public void ComputeHashOfCurrentDirectory()
{
// Given
HashProvider hp = new HashProvider();
DirectoryInfo currentDir = new DirectoryInfo(new TestConfiguration().GetRootPath());
if (!currentDir.EnumerateFiles("*", SearchOption.AllDirectories).Any())
{
File.Create(Path.Combine(currentDir.FullName, string.Format("{0}.test", Guid.NewGuid().ToString("B")))).Dispose();
}
// When
byte[] hash1 = hp.ComputeHash(currentDir);
byte[] hash2 = hp.ComputeHash(currentDir);
File.Create(Path.Combine(currentDir.FullName, string.Format("{0}.test", Guid.NewGuid().ToString("B")))).Dispose();
byte[] hashChanged = hp.ComputeHash(currentDir);
// Then
Assert.That(hash1, Is.Not.Null);
Assert.That(hash2, Is.Not.Null);
Assert.That(hashChanged, Is.Not.Null);
CollectionAssert.AllItemsAreNotNull(hash1);
CollectionAssert.AllItemsAreNotNull(hash2);
CollectionAssert.AllItemsAreNotNull(hashChanged);
Assert.That(hash1.SequenceEqual(hash2), Is.True);
Assert.That(hash2.SequenceEqual(hashChanged), Is.False);
}
public void Given_String_Compute_Hash_Calculates_Correct_MD5_Hash()
{
var dotNetGroupValue = "DotNetGroup";
var dotNetGroupHash = "4779ccd6ffccfac7cf91cfe585d02db0";
var hashProvider = new HashProvider(new MD5CryptoServiceProvider());
var hash = hashProvider.ComputeHash(dotNetGroupValue);
Assert.That(hash, Is.EqualTo(dotNetGroupHash));
}
public void HashProvider_ComputeHash_ReturnsExpectedByte()
{
HashProvider hashProvider = new HashProvider();
byte[] dataBytes = Encoding.UTF8.GetBytes(data);
byte[] actualHash = hashProvider.ComputeHash(dataBytes);
string actualHashString = BitConverter.ToString(actualHash).Replace("-", string.Empty);
Assert.AreEqual(dataExpectedHash, actualHashString);
}
public void ShouldBeAbleToHashString()
{
//Arrange
var target = new HashProvider();
var theString = "test";
//Act
var result = target.ComputeHash(theString);
//Assert
Assert.Equal("7iaw3Ur350mqGo7jwQrpkj9hiYB3Lkc/iBml1JQODbJ6wYX4oOHV+E+IvIh/1nsUNzLDBMxfqa2Ob1f1ACio/w==", result);
}
public void ComputeHashOnEmptyDirectory()
{
// Given
HashProvider hp = new HashProvider();
DirectoryInfo emptyDir = new DirectoryInfo(Path.Combine(new TestConfiguration().GetRootPath(), Guid.NewGuid().ToString("B")));
emptyDir.Create();
// When
byte[] hash = hp.ComputeHash(emptyDir);
// Then
Assert.That(hash, Is.Not.Null);
Assert.That(hash.All(b => b == 0));
emptyDir.Delete();
}
private static void AddInitialUserAccounts(AppDBContext context, SecurityOptions securityOptions)
{
if (context.Users.Any() == false)
{
var password = "******";
string hashedPassword = HashProvider.ComputeHash(password, HashProvider.HashAlgorithmList.SHA256, securityOptions.PasswordSalt);
var users = new User[]
{
new User
{
DisplayName = "Dezi Van Vuuren",
FirstName = "Dezi",
Surname = "Van Vuuren",
EmailAddress = "*****@*****.**",
Password = hashedPassword,
UserID = Guid.NewGuid(),
CreatedDateTime = DateTime.UtcNow,
CreatedUserID = Guid.Empty,
EditDateTime = DateTime.UtcNow,
EditUserID = Guid.Empty,
}
};
foreach (User s in users)
{
context.Users.Add(s);
var adminRole = context.UserRoles.Where(x => x.EventCode == PublicEnums.UserRoleList.ROLE_ADMINISTRATOR).First();
LinkUserRole roleLink = new LinkUserRole()
{
LinkUserRoleID = Guid.NewGuid(),
UserID = s.UserID,
UserRoleID = adminRole.UserRoleID
};
context.LinkUserRole.Add(roleLink);
}
context.SaveChanges();
}
}
internal async Task <bool> ChangePassword()
{
