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 "lib/ldb/include/ldb.h"
  26 #include "lib/ldb/include/ldb_errors.h"
  27 #include "param/secrets.h"
  28 #include "dsdb/samdb/samdb.h"
  29 #include "ldb_wrap.h"
  30 #include "../lib/util/util_ldb.h"
  31 #include "libcli/security/security.h"
  32 #include "auth/credentials/credentials.h"
  33 #include "auth/credentials/credentials_krb5.h"
  34 #include "librpc/gen_ndr/ndr_samr_c.h"
  35 #include "param/param.h"
  36 #include "param/provision.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         struct dcerpc_binding *samr_binding = r->out.samr_binding;
  57
  58         struct dcerpc_pipe *drsuapi_pipe;
  59         struct dcerpc_binding *drsuapi_binding;
  60         struct drsuapi_DsBind r_drsuapi_bind;
  61         struct drsuapi_DsCrackNames r_crack_names;
  62         struct drsuapi_DsNameString names[1];
  63         struct policy_handle drsuapi_bind_handle;
  64         struct GUID drsuapi_bind_guid;
  65
  66         struct ldb_context *remote_ldb;
  67         struct ldb_dn *account_dn;
  68         const char *account_dn_str;
  69         const char *remote_ldb_url;
  70         struct ldb_result *res;
  71         struct ldb_message *msg;
  72
  73         int ret, rtn;
  74
  75         const char * const attrs[] = {
  76                 "msDS-KeyVersionNumber",
  77                 "servicePrincipalName",
  78                 "dNSHostName",
  79                 "objectGUID",
  80                 NULL,
  81         };
  82
  83         r->out.error_string = NULL;
  84
  85         /* We need to convert between a samAccountName and domain to a
  86          * DN in the directory.  The correct way to do this is with
  87          * DRSUAPI CrackNames */
  88
  89         /* Fiddle with the bindings, so get to DRSUAPI on
  90          * NCACN_IP_TCP, sealed */
  91         tmp_ctx = talloc_named(r, 0, "libnet_JoinADSDomain temp context");
  92         if (!tmp_ctx) {
  93                 r->out.error_string = NULL;
  94                 return NT_STATUS_NO_MEMORY;
  95         }
  96
  97         drsuapi_binding = talloc(tmp_ctx, struct dcerpc_binding);
  98         if (!drsuapi_binding) {
  99                 r->out.error_string = NULL;
 100                 talloc_free(tmp_ctx);
 101                 return NT_STATUS_NO_MEMORY;
 102         }
 103
 104         *drsuapi_binding = *samr_binding;
 105
 106         /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
 107         if (drsuapi_binding->transport != NCALRPC) {
 108                 drsuapi_binding->transport = NCACN_IP_TCP;
 109         }
 110         drsuapi_binding->endpoint = NULL;
 111         drsuapi_binding->flags |= DCERPC_SEAL;
 112
 113         status = dcerpc_pipe_connect_b(tmp_ctx,
 114                                        &drsuapi_pipe,
 115                                        drsuapi_binding,
 116                                        &ndr_table_drsuapi,
 117                                        ctx->cred,
 118                                        ctx->event_ctx,
 119                                        ctx->lp_ctx);
 120         if (!NT_STATUS_IS_OK(status)) {
 121                 r->out.error_string = talloc_asprintf(r,
 122                                         "Connection to DRSUAPI pipe of PDC of domain '%s' failed: %s",
 123                                         r->out.domain_name,
 124                                         nt_errstr(status));
 125                 talloc_free(tmp_ctx);
 126                 return status;
 127         }
 128
 129         /* get a DRSUAPI pipe handle */
 130         GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
 131
 132         r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
 133         r_drsuapi_bind.in.bind_info = NULL;
 134         r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
 135
 136         status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
 137         if (!NT_STATUS_IS_OK(status)) {
 138                 r->out.error_string
 139                         = talloc_asprintf(r,
 140                                           "dcerpc_drsuapi_DsBind failed - %s",
 141                                           nt_errstr(status));
 142                 talloc_free(tmp_ctx);
 143                 return status;
 144         } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
 145                 r->out.error_string
 146                                 = talloc_asprintf(r,
 147                                                   "DsBind failed - %s",
 148                                                   win_errstr(r_drsuapi_bind.out.result));
 149                         talloc_free(tmp_ctx);
 150                 return NT_STATUS_UNSUCCESSFUL;
 151         }
 152
 153         /* Actually 'crack' the names */
 154         ZERO_STRUCT(r_crack_names);
 155         r_crack_names.in.bind_handle            = &drsuapi_bind_handle;
 156         r_crack_names.in.level                  = 1;
 157         r_crack_names.in.req                    = talloc(r, union drsuapi_DsNameRequest);
 158         if (!r_crack_names.in.req) {
 159                 r->out.error_string = NULL;
 160                 talloc_free(tmp_ctx);
 161                 return NT_STATUS_NO_MEMORY;
 162         }
 163         r_crack_names.in.req->req1.codepage     = 1252; /* western european */
 164         r_crack_names.in.req->req1.language     = 0x00000407; /* german */
 165         r_crack_names.in.req->req1.count        = 1;
 166         r_crack_names.in.req->req1.names        = names;
 167         r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
 168         r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
 169         r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 170         names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
 171         if (!names[0].str) {
 172                 r->out.error_string = NULL;
 173                 talloc_free(tmp_ctx);
