source3/nsswitch/winbindd.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4
   5    Winbind daemon for ntdom nss module
   6
   7    Copyright (C) by Tim Potter 2000, 2001
   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 "winbindd.h"
  25
  26 /* List of all connected clients */
  27
  28 struct winbindd_cli_state *client_list;
  29 static int num_clients;
  30 BOOL opt_nocache;
  31
  32 /* Reload configuration */
  33
  34 static BOOL reload_services_file(BOOL test)
  35 {
  36         BOOL ret;
  37         pstring logfile;
  38
  39         if (lp_loaded()) {
  40                 pstring fname;
  41
  42                 pstrcpy(fname,lp_configfile());
  43                 if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
  44                         pstrcpy(dyn_CONFIGFILE,fname);
  45                         test = False;
  46                 }
  47         }
  48
  49         snprintf(logfile, sizeof(logfile), "%s/log.winbindd", dyn_LOGFILEBASE);
  50         lp_set_logfile(logfile);
  51
  52         reopen_logs();
  53         ret = lp_load(dyn_CONFIGFILE,False,False,True);
  54
  55         snprintf(logfile, sizeof(logfile), "%s/log.winbindd", dyn_LOGFILEBASE);
  56         lp_set_logfile(logfile);
  57
  58         reopen_logs();
  59         load_interfaces();
  60
  61         return(ret);
  62 }
  63
  64 #if DUMP_CORE
  65
  66 /**************************************************************************** **
  67  Prepare to dump a core file - carefully!
  68  **************************************************************************** */
  69
  70 static BOOL dump_core(void)
  71 {
  72         char *p;
  73         pstring dname;
  74         pstrcpy( dname, lp_logfile() );
  75         if ((p=strrchr(dname,'/')))
  76                 *p=0;
  77         pstrcat( dname, "/corefiles" );
  78         mkdir( dname, 0700 );
  79         sys_chown( dname, getuid(), getgid() );
  80         chmod( dname, 0700 );
  81         if ( chdir(dname) )
  82                 return( False );
  83         umask( ~(0700) );
  84
  85 #ifdef HAVE_GETRLIMIT
  86 #ifdef RLIMIT_CORE
  87         {
  88                 struct rlimit rlp;
  89                 getrlimit( RLIMIT_CORE, &rlp );
  90                 rlp.rlim_cur = MAX( 4*1024*1024, rlp.rlim_cur );
  91                 setrlimit( RLIMIT_CORE, &rlp );
  92                 getrlimit( RLIMIT_CORE, &rlp );
  93                 DEBUG( 3, ( "Core limits now %d %d\n", (int)rlp.rlim_cur, (int)rlp.rlim_max ) );
  94         }
  95 #endif
  96 #endif
  97
  98         DEBUG(0,("Dumping core in %s\n",dname));
  99         abort();
 100         return( True );
 101 } /* dump_core */
 102 #endif
 103
 104 /**************************************************************************** **
 105  Handle a fault..
 106  **************************************************************************** */
 107
 108 static void fault_quit(void)
 109 {
 110 #if DUMP_CORE
 111         dump_core();
 112 #endif
 113 }
 114
 115 static void winbindd_status(void)
 116 {
 117         struct winbindd_cli_state *tmp;
 118
 119         DEBUG(0, ("winbindd status:\n"));
 120
 121         /* Print client state information */
 122
 123         DEBUG(0, ("\t%d clients currently active\n", num_clients));
 124
 125         if (DEBUGLEVEL >= 2 && num_clients) {
 126                 DEBUG(2, ("\tclient list:\n"));
 127                 for(tmp = client_list; tmp; tmp = tmp->next) {
 128                         DEBUG(2, ("\t\tpid %d, sock %d, rbl %d, wbl %d\n",
 129                                   tmp->pid, tmp->sock, tmp->read_buf_len,
 130                                   tmp->write_buf_len));
 131                 }
 132         }
 133 }
 134
 135 /* Print winbindd status to log file */
 136
 137 static void print_winbindd_status(void)
 138 {
 139         winbindd_status();
 140         winbindd_idmap_status();
 141         winbindd_cm_status();
 142 }
 143
 144 /* Flush client cache */
 145
 146 static void flush_caches(void)
 147 {
 148         /* Clear cached user and group enumation info */
 149         wcache_flush_cache();
 150 }
 151
 152 /* Handle the signal by unlinking socket and exiting */
 153
 154 static void terminate(void)
 155 {
 156         pstring path;
 157
 158         /* Remove socket file */
 159         snprintf(path, sizeof(path), "%s/%s",
 160                  WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME);
 161         unlink(path);
 162         exit(0);
 163 }
 164
 165 static BOOL do_sigterm;
 166
 167 static void termination_handler(int signum)
 168 {
 169         do_sigterm = True;
 170 }
 171
 172 static BOOL do_sigusr1;
 173
 174 static void sigusr1_handler(int signum)
 175 {
 176         do_sigusr1 = True;
 177 }
 178
 179 static BOOL do_sighup;
 180
 181 static void sighup_handler(int signum)
 182 {
 183         do_sighup = True;
 184 }
 185
 186 /* Create winbindd socket */
 187
 188 static int create_sock(void)
 189 {
 190         struct sockaddr_un sunaddr;
 191         struct stat st;
 192         int sock;
 193         mode_t old_umask;
