// private methods...
void CheckMd5ForString(string message, string digest)
{
var actualMd5 = Md5Hash.Calculate(message);
var expectedMd5 = Md5Hash.Parse(digest);
Assert.That(actualMd5, Is.EqualTo(expectedMd5), "Md5 hashes are not equlas!");
}
public void PerfTest()
{
int count = 1000;
var list = Array.CreateInstance(typeof(byte[]), count) as byte[][];//;//>(count);
var hList = new Md5Hash[count];
hList.Initialize();
var random = new Random();
for (int i = 0; i < list.Length; i++)
{
var bytes = new byte[5];
random.NextBytes(bytes);
list[i] = bytes;
}
var dateTime = DateTime.Now;
for (int i = 0; i < hList.Length; i++)
{
var hash = Md5Hash.Calculate(list[i]);
hList[i] = hash;
}
var seconds = (DateTime.Now - dateTime).TotalSeconds;
Console.WriteLine(seconds);
Console.WriteLine(Math.Round(hList.Length / seconds));
}
public void Md5HashCodeTest()
{
var set = new HashSet <Md5Hash>();
for (int i = 0; i < int.MaxValue; i++)
{
Assert.IsTrue(set.Add(Md5Hash.Calculate(i.ToString())));
}
}
public void CalcFor0()
{
var md5 = Md5Hash.Calculate(new byte[1] {
0
});
string actual = md5.ToString();
Assert.AreEqual("93b885adfe0da089cdf634904fd59f71", actual);
}
/// <summary>
/// Calculates a md5 hash from a model
/// </summary>
public void UpdateHash()
{
using (var ms = new MemoryStream())
{
Hash = null;
Serializer.Serialize(ms, this);
ms.Position = 0;
Hash = Md5Hash.Calculate(ms);
}
}
public void Md5ToByteArrayTest()
{
var md5 = Md5Hash.Calculate(new byte[0]);
string actual = md5.ToString();
Assert.AreEqual("d41d8cd98f00b204e9800998ecf8427e", actual);
var bytes = md5.ToByteArray();
var actualMd5 = new Md5Hash(bytes);
Assert.AreEqual(md5, actualMd5);
}
public void Md5CompareWithNative()
{
const int count = 10000;
var bytes = new List <byte>(count);
for (int i = 0; i < count; i++)
{
bytes.Add((byte)i);
var md5 = Md5Hash.Calculate(bytes.ToArray());
var nativeMd5 = Md5Hash.CalculateNative(bytes.ToArray());
Assert.That(md5, Is.EqualTo(nativeMd5));
}
}
public void CalcForEnumerable()
{
int count = 12345678;
var list = new List <byte>(count);
for (int i = 0; i < count; i++)
{
list.Add((byte)i);
}
var md5 = Md5Hash.Calculate(list);
string actual = md5.ToString();
Assert.AreEqual("c509d961f3bca4f02402c0e2798a1324", actual);
}
public string HashBasedWithErrorThresoldSelection(string fileToken, string[] fileSources)
{
var fileHash = Md5Hash.Calculate(fileToken);
var sourcesByHash = fileSources.OrderBy(s => Md5Hash.Calculate(s) ^ fileHash).Select(s => s).ToList();
for (int i = 0; i < sourcesByHash.Count - 1; i++)
{
if (GetErrorsPercent(sourcesByHash[i]) - ErrorThresold <= GetErrorsPercent(sourcesByHash[i + 1]))
{
return(sourcesByHash[i]);
}
}
return(sourcesByHash[sourcesByHash.Count - 1]);
}
public void CalcForFile()
{
var name = Path.GetTempFileName();
var fs = File.Open(name, FileMode.Append);
var bw = new BinaryWriter(fs);
for (int i = 0; i < 12345678; i++)
{
bw.Write((byte)i);
}
fs.Dispose();
fs = File.Open(name, FileMode.Open);
var md5 = Md5Hash.Calculate(fs);
fs.Dispose();
File.Delete(name);
string actual = md5.ToString();
Assert.AreEqual("c509d961f3bca4f02402c0e2798a1324", actual);
}
private new void Update()
{
try
{
Status("Load update info...");
// get update index
var req = WebRequest.Create("http://update.utopiarealms.com/index.update");
using (var response = req.GetResponse())
using (var stream = response.GetResponseStream())
using (var zs = new GZipStream(stream, CompressionMode.Decompress))
{
var reader = new BinaryReader(zs);
_updateFile = new UpdateFile();
_updateFile.Load(reader);
}
var indexPath = Path.Combine(_basePath, "update.index");
UpdateFile previousUpdate = null;
if (File.Exists(indexPath))
{
using (var fs = File.OpenRead(indexPath))
using (var zs = new GZipStream(fs, CompressionMode.Decompress))
{
var reader = new BinaryReader(zs);
previousUpdate = new UpdateFile();
previousUpdate.Load(reader);
}
}
Status("Check files to update...");
var files = new List <UpdateFileInfo>();
foreach (var file in _updateFile.Files)
{
var filePath = Path.Combine(_basePath, file.SystemPath);
if (File.Exists(filePath))
{
using (var fs = File.OpenRead(filePath))
{
var hash = Md5Hash.Calculate(fs);
if (hash.ToString() == file.Md5Hash && fs.Length == file.Length)
{
continue;
}
}
}
files.Add(file);
}
float index = 0f;
foreach (var file in files)
{
Status("Updating " + file.SystemPath, index / files.Count);
try
{
var filePath = Path.Combine(_basePath, file.SystemPath);
if (!Directory.Exists(Path.GetDirectoryName(filePath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
}
var fileReq = WebRequest.Create(file.DownloadUri);
using (var response = fileReq.GetResponse())
using (var fs = File.OpenWrite(filePath))
{
fs.SetLength(0);
using (var stream = response.GetResponseStream())
{
if (file.Compressed)
{
using (var zip = new GZipStream(stream, CompressionMode.Decompress))
{
zip.CopyTo(fs);
}
}
else
{
stream.CopyTo(fs);
}
}
}
}
catch (Exception x)
{
MessageBox.Show(x.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
Application.Exit();
}
index++;
}
// delete removed files
if (previousUpdate != null)
{
foreach (var removedFile in _updateFile.GetRemovedFiles(previousUpdate))
{
var fullPath = Path.Combine(_basePath, removedFile);
if (File.Exists(fullPath))
{
File.Delete(fullPath);
}
}
}
if (File.Exists(indexPath))
{
File.Delete(indexPath);
}
// save index for future update
using (var fs = File.OpenWrite(indexPath))
using (var zs = new GZipStream(fs, CompressionMode.Compress))
{
var writer = new BinaryWriter(zs);
_updateFile.Save(writer);
}
// save current token
File.WriteAllText(Path.Combine(_basePath, "update.token"), _updateFile.UpdateToken);
StartGame();
}
catch (Exception x)
{
MessageBox.Show(string.Format("Exception occured: {0}\nPlease post this information to the forum at http://utopiarealms.com", x.Message), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// Gets md5 hash of the chunk data (blocks and entities)
/// </summary>
/// <returns></returns>
public Md5Hash GetMd5Hash()
{
return(Md5HashData ?? (Md5HashData = Md5Hash.Calculate(GetBytesForHash())));
}