 174                 return NT_STATUS_NO_MEMORY;
 175         }
 176
 177         r_crack_names.out.ctr                   = talloc(r, union drsuapi_DsNameCtr);
 178         r_crack_names.out.level_out             = talloc(r, uint32_t);
 179         if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
 180                 r->out.error_string = NULL;
 181                 talloc_free(tmp_ctx);
 182                 return NT_STATUS_NO_MEMORY;
 183         }
 184
 185         status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
 186         if (!NT_STATUS_IS_OK(status)) {
 187                 r->out.error_string
 188                         = talloc_asprintf(r,
 189                                           "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
 190                                           names[0].str,
 191                                           nt_errstr(status));
 192                 talloc_free(tmp_ctx);
 193                 return status;
 194         } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
 195                 r->out.error_string
 196                                 = talloc_asprintf(r,
 197                                                   "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
 198                 talloc_free(tmp_ctx);
 199                 return NT_STATUS_UNSUCCESSFUL;
 200         } else if (*r_crack_names.out.level_out != 1
 201                    || !r_crack_names.out.ctr->ctr1
 202                    || r_crack_names.out.ctr->ctr1->count != 1) {
 203                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
 204                 talloc_free(tmp_ctx);
 205                 return NT_STATUS_INVALID_PARAMETER;
 206         } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 207                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
 208                 talloc_free(tmp_ctx);
 209                 return NT_STATUS_UNSUCCESSFUL;
 210         } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
 211                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
 212                 talloc_free(tmp_ctx);
 213                 return NT_STATUS_INVALID_PARAMETER;
 214         }
 215
 216         /* Store the DN of our machine account. */
 217         account_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
 218
 219         /* Now we know the user's DN, open with LDAP, read and modify a few things */
 220
 221         remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
 222                                          drsuapi_binding->target_hostname);
 223         if (!remote_ldb_url) {
 224                 r->out.error_string = NULL;
 225                 talloc_free(tmp_ctx);
 226                 return NT_STATUS_NO_MEMORY;
 227         }
 228
 229         remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
 230                                       remote_ldb_url,
 231                                       NULL, ctx->cred, 0);
 232         if (!remote_ldb) {
 233                 r->out.error_string = NULL;
 234                 talloc_free(tmp_ctx);
 235                 return NT_STATUS_UNSUCCESSFUL;
 236         }
 237
 238         account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
 239         if (! ldb_dn_validate(account_dn)) {
 240                 r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
 241                                                       account_dn_str);
 242                 talloc_free(tmp_ctx);
 243                 return NT_STATUS_UNSUCCESSFUL;
 244         }
 245
 246         /* search for the user's record */
 247         ret = ldb_search(remote_ldb, tmp_ctx, &res,
 248                          account_dn, LDB_SCOPE_BASE, attrs, NULL);
 249         if (ret != LDB_SUCCESS) {
 250                 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
 251                                                       account_dn_str, ldb_errstring(remote_ldb));
 252                 talloc_free(tmp_ctx);
 253                 return NT_STATUS_UNSUCCESSFUL;
 254         }
 255
 256         if (res->count != 1) {
 257                 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
 258                                                       account_dn_str, res->count);
 259                 talloc_free(tmp_ctx);
 260                 return NT_STATUS_UNSUCCESSFUL;
 261         }
 262
 263         /* Prepare a new message, for the modify */
 264         msg = ldb_msg_new(tmp_ctx);
 265         if (!msg) {
 266                 r->out.error_string = NULL;
 267                 talloc_free(tmp_ctx);
 268                 return NT_STATUS_NO_MEMORY;
 269         }
 270         msg->dn = res->msgs[0]->dn;
 271
 272         {
 273                 unsigned int i;
 274                 const char *service_principal_name[6];
 275                 const char *dns_host_name = strlower_talloc(tmp_ctx,
 276                                                             talloc_asprintf(tmp_ctx,
 277                                                                             "%s.%s",
 278                                                                             r->in.netbios_name,
 279                                                                             realm));
 280
 281                 if (!dns_host_name) {
 282                         r->out.error_string = NULL;
 283                         talloc_free(tmp_ctx);
 284                         return NT_STATUS_NO_MEMORY;
 285                 }
 286
 287                 service_principal_name[0] = talloc_asprintf(tmp_ctx, "host/%s", dns_host_name);
 288                 service_principal_name[1] = talloc_asprintf(tmp_ctx, "host/%s", strlower_talloc(tmp_ctx, r->in.netbios_name));
 289                 service_principal_name[2] = talloc_asprintf(tmp_ctx, "host/%s/%s", dns_host_name, realm);
 290                 service_principal_name[3] = talloc_asprintf(tmp_ctx, "host/%s/%s", strlower_talloc(tmp_ctx, r->in.netbios_name), realm);
