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 **netlogon_creds)
 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         if (sec_chan_type == SEC_CHAN_NULL) {
 144                 return NT_STATUS_INVALID_PARAMETER_MIX;
 145         }
 146
 147         client_account = cli_credentials_get_username(creds);
 148         server_netbios_domain = cli_credentials_get_domain(creds);
 149         server_dns_domain = cli_credentials_get_realm(creds);
 150
 151         return rpccli_create_netlogon_creds(server_computer,
 152                                             server_netbios_domain,
 153                                             server_dns_domain,
 154                                             client_account,
 155                                             sec_chan_type,
 156                                             msg_ctx, mem_ctx,
 157                                             netlogon_creds);
 158 }
 159
 160 static NTSTATUS rpccli_setup_netlogon_creds(
 161         struct cli_state *cli,
 162         enum dcerpc_transport_t transport,
 163         struct netlogon_creds_cli_context *netlogon_creds,
 164         bool force_reauth,
 165         struct samr_Password current_nt_hash,
 166         const struct samr_Password *previous_nt_hash)
 167 {
 168         TALLOC_CTX *frame = talloc_stackframe();
 169         struct rpc_pipe_client *netlogon_pipe = NULL;
 170         struct netlogon_creds_CredentialState *creds = NULL;
 171         uint8_t num_nt_hashes = 0;
 172         const struct samr_Password *nt_hashes[2] = { NULL, NULL };
 173         uint8_t idx_nt_hashes = 0;
 174         NTSTATUS status;
 175
 176         status = netlogon_creds_cli_get(netlogon_creds,
 177                                         frame, &creds);
 178         if (NT_STATUS_IS_OK(status)) {
 179                 const char *action = "using";
 180
 181                 if (force_reauth) {
 182                         action = "overwrite";
 183                 }
 184
 185                 DEBUG(5,("%s: %s cached netlogon_creds cli[%s/%s] to %s\n",
 186                          __FUNCTION__, action,
 187                          creds->account_name, creds->computer_name,
 188                          smbXcli_conn_remote_name(cli->conn)));
 189                 if (!force_reauth) {
 190                         TALLOC_FREE(frame);
 191                         return NT_STATUS_OK;
 192                 }
 193                 TALLOC_FREE(creds);
 194         }
 195
 196         status = cli_rpc_pipe_open_noauth_transport(cli,
 197                                                     transport,
 198                                                     &ndr_table_netlogon,
 199                                                     &netlogon_pipe);
 200         if (!NT_STATUS_IS_OK(status)) {
 201                 DEBUG(5,("%s: failed to open noauth netlogon connection to %s - %s\n",
 202                          __FUNCTION__,
 203                          smbXcli_conn_remote_name(cli->conn),
 204                          nt_errstr(status)));
 205                 TALLOC_FREE(frame);
 206                 return status;
 207         }
 208         talloc_steal(frame, netlogon_pipe);
 209
 210         nt_hashes[0] = &current_nt_hash;
 211         num_nt_hashes = 1;
 212         if (previous_nt_hash != NULL) {
 213                 nt_hashes[1] = previous_nt_hash;
 214                 num_nt_hashes = 2;
 215         }
 216
 217         status = netlogon_creds_cli_auth(netlogon_creds,
 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(netlogon_creds,
 228                                         frame, &creds);
 229         if (!NT_STATUS_IS_OK(status)) {
 230                 TALLOC_FREE(frame);
 231                 return NT_STATUS_INTERNAL_ERROR;
 232         }
 233
 234         DEBUG(5,("%s: using new netlogon_creds cli[%s/%s] to %s\n",
 235                  __FUNCTION__,
 236                  creds->account_name, creds->computer_name,
 237                  smbXcli_conn_remote_name(cli->conn)));
 238
 239         TALLOC_FREE(frame);
 240         return NT_STATUS_OK;
 241 }
 242
 243 NTSTATUS rpccli_setup_netlogon_creds_with_creds(struct cli_state *cli,
 244                                                 enum dcerpc_transport_t transport,
 245                                                 struct netlogon_creds_cli_context *netlogon_creds,
 246                                                 bool force_reauth,
 247                                                 struct cli_credentials *creds)
 248 {
 249         struct samr_Password *current_nt_hash = NULL;
