61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package main
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import (
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"context"
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"flag"
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"fmt"
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"log"
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"net"
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"github.com/go-gost/plugin/auth/proto"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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)
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var (
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port = flag.Int("port", 8000, "The server port")
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)
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type server struct {
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proto.UnimplementedAuthenticatorServer
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}
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func (s *server) Authenticate(ctx context.Context, in *proto.AuthenticateRequest) (*proto.AuthenticateReply, error) {
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token := s.getCredentials(ctx)
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if token != "gost" {
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return nil, status.Error(codes.Unauthenticated, codes.Unauthenticated.String())
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}
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reply := &proto.AuthenticateReply{}
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if in.GetUsername() == "gost" && in.GetPassword() == "gost" {
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reply.Ok = true
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reply.Id = "gost"
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}
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log.Printf("auth: %s %s, %s, %v", in.Client, in.GetUsername(), in.GetPassword(), reply.Ok)
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return reply, nil
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}
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func (s *server) getCredentials(ctx context.Context) string {
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md, ok := metadata.FromIncomingContext(ctx)
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if ok && len(md["token"]) > 0 {
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return md["token"][0]
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}
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return ""
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}
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func main() {
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flag.Parse()
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lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
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if err != nil {
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log.Fatalf("failed to listen: %v", err)
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}
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s := grpc.NewServer()
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proto.RegisterAuthenticatorServer(s, &server{})
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log.Printf("server listening at %v", lis.Addr())
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if err := s.Serve(lis); err != nil {
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log.Fatalf("failed to serve: %v", err)
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}
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}
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