1 /* 2 * Copyright (C) 2017 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 21 #include <selinux/android.h> 22 #include <selinux/avc.h> 23 24 namespace android { 25 26 class AccessControl { 27 public: 28 AccessControl(); 29 30 struct CallingContext { 31 bool sidPresent; 32 std::string sid; 33 pid_t pid; 34 }; 35 static CallingContext getCallingContext(pid_t sourcePid); 36 37 bool canAdd(const std::string& fqName, const CallingContext& callingContext); 38 bool canGet(const std::string& fqName, const CallingContext& callingContext); 39 bool canList(const CallingContext& callingContext); 40 41 private: 42 43 bool checkPermission(const CallingContext& source, const char *targetContext, const char *perm, const char *interface); 44 bool checkPermission(const CallingContext& source, const char *perm, const char *interface); 45 46 static int auditCallback(void *data, security_class_t cls, char *buf, size_t len); 47 48 char* mSeContext; 49 struct selabel_handle* mSeHandle; 50 union selinux_callback mSeCallbacks; 51 }; 52 53 } // namespace android 54