source/nsswitch/winbindd_misc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon - miscellaneous other functions
   5
   6    Copyright (C) Tim Potter      2000
   7    Copyright (C) Andrew Bartlett 2002
   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 2 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, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25 #include "winbindd.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_WINBIND
  29
  30 /* Check the machine account password is valid */
  31
  32 void winbindd_check_machine_acct(struct winbindd_cli_state *state)
  33 {
  34         DEBUG(3, ("[%5lu]: check machine account\n",
  35                   (unsigned long)state->pid));
  36
  37         sendto_domain(state, find_our_domain());
  38 }
  39
  40 enum winbindd_result winbindd_dual_check_machine_acct(struct winbindd_domain *domain,
  41                                                       struct winbindd_cli_state *state)
  42 {
  43         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
  44         int num_retries = 0;
  45         struct winbindd_domain *contact_domain;
  46
  47         DEBUG(3, ("[%5lu]: check machine account\n", (unsigned long)state->pid));
  48
  49         /* Get trust account password */
  50
  51  again:
  52
  53         contact_domain = find_our_domain();
  54
  55         /* This call does a cli_nt_setup_creds() which implicitly checks
  56            the trust account password. */
  57
  58         invalidate_cm_connection(&contact_domain->conn);
  59
  60         {
  61                 struct rpc_pipe_client *netlogon_pipe;
  62                 result = cm_connect_netlogon(contact_domain, &netlogon_pipe);
  63         }
  64
  65         if (!NT_STATUS_IS_OK(result)) {
  66                 DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
  67                 goto done;
  68         }
  69
  70         /* There is a race condition between fetching the trust account
  71            password and the periodic machine password change.  So it's
  72            possible that the trust account password has been changed on us.
  73            We are returned NT_STATUS_ACCESS_DENIED if this happens. */
  74
  75 #define MAX_RETRIES 8
  76
  77         if ((num_retries < MAX_RETRIES) &&
  78             NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED)) {
  79                 num_retries++;
  80                 goto again;
  81         }
  82
  83         /* Pass back result code - zero for success, other values for
  84            specific failures. */
  85
  86         DEBUG(3, ("secret is %s\n", NT_STATUS_IS_OK(result) ?
  87                   "good" : "bad"));
  88
  89  done:
  90         state->response.data.auth.nt_status = NT_STATUS_V(result);
  91         fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
  92         fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
  93         state->response.data.auth.pam_error = nt_status_to_pam(result);
  94
  95         DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Checking the trust account password returned %s\n",
  96                                                 state->response.data.auth.nt_status_string));
  97
  98         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
  99 }
 100
 101 void winbindd_list_trusted_domains(struct winbindd_cli_state *state)
 102 {
 103         DEBUG(3, ("[%5lu]: list trusted domains\n",
 104                   (unsigned long)state->pid));
 105
 106         sendto_domain(state, find_our_domain());
 107 }
 108
 109 enum winbindd_result winbindd_dual_list_trusted_domains(struct winbindd_domain *domain,
 110                                                         struct winbindd_cli_state *state)
 111 {
 112         uint32 i, num_domains;
 113         char **names, **alt_names;
 114         DOM_SID *sids;
 115         int extra_data_len = 0;
 116         char *extra_data;
 117         NTSTATUS result;
 118         BOOL have_own_domain = False;
 119
 120         DEBUG(3, ("[%5lu]: list trusted domains\n",
 121                   (unsigned long)state->pid));
 122
 123         result = domain->methods->trusted_domains(domain, state->mem_ctx,
 124                                                   &num_domains, &names,
 125                                                   &alt_names, &sids);
 126
 127         if (!NT_STATUS_IS_OK(result)) {
 128                 DEBUG(3, ("winbindd_dual_list_trusted_domains: trusted_domains returned %s\n",
 129                         nt_errstr(result) ));
 130                 return WINBINDD_ERROR;
 131         }
 132
 133         extra_data = talloc_strdup(state->mem_ctx, "");
 134
 135         if (num_domains > 0)
 136                 extra_data = talloc_asprintf(state->mem_ctx, "%s\\%s\\%s",
 137                                              names[0],
 138                                              alt_names[0] ? alt_names[0] : names[0],
 139                                              sid_string_static(&sids[0]));
 140
 141         for (i=1; i<num_domains; i++)
 142                 extra_data = talloc_asprintf(state->mem_ctx, "%s\n%s\\%s\\%s",