 291                 service_principal_name[4] = talloc_asprintf(tmp_ctx, "host/%s/%s", dns_host_name, r->out.domain_name);
 292                 service_principal_name[5] = talloc_asprintf(tmp_ctx, "host/%s/%s", strlower_talloc(tmp_ctx, r->in.netbios_name), r->out.domain_name);
 293
 294                 for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
 295                         if (!service_principal_name[i]) {
 296                                 r->out.error_string = NULL;
 297                                 talloc_free(tmp_ctx);
 298                                 return NT_STATUS_NO_MEMORY;
 299                         }
 300                         rtn = samdb_msg_add_string(remote_ldb, tmp_ctx, msg, "servicePrincipalName", service_principal_name[i]);
 301                         if (rtn != LDB_SUCCESS) {
 302                                 r->out.error_string = NULL;
 303                                 talloc_free(tmp_ctx);
 304                                 return NT_STATUS_NO_MEMORY;
 305                         }
 306                 }
 307
 308                 rtn = samdb_msg_add_string(remote_ldb, tmp_ctx, msg, "dNSHostName", dns_host_name);
 309                 if (rtn != LDB_SUCCESS) {
 310                         r->out.error_string = NULL;
 311                         talloc_free(tmp_ctx);
 312                         return NT_STATUS_NO_MEMORY;
 313                 }
 314
 315                 rtn = dsdb_replace(remote_ldb, msg, 0);
 316                 if (rtn != LDB_SUCCESS) {
 317                         r->out.error_string
 318                                 = talloc_asprintf(r,
 319                                                   "Failed to replace entries on %s",
 320                                                   ldb_dn_get_linearized(msg->dn));
 321                         talloc_free(tmp_ctx);
 322                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 323                 }
 324         }
 325
 326         msg = ldb_msg_new(tmp_ctx);
 327         if (!msg) {
 328                 r->out.error_string = NULL;
 329                 talloc_free(tmp_ctx);
 330                 return NT_STATUS_NO_MEMORY;
 331         }
 332         msg->dn = res->msgs[0]->dn;
 333
 334         rtn = ldb_msg_add_fmt(msg, "msDS-SupportedEncryptionTypes",
 335                               "%lu",
 336                               (long unsigned int)(ENC_CRC32 | ENC_RSA_MD5 |
 337                                                   ENC_RC4_HMAC_MD5 |
 338                                                   ENC_HMAC_SHA1_96_AES128 |
 339                                                   ENC_HMAC_SHA1_96_AES256));
 340         if (rtn != LDB_SUCCESS) {
 341                 r->out.error_string = NULL;
 342                 talloc_free(tmp_ctx);
 343                 return NT_STATUS_NO_MEMORY;
 344         }
 345
 346         rtn = dsdb_replace(remote_ldb, msg, 0);
 347         /* The remote server may not support this attribute, if it
 348          * isn't a modern schema */
 349         if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
 350                 r->out.error_string
 351                         = talloc_asprintf(r,
 352                                           "Failed to replace msDS-SupportedEncryptionTypes on %s",
 353                                           ldb_dn_get_linearized(msg->dn));
 354                 talloc_free(tmp_ctx);
 355                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 356         }
 357
 358         /* DsCrackNames to find out the DN of the domain. */
 359         r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
 360         r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 361         names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
 362         if (!names[0].str) {
 363                 r->out.error_string = NULL;
 364                 talloc_free(tmp_ctx);
 365                 return NT_STATUS_NO_MEMORY;
 366         }
 367
 368         status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
 369         if (!NT_STATUS_IS_OK(status)) {
 370                 r->out.error_string
 371                         = talloc_asprintf(r,
 372                                           "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
 373                                           r->in.domain_name,
 374                                           nt_errstr(status));
 375                 talloc_free(tmp_ctx);
 376                 return status;
 377         } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
 378                 r->out.error_string
 379                         = talloc_asprintf(r,
 380                                           "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
 381                 talloc_free(tmp_ctx);
 382                 return NT_STATUS_UNSUCCESSFUL;
 383         } else if (*r_crack_names.out.level_out != 1
 384                    || !r_crack_names.out.ctr->ctr1
 385                    || r_crack_names.out.ctr->ctr1->count != 1
 386                    || !r_crack_names.out.ctr->ctr1->array[0].result_name
 387                    || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 388                 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
 389                 talloc_free(tmp_ctx);
 390                 return NT_STATUS_UNSUCCESSFUL;
 391         }
 392
 393         /* Store the account DN. */
 394         r->out.account_dn_str = account_dn_str;
 395         talloc_steal(r, account_dn_str);
 396
 397         /* Store the domain DN. */
 398         r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
 399         talloc_steal(r, r_crack_names.out.ctr->ctr1->array[0].result_name);
 400
 401         /* Store the KVNO of the account, critical for some kerberos
 402          * operations */
 403         r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
