mirror of
https://github.com/Radarr/Radarr.git
synced 2024-09-11 03:52:33 +02:00
90 lines
2.5 KiB
C#
90 lines
2.5 KiB
C#
using System;
|
|
using System.Security.Cryptography;
|
|
using System.Text;
|
|
using System.Threading;
|
|
|
|
namespace NzbDrone.Common
|
|
{
|
|
public static class HashUtil
|
|
{
|
|
//This should never be changed. very bad things will happen!
|
|
private static readonly DateTime Epoch = new DateTime(2010, 1, 1);
|
|
|
|
private static readonly object _lock = new object();
|
|
|
|
public static string CalculateCrc(string input)
|
|
{
|
|
uint mCrc = 0xffffffff;
|
|
byte[] bytes = Encoding.UTF8.GetBytes(input);
|
|
foreach (byte myByte in bytes)
|
|
{
|
|
mCrc ^= ((uint)(myByte) << 24);
|
|
for (var i = 0; i < 8; i++)
|
|
{
|
|
if ((Convert.ToUInt32(mCrc) & 0x80000000) == 0x80000000)
|
|
{
|
|
mCrc = (mCrc << 1) ^ 0x04C11DB7;
|
|
}
|
|
else
|
|
{
|
|
mCrc <<= 1;
|
|
}
|
|
}
|
|
}
|
|
return String.Format("{0:x8}", mCrc);
|
|
}
|
|
|
|
public static string GenerateUserId()
|
|
{
|
|
return GenerateId("u");
|
|
}
|
|
|
|
public static string GenerateAppId()
|
|
{
|
|
return GenerateId("a");
|
|
}
|
|
|
|
public static string GenerateApiToken()
|
|
{
|
|
return Guid.NewGuid().ToString().Replace("-", "");
|
|
}
|
|
|
|
public static string GenerateSecurityToken(int length)
|
|
{
|
|
var byteSize = (length / 4) * 3;
|
|
|
|
var linkBytes = new byte[byteSize];
|
|
var rngCrypto = new RNGCryptoServiceProvider();
|
|
rngCrypto.GetBytes(linkBytes);
|
|
var base64String = Convert.ToBase64String(linkBytes);
|
|
|
|
return base64String;
|
|
}
|
|
|
|
private static string GenerateId(string prefix)
|
|
{
|
|
lock (_lock)
|
|
{
|
|
Thread.Sleep(1);
|
|
var tick = (DateTime.Now - Epoch).Ticks;
|
|
return prefix + "." + ToBase(tick);
|
|
}
|
|
}
|
|
|
|
private static string ToBase(long input)
|
|
{
|
|
const string BASE_CHARS = "0123456789abcdefghijklmnopqrstuvwxyz";
|
|
int targetBase = BASE_CHARS.Length;
|
|
|
|
var result = new StringBuilder();
|
|
do
|
|
{
|
|
result.Append(BASE_CHARS[(int)(input % targetBase)]);
|
|
input /= targetBase;
|
|
} while (input > 0);
|
|
|
|
return result.ToString();
|
|
}
|
|
|
|
}
|
|
} |