Add IPCs to check web copy/cut/paste for extensions with the appropriate permission bit.

chrome/browser/renderer_host/chrome_render_message_filter.cc

 // 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/browser/renderer_host/chrome_render_message_filter.h"
 
 #include "base/file_path.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/nacl_host/nacl_process_host.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_message_bundle.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
+#include "content/common/url_constants.h"
+#include "googleurl/src/gurl.h"
 
 #if defined(USE_TCMALLOC)
 #include "chrome/browser/browser_about_handler.h"
 #endif
 
 using WebKit::WebCache;
 
 ChromeRenderMessageFilter::ChromeRenderMessageFilter(
     int render_process_id,
     Profile* profile,
@@ skipping 30 matching lines @@
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_AddListener, OnExtensionAddListener)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveListener,
                         OnExtensionRemoveListener)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_CloseChannel, OnExtensionCloseChannel)
 #if defined(USE_TCMALLOC)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RendererTcmalloc, OnRendererTcmalloc)
 #endif
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetPluginPolicies,
                         OnGetPluginPolicies)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AllowDatabase, OnAllowDatabase)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_CanTriggerClipboardRead,
+                        OnCanTriggerClipboardRead)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_CanTriggerClipboardWrite,
+                        OnCanTriggerClipboardWrite)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void ChromeRenderMessageFilter::OnDestruct() const {
   // Destroy on the UI thread because we contain a PrefMember.
   BrowserThread::DeleteOnUIThread::Destruct(this);
 }
@@ skipping 218 matching lines @@
                                                 bool* result) {
   GURL url(origin_url);
   ContentSetting content_setting =
       host_content_settings_map_->GetContentSetting(
           url, CONTENT_SETTINGS_TYPE_COOKIES, "");
   DCHECK((content_setting == CONTENT_SETTING_ALLOW) ||
          (content_setting == CONTENT_SETTING_BLOCK) ||
          (content_setting == CONTENT_SETTING_SESSION_ONLY));
   *result = content_setting != CONTENT_SETTING_BLOCK;
 }
+
+void ChromeRenderMessageFilter::OnCanTriggerClipboardRead(const GURL& url,
+                                                          bool* allowed) {
+  ChromeURLRequestContext* context = static_cast<ChromeURLRequestContext*>(
+      request_context_->GetURLRequestContext());
+  *allowed = context->extension_info_map()->CheckURLAccessToExtensionPermission(
+      url, Extension::kClipboardReadPermission);
+}
+
+void ChromeRenderMessageFilter::OnCanTriggerClipboardWrite(const GURL& url,
+                                                           bool* allowed) {
+  ChromeURLRequestContext* context = static_cast<ChromeURLRequestContext*>(
+      request_context_->GetURLRequestContext());
+  // Since all extensions could historically write to the clipboard, preserve it
+  // for compatibility.
+  *allowed = url.SchemeIs(chrome::kExtensionScheme) ||
+      context->extension_info_map()->CheckURLAccessToExtensionPermission(
+          url, Extension::kClipboardWritePermission);
+}