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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/extensions/api/tabs_hooks_delegate.h"
#include <string_view>
#include "content/public/renderer/v8_value_converter.h"
#include "extensions/common/api/messaging/message.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest.h"
#include "extensions/common/mojom/message_port.mojom-shared.h"
#include "extensions/renderer/api/messaging/message_target.h"
#include "extensions/renderer/api/messaging/messaging_util.h"
#include "extensions/renderer/api/messaging/native_renderer_messaging_service.h"
#include "extensions/renderer/bindings/api_binding_types.h"
#include "extensions/renderer/get_script_context.h"
#include "extensions/renderer/script_context.h"
#include "gin/converter.h"
namespace extensions {
namespace {
using RequestResult = APIBindingHooks::RequestResult;
constexpr char kConnect[] = "tabs.connect";
constexpr char kSendMessage[] = "tabs.sendMessage";
constexpr char kSendTabsRequest[] = "tabs.sendRequest";
} // namespace
TabsHooksDelegate::TabsHooksDelegate(
NativeRendererMessagingService* messaging_service)
: messaging_service_(messaging_service) {}
TabsHooksDelegate::~TabsHooksDelegate() = default;
RequestResult TabsHooksDelegate::HandleRequest(
const std::string& method_name,
const APISignature* signature,
v8::Local<v8::Context> context,
v8::LocalVector<v8::Value>* arguments,
const APITypeReferenceMap& refs) {
// TODO(devlin): This logic is the same in the RuntimeCustomHooksDelegate -
// would it make sense to share it?
using Handler = RequestResult (TabsHooksDelegate::*)(
ScriptContext*, const APISignature::V8ParseResult&);
static const struct {
Handler handler;
std::string_view method;
} kHandlers[] = {
{&TabsHooksDelegate::HandleSendMessage, kSendMessage},
{&TabsHooksDelegate::HandleSendRequest, kSendTabsRequest},
{&TabsHooksDelegate::HandleConnect, kConnect},
};
ScriptContext* script_context = GetScriptContextFromV8ContextChecked(context);
Handler handler = nullptr;
for (const auto& handler_entry : kHandlers) {
if (handler_entry.method == method_name) {
handler = handler_entry.handler;
break;
}
}
if (!handler)
return RequestResult(RequestResult::NOT_HANDLED);
APISignature::V8ParseResult parse_result =
signature->ParseArgumentsToV8(context, *arguments, refs);
if (!parse_result.succeeded()) {
RequestResult result(RequestResult::INVALID_INVOCATION);
result.error = std::move(*parse_result.error);
return result;
}
return (this->*handler)(script_context, parse_result);
}
RequestResult TabsHooksDelegate::HandleSendRequest(
ScriptContext* script_context,
const APISignature::V8ParseResult& parse_result) {
const v8::LocalVector<v8::Value>& arguments = *parse_result.arguments;
DCHECK_EQ(3u, arguments.size());
// tabs.sendRequest() is restricted to MV2, so it should never be called with
// a promise based request as they are restricted to MV3 and above.
DCHECK_NE(binding::AsyncResponseType::kPromise, parse_result.async_type);
int tab_id = messaging_util::ExtractIntegerId(arguments[0]);
v8::Local<v8::Value> v8_message = arguments[1];
std::string error;
std::unique_ptr<Message> message = messaging_util::MessageFromV8(
script_context->v8_context(), v8_message,
messaging_util::GetSerializationFormat(*script_context), &error);
if (!message) {
RequestResult result(RequestResult::INVALID_INVOCATION);
result.error = std::move(error);
return result;
}
v8::Local<v8::Function> response_callback;
if (!arguments[2]->IsNull())
response_callback = arguments[2].As<v8::Function>();
messaging_service_->SendOneTimeMessage(
script_context, MessageTarget::ForTab(tab_id, messaging_util::kNoFrameId),
mojom::ChannelType::kSendRequest, *message, parse_result.async_type,
response_callback);
return RequestResult(RequestResult::HANDLED);
}
RequestResult TabsHooksDelegate::HandleSendMessage(
ScriptContext* script_context,
const APISignature::V8ParseResult& parse_result) {
const v8::LocalVector<v8::Value>& arguments = *parse_result.arguments;
DCHECK_EQ(4u, arguments.size());
int tab_id = messaging_util::ExtractIntegerId(arguments[0]);
messaging_util::MessageOptions options;
if (!arguments[2]->IsNull()) {
options = messaging_util::ParseMessageOptions(
script_context->v8_context(), arguments[2].As<v8::Object>(),
messaging_util::PARSE_FRAME_ID);
}
v8::Local<v8::Value> v8_message = arguments[1];
DCHECK(!v8_message.IsEmpty());
std::string error;
std::unique_ptr<Message> message = messaging_util::MessageFromV8(
script_context->v8_context(), v8_message,
messaging_util::GetSerializationFormat(*script_context), &error);
if (!message) {
RequestResult result(RequestResult::INVALID_INVOCATION);
result.error = std::move(error);
return result;
}
v8::Local<v8::Function> response_callback;
if (!arguments[3]->IsNull())
response_callback = arguments[3].As<v8::Function>();
v8::Local<v8::Promise> promise = messaging_service_->SendOneTimeMessage(
script_context,
MessageTarget::ForTab(tab_id, options.frame_id, options.document_id),
mojom::ChannelType::kSendMessage, *message, parse_result.async_type,
response_callback);
DCHECK_EQ(parse_result.async_type == binding::AsyncResponseType::kPromise,
!promise.IsEmpty())
<< "SendOneTimeMessage should only return a Promise for promise based "
"API calls, otherwise it should be empty";
RequestResult result(RequestResult::HANDLED);
if (parse_result.async_type == binding::AsyncResponseType::kPromise) {
result.return_value = promise;
}
return result;
}
RequestResult TabsHooksDelegate::HandleConnect(
ScriptContext* script_context,
const APISignature::V8ParseResult& parse_result) {
const v8::LocalVector<v8::Value>& arguments = *parse_result.arguments;
DCHECK_EQ(2u, arguments.size());
DCHECK_EQ(binding::AsyncResponseType::kNone, parse_result.async_type);
int tab_id = messaging_util::ExtractIntegerId(arguments[0]);
messaging_util::MessageOptions options;
if (!arguments[1]->IsNull()) {
options = messaging_util::ParseMessageOptions(
script_context->v8_context(), arguments[1].As<v8::Object>(),
messaging_util::PARSE_FRAME_ID | messaging_util::PARSE_CHANNEL_NAME);
}
gin::Handle<GinPort> port = messaging_service_->Connect(
script_context,
MessageTarget::ForTab(tab_id, options.frame_id, options.document_id),
options.channel_name,
messaging_util::GetSerializationFormat(*script_context));
DCHECK(!port.IsEmpty());
RequestResult result(RequestResult::HANDLED);
result.return_value = port.ToV8();
return result;
}
} // namespace extensions
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