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auth service

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This commit is contained in:
Kyle Spearrin 2019-04-18 09:45:31 -04:00
parent b61355a8fa
commit 43948c65f1
6 changed files with 381 additions and 0 deletions
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5
src/App/Services/MobilePlatformUtilsService.cs
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@ -106,6 +106,11 @@ namespace Bit.App.Services
return AppInfo.VersionString; return AppInfo.VersionString;
} }
public bool SupportsDuo()
{
return true;
}
public bool SupportsU2f() public bool SupportsU2f()
{ {
return false; return false;

23
src/Core/Abstractions/IAuthService.cs Normal file
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@ -0,0 +1,23 @@
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Bit.Core.Enums;
using Bit.Core.Models.Domain;
namespace Bit.Core.Abstractions
{
public interface IAuthService
{
string Email { get; set; }
string MasterPasswordHash { get; set; }
TwoFactorProviderType? SelectedTwoFactorProviderType { get; set; }
Dictionary<TwoFactorProviderType, Dictionary<string, object>> TwoFactorProviders { get; set; }
TwoFactorProviderType? GetDefaultTwoFactorProvider(bool u2fSupported);
List<TwoFactorProvider> GetSupportedTwoFactorProviders();
Task<AuthResult> LogInAsync(string email, string masterPassword);
Task<AuthResult> LogInCompleteAsync(string email, string masterPassword, TwoFactorProviderType twoFactorProvider, string twoFactorToken, bool? remember = null);
Task<AuthResult> LogInTwoFactorAsync(TwoFactorProviderType twoFactorProvider, string twoFactorToken, bool? remember = null);
void LogOut(Action callback);
}
}

1
src/Core/Abstractions/IPlatformUtilsService.cs
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@ -24,5 +24,6 @@ namespace Bit.Core.Abstractions
void ShowToast(string type, string title, string text, Dictionary<string, object> options = null); void ShowToast(string type, string title, string text, Dictionary<string, object> options = null);
void ShowToast(string type, string title, string[] text, Dictionary<string, object> options = null); void ShowToast(string type, string title, string[] text, Dictionary<string, object> options = null);
bool SupportsU2f(); bool SupportsU2f();
bool SupportsDuo();
} }
} }

11
src/Core/Models/Domain/AuthResult.cs Normal file
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@ -0,0 +1,11 @@
using Bit.Core.Enums;
using System.Collections.Generic;
namespace Bit.Core.Models.Domain
{
public class AuthResult
{
public bool TwoFactor { get; set; }
public Dictionary<TwoFactorProviderType, Dictionary<string, object>> TwoFactorProviders { get; set; }
}
}

14
src/Core/Models/Domain/TwoFactorProvider.cs Normal file
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@ -0,0 +1,14 @@
using Bit.Core.Enums;
namespace Bit.Core.Models.Domain
{
public class TwoFactorProvider
{
public TwoFactorProviderType Type { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public int Priority { get; set; }
public int Sort { get; set; }
public bool Premium { get; set; }
}
}

