jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 1 | /* |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 2 | * TUN interface functions. |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 3 | * Copyright (C) 2002, 2003, 2004 Mondru AB. |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 4 | * |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 5 | * The contents of this file may be used under the terms of the GNU |
| 6 | * General Public License Version 2, provided that the above copyright |
| 7 | * notice and this permission notice is included in all copies or |
| 8 | * substantial portions of the software. |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 9 | * |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | /* |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 13 | * tun.c: Contains all TUN functionality. Is able to handle multiple |
| 14 | * tunnels in the same program. Each tunnel is identified by the struct, |
| 15 | * which is passed to functions. |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 16 | * |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 17 | */ |
| 18 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/socket.h> |
| 23 | #include <netinet/in.h> |
| 24 | #include <arpa/inet.h> |
| 25 | #include <sys/stat.h> |
| 26 | #include <sys/time.h> |
| 27 | #include <unistd.h> |
| 28 | #include <string.h> |
| 29 | #include <errno.h> |
| 30 | #include <fcntl.h> |
| 31 | |
| 32 | #include <stdio.h> |
| 33 | #include <fcntl.h> |
| 34 | #include <unistd.h> |
| 35 | #include <sys/time.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 36 | #include <sys/ioctl.h> |
| 37 | #include <sys/socket.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 38 | #include <errno.h> |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 39 | #include <net/route.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 40 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 41 | #if defined(__linux__) |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 42 | #include <linux/if.h> |
| 43 | #include <linux/if_tun.h> |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 44 | #include <linux/netlink.h> |
| 45 | #include <linux/rtnetlink.h> |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 46 | |
| 47 | #elif defined (__FreeBSD__) |
| 48 | #include <net/if.h> |
| 49 | #include <net/if_tun.h> |
| 50 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 51 | #elif defined (__APPLE__) |
| 52 | #include <net/if.h> |
| 53 | |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 54 | #elif defined (__sun__) |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 55 | #include <stropts.h> |
| 56 | #include <sys/sockio.h> |
| 57 | #include <net/if.h> |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 58 | #include <net/if_tun.h> |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 59 | /*#include "sun_if_tun.h"*/ |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 60 | |
| 61 | #else |
| 62 | #error "Unknown platform!" |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 63 | #endif |
| 64 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 65 | #include "tun.h" |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 66 | #include "syserr.h" |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 67 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 68 | #if defined(__linux__) |
| 69 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 70 | int tun_nlattr(struct nlmsghdr *n, int nsize, int type, void *d, int dlen) |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 71 | { |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 72 | int len = RTA_LENGTH(dlen); |
| 73 | int alen = NLMSG_ALIGN(n->nlmsg_len); |
| 74 | struct rtattr *rta = (struct rtattr *)(((void *)n) + alen); |
| 75 | if (alen + len > nsize) |
| 76 | return -1; |
| 77 | rta->rta_len = len; |
| 78 | rta->rta_type = type; |
| 79 | memcpy(RTA_DATA(rta), d, dlen); |
| 80 | n->nlmsg_len = alen + len; |
| 81 | return 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 82 | } |
| 83 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 84 | int tun_gifindex(struct tun_t *this, __u32 * index) |
| 85 | { |
| 86 | struct ifreq ifr; |
| 87 | int fd; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 88 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 89 | memset(&ifr, '\0', sizeof(ifr)); |
| 90 | ifr.ifr_addr.sa_family = AF_INET; |
| 91 | ifr.ifr_dstaddr.sa_family = AF_INET; |
| 92 | ifr.ifr_netmask.sa_family = AF_INET; |
| 93 | strncpy(ifr.ifr_name, this->devname, IFNAMSIZ); |
| 94 | ifr.ifr_name[IFNAMSIZ - 1] = 0; /* Make sure to terminate */ |
| 95 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 96 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 97 | } |
| 98 | if (ioctl(fd, SIOCGIFINDEX, &ifr)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 99 | SYS_ERR(DTUN, LOGL_ERROR, errno, "ioctl() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 100 | close(fd); |
| 101 | return -1; |
| 102 | } |
| 103 | close(fd); |
| 104 | *index = ifr.ifr_ifindex; |
| 105 | return 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 106 | } |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 107 | #endif |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 108 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 109 | int tun_sifflags(struct tun_t *this, int flags) |
| 110 | { |
| 111 | struct ifreq ifr; |
| 112 | int fd; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 113 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 114 | memset(&ifr, '\0', sizeof(ifr)); |
| 115 | ifr.ifr_flags = flags; |
| 116 | strncpy(ifr.ifr_name, this->devname, IFNAMSIZ); |
