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      1 /*
      2  * Copyright (C) 2016 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 #ifndef KEYSTORE_PERMISSIONS_H_
     18 #define KEYSTORE_PERMISSIONS_H_
     19 
     20 #include <unistd.h>
     21 
     22 /* Here are the permissions, actions, users, and the main function. */
     23 enum perm_t {
     24     P_GET_STATE = 1 << 0,
     25     P_GET = 1 << 1,
     26     P_INSERT = 1 << 2,
     27     P_DELETE = 1 << 3,
     28     P_EXIST = 1 << 4,
     29     P_LIST = 1 << 5,
     30     P_RESET = 1 << 6,
     31     P_PASSWORD = 1 << 7,
     32     P_LOCK = 1 << 8,
     33     P_UNLOCK = 1 << 9,
     34     P_IS_EMPTY = 1 << 10,
     35     P_SIGN = 1 << 11,
     36     P_VERIFY = 1 << 12,
     37     P_GRANT = 1 << 13,
     38     P_DUPLICATE = 1 << 14,
     39     P_CLEAR_UID = 1 << 15,
     40     P_ADD_AUTH = 1 << 16,
     41     P_USER_CHANGED = 1 << 17,
     42 };
     43 
     44 const char* get_perm_label(perm_t perm);
     45 
     46 /**
     47  * Returns the UID that the callingUid should act as. This is here for
     48  * legacy support of the WiFi and VPN systems and should be removed
     49  * when WiFi can operate in its own namespace.
     50  */
     51 uid_t get_keystore_euid(uid_t uid);
     52 
     53 bool has_permission(uid_t uid, perm_t perm, pid_t spid);
     54 
     55 /**
     56  * Returns true if the callingUid is allowed to interact in the targetUid's
     57  * namespace.
     58  */
     59 bool is_granted_to(uid_t callingUid, uid_t targetUid);
     60 
     61 int configure_selinux();
     62 
     63 #endif  // KEYSTORE_PERMISSIONS_H_
     64