327
src/Core/Services/AuthService.cs Normal file
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@ -0,0 +1,327 @@
using Bit.Core.Abstractions;
using Bit.Core.Enums;
using Bit.Core.Exceptions;
using Bit.Core.Models.Domain;
using Bit.Core.Models.Request;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace Bit.Core.Services
{
public class AuthService : IAuthService
{
private readonly ICryptoService _cryptoService;
private readonly IApiService _apiService;
private readonly IUserService _userService;
private readonly ITokenService _tokenService;
private readonly IAppIdService _appIdService;
private readonly II18nService _i18nService;
private readonly IPlatformUtilsService _platformUtilsService;
private readonly IMessagingService _messagingService;
private readonly bool _setCryptoKeys;
private SymmetricCryptoKey _key;
private KdfType? _kdf;
private int? _kdfIterations;
private Dictionary<TwoFactorProviderType, TwoFactorProvider> _twoFactorProviders;
public AuthService(
ICryptoService cryptoService,
IApiService apiService,
IUserService userService,
ITokenService tokenService,
IAppIdService appIdService,
II18nService i18nService,
IPlatformUtilsService platformUtilsService,
IMessagingService messagingService,
bool setCryptoKeys = true)
{
_cryptoService = cryptoService;
_apiService = apiService;
_userService = userService;
_tokenService = tokenService;
_appIdService = appIdService;
_i18nService = i18nService;
_platformUtilsService = platformUtilsService;
_messagingService = messagingService;
_setCryptoKeys = setCryptoKeys;
_twoFactorProviders = new Dictionary<TwoFactorProviderType, TwoFactorProvider>();
_twoFactorProviders.Add(TwoFactorProviderType.Authenticator, new TwoFactorProvider
{
Type = TwoFactorProviderType.Authenticator,
Priority = 1,
Sort = 1
});
_twoFactorProviders.Add(TwoFactorProviderType.YubiKey, new TwoFactorProvider
{
Type = TwoFactorProviderType.YubiKey,
Priority = 3,
Sort = 2,
Premium = true
});
_twoFactorProviders.Add(TwoFactorProviderType.Duo, new TwoFactorProvider
{
Type = TwoFactorProviderType.Duo,
Name = "Duo",
Priority = 2,
Sort = 3,
Premium = true
});
_twoFactorProviders.Add(TwoFactorProviderType.OrganizationDuo, new TwoFactorProvider
{
Type = TwoFactorProviderType.OrganizationDuo,
Name = "Duo (Organization)",
Priority = 10,
Sort = 4
});
_twoFactorProviders.Add(TwoFactorProviderType.U2f, new TwoFactorProvider
{
Type = TwoFactorProviderType.U2f,
Priority = 4,
Sort = 5,
Premium = true
});
_twoFactorProviders.Add(TwoFactorProviderType.Email, new TwoFactorProvider
{
Type = TwoFactorProviderType.Email,
Priority = 0,
Sort = 6,
});
}
public string Email { get; set; }
public string MasterPasswordHash { get; set; }
public Dictionary<TwoFactorProviderType, Dictionary<string, object>> TwoFactorProviders { get; set; }
public TwoFactorProviderType? SelectedTwoFactorProviderType { get; set; }
public void Init()
{
_twoFactorProviders[TwoFactorProviderType.Email].Name = _i18nService.T("EmailTitle");
_twoFactorProviders[TwoFactorProviderType.Email].Description = _i18nService.T("EmailDesc");
_twoFactorProviders[TwoFactorProviderType.Authenticator].Name = _i18nService.T("AuthenticatorAppTitle");
_twoFactorProviders[TwoFactorProviderType.Authenticator].Description =
_i18nService.T("AuthenticatorAppDesc");
_twoFactorProviders[TwoFactorProviderType.Duo].Description = _i18nService.T("DuoDesc");
_twoFactorProviders[TwoFactorProviderType.OrganizationDuo].Name =
string.Format("Duo ({0})", _i18nService.T("Organization"));
_twoFactorProviders[TwoFactorProviderType.OrganizationDuo].Description =
_i18nService.T("DuoOrganizationDesc");
_twoFactorProviders[TwoFactorProviderType.U2f].Name = _i18nService.T("U2fTitle");
_twoFactorProviders[TwoFactorProviderType.U2f].Description = _i18nService.T("U2fDesc");
_twoFactorProviders[TwoFactorProviderType.YubiKey].Name = _i18nService.T("YubiKeyTitle");
_twoFactorProviders[TwoFactorProviderType.YubiKey].Description = _i18nService.T("YubiKeyDesc");
}
public async Task<AuthResult> LogInAsync(string email, string masterPassword)
{
SelectedTwoFactorProviderType = null;
var key = await MakePreloginKeyAsync(masterPassword, email);
var hashedPassword = await _cryptoService.HashPasswordAsync(masterPassword, key);
return await LogInHelperAsync(email, hashedPassword, key);
}
public Task<AuthResult> LogInTwoFactorAsync(TwoFactorProviderType twoFactorProvider, string twoFactorToken,
bool? remember = null)
{
return LogInHelperAsync(Email, MasterPasswordHash, _key, twoFactorProvider, twoFactorToken, remember);
}
public async Task<AuthResult> LogInCompleteAsync(string email, string masterPassword,
TwoFactorProviderType twoFactorProvider, string twoFactorToken, bool? remember = null)
{
SelectedTwoFactorProviderType = null;
var key = await MakePreloginKeyAsync(masterPassword, email);
var hashedPassword = await _cryptoService.HashPasswordAsync(masterPassword, key);
return await LogInHelperAsync(email, hashedPassword, key, twoFactorProvider, twoFactorToken, remember);
}
public void LogOut(Action callback)
{