| 117 | ifr.ifr_name[IFNAMSIZ - 1] = 0; /* Make sure to terminate */ |
| 118 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 119 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Michael McTernan | b07d070 | 2015-05-02 07:52:23 +0200 | [diff] [blame] | 120 | return -1; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 121 | } |
| 122 | if (ioctl(fd, SIOCSIFFLAGS, &ifr)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 123 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 124 | "ioctl(SIOCSIFFLAGS) failed"); |
| 125 | close(fd); |
| 126 | return -1; |
| 127 | } |
| 128 | close(fd); |
| 129 | return 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 130 | } |
| 131 | |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 132 | /* Currently unused |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 133 | int tun_addroute2(struct tun_t *this, |
| 134 | struct in_addr *dst, |
| 135 | struct in_addr *gateway, |
| 136 | struct in_addr *mask) { |
| 137 | |
| 138 | struct { |
| 139 | struct nlmsghdr n; |
| 140 | struct rtmsg r; |
| 141 | char buf[TUN_NLBUFSIZE]; |
| 142 | } req; |
| 143 | |
| 144 | struct sockaddr_nl local; |
| 145 | int addr_len; |
| 146 | int fd; |
| 147 | int status; |
| 148 | struct sockaddr_nl nladdr; |
| 149 | struct iovec iov; |
| 150 | struct msghdr msg; |
| 151 | |
| 152 | memset(&req, 0, sizeof(req)); |
| 153 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); |
| 154 | req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE; |
| 155 | req.n.nlmsg_type = RTM_NEWROUTE; |
| 156 | req.r.rtm_family = AF_INET; |
| 157 | req.r.rtm_table = RT_TABLE_MAIN; |
| 158 | req.r.rtm_protocol = RTPROT_BOOT; |
| 159 | req.r.rtm_scope = RT_SCOPE_UNIVERSE; |
| 160 | req.r.rtm_type = RTN_UNICAST; |
| 161 | tun_nlattr(&req.n, sizeof(req), RTA_DST, dst, 4); |
| 162 | tun_nlattr(&req.n, sizeof(req), RTA_GATEWAY, gateway, 4); |
| 163 | |
| 164 | if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 165 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 166 | "socket() failed"); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 167 | return -1; |
| 168 | } |
| 169 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 170 | memset(&local, 0, sizeof(local)); |
| 171 | local.nl_family = AF_NETLINK; |
| 172 | local.nl_groups = 0; |
| 173 | |
| 174 | if (bind(fd, (struct sockaddr*)&local, sizeof(local)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 175 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 176 | "bind() failed"); |
| 177 | close(fd); |
| 178 | return -1; |
| 179 | } |
| 180 | |
| 181 | addr_len = sizeof(local); |
| 182 | if (getsockname(fd, (struct sockaddr*)&local, &addr_len) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 183 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 184 | "getsockname() failed"); |
| 185 | close(fd); |
| 186 | return -1; |
| 187 | } |
| 188 | |
| 189 | if (addr_len != sizeof(local)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 190 | SYS_ERR(DTUN, LOGL_ERROR, 0, |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 191 | "Wrong address length %d", addr_len); |
| 192 | close(fd); |
| 193 | return -1; |
| 194 | } |
| 195 | |
| 196 | if (local.nl_family != AF_NETLINK) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 197 | SYS_ERR(DTUN, LOGL_ERROR, 0, |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 198 | "Wrong address family %d", local.nl_family); |
| 199 | close(fd); |
| 200 | return -1; |
| 201 | } |
| 202 | |
| 203 | iov.iov_base = (void*)&req.n; |
| 204 | iov.iov_len = req.n.nlmsg_len; |
| 205 | |
| 206 | msg.msg_name = (void*)&nladdr; |
| 207 | msg.msg_namelen = sizeof(nladdr), |
| 208 | msg.msg_iov = &iov; |
| 209 | msg.msg_iovlen = 1; |
| 210 | msg.msg_control = NULL; |
| 211 | msg.msg_controllen = 0; |
| 212 | msg.msg_flags = 0; |
| 213 | |
| 214 | memset(&nladdr, 0, sizeof(nladdr)); |
| 215 | nladdr.nl_family = AF_NETLINK; |
| 216 | nladdr.nl_pid = 0; |
| 217 | nladdr.nl_groups = 0; |
| 218 | |
| 219 | req.n.nlmsg_seq = 0; |
| 220 | req.n.nlmsg_flags |= NLM_F_ACK; |
| 221 | |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 222 | status = sendmsg(fd, &msg, 0); * TODO: Error check * |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 223 | close(fd); |
| 224 | return 0; |
| 225 | } |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 226 | */ |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 227 | |
| 228 | int tun_addaddr(struct tun_t *this, |
| 229 | struct in_addr *addr, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 230 | struct in_addr *dstaddr, struct in_addr *netmask) |
| 231 | { |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 232 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 233 | #if defined(__linux__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 234 | struct { |
| 235 | struct nlmsghdr n; |
| 236 | struct ifaddrmsg i; |
| 237 | char buf[TUN_NLBUFSIZE]; |
| 238 | } req; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 239 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 240 | struct sockaddr_nl local; |
| 241 | socklen_t addr_len; |
| 242 | int fd; |
| 243 | int status; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 244 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 245 | struct sockaddr_nl nladdr; |
| 246 | struct iovec iov; |
| 247 | struct msghdr msg; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 248 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 249 | if (!this->addrs) /* Use ioctl for first addr to make ping work */ |
| 250 | return tun_setaddr(this, addr, dstaddr, netmask); |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 251 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 252 | memset(&req, 0, sizeof(req)); |