 404
 405         /* Store the account GUID. */
 406         r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
 407
 408         if (r->in.acct_type == ACB_SVRTRUST) {
 409                 status = libnet_JoinSite(ctx, remote_ldb, r);
 410         }
 411         talloc_free(tmp_ctx);
 412
 413         return status;
 414 }
 415
 416 /*
 417  * do a domain join using DCERPC/SAMR calls
 418  * - connect to the LSA pipe, to try and find out information about the domain
 419  * - create a secondary connection to SAMR pipe
 420  * - do a samr_Connect to get a policy handle
 421  * - do a samr_LookupDomain to get the domain sid
 422  * - do a samr_OpenDomain to get a domain handle
 423  * - do a samr_CreateAccount to try and get a new account
 424  *
 425  * If that fails, do:
 426  * - do a samr_LookupNames to get the users rid
 427  * - do a samr_OpenUser to get a user handle
 428  * - potentially delete and recreate the user
 429  * - assert the account is of the right type with samrQueryUserInfo
 430  *
 431  * - call libnet_SetPassword_samr_handle to set the password,
 432  *   and pass a samr_UserInfo21 struct to set full_name and the account flags
 433  *
 434  * - do some ADS specific things when we join as Domain Controller,
 435  *    look at libnet_joinADSDomain() for the details
 436  */
 437 NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
 438 {
 439         TALLOC_CTX *tmp_ctx;
 440
 441         NTSTATUS status, cu_status;
 442
 443         struct libnet_RpcConnect *connect_with_info;
 444         struct dcerpc_pipe *samr_pipe;
 445
 446         struct samr_Connect sc;
 447         struct policy_handle p_handle;
 448         struct samr_OpenDomain od;
 449         struct policy_handle d_handle;
 450         struct samr_LookupNames ln;
 451         struct samr_Ids rids, types;
 452         struct samr_OpenUser ou;
 453         struct samr_CreateUser2 cu;
 454         struct policy_handle *u_handle = NULL;
 455         struct samr_QueryUserInfo qui;
 456         union samr_UserInfo *uinfo;
 457         struct samr_UserInfo21 u_info21;
 458         union libnet_SetPassword r2;
 459         struct samr_GetUserPwInfo pwp;
 460         struct samr_PwInfo info;
 461         struct lsa_String samr_account_name;
 462
 463         uint32_t acct_flags, old_acct_flags;
 464         uint32_t rid, access_granted;
 465         int policy_min_pw_len = 0;
 466
 467         struct dom_sid *account_sid = NULL;
 468         const char *password_str = NULL;
 469
 470         r->out.error_string = NULL;
 471         r2.samr_handle.out.error_string = NULL;
 472
 473         tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
 474         if (!tmp_ctx) {
 475                 r->out.error_string = NULL;
 476                 return NT_STATUS_NO_MEMORY;
 477         }
 478
 479         u_handle = talloc(tmp_ctx, struct policy_handle);
 480         if (!u_handle) {
 481                 r->out.error_string = NULL;
 482                 talloc_free(tmp_ctx);
 483                 return NT_STATUS_NO_MEMORY;
 484         }
 485
 486         connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
 487         if (!connect_with_info) {
 488                 r->out.error_string = NULL;
 489                 talloc_free(tmp_ctx);
 490                 return NT_STATUS_NO_MEMORY;
 491         }
 492
 493         /* prepare connect to the SAMR pipe of PDC */
 494         if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
 495                 connect_with_info->in.binding = NULL;
 496                 connect_with_info->in.name    = r->in.domain_name;
 497         } else {
 498                 connect_with_info->in.binding = r->in.binding;
 499                 connect_with_info->in.name    = NULL;
 500         }
 501
 502         /* This level makes a connection to the LSA pipe on the way,
 503          * to get some useful bits of information about the domain */
 504         connect_with_info->level              = LIBNET_RPC_CONNECT_DC_INFO;
 505         connect_with_info->in.dcerpc_iface    = &ndr_table_samr;
 506
 507         /*
 508           establish the SAMR connection
 509         */
 510         status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
 511         if (!NT_STATUS_IS_OK(status)) {
 512                 if (r->in.binding) {
 513                         r->out.error_string = talloc_asprintf(mem_ctx,
 514                                                               "Connection to SAMR pipe of DC %s failed: %s",
 515                                                               r->in.binding, connect_with_info->out.error_string);
 516                 } else {
 517                         r->out.error_string = talloc_asprintf(mem_ctx,
 518                                                               "Connection to SAMR pipe of PDC for %s failed: %s",
 519                                                               r->in.domain_name, connect_with_info->out.error_string);
 520                 }
 521                 talloc_free(tmp_ctx);
 522                 return status;
 523         }
 524
 525         samr_pipe = connect_with_info->out.dcerpc_pipe;
 526
 527         status = dcerpc_pipe_auth(tmp_ctx, &samr_pipe,
 528                                   connect_with_info->out.dcerpc_pipe->binding,
 529                                   &ndr_table_samr, ctx->cred, ctx->lp_ctx);
 530         if (!NT_STATUS_IS_OK(status)) {
 531                 r->out.error_string = talloc_asprintf(mem_ctx,
 532                                                 "SAMR bind failed: %s",
 533                                                 nt_errstr(status));
 534                 talloc_free(tmp_ctx);
 535                 return status;
 536         }
 537
 538         /* prepare samr_Connect */
 539         ZERO_STRUCT(p_handle);
 540         sc.in.system_name = NULL;
 541         sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 542         sc.out.connect_handle = &p_handle;
