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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/renderer/extension_frame_helper.h"
#include "base/strings/string_util.h"
#include "content/public/renderer/render_frame.h"
#include "extensions/common/api/messaging/message.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/manifest_handlers/background_info.h"
#include "extensions/renderer/console.h"
#include "extensions/renderer/content_watcher.h"
#include "extensions/renderer/dispatcher.h"
#include "extensions/renderer/messaging_bindings.h"
#include "extensions/renderer/script_context.h"
#include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
#include "third_party/WebKit/public/web/WebConsoleMessage.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
namespace extensions {
namespace {
base::LazyInstance<std::set<const ExtensionFrameHelper*>> g_frame_helpers =
LAZY_INSTANCE_INITIALIZER;
// Returns true if the render frame corresponding with |frame_helper| matches
// the given criteria.
bool RenderFrameMatches(const ExtensionFrameHelper* frame_helper,
ViewType match_view_type,
int match_window_id,
const std::string& match_extension_id) {
if (match_view_type != VIEW_TYPE_INVALID &&
frame_helper->view_type() != match_view_type)
return false;
// Not all frames have a valid ViewType, e.g. devtools, most GuestViews, and
// unclassified detached WebContents.
if (frame_helper->view_type() == VIEW_TYPE_INVALID)
return false;
// This logic matches ExtensionWebContentsObserver::GetExtensionFromFrame.
blink::WebSecurityOrigin origin =
frame_helper->render_frame()->GetWebFrame()->securityOrigin();
if (origin.isUnique() ||
!base::EqualsASCII(base::StringPiece16(origin.protocol()),
kExtensionScheme) ||
!base::EqualsASCII(base::StringPiece16(origin.host()),
match_extension_id.c_str()))
return false;
if (match_window_id != extension_misc::kUnknownWindowId &&
frame_helper->browser_window_id() != match_window_id)
return false;
return true;
}
} // namespace
ExtensionFrameHelper::ExtensionFrameHelper(content::RenderFrame* render_frame,
Dispatcher* extension_dispatcher)
: content::RenderFrameObserver(render_frame),
content::RenderFrameObserverTracker<ExtensionFrameHelper>(render_frame),
view_type_(VIEW_TYPE_INVALID),
tab_id_(-1),
browser_window_id_(-1),
extension_dispatcher_(extension_dispatcher),
did_create_current_document_element_(false) {
g_frame_helpers.Get().insert(this);
}
ExtensionFrameHelper::~ExtensionFrameHelper() {
g_frame_helpers.Get().erase(this);
}
// static
std::vector<content::RenderFrame*> ExtensionFrameHelper::GetExtensionFrames(
const std::string& extension_id,
int browser_window_id,
ViewType view_type) {
std::vector<content::RenderFrame*> render_frames;
for (const ExtensionFrameHelper* helper : g_frame_helpers.Get()) {
if (RenderFrameMatches(helper, view_type, browser_window_id, extension_id))
render_frames.push_back(helper->render_frame());
}
return render_frames;
}
// static
content::RenderFrame* ExtensionFrameHelper::GetBackgroundPageFrame(
const std::string& extension_id) {
for (const ExtensionFrameHelper* helper : g_frame_helpers.Get()) {
if (RenderFrameMatches(helper, VIEW_TYPE_EXTENSION_BACKGROUND_PAGE,
extension_misc::kUnknownWindowId, extension_id)) {
blink::WebLocalFrame* web_frame = helper->render_frame()->GetWebFrame();
// Check if this is the top frame.
