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
 110         if (argc > 0)
 111                 domain = argv[0];
 112         else
 113                 domain = c->opt_target_workgroup;
 114
 115         if ( (ctx = talloc_init("net_lookup_ldap")) == NULL ) {
 116                 d_fprintf(stderr,"net_lookup_ldap: talloc_init() %s!\n",
 117                           _("failed"));
 118                 return -1;
 119         }
 120
 121         sitename = sitename_fetch(ctx, domain);
 122
 123         DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
 124
 125         status = ads_dns_query_dcs(ctx,
 126                                    domain,
 127                                    sitename,
 128                                    &dcs,
 129                                    &numdcs);
 130         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 131                 print_ldap_srvlist(dcs, numdcs);
 132                 TALLOC_FREE( ctx );
 133                 return 0;
 134         }
 135
 136         DEBUG(9, ("Looking up PDC for domain %s\n", domain));
 137         if (!get_pdc_ip(domain, &ss)) {
 138                 TALLOC_FREE( ctx );
 139                 return -1;
 140         }
 141
 142         ret = sys_getnameinfo((struct sockaddr *)&ss,
 143                         sizeof(struct sockaddr_storage),
 144                         h_name, sizeof(h_name),
 145                         NULL, 0,
 146                         NI_NAMEREQD);
 147
 148         if (ret) {
 149                 TALLOC_FREE( ctx );
 150                 return -1;
 151         }
 152
 153         DEBUG(9, ("Found PDC with DNS name %s\n", h_name));
 154         domain = strchr(h_name, '.');
 155         if (!domain) {
 156                 TALLOC_FREE( ctx );
 157                 return -1;
 158         }
 159         domain++;
 160
 161         DEBUG(9, ("Looking up ldap for domain %s\n", domain));
 162
 163         status = ads_dns_query_dcs(ctx,
 164                                    domain,
 165                                    sitename,
 166                                    &dcs,
 167                                    &numdcs);
 168         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 169                 print_ldap_srvlist(dcs, numdcs);
 170                 TALLOC_FREE( ctx );
 171                 return 0;
 172         }
 173
 174         TALLOC_FREE( ctx );
 175
 176         return -1;
 177 #endif
 178         DEBUG(1,("No ADS support\n"));
 179         return -1;
 180 }
 181
 182 static int net_lookup_dc(struct net_context *c, int argc, const char **argv)
 183 {
 184         struct ip_service *ip_list;
 185         struct sockaddr_storage ss;
 186         char *pdc_str = NULL;
 187         const char *domain = NULL;
 188         char *sitename = NULL;
 189         int count, i;
 190         char addr[INET6_ADDRSTRLEN];
 191         bool sec_ads = (lp_security() == SEC_ADS);
 192
 193         if (sec_ads) {
 194                 domain = lp_realm();
 195         } else {
 196                 domain = c->opt_target_workgroup;
 197         }
 198
 199         if (argc > 0)
 200                 domain=argv[0];
 201
 202         /* first get PDC */
 203         if (!get_pdc_ip(domain, &ss))
 204                 return -1;
 205
 206         print_sockaddr(addr, sizeof(addr), &ss);
 207         if (asprintf(&pdc_str, "%s", addr) == -1) {
 208                 return -1;
 209         }
 210         d_printf("%s\n", pdc_str);
 211
 212         sitename = sitename_fetch(talloc_tos(), domain);
 213         if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename,
 214                                         &ip_list, &count, sec_ads))) {
 215                 SAFE_FREE(pdc_str);
 216                 TALLOC_FREE(sitename);
 217                 return 0;
 218         }
 219         TALLOC_FREE(sitename);
 220         for (i=0;i<count;i++) {
 221                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
 222                 if (!strequal(pdc_str, addr))
 223                         d_printf("%s\n", addr);
 224         }
 225         SAFE_FREE(pdc_str);
 226         return 0;
 227 }
 228
