Function addAuthFromNetrc

netrc.go:17–67

addAuthFromNetrc adds auth information to the URL from the user's netrc file if it can be found. This will only add the auth info if the URL doesn't already have auth info specified and the the username is blank.

(u *url.URL)

// if the URL doesn't already have auth info specified and the
// the username is blank.
func addAuthFromNetrc(u *url.URL) error {
	// If the URL already has auth information, do nothing
	if u.User != nil && u.User.Username() != "" {
		return nil
	}

	// Get the netrc file path
	path := os.Getenv("NETRC")
	if path == "" {
		filename := ".netrc"
		if runtime.GOOS == "windows" {
			filename = "_netrc"
		}

		var err error
		path, err = homedir.Expand("~/" + filename)
		if err != nil {
			return err
		}
	}

	// If the file is not a file, then do nothing
	if fi, err := os.Stat(path); err != nil {
		// File doesn't exist, do nothing
		if os.IsNotExist(err) {
			return nil
		}

		// Some other error!
		return err
	} else if fi.IsDir() {
		// File is directory, ignore
		return nil
	}

	// Load up the netrc file
	net, err := netrc.ParseFile(path)
	if err != nil {
		return fmt.Errorf("Error parsing netrc file at %q: %s", path, err)
	}

	machine := net.FindMachine(u.Host)
	if machine == nil {
		// Machine not found, no problem
		return nil
	}

	// Set the user info
	u.User = url.UserPassword(machine.Login, machine.Password)
	return nil
}