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Envoy实现.NET架构的网关(四)集成IdentityServer4实现OAuth2认证

作者:互联网

什么是OAuth2认证

简单说,OAuth 就是一种授权机制。数据的所有者告诉系统,同意授权第三方应用进入系统,获取这些数据。系统从而产生一个短期的进入令牌(token),用来代替密码,供第三方应用使用。而IdentityServer4就是一个开源的OAuth2认证系统。网关与IdentityServer4集成之后,我们可以避免为内部的每个微服务集成IdentityServer4,可以避免很多重复的工作,而这也是网关的一个重要优势。

新建IdentityServer4服务

1.新增WebApi,并引用Nuget包IdentityServer4

2.新增校验证书,其中的证书文件通过openssl创建

     2.1安装生成证书程序:https://slproweb.com/products/Win32OpenSSL.html(对应操作系统)

     2.2生成证书【找到安装位置】

openssl req -newkey rsa:2048 -nodes -keyout chester.key -x509 -days 365 -out chester.cer

Country Name (2 letter code) [AU]:跳过所有步骤

openssl pkcs12 -export -in chester.cer -inkey chester.key -out chester.pfx

输入密码:123456 确认密码:123456 即可

3.新增配置信息

public class Config
    {
        public static IEnumerable<ApiResource> GetApiResources()
        {
            return new List<ApiResource>
              {
                new ApiResource("api1", "我的第一个API")
                {
                    UserClaims =
                    {
                        JwtClaimTypes.Audience
                    },
                    Scopes = new List<string>
                    {
                        "api"
                    },
                }
              };
        }
        public static IEnumerable<Client> GetClients()
        {
            return new List<Client>
            {
                new Client
                {
                    ClientId="client",//定义客户端ID
                    ClientSecrets=
                    {
                        new Secret("secret".Sha256())//定义客户端秘钥
                    },
                    AllowedGrantTypes = GrantTypes.ResourceOwnerPassword,//授权方式为用户密码模式授权,类型可参考GrantTypes枚举
                    AllowedScopes={ "api" }//允许客户端访问的范围
                }
            };
        }

        public static IEnumerable<ApiScope> ApiScopes =>
            new ApiScope[] { new ApiScope("api") };

        public static IEnumerable<IdentityResource> GetIdentityResources()
        {
            return new IdentityResource[]
            {
                new IdentityResources.OpenId()
            };
        }
    }

4.注入IdentityServer4

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddIdentityServer()//注册服务
              //.AddDeveloperSigningCredential()
              .AddSigningCredential(new X509Certificate2("chester.pfx","123456") )
              .AddInMemoryApiResources(Config.GetApiResources())//配置类定义的授权范围
              .AddInMemoryClients(Config.GetClients())//配置类定义的授权客户端
               .AddInMemoryApiScopes(Config.ApiScopes)
              .AddTestUsers(new List<TestUser> { new TestUser { Username = "Admin", Password = "123456", SubjectId = "001", IsActive = true } });//模拟测试用户,这里偷懒了,用户可以单独管理,最好不要直接在这里New
            services.AddControllers();
        }

5.开启IdentityServer4中间件

app.UseIdentityServer();//添加中间件

6.然后启动IdentityServer4服务

配置Envoy

我们需要用到Envoy的envoy.filters.http.jwt_authn,需要注意的有以下几点

具体配置如下,需要注意的地方已标红

admin:
  address:
    socket_address:
      protocol: TCP
      address: 0.0.0.0
      port_value: 9902
static_resources:
  listeners:
  - name: listener_0
    address:
      socket_address:
        protocol: TCP
        address: 0.0.0.0
        port_value: 10000
    filter_chains:
    - filters:
      - name: envoy.filters.network.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          scheme_header_transformation:
            scheme_to_overwrite: http
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: local_service
              domains: ["*"]
              routes:
              - match:
                  prefix: "/"
                route:
                  host_rewrite_literal: 192.168.43.94
                  cluster: service_envoyproxy_io
          http_filters:
          - name: envoy.filters.http.jwt_authn
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.jwt_authn.v3.JwtAuthentication
              providers:
                jwt_provider:
                  issuer: "http://192.168.43.94:7000"
                  audiences:
                    - "api1"
                  forward: true
                  remote_jwks:
                    http_uri:
                      uri: "http://192.168.43.94:7000/.well-known/openid-configuration/jwks"
                      cluster: jwtserver
                      timeout: 5s
              rules:
                - match:
                    prefix: "/"
                  requires:
                    provider_name: jwt_provider
          - name: envoy.filters.http.router
  clusters:
  - name: jwtserver
    connect_timeout: 0.25s
    type: STRICT_DNS
    lb_policy: ROUND_ROBIN
    load_assignment:
      cluster_name: jwtserver
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 192.168.43.94
                port_value: 7000
  - name: service_envoyproxy_io
    connect_timeout: 30s
    type: strict_dns
    # Comment out the following line to test on v6 networks
    dns_lookup_family: V4_ONLY
    lb_policy: ROUND_ROBIN
    load_assignment:
      cluster_name: service_envoyproxy_io
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 192.168.43.94
                port_value: 5000

启动envoy

docker run --rm -it -p 9902:9902 -p 10000:10000 -v D:/gateway/envoy/config/static/:/etc/envoy/ -v D:/gateway/envoy/logs:/logs envoyproxy/envoy-dev  -c /etc/envoy/envoy-jwt.yaml

验证jwt

我们直接访问http://192.168.43.94:10000/Name,不携带token,可以看到请求被拒绝,返回401

 下面我们调用ids4的/connect/token接口获取token

将获取到的token放到Name接口的Header里,再次调用成功!!!

 

至此,我们通过Envoy+IdentityServer4实现了网关的JWT认证,可以节省内部微服务与IdentityServer4重复的集成工作,实现了统一处理认证逻辑。

标签:网关,OAuth2,http,name,Envoy,envoy,address,new,IdentityServer4
来源: https://www.cnblogs.com/chenyishi/p/15486798.html