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 32const int PROTECT_MARK = 0x1; 33const int MAX_SYSTEM_UID = AID_APP - 1; 34 35extern const char * const IPTABLES_PATH; 36extern const char * const IP6TABLES_PATH; 37extern const char * const IP_PATH; 38extern const char * const TC_PATH; 39extern const char * const OEM_SCRIPT_PATH; 40extern const char * const ADD; 41extern const char * const DEL; 42 43enum IptablesTarget { V4, V6, V4V6 }; 44 45int execIptables(IptablesTarget target, ...); 46int execIptablesSilently(IptablesTarget target, ...); 47int execIptablesRestore(IptablesTarget target, const std::string& commands); 48bool isIfaceName(const char *name); 49int parsePrefix(const char *prefix, uint8_t *family, void *address, int size, uint8_t *prefixlen); 50 51#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a))) 52 53#define __INT_STRLEN(i) sizeof(#i) 54#define _INT_STRLEN(i) __INT_STRLEN(i) 55#define INT32_STRLEN _INT_STRLEN(INT32_MIN) 56#define UINT32_STRLEN _INT_STRLEN(UINT32_MAX) 57#define UINT32_HEX_STRLEN sizeof("0x12345678") 58 59#define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__)) 60 61const uid_t INVALID_UID = static_cast<uid_t>(-1); 62 63 64struct AddrinfoDeleter { 65 void operator()(struct addrinfo* p) const { 66 if (p != nullptr) { 67 freeaddrinfo(p); 68 } 69 } 70}; 71 72typedef std::unique_ptr<struct addrinfo, struct AddrinfoDeleter> ScopedAddrinfo; 73 74 75struct IfaddrsDeleter { 76 void operator()(struct ifaddrs *p) const { 77 if (p != nullptr) { 78 freeifaddrs(p); 79 } 80 } 81}; 82 83typedef std::unique_ptr<struct ifaddrs, struct IfaddrsDeleter> ScopedIfaddrs; 84 85namespace android { 86namespace net { 87 88/** 89 * This lock exists to make NetdNativeService RPCs (which come in on multiple Binder threads) 90 * coexist with the commands in CommandListener.cpp. These are presumed not thread-safe because 91 * CommandListener has only one user (NetworkManagementService), which is connected through a 92 * FrameworkListener that passes in commands one at a time. 93 */ 94extern android::RWLock gBigNetdLock; 95 96} // namespace net 97} // namespace android 98 99#endif // _NETD_CONSTANTS_H 100