1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* 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/peerconnectioninterface.h"
#include "webrtc/p2p/base/transportdescriptionfactory.h"
#include "talk/session/media/mediasession.h"
#include "webrtc/base/messagehandler.h"
namespace cricket {
class ChannelManager;
class TransportDescriptionFactory;
} // namespace cricket
namespace webrtc {
class CreateSessionDescriptionObserver;
class MediaConstraintsInterface;
class MediaStreamSignaling;
class SessionDescriptionInterface;
class WebRtcSession;
// DTLS identity request callback class.
class WebRtcIdentityRequestObserver : public DTLSIdentityRequestObserver,
public sigslot::has_slots<> {
public:
// DTLSIdentityRequestObserver overrides.
virtual void OnFailure(int error) {
SignalRequestFailed(error);
}
virtual void OnSuccess(const std::string& der_cert,
const std::string& der_private_key) {
SignalIdentityReady(der_cert, der_private_key);
}
sigslot::signal1<int> SignalRequestFailed;
sigslot::signal2<const std::string&, const std::string&> SignalIdentityReady;
};
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:
WebRtcSessionDescriptionFactory(
rtc::Thread* signaling_thread,
cricket::ChannelManager* channel_manager,
MediaStreamSignaling* mediastream_signaling,
DTLSIdentityServiceInterface* dtls_identity_service,
// TODO(jiayl): remove the dependency on session once b/10226852 is fixed.
WebRtcSession* session,
const std::string& session_id,
cricket::DataChannelType dct,
bool dtls_enabled);
virtual ~WebRtcSessionDescriptionFactory();
static void CopyCandidatesFromSessionDescription(
const SessionDescriptionInterface* source_desc,
SessionDescriptionInterface* dest_desc);
void CreateOffer(
CreateSessionDescriptionObserver* observer,
const PeerConnectionInterface::RTCOfferAnswerOptions& options);
void CreateAnswer(
CreateSessionDescriptionObserver* observer,
const MediaConstraintsInterface* constraints);
void SetSdesPolicy(cricket::SecurePolicy secure_policy);
cricket::SecurePolicy SdesPolicy() const;
sigslot::signal1<rtc::SSLIdentity*> SignalIdentityReady;
// For testing.
bool waiting_for_identity() const {
return identity_request_state_ == IDENTITY_WAITING;
}
private:
enum IdentityRequestState {
IDENTITY_NOT_NEEDED,
IDENTITY_WAITING,
IDENTITY_SUCCEEDED,
IDENTITY_FAILED,
};
// MessageHandler implementation.
virtual void OnMessage(rtc::Message* msg);
void InternalCreateOffer(CreateSessionDescriptionRequest request);
void InternalCreateAnswer(CreateSessionDescriptionRequest request);
void PostCreateSessionDescriptionFailed(
CreateSessionDescriptionObserver* observer,
const std::string& error);
void PostCreateSessionDescriptionSucceeded(
CreateSessionDescriptionObserver* observer,
SessionDescriptionInterface* description);
void OnIdentityRequestFailed(int error);
void OnIdentityReady(const std::string& der_cert,
const std::string& der_private_key);
void SetIdentity(rtc::SSLIdentity* identity);
std::queue<CreateSessionDescriptionRequest>
create_session_description_requests_;
rtc::Thread* signaling_thread_;
MediaStreamSignaling* mediastream_signaling_;
cricket::TransportDescriptionFactory transport_desc_factory_;
cricket::MediaSessionDescriptionFactory session_desc_factory_;
uint64 session_version_;
rtc::scoped_ptr<DTLSIdentityServiceInterface> identity_service_;
rtc::scoped_refptr<WebRtcIdentityRequestObserver>
identity_request_observer_;
WebRtcSession* session_;
std::string session_id_;
cricket::DataChannelType data_channel_type_;
IdentityRequestState identity_request_state_;
DISALLOW_COPY_AND_ASSIGN(WebRtcSessionDescriptionFactory);
};
} // namespace webrtc
#endif // TALK_APP_WEBRTC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
|
