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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <vector>
#if HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#include "webrtc/base/sslstreamadapterhelper.h"
#include "webrtc/base/common.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/stream.h"
namespace rtc {
SSLStreamAdapterHelper::SSLStreamAdapterHelper(StreamInterface* stream)
: SSLStreamAdapter(stream),
state_(SSL_NONE),
role_(SSL_CLIENT),
ssl_error_code_(0), // Not meaningful yet
ssl_mode_(SSL_MODE_TLS),
ssl_max_version_(SSL_PROTOCOL_TLS_12) {}
SSLStreamAdapterHelper::~SSLStreamAdapterHelper() = default;
void SSLStreamAdapterHelper::SetIdentity(SSLIdentity* identity) {
ASSERT(identity_.get() == NULL);
identity_.reset(identity);
}
void SSLStreamAdapterHelper::SetServerRole(SSLRole role) {
role_ = role;
}
int SSLStreamAdapterHelper::StartSSLWithServer(const char* server_name) {
ASSERT(server_name != NULL && server_name[0] != '\0');
ssl_server_name_ = server_name;
return StartSSL();
}
int SSLStreamAdapterHelper::StartSSLWithPeer() {
ASSERT(ssl_server_name_.empty());
// It is permitted to specify peer_certificate_ only later.
return StartSSL();
}
void SSLStreamAdapterHelper::SetMode(SSLMode mode) {
ASSERT(state_ == SSL_NONE);
ssl_mode_ = mode;
}
void SSLStreamAdapterHelper::SetMaxProtocolVersion(SSLProtocolVersion version) {
ssl_max_version_ = version;
}
StreamState SSLStreamAdapterHelper::GetState() const {
switch (state_) {
case SSL_WAIT:
case SSL_CONNECTING:
return SS_OPENING;
case SSL_CONNECTED:
return SS_OPEN;
default:
return SS_CLOSED;
};
// not reached
}
bool SSLStreamAdapterHelper::GetPeerCertificate(SSLCertificate** cert) const {
if (!peer_certificate_)
return false;
*cert = peer_certificate_->GetReference();
return true;
}
bool SSLStreamAdapterHelper::SetPeerCertificateDigest(
const std::string &digest_alg,
const unsigned char* digest_val,
size_t digest_len) {
ASSERT(peer_certificate_.get() == NULL);
ASSERT(peer_certificate_digest_algorithm_.empty());
ASSERT(ssl_server_name_.empty());
size_t expected_len;
if (!GetDigestLength(digest_alg, &expected_len)) {
LOG(LS_WARNING) << "Unknown digest algorithm: " << digest_alg;
return false;
}
if (expected_len != digest_len)
return false;
peer_certificate_digest_value_.SetData(digest_val, digest_len);
peer_certificate_digest_algorithm_ = digest_alg;
return true;
}
void SSLStreamAdapterHelper::Error(const char* context, int err, bool signal) {
LOG(LS_WARNING) << "SSLStreamAdapterHelper::Error("
<< context << ", " << err << "," << signal << ")";
state_ = SSL_ERROR;
ssl_error_code_ = err;
Cleanup();
if (signal)
StreamAdapterInterface::OnEvent(stream(), SE_CLOSE, err);
}
void SSLStreamAdapterHelper::Close() {
Cleanup();
ASSERT(state_ == SSL_CLOSED || state_ == SSL_ERROR);
StreamAdapterInterface::Close();
}
int SSLStreamAdapterHelper::StartSSL() {
ASSERT(state_ == SSL_NONE);
if (StreamAdapterInterface::GetState() != SS_OPEN) {
state_ = SSL_WAIT;
return 0;
}
state_ = SSL_CONNECTING;
int err = BeginSSL();
if (err) {
Error("BeginSSL", err, false);
return err;
}
return 0;
}
} // namespace rtc
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