我正在尝试了解有关 Asp.Net Core 中 JWT 令牌的所有这些内容。在因大量误解而流血工作后，我陷入了困境。我的任务是制作带有两个控制器（受保护和不受保护）的 WebApi 服务器。我应该从服务器授予令牌并能够获得受保护的资源。当我运行服务器并尝试从邮递员那里获取受保护的资源时，一切似乎都很好。但是当我在我的 Angular 客户端做同样的事情时，从另一个域我有奇怪的事情。我可以获得不受保护的资源，并且由于以下错误而无法获得受保护的资源：
XMLHttpRequest cannot load http://localhost:10450/api/prvalues. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:10377' is therefore not allowed access.
为了清楚起见，我展示了我所有的尝试。我的 project.json 看起来像
"dependencies": {
"AspNet.Security.OpenIdConnect.Server": "1.0.0-beta4",
"EntityFramework.Core": "7.0.0-rc1-final",
"EntityFramework.InMemory": "7.0.0-rc1-final",
"Microsoft.AspNet.Authentication.JwtBearer": "1.0.0-rc1-final",
"Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final",
"Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final",
"Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
"Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
"Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
"Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
"Microsoft.Extensions.Configuration.FileProviderExtensions": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging.Console": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final",
"NWebsec.Middleware": "1.0.0-gamma-39",
"Microsoft.AspNet.Mvc.Cors": "6.0.0-rc1-final",
"Microsoft.AspNet.Cors": "6.0.0-rc1-final"
},
我的 Startup.ConfigureServices()样子
公共无效配置服务（IServiceCollection 服务）{
services.AddCors(options =>
{
options.AddPolicy("AllowAllOrigins",
builder =>
{
builder.AllowAnyOrigin();
builder.AllowAnyHeader();
});
});
services.AddEntityFramework()
.AddInMemoryDatabase()
.AddDbContext<ApplicationDbContext<ApplicationUser, Application, IdentityRole, string>>(options => {
options.UseInMemoryDatabase();
});
services.AddScoped<IAuthStore<ApplicationUser,Application>, AuthStore<ApplicationUser, Application, IdentityRole,
ApplicationDbContext<ApplicationUser, Application, IdentityRole, string>, string>>();
services.AddScoped<AuthManager<ApplicationUser, Application>>();
services.AddIdentity<ApplicationUser, IdentityRole>(options =>
{
options.Password = new PasswordOptions()
{
RequiredLength = 1,
RequireDigit = false,
RequireLowercase = false,
RequireUppercase = false,
RequireNonLetterOrDigit = false
};
}).AddEntityFrameworkStores<ApplicationDbContext<ApplicationUser, Application, IdentityRole, string>>().AddDefaultTokenProviders();
services.AddAuthentication();
// Add framework services.
services.AddCaching();
services.AddMvc();
}
AuthManager 和 AuthStore 是从 OpenIddict 中窃取的。我稍后会展示给他们看。我的 Startup.Configure()样子：
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
app.UseCors("AllowAllOrigins");
app.UseIISPlatformHandler();
app.UseDeveloperExceptionPage();
app.UseStaticFiles();
// Create a new branch where the registered middleware will be executed only for API calls.
app.UseWhen(context => context.Request.Path.StartsWithSegments(new PathString("/api")), branch =>
{
branch.UseJwtBearerAuthentication(options =>
{
options.AutomaticAuthenticate = true;
options.AutomaticChallenge = true;
options.RequireHttpsMetadata = false;
// Thisi is test, if I uncomment this and SetResource in AuthorizationProvider everything works in postman
//options.Audience = "http://localhost:10450/";
// My Angular client
options.Audience = "http://localhost:10377/";
// My Api
options.Authority = "http://localhost:10450/";
});
});
// Note: visit https://docs.nwebsec.com/en/4.2/nwebsec/Configuring-csp.html for more information.
app.UseCsp(options => options.DefaultSources(configuration => configuration.Self())
.ImageSources(configuration => configuration.Self().CustomSources("data:"))
.ScriptSources(configuration => configuration.UnsafeInline())
.StyleSources(configuration => configuration.Self().UnsafeInline()));
app.UseXContentTypeOptions();
app.UseXfo(options => options.Deny());
app.UseXXssProtection(options => options.EnabledWithBlockMode());
app.UseOpenIdConnectServer(options =>
{
options.Provider = new AuthorizationProvider();
// Note: see AuthorizationController.cs for more
// information concerning ApplicationCanDisplayErrors.