| 253 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
| 254 | req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE; |
| 255 | req.n.nlmsg_type = RTM_NEWADDR; |
| 256 | req.i.ifa_family = AF_INET; |
| 257 | req.i.ifa_prefixlen = 32; /* 32 FOR IPv4 */ |
| 258 | req.i.ifa_flags = 0; |
| 259 | req.i.ifa_scope = RT_SCOPE_HOST; /* TODO or 0 */ |
| 260 | if (tun_gifindex(this, &req.i.ifa_index)) { |
| 261 | return -1; |
| 262 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 263 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 264 | tun_nlattr(&req.n, sizeof(req), IFA_ADDRESS, addr, sizeof(addr)); |
| 265 | tun_nlattr(&req.n, sizeof(req), IFA_LOCAL, dstaddr, sizeof(dstaddr)); |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 266 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 267 | if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 268 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 269 | return -1; |
| 270 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 271 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 272 | memset(&local, 0, sizeof(local)); |
| 273 | local.nl_family = AF_NETLINK; |
| 274 | local.nl_groups = 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 275 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 276 | if (bind(fd, (struct sockaddr *)&local, sizeof(local)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 277 | SYS_ERR(DTUN, LOGL_ERROR, errno, "bind() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 278 | close(fd); |
| 279 | return -1; |
| 280 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 281 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 282 | addr_len = sizeof(local); |
| 283 | if (getsockname(fd, (struct sockaddr *)&local, &addr_len) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 284 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 285 | "getsockname() failed"); |
| 286 | close(fd); |
| 287 | return -1; |
| 288 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 289 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 290 | if (addr_len != sizeof(local)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 291 | SYS_ERR(DTUN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 292 | "Wrong address length %d", addr_len); |
| 293 | close(fd); |
| 294 | return -1; |
| 295 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 296 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 297 | if (local.nl_family != AF_NETLINK) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 298 | SYS_ERR(DTUN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 299 | "Wrong address family %d", local.nl_family); |
| 300 | close(fd); |
| 301 | return -1; |
| 302 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 303 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 304 | iov.iov_base = (void *)&req.n; |
| 305 | iov.iov_len = req.n.nlmsg_len; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 306 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 307 | msg.msg_name = (void *)&nladdr; |
Michael McTernan | b07d070 | 2015-05-02 07:52:23 +0200 | [diff] [blame] | 308 | msg.msg_namelen = sizeof(nladdr); |
| 309 | msg.msg_iov = &iov; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 310 | msg.msg_iovlen = 1; |
| 311 | msg.msg_control = NULL; |
| 312 | msg.msg_controllen = 0; |
| 313 | msg.msg_flags = 0; |
| 314 | |
| 315 | memset(&nladdr, 0, sizeof(nladdr)); |
| 316 | nladdr.nl_family = AF_NETLINK; |
| 317 | nladdr.nl_pid = 0; |
| 318 | nladdr.nl_groups = 0; |
| 319 | |
| 320 | req.n.nlmsg_seq = 0; |
| 321 | req.n.nlmsg_flags |= NLM_F_ACK; |
| 322 | |
Michael McTernan | b07d070 | 2015-05-02 07:52:23 +0200 | [diff] [blame] | 323 | status = sendmsg(fd, &msg, 0); |
| 324 | if (status != req.n.nlmsg_len) { |
| 325 | SYS_ERR(DTUN, LOGL_ERROR, errno, "sendmsg() failed, returned %d", status); |
| 326 | close(fd); |
| 327 | return -1; |
| 328 | } |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 329 | |
Michael McTernan | b07d070 | 2015-05-02 07:52:23 +0200 | [diff] [blame] | 330 | status = tun_sifflags(this, IFF_UP | IFF_RUNNING); |
| 331 | if (status == -1) { |
| 332 | close(fd); |
| 333 | return -1; |
| 334 | } |
| 335 | |
| 336 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 337 | close(fd); |
| 338 | this->addrs++; |
| 339 | return 0; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 340 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 341 | #elif defined (__FreeBSD__) || defined (__APPLE__) |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 342 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 343 | int fd; |
| 344 | struct ifaliasreq areq; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 345 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 346 | /* TODO: Is this needed on FreeBSD? */ |
| 347 | if (!this->addrs) /* Use ioctl for first addr to make ping work */ |
| 348 | return tun_setaddr(this, addr, dstaddr, netmask); /* TODO dstaddr */ |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 349 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 350 | memset(&areq, 0, sizeof(areq)); |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 351 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 352 | /* Set up interface name */ |
| 353 | strncpy(areq.ifra_name, this->devname, IFNAMSIZ); |
| 354 | areq.ifra_name[IFNAMSIZ - 1] = 0; /* Make sure to terminate */ |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 355 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 356 | ((struct sockaddr_in *)&areq.ifra_addr)->sin_family = AF_INET; |
| 357 | ((struct sockaddr_in *)&areq.ifra_addr)->sin_len = |
