passwordstore

The MIT License (MIT)

Copyright (c) 2015 Gérôme Fournier

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

// Password store (pass) library (http://www.passwordstore.org/)
// Copyright (c) 2015 Gerome Fournier

package passwordstore

import (
	"errors"
	"fmt"
	"os/exec"
	"strconv"
	"strings"
)

// name of the passwordstore command
const passCommand = "pass"

func head(str string) string {
	return strings.Split(str, "\n")[0]
}

func pass(args ...string) (string, error) {
	out, err := exec.Command(passCommand, args...).CombinedOutput()
	if err != nil {
		return "", errors.New(string(out))
	}
	return string(out), nil
}

// Get a password from the password store
func Get(entry string) (string, error) {
	out, err := pass("show", entry)
	if err != nil {
		return "", err
	}
	return head(string(out)), nil
}

// Insert a new entry in the password store
func Insert(entry, passwd string) error {
	cmd := exec.Command(passCommand, "insert", entry)
	stdin, err := cmd.StdinPipe()
	if err != nil {
		return err
	}

	input := fmt.Sprintf("%s\n%s\n", passwd, passwd)
	_, err = stdin.Write([]byte(input))
	if err != nil {
		return err
	}
	stdin.Close()

	out, err := cmd.CombinedOutput()
	if err != nil {
		return errors.New(string(out))
	}
	return nil
}

// Insert a new entry in the password store,
// generate a random password of <length> characters
func Generate(entry string, length int) (string, error) {
	_, err := pass("generate", entry, strconv.Itoa(length))
	if err != nil {
		return "", err
	}
	return Get(entry)
}

// Delete an entry in the password store
func Delete(entry string) error {
	_, err := pass("rm", entry)
	return err
}

// Rename an entry in the password store
func Move(entry, newentry string) error {
	_, err := pass("mv", entry, newentry)
	return err
}

// Copy an entry in the password store
func Copy(entry, newentry string) error {
	_, err := pass("cp", entry, newentry)
	return err
}

// Get a password from the password store,
// then copy it to the clipboard
func CopyToClipboard(entry string) error {
	_, err := pass("show", "-c", entry)
	return err
}