OWIN安全 - OAuth2刷新令牌 - 如何包含刷新令牌的過期

Question

繼this指南後，我有一個功能授權服務器。我的應用收到以下回應：

{ 
    "access_token": "wNl5VT4UuMwMpFOkoMTUscO7XgS96ktzeE_FoAcKpugLD4VrZGZ0HgGvgfgbY1axOPsdxQ5bzB2hA5jKtWNZdq21OvKU4LLnRXXhSHbOWLnbVSAVfkrX1n_Vv_TgWncOheK3WJ7OkELoLUkwYYQCzX712BVmblLkSjsjpvX94VywnUv16z_cnIPsUAHjHlLsEB5cFvyItGQCU2KRq-A3j70l2zBNnu9N9s3dUoidP8eiW6QpDWOnSOXKX9DG0vd6lQnUtgt7mHeP8Det55QvptRTPKABnKxB9_0QvSGa6I8", 
    "token_type": "bearer", 
    "expires_in": 1799, 
    "refresh_token": "a39bca5a33ef4c9fb77c3652f17152db", 
    "as:client_id": "myClient", 
    "userName": "myUser", 
    ".issued": "Wed, 22 Feb 2017 17:05:24 GMT", 
    ".expires": "Wed, 22 Feb 2017 17:35:24 GMT" 
} 

我的問題是不包括刷新令牌的過期。我知道我可以把這看作是一個例外，但如果可能的話，最好避免這種情況。如何在IAuthenticationTokenProvider.CreateAsync(...)方法中創建刷新令牌時包含過期日期/時間，該方法發生在OAuthAuthorizationServerProvider.GrantResourceOwnerCredentials(...)和OAuthAuthorizationServerProvider.TokenEndpoint(...)方法之後。

授權提供

public class SimpleAuthorizationServerProvider : OAuthAuthorizationServerProvider 
{ 
    public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context) 
    { 
     ... 
    } 

    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context) 
    { 
     var refreshTokenLifeTime = context.OwinContext.Get<string>("as:clientRefreshTokenLifeTime"); 
     var allowedOrigin = context.OwinContext.Get<string>("as:clientAllowedOrigin") ?? "*"; 

     context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { allowedOrigin }); 

     using (AuthRepository repo = new AuthRepository()) 
     { 
      IdentityUser user = await repo.FindUser(context.UserName, context.Password); 

      if (user == null) 
      { 
       context.SetError("invalid_grant", "The user name or password is incorrect."); 
       return; 
      } 
     } 

     var identity = new ClaimsIdentity(context.Options.AuthenticationType); 
     identity.AddClaim(new Claim(ClaimTypes.Name, context.UserName)); 
     identity.AddClaim(new Claim("sub", context.UserName)); 
     identity.AddClaim(new Claim("role", "user")); 

     var props = new AuthenticationProperties(new Dictionary<string, string> 
     { 
      { 
       "as:client_id", context.ClientId ?? string.Empty 
      }, 
      { 
       "userName", context.UserName 
      } 
     }); 

     var ticket = new AuthenticationTicket(identity, props); 
     context.Validated(ticket); 
    } 

    public override Task TokenEndpoint(OAuthTokenEndpointContext context) 
    { 
     foreach (KeyValuePair<string, string> property in context.Properties.Dictionary) 
     { 
      context.AdditionalResponseParameters.Add(property.Key, property.Value); 
     } 

     return Task.FromResult<object>(null); 
    } 
} 

刷新令牌提供

public class SimpleRefreshTokenProvider : IAuthenticationTokenProvider 
{ 
    public async Task CreateAsync(AuthenticationTokenCreateContext context) 
    { 
     var clientid = context.Ticket.Properties.Dictionary["as:client_id"]; 

     if (string.IsNullOrEmpty(clientid)) 
     { 
      return; 
     } 

     var refreshTokenId = Guid.NewGuid().ToString("n"); 

