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 #include "secrets.h"
  29
  30
  31 /*
  32  * Is the logging working / configfile read ?
  33  */
  34 static bool SMBC_initialized = false;
  35 static unsigned int initialized_ctx_count = 0;
  36 static void *initialized_ctx_count_mutex = NULL;
  37
  38 /*
  39  * Do some module- and library-wide intializations
  40  */
  41 static void
  42 SMBC_module_init(void * punused)
  43 {
  44     bool conf_loaded = False;
  45     char *home = NULL;
  46     TALLOC_CTX *frame = talloc_stackframe();
  47
  48     load_case_tables_library();
  49
  50     setup_logging("libsmbclient", DEBUG_STDOUT);
  51
  52     /* Here we would open the smb.conf file if needed ... */
  53
  54     lp_set_in_client(True);
  55
  56     home = getenv("HOME");
  57     if (home) {
  58         char *conf = NULL;
  59         if (asprintf(&conf, "%s/.smb/smb.conf", home) > 0) {
  60             if (lp_load(conf, True, False, False, True)) {
  61                 conf_loaded = True;
  62             } else {
  63                 DEBUG(5, ("Could not load config file: %s\n",
  64                           conf));
  65             }
  66             SAFE_FREE(conf);
  67         }
  68     }
  69
  70     if (!conf_loaded) {
  71         /*
  72          * Well, if that failed, try the get_dyn_CONFIGFILE
  73          * Which points to the standard locn, and if that
  74          * fails, silently ignore it and use the internal
  75          * defaults ...
  76          */
  77
  78         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, False)) {
  79             DEBUG(5, ("Could not load config file: %s\n",
  80                       get_dyn_CONFIGFILE()));
  81         } else if (home) {
  82             char *conf;
  83             /*
  84              * We loaded the global config file.  Now lets
  85              * load user-specific modifications to the
  86              * global config.
  87              */
  88             if (asprintf(&conf,
  89                          "%s/.smb/smb.conf.append",
  90                          home) > 0) {
  91                 if (!lp_load(conf, True, False, False, False)) {
  92                     DEBUG(10,
  93                           ("Could not append config file: "
  94                            "%s\n",
  95                            conf));
  96                 }
  97                 SAFE_FREE(conf);
  98             }
  99         }
 100     }
 101
 102     load_interfaces();  /* Load the list of interfaces ... */
 103
 104     reopen_logs();  /* Get logging working ... */
 105
 106     /*
 107      * Block SIGPIPE (from lib/util_sock.c: write())
 108      * It is not needed and should not stop execution
 109      */
 110     BlockSignals(True, SIGPIPE);
 111
 112     /* Create the mutex we'll use to protect initialized_ctx_count */
 113     if (SMB_THREAD_CREATE_MUTEX("initialized_ctx_count_mutex",
 114                                 initialized_ctx_count_mutex) != 0) {
 115         smb_panic("SMBC_module_init: "
 116                   "failed to create 'initialized_ctx_count' mutex");
 117     }
 118
 119
 120     TALLOC_FREE(frame);
 121 }
 122
 123
 124 static void
 125 SMBC_module_terminate(void)
 126 {
 127     secrets_shutdown();
 128     gfree_all();
 129     SMBC_initialized = false;
 130 }
 131
 132
 133 /*
 134  * Get a new empty handle to fill in with your own info
 135  */
 136 SMBCCTX *
 137 smbc_new_context(void)
 138 {
 139         SMBCCTX *context;
 140
 141         /* The first call to this function should initialize the module */
 142         SMB_THREAD_ONCE(&SMBC_initialized, SMBC_module_init, NULL);
 143
 144         /*
 145          * All newly added context fields should be placed in
 146          * SMBC_internal_data, not directly in SMBCCTX.
