blob: 680adcf3066d97c8d99d9e153a1c810c4022c13c [file] [log] [blame]
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// part of "common_patch.dart";
class SecureSocket {
factory SecureSocket._(RawSecureSocket rawSocket) =>
new _SecureSocket(rawSocket);
class _SecureFilter {
factory _SecureFilter._() => new _SecureFilterImpl._();
class X509Certificate {
factory X509Certificate._() => new _X509CertificateImpl._();
class _SecureSocket extends _Socket implements SecureSocket {
_RawSecureSocket? get _raw => super._raw as _RawSecureSocket?;
_SecureSocket(RawSecureSocket raw) : super(raw);
void renegotiate(
{bool useSessionCache: true,
bool requestClientCertificate: false,
bool requireClientCertificate: false}) {}
X509Certificate? get peerCertificate {
if (_raw == null) {
throw new StateError("peerCertificate called on destroyed SecureSocket");
return _raw!.peerCertificate;
String? get selectedProtocol {
if (_raw == null) {
throw new StateError("selectedProtocol called on destroyed SecureSocket");
return _raw!.selectedProtocol;
* _SecureFilterImpl wraps a filter that encrypts and decrypts data travelling
* over an encrypted socket. The filter also handles the handshaking
* and certificate verification.
* The filter exposes its input and output buffers as Dart objects that
* are backed by an external C array of bytes, so that both Dart code and
* native code can access the same data.
class _SecureFilterImpl extends NativeFieldWrapperClass1
implements _SecureFilter {
// Performance is improved if a full buffer of plaintext fits
// in the encrypted buffer, when encrypted.
// SIZE and ENCRYPTED_SIZE are referenced from C++.
static final int SIZE = 8 * 1024;
static final int ENCRYPTED_SIZE = 10 * 1024;
_SecureFilterImpl._() {
buffers = <_ExternalBuffer>[
for (int i = 0; i < _RawSecureSocket.bufferCount; ++i)
new _ExternalBuffer(
_RawSecureSocket._isBufferEncrypted(i) ? ENCRYPTED_SIZE : SIZE),
@pragma("vm:external-name", "SecureSocket_Connect")
external void connect(
String hostName,
SecurityContext context,
bool isServer,
bool requestClientCertificate,
bool requireClientCertificate,
Uint8List protocols);
void destroy() {
buffers = null;
@pragma("vm:external-name", "SecureSocket_Destroy")
external void _destroy();
@pragma("vm:external-name", "SecureSocket_Handshake")
external int _handshake(SendPort replyPort);
@pragma("vm:external-name", "SecureSocket_MarkAsTrusted")
external void _markAsTrusted(int certificatePtr, bool isTrusted);
@pragma("vm:external-name", "SecureSocket_NewX509CertificateWrapper")
external static X509Certificate _newX509CertificateWrapper(
int certificatePtr);
Future<bool> handshake() {
Completer<bool> evaluatorCompleter = Completer<bool>();
ReceivePort rpEvaluateResponse = ReceivePort();
rpEvaluateResponse.listen((data) {
List list = data as List;
// incoming messages (bool isTrusted, int certificatePtr) is
// sent by TrustEvaluator native port after system evaluates
// the certificate chain
if (list.length != 2) {
throw Exception("Invalid number of arguments in evaluate response");
bool isTrusted = list[0] as bool;
int certificatePtr = list[1] as int;
if (!isTrusted) {
if (badCertificateCallback != null) {
try {
isTrusted = badCertificateCallback!(
} catch (e, st) {
evaluatorCompleter.completeError(e, st);
_markAsTrusted(certificatePtr, isTrusted);
const int kSslErrorWantCertificateVerify = 16; // ssl.h:558
int handshakeResult;
try {
handshakeResult = _handshake(rpEvaluateResponse.sendPort);
} catch (e, st) {
if (handshakeResult == kSslErrorWantCertificateVerify) {
return evaluatorCompleter.future;
} else {
// Response is ready, no need for evaluate response receive port
return Future<bool>.value(false);
void rehandshake() => throw new UnimplementedError();
int processBuffer(int bufferIndex) => throw new UnimplementedError();
@pragma("vm:external-name", "SecureSocket_GetSelectedProtocol")
external String? selectedProtocol();
@pragma("vm:external-name", "SecureSocket_Init")
external void init();
@pragma("vm:external-name", "SecureSocket_PeerCertificate")
external X509Certificate? get peerCertificate;
@pragma("vm:external-name", "SecureSocket_RegisterBadCertificateCallback")
external void _registerBadCertificateCallback(Function callback);
Function? badCertificateCallback;
void registerBadCertificateCallback(Function callback) {
badCertificateCallback = callback;
@pragma("vm:external-name", "SecureSocket_RegisterHandshakeCompleteCallback")
external void registerHandshakeCompleteCallback(
Function handshakeCompleteHandler);
@pragma("vm:external-name", "SecureSocket_RegisterKeyLogPort")
external void registerKeyLogPort(SendPort port);
// This is a security issue, as it exposes a raw pointer to Dart code.