     using (AuthRepository repo = new AuthRepository()) 
     { 
      var refreshTokenLifeTime = context.OwinContext.Get<string>("as:clientRefreshTokenLifeTime"); 

      var token = new RefreshToken 
      { 
       Id = Helper.GetHash(refreshTokenId), 
       ClientId = clientid, 
       Subject = context.Ticket.Identity.Name, 
       IssuedUtc = DateTime.UtcNow, 
       ExpiresUtc = DateTime.UtcNow.AddMinutes(Convert.ToDouble(refreshTokenLifeTime)) 
      }; 

      context.Ticket.Properties.IssuedUtc = token.IssuedUtc; 
      context.Ticket.Properties.ExpiresUtc = token.ExpiresUtc; 

      token.ProtectedTicket = context.SerializeTicket(); 

      var result = await repo.AddRefreshToken(token); 

      if (result) 
      { 
       context.SetToken(refreshTokenId); 
      } 
     } 
    } 

    public async Task ReceiveAsync(AuthenticationTokenReceiveContext context) 
    { 
     ... 
    } 
} 

Answer 1

我創建了一個DTO類刷新令牌序列化和到位的refreshTokenId變量返回。

public class RefreshTokenDTO 
{ 
    [JsonProperty("token")] 
    public string Token { get; set; } 

    [JsonProperty("issued")] 
    public DateTime Issued { get; set; } 

    [JsonProperty("expires")] 
    public DateTime Expires { get; set; } 
} 

，改變了SimpleRefreshTokenProvider.CreateAsync方法

public class SimpleRefreshTokenProvider : IAuthenticationTokenProvider 
{ 
    public async Task CreateAsync(AuthenticationTokenCreateContext context) 
    { 
     ... 

     using (AuthRepository repo = new AuthRepository()) 
     { 
      ... 

      if (result) 
      { 
       //context.SetToken(refreshTokenId); 

       var rToken = new RefreshTokenDTO 
       { 
        Token = refreshTokenId, 
        Issued = token.IssuedUtc, 
        Expires = token.ExpiresUtc 
       }; 

       var json = JsonConvert.SerializeObject(rToken); 

       context.SetToken(json); 
      } 
     } 
    } 

新的響應是

{ 
    "access_token": "dRJiWTT03KlapjqENhDeIa-f35rE4eRDn6DL60laVeKysUQkOHE2Zu6ySYYFmq53jN5KQL3A7Aj6obM3oe5iYtHbfeueODcMitzGEBXMph1-791v86VWgdvW4EtvIbhQnLq8Acr6K_Nt5qDQWTCD5DETjr6h0OenbZtDIQak3ycUUPEU5m1Ws3b2qZbw62-DSUzaOZ2TYhvdkRdFg_zWhLIDd9vIWiGXcWxTr415P5a7d1s_K-8vmq5q-I5nEUCmJshmCWIU_4oPKz7sQLHhy79JE9Z00BfdidzFbYaA9yo", 
    "token_type": "bearer", 
    "expires_in": 1799, 
    "refresh_token": "{\"Token\":\"f94f5ba1494644e388f0ec4862a81909\",\"Issued\":\"2017-02-22T17:48:03.771661Z\",\"Expires\":\"2017-03-04T17:48:03.771661Z\"}", 
    "as:client_id": "epAndroid", 
    "as:issued": "", 
    "userName": "pm00115905", 
    ".issued": "Wed, 22 Feb 2017 17:48:02 GMT", 
    ".expires": "Wed, 22 Feb 2017 18:18:02 GMT" 
} 

和在客戶端我創建了一個JsonConverter

public class RefreshTokenJsonConverter : JsonConverter 
{ 
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) 
    { 
     throw new NotImplementedException(); 
    } 

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) 
    { 
     return JsonConvert.DeserializeObject<RefreshToken>(reader.Value.ToString()); 
    } 

    public override bool CanConvert(Type objectType) 
    { 
     return true; 
    } 
}