 147          */
 148         context = SMB_MALLOC_P(SMBCCTX);
 149         if (!context) {
 150                 errno = ENOMEM;
 151                 return NULL;
 152         }
 153
 154         ZERO_STRUCTP(context);
 155
 156         context->internal = SMB_MALLOC_P(struct SMBC_internal_data);
 157         if (!context->internal) {
 158                 SAFE_FREE(context);
 159                 errno = ENOMEM;
 160                 return NULL;
 161         }
 162
 163         /* Initialize the context and establish reasonable defaults */
 164         ZERO_STRUCTP(context->internal);
 165
 166         smbc_setDebug(context, 0);
 167         smbc_setTimeout(context, 20000);
 168
 169         smbc_setOptionFullTimeNames(context, False);
 170         smbc_setOptionOpenShareMode(context, SMBC_SHAREMODE_DENY_NONE);
 171         smbc_setOptionSmbEncryptionLevel(context, SMBC_ENCRYPTLEVEL_NONE);
 172         smbc_setOptionUseCCache(context, True);
 173         smbc_setOptionCaseSensitive(context, False);
 174         smbc_setOptionBrowseMaxLmbCount(context, 3);    /* # LMBs to query */
 175         smbc_setOptionUrlEncodeReaddirEntries(context, False);
 176         smbc_setOptionOneSharePerServer(context, False);
 177         if (getenv("LIBSMBCLIENT_NO_CCACHE") == NULL) {
 178                 smbc_setOptionUseCCache(context, true);
 179         }
 180
 181         smbc_setFunctionAuthData(context, SMBC_get_auth_data);
 182         smbc_setFunctionCheckServer(context, SMBC_check_server);
 183         smbc_setFunctionRemoveUnusedServer(context, SMBC_remove_unused_server);
 184
 185         smbc_setOptionUserData(context, NULL);
 186         smbc_setFunctionAddCachedServer(context, SMBC_add_cached_server);
 187         smbc_setFunctionGetCachedServer(context, SMBC_get_cached_server);
 188         smbc_setFunctionRemoveCachedServer(context, SMBC_remove_cached_server);
 189         smbc_setFunctionPurgeCachedServers(context, SMBC_purge_cached_servers);
 190
 191         smbc_setFunctionOpen(context, SMBC_open_ctx);
 192         smbc_setFunctionCreat(context, SMBC_creat_ctx);
 193         smbc_setFunctionRead(context, SMBC_read_ctx);
 194         smbc_setFunctionWrite(context, SMBC_write_ctx);
 195         smbc_setFunctionClose(context, SMBC_close_ctx);
 196         smbc_setFunctionUnlink(context, SMBC_unlink_ctx);
 197         smbc_setFunctionRename(context, SMBC_rename_ctx);
 198         smbc_setFunctionLseek(context, SMBC_lseek_ctx);
 199         smbc_setFunctionFtruncate(context, SMBC_ftruncate_ctx);
 200         smbc_setFunctionStat(context, SMBC_stat_ctx);
 201         smbc_setFunctionStatVFS(context, SMBC_statvfs_ctx);
 202         smbc_setFunctionFstatVFS(context, SMBC_fstatvfs_ctx);
 203         smbc_setFunctionFstat(context, SMBC_fstat_ctx);
 204         smbc_setFunctionOpendir(context, SMBC_opendir_ctx);
 205         smbc_setFunctionClosedir(context, SMBC_closedir_ctx);
 206         smbc_setFunctionReaddir(context, SMBC_readdir_ctx);
 207         smbc_setFunctionGetdents(context, SMBC_getdents_ctx);
 208         smbc_setFunctionMkdir(context, SMBC_mkdir_ctx);
 209         smbc_setFunctionRmdir(context, SMBC_rmdir_ctx);
 210         smbc_setFunctionTelldir(context, SMBC_telldir_ctx);
 211         smbc_setFunctionLseekdir(context, SMBC_lseekdir_ctx);
 212         smbc_setFunctionFstatdir(context, SMBC_fstatdir_ctx);
 213         smbc_setFunctionChmod(context, SMBC_chmod_ctx);
 214         smbc_setFunctionUtimes(context, SMBC_utimes_ctx);
 215         smbc_setFunctionSetxattr(context, SMBC_setxattr_ctx);
 216         smbc_setFunctionGetxattr(context, SMBC_getxattr_ctx);
 217         smbc_setFunctionRemovexattr(context, SMBC_removexattr_ctx);
 218         smbc_setFunctionListxattr(context, SMBC_listxattr_ctx);
 219
 220         smbc_setFunctionOpenPrintJob(context, SMBC_open_print_job_ctx);
 221         smbc_setFunctionPrintFile(context, SMBC_print_file_ctx);
 222         smbc_setFunctionListPrintJobs(context, SMBC_list_print_jobs_ctx);
 223         smbc_setFunctionUnlinkPrintJob(context, SMBC_unlink_print_job_ctx);
 224
 225         return context;
 226 }
 227
 228 /*
 229  * Free a context
 230  *
 231  * Returns 0 on success. Otherwise returns 1, the SMBCCTX is _not_ freed
 232  * and thus you'll be leaking memory if not handled properly.