| 358 | sizeof(areq.ifra_addr); |
| 359 | ((struct sockaddr_in *)&areq.ifra_addr)->sin_addr.s_addr = addr->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 360 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 361 | ((struct sockaddr_in *)&areq.ifra_mask)->sin_family = AF_INET; |
| 362 | ((struct sockaddr_in *)&areq.ifra_mask)->sin_len = |
| 363 | sizeof(areq.ifra_mask); |
| 364 | ((struct sockaddr_in *)&areq.ifra_mask)->sin_addr.s_addr = |
| 365 | netmask->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 366 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 367 | /* For some reason FreeBSD uses ifra_broadcast for specifying dstaddr */ |
| 368 | ((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_family = AF_INET; |
| 369 | ((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_len = |
| 370 | sizeof(areq.ifra_broadaddr); |
| 371 | ((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_addr.s_addr = |
| 372 | dstaddr->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 373 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 374 | /* Create a channel to the NET kernel. */ |
| 375 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 376 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 377 | return -1; |
| 378 | } |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 379 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 380 | if (ioctl(fd, SIOCAIFADDR, (void *)&areq) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 381 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 382 | "ioctl(SIOCAIFADDR) failed"); |
| 383 | close(fd); |
| 384 | return -1; |
| 385 | } |
| 386 | |
| 387 | close(fd); |
| 388 | this->addrs++; |
| 389 | return 0; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 390 | |
| 391 | #elif defined (__sun__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 392 | |
| 393 | if (!this->addrs) /* Use ioctl for first addr to make ping work */ |
| 394 | return tun_setaddr(this, addr, dstaddr, netmask); |
| 395 | |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 396 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 397 | "Setting multiple addresses not possible on Solaris"); |
| 398 | return -1; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 399 | |
| 400 | #else |
| 401 | #error "Unknown platform!" |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 402 | #endif |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 403 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 404 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 405 | |
| 406 | int tun_setaddr(struct tun_t *this, |
| 407 | struct in_addr *addr, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 408 | struct in_addr *dstaddr, struct in_addr *netmask) |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 409 | { |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 410 | struct ifreq ifr; |
| 411 | int fd; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 412 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 413 | memset(&ifr, '\0', sizeof(ifr)); |
| 414 | ifr.ifr_addr.sa_family = AF_INET; |
| 415 | ifr.ifr_dstaddr.sa_family = AF_INET; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 416 | |
| 417 | #if defined(__linux__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 418 | ifr.ifr_netmask.sa_family = AF_INET; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 419 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 420 | #elif defined(__FreeBSD__) || defined (__APPLE__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 421 | ((struct sockaddr_in *)&ifr.ifr_addr)->sin_len = |
| 422 | sizeof(struct sockaddr_in); |
| 423 | ((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_len = |
| 424 | sizeof(struct sockaddr_in); |
jjako | 243bfe6 | 2004-01-26 23:06:05 +0000 | [diff] [blame] | 425 | #endif |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 426 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 427 | strncpy(ifr.ifr_name, this->devname, IFNAMSIZ); |
| 428 | ifr.ifr_name[IFNAMSIZ - 1] = 0; /* Make sure to terminate */ |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 429 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 430 | /* Create a channel to the NET kernel. */ |
| 431 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 432 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 433 | return -1; |
| 434 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 435 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 436 | if (addr) { /* Set the interface address */ |
| 437 | this->addr.s_addr = addr->s_addr; |
| 438 | memcpy(&((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr, addr, |
| 439 | sizeof(*addr)); |
| 440 | if (ioctl(fd, SIOCSIFADDR, (void *)&ifr) < 0) { |
| 441 | if (errno != EEXIST) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 442 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 443 | "ioctl(SIOCSIFADDR) failed"); |
| 444 | } else { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 445 | SYS_ERR(DTUN, LOGL_NOTICE, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 446 | "ioctl(SIOCSIFADDR): Address already exists"); |
| 447 | } |
| 448 | close(fd); |
| 449 | return -1; |
| 450 | } |
| 451 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 452 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 453 | if (dstaddr) { /* Set the destination address */ |
| 454 | this->dstaddr.s_addr = dstaddr->s_addr; |
| 455 | memcpy(&((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_addr, |
| 456 | dstaddr, sizeof(*dstaddr)); |
| 457 | if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t) & ifr) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 458 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 459 | "ioctl(SIOCSIFDSTADDR) failed"); |
