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(cli_ctx, NULL, server_name,
 120                                         server_ss, c->opt_port,
 121                                         service_name, service_type,
 122                                         c->creds,
 123                                         flags);
 124         if (!NT_STATUS_IS_OK(nt_status)) {
 125                 d_fprintf(stderr, _("Could not connect to server %s\n"),
 126                           server_name);
 127
 128                 /* Display a nicer message depending on the result */
 129
 130                 if (NT_STATUS_V(nt_status) ==
 131                     NT_STATUS_V(NT_STATUS_LOGON_FAILURE))
 132                         d_fprintf(stderr,
 133                                   _("The username or password was not "
 134                                     "correct.\n"));
 135
 136                 if (NT_STATUS_V(nt_status) ==
 137                     NT_STATUS_V(NT_STATUS_ACCOUNT_LOCKED_OUT))
 138                         d_fprintf(stderr, _("The account was locked out.\n"));
 139
 140                 if (NT_STATUS_V(nt_status) ==
 141                     NT_STATUS_V(NT_STATUS_ACCOUNT_DISABLED))
 142                         d_fprintf(stderr, _("The account was disabled.\n"));
 143                 return nt_status;
 144         }
 145
 146         return nt_status;
 147 }
 148
 149 /****************************************************************************
 150  Connect to \\server\ipc$.
 151 ****************************************************************************/
 152
 153 NTSTATUS connect_to_ipc(struct net_context *c,
 154                         struct cli_state **cli_ctx,
 155                         const struct sockaddr_storage *server_ss,
 156                         const char *server_name)
 157 {
 158         return connect_to_service(c, cli_ctx, server_ss, server_name, "IPC$",
 159                                   "IPC");
 160 }
 161
 162 /****************************************************************************
 163  Connect to \\server\ipc$ anonymously.
 164 ****************************************************************************/
 165
 166 NTSTATUS connect_to_ipc_anonymous(struct net_context *c,
 167                                 struct cli_state **cli_ctx,
 168                                 const struct sockaddr_storage *server_ss,
 169                                 const char *server_name)
 170 {
 171         NTSTATUS nt_status;
 172         struct cli_credentials *anon_creds = NULL;
 173
 174         anon_creds = cli_credentials_init_anon(c);
 175         if (anon_creds == NULL) {
 176                 DBG_ERR("cli_credentials_init_anon() failed\n");
 177                 return NT_STATUS_NO_MEMORY;
 178         }
 179
 180         nt_status = cli_full_connection_creds(cli_ctx, c->opt_requester_name,
 181                                         server_name, server_ss, c->opt_port,
 182                                         "IPC$", "IPC",
 183                                         anon_creds,
 184                                         CLI_FULL_CONNECTION_IPC);
 185
 186         if (NT_STATUS_IS_OK(nt_status)) {
 187                 return nt_status;
 188         } else {
 189                 DEBUG(1,("Cannot connect to server (anonymously).  Error was %s\n", nt_errstr(nt_status)));
 190                 return nt_status;
 191         }
 192 }
 193
 194 /**
 195  * Connect a server and open a given pipe
 196  *
 197  * @param cli_dst               A cli_state
 198  * @param pipe                  The pipe to open
 199  * @param got_pipe              boolean that stores if we got a pipe
 200  *
 201  * @return Normal NTSTATUS return.
