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import * as crypto from 'crypto'
import * as Promise from 'bluebird'
import { join } from 'path'
import {
SIGNATURE_ALGORITHM,
SIGNATURE_ENCODING,
PRIVATE_CERT_NAME,
CONFIG,
BCRYPT_SALT_SIZE,
PUBLIC_CERT_NAME
} from '../initializers'
import {
readFilePromise,
bcryptComparePromise,
bcryptGenSaltPromise,
bcryptHashPromise,
accessPromise,
opensslExecPromise
} from './core-utils'
import { logger } from './logger'
function checkSignature (publicKey: string, data: string, hexSignature: string) {
const verify = crypto.createVerify(SIGNATURE_ALGORITHM)
let dataString
if (typeof data === 'string') {
dataString = data
} else {
try {
dataString = JSON.stringify(data)
} catch (err) {
logger.error('Cannot check signature.', { error: err })
return false
}
}
verify.update(dataString, 'utf8')
const isValid = verify.verify(publicKey, hexSignature, SIGNATURE_ENCODING)
return isValid
}
function sign (data: string|Object) {
const sign = crypto.createSign(SIGNATURE_ALGORITHM)
let dataString: string
if (typeof data === 'string') {
dataString = data
} else {
try {
dataString = JSON.stringify(data)
} catch (err) {
logger.error('Cannot sign data.', { error: err })
return Promise.resolve('')
}
}
sign.update(dataString, 'utf8')
return getMyPrivateCert().then(myKey => {
return sign.sign(myKey, SIGNATURE_ENCODING)
})
}
function comparePassword (plainPassword: string, hashPassword: string) {
return bcryptComparePromise(plainPassword, hashPassword)
}
function createCertsIfNotExist () {
return certsExist().then(exist => {
if (exist === true) {
return undefined
}
return createCerts()
})
}
function cryptPassword (password: string) {
return bcryptGenSaltPromise(BCRYPT_SALT_SIZE).then(salt => bcryptHashPromise(password, salt))
}
function getMyPrivateCert () {
const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
return readFilePromise(certPath, 'utf8')
}
function getMyPublicCert () {
const certPath = join(CONFIG.STORAGE.CERT_DIR, PUBLIC_CERT_NAME)
return readFilePromise(certPath, 'utf8')
}
// ---------------------------------------------------------------------------
export {
checkSignature,
comparePassword,
createCertsIfNotExist,
cryptPassword,
getMyPrivateCert,
getMyPublicCert,
sign
}
// ---------------------------------------------------------------------------
function certsExist () {
const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
// If there is an error the certificates do not exist
return accessPromise(certPath)
.then(() => true)
.catch(() => false)
}
function createCerts () {
return certsExist().then(exist => {
if (exist === true) {
const errorMessage = 'Certs already exist.'
logger.warning(errorMessage)
throw new Error(errorMessage)
}
logger.info('Generating a RSA key...')
const privateCertPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
const genRsaOptions = {
'out': privateCertPath,
'2048': false
}
return opensslExecPromise('genrsa', genRsaOptions)
.then(() => {
logger.info('RSA key generated.')
logger.info('Managing public key...')
const publicCertPath = join(CONFIG.STORAGE.CERT_DIR, 'peertube.pub')
const rsaOptions = {
'in': privateCertPath,
'pubout': true,
'out': publicCertPath
}
return opensslExecPromise('rsa', rsaOptions)
.then(() => logger.info('Public key managed.'))
.catch(err => {
logger.error('Cannot create public key on this pod.')
throw err
})
})
.catch(err => {
logger.error('Cannot create private key on this pod.')
throw err
})
})
}
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