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 21ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <arpa/inet.h> 22ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <errno.h> 23ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <fcntl.h> 24ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/if.h> 25ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/if_tun.h> 26ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/route.h> 27ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include <linux/ipv6_route.h> 2852eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <netinet/in.h> 2952eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <stdio.h> 3052eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <string.h> 3152eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <sys/ioctl.h> 3252eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <sys/socket.h> 3352eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <sys/stat.h> 3452eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <sys/types.h> 3552eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn 3652eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <log/log.h> 3752eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn 3852eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include "netutils/ifc.h" 39ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 40ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh#include "jni.h" 412279b2534272282a5b5152723235da397e49195cSteven Moreland#include <nativehelper/JNIHelp.h> 42ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 43ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehnamespace android 44ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 45ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 46f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int inet4 = -1; 47f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yehstatic int inet6 = -1; 48f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 49ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic inline in_addr_t *as_in_addr(sockaddr *sa) { 50ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return &((sockaddr_in *)sa)->sin_addr.s_addr; 51ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 52ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 53ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 54ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 556c89616c388d2e5cac5f7d0c1682e48fa6ea7d31Chih-Hung Hsieh#define SYSTEM_ERROR (-1) 566c89616c388d2e5cac5f7d0c1682e48fa6ea7d31Chih-Hung Hsieh#define BAD_ARGUMENT (-2) 57ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 5897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yehstatic int create_interface(int mtu) 59ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 60f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh int tun = open("/dev/tun", O_RDWR | O_NONBLOCK); 61ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 62ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 63ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 64ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 65ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Allocate interface. 666224b5ec3857d78e92bbc21075717eaa228ff891Chia-chi Yeh ifr4.ifr_flags = IFF_TUN | IFF_NO_PI; 67ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(tun, TUNSETIFF, &ifr4)) { 683762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot allocate TUN: %s", strerror(errno)); 69ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 70ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 71ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 72ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Activate interface. 73ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr4.ifr_flags = IFF_UP; 74ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4)) { 753762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot activate %s: %s", ifr4.ifr_name, strerror(errno)); 76ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 77ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 78ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 793663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh // Set MTU if it is specified. 803663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh ifr4.ifr_mtu = mtu; 813663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh if (mtu > 0 && ioctl(inet4, SIOCSIFMTU, &ifr4)) { 823762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot set MTU on %s: %s", ifr4.ifr_name, strerror(errno)); 833663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh goto error; 843663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh } 853663227a8be5c6c05bf4adadc378fd69b7ae814cChia-chi Yeh 86ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return tun; 87ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 88ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeherror: 89ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh close(tun); 90ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 91ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 92ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 9397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yehstatic int get_interface_name(char *name, int tun) 9497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh{ 9597a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh ifreq ifr4; 9697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (ioctl(tun, TUNGETIFF, &ifr4)) { 973762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot get interface name: %s", strerror(errno)); 9897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return SYSTEM_ERROR; 9997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 10097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh strncpy(name, ifr4.ifr_name, IFNAMSIZ); 10197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return 0; 10297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh} 10397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh 10497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yehstatic int get_interface_index(const char *name) 105f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh{ 106f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh ifreq ifr4; 10797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 10897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (ioctl(inet4, SIOGIFINDEX, &ifr4)) { 1093762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot get index of %s: %s", name, strerror(errno)); 11097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return SYSTEM_ERROR; 11197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 11297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return ifr4.ifr_ifindex; 11397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh} 11497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh 11597a61565ea95472e65899070e64853f8c147bb11Chia-chi Yehstatic int set_addresses(const char *name, const char *addresses) 11697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh{ 11797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh int index = get_interface_index(name); 11897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (index < 0) { 11997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return index; 12097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 12197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh 12297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh ifreq ifr4; 123ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr4, 0, sizeof(ifr4)); 124f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 12536673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh ifr4.ifr_addr.sa_family = AF_INET; 12697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh ifr4.ifr_netmask.sa_family = AF_INET; 127ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 128ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in6_ifreq ifr6; 129ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh memset(&ifr6, 0, sizeof(ifr6)); 130ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_ifindex = index; 131ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 132ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh char address[65]; 133ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int prefix; 134ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int chars; 135ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int count = 0; 136ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 137ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh while (sscanf(addresses, " %64[^/]/%d %n", address, &prefix, &chars) == 2) { 138ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses += chars; 139ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 140ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (strchr(address, ':')) { 141ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv6 address. 142ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET6, address, &ifr6.ifr6_addr) != 1 || 143ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 128) { 144ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 145ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 146ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 147ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 148ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifr6.ifr6_prefixlen = prefix; 149ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet6, SIOCSIFADDR, &ifr6)) { 150ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 151ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 152ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 153ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 154ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh // Add an IPv4 address. 155ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (inet_pton(AF_INET, address, as_in_addr(&ifr4.ifr_addr)) != 1 || 156ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh prefix < 0 || prefix > 32) { 157ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 158ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 159ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 160ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 161ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count) { 162a346f5458a4d9e9ea8159a38ae5f696f19cf125bGeorge Burgess IV snprintf(ifr4.ifr_name, sizeof(ifr4.ifr_name), "%s:%d", name, count); 163ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 164ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFADDR, &ifr4)) { 165ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 166ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 167ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 168ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 169ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh in_addr_t mask = prefix ? (~0 << (32 - prefix)) : 0; 17097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh *as_in_addr(&ifr4.ifr_netmask) = htonl(mask); 171ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFNETMASK, &ifr4)) { 172ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = (errno == EINVAL) ? BAD_ARGUMENT : SYSTEM_ERROR; 173ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh break; 174ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 175ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 1765baa3a62a97544669fba6d65a11c07f252e654ddSteve Block ALOGD("Address added on %s: %s/%d", name, address, prefix); 177ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ++count; 178ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 179ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 180ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (count == BAD_ARGUMENT) { 1813762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Invalid address: %s/%d", address, prefix); 182ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (count == SYSTEM_ERROR) { 1833762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot add address: %s/%d: %s", address, prefix, strerror(errno)); 184ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else if (*addresses) { 1853762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Invalid address: %s", addresses); 186ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh count = BAD_ARGUMENT; 187ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 188ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 189ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return count; 190ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 191ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 192ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int reset_interface(const char *name) 193ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 194ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 195ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 196f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh ifr4.ifr_flags = 0; 197ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 198ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCSIFFLAGS, &ifr4) && errno != ENODEV) { 1993762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot reset %s: %s", name, strerror(errno)); 200ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return SYSTEM_ERROR; 201ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 202ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 203ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 204ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 205ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic int check_interface(const char *name) 206ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 207ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh ifreq ifr4; 208ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh strncpy(ifr4.ifr_name, name, IFNAMSIZ); 2096ddd57491a06da3ee56056b088424500c144063aChia-chi Yeh ifr4.ifr_flags = 0; 210ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 211ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (ioctl(inet4, SIOCGIFFLAGS, &ifr4) && errno != ENODEV) { 2123762c311729fe9f3af085c14c5c1fb471d994c03Steve Block ALOGE("Cannot check %s: %s", name, strerror(errno)); 213ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 214ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return ifr4.ifr_flags; 215ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 216ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 217f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandranstatic bool modifyAddress(JNIEnv *env, jobject thiz, jstring jName, jstring jAddress, 218f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran jint jPrefixLength, bool add) 219f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran{ 220f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran int error = SYSTEM_ERROR; 221f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 222f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran const char *address = jAddress ? env->GetStringUTFChars(jAddress, NULL) : NULL; 223f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran 224f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran if (!name) { 225f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran jniThrowNullPointerException(env, "name"); 226f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } else if (!address) { 227f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran jniThrowNullPointerException(env, "address"); 228f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } else { 229f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran if (add) { 2308dcf593f90792272bd21e498da1aeb60fced1989Andreas Gampe if ((error = ifc_add_address(name, address, jPrefixLength)) != 0) { 231f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran ALOGE("Cannot add address %s/%d on interface %s (%s)", address, jPrefixLength, name, 232f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran strerror(-error)); 233f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 234f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } else { 2358dcf593f90792272bd21e498da1aeb60fced1989Andreas Gampe if ((error = ifc_del_address(name, address, jPrefixLength)) != 0) { 236f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran ALOGE("Cannot del address %s/%d on interface %s (%s)", address, jPrefixLength, name, 237f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran strerror(-error)); 238f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 239f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 240f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 241f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran 242f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran if (name) { 243f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran env->ReleaseStringUTFChars(jName, name); 244f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 245f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran if (address) { 246f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran env->ReleaseStringUTFChars(jAddress, address); 247f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran } 248f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran return !error; 249f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran} 250f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran 251ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 252ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 253ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehstatic void throwException(JNIEnv *env, int error, const char *message) 254ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 255ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (error == SYSTEM_ERROR) { 256ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", message); 257ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } else { 258ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowException(env, "java/lang/IllegalArgumentException", message); 259ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 260ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 261ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 26226872f4b9e634d77ecd78e4eee9d5d070f8553f8Andreas Gampestatic jint create(JNIEnv *env, jobject /* thiz */, jint mtu) 263ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 