source/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
  22 int net_lookup_usage(struct net_context *c, int argc, const char **argv)
  23 {
  24         d_printf(
  25 "  net lookup [host] HOSTNAME[#<type>]\n\tgives IP for a hostname\n\n"
  26 "  net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
  27 "  net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
  28 "  net lookup pdc [domain|realm]\n\tgives IP of realm's kerberos KDC\n\n"
  29 "  net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
  30 "  net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
  31 "  net lookup name [name]\n\tLookup name's sid and type\n\n"
  32 "  net lookup sid [sid]\n\tGive sid's name and type\n\n"
  33 "  net lookup dsgetdcname [name] [flags] [sitename]\n\n"
  34 );
  35         return -1;
  36 }
  37
  38 /* lookup a hostname giving an IP */
  39 static int net_lookup_host(struct net_context *c, int argc, const char **argv)
  40 {
  41         struct sockaddr_storage ss;
  42         int name_type = 0x20;
  43         char addr[INET6_ADDRSTRLEN];
  44         const char *name = argv[0];
  45         char *p;
  46
  47         if (argc == 0)
  48                 return net_lookup_usage(c, argc, argv);
  49
  50         p = strchr_m(name,'#');
  51         if (p) {
  52                 *p = '\0';
  53                 sscanf(++p,"%x",&name_type);
  54         }
  55
  56         if (!resolve_name(name, &ss, name_type)) {
  57                 /* we deliberately use DEBUG() here to send it to stderr
  58                    so scripts aren't mucked up */
  59                 DEBUG(0,("Didn't find %s#%02x\n", name, name_type));
  60                 return -1;
  61         }
  62
  63         print_sockaddr(addr, sizeof(addr), &ss);
  64         d_printf("%s\n", addr);
  65         return 0;
  66 }
  67
  68 #ifdef HAVE_ADS
  69 static void print_ldap_srvlist(struct dns_rr_srv *dclist, int numdcs )
  70 {
  71         struct sockaddr_storage ss;
  72         int i;
  73
  74         for ( i=0; i<numdcs; i++ ) {
  75                 if (resolve_name(dclist[i].hostname, &ss, 0x20) ) {
  76                         char addr[INET6_ADDRSTRLEN];
  77                         print_sockaddr(addr, sizeof(addr), &ss);
  78 #ifdef HAVE_IPV6
  79                         if (ss.ss_family == AF_INET6) {
  80                                 d_printf("[%s]:%d\n", addr, dclist[i].port);
  81                         }
  82 #endif
  83                         if (ss.ss_family == AF_INET) {
  84                                 d_printf("%s:%d\n", addr, dclist[i].port);
  85                         }
  86                 }
  87         }
  88 }
  89 #endif
  90
  91 static int net_lookup_ldap(struct net_context *c, int argc, const char **argv)
  92 {
  93 #ifdef HAVE_ADS
  94         const char *domain;
  95         struct sockaddr_storage ss;
  96         struct dns_rr_srv *dcs = NULL;
  97         int numdcs = 0;
  98         char *sitename;
  99         TALLOC_CTX *ctx;
 100         NTSTATUS status;
 101         int ret;
 102         char h_name[MAX_DNS_NAME_LENGTH];
 103
 104         if (argc > 0)
 105                 domain = argv[0];
 106         else
 107                 domain = c->opt_target_workgroup;
 108
 109         sitename = sitename_fetch(domain);
 110
 111         if ( (ctx = talloc_init("net_lookup_ldap")) == NULL ) {
 112                 d_fprintf(stderr, "net_lookup_ldap: talloc_init() failed!\n");
 113                 SAFE_FREE(sitename);
 114                 return -1;
 115         }
 116
 117         DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
 118
 119         status = ads_dns_query_dcs( ctx, domain, sitename, &dcs, &numdcs );
 120         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 121                 print_ldap_srvlist(dcs, numdcs);
