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(talloc_autofree_context(), 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 NTSTATUS rpccli_create_netlogon_creds(const char *server_computer,
  90                                       const char *server_netbios_domain,
  91                                       const char *client_account,
  92                                       enum netr_SchannelType sec_chan_type,
  93                                       struct messaging_context *msg_ctx,
  94                                       TALLOC_CTX *mem_ctx,
  95                                       struct netlogon_creds_cli_context **netlogon_creds)
  96 {
  97         TALLOC_CTX *frame = talloc_stackframe();
  98         struct loadparm_context *lp_ctx;
  99         NTSTATUS status;
 100
 101         status = rpccli_pre_open_netlogon_creds();
 102         if (!NT_STATUS_IS_OK(status)) {
 103                 TALLOC_FREE(frame);
 104                 return status;
 105         }
 106
 107         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
 108         if (lp_ctx == NULL) {
 109                 TALLOC_FREE(frame);
 110                 return NT_STATUS_NO_MEMORY;
 111         }
 112         status = netlogon_creds_cli_context_global(lp_ctx,
 113                                                    msg_ctx,
 114                                                    client_account,
 115                                                    sec_chan_type,
 116                                                    server_computer,
 117                                                    server_netbios_domain,
 118                                                    mem_ctx, netlogon_creds);
 119         TALLOC_FREE(frame);
 120         if (!NT_STATUS_IS_OK(status)) {
 121                 return status;
 122         }
 123
 124         return NT_STATUS_OK;
 125 }
 126
 127 NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
 128                                      struct netlogon_creds_cli_context *netlogon_creds,
 129                                      bool force_reauth,
 130                                      struct samr_Password current_nt_hash,
 131                                      const struct samr_Password *previous_nt_hash)
 132 {
 133         TALLOC_CTX *frame = talloc_stackframe();
 134         struct rpc_pipe_client *netlogon_pipe = NULL;
 135         struct netlogon_creds_CredentialState *creds = NULL;
 136         NTSTATUS status;
 137
 138         status = netlogon_creds_cli_get(netlogon_creds,
 139                                         frame, &creds);
 140         if (NT_STATUS_IS_OK(status)) {
 141                 const char *action = "using";
 142
 143                 if (force_reauth) {
 144                         action = "overwrite";
 145                 }
 146
 147                 DEBUG(5,("%s: %s cached netlogon_creds cli[%s/%s] to %s\n",
 148                          __FUNCTION__, action,
 149                          creds->account_name, creds->computer_name,
 150                          smbXcli_conn_remote_name(cli->conn)));
 151                 if (!force_reauth) {
 152                         TALLOC_FREE(frame);
 153                         return NT_STATUS_OK;
 154                 }
 155                 TALLOC_FREE(creds);
 156         }
 157
 158         status = cli_rpc_pipe_open_noauth(cli,
 159                                           &ndr_table_netlogon,
 160                                           &netlogon_pipe);
 161         if (!NT_STATUS_IS_OK(status)) {
 162                 DEBUG(5,("%s: failed to open noauth netlogon connection to %s - %s\n",
 163                          __FUNCTION__,
 164                          smbXcli_conn_remote_name(cli->conn),
 165                          nt_errstr(status)));
 166                 TALLOC_FREE(frame);
 167                 return status;
 168         }
 169         talloc_steal(frame, netlogon_pipe);
 170
 171         status = netlogon_creds_cli_auth(netlogon_creds,
 172                                          netlogon_pipe->binding_handle,
 173                                          current_nt_hash,
 174                                          previous_nt_hash);
 175         if (!NT_STATUS_IS_OK(status)) {
 176                 TALLOC_FREE(frame);
 177                 return status;
 178         }
 179
 180         status = netlogon_creds_cli_get(netlogon_creds,
 181                                         frame, &creds);
 182         if (!NT_STATUS_IS_OK(status)) {
 183                 TALLOC_FREE(frame);
 184                 return NT_STATUS_INTERNAL_ERROR;
 185         }
 186
 187         DEBUG(5,("%s: using new netlogon_creds cli[%s/%s] to %s\n",
 188                  __FUNCTION__,
 189                  creds->account_name, creds->computer_name,
 190                  smbXcli_conn_remote_name(cli->conn)));
 191
 192         TALLOC_FREE(frame);
 193         return NT_STATUS_OK;
 194 }
 195
 196 static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
 197                                         uint16_t validation_level,
 198                                         union netr_Validation *validation,
 199                                         struct netr_SamInfo3 **info3_p)
 200 {
 201         struct netr_SamInfo3 *info3;
 202         NTSTATUS status;
 203
 204         if (validation == NULL) {
 205                 return NT_STATUS_INVALID_PARAMETER;
 206         }
 207
 208         switch (validation_level) {
 209         case 3:
 210                 if (validation->sam3 == NULL) {
 211                         return NT_STATUS_INVALID_PARAMETER;
 212                 }
 213
 214                 info3 = talloc_move(mem_ctx, &validation->sam3);
 215                 break;
 216         case 6:
 217                 if (validation->sam6 == NULL) {
 218                         return NT_STATUS_INVALID_PARAMETER;
 219                 }
 220
 221                 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 222                 if (info3 == NULL) {
 223                         return NT_STATUS_NO_MEMORY;
 224                 }
 225                 status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
 226                 if (!NT_STATUS_IS_OK(status)) {
 227                         TALLOC_FREE(info3);
 228                         return status;
 229                 }
 230
 231                 info3->sidcount = validation->sam6->sidcount;
 232                 info3->sids = talloc_move(info3, &validation->sam6->sids);
 233                 break;
 234         default:
 235                 return NT_STATUS_BAD_VALIDATION_CLASS;
