source3/rpc_client/cli_netlogon.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NT Domain Authentication SMB / MSRPC client
   4    Copyright (C) Andrew Tridgell 1992-2000
   5    Copyright (C) Jeremy Allison                    1998.
   6    Largely re-written by Jeremy Allison (C)        2005.
   7    Copyright (C) Guenther Deschner                 2008.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "system/filesys.h"
  25 #include "libsmb/libsmb.h"
  26 #include "rpc_client/rpc_client.h"
  27 #include "rpc_client/cli_pipe.h"
  28 #include "../libcli/auth/libcli_auth.h"
  29 #include "../libcli/auth/netlogon_creds_cli.h"
  30 #include "../librpc/gen_ndr/ndr_netlogon_c.h"
  31 #include "../librpc/gen_ndr/schannel.h"
  32 #include "rpc_client/cli_netlogon.h"
  33 #include "rpc_client/init_netlogon.h"
  34 #include "rpc_client/util_netlogon.h"
  35 #include "../libcli/security/security.h"
  36 #include "lib/param/param.h"
  37 #include "libcli/smb/smbXcli_base.h"
  38 #include "dbwrap/dbwrap.h"
  39 #include "dbwrap/dbwrap_open.h"
  40 #include "util_tdb.h"
  41
  42
  43 NTSTATUS rpccli_pre_open_netlogon_creds(void)
  44 {
  45         static bool already_open = false;
  46         TALLOC_CTX *frame;
  47         struct loadparm_context *lp_ctx;
  48         char *fname;
  49         struct db_context *global_db;
  50         NTSTATUS status;
  51
  52         if (already_open) {
  53                 return NT_STATUS_OK;
  54         }
  55
  56         frame = talloc_stackframe();
  57
  58         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
  59         if (lp_ctx == NULL) {
  60                 TALLOC_FREE(frame);
  61                 return NT_STATUS_NO_MEMORY;
  62         }
  63
  64         fname = lpcfg_private_db_path(frame, lp_ctx, "netlogon_creds_cli");
  65         if (fname == NULL) {
  66                 TALLOC_FREE(frame);
  67                 return NT_STATUS_NO_MEMORY;
  68         }
  69
  70         global_db = db_open(frame, fname,
  71                             0, TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
  72                             O_RDWR|O_CREAT, 0600, DBWRAP_LOCK_ORDER_2,
  73                             DBWRAP_FLAG_OPTIMIZE_READONLY_ACCESS);
  74         if (global_db == NULL) {
  75                 TALLOC_FREE(frame);
  76                 return NT_STATUS_NO_MEMORY;
  77         }
  78
  79         status = netlogon_creds_cli_set_global_db(&global_db);
  80         TALLOC_FREE(frame);
  81         if (!NT_STATUS_IS_OK(status)) {
  82                 return status;
  83         }
  84
  85         already_open = true;
  86         return NT_STATUS_OK;
  87 }
  88
  89 static NTSTATUS rpccli_create_netlogon_creds(
  90         const char *server_computer,
  91         const char *server_netbios_domain,
  92         const char *server_dns_domain,
  93         const char *client_account,
  94         enum netr_SchannelType sec_chan_type,
  95         struct messaging_context *msg_ctx,
  96         TALLOC_CTX *mem_ctx,
  97         struct netlogon_creds_cli_context **netlogon_creds)
  98 {
  99         TALLOC_CTX *frame = talloc_stackframe();
 100         struct loadparm_context *lp_ctx;
 101         NTSTATUS status;
 102
 103         status = rpccli_pre_open_netlogon_creds();
 104         if (!NT_STATUS_IS_OK(status)) {
 105                 TALLOC_FREE(frame);
 106                 return status;
 107         }
 108
 109         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
 110         if (lp_ctx == NULL) {
 111                 TALLOC_FREE(frame);
 112                 return NT_STATUS_NO_MEMORY;
 113         }
 114         status = netlogon_creds_cli_context_global(lp_ctx,
 115                                                    msg_ctx,
 116                                                    client_account,
 117                                                    sec_chan_type,
 118                                                    server_computer,
 119                                                    server_netbios_domain,
 120                                                    server_dns_domain,
 121                                                    mem_ctx, netlogon_creds);
 122         TALLOC_FREE(frame);
 123         if (!NT_STATUS_IS_OK(status)) {
 124                 return status;
 125         }
 126
 127         return NT_STATUS_OK;
 128 }
 129
 130 NTSTATUS rpccli_create_netlogon_creds_ctx(
 131         struct cli_credentials *creds,
 132         const char *server_computer,
 133         struct messaging_context *msg_ctx,
 134         TALLOC_CTX *mem_ctx,