 122                 TALLOC_FREE( ctx );
 123                 SAFE_FREE(sitename);
 124                 return 0;
 125         }
 126
 127         DEBUG(9, ("Looking up PDC for domain %s\n", domain));
 128         if (!get_pdc_ip(domain, &ss)) {
 129                 TALLOC_FREE( ctx );
 130                 SAFE_FREE(sitename);
 131                 return -1;
 132         }
 133
 134         ret = sys_getnameinfo((struct sockaddr *)&ss,
 135                         sizeof(struct sockaddr_storage),
 136                         h_name, sizeof(h_name),
 137                         NULL, 0,
 138                         NI_NAMEREQD);
 139
 140         if (ret) {
 141                 TALLOC_FREE( ctx );
 142                 SAFE_FREE(sitename);
 143                 return -1;
 144         }
 145
 146         DEBUG(9, ("Found PDC with DNS name %s\n", h_name));
 147         domain = strchr(h_name, '.');
 148         if (!domain) {
 149                 TALLOC_FREE( ctx );
 150                 SAFE_FREE(sitename);
 151                 return -1;
 152         }
 153         domain++;
 154
 155         DEBUG(9, ("Looking up ldap for domain %s\n", domain));
 156
 157         status = ads_dns_query_dcs( ctx, domain, sitename, &dcs, &numdcs );
 158         if ( NT_STATUS_IS_OK(status) && numdcs ) {
 159                 print_ldap_srvlist(dcs, numdcs);
 160                 TALLOC_FREE( ctx );
 161                 SAFE_FREE(sitename);
 162                 return 0;
 163         }
 164
 165         TALLOC_FREE( ctx );
 166         SAFE_FREE(sitename);
 167
 168         return -1;
 169 #endif
 170         DEBUG(1,("No ADS support\n"));
 171         return -1;
 172 }
 173
 174 static int net_lookup_dc(struct net_context *c, int argc, const char **argv)
 175 {
 176         struct ip_service *ip_list;
 177         struct sockaddr_storage ss;
 178         char *pdc_str = NULL;
 179         const char *domain = NULL;
 180         char *sitename = NULL;
 181         int count, i;
 182         char addr[INET6_ADDRSTRLEN];
 183         bool sec_ads = (lp_security() == SEC_ADS);
 184
 185         if (sec_ads) {
 186                 domain = lp_realm();
 187         } else {
 188                 domain = c->opt_target_workgroup;
 189         }
 190
 191         if (argc > 0)
 192                 domain=argv[0];
 193
 194         /* first get PDC */
 195         if (!get_pdc_ip(domain, &ss))
 196                 return -1;
 197
 198         print_sockaddr(addr, sizeof(addr), &ss);
 199         asprintf(&pdc_str, "%s", addr);
 200         d_printf("%s\n", pdc_str);
 201
 202         sitename = sitename_fetch(domain);
 203         if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename,
 204                                         &ip_list, &count, sec_ads))) {
 205                 SAFE_FREE(pdc_str);
 206                 SAFE_FREE(sitename);
 207                 return 0;
 208         }
 209         SAFE_FREE(sitename);
 210         for (i=0;i<count;i++) {
 211                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
 212                 if (!strequal(pdc_str, addr))
 213                         d_printf("%s\n", addr);
 214         }
 215         SAFE_FREE(pdc_str);
 216         return 0;
 217 }
 218
 219 static int net_lookup_pdc(struct net_context *c, int argc, const char **argv)
 220 {
 221         struct sockaddr_storage ss;
 222         char *pdc_str = NULL;
 223         const char *domain;
 224         char addr[INET6_ADDRSTRLEN];
 225
 226         if (lp_security() == SEC_ADS) {
 227                 domain = lp_realm();
 228         } else {
 229                 domain = c->opt_target_workgroup;
 230         }
 231
 232         if (argc > 0)
