1 files changed, 197 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/storage/StorageArea.cpp b/chromium/third_party/WebKit/Source/core/storage/StorageArea.cpp
new file mode 100644
index 00000000000..49334cf36cd
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/core/storage/StorageArea.cpp
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2009 Google Inc. All Rights Reserved.
+ *           (C) 2008 Apple Inc.
+ *
+ * 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 GOOGLE INC. ``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 GOOGLE INC. OR
+ * 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 "core/storage/StorageArea.h"
+
+#include "bindings/v8/ExceptionState.h"
+#include "core/dom/Document.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/frame/LocalDOMWindow.h"
+#include "core/frame/LocalFrame.h"
+#include "core/inspector/InspectorInstrumentation.h"
+#include "core/page/Page.h"
+#include "core/page/StorageClient.h"
+#include "core/storage/Storage.h"
+#include "core/storage/StorageEvent.h"
+#include "core/storage/StorageNamespace.h"
+#include "platform/weborigin/SecurityOrigin.h"
+#include "public/platform/WebStorageArea.h"
+#include "public/platform/WebString.h"
+#include "public/platform/WebURL.h"
+
+namespace WebCore {
+
+StorageArea::StorageArea(PassOwnPtr<blink::WebStorageArea> storageArea, StorageType storageType)
+    : m_storageArea(storageArea)
+    , m_storageType(storageType)
+    , m_canAccessStorageCachedResult(false)
+    , m_canAccessStorageCachedFrame(0)
+{
+}
+
+StorageArea::~StorageArea()
+{
+}
+
+unsigned StorageArea::length(ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return 0;
+    }
+    return m_storageArea->length();
+}
+
+String StorageArea::key(unsigned index, ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return String();
+    }
+    return m_storageArea->key(index);
+}
+
+String StorageArea::getItem(const String& key, ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return String();
+    }
+    return m_storageArea->getItem(key);
+}
+
+void StorageArea::setItem(const String& key, const String& value, ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return;
+    }
+    blink::WebStorageArea::Result result = blink::WebStorageArea::ResultOK;
+    m_storageArea->setItem(key, value, frame->document()->url(), result);
+    if (result != blink::WebStorageArea::ResultOK)
+        exceptionState.throwDOMException(QuotaExceededError, "Setting the value of '" + key + "' exceeded the quota.");
+}
+
+void StorageArea::removeItem(const String& key, ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return;
+    }
+    m_storageArea->removeItem(key, frame->document()->url());
+}
+
+void StorageArea::clear(ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return;
+    }
+    m_storageArea->clear(frame->document()->url());
+}
+
+bool StorageArea::contains(const String& key, ExceptionState& exceptionState, LocalFrame* frame)
+{
+    if (!canAccessStorage(frame)) {
+        exceptionState.throwSecurityError("access is denied for this document.");
+        return false;
+    }
+    return !getItem(key, exceptionState, frame).isNull();
+}
+
+bool StorageArea::canAccessStorage(LocalFrame* frame)
+{
+    if (!frame || !frame->page())
+        return false;
+    if (m_canAccessStorageCachedFrame == frame)
+        return m_canAccessStorageCachedResult;
+    bool result = frame->page()->storageClient().canAccessStorage(frame, m_storageType);
+    m_canAccessStorageCachedFrame = frame;
+    m_canAccessStorageCachedResult = result;
+    return result;
+}
+
+size_t StorageArea::memoryBytesUsedByCache()
+{
+    return m_storageArea->memoryBytesUsedByCache();
+}
+
+void StorageArea::dispatchLocalStorageEvent(const String& key, const String& oldValue, const String& newValue, SecurityOrigin* securityOrigin, const KURL& pageURL, blink::WebStorageArea* sourceAreaInstance, bool originatedInProcess)
+{
+    // FIXME: This looks suspicious. Why doesn't this use allPages instead?
+    const HashSet<Page*>& pages = Page::ordinaryPages();
+    for (HashSet<Page*>::const_iterator it = pages.begin(); it != pages.end(); ++it) {
+        for (Frame* frame = (*it)->mainFrame(); frame; frame = frame->tree().traverseNext()) {
+            // FIXME: We do not yet have a way to dispatch events to out-of-process frames.
+            if (!frame->isLocalFrame())
+                continue;
+            Storage* storage = frame->domWindow()->optionalLocalStorage();
+            if (storage && toLocalFrame(frame)->document()->securityOrigin()->canAccess(securityOrigin) && !isEventSource(storage, sourceAreaInstance))
+                frame->domWindow()->enqueueWindowEvent(StorageEvent::create(EventTypeNames::storage, key, oldValue, newValue, pageURL, storage));
+        }
+        InspectorInstrumentation::didDispatchDOMStorageEvent(*it, key, oldValue, newValue, LocalStorage, securityOrigin);
+    }
+}
+
+static Page* findPageWithSessionStorageNamespace(const blink::WebStorageNamespace& sessionNamespace)
+{
+    // FIXME: This looks suspicious. Why doesn't this use allPages instead?
+    const HashSet<Page*>& pages = Page::ordinaryPages();
+    for (HashSet<Page*>::const_iterator it = pages.begin(); it != pages.end(); ++it) {
+        const bool dontCreateIfMissing = false;
+        StorageNamespace* storageNamespace = (*it)->sessionStorage(dontCreateIfMissing);
+        if (storageNamespace && storageNamespace->isSameNamespace(sessionNamespace))
+            return *it;
+    }
+    return 0;
+}
+
+void StorageArea::dispatchSessionStorageEvent(const String& key, const String& oldValue, const String& newValue, SecurityOrigin* securityOrigin, const KURL& pageURL, const blink::WebStorageNamespace& sessionNamespace, blink::WebStorageArea* sourceAreaInstance, bool originatedInProcess)
+{
+    Page* page = findPageWithSessionStorageNamespace(sessionNamespace);
+    if (!page)
+        return;
+
+    for (Frame* frame = page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
+        // FIXME: We do not yet have a way to dispatch events to out-of-process frames.
+        if (!frame->isLocalFrame())
+            continue;
+        Storage* storage = frame->domWindow()->optionalSessionStorage();
+        if (storage && toLocalFrame(frame)->document()->securityOrigin()->canAccess(securityOrigin) && !isEventSource(storage, sourceAreaInstance))
+            frame->domWindow()->enqueueWindowEvent(StorageEvent::create(EventTypeNames::storage, key, oldValue, newValue, pageURL, storage));
+    }
+    InspectorInstrumentation::didDispatchDOMStorageEvent(page, key, oldValue, newValue, SessionStorage, securityOrigin);
+}
+
+bool StorageArea::isEventSource(Storage* storage, blink::WebStorageArea* sourceAreaInstance)
+{
+    ASSERT(storage);
+    StorageArea* area = storage->area();
+    return area->m_storageArea == sourceAreaInstance;
+}
+
+} // namespace WebCore