 202  **/
 203 NTSTATUS connect_dst_pipe(struct net_context *c, struct cli_state **cli_dst,
 204                           struct rpc_pipe_client **pp_pipe_hnd,
 205                           const struct ndr_interface_table *table)
 206 {
 207         NTSTATUS nt_status;
 208         char *server_name = SMB_STRDUP("127.0.0.1");
 209         struct cli_state *cli_tmp = NULL;
 210         struct rpc_pipe_client *pipe_hnd = NULL;
 211
 212         if (server_name == NULL) {
 213                 return NT_STATUS_NO_MEMORY;
 214         }
 215
 216         if (c->opt_destination) {
 217                 SAFE_FREE(server_name);
 218                 if ((server_name = SMB_STRDUP(c->opt_destination)) == NULL) {
 219                         return NT_STATUS_NO_MEMORY;
 220                 }
 221         }
 222
 223         /* make a connection to a named pipe */
 224         nt_status = connect_to_ipc(c, &cli_tmp, NULL, server_name);
 225         if (!NT_STATUS_IS_OK(nt_status)) {
 226                 SAFE_FREE(server_name);
 227                 return nt_status;
 228         }
 229
 230         nt_status = cli_rpc_pipe_open_noauth(cli_tmp, table,
 231                                              &pipe_hnd);
 232         if (!NT_STATUS_IS_OK(nt_status)) {
 233                 DEBUG(0, ("couldn't not initialize pipe\n"));
 234                 cli_shutdown(cli_tmp);
 235                 SAFE_FREE(server_name);
 236                 return nt_status;
 237         }
 238
 239         *cli_dst = cli_tmp;
 240         *pp_pipe_hnd = pipe_hnd;
 241         SAFE_FREE(server_name);
 242
 243         return nt_status;
 244 }
 245
 246 /****************************************************************************
 247  Use the local machine account (krb) and password for this session.
 248 ****************************************************************************/
 249
 250 int net_use_krb_machine_account(struct net_context *c)
 251 {
 252         char *user_name = NULL;
 253
 254         if (!secrets_init()) {
 255                 d_fprintf(stderr,_("ERROR: Unable to open secrets database\n"));
 256                 exit(1);
 257         }
 258
 259         c->opt_password = secrets_fetch_machine_password(
 260                                 c->opt_target_workgroup, NULL, NULL);
 261         if (asprintf(&user_name, "%s$@%s", lp_netbios_name(), lp_realm()) == -1) {
 262                 return -1;
 263         }
 264         c->opt_user_name = user_name;
 265         c->opt_user_specified = true;
 266
 267         cli_credentials_set_machine_account(c->creds, c->lp_ctx);
 268         return 0;
 269 }
 270
 271 bool net_find_server(struct net_context *c,
 272                         const char *domain,
 273                         unsigned flags,
 274                         struct sockaddr_storage *server_ss,
 275                         char **server_name)
 276 {
 277         const char *d = domain ? domain : c->opt_target_workgroup;
 278
 279         if (c->opt_host) {
 280                 *server_name = SMB_STRDUP(c->opt_host);
 281         }
 282
 283         if (c->opt_have_ip) {
 284                 *server_ss = c->opt_dest_ip;
 285                 if (!*server_name) {
 286                         char addr[INET6_ADDRSTRLEN];
 287                         print_sockaddr(addr, sizeof(addr), &c->opt_dest_ip);
 288                         *server_name = SMB_STRDUP(addr);
 289                 }
 290         } else if (*server_name) {
 291                 /* resolve the IP address */
 292                 if (!resolve_name(*server_name, server_ss, 0x20, false))  {
 293                         DEBUG(1,("Unable to resolve server name\n"));
 294                         return false;
 295                 }
 296         } else if (flags & NET_FLAGS_PDC) {
 297                 fstring dc_name;
 298                 struct sockaddr_storage pdc_ss;
 299
 300                 if (!get_pdc_ip(d, &pdc_ss)) {
 301                         DEBUG(1,("Unable to resolve PDC server address\n"));
 302                         return false;
 303                 }
 304
 305                 if (is_zero_addr(&pdc_ss)) {
