webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 101 insertions, 0 deletions

diff --git a/Source/WebCore/storage/StorageNamespaceProvider.cpp b/Source/WebCore/storage/StorageNamespaceProvider.cpp
new file mode 100644
index 000000000..8c4af42f8
--- /dev/null
+++ b/Source/WebCore/storage/StorageNamespaceProvider.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "StorageNamespaceProvider.h"
+
+#include "Document.h"
+#include "Page.h"
+#include "SecurityOriginData.h"
+#include "StorageArea.h"
+#include "StorageNamespace.h"
+
+namespace WebCore {
+
+// Suggested by the HTML5 spec.
+unsigned localStorageDatabaseQuotaInBytes = 5 * 1024 * 1024;
+
+StorageNamespaceProvider::StorageNamespaceProvider()
+{
+}
+
+StorageNamespaceProvider::~StorageNamespaceProvider()
+{
+    ASSERT(m_pages.isEmpty());
+}
+
+void StorageNamespaceProvider::addPage(Page& page)
+{
+    ASSERT(!m_pages.contains(&page));
+
+    m_pages.add(&page);
+}
+
+void StorageNamespaceProvider::removePage(Page& page)
+{
+    ASSERT(m_pages.contains(&page));
+
+    m_pages.remove(&page);
+}
+
+RefPtr<StorageArea> StorageNamespaceProvider::localStorageArea(Document& document)
+{
+    // This StorageNamespaceProvider was retrieved from the Document's Page,
+    // so the Document had better still actually have a Page.
+    ASSERT(document.page());
+
+    bool ephemeral = document.page()->usesEphemeralSession();
+    bool transient = !document.securityOrigin().canAccessLocalStorage(&document.topOrigin());
+
+    RefPtr<StorageNamespace> storageNamespace;
+
+    if (transient)
+        storageNamespace = &transientLocalStorageNamespace(document.topOrigin());
+    else if (ephemeral)
+        storageNamespace = document.page()->ephemeralLocalStorage();
+    else
+        storageNamespace = &localStorageNamespace();
+
+    return storageNamespace->storageArea(SecurityOriginData::fromSecurityOrigin(document.securityOrigin()));
+}
+
+StorageNamespace& StorageNamespaceProvider::localStorageNamespace()
+{
+    if (!m_localStorageNamespace)
+        m_localStorageNamespace = createLocalStorageNamespace(localStorageDatabaseQuotaInBytes);
+
+    return *m_localStorageNamespace;
+}
+
+StorageNamespace& StorageNamespaceProvider::transientLocalStorageNamespace(SecurityOrigin& securityOrigin)
+{
+    auto& slot = m_transientLocalStorageMap.add(&securityOrigin, nullptr).iterator->value;
+    if (!slot)
+        slot = createTransientLocalStorageNamespace(securityOrigin, localStorageDatabaseQuotaInBytes);
+
+    return *slot;
+}
+
+}