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package main | |
import ( | |
"context" | |
"fmt" | |
"net" | |
"strings" | |
core "github.com/envoyproxy/go-control-plane/envoy/api/v2/core" | |
auth "github.com/envoyproxy/go-control-plane/envoy/service/auth/v2" | |
envoy_type "github.com/envoyproxy/go-control-plane/envoy/type" | |
"github.com/gogo/googleapis/google/rpc" | |
status "google.golang.org/genproto/googleapis/rpc/status" | |
"google.golang.org/grpc" | |
) | |
type authorizationServer struct{} | |
func (a *authorizationServer) Check(ctx context.Context, req *auth.CheckRequest) (*auth.CheckResponse, error) { | |
headers := req.GetAttributes().GetRequest().GetHttp().GetHeaders() | |
authHeader := headers["authorization"] | |
fmt.Printf("authHeader: %v", authHeader) | |
fmt.Println("\n==============") | |
var splitToken []string | |
if authHeader != "" { | |
splitToken = strings.Split(authHeader, "Bearer ") | |
} | |
if len(splitToken) == 2 { | |
token := splitToken[1] | |
if len(token) == 3 { | |
return &auth.CheckResponse{ | |
Status: &status.Status{ | |
Code: int32(rpc.OK), | |
}, | |
HttpResponse: &auth.CheckResponse_OkResponse{ | |
OkResponse: &auth.OkHttpResponse{ | |
Headers: []*core.HeaderValueOption{ | |
{ | |
Header: &core.HeaderValue{ | |
Key: "my-credential-header", | |
Value: "permission6,permission9", | |
}, | |
}, | |
}, | |
}, | |
}, | |
}, nil | |
} | |
} | |
return &auth.CheckResponse{ | |
Status: &status.Status{ | |
Code: int32(rpc.UNAUTHENTICATED), | |
}, | |
HttpResponse: &auth.CheckResponse_DeniedResponse{ | |
DeniedResponse: &auth.DeniedHttpResponse{ | |
Status: &envoy_type.HttpStatus{Code: 401}, | |
Body: "Authorization header must be formatted as Authorization: Bearer TOKEN, where TOKEN is a three-character string", | |
}, | |
}, | |
}, nil | |
} | |
func main() { | |
lis, _ := net.Listen("tcp", ":4040") | |
grpcServer := grpc.NewServer() | |
authServer := &authorizationServer{} | |
auth.RegisterAuthorizationServer(grpcServer, authServer) | |
grpcServer.Serve(lis) | |
} |
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