On Thu, Nov 22, 2012 at 5:28 PM, Alexander Hall <alexan...@beard.se> wrote:
> The corresponding part in yubikey_hex_decode is for consistency and,
> IMO, sanity, allowing mixed case hex strings, e.g. /var/db/yubikey/*.
>
> Comments? OK? (Don't mess with the from-upstream-derived yubikey.c?)
...
> -               if ((p1 = strchr(hex_trans, *src)) == NULL)
> +               if ((p1 = strchr(hex_trans, tolower(*src))) == NULL)

The argument to tolower() must be a value in the range [EOF,
0..UCHAR_MAX].  When taking characters from a char * string, you need
to cast the value to (unsigned char), ala
       tolower((unsigned char)*src)


Philip Guenther

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