mirror of
https://github.com/samba-team/samba.git
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ef2e26c91b
(This used to be commit b0510b5428
)
235 lines
5.5 KiB
C
235 lines
5.5 KiB
C
/*
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Samba Unix/Linux SMB client library
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net lookup command
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Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "includes.h"
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#include "../utils/net.h"
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int net_lookup_usage(int argc, const char **argv)
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{
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d_printf(
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" net lookup host HOSTNAME <type>\n\tgives IP for a hostname\n\n"
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" net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
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" net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
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" net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
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" net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
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);
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return -1;
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}
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/* lookup a hostname giving an IP */
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static int net_lookup_host(int argc, const char **argv)
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{
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struct in_addr ip;
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int name_type = 0x20;
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if (argc == 0) return net_lookup_usage(argc, argv);
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if (argc > 1) name_type = strtol(argv[1], NULL, 0);
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if (!resolve_name(argv[0], &ip, name_type)) {
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/* we deliberately use DEBUG() here to send it to stderr
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so scripts aren't mucked up */
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DEBUG(0,("Didn't find %s#%02x\n", argv[0], name_type));
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return -1;
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}
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d_printf("%s\n", inet_ntoa(ip));
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return 0;
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}
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static void print_ldap_srvlist(char *srvlist)
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{
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char *cur, *next;
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struct in_addr ip;
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BOOL printit;
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cur = srvlist;
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do {
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next = strchr(cur,':');
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if (next) *next++='\0';
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printit = resolve_name(cur, &ip, 0x20);
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cur=next;
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next=cur ? strchr(cur,' ') :NULL;
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if (next)
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*next++='\0';
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if (printit)
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d_printf("%s:%s\n", inet_ntoa(ip), cur?cur:"");
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cur = next;
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} while (next);
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}
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static int net_lookup_ldap(int argc, const char **argv)
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{
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#ifdef HAVE_LDAP
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char *srvlist;
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const char *domain;
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int rc;
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struct in_addr addr;
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struct hostent *hostent;
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if (argc > 0)
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domain = argv[0];
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else
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domain = opt_target_workgroup;
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DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
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rc = ldap_domain2hostlist(domain, &srvlist);
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if ((rc == LDAP_SUCCESS) && srvlist) {
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print_ldap_srvlist(srvlist);
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return 0;
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}
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DEBUG(9, ("Looking up DC for domain %s\n", domain));
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if (!get_pdc_ip(domain, &addr))
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return -1;
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hostent = gethostbyaddr((char *) &addr.s_addr, sizeof(addr.s_addr),
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AF_INET);
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if (!hostent)
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return -1;
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DEBUG(9, ("Found DC with DNS name %s\n", hostent->h_name));
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domain = strchr(hostent->h_name, '.');
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if (!domain)
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return -1;
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domain++;
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DEBUG(9, ("Looking up ldap for domain %s\n", domain));
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rc = ldap_domain2hostlist(domain, &srvlist);
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if ((rc == LDAP_SUCCESS) && srvlist) {
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print_ldap_srvlist(srvlist);
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return 0;
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}
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return -1;
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#endif
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DEBUG(1,("No LDAP support\n"));
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return -1;
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}
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static int net_lookup_dc(int argc, const char **argv)
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{
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struct in_addr *ip_list, addr;
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char *pdc_str = NULL;
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const char *domain=opt_target_workgroup;
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int count, i;
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BOOL list_ordered;
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if (argc > 0)
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domain=argv[0];
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/* first get PDC */
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if (!get_pdc_ip(domain, &addr))
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return -1;
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asprintf(&pdc_str, "%s", inet_ntoa(addr));
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d_printf("%s\n", pdc_str);
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if (!get_dc_list(domain, &ip_list, &count, &list_ordered)) {
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SAFE_FREE(pdc_str);
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return 0;
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}
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for (i=0;i<count;i++) {
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char *dc_str = inet_ntoa(ip_list[i]);
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if (!strequal(pdc_str, dc_str))
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d_printf("%s\n", dc_str);
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}
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SAFE_FREE(pdc_str);
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return 0;
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}
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static int net_lookup_master(int argc, const char **argv)
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{
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struct in_addr master_ip;
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const char *domain=opt_target_workgroup;
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if (argc > 0)
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domain=argv[0];
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if (!find_master_ip(domain, &master_ip))
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return -1;
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d_printf("%s\n", inet_ntoa(master_ip));
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return 0;
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}
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static int net_lookup_kdc(int argc, const char **argv)
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{
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#ifdef HAVE_KRB5
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krb5_error_code rc;
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krb5_context ctx;
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struct sockaddr_in *addrs;
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int num_kdcs,i;
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krb5_data realm;
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char **realms;
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rc = krb5_init_context(&ctx);
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if (rc) {
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DEBUG(1,("krb5_init_context failed (%s)\n",
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error_message(rc)));
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return -1;
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}
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if (argc>0) {
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realm.data = (krb5_pointer) argv[0];
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realm.length = strlen(argv[0]);
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} else if (lp_realm() && *lp_realm()) {
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realm.data = (krb5_pointer) lp_realm();
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realm.length = strlen(realm.data);
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} else {
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rc = krb5_get_host_realm(ctx, NULL, &realms);
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if (rc) {
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DEBUG(1,("krb5_gethost_realm failed (%s)\n",
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error_message(rc)));
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return -1;
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}
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realm.data = (krb5_pointer) *realms;
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realm.length = strlen(realm.data);
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}
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rc = krb5_locate_kdc(ctx, &realm, &addrs, &num_kdcs, 0);
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if (rc) {
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DEBUG(1, ("krb5_locate_kdc failed (%s)\n", error_message(rc)));
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return -1;
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}
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for (i=0;i<num_kdcs;i++)
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if (addrs[i].sin_family == AF_INET)
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d_printf("%s:%hd\n", inet_ntoa(addrs[i].sin_addr),
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ntohs(addrs[i].sin_port));
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return 0;
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#endif
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DEBUG(1, ("No kerberos support\n"));
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return -1;
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}
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/* lookup hosts or IP addresses using internal samba lookup fns */
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int net_lookup(int argc, const char **argv)
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{
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struct functable func[] = {
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{"HOST", net_lookup_host},
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{"LDAP", net_lookup_ldap},
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{"DC", net_lookup_dc},
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{"MASTER", net_lookup_master},
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{"KDC", net_lookup_kdc},
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{NULL, NULL}
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};
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return net_run_function(argc, argv, func, net_lookup_usage);
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}
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