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 "libsmb/namequery.h"
  22 #include "libads/sitename_cache.h"
  23 #include "../lib/addns/dnsquery.h"
  24 #include "../librpc/gen_ndr/ndr_netlogon.h"
  25 #include "smb_krb5.h"
  26 #include "../libcli/security/security.h"
  27 #include "passdb/lookup_sid.h"
  28 #include "libsmb/dsgetdcname.h"
  29
  30 int net_lookup_usage(struct net_context *c, int argc, const char **argv)
  31 {
  32         d_printf(_(
  33 "  net lookup [host] HOSTNAME[#<type>]\n\tgives IP for a hostname\n\n"
  34 "  net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
  35 "  net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
  36 "  net lookup pdc [domain|realm]\n\tgives IP of realm's kerberos KDC\n\n"
  37 "  net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
  38 "  net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
  39 "  net lookup name [name]\n\tLookup name's sid and type\n\n"
  40 "  net lookup sid [sid]\n\tGive sid's name and type\n\n"
  41 "  net lookup dsgetdcname [name] [flags] [sitename]\n\n"
  42 ));
  43         return -1;
  44 }
  45
  46 /* lookup a hostname giving an IP */
  47 static int net_lookup_host(struct net_context *c, int argc, const char **argv)
  48 {
  49         struct sockaddr_storage ss;
  50         int name_type = 0x20;
  51         char addr[INET6_ADDRSTRLEN];
  52         const char *name = argv[0];
  53         char *p;
  54
  55         if (argc == 0)
  56                 return net_lookup_usage(c, argc, argv);
  57
  58         p = strchr_m(name,'#');
  59         if (p) {
  60                 *p = '\0';
  61                 sscanf(++p,"%x",&name_type);
  62         }
  63
  64         if (!resolve_name(name, &ss, name_type, false)) {
  65                 /* we deliberately use DEBUG() here to send it to stderr
  66                    so scripts aren't mucked up */
  67                 DEBUG(0,("Didn't find %s#%02x\n", name, name_type));
  68                 return -1;
  69         }
  70
  71         print_sockaddr(addr, sizeof(addr), &ss);
  72         d_printf("%s\n", addr);
  73         return 0;
  74 }
  75
  76 #ifdef HAVE_ADS
  77 static void print_ldap_srvlist(struct dns_rr_srv *dclist, int numdcs )
  78 {
  79         struct sockaddr_storage ss;
  80         int i;
  81
  82         for ( i=0; i<numdcs; i++ ) {
  83                 if (resolve_name(dclist[i].hostname, &ss, 0x20, true) ) {
  84                         char addr[INET6_ADDRSTRLEN];
  85                         print_sockaddr(addr, sizeof(addr), &ss);
  86 #ifdef HAVE_IPV6
  87                         if (ss.ss_family == AF_INET6) {
  88                                 d_printf("[%s]:%d\n", addr, dclist[i].port);
  89                         }
  90 #endif
  91                         if (ss.ss_family == AF_INET) {
  92                                 d_printf("%s:%d\n", addr, dclist[i].port);
  93                         }
  94                 }
  95         }
  96 }
  97 #endif
  98
  99 static int net_lookup_ldap(struct net_context *c, int argc, const char **argv)
 100 {
 101 #ifdef HAVE_ADS
 102         const char *domain;
 103         struct sockaddr_storage ss;
 104         struct dns_rr_srv *dcs = NULL;
 105         int numdcs = 0;
 106         char *sitename;
 107         TALLOC_CTX *ctx;
 108         NTSTATUS status;
 109         int ret;
 110         char h_name[MAX_DNS_NAME_LENGTH];
 111
 112         if (argc > 0)
 113                 domain = argv[0];
 114         else
 115                 domain = c->opt_target_workgroup;
 116
 117         if ( (ctx = talloc_init("net_lookup_ldap")) == NULL ) {
 118                 d_fprintf(stderr,"net_lookup_ldap: talloc_init() %s!\n",
 119                           _("failed"));
 120                 return -1;
 121         }
 122
 123         sitename = sitename_fetch(ctx, domain);
 124
 125         DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
 126
 127         status = ads_dns_query_dcs(ctx,
 128                                    domain,
 129                                    sitename,
 130                                    &dcs,
 131                                    &numdcs);
