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// Copyright (c) 2012 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/renderer/extensions/app_bindings.h"
#include "base/command_line.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension_constants.h"
#include "content/public/renderer/render_view.h"
#include "content/public/renderer/v8_value_converter.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/extension_set.h"
#include "extensions/common/manifest.h"
#include "extensions/renderer/console.h"
#include "extensions/renderer/dispatcher.h"
#include "extensions/renderer/extension_helper.h"
#include "extensions/renderer/script_context.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "v8/include/v8.h"
using blink::WebFrame;
using blink::WebLocalFrame;
using content::V8ValueConverter;
namespace extensions {
namespace {
bool IsCheckoutURL(const std::string& url_spec) {
std::string checkout_url_prefix =
CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kAppsCheckoutURL);
if (checkout_url_prefix.empty())
checkout_url_prefix = "https://checkout.google.com/";
return StartsWithASCII(url_spec, checkout_url_prefix, false);
}
bool CheckAccessToAppDetails(WebFrame* frame, v8::Isolate* isolate) {
if (!IsCheckoutURL(frame->document().url().spec())) {
std::string error("Access denied for URL: ");
error += frame->document().url().spec();
isolate->ThrowException(v8::String::NewFromUtf8(isolate, error.c_str()));
return false;
}
return true;
}
const char* kInvalidCallbackIdError = "Invalid callbackId";
} // namespace
AppBindings::AppBindings(Dispatcher* dispatcher, ScriptContext* context)
: ObjectBackedNativeHandler(context),
ChromeV8ExtensionHandler(context),
dispatcher_(dispatcher) {
RouteFunction("GetIsInstalled",
base::Bind(&AppBindings::GetIsInstalled, base::Unretained(this)));
RouteFunction("GetDetails",
base::Bind(&AppBindings::GetDetails, base::Unretained(this)));
RouteFunction("GetDetailsForFrame",
base::Bind(&AppBindings::GetDetailsForFrame, base::Unretained(this)));
RouteFunction("GetInstallState",
base::Bind(&AppBindings::GetInstallState, base::Unretained(this)));
RouteFunction("GetRunningState",
base::Bind(&AppBindings::GetRunningState, base::Unretained(this)));
}
void AppBindings::GetIsInstalled(
const v8::FunctionCallbackInfo<v8::Value>& args) {
const Extension* extension = context()->extension();
// TODO(aa): Why only hosted app?
bool result = extension && extension->is_hosted_app() &&
dispatcher_->IsExtensionActive(extension->id());
args.GetReturnValue().Set(result);
}
void AppBindings::GetDetails(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(context()->web_frame());
args.GetReturnValue().Set(GetDetailsForFrameImpl(context()->web_frame()));
}
void AppBindings::GetDetailsForFrame(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(context()->web_frame());
if (!CheckAccessToAppDetails(context()->web_frame(), context()->isolate()))
return;
if (args.Length() < 0) {
context()->isolate()->ThrowException(
v8::String::NewFromUtf8(context()->isolate(), "Not enough arguments."));
return;
}
if (!args[0]->IsObject()) {
context()->isolate()->ThrowException(v8::String::NewFromUtf8(
context()->isolate(), "Argument 0 must be an object."));
return;
}
v8::Local<v8::Context> context =
v8::Local<v8::Object>::Cast(args[0])->CreationContext();
CHECK(!context.IsEmpty());
WebLocalFrame* target_frame = WebLocalFrame::frameForContext(context);
if (!target_frame) {
console::Error(args.GetIsolate()->GetCallingContext(),
"Could not find frame for specified object.");
return;
}
args.GetReturnValue().Set(GetDetailsForFrameImpl(target_frame));
}
v8::Handle<v8::Value> AppBindings::GetDetailsForFrameImpl(
WebFrame* frame) {
v8::Isolate* isolate = frame->mainWorldScriptContext()->GetIsolate();
if (frame->document().securityOrigin().isUnique())
return v8::Null(isolate);
const Extension* extension =
dispatcher_->extensions()->GetExtensionOrAppByURL(
frame->document().url());
if (!extension)
return v8::Null(isolate);
scoped_ptr<base::DictionaryValue> manifest_copy(
extension->manifest()->value()->DeepCopy());
manifest_copy->SetString("id", extension->id());
scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
return converter->ToV8Value(manifest_copy.get(),
frame->mainWorldScriptContext());
}
void AppBindings::GetInstallState(
const v8::FunctionCallbackInfo<v8::Value>& args) {
// Get the callbackId.
int callback_id = 0;
if (args.Length() == 1) {
if (!args[0]->IsInt32()) {
context()->isolate()->ThrowException(v8::String::NewFromUtf8(
context()->isolate(), kInvalidCallbackIdError));
return;
}
callback_id = args[0]->Int32Value();
}
content::RenderView* render_view = context()->GetRenderView();
CHECK(render_view);
Send(new ExtensionHostMsg_GetAppInstallState(
render_view->GetRoutingID(), context()->web_frame()->document().url(),
GetRoutingID(), callback_id));
}
void AppBindings::GetRunningState(
const v8::FunctionCallbackInfo<v8::Value>& args) {
// To distinguish between ready_to_run and cannot_run states, we need the top
// level frame.
const WebFrame* parent_frame = context()->web_frame();
while (parent_frame->parent())
parent_frame = parent_frame->parent();
const ExtensionSet* extensions = dispatcher_->extensions();
// The app associated with the top level frame.
const Extension* parent_app = extensions->GetHostedAppByURL(
parent_frame->document().url());
// The app associated with this frame.
const Extension* this_app = extensions->GetHostedAppByURL(
context()->web_frame()->document().url());
if (!this_app || !parent_app) {
args.GetReturnValue().Set(v8::String::NewFromUtf8(
context()->isolate(), extension_misc::kAppStateCannotRun));
return;
}
const char* state = NULL;
if (dispatcher_->IsExtensionActive(parent_app->id())) {
if (parent_app == this_app)
state = extension_misc::kAppStateRunning;
else
state = extension_misc::kAppStateCannotRun;
} else if (parent_app == this_app) {
state = extension_misc::kAppStateReadyToRun;
} else {
state = extension_misc::kAppStateCannotRun;
}
args.GetReturnValue()
.Set(v8::String::NewFromUtf8(context()->isolate(), state));
}
bool AppBindings::OnMessageReceived(const IPC::Message& message) {
IPC_BEGIN_MESSAGE_MAP(AppBindings, message)
IPC_MESSAGE_HANDLER(ExtensionMsg_GetAppInstallStateResponse,
OnAppInstallStateResponse)
IPC_MESSAGE_UNHANDLED(CHECK(false) << "Unhandled IPC message")
IPC_END_MESSAGE_MAP()
return true;
}
void AppBindings::OnAppInstallStateResponse(
const std::string& state, int callback_id) {
v8::Isolate* isolate = context()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Context::Scope context_scope(context()->v8_context());
v8::Handle<v8::Value> argv[] = {
v8::String::NewFromUtf8(isolate, state.c_str()),
v8::Integer::New(isolate, callback_id)
};
context()->module_system()->CallModuleMethod(
"app", "onInstallStateResponse", arraysize(argv), argv);
}
} // namespace extensions
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