This lib includes a class and set of helper functions for working with WireGuard config files in javascript/typescript.
100% Typescript!
Check out the docs with 💖 from typedoc:
https://guardline-vpn.github.io/wireguard-tools/
npm i wireguard-tools
or
yarn add wireguard-tools
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig({
wgInterface: { address: ['10.10.1.1'] },
filePath
})
await config1.generateKeys()
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig({
wgInterface: {
address: ['10.10.1.1']
},
filePath
})
const { publicKey, preSharedKey, privateKey } = await config1.generateKeys({ preSharedKey: true })
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig({
wgInterface: {
address: ['10.10.1.1']
},
filePath
})
await config1.generateKeys()
await config1.writeToFile()
import path from 'path'
import { WgConfig, getConfigObjectFromFile } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const thatConfigFromFile = await getConfigObjectFromFile({ filePath })
const config1 = new WgConfig({
...thatConfigFromFile,
filePath
})
// OR:
const config2 = new WgConfig({ filePath })
await config2.parseFile()
// OR:
const config3 = new WgConfig()
await config3.parseFile(filePath)
// Public key will not be available because it's not saved in the WireGuard config,
// so you need to generate keys again (it will use the existing private key)
await config1.generateKeys()
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig({
wgInterface: {
address: ['10.10.1.1']
},
filePath
})
await config1.generateKeys()
await config1.writeToFile()
// bring up
await config1.up()
// bring down
await config1.down()
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig()
// Assuming the WireGuard config file is already on disk...
await config1.parseFile(filePath)
await config1.generateKeys()
// bring up
await config1.up()
// create new key pair
await config1.generateKeys({ overwrite: true })
// change the name
config1.wgInterface.name = 'new-name'
// write the file to save
await config1.writeToFile()
// restart for the changes to take effect
await config1.restart()
Note, using this method will start the WireGuard interface if it's down unless { noUp: true } is passed in.
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const config1 = new WgConfig()
// Assuming the WireGuard config file is already on disk...
await config1.parseFile(filePath)
await config1.generateKeys()
// bring up
await config1.up()
// create new key pair
await config1.generateKeys({ overwrite: true })
// change the name
config1.wgInterface.name = 'new-name'
// write the file and restart
await config1.save()
import path from 'path'
import { WgConfig } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const filePath2 = path.join(__dirname, '/configs', '/guardline-client.conf')
const server = new WgConfig({
wgInterface: { address: ['10.10.1.1'] },
filePath
})
const client = new WgConfig({
wgInterface: { address: ['10.10.1.2'] },
filePath: filePath2
})
// gen keys
await Promise.all([
server.generateKeys({ preSharedKey: true }),
client.generateKeys({ preSharedKey: true })
])
// make a peer from server
const serverAsPeer = server.createPeer({
allowedIps: ['10.1.1.1/32'],
preSharedKey: server.preSharedKey
})
// add that as a peer to client
client.addPeer(serverAsPeer)
// make a peer from client and add it to server
server.addPeer(client.createPeer({
allowedIps: ['10.10.1.1/32'],
preSharedKey: client.preSharedKey
}))
import path from 'path'
import { WgConfig, createPeerPairs } from 'wireguard-tools'
// make a load of configs
let configs: WgConfig[] = []
for (let i = 1; i <= 10; i++) {
configs.push(new WgConfig({
wgInterface: {
address: [`10.10.1.${i}`],
name: `Client-${i}`
},
filePath: path.join(__dirname, '/configs', `/guardline-${i}.conf`)
}))
}
// get their key pairs
await Promise.all(configs.map(x => x.generateKeys()))
// add them all as peers of each other
createPeerPairs(configs.map(x => {
return {
config: x,
peerSettings: {
allowedIps: ['10.10.1.1/32']
}
}
}))
// write them all to disk
await Promise.all(configs.map(x => x.writeToFile()))
import path from 'path'
import { WgConfig, createPeerPairs } from 'wireguard-tools'
