source3/utils/net_lookup.c

   1 /*
   2    Samba Unix/Linux SMB client library
   3    net lookup command
   4    Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "includes.h"
  20 #include "utils/net.h"
  21 #include "libads/sitename_cache.h"
  22 #include "../lib/addns/dnsquery.h"
  23 #include "../librpc/gen_ndr/ndr_netlogon.h"
  24 #include "smb_krb5.h"
  25 #include "../libcli/security/security.h"
  26 #include "passdb/lookup_sid.h"
  27
  28 int net_lookup_usage(struct net_context *c, int argc, const char **argv)
  29 {
  30         d_printf(_(
  31 "  net lookup [host] HOSTNAME[#<type>]\n\tgives IP for a hostname\n\n"
  32 "  net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
  33 "  net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
  34 "  net lookup pdc [domain|realm]\n\tgives IP of realm's kerberos KDC\n\n"
  35 "  net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
  36 "  net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
  37 "  net lookup name [name]\n\tLookup name's sid and type\n\n"
  38 "  net lookup sid [sid]\n\tGive sid's name and type\n\n"
  39 "  net lookup dsgetdcname [name] [flags] [sitename]\n\n"
  40 ));
  41         return -1;
  42 }
  43
  44 /* lookup a hostname giving an IP */
  45 static int net_lookup_host(struct net_context *c, int argc, const char **argv)
  46 {
  47         struct sockaddr_storage ss;
  48         int name_type = 0x20;
  49         char addr[INET6_ADDRSTRLEN];
  50         const char *name = argv[0];
  51         char *p;
  52
  53         if (argc == 0)
  54                 return net_lookup_usage(c, argc, argv);
  55
  56         p = strchr_m(name,'#');
  57         if (p) {
  58                 *p = '\0';
  59                 sscanf(++p,"%x",&name_type);
  60         }
  61
  62         if (!resolve_name(name, &ss, name_type, false)) {
  63                 /* we deliberately use DEBUG() here to send it to stderr
  64                    so scripts aren't mucked up */
  65                 DEBUG(0,("Didn't find %s#%02x\n", name, name_type));
  66                 return -1;
  67         }
  68
  69         print_sockaddr(addr, sizeof(addr), &ss);
  70         d_printf("%s\n", addr);
  71         return 0;
  72 }
  73
  74 #ifdef HAVE_ADS
  75 static void print_ldap_srvlist(struct dns_rr_srv *dclist, int numdcs )
  76 {
  77         struct sockaddr_storage ss;
  78         int i;
  79
  80         for ( i=0; i<numdcs; i++ ) {
  81                 if (resolve_name(dclist[i].hostname, &ss, 0x20, true) ) {
  82                         char addr[INET6_ADDRSTRLEN];
  83                         print_sockaddr(addr, sizeof(addr), &ss);
  84 #ifdef HAVE_IPV6
  85                         if (ss.ss_family == AF_INET6) {
  86                                 d_printf("[%s]:%d\n", addr, dclist[i].port);
  87                         }
  88 #endif
  89                         if (ss.ss_family == AF_INET) {
  90                                 d_printf("%s:%d\n", addr, dclist[i].port);
  91                         }
  92                 }
  93         }
  94 }
  95 #endif
  96
  97 static int net_lookup_ldap(struct net_context *c, int argc, const char **argv)
  98 {
  99 #ifdef HAVE_ADS
 100         const char *domain;
 101         struct sockaddr_storage ss;
 102         struct dns_rr_srv *dcs = NULL;
 103         int numdcs = 0;
 104         char *sitename;
 105         TALLOC_CTX *ctx;
 106         NTSTATUS status;
 107         int ret;
 108         char h_name[MAX_DNS_NAME_LENGTH];
 109         const char *dns_hosts_file;
 110
 111         if (argc > 0)
 112                 domain = argv[0];
 113         else
 114                 domain = c->opt_target_workgroup;
 115
 116         sitename = sitename_fetch(domain);
 117
 118         if ( (ctx = talloc_init("net_lookup_ldap")) == NULL ) {
 119                 d_fprintf(stderr,"net_lookup_ldap: talloc_init() %s!\n",
 120                           _("failed"));
 121                 SAFE_FREE(sitename);
 122                 return -1;
 123         }
 124