 236         }
 237
 238         *info3_p = info3;
 239
 240         return NT_STATUS_OK;
 241 }
 242
 243 /* Logon domain user */
 244
 245 NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds,
 246                                         struct dcerpc_binding_handle *binding_handle,
 247                                         TALLOC_CTX *mem_ctx,
 248                                         uint32_t logon_parameters,
 249                                         const char *domain,
 250                                         const char *username,
 251                                         const char *password,
 252                                         const char *workstation,
 253                                         enum netr_LogonInfoClass logon_type,
 254                                         struct netr_SamInfo3 **info3)
 255 {
 256         TALLOC_CTX *frame = talloc_stackframe();
 257         NTSTATUS status;
 258         union netr_LogonLevel *logon;
 259         uint16_t validation_level = 0;
 260         union netr_Validation *validation = NULL;
 261         uint8_t authoritative = 0;
 262         uint32_t flags = 0;
 263         char *workstation_slash = NULL;
 264
 265         logon = talloc_zero(frame, union netr_LogonLevel);
 266         if (logon == NULL) {
 267                 TALLOC_FREE(frame);
 268                 return NT_STATUS_NO_MEMORY;
 269         }
 270
 271         if (workstation == NULL) {
 272                 workstation = lp_netbios_name();
 273         }
 274
 275         workstation_slash = talloc_asprintf(frame, "\\\\%s", workstation);
 276         if (workstation_slash == NULL) {
 277                 TALLOC_FREE(frame);
 278                 return NT_STATUS_NO_MEMORY;
 279         }
 280
 281         /* Initialise input parameters */
 282
 283         switch (logon_type) {
 284         case NetlogonInteractiveInformation: {
 285
 286                 struct netr_PasswordInfo *password_info;
 287
 288                 struct samr_Password lmpassword;
 289                 struct samr_Password ntpassword;
 290
 291                 password_info = talloc_zero(frame, struct netr_PasswordInfo);
 292                 if (password_info == NULL) {
 293                         TALLOC_FREE(frame);
 294                         return NT_STATUS_NO_MEMORY;
 295                 }
 296
 297                 nt_lm_owf_gen(password, ntpassword.hash, lmpassword.hash);
 298
 299                 password_info->identity_info.domain_name.string         = domain;
 300                 password_info->identity_info.parameter_control          = logon_parameters;
 301                 password_info->identity_info.logon_id_low               = 0xdead;
 302                 password_info->identity_info.logon_id_high              = 0xbeef;
 303                 password_info->identity_info.account_name.string        = username;
 304                 password_info->identity_info.workstation.string         = workstation_slash;
 305
 306                 password_info->lmpassword = lmpassword;
 307                 password_info->ntpassword = ntpassword;
 308
 309                 logon->password = password_info;
 310
 311                 break;
 312         }
 313         case NetlogonNetworkInformation: {
 314                 struct netr_NetworkInfo *network_info;
 315                 uint8 chal[8];
 316                 unsigned char local_lm_response[24];
 317                 unsigned char local_nt_response[24];
 318                 struct netr_ChallengeResponse lm;
 319                 struct netr_ChallengeResponse nt;
 320
 321                 ZERO_STRUCT(lm);
 322                 ZERO_STRUCT(nt);
 323
 324                 network_info = talloc_zero(frame, struct netr_NetworkInfo);
 325                 if (network_info == NULL) {
 326                         TALLOC_FREE(frame);
 327                         return NT_STATUS_NO_MEMORY;
 328                 }
 329
 330                 generate_random_buffer(chal, 8);
 331
 332                 SMBencrypt(password, chal, local_lm_response);
 333                 SMBNTencrypt(password, chal, local_nt_response);
 334
 335                 lm.length = 24;
 336                 lm.data = local_lm_response;
 337
 338                 nt.length = 24;
 339                 nt.data = local_nt_response;
 340
 341                 network_info->identity_info.domain_name.string          = domain;
 342                 network_info->identity_info.parameter_control           = logon_parameters;
 343                 network_info->identity_info.logon_id_low                = 0xdead;
 344                 network_info->identity_info.logon_id_high               = 0xbeef;
 345                 network_info->identity_info.account_name.string         = username;
 346                 network_info->identity_info.workstation.string          = workstation_slash;
 347
 348                 memcpy(network_info->challenge, chal, 8);
 349                 network_info->nt = nt;
 350                 network_info->lm = lm;
 351
 352                 logon->network = network_info;
 353
 354                 break;
 355         }
 356         default:
 357                 DEBUG(0, ("switch value %d not supported\n",
 358                         logon_type));
 359                 TALLOC_FREE(frame);
 360                 return NT_STATUS_INVALID_INFO_CLASS;
 361         }
 362
 363         status = netlogon_creds_cli_LogonSamLogon(creds,
 364                                                   binding_handle,
 365                                                   logon_type,
 366                                                   logon,
 367                                                   frame,
 368                                                   &validation_level,
 369                                                   &validation,
 370                                                   &authoritative,
 371                                                   &flags);
 372         if (!NT_STATUS_IS_OK(status)) {
 373                 TALLOC_FREE(frame);
 374                 return status;
 375         }
 376
 377         status = map_validation_to_info3(mem_ctx,
 378                                          validation_level, validation,
 379                                          info3);
 380         TALLOC_FREE(frame);
 381         if (!NT_STATUS_IS_OK(status)) {
 382                 return status;
 383         }
 384
 385
 386         return NT_STATUS_OK;
 387 }
 388
 389 /**
 390  * Logon domain user with an 'network' SAM logon
 391  *
 392  * @param info3 Pointer to a NET_USER_INFO_3 already allocated by the caller.