 194         pstring path;
 195
 196         /* Create the socket directory or reuse the existing one */
 197
 198         if (lstat(WINBINDD_SOCKET_DIR, &st) == -1) {
 199
 200                 if (errno == ENOENT) {
 201
 202                         /* Create directory */
 203
 204                         if (mkdir(WINBINDD_SOCKET_DIR, 0755) == -1) {
 205                                 DEBUG(0, ("error creating socket directory "
 206                                           "%s: %s\n", WINBINDD_SOCKET_DIR,
 207                                           strerror(errno)));
 208                                 return -1;
 209                         }
 210
 211                 } else {
 212
 213                         DEBUG(0, ("lstat failed on socket directory %s: %s\n",
 214                                   WINBINDD_SOCKET_DIR, strerror(errno)));
 215                         return -1;
 216                 }
 217
 218         } else {
 219
 220                 /* Check ownership and permission on existing directory */
 221
 222                 if (!S_ISDIR(st.st_mode)) {
 223                         DEBUG(0, ("socket directory %s isn't a directory\n",
 224                                   WINBINDD_SOCKET_DIR));
 225                         return -1;
 226                 }
 227
 228                 if ((st.st_uid != sec_initial_uid()) ||
 229                     ((st.st_mode & 0777) != 0755)) {
 230                         DEBUG(0, ("invalid permissions on socket directory "
 231                                   "%s\n", WINBINDD_SOCKET_DIR));
 232                         return -1;
 233                 }
 234         }
 235
 236         /* Create the socket file */
 237
 238         old_umask = umask(0);
 239
 240         sock = socket(AF_UNIX, SOCK_STREAM, 0);
 241
 242         if (sock == -1) {
 243                 perror("socket");
 244                 return -1;
 245         }
 246
 247         snprintf(path, sizeof(path), "%s/%s",
 248                  WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME);
 249
 250         unlink(path);
 251         memset(&sunaddr, 0, sizeof(sunaddr));
 252         sunaddr.sun_family = AF_UNIX;
 253         safe_strcpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path)-1);
 254
 255         if (bind(sock, (struct sockaddr *)&sunaddr, sizeof(sunaddr)) == -1) {
 256                 DEBUG(0, ("bind failed on winbind socket %s: %s\n",
 257                           path,
 258                           strerror(errno)));
 259                 close(sock);
 260                 return -1;
 261         }
 262
 263         if (listen(sock, 5) == -1) {
 264                 DEBUG(0, ("listen failed on winbind socket %s: %s\n",
 265                           path,
 266                           strerror(errno)));
 267                 close(sock);
 268                 return -1;
 269         }
 270
 271         umask(old_umask);
 272
 273         /* Success! */
 274
 275         return sock;
 276 }
 277
 278 struct dispatch_table {
 279         enum winbindd_cmd cmd;
 280         enum winbindd_result (*fn)(struct winbindd_cli_state *state);
 281         char *winbindd_cmd_name;
 282 };
 283
 284 static struct dispatch_table dispatch_table[] = {
 285
 286         /* User functions */
 287
 288         { WINBINDD_GETPWNAM_FROM_USER, winbindd_getpwnam_from_user, "GETPWNAM_FROM_USER" },
 289         { WINBINDD_GETPWNAM_FROM_UID, winbindd_getpwnam_from_uid, "GETPWNAM_FROM_UID" },
 290
 291         { WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
 292         { WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
 293         { WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
 294
 295         { WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
 296
 297         /* Group functions */
 298
 299         { WINBINDD_GETGRNAM_FROM_GROUP, winbindd_getgrnam_from_group, "GETGRNAM_FROM_GROUP" },
 300         { WINBINDD_GETGRNAM_FROM_GID, winbindd_getgrnam_from_gid, "GETGRNAM_FROM_GID" },
 301         { WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
 302         { WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
 303         { WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
 304
 305         /* PAM auth functions */
 306
 307         { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
 308         { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
 309         { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
 310
 311         /* Enumeration functions */
 312
 313         { WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
 314         { WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
 315         { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains, "LIST_TRUSTDOM" },
 316
 317         /* SID related functions */
 318
 319         { WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
 320         { WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
 321
 322         /* Lookup related functions */
 323
 324         { WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
 325         { WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
