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