options.ApplicationCanDisplayErrors = true;
options.AllowInsecureHttp = true;
options.AuthorizationEndpointPath = PathString.Empty;
options.TokenEndpointPath = "/token";
// Note: by default, tokens are signed using dynamically-generated
// RSA keys but you can also use your own certificate:
// options.SigningCredentials.AddCertificate(certificate);
});
app.UseMvc();
var hasher = new PasswordHasher<Application>();
using (var database = app.ApplicationServices.GetService<ApplicationDbContext<ApplicationUser, Application, IdentityRole, string>>())
{
database.Applications.Add(new Application
{
Id = "myPublicClient",
DisplayName = "My client application",
Type = ApplicationTypes.Public
});
database.Applications.Add(new Application
{
Id = "myConfidentialClient",
DisplayName = "My client application",
Secret = hasher.HashPassword(null, "secret_secret_secret"),
Type = ApplicationTypes.Confidential
});
database.SaveChanges();
CreateUser(app).Wait();
}
}
最后，我的AthorizationProvider.GrantResourceOwnerCredentials()（我使用 AspNet.Security.OpenIdConnect.Server）是：
public override async Task GrantResourceOwnerCredentials(GrantResourceOwnerCredentialsContext context)
{
#region UserChecking
var manager = context.HttpContext.RequestServices.GetRequiredService<AuthManager<ApplicationUser, Application>>();
var user = await manager.FindByNameAsync(context.UserName);
if (user == null)
{
context.Rejected(
error: OpenIdConnectConstants.Errors.InvalidGrant,
description: "Invalid credentials.");
return;
}
// Ensure the user is not already locked out.
if (manager.SupportsUserLockout && await manager.IsLockedOutAsync(user))
{
context.Rejected(
error: OpenIdConnectConstants.Errors.InvalidGrant,
description: "Account locked out.");
return;
}
// Ensure the password is valid.
if (!await manager.CheckPasswordAsync(user, context.Password))
{
context.Rejected(
error: OpenIdConnectConstants.Errors.InvalidGrant,
description: "Invalid credentials.");
if (manager.SupportsUserLockout)
{
await manager.AccessFailedAsync(user);
// Ensure the user is not locked out.
if (await manager.IsLockedOutAsync(user))
{
context.Rejected(
error: OpenIdConnectConstants.Errors.InvalidGrant,
description: "Account locked out.");
}
}
return;
}
if (manager.SupportsUserLockout)
{
await manager.ResetAccessFailedCountAsync(user);
}
if (context.Request.ContainsScope(OpenIdConnectConstants.Scopes.Profile) &&
!context.Request.ContainsScope(OpenIdConnectConstants.Scopes.Email) &&
string.Equals(await manager.GetUserNameAsync(user),
await manager.GetEmailAsync(user),
StringComparison.OrdinalIgnoreCase))
{
context.Rejected(
error: OpenIdConnectConstants.Errors.InvalidRequest,
description: "The 'email' scope is required.");
return;
}
#endregion
var identity = await manager.CreateIdentityAsync(user, context.Request.GetScopes());
var ticket = new AuthenticationTicket(
new ClaimsPrincipal(identity),
new AuthenticationProperties(),
context.Options.AuthenticationScheme);
//ticket.SetResources(context.Request.GetResources());
// When I tested with postman
//ticket.SetResources(new[] { "http://localhost:10450/" });
ticket.SetResources(new[] { "http://localhost:10377" });
ticket.SetScopes(context.Request.GetScopes());
context.Validated(ticket);
}
我已经展示了所有我认为可能导致问题的代码。对不起，如果它很长，但我不知道女巫部分会导致问题。
要访问我的 protecetd 资源（简单地用 装饰[Authorize]），我使用来自 Angular 客户端的此类虚拟代码
$http.defaults.headers.common['Authorization'] = 'Bearer ' + 'token here';
return $http.get('http://localhost:10450/' + 'api/prvalues');
正如我所说，我对此类请求有错误。但是，如果我尝试获取不受保护的资源（[Authorize]从控制器中删除属性），一切正常。