api_permission.cc revision c5cede9ae108bb15f6b7a8aea21c7e1fefa2834c 
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/api_permission.h"
6
7#include "ui/base/l10n/l10n_util.h"
8
9namespace {
10
11using extensions::APIPermission;
12using extensions::APIPermissionInfo;
13using extensions::PermissionMessage;
14using extensions::PermissionMessages;
15
16class SimpleAPIPermission : public APIPermission {
17 public:
18  explicit SimpleAPIPermission(const APIPermissionInfo* permission)
19    : APIPermission(permission) { }
20
21  virtual ~SimpleAPIPermission() { }
22
23  virtual bool HasMessages() const OVERRIDE {
24    return info()->message_id() > PermissionMessage::kNone;
25  }
26
27  virtual PermissionMessages GetMessages() const OVERRIDE {
28    DCHECK(HasMessages());
29    PermissionMessages result;
30    result.push_back(GetMessage_());
31    return result;
32  }
33
34  virtual bool Check(
35      const APIPermission::CheckParam* param) const OVERRIDE {
36    return !param;
37  }
38
39  virtual bool Contains(const APIPermission* rhs) const OVERRIDE {
40    CHECK_EQ(info(), rhs->info());
41    return true;
42  }
43
44  virtual bool Equal(const APIPermission* rhs) const OVERRIDE {
45    if (this != rhs)
46      CHECK_EQ(info(), rhs->info());
47    return true;
48  }
49
50  virtual bool FromValue(
51      const base::Value* value,
52      std::string* /*error*/,
53      std::vector<std::string>* /*unhandled_permissions*/) OVERRIDE {
54    return (value == NULL);
55  }
56
57  virtual scoped_ptr<base::Value> ToValue() const OVERRIDE {
58    return scoped_ptr<base::Value>();
59  }
60
61  virtual APIPermission* Clone() const OVERRIDE {
62    return new SimpleAPIPermission(info());
63  }
64
65  virtual APIPermission* Diff(const APIPermission* rhs) const OVERRIDE {
66    CHECK_EQ(info(), rhs->info());
67    return NULL;
68  }
69
70  virtual APIPermission* Union(const APIPermission* rhs) const OVERRIDE {
71    CHECK_EQ(info(), rhs->info());
72    return new SimpleAPIPermission(info());
73  }
74
75  virtual APIPermission* Intersect(const APIPermission* rhs) const OVERRIDE {
76    CHECK_EQ(info(), rhs->info());
77    return new SimpleAPIPermission(info());
78  }
79
80  virtual void Write(IPC::Message* m) const OVERRIDE { }
81
82  virtual bool Read(const IPC::Message* m, PickleIterator* iter) OVERRIDE {
83    return true;
84  }
85
86  virtual void Log(std::string* log) const OVERRIDE { }
87};
88
89}  // namespace
90
91namespace extensions {
92
93APIPermission::APIPermission(const APIPermissionInfo* info)
94  : info_(info) {
95  DCHECK(info_);
96}
97
98APIPermission::~APIPermission() { }
99
100APIPermission::ID APIPermission::id() const {
101  return info()->id();
102}
103
104const char* APIPermission::name() const {
105  return info()->name();
106}
107
108PermissionMessage APIPermission::GetMessage_() const {
109  return info()->GetMessage_();
110}
111
112//
113// APIPermissionInfo
114//
115
116APIPermissionInfo::APIPermissionInfo(
117    APIPermission::ID id,
118    const char* name,
119    int l10n_message_id,
120    PermissionMessage::ID message_id,
121    int flags,
122    APIPermissionConstructor api_permission_constructor)
123    : id_(id),
124      name_(name),
125      flags_(flags),
126      l10n_message_id_(l10n_message_id),
127      message_id_(message_id),
128      api_permission_constructor_(api_permission_constructor) { }
129
130
131APIPermissionInfo::~APIPermissionInfo() { }
132
133APIPermission* APIPermissionInfo::CreateAPIPermission() const {
134  return api_permission_constructor_ ?
135    api_permission_constructor_(this) : new SimpleAPIPermission(this);
136}
137
138PermissionMessage APIPermissionInfo::GetMessage_() const {
139  return PermissionMessage(
140      message_id_, l10n_util::GetStringUTF16(l10n_message_id_));
141}
142
143}  // namespace extensions
144