 393  **/
 394
 395
 396 NTSTATUS rpccli_netlogon_network_logon(struct netlogon_creds_cli_context *creds,
 397                                        struct dcerpc_binding_handle *binding_handle,
 398                                        TALLOC_CTX *mem_ctx,
 399                                        uint32_t logon_parameters,
 400                                        const char *username,
 401                                        const char *domain,
 402                                        const char *workstation,
 403                                        const uint8 chal[8],
 404                                        DATA_BLOB lm_response,
 405                                        DATA_BLOB nt_response,
 406                                        uint8_t *authoritative,
 407                                        uint32_t *flags,
 408                                        struct netr_SamInfo3 **info3)
 409 {
 410         NTSTATUS status;
 411         const char *workstation_name_slash;
 412         union netr_LogonLevel *logon = NULL;
 413         struct netr_NetworkInfo *network_info;
 414         uint16_t validation_level = 0;
 415         union netr_Validation *validation = NULL;
 416         uint8_t _authoritative = 0;
 417         uint32_t _flags = 0;
 418         struct netr_ChallengeResponse lm;
 419         struct netr_ChallengeResponse nt;
 420
 421         *info3 = NULL;
 422
 423         if (authoritative == NULL) {
 424                 authoritative = &_authoritative;
 425         }
 426         if (flags == NULL) {
 427                 flags = &_flags;
 428         }
 429
 430         ZERO_STRUCT(lm);
 431         ZERO_STRUCT(nt);
 432
 433         logon = talloc_zero(mem_ctx, union netr_LogonLevel);
 434         if (!logon) {
 435                 return NT_STATUS_NO_MEMORY;
 436         }
 437
 438         network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
 439         if (!network_info) {
 440                 return NT_STATUS_NO_MEMORY;
 441         }
 442
 443         if (workstation[0] != '\\' && workstation[1] != '\\') {
 444                 workstation_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", workstation);
 445         } else {
 446                 workstation_name_slash = workstation;
 447         }
 448
 449         if (!workstation_name_slash) {
 450                 DEBUG(0, ("talloc_asprintf failed!\n"));
 451                 return NT_STATUS_NO_MEMORY;
 452         }
 453
 454         /* Initialise input parameters */
 455
 456         lm.data = lm_response.data;
 457         lm.length = lm_response.length;
 458         nt.data = nt_response.data;
 459         nt.length = nt_response.length;
 460
 461         network_info->identity_info.domain_name.string          = domain;
 462         network_info->identity_info.parameter_control           = logon_parameters;
 463         network_info->identity_info.logon_id_low                = 0xdead;
 464         network_info->identity_info.logon_id_high               = 0xbeef;
 465         network_info->identity_info.account_name.string         = username;
 466         network_info->identity_info.workstation.string          = workstation_name_slash;
 467
 468         memcpy(network_info->challenge, chal, 8);
 469         network_info->nt = nt;
 470         network_info->lm = lm;
 471
 472         logon->network = network_info;
 473
 474         /* Marshall data and send request */
 475
 476         status = netlogon_creds_cli_LogonSamLogon(creds,
 477                                                   binding_handle,
 478                                                   NetlogonNetworkInformation,
 479                                                   logon,
 480                                                   mem_ctx,
 481                                                   &validation_level,
 482                                                   &validation,
 483                                                   authoritative,
 484                                                   flags);
 485         if (!NT_STATUS_IS_OK(status)) {
 486                 return status;
 487         }
 488
 489         status = map_validation_to_info3(mem_ctx,
 490                                          validation_level, validation,
 491                                          info3);
 492         if (!NT_STATUS_IS_OK(status)) {
 493                 return status;
 494         }
 495
 496         return NT_STATUS_OK;
 497 }