 326         { WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
 327         { WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
 328
 329         /* Miscellaneous */
 330
 331         { WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
 332
 333         /* End of list */
 334
 335         { WINBINDD_NUM_CMDS, NULL, "NONE" }
 336 };
 337
 338 static void process_request(struct winbindd_cli_state *state)
 339 {
 340         struct dispatch_table *table = dispatch_table;
 341
 342         /* Free response data - we may be interrupted and receive another
 343            command before being able to send this data off. */
 344
 345         SAFE_FREE(state->response.extra_data);
 346
 347         ZERO_STRUCT(state->response);
 348
 349         state->response.result = WINBINDD_ERROR;
 350         state->response.length = sizeof(struct winbindd_response);
 351
 352         /* Process command */
 353
 354         for (table = dispatch_table; table->fn; table++) {
 355                 if (state->request.cmd == table->cmd) {
 356                         DEBUG(10,("process_request: request fn %s\n", table->winbindd_cmd_name ));
 357                         state->response.result = table->fn(state);
 358                         break;
 359                 }
 360         }
 361
 362         if (!table->fn)
 363                 DEBUG(10,("process_request: unknown request fn number %d\n", (int)state->request.cmd ));
 364
 365         /* In case extra data pointer is NULL */
 366
 367         if (!state->response.extra_data)
 368                 state->response.length = sizeof(struct winbindd_response);
 369 }
 370
 371 /* Process a new connection by adding it to the client connection list */
 372
 373 static void new_connection(int accept_sock)
 374 {
 375         struct sockaddr_un sunaddr;
 376         struct winbindd_cli_state *state;
 377         socklen_t len;
 378         int sock;
 379
 380         /* Accept connection */
 381
 382         len = sizeof(sunaddr);
 383
 384         do {
 385                 sock = accept(accept_sock, (struct sockaddr *)&sunaddr, &len);
 386         } while (sock == -1 && errno == EINTR);
 387
 388         if (sock == -1)
 389                 return;
 390
 391         DEBUG(6,("accepted socket %d\n", sock));
 392
 393         /* Create new connection structure */
 394
 395         if ((state = (struct winbindd_cli_state *)
 396              malloc(sizeof(*state))) == NULL)
 397                 return;
 398
 399         ZERO_STRUCTP(state);
 400         state->sock = sock;
 401
 402         /* Add to connection list */
 403
 404         DLIST_ADD(client_list, state);
 405         num_clients++;
 406 }
 407
 408 /* Remove a client connection from client connection list */
 409
 410 static void remove_client(struct winbindd_cli_state *state)
 411 {
 412         /* It's a dead client - hold a funeral */
 413
 414         if (state != NULL) {
 415
 416                 /* Close socket */
 417
 418                 close(state->sock);
 419
 420                 /* Free any getent state */
 421
 422                 free_getent_state(state->getpwent_state);
 423                 free_getent_state(state->getgrent_state);
 424
 425                 /* We may have some extra data that was not freed if the
 426                    client was killed unexpectedly */
 427
 428                 SAFE_FREE(state->response.extra_data);
 429
 430                 /* Remove from list and free */
 431
 432                 DLIST_REMOVE(client_list, state);
 433                 SAFE_FREE(state);
 434                 num_clients--;
 435         }
 436 }
 437
 438 /* Process a complete received packet from a client */
 439
 440 static void process_packet(struct winbindd_cli_state *state)
 441 {
 442         /* Process request */
 443
 444         state->pid = state->request.pid;
 445
 446         process_request(state);
 447
 448         /* Update client state */
 449
 450         state->read_buf_len = 0;
 451         state->write_buf_len = sizeof(struct winbindd_response);
 452 }
 453
 454 /* Read some data from a client connection */
 455
 456 static void client_read(struct winbindd_cli_state *state)
 457 {
 458         int n;
 459
 460         /* Read data */
 461
 462         do {
 463                 n = read(state->sock, state->read_buf_len + (char *)&state->request,
 464                                  sizeof(state->request) - state->read_buf_len);
 465         } while (n == -1 && errno == EINTR);
 466
 467         DEBUG(10,("client_read: read %d bytes. Need %d more for a full request.\n", n,
 468                         sizeof(state->request) - n - state->read_buf_len ));
 469
 470         /* Read failed, kill client */
 471
 472         if (n == -1 || n == 0) {
 473                 DEBUG(5,("read failed on sock %d, pid %d: %s\n",
 474                          state->sock, state->pid,
 475                          (n == -1) ? strerror(errno) : "EOF"));
 476
 477                 state->finished = True;
 478                 return;
 479         }
 480
