com_android_server_connectivity_Vpn.cpp revision f4e3bf892e593d8c74290739446ac205fe8c66b2
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 45f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int inet4 = -1; 46f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int inet6 = -1; 47f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 48ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic inline in_addr_t *as_in_addr(sockaddr *sa) { 49ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return &((sockaddr_in *)sa)->sin_addr.s_addr; 50ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 51ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 52ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 53ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 54ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define SYSTEM_ERROR -1 55ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#define BAD_ARGUMENT -2 56ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 57f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int create_interface(int mtu) 58ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 59f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int tun = open("/dev/tun", O_RDWR | O_NONBLOCK); 60ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 61ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 62ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 63ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 64ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Allocate interface. 656224b5ec3857d78e92bbc21075717eaa228ff891Chia-chi Yeh ifr4.ifr_flags = IFF_TUN | IFF_NO_PI; 66ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(tun, TUNSETIFF, &ifr4)) { 67ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot allocate TUN: %s", strerror(errno)); 68ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 69ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 70ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 71ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Activate interface. 72ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = IFF_UP; 73ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4)) { 74ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot activate %s: %s", ifr4.ifr_name, strerror(errno)); 75ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 76ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 77ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 783663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh // Set MTU if it is specified. 793663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh ifr4.ifr_mtu = mtu; 803663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh if (mtu > 0 && ioctl(inet4, SIOCSIFMTU, &ifr4)) { 813663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh LOGE("Cannot set MTU on %s: %s", ifr4.ifr_name, strerror(errno)); 823663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh goto error; 833663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh } 843663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh 85ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return tun; 86ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 87ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeherror: 88ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(tun); 89ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 90ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 91ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 92f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int get_interface_name(char *name, int tun) 93f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh{ 94f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh ifreq ifr4; 95f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (ioctl(tun, TUNGETIFF, &ifr4)) { 96f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh LOGE("Cannot get interface name: %s", strerror(errno)); 97f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return SYSTEM_ERROR; 98f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 99f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh strncpy(name, ifr4.ifr_name, IFNAMSIZ); 100f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return 0; 101f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh} 102f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 103f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int get_interface_index(const char *name) 104f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh{ 105f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh ifreq ifr4; 106f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 107f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (ioctl(inet4, SIOGIFINDEX, &ifr4)) { 108f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh LOGE("Cannot get index of %s: %s", name, strerror(errno)); 109f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return SYSTEM_ERROR; 110f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 111f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return ifr4.ifr_ifindex; 112f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh} 113f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 114f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int set_addresses(const char *name, const char *addresses) 115ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 116f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int index = get_interface_index(name); 117f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (index < 0) { 118f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return index; 119f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 120ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 121ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 122ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 123f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 12436673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh ifr4.ifr_addr.sa_family = AF_INET; 125ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 126ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in6_ifreq ifr6; 127ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr6, 0, sizeof(ifr6)); 128ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_ifindex = index; 129ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 130ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char address[65]; 131ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int prefix; 132ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int chars; 133ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count = 0; 134ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 135ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh while (sscanf(addresses, " %64[^/]/%d %n", address, &prefix, &chars) == 2) { 136ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses += chars; 137ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 138ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (strchr(address, ':')) { 139ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv6 address. 140ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET6, address, &ifr6.ifr6_addr) != 1 || 141ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 128) { 142ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 143ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 144ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 145ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 146ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_prefixlen = prefix; 147ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet6, SIOCSIFADDR, &ifr6)) { 148ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 149ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 150ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 151ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 152ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv4 address. 153ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET, address, as_in_addr(&ifr4.ifr_addr)) != 1 || 154ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 32) { 155ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 156ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 157ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 158ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 159ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count) { 160ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh sprintf(ifr4.ifr_name, "%s:%d", name, count); 161ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 162ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFADDR, &ifr4)) { 163ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 164ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 165ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 166ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 167ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in_addr_t mask = prefix ? (~0 << (32 - prefix)) : 0; 168ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh *as_in_addr(&ifr4.ifr_addr) = htonl(mask); 169ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFNETMASK, &ifr4)) { 170ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 171ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 172ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 173ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 174f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh LOGD("Address added on %s: %s/%d", name, address, prefix); 175ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ++count; 176ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 177ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 178ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count == BAD_ARGUMENT) { 179ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid address: %s/%d", address, prefix); 180ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (count == SYSTEM_ERROR) { 181ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot add address: %s/%d: %s", address, prefix, strerror(errno)); 182ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (*addresses) { 183ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid address: %s", addresses); 184ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 185ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 186ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 187ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return count; 188ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 189ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 