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/*
* 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 "third_party/blink/renderer/modules/storage/storage_area.h"
#include <memory>
#include "third_party/blink/public/platform/web_storage_area.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/renderer/bindings/core/v8/exception_state.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/exception_code.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/modules/storage/dom_window_storage.h"
#include "third_party/blink/renderer/modules/storage/inspector_dom_storage_agent.h"
#include "third_party/blink/renderer/modules/storage/storage.h"
#include "third_party/blink/renderer/modules/storage/storage_event.h"
#include "third_party/blink/renderer/modules/storage/storage_namespace.h"
#include "third_party/blink/renderer/modules/storage/storage_namespace_controller.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
namespace blink {
StorageArea* StorageArea::Create(std::unique_ptr<WebStorageArea> storage_area,
StorageType storage_type) {
return new StorageArea(std::move(storage_area), storage_type);
}
StorageArea::StorageArea(std::unique_ptr<WebStorageArea> storage_area,
StorageType storage_type)
: storage_area_(std::move(storage_area)),
storage_type_(storage_type),
frame_used_for_can_access_storage_(nullptr),
can_access_storage_cached_result_(false) {}
StorageArea::~StorageArea() = default;
void StorageArea::Trace(blink::Visitor* visitor) {
visitor->Trace(frame_used_for_can_access_storage_);
}
unsigned StorageArea::length(ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return 0;
}
return storage_area_->length();
}
String StorageArea::Key(unsigned index,
ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return String();
}
return storage_area_->Key(index);
}
String StorageArea::GetItem(const String& key,
ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return String();
}
return storage_area_->GetItem(key);
}
void StorageArea::SetItem(const String& key,
const String& value,
ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return;
}
WebStorageArea::Result result = WebStorageArea::kResultOK;
storage_area_->SetItem(key, value, frame->GetDocument()->Url(), result);
if (result != WebStorageArea::kResultOK)
exception_state.ThrowDOMException(
kQuotaExceededError,
"Setting the value of '" + key + "' exceeded the quota.");
}
void StorageArea::RemoveItem(const String& key,
ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return;
}
storage_area_->RemoveItem(key, frame->GetDocument()->Url());
}
void StorageArea::Clear(ExceptionState& exception_state, LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return;
}
storage_area_->Clear(frame->GetDocument()->Url());
}
bool StorageArea::Contains(const String& key,
ExceptionState& exception_state,
LocalFrame* frame) {
if (!CanAccessStorage(frame)) {
exception_state.ThrowSecurityError("access is denied for this document.");
return false;
}
return !GetItem(key, exception_state, frame).IsNull();
}
bool StorageArea::CanAccessStorage(LocalFrame* frame) {
if (!frame || !frame->GetPage())
return false;
// Should the LocalFrame die before this StorageArea does,
// that cached reference will be cleared.
if (frame_used_for_can_access_storage_ == frame)
return can_access_storage_cached_result_;
StorageNamespaceController* controller =
StorageNamespaceController::From(frame->GetPage());
if (!controller)
return false;
bool result = controller->CanAccessStorage(frame, storage_type_);
// Move attention to the new LocalFrame.
frame_used_for_can_access_storage_ = frame;
can_access_storage_cached_result_ = result;
return result;
}
void StorageArea::DispatchLocalStorageEvent(
const String& key,
const String& old_value,
const String& new_value,
const SecurityOrigin* security_origin,
const KURL& page_url,
WebStorageArea* source_area_instance) {
// Iterate over all pages that have a StorageNamespaceController supplement.
for (Page* page : Page::OrdinaryPages()) {
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;
LocalFrame* local_frame = ToLocalFrame(frame);
LocalDOMWindow* local_window = local_frame->DomWindow();
Storage* storage =
DOMWindowStorage::From(*local_window).OptionalLocalStorage();
if (storage &&
local_frame->GetDocument()->GetSecurityOrigin()->IsSameSchemeHostPort(
security_origin) &&
!IsEventSource(storage, source_area_instance))
local_frame->DomWindow()->EnqueueWindowEvent(
StorageEvent::Create(EventTypeNames::storage, key, old_value,
new_value, page_url, storage));
}
if (InspectorDOMStorageAgent* agent =
StorageNamespaceController::From(page)->InspectorAgent())
agent->DidDispatchDOMStorageEvent(key, old_value, new_value,
kLocalStorage, security_origin);
}
}
static Page* FindPageWithSessionStorageNamespace(
const WebStorageNamespace& session_namespace) {
// Iterate over all pages that have a StorageNamespaceController supplement.
for (Page* page : Page::OrdinaryPages()) {
const bool kDontCreateIfMissing = false;
StorageNamespace* storage_namespace =
StorageNamespaceController::From(page)->SessionStorage(
kDontCreateIfMissing);
if (storage_namespace &&
storage_namespace->IsSameNamespace(session_namespace))
return page;
}
return nullptr;
}
void StorageArea::DispatchSessionStorageEvent(
const String& key,
const String& old_value,
const String& new_value,
const SecurityOrigin* security_origin,
const KURL& page_url,
const WebStorageNamespace& session_namespace,
WebStorageArea* source_area_instance) {
Page* page = FindPageWithSessionStorageNamespace(session_namespace);
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;
LocalFrame* local_frame = ToLocalFrame(frame);
LocalDOMWindow* local_window = local_frame->DomWindow();
Storage* storage =
DOMWindowStorage::From(*local_window).OptionalSessionStorage();
if (storage &&
local_frame->GetDocument()->GetSecurityOrigin()->IsSameSchemeHostPort(
security_origin) &&
!IsEventSource(storage, source_area_instance))
local_frame->DomWindow()->EnqueueWindowEvent(
StorageEvent::Create(EventTypeNames::storage, key, old_value,
new_value, page_url, storage));
}
if (InspectorDOMStorageAgent* agent =
StorageNamespaceController::From(page)->InspectorAgent())
agent->DidDispatchDOMStorageEvent(key, old_value, new_value,
kSessionStorage, security_origin);
}
bool StorageArea::IsEventSource(Storage* storage,
WebStorageArea* source_area_instance) {
DCHECK(storage);
StorageArea* area = storage->Area();
return area->storage_area_.get() == source_area_instance;
}
} // namespace blink
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