1// Copyright (c) 2012 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 "chrome/common/extensions/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
13namespace extensions {
14
15static base::LazyInstance<PermissionsInfo> g_permissions_info =
16    LAZY_INSTANCE_INITIALIZER;
17
18// static
19PermissionsInfo* PermissionsInfo::GetInstance() {
20  return g_permissions_info.Pointer();
21}
22
23PermissionsInfo::~PermissionsInfo() {
24  STLDeleteContainerPairSecondPointers(id_map_.begin(), id_map_.end());
25}
26
27const 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
33const 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
39APIPermissionSet 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
46APIPermissionSet 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
58bool 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
64PermissionsInfo::PermissionsInfo()
65    : hosted_app_permission_count_(0),
66      permission_count_(0) {
67  DCHECK(ExtensionsClient::Get());
68  InitializeWithProvider(ExtensionsClient::Get()->GetPermissionsProvider());
69}
70
71void PermissionsInfo::InitializeWithProvider(
72    const PermissionsProvider& provider) {
73  std::vector<APIPermissionInfo*> permissions = provider.GetAllPermissions();
74  std::vector<PermissionsProvider::AliasInfo> aliases =
75      provider.GetAllAliases();
76
77  for (size_t i = 0; i < permissions.size(); ++i)
78    RegisterPermission(permissions[i]);
79  for (size_t i = 0; i < aliases.size(); ++i)
80    RegisterAlias(aliases[i].name, aliases[i].alias);
81}
82
83void PermissionsInfo::RegisterAlias(
84    const char* name,
85    const char* alias) {
86  DCHECK(ContainsKey(name_map_, name));
87  DCHECK(!ContainsKey(name_map_, alias));
88  name_map_[alias] = name_map_[name];
89}
90
91void PermissionsInfo::RegisterPermission(APIPermissionInfo* permission) {
92  DCHECK(!ContainsKey(id_map_, permission->id()));
93  DCHECK(!ContainsKey(name_map_, permission->name()));
94
95  id_map_[permission->id()] = permission;
96  name_map_[permission->name()] = permission;
97
98  permission_count_++;
99}
100
101}  // namespace extensions
102