The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 1 | /* |
| 2 | * dhcpcd - DHCP client daemon |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 3 | * Copyright (c) 2006-2010 Roy Marples <roy@marples.name> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 4 | * All rights reserved |
| 5 | |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 28 | #include <sys/ioctl.h> |
| 29 | #include <sys/param.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 30 | #include <sys/socket.h> |
| 31 | #include <sys/stat.h> |
| 32 | #include <sys/sysctl.h> |
| 33 | #include <sys/types.h> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 34 | |
| 35 | #include <arpa/inet.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 36 | #include <net/if.h> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 37 | #include <net/if_dl.h> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 38 | #include <net/route.h> |
| 39 | #include <netinet/in.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 40 | #ifdef __DragonFly__ |
| 41 | # include <netproto/802_11/ieee80211_ioctl.h> |
| 42 | #elif __APPLE__ |
| 43 | /* FIXME: Add apple includes so we can work out SSID */ |
| 44 | #else |
| 45 | # include <net80211/ieee80211_ioctl.h> |
| 46 | #endif |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 47 | |
| 48 | #include <errno.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 49 | #include <fnmatch.h> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 50 | #include <stddef.h> |
| 51 | #include <stdio.h> |
| 52 | #include <stdlib.h> |
| 53 | #include <string.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 54 | #include <syslog.h> |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 55 | #include <unistd.h> |
| 56 | |
| 57 | #include "config.h" |
| 58 | #include "common.h" |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 59 | #include "configure.h" |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 60 | #include "dhcp.h" |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 61 | #include "if-options.h" |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 62 | #include "net.h" |
| 63 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 64 | #define ROUNDUP(a) \ |
| 65 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) |
| 66 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) |
| 67 | |
| 68 | /* FIXME: Why do we need to check for sa_family 255 */ |
| 69 | #define COPYOUT(sin, sa) \ |
| 70 | sin.s_addr = ((sa) != NULL) ? \ |
| 71 | (((struct sockaddr_in *)(void *)sa)->sin_addr).s_addr : 0 |
| 72 | |
| 73 | static int r_fd = -1; |
| 74 | static char *link_buf; |
| 75 | static ssize_t link_buflen; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 76 | |
| 77 | int |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 78 | if_init(_unused struct interface *iface) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 79 | { |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 80 | /* BSD promotes secondary address by default */ |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | int |
| 85 | if_conf(_unused struct interface *iface) |
| 86 | { |
| 87 | /* No extra checks needed on BSD */ |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | init_sockets(void) |
| 93 | { |
| 94 | if ((socket_afnet = socket(AF_INET, SOCK_DGRAM, 0)) == -1) |
| 95 | return -1; |
| 96 | set_cloexec(socket_afnet); |
| 97 | if ((r_fd = socket(PF_ROUTE, SOCK_RAW, 0)) == -1) |
| 98 | return -1; |
| 99 | set_cloexec(r_fd); |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | int |
| 104 | getifssid(const char *ifname, char *ssid) |
| 105 | { |
| 106 | int retval = -1; |
| 107 | #if defined(SIOCG80211NWID) |
| 108 | struct ifreq ifr; |
| 109 | struct ieee80211_nwid nwid; |
| 110 | #elif defined(IEEE80211_IOC_SSID) |
| 111 | struct ieee80211req ireq; |
| 112 | char nwid[IEEE80211_NWID_LEN + 1]; |
| 113 | #endif |
| 114 | |
| 115 | #if defined(SIOCG80211NWID) /* NetBSD */ |
| 116 | memset(&ifr, 0, sizeof(ifr)); |
| 117 | strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
| 118 | memset(&nwid, 0, sizeof(nwid)); |
| 119 | ifr.ifr_data = (void *)&nwid; |