UserHelperFunctions userHelper = new UserHelperFunctions()
{
_context = _context,
_securityOptions = _securityOptions,
_user = _user
};
userHelper.Populate();
bool returnValue = false;
if (Guid.TryParse(T, out Guid tResult))
{
var userToken = _context.UserTemporaryToken.Where(x => x.UserTemporaryTokenID == tResult).FirstOrDefault();
if (userToken != null)
{
var user = _context.Users.Where(x => x.UserID == userToken.UserID).FirstOrDefault();
if (user != null)
{
var hashedPassword = HashProvider.ComputeHash(Password, HashProvider.HashAlgorithmList.SHA256, _securityOptions.PasswordSalt);
user.Password = hashedPassword;
user.IsSuspended = false;
user.LoginTries = 0;
user.EditUserID = user.UserID;
user.EditDateTime = DateTime.UtcNow;
user.EditUserID = userHelper.loggedInUserID;
_context.Update(user);
await _context.SaveChangesAsync();
returnValue = true;
}
}
}
return(returnValue);
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main(string[] args)
{
while (true)
{
// Request a plain text value from the user.
string enterValuePrompt = "Enter a value to hash (press Ctrl+C to exit)";
Console.WriteLine(enterValuePrompt);
Console.WriteLine("".PadLeft(enterValuePrompt.Length, '='));
Console.WriteLine();
string plainValue = Console.ReadLine();
// If the value entered is null (Ctrl+C),
// break from the loop to close the program.
if (plainValue == null)
{
break;
}
// Display a title above the hashed value output.
string hashedValueTitle = "Hashed Value";
Console.WriteLine();
Console.WriteLine(hashedValueTitle);
Console.WriteLine("".PadLeft(hashedValueTitle.Length, '='));
Console.WriteLine();
// Compute the hashed value.
IHashProvider hashProvider = new HashProvider();
string hashedValue = hashProvider.ComputeHash(plainValue);
// Display the hashed value.
Console.WriteLine(hashedValue);
Console.WriteLine();
}
}
private string GetHexHashSignature(string payload)
{
byte[] hash = HashProvider.ComputeHash(Encoding.UTF8.GetBytes(payload));
return(BitConverter.ToString(hash).Replace("-", "").ToLower());
}
public void Given_Null_Value_Compute_Hash_Throws()
{
var hashProvider = new HashProvider();
Assert.Throws <ArgumentNullException>(() => hashProvider.ComputeHash(null));
}
public IEnumerable <IDelta> GetDeltas(Stream inputStream)
{
if (inputStream == null)
{
throw new ArgumentNullException("inputStream");
}
if (_initialized == false)
{
throw new InvalidOperationException("Initialize must be called");
}
ChecksumProvider.Reset();
var slidingBuffer = new SlidingStreamBuffer(inputStream, _blockSize);
slidingBuffer.Warmup();
bool startingNewBlock = true;
long offset = 0;
var deltas = new List <IDelta>();
var currentByteDelta = new ByteDelta();
#if DEBUG
Statistics.Matching = 0;
Statistics.PossibleMatches = 0;
Statistics.NonMatching = 0;
#endif
int currentBlockSize;
while ((currentBlockSize = (int)slidingBuffer.GetNumBytesAvailable()) > 0)
{
// Deal with signed integer limits
if (IsSignedIntLength(offset - currentByteDelta.Offset))
{
currentByteDelta.Length = (int)(offset - currentByteDelta.Offset);
deltas.Add(currentByteDelta);
startingNewBlock = true;
}
if (startingNewBlock)
{
currentByteDelta = new ByteDelta {
Offset = offset
};
ChecksumProvider.ProcessBlock(slidingBuffer.GetBuffer(), 0, currentBlockSize);
}
else if (currentBlockSize < _blockSize)
{
ChecksumProvider.TrimFront(); // remaining bytes < block_size, so read nothing new - just trim