// make a load of configs
let configs: WgConfig[] = []
for (let i = 1; i <= 10; i++) {
configs.push(new WgConfig({
wgInterface: {
address: [`10.10.1.${i}`],
privateKey: '',
name: `Client-${i}`
},
filePath: path.join(__dirname, '/configs', `/guardline-${i}.conf`)
}))
}
// get their key pairs
await Promise.all(configs.map(x => x.generateKeys()))
// add them all as peers of each other
createPeerPairs(configs.map(x => {
return {
config: x,
peerSettings: ({ thisConfig, peerConfig }) => {
const peerAddress = peerConfig.wgInterface.address
const peerPresharedKey = peerConfig.preSharedKey
return {
allowedIps: peerAddress,
preSharedKey: peerPresharedKey,
name: peerConfig.wgInterface.name,
persistentKeepalive: thisConfig.wgInterface.address.includes('10.10.1.1') ? 25 : undefined
}
}
}
}))
// write them all to disk
await Promise.all(configs.map(x => x.writeToFile()))
import path from 'path'
import {
checkWgIsInstalled,
generateKeyPair,
generateConfigString,
parseConfigString,
getConfigStringFromFile,
getConfigObjectFromFile,
} from ''
// check WireGuard is installed on the system and print version
const version = await checkWgIsInstalled()
console.log(version) // wireguard-tools v1.0.20200827 - https://git.zx2c4.com/wireguard-tools/
// generate a WG key pair (needs wg installed on system)
const { publicKey, privateKey, preSharedKey } = await generateKeyPair({ preSharedKey: true })
console.log({ publicKey, privateKey, preSharedKey })
/**
* {
* publicKey: '257CQncfArO8QLIcc23Hhyq2IvnBszCl8XUU9TA42Q4=',
* privateKey: '6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q=',
* preSharedKey: 'NlqKE2Ja7AAQhDZpevUwi7pjlnU7HZgcPLI0F/gVPfs='
* }
*/
// Generate a string version of the WgConfig suitable for saving to a Wireguard Config file
const configString = generateConfigString({
wgInterface: {
name: 'Client 1',
address: ['10.10.1.1'],
privateKey: '6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q'
},
peers: [
{
allowedIps: ['10.10.1.1/32'],
publicKey: 'FoSq0MiHw9nuHMiJcD2vPCzQScmn1Hu0ctfKfSfhp3s='
}
]
})
console.log(configString)
/**
* [Interface]
* # Name = Client 1
* Address = 10.10.1.1
* PrivateKey = 6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q
*
* [Peer]
* PublicKey = FoSq0MiHw9nuHMiJcD2vPCzQScmn1Hu0ctfKfSfhp3s=
* AllowedIPs = 10.10.1.1/32
*/
// Parse a config object from a WireGuard config file string
const configObj = parseConfigString(configString)
console.log(configObj)
/**
* {
* wgInterface: {
* address: [ '10.10.1.1' ],
* privateKey: '6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q',
* name: 'Client 1'
* },
* peers: [
* {
* allowedIps: [Array],
* publicKey: 'FoSq0MiHw9nuHMiJcD2vPCzQScmn1Hu0ctfKfSfhp3s='
* }
* ]
* }
*/
// Get a raw wireguard config string from a file
const confStringFromFile = getConfigStringFromFile({
filePath: path.join(__dirname, '/configs', '/wg0.conf')
})
console.log(confStringFromFile)
/**
* [Interface]
* # Name = Client 1
* Address = 10.10.1.1
* PrivateKey = 6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q
*
* [Peer]
* PublicKey = FoSq0MiHw9nuHMiJcD2vPCzQScmn1Hu0ctfKfSfhp3s=
* AllowedIPs = 10.10.1.1/32
*/
// Get a parsed WgConfigObject from a wireguard config file
const confObjFromFile = getConfigObjectFromFile({
filePath: path.join(__dirname, '/configs', '/wg0.conf')
})
console.log(confObjFromFile)
/**
* {
* wgInterface: {
* address: [ '10.10.1.1' ],
* privateKey: '6AgToMLuTa3lQMIMwIBVkhwSM0PVLCZD1FpqU5y0l2Q',
* name: 'Client 1'
* },
* peers: [
* {
* allowedIps: [Array],
* publicKey: 'FoSq0MiHw9nuHMiJcD2vPCzQScmn1Hu0ctfKfSfhp3s='
* }
* ]
* }
*/
Here is one extensive example of usage that should give you an idea of what to do:
import path from 'path'
import { WgConfig, getConfigObjectFromFile, createPeerPairs, checkWgIsInstalled } from 'wireguard-tools'
const filePath = path.join(__dirname, '/configs', '/guardline-server.conf')
const test = async () => {
try {
// make a new config
const config1 = new WgConfig({
wgInterface: {
address: ['10.10.1.1']
},
filePath
})
// give the config a name
config1.wgInterface.name = 'Guardline Server'
// update some other properties
config1.wgInterface.postUp = ['echo "Guardline Server Up!"']
