extensions/renderer/runtime_custom_bindings.cc

   1 // Copyright 2014 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 "extensions/renderer/runtime_custom_bindings.h"
   6
   7 #include "base/bind.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/values.h"
  10 #include "content/public/child/v8_value_converter.h"
  11 #include "content/public/renderer/render_frame.h"
  12 #include "extensions/common/extension.h"
  13 #include "extensions/common/extension_messages.h"
  14 #include "extensions/common/features/feature.h"
  15 #include "extensions/common/features/feature_provider.h"
  16 #include "extensions/common/manifest.h"
  17 #include "extensions/renderer/api_activity_logger.h"
  18 #include "extensions/renderer/extension_frame_helper.h"
  19 #include "extensions/renderer/script_context.h"
  20 #include "third_party/WebKit/public/web/WebDocument.h"
  21 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  22 #include "third_party/WebKit/public/web/WebView.h"
  23
  24 using content::V8ValueConverter;
  25
  26 namespace extensions {
  27
  28 RuntimeCustomBindings::RuntimeCustomBindings(ScriptContext* context)
  29     : ObjectBackedNativeHandler(context) {
  30   RouteFunction(
  31       "GetManifest",
  32       base::Bind(&RuntimeCustomBindings::GetManifest, base::Unretained(this)));
  33   RouteFunction("OpenChannelToExtension",
  34                 base::Bind(&RuntimeCustomBindings::OpenChannelToExtension,
  35                            base::Unretained(this)));
  36   RouteFunction("OpenChannelToNativeApp",
  37                 base::Bind(&RuntimeCustomBindings::OpenChannelToNativeApp,
  38                            base::Unretained(this)));
  39   RouteFunction("GetExtensionViews",
  40                 base::Bind(&RuntimeCustomBindings::GetExtensionViews,
  41                            base::Unretained(this)));
  42 }
  43
  44 RuntimeCustomBindings::~RuntimeCustomBindings() {
  45 }
  46
  47 void RuntimeCustomBindings::OpenChannelToExtension(
  48     const v8::FunctionCallbackInfo<v8::Value>& args) {
  49   // Get the current RenderFrame so that we can send a routed IPC message from
  50   // the correct source.
  51   content::RenderFrame* renderframe = context()->GetRenderFrame();
  52   if (!renderframe)
  53     return;
  54
  55   // The Javascript code should validate/fill the arguments.
  56   CHECK_EQ(args.Length(), 3);
  57   CHECK(args[0]->IsString() && args[1]->IsString() && args[2]->IsBoolean());
  58
  59   ExtensionMsg_ExternalConnectionInfo info;
  60
  61   // For messaging APIs, hosted apps should be considered a web page so hide
  62   // its extension ID.
  63   const Extension* extension = context()->extension();
  64   if (extension && !extension->is_hosted_app())
  65     info.source_id = extension->id();
  66
  67   info.target_id = *v8::String::Utf8Value(args[0]);
  68   info.source_url = context()->GetURL();
  69   std::string channel_name = *v8::String::Utf8Value(args[1]);
  70   bool include_tls_channel_id =
  71       args.Length() > 2 ? args[2]->BooleanValue() : false;
  72   int port_id = -1;
  73   renderframe->Send(new ExtensionHostMsg_OpenChannelToExtension(
  74       renderframe->GetRoutingID(), info, channel_name, include_tls_channel_id,
  75       &port_id));
  76   args.GetReturnValue().Set(static_cast<int32_t>(port_id));
  77 }
  78
  79 void RuntimeCustomBindings::OpenChannelToNativeApp(
  80     const v8::FunctionCallbackInfo<v8::Value>& args) {
  81   // Verify that the extension has permission to use native messaging.
  82   Feature::Availability availability =
  83       FeatureProvider::GetPermissionFeatures()
  84           ->GetFeature("nativeMessaging")
  85           ->IsAvailableToContext(context()->extension(),
  86                                  context()->context_type(),
  87                                  context()->GetURL());
  88   if (!availability.is_available())
  89     return;
  90
  91   content::RenderFrame* render_frame = context()->GetRenderFrame();
  92   if (!render_frame)
  93     return;
  94
  95   // The Javascript code should validate/fill the arguments.