 135         struct netlogon_creds_cli_context **creds_ctx)
 136 {
 137         enum netr_SchannelType sec_chan_type;
 138         const char *server_netbios_domain;
 139         const char *server_dns_domain;
 140         const char *client_account;
 141
 142         sec_chan_type = cli_credentials_get_secure_channel_type(creds);
 143         client_account = cli_credentials_get_username(creds);
 144         server_netbios_domain = cli_credentials_get_domain(creds);
 145         server_dns_domain = cli_credentials_get_realm(creds);
 146
 147         return rpccli_create_netlogon_creds(server_computer,
 148                                             server_netbios_domain,
 149                                             server_dns_domain,
 150                                             client_account,
 151                                             sec_chan_type,
 152                                             msg_ctx, mem_ctx,
 153                                             creds_ctx);
 154 }
 155
 156 NTSTATUS rpccli_setup_netlogon_creds_locked(
 157         struct cli_state *cli,
 158         enum dcerpc_transport_t transport,
 159         struct netlogon_creds_cli_context *creds_ctx,
 160         bool force_reauth,
 161         struct cli_credentials *cli_creds,
 162         uint32_t *negotiate_flags)
 163 {
 164         TALLOC_CTX *frame = talloc_stackframe();
 165         struct rpc_pipe_client *netlogon_pipe = NULL;
 166         struct netlogon_creds_CredentialState *creds = NULL;
 167         uint8_t num_nt_hashes = 0;
 168         const struct samr_Password *nt_hashes[2] = { NULL, NULL };
 169         uint8_t idx_nt_hashes = 0;
 170         NTSTATUS status;
 171
 172         status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
 173         if (NT_STATUS_IS_OK(status)) {
 174                 const char *action = "using";
 175
 176                 if (force_reauth) {
 177                         action = "overwrite";
 178                 }
 179
 180                 DEBUG(5,("%s: %s cached netlogon_creds cli[%s/%s] to %s\n",
 181                          __FUNCTION__, action,
 182                          creds->account_name, creds->computer_name,
 183                          smbXcli_conn_remote_name(cli->conn)));
 184                 if (!force_reauth) {
 185                         goto done;
 186                 }
 187                 TALLOC_FREE(creds);
 188         }
 189
 190         nt_hashes[0] = cli_credentials_get_nt_hash(cli_creds, talloc_tos());
 191         if (nt_hashes[0] == NULL) {
 192                 TALLOC_FREE(frame);
 193                 return NT_STATUS_NO_MEMORY;
 194         }
 195         num_nt_hashes = 1;
 196
 197         nt_hashes[1] = cli_credentials_get_old_nt_hash(cli_creds,
 198                                                        talloc_tos());
 199         if (nt_hashes[1] != NULL) {
 200                 num_nt_hashes = 2;
 201         }
 202
 203         status = cli_rpc_pipe_open_noauth_transport(cli,
 204                                                     transport,
 205                                                     &ndr_table_netlogon,
 206                                                     &netlogon_pipe);
 207         if (!NT_STATUS_IS_OK(status)) {
 208                 DEBUG(5,("%s: failed to open noauth netlogon connection to %s - %s\n",
 209                          __FUNCTION__,
 210                          smbXcli_conn_remote_name(cli->conn),
 211                          nt_errstr(status)));
 212                 TALLOC_FREE(frame);
 213                 return status;
 214         }
 215         talloc_steal(frame, netlogon_pipe);
 216
 217         status = netlogon_creds_cli_auth(creds_ctx,
 218                                          netlogon_pipe->binding_handle,
 219                                          num_nt_hashes,
 220                                          nt_hashes,
 221                                          &idx_nt_hashes);
 222         if (!NT_STATUS_IS_OK(status)) {
 223                 TALLOC_FREE(frame);
 224                 return status;
 225         }
 226
 227         status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
 228         if (!NT_STATUS_IS_OK(status)) {
 229                 TALLOC_FREE(frame);
 230                 return NT_STATUS_INTERNAL_ERROR;
 231         }
 232
 233         DEBUG(5,("%s: using new netlogon_creds cli[%s/%s] to %s\n",
 234                  __FUNCTION__,
 235                  creds->account_name, creds->computer_name,
 236                  smbXcli_conn_remote_name(cli->conn)));
 237
 238 done:
 239         if (negotiate_flags != NULL) {
