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const {
ArrayIsArray,
ArrayPrototypeFilter,
ArrayPrototypeForEach,
ArrayPrototypeJoin,
StringPrototypeSplit,
StringPrototypeStartsWith,
} = primordials;
const {
codes: {
ERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTED,
ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE,
},
} = require('internal/errors');
const {
kEmptyObject,
} = require('internal/util');
const {
isArrayBufferView,
} = require('internal/util/types');
const {
validateInt32,
validateObject,
validateString,
} = require('internal/validators');
const {
toBuf,
} = require('internal/crypto/util');
const {
crypto: {
TLS1_2_VERSION,
TLS1_3_VERSION,
},
} = internalBinding('constants');
function getDefaultEcdhCurve() {
// We do it this way because DEFAULT_ECDH_CURVE can be
// changed by users, so we need to grab the current
// value, but we want the evaluation to be lazy.
return require('tls').DEFAULT_ECDH_CURVE || 'auto';
}
function getDefaultCiphers() {
// We do it this way because DEFAULT_CIPHERS can be
// changed by users, so we need to grab the current
// value, but we want the evaluation to be lazy.
return require('tls').DEFAULT_CIPHERS;
}
function addCACerts(context, certs, name) {
ArrayPrototypeForEach(certs, (cert) => {
validateKeyOrCertOption(name, cert);
context.addCACert(cert);
});
}
function setCerts(context, certs, name) {
ArrayPrototypeForEach(certs, (cert) => {
validateKeyOrCertOption(name, cert);
context.setCert(cert);
});
}
function validateKeyOrCertOption(name, value) {
if (typeof value !== 'string' && !isArrayBufferView(value)) {
throw new ERR_INVALID_ARG_TYPE(
name,
[
'string',
'Buffer',
'TypedArray',
'DataView',
],
value
);
}
}
function setKey(context, key, passphrase, name) {
validateKeyOrCertOption(`${name}.key`, key);
if (passphrase !== undefined && passphrase !== null)
validateString(passphrase, `${name}.passphrase`);
context.setKey(key, passphrase);
}
function processCiphers(ciphers, name) {
ciphers = StringPrototypeSplit(ciphers || getDefaultCiphers(), ':');
const cipherList =
ArrayPrototypeJoin(
ArrayPrototypeFilter(
ciphers,
(cipher) => {
return cipher.length > 0 &&
!StringPrototypeStartsWith(cipher, 'TLS_');
}), ':');
const cipherSuites =
ArrayPrototypeJoin(
ArrayPrototypeFilter(
ciphers,
(cipher) => {
return cipher.length > 0 &&
StringPrototypeStartsWith(cipher, 'TLS_');
}), ':');
// Specifying empty cipher suites for both TLS1.2 and TLS1.3 is invalid, its
// not possible to handshake with no suites.
if (cipherSuites === '' && cipherList === '')
throw new ERR_INVALID_ARG_VALUE(name, ciphers);
return { cipherList, cipherSuites };
}
function configSecureContext(context, options = kEmptyObject, name = 'options') {
validateObject(options, name);
const {
ca,
cert,
ciphers = getDefaultCiphers(),
clientCertEngine,
crl,
dhparam,
ecdhCurve = getDefaultEcdhCurve(),
key,
passphrase,
pfx,
privateKeyIdentifier,
privateKeyEngine,
sessionIdContext,
sessionTimeout,
sigalgs,
ticketKeys,
} = options;
// Add CA before the cert to be able to load cert's issuer in C++ code.
// NOTE(@jasnell): ca, cert, and key are permitted to be falsy, so do not
// change the checks to !== undefined checks.
if (ca) {
addCACerts(context, ArrayIsArray(ca) ? ca : [ca], `${name}.ca`);
} else {
context.addRootCerts();
}
if (cert) {
setCerts(context, ArrayIsArray(cert) ? cert : [cert], `${name}.cert`);
}
// Set the key after the cert.
// `ssl_set_pkey` returns `0` when the key does not match the cert, but
// `ssl_set_cert` returns `1` and nullifies the key in the SSL structure
// which leads to the crash later on.