 143                                              extra_data,
 144                                              names[i],
 145                                              alt_names[i] ? alt_names[i] : names[i],
 146                                              sid_string_static(&sids[i]));
 147         /* add our primary domain */
 148
 149         for (i=0; i<num_domains; i++) {
 150                 if (strequal(names[i], domain->name)) {
 151                         have_own_domain = True;
 152                         break;
 153                 }
 154         }
 155
 156         if (state->request.data.list_all_domains && !have_own_domain) {
 157                 extra_data = talloc_asprintf(state->mem_ctx, "%s\n%s\\%s\\%s",
 158                                              extra_data,
 159                                              domain->name,
 160                                              domain->alt_name ? domain->alt_name : domain->name,
 161                                              sid_string_static(&domain->sid));
 162         }
 163
 164         /* This is a bit excessive, but the extra data sooner or later will be
 165            talloc'ed */
 166
 167         extra_data_len = 0;
 168         if (extra_data != NULL) {
 169                 extra_data_len = strlen(extra_data);
 170         }
 171
 172         if (extra_data_len > 0) {
 173                 state->response.extra_data.data = SMB_STRDUP(extra_data);
 174                 state->response.length += extra_data_len+1;
 175         }
 176
 177         return WINBINDD_OK;
 178 }
 179
 180 void winbindd_getdcname(struct winbindd_cli_state *state)
 181 {
 182         state->request.domain_name
 183                 [sizeof(state->request.domain_name)-1] = '\0';
 184
 185         DEBUG(3, ("[%5lu]: Get DC name for %s\n", (unsigned long)state->pid,
 186                   state->request.domain_name));
 187
 188         sendto_domain(state, find_our_domain());
 189 }
 190
 191 enum winbindd_result winbindd_dual_getdcname(struct winbindd_domain *domain,
 192                                              struct winbindd_cli_state *state)
 193 {
 194         fstring dcname_slash;
 195         char *p;
 196         struct rpc_pipe_client *netlogon_pipe;
 197         NTSTATUS result;
 198         WERROR werr;
 199         unsigned int orig_timeout;
 200
 201         state->request.domain_name
 202                 [sizeof(state->request.domain_name)-1] = '\0';
 203
 204         DEBUG(3, ("[%5lu]: Get DC name for %s\n", (unsigned long)state->pid,
 205                   state->request.domain_name));
 206
 207         result = cm_connect_netlogon(domain, &netlogon_pipe);
 208
 209         if (!NT_STATUS_IS_OK(result)) {
 210                 DEBUG(1, ("Can't contact the NETLOGON pipe\n"));
 211                 return WINBINDD_ERROR;
 212         }
 213
 214         /* This call can take a long time - allow the server to time out.
 215            35 seconds should do it. */
 216
 217         orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
 218
 219         werr = rpccli_netlogon_getdcname(netlogon_pipe, state->mem_ctx, domain->dcname,
 220                                            state->request.domain_name,
 221                                            dcname_slash);
 222         /* And restore our original timeout. */
 223         cli_set_timeout(netlogon_pipe->cli, orig_timeout);
 224
 225         if (!W_ERROR_IS_OK(werr)) {
 226                 DEBUG(5, ("Error requesting DCname: %s\n", dos_errstr(werr)));
 227                 return WINBINDD_ERROR;
 228         }
 229
 230         p = dcname_slash;
 231         if (*p == '\\') {
 232                 p+=1;
 233         }
 234         if (*p == '\\') {
 235                 p+=1;
 236         }
 237
 238         fstrcpy(state->response.data.dc_name, p);
 239         return WINBINDD_OK;
 240 }
 241
 242 struct sequence_state {
 243         TALLOC_CTX *mem_ctx;
 244         struct winbindd_cli_state *cli_state;
 245         struct winbindd_domain *domain;
 246         struct winbindd_request *request;
 247         struct winbindd_response *response;
 248         char *extra_data;
 249 };
 250
 251 static void sequence_recv(void *private_data, BOOL success);
 252
 253 void winbindd_show_sequence(struct winbindd_cli_state *state)
 254 {
 255         struct sequence_state *seq;
 256
 257         /* Ensure null termination */
 258         state->request.domain_name[sizeof(state->request.domain_name)-1]='\0';
 259
 260         if (strlen(state->request.domain_name) > 0) {
 261                 struct winbindd_domain *domain;
 262                 domain = find_domain_from_name_noinit(
 263                         state->request.domain_name);
 264                 if (domain == NULL) {
 265                         request_error(state);
 266                         return;
 267                 }
 268                 sendto_domain(state, domain);
 269                 return;
 270         }
 271
 272         /* Ask all domains in sequence, collect the results in sequence_recv */
 273
 274         seq = TALLOC_P(state->mem_ctx, struct sequence_state);
 275         if (seq == NULL) {