 132         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 133                 print_ldap_srvlist(dcs, numdcs);
 134                 TALLOC_FREE( ctx );
 135                 return 0;
 136         }
 137
 138         DEBUG(9, ("Looking up PDC for domain %s\n", domain));
 139         if (!get_pdc_ip(domain, &ss)) {
 140                 TALLOC_FREE( ctx );
 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                 return -1;
 153         }
 154
 155         DEBUG(9, ("Found PDC with DNS name %s\n", h_name));
 156         domain = strchr(h_name, '.');
 157         if (!domain) {
 158                 TALLOC_FREE( ctx );
 159                 return -1;
 160         }
 161         domain++;
 162
 163         DEBUG(9, ("Looking up ldap for domain %s\n", domain));
 164
 165         status = ads_dns_query_dcs(ctx,
 166                                    domain,
 167                                    sitename,
 168                                    &dcs,
 169                                    &numdcs);
 170         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 171                 print_ldap_srvlist(dcs, numdcs);
 172                 TALLOC_FREE( ctx );
 173                 return 0;
 174         }
 175
 176         TALLOC_FREE( ctx );
 177
 178         return -1;
 179 #endif
 180         DEBUG(1,("No ADS support\n"));
 181         return -1;
 182 }
 183
 184 static int net_lookup_dc(struct net_context *c, int argc, const char **argv)
 185 {
 186         struct ip_service *ip_list;
 187         struct sockaddr_storage ss;
 188         char *pdc_str = NULL;
 189         const char *domain = NULL;
 190         char *sitename = NULL;
 191         int count, i;
 192         char addr[INET6_ADDRSTRLEN];
 193         bool sec_ads = (lp_security() == SEC_ADS);
 194
 195         if (sec_ads) {
 196                 domain = lp_realm();
 197         } else {
 198                 domain = c->opt_target_workgroup;
 199         }
 200
 201         if (argc > 0)
 202                 domain=argv[0];
 203
 204         /* first get PDC */
 205         if (!get_pdc_ip(domain, &ss))
 206                 return -1;
 207
 208         print_sockaddr(addr, sizeof(addr), &ss);
 209         if (asprintf(&pdc_str, "%s", addr) == -1) {
 210                 return -1;
 211         }
 212         d_printf("%s\n", pdc_str);
 213
 214         sitename = sitename_fetch(talloc_tos(), domain);
 215         if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename,
 216                                         &ip_list, &count, sec_ads))) {
 217                 SAFE_FREE(pdc_str);
 218                 TALLOC_FREE(sitename);
 219                 return 0;
 220         }
 221         TALLOC_FREE(sitename);
 222         for (i=0;i<count;i++) {
 223                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
 224                 if (!strequal(pdc_str, addr))
 225                         d_printf("%s\n", addr);
 226         }
 227         SAFE_FREE(pdc_str);
 228         return 0;
 229 }
 230
 231 static int net_lookup_pdc(struct net_context *c, int argc, const char **argv)
 232 {
 233         struct sockaddr_storage ss;
 234         char *pdc_str = NULL;
 235         const char *domain;
 236         char addr[INET6_ADDRSTRLEN];
 237
 238         if (lp_security() == SEC_ADS) {
 239                 domain = lp_realm();
 240         } else {
 241                 domain = c->opt_target_workgroup;
 242         }
 243
 244         if (argc > 0)
 245                 domain=argv[0];
 246
 247         /* first get PDC */
 248         if (!get_pdc_ip(domain, &ss))
 249                 return -1;
 250
 251         print_sockaddr(addr, sizeof(addr), &ss);
 252         if (asprintf(&pdc_str, "%s", addr) == -1) {
 253                 return -1;
 254         }
 255         d_printf("%s\n", pdc_str);
 256         SAFE_FREE(pdc_str);
 257         return 0;
 258 }
 259
 260
 261 static int net_lookup_master(struct net_context *c, int argc, const char **argv)
 262 {
 263         struct sockaddr_storage master_ss;
 264         const char *domain = c->opt_target_workgroup;
 265         char addr[INET6_ADDRSTRLEN];
 266
 267         if (argc > 0)
 268                 domain=argv[0];
