static void Main(string[] args)
{
Options opts = new Options();
if (CommandLine.Parser.Default.ParseArguments(args, opts))
{
try
{
GenerateMyPassword(opts);
}
catch (Exception exp)
{
Console.WriteLine(exp.Message);
Console.WriteLine(opts.GetUsage());
}
}
Console.ReadKey();
}
static bool ShouldAvoidAmbiguous(Options options, char letter)
{
bool shouldAvoidAmbiguous = true;
if (Boolean.TryParse(options.AvoidAmbiguous, out shouldAvoidAmbiguous))
{
if (shouldAvoidAmbiguous)
{
Regex ambiguous = new Regex("[oO0l1]+");
return ambiguous.IsMatch(String.Format("{0}", letter));
}
}
else
ThrowInvalidOptionArgument(Options.commandOptionAvoidAmbiguous, options.AvoidAmbiguous);
return false;
}
static void GenerateMyPassword(Options options)
{
if (options.Length < 3 || options.Length > 20)
{
throw new GMPWException("Need a number between [3-20] as argument.");
}
List<KeyValuePair<int, String>> dulList = new List<KeyValuePair<int, String>>();
dulList.Add(new KeyValuePair<int, String>(options.NumberOfDigit, Options.commandOptionDigit));
dulList.Add(new KeyValuePair<int, String>(options.NumberOfUpper, Options.commandOptionUpper));
dulList.Add(new KeyValuePair<int, String>(options.NumberOfLower, Options.commandOptionLower));
dulList.Add(new KeyValuePair<int, String>(options.NumberOfSymbol, Options.commandOptionSymbol));
dulList.Sort((x, y) => y.Key - x.Key);
Dictionary<String, int> dulMap = new Dictionary<String, int>();
Random rand = new Random(Environment.TickCount);
int dulListIter = 0;
dulList.ForEach(
delegate(KeyValuePair<int, String> x) {
int usedCapacity = dulMap.Aggregate(0, (sum, value) =>
{
sum += value.Value;
return sum;
});
if (usedCapacity > options.Length)
AssertFailure();
if (x.Key == -1)
{
int number = 0;
if (dulListIter == dulList.Count - 1)
number = options.Length - usedCapacity;
else
number = rand.Next(options.Length - usedCapacity);
dulMap.Add(x.Value, number);
}
else
{
if ((x.Key < -1) || (x.Key > options.Length - usedCapacity))
ThrowInvalidOptionArgument(x.Value, x.Key);
if (dulListIter == dulList.Count - 1)
if (usedCapacity + x.Key != options.Length)
ThrowInvalidOptionArgument(Options.commandOptionLength, options.Length);
dulMap.Add(x.Value, x.Key);
}
++ dulListIter;
}
);
String pwInfo = String.Format("numbers : {0}\nlower letters: {1}\nupper letters: {2}\nsymbol letters: {3}\n",
dulMap[Options.commandOptionDigit],
dulMap[Options.commandOptionLower],
dulMap[Options.commandOptionUpper],
dulMap[Options.commandOptionSymbol]);
StringBuilder pwBuilder = new StringBuilder();
while (dulMap[Options.commandOptionDigit] > 0 ||
dulMap[Options.commandOptionUpper] > 0 ||
dulMap[Options.commandOptionLower] > 0 ||
dulMap[Options.commandOptionSymbol] > 0)
{
int picker = rand.Next(4);
switch (picker)
{
case 0:
if (dulMap[Options.commandOptionDigit] > 0)
{
Char c = rand.Next(10).ToString().ElementAt(0);
if (!ShouldAvoidAmbiguous(options, c))
{
pwBuilder.Append(c);
--dulMap[Options.commandOptionDigit];
}
}
break;
case 1:
if (dulMap[Options.commandOptionLower] > 0)
{
Char c = (Char)(rand.Next(26) + 97);
if (!ShouldAvoidAmbiguous(options, c))
{
pwBuilder.Append(c);
-- dulMap[Options.commandOptionLower];
}
}
break;
case 2:
if (dulMap[Options.commandOptionUpper] > 0)
{
Char c = (Char)(rand.Next(26) + 65);
if (!ShouldAvoidAmbiguous(options, c))
{
pwBuilder.Append(c);
-- dulMap[Options.commandOptionUpper];
}
}
break;
case 3:
if (dulMap[Options.commandOptionSymbol] > 0)
{
String symbols = "`~!@#$%^&*()_+-=[]{}\\|';\":/.,?><";
pwBuilder.Append(symbols.ElementAt(rand.Next(symbols.Length)));
-- dulMap[Options.commandOptionSymbol];
}
break;
default:
AssertFailure();
break;
}
}
myPassword = pwBuilder.ToString();
Console.WriteLine(pwInfo);
Console.WriteLine(myPassword);
}