 306                         return false;
 307                 }
 308
 309                 if (!name_status_find(d, 0x1b, 0x20, &pdc_ss, dc_name)) {
 310                         return false;
 311                 }
 312
 313                 *server_name = SMB_STRDUP(dc_name);
 314                 *server_ss = pdc_ss;
 315         } else if (flags & NET_FLAGS_DMB) {
 316                 struct sockaddr_storage msbrow_ss;
 317                 char addr[INET6_ADDRSTRLEN];
 318
 319                 /*  if (!resolve_name(MSBROWSE, &msbrow_ip, 1, false)) */
 320                 if (!resolve_name(d, &msbrow_ss, 0x1B, false))  {
 321                         DEBUG(1,("Unable to resolve domain browser via name lookup\n"));
 322                         return false;
 323                 }
 324                 *server_ss = msbrow_ss;
 325                 print_sockaddr(addr, sizeof(addr), server_ss);
 326                 *server_name = SMB_STRDUP(addr);
 327         } else if (flags & NET_FLAGS_MASTER) {
 328                 struct sockaddr_storage brow_ss;
 329                 char addr[INET6_ADDRSTRLEN];
 330                 if (!resolve_name(d, &brow_ss, 0x1D, false))  {
 331                                 /* go looking for workgroups */
 332                         DEBUG(1,("Unable to resolve master browser via name lookup\n"));
 333                         return false;
 334                 }
 335                 *server_ss = brow_ss;
 336                 print_sockaddr(addr, sizeof(addr), server_ss);
 337                 *server_name = SMB_STRDUP(addr);
 338         } else if (!(flags & NET_FLAGS_LOCALHOST_DEFAULT_INSANE)) {
 339                 if (!interpret_string_addr(server_ss,
 340                                         "127.0.0.1", AI_NUMERICHOST)) {
 341                         DEBUG(1,("Unable to resolve 127.0.0.1\n"));
 342                         return false;
 343                 }
 344                 *server_name = SMB_STRDUP("127.0.0.1");
 345         }
 346
 347         if (!*server_name) {
 348                 DEBUG(1,("no server to connect to\n"));
 349                 return false;
 350         }
 351
 352         return true;
 353 }
 354
 355 bool net_find_pdc(struct sockaddr_storage *server_ss,
 356                 fstring server_name,
 357                 const char *domain_name)
 358 {
 359         if (!get_pdc_ip(domain_name, server_ss)) {
 360                 return false;
 361         }
 362         if (is_zero_addr(server_ss)) {
 363                 return false;
 364         }
 365
 366         if (!name_status_find(domain_name, 0x1b, 0x20, server_ss, server_name)) {
 367                 return false;
 368         }
 369
 370         return true;
 371 }
 372
 373 NTSTATUS net_make_ipc_connection(struct net_context *c, unsigned flags,
 374                                  struct cli_state **pcli)
 375 {
 376         return net_make_ipc_connection_ex(c, c->opt_workgroup, NULL, NULL, flags, pcli);
 377 }
 378
 379 NTSTATUS net_make_ipc_connection_ex(struct net_context *c ,const char *domain,
 380                                     const char *server,
 381                                     const struct sockaddr_storage *pss,
 382                                     unsigned flags, struct cli_state **pcli)
 383 {
 384         char *server_name = NULL;
 385         struct sockaddr_storage server_ss;
 386         struct cli_state *cli = NULL;
 387         NTSTATUS nt_status;
 388
 389         if ( !server || !pss ) {
 390                 if (!net_find_server(c, domain, flags, &server_ss,
 391                                      &server_name)) {
 392                         d_fprintf(stderr, _("Unable to find a suitable server "
 393                                 "for domain %s\n"), domain);
 394                         nt_status = NT_STATUS_UNSUCCESSFUL;
 395                         goto done;
 396                 }
 397         } else {
 398                 server_name = SMB_STRDUP( server );
 399                 server_ss = *pss;
 400         }
 401
 402         if (flags & NET_FLAGS_ANONYMOUS) {
 403                 nt_status = connect_to_ipc_anonymous(c, &cli, &server_ss,
