private static void Main(string[] args)
{
var configuration = new ConfigurationSettings();
parse_arguments_and_set_up_configuration(configuration, args);
#if DEBUG
Console.WriteLine("FilePath='{0}'", configuration.FilePath);
Console.WriteLine("HashType='{0}'", configuration.HashType);
Console.WriteLine("HashToCheck={0}", configuration.HashToCheck);
#endif
configuration.FilePath = Path.GetFullPath(configuration.FilePath);
if (!File.Exists(configuration.FilePath))
{
Console.WriteLine("File '{0}' doesn't exist.", configuration.FilePath);
Environment.Exit(1);
}
HashAlgorithm hash_util = new MD5CryptoServiceProvider();
if (configuration.HashType.ToLowerSafe() == "sha1")
{
hash_util = new SHA1CryptoServiceProvider();
}
//todo: Wonder if we need to flip this for perf on very large files: http://stackoverflow.com/a/13926809
var hash = hash_util.ComputeHash(File.Open(configuration.FilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
string hash_string = BitConverter.ToString(hash).Replace("-",string.Empty);
if (string.IsNullOrWhiteSpace(configuration.HashToCheck))
{
Console.WriteLine(hash_string);
pause_execution_if_debug();
Environment.Exit(0);
}
var result = string.Compare(configuration.HashToCheck, hash_string, ignoreCase: true,culture:CultureInfo.InvariantCulture);
if (result != 0)
{
Console.WriteLine("Error - hashes do not match. Actual value was '{0}'.", hash_string);
Environment.ExitCode = 1;
}
else
{
Console.WriteLine("Hashes match.");
}
pause_execution_if_debug();
Environment.Exit(Environment.ExitCode);
}
/// <summary>
/// Parses the arguments and sets up the configuration
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="args">The arguments.</param>
private static void parse_arguments_and_set_up_configuration(ConfigurationSettings configuration, string[] args)
{
bool help = false;
OptionSet option_set = new OptionSet()
.Add("?|help|h",
"Prints out the options.",
option => help = option != null)
.Add("f=|file=",
"REQUIRED: file - The is the name of the file. The file should exist. You do not need to specify -f or -file in front of this argument.",
option => configuration.FilePath = option)
.Add("t=|type=|hashtype=",
"Optional: hashtype - 'md5' or 'sha1' Defaults to 'md5'.",
option => configuration.HashType = option)
.Add("c=|check=",
"check - the signature you want to check. Not case sensitive.",
option => configuration.HashToCheck = option)
;
try
{
var extra_args = option_set.Parse(args);
if (extra_args != null && extra_args.Count != 0)
{
if (string.IsNullOrWhiteSpace(configuration.FilePath))
{
configuration.FilePath = extra_args[0];
}
}
}
catch (OptionException)
{
show_help(option_set);
}
if (help) show_help(option_set);
if (string.IsNullOrWhiteSpace(configuration.FilePath)) show_help(option_set);
configuration.FilePath = configuration.FilePath.Replace("'", string.Empty).Replace("\"", string.Empty).Trim();
if (!string.IsNullOrWhiteSpace(configuration.HashType))
{
configuration.HashType = configuration.HashType.Trim();
}
else
{
configuration.HashType = "md5";
}
}
