source4/libnet/libnet_join.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher      2004
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   6    Copyright (C) Brad Henry 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "libnet/libnet.h"
  24 #include "librpc/gen_ndr/ndr_drsuapi_c.h"
  25 #include <ldb.h>
  26 #include <ldb_errors.h>
  27 #include "dsdb/samdb/samdb.h"
  28 #include "ldb_wrap.h"
  29 #include "libcli/security/security.h"
  30 #include "auth/credentials/credentials.h"
  31 #include "auth/credentials/credentials_krb5.h"
  32 #include "librpc/gen_ndr/ndr_samr_c.h"
  33 #include "param/param.h"
  34 #include "param/provision.h"
  35 #include "system/kerberos.h"
  36 #include "auth/kerberos/kerberos.h"
  37
  38 /*
  39  * complete a domain join, when joining to a AD domain:
  40  * 1.) connect and bind to the DRSUAPI pipe
  41  * 2.) do a DsCrackNames() to find the machine account dn
  42  * 3.) connect to LDAP
  43  * 4.) do an ldap search to find the "msDS-KeyVersionNumber" of the machine account
  44  * 5.) set the servicePrincipalName's of the machine account via LDAP, (maybe we should use DsWriteAccountSpn()...)
  45  * 6.) do a DsCrackNames() to find the domain dn
  46  * 7.) find out Site specific stuff, look at libnet_JoinSite() for details
  47  */
  48 static NTSTATUS libnet_JoinADSDomain(struct libnet_context *ctx, struct libnet_JoinDomain *r)
  49 {
  50         NTSTATUS status;
  51
  52         TALLOC_CTX *tmp_ctx;
  53
  54         const char *realm = r->out.realm;
  55
  56         const struct dcerpc_binding *samr_binding = r->out.samr_binding;
  57
  58         struct dcerpc_pipe *drsuapi_pipe;
  59         struct dcerpc_binding *drsuapi_binding;
  60         enum dcerpc_transport_t transport;
  61         struct drsuapi_DsBind r_drsuapi_bind;
  62         struct drsuapi_DsCrackNames r_crack_names;
  63         struct drsuapi_DsNameString names[1];
  64         struct policy_handle drsuapi_bind_handle;
  65         struct GUID drsuapi_bind_guid;
  66
  67         struct ldb_context *remote_ldb;
  68         struct ldb_dn *account_dn;
  69         const char *account_dn_str;
  70         const char *remote_ldb_url;
  71         struct ldb_result *res;
  72         struct ldb_message *msg;
  73
  74         int ret, rtn;
  75
  76         const char * const attrs[] = {
  77                 "msDS-KeyVersionNumber",
  78                 "servicePrincipalName",
  79                 "dNSHostName",
  80                 "objectGUID",
  81                 NULL,
  82         };
  83
  84         r->out.error_string = NULL;
  85
  86         /* We need to convert between a samAccountName and domain to a
  87          * DN in the directory.  The correct way to do this is with
  88          * DRSUAPI CrackNames */
  89
  90         /* Fiddle with the bindings, so get to DRSUAPI on
  91          * NCACN_IP_TCP, sealed */
  92         tmp_ctx = talloc_named(r, 0, "libnet_JoinADSDomain temp context");
  93         if (!tmp_ctx) {
  94                 r->out.error_string = NULL;
  95                 return NT_STATUS_NO_MEMORY;
  96         }
  97
  98         drsuapi_binding = dcerpc_binding_dup(tmp_ctx, samr_binding);
  99         if (!drsuapi_binding) {
 100                 r->out.error_string = NULL;
 101                 talloc_free(tmp_ctx);
 102                 return NT_STATUS_NO_MEMORY;
 103         }
 104
 105         transport = dcerpc_binding_get_transport(drsuapi_binding);
 106
 107         /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
 108         if (transport != NCALRPC) {
 109                 status = dcerpc_binding_set_transport(drsuapi_binding, NCACN_IP_TCP);
 110                 if (!NT_STATUS_IS_OK(status)) {
 111                         r->out.error_string = talloc_asprintf(r,
 112                                                 "dcerpc_binding_set_transport failed: %s",
 113                                                 nt_errstr(status));
 114                         talloc_free(tmp_ctx);
 115                         return status;
 116                 }
 117         }
 118
 119         status = dcerpc_binding_set_string_option(drsuapi_binding, "endpoint", NULL);
 120         if (!NT_STATUS_IS_OK(status)) {
 121                 r->out.error_string = talloc_asprintf(r,
 122                                         "dcerpc_binding_set_string_option failed: %s",
 123                                         nt_errstr(status));
 124                 talloc_free(tmp_ctx);
 125                 return status;
 126         }
 127
 128         status = dcerpc_binding_set_flags(drsuapi_binding, DCERPC_SEAL, 0);
 129         if (!NT_STATUS_IS_OK(status)) {
 130                 r->out.error_string = talloc_asprintf(r,
 131                                         "dcerpc_binding_set_flags failed: %s",
 132                                         nt_errstr(status));
 133                 talloc_free(tmp_ctx);
 134                 return status;
 135         }
 136
 137         status = dcerpc_pipe_connect_b(tmp_ctx,
 138                                        &drsuapi_pipe,
 139                                        drsuapi_binding,
 140                                        &ndr_table_drsuapi,
 141                                        ctx->cred,
 142                                        ctx->event_ctx,
 143                                        ctx->lp_ctx);
 144         if (!NT_STATUS_IS_OK(status)) {
 145                 r->out.error_string = talloc_asprintf(r,
 146                                         "Connection to DRSUAPI pipe of PDC of domain '%s' failed: %s",
 147                                         r->out.domain_name,
 148                                         nt_errstr(status));
 149                 talloc_free(tmp_ctx);
 150                 return status;
 151         }
 152
 153         /* get a DRSUAPI pipe handle */
 154         GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
 155
 156         r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
