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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#include "k5-platform.h"
#include "port-sockets.h"
#include <sys/types.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 serverlist sl;
static void
kfatal (krb5_error_code err)
{
com_err (prog, err, "- exiting");
exit (1);
}
static const char *
ttypename (k5_transport ttype)
{
static char buf[20];
switch (ttype) {
case TCP_OR_UDP:
return "tcp or udp";
case TCP:
return "tcp";
case UDP:
return "udp";
case HTTPS:
return "https";
default:
snprintf(buf, sizeof(buf), "?%d", ttype);
return buf;
}
}
static void
print_addrs (void)
{
size_t i;
int err;
printf("%d servers:\n", (int)sl.nservers);
for (i = 0; i < sl.nservers; i++) {
struct server_entry *entry = &sl.servers[i];
char hostbuf[NI_MAXHOST], srvbuf[NI_MAXSERV];
if (entry->hostname != NULL) {
printf("%2d: host %s\t%s\tport %d\n", (int)i, entry->hostname,
ttypename(entry->transport), ntohs(entry->port));
continue;
}
err = getnameinfo((struct sockaddr *)&entry->addr, entry->addrlen,
hostbuf, sizeof(hostbuf), srvbuf, sizeof(srvbuf),
NI_NUMERICHOST | NI_NUMERICSERV);
if (err) {
printf("%2d: getnameinfo returns error %d=%s\n", (int)i, err,
gai_strerror(err));
} else {
printf("%2d: address %s\t%s\tport %s\n", (int)i, hostbuf,
ttypename(entry->transport), 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", &sl,
htons(88), htons(750));
break;
case LOOKUP_DNS:
err = locate_srv_dns_1(&realm, "_kerberos", "_udp", &sl);
break;
case LOOKUP_WHATEVER:
err = k5_locate_kdc(ctx, &realm, &sl, master, FALSE);
break;
}
if (err) kfatal (err);
print_addrs();
k5_free_serverlist(&sl);
krb5_free_context(ctx);
return 0;
}
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