}
else
{
ChecksumProvider.RollByte(slidingBuffer[(int)(currentBlockSize - 1)]);
}
// at this point, sigGen needs the last byte of the current block
uint currentBlockChecksum = ChecksumProvider.Value;
ushort currentBlockChecksumHash = RollingChecksum.HashChecksum(currentBlockChecksum);
if (_remoteBlocksIndexTable.ContainsKey(currentBlockChecksumHash))
{
List <HashBlock> possibleRemoteBlockMatches = _remoteBlocksIndexTable[currentBlockChecksumHash];
if (possibleRemoteBlockMatches.Any(entry => entry.Checksum == currentBlockChecksum))
{
#if DEBUG
++Statistics.PossibleMatches;
#endif
byte[] currentBlockHash = HashProvider.ComputeHash(slidingBuffer.GetBuffer(), 0,
(int)currentBlockSize);
HashBlock matchingTargetBlock;
if ((matchingTargetBlock =
possibleRemoteBlockMatches.FirstOrDefault(
entry => entry.Hash.SequenceEqual(currentBlockHash))) != null)
{
#if DEBUG
Statistics.Matching += 1;
#endif
if ((currentByteDelta.Length = (int)(offset - currentByteDelta.Offset)) > 0)
{
deltas.Add(currentByteDelta);
}
deltas.Add(new CopyDelta
{
Offset = matchingTargetBlock.Offset,
Length = matchingTargetBlock.Length
});
slidingBuffer.MoveForward((int)currentBlockSize);
offset += currentBlockSize;
startingNewBlock = true;
continue;
}
}
}
#if DEBUG
++Statistics.NonMatching;
#endif
slidingBuffer.MoveForward(1);
++offset;
startingNewBlock = false;
}
Statistics.FileLength = offset;
if (!startingNewBlock && (currentByteDelta.Length = (int)(offset - currentByteDelta.Offset)) > 0)
{
deltas.Add(currentByteDelta);
}
#if DEBUG
Statistics.FileLength = offset;
#endif
return(deltas);
}
public async Task <Guid> Save()
{
UserHelperFunctions userHelper = new UserHelperFunctions()
{
_context = _context,
_emailService = _emailService,
_securityOptions = _securityOptions,
_user = _user
};
userHelper.Populate();
bool isNew = false;
bool isWasRemoved = false;
string tempPassword = "";
PublicEnums.EmailTemplateList emailTemplate = PublicEnums.EmailTemplateList.NTF_REGISTRATION_WELCOME_CUSTOM;
//Save user details
var user = _context.Users.FirstOrDefault(x => x.UserID == UserID);
if (user == null)
{
//Check user not deleted before
user = _context.Users.FirstOrDefault(x => ((x.EmailAddress == EmailAddress && x.EmailAddress != null)) && x.IsRemoved == true);
if (user == null)
{
//Perform dup-check
user = _context.Users.FirstOrDefault(x => ((x.EmailAddress == EmailAddress && x.EmailAddress != null)) && x.IsRemoved == false);
if (user == null)
{
user = new User();
isNew = true;
user.UserID = Guid.NewGuid();
user.IsSuspended = false;
user.LoginTries = 0;
user.CreatedUserID = userHelper.loggedInUserID;
user.CreatedDateTime = DateTime.UtcNow;
user.IsRemoved = false;
tempPassword = HelperFunctions.GeneratePassword(8);
if (!string.IsNullOrEmpty(_tmpPassword))
{
tempPassword = _tmpPassword;
}
user.Password = HashProvider.ComputeHash(tempPassword, HashProvider.HashAlgorithmList.SHA256, _securityOptions.PasswordSalt);
_tmpPassword = tempPassword;
}
else
{
errorMessage = "The user email address already exists. Find the existing user first and edit their details";
return(Guid.Empty);
}
}
else
{
tempPassword = HelperFunctions.GeneratePassword(8);
if (!string.IsNullOrEmpty(_tmpPassword))
{
tempPassword = _tmpPassword;
}
user.Password = HashProvider.ComputeHash(tempPassword, HashProvider.HashAlgorithmList.SHA256, _securityOptions.PasswordSalt);
_tmpPassword = tempPassword;
