Add an experimental permissions API for extensions.

chrome/common/extensions/extension_messages.h

 // 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.
 
 // IPC messages for extensions.
 // Multiply-included message file, hence no include guard.
 
 #include "base/shared_memory.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_permission_set.h"
 #include "chrome/common/extensions/url_pattern.h"
 #include "chrome/common/extensions/url_pattern_set.h"
 #include "chrome/common/web_apps.h"
 #include "content/common/view_types.h"
 #include "ipc/ipc_message_macros.h"
 
 #define IPC_MESSAGE_START ExtensionMsgStart
 
 IPC_ENUM_TRAITS(ViewType::Type)
 
@@ skipping 62 matching lines @@
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_MESSAGES_H_
 
 // IPC_MESSAGE macros choke on extra , in the std::map, when expanding. We need
 // to typedef it to avoid that.
 // Substitution map for l10n messages.
 typedef std::map<std::string, std::string> SubstitutionMap;
 
 struct ExtensionMsg_Loaded_Params {
   ExtensionMsg_Loaded_Params();
   ~ExtensionMsg_Loaded_Params();
-  explicit ExtensionMsg_Loaded_Params(const Extension* extension);
+  explicit ExtensionMsg_Loaded_Params(
+      const Extension* extension,
+      const ExtensionPermissionSet* active_permissions);
 
   // A copy constructor is needed because this structure can end up getting
   // copied inside the IPC machinery on gcc <= 4.2.
   ExtensionMsg_Loaded_Params(const ExtensionMsg_Loaded_Params& other);
 
   // Creates a new extension from the data in this object.
   scoped_refptr<Extension> ConvertToExtension() const;
 
+  // Passes ownership to the caller.
+  const ExtensionPermissionSet* GetActivePermissions() const;
+
   // The subset of the extension manifest data we send to renderers.
   scoped_ptr<DictionaryValue> manifest;
 
   // The location the extension was installed from.
   Extension::Location location;
 
   // The path the extension was loaded from. This is used in the renderer only
   // to generate the extension ID for extensions that are loaded unpacked.
   FilePath path;
 
+  // The extension's current active permissions.
+  ExtensionAPIPermissionSet apis;
+  URLPatternSet explicit_hosts;
+  URLPatternSet scriptable_hosts;
+
   // We keep this separate so that it can be used in logging.
   std::string id;
 
   // Send creation flags so extension is initialized identically.
   int creation_flags;
 };
 
 namespace IPC {
 
 template <>
 struct ParamTraits<URLPattern> {
   typedef URLPattern param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 template <>
 struct ParamTraits<URLPatternSet> {
   typedef URLPatternSet param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 template <>
+struct ParamTraits<ExtensionAPIPermission::ID> {
+  typedef ExtensionAPIPermission::ID param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct ParamTraits<ExtensionMsg_Loaded_Params> {
   typedef ExtensionMsg_Loaded_Params param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_MESSAGES_H_
@@ skipping 59 matching lines @@
 
 // Requests application info for the page. The renderer responds back with
 // ExtensionHostMsg_DidGetApplicationInfo.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_GetApplicationInfo,
                     int32 /*page_id*/)
 
 // Tell the renderer which browser window it's being attached to.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_UpdateBrowserWindowId,
                     int /* id of browser window */)
 
+// Tell the renderer to update an extension's permission set.
+IPC_MESSAGE_CONTROL4(ExtensionMsg_UpdatePermissions,
+                     std::string /* extension_id*/,
+                     ExtensionAPIPermissionSet,
+                     URLPatternSet,
+                     URLPatternSet)
+
 // Tell the renderer which type this view is.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_NotifyRenderViewType,
                     ViewType::Type /* view_type */)
 
 // Messages sent from the renderer to the browser.
 
 // A renderer sends this message when an extension process starts an API
 // request. The browser will always respond with a ExtensionMsg_Response.
 IPC_MESSAGE_ROUTED1(ExtensionHostMsg_Request,
                     ExtensionHostMsg_Request_Params)
@@ skipping 57 matching lines @@
                     bool /* whether the script ran successfully */,
                     std::string /* error message */)
 
 IPC_MESSAGE_ROUTED2(ExtensionHostMsg_DidGetApplicationInfo,
                     int32 /* page_id */,
                     WebApplicationInfo)
 
 // Sent by the renderer to implement chrome.app.installApplication().
 IPC_MESSAGE_ROUTED1(ExtensionHostMsg_InstallApplication,
                     WebApplicationInfo)