 157         r_drsuapi_bind.in.bind_info = NULL;
 158         r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
 159
 160         status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
 161         if (!NT_STATUS_IS_OK(status)) {
 162                 r->out.error_string
 163                         = talloc_asprintf(r,
 164                                           "dcerpc_drsuapi_DsBind failed - %s",
 165                                           nt_errstr(status));
 166                 talloc_free(tmp_ctx);
 167                 return status;
 168         } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
 169                 r->out.error_string
 170                                 = talloc_asprintf(r,
 171                                                   "DsBind failed - %s",
 172                                                   win_errstr(r_drsuapi_bind.out.result));
 173                         talloc_free(tmp_ctx);
 174                 return NT_STATUS_UNSUCCESSFUL;
 175         }
 176
 177         /* Actually 'crack' the names */
 178         ZERO_STRUCT(r_crack_names);
 179         r_crack_names.in.bind_handle            = &drsuapi_bind_handle;
 180         r_crack_names.in.level                  = 1;
 181         r_crack_names.in.req                    = talloc(r, union drsuapi_DsNameRequest);
 182         if (!r_crack_names.in.req) {
 183                 r->out.error_string = NULL;
 184                 talloc_free(tmp_ctx);
 185                 return NT_STATUS_NO_MEMORY;
 186         }
 187         r_crack_names.in.req->req1.codepage     = 1252; /* western european */
 188         r_crack_names.in.req->req1.language     = 0x00000407; /* german */
 189         r_crack_names.in.req->req1.count        = 1;
 190         r_crack_names.in.req->req1.names        = names;
 191         r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
 192         r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
 193         r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 194         names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
 195         if (!names[0].str) {
 196                 r->out.error_string = NULL;
 197                 talloc_free(tmp_ctx);
 198                 return NT_STATUS_NO_MEMORY;
 199         }
 200
 201         r_crack_names.out.ctr                   = talloc(r, union drsuapi_DsNameCtr);
 202         r_crack_names.out.level_out             = talloc(r, uint32_t);
 203         if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
 204                 r->out.error_string = NULL;
 205                 talloc_free(tmp_ctx);
 206                 return NT_STATUS_NO_MEMORY;
 207         }
 208
 209         status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
 210         if (!NT_STATUS_IS_OK(status)) {
 211                 r->out.error_string
 212                         = talloc_asprintf(r,
 213                                           "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
 214                                           names[0].str,
 215                                           nt_errstr(status));
 216                 talloc_free(tmp_ctx);
 217                 return status;
 218         } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
 219                 r->out.error_string
 220                                 = talloc_asprintf(r,
 221                                                   "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
 222                 talloc_free(tmp_ctx);
 223                 return NT_STATUS_UNSUCCESSFUL;
 224         } else if (*r_crack_names.out.level_out != 1
 225                    || !r_crack_names.out.ctr->ctr1
 226                    || r_crack_names.out.ctr->ctr1->count != 1) {
 227                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
 228                 talloc_free(tmp_ctx);
 229                 return NT_STATUS_INVALID_PARAMETER;
 230         } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 231                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
 232                 talloc_free(tmp_ctx);
 233                 return NT_STATUS_UNSUCCESSFUL;
 234         } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
 235                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
 236                 talloc_free(tmp_ctx);
 237                 return NT_STATUS_INVALID_PARAMETER;
 238         }
 239
 240         /* Store the DN of our machine account. */
 241         account_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
 242
 243         /* Now we know the user's DN, open with LDAP, read and modify a few things */
 244
 245         remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
 246                 dcerpc_binding_get_string_option(drsuapi_binding, "target_hostname"));
 247         if (!remote_ldb_url) {
 248                 r->out.error_string = NULL;
 249                 talloc_free(tmp_ctx);
 250                 return NT_STATUS_NO_MEMORY;
 251         }
 252
 253         remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
 254                                       remote_ldb_url,
 255                                       NULL, ctx->cred, 0);
 256         if (!remote_ldb) {
 257                 r->out.error_string = NULL;
 258                 talloc_free(tmp_ctx);
 259                 return NT_STATUS_UNSUCCESSFUL;
 260         }
 261
 262         account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
 263         if (account_dn == NULL) {
 264                 r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
 265                                                       account_dn_str);
 266                 talloc_free(tmp_ctx);
 267                 return NT_STATUS_UNSUCCESSFUL;
 268         }
 269
 270         /* search for the user's record */
 271         ret = ldb_search(remote_ldb, tmp_ctx, &res,
 272                          account_dn, LDB_SCOPE_BASE, attrs, NULL);
 273         if (ret != LDB_SUCCESS) {