 269
 270         if (!find_master_ip(domain, &master_ss))
 271                 return -1;
 272         print_sockaddr(addr, sizeof(addr), &master_ss);
 273         d_printf("%s\n", addr);
 274         return 0;
 275 }
 276
 277 static int net_lookup_kdc(struct net_context *c, int argc, const char **argv)
 278 {
 279 #ifdef HAVE_KRB5
 280         krb5_error_code rc;
 281         krb5_context ctx;
 282         struct ip_service *kdcs;
 283         const char *realm;
 284         char **get_host_realms = NULL;
 285         int num_kdcs = 0;
 286         int i;
 287         NTSTATUS status;
 288
 289         rc = smb_krb5_init_context_common(&ctx);
 290         if (rc) {
 291                 DBG_ERR("kerberos init context failed (%s)\n",
 292                         error_message(rc));
 293                 return -1;
 294         }
 295
 296         if (argc > 0) {
 297                 realm = argv[0];
 298         } else if (lp_realm() && *lp_realm()) {
 299                 realm = lp_realm();
 300         } else {
 301                 rc = krb5_get_host_realm(ctx, NULL, &get_host_realms);
 302                 if (rc) {
 303                         DEBUG(1,("krb5_gethost_realm failed (%s)\n",
 304                                  error_message(rc)));
 305                         krb5_free_context(ctx);
 306                         return -1;
 307                 }
 308                 realm = (const char *) *get_host_realms;
 309         }
 310
 311         status = get_kdc_list(realm, NULL, &kdcs, &num_kdcs);
 312         if (!NT_STATUS_IS_OK(status)) {
 313                 DEBUG(1,("get_kdc_list failed (%s)\n", nt_errstr(status)));
 314                 krb5_free_host_realm(ctx, get_host_realms);
 315                 krb5_free_context(ctx);
 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:%u\n", addr, kdcs[i].port);
 325         }
 326
 327         krb5_free_host_realm(ctx, get_host_realms);
 328         krb5_free_context(ctx);
 329         return 0;
 330 #endif
 331         DEBUG(1, ("No kerberos support\n"));
 332         return -1;
 333 }
 334
 335 static int net_lookup_name(struct net_context *c, int argc, const char **argv)
 336 {
 337         const char *dom, *name;
 338         struct dom_sid sid;
 339         struct dom_sid_buf buf;
 340         enum lsa_SidType type;
 341
 342         if (argc != 1) {
 343                 d_printf("%s\n%s",
 344                          _("Usage:"),
 345                          _(" net lookup name <name>\n"));
 346                 return -1;
 347         }
 348
 349         if (!lookup_name(talloc_tos(), argv[0], LOOKUP_NAME_ALL,
 350                          &dom, &name, &sid, &type)) {
 351                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 352                 return -1;
 353         }
 354
 355         d_printf("%s %d (%s) %s\\%s\n", dom_sid_str_buf(&sid, &buf),
 356                  type, sid_type_lookup(type), dom, name);
 357         return 0;
 358 }
 359
 360 static int net_lookup_sid(struct net_context *c, int argc, const char **argv)
 361 {
 362         const char *dom, *name;
 363         struct dom_sid sid;
 364         struct dom_sid_buf buf;
 365         enum lsa_SidType type;
 366
 367         if (argc != 1) {
 368                 d_printf("%s\n%s",
 369                          _("Usage:"),
 370                          _(" net lookup sid <sid>\n"));
 371                 return -1;
 372         }
 373
 374         if (!string_to_sid(&sid, argv[0])) {
 375                 d_printf(_("Could not convert %s to SID\n"), argv[0]);
 376                 return -1;
 377         }
 378
 379         if (!lookup_sid(talloc_tos(), &sid,
 380                         &dom, &name, &type)) {
 381                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 382                 return -1;
 383         }
 384
 385         d_printf("%s %d (%s) %s\\%s\n", dom_sid_str_buf(&sid, &buf),
 386                  type, sid_type_lookup(type), dom, name);
 387         return 0;
 388 }
 389
 390 static int net_lookup_dsgetdcname(struct net_context *c, int argc, const char **argv)
 391 {
 392         NTSTATUS status;
 393         const char *domain_name = NULL;
