package tunnel import ( "fmt" "net/url" "os" "path/filepath" "syscall" "github.com/cloudflare/cloudflared/cmd/cloudflared/config" "github.com/cloudflare/cloudflared/cmd/cloudflared/transfer" homedir "github.com/mitchellh/go-homedir" cli "gopkg.in/urfave/cli.v2" ) const baseLoginURL = "https://dash.cloudflare.com/argotunnel" func login(c *cli.Context) error { path, ok, err := checkForExistingCert() if ok { fmt.Fprintf(os.Stdout, "You have an existing certificate at %s which login would overwrite.\nIf this is intentional, please move or delete that file then run this command again.", path) return nil } else if err != nil { return err } loginURL, err := url.Parse(baseLoginURL) if err != nil { // shouldn't happen, URL is hardcoded return err } _, err = transfer.Run(c, loginURL, "cert", path, false) if err != nil { fmt.Fprintf(os.Stderr, "Failed to write the certificate due to the following error:\n%v\n\nYour browser will download the certificate instead. You will have to manually\ncopy it to the following path:\n\n%s", err, path) return err } fmt.Fprintf(os.Stdout, "You have successfully logged in.\nIf you wish to copy your credentials to a server, they have been saved to:\n%s\n", path) return nil } func checkForExistingCert() (string, bool, error) { configPath, err := homedir.Expand(config.DefaultConfigDirs[0]) if err != nil { return "", false, err } ok, err := config.FileExists(configPath) if !ok && err == nil { // create config directory if doesn't already exist err = os.Mkdir(configPath, 0700) } if err != nil { return "", false, err } path := filepath.Join(configPath, defaultCredentialFile) fileInfo, err := os.Stat(path) if err == nil && fileInfo.Size() > 0 { return path, true, nil } if err != nil && err.(*os.PathError).Err != syscall.ENOENT { return path, false, err } return path, false, nil }