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/*
* libjingle
* Copyright 2013 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_APP_WEBRTC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
#define TALK_APP_WEBRTC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
#include "talk/app/webrtc/dtlsidentitystore.h"
#include "talk/app/webrtc/peerconnectioninterface.h"
#include "talk/session/media/mediasession.h"
#include "webrtc/p2p/base/transportdescriptionfactory.h"
#include "webrtc/base/messagehandler.h"
#include "webrtc/base/rtccertificate.h"
namespace cricket {
class ChannelManager;
class TransportDescriptionFactory;
} // namespace cricket
namespace webrtc {
class CreateSessionDescriptionObserver;
class MediaConstraintsInterface;
class SessionDescriptionInterface;
class WebRtcSession;
// DTLS identity request callback class.
class WebRtcIdentityRequestObserver : public DtlsIdentityRequestObserver,
public sigslot::has_slots<> {
public:
// DtlsIdentityRequestObserver overrides.
void OnFailure(int error) override;
void OnSuccess(const std::string& der_cert,
const std::string& der_private_key) override;
void OnSuccess(rtc::scoped_ptr<rtc::SSLIdentity> identity) override;
sigslot::signal1<int> SignalRequestFailed;
sigslot::signal1<const rtc::scoped_refptr<rtc::RTCCertificate>&>
SignalCertificateReady;
};
struct CreateSessionDescriptionRequest {
enum Type {
kOffer,
kAnswer,
};
CreateSessionDescriptionRequest(
Type type,
CreateSessionDescriptionObserver* observer,
const cricket::MediaSessionOptions& options)
: type(type),
observer(observer),
options(options) {}
Type type;
rtc::scoped_refptr<CreateSessionDescriptionObserver> observer;
cricket::MediaSessionOptions options;
};
// This class is used to create offer/answer session description with regards to
// the async DTLS identity generation for WebRtcSession.
// It queues the create offer/answer request until the DTLS identity
// request has completed, i.e. when OnIdentityRequestFailed or OnIdentityReady
// is called.
class WebRtcSessionDescriptionFactory : public rtc::MessageHandler,
public sigslot::has_slots<> {
public:
// Construct with DTLS disabled.
WebRtcSessionDescriptionFactory(rtc::Thread* signaling_thread,
cricket::ChannelManager* channel_manager,
WebRtcSession* session,
const std::string& session_id);
// Construct with DTLS enabled using the specified |dtls_identity_store| to
// generate a certificate.
WebRtcSessionDescriptionFactory(
rtc::Thread* signaling_thread,
cricket::ChannelManager* channel_manager,
rtc::scoped_ptr<DtlsIdentityStoreInterface> dtls_identity_store,
WebRtcSession* session,
const std::string& session_id);
// Construct with DTLS enabled using the specified (already generated)
// |certificate|.
WebRtcSessionDescriptionFactory(
rtc::Thread* signaling_thread,
cricket::ChannelManager* channel_manager,
const rtc::scoped_refptr<rtc::RTCCertificate>& certificate,
WebRtcSession* session,
const std::string& session_id);
virtual ~WebRtcSessionDescriptionFactory();
static void CopyCandidatesFromSessionDescription(
const SessionDescriptionInterface* source_desc,
SessionDescriptionInterface* dest_desc);
void CreateOffer(
CreateSessionDescriptionObserver* observer,
const PeerConnectionInterface::RTCOfferAnswerOptions& options,
const cricket::MediaSessionOptions& session_options);
void CreateAnswer(CreateSessionDescriptionObserver* observer,
const MediaConstraintsInterface* constraints,
const cricket::MediaSessionOptions& session_options);
void SetSdesPolicy(cricket::SecurePolicy secure_policy);
cricket::SecurePolicy SdesPolicy() const;
sigslot::signal1<const rtc::scoped_refptr<rtc::RTCCertificate>&>
SignalCertificateReady;
// For testing.
bool waiting_for_certificate_for_testing() const {
return certificate_request_state_ == CERTIFICATE_WAITING;
}
private:
enum CertificateRequestState {
CERTIFICATE_NOT_NEEDED,
CERTIFICATE_WAITING,
CERTIFICATE_SUCCEEDED,
CERTIFICATE_FAILED,
};
WebRtcSessionDescriptionFactory(
rtc::Thread* signaling_thread,
cricket::ChannelManager* channel_manager,
rtc::scoped_ptr<DtlsIdentityStoreInterface> dtls_identity_store,
const rtc::scoped_refptr<WebRtcIdentityRequestObserver>&
identity_request_observer,
WebRtcSession* session,
const std::string& session_id,
bool dtls_enabled);
// MessageHandler implementation.
virtual void OnMessage(rtc::Message* msg);
void InternalCreateOffer(CreateSessionDescriptionRequest request);
void InternalCreateAnswer(CreateSessionDescriptionRequest request);
// Posts failure notifications for all pending session description requests.
void FailPendingRequests(const std::string& reason);
void PostCreateSessionDescriptionFailed(
CreateSessionDescriptionObserver* observer,
const std::string& error);
void PostCreateSessionDescriptionSucceeded(
CreateSessionDescriptionObserver* observer,
SessionDescriptionInterface* description);
void OnIdentityRequestFailed(int error);
void SetCertificate(
const rtc::scoped_refptr<rtc::RTCCertificate>& certificate);
std::queue<CreateSessionDescriptionRequest>
create_session_description_requests_;
rtc::Thread* const signaling_thread_;
cricket::TransportDescriptionFactory transport_desc_factory_;
cricket::MediaSessionDescriptionFactory session_desc_factory_;
uint64_t session_version_;
const rtc::scoped_ptr<DtlsIdentityStoreInterface> dtls_identity_store_;
const rtc::scoped_refptr<WebRtcIdentityRequestObserver>
identity_request_observer_;
// TODO(jiayl): remove the dependency on session once bug 2264 is fixed.
WebRtcSession* const session_;
const std::string session_id_;
CertificateRequestState certificate_request_state_;
RTC_DISALLOW_COPY_AND_ASSIGN(WebRtcSessionDescriptionFactory);
};
} // namespace webrtc
#endif // TALK_APP_WEBRTC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
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