 229 static int net_lookup_pdc(struct net_context *c, int argc, const char **argv)
 230 {
 231         struct sockaddr_storage ss;
 232         char *pdc_str = NULL;
 233         const char *domain;
 234         char addr[INET6_ADDRSTRLEN];
 235
 236         if (lp_security() == SEC_ADS) {
 237                 domain = lp_realm();
 238         } else {
 239                 domain = c->opt_target_workgroup;
 240         }
 241
 242         if (argc > 0)
 243                 domain=argv[0];
 244
 245         /* first get PDC */
 246         if (!get_pdc_ip(domain, &ss))
 247                 return -1;
 248
 249         print_sockaddr(addr, sizeof(addr), &ss);
 250         if (asprintf(&pdc_str, "%s", addr) == -1) {
 251                 return -1;
 252         }
 253         d_printf("%s\n", pdc_str);
 254         SAFE_FREE(pdc_str);
 255         return 0;
 256 }
 257
 258
 259 static int net_lookup_master(struct net_context *c, int argc, const char **argv)
 260 {
 261         struct sockaddr_storage master_ss;
 262         const char *domain = c->opt_target_workgroup;
 263         char addr[INET6_ADDRSTRLEN];
 264
 265         if (argc > 0)
 266                 domain=argv[0];
 267
 268         if (!find_master_ip(domain, &master_ss))
 269                 return -1;
 270         print_sockaddr(addr, sizeof(addr), &master_ss);
 271         d_printf("%s\n", addr);
 272         return 0;
 273 }
 274
 275 static int net_lookup_kdc(struct net_context *c, int argc, const char **argv)
 276 {
 277 #ifdef HAVE_KRB5
 278         krb5_error_code rc;
 279         krb5_context ctx;
 280         struct ip_service *kdcs;
 281         const char *realm;
 282         int num_kdcs = 0;
 283         int i;
 284         NTSTATUS status;
 285
 286         initialize_krb5_error_table();
 287         rc = krb5_init_context(&ctx);
 288         if (rc) {
 289                 DEBUG(1,("krb5_init_context failed (%s)\n",
 290                          error_message(rc)));
 291                 return -1;
 292         }
 293
 294         if (argc > 0) {
 295                 realm = argv[0];
 296         } else if (lp_realm() && *lp_realm()) {
 297                 realm = lp_realm();
 298         } else {
 299                 char **realms;
 300
 301                 rc = krb5_get_host_realm(ctx, NULL, &realms);
 302                 if (rc) {
 303                         DEBUG(1,("krb5_gethost_realm failed (%s)\n",
 304                                  error_message(rc)));
 305                         return -1;
 306                 }
 307                 realm = (const char *) *realms;
 308         }
 309
 310         status = get_kdc_list(realm, NULL, &kdcs, &num_kdcs);
 311         if (!NT_STATUS_IS_OK(status)) {
 312                 DEBUG(1,("get_kdc_list failed (%s)\n", nt_errstr(status)));
 313                 return -1;
 314         }
 315
 316         for (i = 0; i < num_kdcs; i++) {
 317                 char addr[INET6_ADDRSTRLEN];
 318
 319                 print_sockaddr(addr, sizeof(addr), &kdcs[i].ss);
 320
 321                 d_printf("%s:%u\n", addr, kdcs[i].port);
 322         }
 323
 324         return 0;
 325 #endif
 326         DEBUG(1, ("No kerberos support\n"));
 327         return -1;
 328 }
 329
 330 static int net_lookup_name(struct net_context *c, int argc, const char **argv)
 331 {
 332         const char *dom, *name;
 333         struct dom_sid sid;
 334         enum lsa_SidType type;
 335
 336         if (argc != 1) {
 337                 d_printf("%s\n%s",
 338                          _("Usage:"),
 339                          _(" net lookup name <name>\n"));
 340                 return -1;
 341         }
 342
 343         if (!lookup_name(talloc_tos(), argv[0], LOOKUP_NAME_ALL,
 344                          &dom, &name, &sid, &type)) {
 345                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 346                 return -1;
 347         }
 348
 349         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 350                  type, sid_type_lookup(type), dom, name);
 351         return 0;
 352 }
 353
 354 static int net_lookup_sid(struct net_context *c, int argc, const char **argv)
 355 {
 356         const char *dom, *name;
