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Adrien Waksberg 2019-07-01 08:03:41 +02:00
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bin/*

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# CHANGELOG
All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](http://semver.org/).
Which is based on [Keep A Changelog](http://keepachangelog.com/)
## Unreleased
### Added
- Save the wallet in AES-256 encrypted file
- Search entries with a pattern and/or by group
- Copy login, password and OTP code in clipboard
- Manage multiple wallets

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Apache License
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Copyright 2019 Adrien Waksberg
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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# gpm: Go Passwords Manager
[![Version](https://img.shields.io/badge/latest_version-1.0.0_dev-green.svg)](https://git.yaegashi.fr/nishiki/gpm/releases)
[![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://git.yaegashi.fr/nishiki/gpm/src/branch/master/LICENSE)
gpm is passwords manager write in go and use AES-256 to encrypt the wallets
## Features
- generate OTP code
- copy your login, password or otp in clipboard
- manage multiple wallets
## Install
### Build
Download the sources and build
```text
git clone https://git.yaegashi.fr/nishiki/gpm.git
cd gpm
go build -o bin/gpm src/*.go
```
Copy the binary in PATH:
```text
sudo cp bin/gpm /usr/local/bin/gpm
```
## How to use
```text
gpm -help
-add
add a new entry in the wallet
-config string
specify the config file
-copy
enter an copy mode for an entry
-delete
delete an entry
-group string
search the entries in this group
-help
print this help message
-list
list the entries in a wallet
-pattern string
search the entries with this pattern
-update
update an entry
```
## License
```text
Copyright (c) 2019 Adrien Waksberg
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
```

