1 /* 2 * Copyright (C) 2012 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 _NETD_CONSTANTS_H 18 #define _NETD_CONSTANTS_H 19 20 #include <string> 21 #include <list> 22 #include <ifaddrs.h> 23 #include <netdb.h> 24 #include <stdarg.h> 25 26 #include <chrono> 27 28 #include <private/android_filesystem_config.h> 29 30 #include "utils/RWLock.h" 31 32 const int PROTECT_MARK = 0x1; 33 const int MAX_SYSTEM_UID = AID_APP - 1; 34 35 extern const size_t SHA256_SIZE; 36 37 extern const char * const OEM_SCRIPT_PATH; 38 extern const char * const ADD; 39 extern const char * const DEL; 40 41 enum IptablesTarget { V4, V6, V4V6 }; 42 43 int execIptablesRestore(IptablesTarget target, const std::string& commands); 44 int execIptablesRestoreWithOutput(IptablesTarget target, const std::string& commands, 45 std::string *output); 46 int execIptablesRestoreCommand(IptablesTarget target, const std::string& table, 47 const std::string& command, std::string *output); 48 bool isIfaceName(const std::string& name); 49 int parsePrefix(const char *prefix, uint8_t *family, void *address, int size, uint8_t *prefixlen); 50 void blockSigpipe(); 51 void setCloseOnExec(const char *sock); 52 53 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a))) 54 55 #define __INT_STRLEN(i) sizeof(#i) 56 #define _INT_STRLEN(i) __INT_STRLEN(i) 57 #define INT32_STRLEN _INT_STRLEN(INT32_MIN) 58 #define UINT32_STRLEN _INT_STRLEN(UINT32_MAX) 59 #define UINT32_HEX_STRLEN sizeof("0x12345678") 60 61 #define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__)) 62 63 const uid_t INVALID_UID = static_cast<uid_t>(-1); 64 65 66 struct AddrinfoDeleter { operatorAddrinfoDeleter67 void operator()(struct addrinfo* p) const { 68 if (p != nullptr) { 69 freeaddrinfo(p); 70 } 71 } 72 }; 73 74 typedef std::unique_ptr<struct addrinfo, struct AddrinfoDeleter> ScopedAddrinfo; 75 76 77 struct IfaddrsDeleter { operatorIfaddrsDeleter78 void operator()(struct ifaddrs *p) const { 79 if (p != nullptr) { 80 freeifaddrs(p); 81 } 82 } 83 }; 84 85 typedef std::unique_ptr<struct ifaddrs, struct IfaddrsDeleter> ScopedIfaddrs; 86 87 namespace android { 88 namespace net { 89 90 /** 91 * This lock exists to make NetdNativeService RPCs (which come in on multiple Binder threads) 92 * coexist with the commands in CommandListener.cpp. These are presumed not thread-safe because 93 * CommandListener has only one user (NetworkManagementService), which is connected through a 94 * FrameworkListener that passes in commands one at a time. 95 */ 96 extern android::RWLock gBigNetdLock; 97 98 } // namespace net 99 } // namespace android 100 101 #endif // _NETD_CONSTANTS_H 102