public async Task AuthenticateOffline(UserDto user, string password, bool rememberLogin)
{
var credentials = await _credentialProvider.GetServerCredentials().ConfigureAwait(false);
var server = credentials.Servers.FirstOrDefault(i => string.Equals(i.Id, user.ServerId, StringComparison.Ordinal));
if (server == null)
{
throw new UnauthorizedAccessException("Server info not found.");
}
var bytes = Encoding.UTF8.GetBytes(password ?? string.Empty);
var hash = BitConverter.ToString(_cryptographyProvider.CreateSha1(bytes)).Replace("-", string.Empty);
hash += Device.DeviceId;
bytes = Encoding.UTF8.GetBytes(hash);
hash = BitConverter.ToString(_cryptographyProvider.CreateSha1(bytes)).Replace("-", string.Empty);
if (!string.Equals(hash, user.OfflinePassword, StringComparison.Ordinal))
{
throw new UnauthorizedAccessException("Invalid username or password.");
}
server.AddOrUpdate(new ServerUserInfo
{
Id = user.Id,
IsSignedInOffline = rememberLogin
});
await _credentialProvider.SaveServerCredentials(credentials).ConfigureAwait(false);
}
private string GetSha1(string value)
{
var bytes = Encoding.UTF8.GetBytes(value ?? string.Empty);
return(BitConverter.ToString(_cryptographyProvider.CreateSha1(bytes)).Replace("-", string.Empty));
}