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import(
"bufio"
"fmt"
"os"
"strconv"
"syscall"
"time"
"github.com/atotto/clipboard"
"github.com/olekukonko/tablewriter"
"github.com/pquerna/otp/totp"
"golang.org/x/crypto/ssh/terminal"
)
// Cli contain config and wallet to use
type Cli struct {
Config Config
Wallet Wallet
}
// printEntries show entries with tables
func (c *Cli) printEntries(entries []Entry) {
var otp string
var tables map[string]*tablewriter.Table
tables = make(map[string]*tablewriter.Table)
for i, entry := range entries {
if entry.OTP == "" { otp = "" } else { otp = "X" }
if _, present := tables[entry.Group]; present == false {
tables[entry.Group] = tablewriter.NewWriter(os.Stdout)
tables[entry.Group].SetHeader([]string{"", "Name", "URI", "User", "OTP", "Comment"})
tables[entry.Group].SetBorder(false)
tables[entry.Group].SetColumnColor(
tablewriter.Colors{tablewriter.Normal, tablewriter.FgYellowColor},
tablewriter.Colors{tablewriter.Normal, tablewriter.FgWhiteColor},
tablewriter.Colors{tablewriter.Normal, tablewriter.FgCyanColor},
tablewriter.Colors{tablewriter.Normal, tablewriter.FgGreenColor},
tablewriter.Colors{tablewriter.Normal, tablewriter.FgWhiteColor},
tablewriter.Colors{tablewriter.Normal, tablewriter.FgMagentaColor})
}
tables[entry.Group].Append([]string{ strconv.Itoa(i), entry.Name, entry.URI, entry.User, otp, entry.Comment })
}
for group, table := range tables {
fmt.Printf("\n%s\n\n", group)
table.Render()
fmt.Println("")
}
}
// error print a message and exit)
func (c *Cli) error(msg string) {
fmt.Println(msg)
os.Exit(2)
}
// input from the console
func (c *Cli) input(text string, defaultValue string, show bool) string {
fmt.Print(text)
if show == false {
data, _ := terminal.ReadPassword(int(syscall.Stdin))
text := string(data)
fmt.Printf("\n")
if text == "" {
return defaultValue
}
return text
}
input := bufio.NewScanner(os.Stdin)
input.Scan()
if input.Text() == "" {
fmt.Printf("\n")
return defaultValue
}
return input.Text()
}
// selectEntry with a form
func (c *Cli) selectEntry() Entry {
var index int
entries := c.Wallet.SearchEntry(*PATTERN, *GROUP)
if len(entries) == 0 {
fmt.Println("no entry found")
os.Exit(1)
}
c.printEntries(entries)
if len(entries) == 1 {
return entries[0]
}
for true {
index, err := strconv.Atoi(c.input("Select the entry: ", "", true))
if err == nil && index >= 0 && index + 1 <= len(entries) {
break
}
fmt.Println("your choice is not an integer or is out of range")
}
return entries[index]
}
// loadWallet get and unlock the wallet
func (c *Cli) loadWallet() {
var walletName string
passphrase := c.input("Enter the passphrase to unlock the wallet: ", "", false)
if *WALLET == "" {
walletName = c.Config.WalletDefault
} else {
walletName = *WALLET
}
c.Wallet = Wallet{
Name: walletName,
Path: fmt.Sprintf("%s/%s.gpm", c.Config.WalletDir, c.Config.WalletDefault),
Passphrase: passphrase,
}
err := c.Wallet.Load()
if err != nil {
c.error(fmt.Sprintf("%s", err))
}
}
// List the entry of a wallet
func (c *Cli) listEntry() {
c.loadWallet()
entries := c.Wallet.SearchEntry(*PATTERN, *GROUP)
if len(entries) == 0 {
fmt.Println("no entry found")
os.Exit(1)
} else {
c.printEntries(entries)
}
}
// Delete an entry of a wallet
func (c *Cli) deleteEntry() {
var entry Entry
c.loadWallet()
entry = c.selectEntry()
confirm := c.input("are you sure you want to remove this entry [y/N] ?", "N", true)
if confirm == "y" {
err := c.Wallet.DeleteEntry(entry.ID)
if err != nil {
c.error(fmt.Sprintf("%s", err))
}
err = c.Wallet.Save()
if err != nil {
c.error(fmt.Sprintf("%s", err))
}
fmt.Println("the entry has been deleted")
}
}
// Add a new entry in wallet
func (c *Cli) addEntry() {
c.loadWallet()
entry := Entry{}
entry.GenerateID()
entry.Name = c.input("Enter the name: ", "", true)
entry.Group = c.input("Enter the group: ", "", true)
entry.URI = c.input("Enter the URI: ", "", true)
entry.User = c.input("Enter the username: ", "", true)
entry.Password = c.input("Enter the password: ", "", false)
entry.OTP = c.input("Enter the OTP key: ", "", false)
entry.Comment = c.input("Enter a comment: ", "", true)
err := c.Wallet.AddEntry(entry)
if err != nil {
c.error(fmt.Sprintf("%s", err))
}
c.Wallet.Save()
}
// Update an entry in wallet
func (c *Cli) updateEntry() {
c.loadWallet()
entry := c.selectEntry()
entry.Name = c.input("Enter the new name: ", entry.Name, true)
entry.Group = c.input("Enter the new group: ", entry.Group, true)
entry.URI = c.input("Enter the new URI: ", entry.URI, true)
entry.User = c.input("Enter the new username: ", entry.User, true)
entry.Password = c.input("Enter the new password: ", entry.Password, false)
entry.OTP = c.input("Enter the new OTP key: ", entry.OTP, false)
entry.Comment = c.input("Enter a new comment: ", entry.Comment, true)
err := c.Wallet.UpdateEntry(entry)
if err != nil {
c.error(fmt.Sprintf("%s", err))
}
c.Wallet.Save()
}
// Copy login and password from an entry
func (c *Cli) copyEntry() {
c.loadWallet()
entry := c.selectEntry()
for true {
choice := c.input("select one action: ", "", true)
switch choice {
case "l":
clipboard.WriteAll(entry.User)
case "p":
clipboard.WriteAll(entry.Password)
case "o":
code, _ := totp.GenerateCode(entry.OTP, time.Now())
clipboard.WriteAll(code)
case "q":
os.Exit(0)
default:
fmt.Println("l -> copy login")
fmt.Println("p -> copy password")
fmt.Println("o -> copy OTP code")
fmt.Println("q -> quit")
}
}
}
// Init the cli interface
func (c *Cli) Init() {
c.Config.Load(*CONFIG)
}
// Run the cli interface
func (c *Cli) Run() {
if *LIST {
c.listEntry()
} else if *COPY {
c.copyEntry()
} else if *ADD {
c.addEntry()
} else if *UPDATE {
c.updateEntry()
} else if *DELETE {
c.deleteEntry()
}
}

