/*
* Display an individual arp entry
*/
static void
get(const char *host)
{
struct sockaddr_inarp sin = blank_sin; /* struct copy */
if (getinetaddr(host, &sin.sin_addr) == -1)
exit(1);
dump(sin.sin_addr.s_addr);
if (found_entry == 0)
errx(1, "%s (%s) -- no entry", host, inet_ntoa(sin.sin_addr));
}
/*
* Display an individual arp entry
*/
int
get(const char *host)
{
struct sockaddr_inarp *sin;
sin = &sin_m;
sin_m = blank_sin; /* struct copy */
if (getinetaddr(host, &sin->sin_addr) == -1)
exit(1);
search(sin->sin_addr.s_addr, print_entry);
if (found_entry == 0) {
printf("%s (%s) -- no entry\n", host, inet_ntoa(sin->sin_addr));
return (1);
}
return (0);
}
/*
* Display an individual arp entry
*/
int
get(const char *host)
{
struct sockaddr_inarp *sin;
sin = &sin_m;
sin_m = blank_sin; /* struct copy */
if (getinetaddr(host, &sin->sin_addr) == -1)
exit(1);
printf("%-*.*s %-*.*s %*.*s %-10.10s %5s\n",
W_ADDR, W_ADDR, "Host", W_LL, W_LL, "Ethernet Address",
W_IF, W_IF, "Netif", "Expire", "Flags");
search(sin->sin_addr.s_addr, print_entry);
if (found_entry == 0) {
printf("%-*.*s no entry\n", W_ADDR, W_ADDR,
inet_ntoa(sin->sin_addr));
return (1);
}
return (0);
}
/*
* Set an individual arp entry
*/
int
set(int argc, char *argv[])
{
struct sockaddr_inarp *sin;
struct sockaddr_dl *sdl;
struct rt_msghdr *rtm;
char *eaddr = argv[1], *host = argv[0];
struct ether_addr *ea;
sin = &sin_m;
rtm = &(m_rtmsg.m_rtm);
getsocket();
argc -= 2;
argv += 2;
sdl_m = blank_sdl; /* struct copy */
sin_m = blank_sin; /* struct copy */
if (getinetaddr(host, &sin->sin_addr) == -1)
return (1);
ea = ether_aton(eaddr);
if (ea == NULL)
errx(1, "invalid ethernet address: %s", eaddr);
memcpy(LLADDR(&sdl_m), ea, sizeof(*ea));
sdl_m.sdl_alen = 6;
expire_time = 0;
doing_proxy = flags = export_only = 0;
while (argc-- > 0) {
if (strncmp(argv[0], "temp", 4) == 0) {
struct timeval now;
gettimeofday(&now, 0);
expire_time = now.tv_sec + 20 * 60;
if (flags & RTF_PERMANENT_ARP) {
/* temp or permanent, not both */
usage();
return (0);
}
} else if (strncmp(argv[0], "pub", 3) == 0) {
flags |= RTF_ANNOUNCE;
doing_proxy = SIN_PROXY;
} else if (strncmp(argv[0], "permanent", 9) == 0) {
flags |= RTF_PERMANENT_ARP;
if (expire_time != 0) {
/* temp or permanent, not both */
usage();
return (0);
}
}
argv++;
}
tryagain:
if (rtget(&sin, &sdl)) {
warn("%s", host);
return (1);
}
if (sin->sin_addr.s_addr == sin_m.sin_addr.s_addr) {
if (sdl->sdl_family == AF_LINK &&
(rtm->rtm_flags & RTF_LLINFO) &&
!(rtm->rtm_flags & RTF_GATEWAY))
switch (sdl->sdl_type) {
case IFT_ETHER:
case IFT_FDDI:
case IFT_ISO88023:
case IFT_ISO88024:
case IFT_ISO88025:
case IFT_CARP:
goto overwrite;
}
if (doing_proxy == 0) {
printf("set: can only proxy for %s\n", host);
return (1);
}
if (sin_m.sin_other & SIN_PROXY) {
printf("set: proxy entry exists for non 802 device\n");
return (1);
}
sin_m.sin_other = SIN_PROXY;
export_only = 1;
goto tryagain;
}
overwrite:
if (sdl->sdl_family != AF_LINK) {
printf("cannot intuit interface index and type for %s\n", host);
return (1);
}
sdl_m.sdl_type = sdl->sdl_type;
sdl_m.sdl_index = sdl->sdl_index;
return (rtmsg(RTM_ADD));
}
/*
* Set an individual arp entry
*/
static int
set(int argc, char **argv)
{
struct sockaddr_inarp *sina;
struct sockaddr_dl *sdl;
struct rt_msghdr *rtm;
char *host = argv[0], *eaddr;
struct sockaddr_inarp sin_m = blank_sin; /* struct copy */
struct sockaddr_dl sdl_m = blank_sdl; /* struct copy */
int s;
eaddr = argv[1];
s = getsocket();
argc -= 2;
argv += 2;
if (getinetaddr(host, &sin_m.sin_addr) == -1)
return (1);
if (atosdl(eaddr, &sdl_m))
warnx("invalid link-level address '%s'", eaddr);
doing_proxy = flags = export_only = expire_time = 0;
for (; argc-- > 0; argv++) {
if (strncmp(argv[0], "temp", 4) == 0) {
struct timeval timev;
(void)gettimeofday(&timev, 0);
expire_time = timev.tv_sec + 20 * 60;
}
else if (strncmp(argv[0], "pub", 3) == 0) {
flags |= RTF_ANNOUNCE;
doing_proxy = SIN_PROXY;
if (argc && strncmp(argv[1], "pro", 3) == 0) {
export_only = 1;
argc--; argv++;
}
} else if (strncmp(argv[0], "trail", 5) == 0) {
warnx("%s: Sending trailers is no longer supported",
host);
} else if (strcmp(argv[0], "ifscope") == 0) {
if (argc == 0) {
warnx("missing interface for ifscope");
continue;
}
argc--;
argv++;
if (!getlink(argv[0], &sdl_m))
warnx("cannot get link address for %s", argv[0]);
}
}
if (memcmp(&sdl_m, &blank_sdl, sizeof(blank_sdl)))
goto out;
tryagain:
rtm = rtmsg(s, RTM_GET, &sin_m, &sdl_m);
if (rtm == NULL) {
warn("%s", host);
return (1);
}
sina = (struct sockaddr_inarp *)(void *)(rtm + 1);
sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(sina->sin_len) +
(char *)(void *)sina);
if (sina->sin_addr.s_addr == sin_m.sin_addr.s_addr) {
if (is_llinfo(sdl, rtm->rtm_flags))
goto overwrite;
if (doing_proxy == 0) {
warnx("set: can only proxy for %s", host);
return (1);
}
if (sin_m.sin_other & SIN_PROXY) {
warnx("set: proxy entry exists for non 802 device");
return (1);
}
sin_m.sin_other = SIN_PROXY;
export_only = 1;
goto tryagain;
}
overwrite:
if (sdl->sdl_family != AF_LINK) {
warnx("cannot intuit interface index and type for %s",
host);
return (1);
}
sdl_m.sdl_type = sdl->sdl_type;
sdl_m.sdl_index = sdl->sdl_index;
out:
sin_m.sin_other = 0;
if (doing_proxy && export_only)
sin_m.sin_other = SIN_PROXY;
rtm = rtmsg(s, RTM_ADD, &sin_m, &sdl_m);
if (vflag)
(void)printf("%s (%s) added\n", host, eaddr);
return (rtm == NULL) ? 1 : 0;
}
