4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <avahi-common/malloc.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
39 #include <sys/sysctl.h>
40 #include <net/route.h>
42 #include <netinet/in.h>
43 #include <net/if_dl.h>
45 #include <arpa/inet.h>
50 #include "iface-pfroute.h"
53 static void rtm_info(struct rt_msghdr *rtm, AvahiInterfaceMonitor *m)
56 struct if_msghdr *ifm = (struct if_msghdr *)rtm;
57 struct sockaddr_dl *sdl = (struct sockaddr_dl *)(ifm + 1);
59 if (sdl->sdl_family != AF_LINK)
62 if (ifm->ifm_addrs == 0 && ifm->ifm_index > 0) {
63 if (!(hw = avahi_interface_monitor_get_hw_interface(m, (AvahiIfIndex) ifm->ifm_index)))
65 avahi_hw_interface_free(hw, 0);
69 if (!(hw = avahi_interface_monitor_get_hw_interface(m, ifm->ifm_index)))
70 if (!(hw = avahi_hw_interface_new(m, (AvahiIfIndex) ifm->ifm_index)))
74 (ifm->ifm_flags & IFF_UP) &&
75 (!m->server->config.use_iff_running || (ifm->ifm_flags & IFF_RUNNING)) &&
76 !(ifm->ifm_flags & IFF_LOOPBACK) &&
77 (ifm->ifm_flags & IFF_MULTICAST) &&
78 !(ifm->ifm_flags & IFF_POINTOPOINT);
81 hw->name = avahi_strndup(sdl->sdl_data, sdl->sdl_nlen);
83 hw->mtu = ifm->ifm_data.ifi_mtu;
85 hw->mac_address_size = sdl->sdl_alen;
86 if (hw->mac_address_size > AVAHI_MAX_MAC_ADDRESS)
87 hw->mac_address_size = AVAHI_MAX_MAC_ADDRESS;
89 memcpy(hw->mac_address, sdl->sdl_data + sdl->sdl_nlen, hw->mac_address_size);
91 printf("======\n name: %s\n index:%d\n mtu:%d\n mac:%s\n flags_ok:%d\n======",
94 avahi_format_mac_address(hw->mac_address, hw->mac_address_size),
97 avahi_hw_interface_check_relevant(hw);
98 avahi_hw_interface_update_rrs(hw, 0);
102 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
103 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
105 static void rtm_addr(struct rt_msghdr *rtm, AvahiInterfaceMonitor *m)
107 AvahiInterface *iface;
110 struct ifa_msghdr *ifam = (struct ifa_msghdr *) rtm;
111 char *cp = (char *)(ifam + 1);
112 int addrs = ifam->ifam_addrs;
118 for(i = 1; i; i <<=1)
121 sa = (struct sockaddr *)cp;
123 /* interface addr sockaddr present */
124 if (i & addrs && i & RTA_BRD)
126 if(sa->sa_family == AF_INET)
128 struct in_addr in = ((struct sockaddr_in *)sa)->sin_addr;
133 if(sa->sa_family == AF_INET6)
135 /* struct sockaddr_in6 sin6; */
148 static void parse_rtmsg(struct rt_msghdr *rtm, int msglen, AvahiInterfaceMonitor *m)
153 if (rtm->rtm_version != RTM_VERSION) {
154 avahi_log_warn("routing message version %d not understood\n",
159 switch (rtm->rtm_type) {
174 static int wild_dump_interfaces(AvahiInterfaceMonitor *m)
178 char *buf, *lim, *next, count = 0;
179 struct rt_msghdr *rtm;
184 mib[2] = 0; /* protocol */
185 mib[3] = 0; /* wildcard address family */
186 mib[4] = NET_RT_IFLIST;
187 mib[5] = 0; /* no flags */
188 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
189 err(EX_OSERR, "route-sysctl-estimate");
190 if ((buf = malloc(needed)) == NULL)
191 errx(EX_OSERR, "malloc failed");
192 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
193 if (errno == ENOMEM && count++ < 10) {
194 warnx("Routing table grew, retrying");
199 err(EX_OSERR, "actual retrieval of interface table");
202 for (next = buf; next < lim; next += rtm->rtm_msglen) {
203 rtm = (struct rt_msghdr *)next;
204 parse_rtmsg(rtm, rtm->rtm_msglen, m);
209 static void socket_event(AvahiWatch *w, int fd, AvahiWatchEvent event,void *userdata) {
210 AvahiInterfaceMonitor *m = (AvahiInterfaceMonitor *)userdata;
211 AvahiPfRoute *nl = m->osdep.pfroute;
218 assert(fd == nl->fd);
221 time_t now = time(NULL);
222 if((bytes = recv(nl->fd, msg, 2048, MSG_DONTWAIT)) < 0) {
223 if (errno == EAGAIN || errno == EINTR)
225 avahi_log_error(__FILE__": recv() failed: %s", strerror(errno));
229 (void) printf("\ngot message of size %d on %s", bytes, ctime(&now));
230 printf("parse_rtmsg\n");
231 parse_rtmsg((struct rt_msghdr *)msg, bytes ,m);
236 int avahi_interface_monitor_init_osdep(AvahiInterfaceMonitor *m) {
238 m->osdep.pfroute = NULL;
242 if ((fd = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC)) < 0) {
243 avahi_log_error(__FILE__": socket(PF_ROUTE): %s", strerror(errno));
247 if (!(m->osdep.pfroute = avahi_new(AvahiPfRoute , 1))) {
248 avahi_log_error(__FILE__": avahi_new() failed.");
251 m->osdep.pfroute->fd = fd;
253 if (!(m->osdep.pfroute->watch = m->server->poll_api->watch_new(m->server->poll_api,
254 m->osdep.pfroute->fd,
258 avahi_log_error(__FILE__": Failed to create watch.");
262 printf("avahi_interface_monitor_init_osdep\n");
267 if (m->osdep.pfroute) {
268 if (m->osdep.pfroute->watch)
269 m->osdep.pfroute->poll_api->watch_free(m->osdep.pfroute->watch);
274 m->osdep.pfroute = NULL;
280 void avahi_interface_monitor_free_osdep(AvahiInterfaceMonitor *m) {
283 if (m->osdep.pfroute) {
284 if (m->osdep.pfroute->watch)
285 m->osdep.pfroute->poll_api->watch_free(m->osdep.pfroute->watch);
287 if (m->osdep.pfroute->fd >= 0)
288 close(m->osdep.pfroute->fd);
290 m->osdep.pfroute = NULL;
294 void avahi_interface_monitor_sync(AvahiInterfaceMonitor *m) {
297 wild_dump_interfaces(m);