| 460 | close(fd); |
| 461 | return -1; |
| 462 | } |
| 463 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 464 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 465 | if (netmask) { /* Set the netmask */ |
| 466 | this->netmask.s_addr = netmask->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 467 | #if defined(__linux__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 468 | memcpy(&((struct sockaddr_in *)&ifr.ifr_netmask)->sin_addr, |
| 469 | netmask, sizeof(*netmask)); |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 470 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 471 | #elif defined(__FreeBSD__) || defined (__APPLE__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 472 | ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr = |
| 473 | netmask->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 474 | |
| 475 | #elif defined(__sun__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 476 | ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr = |
| 477 | netmask->s_addr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 478 | #else |
| 479 | #error "Unknown platform!" |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 480 | #endif |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 481 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 482 | if (ioctl(fd, SIOCSIFNETMASK, (void *)&ifr) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 483 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 484 | "ioctl(SIOCSIFNETMASK) failed"); |
| 485 | close(fd); |
| 486 | return -1; |
| 487 | } |
| 488 | } |
jjako | 1ea6634 | 2004-01-28 09:27:34 +0000 | [diff] [blame] | 489 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 490 | close(fd); |
| 491 | this->addrs++; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 492 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 493 | /* On linux the route to the interface is set automatically |
| 494 | on FreeBSD we have to do this manually */ |
| 495 | |
| 496 | /* TODO: How does it work on Solaris? */ |
| 497 | |
| 498 | tun_sifflags(this, IFF_UP | IFF_RUNNING); |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 499 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 500 | #if defined(__FreeBSD__) || defined (__APPLE__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 501 | tun_addroute(this, dstaddr, addr, netmask); |
| 502 | this->routes = 1; |
jjako | 1ea6634 | 2004-01-28 09:27:34 +0000 | [diff] [blame] | 503 | #endif |
| 504 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 505 | return 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 506 | } |
| 507 | |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 508 | int tun_route(struct tun_t *this, |
| 509 | struct in_addr *dst, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 510 | struct in_addr *gateway, struct in_addr *mask, int delete) |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 511 | { |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 512 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 513 | /* TODO: Learn how to set routing table on sun */ |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 514 | |
| 515 | #if defined(__linux__) |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 516 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 517 | struct rtentry r; |
| 518 | int fd; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 519 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 520 | memset(&r, '\0', sizeof(r)); |
| 521 | r.rt_flags = RTF_UP | RTF_GATEWAY; /* RTF_HOST not set */ |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 522 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 523 | /* Create a channel to the NET kernel. */ |
| 524 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 525 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 526 | return -1; |
| 527 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 528 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 529 | r.rt_dst.sa_family = AF_INET; |
| 530 | r.rt_gateway.sa_family = AF_INET; |
| 531 | r.rt_genmask.sa_family = AF_INET; |
| 532 | memcpy(&((struct sockaddr_in *)&r.rt_dst)->sin_addr, dst, sizeof(*dst)); |
| 533 | memcpy(&((struct sockaddr_in *)&r.rt_gateway)->sin_addr, gateway, |
| 534 | sizeof(*gateway)); |
| 535 | memcpy(&((struct sockaddr_in *)&r.rt_genmask)->sin_addr, mask, |
| 536 | sizeof(*mask)); |
| 537 | |
| 538 | if (delete) { |
| 539 | if (ioctl(fd, SIOCDELRT, (void *)&r) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 540 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 541 | "ioctl(SIOCDELRT) failed"); |
| 542 | close(fd); |
| 543 | return -1; |
| 544 | } |
| 545 | } else { |
| 546 | if (ioctl(fd, SIOCADDRT, (void *)&r) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 547 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 548 | "ioctl(SIOCADDRT) failed"); |
| 549 | close(fd); |
| 550 | return -1; |
| 551 | } |
| 552 | } |
| 553 | close(fd); |
| 554 | return 0; |
| 555 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 556 | #elif defined(__FreeBSD__) || defined (__APPLE__) |
jjako | 3eaf453 | 2004-01-27 19:47:49 +0000 | [diff] [blame] | 557 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 558 | struct { |
| 559 | struct rt_msghdr rt; |
| 560 | struct sockaddr_in dst; |
| 561 | struct sockaddr_in gate; |
| 562 | struct sockaddr_in mask; |
| 563 | } req; |
jjako | 3eaf453 | 2004-01-27 19:47:49 +0000 | [diff] [blame] | 564 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 565 | int fd; |
| 566 | struct rt_msghdr *rtm; |
