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_setOptionUseCCache(context, True);
 172         smbc_setOptionCaseSensitive(context, False);
 173         smbc_setOptionBrowseMaxLmbCount(context, 3);    /* # LMBs to query */
 174         smbc_setOptionUrlEncodeReaddirEntries(context, False);
 175         smbc_setOptionOneSharePerServer(context, False);
 176         if (getenv("LIBSMBCLIENT_NO_CCACHE") == NULL) {
 177                 smbc_setOptionUseCCache(context, true);
 178         }
 179
 180         smbc_setFunctionAuthData(context, SMBC_get_auth_data);
 181         smbc_setFunctionCheckServer(context, SMBC_check_server);
 182         smbc_setFunctionRemoveUnusedServer(context, SMBC_remove_unused_server);
 183
 184         smbc_setOptionUserData(context, NULL);
 185         smbc_setFunctionAddCachedServer(context, SMBC_add_cached_server);
 186         smbc_setFunctionGetCachedServer(context, SMBC_get_cached_server);
 187         smbc_setFunctionRemoveCachedServer(context, SMBC_remove_cached_server);
 188         smbc_setFunctionPurgeCachedServers(context, SMBC_purge_cached_servers);
 189
 190         smbc_setFunctionOpen(context, SMBC_open_ctx);
 191         smbc_setFunctionCreat(context, SMBC_creat_ctx);
 192         smbc_setFunctionRead(context, SMBC_read_ctx);
 193         smbc_setFunctionWrite(context, SMBC_write_ctx);
 194         smbc_setFunctionClose(context, SMBC_close_ctx);
 195         smbc_setFunctionUnlink(context, SMBC_unlink_ctx);
 196         smbc_setFunctionRename(context, SMBC_rename_ctx);
 197         smbc_setFunctionLseek(context, SMBC_lseek_ctx);
 198         smbc_setFunctionFtruncate(context, SMBC_ftruncate_ctx);
 199         smbc_setFunctionStat(context, SMBC_stat_ctx);
 200         smbc_setFunctionStatVFS(context, SMBC_statvfs_ctx);
 201         smbc_setFunctionFstatVFS(context, SMBC_fstatvfs_ctx);
 202         smbc_setFunctionFstat(context, SMBC_fstat_ctx);
 203         smbc_setFunctionOpendir(context, SMBC_opendir_ctx);
 204         smbc_setFunctionClosedir(context, SMBC_closedir_ctx);
 205         smbc_setFunctionReaddir(context, SMBC_readdir_ctx);
 206         smbc_setFunctionGetdents(context, SMBC_getdents_ctx);
 207         smbc_setFunctionMkdir(context, SMBC_mkdir_ctx);
 208         smbc_setFunctionRmdir(context, SMBC_rmdir_ctx);
 209         smbc_setFunctionTelldir(context, SMBC_telldir_ctx);
 210         smbc_setFunctionLseekdir(context, SMBC_lseekdir_ctx);
 211         smbc_setFunctionFstatdir(context, SMBC_fstatdir_ctx);
 212         smbc_setFunctionChmod(context, SMBC_chmod_ctx);
 213         smbc_setFunctionUtimes(context, SMBC_utimes_ctx);
 214         smbc_setFunctionSetxattr(context, SMBC_setxattr_ctx);
 215         smbc_setFunctionGetxattr(context, SMBC_getxattr_ctx);
 216         smbc_setFunctionRemovexattr(context, SMBC_removexattr_ctx);
 217         smbc_setFunctionListxattr(context, SMBC_listxattr_ctx);
 218
 219         smbc_setFunctionOpenPrintJob(context, SMBC_open_print_job_ctx);
 220         smbc_setFunctionPrintFile(context, SMBC_print_file_ctx);
 221         smbc_setFunctionListPrintJobs(context, SMBC_list_print_jobs_ctx);
 222         smbc_setFunctionUnlinkPrintJob(context, SMBC_unlink_print_job_ctx);
 223
 224         return context;
 225 }
 226
 227 /*
 228  * Free a context
 229  *
 230  * Returns 0 on success. Otherwise returns 1, the SMBCCTX is _not_ freed
 231  * and thus you'll be leaking memory if not handled properly.
