source3/utils/net_util.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Helper routines for net
   4  *  Copyright (C) Volker Lendecke 2006
   5  *  Copyright (C) Kai Blin 2008
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21
  22 #include "includes.h"
  23 #include "utils/net.h"
  24 #include "libsmb/namequery.h"
  25 #include "rpc_client/cli_pipe.h"
  26 #include "../librpc/gen_ndr/ndr_lsa_c.h"
  27 #include "rpc_client/cli_lsarpc.h"
  28 #include "../librpc/gen_ndr/ndr_dssetup_c.h"
  29 #include "secrets.h"
  30 #include "../libcli/security/security.h"
  31 #include "libsmb/libsmb.h"
  32 #include "lib/param/param.h"
  33 #include "auth/gensec/gensec.h"
  34 #include "libcli/auth/netlogon_creds_cli.h"
  35 #include "lib/cmdline/cmdline.h"
  36
  37 NTSTATUS net_rpc_lookup_name(struct net_context *c,
  38                              TALLOC_CTX *mem_ctx, struct cli_state *cli,
  39                              const char *name, const char **ret_domain,
  40                              const char **ret_name, struct dom_sid *ret_sid,
  41                              enum lsa_SidType *ret_type)
  42 {
  43         struct rpc_pipe_client *lsa_pipe = NULL;
  44         struct policy_handle pol;
  45         NTSTATUS status, result;
  46         const char **dom_names;
  47         struct dom_sid *sids;
  48         enum lsa_SidType *types;
  49         struct dcerpc_binding_handle *b;
  50
  51         ZERO_STRUCT(pol);
  52
  53         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc,
  54                                           &lsa_pipe);
  55         if (!NT_STATUS_IS_OK(status)) {
  56                 d_fprintf(stderr, _("Could not initialise lsa pipe\n"));
  57                 return status;
  58         }
  59
  60         b = lsa_pipe->binding_handle;
  61
  62         status = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, false,
  63                                         SEC_FLAG_MAXIMUM_ALLOWED,
  64                                         &pol);
  65         if (!NT_STATUS_IS_OK(status)) {
  66                 d_fprintf(stderr, "open_policy %s: %s\n", _("failed"),
  67                           nt_errstr(status));
  68                 return status;
  69         }
  70
  71         status = rpccli_lsa_lookup_names(lsa_pipe, mem_ctx, &pol, 1,
  72                                          &name, &dom_names, 1, &sids, &types);
  73
  74         if (!NT_STATUS_IS_OK(status)) {
  75                 /* This can happen easily, don't log an error */
  76                 goto done;
  77         }
  78
  79         if (ret_domain != NULL) {
  80                 *ret_domain = dom_names[0];
  81         }
  82         if (ret_name != NULL) {
  83                 *ret_name = talloc_strdup(mem_ctx, name);
  84         }
  85         if (ret_sid != NULL) {
  86                 sid_copy(ret_sid, &sids[0]);
  87         }
  88         if (ret_type != NULL) {
  89                 *ret_type = types[0];
  90         }
  91
  92  done:
  93         if (is_valid_policy_hnd(&pol)) {
  94                 dcerpc_lsa_Close(b, mem_ctx, &pol, &result);
  95         }
  96         TALLOC_FREE(lsa_pipe);
  97
  98         return status;
  99 }
 100
 101 /****************************************************************************
 102  Connect to \\server\service.
 103 ****************************************************************************/
 104
 105 NTSTATUS connect_to_service(struct net_context *c,
 106                             struct cli_state **cli_ctx,
 107                             const struct sockaddr_storage *server_ss,
 108                             const char *server_name,
 109                             const char *service_name,
 110                             const char *service_type)
 111 {
 112         NTSTATUS nt_status;
 113         int flags = 0;
 114
 115         if (strequal(service_type, "IPC")) {
 116                 flags |= CLI_FULL_CONNECTION_IPC;
 117         }
 118
 119         nt_status = cli_full_connection_creds(c,
 120                                               cli_ctx,
 121                                               NULL,
 122                                               server_name,
 123                                               server_ss,
 124                                               c->opt_port,
 125                                               service_name,
 126                                               service_type,
 127                                               c->creds,
 128                                               flags);
 129         if (!NT_STATUS_IS_OK(nt_status)) {
 130                 d_fprintf(stderr, _("Could not connect to server %s\n"),
 131                           server_name);
 132
 133                 /* Display a nicer message depending on the result */
 134
 135                 if (NT_STATUS_V(nt_status) ==
 136                     NT_STATUS_V(NT_STATUS_LOGON_FAILURE))
 137                         d_fprintf(stderr,
 138                                   _("The username or password was not "
 139                                     "correct.\n"));
 140
 141                 if (NT_STATUS_V(nt_status) ==
 142                     NT_STATUS_V(NT_STATUS_ACCOUNT_LOCKED_OUT))
 143                         d_fprintf(stderr, _("The account was locked out.\n"));
 144
 145                 if (NT_STATUS_V(nt_status) ==
 146                     NT_STATUS_V(NT_STATUS_ACCOUNT_DISABLED))
 147                         d_fprintf(stderr, _("The account was disabled.\n"));
 148                 return nt_status;
 149         }
 150
 151         return nt_status;
 152 }
 153
 154 /****************************************************************************