 276                 DEBUG(0, ("talloc failed\n"));
 277                 request_error(state);
 278                 return;
 279         }
 280
 281         seq->mem_ctx = state->mem_ctx;
 282         seq->cli_state = state;
 283         seq->domain = domain_list();
 284         if (seq->domain == NULL) {
 285                 DEBUG(0, ("domain list empty\n"));
 286                 request_error(state);
 287                 return;
 288         }
 289         seq->request = TALLOC_ZERO_P(state->mem_ctx,
 290                                      struct winbindd_request);
 291         seq->response = TALLOC_ZERO_P(state->mem_ctx,
 292                                       struct winbindd_response);
 293         seq->extra_data = talloc_strdup(state->mem_ctx, "");
 294
 295         if ((seq->request == NULL) || (seq->response == NULL) ||
 296             (seq->extra_data == NULL)) {
 297                 DEBUG(0, ("talloc failed\n"));
 298                 request_error(state);
 299                 return;
 300         }
 301
 302         seq->request->length = sizeof(*seq->request);
 303         seq->request->cmd = WINBINDD_SHOW_SEQUENCE;
 304         fstrcpy(seq->request->domain_name, seq->domain->name);
 305
 306         async_domain_request(state->mem_ctx, seq->domain,
 307                              seq->request, seq->response,
 308                              sequence_recv, seq);
 309 }
 310
 311 static void sequence_recv(void *private_data, BOOL success)
 312 {
 313         struct sequence_state *state =
 314                 (struct sequence_state *)private_data;
 315         uint32 seq = DOM_SEQUENCE_NONE;
 316
 317         if ((success) && (state->response->result == WINBINDD_OK))
 318                 seq = state->response->data.domain_info.sequence_number;
 319
 320         if (seq == DOM_SEQUENCE_NONE) {
 321                 state->extra_data = talloc_asprintf(state->mem_ctx,
 322                                                     "%s%s : DISCONNECTED\n",
 323                                                     state->extra_data,
 324                                                     state->domain->name);
 325         } else {
 326                 state->extra_data = talloc_asprintf(state->mem_ctx,
 327                                                     "%s%s : %d\n",
 328                                                     state->extra_data,
 329                                                     state->domain->name, seq);
 330         }
 331
 332         state->domain->sequence_number = seq;
 333
 334         state->domain = state->domain->next;
 335
 336         if (state->domain == NULL) {
 337                 struct winbindd_cli_state *cli_state = state->cli_state;
 338                 cli_state->response.length =
 339                         sizeof(cli_state->response) +
 340                         strlen(state->extra_data) + 1;
 341                 cli_state->response.extra_data.data =
 342                         SMB_STRDUP(state->extra_data);
 343                 request_ok(cli_state);
 344                 return;
 345         }
 346
 347         /* Ask the next domain */
 348         fstrcpy(state->request->domain_name, state->domain->name);
 349         async_domain_request(state->mem_ctx, state->domain,
 350                              state->request, state->response,
 351                              sequence_recv, state);
 352 }
 353
 354 /* This is the child-only version of --sequence. It only allows for a single
 355  * domain (ie "our" one) to be displayed. */
 356
 357 enum winbindd_result winbindd_dual_show_sequence(struct winbindd_domain *domain,
 358                                                  struct winbindd_cli_state *state)
 359 {
 360         DEBUG(3, ("[%5lu]: show sequence\n", (unsigned long)state->pid));
 361
 362         /* Ensure null termination */
 363         state->request.domain_name[sizeof(state->request.domain_name)-1]='\0';
 364
 365         domain->methods->sequence_number(domain, &domain->sequence_number);
 366
 367         state->response.data.domain_info.sequence_number =
 368                 domain->sequence_number;
 369
 370         return WINBINDD_OK;
 371 }
 372
 373 struct domain_info_state {
 374         struct winbindd_domain *domain;
 375         struct winbindd_cli_state *cli_state;
 376 };
 377
 378 static void domain_info_init_recv(void *private_data, BOOL success);
 379
 380 void winbindd_domain_info(struct winbindd_cli_state *state)
 381 {
 382         struct winbindd_domain *domain;
 383
 384         DEBUG(3, ("[%5lu]: domain_info [%s]\n", (unsigned long)state->pid,
 385                   state->request.domain_name));
 386
 387         domain = find_domain_from_name_noinit(state->request.domain_name);
 388
 389         if (domain == NULL) {
 390                 DEBUG(3, ("Did not find domain [%s]\n",
 391                           state->request.domain_name));
 392                 request_error(state);
 393                 return;
 394         }
 395
 396         if (!domain->initialized) {
 397                 struct domain_info_state *istate;
 398
 399                 istate = TALLOC_P(state->mem_ctx, struct domain_info_state);