 274                 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
 275                                                       account_dn_str, ldb_errstring(remote_ldb));
 276                 talloc_free(tmp_ctx);
 277                 return NT_STATUS_UNSUCCESSFUL;
 278         }
 279
 280         if (res->count != 1) {
 281                 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
 282                                                       account_dn_str, res->count);
 283                 talloc_free(tmp_ctx);
 284                 return NT_STATUS_UNSUCCESSFUL;
 285         }
 286
 287         /* Prepare a new message, for the modify */
 288         msg = ldb_msg_new(tmp_ctx);
 289         if (!msg) {
 290                 r->out.error_string = NULL;
 291                 talloc_free(tmp_ctx);
 292                 return NT_STATUS_NO_MEMORY;
 293         }
 294         msg->dn = res->msgs[0]->dn;
 295
 296         {
 297                 unsigned int i;
 298                 const char *service_principal_name[2];
 299                 const char *dns_host_name = strlower_talloc(msg,
 300                                                             talloc_asprintf(msg,
 301                                                                             "%s.%s",
 302                                                                             r->in.netbios_name,
 303                                                                             realm));
 304
 305                 if (!dns_host_name) {
 306                         r->out.error_string = NULL;
 307                         talloc_free(tmp_ctx);
 308                         return NT_STATUS_NO_MEMORY;
 309                 }
 310
 311                 service_principal_name[0] = talloc_asprintf(msg, "HOST/%s",
 312                                                             dns_host_name);
 313                 service_principal_name[1] = talloc_asprintf(msg, "HOST/%s",
 314                                                             r->in.netbios_name);
 315
 316                 for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
 317                         if (!service_principal_name[i]) {
 318                                 r->out.error_string = NULL;
 319                                 talloc_free(tmp_ctx);
 320                                 return NT_STATUS_NO_MEMORY;
 321                         }
 322                         rtn = ldb_msg_add_string(msg, "servicePrincipalName",
 323                                                  service_principal_name[i]);
 324                         if (rtn != LDB_SUCCESS) {
 325                                 r->out.error_string = NULL;
 326                                 talloc_free(tmp_ctx);
 327                                 return NT_STATUS_NO_MEMORY;
 328                         }
 329                 }
 330
 331                 rtn = ldb_msg_add_string(msg, "dNSHostName", dns_host_name);
 332                 if (rtn != LDB_SUCCESS) {
 333                         r->out.error_string = NULL;
 334                         talloc_free(tmp_ctx);
 335                         return NT_STATUS_NO_MEMORY;
 336                 }
 337
 338                 rtn = dsdb_replace(remote_ldb, msg, 0);
 339                 if (rtn != LDB_SUCCESS) {
 340                         r->out.error_string
 341                                 = talloc_asprintf(r,
 342                                                   "Failed to replace entries on %s",
 343                                                   ldb_dn_get_linearized(msg->dn));
 344                         talloc_free(tmp_ctx);
 345                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 346                 }
 347         }
 348
 349         msg = ldb_msg_new(tmp_ctx);
 350         if (!msg) {
 351                 r->out.error_string = NULL;
 352                 talloc_free(tmp_ctx);
 353                 return NT_STATUS_NO_MEMORY;
 354         }
 355         msg->dn = res->msgs[0]->dn;
 356
 357         rtn = samdb_msg_add_uint(remote_ldb, msg, msg,
 358                                  "msDS-SupportedEncryptionTypes", ENC_ALL_TYPES);
 359         if (rtn != LDB_SUCCESS) {
 360                 r->out.error_string = NULL;
 361                 talloc_free(tmp_ctx);
 362                 return NT_STATUS_NO_MEMORY;
 363         }
 364
 365         rtn = dsdb_replace(remote_ldb, msg, 0);
 366         /* The remote server may not support this attribute, if it
 367          * isn't a modern schema */
 368         if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
 369                 r->out.error_string
 370                         = talloc_asprintf(r,
 371                                           "Failed to replace msDS-SupportedEncryptionTypes on %s",
 372                                           ldb_dn_get_linearized(msg->dn));
 373                 talloc_free(tmp_ctx);
 374                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 375         }
 376
 377         /* DsCrackNames to find out the DN of the domain. */
 378         r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
 379         r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 380         names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
 381         if (!names[0].str) {
 382                 r->out.error_string = NULL;
 383                 talloc_free(tmp_ctx);
 384                 return NT_STATUS_NO_MEMORY;
 385         }
 386
 387         status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
 388         if (!NT_STATUS_IS_OK(status)) {
 389                 r->out.error_string
 390                         = talloc_asprintf(r,
 391                                           "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
 392                                           r->in.domain_name,
 393                                           nt_errstr(status));
 394                 talloc_free(tmp_ctx);
 395                 return status;