| 120 | if (ioctl(socket_afnet, SIOCG80211NWID, &ifr) == 0) { |
| 121 | retval = nwid.i_len; |
| 122 | memcpy(ssid, nwid.i_nwid, nwid.i_len); |
| 123 | ssid[nwid.i_len] = '\0'; |
| 124 | } |
| 125 | #elif defined(IEEE80211_IOC_SSID) /* FreeBSD */ |
| 126 | memset(&ireq, 0, sizeof(ireq)); |
| 127 | strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name)); |
| 128 | ireq.i_type = IEEE80211_IOC_SSID; |
| 129 | ireq.i_val = -1; |
| 130 | ireq.i_data = &nwid; |
| 131 | if (ioctl(socket_afnet, SIOCG80211, &ireq) == 0) { |
| 132 | retval = ireq.i_len; |
| 133 | memcpy(ssid, nwid, ireq.i_len); |
| 134 | ssid[ireq.i_len] = '\0'; |
| 135 | } |
| 136 | #endif |
| 137 | return retval; |
| 138 | } |
| 139 | |
| 140 | int |
| 141 | if_address(const struct interface *iface, const struct in_addr *address, |
| 142 | const struct in_addr *netmask, const struct in_addr *broadcast, |
| 143 | int action) |
| 144 | { |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 145 | int retval; |
| 146 | struct ifaliasreq ifa; |
| 147 | union { |
| 148 | struct sockaddr *sa; |
| 149 | struct sockaddr_in *sin; |
| 150 | } _s; |
| 151 | |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 152 | memset(&ifa, 0, sizeof(ifa)); |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 153 | strlcpy(ifa.ifra_name, iface->name, sizeof(ifa.ifra_name)); |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 154 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 155 | #define ADDADDR(_var, _addr) { \ |
| 156 | _s.sa = &_var; \ |
| 157 | _s.sin->sin_family = AF_INET; \ |
| 158 | _s.sin->sin_len = sizeof(*_s.sin); \ |
| 159 | memcpy(&_s.sin->sin_addr, _addr, sizeof(_s.sin->sin_addr)); \ |
| 160 | } |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 161 | |
| 162 | ADDADDR(ifa.ifra_addr, address); |
| 163 | ADDADDR(ifa.ifra_mask, netmask); |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 164 | if (action >= 0 && broadcast) { |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 165 | ADDADDR(ifa.ifra_broadaddr, broadcast); |
| 166 | } |
| 167 | #undef ADDADDR |
| 168 | |
| 169 | if (action < 0) |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 170 | retval = ioctl(socket_afnet, SIOCDIFADDR, &ifa); |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 171 | else |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 172 | retval = ioctl(socket_afnet, SIOCAIFADDR, &ifa); |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 173 | return retval; |
| 174 | } |
| 175 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 176 | /* ARGSUSED4 */ |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 177 | int |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 178 | if_route(const struct interface *iface, const struct in_addr *dest, |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 179 | const struct in_addr *net, const struct in_addr *gate, |
| 180 | _unused int metric, int action) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 181 | { |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 182 | union sockunion { |
| 183 | struct sockaddr sa; |
| 184 | struct sockaddr_in sin; |
| 185 | #ifdef INET6 |
| 186 | struct sockaddr_in6 sin6; |
| 187 | #endif |
| 188 | struct sockaddr_dl sdl; |
| 189 | struct sockaddr_storage ss; |
| 190 | } su; |
| 191 | struct rtm |
| 192 | { |
| 193 | struct rt_msghdr hdr; |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 194 | char buffer[sizeof(su) * 4]; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 195 | } rtm; |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 196 | char *bp = rtm.buffer, *p; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 197 | size_t l; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 198 | int retval = 0; |
| 199 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 200 | #define ADDSU(_su) { \ |
| 201 | l = ROUNDUP(_su.sa.sa_len); \ |
| 202 | memcpy(bp, &(_su), l); \ |
| 203 | bp += l; \ |
| 204 | } |
| 205 | #define ADDADDR(_a) { \ |
| 206 | memset (&su, 0, sizeof(su)); \ |
| 207 | su.sin.sin_family = AF_INET; \ |
| 208 | su.sin.sin_len = sizeof(su.sin); \ |
