opaal/cmd/login.go
2024-02-22 10:57:39 -07:00

95 lines
3 KiB
Go

package cmd
import (
"davidallendj/oidc-auth/internal/api"
"davidallendj/oidc-auth/internal/oidc"
"davidallendj/oidc-auth/internal/util"
"encoding/json"
"errors"
"fmt"
"net/http"
"os"
"github.com/spf13/cobra"
)
var (
identitiesUrl = ""
accessTokenUrl = ""
)
var loginCmd = &cobra.Command{
Use: "login",
Short: "Start the login flow",
Run: func(cmd *cobra.Command, args []string) {
if configPath != "" {
config = LoadConfig(configPath)
} else {
config = NewConfig()
}
oidcProvider := oidc.NewOIDCProvider()
oidcProvider.Host = config.OIDCHost
oidcProvider.Port = config.OIDCPort
// check if the client ID is set
if config.ClientId == "" {
fmt.Printf("client ID must be set\n")
os.Exit(1)
}
var authorizationUrl = util.BuildAuthorizationUrl(
oidcProvider.GetAuthorizeUrl(),
config.ClientId,
config.RedirectUri,
config.State,
config.ResponseType,
config.Scope,
)
// print the authorization URL for the user to log in
fmt.Printf("login with identity provider: %s\n", authorizationUrl)
// authorize oauth client and listen for callback from provider
fmt.Printf("waiting for response from OIDC provider...\n")
code, err := api.WaitForAuthorizationCode(config.Host, config.Port)
if errors.Is(err, http.ErrServerClosed) {
fmt.Printf("server closed\n")
} else if err != nil {
fmt.Printf("error starting server: %s\n", err)
os.Exit(1)
}
// use code from response and exchange for bearer token
tokenString, err := api.FetchToken(code, oidcProvider.GetTokenUrl(), config.ClientId, config.ClientSecret, config.State, config.RedirectUri)
if err != nil {
fmt.Printf("%v\n", err)
return
}
var data map[string]any
json.Unmarshal([]byte(tokenString), &data)
idToken := data["id_token"].(string)
// create a new identity with Ory Kratos if identitiesUrl is provided
if config.IdentitiesUrl != "" {
api.CreateIdentity(config.IdentitiesUrl, idToken)
api.FetchIdentities(config.IdentitiesUrl)
}
// use ID token/user info to get access token from Ory Hydra
if config.AccessTokenUrl != "" {
api.FetchAccessToken(config.AccessTokenUrl, config.ClientId, idToken)
}
},
}
func init() {
loginCmd.Flags().StringVar(&config.ClientId, "client.id", config.ClientId, "set the client ID")
loginCmd.Flags().StringVar(&config.ClientSecret, "client.secret", config.ClientSecret, "set the client secret")
loginCmd.Flags().StringSliceVar(&config.RedirectUri, "redirect-uri", config.RedirectUri, "set the redirect URI")
loginCmd.Flags().StringVar(&config.ResponseType, "response-type", config.ResponseType, "set the response-type")
loginCmd.Flags().StringSliceVar(&config.Scope, "scope", config.Scope, "set the scopes")
loginCmd.Flags().StringVar(&config.State, "state", config.State, "set the state")
loginCmd.Flags().StringVar(&config.Host, "host", config.Host, "set the listening host")
loginCmd.Flags().IntVar(&config.Port, "port", config.Port, "set the listening port")
rootCmd.AddCommand(loginCmd)
}