if (web_frame->top() == web_frame)
return helper->render_frame();
}
}
return nullptr;
}
// static
bool ExtensionFrameHelper::IsContextForEventPage(const ScriptContext* context) {
content::RenderFrame* render_frame = context->GetRenderFrame();
return context->extension() && render_frame &&
BackgroundInfo::HasLazyBackgroundPage(context->extension()) &&
ExtensionFrameHelper::Get(render_frame)->view_type() ==
VIEW_TYPE_EXTENSION_BACKGROUND_PAGE;
}
void ExtensionFrameHelper::DidCreateDocumentElement() {
did_create_current_document_element_ = true;
extension_dispatcher_->DidCreateDocumentElement(
render_frame()->GetWebFrame());
}
void ExtensionFrameHelper::DidCreateNewDocument() {
did_create_current_document_element_ = false;
}
void ExtensionFrameHelper::DidMatchCSS(
const blink::WebVector<blink::WebString>& newly_matching_selectors,
const blink::WebVector<blink::WebString>& stopped_matching_selectors) {
extension_dispatcher_->content_watcher()->DidMatchCSS(
render_frame()->GetWebFrame(), newly_matching_selectors,
stopped_matching_selectors);
}
void ExtensionFrameHelper::DidCreateScriptContext(
v8::Local<v8::Context> context,
int extension_group,
int world_id) {
extension_dispatcher_->DidCreateScriptContext(
render_frame()->GetWebFrame(), context, extension_group, world_id);
}
void ExtensionFrameHelper::WillReleaseScriptContext(
v8::Local<v8::Context> context,
int world_id) {
extension_dispatcher_->WillReleaseScriptContext(
render_frame()->GetWebFrame(), context, world_id);
}
bool ExtensionFrameHelper::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ExtensionFrameHelper, message)
IPC_MESSAGE_HANDLER(ExtensionMsg_DispatchOnConnect,
OnExtensionDispatchOnConnect)
IPC_MESSAGE_HANDLER(ExtensionMsg_DeliverMessage, OnExtensionDeliverMessage)
IPC_MESSAGE_HANDLER(ExtensionMsg_DispatchOnDisconnect,
OnExtensionDispatchOnDisconnect)
IPC_MESSAGE_HANDLER(ExtensionMsg_SetTabId, OnExtensionSetTabId)
IPC_MESSAGE_HANDLER(ExtensionMsg_UpdateBrowserWindowId,
OnUpdateBrowserWindowId)
IPC_MESSAGE_HANDLER(ExtensionMsg_NotifyRenderViewType,
OnNotifyRendererViewType)
IPC_MESSAGE_HANDLER(ExtensionMsg_Response, OnExtensionResponse)
IPC_MESSAGE_HANDLER(ExtensionMsg_MessageInvoke, OnExtensionMessageInvoke)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ExtensionFrameHelper::OnExtensionDispatchOnConnect(
int target_port_id,
const std::string& channel_name,
const ExtensionMsg_TabConnectionInfo& source,
const ExtensionMsg_ExternalConnectionInfo& info,
const std::string& tls_channel_id) {
MessagingBindings::DispatchOnConnect(
extension_dispatcher_->script_context_set(),
target_port_id,
channel_name,
source,
info,
tls_channel_id,
render_frame());
}
void ExtensionFrameHelper::OnExtensionDeliverMessage(int target_id,
const Message& message) {
MessagingBindings::DeliverMessage(
extension_dispatcher_->script_context_set(), target_id, message,
render_frame());
}
void ExtensionFrameHelper::OnExtensionDispatchOnDisconnect(
int port_id,
const std::string& error_message) {
MessagingBindings::DispatchOnDisconnect(
extension_dispatcher_->script_context_set(), port_id, error_message,
render_frame());
}
void ExtensionFrameHelper::OnExtensionSetTabId(int tab_id) {
CHECK_EQ(tab_id_, -1);
CHECK_GE(tab_id, 0);
tab_id_ = tab_id;
}
void ExtensionFrameHelper::OnUpdateBrowserWindowId(int browser_window_id) {
browser_window_id_ = browser_window_id;
}
void ExtensionFrameHelper::OnNotifyRendererViewType(ViewType type) {
// TODO(devlin): It'd be really nice to be able to
// DCHECK_EQ(VIEW_TYPE_INVALID, view_type_) here.
view_type_ = type;
}
void ExtensionFrameHelper::OnExtensionResponse(int request_id,
bool success,
const base::ListValue& response,
const std::string& error) {
extension_dispatcher_->OnExtensionResponse(request_id,
success,
response,
error);
}
void ExtensionFrameHelper::OnExtensionMessageInvoke(
const std::string& extension_id,
const std::string& module_name,
const std::string& function_name,
const base::ListValue& args,
bool user_gesture) {
extension_dispatcher_->InvokeModuleSystemMethod(render_frame(), extension_id,
module_name, function_name,
args, user_gesture);
}
} // namespace extensions
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