toskew, leftmost_toskew; int32 leftmost_fromskew; uint32 leftmost_tw; + tmsize_t bufsize; - buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif)); - if (buf == 0) { - TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); - return (0); + bufsize = TIFFTileSize(tif); + if (bufsize == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); + return (0); } - _TIFFmemset(buf, 0, TIFFTileSize(tif)); + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); @@ -691,8 +692,9 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) col = img->col_offset; while (tocol < w) { - if (TIFFReadTile(tif, buf, col, - row+img->row_offset, 0, 0)==(tmsize_t)(-1) && img->stoponerr) + if (_TIFFReadTileAndAllocBuffer(tif, (void**) &buf, bufsize, col, + row+img->row_offset, 0, 0)==(tmsize_t)(-1) && + (buf == NULL || img->stoponerr)) { ret = 0; break; @@ -772,11 +774,11 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) uint32 col, row, y, rowstoread; tmsize_t pos; uint32 tw, th; - unsigned char* buf; - unsigned char* p0; - unsigned char* p1; - unsigned char* p2; - unsigned char* pa; + unsigned char* buf = NULL; + unsigned char* p0 = NULL; + unsigned char* p1 = NULL; + unsigned char* p2 = NULL; + unsigned char* pa = NULL; tmsize_t tilesize; tmsize_t bufsize; int32 fromskew, toskew; @@ -795,16 +797,7 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate"); return (0); } - buf = (unsigned char*) _TIFFmalloc(bufsize); - if (buf == 0) { - TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); - return (0); - } - _TIFFmemset(buf, 0, bufsize); - p0 = buf; - p1 = p0 + tilesize; - p2 = p1 + tilesize; - pa = (alpha?(p2+tilesize):NULL); + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); @@ -824,7 +817,6 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) case PHOTOMETRIC_MINISBLACK: case PHOTOMETRIC_PALETTE: colorchannels = 1; - p2 = p1 = p0; break; default: @@ -849,7 +841,30 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) col = img->col_offset; while (tocol < w) { - if (TIFFReadTile(tif, p0, col, + if( buf == NULL ) + { + if (_TIFFReadTileAndAllocBuffer( + tif, (void**) &buf, bufsize, col, + row+img->row_offset,0,0)==(tmsize_t)(-1) + && (buf == NULL || img->stoponerr)) + { + ret = 0; + break; + } + p0 = buf; + if( colorchannels == 1 ) + { + p2 = p1 = p0; + pa = (alpha?(p0+3*tilesize):NULL); + } + else + { + p1 = p0 + tilesize; + p2 = p1 + tilesize; + pa = (alpha?(p2+tilesize):NULL); + } + } + else if (TIFFReadTile(tif, p0, col, row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr) { ret = 0; @@ -940,13 +955,14 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) tileContigRoutine put = img->put.contig; uint32 row, y, nrow, nrowsub, rowstoread; tmsize_t pos; - unsigned char* buf; + unsigned char* buf = NULL; uint32 rowsperstrip; uint16 subsamplinghor,subsamplingver; uint32 imagewidth = img->width; tmsize_t scanline; int32 fromskew, toskew; int ret = 1, flip; + tmsize_t maxstripsize; TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver); if( subsamplingver == 0 ) { @@ -954,12 +970,7 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) return (0); } - buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif)); - if (buf == 0) { - TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); - return (0); - } - _TIFFmemset(buf, 0, TIFFStripSize(tif)); + maxstripsize = TIFFStripSize(tif); flip = setorientation(img); if (flip & FLIP_VERTICALLY) { @@ -981,11 +992,12 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) nrowsub = nrow; if ((nrowsub%subsamplingver)!=0) nrowsub+=subsamplingver-nrowsub%subsamplingver; - if (TIFFReadEncodedStrip(tif, + if (_TIFFReadEncodedStripAndAllocBuffer(tif, TIFFComputeStrip(tif,row+img->row_offset, 0), - buf, + (void**)(&buf), + maxstripsize, ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1) - && img->stoponerr) + && (buf == NULL || img->stoponerr)) { ret = 0; break; @@ -1029,8 +1041,8 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) { TIFF* tif = img->tif; tileSeparateRoutine put = img->put.separate; - unsigned char *buf; - unsigned char *p0, *p1, *p2, *pa; + unsigned char *buf = NULL; + unsigned char *p0 = NULL, *p1 = NULL, *p2 = NULL, *pa = NULL; uint32 row, y, nrow, rowstoread; tmsize_t pos; tmsize_t scanline; @@ -1049,15 +1061,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate"); return (0); } - p0 = buf = (unsigned char *)_TIFFmalloc(bufsize); - if (buf == 0) { - TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); - return (0); - } - _TIFFmemset(buf, 0, bufsize); - p1 = p0 + stripsize; - p2 = p1 + stripsize; - pa = (alpha?