 240                 *negotiate_flags = creds->negotiate_flags;
 241         }
 242
 243         TALLOC_FREE(frame);
 244         return NT_STATUS_OK;
 245 }
 246
 247 NTSTATUS rpccli_setup_netlogon_creds(
 248         struct cli_state *cli,
 249         enum dcerpc_transport_t transport,
 250         struct netlogon_creds_cli_context *creds_ctx,
 251         bool force_reauth,
 252         struct cli_credentials *cli_creds)
 253 {
 254         TALLOC_CTX *frame = talloc_stackframe();
 255         struct netlogon_creds_cli_lck *lck;
 256         NTSTATUS status;
 257
 258         status = netlogon_creds_cli_lck(
 259                 creds_ctx, NETLOGON_CREDS_CLI_LCK_EXCLUSIVE,
 260                 frame, &lck);
 261         if (!NT_STATUS_IS_OK(status)) {
 262                 DBG_WARNING("netlogon_creds_cli_lck failed: %s\n",
 263                             nt_errstr(status));
 264                 TALLOC_FREE(frame);
 265                 return status;
 266         }
 267
 268         status = rpccli_setup_netlogon_creds_locked(
 269                 cli, transport, creds_ctx, force_reauth, cli_creds, NULL);
 270
 271         TALLOC_FREE(frame);
 272
 273         return status;
 274 }
 275
 276 static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
 277                                         uint16_t validation_level,
 278                                         union netr_Validation *validation,
 279                                         struct netr_SamInfo3 **info3_p)
 280 {
 281         struct netr_SamInfo3 *info3;
 282         NTSTATUS status;
 283
 284         if (validation == NULL) {
 285                 return NT_STATUS_INVALID_PARAMETER;
 286         }
 287
 288         switch (validation_level) {
 289         case 3:
 290                 if (validation->sam3 == NULL) {
 291                         return NT_STATUS_INVALID_PARAMETER;
 292                 }
 293
 294                 info3 = talloc_move(mem_ctx, &validation->sam3);
 295                 break;
 296         case 6:
 297                 if (validation->sam6 == NULL) {
 298                         return NT_STATUS_INVALID_PARAMETER;
 299                 }
 300
 301                 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 302                 if (info3 == NULL) {
 303                         return NT_STATUS_NO_MEMORY;
 304                 }
 305                 status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
 306                 if (!NT_STATUS_IS_OK(status)) {
 307                         TALLOC_FREE(info3);
 308                         return status;
 309                 }
 310
 311                 info3->sidcount = validation->sam6->sidcount;
 312                 info3->sids = talloc_move(info3, &validation->sam6->sids);
 313                 break;
 314         default:
 315                 return NT_STATUS_BAD_VALIDATION_CLASS;
 316         }
 317
 318         *info3_p = info3;
 319
 320         return NT_STATUS_OK;
 321 }
 322
 323 /* Logon domain user */
 324
 325 NTSTATUS rpccli_netlogon_password_logon(
 326         struct netlogon_creds_cli_context *creds_ctx,
 327         struct dcerpc_binding_handle *binding_handle,
 328         TALLOC_CTX *mem_ctx,
 329         uint32_t logon_parameters,
 330         const char *domain,
 331         const char *username,
 332         const char *password,
 333         const char *workstation,
 334         enum netr_LogonInfoClass logon_type,
 335         uint8_t *authoritative,
 336         uint32_t *flags,
 337         struct netr_SamInfo3 **info3)
 338 {
 339         TALLOC_CTX *frame = talloc_stackframe();
 340         NTSTATUS status;
 341         union netr_LogonLevel *logon;
 342         uint16_t validation_level = 0;
 343         union netr_Validation *validation = NULL;
 344         char *workstation_slash = NULL;
 345
 346         logon = talloc_zero(frame, union netr_LogonLevel);
 347         if (logon == NULL) {
 348                 TALLOC_FREE(frame);
 349                 return NT_STATUS_NO_MEMORY;
 350         }
 351
 352         if (workstation == NULL) {
 353                 workstation = lp_netbios_name();
 354         }
 355
 356         workstation_slash = talloc_asprintf(frame, "\\\\%s", workstation);
 357         if (workstation_slash == NULL) {
 358                 TALLOC_FREE(frame);
 359                 return NT_STATUS_NO_MEMORY;
 360         }
 361
 362         /* Initialise input parameters */
 363
 364         switch (logon_type) {
 365         case NetlogonInteractiveInformation: {
 366
 367                 struct netr_PasswordInfo *password_info;
 368
 369                 struct samr_Password lmpassword;