 250         struct samr_Password *previous_nt_hash = NULL;
 251         NTSTATUS status;
 252
 253         current_nt_hash = cli_credentials_get_nt_hash(creds, talloc_tos());
 254         if (current_nt_hash == NULL) {
 255                 return NT_STATUS_NO_MEMORY;
 256         }
 257
 258         previous_nt_hash = cli_credentials_get_old_nt_hash(creds, talloc_tos());
 259
 260         status = rpccli_setup_netlogon_creds(cli, transport,
 261                                              netlogon_creds,
 262                                              force_reauth,
 263                                              *current_nt_hash,
 264                                              previous_nt_hash);
 265         TALLOC_FREE(current_nt_hash);
 266         TALLOC_FREE(previous_nt_hash);
 267         if (!NT_STATUS_IS_OK(status)) {
 268                 return status;
 269         }
 270
 271         return NT_STATUS_OK;
 272 }
 273
 274 static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
 275                                         uint16_t validation_level,
 276                                         union netr_Validation *validation,
 277                                         struct netr_SamInfo3 **info3_p)
 278 {
 279         struct netr_SamInfo3 *info3;
 280         NTSTATUS status;
 281
 282         if (validation == NULL) {
 283                 return NT_STATUS_INVALID_PARAMETER;
 284         }
 285
 286         switch (validation_level) {
 287         case 3:
 288                 if (validation->sam3 == NULL) {
 289                         return NT_STATUS_INVALID_PARAMETER;
 290                 }
 291
 292                 info3 = talloc_move(mem_ctx, &validation->sam3);
 293                 break;
 294         case 6:
 295                 if (validation->sam6 == NULL) {
 296                         return NT_STATUS_INVALID_PARAMETER;
 297                 }
 298
 299                 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 300                 if (info3 == NULL) {
 301                         return NT_STATUS_NO_MEMORY;
 302                 }
 303                 status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
 304                 if (!NT_STATUS_IS_OK(status)) {
 305                         TALLOC_FREE(info3);
 306                         return status;
 307                 }
 308
 309                 info3->sidcount = validation->sam6->sidcount;
 310                 info3->sids = talloc_move(info3, &validation->sam6->sids);
 311                 break;
 312         default:
 313                 return NT_STATUS_BAD_VALIDATION_CLASS;
 314         }
 315
 316         *info3_p = info3;
 317
 318         return NT_STATUS_OK;
 319 }
 320
 321 /* Logon domain user */
 322
 323 NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds,
 324                                         struct dcerpc_binding_handle *binding_handle,
 325                                         TALLOC_CTX *mem_ctx,
 326                                         uint32_t logon_parameters,
 327                                         const char *domain,
 328                                         const char *username,
 329                                         const char *password,
 330                                         const char *workstation,
 331                                         enum netr_LogonInfoClass logon_type,
 332                                         uint8_t *authoritative,
 333                                         uint32_t *flags,
 334                                         struct netr_SamInfo3 **info3)
 335 {
 336         TALLOC_CTX *frame = talloc_stackframe();
 337         NTSTATUS status;
 338         union netr_LogonLevel *logon;
 339         uint16_t validation_level = 0;
 340         union netr_Validation *validation = NULL;
 341         char *workstation_slash = NULL;
 342
 343         logon = talloc_zero(frame, union netr_LogonLevel);
 344         if (logon == NULL) {
 345                 TALLOC_FREE(frame);
 346                 return NT_STATUS_NO_MEMORY;
 347         }
 348
 349         if (workstation == NULL) {
 350                 workstation = lp_netbios_name();
 351         }
 352
 353         workstation_slash = talloc_asprintf(frame, "\\\\%s", workstation);
 354         if (workstation_slash == NULL) {
 355                 TALLOC_FREE(frame);
 356                 return NT_STATUS_NO_MEMORY;
 357         }
 358
 359         /* Initialise input parameters */
 360
 361         switch (logon_type) {
 362         case NetlogonInteractiveInformation: {
 363
 364                 struct netr_PasswordInfo *password_info;
 365
