root/source3/utils/net_lookup.c

/* [<][>][^][v][top][bottom][index][help] */

DEFINITIONS

This source file includes following definitions.
  1. net_lookup_usage
  2. net_lookup_host
  3. print_ldap_srvlist
  4. net_lookup_ldap
  5. net_lookup_dc
  6. net_lookup_pdc
  7. net_lookup_master
  8. net_lookup_adskdc
  9. net_lookup_kdc
  10. net_lookup_name
  11. net_lookup_sid
  12. net_lookup_dsgetdcname
  13. net_lookup

   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)
     /* [<][>][^][v][top][bottom][index][help] */
  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)
     /* [<][>][^][v][top][bottom][index][help] */
  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 )
     /* [<][>][^][v][top][bottom][index][help] */
  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)
     /* [<][>][^][v][top][bottom][index][help] */
  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)
     /* [<][>][^][v][top][bottom][index][help] */
 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         if (asprintf(&pdc_str, "%s", addr) == -1) {
 200                 return -1;
 201         }
 202         d_printf("%s\n", pdc_str);
 203 
 204         sitename = sitename_fetch(domain);
 205         if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename,
 206                                         &ip_list, &count, sec_ads))) {
 207                 SAFE_FREE(pdc_str);
 208                 SAFE_FREE(sitename);
 209                 return 0;
 210         }
 211         SAFE_FREE(sitename);
 212         for (i=0;i<count;i++) {
 213                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
 214                 if (!strequal(pdc_str, addr))
 215                         d_printf("%s\n", addr);
 216         }
 217         SAFE_FREE(pdc_str);
 218         return 0;
 219 }
 220 
 221 static int net_lookup_pdc(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 222 {
 223         struct sockaddr_storage ss;
 224         char *pdc_str = NULL;
 225         const char *domain;
 226         char addr[INET6_ADDRSTRLEN];
 227 
 228         if (lp_security() == SEC_ADS) {
 229                 domain = lp_realm();
 230         } else {
 231                 domain = c->opt_target_workgroup;
 232         }
 233 
 234         if (argc > 0)
 235                 domain=argv[0];
 236 
 237         /* first get PDC */
 238         if (!get_pdc_ip(domain, &ss))
 239                 return -1;
 240 
 241         print_sockaddr(addr, sizeof(addr), &ss);
 242         if (asprintf(&pdc_str, "%s", addr) == -1) {
 243                 return -1;
 244         }
 245         d_printf("%s\n", pdc_str);
 246         SAFE_FREE(pdc_str);
 247         return 0;
 248 }
 249 
 250 
 251 static int net_lookup_master(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 252 {
 253         struct sockaddr_storage master_ss;
 254         const char *domain = c->opt_target_workgroup;
 255         char addr[INET6_ADDRSTRLEN];
 256 
 257         if (argc > 0)
 258                 domain=argv[0];
 259 
 260         if (!find_master_ip(domain, &master_ss))
 261                 return -1;
 262         print_sockaddr(addr, sizeof(addr), &master_ss);
 263         d_printf("%s\n", addr);
 264         return 0;
 265 }
 266 
 267 
 268 /* Look up a KDC using the documented AD SRV records
 269    only.  Does not need ADS configured or even built */
 270 
 271 static int net_lookup_adskdc(int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 272 {
 273         char *realm=NULL;
 274         char *sitename=NULL;
 275         struct dns_rr_srv *dclist;
 276         int numdcs, i;
 277         NTSTATUS status;
 278         struct addrinfo hints;
 279 
 280         /* First, see if the realm and sitename were
 281            explicitly specified */
 282 
 283         if (argc > 0)
 284                 realm = talloc_strdup(NULL, argv[0]);
 285         if (argc > 1)
 286                 sitename = talloc_strdup(realm, argv[1]);
 287 
 288 #ifdef HAVE_ADS
 289         if (!realm && (lp_security() == SEC_ADS)) {
 290                 /* auto-detect realm and site if we can */
 291         }
 292 #endif
 293 
 294         if (!realm) {
 295                 d_printf("No realm specified!\n");
 296                 return -1;
 297         }
 298 
 299         status = ads_dns_query_kdcs(realm, realm,
 300                                     sitename,
 301                                     &dclist, &numdcs);
