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/*
Samba Unix/Linux SMB client library
net lookup command
Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "includes.h"
#include "../utils/net.h"
int net_lookup_usage(int argc, const char **argv)
{
d_printf(
" net lookup host HOSTNAME <type>\n\tgives IP for a hostname\n\n"
" net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
" net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
" net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
" net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
);
return -1;
}
/* lookup a hostname giving an IP */
static int net_lookup_host(int argc, const char **argv)
{
struct in_addr ip;
int name_type = 0x20;
if (argc == 0) return net_lookup_usage(argc, argv);
if (argc > 1) name_type = strtol(argv[1], NULL, 0);
if (!resolve_name(argv[0], &ip, name_type)) {
/* we deliberately use DEBUG() here to send it to stderr
so scripts aren't mucked up */
DEBUG(0,("Didn't find %s#%02x\n", argv[0], name_type));
return -1;
}
d_printf("%s\n", inet_ntoa(ip));
return 0;
}
static void print_ldap_srvlist(char *srvlist)
{
char *cur, *next;
struct in_addr ip;
BOOL printit;
cur = srvlist;
do {
next = strchr(cur,':');
if (next) *next++='\0';
printit = resolve_name(cur, &ip, 0x20);
cur=next;
next=cur ? strchr(cur,' ') :NULL;
if (next)
*next++='\0';
if (printit)
d_printf("%s:%s\n", inet_ntoa(ip), cur?cur:"");
cur = next;
} while (next);
}
static int net_lookup_ldap(int argc, const char **argv)
{
#ifdef HAVE_LDAP
char *srvlist;
const char *domain;
int rc, count;
struct in_addr *addr;
struct hostent *hostent;
if (argc > 0)
domain = argv[0];
else
domain = opt_target_workgroup;
DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
rc = ldap_domain2hostlist(domain, &srvlist);
if ((rc == LDAP_SUCCESS) && srvlist) {
print_ldap_srvlist(srvlist);
return 0;
}
DEBUG(9, ("Looking up DC for domain %s\n", domain));
if (!get_dc_list(True, domain, &addr, &count))
return -1;
hostent = gethostbyaddr((char *) &addr->s_addr, sizeof(addr->s_addr),
AF_INET);
if (!hostent)
return -1;
DEBUG(9, ("Found DC with DNS name %s\n", hostent->h_name));
domain = strchr(hostent->h_name, '.');
if (!domain)
return -1;
domain++;
DEBUG(9, ("Looking up ldap for domain %s\n", domain));
rc = ldap_domain2hostlist(domain, &srvlist);
if ((rc == LDAP_SUCCESS) && srvlist) {
print_ldap_srvlist(srvlist);
return 0;
}
return -1;
#endif
DEBUG(1,("No LDAP support\n"));
return -1;
}
static int net_lookup_dc(int argc, const char **argv)
{
struct in_addr *ip_list;
char *pdc_str = NULL;
const char *domain=opt_target_workgroup;
int count, i;
if (argc > 0)
domain=argv[0];
/* first get PDC */
if (!get_dc_list(True, domain, &ip_list, &count))
return -1;
asprintf(&pdc_str, "%s", inet_ntoa(*ip_list));
d_printf("%s\n", pdc_str);
if (!get_dc_list(False, domain, &ip_list, &count)) {
SAFE_FREE(pdc_str);
return 0;
}
for (i=0;i<count;i++) {
char *dc_str = inet_ntoa(ip_list[i]);
if (!strequal(pdc_str, dc_str))
d_printf("%s\n", dc_str);
}
SAFE_FREE(pdc_str);
return 0;
}
static int net_lookup_master(int argc, const char **argv)
{
struct in_addr master_ip;
const char *domain=opt_target_workgroup;
if (argc > 0)
domain=argv[0];
if (!find_master_ip(domain, &master_ip))
return -1;
d_printf("%s\n", inet_ntoa(master_ip));
return 0;
}
static int net_lookup_kdc(int argc, const char **argv)
{
#ifdef HAVE_KRB5
krb5_error_code rc;
krb5_context ctx;
struct sockaddr_in *addrs;
int num_kdcs,i;
krb5_data realm;
char **realms;
rc = krb5_init_context(&ctx);
if (rc) {
DEBUG(1,("krb5_init_context failed (%s)\n",
error_message(rc)));
return -1;
}
if (argc>0) {
realm.data = (krb5_pointer) argv[0];
realm.length = strlen(argv[0]);
} else if (lp_realm() && *lp_realm()) {
realm.data = (krb5_pointer) lp_realm();
realm.length = strlen(realm.data);
} else {
rc = krb5_get_host_realm(ctx, NULL, &realms);
if (rc) {
DEBUG(1,("krb5_gethost_realm failed (%s)\n",
error_message(rc)));
return -1;
}
realm.data = (krb5_pointer) *realms;
realm.length = strlen(realm.data);
}
rc = krb5_locate_kdc(ctx, &realm, &addrs, &num_kdcs, 0);
if (rc) {
DEBUG(1, ("krb5_locate_kdc failed (%s)\n", error_message(rc)));
return -1;
}
for (i=0;i<num_kdcs;i++)
if (addrs[i].sin_family == AF_INET)
d_printf("%s:%hd\n", inet_ntoa(addrs[i].sin_addr),
ntohs(addrs[i].sin_port));
return 0;
#endif
DEBUG(1, ("No kerberos support\n"));
return -1;
}
/* lookup hosts or IP addresses using internal samba lookup fns */
int net_lookup(int argc, const char **argv)
{
struct functable func[] = {
{"HOST", net_lookup_host},
{"LDAP", net_lookup_ldap},
{"DC", net_lookup_dc},
{"MASTER", net_lookup_master},
{"KDC", net_lookup_kdc},
{NULL, NULL}
};
return net_run_function(argc, argv, func, net_lookup_usage);
}
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