1 /* $KAME: rtsock.c,v 1.3 2000/10/10 08:46:45 itojun Exp $ */
5 * SPDX-License-Identifier: BSD-3-Clause
7 * Copyright (C) 2000 WIDE Project.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/param.h>
36 #include <sys/capsicum.h>
37 #include <sys/queue.h>
38 #include <sys/socket.h>
43 #include <net/route.h>
44 #include <net/if_dl.h>
46 #include <netinet/in.h>
47 #include <netinet/ip6.h>
48 #include <netinet/icmp6.h>
50 #include <capsicum_helpers.h>
62 static int rtsock_input_ifannounce(int, struct rt_msghdr *, char *);
67 int (*func)(int, struct rt_msghdr *, char *);
68 } rtsock_dispatch[] = {
69 { RTM_IFANNOUNCE, sizeof(struct if_announcemsghdr),
70 rtsock_input_ifannounce },
80 s = socket(PF_ROUTE, SOCK_RAW, 0);
83 cap_rights_init(&rights, CAP_EVENT, CAP_READ);
84 if (caph_rights_limit(s, &rights) != 0) {
99 struct rt_msghdr *rtm;
103 const ssize_t lenlim =
104 offsetof(struct rt_msghdr, rtm_msglen) + sizeof(rtm->rtm_msglen);
106 n = read(s, msg, sizeof(msg));
109 for (next = msg; next < lim; next += len) {
110 rtm = (struct rt_msghdr *)(void *)next;
111 if (lim - next < lenlim)
113 len = rtm->rtm_msglen;
118 warnmsg(LOG_INFO, __func__,
119 "rtmsg type %d, len=%lu", rtm->rtm_type,
123 for (idx = 0; rtsock_dispatch[idx].func; idx++) {
124 if (rtm->rtm_type != rtsock_dispatch[idx].type)
126 if (rtm->rtm_msglen < rtsock_dispatch[idx].minlen) {
127 warnmsg(LOG_INFO, __func__,
128 "rtmsg type %d too short!", rtm->rtm_type);
132 ret = (*rtsock_dispatch[idx].func)(s, rtm, lim);
141 rtsock_input_ifannounce(int s __unused, struct rt_msghdr *rtm, char *lim)
143 struct if_announcemsghdr *ifan;
146 ifan = (struct if_announcemsghdr *)rtm;
147 if ((char *)(ifan + 1) > lim)
150 switch (ifan->ifan_what) {
153 * XXX for NetBSD 1.5, interface index will monotonically be
154 * increased as new pcmcia card gets inserted.
155 * we may be able to do a name-based interface match,
156 * and call ifreconfig() to enable the interface again.
158 warnmsg(LOG_INFO, __func__,
159 "interface %s inserted", ifan->ifan_name);
162 warnmsg(LOG_WARNING, __func__,
163 "interface %s removed", ifan->ifan_name);
164 ifi = find_ifinfo(ifan->ifan_index);
167 warnmsg(LOG_INFO, __func__,
168 "bring interface %s to DOWN state",
171 ifi->state = IFS_DOWN;