config1.wgInterface.listenPort = 5280
// make a keypair for the config and a pre-shared key
const keypair = await config1.generateKeys({ preSharedKey: true })
// these keys will be saved to the config object
console.log(keypair.publicKey === config1.publicKey) // true
console.log(keypair.preSharedKey === config1.preSharedKey) // true
console.log(keypair.privateKey === config1.wgInterface.privateKey) // true
// write the config to disk
await config1.writeToFile()
// read that file into another config object
const thatConfigFromFile = await getConfigObjectFromFile({ filePath })
const config2FilePath = path.join(__dirname, '/configs', '/guardline-server-2.conf')
const config2 = new WgConfig({
...thatConfigFromFile,
filePath: config2FilePath
})
// both configs private key will be the same because config2 has been parsed
// from the file written by config
console.log(config1.wgInterface.privateKey === config2.wgInterface.privateKey)
// however, config2 doesn't have a public key becuase WireGuard doesn't save the
// the public key in the config file.
// To get the public key, you'll need to run generateKeys on config2
// it'll keep it's private key and derive a public key from it
await config2.generateKeys()
// so now the two public keys will be the same
console.log(config1.publicKey === config2.publicKey) // true
// you can generate a new keypair by passing an arg:
config2.generateKeys({ overwrite: true })
// so now their public/private keys are different
console.log(config1.publicKey === config2.publicKey) // false
// you can create a peer object from a WgConfig like this
const config2AsPeer = config2.createPeer({
allowedIps: ['10.10.1.1/32']
})
// you can add a peer to a config like this:
config1.addPeer(config2AsPeer)
// and remove a peer like this
config1.removePeer(config2.publicKey)
// or you make two WgConfigs peers of each other like this:
createPeerPairs([
{
config: config1,
// The peer settings to apply when adding this config as a peer
peerSettings: {
allowedIps: ['10.10.1.1'],
preSharedKey: config1.preSharedKey
}
},
{
config: config2,
peerSettings: {
allowedIps: ['10.10.1.2']
}
}
])
// That will end up with config1 having config2 as a peer
// and config2 having config1 as a peer
console.log(config1.getPeer(config2.publicKey)) // logs the peer
console.log(config2.getPeer(config1.publicKey)) // logs the peer
// Check that the system has wireguard installed and log the version like this
// (will throw an error if not installed)
const wgVersion = await checkWgIsInstalled()
console.log(wgVersion)
// if wireguard is installed, you can bring up your config like this:
// (make sure it's been written to file first!)
await config1.writeToFile()
await config1.up() // Wireguard interface is up
// you can change something about the interface while it's up
config1.wgInterface.dns = ['1.1.1.1']
config1.writeToFile()
// but make sure you restart the interface for your changes to take effect
await config1.restart()
// and finally, when you're done, take down the interface like this
await config1.down()
// Thanks for reading!
} catch (e) {
console.error(e)
}
}
test()
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