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token.go
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token.go
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package main
import (
"context"
"encoding/json"
"fmt"
"os"
"os/signal"
"strings"
"syscall"
"time"
"github.com/spf13/cobra"
"github.com/zitadel/oidc/v3/pkg/client"
"github.com/zitadel/oidc/v3/pkg/client/rp"
"github.com/zitadel/oidc/v3/pkg/oidc"
)
const TOKEN_CONF string = "token.json"
const REFRESH_TOKEN_CONF string = "token_fresh.json"
var tokenCmd = &cobra.Command{
Use: "token",
Short: "Generate or refresh an OIDC token with the device authorization flow.",
Run: func(cmd *cobra.Command, args []string) {
ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGINT)
defer stop()
var (
err error
token oidc.AccessTokenResponse
)
if !fileExists(TOKEN_CONF) || forceRecreate {
token, err = tokenGen(ctx)
if err != nil {
fmt.Printf("error generating the token: %v\n", err)
os.Exit(-1)
}
} else {
token, err = tokenRefresh(ctx)
if err != nil {
fmt.Printf("error refreshing the token: %v\n", err)
os.Exit(-1)
}
}
prettyToken, err := json.MarshalIndent(token, "", " ")
if err != nil {
fmt.Printf("error encoding the token: %v\n", err)
os.Exit(-1)
}
fmt.Printf("%s\n", prettyToken)
if err := writeFile(func() string {
if !fileExists(TOKEN_CONF) || forceRecreate {
return TOKEN_CONF
}
return REFRESH_TOKEN_CONF
}(), append(prettyToken, "\n"...)); err != nil {
fmt.Printf("error saving the token to %s: %v\n", TOKEN_CONF, err)
}
if !fileExists(TOKEN_CONF) || forceRecreate {
removeFile(REFRESH_TOKEN_CONF)
}
os.Exit(0)
},
}
func tokenGen(ctx context.Context) (oidc.AccessTokenResponse, error) {
cliConfRaw, err := readFile(CLIENT_CONF)
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error reading client conf: %v", err)
}
var client Client
if err := json.Unmarshal(cliConfRaw, &client); err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error parsing client conf: %v", err)
}
provider, err := rp.NewRelyingPartyOIDC(ctx, issuer, client.ClientId,
client.ClientSecret, "", strings.Split(scopes, ","))
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error creating provider: %v", err)
}
resp, err := rp.DeviceAuthorization(ctx, strings.Split(scopes, ","), provider, nil)
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error triggering the device auth flow: %v", err)
}
fmt.Printf("Please browse to %s and enter code %s\n", resp.VerificationURI, resp.UserCode)
var intervalDelay int
if resp.Interval == 0 {
intervalDelay = DEFAULT_POLLING_INTERVAL
} else {
intervalDelay = resp.Interval
}
fmt.Printf("Beginning polling every %d seconds\n", intervalDelay)
token, err := rp.DeviceAccessToken(ctx, resp.DeviceCode, time.Duration(intervalDelay)*time.Second, provider)
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error polling: %v", err)
}
return *token, nil
}
func tokenRefresh(ctx context.Context) (oidc.AccessTokenResponse, error) {
cliConfRaw, err := readFile(CLIENT_CONF)
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error reading client conf: %v", err)
}
var clientDescr Client
if err := json.Unmarshal(cliConfRaw, &clientDescr); err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error parsing client conf: %v", err)
}
tokenRaw, err := readFile(TOKEN_CONF)
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error reading client conf: %v", err)
}
var confToken oidc.AccessTokenResponse
if err := json.Unmarshal(tokenRaw, &confToken); err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error parsing saved token: %v", err)
}
provider, err := rp.NewRelyingPartyOIDC(ctx, issuer, clientDescr.ClientId,
clientDescr.ClientSecret, "", strings.Split(scopes, ","))
if err != nil {
return oidc.AccessTokenResponse{}, fmt.Errorf("error creating provider: %v", err)
}
// TODO: Figure out these generics...
// newTokenG, err := rp.RefreshTokens[oidc.IDClaims](ctx, provider, confToken.RefreshToken, "", "")
// if err != nil {
// return oidc.AccessTokenResponse{}, fmt.Errorf("error on the refresh request: %v", err)
// }
request := rp.RefreshTokenRequest{
RefreshToken: confToken.RefreshToken,
Scopes: provider.OAuthConfig().Scopes,
ClientID: provider.OAuthConfig().ClientID,
ClientSecret: provider.OAuthConfig().ClientSecret,
ClientAssertion: "",
ClientAssertionType: "",
GrantType: oidc.GrantTypeRefreshToken,
}
newTokenG, err := client.CallTokenEndpoint(ctx, request, tokenEndpointCaller{RelyingParty: provider})
if err != nil {
return oidc.AccessTokenResponse{}, err
}
confToken.AccessToken = newTokenG.AccessToken
confToken.TokenType = newTokenG.TokenType
confToken.RefreshToken = newTokenG.RefreshToken
confToken.ExpiresIn = uint64(time.Until(newTokenG.Expiry).Seconds())
return confToken, nil
}