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"os/user"
"runtime"
)
// Config struct contain the config
type Config struct {
WalletDir string `json:"wallet_dir"`
WalletDefault string `json:"wallet_default"`
}
// Init the configuration
func (c *Config) Init() error {
user, err := user.Current()
if err != nil {
return err
}
if runtime.GOOS == "darwin" {
c.WalletDir = fmt.Sprintf("%s/Library/Preferences/mpw", user.HomeDir)
} else if runtime.GOOS == "windows" {
c.WalletDir = fmt.Sprintf("%s/AppData/Local/mpw", user.HomeDir)
} else {
c.WalletDir = fmt.Sprintf("%s/.config/mpw", user.HomeDir)
}
c.WalletDefault = "default"
return nil
}
// Load the configuration from a file
func (c *Config) Load(path string) error {
_, err := os.Stat(path)
if err != nil {
err = c.Init()
if err != nil {
return err
}
}
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
err = json.Unmarshal(data, &c)
if err != nil {
return err
}
return nil
}
// Save the configuration
func (c *Config) Save(path string) error {
data, err := json.Marshal(&c)
if err != nil {
return err
}
err = ioutil.WriteFile(path, []byte(data), 0644)
if err != nil {
return err
}
return nil
}

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import(
"crypto/aes"
"crypto/sha1"
"crypto/cipher"
"crypto/rand"
"encoding/base64"
"io"
"golang.org/x/crypto/pbkdf2"
)
// Encrypt data with aes256
func Encrypt(data []byte, passphrase string, salt string) (string, error) {
key := pbkdf2.Key([]byte(passphrase), []byte(salt), 4096, 32, sha1.New)
block, err := aes.NewCipher([]byte(key))
if err != nil {
return "", err
}
cipher, err := cipher.NewGCM(block)
if err != nil {
return "", err
}
nonce := make([]byte, cipher.NonceSize())
_, err = io.ReadFull(rand.Reader, nonce)
if err != nil {
return "", err
}
dataEncrypted := cipher.Seal(nonce, nonce, data, nil)
return base64.StdEncoding.EncodeToString(dataEncrypted), nil
}
// Decrypt data
func Decrypt(data string, passphrase string, salt string) ([]byte, error) {
key := pbkdf2.Key([]byte(passphrase), []byte(salt), 4096, 32, sha1.New)
rawData, err := base64.StdEncoding.DecodeString(data)
if err != nil {
return []byte{}, err
}
block, err := aes.NewCipher([]byte(key))
if err != nil {
return []byte{}, err
}
cipher, err := cipher.NewGCM(block)
if err != nil {
return []byte{}, err
}
nonceSize := cipher.NonceSize()
nonce, text := rawData[:nonceSize], rawData[nonceSize:]
plaintext, err := cipher.Open(nil, nonce, text, nil)
if err != nil {
return []byte{}, err
}
return plaintext, nil
}

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import(
"fmt"
"time"
"net/url"
)
// Entry struct have the password informations
type Entry struct {
Name string `yaml:"name"`
ID string `yaml:"id"`
URI string `yaml:"uri"`
User string `yaml:"login"`
Password string `yaml:"password"`
OTP string `yaml:"otp"`
Group string `yaml:"group"`
Comment string `yaml:"comment"`
}
// Verify if the item have'nt error
func (e *Entry) Verify() error {
if e.ID == "" {
return fmt.Errorf("you must generate an ID")
}
if e.Name == "" {
return fmt.Errorf("you must define a name")
}
uri, _ := url.Parse(e.URI)
if e.URI != "" && uri.Host == "" {
return fmt.Errorf("the uri isn't a valid uri")
}
return nil
}
// GenerateID create a new id for the entry
func (e *Entry) GenerateID() {
e.ID = fmt.Sprintf("%d", time.Now().UnixNano())
}