 543
 544         /* 2. do a samr_Connect to get a policy handle */
 545         status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
 546         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
 547                 status = sc.out.result;
 548         }
 549         if (!NT_STATUS_IS_OK(status)) {
 550                 r->out.error_string = talloc_asprintf(mem_ctx,
 551                                                 "samr_Connect failed: %s",
 552                                                 nt_errstr(status));
 553                 talloc_free(tmp_ctx);
 554                 return status;
 555         }
 556
 557         /* If this is a connection on ncacn_ip_tcp to Win2k3 SP1, we don't get back this useful info */
 558         if (!connect_with_info->out.domain_name) {
 559                 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
 560                         connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, r->in.domain_name);
 561                 } else {
 562                         /* Bugger, we just lost our way to automatically find the domain name */
 563                         connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
 564                         connect_with_info->out.realm = talloc_strdup(tmp_ctx, lpcfg_realm(ctx->lp_ctx));
 565                 }
 566         }
 567
 568         /* Perhaps we didn't get a SID above, because we are against ncacn_ip_tcp */
 569         if (!connect_with_info->out.domain_sid) {
 570                 struct lsa_String name;
 571                 struct samr_LookupDomain l;
 572                 struct dom_sid2 *sid = NULL;
 573                 name.string = connect_with_info->out.domain_name;
 574                 l.in.connect_handle = &p_handle;
 575                 l.in.domain_name = &name;
 576                 l.out.sid = &sid;
 577
 578                 status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
 579                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
 580                         status = l.out.result;
 581                 }
 582                 if (!NT_STATUS_IS_OK(status)) {
 583                         r->out.error_string = talloc_asprintf(mem_ctx,
 584                                                               "SAMR LookupDomain failed: %s",
 585                                                               nt_errstr(status));
 586                         talloc_free(tmp_ctx);
 587                         return status;
 588                 }
 589                 connect_with_info->out.domain_sid = *l.out.sid;
 590         }
 591
 592         /* prepare samr_OpenDomain */
 593         ZERO_STRUCT(d_handle);
 594         od.in.connect_handle = &p_handle;
 595         od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 596         od.in.sid = connect_with_info->out.domain_sid;
 597         od.out.domain_handle = &d_handle;
 598
 599         /* do a samr_OpenDomain to get a domain handle */
 600         status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
 601         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
 602                 status = od.out.result;
 603         }
 604         if (!NT_STATUS_IS_OK(status)) {
 605                 r->out.error_string = talloc_asprintf(mem_ctx,
 606                                                       "samr_OpenDomain for [%s] failed: %s",
 607                                                       dom_sid_string(tmp_ctx, connect_with_info->out.domain_sid),
 608                                                       nt_errstr(status));
 609                 talloc_free(tmp_ctx);
 610                 return status;
 611         }
 612
 613         /* prepare samr_CreateUser2 */
 614         ZERO_STRUCTP(u_handle);
 615         cu.in.domain_handle  = &d_handle;
 616         cu.in.access_mask     = SEC_FLAG_MAXIMUM_ALLOWED;
 617         samr_account_name.string = r->in.account_name;
 618         cu.in.account_name    = &samr_account_name;
 619         cu.in.acct_flags      = r->in.acct_type;
 620         cu.out.user_handle    = u_handle;
 621         cu.out.rid            = &rid;
 622         cu.out.access_granted = &access_granted;
 623
 624         /* do a samr_CreateUser2 to get an account handle, or an error */
 625         cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
 626         if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
 627                 cu_status = cu.out.result;
 628         }
 629         status = cu_status;
 630         if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
 631                 /* prepare samr_LookupNames */
 632                 ln.in.domain_handle = &d_handle;
 633                 ln.in.num_names = 1;
 634                 ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
 635                 ln.out.rids = &rids;
 636                 ln.out.types = &types;
 637                 if (!ln.in.names) {
 638                         r->out.error_string = NULL;
 639                         talloc_free(tmp_ctx);
 640                         return NT_STATUS_NO_MEMORY;
 641                 }
 642                 ln.in.names[0].string = r->in.account_name;
 643
 644                 /* 5. do a samr_LookupNames to get the users rid */
 645                 status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
 646                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
 647                         status = ln.out.result;
 648                 }
 649                 if (!NT_STATUS_IS_OK(status)) {
 650                         r->out.error_string = talloc_asprintf(mem_ctx,
 651                                                 "samr_LookupNames for [%s] failed: %s",
 652                                                 r->in.account_name,
 653                                                 nt_errstr(status));
 654                         talloc_free(tmp_ctx);
