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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_PushNotifier_h
#define mozilla_dom_PushNotifier_h
#include "nsIPushNotifier.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIPrincipal.h"
#include "nsString.h"
#include "mozilla/Maybe.h"
namespace mozilla::dom {
class ContentChild;
class ContentParent;
/**
* `PushDispatcher` is a base class used to forward observer notifications and
* service worker events to the correct process.
*/
class MOZ_STACK_CLASS PushDispatcher {
public:
// Fires an XPCOM observer notification. This method may be called from both
// processes.
virtual nsresult NotifyObservers() = 0;
// Fires a service worker event. This method is called from the content
// process if e10s is enabled, or the parent otherwise.
virtual nsresult NotifyWorkers() = 0;
// A convenience method that calls `NotifyObservers` and `NotifyWorkers`.
nsresult NotifyObserversAndWorkers();
// Sends an IPDL message to fire an observer notification in the parent
// process. This method is only called from the content process, and only
// if e10s is enabled.
virtual bool SendToParent(ContentChild* aParentActor) = 0;
// Sends an IPDL message to fire an observer notification and a service worker
// event in the content process. This method is only called from the parent,
// and only if e10s is enabled.
virtual bool SendToChild(ContentParent* aContentActor) = 0;
// An optional method, called from the parent if e10s is enabled and there
// are no active content processes. The default behavior is a no-op.
virtual nsresult HandleNoChildProcesses();
nsIPrincipal* GetPrincipal() { return mPrincipal; }
protected:
PushDispatcher(const nsACString& aScope, nsIPrincipal* aPrincipal);
virtual ~PushDispatcher();
bool ShouldNotifyWorkers();
nsresult DoNotifyObservers(nsISupports* aSubject, const char* aTopic,
const nsACString& aScope);
const nsCString mScope;
nsCOMPtr<nsIPrincipal> mPrincipal;
};
/**
* `PushNotifier` implements the `nsIPushNotifier` interface. This service
* broadcasts XPCOM observer notifications for incoming push messages, then
* forwards incoming push messages to service workers.
*
* All scriptable methods on this interface may be called from the parent or
* content process. Observer notifications are broadcasted to both processes.
*/
class PushNotifier final : public nsIPushNotifier {
public:
PushNotifier();
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(PushNotifier, nsIPushNotifier)
NS_DECL_NSIPUSHNOTIFIER
private:
~PushNotifier();
nsresult Dispatch(PushDispatcher& aDispatcher);
};
/**
* `PushData` provides methods for retrieving push message data in different
* formats. This class is similar to the `PushMessageData` WebIDL interface.
*/
class PushData final : public nsIPushData {
public:
explicit PushData(const nsTArray<uint8_t>& aData);
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(PushData, nsIPushData)
NS_DECL_NSIPUSHDATA
private:
~PushData();
nsresult EnsureDecodedText();
nsTArray<uint8_t> mData;
nsString mDecodedText;
};
/**
* `PushMessage` exposes the subscription principal and data for a push
* message. Each `push-message` observer receives an instance of this class
* as the subject.
*/
class PushMessage final : public nsIPushMessage {
public:
PushMessage(nsIPrincipal* aPrincipal, nsIPushData* aData);
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(PushMessage, nsIPushMessage)
NS_DECL_NSIPUSHMESSAGE
private:
~PushMessage();
nsCOMPtr<nsIPrincipal> mPrincipal;
nsCOMPtr<nsIPushData> mData;
};
class PushMessageDispatcher final : public PushDispatcher {
public:
PushMessageDispatcher(const nsACString& aScope, nsIPrincipal* aPrincipal,
const nsAString& aMessageId,
const Maybe<nsTArray<uint8_t>>& aData);
~PushMessageDispatcher();
nsresult NotifyObservers() override;
nsresult NotifyWorkers() override;
bool SendToParent(ContentChild* aParentActor) override;
bool SendToChild(ContentParent* aContentActor) override;
private:
const nsString mMessageId;
const Maybe<nsTArray<uint8_t>> mData;
};
class PushSubscriptionChangeDispatcher final : public PushDispatcher {
public:
PushSubscriptionChangeDispatcher(const nsACString& aScope,
nsIPrincipal* aPrincipal);
~PushSubscriptionChangeDispatcher();
nsresult NotifyObservers() override;
nsresult NotifyWorkers() override;
bool SendToParent(ContentChild* aParentActor) override;
bool SendToChild(ContentParent* aContentActor) override;
};
class PushSubscriptionModifiedDispatcher : public PushDispatcher {
public:
PushSubscriptionModifiedDispatcher(const nsACString& aScope,
nsIPrincipal* aPrincipal);
~PushSubscriptionModifiedDispatcher();
nsresult NotifyObservers() override;
nsresult NotifyWorkers() override;
bool SendToParent(ContentChild* aParentActor) override;
bool SendToChild(ContentParent* aContentActor) override;
};
class PushErrorDispatcher final : public PushDispatcher {
public:
PushErrorDispatcher(const nsACString& aScope, nsIPrincipal* aPrincipal,
const nsAString& aMessage, uint32_t aFlags);
~PushErrorDispatcher();
nsresult NotifyObservers() override;
nsresult NotifyWorkers() override;
bool SendToParent(ContentChild* aParentActor) override;
bool SendToChild(ContentParent* aContentActor) override;
private:
nsresult HandleNoChildProcesses() override;
const nsString mMessage;
uint32_t mFlags;
};
} // namespace mozilla::dom
#endif // mozilla_dom_PushNotifier_h
|
