source3/libsmb/libsmb_context.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    SMB client library implementation
   4    Copyright (C) Andrew Tridgell 1998
   5    Copyright (C) Richard Sharpe 2000, 2002
   6    Copyright (C) John Terpstra 2000
   7    Copyright (C) Tom Jansen (Ninja ISD) 2002
   8    Copyright (C) Derrell Lipman 2003-2008
   9    Copyright (C) Jeremy Allison 2007, 2008
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "libsmbclient.h"
  27 #include "libsmb_internal.h"
  28
  29
  30 /*
  31  * Is the logging working / configfile read ?
  32  */
  33 static bool SMBC_initialized = false;
  34 static unsigned int initialized_ctx_count = 0;
  35 static void *initialized_ctx_count_mutex = NULL;
  36
  37 /*
  38  * Do some module- and library-wide intializations
  39  */
  40 static void
  41 SMBC_module_init(void * punused)
  42 {
  43     bool conf_loaded = False;
  44     char *home = NULL;
  45     TALLOC_CTX *frame = talloc_stackframe();
  46
  47     load_case_tables();
  48
  49     setup_logging("libsmbclient", True);
  50
  51     /* Here we would open the smb.conf file if needed ... */
  52
  53     lp_set_in_client(True);
  54
  55     home = getenv("HOME");
  56     if (home) {
  57         char *conf = NULL;
  58         if (asprintf(&conf, "%s/.smb/smb.conf", home) > 0) {
  59             if (lp_load(conf, True, False, False, True)) {
  60                 conf_loaded = True;
  61             } else {
  62                 DEBUG(5, ("Could not load config file: %s\n",
  63                           conf));
  64             }
  65             SAFE_FREE(conf);
  66         }
  67     }
  68
  69     if (!conf_loaded) {
  70         /*
  71          * Well, if that failed, try the get_dyn_CONFIGFILE
  72          * Which points to the standard locn, and if that
  73          * fails, silently ignore it and use the internal
  74          * defaults ...
  75          */
  76
  77         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, False)) {
  78             DEBUG(5, ("Could not load config file: %s\n",
  79                       get_dyn_CONFIGFILE()));
  80         } else if (home) {
  81             char *conf;
  82             /*
  83              * We loaded the global config file.  Now lets
  84              * load user-specific modifications to the
  85              * global config.
  86              */
  87             if (asprintf(&conf,
  88                          "%s/.smb/smb.conf.append",
  89                          home) > 0) {
  90                 if (!lp_load(conf, True, False, False, False)) {
  91                     DEBUG(10,
  92                           ("Could not append config file: "
  93                            "%s\n",
  94                            conf));
  95                 }
  96                 SAFE_FREE(conf);
  97             }
  98         }
  99     }
 100
 101     load_interfaces();  /* Load the list of interfaces ... */
 102
 103     reopen_logs();  /* Get logging working ... */
 104
 105     /*
 106      * Block SIGPIPE (from lib/util_sock.c: write())
 107      * It is not needed and should not stop execution
 108      */
 109     BlockSignals(True, SIGPIPE);
 110
 111     /* Create the mutex we'll use to protect initialized_ctx_count */
 112     if (SMB_THREAD_CREATE_MUTEX("initialized_ctx_count_mutex",
 113                                 initialized_ctx_count_mutex) != 0) {
 114         smb_panic("SMBC_module_init: "
 115                   "failed to create 'initialized_ctx_count' mutex");
 116     }
 117
 118
 119     TALLOC_FREE(frame);
 120 }
 121
 122
 123 static void
 124 SMBC_module_terminate(void)
 125 {
 126     secrets_shutdown();
 127     gfree_all();
 128     SMBC_initialized = false;
 129 }
 130
 131
 132 /*
 133  * Get a new empty handle to fill in with your own info
 134  */
 135 SMBCCTX *
 136 smbc_new_context(void)
 137 {
 138         SMBCCTX *context;
 139
 140         /* The first call to this function should initialize the module */
 141         SMB_THREAD_ONCE(&SMBC_initialized, SMBC_module_init, NULL);
 142
 143         /*
 144          * All newly added context fields should be placed in
 145          * SMBC_internal_data, not directly in SMBCCTX.