jjako | 1ea6634 | 2004-01-28 09:27:34 +0000 | [diff] [blame] | 567 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 568 | if ((fd = socket(AF_ROUTE, SOCK_RAW, 0)) == -1) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 569 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 570 | return -1; |
| 571 | } |
| 572 | |
| 573 | memset(&req, 0x00, sizeof(req)); |
| 574 | |
| 575 | rtm = &req.rt; |
| 576 | |
| 577 | rtm->rtm_msglen = sizeof(req); |
| 578 | rtm->rtm_version = RTM_VERSION; |
| 579 | if (delete) { |
| 580 | rtm->rtm_type = RTM_DELETE; |
| 581 | } else { |
| 582 | rtm->rtm_type = RTM_ADD; |
| 583 | } |
| 584 | rtm->rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; /* TODO */ |
| 585 | rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK; |
| 586 | rtm->rtm_pid = getpid(); |
| 587 | rtm->rtm_seq = 0044; /* TODO */ |
| 588 | |
| 589 | req.dst.sin_family = AF_INET; |
| 590 | req.dst.sin_len = sizeof(req.dst); |
| 591 | req.mask.sin_family = AF_INET; |
| 592 | req.mask.sin_len = sizeof(req.mask); |
| 593 | req.gate.sin_family = AF_INET; |
| 594 | req.gate.sin_len = sizeof(req.gate); |
| 595 | |
| 596 | req.dst.sin_addr.s_addr = dst->s_addr; |
| 597 | req.mask.sin_addr.s_addr = mask->s_addr; |
| 598 | req.gate.sin_addr.s_addr = gateway->s_addr; |
| 599 | |
| 600 | if (write(fd, rtm, rtm->rtm_msglen) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 601 | SYS_ERR(DTUN, LOGL_ERROR, errno, "write() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 602 | close(fd); |
| 603 | return -1; |
| 604 | } |
| 605 | close(fd); |
| 606 | return 0; |
jjako | 1ea6634 | 2004-01-28 09:27:34 +0000 | [diff] [blame] | 607 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 608 | #elif defined(__sun__) |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 609 | SYS_ERR(DTUN, LOGL_NOTICE, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 610 | "Could not set up routing on Solaris. Please add route manually."); |
| 611 | return 0; |
| 612 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 613 | #else |
| 614 | #error "Unknown platform!" |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 615 | #endif |
| 616 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 617 | } |
| 618 | |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 619 | int tun_addroute(struct tun_t *this, |
| 620 | struct in_addr *dst, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 621 | struct in_addr *gateway, struct in_addr *mask) |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 622 | { |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 623 | return tun_route(this, dst, gateway, mask, 0); |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | int tun_delroute(struct tun_t *this, |
| 627 | struct in_addr *dst, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 628 | struct in_addr *gateway, struct in_addr *mask) |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 629 | { |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 630 | return tun_route(this, dst, gateway, mask, 1); |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 631 | } |
| 632 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 633 | int tun_new(struct tun_t **tun) |
| 634 | { |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 635 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 636 | #if defined(__linux__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 637 | struct ifreq ifr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 638 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 639 | #elif defined(__FreeBSD__) || defined (__APPLE__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 640 | char devname[IFNAMSIZ + 5]; /* "/dev/" + ifname */ |
| 641 | int devnum; |
| 642 | struct ifaliasreq areq; |
| 643 | int fd; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 644 | |
| 645 | #elif defined(__sun__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 646 | int if_fd, ppa = -1; |
| 647 | static int ip_fd = 0; |
| 648 | int muxid; |
| 649 | struct ifreq ifr; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 650 | |
jjako | 06e9f12 | 2004-01-19 18:37:58 +0000 | [diff] [blame] | 651 | #else |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 652 | #error "Unknown platform!" |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 653 | #endif |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 654 | |
| 655 | if (!(*tun = calloc(1, sizeof(struct tun_t)))) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 656 | SYS_ERR(DTUN, LOGL_ERROR, errno, "calloc() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 657 | return EOF; |
| 658 | } |
| 659 | |
| 660 | (*tun)->cb_ind = NULL; |
| 661 | (*tun)->addrs = 0; |
| 662 | (*tun)->routes = 0; |
| 663 | |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 664 | #if defined(__linux__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 665 | /* Open the actual tun device */ |
| 666 | if (((*tun)->fd = open("/dev/net/tun", O_RDWR)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 667 | SYS_ERR(DTUN, LOGL_ERROR, errno, "open() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 668 | return -1; |
| 669 | } |
| 670 | |
| 671 | /* Set device flags. For some weird reason this is also the method |
| 672 | used to obtain the network interface name */ |
| 673 | memset(&ifr, 0, sizeof(ifr)); |
| 674 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; /* Tun device, no packet info */ |
| 675 | if (ioctl((*tun)->fd, TUNSETIFF, (void *)&ifr) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 676 | SYS_ERR(DTUN, LOGL_ERROR, errno, "ioctl() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 677 | close((*tun)->fd); |
| 678 | return -1; |