 404                                                      server_name);
 405         } else {
 406                 nt_status = connect_to_ipc(c, &cli, &server_ss,
 407                                            server_name);
 408         }
 409
 410         /* store the server in the affinity cache if it was a PDC */
 411
 412         if ( (flags & NET_FLAGS_PDC) && NT_STATUS_IS_OK(nt_status) )
 413                 saf_store(cli->server_domain, server_name);
 414
 415         SAFE_FREE(server_name);
 416         if (!NT_STATUS_IS_OK(nt_status)) {
 417                 d_fprintf(stderr, _("Connection failed: %s\n"),
 418                           nt_errstr(nt_status));
 419                 cli = NULL;
 420         } else if (c->opt_request_timeout) {
 421                 cli_set_timeout(cli, c->opt_request_timeout * 1000);
 422         }
 423
 424 done:
 425         if (pcli != NULL) {
 426                 *pcli = cli;
 427         }
 428         return nt_status;
 429 }
 430
 431 /****************************************************************************
 432 ****************************************************************************/
 433
 434 /* TODO FIXME: Pass cli_creds via net_context and get rid of this function. */
 435 const char *net_prompt_pass(struct net_context *c, const char *user)
 436 {
 437         struct cli_credentials *creds = samba_cmdline_get_creds();
 438
 439         if (c->opt_password == NULL) {
 440                 c->opt_password = cli_credentials_get_password(creds);
 441         }
 442
 443         return c->opt_password;
 444 }
 445
 446 int net_run_function(struct net_context *c, int argc, const char **argv,
 447                       const char *whoami, struct functable *table)
 448 {
 449         int i;
 450
 451         if (argc != 0) {
 452                 for (i=0; table[i].funcname != NULL; i++) {
 453                         if (strcasecmp_m(argv[0], table[i].funcname) == 0)
 454                                 return table[i].fn(c, argc-1, argv+1);
 455                 }
 456         }
 457
 458         if (c->display_usage == false) {
 459                 d_fprintf(stderr, _("Invalid command: %s %s\n"), whoami,
 460                           (argc > 0)?argv[0]:"");
 461         }
 462         d_printf(_("Usage:\n"));
 463         for (i=0; table[i].funcname != NULL; i++) {
 464                 if(c->display_usage == false)
 465                         d_printf("%s %-15s %s\n", whoami, table[i].funcname,
 466                                  _(table[i].description));
 467                 else
 468                         d_printf("%s\n", _(table[i].usage));
 469         }
 470
 471         return c->display_usage?0:-1;
 472 }
 473
 474 void net_display_usage_from_functable(struct functable *table)
 475 {
 476         int i;
 477         for (i=0; table[i].funcname != NULL; i++) {
 478                 d_printf("%s\n", _(table[i].usage));
 479         }
 480 }
 481
 482 void net_warn_member_options(void)
 483 {
 484         TALLOC_CTX *frame = talloc_stackframe();
 485         struct loadparm_context *lp_ctx = NULL;
 486
 487         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
 488         if (lp_ctx != NULL) {
 489                 netlogon_creds_cli_warn_options(lp_ctx);
 490         }
 491
 492         TALLOC_FREE(frame);
 493 }
 494
 495 const char *net_share_type_str(int num_type)
 496 {
 497         switch(num_type) {
 498                 case 0: return _("Disk");
 499                 case 1: return _("Print");
 500                 case 2: return _("Dev");
 501                 case 3: return _("IPC");
 502                 default: return _("Unknown");
 503         }
 504 }
 505
 506 static NTSTATUS net_scan_dc_noad(struct net_context *c,
 507                                  struct cli_state *cli,
 508                                  struct net_dc_info *dc_info)
 509 {
 510         TALLOC_CTX *mem_ctx = talloc_tos();
 511         struct rpc_pipe_client *pipe_hnd = NULL;
 512         struct dcerpc_binding_handle *b;
 513         NTSTATUS status, result;
 514         struct policy_handle pol;