 302 
 303         if (!NT_STATUS_IS_OK(status)) {
 304                 d_printf("No KDC's found.\n");
 305                 TALLOC_FREE(realm);
 306                 return -1;
 307         }
 308 
 309         ZERO_STRUCT(hints);
 310         /* only request IPv[46] address if
 311            we have one configured - for the future
 312            will require better logic on displaying
 313            the returned addresses.
 314         */
 315         hints.ai_flags = AI_ADDRCONFIG;
 316         hints.ai_socktype = SOCK_DGRAM;
 317 
 318         for(i=0; i<numdcs; i++) {
 319                 struct addrinfo *out;
 320                 int ret;
 321                 char *fq_hostname = talloc_asprintf(realm, "%s.",
 322                                                     dclist[i].hostname);
 323 
 324                 ret = getaddrinfo(fq_hostname,
 325                                   NULL, &hints, &out);
 326                 if (ret == 0) {
 327                         struct addrinfo *cur = out;
 328                         char *num_host = talloc_array(realm, char, NI_MAXHOST);
 329 
 330                         while(cur) {
 331                                 if (cur->ai_family == AF_INET ||
 332                                     cur->ai_family == AF_INET6) {
 333                                         getnameinfo((struct sockaddr *) cur->ai_addr,
 334                                                     cur->ai_addrlen, num_host, NI_MAXHOST,
 335                                                     NULL, 0, NI_NUMERICHOST);
 336                                         d_printf("%s \t %s\n",
 337                                                  num_host,
 338                                                  dclist[i].hostname);
 339                                 }
 340                                 cur = cur->ai_next;
 341                         }
 342                         freeaddrinfo(out);
 343                 }
 344         }
 345         TALLOC_FREE(realm);
 346         return 0;
 347 }
 348 
 349 
 350 static int net_lookup_kdc(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 351 {
 352 #ifdef HAVE_KRB5
 353         krb5_error_code rc;
 354         krb5_context ctx;
 355         struct sockaddr_in *addrs;
 356         int num_kdcs,i;
 357         krb5_data realm;
 358         char **realms;
 359 
 360         initialize_krb5_error_table();
 361         rc = krb5_init_context(&ctx);
 362         if (rc) {
 363                 DEBUG(1,("krb5_init_context failed (%s)\n",
 364                          error_message(rc)));
 365                 return -1;
 366         }
 367 
 368         if (argc>0) {
 369                 realm.data = CONST_DISCARD(char *, argv[0]);
 370                 realm.length = strlen(argv[0]);
 371         } else if (lp_realm() && *lp_realm()) {
 372                 realm.data = lp_realm();
 373                 realm.length = strlen((const char *)realm.data);
 374         } else {
 375                 rc = krb5_get_host_realm(ctx, NULL, &realms);
 376                 if (rc) {
 377                         DEBUG(1,("krb5_gethost_realm failed (%s)\n",
 378                                  error_message(rc)));
 379                         return -1;
 380                 }
 381                 realm.data = (char *) *realms;
 382                 realm.length = strlen((const char *)realm.data);
 383         }
 384 
 385         rc = smb_krb5_locate_kdc(ctx, &realm, (struct sockaddr **)(void *)&addrs, &num_kdcs, 0);
 386         if (rc) {
 387                 DEBUG(1, ("smb_krb5_locate_kdc failed (%s)\n", error_message(rc)));
 388                 return -1;
 389         }
 390         for (i=0;i<num_kdcs;i++)
 391                 if (addrs[i].sin_family == AF_INET) 
 392                         d_printf("%s:%hd\n", inet_ntoa(addrs[i].sin_addr),
 393                                  ntohs(addrs[i].sin_port));
 394         return 0;
 395 
 396 #endif  
 397         DEBUG(1, ("No kerberos support\n"));
 398         return -1;
 399 }
 400 
 401 static int net_lookup_name(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 402 {
 403         const char *dom, *name;
 404         DOM_SID sid;
 405         enum lsa_SidType type;
 406 
 407         if (argc != 1) {
 408                 d_printf("usage: net lookup name <name>\n");
 409                 return -1;
 410         }
 411 
 412         if (!lookup_name(talloc_tos(), argv[0], LOOKUP_NAME_ALL,