 146          */
 147         context = SMB_MALLOC_P(SMBCCTX);
 148         if (!context) {
 149                 errno = ENOMEM;
 150                 return NULL;
 151         }
 152
 153         ZERO_STRUCTP(context);
 154
 155         context->internal = SMB_MALLOC_P(struct SMBC_internal_data);
 156         if (!context->internal) {
 157                 SAFE_FREE(context);
 158                 errno = ENOMEM;
 159                 return NULL;
 160         }
 161
 162         /* Initialize the context and establish reasonable defaults */
 163         ZERO_STRUCTP(context->internal);
 164
 165         smbc_setDebug(context, 0);
 166         smbc_setTimeout(context, 20000);
 167
 168         smbc_setOptionFullTimeNames(context, False);
 169         smbc_setOptionOpenShareMode(context, SMBC_SHAREMODE_DENY_NONE);
 170         smbc_setOptionSmbEncryptionLevel(context, SMBC_ENCRYPTLEVEL_NONE);
 171         smbc_setOptionCaseSensitive(context, False);
 172         smbc_setOptionBrowseMaxLmbCount(context, 3);    /* # LMBs to query */
 173         smbc_setOptionUrlEncodeReaddirEntries(context, False);
 174         smbc_setOptionOneSharePerServer(context, False);
 175
 176         smbc_setFunctionAuthData(context, SMBC_get_auth_data);
 177         smbc_setFunctionCheckServer(context, SMBC_check_server);
 178         smbc_setFunctionRemoveUnusedServer(context, SMBC_remove_unused_server);
 179
 180         smbc_setOptionUserData(context, NULL);
 181         smbc_setFunctionAddCachedServer(context, SMBC_add_cached_server);
 182         smbc_setFunctionGetCachedServer(context, SMBC_get_cached_server);
 183         smbc_setFunctionRemoveCachedServer(context, SMBC_remove_cached_server);
 184         smbc_setFunctionPurgeCachedServers(context, SMBC_purge_cached_servers);
 185
 186         smbc_setFunctionOpen(context, SMBC_open_ctx);
 187         smbc_setFunctionCreat(context, SMBC_creat_ctx);
 188         smbc_setFunctionRead(context, SMBC_read_ctx);
 189         smbc_setFunctionWrite(context, SMBC_write_ctx);
 190         smbc_setFunctionClose(context, SMBC_close_ctx);
 191         smbc_setFunctionUnlink(context, SMBC_unlink_ctx);
 192         smbc_setFunctionRename(context, SMBC_rename_ctx);
 193         smbc_setFunctionLseek(context, SMBC_lseek_ctx);
 194         smbc_setFunctionFtruncate(context, SMBC_ftruncate_ctx);
 195         smbc_setFunctionStat(context, SMBC_stat_ctx);
 196         smbc_setFunctionStatVFS(context, SMBC_statvfs_ctx);
 197         smbc_setFunctionFstatVFS(context, SMBC_fstatvfs_ctx);
 198         smbc_setFunctionFstat(context, SMBC_fstat_ctx);
 199         smbc_setFunctionOpendir(context, SMBC_opendir_ctx);
 200         smbc_setFunctionClosedir(context, SMBC_closedir_ctx);
 201         smbc_setFunctionReaddir(context, SMBC_readdir_ctx);
 202         smbc_setFunctionGetdents(context, SMBC_getdents_ctx);
 203         smbc_setFunctionMkdir(context, SMBC_mkdir_ctx);
 204         smbc_setFunctionRmdir(context, SMBC_rmdir_ctx);
 205         smbc_setFunctionTelldir(context, SMBC_telldir_ctx);
 206         smbc_setFunctionLseekdir(context, SMBC_lseekdir_ctx);
 207         smbc_setFunctionFstatdir(context, SMBC_fstatdir_ctx);
 208         smbc_setFunctionChmod(context, SMBC_chmod_ctx);
 209         smbc_setFunctionUtimes(context, SMBC_utimes_ctx);
 210         smbc_setFunctionSetxattr(context, SMBC_setxattr_ctx);
 211         smbc_setFunctionGetxattr(context, SMBC_getxattr_ctx);
 212         smbc_setFunctionRemovexattr(context, SMBC_removexattr_ctx);
 213         smbc_setFunctionListxattr(context, SMBC_listxattr_ctx);
 214
 215         smbc_setFunctionOpenPrintJob(context, SMBC_open_print_job_ctx);
 216         smbc_setFunctionPrintFile(context, SMBC_print_file_ctx);
 217         smbc_setFunctionListPrintJobs(context, SMBC_list_print_jobs_ctx);
 218         smbc_setFunctionUnlinkPrintJob(context, SMBC_unlink_print_job_ctx);
 219
 220         return context;
 221 }
 222
 223 /*
 224  * Free a context
 225  *
 226  * Returns 0 on success. Otherwise returns 1, the SMBCCTX is _not_ freed
 227  * and thus you'll be leaking memory if not handled properly.