 655                         return status;
 656                 }
 657
 658                 /* check if we got one RID for the user */
 659                 if (ln.out.rids->count != 1) {
 660                         r->out.error_string = talloc_asprintf(mem_ctx,
 661                                                               "samr_LookupNames for [%s] returns %d RIDs",
 662                                                               r->in.account_name, ln.out.rids->count);
 663                         talloc_free(tmp_ctx);
 664                         return NT_STATUS_INVALID_PARAMETER;
 665                 }
 666
 667                 /* prepare samr_OpenUser */
 668                 ZERO_STRUCTP(u_handle);
 669                 ou.in.domain_handle = &d_handle;
 670                 ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 671                 ou.in.rid = ln.out.rids->ids[0];
 672                 rid = ou.in.rid;
 673                 ou.out.user_handle = u_handle;
 674
 675                 /* 6. do a samr_OpenUser to get a user handle */
 676                 status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
 677                 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
 678                         status = ou.out.result;
 679                 }
 680                 if (!NT_STATUS_IS_OK(status)) {
 681                         r->out.error_string = talloc_asprintf(mem_ctx,
 682                                                         "samr_OpenUser for [%s] failed: %s",
 683                                                         r->in.account_name,
 684                                                         nt_errstr(status));
 685                         talloc_free(tmp_ctx);
 686                         return status;
 687                 }
 688
 689                 if (r->in.recreate_account) {
 690                         struct samr_DeleteUser d;
 691                         d.in.user_handle = u_handle;
 692                         d.out.user_handle = u_handle;
 693                         status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
 694                         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
 695                                 status = d.out.result;
 696                         }
 697                         if (!NT_STATUS_IS_OK(status)) {
 698                                 r->out.error_string = talloc_asprintf(mem_ctx,
 699                                                                       "samr_DeleteUser (for recreate) of [%s] failed: %s",
 700                                                                       r->in.account_name,
 701                                                                       nt_errstr(status));
 702                                 talloc_free(tmp_ctx);
 703                                 return status;
 704                         }
 705
 706                         /* We want to recreate, so delete and another samr_CreateUser2 */
 707
 708                         /* &cu filled in above */
 709                         status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
 710                         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
 711                                 status = cu.out.result;
 712                         }
 713                         if (!NT_STATUS_IS_OK(status)) {
 714                                 r->out.error_string = talloc_asprintf(mem_ctx,
 715                                                                       "samr_CreateUser2 (recreate) for [%s] failed: %s",
 716                                                                       r->in.account_name, nt_errstr(status));
 717                                 talloc_free(tmp_ctx);
 718                                 return status;
 719                         }
 720                 }
 721         } else if (!NT_STATUS_IS_OK(status)) {
 722                 r->out.error_string = talloc_asprintf(mem_ctx,
 723                                                       "samr_CreateUser2 for [%s] failed: %s",
 724                                                       r->in.account_name, nt_errstr(status));
 725                 talloc_free(tmp_ctx);
 726                 return status;
 727         }
 728
 729         /* prepare samr_QueryUserInfo (get flags) */
 730         qui.in.user_handle = u_handle;
 731         qui.in.level = 16;
 732         qui.out.info = &uinfo;
 733
 734         status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
 735         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
 736                 status = qui.out.result;
 737         }
 738         if (!NT_STATUS_IS_OK(status)) {
 739                 r->out.error_string = talloc_asprintf(mem_ctx,
 740                                                 "samr_QueryUserInfo for [%s] failed: %s",
 741                                                 r->in.account_name,
 742                                                 nt_errstr(status));
 743                 talloc_free(tmp_ctx);
 744                 return status;
 745         }
 746
 747         if (!uinfo) {
 748                 status = NT_STATUS_INVALID_PARAMETER;
 749                 r->out.error_string
 750                         = talloc_asprintf(mem_ctx,
 751                                           "samr_QueryUserInfo failed to return qui.out.info for [%s]: %s",
 752                                           r->in.account_name, nt_errstr(status));
 753                 talloc_free(tmp_ctx);
 754                 return status;
 755         }
 756
 757         old_acct_flags = (uinfo->info16.acct_flags & (ACB_WSTRUST | ACB_SVRTRUST | ACB_DOMTRUST));
 758         /* Possibly bail if the account is of the wrong type */
 759         if (old_acct_flags
 760             != r->in.acct_type) {
 761                 const char *old_account_type, *new_account_type;
 762                 switch (old_acct_flags) {