if (key) {
if (ArrayIsArray(key)) {
for (let i = 0; i < key.length; ++i) {
const val = key[i];
const pem = (
val?.pem !== undefined ? val.pem : val);
const pass = (
val?.passphrase !== undefined ? val.passphrase : passphrase);
setKey(context, pem, pass, name);
}
} else {
setKey(context, key, passphrase, name);
}
}
if (sigalgs !== undefined && sigalgs !== null) {
validateString(sigalgs, `${name}.sigalgs`);
if (sigalgs === '')
throw new ERR_INVALID_ARG_VALUE(`${name}.sigalgs`, sigalgs);
context.setSigalgs(sigalgs);
}
if (privateKeyIdentifier !== undefined && privateKeyIdentifier !== null) {
if (privateKeyEngine === undefined || privateKeyEngine === null) {
// Engine is required when privateKeyIdentifier is present
throw new ERR_INVALID_ARG_VALUE(`${name}.privateKeyEngine`,
privateKeyEngine);
}
if (key) {
// Both data key and engine key can't be set at the same time
throw new ERR_INVALID_ARG_VALUE(`${name}.privateKeyIdentifier`,
privateKeyIdentifier);
}
if (typeof privateKeyIdentifier === 'string' &&
typeof privateKeyEngine === 'string') {
if (context.setEngineKey)
context.setEngineKey(privateKeyIdentifier, privateKeyEngine);
else
throw new ERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTED();
} else if (typeof privateKeyIdentifier !== 'string') {
throw new ERR_INVALID_ARG_TYPE(`${name}.privateKeyIdentifier`,
['string', 'null', 'undefined'],
privateKeyIdentifier);
} else {
throw new ERR_INVALID_ARG_TYPE(`${name}.privateKeyEngine`,
['string', 'null', 'undefined'],
privateKeyEngine);
}
}
if (ciphers !== undefined && ciphers !== null)
validateString(ciphers, `${name}.ciphers`);
// Work around an OpenSSL API quirk. cipherList is for TLSv1.2 and below,
// cipherSuites is for TLSv1.3 (and presumably any later versions). TLSv1.3
// cipher suites all have a standard name format beginning with TLS_, so split
// the ciphers and pass them to the appropriate API.
const {
cipherList,
cipherSuites,
} = processCiphers(ciphers, `${name}.ciphers`);
if (cipherSuites !== '')
context.setCipherSuites(cipherSuites);
context.setCiphers(cipherList);
if (cipherList === '' &&
context.getMinProto() < TLS1_3_VERSION &&
context.getMaxProto() > TLS1_2_VERSION) {
context.setMinProto(TLS1_3_VERSION);
}
validateString(ecdhCurve, `${name}.ecdhCurve`);
context.setECDHCurve(ecdhCurve);
if (dhparam !== undefined && dhparam !== null) {
validateKeyOrCertOption(`${name}.dhparam`, dhparam);
const warning = context.setDHParam(dhparam);
if (warning)
process.emitWarning(warning, 'SecurityWarning');
}
if (crl !== undefined && crl !== null) {
if (ArrayIsArray(crl)) {
for (const val of crl) {
validateKeyOrCertOption(`${name}.crl`, val);
context.addCRL(val);
}
} else {
validateKeyOrCertOption(`${name}.crl`, crl);
context.addCRL(crl);
}
}
if (sessionIdContext !== undefined && sessionIdContext !== null) {
validateString(sessionIdContext, `${name}.sessionIdContext`);
context.setSessionIdContext(sessionIdContext);
}
if (pfx !== undefined && pfx !== null) {
if (ArrayIsArray(pfx)) {
ArrayPrototypeForEach(pfx, (val) => {
const raw = val.buf ? val.buf : val;
const pass = val.passphrase || passphrase;
if (pass !== undefined && pass !== null) {
context.loadPKCS12(toBuf(raw), toBuf(pass));
} else {
context.loadPKCS12(toBuf(raw));
}
});
} else if (passphrase) {
context.loadPKCS12(toBuf(pfx), toBuf(passphrase));
} else {
context.loadPKCS12(toBuf(pfx));
}
}
if (typeof clientCertEngine === 'string') {
if (typeof context.setClientCertEngine !== 'function')
throw new ERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTED();
else
context.setClientCertEngine(clientCertEngine);
} else if (clientCertEngine !== undefined && clientCertEngine !== null) {
throw new ERR_INVALID_ARG_TYPE(`${name}.clientCertEngine`,
['string', 'null', 'undefined'],
clientCertEngine);
}
if (ticketKeys !== undefined && ticketKeys !== null) {
if (!isArrayBufferView(ticketKeys)) {
throw new ERR_INVALID_ARG_TYPE(
`${name}.ticketKeys`,
['Buffer', 'TypedArray', 'DataView'],
ticketKeys);
}
if (ticketKeys.byteLength !== 48) {
throw new ERR_INVALID_ARG_VALUE(
`${name}.ticketKeys`,
ticketKeys.byteLength,
'must be exactly 48 bytes');
}
context.setTicketKeys(ticketKeys);
}
if (sessionTimeout !== undefined && sessionTimeout !== null) {
validateInt32(sessionTimeout, `${name}.sessionTimeout`);
context.setSessionTimeout(sessionTimeout);
}
}
module.exports = {
configSecureContext,
};
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