1 /* 2 * Copyright (C) 2014 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_INCLUDE_FWMARK_COMMAND_H 18 #define NETD_INCLUDE_FWMARK_COMMAND_H 19 20 #include <arpa/inet.h> 21 #include <sys/socket.h> 22 #include <sys/types.h> 23 24 // Additional information sent with ON_CONNECT_COMPLETE command 25 struct FwmarkConnectInfo { 26 int error; 27 unsigned latencyMs; 28 union { 29 sockaddr s; 30 sockaddr_in sin; 31 sockaddr_in6 sin6; 32 } addr; 33 FwmarkConnectInfoFwmarkConnectInfo34 FwmarkConnectInfo() {} 35 FwmarkConnectInfoFwmarkConnectInfo36 FwmarkConnectInfo(const int connectErrno, const unsigned latency, const sockaddr* saddr) { 37 error = connectErrno; 38 latencyMs = latency; 39 if (saddr->sa_family == AF_INET) { 40 addr.sin = *((struct sockaddr_in*) saddr); 41 } else if (saddr->sa_family == AF_INET6) { 42 addr.sin6 = *((struct sockaddr_in6*) saddr); 43 } else { 44 // Cannot happen because we only call this if shouldSetFwmark returns true, and thus 45 // the address family is one we understand. 46 addr.s.sa_family = AF_UNSPEC; 47 } 48 } 49 }; 50 51 // Commands sent from clients to the fwmark server to mark sockets (i.e., set their SO_MARK). 52 // ON_CONNECT_COMPLETE command should be accompanied by FwmarkConnectInfo which should contain 53 // info about that connect attempt 54 struct FwmarkCommand { 55 enum { 56 ON_ACCEPT, 57 ON_CONNECT, 58 SELECT_NETWORK, 59 PROTECT_FROM_VPN, 60 SELECT_FOR_USER, 61 QUERY_USER_ACCESS, 62 ON_CONNECT_COMPLETE, 63 } cmdId; 64 unsigned netId; // used only in the SELECT_NETWORK command; ignored otherwise. 65 uid_t uid; // used only in the SELECT_FOR_USER and QUERY_USER_ACCESS commands; 66 // ignored otherwise. 67 }; 68 69 #endif // NETD_INCLUDE_FWMARK_COMMAND_H 70