 481         /* Update client state */
 482
 483         state->read_buf_len += n;
 484 }
 485
 486 /* Write some data to a client connection */
 487
 488 static void client_write(struct winbindd_cli_state *state)
 489 {
 490         char *data;
 491         int num_written;
 492
 493         /* Write some data */
 494
 495         if (!state->write_extra_data) {
 496
 497                 /* Write response structure */
 498
 499                 data = (char *)&state->response + sizeof(state->response) -
 500                         state->write_buf_len;
 501
 502         } else {
 503
 504                 /* Write extra data */
 505
 506                 data = (char *)state->response.extra_data +
 507                         state->response.length -
 508                         sizeof(struct winbindd_response) -
 509                         state->write_buf_len;
 510         }
 511
 512         do {
 513                 num_written = write(state->sock, data, state->write_buf_len);
 514         } while (num_written == -1 && errno == EINTR);
 515
 516         DEBUG(10,("client_write: wrote %d bytes.\n", num_written ));
 517
 518         /* Write failed, kill cilent */
 519
 520         if (num_written == -1 || num_written == 0) {
 521
 522                 DEBUG(3,("write failed on sock %d, pid %d: %s\n",
 523                          state->sock, state->pid,
 524                          (num_written == -1) ? strerror(errno) : "EOF"));
 525
 526                 state->finished = True;
 527
 528                 SAFE_FREE(state->response.extra_data);
 529
 530                 return;
 531         }
 532
 533         /* Update client state */
 534
 535         state->write_buf_len -= num_written;
 536
 537         /* Have we written all data? */
 538
 539         if (state->write_buf_len == 0) {
 540
 541                 /* Take care of extra data */
 542
 543                 if (state->write_extra_data) {
 544
 545                         SAFE_FREE(state->response.extra_data);
 546
 547                         state->write_extra_data = False;
 548
 549                         DEBUG(10,("client_write: client_write: complete response written.\n"));
 550
 551                 } else if (state->response.length >
 552                            sizeof(struct winbindd_response)) {
 553
 554                         /* Start writing extra data */
 555
 556                         state->write_buf_len =
 557                                 state->response.length -
 558                                 sizeof(struct winbindd_response);
 559
 560                         DEBUG(10,("client_write: need to write %d extra data bytes.\n", (int)state->write_buf_len));
 561
 562                         state->write_extra_data = True;
 563                 }
 564         }
 565 }
 566
 567 /* Process incoming clients on accept_sock.  We use a tricky non-blocking,
 568    non-forking, non-threaded model which allows us to handle many
 569    simultaneous connections while remaining impervious to many denial of
 570    service attacks. */
 571
 572 static void process_loop(int accept_sock)
 573 {
 574         /* We'll be doing this a lot */
 575
 576         while (1) {
 577                 struct winbindd_cli_state *state;
 578                 fd_set r_fds, w_fds;
 579                 int maxfd = accept_sock, selret;
 580                 struct timeval timeout;
 581
 582                 /* Free up temporary memory */
 583
 584                 lp_talloc_free();
 585
 586                 /* Initialise fd lists for select() */
 587
 588                 FD_ZERO(&r_fds);
 589                 FD_ZERO(&w_fds);
 590                 FD_SET(accept_sock, &r_fds);
 591
 592                 timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
 593                 timeout.tv_usec = 0;
 594
 595                 /* Set up client readers and writers */
 596
 597                 state = client_list;
 598
 599                 while (state) {
 600
 601                         /* Dispose of client connection if it is marked as
 602                            finished */
 603
 604                         if (state->finished) {
 605                                 struct winbindd_cli_state *next = state->next;
 606
 607                                 remove_client(state);
 608                                 state = next;
 609                                 continue;
 610                         }
 611
 612                         /* Select requires we know the highest fd used */
 613
 614                         if (state->sock > maxfd)
 615                                 maxfd = state->sock;
 616
 617                         /* Add fd for reading */
 618
 619                         if (state->read_buf_len != sizeof(state->request))
 620                                 FD_SET(state->sock, &r_fds);
 621
 622                         /* Add fd for writing */
 623
 624                         if (state->write_buf_len)
 625                                 FD_SET(state->sock, &w_fds);
 626
 627                         state = state->next;
 628                 }
 629