 125         DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
 126
 127         dns_hosts_file = lp_parm_const_string(-1, "resolv", "host file", NULL);
 128         status = ads_dns_query_dcs(ctx, dns_hosts_file, domain, sitename,
 129                                    &dcs, &numdcs);
 130         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 131                 print_ldap_srvlist(dcs, numdcs);
 132                 TALLOC_FREE( ctx );
 133                 SAFE_FREE(sitename);
 134                 return 0;
 135         }
 136
 137         DEBUG(9, ("Looking up PDC for domain %s\n", domain));
 138         if (!get_pdc_ip(domain, &ss)) {
 139                 TALLOC_FREE( ctx );
 140                 SAFE_FREE(sitename);
 141                 return -1;
 142         }
 143
 144         ret = sys_getnameinfo((struct sockaddr *)&ss,
 145                         sizeof(struct sockaddr_storage),
 146                         h_name, sizeof(h_name),
 147                         NULL, 0,
 148                         NI_NAMEREQD);
 149
 150         if (ret) {
 151                 TALLOC_FREE( ctx );
 152                 SAFE_FREE(sitename);
 153                 return -1;
 154         }
 155
 156         DEBUG(9, ("Found PDC with DNS name %s\n", h_name));
 157         domain = strchr(h_name, '.');
 158         if (!domain) {
 159                 TALLOC_FREE( ctx );
 160                 SAFE_FREE(sitename);
 161                 return -1;
 162         }
 163         domain++;
 164
 165         DEBUG(9, ("Looking up ldap for domain %s\n", domain));
 166
 167         status = ads_dns_query_dcs(ctx, dns_hosts_file, domain, sitename,
 168                                    &dcs, &numdcs);
 169         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 170                 print_ldap_srvlist(dcs, numdcs);
 171                 TALLOC_FREE( ctx );
 172                 SAFE_FREE(sitename);
 173                 return 0;
 174         }
 175
 176         TALLOC_FREE( ctx );
 177         SAFE_FREE(sitename);
 178
 179         return -1;
 180 #endif
 181         DEBUG(1,("No ADS support\n"));
 182         return -1;
 183 }
 184
 185 static int net_lookup_dc(struct net_context *c, int argc, const char **argv)
 186 {
 187         struct ip_service *ip_list;
 188         struct sockaddr_storage ss;
 189         char *pdc_str = NULL;
 190         const char *domain = NULL;
 191         char *sitename = NULL;
 192         int count, i;
 193         char addr[INET6_ADDRSTRLEN];
 194         bool sec_ads = (lp_security() == SEC_ADS);
 195
 196         if (sec_ads) {
 197                 domain = lp_realm();
 198         } else {
 199                 domain = c->opt_target_workgroup;
 200         }
 201
 202         if (argc > 0)
 203                 domain=argv[0];
 204
 205         /* first get PDC */
 206         if (!get_pdc_ip(domain, &ss))
 207                 return -1;
 208
 209         print_sockaddr(addr, sizeof(addr), &ss);
 210         if (asprintf(&pdc_str, "%s", addr) == -1) {
 211                 return -1;
 212         }
 213         d_printf("%s\n", pdc_str);
 214
 215         sitename = sitename_fetch(domain);
 216         if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename,
 217                                         &ip_list, &count, sec_ads))) {
 218                 SAFE_FREE(pdc_str);
 219                 SAFE_FREE(sitename);
 220                 return 0;
 221         }
 222         SAFE_FREE(sitename);
 223         for (i=0;i<count;i++) {
 224                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
 225                 if (!strequal(pdc_str, addr))
 226                         d_printf("%s\n", addr);
 227         }
 228         SAFE_FREE(pdc_str);
 229         return 0;
 230 }
 231
 232 static int net_lookup_pdc(struct net_context *c, int argc, const char **argv)
 233 {
 234         struct sockaddr_storage ss;
 235         char *pdc_str = NULL;
 236         const char *domain;
 237         char addr[INET6_ADDRSTRLEN];
 238
 239         if (lp_security() == SEC_ADS) {