 396         } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
 397                 r->out.error_string
 398                         = talloc_asprintf(r,
 399                                           "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
 400                 talloc_free(tmp_ctx);
 401                 return NT_STATUS_UNSUCCESSFUL;
 402         } else if (*r_crack_names.out.level_out != 1
 403                    || !r_crack_names.out.ctr->ctr1
 404                    || r_crack_names.out.ctr->ctr1->count != 1
 405                    || !r_crack_names.out.ctr->ctr1->array[0].result_name
 406                    || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 407                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
 408                 talloc_free(tmp_ctx);
 409                 return NT_STATUS_UNSUCCESSFUL;
 410         }
 411
 412         /* Store the account DN. */
 413         r->out.account_dn_str = account_dn_str;
 414         talloc_steal(r, account_dn_str);
 415
 416         /* Store the domain DN. */
 417         r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
 418         talloc_steal(r, r_crack_names.out.ctr->ctr1->array[0].result_name);
 419
 420         /* Store the KVNO of the account, critical for some kerberos
 421          * operations */
 422         r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
 423
 424         /* Store the account GUID. */
 425         r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
 426
 427         if (r->in.acct_type == ACB_SVRTRUST) {
 428                 status = libnet_JoinSite(ctx, remote_ldb, r);
 429         }
 430         talloc_free(tmp_ctx);
 431
 432         return status;
 433 }
 434
 435 /*
 436  * do a domain join using DCERPC/SAMR calls
 437  * - connect to the LSA pipe, to try and find out information about the domain
 438  * - create a secondary connection to SAMR pipe
 439  * - do a samr_Connect to get a policy handle
 440  * - do a samr_LookupDomain to get the domain sid
 441  * - do a samr_OpenDomain to get a domain handle
 442  * - do a samr_CreateAccount to try and get a new account
 443  *
 444  * If that fails, do:
 445  * - do a samr_LookupNames to get the users rid
 446  * - do a samr_OpenUser to get a user handle
 447  * - potentially delete and recreate the user
 448  * - assert the account is of the right type with samrQueryUserInfo
 449  *
 450  * - call libnet_SetPassword_samr_handle to set the password,
 451  *   and pass a samr_UserInfo21 struct to set full_name and the account flags
 452  *
 453  * - do some ADS specific things when we join as Domain Controller,
 454  *    look at libnet_joinADSDomain() for the details
 455  */
 456 NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
 457 {
 458         TALLOC_CTX *tmp_ctx;
 459
 460         NTSTATUS status, cu_status;
 461
 462         struct libnet_RpcConnect *connect_with_info;
 463         struct dcerpc_pipe *samr_pipe;
 464
 465         struct samr_Connect sc;
 466         struct policy_handle p_handle;
 467         struct samr_OpenDomain od;
 468         struct policy_handle d_handle;
 469         struct samr_LookupNames ln;
 470         struct samr_Ids rids, types;
 471         struct samr_OpenUser ou;
 472         struct samr_CreateUser2 cu;
 473         struct policy_handle *u_handle = NULL;
 474         struct samr_QueryUserInfo qui;
 475         union samr_UserInfo *uinfo;
 476         struct samr_UserInfo21 u_info21;
 477         union libnet_SetPassword r2;
 478         struct samr_GetUserPwInfo pwp;
 479         struct samr_PwInfo info;
 480         struct lsa_String samr_account_name;
 481
 482         uint32_t acct_flags, old_acct_flags;
 483         uint32_t rid, access_granted;
 484         int policy_min_pw_len = 0;
 485
 486         struct dom_sid *account_sid = NULL;
 487         const char *password_str = NULL;
 488
 489         r->out.error_string = NULL;
 490         ZERO_STRUCT(r2);
 491
 492         tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
 493         if (!tmp_ctx) {
 494                 r->out.error_string = NULL;
 495                 return NT_STATUS_NO_MEMORY;
 496         }
 497
 498         u_handle = talloc(tmp_ctx, struct policy_handle);
 499         if (!u_handle) {
 500                 r->out.error_string = NULL;
 501                 talloc_free(tmp_ctx);
 502                 return NT_STATUS_NO_MEMORY;
 503         }
 504
 505         connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
 506         if (!connect_with_info) {
 507                 r->out.error_string = NULL;
 508                 talloc_free(tmp_ctx);
 509                 return NT_STATUS_NO_MEMORY;
 510         }
 511
 512         /* prepare connect to the SAMR pipe of PDC */
 513         if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
 514                 connect_with_info->in.binding = NULL;
 515                 connect_with_info->in.name    = r->in.domain_name;
 516         } else {
 517                 connect_with_info->in.binding = r->in.binding;
 518                 connect_with_info->in.name    = NULL;
 519         }
 520
 521         /* This level makes a connection to the LSA pipe on the way,
 522          * to get some useful bits of information about the domain */
 523         connect_with_info->level              = LIBNET_RPC_CONNECT_DC_INFO;
 524         connect_with_info->in.dcerpc_iface    = &ndr_table_samr;
 525
 526         /*
 527           establish the SAMR connection
 528         */
 529         status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
 530         if (!NT_STATUS_IS_OK(status)) {
 531                 if (r->in.binding) {
 532                         r->out.error_string = talloc_asprintf(mem_ctx,
 533                                                               "Connection to SAMR pipe of DC %s failed: %s",
 534                                                               r->in.binding, connect_with_info->out.error_string);
 535                 } else {