 357         struct dom_sid sid;
 358         enum lsa_SidType type;
 359
 360         if (argc != 1) {
 361                 d_printf("%s\n%s",
 362                          _("Usage:"),
 363                          _(" net lookup sid <sid>\n"));
 364                 return -1;
 365         }
 366
 367         if (!string_to_sid(&sid, argv[0])) {
 368                 d_printf(_("Could not convert %s to SID\n"), argv[0]);
 369                 return -1;
 370         }
 371
 372         if (!lookup_sid(talloc_tos(), &sid,
 373                         &dom, &name, &type)) {
 374                 d_printf(_("Could not lookup name %s\n"), argv[0]);
 375                 return -1;
 376         }
 377
 378         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 379                  type, sid_type_lookup(type), dom, name);
 380         return 0;
 381 }
 382
 383 static int net_lookup_dsgetdcname(struct net_context *c, int argc, const char **argv)
 384 {
 385         NTSTATUS status;
 386         const char *domain_name = NULL;
 387         const char *site_name = NULL;
 388         uint32_t flags = 0;
 389         struct netr_DsRGetDCNameInfo *info = NULL;
 390         TALLOC_CTX *mem_ctx;
 391         char *s = NULL;
 392
 393         if (argc < 1 || argc > 3) {
 394                 d_printf("%s\n%s",
 395                          _("Usage:"),
 396                          _(" net lookup dsgetdcname "
 397                            "<name> <flags> <sitename>\n"));
 398                 return -1;
 399         }
 400
 401         mem_ctx = talloc_init("net_lookup_dsgetdcname");
 402         if (!mem_ctx) {
 403                 return -1;
 404         }
 405
 406         domain_name = argv[0];
 407
 408         if (argc >= 2)
 409                 sscanf(argv[1], "%x", &flags);
 410
 411         if (!flags) {
 412                 flags |= DS_DIRECTORY_SERVICE_REQUIRED;
 413         }
 414
 415         if (argc == 3) {
 416                 site_name = argv[2];
 417         }
 418
 419         if (!c->msg_ctx) {
 420                 d_fprintf(stderr, _("Could not initialise message context. "
 421                         "Try running as root\n"));
 422                 return -1;
 423         }
 424
 425         status = dsgetdcname(mem_ctx, c->msg_ctx, domain_name, NULL, site_name,
 426                              flags, &info);
 427         if (!NT_STATUS_IS_OK(status)) {
 428                 d_printf(_("failed with: %s\n"), nt_errstr(status));
 429                 TALLOC_FREE(mem_ctx);
 430                 return -1;
 431         }
 432
 433         s = NDR_PRINT_STRUCT_STRING(mem_ctx, netr_DsRGetDCNameInfo, info);
 434         printf("%s\n", s);
 435         TALLOC_FREE(s);
 436
 437         TALLOC_FREE(mem_ctx);
 438         return 0;
 439 }
 440
 441
 442 /* lookup hosts or IP addresses using internal samba lookup fns */
 443 int net_lookup(struct net_context *c, int argc, const char **argv)
 444 {
 445         int i;
 446
 447         struct functable table[] = {
 448                 {"HOST", net_lookup_host},
 449                 {"LDAP", net_lookup_ldap},
 450                 {"DC", net_lookup_dc},
 451                 {"PDC", net_lookup_pdc},
 452                 {"MASTER", net_lookup_master},
 453                 {"KDC", net_lookup_kdc},
 454                 {"NAME", net_lookup_name},
 455                 {"SID", net_lookup_sid},
 456                 {"DSGETDCNAME", net_lookup_dsgetdcname},
 457                 {NULL, NULL}
 458         };
 459
 460         if (argc < 1) {
 461                 d_printf(_("\nUsage: \n"));
 462                 return net_lookup_usage(c, argc, argv);
 463         }
 464         for (i=0; table[i].funcname; i++) {
 465                 if (strcasecmp_m(argv[0], table[i].funcname) == 0)
 466                         return table[i].fn(c, argc-1, argv+1);
 467         }
 468
 469         /* Default to lookup a hostname so 'net lookup foo#1b' can be
 470            used instead of 'net lookup host foo#1b'.  The host syntax
 471            is a bit confusing as non #00 names can't really be
 472            considered hosts as such. */
 473
 474         return net_lookup_host(c, argc, argv);
 475 }