Communicate ExtensionSettings policy to renderers

extensions/common/extension_messages.h

Index: extensions/common/extension_messages.h
diff --git a/extensions/common/extension_messages.h b/extensions/common/extension_messages.h
index e2a9c9172b0807f617548139fcf39486540a8ebb..6860ce33b02aec529549f1b0828de77363af9132 100644
--- a/extensions/common/extension_messages.h
+++ b/extensions/common/extension_messages.h
@@ -258,6 +258,27 @@ typedef std::map<std::string, std::string> SubstitutionMap;
 // Map of extensions IDs to the executing script paths.
 typedef std::map<std::string, std::set<std::string> > ExecutingScriptsMap;
 
+// Define hosts extension may or may not interact with. This is used as part of
+// the ExtensionSetitngs policy. Since there is no limit to the amount of
+// URLPatterns in a URLPatternSet we're using shared memory. This object
+// includes functions to pickle/unpickle and allocate shared memory as this is
+// used from various parts in the code.
+struct ExtensionMsg_RuntimeBlockedAllowedHostsStruct {
+  ExtensionMsg_RuntimeBlockedAllowedHostsStruct();
+  explicit ExtensionMsg_RuntimeBlockedAllowedHostsStruct(
+      const extensions::URLPatternSet& runtime_blocked_hosts,
+      const extensions::URLPatternSet& runtime_allowed_hosts,
+      const base::ProcessHandle host);
+  ExtensionMsg_RuntimeBlockedAllowedHostsStruct(
+      const ExtensionMsg_RuntimeBlockedAllowedHostsStruct& other);
+  ~ExtensionMsg_RuntimeBlockedAllowedHostsStruct();
+
+  void Unpickle(extensions::URLPatternSet* runtime_blocked_hosts,
+                extensions::URLPatternSet* runtime_allowed_hosts) const;
+
+  base::SharedMemoryHandle hosts;
+};
+
 struct ExtensionMsg_PermissionSetStruct {
   ExtensionMsg_PermissionSetStruct();
   explicit ExtensionMsg_PermissionSetStruct(
@@ -278,7 +299,8 @@ struct ExtensionMsg_Loaded_Params {
   ExtensionMsg_Loaded_Params();
   ~ExtensionMsg_Loaded_Params();
   ExtensionMsg_Loaded_Params(const extensions::Extension* extension,
-                             bool include_tab_permissions);
+                             bool include_tab_permissions,
+                             const base::ProcessHandle handle);
   ExtensionMsg_Loaded_Params(const ExtensionMsg_Loaded_Params& other);
 
   // Creates a new extension from the data in this object.
@@ -300,6 +322,15 @@ struct ExtensionMsg_Loaded_Params {
   ExtensionMsg_PermissionSetStruct withheld_permissions;
   std::map<int, ExtensionMsg_PermissionSetStruct> tab_specific_permissions;
 
+  // Contians URLPatternSets defining which URLs an extension may not interact
+  // with by policy. This is mapped to shared memory to deal with large lists.
+  ExtensionMsg_RuntimeBlockedAllowedHostsStruct hosts;
+
+  // If the extension uses the default list of blocked / allowed URLs. If false,
+  // then the 'hosts' struct in this struct must be populated with a valid
+  // shared memory handle.
+  bool is_default_runtime_blocked_allowed_hosts;
+
   // We keep this separate so that it can be used in logging.
   std::string id;
 
@@ -384,6 +415,17 @@ struct ParamTraits<HostID> {
 };
 
 template <>
+struct ParamTraits<ExtensionMsg_RuntimeBlockedAllowedHostsStruct> {
+  typedef ExtensionMsg_RuntimeBlockedAllowedHostsStruct param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
+  static void Write(base::Pickle* m, const param_type& p);
+  static bool Read(const base::Pickle* m,
+                   base::PickleIterator* iter,
+                   param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct ParamTraits<ExtensionMsg_PermissionSetStruct> {
   typedef ExtensionMsg_PermissionSetStruct param_type;
   static void GetSize(base::PickleSizer* s, const param_type& p);
@@ -423,6 +465,19 @@ IPC_STRUCT_BEGIN(ExtensionMsg_UpdatePermissions_Params)
   IPC_STRUCT_MEMBER(ExtensionMsg_PermissionSetStruct, withheld_permissions)
 IPC_STRUCT_END()
 
+// Parameters structure for ExtensionMsg_UpdateAllowedAndBlockedHosts.
+IPC_STRUCT_BEGIN(ExtensionMsg_UpdateAllowedAndBlockedHosts_Params)
+  IPC_STRUCT_MEMBER(std::string, extension_id)
+  IPC_STRUCT_MEMBER(ExtensionMsg_RuntimeBlockedAllowedHostsStruct, hosts)
+  IPC_STRUCT_MEMBER(bool, is_default)
+IPC_STRUCT_END()
+
+// Parameters structure for ExtensionMsg_UpdateDefaultAllowedAndBlockedHosts.
+IPC_STRUCT_BEGIN(ExtensionMsg_UpdateDefaultAllowedAndBlockedHosts_Params)
+  IPC_STRUCT_MEMBER(base::SharedMemoryHandle, default_runtime_blocked_hosts)
+  IPC_STRUCT_MEMBER(base::SharedMemoryHandle, default_runtime_allowed_hosts)
+IPC_STRUCT_END()
+
 // Messages sent from the browser to the renderer:
 
 // The browser sends this message in response to all extension api calls. The
@@ -521,6 +576,14 @@ IPC_MESSAGE_ROUTED1(ExtensionMsg_SetTabId,
 IPC_MESSAGE_CONTROL1(ExtensionMsg_UpdatePermissions,
                      ExtensionMsg_UpdatePermissions_Params)
 
+// Tell the renderer to update an extension's runtime_blocked_hosts set.
+IPC_MESSAGE_CONTROL1(ExtensionMsg_UpdateAllowedAndBlockedHosts,
+                     ExtensionMsg_UpdateAllowedAndBlockedHosts_Params)
+
+// Tell the renderer to update an extension's runtime_blocked_hosts set.
+IPC_MESSAGE_CONTROL1(ExtensionMsg_UpdateDefaultAllowedAndBlockedHosts,
+                     ExtensionMsg_RuntimeBlockedAllowedHostsStruct)
+
 // Tell the render view about new tab-specific permissions for an extension.
 IPC_MESSAGE_CONTROL5(ExtensionMsg_UpdateTabSpecificPermissions,
                      GURL /* url */,