 536                         r->out.error_string = talloc_asprintf(mem_ctx,
 537                                                               "Connection to SAMR pipe of PDC for %s failed: %s",
 538                                                               r->in.domain_name, connect_with_info->out.error_string);
 539                 }
 540                 talloc_free(tmp_ctx);
 541                 return status;
 542         }
 543
 544         samr_pipe = connect_with_info->out.dcerpc_pipe;
 545
 546         /* prepare samr_Connect */
 547         ZERO_STRUCT(p_handle);
 548         sc.in.system_name = NULL;
 549         sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 550         sc.out.connect_handle = &p_handle;
 551
 552         /* 2. do a samr_Connect to get a policy handle */
 553         status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
 554         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
 555                 status = sc.out.result;
 556         }
 557         if (!NT_STATUS_IS_OK(status)) {
 558                 r->out.error_string = talloc_asprintf(mem_ctx,
 559                                                 "samr_Connect failed: %s",
 560                                                 nt_errstr(status));
 561                 talloc_free(tmp_ctx);
 562                 return status;
 563         }
 564
 565         /* If this is a connection on ncacn_ip_tcp to Win2k3 SP1, we don't get back this useful info */
 566         if (!connect_with_info->out.domain_name) {
 567                 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
 568                         connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, r->in.domain_name);
 569                 } else {
 570                         /* Bugger, we just lost our way to automatically find the domain name */
 571                         connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
 572                         connect_with_info->out.realm = talloc_strdup(tmp_ctx, lpcfg_realm(ctx->lp_ctx));
 573                 }
 574         }
 575
 576         /* Perhaps we didn't get a SID above, because we are against ncacn_ip_tcp */
 577         if (!connect_with_info->out.domain_sid) {
 578                 struct lsa_String name;
 579                 struct samr_LookupDomain l;
 580                 struct dom_sid2 *sid = NULL;
 581                 name.string = connect_with_info->out.domain_name;
 582                 l.in.connect_handle = &p_handle;
 583                 l.in.domain_name = &name;
 584                 l.out.sid = &sid;
 585
 586                 status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
 587                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
 588                         status = l.out.result;
 589                 }
 590                 if (!NT_STATUS_IS_OK(status)) {
 591                         r->out.error_string = talloc_asprintf(mem_ctx,
 592                                                               "SAMR LookupDomain failed: %s",
 593                                                               nt_errstr(status));
 594                         talloc_free(tmp_ctx);
 595                         return status;
 596                 }
 597                 connect_with_info->out.domain_sid = *l.out.sid;
 598         }
 599
 600         /* prepare samr_OpenDomain */
 601         ZERO_STRUCT(d_handle);
 602         od.in.connect_handle = &p_handle;
 603         od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 604         od.in.sid = connect_with_info->out.domain_sid;
 605         od.out.domain_handle = &d_handle;
 606
 607         /* do a samr_OpenDomain to get a domain handle */
 608         status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
 609         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
 610                 status = od.out.result;
 611         }
 612         if (!NT_STATUS_IS_OK(status)) {
 613                 struct dom_sid_buf buf;
 614                 r->out.error_string = talloc_asprintf(
 615                         mem_ctx,
 616                         "samr_OpenDomain for [%s] failed: %s",
 617                         dom_sid_str_buf(connect_with_info->out.domain_sid,
 618                                         &buf),
 619                         nt_errstr(status));
 620                 talloc_free(tmp_ctx);
 621                 return status;
 622         }
 623
 624         /* prepare samr_CreateUser2 */
 625         ZERO_STRUCTP(u_handle);
 626         cu.in.domain_handle  = &d_handle;
 627         cu.in.access_mask     = SEC_FLAG_MAXIMUM_ALLOWED;
 628         samr_account_name.string = r->in.account_name;
 629         cu.in.account_name    = &samr_account_name;
 630         cu.in.acct_flags      = r->in.acct_type;
 631         cu.out.user_handle    = u_handle;
 632         cu.out.rid            = &rid;
 633         cu.out.access_granted = &access_granted;
 634
 635         /* do a samr_CreateUser2 to get an account handle, or an error */
 636         cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
 637         if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
 638                 cu_status = cu.out.result;
 639         }
 640         status = cu_status;
 641         if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 642                 /* prepare samr_LookupNames */
 643                 ln.in.domain_handle = &d_handle;
 644                 ln.in.num_names = 1;
 645                 ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
 646                 ln.out.rids = &rids;
 647                 ln.out.types = &types;
 648                 if (!ln.in.names) {
 649                         r->out.error_string = NULL;
 650                         talloc_free(tmp_ctx);
 651                         return NT_STATUS_NO_MEMORY;
 652                 }
 653                 ln.in.names[0].string = r->in.account_name;
 654
 655                 /* 5. do a samr_LookupNames to get the users rid */