 240                 domain = lp_realm();
 241         } else {
 242                 domain = c->opt_target_workgroup;
 243         }
 244
 245         if (argc > 0)
 246                 domain=argv[0];
 247
 248         /* first get PDC */
 249         if (!get_pdc_ip(domain, &ss))
 250                 return -1;
 251
 252         print_sockaddr(addr, sizeof(addr), &ss);
 253         if (asprintf(&pdc_str, "%s", addr) == -1) {
 254                 return -1;
 255         }
 256         d_printf("%s\n", pdc_str);
 257         SAFE_FREE(pdc_str);
 258         return 0;
 259 }
 260
 261
 262 static int net_lookup_master(struct net_context *c, int argc, const char **argv)
 263 {
 264         struct sockaddr_storage master_ss;
 265         const char *domain = c->opt_target_workgroup;
 266         char addr[INET6_ADDRSTRLEN];
 267
 268         if (argc > 0)
 269                 domain=argv[0];
 270
 271         if (!find_master_ip(domain, &master_ss))
 272                 return -1;
 273         print_sockaddr(addr, sizeof(addr), &master_ss);
 274         d_printf("%s\n", addr);
 275         return 0;
 276 }
 277
 278 static int net_lookup_kdc(struct net_context *c, int argc, const char **argv)
 279 {
 280 #ifdef HAVE_KRB5
 281         krb5_error_code rc;
 282         krb5_context ctx;
 283         struct ip_service *kdcs;
 284         const char *realm;
 285         int num_kdcs = 0;
 286         int i;
 287         NTSTATUS status;
 288
 289         initialize_krb5_error_table();
 290         rc = krb5_init_context(&ctx);
 291         if (rc) {
 292                 DEBUG(1,("krb5_init_context failed (%s)\n",
 293                          error_message(rc)));
 294                 return -1;
 295         }
 296
 297         if (argc > 0) {
 298                 realm = argv[0];
 299         } else if (lp_realm() && *lp_realm()) {
 300                 realm = lp_realm();
 301         } else {
 302                 char **realms;
 303
 304                 rc = krb5_get_host_realm(ctx, NULL, &realms);
 305                 if (rc) {
 306                         DEBUG(1,("krb5_gethost_realm failed (%s)\n",
 307                                  error_message(rc)));
 308                         return -1;
 309                 }
 310                 realm = (const char *) *realms;
 311         }
 312
 313         status = get_kdc_list(realm, NULL, &kdcs, &num_kdcs);
 314         if (!NT_STATUS_IS_OK(status)) {
 315                 DEBUG(1,("get_kdc_list failed (%s)\n", nt_errstr(status)));
 316                 return -1;
 317         }
 318
 319         for (i = 0; i < num_kdcs; i++) {
 320                 char addr[INET6_ADDRSTRLEN];
 321
 322                 print_sockaddr(addr, sizeof(addr), &kdcs[i].ss);
 323
 324                 d_printf("%s:%hd\n", addr, kdcs[i].port);
 325         }
 326
 327         return 0;
 328 #endif
 329         DEBUG(1, ("No kerberos support\n"));
 330         return -1;
 331 }
 332
 333 static int net_lookup_name(struct net_context *c, int argc, const char **argv)
 334 {
 335         const char *dom, *name;
 336         struct dom_sid sid;
 337         enum lsa_SidType type;
 338
 339         if (argc != 1) {
 340                 d_printf("%s\n%s",
 341                          _("Usage:"),
 342                          _(" net lookup name <name>\n"));
 343                 return -1;
 344         }
 345
 346         if (!lookup_name(talloc_tos(), argv[0], LOOKUP_NAME_ALL,
 347                          &dom, &name, &sid, &type)) {
 348                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 349                 return -1;
 350         }
 351
 352         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 353                  type, sid_type_lookup(type), dom, name);
 354         return 0;
 355 }
 356
 357 static int net_lookup_sid(struct net_context *c, int argc, const char **argv)
 358 {
 359         const char *dom, *name;
 360         struct dom_sid sid;
 361         enum lsa_SidType type;
 362
 363         if (argc != 1) {
 364                 d_printf("%s\n%s",