 630                 /* Call select */
 631
 632                 selret = select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
 633
 634                 if (selret == 0)
 635                         continue;
 636
 637                 if ((selret == -1 && errno != EINTR) || selret == 0) {
 638
 639                         /* Select error, something is badly wrong */
 640
 641                         perror("select");
 642                         exit(1);
 643                 }
 644
 645                 /* Create a new connection if accept_sock readable */
 646
 647                 if (selret > 0) {
 648
 649                         if (FD_ISSET(accept_sock, &r_fds))
 650                                 new_connection(accept_sock);
 651
 652                         /* Process activity on client connections */
 653
 654                         for (state = client_list; state; state = state->next) {
 655
 656                                 /* Data available for reading */
 657
 658                                 if (FD_ISSET(state->sock, &r_fds)) {
 659
 660                                         /* Read data */
 661
 662                                         client_read(state);
 663
 664 #if 0
 665                                         /* JRA - currently there's no length field in the request... */
 666                                         /*
 667                                          * If we have the start of a
 668                                          * packet, then check the
 669                                          * length field to make sure
 670                                          * the client's not talking
 671                                          * Mock Swedish.
 672                                          */
 673
 674                                         if (state->read_buf_len >= sizeof(int)
 675                                             && *(int *) state->buf != sizeof(state->request)) {
 676
 677                                                 struct winbindd_cli_state *rem_state = state;
 678
 679                                                 DEBUG(0,("process_loop: Invalid request size (%d) send, should be (%d)\n",
 680                                                                 *(int *) rem_state->buf, sizeof(rem_state->request) ));
 681
 682                                                 state = state_next;
 683                                                 remove_client(rem_state);
 684                                                 continue;
 685                                         }
 686 #endif
 687
 688                                         /* A request packet might be
 689                                            complete */
 690
 691                                         if (state->read_buf_len ==
 692                                             sizeof(state->request)) {
 693                                                 process_packet(state);
 694                                         }
 695                                 }
 696
 697                                 /* Data available for writing */
 698
 699                                 if (FD_ISSET(state->sock, &w_fds))
 700                                         client_write(state);
 701                         }
 702                 }
 703
 704                 /* Check signal handling things */
 705
 706                 if (do_sigterm)
 707                         terminate();
 708
 709                 if (do_sighup) {
 710
 711                         /* Flush winbindd cache */
 712
 713                         flush_caches();
 714                         reload_services_file(True);
 715                         do_sighup = False;
 716                 }
 717
 718                 if (do_sigusr1) {
 719                         print_winbindd_status();
 720                         do_sigusr1 = False;
 721                 }
 722         }
 723 }
 724
 725 /* Main function */
 726
 727 struct winbindd_state server_state;   /* Server state information */
 728
 729 int main(int argc, char **argv)
 730 {
 731         extern pstring global_myname;
 732         extern fstring global_myworkgroup;
 733         extern BOOL append_log;
 734         pstring logfile;
 735         int accept_sock;
 736         BOOL interactive = False;
 737         int opt, new_debuglevel = -1;
 738
 739         /* glibc (?) likes to print "User defined signal 1" and exit if a
 740                 SIGUSR1 is received before a handler is installed */
 741
 742         CatchSignal(SIGUSR1, SIG_IGN);
 743
 744         fault_setup((void (*)(void *))fault_quit );
 745
 746         /* Append to log file by default as we are a single process daemon
 747            program. */
 748
 749         append_log = True;
 750
 751         snprintf(logfile, sizeof(logfile), "%s/log.winbindd", dyn_LOGFILEBASE);
 752         lp_set_logfile(logfile);
 753
 754         /* Initialise for running in non-root mode */
 755
 756         sec_init();
 757
 758         /* Set environment variable so we don't recursively call ourselves.