 656                 status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
 657                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
 658                         status = ln.out.result;
 659                 }
 660                 if (!NT_STATUS_IS_OK(status)) {
 661                         r->out.error_string = talloc_asprintf(mem_ctx,
 662                                                 "samr_LookupNames for [%s] failed: %s",
 663                                                 r->in.account_name,
 664                                                 nt_errstr(status));
 665                         talloc_free(tmp_ctx);
 666                         return status;
 667                 }
 668
 669                 /* check if we got one RID for the user */
 670                 if (ln.out.rids->count != 1) {
 671                         r->out.error_string = talloc_asprintf(mem_ctx,
 672                                                               "samr_LookupNames for [%s] returns %d RIDs",
 673                                                               r->in.account_name, ln.out.rids->count);
 674                         talloc_free(tmp_ctx);
 675                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 676                 }
 677
 678                 if (ln.out.types->count != 1) {
 679                         r->out.error_string = talloc_asprintf(mem_ctx,
 680                                                                 "samr_LookupNames for [%s] returns %d RID TYPEs",
 681                                                                 r->in.account_name, ln.out.types->count);
 682                         talloc_free(tmp_ctx);
 683                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
 684                 }
 685
 686                 /* prepare samr_OpenUser */
 687                 ZERO_STRUCTP(u_handle);
 688                 ou.in.domain_handle = &d_handle;
 689                 ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 690                 ou.in.rid = ln.out.rids->ids[0];
 691                 rid = ou.in.rid;
 692                 ou.out.user_handle = u_handle;
 693
 694                 /* 6. do a samr_OpenUser to get a user handle */
 695                 status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
 696                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
 697                         status = ou.out.result;
 698                 }
 699                 if (!NT_STATUS_IS_OK(status)) {
 700                         r->out.error_string = talloc_asprintf(mem_ctx,
 701                                                         "samr_OpenUser for [%s] failed: %s",
 702                                                         r->in.account_name,
 703                                                         nt_errstr(status));
 704                         talloc_free(tmp_ctx);
 705                         return status;
 706                 }
 707
 708                 if (r->in.recreate_account) {
 709                         struct samr_DeleteUser d;
 710                         d.in.user_handle = u_handle;
 711                         d.out.user_handle = u_handle;
 712                         status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
 713                         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
 714                                 status = d.out.result;
 715                         }
 716                         if (!NT_STATUS_IS_OK(status)) {
 717                                 r->out.error_string = talloc_asprintf(mem_ctx,
 718                                                                       "samr_DeleteUser (for recreate) of [%s] failed: %s",
 719                                                                       r->in.account_name,
 720                                                                       nt_errstr(status));
 721                                 talloc_free(tmp_ctx);
 722                                 return status;
 723                         }
 724
 725                         /* We want to recreate, so delete and another samr_CreateUser2 */
 726
 727                         /* &cu filled in above */
 728                         status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
 729                         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
 730                                 status = cu.out.result;
 731                         }
 732                         if (!NT_STATUS_IS_OK(status)) {
 733                                 r->out.error_string = talloc_asprintf(mem_ctx,
 734                                                                       "samr_CreateUser2 (recreate) for [%s] failed: %s",
 735                                                                       r->in.account_name, nt_errstr(status));
 736                                 talloc_free(tmp_ctx);
 737                                 return status;
 738                         }
 739                 }
 740         } else if (!NT_STATUS_IS_OK(status)) {
 741                 r->out.error_string = talloc_asprintf(mem_ctx,
 742                                                       "samr_CreateUser2 for [%s] failed: %s",
 743                                                       r->in.account_name, nt_errstr(status));
 744                 talloc_free(tmp_ctx);
 745                 return status;
 746         }
 747
 748         /* prepare samr_QueryUserInfo (get flags) */
 749         qui.in.user_handle = u_handle;
 750         qui.in.level = 16;
 751         qui.out.info = &uinfo;
 752
 753         status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
 754         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
 755                 status = qui.out.result;
 756         }
 757         if (!NT_STATUS_IS_OK(status)) {
 758                 r->out.error_string = talloc_asprintf(mem_ctx,
 759                                                 "samr_QueryUserInfo for [%s] failed: %s",
