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dba-GraphicsMagick-1324
GraphicsMagick-debian-fixed.patch
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File GraphicsMagick-debian-fixed.patch of Package dba-GraphicsMagick-1324
Index: GraphicsMagick-1.3.18/magick/delegate.c =================================================================== --- GraphicsMagick-1.3.18.orig/magick/delegate.c +++ GraphicsMagick-1.3.18/magick/delegate.c @@ -539,7 +539,10 @@ MagickExport unsigned int InvokeDelegate char *command, **commands, - filename[MaxTextExtent]; + linkedname[MaxTextExtent], + linkedinfoname[MaxTextExtent], + filename[MaxTextExtent], + safechars[]="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.,-_+ /"; const DelegateInfo *delegate_info; @@ -559,6 +562,10 @@ MagickExport unsigned int InvokeDelegate assert(image != (Image *) NULL); assert(image->signature == MagickSignature); temporary_image_filename=(*image->filename == '\0'); + linkedname[0]='\0'; + linkedname[MaxTextExtent-1]='\0'; + linkedinfoname[0]='\0'; + linkedinfoname[MaxTextExtent-1]='\0'; if (temporary_image_filename) { /* Allocate a temporary filename if image is unnamed. */ @@ -568,12 +575,24 @@ MagickExport unsigned int InvokeDelegate return(False); } } + else if (strspn(image->filename, safechars) != strlen(image->filename)) + { + strncpy(linkedname,image->filename,MaxTextExtent-1); + if (!AcquireTemporarySymlink(image->filename,linkedname)) + { + (void) ThrowException(exception,FileOpenError,UnableToCreateTemporaryFile,image->filename); + return (False); + } + } + (void) strlcpy(filename,image->filename,MaxTextExtent); delegate_info=GetDelegateInfo(decode,encode,exception); if (delegate_info == (DelegateInfo *) NULL) { if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); (void) ThrowException(exception,DelegateError,NoTagFound, decode ? decode : encode); return(False); @@ -594,6 +613,18 @@ MagickExport unsigned int InvokeDelegate } image_info->temporary=True; } + else if (strspn(image_info->filename, safechars) != strlen(image_info->filename)) + { + strncpy(linkedinfoname,image_info->filename,MaxTextExtent-1); + if (!AcquireTemporarySymlink(image_info->filename,linkedinfoname)) + { + if (temporary_image_filename) + LiberateTemporaryFile(image->filename); + (void) ThrowException(exception,FileOpenError,UnableToCreateTemporaryFile,image_info->filename); + return(False); + } + temporary_image_filename=True; + } if (delegate_info->mode != 0) if ((decode && (delegate_info->encode != (char *) NULL)) || @@ -617,6 +648,13 @@ MagickExport unsigned int InvokeDelegate { if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } (void) ThrowException(exception,FileOpenError,UnableToCreateTemporaryFile,image_info->unique); return(False); } @@ -625,6 +663,13 @@ MagickExport unsigned int InvokeDelegate { if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } (void) LiberateTemporaryFile(image_info->unique); (void) ThrowException(exception,FileOpenError,UnableToCreateTemporaryFile,image_info->zero); return(False); @@ -638,6 +683,13 @@ MagickExport unsigned int InvokeDelegate (void) LiberateTemporaryFile(image_info->zero); if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } (void) ThrowException(exception,DelegateError,DelegateFailed, decode ? decode : encode); return(False); @@ -663,6 +715,13 @@ MagickExport unsigned int InvokeDelegate (void) LiberateTemporaryFile(image_info->zero); if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } DestroyImageInfo(clone_info); (void) ThrowException(exception,DelegateError,DelegateFailed, decode ? decode : encode); @@ -684,6 +743,13 @@ MagickExport unsigned int InvokeDelegate { if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } (void) ThrowException(exception,ResourceLimitError,MemoryAllocationFailed,decode ? decode : encode); return(False); } @@ -810,6 +876,13 @@ MagickExport unsigned int InvokeDelegate error_exit: if (temporary_image_filename) (void) LiberateTemporaryFile(image->filename); + if (*linkedname) + strncpy(image->filename,linkedname,MaxTextExtent-1); + if (*linkedinfoname) + { + LiberateTemporaryFile(linkedinfoname); + strncpy(image_info->filename,linkedinfoname,MaxTextExtent-1); + } for ( ; commands[i] != (char *) NULL; i++) MagickFreeMemory(commands[i]); MagickFreeMemory(commands); Index: GraphicsMagick-1.3.18/magick/symbols.h =================================================================== --- GraphicsMagick-1.3.18.orig/magick/symbols.h +++ GraphicsMagick-1.3.18/magick/symbols.h @@ -43,6 +43,7 @@ #define AcquireTemporaryFileDescriptor GmAcquireTemporaryFileDescriptor #define AcquireTemporaryFileName GmAcquireTemporaryFileName #define AcquireTemporaryFileStream GmAcquireTemporaryFileStream +#define AcquireTemporarySymlink GmAcquireTemporarySymlink #define AdaptiveThresholdImage GmAdaptiveThresholdImage #define AddDefinition GmAddDefinition #define AddDefinitions GmAddDefinitions Index: GraphicsMagick-1.3.18/magick/tempfile.c =================================================================== --- GraphicsMagick-1.3.18.orig/magick/tempfile.c +++ GraphicsMagick-1.3.18/magick/tempfile.c @@ -192,6 +192,93 @@ MagickExport MagickPassFail AcquireTempo % % % % % % ++ A c q u i r e T e m p o r a r y S y m l i n k % +% % +% % +% % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% AcquireTemporarySymlink replaces the contents of the string buffer pointed +% to by filename with the unique name of a symbolic link. True is returned +% if a symlink waas created, or False is returned if there is a failure. +% The allocated symlink should be recovered via the LiberateTemporaryFile() +% function once it is no longer required. +% +% The format of the AcquireTemporarySymlink method is: +% +% unsigned int AcquireTemporarySymlink(char *linkname, const char *name, +% ExceptionInfo *exception) +% +% A description of each parameter follows. +% +% o linkname: Specifies a pointer to an array of characters that must be +% MaxTextExtent characters of size. The unique +% name of the symlink is returned in this array. +% o name: Specifies a file name the symlink should point to. +*/ +MagickExport unsigned int AcquireTemporarySymlink(char *linkname, const char *name) +{ + char + *tempdir, + tempname[MaxTextExtent]; + + int + fd, + tries; + + assert(linkname != (char *)NULL); + linkname[0]='\0'; + tempname[MaxTextExtent-1]='\0'; + + tempdir=getenv("MAGICK_TMPDIR"); +#if defined(POSIX) + if (!tempdir) + tempdir=getenv("TMPDIR"); +#endif /* POSIX */ +#if defined(WIN32) + if (!tempdir) + tempdir=getenv("TMP"); + if (!tempdir) + tempdir=getenv("TEMP"); +#endif /* WIN32 */ +#if defined(P_tmpdir) + if (!tempdir) + tempdir=P_tmpdir; +#endif + + for (tries=0; tries < 15; tries++) + { + strncpy(tempname,"gmXXXXXX",MaxTextExtent-1); + ComposeTemporaryFileName(tempname); + strncpy(linkname,tempdir,MaxTextExtent-1); + if (tempdir[strlen(tempdir)-1] != DirectorySeparator[0]) + strncat(linkname,DirectorySeparator,MaxTextExtent-1); + strncat(linkname,tempname,MaxTextExtent-1); + if (*name == '/') + fd=symlink(name, linkname); + else + { + char cname[MaxTextExtent]; + if (!getcwd(cname,(size_t)MaxTextExtent)) + return (False); + strncat(cname,DirectorySeparator,MaxTextExtent-1); + strncat(cname,name,MaxTextExtent-1); + fd=symlink(cname,linkname); + } + if (fd != -1) + { + AddTemporaryFileToList(linkname); + return (True); + } + } + return (False); +} + +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % + A c q u i r e T e m p o r a r y F i l e D e s c r i p t o r % % % % % Index: GraphicsMagick-1.3.18/magick/tempfile.h =================================================================== --- GraphicsMagick-1.3.18.orig/magick/tempfile.h +++ GraphicsMagick-1.3.18/magick/tempfile.h @@ -24,6 +24,7 @@ typedef enum MagickExport MagickPassFail AcquireTemporaryFileName(char *filename), + AcquireTemporarySymlink(char *linkname, const char *name), LiberateTemporaryFile(char *filename); MagickExport int Index: GraphicsMagick-1.3.18/magick/utility.c =================================================================== --- GraphicsMagick-1.3.18.orig/magick/utility.c +++ GraphicsMagick-1.3.18/magick/utility.c @@ -1253,6 +1253,72 @@ MagickExport void FormatString(char *str % % % % % % +% F o r m a t S t r i n g N u m e r i c % +% % +% % +% % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Method FormatStringNumeric formats output for a single numeric argument. +% It takes into account that the format string given might be untrusted +% user input, and returns a pointer to the formatted string. +% +% The format of the FormatStringNumeric method is: +% +% char * FormatStringNumeric(char *string,const char *format,int value) +% +% A description of each parameter follows. +% +% o format: A string describing the format to use to write the numeric +% argument. Only the first numeric format identifier is replaced. +% +% o value: Numeric value to substitute into format string. +% +% +*/ +MagickExport char *FormatStringNumeric(const char *format,int value) +{ + char + *p, + *string; + + string = NULL; + + (void) CloneString(&string, format); + + for (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%')) + { + char + *q; + + q=(char *) p+1; + if (*q == '0') + (void) strtol(q,&q,10); + if ((*q == '%') || (*q == 'd') || (*q == 'o') || (*q == 'x')) + { + char + c; + + q++; + c=*q; + *q='\0'; + (void) snprintf(string+(p-format),MaxTextExtent-(p-format),p,value); + *q=c; + (void) ConcatenateString(&string,q); + if (*(q-1) == '%') + p++; + else + break; + } + } + return string; +} + +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % % G e t E x e c u t i o n P a t h % % % % % Index: GraphicsMagick-1.3.18/magick/utility.h =================================================================== --- GraphicsMagick-1.3.18.orig/magick/utility.h +++ GraphicsMagick-1.3.18/magick/utility.h @@ -72,6 +72,7 @@ extern MagickExport char *AllocateString(const char *), *Base64Encode(const unsigned char *,const size_t,size_t *), *EscapeString(const char *,const char), + *FormatStringNumeric(const char *,int), *GetPageGeometry(const char *), **ListFiles(const char *,const char *,long *), **StringToArgv(const char *,int *),
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