 759            This may also be useful interactively. */
 760
 761         SETENV(WINBINDD_DONT_ENV, "1", 1);
 762
 763         /* Initialise samba/rpc client stuff */
 764
 765         while ((opt = getopt(argc, argv, "id:s:n")) != EOF) {
 766                 switch (opt) {
 767
 768                         /* Don't become a daemon */
 769                 case 'i':
 770                         interactive = True;
 771                         break;
 772
 773                         /* disable cacheing */
 774                 case 'n':
 775                         opt_nocache = True;
 776                         break;
 777
 778                         /* Run with specified debug level */
 779                 case 'd':
 780                         new_debuglevel = atoi(optarg);
 781                         break;
 782
 783                         /* Load a different smb.conf file */
 784                 case 's':
 785                         pstrcpy(dyn_CONFIGFILE,optarg);
 786                         break;
 787
 788                 default:
 789                         printf("Unknown option %c\n", (char)opt);
 790                         exit(1);
 791                 }
 792         }
 793
 794         snprintf(logfile, sizeof(logfile), "%s/log.winbindd", dyn_LOGFILEBASE);
 795         lp_set_logfile(logfile);
 796         setup_logging("winbindd", interactive);
 797         reopen_logs();
 798
 799         DEBUG(1, ("winbindd version %s started.\n", VERSION ) );
 800         DEBUGADD( 1, ( "Copyright The Samba Team 2000-2001\n" ) );
 801
 802         if (!reload_services_file(False)) {
 803                 DEBUG(0, ("error opening config file\n"));
 804                 exit(1);
 805         }
 806
 807         /* Setup names. */
 808         if (!*global_myname) {
 809                 char *p;
 810
 811                 fstrcpy(global_myname, myhostname());
 812                 p = strchr(global_myname, '.');
 813                 if (p)
 814                         *p = 0;
 815         }
 816
 817         fstrcpy(global_myworkgroup, lp_workgroup());
 818
 819         if (new_debuglevel != -1)
 820                 DEBUGLEVEL = new_debuglevel;
 821
 822         if (!interactive)
 823                 become_daemon();
 824
 825         load_interfaces();
 826
 827         secrets_init();
 828
 829         /* Get list of domains we look up requests for.  This includes the
 830                 domain which we are a member of as well as any trusted
 831                 domains. */
 832
 833         get_domain_info();
 834
 835         ZERO_STRUCT(server_state);
 836
 837         /* Winbind daemon initialisation */
 838
 839         if (!winbindd_param_init())
 840                 return 1;
 841
 842         if (!winbindd_idmap_init())
 843                 return 1;
 844
 845         /* Unblock all signals we are interested in as they may have been
 846            blocked by the parent process. */
 847
 848         BlockSignals(False, SIGINT);
 849         BlockSignals(False, SIGQUIT);
 850         BlockSignals(False, SIGTERM);
 851         BlockSignals(False, SIGUSR1);
 852         BlockSignals(False, SIGHUP);
 853
 854         /* Setup signal handlers */
 855
 856         CatchSignal(SIGINT, termination_handler);      /* Exit on these sigs */
 857         CatchSignal(SIGQUIT, termination_handler);
 858         CatchSignal(SIGTERM, termination_handler);
 859
 860         CatchSignal(SIGPIPE, SIG_IGN);                 /* Ignore sigpipe */
 861
 862         CatchSignal(SIGUSR1, sigusr1_handler);         /* Debugging sigs */
 863         CatchSignal(SIGHUP, sighup_handler);
 864
 865         /* Create UNIX domain socket */
 866
 867         if ((accept_sock = create_sock()) == -1) {
 868                 DEBUG(0, ("failed to create socket\n"));
 869                 return 1;
 870         }
 871
 872         /* Loop waiting for requests */
 873
 874         process_loop(accept_sock);
 875
 876         return 0;
 877 }