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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "ServiceWorkerUnregisterJob.h"
#include "nsIPushService.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/Unused.h"
#include "Workers.h"
#include "ServiceWorkerManager.h"
namespace mozilla {
namespace dom {
namespace workers {
class ServiceWorkerUnregisterJob::PushUnsubscribeCallback final :
public nsIUnsubscribeResultCallback
{
public:
NS_DECL_ISUPPORTS
explicit PushUnsubscribeCallback(ServiceWorkerUnregisterJob* aJob)
: mJob(aJob)
{
AssertIsOnMainThread();
}
NS_IMETHOD
OnUnsubscribe(nsresult aStatus, bool) override
{
// Warn if unsubscribing fails, but don't prevent the worker from
// unregistering.
Unused << NS_WARN_IF(NS_FAILED(aStatus));
mJob->Unregister();
return NS_OK;
}
private:
~PushUnsubscribeCallback()
{
}
RefPtr<ServiceWorkerUnregisterJob> mJob;
};
NS_IMPL_ISUPPORTS(ServiceWorkerUnregisterJob::PushUnsubscribeCallback,
nsIUnsubscribeResultCallback)
ServiceWorkerUnregisterJob::ServiceWorkerUnregisterJob(nsIPrincipal* aPrincipal,
const nsACString& aScope,
bool aSendToParent)
: ServiceWorkerJob(Type::Unregister, aPrincipal, aScope, EmptyCString())
, mResult(false)
, mSendToParent(aSendToParent)
{
}
bool
ServiceWorkerUnregisterJob::GetResult() const
{
AssertIsOnMainThread();
return mResult;
}
ServiceWorkerUnregisterJob::~ServiceWorkerUnregisterJob()
{
}
void
ServiceWorkerUnregisterJob::AsyncExecute()
{
AssertIsOnMainThread();
if (Canceled()) {
Finish(NS_ERROR_DOM_ABORT_ERR);
return;
}
// Push API, section 5: "When a service worker registration is unregistered,
// any associated push subscription must be deactivated." To ensure the
// service worker registration isn't cleared as we're unregistering, we
// unsubscribe first.
nsCOMPtr<nsIPushService> pushService =
do_GetService("@mozilla.org/push/Service;1");
if (NS_WARN_IF(!pushService)) {
Unregister();
return;
}
nsCOMPtr<nsIUnsubscribeResultCallback> unsubscribeCallback =
new PushUnsubscribeCallback(this);
nsresult rv = pushService->Unsubscribe(NS_ConvertUTF8toUTF16(mScope),
mPrincipal, unsubscribeCallback);
if (NS_WARN_IF(NS_FAILED(rv))) {
Unregister();
}
}
void
ServiceWorkerUnregisterJob::Unregister()
{
AssertIsOnMainThread();
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (Canceled() || !swm) {
Finish(NS_ERROR_DOM_ABORT_ERR);
return;
}
// Step 1 of the Unregister algorithm requires checking that the
// client origin matches the scope's origin. We perform this in
// registration->update() method directly since we don't have that
// client information available here.
// "Let registration be the result of running [[Get Registration]]
// algorithm passing scope as the argument."
RefPtr<ServiceWorkerRegistrationInfo> registration =
swm->GetRegistration(mPrincipal, mScope);
if (!registration) {
// "If registration is null, then, resolve promise with false."
Finish(NS_OK);
return;
}
// Note, we send the message to remove the registration from disk now even
// though we may only set the mPendingUninstall flag below. This is
// necessary to ensure the registration is removed if the controlled
// clients are closed by shutting down the browser. If the registration
// is resurrected by clearing mPendingUninstall then it should be saved
// to disk again.
if (mSendToParent && !registration->mPendingUninstall) {
swm->MaybeSendUnregister(mPrincipal, mScope);
}
// "Set registration's uninstalling flag."
registration->mPendingUninstall = true;
// "Resolve promise with true"
mResult = true;
InvokeResultCallbacks(NS_OK);
// "If no service worker client is using registration..."
if (!registration->IsControllingDocuments() && registration->IsIdle()) {
// "Invoke [[Clear Registration]]..."
swm->RemoveRegistration(registration);
}
Finish(NS_OK);
}
} // namespace workers
} // namespace dom
} // namespace mozilla
|