 763                 case ACB_WSTRUST:
 764                         old_account_type = "domain member (member)";
 765                         break;
 766                 case ACB_SVRTRUST:
 767                         old_account_type = "domain controller (bdc)";
 768                         break;
 769                 case ACB_DOMTRUST:
 770                         old_account_type = "trusted domain";
 771                         break;
 772                 default:
 773                         return NT_STATUS_INVALID_PARAMETER;
 774                 }
 775                 switch (r->in.acct_type) {
 776                 case ACB_WSTRUST:
 777                         new_account_type = "domain member (member)";
 778                         break;
 779                 case ACB_SVRTRUST:
 780                         new_account_type = "domain controller (bdc)";
 781                         break;
 782                 case ACB_DOMTRUST:
 783                         new_account_type = "trusted domain";
 784                         break;
 785                 default:
 786                         return NT_STATUS_INVALID_PARAMETER;
 787                 }
 788
 789                 if (!NT_STATUS_EQUAL(cu_status, NT_STATUS_USER_EXISTS)) {
 790                         /* We created a new user, but they didn't come out the right type?!? */
 791                         r->out.error_string
 792                                 = talloc_asprintf(mem_ctx,
 793                                                   "We asked to create a new machine account (%s) of type %s, "
 794                                                   "but we got an account of type %s.  This is unexpected.  "
 795                                                   "Perhaps delete the account and try again.",
 796                                                   r->in.account_name, new_account_type, old_account_type);
 797                         talloc_free(tmp_ctx);
 798                         return NT_STATUS_INVALID_PARAMETER;
 799                 } else {
 800                         /* The account is of the wrong type, so bail */
 801
 802                         /* TODO: We should allow a --force option to override, and redo this from the top setting r.in.recreate_account */
 803                         r->out.error_string
 804                                 = talloc_asprintf(mem_ctx,
 805                                                   "The machine account (%s) already exists in the domain %s, "
 806                                                   "but is a %s.  You asked to join as a %s.  Please delete "
 807                                                   "the account and try again.",
 808                                                   r->in.account_name, connect_with_info->out.domain_name, old_account_type, new_account_type);
 809                         talloc_free(tmp_ctx);
 810                         return NT_STATUS_USER_EXISTS;
 811                 }
 812         } else {
 813                 acct_flags = uinfo->info16.acct_flags;
 814         }
 815
 816         acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
 817
 818         /* Find out what password policy this user has */
 819         pwp.in.user_handle = u_handle;
 820         pwp.out.info = &info;
 821
 822         status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
 823         if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
 824                 status = pwp.out.result;
 825         }
 826         if (NT_STATUS_IS_OK(status)) {
 827                 policy_min_pw_len = pwp.out.info->min_password_length;
 828         }
 829
 830         /* Grab a password of that minimum length */
 831
 832         password_str = generate_random_password(tmp_ctx, MAX(8, policy_min_pw_len), 255);
 833
 834         /* set full_name and reset flags */
 835         ZERO_STRUCT(u_info21);
 836         u_info21.full_name.string       = r->in.account_name;
 837         u_info21.acct_flags             = acct_flags;
 838         u_info21.fields_present         = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
 839
 840         r2.samr_handle.level            = LIBNET_SET_PASSWORD_SAMR_HANDLE;
 841         r2.samr_handle.in.account_name  = r->in.account_name;
 842         r2.samr_handle.in.newpassword   = password_str;
 843         r2.samr_handle.in.user_handle   = u_handle;
 844         r2.samr_handle.in.dcerpc_pipe   = samr_pipe;
 845         r2.samr_handle.in.info21        = &u_info21;
 846
 847         status = libnet_SetPassword(ctx, tmp_ctx, &r2);
 848         if (!NT_STATUS_IS_OK(status)) {
 849                 r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
 850                 talloc_free(tmp_ctx);
 851                 return status;
 852         }
 853
 854         account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
 855         if (!account_sid) {
 856                 r->out.error_string = NULL;
 857                 talloc_free(tmp_ctx);
 858                 return NT_STATUS_NO_MEMORY;
 859         }
 860
 861         /* Finish out by pushing various bits of status data out for the caller to use */
 862         r->out.join_password = password_str;
 863         talloc_steal(mem_ctx, r->out.join_password);
 864
 865         r->out.domain_sid = connect_with_info->out.domain_sid;
 866         talloc_steal(mem_ctx, r->out.domain_sid);
 867
 868         r->out.account_sid = account_sid;
 869         talloc_steal(mem_ctx, r->out.account_sid);
 870
 871         r->out.domain_name = connect_with_info->out.domain_name;
 872         talloc_steal(mem_ctx, r->out.domain_name);
 873         r->out.realm = connect_with_info->out.realm;
 874         talloc_steal(mem_ctx, r->out.realm);
 875         r->out.samr_pipe = samr_pipe;
 876         talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
 877         r->out.samr_binding = samr_pipe->binding;
 878         talloc_steal(mem_ctx, r->out.samr_binding);
