ASP.NET Function of the Day: SessionId is "Too Legit to Quit".

So I was poking around the source code for how ASP.NET initiates session state etc… and noticed this method of the SessionId class. You gotta love the naming of this one. Steve McConnell (via Code Complete) would probably have recommended something like “IsValid” but he has no imagination nor flair.

internal static bool IsLegit(string s)
{
    bool flag1;

    if ((s == null) || (s.Length != 0x18))
    {
        return false;
    }

    try
    {
        int num1 = 0x18;
        while (--num1 >= 0)
        {
            char ch1 = s[num1];
            if (!SessionId.s_legalchars[ch1])
            {
                return false;
            }
        }
        flag1 = true;
    }
    catch (Exception)
    {
        flag1 = false;
    }
    return flag1;
}

MC Hammer would be proud!