File ImageMagick-6.2.5-format-string-CVE-2006-0082.patch of Package ImageMagick
--- magick/animate.c
+++ magick/animate.c
@@ -609,7 +609,7 @@
/*
Form filename for multi-part images.
*/
- (void) FormatMagickString(filename,MaxTextExtent,
+ (void) FormatMagickStringNumeric(filename,MaxTextExtent,
image_info->filename,scene);
if (LocaleCompare(filename,image_info->filename) == 0)
(void) FormatMagickString(filename,MaxTextExtent,"%s[%lu]",
--- magick/blob.c
+++ magick/blob.c
@@ -2122,25 +2122,8 @@
/*
Form filename for multi-part images.
*/
- (void) CopyMagickString(filename,image->filename,MaxTextExtent);
- for (p=strchr(filename,'%'); p != (char *) NULL; p=strchr(p+1,'%'))
- {
- char
- *q;
-
- q=p+1;
- if (*q == '0')
- (void) strtol(q,&q,10);
- if ((*q == '%') || (*q == 'd') || (*q == 'o') || (*q == 'x'))
- {
- char
- format[MaxTextExtent];
-
- (void) CopyMagickString(format,p,MaxTextExtent);
- (void) FormatMagickString(p,MaxTextExtent,format,image->scene);
- break;
- }
- }
+ (void) FormatMagickStringNumeric(filename,MaxTextExtent,image->filename,
+ image->scene);
if (image_info->adjoin == MagickFalse)
if ((image->previous != (Image *) NULL) ||
(GetNextImageInList(image) != (Image *) NULL))
--- magick/display.c
+++ magick/display.c
@@ -1992,7 +1992,7 @@
/*
Form filename for multi-part images.
*/
- (void) FormatMagickString(filename,MaxTextExtent,
+ (void) FormatMagickStringNumeric(filename,MaxTextExtent,
image_info->filename,scene);
if (LocaleCompare(filename,image_info->filename) == 0)
(void) FormatMagickString(filename,MaxTextExtent,"%s.%lu",
--- magick/image.c
+++ magick/image.c
@@ -2847,25 +2847,8 @@
/*
Rectify multi-image file support.
*/
- (void) CopyMagickString(filename,image_info->filename,MaxTextExtent);
- for (p=strchr(filename,'%'); 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
- format[MaxTextExtent];
-
- (void) CopyMagickString(format,p,MaxTextExtent);
- (void) FormatMagickString(p,MaxTextExtent,format,image_info->scene);
- break;
- }
- }
+ (void) FormatMagickStringNumeric(filename,MaxTextExtent,
+ image_info->filename,image_info->scene);
if ((LocaleCompare(filename,image_info->filename) != 0) &&
(strchr(filename,'%') == (char *) NULL))
image_info->adjoin=MagickFalse;
--- magick/montage.c
+++ magick/montage.c
@@ -534,7 +534,7 @@
/*
Form filename for multi-part images.
*/
- (void) FormatMagickString(filename,MaxTextExtent,
+ (void) FormatMagickStringNumeric(filename,MaxTextExtent,
image_info->filename,scene);
if (LocaleCompare(filename,image_info->filename) == 0)
(void) FormatMagickString(filename,MaxTextExtent,"%s.%lu",
--- magick/string.c
+++ magick/string.c
@@ -960,6 +960,75 @@
% %
% %
% %
+% F o r m a t M a g i c k S t r i n g N u m e r i c %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% Method FormatMagickStringNumeric formats output for a single numeric
+% argument. It takes into account that the format string given might be
+% untrusted user input, and returns the length of the formatted string.
+%
+% The format of the FormatMagickStringNumeric method is:
+%
+% long FormatMagickStringNumeric(char *string,const size_t length,
+% const char *format,int value)
+%
+% A description of each parameter follows.
+%
+% o string: FormatMagickStringNumeric() returns the formatted string in this
+% character buffer.
+%
+% o length: The maximum length of the string.
+%
+% 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 long FormatMagickStringNumeric(char *string,const size_t length,const char *format,int value)
+{
+ char
+ *p;
+
+ (void) CopyMagickString(string, format, length);
+
+ 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),length-(p-format),p,value);
+ *q=c;
+ (void) ConcatenateMagickString(string,q,length);
+ if (*(q-1) == '%')
+ p++;
+ else
+ break;
+ }
+ }
+ return (long)strlen(string);
+}
+
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
% F o r m a t M a g i c k S t r i n g %
% %
% %
