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trust-cert.ts
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trust-cert.ts
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import { copyFileSync, accessSync, existsSync, readdirSync, lstat, readFileSync } from 'fs'
import { join, basename, extname } from 'path'
import { promisify } from 'util'
import which from 'async-which'
import { Certificate } from '@fidm/x509'
import { exec as sudoExec } from 'exec-root'
import { exec } from 'child_process'
const nonSudoExec = promisify(exec)
const lstatAsync = promisify(lstat)
export const isDirectory = async (source: any) => {
try {
const stats = await lstatAsync(source)
return stats.isDirectory()
} catch (e) {
return false
}
}
const isFile = async (source: any) => {
try {
const stats = await lstatAsync(source)
return stats.isFile()
} catch (e) {
return false
}
}
const getCertCommonName = async (certPath: string) => {
// Check cert exists
accessSync(certPath)
// Read file
const cert = Certificate.fromPEM(readFileSync(certPath))
return cert.issuer.commonName
}
export function generateTrust(platform: string = process.platform) {
if (platform === 'darwin') {
return new MacOsTrust()
} else if (platform === 'win32') {
return new WindowsTrust()
} else if (platform === 'linux') {
return new LinuxTrust()
} else if (platform === 'nss') {
return new NssTrust()
} else {
throw new Error('Only MacOs, Linux and Windows supported')
}
}
export class Trust {
name: string = ''
handleInstallResult(stderr: string, adding: boolean) {
if (stderr) {
throw {
message: `Could not ${adding ? 'add cert to' : 'remove cert from'} ${this.name} store`,
err: stderr
}
} else {
console.log(`Certificate successfully ${adding ? 'added to' : 'removed from'} ${this.name}!`)
return true
}
}
}
export class MacOsTrust extends Trust {
name: string = 'MacOs'
async installFromFile(certPath: string) {
// Check cert exists
accessSync(certPath)
const { stderr } = await sudoExec(
`security add-trusted-cert -d -k /Library/Keychains/System.keychain "${certPath}"`
)
this.handleInstallResult(stderr, true)
}
async uninstall(certPath: string) {
const { stderr } = await sudoExec(
`security delete-certificate -c "${await getCertCommonName(certPath)}"`
)
this.handleInstallResult(stderr, false)
}
async exists(certPath: string): Promise<boolean> {
try {
await nonSudoExec(
`security find-certificate -c ${await getCertCommonName(
certPath
)} "/Library/Keychains/System.keychain"`
)
return true
} catch (e) {
return false
}
}
}
export class WindowsTrust extends Trust {
name: string = 'Windows'
async installFromFile(certPath: string) {
// Check cert exists
accessSync(certPath)
// Copy over to .cer
const newCertPath = this.convertPathToCer(certPath)
// Copy cert to trust path
copyFileSync(certPath, newCertPath)
const { stderr } = await sudoExec(`certutil -addstore "Root" "${newCertPath}"`)
this.handleInstallResult(stderr, true)
}
async uninstall(certPath: string) {
const { stdout, stderr } = await nonSudoExec(`certutil.exe -dump "${certPath}" | find "Serial"`)
if (stdout) {
const [, , serialNumber] = stdout.split(' ')
const { stderr } = await sudoExec(`certutil -delstore "Root" "${serialNumber.trim()}"`)
this.handleInstallResult(stderr, false)
} else {
this.handleInstallResult(stderr, false)
}
}
async exists(certPath: string): Promise<boolean> {
try {
const { stdout, stderr } = await nonSudoExec(`certutil.exe -verify "${certPath}"`)
// ?
if (stdout) {
return !/UNTRUSTED root/.test(stdout)
// Does not exist
} else if (stderr) {
return false
// Exists
} else {
return true
}
} catch (e) {
return false
}
}
convertPathToCer(oldCertPath: string) {
return oldCertPath.substr(0, oldCertPath.lastIndexOf('.')) + '.cer'
}
}
export class LinuxTrust extends Trust {
name: string = 'Linux'
// SystemTrustFilename is the format used to name the root certificates.
systemTrustFilename: string = ''
// systemTrustCommands is the command used to update the system truststore.