| 679 | } |
| 680 | |
| 681 | strncpy((*tun)->devname, ifr.ifr_name, IFNAMSIZ); |
| 682 | (*tun)->devname[IFNAMSIZ - 1] = 0; |
| 683 | |
| 684 | ioctl((*tun)->fd, TUNSETNOCSUM, 1); /* Disable checksums */ |
| 685 | return 0; |
| 686 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 687 | #elif defined(__FreeBSD__) || defined (__APPLE__) |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 688 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 689 | /* Find suitable device */ |
| 690 | for (devnum = 0; devnum < 255; devnum++) { /* TODO 255 */ |
| 691 | snprintf(devname, sizeof(devname), "/dev/tun%d", devnum); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 692 | if (((*tun)->fd = open(devname, O_RDWR)) >= 0) |
| 693 | break; |
| 694 | if (errno != EBUSY) |
| 695 | break; |
| 696 | } |
| 697 | if ((*tun)->fd < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 698 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 699 | "Can't find tunnel device"); |
| 700 | return -1; |
| 701 | } |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 702 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 703 | snprintf((*tun)->devname, sizeof((*tun)->devname), "tun%d", devnum); |
| 704 | (*tun)->devname[sizeof((*tun)->devname)] = 0; |
jjako | 1f15864 | 2004-02-05 20:39:57 +0000 | [diff] [blame] | 705 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 706 | /* The tun device we found might have "old" IP addresses allocated */ |
| 707 | /* We need to delete those. This problem is not present on Linux */ |
jjako | 1f15864 | 2004-02-05 20:39:57 +0000 | [diff] [blame] | 708 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 709 | memset(&areq, 0, sizeof(areq)); |
jjako | 1f15864 | 2004-02-05 20:39:57 +0000 | [diff] [blame] | 710 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 711 | /* Set up interface name */ |
| 712 | strncpy(areq.ifra_name, (*tun)->devname, IFNAMSIZ); |
| 713 | areq.ifra_name[IFNAMSIZ - 1] = 0; /* Make sure to terminate */ |
jjako | 1f15864 | 2004-02-05 20:39:57 +0000 | [diff] [blame] | 714 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 715 | /* Create a channel to the NET kernel. */ |
| 716 | if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 717 | SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 718 | return -1; |
| 719 | } |
jjako | 1f15864 | 2004-02-05 20:39:57 +0000 | [diff] [blame] | 720 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 721 | /* Delete any IP addresses until SIOCDIFADDR fails */ |
| 722 | while (ioctl(fd, SIOCDIFADDR, (void *)&areq) != -1) ; |
| 723 | |
| 724 | close(fd); |
| 725 | return 0; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 726 | |
| 727 | #elif defined(__sun__) |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 728 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 729 | if ((ip_fd = open("/dev/udp", O_RDWR, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 730 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 731 | "Can't open /dev/udp"); |
| 732 | return -1; |
| 733 | } |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 734 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 735 | if (((*tun)->fd = open("/dev/tun", O_RDWR, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 736 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 737 | "Can't open /dev/tun"); |
| 738 | return -1; |
| 739 | } |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 740 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 741 | /* Assign a new PPA and get its unit number. */ |
| 742 | if ((ppa = ioctl((*tun)->fd, TUNNEWPPA, -1)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 743 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 744 | "Can't assign new interface"); |
| 745 | return -1; |
| 746 | } |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 747 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 748 | if ((if_fd = open("/dev/tun", O_RDWR, 0)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 749 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 750 | "Can't open /dev/tun (2)"); |
| 751 | return -1; |
| 752 | } |
| 753 | if (ioctl(if_fd, I_PUSH, "ip") < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 754 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 755 | "Can't push IP module"); |
| 756 | return -1; |
| 757 | } |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 758 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 759 | /* Assign ppa according to the unit number returned by tun device */ |
| 760 | if (ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 761 | SYS_ERR(DTUN, LOGL_ERROR, errno, "Can't set PPA %d", |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 762 | ppa); |
| 763 | return -1; |
| 764 | } |
| 765 | |
| 766 | /* Link the two streams */ |
| 767 | if ((muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 768 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 769 | "Can't link TUN device to IP"); |
| 770 | return -1; |
| 771 | } |
| 772 | |
| 773 | close(if_fd); |
| 774 | |
| 775 | snprintf((*tun)->devname, sizeof((*tun)->devname), "tun%d", ppa); |
| 776 | (*tun)->devname[sizeof((*tun)->devname)] = 0; |
| 777 | |
| 778 | memset(&ifr, 0, sizeof(ifr)); |
| 779 | strcpy(ifr.ifr_name, (*tun)->devname); |
| 780 | ifr.ifr_ip_muxid = muxid; |
| 781 | |
| 782 | if (ioctl(ip_fd, SIOCSIFMUXID, &ifr) < 0) { |
| 783 | ioctl(ip_fd, I_PUNLINK, muxid); |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 784 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 785 | "Can't set multiplexor id"); |
| 786 | return -1; |
| 787 | } |
| 788 | |
| 789 | /* if (fcntl (fd, F_SETFL, O_NONBLOCK) < 0) |
