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// Copyright 2017 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/chrome_setting.h"
#include "base/memory/ptr_util.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
#include "extensions/renderer/api_event_handler.h"
#include "extensions/renderer/api_request_handler.h"
#include "extensions/renderer/api_signature.h"
#include "extensions/renderer/api_type_reference_map.h"
#include "gin/arguments.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
namespace extensions {
v8::Local<v8::Object> ChromeSetting::Create(v8::Local<v8::Context> context,
const std::string& property_name,
APIRequestHandler* request_handler,
APIEventHandler* event_handler,
APITypeReferenceMap* type_refs) {
auto value_spec = base::MakeUnique<base::DictionaryValue>();
// Most ChromeSettings have a pref that matches the property name and are of
// type boolean.
base::StringPiece pref_name = property_name;
base::StringPiece type = "boolean";
// A few of ChromeSettings are special, and have different arguments.
base::StringPiece ref;
if (property_name == "animationPolicy") {
type = "string";
auto enum_list = base::MakeUnique<base::ListValue>();
enum_list->AppendString("allowed");
enum_list->AppendString("once");
enum_list->AppendString("none");
value_spec->Set("enum", std::move(enum_list));
} else if (property_name == "webRTCIPHandlingPolicy") {
ref = "IPHandlingPolicy";
} else if (property_name == "spdyProxyEnabled") {
pref_name = "spdy_proxy.enabled";
} else if (property_name == "dataReductionDailyContentLength") {
type = "array";
pref_name = "data_reduction.daily_original_length";
} else if (property_name == "dataReductionDailyReceivedLength") {
type = "array";
pref_name = "data_reduction.daily_received_length";
} else if (property_name == "dataUsageReportingEnabled") {
pref_name = "data_usage_reporting.enabled";
} else if (property_name == "proxy") {
ref = "ProxyConfig";
}
if (!ref.empty())
value_spec->SetString("$ref", ref);
else
value_spec->SetString("type", type);
// The set() call takes an object { value: { type: <t> }, ... }, where <t>
// is the custom set() argument specified above by value_spec.
base::DictionaryValue set_spec;
set_spec.SetString("type", "object");
auto properties = base::MakeUnique<base::DictionaryValue>();
properties->Set("value", std::move(value_spec));
set_spec.Set("properties", std::move(properties));
gin::Handle<ChromeSetting> handle = gin::CreateHandle(
context->GetIsolate(),
new ChromeSetting(request_handler, event_handler, type_refs,
pref_name.as_string(), set_spec));
return handle.ToV8().As<v8::Object>();
}
ChromeSetting::ChromeSetting(APIRequestHandler* request_handler,
APIEventHandler* event_handler,
const APITypeReferenceMap* type_refs,
const std::string& pref_name,
const base::DictionaryValue& argument_spec)
: request_handler_(request_handler),
event_handler_(event_handler),
type_refs_(type_refs),
pref_name_(pref_name),
argument_spec_(argument_spec) {}
ChromeSetting::~ChromeSetting() = default;
gin::WrapperInfo ChromeSetting::kWrapperInfo = {gin::kEmbedderNativeGin};
gin::ObjectTemplateBuilder ChromeSetting::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return Wrappable<ChromeSetting>::GetObjectTemplateBuilder(isolate)
.SetMethod("get", &ChromeSetting::Get)
.SetMethod("set", &ChromeSetting::Set)
.SetMethod("clear", &ChromeSetting::Clear)
.SetProperty("onChange", &ChromeSetting::GetOnChangeEvent);
}
void ChromeSetting::Get(gin::Arguments* arguments) {
HandleFunction("get", arguments);
}
void ChromeSetting::Set(gin::Arguments* arguments) {
v8::Isolate* isolate = arguments->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Object> holder;
CHECK(arguments->GetHolder(&holder));
v8::Local<v8::Context> context = holder->CreationContext();
v8::Local<v8::Value> value = arguments->PeekNext();
// The set schema included in the Schema object is generic, since it varies
// per-setting. However, this is only ever for a single setting, so we can
// enforce the types more thoroughly.
std::string error;
if (!value.IsEmpty() && !argument_spec_.ParseArgument(
context, value, *type_refs_, nullptr, &error)) {
arguments->ThrowTypeError("Invalid invocation");
return;
}
HandleFunction("set", arguments);
}
void ChromeSetting::Clear(gin::Arguments* arguments) {
HandleFunction("clear", arguments);
}
v8::Local<v8::Value> ChromeSetting::GetOnChangeEvent(
gin::Arguments* arguments) {
v8::Isolate* isolate = arguments->isolate();
v8::Local<v8::Object> holder;
CHECK(arguments->GetHolder(&holder));
v8::Local<v8::Context> context = holder->CreationContext();
v8::Local<v8::Object> wrapper = GetWrapper(isolate);
v8::Local<v8::Private> key = v8::Private::ForApi(
isolate, gin::StringToSymbol(isolate, "onChangeEvent"));
v8::Local<v8::Value> event;
if (!wrapper->GetPrivate(context, key).ToLocal(&event)) {
NOTREACHED();
return v8::Local<v8::Value>();
}
DCHECK(!event.IsEmpty());
if (event->IsUndefined()) {
event = event_handler_->CreateEventInstance(
base::StringPrintf("types.ChromeSetting.%s.onChange",
pref_name_.c_str()),
context);
v8::Maybe<bool> set_result = wrapper->SetPrivate(context, key, event);
if (!set_result.IsJust() || !set_result.FromJust()) {
NOTREACHED();
return v8::Local<v8::Value>();
}
}
return event;
}
void ChromeSetting::HandleFunction(const std::string& method_name,
gin::Arguments* arguments) {
v8::Isolate* isolate = arguments->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Object> holder;
CHECK(arguments->GetHolder(&holder));
v8::Local<v8::Context> context = holder->CreationContext();
std::vector<v8::Local<v8::Value>> argument_list;
if (arguments->Length() > 0) {
// Just copying handles should never fail.
CHECK(arguments->GetRemaining(&argument_list));
}
std::string full_name = "types.ChromeSetting." + method_name;
std::unique_ptr<base::ListValue> converted_arguments;
v8::Local<v8::Function> callback;
std::string error;
if (!type_refs_->GetTypeMethodSignature(full_name)->ParseArgumentsToJSON(
context, argument_list, *type_refs_, &converted_arguments, &callback,
&error)) {
arguments->ThrowTypeError("Invalid invocation");
return;
}
converted_arguments->Insert(0u, base::MakeUnique<base::Value>(pref_name_));
request_handler_->StartRequest(context, full_name,
std::move(converted_arguments), callback,
v8::Local<v8::Function>());
}
} // namespace extensions
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