| 209 | memcpy (&su.sin.sin_addr, _a, sizeof(su.sin.sin_addr)); \ |
| 210 | ADDSU(su); \ |
| 211 | } |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 212 | |
| 213 | memset(&rtm, 0, sizeof(rtm)); |
| 214 | rtm.hdr.rtm_version = RTM_VERSION; |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 215 | rtm.hdr.rtm_seq = 1; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 216 | if (action == 0) |
| 217 | rtm.hdr.rtm_type = RTM_CHANGE; |
| 218 | else if (action > 0) |
| 219 | rtm.hdr.rtm_type = RTM_ADD; |
| 220 | else |
| 221 | rtm.hdr.rtm_type = RTM_DELETE; |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 222 | rtm.hdr.rtm_flags = RTF_UP; |
| 223 | /* None interface subnet routes are static. */ |
| 224 | if (gate->s_addr != INADDR_ANY || |
| 225 | net->s_addr != iface->net.s_addr || |
| 226 | dest->s_addr != (iface->addr.s_addr & iface->net.s_addr)) |
| 227 | rtm.hdr.rtm_flags |= RTF_STATIC; |
| 228 | rtm.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY; |
| 229 | if (dest->s_addr == gate->s_addr && net->s_addr == INADDR_BROADCAST) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 230 | rtm.hdr.rtm_flags |= RTF_HOST; |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 231 | else { |
| 232 | rtm.hdr.rtm_addrs |= RTA_NETMASK; |
| 233 | if (rtm.hdr.rtm_flags & RTF_STATIC) |
| 234 | rtm.hdr.rtm_flags |= RTF_GATEWAY; |
| 235 | if (action >= 0) |
| 236 | rtm.hdr.rtm_addrs |= RTA_IFA; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 237 | } |
| 238 | |
Dmitry Shmidt | 938bc38 | 2010-01-08 10:47:26 -0800 | [diff] [blame] | 239 | ADDADDR(dest); |
| 240 | if (rtm.hdr.rtm_flags & RTF_HOST || |
| 241 | !(rtm.hdr.rtm_flags & RTF_STATIC)) |
| 242 | { |
| 243 | /* Make us a link layer socket for the host gateway */ |
| 244 | memset(&su, 0, sizeof(su)); |
| 245 | su.sdl.sdl_len = sizeof(struct sockaddr_dl); |
| 246 | link_addr(iface->name, &su.sdl); |
| 247 | ADDSU(su); |
| 248 | } else |
| 249 | ADDADDR(gate); |
| 250 | |
| 251 | if (rtm.hdr.rtm_addrs & RTA_NETMASK) { |
| 252 | /* Ensure that netmask is set correctly */ |
| 253 | memset(&su, 0, sizeof(su)); |
| 254 | su.sin.sin_family = AF_INET; |
| 255 | su.sin.sin_len = sizeof(su.sin); |
| 256 | memcpy(&su.sin.sin_addr, &net->s_addr, sizeof(su.sin.sin_addr)); |
| 257 | p = su.sa.sa_len + (char *)&su; |
| 258 | for (su.sa.sa_len = 0; p > (char *)&su;) |
| 259 | if (*--p != 0) { |
| 260 | su.sa.sa_len = 1 + p - (char *)&su; |
| 261 | break; |
| 262 | } |
| 263 | ADDSU(su); |
| 264 | } |
| 265 | |
| 266 | if (rtm.hdr.rtm_addrs & RTA_IFA) |
| 267 | ADDADDR(&iface->addr); |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 268 | |
| 269 | rtm.hdr.rtm_msglen = l = bp - (char *)&rtm; |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 270 | if (write(r_fd, &rtm, l) == -1) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 271 | retval = -1; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 272 | return retval; |
| 273 | } |
| 274 | |
| 275 | int |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 276 | open_link_socket(void) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 277 | { |
| 278 | int fd; |
| 279 | |
| 280 | fd = socket(PF_ROUTE, SOCK_RAW, 0); |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 281 | if (fd != -1) { |
| 282 | set_cloexec(fd); |
| 283 | set_nonblock(fd); |
| 284 | } |
| 285 | return fd; |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 286 | } |
| 287 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 288 | static void |
| 289 | get_addrs(int type, char *cp, struct sockaddr **sa) |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 290 | { |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 291 | int i; |
| 292 | |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 293 | for (i = 0; i < RTAX_MAX; i++) { |
| 294 | if (type & (1 << i)) { |
| 295 | sa[i] = (struct sockaddr *)cp; |
| 296 | #ifdef DEBUG |
| 297 | printf ("got %d %d %s\n", i, sa[i]->sa_family, |
| 298 | inet_ntoa(((struct sockaddr_in *)sa[i])-> |
| 299 | sin_addr)); |
| 300 | #endif |
| 301 | ADVANCE(cp, sa[i]); |
| 302 | } else |
| 303 | sa[i] = NULL; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | int |