 233  *
 234  */
 235 int
 236 smbc_free_context(SMBCCTX *context,
 237                   int shutdown_ctx)
 238 {
 239         if (!context) {
 240                 errno = EBADF;
 241                 return 1;
 242         }
 243
 244         if (shutdown_ctx) {
 245                 SMBCFILE * f;
 246                 DEBUG(1,("Performing aggressive shutdown.\n"));
 247
 248                 f = context->internal->files;
 249                 while (f) {
 250                         smbc_getFunctionClose(context)(context, f);
 251                         f = f->next;
 252                 }
 253                 context->internal->files = NULL;
 254
 255                 /* First try to remove the servers the nice way. */
 256                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 257                         SMBCSRV * s;
 258                         SMBCSRV * next;
 259                         DEBUG(1, ("Could not purge all servers, "
 260                                   "Nice way shutdown failed.\n"));
 261                         s = context->internal->servers;
 262                         while (s) {
 263                                 DEBUG(1, ("Forced shutdown: %p (fd=%d)\n",
 264                                           s, s->cli->fd));
 265                                 cli_shutdown(s->cli);
 266                                 smbc_getFunctionRemoveCachedServer(context)(context,
 267                                                                          s);
 268                                 next = s->next;
 269                                 DLIST_REMOVE(context->internal->servers, s);
 270                                 SAFE_FREE(s);
 271                                 s = next;
 272                         }
 273                         context->internal->servers = NULL;
 274                 }
 275         }
 276         else {
 277                 /* This is the polite way */
 278                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 279                         DEBUG(1, ("Could not purge all servers, "
 280                                   "free_context failed.\n"));
 281                         errno = EBUSY;
 282                         return 1;
 283                 }
 284                 if (context->internal->servers) {
 285                         DEBUG(1, ("Active servers in context, "
 286                                   "free_context failed.\n"));
 287                         errno = EBUSY;
 288                         return 1;
 289                 }
 290                 if (context->internal->files) {
 291                         DEBUG(1, ("Active files in context, "
 292                                   "free_context failed.\n"));
 293                         errno = EBUSY;
 294                         return 1;
 295                 }
 296         }
 297
 298         /* Things we have to clean up */
 299         smbc_setWorkgroup(context, NULL);
 300         smbc_setNetbiosName(context, NULL);
 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, "use_ccache") == 0) {
 408                 option_value.b = (bool) va_arg(ap, int);
 409                 smbc_setOptionUseCCache(context, option_value.b);
 410
 411         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 412                 option_value.b = (bool) va_arg(ap, int);
 413                 smbc_setOptionNoAutoAnonymousLogin(context, option_value.b);
 414         }
 415
 416         va_end(ap);
 417 }
 418
 419
 420 /*
 421  * Deprecated interface.  Do not use.  Instead, use the various
 422  * smbc_getOption*() functions.
 423  */
 424 void *
 425 smbc_option_get(SMBCCTX *context,
 426                 char *option_name)
 427 {
 428         if (strcmp(option_name, "debug_stderr") == 0) {
 429 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 430                 return (void *) (intptr_t) smbc_getOptionDebugToStderr(context);
 431 #else
 432                 return (void *) smbc_getOptionDebugToStderr(context);
 433 #endif
 434
 435         } else if (strcmp(option_name, "full_time_names") == 0) {
 436 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 437                 return (void *) (intptr_t) smbc_getOptionFullTimeNames(context);
 438 #else
 439                 return (void *) smbc_getOptionFullTimeNames(context);
 440 #endif
 441
 442         } else if (strcmp(option_name, "open_share_mode") == 0) {
 443 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 444                 return (void *) (intptr_t) smbc_getOptionOpenShareMode(context);
 445 #else
 446                 return (void *) smbc_getOptionOpenShareMode(context);
 447 #endif
 448
 449         } else if (strcmp(option_name, "auth_function") == 0) {
 450                 return (void *) smbc_getFunctionAuthDataWithContext(context);
 451
 452         } else if (strcmp(option_name, "user_data") == 0) {
 453                 return smbc_getOptionUserData(context);
 454
 455         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 456                 switch(smbc_getOptionSmbEncryptionLevel(context))
 457                 {
 458                 case 0:
 459                         return (void *) "none";