190f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int set_routes(const char *name, const char *routes) 191ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 192f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int index = get_interface_index(name); 193f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (index < 0) { 194f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return index; 195f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 196ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 197ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rtentry rt4; 198ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&rt4, 0, sizeof(rt4)); 199ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt4.rt_dev = (char *)name; 200ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt4.rt_flags = RTF_UP; 20136673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh rt4.rt_dst.sa_family = AF_INET; 20236673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh rt4.rt_genmask.sa_family = AF_INET; 203ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 204ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in6_rtmsg rt6; 205ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&rt6, 0, sizeof(rt6)); 206ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_ifindex = index; 207ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh rt6.rtmsg_flags = RTF_UP; 208ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 209ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char address[65]; 210ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int prefix; 211ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int chars; 212ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count = 0; 213ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 2148ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh while (sscanf(routes, " %64[^/]/%d %n", address, &prefix, &chars) == 2) { 215ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh routes += chars; 216ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 217ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (strchr(address, ':')) { 218ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv6 route. 2198ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh if (inet_pton(AF_INET6, address, &rt6.rtmsg_dst) != 1 || 220f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh prefix < 0 || prefix > 128) { 221ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 222ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 223ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 224ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 225f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh rt6.rtmsg_dst_len = prefix ? prefix : 1; 22623a5e4bcdcf7d3fef9aaa6c4a20f9f08f22ca9a6Chia-chi Yeh if (ioctl(inet6, SIOCADDRT, &rt6) && errno != EEXIST) { 227ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 228ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 229ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 230f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 231f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (!prefix) { 232f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh // Split the route instead of replacing the default route. 233f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh rt6.rtmsg_dst.s6_addr[0] ^= 0x80; 234f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (ioctl(inet6, SIOCADDRT, &rt6) && errno != EEXIST) { 235f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = SYSTEM_ERROR; 236f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh break; 237f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 238f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 239ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 240ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv4 route. 2418ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh if (inet_pton(AF_INET, address, as_in_addr(&rt4.rt_dst)) != 1 || 242f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh prefix < 0 || prefix > 32) { 243ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 244ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 245ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 246ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 247f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh in_addr_t mask = prefix ? (~0 << (32 - prefix)) : 1; 248ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh *as_in_addr(&rt4.rt_genmask) = htonl(mask); 24923a5e4bcdcf7d3fef9aaa6c4a20f9f08f22ca9a6Chia-chi Yeh if (ioctl(inet4, SIOCADDRT, &rt4) && errno != EEXIST) { 250ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 251ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 252ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 253f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 254f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (!prefix) { 255f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh // Split the route instead of replacing the default route. 256f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh *as_in_addr(&rt4.rt_dst) ^= htonl(0x80000000); 257f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (ioctl(inet4, SIOCADDRT, &rt4) && errno != EEXIST) { 258f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = SYSTEM_ERROR; 259f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh break; 260f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 261f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 262ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 263f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh LOGD("Route added on %s: %s/%d", name, address, prefix); 264ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ++count; 265ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 266ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 267ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count == BAD_ARGUMENT) { 2688ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh LOGE("Invalid route: %s/%d", address, prefix); 269ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (count == SYSTEM_ERROR) { 2708ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh LOGE("Cannot add route: %s/%d: %s", 2718ea928945b6a594e7e569613742367a91f01e785Chia-chi Yeh address, prefix, strerror(errno)); 272ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (*routes) { 273ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Invalid route: %s", routes); 274ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 275ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 276ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 277ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return count; 278ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 279ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 280ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int reset_interface(const char *name) 281ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 282ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 283ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 284f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh ifr4.ifr_flags = 0; 285ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 286ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4) && errno != ENODEV) { 287ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot reset %s: %s", name, strerror(errno)); 288ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 289ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 290ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 291ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 292ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 293ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int check_interface(const char *name) 294ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 295ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 296ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 2976ddd57491a06da3ee56056b088424500c144063aChia-chi Yeh ifr4.ifr_flags = 0; 298ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 299ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCGIFFLAGS, &ifr4) && errno != ENODEV) { 300ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot check %s: %s", name, strerror(errno)); 301ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 302ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return ifr4.ifr_flags; 303ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 304ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 305ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int bind_to_interface(int fd, const char *name) 306ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 307ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen(name))) { 308ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh LOGE("Cannot bind socket to %s: %s", name, strerror(errno)); 309ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 310ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 311ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 312ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 313ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 314ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 315ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 316ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic void throwException(JNIEnv *env, int error, const char *message) 317ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 318ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (error == SYSTEM_ERROR) { 319ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", message); 320ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 321ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalArgumentException", message); 322ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 323ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 324ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 325f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic jint createInterface(JNIEnv *env, jobject thiz, jint mtu) 326ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 327f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int tun = create_interface(mtu); 328ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (tun < 0) { 329ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, tun, "Cannot create interface"); 33036673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh return -1; 331ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 332f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return