 365                          _("Usage:"),
 366                          _(" net lookup sid <sid>\n"));
 367                 return -1;
 368         }
 369
 370         if (!string_to_sid(&sid, argv[0])) {
 371                 d_printf(_("Could not convert %s to SID\n"), argv[0]);
 372                 return -1;
 373         }
 374
 375         if (!lookup_sid(talloc_tos(), &sid,
 376                         &dom, &name, &type)) {
 377                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 378                 return -1;
 379         }
 380
 381         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 382                  type, sid_type_lookup(type), dom, name);
 383         return 0;
 384 }
 385
 386 static int net_lookup_dsgetdcname(struct net_context *c, int argc, const char **argv)
 387 {
 388         NTSTATUS status;
 389         const char *domain_name = NULL;
 390         const char *site_name = NULL;
 391         uint32_t flags = 0;
 392         struct netr_DsRGetDCNameInfo *info = NULL;
 393         TALLOC_CTX *mem_ctx;
 394         char *s = NULL;
 395
 396         if (argc < 1 || argc > 3) {
 397                 d_printf("%s\n%s",
 398                          _("Usage:"),
 399                          _(" net lookup dsgetdcname "
 400                            "<name> <flags> <sitename>\n"));
 401                 return -1;
 402         }
 403
 404         mem_ctx = talloc_init("net_lookup_dsgetdcname");
 405         if (!mem_ctx) {
 406                 return -1;
 407         }
 408
 409         domain_name = argv[0];
 410
 411         if (argc >= 2)
 412                 sscanf(argv[1], "%x", &flags);
 413
 414         if (!flags) {
 415                 flags |= DS_DIRECTORY_SERVICE_REQUIRED;
 416         }
 417
 418         if (argc == 3) {
 419                 site_name = argv[2];
 420         }
 421
 422         if (!c->msg_ctx) {
 423                 d_fprintf(stderr, _("Could not initialise message context. "
 424                         "Try running as root\n"));
 425                 return -1;
 426         }
 427
 428         status = dsgetdcname(mem_ctx, c->msg_ctx, domain_name, NULL, site_name,
 429                              flags, &info);
 430         if (!NT_STATUS_IS_OK(status)) {
 431                 d_printf(_("failed with: %s\n"), nt_errstr(status));
 432                 TALLOC_FREE(mem_ctx);
 433                 return -1;
 434         }
 435
 436         s = NDR_PRINT_STRUCT_STRING(mem_ctx, netr_DsRGetDCNameInfo, info);
 437         printf("%s\n", s);
 438         TALLOC_FREE(s);
 439
 440         TALLOC_FREE(mem_ctx);
 441         return 0;
 442 }
 443
 444
 445 /* lookup hosts or IP addresses using internal samba lookup fns */
 446 int net_lookup(struct net_context *c, int argc, const char **argv)
 447 {
 448         int i;
 449
 450         struct functable table[] = {
 451                 {"HOST", net_lookup_host},
 452                 {"LDAP", net_lookup_ldap},
 453                 {"DC", net_lookup_dc},
 454                 {"PDC", net_lookup_pdc},
 455                 {"MASTER", net_lookup_master},
 456                 {"KDC", net_lookup_kdc},
 457                 {"NAME", net_lookup_name},
 458                 {"SID", net_lookup_sid},
 459                 {"DSGETDCNAME", net_lookup_dsgetdcname},
 460                 {NULL, NULL}
 461         };
 462
 463         if (argc < 1) {
 464                 d_printf(_("\nUsage: \n"));
 465                 return net_lookup_usage(c, argc, argv);
 466         }
 467         for (i=0; table[i].funcname; i++) {
 468                 if (strcasecmp_m(argv[0], table[i].funcname) == 0)
 469                         return table[i].fn(c, argc-1, argv+1);
 470         }
 471
 472         /* Default to lookup a hostname so 'net lookup foo#1b' can be
 473            used instead of 'net lookup host foo#1b'.  The host syntax
 474            is a bit confusing as non #00 names can't really be
 475            considered hosts as such. */
 476
 477         return net_lookup_host(c, argc, argv);
 478 }