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logout.go
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logout.go
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package logout
import (
"errors"
"fmt"
"net/http"
"github.com/AlecAivazis/survey/v2"
"github.com/MakeNowJust/heredoc"
"github.com/andrewhsu/cli/v2/api"
"github.com/andrewhsu/cli/v2/internal/config"
"github.com/andrewhsu/cli/v2/pkg/cmdutil"
"github.com/andrewhsu/cli/v2/pkg/iostreams"
"github.com/andrewhsu/cli/v2/pkg/prompt"
"github.com/spf13/cobra"
)
type LogoutOptions struct {
HttpClient func() (*http.Client, error)
IO *iostreams.IOStreams
Config func() (config.Config, error)
Hostname string
}
func NewCmdLogout(f *cmdutil.Factory, runF func(*LogoutOptions) error) *cobra.Command {
opts := &LogoutOptions{
HttpClient: f.HttpClient,
IO: f.IOStreams,
Config: f.Config,
}
cmd := &cobra.Command{
Use: "logout",
Args: cobra.ExactArgs(0),
Short: "Log out of a GitHub host",
Long: heredoc.Doc(`Remove authentication for a GitHub host.
This command removes the authentication configuration for a host either specified
interactively or via --hostname.
`),
Example: heredoc.Doc(`
$ gh auth logout
# => select what host to log out of via a prompt
$ gh auth logout --hostname enterprise.internal
# => log out of specified host
`),
RunE: func(cmd *cobra.Command, args []string) error {
if opts.Hostname == "" && !opts.IO.CanPrompt() {
return &cmdutil.FlagError{Err: errors.New("--hostname required when not running interactively")}
}
if runF != nil {
return runF(opts)
}
return logoutRun(opts)
},
}
cmd.Flags().StringVarP(&opts.Hostname, "hostname", "h", "", "The hostname of the GitHub instance to log out of")
return cmd
}
func logoutRun(opts *LogoutOptions) error {
hostname := opts.Hostname
cfg, err := opts.Config()
if err != nil {
return err
}
candidates, err := cfg.Hosts()
if err != nil {
return err
}
if len(candidates) == 0 {
return fmt.Errorf("not logged in to any hosts")
}
if hostname == "" {
if len(candidates) == 1 {
hostname = candidates[0]
} else {
err = prompt.SurveyAskOne(&survey.Select{
Message: "What account do you want to log out of?",
Options: candidates,
}, &hostname)
if err != nil {
return fmt.Errorf("could not prompt: %w", err)
}
}
} else {
var found bool
for _, c := range candidates {
if c == hostname {
found = true
break
}
}
if !found {
return fmt.Errorf("not logged into %s", hostname)
}
}
if err := cfg.CheckWriteable(hostname, "oauth_token"); err != nil {
var roErr *config.ReadOnlyEnvError
if errors.As(err, &roErr) {
fmt.Fprintf(opts.IO.ErrOut, "The value of the %s environment variable is being used for authentication.\n", roErr.Variable)
fmt.Fprint(opts.IO.ErrOut, "To erase credentials stored in GitHub CLI, first clear the value from the environment.\n")
return cmdutil.SilentError
}
return err
}
httpClient, err := opts.HttpClient()
if err != nil {
return err
}
apiClient := api.NewClientFromHTTP(httpClient)
username, err := api.CurrentLoginName(apiClient, hostname)
if err != nil {
// suppressing; the user is trying to delete this token and it might be bad.
// we'll see if the username is in the config and fall back to that.
username, _ = cfg.Get(hostname, "user")
}
usernameStr := ""
if username != "" {
usernameStr = fmt.Sprintf(" account '%s'", username)
}
if opts.IO.CanPrompt() {
var keepGoing bool
err := prompt.SurveyAskOne(&survey.Confirm{
Message: fmt.Sprintf("Are you sure you want to log out of %s%s?", hostname, usernameStr),
Default: true,
}, &keepGoing)
if err != nil {
return fmt.Errorf("could not prompt: %w", err)
}
if !keepGoing {
return nil
}
}
cfg.UnsetHost(hostname)
err = cfg.Write()
if err != nil {
return fmt.Errorf("failed to write config, authentication configuration not updated: %w", err)
}
isTTY := opts.IO.IsStdinTTY() && opts.IO.IsStdoutTTY()
if isTTY {
cs := opts.IO.ColorScheme()
fmt.Fprintf(opts.IO.ErrOut, "%s Logged out of %s%s\n",
cs.SuccessIcon(), cs.Bold(hostname), usernameStr)
}
return nil
}