1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "StorageNamespaceImpl.h"
28
29 #if ENABLE(DOM_STORAGE)
30
31 #include "SecurityOriginHash.h"
32 #include "StringHash.h"
33 #include "StorageAreaImpl.h"
34 #include "StorageMap.h"
35 #include "StorageSyncManager.h"
36 #include <wtf/StdLibExtras.h>
37
38 #ifdef ANDROID
39 #include "Page.h"
40 #endif
41
42 namespace WebCore {
43
44 typedef HashMap<String, StorageNamespace*> LocalStorageNamespaceMap;
45
localStorageNamespaceMap()46 static LocalStorageNamespaceMap& localStorageNamespaceMap()
47 {
48 DEFINE_STATIC_LOCAL(LocalStorageNamespaceMap, localStorageNamespaceMap, ());
49 return localStorageNamespaceMap;
50 }
51
localStorageNamespace(const String & path,unsigned quota)52 PassRefPtr<StorageNamespace> StorageNamespaceImpl::localStorageNamespace(const String& path, unsigned quota)
53 {
54 const String lookupPath = path.isNull() ? String("") : path;
55 LocalStorageNamespaceMap::iterator it = localStorageNamespaceMap().find(lookupPath);
56 if (it == localStorageNamespaceMap().end()) {
57 RefPtr<StorageNamespace> storageNamespace = adoptRef(new StorageNamespaceImpl(LocalStorage, lookupPath, quota));
58 localStorageNamespaceMap().set(lookupPath, storageNamespace.get());
59 return storageNamespace.release();
60 }
61
62 return it->second;
63 }
64
sessionStorageNamespace()65 PassRefPtr<StorageNamespace> StorageNamespaceImpl::sessionStorageNamespace()
66 {
67 return adoptRef(new StorageNamespaceImpl(SessionStorage, String(), StorageMap::noQuota));
68 }
69
StorageNamespaceImpl(StorageType storageType,const String & path,unsigned quota)70 StorageNamespaceImpl::StorageNamespaceImpl(StorageType storageType, const String& path, unsigned quota)
71 : m_storageType(storageType)
72 , m_path(path.crossThreadString())
73 , m_syncManager(0)
74 , m_quota(quota)
75 , m_isShutdown(false)
76 {
77 if (m_storageType == LocalStorage && !m_path.isEmpty())
78 m_syncManager = StorageSyncManager::create(m_path);
79 }
80
~StorageNamespaceImpl()81 StorageNamespaceImpl::~StorageNamespaceImpl()
82 {
83 ASSERT(isMainThread());
84
85 if (m_storageType == LocalStorage) {
86 ASSERT(localStorageNamespaceMap().get(m_path) == this);
87 localStorageNamespaceMap().remove(m_path);
88 }
89
90 if (!m_isShutdown)
91 close();
92 }
93
copy()94 PassRefPtr<StorageNamespace> StorageNamespaceImpl::copy()
95 {
96 ASSERT(isMainThread());
97 ASSERT(!m_isShutdown);
98 ASSERT(m_storageType == SessionStorage);
99
100 StorageNamespaceImpl* newNamespace = new StorageNamespaceImpl(m_storageType, m_path, m_quota);
101
102 StorageAreaMap::iterator end = m_storageAreaMap.end();
103 for (StorageAreaMap::iterator i = m_storageAreaMap.begin(); i != end; ++i)
104 newNamespace->m_storageAreaMap.set(i->first, i->second->copy());
105 return adoptRef(newNamespace);
106 }
107
storageArea(PassRefPtr<SecurityOrigin> prpOrigin)108 PassRefPtr<StorageArea> StorageNamespaceImpl::storageArea(PassRefPtr<SecurityOrigin> prpOrigin)
109 {
110 ASSERT(isMainThread());
111 ASSERT(!m_isShutdown);
112
113 RefPtr<SecurityOrigin> origin = prpOrigin;
114 RefPtr<StorageAreaImpl> storageArea;
115 if (storageArea = m_storageAreaMap.get(origin))
116 return storageArea.release();
117
118 storageArea = StorageAreaImpl::create(m_storageType, origin, m_syncManager, m_quota);
119 m_storageAreaMap.set(origin.release(), storageArea);
120 return storageArea.release();
121 }
122
close()123 void StorageNamespaceImpl::close()
124 {
125 ASSERT(isMainThread());
126 ASSERT(!m_isShutdown);
127
128 // If we're session storage, we shouldn't need to do any work here.
129 if (m_storageType == SessionStorage) {
130 ASSERT(!m_syncManager);
131 return;
132 }
133
134 StorageAreaMap::iterator end = m_storageAreaMap.end();
135 for (StorageAreaMap::iterator it = m_storageAreaMap.begin(); it != end; ++it)
136 it->second->close();
137
138 if (m_syncManager)
139 m_syncManager->close();
140
141 m_isShutdown = true;
142 }
143
144 #ifdef ANDROID
clear(Page * page)145 void StorageNamespaceImpl::clear(Page* page)
146 {
147 ASSERT(isMainThread());
148 if (m_isShutdown)
149 return;
150
151 // Clear all the keys for each of the storage areas.
152 StorageAreaMap::iterator end = m_storageAreaMap.end();
153 for (StorageAreaMap::iterator it = m_storageAreaMap.begin(); it != end; ++it) {
154 // if there is no page provided, then the user tried to clear storage
155 // with only pages in private browsing mode open. So we do not need to
156 // provide a Frame* here (as the frame is only used to dispatch storage events
157 // and private browsing pages won't be using them).
158 it->second->clear(page ? page->mainFrame() : 0);
159 }
160 }
161 #endif
162
unlock()163 void StorageNamespaceImpl::unlock()
164 {
165 // Because there's a single event loop per-process, this is a no-op.
166 }
167
168 } // namespace WebCore
169
170 #endif // ENABLE(DOM_STORAGE)
171