 515         union lsa_PolicyInformation *info;
 516
 517         ZERO_STRUCTP(dc_info);
 518         ZERO_STRUCT(pol);
 519
 520         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc,
 521                                           &pipe_hnd);
 522         if (!NT_STATUS_IS_OK(status)) {
 523                 return status;
 524         }
 525
 526         b = pipe_hnd->binding_handle;
 527
 528         status = dcerpc_lsa_open_policy(b, mem_ctx,
 529                                         false,
 530                                         SEC_FLAG_MAXIMUM_ALLOWED,
 531                                         &pol,
 532                                         &result);
 533         if (!NT_STATUS_IS_OK(status)) {
 534                 goto done;
 535         }
 536         if (!NT_STATUS_IS_OK(result)) {
 537                 status = result;
 538                 goto done;
 539         }
 540
 541         status = dcerpc_lsa_QueryInfoPolicy(b, mem_ctx,
 542                                             &pol,
 543                                             LSA_POLICY_INFO_ACCOUNT_DOMAIN,
 544                                             &info,
 545                                             &result);
 546         if (!NT_STATUS_IS_OK(status)) {
 547                 goto done;
 548         }
 549         if (!NT_STATUS_IS_OK(result)) {
 550                 status = result;
 551                 goto done;
 552         }
 553
 554         dc_info->netbios_domain_name = talloc_strdup(mem_ctx, info->account_domain.name.string);
 555         if (dc_info->netbios_domain_name == NULL) {
 556                 status = NT_STATUS_NO_MEMORY;
 557                 goto done;
 558         }
 559
 560  done:
 561         if (is_valid_policy_hnd(&pol)) {
 562                 dcerpc_lsa_Close(b, mem_ctx, &pol, &result);
 563         }
 564
 565         TALLOC_FREE(pipe_hnd);
 566
 567         return status;
 568 }
 569
 570 NTSTATUS net_scan_dc(struct net_context *c,
 571                      struct cli_state *cli,
 572                      struct net_dc_info *dc_info)
 573 {
 574         TALLOC_CTX *mem_ctx = talloc_tos();
 575         struct rpc_pipe_client *dssetup_pipe = NULL;
 576         struct dcerpc_binding_handle *dssetup_handle = NULL;
 577         union dssetup_DsRoleInfo info;
 578         NTSTATUS status;
 579         WERROR werr;
 580
 581         ZERO_STRUCTP(dc_info);
 582
 583         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_dssetup,
 584                                           &dssetup_pipe);
 585         if (!NT_STATUS_IS_OK(status)) {
 586                 DEBUG(10,("net_scan_dc: failed to open dssetup pipe with %s, "
 587                         "retrying with lsa pipe\n", nt_errstr(status)));
 588                 return net_scan_dc_noad(c, cli, dc_info);
 589         }
 590         dssetup_handle = dssetup_pipe->binding_handle;
 591
 592         status = dcerpc_dssetup_DsRoleGetPrimaryDomainInformation(dssetup_handle, mem_ctx,
 593                                                                   DS_ROLE_BASIC_INFORMATION,
 594                                                                   &info,
 595                                                                   &werr);
 596         TALLOC_FREE(dssetup_pipe);
 597
 598         if (NT_STATUS_IS_OK(status)) {
 599                 status = werror_to_ntstatus(werr);
 600         }
 601         if (!NT_STATUS_IS_OK(status)) {
 602                 return status;
 603         }
 604
 605         dc_info->is_dc  = (info.basic.role & (DS_ROLE_PRIMARY_DC|DS_ROLE_BACKUP_DC));
 606         dc_info->is_pdc = (info.basic.role & DS_ROLE_PRIMARY_DC);
 607         dc_info->is_ad  = (info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING);
 608         dc_info->is_mixed_mode = (info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE);
 609         dc_info->netbios_domain_name = talloc_strdup(mem_ctx, info.basic.domain);
 610         dc_info->dns_domain_name = talloc_strdup(mem_ctx, info.basic.dns_domain);
 611         dc_info->forest_name = talloc_strdup(mem_ctx, info.basic.forest);
 612
 613         return NT_STATUS_OK;
 614 }