26497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh int tun = create_interface(mtu); 265ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (tun < 0) { 266ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, tun, "Cannot create interface"); 26736673698078cb47e777418cadc4115a65bc5947dChia-chi Yeh return -1; 268ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 26997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return tun; 27097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh} 271ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 27226872f4b9e634d77ecd78e4eee9d5d070f8553f8Andreas Gampestatic jstring getName(JNIEnv *env, jobject /* thiz */, jint tun) 27397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh{ 27497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh char name[IFNAMSIZ]; 27597a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (get_interface_name(name, tun) < 0) { 27697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot get interface name"); 27797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return NULL; 27897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 27997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return env->NewStringUTF(name); 28097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh} 28197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh 28226872f4b9e634d77ecd78e4eee9d5d070f8553f8Andreas Gampestatic jint setAddresses(JNIEnv *env, jobject /* thiz */, jstring jName, 28397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh jstring jAddresses) 28497a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh{ 28597a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh const char *name = NULL; 286f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *addresses = NULL; 28797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh int count = -1; 288f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh 28997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 29097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (!name) { 29197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh jniThrowNullPointerException(env, "name"); 29297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh goto error; 29397a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 294ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh addresses = jAddresses ? env->GetStringUTFChars(jAddresses, NULL) : NULL; 295ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!addresses) { 29697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh jniThrowNullPointerException(env, "addresses"); 297ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh goto error; 298ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 29997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh count = set_addresses(name, addresses); 30097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (count < 0) { 301ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, count, "Cannot set address"); 30297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh count = -1; 303ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 3043281034c1c458b4eecd867d20b64dc5edd68ec14Chia-chi Yeh 305f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeherror: 30697a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (name) { 30797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 30897a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 30997a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh if (addresses) { 31097a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh env->ReleaseStringUTFChars(jAddresses, addresses); 31197a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh } 31297a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh return count; 3133281034c1c458b4eecd867d20b64dc5edd68ec14Chia-chi Yeh} 3143281034c1c458b4eecd867d20b64dc5edd68ec14Chia-chi Yeh 31526872f4b9e634d77ecd78e4eee9d5d070f8553f8Andreas Gampestatic void reset(JNIEnv *env, jobject /* thiz */, jstring jName) 316ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 317f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 318ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 319ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 320ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return; 321ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 322ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (reset_interface(name) < 0) { 323ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh throwException(env, SYSTEM_ERROR, "Cannot reset interface"); 324ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 325ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 326ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 327ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 32826872f4b9e634d77ecd78e4eee9d5d070f8553f8Andreas Gampestatic jint check(JNIEnv *env, jobject /* thiz */, jstring jName) 329ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 330f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh const char *name = jName ? env->GetStringUTFChars(jName, NULL) : NULL; 331ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh if (!name) { 332ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh jniThrowNullPointerException(env, "name"); 333ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return 0; 334ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh } 335ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh int flags = check_interface(name); 336ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh env->ReleaseStringUTFChars(jName, name); 337ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return flags; 338ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 339ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 340f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandranstatic bool addAddress(JNIEnv *env, jobject thiz, jstring jName, jstring jAddress, 341f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran jint jPrefixLength) 342f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran{ 343f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran return modifyAddress(env, thiz, jName, jAddress, jPrefixLength, true); 344f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran} 345f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran 346f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandranstatic bool delAddress(JNIEnv *env, jobject thiz, jstring jName, jstring jAddress, 347f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran jint jPrefixLength) 348f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran{ 349f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran return modifyAddress(env, thiz, jName, jAddress, jPrefixLength, false); 350f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran} 351f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran 352ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh//------------------------------------------------------------------------------ 353ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 35476f6a86de25e1bf74717e047e55fd44b089673f3Daniel Micaystatic const JNINativeMethod gMethods[] = { 35597a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh {"jniCreate", "(I)I", (void *)create}, 356c2b8aa0b4c822b0e307f62131650f4a6ee89bb66Chia-chi Yeh {"jniGetName", "(I)Ljava/lang/String;", (void *)getName}, 35797a61565ea95472e65899070e64853f8c147bb11Chia-chi Yeh {"jniSetAddresses", "(Ljava/lang/String;Ljava/lang/String;)I", (void *)setAddresses}, 358c2b8aa0b4c822b0e307f62131650f4a6ee89bb66Chia-chi Yeh {"jniReset", "(Ljava/lang/String;)V", (void *)reset}, 359c2b8aa0b4c822b0e307f62131650f4a6ee89bb66Chia-chi Yeh {"jniCheck", "(Ljava/lang/String;)I", (void *)check}, 360f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran {"jniAddAddress", "(Ljava/lang/String;Ljava/lang/String;I)Z", (void *)addAddress}, 361f4e0c0cb8ef22fdb20ae74b444c9f4b7d15ded8bSreeram Ramachandran {"jniDelAddress", "(Ljava/lang/String;Ljava/lang/String;I)Z", (void *)delAddress}, 362ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 363ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 364ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yehint register_android_server_connectivity_Vpn(JNIEnv *env) 365ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh{ 366f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (inet4 == -1) { 367f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh inet4 = socket(AF_INET, SOCK_DGRAM, 0); 368f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 369f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh if (inet6 == -1) { 370f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh inet6 = socket(AF_INET6, SOCK_DGRAM, 0); 371f4e3bf892e593d8c74290739446ac205fe8c66b2Chia-chi Yeh } 372ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh return jniRegisterNativeMethods(env, "com/android/server/connectivity/Vpn", 373ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh gMethods, NELEM(gMethods)); 374ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh} 375ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh 376ff3bdca31f4cf2bd607519b276dd175763aa1784Chia-chi Yeh}; 377