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Prompt user for auth after service requireing auth added

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Philipp Wolfer 2023-12-09 23:17:43 +01:00
parent 9449a29fb1
commit ab0e50f7aa
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3 changed files with 106 additions and 53 deletions
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internal/cli/auth.go Normal file
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/*
Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
Scotty is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
Scotty. If not, see <https://www.gnu.org/licenses/>.
*/
package cli
import (
"fmt"
"os"
"github.com/cli/browser"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"go.uploadedlobster.com/scotty/internal/auth"
"go.uploadedlobster.com/scotty/internal/backends"
"go.uploadedlobster.com/scotty/internal/config"
"go.uploadedlobster.com/scotty/internal/i18n"
"go.uploadedlobster.com/scotty/internal/models"
"go.uploadedlobster.com/scotty/internal/storage"
"golang.org/x/oauth2"
)
func AuthenticationFlow(service config.ServiceConfig, backend models.OAuth2Authenticator) {
redirectURL, err := backends.BuildRedirectURL(viper.GetViper(), backend.Name())
cobra.CheckErr(err)
// The backend must provide an authentication strategy
strategy := backend.OAuth2Strategy(redirectURL)
// use PKCE to protect against CSRF attacks
// https://www.ietf.org/archive/id/draft-ietf-oauth-security-topics-22.html#name-countermeasures-6
verifier := oauth2.GenerateVerifier()
state := auth.RandomState()
// Redirect user to consent page to ask for permission specified scopes.
authUrl := strategy.AuthCodeURL(verifier, state)
// Start an HTTP server to listen for the response
responseChan := make(chan auth.CodeResponse)
auth.RunOauth2CallbackServer(*redirectURL, authUrl.Param, responseChan)
// Open the URL
fmt.Println(i18n.Tr("Visit the URL for authorization: %v", authUrl.Url))
err = browser.OpenURL(authUrl.Url)
cobra.CheckErr(err)
// Retrieve the code from the authentication callback
code := <-responseChan
if code.State != authUrl.State {
cobra.CompErrorln(i18n.Tr("Error: OAuth state mismatch"))
os.Exit(1)
}
// Exchange the code for the authentication token
tok, err := strategy.ExchangeToken(code, verifier)
cobra.CheckErr(err)
// Store the retrieved token in the database
db, err := storage.New(config.DatabasePath())
cobra.CheckErr(err)
err = db.SetOAuth2Token(service.Name, tok)
cobra.CheckErr(err)
fmt.Println(i18n.Tr("Access token received, you can use %v now.\n", service.Name))
}