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flow.go
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package authflow
import (
"bufio"
"fmt"
"io"
"net/http"
"os"
"strings"
"github.com/cli/cli/v2/api"
"github.com/cli/cli/v2/internal/ghinstance"
"github.com/cli/cli/v2/pkg/cmdutil"
"github.com/cli/cli/v2/pkg/iostreams"
"github.com/cli/cli/v2/utils"
"github.com/cli/oauth"
)
var (
// The "GitHub CLI" OAuth app
oauthClientID = "178c6fc778ccc68e1d6a"
// This value is safe to be embedded in version control
oauthClientSecret = "34ddeff2b558a23d38fba8a6de74f086ede1cc0b"
)
type iconfig interface {
Set(string, string, string) error
Write() error
}
func AuthFlowWithConfig(cfg iconfig, IO *iostreams.IOStreams, hostname, notice string, additionalScopes []string, isInteractive bool) (string, error) {
// TODO this probably shouldn't live in this package. It should probably be in a new package that
// depends on both iostreams and config.
token, userLogin, err := authFlow(hostname, IO, notice, additionalScopes, isInteractive)
if err != nil {
return "", err
}
err = cfg.Set(hostname, "user", userLogin)
if err != nil {
return "", err
}
err = cfg.Set(hostname, "oauth_token", token)
if err != nil {
return "", err
}
return token, cfg.Write()
}
func authFlow(oauthHost string, IO *iostreams.IOStreams, notice string, additionalScopes []string, isInteractive bool) (string, string, error) {
w := IO.ErrOut
cs := IO.ColorScheme()
httpClient := http.DefaultClient
debugEnabled, debugValue := utils.IsDebugEnabled()
if debugEnabled {
logTraffic := strings.Contains(debugValue, "api")
httpClient.Transport = api.VerboseLog(IO.ErrOut, logTraffic, IO.ColorEnabled())(httpClient.Transport)
}
minimumScopes := []string{"repo", "read:org", "gist"}
scopes := append(minimumScopes, additionalScopes...)
callbackURI := "http://127.0.0.1/callback"
if ghinstance.IsEnterprise(oauthHost) {
// the OAuth app on Enterprise hosts is still registered with a legacy callback URL
// see https://github.com/cli/cli/pull/222, https://github.com/cli/cli/pull/650
callbackURI = "http://localhost/"
}
flow := &oauth.Flow{
Host: oauth.GitHubHost(ghinstance.HostPrefix(oauthHost)),
ClientID: oauthClientID,
ClientSecret: oauthClientSecret,
CallbackURI: callbackURI,
Scopes: scopes,
DisplayCode: func(code, verificationURL string) error {
fmt.Fprintf(w, "%s First copy your one-time code: %s\n", cs.Yellow("!"), cs.Bold(code))
return nil
},
BrowseURL: func(url string) error {
if !isInteractive {
fmt.Fprintf(w, "%s to continue in your web browser: %s\n", cs.Bold("Open this URL"), url)
return nil
}
fmt.Fprintf(w, "%s to open %s in your browser... ", cs.Bold("Press Enter"), oauthHost)
_ = waitForEnter(IO.In)
// FIXME: read the browser from cmd Factory rather than recreating it
browser := cmdutil.NewBrowser(os.Getenv("BROWSER"), IO.Out, IO.ErrOut)
if err := browser.Browse(url); err != nil {
fmt.Fprintf(w, "%s Failed opening a web browser at %s\n", cs.Red("!"), url)
fmt.Fprintf(w, " %s\n", err)
fmt.Fprint(w, " Please try entering the URL in your browser manually\n")
}
return nil
},
WriteSuccessHTML: func(w io.Writer) {
fmt.Fprint(w, oauthSuccessPage)
},
HTTPClient: httpClient,
Stdin: IO.In,
Stdout: w,
}
fmt.Fprintln(w, notice)
token, err := flow.DetectFlow()
if err != nil {
return "", "", err
}
userLogin, err := getViewer(oauthHost, token.Token)
if err != nil {
return "", "", err
}
return token.Token, userLogin, nil
}
func getViewer(hostname, token string) (string, error) {
http := api.NewClient(api.AddHeader("Authorization", fmt.Sprintf("token %s", token)))
return api.CurrentLoginName(http, hostname)
}
func waitForEnter(r io.Reader) error {
scanner := bufio.NewScanner(r)
scanner.Scan()
return scanner.Err()
}