 366                 struct samr_Password lmpassword;
 367                 struct samr_Password ntpassword;
 368
 369                 password_info = talloc_zero(frame, struct netr_PasswordInfo);
 370                 if (password_info == NULL) {
 371                         TALLOC_FREE(frame);
 372                         return NT_STATUS_NO_MEMORY;
 373                 }
 374
 375                 nt_lm_owf_gen(password, ntpassword.hash, lmpassword.hash);
 376
 377                 password_info->identity_info.domain_name.string         = domain;
 378                 password_info->identity_info.parameter_control          = logon_parameters;
 379                 password_info->identity_info.logon_id_low               = 0xdead;
 380                 password_info->identity_info.logon_id_high              = 0xbeef;
 381                 password_info->identity_info.account_name.string        = username;
 382                 password_info->identity_info.workstation.string         = workstation_slash;
 383
 384                 password_info->lmpassword = lmpassword;
 385                 password_info->ntpassword = ntpassword;
 386
 387                 logon->password = password_info;
 388
 389                 break;
 390         }
 391         case NetlogonNetworkInformation: {
 392                 struct netr_NetworkInfo *network_info;
 393                 uint8_t chal[8];
 394                 unsigned char local_lm_response[24];
 395                 unsigned char local_nt_response[24];
 396                 struct netr_ChallengeResponse lm;
 397                 struct netr_ChallengeResponse nt;
 398
 399                 ZERO_STRUCT(lm);
 400                 ZERO_STRUCT(nt);
 401
 402                 network_info = talloc_zero(frame, struct netr_NetworkInfo);
 403                 if (network_info == NULL) {
 404                         TALLOC_FREE(frame);
 405                         return NT_STATUS_NO_MEMORY;
 406                 }
 407
 408                 generate_random_buffer(chal, 8);
 409
 410                 SMBencrypt(password, chal, local_lm_response);
 411                 SMBNTencrypt(password, chal, local_nt_response);
 412
 413                 lm.length = 24;
 414                 lm.data = local_lm_response;
 415
 416                 nt.length = 24;
 417                 nt.data = local_nt_response;
 418
 419                 network_info->identity_info.domain_name.string          = domain;
 420                 network_info->identity_info.parameter_control           = logon_parameters;
 421                 network_info->identity_info.logon_id_low                = 0xdead;
 422                 network_info->identity_info.logon_id_high               = 0xbeef;
 423                 network_info->identity_info.account_name.string         = username;
 424                 network_info->identity_info.workstation.string          = workstation_slash;
 425
 426                 memcpy(network_info->challenge, chal, 8);
 427                 network_info->nt = nt;
 428                 network_info->lm = lm;
 429
 430                 logon->network = network_info;
 431
 432                 break;
 433         }
 434         default:
 435                 DEBUG(0, ("switch value %d not supported\n",
 436                         logon_type));
 437                 TALLOC_FREE(frame);
 438                 return NT_STATUS_INVALID_INFO_CLASS;
 439         }
 440
 441         status = netlogon_creds_cli_LogonSamLogon(creds,
 442                                                   binding_handle,
 443                                                   logon_type,
 444                                                   logon,
 445                                                   frame,
 446                                                   &validation_level,
 447                                                   &validation,
 448                                                   authoritative,
 449                                                   flags);
 450         if (!NT_STATUS_IS_OK(status)) {
 451                 TALLOC_FREE(frame);
 452                 return status;
 453         }
 454
 455         status = map_validation_to_info3(mem_ctx,
 456                                          validation_level, validation,
 457                                          info3);
 458         TALLOC_FREE(frame);
 459         if (!NT_STATUS_IS_OK(status)) {
 460                 return status;
 461         }
 462
 463
 464         return NT_STATUS_OK;
 465 }
 466
 467 /**
 468  * Logon domain user with an 'network' SAM logon
 469  *
 470  * @param info3 Pointer to a NET_USER_INFO_3 already allocated by the caller.