 370                 struct samr_Password ntpassword;
 371
 372                 password_info = talloc_zero(frame, struct netr_PasswordInfo);
 373                 if (password_info == NULL) {
 374                         TALLOC_FREE(frame);
 375                         return NT_STATUS_NO_MEMORY;
 376                 }
 377
 378                 nt_lm_owf_gen(password, ntpassword.hash, lmpassword.hash);
 379
 380                 password_info->identity_info.domain_name.string         = domain;
 381                 password_info->identity_info.parameter_control          = logon_parameters;
 382                 password_info->identity_info.logon_id_low               = 0xdead;
 383                 password_info->identity_info.logon_id_high              = 0xbeef;
 384                 password_info->identity_info.account_name.string        = username;
 385                 password_info->identity_info.workstation.string         = workstation_slash;
 386
 387                 password_info->lmpassword = lmpassword;
 388                 password_info->ntpassword = ntpassword;
 389
 390                 logon->password = password_info;
 391
 392                 break;
 393         }
 394         case NetlogonNetworkInformation: {
 395                 struct netr_NetworkInfo *network_info;
 396                 uint8_t chal[8];
 397                 unsigned char local_lm_response[24];
 398                 unsigned char local_nt_response[24];
 399                 struct netr_ChallengeResponse lm;
 400                 struct netr_ChallengeResponse nt;
 401
 402                 ZERO_STRUCT(lm);
 403                 ZERO_STRUCT(nt);
 404
 405                 network_info = talloc_zero(frame, struct netr_NetworkInfo);
 406                 if (network_info == NULL) {
 407                         TALLOC_FREE(frame);
 408                         return NT_STATUS_NO_MEMORY;
 409                 }
 410
 411                 generate_random_buffer(chal, 8);
 412
 413                 SMBencrypt(password, chal, local_lm_response);
 414                 SMBNTencrypt(password, chal, local_nt_response);
 415
 416                 lm.length = 24;
 417                 lm.data = local_lm_response;
 418
 419                 nt.length = 24;
 420                 nt.data = local_nt_response;
 421
 422                 network_info->identity_info.domain_name.string          = domain;
 423                 network_info->identity_info.parameter_control           = logon_parameters;
 424                 network_info->identity_info.logon_id_low                = 0xdead;
 425                 network_info->identity_info.logon_id_high               = 0xbeef;
 426                 network_info->identity_info.account_name.string         = username;
 427                 network_info->identity_info.workstation.string          = workstation_slash;
 428
 429                 memcpy(network_info->challenge, chal, 8);
 430                 network_info->nt = nt;
 431                 network_info->lm = lm;
 432
 433                 logon->network = network_info;
 434
 435                 break;
 436         }
 437         default:
 438                 DEBUG(0, ("switch value %d not supported\n",
 439                         logon_type));
 440                 TALLOC_FREE(frame);
 441                 return NT_STATUS_INVALID_INFO_CLASS;
 442         }
 443
 444         status = netlogon_creds_cli_LogonSamLogon(creds_ctx,
 445                                                   binding_handle,
 446                                                   logon_type,
 447                                                   logon,
 448                                                   frame,
 449                                                   &validation_level,
 450                                                   &validation,
 451                                                   authoritative,
 452                                                   flags);
 453         if (!NT_STATUS_IS_OK(status)) {
 454                 TALLOC_FREE(frame);
 455                 return status;
 456         }
 457
 458         status = map_validation_to_info3(mem_ctx,
 459                                          validation_level, validation,
 460                                          info3);
 461         TALLOC_FREE(frame);
 462         if (!NT_STATUS_IS_OK(status)) {
 463                 return status;
 464         }
 465
 466
 467         return NT_STATUS_OK;
 468 }
 469
 470 /**
 471  * Logon domain user with an 'network' SAM logon
 472  *
 473  * @param info3 Pointer to a NET_USER_INFO_3 already allocated by the caller.
