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