extensions/common/features/permission_feature.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "extensions/common/features/permission_feature.h"
   6
   7 #include "extensions/common/permissions/permission_set.h"
   8 #include "extensions/common/permissions/permissions_data.h"
   9
  10 namespace extensions {
  11
  12 PermissionFeature::PermissionFeature() {
  13 }
  14
  15 PermissionFeature::~PermissionFeature() {
  16 }
  17
  18 Feature::Availability PermissionFeature::IsAvailableToContext(
  19     const Extension* extension,
  20     Feature::Context context,
  21     const GURL& url,
  22     Feature::Platform platform) const {
  23   Availability availability = SimpleFeature::IsAvailableToContext(extension,
  24                                                                   context,
  25                                                                   url,
  26                                                                   platform);
  27   if (!availability.is_available())
  28     return availability;
  29
  30   if (extension && !extension->permissions_data()->HasAPIPermission(name()))
  31     return CreateAvailability(NOT_PRESENT, extension->GetType());
  32
  33   return CreateAvailability(IS_AVAILABLE);
  34 }
  35
  36 std::string PermissionFeature::Parse(const base::DictionaryValue* value) {
  37   std::string error = SimpleFeature::Parse(value);
  38   if (!error.empty())
  39     return error;
  40
  41   if (extension_types()->empty()) {
  42     return name() + ": Permission features must specify at least one " +
  43         "value for extension_types.";
  44   }
  45
  46   if (value->HasKey("contexts"))
  47     return name() + ": Permission features do not support contexts.";
  48
  49   return std::string();
  50 }
  51
  52 }  // namespace extensions