| 790 | msg (M_ERR, "Set file descriptor to non-blocking failed"); */ |
| 791 | |
| 792 | return 0; |
jjako | 409b855 | 2004-02-04 22:57:41 +0000 | [diff] [blame] | 793 | |
| 794 | #else |
| 795 | #error "Unknown platform!" |
| 796 | #endif |
| 797 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 798 | } |
| 799 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 800 | int tun_free(struct tun_t *tun) |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 801 | { |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 802 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 803 | if (tun->routes) { |
| 804 | tun_delroute(tun, &tun->dstaddr, &tun->addr, &tun->netmask); |
| 805 | } |
jjako | 163b455 | 2004-12-30 15:33:58 +0000 | [diff] [blame] | 806 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 807 | if (close(tun->fd)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 808 | SYS_ERR(DTUN, LOGL_ERROR, errno, "close() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 809 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 810 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 811 | /* TODO: For solaris we need to unlink streams */ |
jjako | ec89e9f | 2004-01-10 06:38:43 +0000 | [diff] [blame] | 812 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 813 | free(tun); |
| 814 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 815 | } |
| 816 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 817 | int tun_set_cb_ind(struct tun_t *this, |
| 818 | int (*cb_ind) (struct tun_t * tun, void *pack, unsigned len)) |
| 819 | { |
| 820 | this->cb_ind = cb_ind; |
| 821 | return 0; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 822 | } |
| 823 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 824 | int tun_decaps(struct tun_t *this) |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 825 | { |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 826 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 827 | #if defined(__linux__) || defined (__FreeBSD__) || defined (__APPLE__) |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 828 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 829 | unsigned char buffer[PACKET_MAX]; |
| 830 | int status; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 831 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 832 | if ((status = read(this->fd, buffer, sizeof(buffer))) <= 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 833 | SYS_ERR(DTUN, LOGL_ERROR, errno, "read() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 834 | return -1; |
| 835 | } |
| 836 | |
| 837 | if (this->cb_ind) |
| 838 | return this->cb_ind(this, buffer, status); |
| 839 | |
| 840 | return 0; |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 841 | |
| 842 | #elif defined (__sun__) |
| 843 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 844 | unsigned char buffer[PACKET_MAX]; |
| 845 | struct strbuf sbuf; |
| 846 | int f = 0; |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 847 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 848 | sbuf.maxlen = PACKET_MAX; |
| 849 | sbuf.buf = buffer; |
| 850 | if (getmsg(this->fd, NULL, &sbuf, &f) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 851 | SYS_ERR(DTUN, LOGL_ERROR, errno, "getmsg() failed"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 852 | return -1; |
| 853 | } |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 854 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 855 | if (this->cb_ind) |
| 856 | return this->cb_ind(this, buffer, sbuf.len); |
| 857 | |
| 858 | return 0; |
| 859 | |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 860 | #endif |
| 861 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | int tun_encaps(struct tun_t *tun, void *pack, unsigned len) |
| 865 | { |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 866 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 867 | #if defined(__linux__) || defined (__FreeBSD__) || defined (__APPLE__) |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 868 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 869 | return write(tun->fd, pack, len); |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 870 | |
| 871 | #elif defined (__sun__) |
| 872 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 873 | struct strbuf sbuf; |
| 874 | sbuf.len = len; |
| 875 | sbuf.buf = pack; |
| 876 | return putmsg(tun->fd, NULL, &sbuf, 0); |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 877 | |
| 878 | #endif |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 879 | } |
| 880 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 881 | int tun_runscript(struct tun_t *tun, char *script) |
| 882 | { |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 883 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 884 | char buf[TUN_SCRIPTSIZE]; |
| 885 | char snet[TUN_ADDRSIZE]; |
| 886 | char smask[TUN_ADDRSIZE]; |
| 887 | int rc; |
| 888 | |
| 889 | strncpy(snet, inet_ntoa(tun->addr), sizeof(snet)); |
| 890 | snet[sizeof(snet) - 1] = 0; |
| 891 | strncpy(smask, inet_ntoa(tun->netmask), sizeof(smask)); |
| 892 | smask[sizeof(smask) - 1] = 0; |
| 893 | |
| 894 | /* system("ipup /dev/tun0 192.168.0.10 255.255.255.0"); */ |
| 895 | snprintf(buf, sizeof(buf), "%s %s %s %s", |
| 896 | script, tun->devname, snet, smask); |
| 897 | buf[sizeof(buf) - 1] = 0; |
| 898 | rc = system(buf); |
| 899 | if (rc == -1) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 900 | SYS_ERR(DTUN, LOGL_ERROR, errno, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 901 | "Error executing command %s", buf); |
| 902 | return -1; |
| 903 | } |
| 904 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 905 | } |