  96   CHECK(args.Length() >= 2 && args[0]->IsString() && args[1]->IsString());
  97
  98   std::string extension_id = *v8::String::Utf8Value(args[0]);
  99   std::string native_app_name = *v8::String::Utf8Value(args[1]);
 100
 101   int port_id = -1;
 102   render_frame->Send(new ExtensionHostMsg_OpenChannelToNativeApp(
 103       render_frame->GetRoutingID(), extension_id, native_app_name, &port_id));
 104   args.GetReturnValue().Set(static_cast<int32_t>(port_id));
 105 }
 106
 107 void RuntimeCustomBindings::GetManifest(
 108     const v8::FunctionCallbackInfo<v8::Value>& args) {
 109   CHECK(context()->extension());
 110
 111   scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
 112   args.GetReturnValue().Set(converter->ToV8Value(
 113       context()->extension()->manifest()->value(), context()->v8_context()));
 114 }
 115
 116 void RuntimeCustomBindings::GetExtensionViews(
 117     const v8::FunctionCallbackInfo<v8::Value>& args) {
 118   if (args.Length() != 2)
 119     return;
 120
 121   if (!args[0]->IsInt32() || !args[1]->IsString())
 122     return;
 123
 124   // |browser_window_id| == extension_misc::kUnknownWindowId means getting
 125   // all views for the current extension.
 126   int browser_window_id = args[0]->Int32Value();
 127
 128   std::string view_type_string = *v8::String::Utf8Value(args[1]);
 129   base::StringToUpperASCII(&view_type_string);
 130   // |view_type| == VIEW_TYPE_INVALID means getting any type of
 131   // views.
 132   ViewType view_type = VIEW_TYPE_INVALID;
 133   if (view_type_string == kViewTypeBackgroundPage) {
 134     view_type = VIEW_TYPE_EXTENSION_BACKGROUND_PAGE;
 135   } else if (view_type_string == kViewTypeTabContents) {
 136     view_type = VIEW_TYPE_TAB_CONTENTS;
 137   } else if (view_type_string == kViewTypePopup) {
 138     view_type = VIEW_TYPE_EXTENSION_POPUP;
 139   } else if (view_type_string == kViewTypeExtensionDialog) {
 140     view_type = VIEW_TYPE_EXTENSION_DIALOG;
 141   } else if (view_type_string == kViewTypeAppWindow) {
 142     view_type = VIEW_TYPE_APP_WINDOW;
 143   } else if (view_type_string == kViewTypeLauncherPage) {
 144     view_type = VIEW_TYPE_LAUNCHER_PAGE;
 145   } else if (view_type_string == kViewTypePanel) {
 146     view_type = VIEW_TYPE_PANEL;
 147   } else if (view_type_string != kViewTypeAll) {
 148     return;
 149   }
 150
 151   std::string extension_id = context()->GetExtensionID();
 152   if (extension_id.empty())
 153     return;
 154
 155   std::vector<content::RenderFrame*> frames =
 156       ExtensionFrameHelper::GetExtensionFrames(extension_id, browser_window_id,
 157                                                view_type);
 158   v8::Local<v8::Array> v8_views = v8::Array::New(args.GetIsolate());
 159   int v8_index = 0;
 160   for (content::RenderFrame* frame : frames) {
 161     // We filter out iframes here. GetExtensionViews should only return the
 162     // main views, not any subframes. (Returning subframes can cause broken
 163     // behavior by treating an app window's iframe as its main frame, and maybe
 164     // other nastiness).
 165     if (frame->GetWebFrame()->top() != frame->GetWebFrame())
 166       continue;
 167
 168     v8::Local<v8::Context> context =
 169         frame->GetWebFrame()->mainWorldScriptContext();
 170     if (!context.IsEmpty()) {
 171       v8::Local<v8::Value> window = context->Global();
 172       DCHECK(!window.IsEmpty());
 173       v8_views->Set(v8::Integer::New(args.GetIsolate(), v8_index++), window);
 174     }
 175   }
 176
 177   args.GetReturnValue().Set(v8_views);
 178 }
 179
 180 }  // namespace extensions