 228  *
 229  */
 230 int
 231 smbc_free_context(SMBCCTX *context,
 232                   int shutdown_ctx)
 233 {
 234         if (!context) {
 235                 errno = EBADF;
 236                 return 1;
 237         }
 238
 239         if (shutdown_ctx) {
 240                 SMBCFILE * f;
 241                 DEBUG(1,("Performing aggressive shutdown.\n"));
 242
 243                 f = context->internal->files;
 244                 while (f) {
 245                         smbc_getFunctionClose(context)(context, f);
 246                         f = f->next;
 247                 }
 248                 context->internal->files = NULL;
 249
 250                 /* First try to remove the servers the nice way. */
 251                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 252                         SMBCSRV * s;
 253                         SMBCSRV * next;
 254                         DEBUG(1, ("Could not purge all servers, "
 255                                   "Nice way shutdown failed.\n"));
 256                         s = context->internal->servers;
 257                         while (s) {
 258                                 DEBUG(1, ("Forced shutdown: %p (fd=%d)\n",
 259                                           s, s->cli->fd));
 260                                 cli_shutdown(s->cli);
 261                                 smbc_getFunctionRemoveCachedServer(context)(context,
 262                                                                          s);
 263                                 next = s->next;
 264                                 DLIST_REMOVE(context->internal->servers, s);
 265                                 SAFE_FREE(s);
 266                                 s = next;
 267                         }
 268                         context->internal->servers = NULL;
 269                 }
 270         }
 271         else {
 272                 /* This is the polite way */
 273                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 274                         DEBUG(1, ("Could not purge all servers, "
 275                                   "free_context failed.\n"));
 276                         errno = EBUSY;
 277                         return 1;
 278                 }
 279                 if (context->internal->servers) {
 280                         DEBUG(1, ("Active servers in context, "
 281                                   "free_context failed.\n"));
 282                         errno = EBUSY;
 283                         return 1;
 284                 }
 285                 if (context->internal->files) {
 286                         DEBUG(1, ("Active files in context, "
 287                                   "free_context failed.\n"));
 288                         errno = EBUSY;
 289                         return 1;
 290                 }
 291         }
 292
 293         /* Things we have to clean up */
 294         free(smbc_getWorkgroup(context));
 295         smbc_setWorkgroup(context, NULL);
 296
 297         free(smbc_getNetbiosName(context));
 298         smbc_setNetbiosName(context, NULL);
 299
 300         free(smbc_getUser(context));
 301         smbc_setUser(context, NULL);
 302
 303         DEBUG(3, ("Context %p successfully freed\n", context));
 304
 305         /* Free any DFS auth context. */
 306         TALLOC_FREE(context->internal->auth_info);
 307
 308         SAFE_FREE(context->internal);
 309         SAFE_FREE(context);
 310
 311         /* Protect access to the count of contexts in use */
 312         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 313                 smb_panic("error locking 'initialized_ctx_count'");
 314         }
 315
 316         if (initialized_ctx_count) {
 317                 initialized_ctx_count--;
 318         }
 319
 320         if (initialized_ctx_count == 0) {
 321             SMBC_module_terminate();
 322         }
 323
 324         /* Unlock the mutex */
 325         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 326                 smb_panic("error unlocking 'initialized_ctx_count'");
 327         }
 328
 329         return 0;
 330 }
 331
 332
 333 /**
 334  * Deprecated interface.  Do not use.  Instead, use the various
 335  * smbc_setOption*() functions or smbc_setFunctionAuthDataWithContext().