user.IsRemoved = false;
isWasRemoved = true;
}
}
user.DisplayName = DisplayName;
user.EmailAddress = EmailAddress;
user.IsSuspended = IsSuspended;
user.LoginTries = (IsSuspended == false) ? 0 : user.LoginTries;
user.EditUserID = userHelper.loggedInUserID;
user.EditDateTime = DateTime.UtcNow;
user.FirstName = FirstName;
user.Surname = Surname;
user.Timezone = SelectedTimezone;
if (isNew)
{
_context.Add(user);
}
else
{
_context.Update(user);
}
if (isNew || isWasRemoved)
{
#region Send new user registration email
if (!string.IsNullOrEmpty(EmailAddress))
{
emailTemplate = PublicEnums.EmailTemplateList.NTF_REGISTRATION_WELCOME_CUSTOM;
var variables = new Dictionary <string, PropertyMetaData>
{
{ "HostUrl", new PropertyMetaData {
Type = typeof(string), Value = _securityOptions.WebsiteHostUrl
} },
{ "DisplayName", new PropertyMetaData {
Type = typeof(string), Value = DisplayName
} },
{ "Password", new PropertyMetaData {
Type = typeof(string), Value = tempPassword
} },
{ "Username", new PropertyMetaData {
Type = typeof(string), Value = EmailAddress
} }
};
await _emailService.SendEmailAsync(new List <string>() { EmailAddress }, "Welcome", emailTemplate, variables, _user);
}
#endregion
}
await ClearUserRoles(user.UserID);
await AddSelectedUserRoles(user.UserID);
await _context.SaveChangesAsync();
UserID = user.UserID;
return(UserID);
}
internal async Task <bool> Register()
{
bool isNew = false;
if (string.IsNullOrEmpty(FirstName))
{
_errorMessage = "Please enter a Name";
return(false);
}
else if (string.IsNullOrEmpty(Surname))
{
_errorMessage = "Please enter a Surname";
return(false);
}
else if (string.IsNullOrEmpty(EmailAddress))
{
_errorMessage = "Please enter a Email";
return(false);
}
else if (string.IsNullOrEmpty(Password))
{
_errorMessage = "Please enter a Password";
return(false);
}
else if (Password != ConfirmPassword)
{
_errorMessage = "The password and Confirm Password must match";
return(false);
}
var user = _context.Users.FirstOrDefault(x => ((x.EmailAddress == EmailAddress && x.EmailAddress != null)));
if (user == null)
{
user = new User();
isNew = true;
user.UserID = Guid.NewGuid();
user.IsSuspended = false;
user.LoginTries = 0;
user.CreatedUserID = user.UserID;
user.CreatedDateTime = DateTime.UtcNow;
user.IsRemoved = false;
user.Password = HashProvider.ComputeHash(Password, HashProvider.HashAlgorithmList.SHA256, _securityOptions.PasswordSalt);
}
else
{
_errorMessage = "The user email address already exists. Find the existing user first and edit their details";
return(false);
}
user.DisplayName = DisplayName;
user.EmailAddress = EmailAddress;
user.IsSuspended = false;
user.LoginTries = 0;
user.EditUserID = user.UserID;
user.EditDateTime = DateTime.UtcNow;
user.FirstName = FirstName;
user.Surname = Surname;
user.Timezone = _context.SystemConfiguration.First(x => x.EventCode == PublicEnums.SystemConfigurationList.KEY_DEFAULT_TIME_ZONE.ToString()).ConfigValue;
if (isNew)
{
_context.Add(user);
//Add default student user role
LinkUserRole link = new LinkUserRole();
link.LinkUserRoleID = Guid.NewGuid();
link.UserID = user.UserID;
link.UserRoleID = _context.UserRoles.First(x => x.EventCode == PublicEnums.UserRoleList.ROLE_USER).UserRoleID;
link.CreatedUserID = user.UserID;
link.EditUserID = user.UserID;
_context.Add(link);
}
else
{
_context.Update(user);
}
await _context.SaveChangesAsync();
return(true);
}