tun; 333f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh} 334ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 335f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic jstring getInterfaceName(JNIEnv *env, jobject thiz, jint tun) 336f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh{ 337f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh char name[IFNAMSIZ]; 338f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (get_interface_name(name, tun) < 0) { 339f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot get interface name"); 340f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return NULL; 341f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 342f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return env->NewStringUTF(name); 343f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh} 344ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 345f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic jint setAddresses(JNIEnv *env, jobject thiz, jstring jName, 346f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jstring jAddresses) 347f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh{ 348f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = NULL; 349f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *addresses = NULL; 350f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int count = -1; 351f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 352f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 353f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (!name) { 354f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jniThrowNullPointerException(env, "name"); 355f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh goto error; 356f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 357ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses = jAddresses ? env->GetStringUTFChars(jAddresses, NULL) : NULL; 358ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!addresses) { 359f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jniThrowNullPointerException(env, "addresses"); 360ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 361ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 362f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = set_addresses(name, addresses); 363f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (count < 0) { 364ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, count, "Cannot set address"); 365f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = -1; 366ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 367ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 368ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeherror: 369f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (name) { 370f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 371f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 372f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (addresses) { 373f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh env->ReleaseStringUTFChars(jAddresses, addresses); 374f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 375f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return count; 376ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 377ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 378f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic jint setRoutes(JNIEnv *env, jobject thiz, jstring jName, 379f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jstring jRoutes) 380ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 381f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = NULL; 382f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *routes = NULL; 383f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int count = -1; 384f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 385f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 386f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (!name) { 387f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jniThrowNullPointerException(env, "name"); 388f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh goto error; 389ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 390f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh routes = jRoutes ? env->GetStringUTFChars(jRoutes, NULL) : NULL; 391f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (!routes) { 392f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh jniThrowNullPointerException(env, "routes"); 393f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh goto error; 394f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 395f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = set_routes(name, routes); 396f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (count < 0) { 397f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh throwException(env, count, "Cannot set address"); 398f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh count = -1; 399f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 400f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 401f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeherror: 402f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (name) { 403f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 404f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 405f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (routes) { 406f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh env->ReleaseStringUTFChars(jRoutes, routes); 407f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 408f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh return count; 409ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 410ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 411f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic void resetInterface(JNIEnv *env, jobject thiz, jstring jName) 412ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 413f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 414ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 415ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 416ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return; 417ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 418ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (reset_interface(name) < 0) { 419ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot reset interface"); 420ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 421ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 422ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 423ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 424f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic jint checkInterface(JNIEnv *env, jobject thiz, jstring jName) 425ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 426f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 427ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 428ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 429ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 430ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 431ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int flags = check_interface(name); 432ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 433ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return flags; 434ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 435ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 436f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic void protectSocket(JNIEnv *env, jobject thiz, jint fd, jstring jName) 437ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 438f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 439ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 440ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 441ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return; 442ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 443ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (bind_to_interface(fd, name) < 0) { 444ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot protect socket"); 445ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 446ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 447ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 448ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 449ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 450ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 451ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic JNINativeMethod gMethods[] = { 452f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniCreateInterface", "(I)I", (void *)createInterface}, 453f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniGetInterfaceName", "(I)Ljava/lang/String;", (void *)getInterfaceName}, 454f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniSetAddresses", "(Ljava/lang/String;Ljava/lang/String;)I", (void *)setAddresses}, 455f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniSetRoutes", "(Ljava/lang/String;Ljava/lang/String;)I", (void *)setRoutes}, 456f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniResetInterface", "(Ljava/lang/String;)V", (void *)resetInterface}, 457f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniCheckInterface", "(Ljava/lang/String;)I", (void *)checkInterface}, 458f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh {"jniProtectSocket", "(ILjava/lang/String;)V", (void *)protectSocket}, 459ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 460ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 461ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehint register_android_server_connectivity_Vpn(JNIEnv *env) 462ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 463f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (inet4 == -1) { 464f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh inet4 = socket(AF_INET, SOCK_DGRAM, 0); 465f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 466f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (inet6 == -1) { 467f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh inet6 = socket(AF_INET6, SOCK_DGRAM, 0); 468f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 469ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return jniRegisterNativeMethods(env, "com/android/server/connectivity/Vpn", 470ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh gMethods, NELEM(gMethods)); 471ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 472ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 473ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 474