 336  */
 337 void
 338 smbc_option_set(SMBCCTX *context,
 339                 char *option_name,
 340                 ... /* option_value */)
 341 {
 342         va_list ap;
 343         union {
 344                 int i;
 345                 bool b;
 346                 smbc_get_auth_data_with_context_fn auth_fn;
 347                 void *v;
 348                 const char *s;
 349         } option_value;
 350
 351         va_start(ap, option_name);
 352
 353         if (strcmp(option_name, "debug_to_stderr") == 0) {
 354                 option_value.b = (bool) va_arg(ap, int);
 355                 smbc_setOptionDebugToStderr(context, option_value.b);
 356
 357         } else if (strcmp(option_name, "full_time_names") == 0) {
 358                 option_value.b = (bool) va_arg(ap, int);
 359                 smbc_setOptionFullTimeNames(context, option_value.b);
 360
 361         } else if (strcmp(option_name, "open_share_mode") == 0) {
 362                 option_value.i = va_arg(ap, int);
 363                 smbc_setOptionOpenShareMode(context, option_value.i);
 364
 365         } else if (strcmp(option_name, "auth_function") == 0) {
 366                 option_value.auth_fn =
 367                         va_arg(ap, smbc_get_auth_data_with_context_fn);
 368                 smbc_setFunctionAuthDataWithContext(context, option_value.auth_fn);
 369
 370         } else if (strcmp(option_name, "user_data") == 0) {
 371                 option_value.v = va_arg(ap, void *);
 372                 smbc_setOptionUserData(context, option_value.v);
 373
 374         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 375                 option_value.s = va_arg(ap, const char *);
 376                 if (strcmp(option_value.s, "none") == 0) {
 377                         smbc_setOptionSmbEncryptionLevel(context,
 378                                                          SMBC_ENCRYPTLEVEL_NONE);
 379                 } else if (strcmp(option_value.s, "request") == 0) {
 380                         smbc_setOptionSmbEncryptionLevel(context,
 381                                                          SMBC_ENCRYPTLEVEL_REQUEST);
 382                 } else if (strcmp(option_value.s, "require") == 0) {
 383                         smbc_setOptionSmbEncryptionLevel(context,
 384                                                          SMBC_ENCRYPTLEVEL_REQUIRE);
 385                 }
 386
 387         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 388                 option_value.i = va_arg(ap, int);
 389                 smbc_setOptionBrowseMaxLmbCount(context, option_value.i);
 390
 391         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 392                 option_value.b = (bool) va_arg(ap, int);
 393                 smbc_setOptionUrlEncodeReaddirEntries(context, option_value.b);
 394
 395         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 396                 option_value.b = (bool) va_arg(ap, int);
 397                 smbc_setOptionOneSharePerServer(context, option_value.b);
 398
 399         } else if (strcmp(option_name, "use_kerberos") == 0) {
 400                 option_value.b = (bool) va_arg(ap, int);
 401                 smbc_setOptionUseKerberos(context, option_value.b);
 402
 403         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 404                 option_value.b = (bool) va_arg(ap, int);
 405                 smbc_setOptionFallbackAfterKerberos(context, option_value.b);
 406
 407         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 408                 option_value.b = (bool) va_arg(ap, int);
 409                 smbc_setOptionNoAutoAnonymousLogin(context, option_value.b);
 410         }
 411
 412         va_end(ap);
 413 }
 414
 415
 416 /*
 417  * Deprecated interface.  Do not use.  Instead, use the various
 418  * smbc_getOption*() functions.
 419  */
 420 void *
 421 smbc_option_get(SMBCCTX *context,
 422                 char *option_name)
 423 {
 424         if (strcmp(option_name, "debug_stderr") == 0) {
 425 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 426                 return (void *) (intptr_t) smbc_getOptionDebugToStderr(context);
 427 #else
 428                 return (void *) smbc_getOptionDebugToStderr(context);
 429 #endif
 430
 431         } else if (strcmp(option_name, "full_time_names") == 0) {
 432 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 433                 return (void *) (intptr_t) smbc_getOptionFullTimeNames(context);
 434 #else
 435                 return (void *) smbc_getOptionFullTimeNames(context);
 436 #endif
 437
 438         } else if (strcmp(option_name, "open_share_mode") == 0) {
 439 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 440                 return (void *) (intptr_t) smbc_getOptionOpenShareMode(context);
 441 #else
 442                 return (void *) smbc_getOptionOpenShareMode(context);
 443 #endif
 444
