Differential D18025 Diff 50548 head/sbin/dumpon/dumpon.c

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head/sbin/dumpon/dumpon.c

Show First 20 Lines • Show All 82 Lines • ▼ Show 20 Lines
static int verbose;		static int verbose;

static void _Noreturn		static void _Noreturn
usage(void)		usage(void)
{		{
fprintf(stderr,		fprintf(stderr,
"usage: dumpon [-v] [-k <pubkey>] [-Zz] <device>\n"		"usage: dumpon [-v] [-k <pubkey>] [-Zz] <device>\n"
" dumpon [-v] [-k <pubkey>] [-Zz]\n"		" dumpon [-v] [-k <pubkey>] [-Zz]\n"
" [-g <gateway>\|default] -s <server> -c <client> <iface>\n"		" [-g <gateway>] -s <server> -c <client> <iface>\n"
" dumpon [-v] off\n"		" dumpon [-v] off\n"
" dumpon [-v] -l\n");		" dumpon [-v] -l\n");
exit(EX_USAGE);		exit(EX_USAGE);
}		}

/*		/*
* Look for a default route on the specified interface.		* Look for a default route on the specified interface.
*/		*/
static char *		static char *
find_gateway(const char *ifname)		find_gateway(const char *ifname)
{		{
struct ifaddrs ifa, ifap;		struct ifaddrs ifa, ifap;
struct rt_msghdr *rtm;		struct rt_msghdr *rtm;
struct sockaddr *sa;		struct sockaddr *sa;
struct sockaddr_dl *sdl;		struct sockaddr_dl *sdl;
struct sockaddr_in dst, mask, *gw;		struct sockaddr_in dst, mask, *gw;
char buf, next, *ret;		char buf, next, *ret;
size_t sz;		size_t sz;
int error, i, ifindex, mib[7];		int error, i, ifindex, mib[7];

ret = NULL;

/* First look up the interface index. */		/* First look up the interface index. */
if (getifaddrs(&ifap) != 0)		if (getifaddrs(&ifap) != 0)
err(EX_OSERR, "getifaddrs");		err(EX_OSERR, "getifaddrs");
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {		for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
if (ifa->ifa_addr->sa_family != AF_LINK)		if (ifa->ifa_addr->sa_family != AF_LINK)
continue;		continue;
if (strcmp(ifa->ifa_name, ifname) == 0) {		if (strcmp(ifa->ifa_name, ifname) == 0) {
sdl = (struct sockaddr_dl )(void )ifa->ifa_addr;		sdl = (struct sockaddr_dl )(void )ifa->ifa_addr;
Show All 21 Lines	for (;;) {
error = sysctl(mib, nitems(mib), buf, &sz, NULL, 0);		error = sysctl(mib, nitems(mib), buf, &sz, NULL, 0);
if (error == 0)		if (error == 0)
break;		break;
if (errno != ENOMEM)		if (errno != ENOMEM)
err(EX_OSERR, "sysctl(NET_RT_DUMP)");		err(EX_OSERR, "sysctl(NET_RT_DUMP)");
free(buf);		free(buf);
}		}

		ret = NULL;
for (next = buf; next < buf + sz; next += rtm->rtm_msglen) {		for (next = buf; next < buf + sz; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr )(void )next;		rtm = (struct rt_msghdr )(void )next;
if (rtm->rtm_version != RTM_VERSION)		if (rtm->rtm_version != RTM_VERSION)
continue;		continue;
if ((rtm->rtm_flags & RTF_GATEWAY) == 0 \|\|		if ((rtm->rtm_flags & RTF_GATEWAY) == 0 \|\|
rtm->rtm_index != ifindex)		rtm->rtm_index != ifindex)
continue;		continue;

▲ Show 20 Lines • Show All 312 Lines • ▼ Show 20 Lines	if (netdump) {
if (strlcpy(ndconf.ndc_iface, argv[0],		if (strlcpy(ndconf.ndc_iface, argv[0],
sizeof(ndconf.ndc_iface)) >= sizeof(ndconf.ndc_iface))		sizeof(ndconf.ndc_iface)) >= sizeof(ndconf.ndc_iface))
errx(EX_USAGE, "invalid interface name '%s'", argv[0]);		errx(EX_USAGE, "invalid interface name '%s'", argv[0]);
if (inet_aton(server, &ndconf.ndc_server) == 0)		if (inet_aton(server, &ndconf.ndc_server) == 0)
errx(EX_USAGE, "invalid server address '%s'", server);		errx(EX_USAGE, "invalid server address '%s'", server);
if (inet_aton(client, &ndconf.ndc_client) == 0)		if (inet_aton(client, &ndconf.ndc_client) == 0)
errx(EX_USAGE, "invalid client address '%s'", client);		errx(EX_USAGE, "invalid client address '%s'", client);

if (gateway == NULL)		gateway = find_gateway(argv[0]);
		if (gateway == NULL) {
		if (verbose)
		printf("failed to look up gateway for %s\n",
		server);
gateway = server;		gateway = server;
else if (strcmp(gateway, "default") == 0 &&		}
(gateway = find_gateway(argv[0])) == NULL)
errx(EX_NOHOST,
"failed to look up next-hop router for %s", server);
if (inet_aton(gateway, &ndconf.ndc_gateway) == 0)		if (inet_aton(gateway, &ndconf.ndc_gateway) == 0)
errx(EX_USAGE, "invalid gateway address '%s'", gateway);		errx(EX_USAGE, "invalid gateway address '%s'", gateway);

#ifdef HAVE_CRYPTO		#ifdef HAVE_CRYPTO
if (pubkeyfile != NULL)		if (pubkeyfile != NULL)
genkey(pubkeyfile, kdap);		genkey(pubkeyfile, kdap);
#endif		#endif
error = ioctl(fd, NETDUMPSCONF, &ndconf);		error = ioctl(fd, NETDUMPSCONF, &ndconf);
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