 155  Connect to \\server\ipc$.
 156 ****************************************************************************/
 157
 158 NTSTATUS connect_to_ipc(struct net_context *c,
 159                         struct cli_state **cli_ctx,
 160                         const struct sockaddr_storage *server_ss,
 161                         const char *server_name)
 162 {
 163         return connect_to_service(c, cli_ctx, server_ss, server_name, "IPC$",
 164                                   "IPC");
 165 }
 166
 167 /****************************************************************************
 168  Connect to \\server\ipc$ anonymously.
 169 ****************************************************************************/
 170
 171 NTSTATUS connect_to_ipc_anonymous(struct net_context *c,
 172                                 struct cli_state **cli_ctx,
 173                                 const struct sockaddr_storage *server_ss,
 174                                 const char *server_name)
 175 {
 176         NTSTATUS nt_status;
 177         struct cli_credentials *anon_creds = NULL;
 178
 179         anon_creds = cli_credentials_init_anon(c);
 180         if (anon_creds == NULL) {
 181                 DBG_ERR("cli_credentials_init_anon() failed\n");
 182                 return NT_STATUS_NO_MEMORY;
 183         }
 184
 185         nt_status = cli_full_connection_creds(c,
 186                                               cli_ctx,
 187                                               c->opt_requester_name,
 188                                               server_name,
 189                                               server_ss,
 190                                               c->opt_port,
 191                                               "IPC$",
 192                                               "IPC",
 193                                               anon_creds,
 194                                               CLI_FULL_CONNECTION_IPC);
 195
 196         if (NT_STATUS_IS_OK(nt_status)) {
 197                 return nt_status;
 198         } else {
 199                 DEBUG(1,("Cannot connect to server (anonymously).  Error was %s\n", nt_errstr(nt_status)));
 200                 return nt_status;
 201         }
 202 }
 203
 204 /**
 205  * Connect a server and open a given pipe
 206  *
 207  * @param cli_dst               A cli_state
 208  * @param pipe                  The pipe to open
 209  * @param got_pipe              boolean that stores if we got a pipe
 210  *
 211  * @return Normal NTSTATUS return.
 212  **/
 213 NTSTATUS connect_dst_pipe(struct net_context *c, struct cli_state **cli_dst,
 214                           struct rpc_pipe_client **pp_pipe_hnd,
 215                           const struct ndr_interface_table *table)
 216 {
 217         NTSTATUS nt_status;
 218         char *server_name = SMB_STRDUP("127.0.0.1");
 219         struct cli_state *cli_tmp = NULL;
 220         struct rpc_pipe_client *pipe_hnd = NULL;
 221
 222         if (server_name == NULL) {
 223                 return NT_STATUS_NO_MEMORY;
 224         }
 225
 226         if (c->opt_destination) {
 227                 SAFE_FREE(server_name);
 228                 if ((server_name = SMB_STRDUP(c->opt_destination)) == NULL) {
 229                         return NT_STATUS_NO_MEMORY;
 230                 }
 231         }
 232
 233         /* make a connection to a named pipe */
 234         nt_status = connect_to_ipc(c, &cli_tmp, NULL, server_name);
 235         if (!NT_STATUS_IS_OK(nt_status)) {
 236                 SAFE_FREE(server_name);
 237                 return nt_status;
 238         }
 239
 240         nt_status = cli_rpc_pipe_open_noauth(cli_tmp, table,
 241                                              &pipe_hnd);
 242         if (!NT_STATUS_IS_OK(nt_status)) {
 243                 DEBUG(0, ("couldn't not initialize pipe\n"));
 244                 cli_shutdown(cli_tmp);
 245                 SAFE_FREE(server_name);
 246                 return nt_status;
 247         }
 248
 249         *cli_dst = cli_tmp;
 250         *pp_pipe_hnd = pipe_hnd;
 251         SAFE_FREE(server_name);
 252
 253         return nt_status;
 254 }
 255
 256 /****************************************************************************