 394         const char *site_name = NULL;
 395         uint32_t flags = 0;
 396         struct netr_DsRGetDCNameInfo *info = NULL;
 397         TALLOC_CTX *mem_ctx;
 398         char *s = NULL;
 399
 400         if (argc < 1 || argc > 3) {
 401                 d_printf("%s\n%s",
 402                          _("Usage:"),
 403                          _(" net lookup dsgetdcname "
 404                            "<name> <flags> <sitename>\n"));
 405                 return -1;
 406         }
 407
 408         mem_ctx = talloc_init("net_lookup_dsgetdcname");
 409         if (!mem_ctx) {
 410                 return -1;
 411         }
 412
 413         domain_name = argv[0];
 414
 415         if (argc >= 2) {
 416                 sscanf(argv[1], "%x", &flags);
 417         }
 418
 419         if (flags == 0) {
 420                 flags = DS_DIRECTORY_SERVICE_REQUIRED;
 421         }
 422
 423         if (argc == 3) {
 424                 site_name = argv[2];
 425         }
 426
 427         if (!c->msg_ctx) {
 428                 d_fprintf(stderr, _("Could not initialise message context. "
 429                         "Try running as root\n"));
 430                 return -1;
 431         }
 432
 433         status = dsgetdcname(mem_ctx, c->msg_ctx, domain_name, NULL, site_name,
 434                              flags, &info);
 435         if (!NT_STATUS_IS_OK(status)) {
 436                 d_printf(_("failed with: %s\n"), nt_errstr(status));
 437                 TALLOC_FREE(mem_ctx);
 438                 return -1;
 439         }
 440
 441         s = NDR_PRINT_STRUCT_STRING(mem_ctx, netr_DsRGetDCNameInfo, info);
 442         printf("%s\n", s);
 443         TALLOC_FREE(s);
 444
 445         TALLOC_FREE(mem_ctx);
 446         return 0;
 447 }
 448
 449
 450 /* lookup hosts or IP addresses using internal samba lookup fns */
 451 int net_lookup(struct net_context *c, int argc, const char **argv)
 452 {
 453         int i;
 454
 455         struct functable table[] = {
 456                 {
 457                         .funcname = "HOST",
 458                         .fn       = net_lookup_host,
 459                 },
 460                 {
 461                         .funcname = "LDAP",
 462                         .fn       = net_lookup_ldap,
 463                 },
 464                 {
 465                         .funcname = "DC",
 466                         .fn       = net_lookup_dc,
 467                 },
 468                 {
 469                         .funcname = "PDC",
 470                         .fn       = net_lookup_pdc,
 471                 },
 472                 {
 473                         .funcname = "MASTER",
 474                         .fn       = net_lookup_master,
 475                 },
 476                 {
 477                         .funcname = "KDC",
 478                         .fn       = net_lookup_kdc,
 479                 },
 480                 {
 481                         .funcname = "NAME",
 482                         .fn       = net_lookup_name,
 483                 },
 484                 {
 485                         .funcname = "SID",
 486                         .fn       = net_lookup_sid,
 487                 },
 488                 {
 489                         .funcname = "DSGETDCNAME",
 490                         .fn       = net_lookup_dsgetdcname,
 491                 },
 492                 {
 493                         .funcname = NULL,
 494                 },
 495         };
 496
 497         if (argc < 1) {
 498                 d_printf(_("\nUsage: \n"));
 499                 return net_lookup_usage(c, argc, argv);
 500         }
 501         for (i=0; table[i].funcname; i++) {
 502                 if (strcasecmp_m(argv[0], table[i].funcname) == 0)
 503                         return table[i].fn(c, argc-1, argv+1);
 504         }
 505
 506         /* Default to lookup a hostname so 'net lookup foo#1b' can be
 507            used instead of 'net lookup host foo#1b'.  The host syntax
 508            is a bit confusing as non #00 names can't really be
 509            considered hosts as such. */
 510
 511         return net_lookup_host(c, argc, argv);
 512 }