 474  **/
 475
 476
 477 NTSTATUS rpccli_netlogon_network_logon(
 478         struct netlogon_creds_cli_context *creds_ctx,
 479         struct dcerpc_binding_handle *binding_handle,
 480         TALLOC_CTX *mem_ctx,
 481         uint32_t logon_parameters,
 482         const char *username,
 483         const char *domain,
 484         const char *workstation,
 485         const uint8_t chal[8],
 486         DATA_BLOB lm_response,
 487         DATA_BLOB nt_response,
 488         uint8_t *authoritative,
 489         uint32_t *flags,
 490         struct netr_SamInfo3 **info3)
 491 {
 492         NTSTATUS status;
 493         const char *workstation_name_slash;
 494         union netr_LogonLevel *logon = NULL;
 495         struct netr_NetworkInfo *network_info;
 496         uint16_t validation_level = 0;
 497         union netr_Validation *validation = NULL;
 498         struct netr_ChallengeResponse lm;
 499         struct netr_ChallengeResponse nt;
 500
 501         *info3 = NULL;
 502
 503         ZERO_STRUCT(lm);
 504         ZERO_STRUCT(nt);
 505
 506         logon = talloc_zero(mem_ctx, union netr_LogonLevel);
 507         if (!logon) {
 508                 return NT_STATUS_NO_MEMORY;
 509         }
 510
 511         network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
 512         if (!network_info) {
 513                 return NT_STATUS_NO_MEMORY;
 514         }
 515
 516         if (workstation[0] != '\\' && workstation[1] != '\\') {
 517                 workstation_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", workstation);
 518         } else {
 519                 workstation_name_slash = workstation;
 520         }
 521
 522         if (!workstation_name_slash) {
 523                 DEBUG(0, ("talloc_asprintf failed!\n"));
 524                 return NT_STATUS_NO_MEMORY;
 525         }
 526
 527         /* Initialise input parameters */
 528
 529         lm.data = lm_response.data;
 530         lm.length = lm_response.length;
 531         nt.data = nt_response.data;
 532         nt.length = nt_response.length;
 533
 534         network_info->identity_info.domain_name.string          = domain;
 535         network_info->identity_info.parameter_control           = logon_parameters;
 536         network_info->identity_info.logon_id_low                = 0xdead;
 537         network_info->identity_info.logon_id_high               = 0xbeef;
 538         network_info->identity_info.account_name.string         = username;
 539         network_info->identity_info.workstation.string          = workstation_name_slash;
 540
 541         memcpy(network_info->challenge, chal, 8);
 542         network_info->nt = nt;
 543         network_info->lm = lm;
 544
 545         logon->network = network_info;
 546
 547         /* Marshall data and send request */
 548
 549         status = netlogon_creds_cli_LogonSamLogon(creds_ctx,
 550                                                   binding_handle,
 551                                                   NetlogonNetworkInformation,
 552                                                   logon,
 553                                                   mem_ctx,
 554                                                   &validation_level,
 555                                                   &validation,
 556                                                   authoritative,
 557                                                   flags);
 558         if (!NT_STATUS_IS_OK(status)) {
 559                 return status;
 560         }
 561
 562         status = map_validation_to_info3(mem_ctx,
 563                                          validation_level, validation,
 564                                          info3);
 565         if (!NT_STATUS_IS_OK(status)) {
 566                 return status;
 567         }
 568
 569         return NT_STATUS_OK;
 570 }