[PATCH v2 1/4] kernelbase: Implement PathCchFindExtension.

[Nikolay Sivov]

On 11/19/18 6:11 AM, Zhiyi Zhang wrote:

> +    length = strlenW(path);
> +    if (length + 1 > PATHCCH_MAX_CCH)
> +    {
> +        *extension = NULL;
> +        return E_INVALIDARG;
> +    }
This doesn't look right. If it takes buffer length, that's the limit we 
should use.
So if you have to iterate you should probably stop at this give limit.

> +    next = path;
> +    while (*next)
> +    {
> +        if (*next == '\\' || *next == ' ')
> +            lastpoint = NULL;
> +        else if (*next == '.')
> +            lastpoint = next;
> +        next++;
> +    }
We'll need a test for size < length, and probably for forward slash too.

> +    if (!pPathCchFindExtension)
> +    {
> +        win_skip("PathCchFindExtension() is not available.\n");
> +        return;
> +    }
Maybe we can get rid of this, because it will never trigger if 
kernelbase is available. Probably 'hmod' check is enough to skip everything.