(p2+stripsize):NULL); flip = setorientation(img); if (flip & FLIP_VERTICALLY) { @@ -1075,7 +1078,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) case PHOTOMETRIC_MINISBLACK: case PHOTOMETRIC_PALETTE: colorchannels = 1; - p2 = p1 = p0; break; default: @@ -1091,7 +1093,31 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip; nrow = (row + rowstoread > h ? h - row : rowstoread); offset_row = row + img->row_offset; - if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), + if( buf == NULL ) + { + if (_TIFFReadEncodedStripAndAllocBuffer( + tif, TIFFComputeStrip(tif, offset_row, 0), + (void**) &buf, bufsize, + ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) + && (buf == NULL || img->stoponerr)) + { + ret = 0; + break; + } + p0 = buf; + if( colorchannels == 1 ) + { + p2 = p1 = p0; + pa = (alpha?(p0+3*stripsize):NULL); + } + else + { + p1 = p0 + stripsize; + p2 = p1 + stripsize; + pa = (alpha?(p2+stripsize):NULL); + } + } + else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) && img->stoponerr) { diff --git a/third_party/libtiff/tif_read.c b/third_party/libtiff/tif_read.c index c916ac8acb..12c331b127 100644 --- a/third_party/libtiff/tif_read.c +++ b/third_party/libtiff/tif_read.c @@ -315,18 +315,16 @@ TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample) } /* - * Read a strip of data and decompress the specified - * amount into the user-supplied buffer. - */ -tmsize_t -TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) + * Calculate the strip size according to the number of + * rows in the strip (check for truncated last strip on any + * of the separations). */ +static tmsize_t TIFFReadEncodedStripGetStripSize(TIFF* tif, uint32 strip, uint16* pplane) { static const char module[] = "TIFFReadEncodedStrip"; TIFFDirectory *td = &tif->tif_dir; uint32 rowsperstrip; uint32 stripsperplane; uint32 stripinplane; - uint16 plane; uint32 rows; tmsize_t stripsize; if (!TIFFCheckRead(tif,0)) @@ -338,23 +336,37 @@ TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) (unsigned long)td->td_nstrips); return((tmsize_t)(-1)); } - /* - * Calculate the strip size according to the number of - * rows in the strip (check for truncated last strip on any - * of the separations). - */ + rowsperstrip=td->td_rowsperstrip; if (rowsperstrip>td->td_imagelength) rowsperstrip=td->td_imagelength; stripsperplane= TIFFhowmany_32_maxuint_compat(td->td_imagelength, rowsperstrip); stripinplane=(strip%stripsperplane); - plane=(uint16)(strip/stripsperplane); + if( pplane ) *pplane=(uint16)(strip/stripsperplane); rows=td->td_imagelength-stripinplane*rowsperstrip; if (rows>rowsperstrip) rows=rowsperstrip; stripsize=TIFFVStripSize(tif,rows); if (stripsize==0) return((tmsize_t)(-1)); + return stripsize; + } + +/* + * Read a strip of data and decompress the specified + * amount into the user-supplied buffer. + */ +tmsize_t +TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) +{ + static const char module[] = "TIFFReadEncodedStrip"; + TIFFDirectory *td = &tif->tif_dir; + tmsize_t stripsize; + uint16 plane; + + stripsize=TIFFReadEncodedStripGetStripSize(tif, strip, &plane); + if (stripsize==((tmsize_t)(-1))) + return((tmsize_t)(-1)); /* shortcut to avoid an extra memcpy() */ if( td->td_compression == COMPRESSION_NONE && @@ -383,6 +395,49 @@ TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) return(stripsize); } +/* Variant of TIFFReadEncodedStrip() that does + * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillStrip() has + * suceeded. This avoid excessive memory allocation in case of truncated + * file. + * * calls regular TIFFReadEncodedStrip() if *buf != NULL + */ +tmsize_t +_TIFFReadEncodedStripAndAllocBuffer(TIFF* tif, uint32 strip, + void **buf, tmsize_t bufsizetoalloc, + tmsize_t size_to_read) +{ + tmsize_t this_stripsize; + uint16 plane; + + if( *buf != NULL ) + { + return TIFFReadEncodedStrip(tif, strip, *buf, size_to_read); + } + + this_stripsize=TIFFReadEncodedStripGetStripSize(tif, strip, &plane); + if (this_stripsize==((tmsize_t)(-1))) + return((tmsize_t)(-1)); + + if ((size_to_read!