 413                          &dom, &name, &sid, &type)) {
 414                 d_printf("Could not lookup name %s\n", argv[0]);
 415                 return -1;
 416         }
 417 
 418         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 419                  type, sid_type_lookup(type), dom, name);
 420         return 0;
 421 }
 422 
 423 static int net_lookup_sid(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 424 {
 425         const char *dom, *name;
 426         DOM_SID sid;
 427         enum lsa_SidType type;
 428 
 429         if (argc != 1) {
 430                 d_printf("usage: net lookup sid <sid>\n");
 431                 return -1;
 432         }
 433 
 434         if (!string_to_sid(&sid, argv[0])) {
 435                 d_printf("Could not convert %s to SID\n", argv[0]);
 436                 return -1;
 437         }
 438 
 439         if (!lookup_sid(talloc_tos(), &sid,
 440                         &dom, &name, &type)) {
 441                 d_printf("Could not lookup name %s\n", argv[0]);
 442                 return -1;
 443         }
 444 
 445         d_printf("%s %d (%s) %s\\%s\n", sid_string_tos(&sid),
 446                  type, sid_type_lookup(type), dom, name);
 447         return 0;
 448 }
 449 
 450 static int net_lookup_dsgetdcname(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 451 {
 452         NTSTATUS status;
 453         const char *domain_name = NULL;
 454         const char *site_name = NULL;
 455         uint32_t flags = 0;
 456         struct netr_DsRGetDCNameInfo *info = NULL;
 457         TALLOC_CTX *mem_ctx;
 458         char *s = NULL;
 459 
 460         if (argc < 1 || argc > 3) {
 461                 d_printf("usage: net lookup dsgetdcname "
 462                          "<name> <flags> <sitename>\n");
 463                 return -1;
 464         }
 465 
 466         mem_ctx = talloc_init("net_lookup_dsgetdcname");
 467         if (!mem_ctx) {
 468                 return -1;
 469         }
 470 
 471         domain_name = argv[0];
 472 
 473         if (argc >= 2)
 474                 sscanf(argv[1], "%x", &flags);
 475 
 476         if (!flags) {
 477                 flags |= DS_DIRECTORY_SERVICE_REQUIRED;
 478         }
 479 
 480         if (argc == 3) {
 481                 site_name = argv[2];
 482         }
 483 
 484         status = dsgetdcname(mem_ctx, NULL, domain_name, NULL, site_name,
 485                              flags, &info);
 486         if (!NT_STATUS_IS_OK(status)) {
 487                 d_printf("failed with: %s\n", nt_errstr(status));
 488                 TALLOC_FREE(mem_ctx);
 489                 return -1;
 490         }
 491 
 492         s = NDR_PRINT_STRUCT_STRING(mem_ctx, netr_DsRGetDCNameInfo, info);
 493         printf("%s\n", s);
 494         TALLOC_FREE(s);
 495 
 496         TALLOC_FREE(mem_ctx);
 497         return 0;
 498 }
 499 
 500 
 501 /* lookup hosts or IP addresses using internal samba lookup fns */
 502 int net_lookup(struct net_context *c, int argc, const char **argv)
     /* [<][>][^][v][top][bottom][index][help] */
 503 {
 504         int i;
 505 
 506         struct functable table[] = {
 507                 {"HOST", net_lookup_host},
 508                 {"LDAP", net_lookup_ldap},
 509                 {"DC", net_lookup_dc},
 510                 {"PDC", net_lookup_pdc},
 511                 {"MASTER", net_lookup_master},
 512                 {"ADSKDC", net_lookup_adskdc},
 513                 {"KDC", net_lookup_kdc},
 514                 {"NAME", net_lookup_name},
 515                 {"SID", net_lookup_sid},
 516                 {"DSGETDCNAME", net_lookup_dsgetdcname},
 517                 {NULL, NULL}
 518         };
 519 
 520         if (argc < 1) {
 521                 d_printf("\nUsage: \n");
 522                 return net_lookup_usage(c, argc, argv);
 523         }
 524         for (i=0; table[i].funcname; i++) {
 525                 if (StrCaseCmp(argv[0], table[i].funcname) == 0)
 526                         return table[i].fn(c, argc-1, argv+1);
 527         }
 528 
 529         /* Default to lookup a hostname so 'net lookup foo#1b' can be
 530            used instead of 'net lookup host foo#1b'.  The host syntax
 531            is a bit confusing as non #00 names can't really be
 532            considered hosts as such. */
 533 
 534         return net_lookup_host(c, argc, argv);
 535 }

/* [<][>][^][v][top][bottom][index][help] */