source3/libnet/libnet_join.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  libnet Join Support
   4  *  Copyright (C) Gerald (Jerry) Carter 2006
   5  *  Copyright (C) Guenther Deschner 2007
   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 #include "includes.h"
  22 #include "libnet/libnet_join.h"
  23 #include "libnet/libnet_proto.h"
  24
  25 static NTSTATUS do_DomainJoin(TALLOC_CTX *mem_ctx,
  26                               struct libnet_JoinCtx *r)
  27 {
  28         struct cli_state *cli = NULL;
  29         struct rpc_pipe_client *pipe_hnd = NULL;
  30         const char *password = NULL;
  31         POLICY_HND sam_pol, domain_pol, user_pol, lsa_pol;
  32         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
  33         char *acct_name;
  34         const char *const_acct_name;
  35         uint32 user_rid;
  36         uint32 num_rids, *name_types, *user_rids;
  37         uint32 flags = 0x3e8;
  38         uint32 acb_info = ACB_WSTRUST;
  39         uint32 fields_present;
  40         uchar pwbuf[532];
  41         SAM_USERINFO_CTR ctr;
  42         SAM_USER_INFO_25 p25;
  43         const int infolevel = 25;
  44         struct MD5Context md5ctx;
  45         uchar md5buffer[16];
  46         DATA_BLOB digested_session_key;
  47         uchar md4_trust_password[16];
  48
  49         password = talloc_strdup(mem_ctx,
  50                 generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH));
  51         NT_STATUS_HAVE_NO_MEMORY(password);
  52
  53         status = cli_full_connection(&cli, NULL, r->in.server_name,
  54                                      NULL, 0,
  55                                      "IPC$", "IPC",
  56                                      r->in.admin_account,
  57                                      NULL, //r->in.domain_name,
  58                                      r->in.password,
  59                                      0, Undefined, NULL);
  60
  61         if (!NT_STATUS_IS_OK(status)) {
  62                 goto done;
  63         }
  64
  65         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &status);
  66         if (!pipe_hnd) {
  67                 goto done;
  68         }
  69
  70         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
  71                                         SEC_RIGHTS_MAXIMUM_ALLOWED, &lsa_pol);
  72         if (!NT_STATUS_IS_OK(status)) {
  73                 goto done;
  74         }
  75
  76         status = rpccli_lsa_query_info_policy2(pipe_hnd, mem_ctx, &lsa_pol,
  77                                                12,
  78                                                &r->out.netbios_domain_name,
  79                                                &r->out.dns_domain_name,
  80                                                NULL,
  81                                                NULL,
  82                                                &r->out.domain_sid);
  83
  84         if (!NT_STATUS_IS_OK(status)) {
  85                 status = rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
  86                                                       5,
  87                                                       &r->out.netbios_domain_name,
  88                                                       &r->out.domain_sid);
  89                 if (!NT_STATUS_IS_OK(status)) {
  90                         goto done;
  91                 }
  92         }
  93
  94         rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
  95         cli_rpc_pipe_close(pipe_hnd);
  96
  97         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
  98         if (!pipe_hnd) {
  99                 goto done;
 100         }
 101
 102         status = rpccli_samr_connect(pipe_hnd, mem_ctx,
 103                                      SEC_RIGHTS_MAXIMUM_ALLOWED, &sam_pol);
 104         if (!NT_STATUS_IS_OK(status)) {
 105                 goto done;
 106         }
 107
 108         status = rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
 109                                          SEC_RIGHTS_MAXIMUM_ALLOWED,
 110                                          r->out.domain_sid,
 111                                          &domain_pol);
 112         if (!NT_STATUS_IS_OK(status)) {
 113                 goto done;
 114         }
 115
 116         acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
 117         strlower_m(acct_name);
 118         const_acct_name = acct_name;
 119
 120         status = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
 121                                              acct_name, ACB_WSTRUST,
 122                                              0xe005000b, &user_pol, &user_rid);