 471  **/
 472
 473
 474 NTSTATUS rpccli_netlogon_network_logon(struct netlogon_creds_cli_context *creds,
 475                                        struct dcerpc_binding_handle *binding_handle,
 476                                        TALLOC_CTX *mem_ctx,
 477                                        uint32_t logon_parameters,
 478                                        const char *username,
 479                                        const char *domain,
 480                                        const char *workstation,
 481                                        const uint8_t chal[8],
 482                                        DATA_BLOB lm_response,
 483                                        DATA_BLOB nt_response,
 484                                        uint8_t *authoritative,
 485                                        uint32_t *flags,
 486                                        struct netr_SamInfo3 **info3)
 487 {
 488         NTSTATUS status;
 489         const char *workstation_name_slash;
 490         union netr_LogonLevel *logon = NULL;
 491         struct netr_NetworkInfo *network_info;
 492         uint16_t validation_level = 0;
 493         union netr_Validation *validation = NULL;
 494         struct netr_ChallengeResponse lm;
 495         struct netr_ChallengeResponse nt;
 496
 497         *info3 = NULL;
 498
 499         ZERO_STRUCT(lm);
 500         ZERO_STRUCT(nt);
 501
 502         logon = talloc_zero(mem_ctx, union netr_LogonLevel);
 503         if (!logon) {
 504                 return NT_STATUS_NO_MEMORY;
 505         }
 506
 507         network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
 508         if (!network_info) {
 509                 return NT_STATUS_NO_MEMORY;
 510         }
 511
 512         if (workstation[0] != '\\' && workstation[1] != '\\') {
 513                 workstation_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", workstation);
 514         } else {
 515                 workstation_name_slash = workstation;
 516         }
 517
 518         if (!workstation_name_slash) {
 519                 DEBUG(0, ("talloc_asprintf failed!\n"));
 520                 return NT_STATUS_NO_MEMORY;
 521         }
 522
 523         /* Initialise input parameters */
 524
 525         lm.data = lm_response.data;
 526         lm.length = lm_response.length;
 527         nt.data = nt_response.data;
 528         nt.length = nt_response.length;
 529
 530         network_info->identity_info.domain_name.string          = domain;
 531         network_info->identity_info.parameter_control           = logon_parameters;
 532         network_info->identity_info.logon_id_low                = 0xdead;
 533         network_info->identity_info.logon_id_high               = 0xbeef;
 534         network_info->identity_info.account_name.string         = username;
 535         network_info->identity_info.workstation.string          = workstation_name_slash;
 536
 537         memcpy(network_info->challenge, chal, 8);
 538         network_info->nt = nt;
 539         network_info->lm = lm;
 540
 541         logon->network = network_info;
 542
 543         /* Marshall data and send request */
 544
 545         status = netlogon_creds_cli_LogonSamLogon(creds,
 546                                                   binding_handle,
 547                                                   NetlogonNetworkInformation,
 548                                                   logon,
 549                                                   mem_ctx,
 550                                                   &validation_level,
 551                                                   &validation,
 552                                                   authoritative,
 553                                                   flags);
 554         if (!NT_STATUS_IS_OK(status)) {
 555                 return status;
 556         }
 557
 558         status = map_validation_to_info3(mem_ctx,
 559                                          validation_level, validation,
 560                                          info3);
 561         if (!NT_STATUS_IS_OK(status)) {
 562                 return status;
 563         }
 564
 565         return NT_STATUS_OK;
 566 }