 257  Use the local machine account (krb) and password for this session.
 258 ****************************************************************************/
 259
 260 int net_use_krb_machine_account(struct net_context *c)
 261 {
 262         struct db_context *db_ctx = NULL;
 263
 264         if (!secrets_init()) {
 265                 d_fprintf(stderr,_("ERROR: Unable to open secrets database\n"));
 266                 exit(1);
 267         }
 268
 269         db_ctx = secrets_db_ctx();
 270
 271         cli_credentials_set_machine_account_db_ctx(c->creds, c->lp_ctx, db_ctx);
 272         c->explicit_credentials = true;
 273         return 0;
 274 }
 275
 276 bool net_find_server(struct net_context *c,
 277                         const char *domain,
 278                         unsigned flags,
 279                         struct sockaddr_storage *server_ss,
 280                         char **server_name)
 281 {
 282         const char *d = domain ? domain : c->opt_target_workgroup;
 283
 284         if (c->opt_host) {
 285                 *server_name = SMB_STRDUP(c->opt_host);
 286         }
 287
 288         if (c->opt_have_ip) {
 289                 *server_ss = c->opt_dest_ip;
 290                 if (!*server_name) {
 291                         char addr[INET6_ADDRSTRLEN];
 292                         print_sockaddr(addr, sizeof(addr), &c->opt_dest_ip);
 293                         *server_name = SMB_STRDUP(addr);
 294                 }
 295         } else if (*server_name) {
 296                 /* resolve the IP address */
 297                 if (!resolve_name(*server_name, server_ss, 0x20, false))  {
 298                         DEBUG(1,("Unable to resolve server name\n"));
 299                         return false;
 300                 }
 301         } else if (flags & NET_FLAGS_PDC) {
 302                 fstring dc_name;
 303                 struct sockaddr_storage pdc_ss;
 304
 305                 if (!get_pdc_ip(d, &pdc_ss)) {
 306                         DEBUG(1,("Unable to resolve PDC server address\n"));
 307                         return false;
 308                 }
 309
 310                 if (is_zero_addr(&pdc_ss)) {
 311                         return false;
 312                 }
 313
 314                 if (!name_status_find(d, 0x1b, 0x20, &pdc_ss, dc_name)) {
 315                         return false;
 316                 }
 317
 318                 *server_name = SMB_STRDUP(dc_name);
 319                 *server_ss = pdc_ss;
 320         } else if (flags & NET_FLAGS_DMB) {
 321                 struct sockaddr_storage msbrow_ss;
 322                 char addr[INET6_ADDRSTRLEN];
 323
 324                 /*  if (!resolve_name(MSBROWSE, &msbrow_ip, 1, false)) */
 325                 if (!resolve_name(d, &msbrow_ss, 0x1B, false))  {
 326                         DEBUG(1,("Unable to resolve domain browser via name lookup\n"));
 327                         return false;
 328                 }
 329                 *server_ss = msbrow_ss;
 330                 print_sockaddr(addr, sizeof(addr), server_ss);
 331                 *server_name = SMB_STRDUP(addr);
 332         } else if (flags & NET_FLAGS_MASTER) {
 333                 struct sockaddr_storage brow_ss;
 334                 char addr[INET6_ADDRSTRLEN];
 335                 if (!resolve_name(d, &brow_ss, 0x1D, false))  {
 336                                 /* go looking for workgroups */
 337                         DEBUG(1,("Unable to resolve master browser via name lookup\n"));
 338                         return false;
 339                 }
 340                 *server_ss = brow_ss;
 341                 print_sockaddr(addr, sizeof(addr), server_ss);
 342                 *server_name = SMB_STRDUP(addr);
 343         } else if (!(flags & NET_FLAGS_LOCALHOST_DEFAULT_INSANE)) {
 344                 if (!interpret_string_addr(server_ss,
 345                                         "127.0.0.1", AI_NUMERICHOST)) {
 346                         DEBUG(1,("Unable to resolve 127.0.0.1\n"));
 347                         return false;
 348                 }
 349                 *server_name = SMB_STRDUP("127.0.0.1");
 350         }
 351
 352         if (!*server_name) {
 353                 DEBUG(1,("no server to connect to\n"));
 354                 return false;
 355         }
 356
 357         return true;
 358 }
 359
 360 bool net_find_pdc(struct sockaddr_storage *server_ss,
 361                 fstring server_name,
 362                 const char *domain_name)
 363 {
 364         if (!get_pdc_ip(domain_name, server_ss)) {
 365                 return false;
 366         }
 367         if (is_zero_addr(server_ss)) {
 368                 return false;
 369         }
 370