 232  *
 233  */
 234 int
 235 smbc_free_context(SMBCCTX *context,
 236                   int shutdown_ctx)
 237 {
 238         if (!context) {
 239                 errno = EBADF;
 240                 return 1;
 241         }
 242
 243         if (shutdown_ctx) {
 244                 SMBCFILE * f;
 245                 DEBUG(1,("Performing aggressive shutdown.\n"));
 246
 247                 f = context->internal->files;
 248                 while (f) {
 249                         smbc_getFunctionClose(context)(context, f);
 250                         f = f->next;
 251                 }
 252                 context->internal->files = NULL;
 253
 254                 /* First try to remove the servers the nice way. */
 255                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 256                         SMBCSRV * s;
 257                         SMBCSRV * next;
 258                         DEBUG(1, ("Could not purge all servers, "
 259                                   "Nice way shutdown failed.\n"));
 260                         s = context->internal->servers;
 261                         while (s) {
 262                                 DEBUG(1, ("Forced shutdown: %p (fd=%d)\n",
 263                                           s, s->cli->fd));
 264                                 cli_shutdown(s->cli);
 265                                 smbc_getFunctionRemoveCachedServer(context)(context,
 266                                                                          s);
 267                                 next = s->next;
 268                                 DLIST_REMOVE(context->internal->servers, s);
 269                                 SAFE_FREE(s);
 270                                 s = next;
 271                         }
 272                         context->internal->servers = NULL;
 273                 }
 274         }
 275         else {
 276                 /* This is the polite way */
 277                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 278                         DEBUG(1, ("Could not purge all servers, "
 279                                   "free_context failed.\n"));
 280                         errno = EBUSY;
 281                         return 1;
 282                 }
 283                 if (context->internal->servers) {
 284                         DEBUG(1, ("Active servers in context, "
 285                                   "free_context failed.\n"));
 286                         errno = EBUSY;
 287                         return 1;
 288                 }
 289                 if (context->internal->files) {
 290                         DEBUG(1, ("Active files in context, "
 291                                   "free_context failed.\n"));
 292                         errno = EBUSY;
 293                         return 1;
 294                 }
 295         }
 296
 297         /* Things we have to clean up */
 298         smbc_setWorkgroup(context, NULL);
 299         smbc_setNetbiosName(context, NULL);
 300         smbc_setUser(context, NULL);
 301
 302         DEBUG(3, ("Context %p successfully freed\n", context));
 303
 304         /* Free any DFS auth context. */
 305         TALLOC_FREE(context->internal->auth_info);
 306
 307         SAFE_FREE(context->internal);
 308         SAFE_FREE(context);
 309
 310         /* Protect access to the count of contexts in use */
 311         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 312                 smb_panic("error locking 'initialized_ctx_count'");
 313         }
 314
 315         if (initialized_ctx_count) {
 316                 initialized_ctx_count--;
 317         }
 318
 319         if (initialized_ctx_count == 0) {
 320             SMBC_module_terminate();
 321         }
 322
 323         /* Unlock the mutex */
 324         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 325                 smb_panic("error unlocking 'initialized_ctx_count'");
 326         }
 327
 328         return 0;
 329 }
 330
 331
 332 /**
 333  * Deprecated interface.  Do not use.  Instead, use the various
 334  * smbc_setOption*() functions or smbc_setFunctionAuthDataWithContext().
 335  */
 336 void
 337 smbc_option_set(SMBCCTX *context,
 338                 char *option_name,
 339                 ... /* option_value */)
 340 {
 341         va_list ap;
 342         union {
 343                 int i;
 344                 bool b;
 345                 smbc_get_auth_data_with_context_fn auth_fn;
 346                 void *v;
 347                 const char *s;
 348         } option_value;
 349
 350         va_start(ap, option_name);
 351
 352         if (strcmp(option_name, "debug_to_stderr") == 0) {
 353                 option_value.b = (bool) va_arg(ap, int);
 354                 smbc_setOptionDebugToStderr(context, option_value.b);
 355
 356         } else if (strcmp(option_name, "full_time_names") == 0) {
 357                 option_value.b = (bool) va_arg(ap, int);
 358                 smbc_setOptionFullTimeNames(context, option_value.b);
 359
 360         } else if (strcmp(option_name, "open_share_mode") == 0) {
 361                 option_value.i = va_arg(ap, int);
 362                 smbc_setOptionOpenShareMode(context, option_value.i);
 363
 364         } else if (strcmp(option_name, "auth_function") == 0) {
 365                 option_value.auth_fn =
 366                         va_arg(ap, smbc_get_auth_data_with_context_fn);
 367                 smbc_setFunctionAuthDataWithContext(context, option_value.auth_fn);
 368
 369         } else if (strcmp(option_name, "user_data") == 0) {
 370                 option_value.v = va_arg(ap, void *);
 371                 smbc_setOptionUserData(context, option_value.v);
 372
 373         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 374                 option_value.s = va_arg(ap, const char *);
 375                 if (strcmp(option_value.s, "none") == 0) {
