extensions/common/permissions/permissions_info.cc

   1 // Copyright 2013 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/permissions/permissions_info.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "base/logging.h"
   9 #include "base/stl_util.h"
  10 #include "base/strings/string_util.h"
  11 #include "extensions/common/extensions_client.h"
  12
  13 namespace extensions {
  14
  15 static base::LazyInstance<PermissionsInfo> g_permissions_info =
  16     LAZY_INSTANCE_INITIALIZER;
  17
  18 // static
  19 PermissionsInfo* PermissionsInfo::GetInstance() {
  20   return g_permissions_info.Pointer();
  21 }
  22
  23 PermissionsInfo::~PermissionsInfo() {
  24   STLDeleteContainerPairSecondPointers(id_map_.begin(), id_map_.end());
  25 }
  26
  27 const APIPermissionInfo* PermissionsInfo::GetByID(
  28     APIPermission::ID id) const {
  29   IDMap::const_iterator i = id_map_.find(id);
  30   return (i == id_map_.end()) ? NULL : i->second;
  31 }
  32
  33 const APIPermissionInfo* PermissionsInfo::GetByName(
  34     const std::string& name) const {
  35   NameMap::const_iterator i = name_map_.find(name);
  36   return (i == name_map_.end()) ? NULL : i->second;
  37 }
  38
  39 APIPermissionSet PermissionsInfo::GetAll() const {
  40   APIPermissionSet permissions;
  41   for (IDMap::const_iterator i = id_map_.begin(); i != id_map_.end(); ++i)
  42     permissions.insert(i->second->id());
  43   return permissions;
  44 }
  45
  46 APIPermissionSet PermissionsInfo::GetAllByName(
  47     const std::set<std::string>& permission_names) const {
  48   APIPermissionSet permissions;
  49   for (std::set<std::string>::const_iterator i = permission_names.begin();
  50        i != permission_names.end(); ++i) {
  51     const APIPermissionInfo* permission_info = GetByName(*i);
  52     if (permission_info)
  53       permissions.insert(permission_info->id());
  54   }
  55   return permissions;
  56 }
  57
  58 bool PermissionsInfo::HasChildPermissions(const std::string& name) const {
  59   NameMap::const_iterator i = name_map_.lower_bound(name + '.');
  60   if (i == name_map_.end()) return false;
  61   return StartsWithASCII(i->first, name + '.', true);
  62 }
  63
  64 PermissionsInfo::PermissionsInfo()
  65     : hosted_app_permission_count_(0),
  66       permission_count_(0) {
  67   InitializeWithProvider(ExtensionsClient::Get()->GetPermissionsProvider());
  68 }
  69
  70 void PermissionsInfo::InitializeWithProvider(
  71     const PermissionsProvider& provider) {
  72   std::vector<APIPermissionInfo*> permissions = provider.GetAllPermissions();
  73   std::vector<PermissionsProvider::AliasInfo> aliases =
  74       provider.GetAllAliases();
  75
  76   for (size_t i = 0; i < permissions.size(); ++i)
  77     RegisterPermission(permissions[i]);
  78   for (size_t i = 0; i < aliases.size(); ++i)
  79     RegisterAlias(aliases[i].name, aliases[i].alias);
  80 }
  81
  82 void PermissionsInfo::RegisterAlias(
  83     const char* name,
  84     const char* alias) {
  85   DCHECK(ContainsKey(name_map_, name));
  86   DCHECK(!ContainsKey(name_map_, alias));
  87   name_map_[alias] = name_map_[name];
  88 }
  89
  90 void PermissionsInfo::RegisterPermission(APIPermissionInfo* permission) {
  91   DCHECK(!ContainsKey(id_map_, permission->id()));
  92   DCHECK(!ContainsKey(name_map_, permission->name()));
  93
  94   id_map_[permission->id()] = permission;
  95   name_map_[permission->name()] = permission;
  96
  97   permission_count_++;
  98 }
  99
 100 }  // namespace extensions