 371         if (!name_status_find(domain_name, 0x1b, 0x20, server_ss, server_name)) {
 372                 return false;
 373         }
 374
 375         return true;
 376 }
 377
 378 NTSTATUS net_make_ipc_connection(struct net_context *c, unsigned flags,
 379                                  struct cli_state **pcli)
 380 {
 381         return net_make_ipc_connection_ex(c, c->opt_workgroup, NULL, NULL, flags, pcli);
 382 }
 383
 384 NTSTATUS net_make_ipc_connection_ex(struct net_context *c ,const char *domain,
 385                                     const char *server,
 386                                     const struct sockaddr_storage *pss,
 387                                     unsigned flags, struct cli_state **pcli)
 388 {
 389         char *server_name = NULL;
 390         struct sockaddr_storage server_ss;
 391         struct cli_state *cli = NULL;
 392         NTSTATUS nt_status;
 393
 394         if ( !server || !pss ) {
 395                 if (!net_find_server(c, domain, flags, &server_ss,
 396                                      &server_name)) {
 397                         d_fprintf(stderr, _("Unable to find a suitable server "
 398                                 "for domain %s\n"), domain);
 399                         nt_status = NT_STATUS_UNSUCCESSFUL;
 400                         goto done;
 401                 }
 402         } else {
 403                 server_name = SMB_STRDUP( server );
 404                 server_ss = *pss;
 405         }
 406
 407         if (flags & NET_FLAGS_ANONYMOUS) {
 408                 nt_status = connect_to_ipc_anonymous(c, &cli, &server_ss,
 409                                                      server_name);
 410         } else {
 411                 nt_status = connect_to_ipc(c, &cli, &server_ss,
 412                                            server_name);
 413         }
 414
 415         /* store the server in the affinity cache if it was a PDC */
 416
 417         if ( (flags & NET_FLAGS_PDC) && NT_STATUS_IS_OK(nt_status) )
 418                 saf_store(cli->server_domain, server_name);
 419
 420         SAFE_FREE(server_name);
 421         if (!NT_STATUS_IS_OK(nt_status)) {
 422                 d_fprintf(stderr, _("Connection failed: %s\n"),
 423                           nt_errstr(nt_status));
 424                 cli = NULL;
 425         } else if (c->opt_request_timeout) {
 426                 cli_set_timeout(cli, c->opt_request_timeout * 1000);
 427         }
 428
 429 done:
 430         if (pcli != NULL) {
 431                 *pcli = cli;
 432         }
 433         return nt_status;
 434 }
 435
 436 /****************************************************************************
 437 ****************************************************************************/
 438
 439 int net_run_function(struct net_context *c, int argc, const char **argv,
 440                       const char *whoami, struct functable *table)
 441 {
 442         int i;
 443
 444         if (argc != 0) {
 445                 for (i=0; table[i].funcname != NULL; i++) {
 446                         if (strcasecmp_m(argv[0], table[i].funcname) == 0)
 447                                 return table[i].fn(c, argc-1, argv+1);
 448                 }
 449         }
 450
 451         if (c->display_usage == false) {
 452                 d_fprintf(stderr, _("Invalid command: %s %s\n"), whoami,
 453                           (argc > 0)?argv[0]:"");
 454         }
 455         d_printf(_("Usage:\n"));
 456         for (i=0; table[i].funcname != NULL; i++) {
 457                 if(c->display_usage == false)
 458                         d_printf("%s %-15s %s\n", whoami, table[i].funcname,
 459                                  _(table[i].description));
 460                 else
 461                         d_printf("%s\n", _(table[i].usage));
 462         }
 463
 464         return c->display_usage?0:-1;
 465 }
 466
 467 void net_display_usage_from_functable(struct functable *table)
 468 {
 469         int i;
 470         for (i=0; table[i].funcname != NULL; i++) {
 471                 d_printf("%s\n", _(table[i].usage));
 472         }
 473 }
 474
 475 void net_warn_member_options(void)
 476 {
 477         TALLOC_CTX *frame = talloc_stackframe();
 478         struct loadparm_context *lp_ctx = NULL;
 479
 480         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
 481         if (lp_ctx != NULL) {
 482                 netlogon_creds_cli_warn_options(lp_ctx);
 483         }
 484
 485         TALLOC_FREE(frame);
 486 }
 487
 488 const char *net_share_type_str(int num_type)
 489 {
 490         switch(num_type) {
 491                 case 0: return _("Disk");
 492                 case 1: return _("Print");
 493                 case 2: return _("Dev");
