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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* -*- 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/. */
#include "LocalStorage.h"
#include "LocalStorageCache.h"
#include "LocalStorageManager.h"
#include "StorageUtils.h"
#include "nsIPrincipal.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/StorageBinding.h"
#include "mozilla/dom/StorageEvent.h"
#include "mozilla/dom/StorageEventBinding.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/PBackgroundChild.h"
#include "mozilla/Preferences.h"
#include "mozilla/EnumSet.h"
#include "nsThreadUtils.h"
#include "nsContentUtils.h"
#include "nsServiceManagerUtils.h"
namespace mozilla {
using namespace ipc;
namespace dom {
NS_IMPL_CYCLE_COLLECTION_CLASS(LocalStorage)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(LocalStorage, Storage)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(LocalStorage, Storage)
CycleCollectionNoteChild(
cb, NS_ISUPPORTS_CAST(nsIDOMStorageManager*, tmp->mManager.get()),
"mManager");
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(LocalStorage)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END_INHERITING(Storage)
NS_IMPL_ADDREF_INHERITED(LocalStorage, Storage)
NS_IMPL_RELEASE_INHERITED(LocalStorage, Storage)
LocalStorage::LocalStorage(nsPIDOMWindowInner* aWindow,
LocalStorageManager* aManager,
LocalStorageCache* aCache,
const nsAString& aDocumentURI,
nsIPrincipal* aPrincipal,
nsIPrincipal* aStoragePrincipal, bool aIsPrivate)
: Storage(aWindow, aPrincipal, aStoragePrincipal),
mManager(aManager),
mCache(aCache),
mDocumentURI(aDocumentURI),
mIsPrivate(aIsPrivate) {
mCache->Preload();
}
LocalStorage::~LocalStorage() = default;
int64_t LocalStorage::GetOriginQuotaUsage() const {
return mCache->GetOriginQuotaUsage(this);
}
uint32_t LocalStorage::GetLength(nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return 0;
}
uint32_t length;
aRv = mCache->GetLength(this, &length);
return length;
}
void LocalStorage::Key(uint32_t aIndex, nsAString& aResult,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
aRv = mCache->GetKey(this, aIndex, aResult);
}
void LocalStorage::GetItem(const nsAString& aKey, nsAString& aResult,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
aRv = mCache->GetItem(this, aKey, aResult);
}
void LocalStorage::SetItem(const nsAString& aKey, const nsAString& aData,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsString data;
bool ok = data.Assign(aData, fallible);
if (!ok) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
nsString old;
aRv = mCache->SetItem(this, aKey, data, old);
if (aRv.Failed()) {
return;
}
if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
OnChange(aKey, old, aData);
}
}
void LocalStorage::RemoveItem(const nsAString& aKey,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsAutoString old;
aRv = mCache->RemoveItem(this, aKey, old);
if (aRv.Failed()) {
return;
}
if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
OnChange(aKey, old, VoidString());
}
}
void LocalStorage::Clear(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
aRv = mCache->Clear(this);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
if (!aRv.ErrorCodeIs(NS_SUCCESS_DOM_NO_OPERATION)) {
OnChange(VoidString(), VoidString(), VoidString());
}
}
void LocalStorage::OnChange(const nsAString& aKey, const nsAString& aOldValue,
const nsAString& aNewValue) {
NotifyChange(/* aStorage */ this, StoragePrincipal(), aKey, aOldValue,
aNewValue, /* aStorageType */ u"localStorage", mDocumentURI,
mIsPrivate, /* aImmediateDispatch */ false);
}
void LocalStorage::ApplyEvent(StorageEvent* aStorageEvent) {
MOZ_ASSERT(aStorageEvent);
nsAutoString key;
nsAutoString old;
nsAutoString value;
aStorageEvent->GetKey(key);
aStorageEvent->GetNewValue(value);
// No key means clearing the full storage.
if (key.IsVoid()) {
MOZ_ASSERT(value.IsVoid());
mCache->Clear(this, LocalStorageCache::E10sPropagated);
return;
}
// No new value means removing the key.
if (value.IsVoid()) {
mCache->RemoveItem(this, key, old, LocalStorageCache::E10sPropagated);
return;
}
// Otherwise, we set the new value.
mCache->SetItem(this, key, value, old, LocalStorageCache::E10sPropagated);
}
void LocalStorage::GetSupportedNames(nsTArray<nsString>& aKeys) {
if (!CanUseStorage(*nsContentUtils::SubjectPrincipal())) {
// return just an empty array
aKeys.Clear();
return;
}
mCache->GetKeys(this, aKeys);
}
bool LocalStorage::IsForkOf(const Storage* aOther) const {
MOZ_ASSERT(aOther);
if (aOther->Type() != eLocalStorage) {
return false;
}
return mCache == static_cast<const LocalStorage*>(aOther)->mCache;
}
} // namespace dom
} // namespace mozilla
|