 760                                                 r->in.account_name,
 761                                                 nt_errstr(status));
 762                 talloc_free(tmp_ctx);
 763                 return status;
 764         }
 765
 766         if (!uinfo) {
 767                 status = NT_STATUS_INVALID_PARAMETER;
 768                 r->out.error_string
 769                         = talloc_asprintf(mem_ctx,
 770                                           "samr_QueryUserInfo failed to return qui.out.info for [%s]: %s",
 771                                           r->in.account_name, nt_errstr(status));
 772                 talloc_free(tmp_ctx);
 773                 return status;
 774         }
 775
 776         old_acct_flags = (uinfo->info16.acct_flags & (ACB_WSTRUST | ACB_SVRTRUST | ACB_DOMTRUST));
 777         /* Possibly bail if the account is of the wrong type */
 778         if (old_acct_flags
 779             != r->in.acct_type) {
 780                 const char *old_account_type, *new_account_type;
 781                 switch (old_acct_flags) {
 782                 case ACB_WSTRUST:
 783                         old_account_type = "domain member (member)";
 784                         break;
 785                 case ACB_SVRTRUST:
 786                         old_account_type = "domain controller (bdc)";
 787                         break;
 788                 case ACB_DOMTRUST:
 789                         old_account_type = "trusted domain";
 790                         break;
 791                 default:
 792                         return NT_STATUS_INVALID_PARAMETER;
 793                 }
 794                 switch (r->in.acct_type) {
 795                 case ACB_WSTRUST:
 796                         new_account_type = "domain member (member)";
 797                         break;
 798                 case ACB_SVRTRUST:
 799                         new_account_type = "domain controller (bdc)";
 800                         break;
 801                 case ACB_DOMTRUST:
 802                         new_account_type = "trusted domain";
 803                         break;
 804                 default:
 805                         return NT_STATUS_INVALID_PARAMETER;
 806                 }
 807
 808                 if (!NT_STATUS_EQUAL(cu_status, NT_STATUS_USER_EXISTS)) {
 809                         /* We created a new user, but they didn't come out the right type?!? */
 810                         r->out.error_string
 811                                 = talloc_asprintf(mem_ctx,
 812                                                   "We asked to create a new machine account (%s) of type %s, "
 813                                                   "but we got an account of type %s.  This is unexpected.  "
 814                                                   "Perhaps delete the account and try again.",
 815                                                   r->in.account_name, new_account_type, old_account_type);
 816                         talloc_free(tmp_ctx);
 817                         return NT_STATUS_INVALID_PARAMETER;
 818                 } else {
 819                         /* The account is of the wrong type, so bail */
 820
 821                         /* TODO: We should allow a --force option to override, and redo this from the top setting r.in.recreate_account */
 822                         r->out.error_string
 823                                 = talloc_asprintf(mem_ctx,
 824                                                   "The machine account (%s) already exists in the domain %s, "
 825                                                   "but is a %s.  You asked to join as a %s.  Please delete "
 826                                                   "the account and try again.",
 827                                                   r->in.account_name, connect_with_info->out.domain_name, old_account_type, new_account_type);
 828                         talloc_free(tmp_ctx);
 829                         return NT_STATUS_USER_EXISTS;
 830                 }
 831         } else {
 832                 acct_flags = uinfo->info16.acct_flags;
 833         }
 834
 835         acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
 836
 837         /* Find out what password policy this user has */
 838         pwp.in.user_handle = u_handle;
 839         pwp.out.info = &info;
 840
 841         status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
 842         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
 843                 status = pwp.out.result;
 844         }
 845         if (NT_STATUS_IS_OK(status)) {
 846                 policy_min_pw_len = pwp.out.info->min_password_length;
 847         }
 848
 849         if (r->in.account_pass != NULL) {
 850                 password_str = talloc_strdup(tmp_ctx, r->in.account_pass);
 851         } else {
 852                 /* Grab a password of that minimum length */
 853                 password_str = generate_random_password(tmp_ctx,
 854                                         MAX(8, policy_min_pw_len), 255);
 855         }
 856         if (!password_str) {
 857                 r->out.error_string = NULL;
 858                 talloc_free(tmp_ctx);
 859                 return NT_STATUS_NO_MEMORY;
 860         }
 861
 862         /* set full_name and reset flags */
 863         ZERO_STRUCT(u_info21);
 864         u_info21.full_name.string       = r->in.account_name;
 865         u_info21.acct_flags             = acct_flags;
 866         u_info21.fields_present         = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
 867
 868         r2.samr_handle.level            = LIBNET_SET_PASSWORD_SAMR_HANDLE;
 869         r2.samr_handle.in.account_name  = r->in.account_name;
 870         r2.samr_handle.in.newpassword   = password_str;
 871         r2.samr_handle.in.user_handle   = u_handle;
 872         r2.samr_handle.in.dcerpc_pipe   = samr_pipe;
 873         r2.samr_handle.in.info21        = &u_info21;
 874