 494                 case 3: return _("IPC");
 495                 default: return _("Unknown");
 496         }
 497 }
 498
 499 static NTSTATUS net_scan_dc_noad(struct net_context *c,
 500                                  struct cli_state *cli,
 501                                  struct net_dc_info *dc_info)
 502 {
 503         TALLOC_CTX *mem_ctx = talloc_tos();
 504         struct rpc_pipe_client *pipe_hnd = NULL;
 505         struct dcerpc_binding_handle *b;
 506         NTSTATUS status, result;
 507         struct policy_handle pol;
 508         union lsa_PolicyInformation *info;
 509
 510         ZERO_STRUCTP(dc_info);
 511         ZERO_STRUCT(pol);
 512
 513         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc,
 514                                           &pipe_hnd);
 515         if (!NT_STATUS_IS_OK(status)) {
 516                 return status;
 517         }
 518
 519         b = pipe_hnd->binding_handle;
 520
 521         status = dcerpc_lsa_open_policy(b, mem_ctx,
 522                                         false,
 523                                         SEC_FLAG_MAXIMUM_ALLOWED,
 524                                         &pol,
 525                                         &result);
 526         if (!NT_STATUS_IS_OK(status)) {
 527                 goto done;
 528         }
 529         if (!NT_STATUS_IS_OK(result)) {
 530                 status = result;
 531                 goto done;
 532         }
 533
 534         status = dcerpc_lsa_QueryInfoPolicy(b, mem_ctx,
 535                                             &pol,
 536                                             LSA_POLICY_INFO_ACCOUNT_DOMAIN,
 537                                             &info,
 538                                             &result);
 539         if (!NT_STATUS_IS_OK(status)) {
 540                 goto done;
 541         }
 542         if (!NT_STATUS_IS_OK(result)) {
 543                 status = result;
 544                 goto done;
 545         }
 546
 547         dc_info->netbios_domain_name = talloc_strdup(mem_ctx, info->account_domain.name.string);
 548         if (dc_info->netbios_domain_name == NULL) {
 549                 status = NT_STATUS_NO_MEMORY;
 550                 goto done;
 551         }
 552
 553  done:
 554         if (is_valid_policy_hnd(&pol)) {
 555                 dcerpc_lsa_Close(b, mem_ctx, &pol, &result);
 556         }
 557
 558         TALLOC_FREE(pipe_hnd);
 559
 560         return status;
 561 }
 562
 563 NTSTATUS net_scan_dc(struct net_context *c,
 564                      struct cli_state *cli,
 565                      struct net_dc_info *dc_info)
 566 {
 567         TALLOC_CTX *mem_ctx = talloc_tos();
 568         struct rpc_pipe_client *dssetup_pipe = NULL;
 569         struct dcerpc_binding_handle *dssetup_handle = NULL;
 570         union dssetup_DsRoleInfo info;
 571         NTSTATUS status;
 572         WERROR werr;
 573
 574         ZERO_STRUCTP(dc_info);
 575
 576         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_dssetup,
 577                                           &dssetup_pipe);
 578         if (!NT_STATUS_IS_OK(status)) {
 579                 DEBUG(10,("net_scan_dc: failed to open dssetup pipe with %s, "
 580                         "retrying with lsa pipe\n", nt_errstr(status)));
 581                 return net_scan_dc_noad(c, cli, dc_info);
 582         }
 583         dssetup_handle = dssetup_pipe->binding_handle;
 584
 585         status = dcerpc_dssetup_DsRoleGetPrimaryDomainInformation(dssetup_handle, mem_ctx,
 586                                                                   DS_ROLE_BASIC_INFORMATION,
 587                                                                   &info,
 588                                                                   &werr);
 589         TALLOC_FREE(dssetup_pipe);
 590
 591         if (NT_STATUS_IS_OK(status)) {
 592                 status = werror_to_ntstatus(werr);
 593         }
 594         if (!NT_STATUS_IS_OK(status)) {
 595                 return status;
 596         }
 597
 598         dc_info->is_dc  = (info.basic.role & (DS_ROLE_PRIMARY_DC|DS_ROLE_BACKUP_DC));
 599         dc_info->is_pdc = (info.basic.role & DS_ROLE_PRIMARY_DC);
 600         dc_info->is_ad  = (info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING);
 601         dc_info->is_mixed_mode = (info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE);
 602         dc_info->netbios_domain_name = talloc_strdup(mem_ctx, info.basic.domain);
 603         dc_info->dns_domain_name = talloc_strdup(mem_ctx, info.basic.dns_domain);
 604         dc_info->forest_name = talloc_strdup(mem_ctx, info.basic.forest);
 605
 606         return NT_STATUS_OK;
 607 }