| 308 | manage_link(int fd) |
| 309 | { |
| 310 | char *p, *e, *cp; |
| 311 | char ifname[IF_NAMESIZE]; |
| 312 | ssize_t bytes; |
| 313 | struct rt_msghdr *rtm; |
| 314 | struct if_announcemsghdr *ifan; |
| 315 | struct if_msghdr *ifm; |
| 316 | struct ifa_msghdr *ifam; |
| 317 | struct rt rt; |
| 318 | struct sockaddr *sa, *rti_info[RTAX_MAX]; |
| 319 | int len; |
| 320 | #ifdef RTM_CHGADDR |
| 321 | struct sockaddr_dl sdl; |
| 322 | unsigned char *hwaddr; |
| 323 | #endif |
| 324 | |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 325 | for (;;) { |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 326 | if (ioctl(fd, FIONREAD, &len) == -1) |
| 327 | return -1; |
| 328 | if (link_buflen < len) { |
| 329 | p = realloc(link_buf, len); |
| 330 | if (p == NULL) |
| 331 | return -1; |
| 332 | link_buf = p; |
| 333 | link_buflen = len; |
| 334 | } |
| 335 | bytes = read(fd, link_buf, link_buflen); |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 336 | if (bytes == -1) { |
| 337 | if (errno == EAGAIN) |
| 338 | return 0; |
| 339 | if (errno == EINTR) |
| 340 | continue; |
| 341 | return -1; |
| 342 | } |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame^] | 343 | e = link_buf + bytes; |
| 344 | for (p = link_buf; p < e; p += rtm->rtm_msglen) { |
| 345 | rtm = (struct rt_msghdr *)(void *)p; |
| 346 | switch(rtm->rtm_type) { |
| 347 | #ifdef RTM_IFANNOUNCE |
| 348 | case RTM_IFANNOUNCE: |
| 349 | ifan = (struct if_announcemsghdr *)(void *)p; |
| 350 | switch(ifan->ifan_what) { |
| 351 | case IFAN_ARRIVAL: |
| 352 | handle_interface(1, ifan->ifan_name); |
| 353 | break; |
| 354 | case IFAN_DEPARTURE: |
| 355 | handle_interface(-1, ifan->ifan_name); |
| 356 | break; |
| 357 | } |
| 358 | break; |
| 359 | #endif |
| 360 | case RTM_IFINFO: |
| 361 | ifm = (struct if_msghdr *)(void *)p; |
| 362 | memset(ifname, 0, sizeof(ifname)); |
| 363 | if (if_indextoname(ifm->ifm_index, ifname)) |
| 364 | handle_interface(0, ifname); |
| 365 | break; |
| 366 | case RTM_DELETE: |
| 367 | if (!(rtm->rtm_addrs & RTA_DST) || |
| 368 | !(rtm->rtm_addrs & RTA_GATEWAY) || |
| 369 | !(rtm->rtm_addrs & RTA_NETMASK)) |
| 370 | break; |
| 371 | if (rtm->rtm_pid == getpid()) |
| 372 | break; |
| 373 | cp = (char *)(void *)(rtm + 1); |
| 374 | sa = (struct sockaddr *)(void *)cp; |
| 375 | if (sa->sa_family != AF_INET) |
| 376 | break; |
| 377 | get_addrs(rtm->rtm_addrs, cp, rti_info); |
| 378 | rt.iface = NULL; |
| 379 | rt.next = NULL; |
| 380 | COPYOUT(rt.dest, rti_info[RTAX_DST]); |
| 381 | COPYOUT(rt.net, rti_info[RTAX_NETMASK]); |
| 382 | COPYOUT(rt.gate, rti_info[RTAX_GATEWAY]); |
| 383 | route_deleted(&rt); |
| 384 | break; |
| 385 | #ifdef RTM_CHGADDR |
| 386 | case RTM_CHGADDR: /* FALLTHROUGH */ |
| 387 | #endif |
| 388 | case RTM_DELADDR: /* FALLTHROUGH */ |
| 389 | case RTM_NEWADDR: |
| 390 | ifam = (struct ifa_msghdr *)(void *)p; |
| 391 | if (!if_indextoname(ifam->ifam_index, ifname)) |
| 392 | break; |
| 393 | cp = (char *)(void *)(ifam + 1); |
| 394 | get_addrs(ifam->ifam_addrs, cp, rti_info); |
| 395 | if (rti_info[RTAX_IFA] == NULL) |
| 396 | break; |
| 397 | switch (rti_info[RTAX_IFA]->sa_family) { |
| 398 | #ifdef RTM_CHGADDR |
| 399 | case AF_LINK: |
| 400 | if (rtm->rtm_type != RTM_CHGADDR) |
| 401 | break; |
| 402 | memcpy(&sdl, rti_info[RTAX_IFA], |
| 403 | rti_info[RTAX_IFA]->sa_len); |
| 404 | hwaddr = xmalloc(sdl.sdl_alen); |
| 405 | memcpy(hwaddr, LLADDR(&sdl), |
| 406 | sdl.sdl_alen); |
| 407 | handle_hwaddr(ifname, hwaddr, |
| 408 | sdl.sdl_alen); |
| 409 | break; |
| 410 | #endif |
| 411 | case AF_INET: |
| 412 | case 255: /* FIXME: Why 255? */ |
| 413 | COPYOUT(rt.dest, rti_info[RTAX_IFA]); |
| 414 | COPYOUT(rt.net, rti_info[RTAX_NETMASK]); |
| 415 | COPYOUT(rt.gate, rti_info[RTAX_BRD]); |
| 416 | handle_ifa(rtm->rtm_type, ifname, |
| 417 | &rt.dest, &rt.net, &rt.gate); |
| 418 | break; |
| 419 | } |
| 420 | break; |
| 421 | } |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 422 | } |
| 423 | } |
The Android Open Source Project | f7c5421 | 2009-03-03 19:29:22 -0800 | [diff] [blame] | 424 | } |