 875         status = libnet_SetPassword(ctx, tmp_ctx, &r2);
 876         if (!NT_STATUS_IS_OK(status)) {
 877                 r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
 878                 talloc_free(tmp_ctx);
 879                 return status;
 880         }
 881
 882         account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
 883         if (!account_sid) {
 884                 r->out.error_string = NULL;
 885                 talloc_free(tmp_ctx);
 886                 return NT_STATUS_NO_MEMORY;
 887         }
 888
 889         /* Finish out by pushing various bits of status data out for the caller to use */
 890         r->out.join_password = password_str;
 891         talloc_steal(mem_ctx, r->out.join_password);
 892
 893         r->out.domain_sid = connect_with_info->out.domain_sid;
 894         talloc_steal(mem_ctx, r->out.domain_sid);
 895
 896         r->out.account_sid = account_sid;
 897         talloc_steal(mem_ctx, r->out.account_sid);
 898
 899         r->out.domain_name = connect_with_info->out.domain_name;
 900         talloc_steal(mem_ctx, r->out.domain_name);
 901         r->out.realm = connect_with_info->out.realm;
 902         talloc_steal(mem_ctx, r->out.realm);
 903         r->out.samr_pipe = samr_pipe;
 904         talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
 905         r->out.samr_binding = samr_pipe->binding;
 906         r->out.user_handle = u_handle;
 907         talloc_steal(mem_ctx, u_handle);
 908         r->out.error_string = r2.samr_handle.out.error_string;
 909         talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
 910         r->out.kvno = 0;
 911         r->out.server_dn_str = NULL;
 912         talloc_free(tmp_ctx);
 913
 914         /* Now, if it was AD, then we want to start looking changing a
 915          * few more things.  Otherwise, we are done. */
 916         if (r->out.realm) {
 917                 status = libnet_JoinADSDomain(ctx, r);
 918                 return status;
 919         }
 920
 921         return status;
 922 }
 923
 924 NTSTATUS libnet_Join_member(struct libnet_context *ctx,
 925                             TALLOC_CTX *mem_ctx,
 926                             struct libnet_Join_member *r)
 927 {
 928         NTSTATUS status;
 929         TALLOC_CTX *tmp_mem;
 930         struct libnet_JoinDomain *r2;
 931         struct provision_store_self_join_settings *set_secrets;
 932         uint32_t acct_type = 0;
 933         const char *account_name;
 934         const char *netbios_name;
 935         const char *error_string = NULL;
 936
 937         r->out.error_string = NULL;
 938
 939         tmp_mem = talloc_new(mem_ctx);
 940         if (!tmp_mem) {
 941                 return NT_STATUS_NO_MEMORY;
 942         }
 943
 944         r2 = talloc_zero(tmp_mem, struct libnet_JoinDomain);
 945         if (!r2) {
 946                 status = NT_STATUS_NO_MEMORY;
 947                 goto out;
 948         }
 949
 950         acct_type = ACB_WSTRUST;
 951
 952         if (r->in.netbios_name != NULL) {
 953                 netbios_name = r->in.netbios_name;
 954         } else {
 955                 netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
 956                 if (!netbios_name) {
 957                         status = NT_STATUS_NO_MEMORY;
 958                         goto out;
 959                 }
 960         }
 961
 962         account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
 963         if (!account_name) {
 964                 status = NT_STATUS_NO_MEMORY;
 965                 goto out;
 966         }
 967
 968         /*
 969          * join the domain
 970          */
 971         r2->in.domain_name      = r->in.domain_name;
 972         r2->in.account_name     = account_name;
 973         r2->in.netbios_name     = netbios_name;
 974         r2->in.level            = LIBNET_JOINDOMAIN_AUTOMATIC;
 975         r2->in.acct_type        = acct_type;
 976         r2->in.recreate_account = false;
 977         r2->in.account_pass     = r->in.account_pass;
 978         status = libnet_JoinDomain(ctx, r2, r2);
 979         if (!NT_STATUS_IS_OK(status)) {
 980                 r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
 981                 goto out;
 982         }
 983
 984         set_secrets = talloc_zero(tmp_mem,
 985                                   struct provision_store_self_join_settings);
 986         if (!set_secrets) {
 987                 status = NT_STATUS_NO_MEMORY;
 988                 goto out;
 989         }
 990
 991         set_secrets->domain_name = r2->out.domain_name;
 992         set_secrets->realm = r2->out.realm;
 993         set_secrets->netbios_name = netbios_name;
 994         set_secrets->secure_channel_type = SEC_CHAN_WKSTA;
 995         set_secrets->machine_password = r2->out.join_password;
 996         set_secrets->key_version_number = r2->out.kvno;
 997         set_secrets->domain_sid = r2->out.domain_sid;
 998
 999         status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
1000         if (!NT_STATUS_IS_OK(status)) {
1001                 if (error_string) {
1002                         r->out.error_string = talloc_steal(mem_ctx, error_string);
1003                 } else {
1004                         r->out.error_string
1005                                 = talloc_asprintf(mem_ctx,
1006                                                   "provision_store_self_join failed with %s",
1007                                                   nt_errstr(status));
1008                 }
1009                 goto out;
1010         }
1011
1012         /* move all out parameter to the callers TALLOC_CTX */
1013         r->out.join_password    = talloc_move(mem_ctx, &r2->out.join_password);
1014         r->out.domain_sid       = talloc_move(mem_ctx, &r2->out.domain_sid);
1015         r->out.domain_name      = talloc_move(mem_ctx, &r2->out.domain_name);
1016         status = NT_STATUS_OK;
1017 out:
1018         talloc_free(tmp_mem);
1019         return status;
1020 }
1021