diff options
Diffstat (limited to 'usr.sbin/rtsold/probe.c')
| -rw-r--r-- | usr.sbin/rtsold/probe.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/usr.sbin/rtsold/probe.c b/usr.sbin/rtsold/probe.c deleted file mode 100644 index 6d0ea79..0000000 --- a/usr.sbin/rtsold/probe.c +++ /dev/null @@ -1,184 +0,0 @@ -/* $KAME: probe.c,v 1.17 2003/10/05 00:09:36 itojun Exp $ */ - -/* - * Copyright (C) 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/uio.h> -#include <sys/queue.h> - -#include <net/if.h> -#include <net/if_var.h> -#include <net/if_dl.h> - -#include <netinet/in.h> -#include <netinet6/in6_var.h> -#include <netinet/icmp6.h> -#include <netinet6/nd6.h> - -#include <arpa/inet.h> - -#include <errno.h> -#include <unistd.h> -#include <string.h> -#include <syslog.h> -#include <stdlib.h> - -#include "rtsold.h" - -static struct msghdr sndmhdr; -static struct iovec sndiov[2]; -static int probesock; -static void sendprobe(struct in6_addr *, struct ifinfo *); - -int -probe_init(void) -{ - int scmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) + - CMSG_SPACE(sizeof(int)); - static u_char *sndcmsgbuf = NULL; - - if (sndcmsgbuf == NULL && - (sndcmsgbuf = (u_char *)malloc(scmsglen)) == NULL) { - warnmsg(LOG_ERR, __func__, "malloc failed"); - return(-1); - } - - if ((probesock = socket(AF_INET6, SOCK_RAW, IPPROTO_NONE)) < 0) { - warnmsg(LOG_ERR, __func__, "socket: %s", strerror(errno)); - return(-1); - } - - /* make the socket send-only */ - if (shutdown(probesock, 0)) { - warnmsg(LOG_ERR, __func__, "shutdown: %s", strerror(errno)); - return(-1); - } - - /* initialize msghdr for sending packets */ - sndmhdr.msg_namelen = sizeof(struct sockaddr_in6); - sndmhdr.msg_iov = sndiov; - sndmhdr.msg_iovlen = 1; - sndmhdr.msg_control = (caddr_t)sndcmsgbuf; - sndmhdr.msg_controllen = scmsglen; - return(0); -} - -/* - * Probe if each router in the default router list is still alive. - */ -void -defrouter_probe(struct ifinfo *ifinfo) -{ - u_char ntopbuf[INET6_ADDRSTRLEN]; - struct in6_drlist dr; - int s, i; - int ifindex = ifinfo->sdl->sdl_index; - - if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { - warnmsg(LOG_ERR, __func__, "socket: %s", strerror(errno)); - return; - } - memset(&dr, 0, sizeof(dr)); - strlcpy(dr.ifname, "lo0", sizeof dr.ifname); /* dummy interface */ - if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { - warnmsg(LOG_ERR, __func__, "ioctl(SIOCGDRLST_IN6): %s", - strerror(errno)); - goto closeandend; - } - - for (i = 0; i < DRLSTSIZ && dr.defrouter[i].if_index; i++) { - if (ifindex && dr.defrouter[i].if_index == ifindex) { - /* sanity check */ - if (!IN6_IS_ADDR_LINKLOCAL(&dr.defrouter[i].rtaddr)) { - warnmsg(LOG_ERR, __func__, - "default router list contains a " - "non-link-local address(%s)", - inet_ntop(AF_INET6, - &dr.defrouter[i].rtaddr, - ntopbuf, INET6_ADDRSTRLEN)); - continue; /* ignore the address */ - } - sendprobe(&dr.defrouter[i].rtaddr, ifinfo); - } - } - -closeandend: - close(s); -} - -static void -sendprobe(struct in6_addr *addr, struct ifinfo *ifinfo) -{ - u_char ntopbuf[INET6_ADDRSTRLEN], ifnamebuf[IFNAMSIZ]; - struct sockaddr_in6 sa6_probe; - struct in6_pktinfo *pi; - struct cmsghdr *cm; - u_int32_t ifindex = ifinfo->sdl->sdl_index; - int hoplimit = 1; - - memset(&sa6_probe, 0, sizeof(sa6_probe)); - sa6_probe.sin6_family = AF_INET6; - sa6_probe.sin6_len = sizeof(sa6_probe); - sa6_probe.sin6_addr = *addr; - sa6_probe.sin6_scope_id = ifinfo->linkid; - - sndmhdr.msg_name = (caddr_t)&sa6_probe; - sndmhdr.msg_iov[0].iov_base = NULL; - sndmhdr.msg_iov[0].iov_len = 0; - - cm = CMSG_FIRSTHDR(&sndmhdr); - /* specify the outgoing interface */ - cm->cmsg_level = IPPROTO_IPV6; - cm->cmsg_type = IPV6_PKTINFO; - cm->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); - pi = (struct in6_pktinfo *)CMSG_DATA(cm); - memset(&pi->ipi6_addr, 0, sizeof(pi->ipi6_addr)); /*XXX*/ - pi->ipi6_ifindex = ifindex; - - /* specify the hop limit of the packet for safety */ - cm = CMSG_NXTHDR(&sndmhdr, cm); - cm->cmsg_level = IPPROTO_IPV6; - cm->cmsg_type = IPV6_HOPLIMIT; - cm->cmsg_len = CMSG_LEN(sizeof(int)); - memcpy(CMSG_DATA(cm), &hoplimit, sizeof(int)); - - warnmsg(LOG_DEBUG, __func__, "probe a router %s on %s", - inet_ntop(AF_INET6, addr, ntopbuf, INET6_ADDRSTRLEN), - if_indextoname(ifindex, ifnamebuf)); - - if (sendmsg(probesock, &sndmhdr, 0)) - warnmsg(LOG_ERR, __func__, "sendmsg on %s: %s", - if_indextoname(ifindex, ifnamebuf), strerror(errno)); -} |