@pragma("vm:external-name", "SecureSocket_FilterPointer")
external int _pointer();
@pragma("vm:entry-point", "get")
List<_ExternalBuffer>? buffers;
class SecurityContext {
factory SecurityContext({bool withTrustedRoots: false}) {
return new _SecurityContext(withTrustedRoots);
static SecurityContext get defaultContext {
return _SecurityContext.defaultContext;
static bool get alpnSupported => true;
class _SecurityContext extends NativeFieldWrapperClass1
implements SecurityContext {
_SecurityContext(bool withTrustedRoots) {
if (withTrustedRoots) {
@pragma("vm:external-name", "SecurityContext_Allocate")
external void _createNativeContext();
static final SecurityContext defaultContext = new _SecurityContext(true);
void usePrivateKey(String file, {String? password}) {
List<int> bytes = (new File(file)).readAsBytesSync();
usePrivateKeyBytes(bytes, password: password);
@pragma("vm:external-name", "SecurityContext_UsePrivateKeyBytes")
external void usePrivateKeyBytes(List<int> keyBytes, {String? password});
void setTrustedCertificates(String file, {String? password}) {
List<int> bytes = (new File(file)).readAsBytesSync();
setTrustedCertificatesBytes(bytes, password: password);
@pragma("vm:external-name", "SecurityContext_SetTrustedCertificatesBytes")
external void setTrustedCertificatesBytes(List<int> certBytes,
{String? password});
void useCertificateChain(String file, {String? password}) {
List<int> bytes = (new File(file)).readAsBytesSync();
useCertificateChainBytes(bytes, password: password);
@pragma("vm:external-name", "SecurityContext_UseCertificateChainBytes")
external void useCertificateChainBytes(List<int> chainBytes,
{String? password});
void setClientAuthorities(String file, {String? password}) {
List<int> bytes = (new File(file)).readAsBytesSync();
setClientAuthoritiesBytes(bytes, password: password);
@pragma("vm:external-name", "SecurityContext_SetClientAuthoritiesBytes")
external void setClientAuthoritiesBytes(List<int> authCertBytes,
{String? password});
void setAlpnProtocols(List<String> protocols, bool isServer) {
Uint8List encodedProtocols =
_setAlpnProtocols(encodedProtocols, isServer);
@pragma("vm:external-name", "SecurityContext_SetAlpnProtocols")
external void _setAlpnProtocols(Uint8List protocols, bool isServer);
@pragma("vm:external-name", "SecurityContext_TrustBuiltinRoots")
external void _trustBuiltinRoots();
* _X509CertificateImpl wraps an X509 certificate object held by the BoringSSL
* library. It exposes the fields of the certificate object.
class _X509CertificateImpl extends NativeFieldWrapperClass1
implements X509Certificate {
// The native field must be set manually on a new object, in native code.
// This is done by WrappedX509Certificate in
@pragma("vm:external-name", "X509_Der")
external Uint8List get _der;
late final Uint8List der = _der;
@pragma("vm:external-name", "X509_Pem")
external String get _pem;
late final String pem = _pem;
@pragma("vm:external-name", "X509_Sha1")
external Uint8List get _sha1;
late final Uint8List sha1 = _sha1;
@pragma("vm:external-name", "X509_Subject")
external String get subject;
@pragma("vm:external-name", "X509_Issuer")
external String get issuer;
DateTime get startValidity {
return new DateTime.fromMillisecondsSinceEpoch(_startValidity(),
isUtc: true);
DateTime get endValidity {
return new DateTime.fromMillisecondsSinceEpoch(_endValidity(), isUtc: true);
@pragma("vm:external-name", "X509_StartValidity")
external int _startValidity();
@pragma("vm:external-name", "X509_EndValidity")
external int _endValidity();