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#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "port-sockets.h"
#include <com_err.h>
#define TEST
#include "fake-addrinfo.h"
#include "dnsglue.c"
#include "dnssrv.c"
#include "locate_kdc.c"
enum {
LOOKUP_CONF = 3,
LOOKUP_DNS,
LOOKUP_WHATEVER
} how = LOOKUP_WHATEVER;
const char *prog;
struct addrlist al;
static void kfatal (krb5_error_code err)
{
com_err (prog, err, "- exiting");
exit (1);
}
static const char *stypename (int stype)
{
static char buf[20];
switch (stype) {
case SOCK_STREAM:
return "stream";
case SOCK_DGRAM:
return "dgram";
case SOCK_RAW:
return "raw";
default:
sprintf(buf, "?%d", stype);
return buf;
}
}
static void print_addrs (void)
{
int i;
int naddrs = al.naddrs;
printf ("%d addresses:\n", naddrs);
for (i = 0; i < naddrs; i++) {
int err;
struct addrinfo *ai = al.addrs[i].ai;
char hostbuf[NI_MAXHOST], srvbuf[NI_MAXSERV];
err = getnameinfo (ai->ai_addr, ai->ai_addrlen,
hostbuf, sizeof (hostbuf),
srvbuf, sizeof (srvbuf),
NI_NUMERICHOST | NI_NUMERICSERV);
if (err)
printf ("%2d: getnameinfo returns error %d=%s\n",
i, err, gai_strerror (err));
else
printf ("%2d: address %s\t%s\tport %s\n", i, hostbuf,
stypename (ai->ai_socktype), srvbuf);
}
}
int main (int argc, char *argv[])
{
char *p, *realmname;
krb5_data realm;
krb5_context ctx;
krb5_error_code err;
int master = 0;
p = strrchr (argv[0], '/');
if (p)
prog = p+1;
else
prog = argv[0];
switch (argc) {
case 2:
/* foo $realm */
realmname = argv[1];
break;
case 3:
if (!strcmp (argv[1], "-c"))
how = LOOKUP_CONF;
else if (!strcmp (argv[1], "-d"))
how = LOOKUP_DNS;
else if (!strcmp (argv[1], "-m"))
master = 1;
else
goto usage;
realmname = argv[2];
break;
default:
usage:
fprintf (stderr, "%s: usage: %s [-c | -d | -m] realm\n", prog, prog);
return 1;
}
err = krb5_init_context (&ctx);
if (err)
kfatal (err);
realm.data = realmname;
realm.length = strlen (realmname);
switch (how) {
case LOOKUP_CONF:
err = krb5_locate_srv_conf (ctx, &realm, "kdc", &al, 0,
htons (88), htons (750));
break;
case LOOKUP_DNS:
err = krb5_locate_srv_dns_1 (&realm, "_kerberos", "_udp", &al, 0);
break;
case LOOKUP_WHATEVER:
err = krb5_locate_kdc (ctx, &realm, &al, master, 0, 0);
break;
}
if (err) kfatal (err);
print_addrs ();
krb5int_free_addrlist (&al);
krb5_free_context (ctx);
return 0;
}
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