 233                 domain=argv[0];
 234
 235         /* first get PDC */
 236         if (!get_pdc_ip(domain, &ss))
 237                 return -1;
 238
 239         print_sockaddr(addr, sizeof(addr), &ss);
 240         asprintf(&pdc_str, "%s", addr);
 241         d_printf("%s\n", pdc_str);
 242         SAFE_FREE(pdc_str);
 243         return 0;
 244 }
 245
 246
 247 static int net_lookup_master(struct net_context *c, int argc, const char **argv)
 248 {
 249         struct sockaddr_storage master_ss;
 250         const char *domain = c->opt_target_workgroup;
 251         char addr[INET6_ADDRSTRLEN];
 252
 253         if (argc > 0)
 254                 domain=argv[0];
 255
 256         if (!find_master_ip(domain, &master_ss))
 257                 return -1;
 258         print_sockaddr(addr, sizeof(addr), &master_ss);
 259         d_printf("%s\n", addr);
 260         return 0;
 261 }
 262
 263 static int net_lookup_kdc(struct net_context *c, int argc, const char **argv)
 264 {
 265 #ifdef HAVE_KRB5
 266         krb5_error_code rc;
 267         krb5_context ctx;
 268         struct sockaddr_in *addrs;
 269         int num_kdcs,i;
 270         krb5_data realm;
 271         char **realms;
 272
 273         initialize_krb5_error_table();
 274         rc = krb5_init_context(&ctx);
 275         if (rc) {
 276                 DEBUG(1,("krb5_init_context failed (%s)\n",
 277                          error_message(rc)));
 278                 return -1;
 279         }
 280
 281         if (argc>0) {
 282                 realm.data = CONST_DISCARD(char *, argv[0]);
 283                 realm.length = strlen(argv[0]);
 284         } else if (lp_realm() && *lp_realm()) {
 285                 realm.data = lp_realm();
 286                 realm.length = strlen((const char *)realm.data);
 287         } else {
 288                 rc = krb5_get_host_realm(ctx, NULL, &realms);
 289                 if (rc) {
 290                         DEBUG(1,("krb5_gethost_realm failed (%s)\n",
 291                                  error_message(rc)));
 292                         return -1;
 293                 }
 294                 realm.data = (char *) *realms;
 295                 realm.length = strlen((const char *)realm.data);
 296         }
 297
 298         rc = smb_krb5_locate_kdc(ctx, &realm, (struct sockaddr **)(void *)&addrs, &num_kdcs, 0);
 299         if (rc) {
 300                 DEBUG(1, ("smb_krb5_locate_kdc failed (%s)\n", error_message(rc)));
 301                 return -1;
 302         }
 303         for (i=0;i<num_kdcs;i++)
 304                 if (addrs[i].sin_family == AF_INET)
 305                         d_printf("%s:%hd\n", inet_ntoa(addrs[i].sin_addr),
 306                                  ntohs(addrs[i].sin_port));
 307         return 0;
 308
 309 #endif
 310         DEBUG(1, ("No kerberos support\n"));
 311         return -1;
 312 }
 313
 314 static int net_lookup_name(struct net_context *c, int argc, const char **argv)
 315 {
 316         const char *dom, *name;
 317         DOM_SID sid;
 318         enum lsa_SidType type;
 319
 320         if (argc != 1) {
 321                 d_printf("usage: net lookup name <name>\n");
 322                 return -1;
 323         }
 324
 325         if (!lookup_name(talloc_tos(), argv[0], LOOKUP_NAME_ALL,
 326                          &dom, &name, &sid, &type)) {
 327                 d_printf("Could not lookup name %s\n", argv[0]);
 328                 return -1;
 329         }
 330
 331         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 332                  type, sid_type_lookup(type), dom, name);
 333         return 0;
 334 }
 335
 336 static int net_lookup_sid(struct net_context *c, int argc, const char **argv)
 337 {
 338         const char *dom, *name;
 339         DOM_SID sid;