systemTrustCommands: string[] = []
constructor() {
super()
if (existsSync('/etc/pki/ca-trust/source/anchors/')) {
this.systemTrustFilename = '/etc/pki/ca-trust/source/anchors/%s.pem'
this.systemTrustCommands = ['update-ca-trust', 'extract']
} else if (existsSync('/usr/local/share/ca-certificates/')) {
this.systemTrustFilename = '/usr/local/share/ca-certificates/%s.crt'
this.systemTrustCommands = ['update-ca-certificates']
} else if (existsSync('/etc/ca-certificates/trust-source/anchors/')) {
this.systemTrustFilename = '/etc/ca-certificates/trust-source/anchors/%s.crt'
this.systemTrustCommands = ['trust', 'extract-compat']
}
if (this.systemTrustCommands) {
const resolved = which(this.systemTrustCommands[0])
if (!resolved) {
this.systemTrustCommands = []
}
}
}
async installFromFile(certPath: string) {
// Check cert exists and copy cert to trust path
existsSync(certPath)
copyFileSync(certPath, this.getNewCertPath(certPath))
// Update trust store
const { stderr } = await sudoExec(this.systemTrustCommands.join(' '))
this.handleInstallResult(stderr, true)
}
async uninstall(certPath: string) {
const { stderr } = await sudoExec(`rm -f ${this.getNewCertPath(certPath)}`)
this.handleInstallResult(stderr, false)
}
async exists(certPath: string): Promise<boolean> {
return isFile(this.getNewCertPath(certPath))
}
getNewCertPath(certPath: string): string {
const certFileName = basename(certPath, extname(certPath))
return this.systemTrustFilename.replace('%s', certFileName)
}
}
export class NssTrust extends Trust {
name: string = 'Nss'
nssProfileDir: string = this.getNssProfileDir()
certutilPath: string = this.getCertutilPath()
async installFromFile(certPath: string) {
for (const db of await this.getFirefoxDatabases()) {
const { stderr } = await sudoExec(
`${this.certutilPath} -A -d "${db}" -t C,, -n "${await getCertCommonName(
certPath
)}" -i "${certPath}"`
)
this.handleInstallResult(stderr, true)
}
}
async uninstall(certPath: string) {
for (const db of await this.getFirefoxDatabases()) {
const { stderr } = await sudoExec(
`${this.certutilPath} -D -d "${db}" -n "${await getCertCommonName(certPath)}"`
)
this.handleInstallResult(stderr, false)
}
}
async exists(certPath: string): Promise<boolean> {
const firefoxDbs = await this.getFirefoxDatabases()
let allExist = firefoxDbs.length > 0
for (const db of firefoxDbs) {
try {
await nonSudoExec(
`${this.certutilPath} -V -d "${db}" -n "${await getCertCommonName(certPath)}" -u L`
)
} catch (e) {
allExist = false
}
}
return allExist
}
async getFirefoxDatabases() {
// Get all user profiles
const profiles = readdirSync(this.nssProfileDir).map(profile =>
join(this.nssProfileDir, profile)
)
let profileDirs = []
for (const profile of profiles) {
if (await isDirectory(profile)) {
profileDirs.push(profile)
}
}
// If any directories
if (profileDirs.length) {
let dbLinks = []
for (const profile of profileDirs) {
if (await isFile(join(profile, 'cert9.db'))) {
dbLinks.push(`sql:${profile}`)
} else if (await isFile(join(profile, 'cert8.db'))) {
dbLinks.push(`dbm:${profile}`)
}
}
return dbLinks
} else {
console.log('No profiles with cert8 or cert9 dbs found in firefox directory.')
return []
}
}
getNssProfileDir(): string {
if (process.platform === 'win32') {
return process.env['USERPROFILE'] + '\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles'
} else if (process.platform === 'darwin') {
return process.env['HOME'] + '/Library/Application Support/Firefox/Profiles/'
} else if (process.platform === 'linux') {
return process.env['HOME'] + '/.mozilla/firefox/'
} else {
return ''
}
}
getCertutilPath(): string {
if (process.platform === 'win32') {
if (process.arch === 'x64') {
return join(__dirname, '..', 'nss', 'win64', 'certutil.exe')
// ia32
} else {
return join(__dirname, '..', 'nss', 'win32', 'certutil.exe')
}
} else if (process.platform === 'darwin') {
return join(__dirname, '..', 'nss', 'mac', 'certutil')
} else if (process.platform === 'linux') {
if (process.arch === 'x64') {
return join(__dirname, '..', 'nss', 'linux64', 'certutil')
} else {
return join(__dirname, '..', 'nss', 'linux32', 'certutil')
}
} else {
throw new Error('NSS only supported on MacOs, Linux and Windows')
}
}
}