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 "StorageSyncManager.h"
35 #include <wtf/StdLibExtras.h>
36
37 namespace WebCore {
38
39 typedef HashMap<String, StorageNamespace*> LocalStorageNamespaceMap;
40
localStorageNamespaceMap()41 static LocalStorageNamespaceMap& localStorageNamespaceMap()
42 {
43 DEFINE_STATIC_LOCAL(LocalStorageNamespaceMap, localStorageNamespaceMap, ());
44 return localStorageNamespaceMap;
45 }
46
localStorageNamespace(const String & path)47 PassRefPtr<StorageNamespace> StorageNamespaceImpl::localStorageNamespace(const String& path)
48 {
49 const String lookupPath = path.isNull() ? String("") : path;
50 LocalStorageNamespaceMap::iterator it = localStorageNamespaceMap().find(lookupPath);
51 if (it == localStorageNamespaceMap().end()) {
52 RefPtr<StorageNamespace> storageNamespace = adoptRef(new StorageNamespaceImpl(LocalStorage, lookupPath));
53 localStorageNamespaceMap().set(lookupPath, storageNamespace.get());
54 return storageNamespace.release();
55 }
56
57 return it->second;
58 }
59
sessionStorageNamespace()60 PassRefPtr<StorageNamespace> StorageNamespaceImpl::sessionStorageNamespace()
61 {
62 return adoptRef(new StorageNamespaceImpl(SessionStorage, String()));
63 }
64
StorageNamespaceImpl(StorageType storageType,const String & path)65 StorageNamespaceImpl::StorageNamespaceImpl(StorageType storageType, const String& path)
66 : m_storageType(storageType)
67 , m_path(path.copy()) // Copy makes it safe for our other thread to access the path.
68 , m_syncManager(0)
69 , m_isShutdown(false)
70 {
71 if (m_storageType == LocalStorage && !m_path.isEmpty())
72 m_syncManager = StorageSyncManager::create(m_path);
73 }
74
~StorageNamespaceImpl()75 StorageNamespaceImpl::~StorageNamespaceImpl()
76 {
77 ASSERT(isMainThread());
78
79 if (m_storageType == LocalStorage) {
80 ASSERT(localStorageNamespaceMap().get(m_path) == this);
81 localStorageNamespaceMap().remove(m_path);
82 }
83
84 if (!m_isShutdown)
85 close();
86 }
87
copy()88 PassRefPtr<StorageNamespace> StorageNamespaceImpl::copy()
89 {
90 ASSERT(isMainThread());
91 ASSERT(!m_isShutdown);
92 ASSERT(m_storageType == SessionStorage);
93
94 StorageNamespaceImpl* newNamespace = new StorageNamespaceImpl(m_storageType, m_path);
95
96 StorageAreaMap::iterator end = m_storageAreaMap.end();
97 for (StorageAreaMap::iterator i = m_storageAreaMap.begin(); i != end; ++i)
98 newNamespace->m_storageAreaMap.set(i->first, i->second->copy());
99 return adoptRef(newNamespace);
100 }
101
storageArea(SecurityOrigin * origin)102 PassRefPtr<StorageArea> StorageNamespaceImpl::storageArea(SecurityOrigin* origin)
103 {
104 ASSERT(isMainThread());
105 ASSERT(!m_isShutdown);
106
107 RefPtr<StorageAreaImpl> storageArea;
108 if (storageArea = m_storageAreaMap.get(origin))
109 return storageArea.release();
110
111 storageArea = adoptRef(new StorageAreaImpl(m_storageType, origin, m_syncManager));
112 m_storageAreaMap.set(origin, storageArea);
113 return storageArea.release();
114 }
115
close()116 void StorageNamespaceImpl::close()
117 {
118 ASSERT(isMainThread());
119 ASSERT(!m_isShutdown);
120
121 // If we're session storage, we shouldn't need to do any work here.
122 if (m_storageType == SessionStorage) {
123 ASSERT(!m_syncManager);
124 return;
125 }
126
127 StorageAreaMap::iterator end = m_storageAreaMap.end();
128 for (StorageAreaMap::iterator it = m_storageAreaMap.begin(); it != end; ++it)
129 it->second->close();
130
131 if (m_syncManager)
132 m_syncManager->close();
133
134 m_isShutdown = true;
135 }
136
137 } // namespace WebCore
138
139 #endif // ENABLE(DOM_STORAGE)
140