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openSUSE:Step:15-SP2
ImageMagick.10856
ImageMagick-xwd.c-update.patch
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File ImageMagick-xwd.c-update.patch of Package ImageMagick.10856
--- ImageMagick-7.0.7-34/coders/xwd.c 2018-05-20 17:55:43.000000000 +0200 +++ ImageMagick-7.0.8-40/coders/xwd.c 2019-04-13 02:36:08.000000000 +0200 @@ -17,13 +17,13 @@ % July 1992 % % % % % -% Copyright 1999-2018 ImageMagick Studio LLC, a non-profit organization % +% Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization % % dedicated to making software imaging solutions freely available. % % % % You may not use this file except in compliance with the License. You may % % obtain a copy of the License at % % % -% https://www.imagemagick.org/script/license.php % +% https://imagemagick.org/script/license.php % % % % Unless required by applicable law or agreed to in writing, software % % distributed under the License is distributed on an "AS IS" BASIS, % @@ -40,6 +40,7 @@ Include declarations. */ #include "MagickCore/studio.h" +#include "MagickCore/attribute.h" #include "MagickCore/blob.h" #include "MagickCore/blob-private.h" #include "MagickCore/cache.h" @@ -236,8 +237,17 @@ static Image *ReadXWDImage(const ImageIn if (header.file_version != XWD_FILE_VERSION) ThrowReaderException(CorruptImageError,"FileFormatVersionMismatch"); if (header.header_size < sz_XWDheader) - ThrowReaderException(CorruptImageError,"CorruptImage"); - switch (header.visual_class) { + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + if ((header.bits_per_pixel == 0) || (header.bits_per_pixel > 32)) + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + if (((header.bitmap_pad % 8) != 0) || (header.bitmap_pad > 32)) + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + if (header.bitmap_unit > 32) + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + if (header.ncolors > 256) + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + switch (header.visual_class) + { case StaticGray: case GrayScale: case StaticColor: @@ -246,17 +256,18 @@ static Image *ReadXWDImage(const ImageIn case DirectColor: break; default: - ThrowReaderException(CorruptImageError,"CorruptImage"); - } - switch (header.pixmap_format) { + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); + } + switch (header.pixmap_format) + { case XYBitmap: case XYPixmap: case ZPixmap: break; default: - ThrowReaderException(CorruptImageError,"CorruptImage"); + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); } - length=(size_t) header.header_size-sz_XWDheader; + length=(size_t) (header.header_size-sz_XWDheader); comment=(char *) AcquireQuantumMemory(length+1,sizeof(*comment)); if (comment == (char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); @@ -287,9 +298,9 @@ static Image *ReadXWDImage(const ImageIn ximage->red_mask=header.red_mask; ximage->green_mask=header.green_mask; ximage->blue_mask=header.blue_mask; - if ((ximage->width < 0) || (ximage->height < 0) || (ximage->depth < 0) || - (ximage->format < 0) || (ximage->byte_order < 0) || - (ximage->bitmap_bit_order < 0) || (ximage->bitmap_pad < 0) || + if ((ximage->width < 0) || (ximage->height < 0) || (ximage->depth < 0) || + (ximage->format < 0) || (ximage->byte_order < 0) || + (ximage->bitmap_bit_order < 0) || (ximage->bitmap_pad < 0) || (ximage->bytes_per_line < 0)) { ximage=(XImage *) RelinquishMagickMemory(ximage); @@ -477,18 +488,18 @@ static Image *ReadXWDImage(const ImageIn for (x=0; x < (ssize_t) image->columns; x++) { pixel=XGetPixel(ximage,(int) x,(int) y); - index=(Quantum) ((pixel >> red_shift) & red_mask); - if (index < header.ncolors) - SetPixelRed(image,ScaleShortToQuantum( - colors[(ssize_t) index].red),q); - index=(Quantum) ((pixel >> green_shift) & green_mask); - if (index < header.ncolors) - SetPixelGreen(image,ScaleShortToQuantum( - colors[(ssize_t) index].green),q); - index=(Quantum) ((pixel >> blue_shift) & blue_mask); - if (index < header.ncolors) - SetPixelBlue(image,ScaleShortToQuantum( - colors[(ssize_t) index].blue),q); + index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >> + red_shift) & red_mask,exception); + SetPixelRed(image,ScaleShortToQuantum( + colors[(ssize_t) index].red),q); + index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >> + green_shift) & green_mask,exception); + SetPixelGreen(image,ScaleShortToQuantum( + colors[(ssize_t) index].green),q); + index=(Quantum) ConstrainColormapIndex(image,(ssize_t) (pixel >> + blue_shift) & blue_mask,exception); + SetPixelBlue(image,ScaleShortToQuantum( + colors[(ssize_t) index].blue),q); q+=GetPixelChannels(image); } if (SyncAuthenticPixels(image,exception) == MagickFalse) @@ -560,8 +571,8 @@ static Image *ReadXWDImage(const ImageIn break; for (x=0; x < (ssize_t) image->columns; x++) { - index=ConstrainColormapIndex(image,XGetPixel(ximage,(int) x, - (int) y),exception); + index=(Quantum) ConstrainColormapIndex(image,(ssize_t) + XGetPixel(ximage,(int) x,(int) y),exception); SetPixelIndex(image,index,q); SetPixelViaPixelInfo(image,image->colormap+(ssize_t) index,q); q+=GetPixelChannels(image); @@ -708,6 +719,7 @@ static MagickBooleanType WriteXWDImage(c scanline_pad; ssize_t + count, y; unsigned char @@ -733,6 +745,11 @@ static MagickBooleanType WriteXWDImage(c status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); if (status == MagickFalse) return(status); + if ((image->columns != (CARD32) image->columns) || + (image->rows != (CARD32) image->rows)) + ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit"); + if ((image->storage_class == PseudoClass) && (image->colors > 256)) + (void) SetImageType(image,TrueColorType,exception); (void) TransformImageColorspace(image,sRGBColorspace,exception); /* Initialize XWD file header. @@ -820,8 +837,8 @@ static MagickBooleanType WriteXWDImage(c { MSBOrderLong((unsigned char *) &colors[i].pixel, sizeof(colors[i].pixel)); - MSBOrderShort((unsigned char *) &colors[i].red, - 3*sizeof(colors[i].red)); + MSBOrderShort((unsigned char *) &colors[i].red,3* + sizeof(colors[i].red)); } } for (i=0; i < (ssize_t) image->colors; i++) @@ -831,7 +848,9 @@ static MagickBooleanType WriteXWDImage(c color.green=colors[i].green; color.blue=colors[i].blue; color.flags=(CARD8) colors[i].flags; - (void) WriteBlob(image,sz_XWDColor,(unsigned char *) &color); + count=WriteBlob(image,sz_XWDColor,(unsigned char *) &color); + if (count != (ssize_t) sz_XWDColor) + break; } colors=(XColor *) RelinquishMagickMemory(colors); } @@ -873,7 +892,10 @@ static MagickBooleanType WriteXWDImage(c } for (x=0; x < (ssize_t) scanline_pad; x++) *q++='\0'; - (void) WriteBlob(image,(size_t) (q-pixels),pixels); + length=(size_t) (q-pixels); + count=WriteBlob(image,length,pixels); + if (count != (ssize_t) length) + break; status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) @@ -881,6 +903,6 @@ static MagickBooleanType WriteXWDImage(c } pixels=(unsigned char *) RelinquishMagickMemory(pixels); (void) CloseBlob(image); - return(MagickTrue); + return(y < (ssize_t) image->rows ? MagickFalse : MagickTrue); } #endif
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