 400                 if (istate == NULL) {
 401                         DEBUG(0, ("talloc failed\n"));
 402                         request_error(state);
 403                         return;
 404                 }
 405
 406                 istate->cli_state = state;
 407                 istate->domain = domain;
 408
 409                 init_child_connection(domain, domain_info_init_recv, istate);
 410
 411                 return;
 412         }
 413
 414         fstrcpy(state->response.data.domain_info.name,
 415                 domain->name);
 416         fstrcpy(state->response.data.domain_info.alt_name,
 417                 domain->alt_name);
 418         fstrcpy(state->response.data.domain_info.sid,
 419                 sid_string_static(&domain->sid));
 420
 421         state->response.data.domain_info.native_mode =
 422                 domain->native_mode;
 423         state->response.data.domain_info.active_directory =
 424                 domain->active_directory;
 425         state->response.data.domain_info.primary =
 426                 domain->primary;
 427         state->response.data.domain_info.sequence_number =
 428                 domain->sequence_number;
 429
 430         request_ok(state);
 431 }
 432
 433 static void domain_info_init_recv(void *private_data, BOOL success)
 434 {
 435         struct domain_info_state *istate =
 436                 (struct domain_info_state *)private_data;
 437         struct winbindd_cli_state *state = istate->cli_state;
 438         struct winbindd_domain *domain = istate->domain;
 439
 440         DEBUG(10, ("Got back from child init: %d\n", success));
 441
 442         if ((!success) || (!domain->initialized)) {
 443                 DEBUG(5, ("Could not init child for domain %s\n",
 444                           domain->name));
 445                 request_error(state);
 446                 return;
 447         }
 448
 449         fstrcpy(state->response.data.domain_info.name,
 450                 domain->name);
 451         fstrcpy(state->response.data.domain_info.alt_name,
 452                 domain->alt_name);
 453         fstrcpy(state->response.data.domain_info.sid,
 454                 sid_string_static(&domain->sid));
 455
 456         state->response.data.domain_info.native_mode =
 457                 domain->native_mode;
 458         state->response.data.domain_info.active_directory =
 459                 domain->active_directory;
 460         state->response.data.domain_info.primary =
 461                 domain->primary;
 462         state->response.data.domain_info.sequence_number =
 463                 domain->sequence_number;
 464
 465         request_ok(state);
 466 }
 467
 468 void winbindd_ping(struct winbindd_cli_state *state)
 469 {
 470         DEBUG(3, ("[%5lu]: ping\n", (unsigned long)state->pid));
 471         request_ok(state);
 472 }
 473
 474 /* List various tidbits of information */
 475
 476 void winbindd_info(struct winbindd_cli_state *state)
 477 {
 478
 479         DEBUG(3, ("[%5lu]: request misc info\n", (unsigned long)state->pid));
 480
 481         state->response.data.info.winbind_separator = *lp_winbind_separator();
 482         fstrcpy(state->response.data.info.samba_version, SAMBA_VERSION_STRING);
 483         request_ok(state);
 484 }
 485
 486 /* Tell the client the current interface version */
 487
 488 void winbindd_interface_version(struct winbindd_cli_state *state)
 489 {
 490         DEBUG(3, ("[%5lu]: request interface version\n",
 491                   (unsigned long)state->pid));
 492
 493         state->response.data.interface_version = WINBIND_INTERFACE_VERSION;
 494         request_ok(state);
 495 }
 496
 497 /* What domain are we a member of? */
 498
 499 void winbindd_domain_name(struct winbindd_cli_state *state)
 500 {
 501         DEBUG(3, ("[%5lu]: request domain name\n", (unsigned long)state->pid));
 502
 503         fstrcpy(state->response.data.domain_name, lp_workgroup());
 504         request_ok(state);
 505 }
 506
 507 /* What's my name again? */
 508
 509 void winbindd_netbios_name(struct winbindd_cli_state *state)
 510 {
 511         DEBUG(3, ("[%5lu]: request netbios name\n",
 512                   (unsigned long)state->pid));
 513
 514         fstrcpy(state->response.data.netbios_name, global_myname());
 515         request_ok(state);
 516 }
 517
 518 /* Where can I find the privilaged pipe? */
 519
 520 void winbindd_priv_pipe_dir(struct winbindd_cli_state *state)
 521 {
 522
 523         DEBUG(3, ("[%5lu]: request location of privileged pipe\n",
 524                   (unsigned long)state->pid));
 525
 526         state->response.extra_data.data = SMB_STRDUP(get_winbind_priv_pipe_dir());
 527         if (!state->response.extra_data.data) {
 528                 DEBUG(0, ("malloc failed\n"));
 529                 request_error(state);
 530                 return;
 531         }
 532
 533         /* must add one to length to copy the 0 for string termination */
 534         state->response.length +=
 535                 strlen((char *)state->response.extra_data.data) + 1;
 536
 537         request_ok(state);
 538 }