 445         } else if (strcmp(option_name, "auth_function") == 0) {
 446                 return (void *) smbc_getFunctionAuthDataWithContext(context);
 447
 448         } else if (strcmp(option_name, "user_data") == 0) {
 449                 return smbc_getOptionUserData(context);
 450
 451         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 452                 switch(smbc_getOptionSmbEncryptionLevel(context))
 453                 {
 454                 case 0:
 455                         return (void *) "none";
 456                 case 1:
 457                         return (void *) "request";
 458                 case 2:
 459                         return (void *) "require";
 460                 }
 461
 462         } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
 463                 SMBCSRV *s;
 464                 unsigned int num_servers = 0;
 465
 466                 for (s = context->internal->servers; s; s = s->next) {
 467                         num_servers++;
 468                         if (s->cli->trans_enc_state == NULL) {
 469                                 return (void *)false;
 470                         }
 471                 }
 472 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 473                 return (void *) (intptr_t) (bool) (num_servers > 0);
 474 #else
 475                 return (void *) (bool) (num_servers > 0);
 476 #endif
 477
 478         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 479 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 480                 return (void *) (intptr_t) smbc_getOptionBrowseMaxLmbCount(context);
 481 #else
 482                 return (void *) smbc_getOptionBrowseMaxLmbCount(context);
 483 #endif
 484
 485         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 486 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 487                 return (void *)(intptr_t) smbc_getOptionUrlEncodeReaddirEntries(context);
 488 #else
 489                 return (void *) (bool) smbc_getOptionUrlEncodeReaddirEntries(context);
 490 #endif
 491
 492         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 493 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 494                 return (void *) (intptr_t) smbc_getOptionOneSharePerServer(context);
 495 #else
 496                 return (void *) (bool) smbc_getOptionOneSharePerServer(context);
 497 #endif
 498
 499         } else if (strcmp(option_name, "use_kerberos") == 0) {
 500 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 501                 return (void *) (intptr_t) smbc_getOptionUseKerberos(context);
 502 #else
 503                 return (void *) (bool) smbc_getOptionUseKerberos(context);
 504 #endif
 505
 506         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 507 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 508                 return (void *)(intptr_t) smbc_getOptionFallbackAfterKerberos(context);
 509 #else
 510                 return (void *) (bool) smbc_getOptionFallbackAfterKerberos(context);
 511 #endif
 512
 513         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 514 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 515                 return (void *) (intptr_t) smbc_getOptionNoAutoAnonymousLogin(context);
 516 #else
 517                 return (void *) (bool) smbc_getOptionNoAutoAnonymousLogin(context);
 518 #endif
 519         }
 520
 521         return NULL;
 522 }
 523
 524
 525 /*
 526  * Initialize the library, etc.
 527  *
 528  * We accept a struct containing handle information.
 529  * valid values for info->debug from 0 to 100,
 530  * and insist that info->fn must be non-null.
 531  */
 532 SMBCCTX *
 533 smbc_init_context(SMBCCTX *context)
 534 {
 535         int pid;
 536         char *user = NULL;
 537
 538         if (!context) {
 539                 errno = EBADF;
 540                 return NULL;
 541         }
 542
 543         /* Do not initialise the same client twice */
 544         if (context->internal->initialized) {
 545                 return NULL;
 546         }
 547
 548         if (context->internal->debug_stderr) {
 549             /*
 550              * Hmmm... Do we want a unique dbf per-thread? For now, we'll just
 551              * leave it up to the user. If any one context spefies debug to
 552              * stderr then all will be.
 553              */
 554             dbf = x_stderr;
 555             x_setbuf(x_stderr, NULL);
 556         }
 557
 558         if ((!smbc_getFunctionAuthData(context) &&
 559              !smbc_getFunctionAuthDataWithContext(context)) ||
 560             smbc_getDebug(context) < 0 ||
 561             smbc_getDebug(context) > 100) {
 562
 563                 errno = EINVAL;
 564                 return NULL;
 565
 566         }
 567
 568         if (!smbc_getUser(context)) {
 569                 /*
 570                  * FIXME: Is this the best way to get the user info?
