chrome/renderer/principals_extension_bindings.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/principals_extension_bindings.h"
   6
   7 #include "chrome/common/render_messages.h"
   8 #include "content/public/renderer/render_view.h"
   9 #include "third_party/WebKit/public/web/WebDocument.h"
  10 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  11 #include "third_party/WebKit/public/web/WebView.h"
  12 #include "v8/include/v8.h"
  13
  14 using blink::WebLocalFrame;
  15 using blink::WebView;
  16 using content::RenderView;
  17
  18 namespace {
  19
  20 class PrincipalsExtensionWrapper : public v8::Extension {
  21  public:
  22   PrincipalsExtensionWrapper();
  23
  24  private:
  25   // v8::Extension overrides.
  26   v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
  27       v8::Isolate* isolate,
  28       v8::Handle<v8::String> name) override;
  29
  30   static RenderView* GetRenderView();
  31
  32   static void GetManagedAccounts(
  33       const v8::FunctionCallbackInfo<v8::Value>& args);
  34   static void ShowBrowserAccountManagementUI(
  35       const v8::FunctionCallbackInfo<v8::Value>& args);
  36
  37   DISALLOW_COPY_AND_ASSIGN(PrincipalsExtensionWrapper);
  38 };
  39
  40 const char kPrincipalsExtensionName[] = "v8/Principals";
  41 const char kPrincipalsExtensionCode[] =
  42     "var chrome;"
  43     "if (!chrome)"
  44     "  chrome = {};"
  45     "if (!chrome.principals)"
  46     "  chrome.principals = {};"
  47     "chrome.principals.getManagedAccounts = function() {"
  48     "  native function NativeGetManagedAccounts();"
  49     "  return NativeGetManagedAccounts();"
  50     "};"
  51     "chrome.principals.showBrowserAccountManagementUI = function() {"
  52     "  native function ShowBrowserAccountManagementUI();"
  53     "  ShowBrowserAccountManagementUI();"
  54     "};";
  55
  56 PrincipalsExtensionWrapper::PrincipalsExtensionWrapper() : v8::Extension(
  57     kPrincipalsExtensionName, kPrincipalsExtensionCode) {}
  58
  59 v8::Handle<v8::FunctionTemplate>
  60     PrincipalsExtensionWrapper::GetNativeFunctionTemplate(
  61         v8::Isolate* isolate, v8::Handle<v8::String> name) {
  62   if (name->Equals(v8::String::NewFromUtf8(
  63       isolate, "NativeGetManagedAccounts"))) {
  64     return v8::FunctionTemplate::New(isolate, GetManagedAccounts);
  65   } else if (name->Equals(v8::String::NewFromUtf8(
  66       isolate, "ShowBrowserAccountManagementUI"))) {
  67     return v8::FunctionTemplate::New(isolate, ShowBrowserAccountManagementUI);
  68   }
  69   return v8::Handle<v8::FunctionTemplate>();
  70 }
  71
  72 void PrincipalsExtensionWrapper::GetManagedAccounts(
  73     const v8::FunctionCallbackInfo<v8::Value>& args) {
  74   RenderView* render_view = GetRenderView();
  75   if (!render_view) {
  76     args.GetReturnValue().SetNull();
  77     return;
  78   }
  79
  80   std::vector<std::string> accounts;
  81   render_view->Send(new ChromeViewHostMsg_GetManagedAccounts(
  82       WebLocalFrame::frameForCurrentContext()->document().url(),
  83       &accounts));
  84
  85   v8::Isolate* isolate = args.GetIsolate();
  86   v8::Local<v8::Array> v8_result = v8::Array::New(isolate);
  87   int v8_index = 0;
  88   for (std::vector<std::string>::const_iterator it = accounts.begin();
  89        it != accounts.end(); ++it) {
  90     v8_result->Set(v8::Integer::New(isolate, v8_index++),
  91         v8::String::NewFromUtf8(isolate, it->c_str(),
  92                                 v8::String::kNormalString, it->length()));
  93   }
  94   args.GetReturnValue().Set(v8_result);
  95 }
  96
  97 void PrincipalsExtensionWrapper::ShowBrowserAccountManagementUI(
  98     const v8::FunctionCallbackInfo<v8::Value>& args) {
  99   // TODO(guohui): need to figure out how to prevent abuse.
 100   RenderView* render_view = GetRenderView();
 101   if (!render_view) return;
 102
 103   render_view->Send(new ChromeViewHostMsg_ShowBrowserAccountManagementUI());
 104 }
 105
 106 RenderView* PrincipalsExtensionWrapper::GetRenderView() {
 107   WebLocalFrame* webframe = WebLocalFrame::frameForCurrentContext();
 108   DCHECK(webframe) << "There should be an active frame since we just got "
 109       "a native function called.";
 110   if (!webframe)
 111     return NULL;
 112
 113   WebView* webview = webframe->view();
 114   if (!webview)  // can happen during closing
 115     return NULL;
 116
 117   return RenderView::FromWebView(webview);
 118 }
 119
 120 }  // namespace
 121
 122 namespace extensions_v8 {
 123
 124 v8::Extension* PrincipalsExtension::Get() {
 125   return new PrincipalsExtensionWrapper();
 126 }
 127
 128 }  // namespace extensions_v8