com_android_server_connectivity_Vpn.cpp revision 3663227a8be5c6c05bf4adadc378fd69b7ae814c
1ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh/* 2ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * Copyright (C) 2011 The Android Open Source Project 3ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * 4ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * Licensed under the Apache License, Version 2.0 (the "License"); 5ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * you may not use this file except in compliance with the License. 6ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * You may obtain a copy of the License at 7ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * 8ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * http://www.apache.org/licenses/LICENSE-2.0 9ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * 10ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * Unless required by applicable law or agreed to in writing, software 11ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * distributed under the License is distributed on an "AS IS" BASIS, 12ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * See the License for the specific language governing permissions and 14ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh * limitations under the License. 15ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh */ 16ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 17ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define LOG_NDEBUG 0 18ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 19ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define LOG_TAG "VpnJni" 20ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <cutils/log.h> 21ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <cutils/properties.h> 22ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 23ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <stdio.h> 24ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <string.h> 25ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <sys/ioctl.h> 26ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <sys/types.h> 27ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <sys/stat.h> 28ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <sys/socket.h> 29ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <netinet/in.h> 30ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <arpa/inet.h> 31ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <errno.h> 32ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <fcntl.h> 33ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 34ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/if.h> 35ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/if_tun.h> 36ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/route.h> 37ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/ipv6_route.h> 38ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 39ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include "jni.h" 40ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include "JNIHelp.h" 41ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 42ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehnamespace android 43ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 44ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 45ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic inline in_addr_t *as_in_addr(sockaddr *sa) { 46ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return &((sockaddr_in *)sa)->sin_addr.s_addr; 47ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 48ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 49ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic inline in_addr_t *as_in_addr(sockaddr_storage *ss) { 50ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return &((sockaddr_in *)ss)->sin_addr.s_addr; 51ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 52ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 53ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic inline in6_addr *as_in6_addr(sockaddr_storage *ss) { 54ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return &((sockaddr_in6 *)&ss)->sin6_addr; 55ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 56ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 57ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 58ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 59ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define SYSTEM_ERROR -1 60ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define BAD_ARGUMENT -2 61ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 623663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yehstatic int create_interface(int mtu, char *name, int *index) 63ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 64ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int tun = open("/dev/tun", O_RDWR); 65ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet4 = socket(AF_INET, SOCK_DGRAM, 0); 66ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 67ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 68ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 69ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 70ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Allocate interface. 71ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = IFF_TUN; 72ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(tun, TUNSETIFF, &ifr4)) { 73ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot allocate TUN: %s", strerror(errno)); 74ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 75ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 76ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 77ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Activate interface. 78ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = IFF_UP; 79ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4)) { 80ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot activate %s: %s", ifr4.ifr_name, strerror(errno)); 81ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 82ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 83ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 843663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh // Set MTU if it is specified. 853663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh ifr4.ifr_mtu = mtu; 863663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh if (mtu > 0 && ioctl(inet4, SIOCSIFMTU, &ifr4)) { 873663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh LOGE("Cannot set MTU on %s: %s", ifr4.ifr_name, strerror(errno)); 883663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh goto error; 893663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh } 903663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh 91ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Get interface index. 92ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOGIFINDEX, &ifr4)) { 93ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot get index of %s: %s", ifr4.ifr_name, strerror(errno)); 94ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 95ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 96ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 97ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strcpy(name, ifr4.ifr_name); 98ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh *index = ifr4.ifr_ifindex; 99ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 100ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return tun; 101ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 102ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeherror: 103ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(tun); 104ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 105ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 106ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 107ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 108ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int set_addresses(const char *name, int index, const char *addresses) 109ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 110ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet4 = socket(AF_INET, SOCK_DGRAM, 0); 111ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet6 = socket(AF_INET6, SOCK_DGRAM, 0); 112ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 113ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 114ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 115ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strcpy(ifr4.ifr_name, name); 11636673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh ifr4.ifr_addr.sa_family = AF_INET; 117ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 118ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in6_ifreq ifr6; 119ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr6, 0, sizeof(ifr6)); 120ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_ifindex = index; 121ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 122ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char address[65]; 123ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int prefix; 124ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 125ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int chars; 126ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count = 0; 127ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 128ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh while (sscanf(addresses, " %64[^/]/%d %n", address, &prefix, &chars) == 2) { 129ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses += chars; 130ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 131ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (strchr(address, ':')) { 132ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv6 address. 133ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET6, address, &ifr6.ifr6_addr) != 1 || 134ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 128) { 135ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 136ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 137ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 138ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 139ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_prefixlen = prefix; 140ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet6, SIOCSIFADDR, &ifr6)) { 141ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 142ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 143ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 144ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 145ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv4 address. 146ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET, address, as_in_addr(&ifr4.ifr_addr)) != 1 || 147ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 32) { 148ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 149ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 150ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 151ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 152ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count) { 153ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh sprintf(ifr4.ifr_name, "%s:%d", name, count); 154ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 155ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFADDR, &ifr4)) { 156ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 157ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 158ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 159ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 160ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in_addr_t mask = prefix ? (~0 << (32 - prefix)) : 0; 161ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh *as_in_addr(&ifr4.ifr_addr) = htonl(mask); 162ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFNETMASK, &ifr4)) { 163ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 164ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 165ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 166ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 167ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGV("Address added on %s: %s/%d", name, address, prefix); 168ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ++count; 169ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 170ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 171ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count == BAD_ARGUMENT) { 172ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid address: %s/%d", address, prefix); 173ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (count == SYSTEM_ERROR) { 174ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot add address: %s/%d: %s", address, prefix, strerror(errno)); 175ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (*addresses) { 176ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid address: %s", addresses); 177ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 178ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 179ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 180ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 181ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet6); 182ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return count; 183ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 184ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 185ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int set_routes(const char *name, int index, const char *routes) 186ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 187ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet4 = socket(AF_INET, SOCK_DGRAM, 0); 188ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet6 = socket(AF_INET6, SOCK_DGRAM, 0); 189ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 190ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rtentry rt4; 191ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&rt4, 0, sizeof(rt4)); 192ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt4.rt_dev = (char *)name; 193ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt4.rt_flags = RTF_UP; 19436673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh rt4.rt_dst.sa_family = AF_INET; 19536673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh rt4.rt_genmask.sa_family = AF_INET; 19636673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh rt4.rt_gateway.sa_family = AF_INET; 197ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 198ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in6_rtmsg rt6; 199ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&rt6, 0, sizeof(rt6)); 200ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_ifindex = index; 201ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_flags = RTF_UP; 202ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 203ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char address[65]; 204ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int prefix; 205ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char gateway[65]; 206ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 207ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int chars; 208ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count = 0; 209ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 210ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh while (sscanf(routes, " %64[^/]/%d>%64[^ ] %n", 211ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh address, &prefix, gateway, &chars) == 3) { 212ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh routes += chars; 213ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 214ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (strchr(address, ':')) { 215ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv6 route. 216ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET6, gateway, &rt6.rtmsg_gateway) != 1 || 217ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh inet_pton(AF_INET6, address, &rt6.rtmsg_dst) != 1 || 218ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 128) { 219ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 220ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 221ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 222ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 223ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_dst_len = prefix; 224ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (memcmp(&rt6.rtmsg_gateway, &in6addr_any, sizeof(in6addr_any))) { 225ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_flags |= RTF_GATEWAY; 226ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 227ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet6, SIOCADDRT, &rt6)) { 228ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 229ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 230ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 231ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 232ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv4 route. 233ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET, gateway, as_in_addr(&rt4.rt_gateway)) != 1 || 234ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh inet_pton(AF_INET, address, as_in_addr(&rt4.rt_dst)) != 1 || 235ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 32) { 236ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 237ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 238ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 239ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 240ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in_addr_t mask = prefix ? (~0 << (32 - prefix)) : 0; 241ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh *as_in_addr(&rt4.rt_genmask) = htonl(mask); 242ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (*as_in_addr(&rt4.rt_gateway)) { 243ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt4.rt_flags |= RTF_GATEWAY; 244ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 245ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCADDRT, &rt4)) { 246ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 247ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 248ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 249ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 250ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGV("Route added on %s: %s/%d -> %s", name, address, prefix, gateway); 251ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ++count; 252ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 253ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 254ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count == BAD_ARGUMENT) { 255ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid route: %s/%d -> %s", address, prefix, gateway); 256ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (count == SYSTEM_ERROR) { 257ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot add route: %s/%d -> %s: %s", 258ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh address, prefix, gateway, strerror(errno)); 259ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (*routes) { 260ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid route: %s", routes); 261ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 262ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 263ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 264ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 265ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet6); 266ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return count; 267ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 268ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 269ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int get_interface_name(char *name, int tun) 270ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 271ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 272ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(tun, TUNGETIFF, &ifr4)) { 273ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot get interface name: %s", strerror(errno)); 274ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 275ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 276ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strcpy(name, ifr4.ifr_name); 277ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 278ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 279ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 280ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int reset_interface(const char *name) 281ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 282ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet4 = socket(AF_INET, SOCK_DGRAM, 0); 283ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 284ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 285ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = 0; 286ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 287ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 288ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4) && errno != ENODEV) { 289ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot reset %s: %s", name, strerror(errno)); 290ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 291ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 292ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 293ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 294ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 295ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 296ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 297ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int check_interface(const char *name) 298ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 299ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int inet4 = socket(AF_INET, SOCK_DGRAM, 0); 300ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 301ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 302ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 303ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 304ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCGIFFLAGS, &ifr4) && errno != ENODEV) { 305ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot check %s: %s", name, strerror(errno)); 306ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = 0; 307ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 308ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(inet4); 309ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return ifr4.ifr_flags; 310ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 311ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 312ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int bind_to_interface(int fd, const char *name) 313ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 314ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen(name))) { 315ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot bind socket to %s: %s", name, strerror(errno)); 316ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 317ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 318ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 319ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 320ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 321ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 322ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 323ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic void throwException(JNIEnv *env, int error, const char *message) 324ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 325ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (error == SYSTEM_ERROR) { 326ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", message); 327ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 328ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalArgumentException", message); 329ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 330ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 331ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 33236673698078cb47e777418cadc4115a65bc5947dChia-chi Yehstatic jint establish(JNIEnv *env, jobject thiz, 3333663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh jint mtu, jstring jAddresses, jstring jRoutes) 334ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 335ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char name[IFNAMSIZ]; 336ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int index; 3373663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh int tun = create_interface(mtu, name, &index); 338ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (tun < 0) { 339ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, tun, "Cannot create interface"); 34036673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh return -1; 341ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 342ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGD("%s is created", name); 343ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 344ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh const char *addresses; 345ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh const char *routes; 346ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count; 347ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 348ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Addresses are required. 349ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses = jAddresses ? env->GetStringUTFChars(jAddresses, NULL) : NULL; 350ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!addresses) { 351ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "address"); 352ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 353ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 354ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = set_addresses(name, index, addresses); 355ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jAddresses, addresses); 356ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count <= 0) { 357ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, count, "Cannot set address"); 358ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 359ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 360ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGD("Configured %d address(es) on %s", count, name); 361ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 362ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Routes are optional. 363ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh routes = jRoutes ? env->GetStringUTFChars(jRoutes, NULL) : NULL; 364ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (routes) { 365ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = set_routes(name, index, routes); 366ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jRoutes, routes); 367ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count < 0) { 368ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, count, "Cannot set route"); 369ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 370ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 371ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGD("Configured %d route(s) on %s", count, name); 372ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 373ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 37436673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh return tun; 375ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 376ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeherror: 377ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(tun); 378ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGD("%s is destroyed", name); 37936673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh return -1; 380ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 381ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 382ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic jstring getName(JNIEnv *env, jobject thiz, jint fd) 383ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 384ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char name[IFNAMSIZ]; 385ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (get_interface_name(name, fd) < 0) { 386ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot get interface name"); 387ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return NULL; 388ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 389ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return env->NewStringUTF(name); 390ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 391ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 392ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic void reset(JNIEnv *env, jobject thiz, jstring jName) 393ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 394ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh const char *name = jName ? 395ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->GetStringUTFChars(jName, NULL) : NULL; 396ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 397ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 398ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return; 399ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 400ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (reset_interface(name) < 0) { 401ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot reset interface"); 402ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 403ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGD("%s is deactivated", name); 404ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 405ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 406ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 407ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 408ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic jint check(JNIEnv *env, jobject thiz, jstring jName) 409ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 410ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh const char *name = jName ? 411ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->GetStringUTFChars(jName, NULL) : NULL; 412ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 413ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 414ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 415ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 416ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int flags = check_interface(name); 417ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 418ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return flags; 419ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 420ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 421ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic void protect(JNIEnv *env, jobject thiz, jint fd, jstring jName) 422ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 423ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh const char *name = jName ? 424ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->GetStringUTFChars(jName, NULL) : NULL; 425ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 426ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 427ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return; 428ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 429ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (bind_to_interface(fd, name) < 0) { 430ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot protect socket"); 431ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 432ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 433ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 434ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 435ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 436ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 437ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic JNINativeMethod gMethods[] = { 4383663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh {"nativeEstablish", "(ILjava/lang/String;Ljava/lang/String;)I", (void *)establish}, 439ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh {"nativeGetName", "(I)Ljava/lang/String;", (void *)getName}, 440ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh {"nativeReset", "(Ljava/lang/String;)V", (void *)reset}, 441ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh {"nativeCheck", "(Ljava/lang/String;)I", (void *)check}, 442ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh {"nativeProtect", "(ILjava/lang/String;)V", (void *)protect}, 443ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 444ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 445ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehint register_android_server_connectivity_Vpn(JNIEnv *env) 446ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 447ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return jniRegisterNativeMethods(env, "com/android/server/connectivity/Vpn", 448ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh gMethods, NELEM(gMethods)); 449ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 450ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 451ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 452