1/*
2 * Copyright (C) 2014 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "StorageNamespaceProvider.h"
28
29#include "Document.h"
30#include "Page.h"
31#include "SecurityOriginData.h"
32#include "StorageArea.h"
33#include "StorageNamespace.h"
34
35namespace WebCore {
36
37// Suggested by the HTML5 spec.
38unsigned localStorageDatabaseQuotaInBytes = 5 * 1024 * 1024;
39
40StorageNamespaceProvider::StorageNamespaceProvider()
41{
42}
43
44StorageNamespaceProvider::~StorageNamespaceProvider()
45{
46 ASSERT(m_pages.isEmpty());
47}
48
49void StorageNamespaceProvider::addPage(Page& page)
50{
51 ASSERT(!m_pages.contains(&page));
52
53 m_pages.add(&page);
54}
55
56void StorageNamespaceProvider::removePage(Page& page)
57{
58 ASSERT(m_pages.contains(&page));
59
60 m_pages.remove(&page);
61}
62
63Ref<StorageArea> StorageNamespaceProvider::localStorageArea(Document& document)
64{
65 // This StorageNamespaceProvider was retrieved from the Document's Page,
66 // so the Document had better still actually have a Page.
67 ASSERT(document.page());
68
69 bool ephemeral = document.page()->usesEphemeralSession();
70 bool transient = !document.securityOrigin().canAccessLocalStorage(&document.topOrigin());
71
72 RefPtr<StorageNamespace> storageNamespace;
73
74 if (transient)
75 storageNamespace = &transientLocalStorageNamespace(document.topOrigin());
76 else if (ephemeral)
77 storageNamespace = document.page()->ephemeralLocalStorage();
78 else
79 storageNamespace = &localStorageNamespace();
80
81 return storageNamespace->storageArea(document.securityOrigin().data());
82}
83
84StorageNamespace& StorageNamespaceProvider::localStorageNamespace()
85{
86 if (!m_localStorageNamespace)
87 m_localStorageNamespace = createLocalStorageNamespace(localStorageDatabaseQuotaInBytes);
88
89 return *m_localStorageNamespace;
90}
91
92StorageNamespace& StorageNamespaceProvider::transientLocalStorageNamespace(SecurityOrigin& securityOrigin)
93{
94 auto& slot = m_transientLocalStorageMap.add(&securityOrigin, nullptr).iterator->value;
95 if (!slot)
96 slot = createTransientLocalStorageNamespace(securityOrigin, localStorageDatabaseQuotaInBytes);
97
98 return *slot;
99}
100
101}
102