 123         if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 124                 if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_DOMAIN_JOIN_IF_JOINED)) {
 125                         goto done;
 126                 }
 127         }
 128
 129         if (NT_STATUS_IS_OK(status)) {
 130                 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 131         }
 132
 133         status = rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
 134                                           &domain_pol, flags, 1,
 135                                           &const_acct_name,
 136                                           &num_rids, &user_rids, &name_types);
 137         if (!NT_STATUS_IS_OK(status)) {
 138                 goto done;
 139         }
 140
 141         if (name_types[0] != SID_NAME_USER) {
 142                 status = NT_STATUS_INVALID_WORKSTATION;
 143                 goto done;
 144         }
 145
 146         user_rid = user_rids[0];
 147
 148         status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
 149                                        SEC_RIGHTS_MAXIMUM_ALLOWED, user_rid,
 150                                        &user_pol);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 goto done;
 153         }
 154
 155         E_md4hash(r->in.password, md4_trust_password);
 156         encode_pw_buffer(pwbuf, r->in.password, STR_UNICODE);
 157
 158         generate_random_buffer((uint8*)md5buffer, sizeof(md5buffer));
 159         digested_session_key = data_blob_talloc(mem_ctx, 0, 16);
 160
 161         MD5Init(&md5ctx);
 162         MD5Update(&md5ctx, md5buffer, sizeof(md5buffer));
 163         MD5Update(&md5ctx, cli->user_session_key.data, cli->user_session_key.length);
 164         MD5Final(digested_session_key.data, &md5ctx);
 165
 166         SamOEMhashBlob(pwbuf, sizeof(pwbuf), &digested_session_key);
 167         memcpy(&pwbuf[516], md5buffer, sizeof(md5buffer));
 168
 169         acb_info |= ACB_PWNOEXP;
 170 #if 0
 171         if ( dom_type == ND_TYPE_AD ) {
 172 #if !defined(ENCTYPE_ARCFOUR_HMAC)
 173                 acb_info |= ACB_USE_DES_KEY_ONLY;
 174 #endif
 175                 ;;
 176         }
 177 #endif
 178         ZERO_STRUCT(ctr);
 179         ZERO_STRUCT(p25);
 180
 181         fields_present = ACCT_NT_PWD_SET | ACCT_LM_PWD_SET | ACCT_FLAGS;
 182         init_sam_user_info25P(&p25, fields_present, acb_info, (char *)pwbuf);
 183
 184         ctr.switch_value = infolevel;
 185         ctr.info.id25    = &p25;
 186
 187         status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol,
 188                                            infolevel, &cli->user_session_key,
 189                                            &ctr);
 190         if (!NT_STATUS_IS_OK(status)) {
 191                 goto done;
 192         }
 193
 194         rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 195         cli_rpc_pipe_close(pipe_hnd);
 196
 197         if (!secrets_store_domain_sid(r->out.netbios_domain_name,
 198                                       r->out.domain_sid))
 199         {
 200                 status = NT_STATUS_INTERNAL_DB_ERROR;
 201                 goto done;
 202         }
 203
 204         if (!secrets_store_machine_password(password,
 205                                             r->out.netbios_domain_name,
 206                                             SEC_CHAN_WKSTA))
 207         {
 208                 status = NT_STATUS_INTERNAL_DB_ERROR;
 209                 goto done;
 210         }
 211
 212         status = NT_STATUS_OK;
 213  done:
 214         if (cli) {
 215                 cli_shutdown(cli);
 216         }
 217
 218         return status;
 219 }
 220
 221 static NTSTATUS do_DomainUnjoin(TALLOC_CTX *mem_ctx,
 222                                 struct libnet_UnjoinCtx *r)
 223 {
 224         struct cli_state *cli = NULL;
 225         struct rpc_pipe_client *pipe_hnd = NULL;
 226         POLICY_HND sam_pol, domain_pol, user_pol;
 227         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 228         char *acct_name;
 229         uint32 flags = 0x3e8;
 230         const char *const_acct_name;
 231         uint32 user_rid;
 232         uint32 num_rids, *name_types, *user_rids;
 233         SAM_USERINFO_CTR ctr, *qctr = NULL;
 234         SAM_USER_INFO_16 p16;
 235
 236         status = cli_full_connection(&cli, NULL, r->in.server_name,
 237                                      NULL, 0,
 238                                      "IPC$", "IPC",
 239                                      r->in.admin_account,
 240                                      NULL, //r->in.domain_name,
 241                                      r->in.password,