 571                  */
 572                 user = getenv("USER");
 573                 /* walk around as "guest" if no username can be found */
 574                 if (!user) {
 575                         user = SMB_STRDUP("guest");
 576                 } else {
 577                         user = SMB_STRDUP(user);
 578                 }
 579
 580                 if (!user) {
 581                         errno = ENOMEM;
 582                         return NULL;
 583                 }
 584
 585                 smbc_setUser(context, user);
 586         }
 587
 588         if (!smbc_getNetbiosName(context)) {
 589                 /*
 590                  * We try to get our netbios name from the config. If that
 591                  * fails we fall back on constructing our netbios name from
 592                  * our hostname etc
 593                  */
 594                 char *netbios_name;
 595                 if (global_myname()) {
 596                         netbios_name = SMB_STRDUP(global_myname());
 597                 } else {
 598                         /*
 599                          * Hmmm, I want to get hostname as well, but I am too
 600                          * lazy for the moment
 601                          */
 602                         pid = sys_getpid();
 603                         netbios_name = (char *)SMB_MALLOC(17);
 604                         if (!netbios_name) {
 605                                 errno = ENOMEM;
 606                                 return NULL;
 607                         }
 608                         slprintf(netbios_name, 16,
 609                                  "smbc%s%d", smbc_getUser(context), pid);
 610                 }
 611
 612                 if (!netbios_name) {
 613                         errno = ENOMEM;
 614                         return NULL;
 615                 }
 616
 617                 smbc_setNetbiosName(context, netbios_name);
 618         }
 619
 620         DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
 621
 622         if (!smbc_getWorkgroup(context)) {
 623                 char *workgroup;
 624
 625                 if (lp_workgroup()) {
 626                         workgroup = SMB_STRDUP(lp_workgroup());
 627                 }
 628                 else {
 629                         /* TODO: Think about a decent default workgroup */
 630                         workgroup = SMB_STRDUP("samba");
 631                 }
 632
 633                 if (!workgroup) {
 634                         errno = ENOMEM;
 635                         return NULL;
 636                 }
 637
 638                 smbc_setWorkgroup(context, workgroup);
 639         }
 640
 641         DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
 642
 643         /* shortest timeout is 1 second */
 644         if (smbc_getTimeout(context) > 0 && smbc_getTimeout(context) < 1000)
 645                 smbc_setTimeout(context, 1000);
 646
 647         context->internal->initialized = True;
 648
 649         /* Protect access to the count of contexts in use */
 650         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 651                 smb_panic("error locking 'initialized_ctx_count'");
 652         }
 653
 654         initialized_ctx_count++;
 655
 656         /* Unlock the mutex */
 657         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 658                 smb_panic("error unlocking 'initialized_ctx_count'");
 659         }
 660
 661         return context;
 662 }
 663
 664
 665 /* Return the verion of samba, and thus libsmbclient */
 666 const char *
 667 smbc_version(void)
 668 {
 669         return samba_version_string();
 670 }
 671
 672 /*
 673  * Set the credentials so DFS will work when following referrals.
 674  * This function is broken and must be removed. No SMBCCTX arg...
 675  * JRA.
 676  */
 677
 678 void
 679 smbc_set_credentials(const char *workgroup,
 680                         const char *user,
 681                         const char *password,
 682                         smbc_bool use_kerberos,
 683                         const char *signing_state)
 684 {
 685         d_printf("smbc_set_credentials is obsolete. Replace with smbc_set_credentials_with_fallback().\n");
 686 }
 687
 688 void smbc_set_credentials_with_fallback(SMBCCTX *context,
 689                                         const char *workgroup,
 690                                         const char *user,
 691                                         const char *password)
 692 {
 693         smbc_bool use_kerberos = false;
 694         const char *signing_state = "off";
 695         struct user_auth_info *auth_info = NULL;
 696
 697         if (! context) {
 698
 699                 return;
 700         }
 701
 702         if (! workgroup || ! *workgroup) {
 703                 workgroup = smbc_getWorkgroup(context);
 704         }
 705
 706         if (! user) {
 707                 user = smbc_getUser(context);
 708         }
 709
 710         if (! password) {
 711                 password = "";
 712         }
 713
 714         auth_info = user_auth_info_init(NULL);
 715
 716         if (! auth_info) {
 717                 DEBUG(0, ("smbc_set_credentials_with_fallback: allocation fail\n"));
 718                 return;
 719         }
 720
 721         if (smbc_getOptionUseKerberos(context)) {
 722                 use_kerberos = True;
 723         }
 724
 725         if (lp_client_signing()) {
 726                 signing_state = "on";
 727         }
 728
 729         if (lp_client_signing() == Required) {
 730                 signing_state = "force";
 731         }
 732
 733         set_cmdline_auth_info_username(auth_info, user);
 734         set_cmdline_auth_info_password(auth_info, password);
 735         set_cmdline_auth_info_use_kerberos(auth_info, use_kerberos);
 736         set_cmdline_auth_info_signing_state(auth_info, signing_state);
 737         set_cmdline_auth_info_fallback_after_kerberos(auth_info,
 738                 smbc_getOptionFallbackAfterKerberos(context));
 739         set_global_myworkgroup(workgroup);
 740
 741         TALLOC_FREE(context->internal->auth_info);
 742
 743         context->internal->auth_info = auth_info;
 744 }