=(tmsize_t)(-1))&&(size_to_read<this_stripsize)) + this_stripsize=size_to_read; + if (!TIFFFillStrip(tif,strip)) + return((tmsize_t)(-1)); + + *buf = _TIFFmalloc(bufsizetoalloc); + if (*buf == NULL) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); + return((tmsize_t)(-1)); + } + _TIFFmemset(*buf, 0, bufsizetoalloc); + + if ((*tif->tif_decodestrip)(tif,*buf,this_stripsize,plane)<=0) + return((tmsize_t)(-1)); + (*tif->tif_postdecode)(tif,*buf,this_stripsize); + return(this_stripsize); + + +} + static tmsize_t TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size, const char* module) @@ -730,6 +785,78 @@ TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size) return ((tmsize_t)(-1)); } + +/* Variant of TIFFReadTile() that does + * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillTile() has + * suceeded. This avoid excessive memory allocation in case of truncated + * file. + * * calls regular TIFFReadEncodedTile() if *buf != NULL + */ +tmsize_t +_TIFFReadTileAndAllocBuffer(TIFF* tif, + void **buf, tmsize_t bufsizetoalloc, + uint32 x, uint32 y, uint32 z, uint16 s) +{ + if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s)) + return ((tmsize_t)(-1)); + return (_TIFFReadEncodedTileAndAllocBuffer(tif, + TIFFComputeTile(tif, x, y, z, s), + buf, bufsizetoalloc, + (tmsize_t)(-1))); +} + +/* Variant of TIFFReadEncodedTile() that does + * * if *buf == NULL, *buf = _TIFFmalloc(bufsizetoalloc) only after TIFFFillTile() has + * suceeded. This avoid excessive memory allocation in case of truncated + * file. + * * calls regular TIFFReadEncodedTile() if *buf != NULL + */ +tmsize_t +_TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile, + void **buf, tmsize_t bufsizetoalloc, + tmsize_t size_to_read) +{ + static const char module[] = "_TIFFReadEncodedTileAndAllocBuffer"; + TIFFDirectory *td = &tif->tif_dir; + tmsize_t tilesize = tif->tif_tilesize; + + if( *buf != NULL ) + { + return TIFFReadEncodedTile(tif, tile, *buf, size_to_read); + } + + if (!TIFFCheckRead(tif, 1)) + return ((tmsize_t)(-1)); + if (tile >= td->td_nstrips) { + TIFFErrorExt(tif->tif_clientdata, module, + "%lu: Tile out of range, max %lu", + (unsigned long) tile, (unsigned long) td->td_nstrips); + return ((tmsize_t)(-1)); + } + + if (!TIFFFillTile(tif,tile)) + return((tmsize_t)(-1)); + + *buf = _TIFFmalloc(bufsizetoalloc); + if (*buf == NULL) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), + "No space for tile buffer"); + return((tmsize_t)(-1)); + } + _TIFFmemset(*buf, 0, bufsizetoalloc); + + if (size_to_read == (tmsize_t)(-1)) + size_to_read = tilesize; + else if (size_to_read > tilesize) + size_to_read = tilesize; + if( (*tif->tif_decodetile)(tif, + (uint8*) *buf, size_to_read, (uint16)(tile/td->td_stripsperimage))) { + (*tif->tif_postdecode)(tif, (uint8*) *buf, size_to_read); + return (size_to_read); + } else + return ((tmsize_t)(-1)); +} + static tmsize_t TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module) { diff --git a/third_party/libtiff/tiffiop.h b/third_party/libtiff/tiffiop.h index 1925a6b5e4..c42ebef436 100644 --- a/third_party/libtiff/tiffiop.h +++ b/third_party/libtiff/tiffiop.h @@ -364,6 +364,20 @@ extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*); extern double _TIFFUInt64ToDouble(uint64); extern float _TIFFUInt64ToFloat(uint64); +extern tmsize_t +_TIFFReadEncodedStripAndAllocBuffer(TIFF* tif, uint32 strip, + void **buf, tmsize_t bufsizetoalloc, + tmsize_t size_to_read); + +extern tmsize_t +_TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile, + void **buf, tmsize_t bufsizetoalloc, + tmsize_t size_to_read); +extern tmsize_t +_TIFFReadTileAndAllocBuffer(TIFF* tif, + void **buf, tmsize_t bufsizetoalloc, + uint32 x, uint32 y, uint32 z, uint16 s); + extern int TIFFInitDumpMode(TIFF*, int); #ifdef PACKBITS_SUPPORT extern int TIFFInitPackBits(TIFF*, int); |