 340         enum lsa_SidType type;
 341
 342         if (argc != 1) {
 343                 d_printf("usage: net lookup sid <sid>\n");
 344                 return -1;
 345         }
 346
 347         if (!string_to_sid(&sid, argv[0])) {
 348                 d_printf("Could not convert %s to SID\n", argv[0]);
 349                 return -1;
 350         }
 351
 352         if (!lookup_sid(talloc_tos(), &sid,
 353                         &dom, &name, &type)) {
 354                 d_printf("Could not lookup name %s\n", argv[0]);
 355                 return -1;
 356         }
 357
 358         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 359                  type, sid_type_lookup(type), dom, name);
 360         return 0;
 361 }
 362
 363 static int net_lookup_dsgetdcname(struct net_context *c, int argc, const char **argv)
 364 {
 365         NTSTATUS status;
 366         const char *domain_name = NULL;
 367         const char *site_name = NULL;
 368         uint32_t flags = 0;
 369         struct netr_DsRGetDCNameInfo *info = NULL;
 370         TALLOC_CTX *mem_ctx;
 371         char *s = NULL;
 372
 373         if (argc < 1 || argc > 3) {
 374                 d_printf("usage: net lookup dsgetdcname "
 375                          "<name> <flags> <sitename>\n");
 376                 return -1;
 377         }
 378
 379         mem_ctx = talloc_init("net_lookup_dsgetdcname");
 380         if (!mem_ctx) {
 381                 return -1;
 382         }
 383
 384         domain_name = argv[0];
 385
 386         if (argc >= 2)
 387                 sscanf(argv[1], "%x", &flags);
 388
 389         if (!flags) {
 390                 flags |= DS_DIRECTORY_SERVICE_REQUIRED;
 391         }
 392
 393         if (argc == 3) {
 394                 site_name = argv[2];
 395         }
 396
 397         status = dsgetdcname(mem_ctx, NULL, domain_name, NULL, site_name,
 398                              flags, &info);
 399         if (!NT_STATUS_IS_OK(status)) {
 400                 d_printf("failed with: %s\n", nt_errstr(status));
 401                 TALLOC_FREE(mem_ctx);
 402                 return -1;
 403         }
 404
 405         s = NDR_PRINT_STRUCT_STRING(mem_ctx, netr_DsRGetDCNameInfo, info);
 406         printf("%s\n", s);
 407         TALLOC_FREE(s);
 408
 409         TALLOC_FREE(mem_ctx);
 410         return 0;
 411 }
 412
 413
 414 /* lookup hosts or IP addresses using internal samba lookup fns */
 415 int net_lookup(struct net_context *c, int argc, const char **argv)
 416 {
 417         int i;
 418
 419         struct functable table[] = {
 420                 {"HOST", net_lookup_host},
 421                 {"LDAP", net_lookup_ldap},
 422                 {"DC", net_lookup_dc},
 423                 {"PDC", net_lookup_pdc},
 424                 {"MASTER", net_lookup_master},
 425                 {"KDC", net_lookup_kdc},
 426                 {"NAME", net_lookup_name},
 427                 {"SID", net_lookup_sid},
 428                 {"DSGETDCNAME", net_lookup_dsgetdcname},
 429                 {NULL, NULL}
 430         };
 431
 432         if (argc < 1) {
 433                 d_printf("\nUsage: \n");
 434                 return net_lookup_usage(c, argc, argv);
 435         }
 436         for (i=0; table[i].funcname; i++) {
 437                 if (StrCaseCmp(argv[0], table[i].funcname) == 0)
 438                         return table[i].fn(c, argc-1, argv+1);
 439         }
 440
 441         /* Default to lookup a hostname so 'net lookup foo#1b' can be
 442            used instead of 'net lookup host foo#1b'.  The host syntax
 443            is a bit confusing as non #00 names can't really be
 444            considered hosts as such. */
 445
 446         return net_lookup_host(c, argc, argv);
 447 }