 460                 case 1:
 461                         return (void *) "request";
 462                 case 2:
 463                         return (void *) "require";
 464                 }
 465
 466         } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
 467                 SMBCSRV *s;
 468                 unsigned int num_servers = 0;
 469
 470                 for (s = context->internal->servers; s; s = s->next) {
 471                         num_servers++;
 472                         if (s->cli->trans_enc_state == NULL) {
 473                                 return (void *)false;
 474                         }
 475                 }
 476 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 477                 return (void *) (intptr_t) (bool) (num_servers > 0);
 478 #else
 479                 return (void *) (bool) (num_servers > 0);
 480 #endif
 481
 482         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 483 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 484                 return (void *) (intptr_t) smbc_getOptionBrowseMaxLmbCount(context);
 485 #else
 486                 return (void *) smbc_getOptionBrowseMaxLmbCount(context);
 487 #endif
 488
 489         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 490 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 491                 return (void *)(intptr_t) smbc_getOptionUrlEncodeReaddirEntries(context);
 492 #else
 493                 return (void *) (bool) smbc_getOptionUrlEncodeReaddirEntries(context);
 494 #endif
 495
 496         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 497 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 498                 return (void *) (intptr_t) smbc_getOptionOneSharePerServer(context);
 499 #else
 500                 return (void *) (bool) smbc_getOptionOneSharePerServer(context);
 501 #endif
 502
 503         } else if (strcmp(option_name, "use_kerberos") == 0) {
 504 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 505                 return (void *) (intptr_t) smbc_getOptionUseKerberos(context);
 506 #else
 507                 return (void *) (bool) smbc_getOptionUseKerberos(context);
 508 #endif
 509
 510         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 511 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 512                 return (void *)(intptr_t) smbc_getOptionFallbackAfterKerberos(context);
 513 #else
 514                 return (void *) (bool) smbc_getOptionFallbackAfterKerberos(context);
 515 #endif
 516
 517         } else if (strcmp(option_name, "use_ccache") == 0) {
 518 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 519                 return (void *) (intptr_t) smbc_getOptionUseCCache(context);
 520 #else
 521                 return (void *) (bool) smbc_getOptionUseCCache(context);
 522 #endif
 523
 524         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 525 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 526                 return (void *) (intptr_t) smbc_getOptionNoAutoAnonymousLogin(context);
 527 #else
 528                 return (void *) (bool) smbc_getOptionNoAutoAnonymousLogin(context);
 529 #endif
 530         }
 531
 532         return NULL;
 533 }
 534
 535
 536 /*
 537  * Initialize the library, etc.
 538  *
 539  * We accept a struct containing handle information.
 540  * valid values for info->debug from 0 to 100,
 541  * and insist that info->fn must be non-null.
 542  */
 543 SMBCCTX *
 544 smbc_init_context(SMBCCTX *context)
 545 {
 546         int pid;
 547
 548         if (!context) {
 549                 errno = EBADF;
 550                 return NULL;
 551         }
 552
 553         /* Do not initialise the same client twice */
 554         if (context->internal->initialized) {
 555                 return 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                 char *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                 SAFE_FREE(user);
 587
 588                 if (!smbc_getUser(context)) {
 589                         errno = ENOMEM;
 590                         return NULL;
 591                 }
 592         }
 593
 594         if (!smbc_getNetbiosName(context)) {
 595                 /*
 596                  * We try to get our netbios name from the config. If that
 597                  * fails we fall back on constructing our netbios name from
 598                  * our hostname etc
 599                  */
 600                 char *netbios_name;
 601                 if (global_myname()) {
 602                         netbios_name = SMB_STRDUP(global_myname());
 603                 } else {
 604                         /*
 605                          * Hmmm, I want to get hostname as well, but I am too
 606                          * lazy for the moment
 607                          */
 608                         pid = sys_getpid();
 609                         netbios_name = (char *)SMB_MALLOC(17);
 610                         if (!netbios_name) {
 611                                 errno = ENOMEM;
 612                                 return NULL;
 613                         }
 614                         slprintf(netbios_name, 16,
