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// Copyright (c) 2011 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 "chrome/browser/extensions/extension_function.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "chrome/browser/extensions/extension_function_dispatcher.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/extensions/extension_messages.h"
#include "content/browser/renderer_host/render_process_host.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/user_metrics.h"
#include "content/common/notification_source.h"
#include "content/common/notification_type.h"
#include "content/common/result_codes.h"
ExtensionFunction::RenderViewHostTracker::RenderViewHostTracker(
ExtensionFunction* function)
: function_(function) {
registrar_.Add(this,
NotificationType::RENDER_VIEW_HOST_DELETED,
Source<RenderViewHost>(function->render_view_host()));
}
void ExtensionFunction::RenderViewHostTracker::Observe(
NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
CHECK(type == NotificationType::RENDER_VIEW_HOST_DELETED);
CHECK(Source<RenderViewHost>(source).ptr() ==
function_->render_view_host());
function_->SetRenderViewHost(NULL);
}
ExtensionFunction::ExtensionFunction()
: request_id_(-1),
profile_(NULL),
has_callback_(false),
include_incognito_(false),
user_gesture_(false) {
}
ExtensionFunction::~ExtensionFunction() {
}
void ExtensionFunction::SetRenderViewHost(RenderViewHost* render_view_host) {
render_view_host_ = render_view_host;
tracker_.reset(render_view_host ? new RenderViewHostTracker(this) : NULL);
}
const Extension* ExtensionFunction::GetExtension() {
ExtensionService* service = profile_->GetExtensionService();
DCHECK(service);
return service->GetExtensionById(extension_id_, false);
}
Browser* ExtensionFunction::GetCurrentBrowser() {
return dispatcher()->GetCurrentBrowser(render_view_host_, include_incognito_);
}
AsyncExtensionFunction::AsyncExtensionFunction()
: args_(NULL), bad_message_(false) {
}
AsyncExtensionFunction::~AsyncExtensionFunction() {
}
void AsyncExtensionFunction::SetArgs(const ListValue* args) {
DCHECK(!args_.get()); // Should only be called once.
args_.reset(args->DeepCopy());
}
const std::string AsyncExtensionFunction::GetResult() {
std::string json;
// Some functions might not need to return any results.
if (result_.get())
base::JSONWriter::Write(result_.get(), false, &json);
return json;
}
const std::string AsyncExtensionFunction::GetError() {
return error_;
}
void AsyncExtensionFunction::Run() {
if (!RunImpl())
SendResponse(false);
}
void AsyncExtensionFunction::SendResponse(bool success) {
if (!render_view_host_ || !dispatcher())
return;
if (bad_message_) {
HandleBadMessage();
return;
}
render_view_host_->Send(new ExtensionMsg_Response(
render_view_host_->routing_id(), request_id_, success,
GetResult(), GetError()));
}
void AsyncExtensionFunction::HandleBadMessage() {
LOG(ERROR) << "bad extension message " << name_ << " : terminating renderer.";
if (RenderProcessHost::run_renderer_in_process()) {
// In single process mode it is better if we don't suicide but just crash.
CHECK(false);
} else {
NOTREACHED();
UserMetrics::RecordAction(UserMetricsAction("BadMessageTerminate_EFD"));
base::KillProcess(render_view_host_->process()->GetHandle(),
ResultCodes::KILLED_BAD_MESSAGE, false);
}
}
bool AsyncExtensionFunction::HasOptionalArgument(size_t index) {
Value* value;
return args_->Get(index, &value) && !value->IsType(Value::TYPE_NULL);
}
SyncExtensionFunction::SyncExtensionFunction() {
}
SyncExtensionFunction::~SyncExtensionFunction() {
}
void SyncExtensionFunction::Run() {
SendResponse(RunImpl());
}
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