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Use snprintf instead of sprintf #5567

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merged 2 commits into from Jul 1, 2021
Merged

Use snprintf instead of sprintf #5567

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5f4504b
Limit sprintf modes to 10 characters
radarhere Jun 15, 2021
518ee37
Use snprintf instead of sprintf
radarhere Jun 30, 2021
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10 changes: 4 additions & 6 deletions src/libImaging/Convert.c
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Expand Up @@ -1594,9 +1594,8 @@ convert(
#ifdef notdef
return (Imaging)ImagingError_ValueError("conversion not supported");
#else
static char buf[256];
/* FIXME: may overflow if mode is too large */
sprintf(buf, "conversion from %s to %s not supported", imIn->mode, mode);
static char buf[100];
sprintf(buf, "conversion from %.10s to %.10s not supported", imIn->mode, mode);
return (Imaging)ImagingError_ValueError(buf);
#endif
}
Expand Down Expand Up @@ -1645,11 +1644,10 @@ ImagingConvertTransparent(Imaging imIn, const char *mode, int r, int g, int b) {
}
#else
{
static char buf[256];
/* FIXME: may overflow if mode is too large */
static char buf[100];
sprintf(
buf,
"conversion from %s to %s not supported in convert_transparent",
"conversion from %.10s to %.10s not supported in convert_transparent",
imIn->mode,
mode);
return (Imaging)ImagingError_ValueError(buf);
Expand Down