 615                                  "smbc%s%d", smbc_getUser(context), pid);
 616                 }
 617
 618                 if (!netbios_name) {
 619                         errno = ENOMEM;
 620                         return NULL;
 621                 }
 622
 623                 smbc_setNetbiosName(context, netbios_name);
 624                 SAFE_FREE(netbios_name);
 625
 626                 if (!smbc_getNetbiosName(context)) {
 627                         errno = ENOMEM;
 628                         return NULL;
 629                 }
 630         }
 631
 632         DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
 633
 634         if (!smbc_getWorkgroup(context)) {
 635                 char *workgroup;
 636
 637                 if (lp_workgroup()) {
 638                         workgroup = SMB_STRDUP(lp_workgroup());
 639                 }
 640                 else {
 641                         /* TODO: Think about a decent default workgroup */
 642                         workgroup = SMB_STRDUP("samba");
 643                 }
 644
 645                 if (!workgroup) {
 646                         errno = ENOMEM;
 647                         return NULL;
 648                 }
 649
 650                 smbc_setWorkgroup(context, workgroup);
 651                 SAFE_FREE(workgroup);
 652
 653                 if (!smbc_getWorkgroup(context)) {
 654                         errno = ENOMEM;
 655                         return NULL;
 656                 }
 657         }
 658
 659         DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
 660
 661         /* shortest timeout is 1 second */
 662         if (smbc_getTimeout(context) > 0 && smbc_getTimeout(context) < 1000)
 663                 smbc_setTimeout(context, 1000);
 664
 665         context->internal->initialized = True;
 666
 667         /* Protect access to the count of contexts in use */
 668         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 669                 smb_panic("error locking 'initialized_ctx_count'");
 670         }
 671
 672         initialized_ctx_count++;
 673
 674         /* Unlock the mutex */
 675         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 676                 smb_panic("error unlocking 'initialized_ctx_count'");
 677         }
 678
 679         return context;
 680 }
 681
 682
 683 /* Return the verion of samba, and thus libsmbclient */
 684 const char *
 685 smbc_version(void)
 686 {
 687         return samba_version_string();
 688 }
 689
 690 /*
 691  * Set the credentials so DFS will work when following referrals.
 692  * This function is broken and must be removed. No SMBCCTX arg...
 693  * JRA.
 694  */
 695
 696 void
 697 smbc_set_credentials(const char *workgroup,
 698                         const char *user,
 699                         const char *password,
 700                         smbc_bool use_kerberos,
 701                         const char *signing_state)
 702 {
 703         d_printf("smbc_set_credentials is obsolete. Replace with smbc_set_credentials_with_fallback().\n");
 704 }
 705
 706 void smbc_set_credentials_with_fallback(SMBCCTX *context,
 707                                         const char *workgroup,
 708                                         const char *user,
 709                                         const char *password)
 710 {
 711         smbc_bool use_kerberos = false;
 712         const char *signing_state = "off";
 713         struct user_auth_info *auth_info = NULL;
 714
 715         if (! context) {
 716
 717                 return;
 718         }
 719
 720         if (! workgroup || ! *workgroup) {
 721                 workgroup = smbc_getWorkgroup(context);
 722         }
 723
 724         if (! user) {
 725                 user = smbc_getUser(context);
 726         }
 727
 728         if (! password) {
 729                 password = "";
 730         }
 731
 732         auth_info = user_auth_info_init(NULL);
 733
 734         if (! auth_info) {
 735                 DEBUG(0, ("smbc_set_credentials_with_fallback: allocation fail\n"));
 736                 return;
 737         }
 738
 739         if (smbc_getOptionUseKerberos(context)) {
 740                 use_kerberos = True;
 741         }
 742
 743         if (lp_client_signing()) {
 744                 signing_state = "on";
 745         }
 746
 747         if (lp_client_signing() == Required) {
 748                 signing_state = "force";
 749         }
 750
 751         set_cmdline_auth_info_username(auth_info, user);
 752         set_cmdline_auth_info_password(auth_info, password);
 753         set_cmdline_auth_info_use_kerberos(auth_info, use_kerberos);
 754         set_cmdline_auth_info_signing_state(auth_info, signing_state);
 755         set_cmdline_auth_info_fallback_after_kerberos(auth_info,
 756                 smbc_getOptionFallbackAfterKerberos(context));
 757         set_cmdline_auth_info_use_ccache(
 758                 auth_info, smbc_getOptionUseCCache(context));
 759         set_global_myworkgroup(workgroup);
 760
 761         TALLOC_FREE(context->internal->auth_info);
 762
 763         context->internal->auth_info = auth_info;
 764 }