diff options
Diffstat (limited to 'media-libs/tiff/files/tiff-4.0.7-bug2642-bug2643-bug2646-bug2647.patch')
-rw-r--r-- | media-libs/tiff/files/tiff-4.0.7-bug2642-bug2643-bug2646-bug2647.patch | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/media-libs/tiff/files/tiff-4.0.7-bug2642-bug2643-bug2646-bug2647.patch b/media-libs/tiff/files/tiff-4.0.7-bug2642-bug2643-bug2646-bug2647.patch new file mode 100644 index 000000000000..6f01774b9d53 --- /dev/null +++ b/media-libs/tiff/files/tiff-4.0.7-bug2642-bug2643-bug2646-bug2647.patch @@ -0,0 +1,278 @@ +From f049eba476a1ed60adc6534452ccf0022c2d1908 Mon Sep 17 00:00:00 2001 +From: Even Rouault <even.rouault@spatialys.com> +Date: Wed, 11 Jan 2017 16:09:02 +0000 +Subject: [PATCH] * libtiff/tif_dir.c, tif_dirread.c, tif_dirwrite.c: implement + various clampings of double to other data types to avoid undefined behaviour + if the output range isn't big enough to hold the input value. Fixes + http://bugzilla.maptools.org/show_bug.cgi?id=2643 + http://bugzilla.maptools.org/show_bug.cgi?id=2642 + http://bugzilla.maptools.org/show_bug.cgi?id=2646 + http://bugzilla.maptools.org/show_bug.cgi?id=2647 + +--- + ChangeLog | 10 ++++++ + libtiff/tif_dir.c | 20 ++++++++--- + libtiff/tif_dirread.c | 12 +++++-- + libtiff/tif_dirwrite.c | 92 ++++++++++++++++++++++++++++++++++++++++++++------ + 4 files changed, 116 insertions(+), 18 deletions(-) + +diff --git a/libtiff/tif_dir.c b/libtiff/tif_dir.c +index 2574e748b3be..36c7ae57641a 100644 +--- a/libtiff/tif_dir.c ++++ b/libtiff/tif_dir.c +@@ -31,6 +31,7 @@ + * (and also some miscellaneous stuff) + */ + #include "tiffiop.h" ++#include <float.h> + + /* + * These are used in the backwards compatibility code... +@@ -154,6 +155,15 @@ bad: + return (0); + } + ++static float TIFFClampDoubleToFloat( double val ) ++{ ++ if( val > FLT_MAX ) ++ return FLT_MAX; ++ if( val < -FLT_MAX ) ++ return -FLT_MAX; ++ return (float)val; ++} ++ + static int + _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap) + { +@@ -312,13 +322,13 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap) + dblval = va_arg(ap, double); + if( dblval < 0 ) + goto badvaluedouble; +- td->td_xresolution = (float) dblval; ++ td->td_xresolution = TIFFClampDoubleToFloat( dblval ); + break; + case TIFFTAG_YRESOLUTION: + dblval = va_arg(ap, double); + if( dblval < 0 ) + goto badvaluedouble; +- td->td_yresolution = (float) dblval; ++ td->td_yresolution = TIFFClampDoubleToFloat( dblval ); + break; + case TIFFTAG_PLANARCONFIG: + v = (uint16) va_arg(ap, uint16_vap); +@@ -327,10 +337,10 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap) + td->td_planarconfig = (uint16) v; + break; + case TIFFTAG_XPOSITION: +- td->td_xposition = (float) va_arg(ap, double); ++ td->td_xposition = TIFFClampDoubleToFloat( va_arg(ap, double) ); + break; + case TIFFTAG_YPOSITION: +- td->td_yposition = (float) va_arg(ap, double); ++ td->td_yposition = TIFFClampDoubleToFloat( va_arg(ap, double) ); + break; + case TIFFTAG_RESOLUTIONUNIT: + v = (uint16) va_arg(ap, uint16_vap); +diff --git a/libtiff/tif_dirread.c b/libtiff/tif_dirread.c +index eae3430612d0..f8628fd6d5d2 100644 +--- a/libtiff/tif_dirread.c ++++ b/libtiff/tif_dirread.c +@@ -40,6 +40,7 @@ + */ + + #include "tiffiop.h" ++#include <float.h> + + #define IGNORE 0 /* tag placeholder used below */ + #define FAILED_FII ((uint32) -1) +@@ -2406,7 +2407,14 @@ static enum TIFFReadDirEntryErr TIFFReadDirEntryFloatArray(TIFF* tif, TIFFDirEnt + ma=(double*)origdata; + mb=data; + for (n=0; n<count; n++) +- *mb++=(float)(*ma++); ++ { ++ double val = *ma++; ++ if( val > FLT_MAX ) ++ val = FLT_MAX; ++ else if( val < -FLT_MAX ) ++ val = -FLT_MAX; ++ *mb++=(float)val; ++ } + } + break; + } +diff --git a/libtiff/tif_dirwrite.c b/libtiff/tif_dirwrite.c +index 055324db078f..f7339685130d 100644 +--- a/libtiff/tif_dirwrite.c ++++ b/libtiff/tif_dirwrite.c +@@ -30,6 +30,7 @@ + * Directory Write Support Routines. + */ + #include "tiffiop.h" ++#include <float.h> + + #ifdef HAVE_IEEEFP + #define TIFFCvtNativeToIEEEFloat(tif, n, fp) +@@ -939,6 +940,69 @@ bad: + return(0); + } + ++static float TIFFClampDoubleToFloat( double val ) ++{ ++ if( val > FLT_MAX ) ++ return FLT_MAX; ++ if( val < -FLT_MAX ) ++ return -FLT_MAX; ++ return (float)val; ++} ++ ++static int8 TIFFClampDoubleToInt8( double val ) ++{ ++ if( val > 127 ) ++ return 127; ++ if( val < -128 || val != val ) ++ return -128; ++ return (int8)val; ++} ++ ++static int16 TIFFClampDoubleToInt16( double val ) ++{ ++ if( val > 32767 ) ++ return 32767; ++ if( val < -32768 || val != val ) ++ return -32768; ++ return (int16)val; ++} ++ ++static int32 TIFFClampDoubleToInt32( double val ) ++{ ++ if( val > 0x7FFFFFFF ) ++ return 0x7FFFFFFF; ++ if( val < -0x7FFFFFFF-1 || val != val ) ++ return -0x7FFFFFFF-1; ++ return (int32)val; ++} ++ ++static uint8 TIFFClampDoubleToUInt8( double val ) ++{ ++ if( val < 0 ) ++ return 0; ++ if( val > 255 || val != val ) ++ return 255; ++ return (uint8)val; ++} ++ ++static uint16 TIFFClampDoubleToUInt16( double val ) ++{ ++ if( val < 0 ) ++ return 0; ++ if( val > 65535 || val != val ) ++ return 65535; ++ return (uint16)val; ++} ++ ++static uint32 TIFFClampDoubleToUInt32( double val ) ++{ ++ if( val < 0 ) ++ return 0; ++ if( val > 0xFFFFFFFFU || val != val ) ++ return 0xFFFFFFFFU; ++ return (uint32)val; ++} ++ + static int + TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value) + { +@@ -959,7 +1023,7 @@ TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* di + if (tif->tif_dir.td_bitspersample<=32) + { + for (i = 0; i < count; ++i) +- ((float*)conv)[i] = (float)value[i]; ++ ((float*)conv)[i] = TIFFClampDoubleToFloat(value[i]); + ok = TIFFWriteDirectoryTagFloatArray(tif,ndir,dir,tag,count,(float*)conv); + } + else +@@ -971,19 +1035,19 @@ TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* di + if (tif->tif_dir.td_bitspersample<=8) + { + for (i = 0; i < count; ++i) +- ((int8*)conv)[i] = (int8)value[i]; ++ ((int8*)conv)[i] = TIFFClampDoubleToInt8(value[i]); + ok = TIFFWriteDirectoryTagSbyteArray(tif,ndir,dir,tag,count,(int8*)conv); + } + else if (tif->tif_dir.td_bitspersample<=16) + { + for (i = 0; i < count; ++i) +- ((int16*)conv)[i] = (int16)value[i]; ++ ((int16*)conv)[i] = TIFFClampDoubleToInt16(value[i]); + ok = TIFFWriteDirectoryTagSshortArray(tif,ndir,dir,tag,count,(int16*)conv); + } + else + { + for (i = 0; i < count; ++i) +- ((int32*)conv)[i] = (int32)value[i]; ++ ((int32*)conv)[i] = TIFFClampDoubleToInt32(value[i]); + ok = TIFFWriteDirectoryTagSlongArray(tif,ndir,dir,tag,count,(int32*)conv); + } + break; +@@ -991,19 +1055,19 @@ TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* di + if (tif->tif_dir.td_bitspersample<=8) + { + for (i = 0; i < count; ++i) +- ((uint8*)conv)[i] = (uint8)value[i]; ++ ((uint8*)conv)[i] = TIFFClampDoubleToUInt8(value[i]); + ok = TIFFWriteDirectoryTagByteArray(tif,ndir,dir,tag,count,(uint8*)conv); + } + else if (tif->tif_dir.td_bitspersample<=16) + { + for (i = 0; i < count; ++i) +- ((uint16*)conv)[i] = (uint16)value[i]; ++ ((uint16*)conv)[i] = TIFFClampDoubleToUInt16(value[i]); + ok = TIFFWriteDirectoryTagShortArray(tif,ndir,dir,tag,count,(uint16*)conv); + } + else + { + for (i = 0; i < count; ++i) +- ((uint32*)conv)[i] = (uint32)value[i]; ++ ((uint32*)conv)[i] = TIFFClampDoubleToUInt32(value[i]); + ok = TIFFWriteDirectoryTagLongArray(tif,ndir,dir,tag,count,(uint32*)conv); + } + break; +@@ -2102,12 +2166,17 @@ TIFFWriteDirectoryTagCheckedRational(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, + TIFFErrorExt(tif->tif_clientdata,module,"Negative value is illegal"); + return 0; + } ++ else if( value != value ) ++ { ++ TIFFErrorExt(tif->tif_clientdata,module,"Not-a-number value is illegal"); ++ return 0; ++ } + else if (value==0.0) + { + m[0]=0; + m[1]=1; + } +- else if (value==(double)(uint32)value) ++ else if (value <= 0xFFFFFFFFU && value==(double)(uint32)value) + { + m[0]=(uint32)value; + m[1]=1; +@@ -2148,12 +2217,13 @@ TIFFWriteDirectoryTagCheckedRationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* + } + for (na=value, nb=m, nc=0; nc<count; na++, nb+=2, nc++) + { +- if (*na<=0.0) ++ if (*na<=0.0 || *na != *na) + { + nb[0]=0; + nb[1]=1; + } +- else if (*na==(float)(uint32)(*na)) ++ else if (*na >= 0 && *na <= (float)0xFFFFFFFFU && ++ *na==(float)(uint32)(*na)) + { + nb[0]=(uint32)(*na); + nb[1]=1; +-- +2.12.0 + |