 242                                      0, Undefined, NULL);
 243
 244         if (!NT_STATUS_IS_OK(status)) {
 245                 goto done;
 246         }
 247
 248         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
 249         if (!pipe_hnd) {
 250                 goto done;
 251         }
 252
 253         status = rpccli_samr_connect(pipe_hnd, mem_ctx,
 254                                      SEC_RIGHTS_MAXIMUM_ALLOWED, &sam_pol);
 255         if (!NT_STATUS_IS_OK(status)) {
 256                 goto done;
 257         }
 258
 259         status = rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
 260                                          SEC_RIGHTS_MAXIMUM_ALLOWED,
 261                                          r->in.domain_sid,
 262                                          &domain_pol);
 263         if (!NT_STATUS_IS_OK(status)) {
 264                 goto done;
 265         }
 266
 267         acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
 268         strlower_m(acct_name);
 269         const_acct_name = acct_name;
 270
 271         status = rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
 272                                           &domain_pol, flags, 1,
 273                                           &const_acct_name,
 274                                           &num_rids, &user_rids, &name_types);
 275         if (!NT_STATUS_IS_OK(status)) {
 276                 goto done;
 277         }
 278
 279         if (name_types[0] != SID_NAME_USER) {
 280                 status = NT_STATUS_INVALID_WORKSTATION;
 281                 goto done;
 282         }
 283
 284         user_rid = user_rids[0];
 285
 286         status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
 287                                        SEC_RIGHTS_MAXIMUM_ALLOWED,
 288                                        user_rid, &user_pol);
 289         if (!NT_STATUS_IS_OK(status)) {
 290                 goto done;
 291         }
 292
 293         status = rpccli_samr_query_userinfo(pipe_hnd, mem_ctx,
 294                                             &user_pol, 16, &qctr);
 295         if (!NT_STATUS_IS_OK(status)) {
 296                 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 297                 goto done;
 298         }
 299
 300         ZERO_STRUCT(ctr);
 301         ctr.switch_value = 16;
 302         ctr.info.id16 = &p16;
 303
 304         p16.acb_info = qctr->info.id16->acb_info | ACB_DISABLED;
 305
 306         status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
 307                                            &cli->user_session_key, &ctr);
 308
 309         rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 310
 311         if (!secrets_delete_machine_password_ex(lp_workgroup())) {
 312                 status = NT_STATUS_INTERNAL_DB_ERROR;
 313                 goto done;
 314         }
 315
 316         if (!secrets_delete_domain_sid(lp_workgroup())) {
 317                 status = NT_STATUS_INTERNAL_DB_ERROR;
 318                 goto done;
 319         }
 320
 321 done:
 322         rpccli_samr_close(pipe_hnd, mem_ctx, &domain_pol);
 323         rpccli_samr_close(pipe_hnd, mem_ctx, &sam_pol);
 324
 325         cli_rpc_pipe_close(pipe_hnd);
 326
 327         if (cli) {
 328                 cli_shutdown(cli);
 329         }
 330
 331         return status;
 332 }
 333
 334 static WERROR do_join_modify_vals_config(TALLOC_CTX *mem_ctx,
 335                                          struct libnet_JoinCtx *r)
 336 {
 337         WERROR werr;
 338         bool is_ad = false;
 339
 340         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
 341
 342                 werr = libnet_smbconf_set_global_param("security", "user");
 343                 W_ERROR_NOT_OK_RETURN(werr);
 344
 345                 werr = libnet_smbconf_set_global_param("workgroup",
 346                                                        r->in.domain_name);
 347                 return werr;
 348         }
 349
 350         if (r->out.dns_domain_name) {
 351                 is_ad = true;
 352         }
 353
 354         werr = libnet_smbconf_set_global_param("security", "domain");
 355         W_ERROR_NOT_OK_RETURN(werr);
 356
 357         werr = libnet_smbconf_set_global_param("workgroup",
 358                                                r->out.netbios_domain_name);
 359         W_ERROR_NOT_OK_RETURN(werr);
 360
 361         if (is_ad) {
 362                 werr = libnet_smbconf_set_global_param("security", "ads");
 363                 W_ERROR_NOT_OK_RETURN(werr);
 364
 365                 werr = libnet_smbconf_set_global_param("realm",
 366                                                        r->out.dns_domain_name);
