1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <string>
20 #include <sys/types.h>
21 
22 namespace android {
23 
24 // singleton
25 class Access {
26 public:
27     Access();
28     virtual ~Access();
29 
30     Access(const Access&) = delete;
31     Access& operator=(const Access&) = delete;
32     Access(Access&&) = delete;
33     Access& operator=(Access&&) = delete;
34 
35     struct CallingContext {
36         pid_t debugPid;
37         uid_t uid;
38         std::string sid;
39     };
40 
41     virtual CallingContext getCallingContext();
42 
43     virtual bool canFind(const CallingContext& ctx, const std::string& name);
44     virtual bool canAdd(const CallingContext& ctx, const std::string& name);
45     virtual bool canList(const CallingContext& ctx);
46 
47 private:
48     bool actionAllowed(const CallingContext& sctx, const char* tctx, const char* perm,
49             const std::string& tname);
50     bool actionAllowedFromLookup(const CallingContext& sctx, const std::string& name,
51             const char *perm);
52 
53     char* mThisProcessContext = nullptr;
54 };
55 
56 };
57