Add an experimental permissions API for extensions.

chrome/common/extensions/extension_messages.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/common/extensions/extension_messages.h"
 
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/common/common_param_traits.h"
 
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params()
     : location(Extension::INVALID) {
 }
 
 ExtensionMsg_Loaded_Params::~ExtensionMsg_Loaded_Params() {
 }
 
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params(
     const ExtensionMsg_Loaded_Params& other)
     : manifest(other.manifest->DeepCopy()),
       location(other.location),
       path(other.path),
       id(other.id) {
 }
 
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params(
-    const Extension* extension)
+    const Extension* extension,
+    const ExtensionPermissionSet* active)
     : manifest(new DictionaryValue()),
       location(extension->location()),
       path(extension->path()),
+      apis(active->apis()),
+      explicit_hosts(active->explicit_hosts()),
+      scriptable_hosts(active->scriptable_hosts()),
       id(extension->id()) {
   // As we need more bits of extension data in the renderer, add more keys to
   // this list.
   const char* kRendererExtensionKeys[] = {
     extension_manifest_keys::kPublicKey,
     extension_manifest_keys::kName,
     extension_manifest_keys::kVersion,
     extension_manifest_keys::kIcons,
     extension_manifest_keys::kPageAction,
     extension_manifest_keys::kPageActions,
@@ skipping 16 matching lines @@
 
   scoped_refptr<Extension> extension(
       Extension::Create(path, location, *manifest, Extension::NO_FLAGS,
                         &error));
   if (!extension.get())
     LOG(ERROR) << "Error deserializing extension: " << error;
 
   return extension;
 }
 
+const ExtensionPermissionSet*
+    ExtensionMsg_Loaded_Params::GetActivePermissions() const {
+  return new ExtensionPermissionSet(apis, explicit_hosts, scriptable_hosts);
+}
+
 namespace IPC {
 
 template <>
 struct ParamTraits<Extension::Location> {
   typedef Extension::Location param_type;
   static void Write(Message* m, const param_type& p) {
     int val = static_cast<int>(p);
     WriteParam(m, val);
   }
   static bool Read(const Message* m, void** iter, param_type* p) {
@@ skipping 31 matching lines @@
   LogParam(p.GetAsString(), l);
 }
 
 void ParamTraits<URLPatternSet>::Write(Message* m, const param_type& p) {
   WriteParam(m, p.patterns());
 }
 
 bool ParamTraits<URLPatternSet>::Read(const Message* m, void** iter,
                                         param_type* p) {
   std::set<URLPattern> patterns;
-  bool success =
-      ReadParam(m, iter, &patterns);
-  if (!success)
+  if (!ReadParam(m, iter, &patterns))
     return false;
 
   for (std::set<URLPattern>::iterator i = patterns.begin();
        i != patterns.end(); ++i)
     p->AddPattern(*i);
   return true;
 }
 
 void ParamTraits<URLPatternSet>::Log(const param_type& p, std::string* l) {
   LogParam(p.patterns(), l);
 }
 
+void ParamTraits<ExtensionAPIPermission::ID>::Write(
+    Message* m, const param_type& p) {
+  WriteParam(m, (int)p);

[Mihai Parparita -not on Chrome, 2011/07/21 21:18:13]

static_cast<int>(p) is the casting style preferred by the C++ style guide
(applies below too).

[jstritar, 2011/07/22 19:21:55]

Done.

+}
+
+bool ParamTraits<ExtensionAPIPermission::ID>::Read(
+    const Message* m, void** iter, param_type* p) {
+  int api_id = -2;
+  if (!ReadParam(m, iter, &api_id))
+    return false;
+
+  *p = static_cast<ExtensionAPIPermission::ID>(api_id);
+  return true;
+}
+
+void ParamTraits<ExtensionAPIPermission::ID>::Log(
+    const param_type& p, std::string* l) {
+  LogParam((int)p, l);
+}
+
 void ParamTraits<ExtensionMsg_Loaded_Params>::Write(Message* m,
                                                     const param_type& p) {
   WriteParam(m, p.location);
   WriteParam(m, p.path);
   WriteParam(m, *(p.manifest));
+  WriteParam(m, p.apis);
+  WriteParam(m, p.explicit_hosts);
+  WriteParam(m, p.scriptable_hosts);
 }
 
 bool ParamTraits<ExtensionMsg_Loaded_Params>::Read(const Message* m,
                                                    void** iter,
                                                    param_type* p) {
   p->manifest.reset(new DictionaryValue());
   return ReadParam(m, iter, &p->location) &&
          ReadParam(m, iter, &p->path) &&
-         ReadParam(m, iter, p->manifest.get());
+         ReadParam(m, iter, p->manifest.get()) &&
+         ReadParam(m, iter, &p->apis) &&
+         ReadParam(m, iter, &p->explicit_hosts) &&
+         ReadParam(m, iter, &p->scriptable_hosts);
 }
 
 void ParamTraits<ExtensionMsg_Loaded_Params>::Log(const param_type& p,
                                                   std::string* l) {
   l->append(p.id);
 }
 
 }  // namespace IPC