callback.Invoke();
_messagingService.Send("loggedOut");
}
public List<TwoFactorProvider> GetSupportedTwoFactorProviders()
{
var providers = new List<TwoFactorProvider>();
if(TwoFactorProviders == null)
{
return providers;
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.OrganizationDuo) &&
_platformUtilsService.SupportsDuo())
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.OrganizationDuo]);
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.Authenticator))
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.Authenticator]);
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.YubiKey))
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.YubiKey]);
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.Duo) && _platformUtilsService.SupportsDuo())
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.Duo]);
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.U2f) && _platformUtilsService.SupportsU2f())
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.U2f]);
}
if(TwoFactorProviders.ContainsKey(TwoFactorProviderType.Email))
{
providers.Add(_twoFactorProviders[TwoFactorProviderType.Email]);
}
return providers;
}
public TwoFactorProviderType? GetDefaultTwoFactorProvider(bool u2fSupported)
{
if(TwoFactorProviders == null)
{
return null;
}
if(SelectedTwoFactorProviderType != null &&
TwoFactorProviders.ContainsKey(SelectedTwoFactorProviderType.Value))
{
return SelectedTwoFactorProviderType.Value;
}
TwoFactorProviderType? providerType = null;
var providerPriority = -1;
foreach(var providerKvp in TwoFactorProviders)
{
if(_twoFactorProviders.ContainsKey(providerKvp.Key))
{
var provider = _twoFactorProviders[providerKvp.Key];
if(provider.Priority > providerPriority)
{
if(providerKvp.Key == TwoFactorProviderType.U2f && !u2fSupported)
{
continue;
}
providerType = providerKvp.Key;
providerPriority = provider.Priority;
}
}
}
return providerType;
}
// Helpers
private async Task<SymmetricCryptoKey> MakePreloginKeyAsync(string masterPassword, string email)
{
email = email.Trim().ToLower();
_kdf = null;
_kdfIterations = null;
try
{
var preloginResponse = await _apiService.PostPreloginAsync(new PreloginRequest { Email = email });
if(preloginResponse != null)
{
_kdf = preloginResponse.Kdf;
_kdfIterations = preloginResponse.KdfIterations;
}
}
catch(ApiException e)
{
if(e.Error == null || e.Error.StatusCode != System.Net.HttpStatusCode.NotFound)
{
throw e;
}
}
return await _cryptoService.MakeKeyAsync(masterPassword, email, _kdf, _kdfIterations);
}
private async Task<AuthResult> LogInHelperAsync(string email, string hashedPassword, SymmetricCryptoKey key,
TwoFactorProviderType? twoFactorProvider = null, string twoFactorToken = null, bool? remember = null)
{
var storedTwoFactorToken = await _tokenService.GetTwoFactorTokenAsync(email);
var appId = await _appIdService.GetAppIdAsync();
var deviceRequest = new DeviceRequest(appId, _platformUtilsService);
var request = new TokenRequest
{
Email = email,
MasterPasswordHash = hashedPassword,
Device = deviceRequest,
Remember = false
};
if(twoFactorToken != null && twoFactorProvider != null)
{
request.Provider = twoFactorProvider;
request.Token = twoFactorToken;
request.Remember = remember.GetValueOrDefault();
}
else if(storedTwoFactorToken != null)
{
request.Provider = TwoFactorProviderType.Remember;
request.Token = storedTwoFactorToken;
}
var response = await _apiService.PostIdentityTokenAsync(request);
ClearState();
var result = new AuthResult
{
TwoFactor = response.Item2 != null
};
if(result.TwoFactor)
{
// Two factor required.
var twoFactorResponse = response.Item2;
Email = email;
MasterPasswordHash = hashedPassword;
_key = _setCryptoKeys ? key : null;
TwoFactorProviders = twoFactorResponse.TwoFactorProviders2;
result.TwoFactorProviders = twoFactorResponse.TwoFactorProviders2;
return result;
}
var tokenResponse = response.Item1;
if(tokenResponse.TwoFactorToken != null)
{
await _tokenService.SetTwoFactorTokenAsync(tokenResponse.TwoFactorToken, email);
}
await _tokenService.SetTokensAsync(tokenResponse.AccessToken, tokenResponse.RefreshToken);
await _userService.SetInformationAsync(_tokenService.GetUserId(), _tokenService.GetEmail(),
_kdf.Value, _kdfIterations.Value);
if(_setCryptoKeys)
{
await _cryptoService.SetKeyAsync(key);
await _cryptoService.SetKeyHashAsync(hashedPassword);
await _cryptoService.SetEncKeyAsync(tokenResponse.Key);
// User doesn't have a key pair yet (old account), let's generate one for them.
if(tokenResponse.PrivateKey == null)
{
try
{
var keyPair = await _cryptoService.MakeKeyPairAsync();
await _apiService.PostAccountKeysAsync(new KeysRequest
{
PublicKey = keyPair.Item1,
EncryptedPrivateKey = keyPair.Item2.EncryptedString
});
tokenResponse.PrivateKey = keyPair.Item2.EncryptedString;
}
catch { }
}
await _cryptoService.SetEncPrivateKeyAsync(tokenResponse.PrivateKey);
}
_messagingService.Send("loggedIn");
return result;
}
private void ClearState()
{
Email = null;
MasterPasswordHash = null;
TwoFactorProviders = null;
SelectedTwoFactorProviderType = null;
}
}
}