831c5585c7
This CL adds an API to SSL stream adapters to set the maximum allowed protocol version and with that implements support for DTLS 1.2. With DTLS 1.2 the default cipher changes in the unittests as follows. BoringSSL TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA -> TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 NSS TLS_RSA_WITH_AES_128_CBC_SHA -> TLS_RSA_WITH_AES_128_GCM_SHA256 BUG=chromium:428343 R=juberti@google.com Review URL: https://webrtc-codereview.appspot.com/50989004 Cr-Commit-Position: refs/heads/master@{#9232}
146 lines
3.6 KiB
C++
146 lines
3.6 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <vector>
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif // HAVE_CONFIG_H
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#include "webrtc/base/sslstreamadapterhelper.h"
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#include "webrtc/base/common.h"
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#include "webrtc/base/logging.h"
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#include "webrtc/base/stream.h"
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namespace rtc {
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SSLStreamAdapterHelper::SSLStreamAdapterHelper(StreamInterface* stream)
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: SSLStreamAdapter(stream),
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state_(SSL_NONE),
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role_(SSL_CLIENT),
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ssl_error_code_(0), // Not meaningful yet
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ssl_mode_(SSL_MODE_TLS),
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ssl_max_version_(SSL_PROTOCOL_TLS_11) {
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}
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SSLStreamAdapterHelper::~SSLStreamAdapterHelper() = default;
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void SSLStreamAdapterHelper::SetIdentity(SSLIdentity* identity) {
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ASSERT(identity_.get() == NULL);
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identity_.reset(identity);
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}
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void SSLStreamAdapterHelper::SetServerRole(SSLRole role) {
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role_ = role;
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}
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int SSLStreamAdapterHelper::StartSSLWithServer(const char* server_name) {
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ASSERT(server_name != NULL && server_name[0] != '\0');
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ssl_server_name_ = server_name;
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return StartSSL();
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}
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int SSLStreamAdapterHelper::StartSSLWithPeer() {
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ASSERT(ssl_server_name_.empty());
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// It is permitted to specify peer_certificate_ only later.
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return StartSSL();
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}
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void SSLStreamAdapterHelper::SetMode(SSLMode mode) {
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ASSERT(state_ == SSL_NONE);
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ssl_mode_ = mode;
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}
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void SSLStreamAdapterHelper::SetMaxProtocolVersion(SSLProtocolVersion version) {
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ssl_max_version_ = version;
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}
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StreamState SSLStreamAdapterHelper::GetState() const {
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switch (state_) {
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case SSL_WAIT:
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case SSL_CONNECTING:
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return SS_OPENING;
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case SSL_CONNECTED:
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return SS_OPEN;
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default:
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return SS_CLOSED;
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};
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// not reached
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}
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bool SSLStreamAdapterHelper::GetPeerCertificate(SSLCertificate** cert) const {
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if (!peer_certificate_)
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return false;
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*cert = peer_certificate_->GetReference();
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return true;
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}
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bool SSLStreamAdapterHelper::SetPeerCertificateDigest(
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const std::string &digest_alg,
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const unsigned char* digest_val,
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size_t digest_len) {
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ASSERT(peer_certificate_.get() == NULL);
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ASSERT(peer_certificate_digest_algorithm_.empty());
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ASSERT(ssl_server_name_.empty());
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size_t expected_len;
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if (!GetDigestLength(digest_alg, &expected_len)) {
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LOG(LS_WARNING) << "Unknown digest algorithm: " << digest_alg;
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return false;
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}
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if (expected_len != digest_len)
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return false;
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peer_certificate_digest_value_.SetData(digest_val, digest_len);
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peer_certificate_digest_algorithm_ = digest_alg;
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return true;
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}
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void SSLStreamAdapterHelper::Error(const char* context, int err, bool signal) {
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LOG(LS_WARNING) << "SSLStreamAdapterHelper::Error("
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<< context << ", " << err << "," << signal << ")";
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state_ = SSL_ERROR;
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ssl_error_code_ = err;
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Cleanup();
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if (signal)
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StreamAdapterInterface::OnEvent(stream(), SE_CLOSE, err);
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}
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void SSLStreamAdapterHelper::Close() {
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Cleanup();
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ASSERT(state_ == SSL_CLOSED || state_ == SSL_ERROR);
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StreamAdapterInterface::Close();
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}
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int SSLStreamAdapterHelper::StartSSL() {
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ASSERT(state_ == SSL_NONE);
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if (StreamAdapterInterface::GetState() != SS_OPEN) {
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state_ = SSL_WAIT;
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return 0;
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}
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state_ = SSL_CONNECTING;
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int err = BeginSSL();
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if (err) {
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Error("BeginSSL", err, false);
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return err;
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}
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return 0;
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}
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} // namespace rtc
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