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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/renderer/extensions/chrome_app_bindings.h"
#include "base/command_line.h"
#include "base/json/json_writer.h"
#include "base/string16.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension_set.h"
#include "chrome/renderer/extensions/extension_dispatcher.h"
#include "chrome/renderer/extensions/extension_helper.h"
#include "content/renderer/render_view.h"
#include "content/renderer/v8_value_converter.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "v8/include/v8.h"
using WebKit::WebFrame;
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 = WebFrame::frameForCurrentContext();
if (!frame) {
LOG(ERROR) << "Could not get frame for current context.";
return false;
}
if (!IsCheckoutURL(frame->document().url().spec())) {
std::string error("Access denied for URL: ");
error += frame->document().url().spec();
v8::ThrowException(v8::String::New(error.c_str()));
return false;
}
return true;
}
} // namespace
const char kAppExtensionName[] = "v8/ChromeApp";
namespace extensions_v8 {
class ChromeAppExtensionWrapper : public v8::Extension {
public:
explicit ChromeAppExtensionWrapper(ExtensionDispatcher* extension_dispatcher)
: v8::Extension(
kAppExtensionName,
"var chrome;"
"if (!chrome)"
" chrome = {};"
"if (!chrome.app) {"
" chrome.app = new function() {"
" native function GetIsInstalled();"
" native function Install();"
" native function GetDetails();"
" native function GetDetailsForFrame();"
" this.__defineGetter__('isInstalled', GetIsInstalled);"
" this.install = Install;"
" this.getDetails = GetDetails;"
" this.getDetailsForFrame = GetDetailsForFrame;"
" };"
"}") {
extension_dispatcher_ = extension_dispatcher;
}
~ChromeAppExtensionWrapper() {
extension_dispatcher_ = NULL;
}
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("GetIsInstalled"))) {
return v8::FunctionTemplate::New(GetIsInstalled);
} else if (name->Equals(v8::String::New("Install"))) {
return v8::FunctionTemplate::New(Install);
} else if (name->Equals(v8::String::New("GetDetails"))) {
return v8::FunctionTemplate::New(GetDetails);
} else if (name->Equals(v8::String::New("GetDetailsForFrame"))) {
return v8::FunctionTemplate::New(GetDetailsForFrame);
} else {
return v8::Handle<v8::FunctionTemplate>();
}
}
static v8::Handle<v8::Value> GetIsInstalled(const v8::Arguments& args) {
WebFrame* frame = WebFrame::frameForCurrentContext();
if (!frame)
return v8::False();
GURL url(frame->document().url());
if (url.is_empty() ||
!url.is_valid() ||
!(url.SchemeIs("http") || url.SchemeIs("https")))
return v8::False();
const ::Extension* extension =
extension_dispatcher_->extensions()->GetByURL(frame->document().url());
bool has_web_extent = extension &&
extension_dispatcher_->IsApplicationActive(extension->id());
return v8::Boolean::New(has_web_extent);
}
static v8::Handle<v8::Value> Install(const v8::Arguments& args) {
WebFrame* frame = WebFrame::frameForCurrentContext();
if (!frame || !frame->view())
return v8::Undefined();
RenderView* render_view = RenderView::FromWebView(frame->view());
if (!render_view)
return v8::Undefined();
string16 error;
ExtensionHelper* helper = ExtensionHelper::Get(render_view);
if (!helper->InstallWebApplicationUsingDefinitionFile(frame, &error))
v8::ThrowException(v8::String::New(UTF16ToUTF8(error).c_str()));
return v8::Undefined();
}
static v8::Handle<v8::Value> GetDetails(const v8::Arguments& args) {
return GetDetailsForFrameImpl(WebFrame::frameForCurrentContext());
}
static v8::Handle<v8::Value> GetDetailsForFrame(
const v8::Arguments& args) {
if (!CheckAccessToAppDetails())
return v8::Undefined();
if (args.Length() < 0)
return v8::ThrowException(v8::String::New("Not enough arguments."));
if (!args[0]->IsObject()) {
return v8::ThrowException(
v8::String::New("Argument 0 must be an object."));
}
v8::Local<v8::Context> context =
v8::Local<v8::Object>::Cast(args[0])->CreationContext();
CHECK(!context.IsEmpty());
WebFrame* target_frame = WebFrame::frameForContext(context);
if (!target_frame) {
return v8::ThrowException(
v8::String::New("Could not find frame for specified object."));
}
return GetDetailsForFrameImpl(target_frame);
}
static v8::Handle<v8::Value> GetDetailsForFrameImpl(const WebFrame* frame) {
const ::Extension* extension =
extension_dispatcher_->extensions()->GetByURL(frame->document().url());
if (!extension)
return v8::Null();
scoped_ptr<DictionaryValue> manifest_copy(
extension->manifest_value()->DeepCopy());
manifest_copy->SetString("id", extension->id());
V8ValueConverter converter;
return converter.ToV8Value(manifest_copy.get(),
frame->mainWorldScriptContext());
}
static ExtensionDispatcher* extension_dispatcher_;
};
ExtensionDispatcher* ChromeAppExtensionWrapper::extension_dispatcher_;
v8::Extension* ChromeAppExtension::Get(
ExtensionDispatcher* extension_dispatcher) {
return new ChromeAppExtensionWrapper(extension_dispatcher);
}
} // namespace extensions_v8
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