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import(
"flag"
"os"
)
// Options
var(
ADD = flag.Bool("add", false, "add a new entry in the wallet")
UPDATE = flag.Bool("update", false, "update an entry")
DELETE = flag.Bool("delete", false, "delete an entry")
LIST = flag.Bool("list", false, "list the entries in a wallet")
COPY = flag.Bool("copy", false, "enter an copy mode for an entry")
CONFIG = flag.String("config", "", "specify the config file")
GROUP = flag.String("group", "", "search the entries in this group ")
PATTERN = flag.String("pattern", "", "search the entries with this pattern")
WALLET = flag.String("wallet", "", "specify the wallet")
HELP = flag.Bool("help", false, "print this help message")
)
func init() {
flag.Parse()
if *HELP {
flag.PrintDefaults()
os.Exit(1)
}
}
func main() {
c := Cli{}
c.Init()
c.Run()
}

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// Copyright 2019 Adrien Waksberg
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"math/rand"
"os"
"regexp"
"sort"
"strings"
)
// WalletFile contains the data in file
type WalletFile struct {
Salt string
Data string
}
// Wallet struct have wallet informations
type Wallet struct {
Name string
Path string
Salt string
Passphrase string
Entries []Entry
}
// Load all wallet's Entrys from the disk
func (w *Wallet) Load() error {
var walletFile WalletFile
_, err := os.Stat(w.Path)
if err != nil {
return nil
}
content, err := ioutil.ReadFile(w.Path)
if err != nil {
return err
}
err = json.Unmarshal(content, &walletFile)
if err != nil {
return err
}
w.Salt = walletFile.Salt
data, err := Decrypt(string(walletFile.Data), w.Passphrase, w.Salt)
if err != nil {
return err
}
err = json.Unmarshal(data, &w.Entries)
if err != nil {
return err
}
return nil
}
// Save the wallet on the disk
func (w *Wallet) Save() error {
if w.Salt == "" {
salt := make([]byte, 8)
for i := 0; i < 8; i++ {
salt[i] = byte(65 + rand.Intn(25))
}
w.Salt = string(salt)
}
data, err := json.Marshal(&w.Entries)
if err != nil {
return err
}
dataEncrypted, err := Encrypt(data, w.Passphrase, w.Salt)
if err != nil {
return err
}
walletFile := WalletFile{ Salt: w.Salt, Data: dataEncrypted }
content, err := json.Marshal(&walletFile)
if err != nil {
return err
}
err = ioutil.WriteFile(w.Path, content, 0600)
if err != nil {
return err
}
return nil
}
// SearchEntry return an array with the array expected with the pattern
func (w *Wallet) SearchEntry(pattern string, group string) []Entry {
var entries []Entry
r := regexp.MustCompile(pattern)
for _, entry := range w.Entries {
if group != "" && strings.ToLower(entry.Group) != strings.ToLower(group) {
continue
}
if r.Match([]byte(entry.Name)) || r.Match([]byte(entry.Comment)) || r.Match([]byte(entry.URI)) {
entries = append(entries, entry)
}
}
sort.Slice(entries, func(i, j int) bool {
return entries[i].Group < entries[j].Group
})
return entries
}
// SearchEntryByID return an Entry
func (w *Wallet) SearchEntryByID(id string) Entry {
for _, entry := range w.Entries {
if entry.ID == id {
return entry
}
}
return Entry{}
}
// AddEntry append a new entry to wallet
func (w *Wallet) AddEntry(entry Entry) error {
err := entry.Verify()
if err != nil {
return err
}
if w.SearchEntryByID(entry.ID) != (Entry{}) {
return fmt.Errorf("the id already exists in wallet, can't add the entry")
}
w.Entries = append(w.Entries, entry)
return nil
}
// DeleteEntry delete an entry to wallet
func (w *Wallet) DeleteEntry(id string) error {
for index, entry := range w.Entries {
if entry.ID == id {
w.Entries = append(w.Entries[:index], w.Entries[index+1:]...)
return nil
}
}
return fmt.Errorf("entry not found with this id")
}
// UpdateEntry update an Entry to wallet
func (w *Wallet) UpdateEntry(entry Entry) error {
oldEntry := w.SearchEntryByID(entry.ID)
if oldEntry == (Entry{}) {
return fmt.Errorf("entry not found with this id")
}
err := entry.Verify()
if err != nil {
return err
}
for index, i := range w.Entries {
if entry.ID == i.ID {
w.Entries[index] = entry
return nil
}
}
return fmt.Errorf("unknown error during the update")
}