 367                 W_ERROR_NOT_OK_RETURN(werr);
 368         }
 369
 370         return werr;
 371 }
 372
 373 static WERROR do_unjoin_modify_vals_config(struct libnet_UnjoinCtx *r)
 374 {
 375         WERROR werr = WERR_OK;
 376
 377         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
 378
 379                 werr = libnet_smbconf_set_global_param("security", "user");
 380                 W_ERROR_NOT_OK_RETURN(werr);
 381         }
 382
 383         werr = libnet_smbconf_delparm("GLOBAL", "realm");
 384
 385         return werr;
 386 }
 387
 388
 389 static WERROR do_JoinConfig(TALLOC_CTX *mem_ctx,
 390                             struct libnet_JoinCtx *r)
 391 {
 392         WERROR werr;
 393
 394         if (!W_ERROR_IS_OK(r->out.result)) {
 395                 return r->out.result;
 396         }
 397
 398         if (!r->in.modify_config) {
 399                 return WERR_OK;
 400         }
 401
 402         werr = do_join_modify_vals_config(mem_ctx, r);
 403         if (!W_ERROR_IS_OK(werr)) {
 404                 return werr;
 405         }
 406
 407         r->out.modified_config = true;
 408         r->out.result = werr;
 409
 410         return werr;
 411 }
 412
 413 static WERROR do_UnjoinConfig(struct libnet_UnjoinCtx *r)
 414 {
 415         WERROR werr;
 416
 417         if (!W_ERROR_IS_OK(r->out.result)) {
 418                 return r->out.result;
 419         }
 420
 421         if (!r->in.modify_config) {
 422                 return WERR_OK;
 423         }
 424
 425         werr = do_unjoin_modify_vals_config(r);
 426         if (!W_ERROR_IS_OK(werr)) {
 427                 return werr;
 428         }
 429
 430         r->out.modified_config = true;
 431         r->out.result = werr;
 432
 433         return werr;
 434 }
 435
 436 WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
 437                            struct libnet_JoinCtx **r)
 438 {
 439         struct libnet_JoinCtx *ctx;
 440
 441         ctx = talloc_zero(mem_ctx, struct libnet_JoinCtx);
 442         if (!ctx) {
 443                 return WERR_NOMEM;
 444         }
 445
 446         *r = ctx;
 447
 448         return WERR_OK;
 449 }
 450
 451 WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
 452                              struct libnet_UnjoinCtx **r)
 453 {
 454         struct libnet_UnjoinCtx *ctx;
 455
 456         ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
 457         if (!ctx) {
 458                 return WERR_NOMEM;
 459         }
 460
 461         *r = ctx;
 462
 463         return WERR_OK;
 464 }
 465
 466 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
 467                    struct libnet_JoinCtx *r)
 468 {
 469         WERROR werr;
 470         NTSTATUS status;
 471
 472         if (!r->in.domain_name) {
 473                 return WERR_INVALID_PARAM;
 474         }
 475
 476         if (r->in.modify_config && !lp_include_registry_globals()) {
 477                 return WERR_NOT_SUPPORTED;
 478         }
 479
 480         if (IS_DC) {
 481                 return WERR_SETUP_DOMAIN_CONTROLLER;
 482         }
 483
 484         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
 485
 486                 status = do_DomainJoin(mem_ctx, r);
 487                 if (!NT_STATUS_IS_OK(status)) {
 488                         if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 489                                 return WERR_SETUP_ALREADY_JOINED;
 490                         }
 491                         return ntstatus_to_werror(status);
 492                 }
 493         }
 494
 495         werr = do_JoinConfig(mem_ctx, r);
 496         if (!W_ERROR_IS_OK(werr)) {
 497                 return werr;
 498         }
 499
 500         return werr;
 501 }
 502
 503 WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
 504                      struct libnet_UnjoinCtx *r)
 505 {
 506         WERROR werr;
 507         NTSTATUS status;
 508
 509         if (r->in.modify_config && !lp_include_registry_globals()) {
 510                 return WERR_NOT_SUPPORTED;
 511         }
 512
 513         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
 514
 515                 status = do_DomainUnjoin(mem_ctx, r);
 516                 if (!NT_STATUS_IS_OK(status)) {
 517                         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
 518                                 return WERR_SETUP_NOT_JOINED;
 519                         }
 520                         return ntstatus_to_werror(status);
 521                 }
 522         }
 523
 524         werr = do_UnjoinConfig(r);
 525         if (!W_ERROR_IS_OK(werr)) {
 526                 return werr;
 527         }
 528
 529         return werr;
 530 }