/// <summary>
/// Counts the total number of records in a local instance of Pwned Passwords.
/// </summary>
/// <param name="args">The command-line argments passed to the application.</param>
private static void CardinalityMode(string[] args)
{
// Check database file path was passed.
if (args.Length < 2)
{
Console.WriteLine("Pwned Passwords database file must be specified.");
return;
}
// Check file exists.
var filename = args[1];
if (!File.Exists(filename))
{
Console.WriteLine($"Could not read Pwned Passwords database at '{filename}'.");
return;
}
// Pass output back to user.
var service = new LocalFilePwnedFrequencyExtractor(filename);
Console.WriteLine($"Computing cardinality of database at '{filename}'...");
Console.WriteLine($"{service.GetCardinality()} individual passwords found.");
}
/// <summary>
/// Retrieves frequencies from a local instance of Pwned Passwords.
/// </summary>
/// <param name="args">The command-line arguments passed to the application.</param>
private static void FrequencyMode(string[] args)
{
// Check database file path was passed.
if (args.Length < 2)
{
Console.WriteLine("Pwned Passwords database file must be specified.");
return;
}
// Check file exists.
var filename = args[1];
if (!File.Exists(filename))
{
Console.WriteLine($"Could not read Pwned Passwords database at '{filename}'.");
return;
}
// Check query type was specified.
if (args.Length < 3)
{
Console.WriteLine("Query type must be specified (-l or -t).");
return;
}
// Get ready to query file.
var service = new LocalFilePwnedFrequencyExtractor(filename);
IList <int> results = new List <int>();
// Switch on query type.
switch (args[2])
{
case "-l":
// Check limit was specified.
if (args.Length < 4)
{
Console.WriteLine("Limit must be specified.");
return;
}
// Check limit parses as an integer.
if (!int.TryParse(args[3], out var limit))
{
Console.WriteLine("Invalid limit provided.");
return;
}
results = service.GetAbove(limit); // Get frequencies above `limit`.
break;
case "-t":
// Check count was specified.
if (args.Length < 4)
{
Console.WriteLine("Count must be specified.");
return;
}
// Check count parses as an integer.
if (!int.TryParse(args[3], out var count))
{
Console.WriteLine("Invalid count provided.");
return;
}
results = service.GetTop(count); // Get `count` top frequencies.
break;
default:
// Invalid query type specified.
Console.WriteLine("Invalid query type specified (Use -h for help).");
break;
}
// Output goes straight to console.
foreach (var entry in results)
{
Console.WriteLine(entry);
}
}
