Sergiusz Bazanski | b13b7ff | 2019-08-29 20:12:24 +0200 | [diff] [blame] | 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "crypto/x509" |
| 6 | "flag" |
| 7 | "fmt" |
| 8 | "os" |
| 9 | "os/user" |
| 10 | "syscall" |
| 11 | |
| 12 | "github.com/golang/glog" |
| 13 | "golang.org/x/crypto/ssh/terminal" |
| 14 | "google.golang.org/grpc" |
| 15 | "google.golang.org/grpc/credentials" |
| 16 | |
Serge Bazanski | 97b5cd7 | 2023-07-28 17:14:50 +0000 | [diff] [blame] | 17 | "code.hackerspace.pl/hscloud/cluster/certs" |
Sergiusz Bazanski | b13b7ff | 2019-08-29 20:12:24 +0200 | [diff] [blame] | 18 | pb "code.hackerspace.pl/hscloud/cluster/prodvider/proto" |
| 19 | ) |
| 20 | |
| 21 | var ( |
| 22 | flagProdvider string |
| 23 | flagUsername string |
| 24 | flagForce bool |
| 25 | ) |
| 26 | |
| 27 | func init() { |
| 28 | flag.Set("logtostderr", "true") |
| 29 | } |
| 30 | |
| 31 | func main() { |
| 32 | user, err := user.Current() |
| 33 | if err == nil { |
| 34 | flagUsername = user.Username |
| 35 | } |
| 36 | |
| 37 | flag.StringVar(&flagProdvider, "prodvider", "prodvider.hswaw.net:443", "Prodvider endpoint") |
| 38 | flag.StringVar(&flagUsername, "username", flagUsername, "Username to authenticate with") |
| 39 | flag.BoolVar(&flagForce, "force", false, "Force retrieving certificates even if they already exist") |
| 40 | flag.Parse() |
| 41 | |
| 42 | if flagUsername == "" { |
| 43 | glog.Exitf("Username could not be detected, please provide with -username flag") |
| 44 | } |
| 45 | |
| 46 | cp := x509.NewCertPool() |
Serge Bazanski | ffdb97b | 2023-04-08 00:13:04 +0200 | [diff] [blame] | 47 | if ok := cp.AppendCertsFromPEM(certs.Data["ca-kube.crt"]); !ok { |
Sergiusz Bazanski | b13b7ff | 2019-08-29 20:12:24 +0200 | [diff] [blame] | 48 | glog.Exitf("Could not load k8s CA") |
| 49 | } |
| 50 | |
| 51 | creds := credentials.NewClientTLSFromCert(cp, "") |
| 52 | conn, err := grpc.Dial(flagProdvider, grpc.WithTransportCredentials(creds)) |
| 53 | if err != nil { |
| 54 | glog.Exitf("Could not dial prodvider: %v", err) |
| 55 | } |
| 56 | |
| 57 | prodvider := pb.NewProdviderClient(conn) |
| 58 | ctx := context.Background() |
| 59 | |
| 60 | if !needKubernetesCreds() && !flagForce { |
| 61 | fmt.Printf("Kubernetes credentials exist. Use `prodaccess -force` to force update.\n") |
| 62 | os.Exit(0) |
| 63 | } |
| 64 | |
| 65 | attempts := 0 |
| 66 | for { |
| 67 | ok := authenticate(ctx, prodvider) |
| 68 | attempts += 1 |
| 69 | if !ok { |
| 70 | if attempts >= 3 { |
| 71 | os.Exit(1) |
| 72 | } |
| 73 | } else { |
| 74 | fmt.Printf("Good evening professor. I see you have driven here in your Ferrari.\n") |
| 75 | os.Exit(0) |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | func authenticate(ctx context.Context, prodvider pb.ProdviderClient) bool { |
| 81 | req := &pb.AuthenticateRequest{ |
| 82 | Username: flagUsername, |
| 83 | Password: password(), |
| 84 | } |
| 85 | |
| 86 | res, err := prodvider.Authenticate(ctx, req) |
| 87 | if err != nil { |
| 88 | glog.Exitf("Prodvider error: %v", err) |
| 89 | } |
| 90 | |
| 91 | switch res.Result { |
| 92 | case pb.AuthenticateResponse_RESULT_AUTHENTICATED: |
| 93 | break |
| 94 | case pb.AuthenticateResponse_RESULT_INVALID_CREDENTIALS: |
| 95 | fmt.Printf("Invalid username or password.\n") |
| 96 | return false |
| 97 | default: |
| 98 | glog.Exitf("Unknown authentication result: %v", res.Result) |
| 99 | } |
| 100 | |
| 101 | useKubernetesKeys(res.KubernetesKeys) |
Serge Bazanski | f3312ef | 2020-08-01 17:15:52 +0200 | [diff] [blame] | 102 | fmt.Printf("-> Kubernetes credentials installed\n") |
| 103 | useHSPKIKeys(res.HspkiKeys) |
| 104 | fmt.Printf("-> HSPKI credentials installed\n") |
Sergiusz Bazanski | b13b7ff | 2019-08-29 20:12:24 +0200 | [diff] [blame] | 105 | |
| 106 | return true |
| 107 | } |
| 108 | |
| 109 | func password() string { |
| 110 | fmt.Printf("Enter SSO/LDAP password for %s@hackerspace.pl: ", flagUsername) |
| 111 | bytePassword, err := terminal.ReadPassword(int(syscall.Stdin)) |
| 112 | if err != nil { |
| 113 | return "" |
| 114 | } |
| 115 | fmt.Printf("\n") |
| 116 | return string(bytePassword) |
| 117 | } |