 879         r->out.user_handle = u_handle;
 880         talloc_steal(mem_ctx, u_handle);
 881         r->out.error_string = r2.samr_handle.out.error_string;
 882         talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
 883         r->out.kvno = 0;
 884         r->out.server_dn_str = NULL;
 885         talloc_free(tmp_ctx);
 886
 887         /* Now, if it was AD, then we want to start looking changing a
 888          * few more things.  Otherwise, we are done. */
 889         if (r->out.realm) {
 890                 status = libnet_JoinADSDomain(ctx, r);
 891                 return status;
 892         }
 893
 894         return status;
 895 }
 896
 897 static NTSTATUS libnet_Join_primary_domain(struct libnet_context *ctx,
 898                                            TALLOC_CTX *mem_ctx,
 899                                            struct libnet_Join *r)
 900 {
 901         NTSTATUS status;
 902         TALLOC_CTX *tmp_mem;
 903         struct libnet_JoinDomain *r2;
 904         struct provision_store_self_join_settings *set_secrets;
 905         uint32_t acct_type = 0;
 906         const char *account_name;
 907         const char *netbios_name;
 908         const char *error_string;
 909
 910         r->out.error_string = NULL;
 911
 912         tmp_mem = talloc_new(mem_ctx);
 913         if (!tmp_mem) {
 914                 return NT_STATUS_NO_MEMORY;
 915         }
 916
 917         r2 = talloc(tmp_mem, struct libnet_JoinDomain);
 918         if (!r2) {
 919                 r->out.error_string = NULL;
 920                 talloc_free(tmp_mem);
 921                 return NT_STATUS_NO_MEMORY;
 922         }
 923
 924         if (r->in.join_type == SEC_CHAN_BDC) {
 925                 acct_type = ACB_SVRTRUST;
 926         } else if (r->in.join_type == SEC_CHAN_WKSTA) {
 927                 acct_type = ACB_WSTRUST;
 928         } else {
 929                 r->out.error_string = NULL;
 930                 talloc_free(tmp_mem);
 931                 return NT_STATUS_INVALID_PARAMETER;
 932         }
 933
 934         if (r->in.netbios_name != NULL) {
 935                 netbios_name = r->in.netbios_name;
 936         } else {
 937                 netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
 938                 if (!netbios_name) {
 939                         r->out.error_string = NULL;
 940                         talloc_free(tmp_mem);
 941                         return NT_STATUS_NO_MEMORY;
 942                 }
 943         }
 944
 945         account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
 946         if (!account_name) {
 947                 r->out.error_string = NULL;
 948                 talloc_free(tmp_mem);
 949                 return NT_STATUS_NO_MEMORY;
 950         }
 951
 952         /*
 953          * join the domain
 954          */
 955         ZERO_STRUCTP(r2);
 956         r2->in.domain_name      = r->in.domain_name;
 957         r2->in.account_name     = account_name;
 958         r2->in.netbios_name     = netbios_name;
 959         r2->in.level            = LIBNET_JOINDOMAIN_AUTOMATIC;
 960         r2->in.acct_type        = acct_type;
 961         r2->in.recreate_account = false;
 962         status = libnet_JoinDomain(ctx, r2, r2);
 963         if (!NT_STATUS_IS_OK(status)) {
 964                 r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
 965                 talloc_free(tmp_mem);
 966                 return status;
 967         }
 968
 969         set_secrets = talloc(tmp_mem, struct provision_store_self_join_settings);
 970         if (!set_secrets) {
 971                 r->out.error_string = NULL;
 972                 talloc_free(tmp_mem);
 973                 return NT_STATUS_NO_MEMORY;
 974         }
 975
 976         ZERO_STRUCTP(set_secrets);
 977         set_secrets->domain_name = r2->out.domain_name;
 978         set_secrets->realm = r2->out.realm;
 979         set_secrets->netbios_name = netbios_name;
 980         set_secrets->secure_channel_type = r->in.join_type;
 981         set_secrets->machine_password = r2->out.join_password;
 982         set_secrets->key_version_number = r2->out.kvno;
 983         set_secrets->domain_sid = r2->out.domain_sid;
 984
 985         status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
 986         if (!NT_STATUS_IS_OK(status)) {
 987                 r->out.error_string = talloc_steal(mem_ctx, error_string);
 988                 talloc_free(tmp_mem);
 989                 return status;
 990         }
 991
 992         /* move all out parameter to the callers TALLOC_CTX */
 993         r->out.error_string     = NULL;
 994         r->out.join_password    = r2->out.join_password;
 995         talloc_reparent(r2, mem_ctx, r2->out.join_password);
 996         r->out.domain_sid       = r2->out.domain_sid;
 997         talloc_reparent(r2, mem_ctx, r2->out.domain_sid);
 998         r->out.domain_name      = r2->out.domain_name;
 999         talloc_reparent(r2, mem_ctx, r2->out.domain_name);
1000         talloc_free(tmp_mem);
1001         return NT_STATUS_OK;
1002 }
1003
1004 NTSTATUS libnet_Join(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_Join *r)
1005 {
1006         switch (r->in.join_type) {
1007                 case SEC_CHAN_WKSTA:
1008                         return libnet_Join_primary_domain(ctx, mem_ctx, r);
1009                 case SEC_CHAN_BDC:
1010                         return libnet_Join_primary_domain(ctx, mem_ctx, r);
1011                 case SEC_CHAN_DOMAIN:
1012                 case SEC_CHAN_DNS_DOMAIN:
1013                 case SEC_CHAN_NULL:
1014                         break;
1015         }
1016
1017         r->out.error_string = talloc_asprintf(mem_ctx,
1018                                               "Invalid join type specified (%08X) attempting to join domain %s",
1019                                               r->in.join_type, r->in.domain_name);
1020         return NT_STATUS_INVALID_PARAMETER;
1021 }