Hook up PpapiPermissions in more places.

ppapi/proxy/interface_list.h

 // Copyright (c) 2012 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.
 
 #ifndef PPAPI_PROXY_INTERFACE_LIST_H_
 #define PPAPI_PROXY_INTERFACE_LIST_H_
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/ppapi_permissions.h"
 
 namespace ppapi {
 namespace proxy {
 
 class InterfaceList {
  public:
   InterfaceList();
   ~InterfaceList();
 
   static InterfaceList* GetInstance();
 
+  // Sets the permissions that the interface list will use to compute
+  // whether an interface is available to the current process. By default,
+  // this will be "no permissions", which will give only access to public
+  // stable interfaces via GetInterface.
+  //
+  // IMPORTANT: This is not a security boundary. Malicious plugins can bypass
+  // this check since they run in the same address space as this code in the
+  // plugin process. A real security check is required for all IPC messages.
+  // This check just allows us to return NULL for interfaces you "shouldn't" be
+  // using to keep honest plugins honest.
+  static PPAPI_PROXY_EXPORT void SetProcessGlobalPermissions(
+      const PpapiPermissions& permissions);
+
   // Looks up the ID for the given interface name. Returns API_ID_NONE if
   // the interface string is not found.
   ApiID GetIDForPPBInterface(const std::string& name) const;
   ApiID GetIDForPPPInterface(const std::string& name) const;
 
   // Looks up the factory function for the given ID. Returns NULL if not
   // supported.
   InterfaceProxy::Factory GetFactoryForID(ApiID id) const;
 
   // Returns the interface pointer for the given browser or plugin interface,
   // or NULL if it's not supported.
   const void* GetInterfaceForPPB(const std::string& name) const;
   const void* GetInterfaceForPPP(const std::string& name) const;
 
  private:
   struct InterfaceInfo {
     InterfaceInfo()
         : id(API_ID_NONE),
-          iface(NULL) {
+          iface(NULL),
+          required_permission(PERMISSION_NONE) {
     }
-    InterfaceInfo(ApiID in_id, const void* in_interface)
+    InterfaceInfo(ApiID in_id, const void* in_interface, Permission in_perm)
         : id(in_id),
-          iface(in_interface) {
+          iface(in_interface),
+          required_permission(in_perm) {
     }
 
     ApiID id;
     const void* iface;
+
+    // Permission required to return non-null for this interface. This will
+    // be checked with the value set via SetProcessGlobalPermissionBits when
+    // an interface is requested.
+    Permission required_permission;
   };
 
   typedef std::map<std::string, InterfaceInfo> NameToInterfaceInfoMap;
 
   void AddProxy(ApiID id, InterfaceProxy::Factory factory);
 
-  void AddPPB(const char* name, ApiID id, const void* iface);
+  // Permissions is the type of permission required to access the corresponding
+  // interface. Currently this must be just one unique permission (rather than
+  // a bitfield).
+  void AddPPB(const char* name, ApiID id, const void* iface,
+              Permission permission);
   void AddPPP(const char* name, ApiID id, const void* iface);
 
   // Old-style add functions. These should be removed when the rest of the
   // proxies are converted over to using the new system.
-  void AddPPB(const InterfaceProxy::Info* info);
+  void AddPPB(const InterfaceProxy::Info* info, Permission perm);
   void AddPPP(const InterfaceProxy::Info* info);
 
+  PpapiPermissions permissions_;
+
   NameToInterfaceInfoMap name_to_browser_info_;
   NameToInterfaceInfoMap name_to_plugin_info_;
 
   InterfaceProxy::Factory id_to_factory_[API_ID_COUNT];
 
   DISALLOW_COPY_AND_ASSIGN(InterfaceList);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_INTERFACE_LIST_H_