1. 业务场景
IdentityServer4 授权配置Client
中的AllowedScopes
,设置的是具体的 API 站点名字,也就是使用方设置的ApiName
,示例代码:
//授权中心配置new Client { ClientId = client_id_1, AllowedGrantTypes = GrantTypes.ResourceOwnerPassword, AllowOfflineAccess = true, AccesstokenLifetime = 3600 * 6, //6小时SlidingRefreshTokenLifetime = 1296000, //15天ClientSecrets = {new Secret(secret.Sha256()) }, AllowedScopes = {api_name1}, }//API 服务配置app.UseIdentityServerAuthentication(new IdentityServerAuthenticationoptions { Authority = $http://localhost:5000, ApiName = api_name1, RequireHttpsMetadata = false});
上面两个api_name1
配置要一致,问题来了,因为授权中心的scope
配置是整个 API 服务,如果我们存在多个Client
配置,比如一个前台和后台,然后都需要访问api_name1
,就会出现一些问题。
[Authorize()] [Route(api/values)] [HttpGet]public IActionResult Get() {return Ok(); }
Authorize()
的配置,说明api/values
接口需要授权后访问,如果授权中心配置了两个Client
(前台和后台),并且scope
都包含了api_name1
,现在就会出现两种情况:
其实,说明白些,就是该如何让 API 服务指定Client
授权访问?比如:[Authorize(ClientId = 'client_id_1')]
。
2. 解决方案
没有[Authorize(ClientId = 'client_id_1')]
这种解决方式,不过可以使用[Authorize(Roles = 'admin')]
。
授权中心的ResourceOwnerPasswordValidator
代码,修改如下:
public class ResourceOwnerPasswordValidator : IResourceOwnerPasswordValidator {private readonly IUserService _userService;public ResourceOwnerPasswordValidator(IUserService userService) { _userService = userService; }public async Task ValidateAsync(ResourceOwnerPasswordValidationContext context) {var user = await _userService.Login(context.UserName, context.Password);if (user != null) {var claims = new List<Claim>() { new Claim(role, admin) }; //根据 user 对象,设置不同的 rolecontext.Result = new GrantValidationResult(user.UserId.ToString(), OidcConstants.AuthenticationMethods.Password, claims); } } }
授权中心的startup
配置,修改如下
var builder = services.AddIdentityServer(); builder.AddTemporarySigningCredential()//.AddInMemoryIdentityResources(Config.GetIdentityResources()).AddInMemoryApiResources(new List<ApiResource> {new ApiResource(api_name1, api1){ UserClaims = new List<string> {role}}, //增加 role claimnew ApiResource(api_name2, api2){ UserClaims = new List<string> {role}} }) .AddInMemoryClients(Config.GetClients());
API 服务接口,只需要配置如下:
[Authorize()] [Route(api/values)] [HttpGet]public IActionResult Get() {return Ok(); } [Authorize(Roles = admin)] [Route(api/values2)] [HttpGet]public IActionResult Get2() {return Ok(); } [Authorize(Roles = admin,normal)] [Route(api/values3)] [HttpGet]public IActionResult Get3() {return Ok(); }
需要注意的是,api/values
接口虽然没有设置具体的Roles
,但每个Role
都可以访问。