#define _KERNEL_STRUCTURES
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <kvm.h>
#include <nlist.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_var.h>
#include <arpa/inet.h>
#include <netdb.h>
kvm_t *kvmd;
struct nlist nl[] = {
#define N_IFNET 0
{ .n_name = "_ifnet" },
{ .n_name = "" },
};
const char *inet6_n2a(struct in6_addr *);
char *ifname(struct ifnet *);
void kread(u_long, void *, int);
void if6_addrlist(struct ifaddr_container *);
void in6_multilist(struct in6_multi *);
struct in6_multi * in6_multientry(struct in6_multi *);
#define KREAD(addr, buf, type) \
kread((u_long)addr, (void *)buf, sizeof(type))
#ifdef N_IN6_MK
struct multi6_kludge {
LIST_ENTRY(multi6_kludge) mk_entry;
struct ifnet *mk_ifp;
struct in6_multihead mk_head;
};
#endif
const char *
inet6_n2a(struct in6_addr *p)
{
static char buf[NI_MAXHOST];
struct sockaddr_in6 sin6;
u_int32_t scopeid;
#ifdef NI_WITHSCOPEID
const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
#else
const int niflags = NI_NUMERICHOST;
#endif
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(struct sockaddr_in6);
sin6.sin6_addr = *p;
if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p)) {
scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
if (scopeid) {
sin6.sin6_scope_id = scopeid;
sin6.sin6_addr.s6_addr[2] = 0;
sin6.sin6_addr.s6_addr[3] = 0;
}
}
if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
buf, sizeof(buf), NULL, 0, niflags) == 0)
return buf;
else
return "(invalid)";
}
int
main(int argc __unused, char **argv __unused)
{
char buf[_POSIX2_LINE_MAX], ifnamebuf[IFNAMSIZ];
struct ifnet *ifp, *nifp, ifnet;
if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) {
perror("kvm_openfiles");
exit(1);
}
if (kvm_nlist(kvmd, nl) < 0) {
perror("kvm_nlist");
exit(1);
}
if (nl[N_IFNET].n_value == 0) {
printf("symbol %s not found\n", nl[N_IFNET].n_name);
exit(1);
}
KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
while (ifp) {
struct ifaddrhead head;
struct ifaddr_container ifac, *ifacp = NULL;
KREAD(ifp, &ifnet, struct ifnet);
printf("%s:\n", if_indextoname(ifnet.if_index, ifnamebuf));
KREAD(ifnet.if_addrheads, &head, struct ifaddrhead);
if (TAILQ_FIRST(&head) != NULL) {
KREAD(TAILQ_FIRST(&head), &ifac,
struct ifaddr_container);
ifacp = &ifac;
}
if6_addrlist(ifacp);
nifp = ifnet.if_link.tqe_next;
ifp = nifp;
}
exit(0);
}
char *
ifname(struct ifnet *ifp)
{
static char buf[BUFSIZ];
struct ifnet ifnet;
KREAD(ifp, &ifnet, struct ifnet);
strlcpy(buf, ifnet.if_xname, sizeof(buf));
return buf;
}
void
kread(u_long addr, void *buf, int len)
{
if (kvm_read(kvmd, addr, buf, len) != len) {
perror("kvm_read");
exit(1);
}
}
void
if6_addrlist(struct ifaddr_container *ifac)
{
struct ifaddr *ifap;
struct ifaddr ifa;
struct sockaddr sa;
struct in6_ifaddr if6a;
struct ifaddr *ifap0;
if (ifac != NULL)
ifap = ifac->ifa;
else
ifap = NULL;
ifap0 = ifap;
while (ifap) {
KREAD(ifap, &ifa, struct ifaddr);
if (ifa.ifa_addr == NULL)
goto nextifap;
KREAD(ifa.ifa_addr, &sa, struct sockaddr);
if (sa.sa_family != PF_INET6)
goto nextifap;
KREAD(ifap, &if6a, struct in6_ifaddr);
printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
nextifap:
if (TAILQ_NEXT(ifac, ifa_link) == NULL) {
ifap = NULL;
} else {
KREAD(TAILQ_NEXT(ifac, ifa_link), ifac,
struct ifaddr_container);
ifap = ifac->ifa;
}
}
if (ifap0) {
struct ifnet ifnet;
struct ifmultiaddr ifm, *ifmp = 0;
struct sockaddr_dl sdl;
KREAD(ifap0, &ifa, struct ifaddr);
KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
if (TAILQ_FIRST(&ifnet.if_multiaddrs))
ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
while (ifmp) {
KREAD(ifmp, &ifm, struct ifmultiaddr);
if (ifm.ifma_addr == NULL)
goto nextmulti;
KREAD(ifm.ifma_addr, &sa, struct sockaddr);
if (sa.sa_family != AF_INET6)
goto nextmulti;
in6_multientry((struct in6_multi *)ifm.ifma_protospec);
if (ifm.ifma_lladdr == 0)
goto nextmulti;
KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
printf("\t\t\tmcast-macaddr %s multicnt %d\n",
ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
ifm.ifma_refcount);
nextmulti:
ifmp = TAILQ_NEXT(&ifm, ifma_link);
}
}
#ifdef N_IN6_MK
if (nl[N_IN6_MK].n_value != 0) {
LIST_HEAD(in6_mktype, multi6_kludge) in6_mk;
struct multi6_kludge *mkp, mk;
char *nam;
KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype);
KREAD(ifap0, &ifa, struct ifaddr);
nam = strdup(ifname(ifa.ifa_ifp));
if (!nam) {
fprintf(stderr, "ifmcstat: not enough core\n");
exit(1);
}
for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) {
KREAD(mkp, &mk, struct multi6_kludge);
if (strcmp(nam, ifname(mk.mk_ifp)) == 0 &&
mk.mk_head.lh_first) {
printf("\t(on kludge entry for %s)\n", nam);
in6_multilist(mk.mk_head.lh_first);
}
}
free(nam);
}
#endif
}
struct in6_multi *
in6_multientry(struct in6_multi *mc)
{
struct in6_multi multi;
KREAD(mc, &multi, struct in6_multi);
printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
printf(" refcnt %u\n", multi.in6m_refcount);
return(multi.in6m_entry.le_next);
}
void
in6_multilist(struct in6_multi *mc)
{
while (mc)
mc = in6_multientry(mc);
}