 376                         smbc_setOptionSmbEncryptionLevel(context,
 377                                                          SMBC_ENCRYPTLEVEL_NONE);
 378                 } else if (strcmp(option_value.s, "request") == 0) {
 379                         smbc_setOptionSmbEncryptionLevel(context,
 380                                                          SMBC_ENCRYPTLEVEL_REQUEST);
 381                 } else if (strcmp(option_value.s, "require") == 0) {
 382                         smbc_setOptionSmbEncryptionLevel(context,
 383                                                          SMBC_ENCRYPTLEVEL_REQUIRE);
 384                 }
 385
 386         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 387                 option_value.i = va_arg(ap, int);
 388                 smbc_setOptionBrowseMaxLmbCount(context, option_value.i);
 389
 390         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 391                 option_value.b = (bool) va_arg(ap, int);
 392                 smbc_setOptionUrlEncodeReaddirEntries(context, option_value.b);
 393
 394         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 395                 option_value.b = (bool) va_arg(ap, int);
 396                 smbc_setOptionOneSharePerServer(context, option_value.b);
 397
 398         } else if (strcmp(option_name, "use_kerberos") == 0) {
 399                 option_value.b = (bool) va_arg(ap, int);
 400                 smbc_setOptionUseKerberos(context, option_value.b);
 401
 402         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 403                 option_value.b = (bool) va_arg(ap, int);
 404                 smbc_setOptionFallbackAfterKerberos(context, option_value.b);
 405
 406         } else if (strcmp(option_name, "use_ccache") == 0) {
 407                 option_value.b = (bool) va_arg(ap, int);
 408                 smbc_setOptionUseCCache(context, option_value.b);
 409
 410         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 411                 option_value.b = (bool) va_arg(ap, int);
 412                 smbc_setOptionNoAutoAnonymousLogin(context, option_value.b);
 413         }
 414
 415         va_end(ap);
 416 }
 417
 418
 419 /*
 420  * Deprecated interface.  Do not use.  Instead, use the various
 421  * smbc_getOption*() functions.
 422  */
 423 void *
 424 smbc_option_get(SMBCCTX *context,
 425                 char *option_name)
 426 {
 427         if (strcmp(option_name, "debug_stderr") == 0) {
 428 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 429                 return (void *) (intptr_t) smbc_getOptionDebugToStderr(context);
 430 #else
 431                 return (void *) smbc_getOptionDebugToStderr(context);
 432 #endif
 433
 434         } else if (strcmp(option_name, "full_time_names") == 0) {
 435 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 436                 return (void *) (intptr_t) smbc_getOptionFullTimeNames(context);
 437 #else
 438                 return (void *) smbc_getOptionFullTimeNames(context);
 439 #endif
 440
 441         } else if (strcmp(option_name, "open_share_mode") == 0) {
 442 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 443                 return (void *) (intptr_t) smbc_getOptionOpenShareMode(context);
 444 #else
 445                 return (void *) smbc_getOptionOpenShareMode(context);
 446 #endif
 447
 448         } else if (strcmp(option_name, "auth_function") == 0) {
 449                 return (void *) smbc_getFunctionAuthDataWithContext(context);
 450
 451         } else if (strcmp(option_name, "user_data") == 0) {
 452                 return smbc_getOptionUserData(context);
 453
 454         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 455                 switch(smbc_getOptionSmbEncryptionLevel(context))
 456                 {
 457                 case 0:
 458                         return (void *) "none";
 459                 case 1:
 460                         return (void *) "request";
 461                 case 2:
 462                         return (void *) "require";
 463                 }
 464
 465         } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
 466                 SMBCSRV *s;
 467                 unsigned int num_servers = 0;
 468
 469                 for (s = context->internal->servers; s; s = s->next) {
 470                         num_servers++;
 471                         if (s->cli->trans_enc_state == NULL) {
 472                                 return (void *)false;
 473                         }
 474                 }
 475 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 476                 return (void *) (intptr_t) (bool) (num_servers > 0);
 477 #else
 478                 return (void *) (bool) (num_servers > 0);
 479 #endif
 480
 481         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 482 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 483                 return (void *) (intptr_t) smbc_getOptionBrowseMaxLmbCount(context);
 484 #else
 485                 return (void *) smbc_getOptionBrowseMaxLmbCount(context);
 486 #endif
 487
 488         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 489 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 490                 return (void *)(intptr_t) smbc_getOptionUrlEncodeReaddirEntries(context);
 491 #else
 492                 return (void *) (bool) smbc_getOptionUrlEncodeReaddirEntries(context);
 493 #endif
 494
 495         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 496 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 497                 return (void *) (intptr_t) smbc_getOptionOneSharePerServer(context);
 498 #else
 499                 return (void *) (bool) smbc_getOptionOneSharePerServer(context);
 500 #endif
 501
 502         } else if (strcmp(option_name, "use_kerberos") == 0) {
 503 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 504                 return (void *) (intptr_t) smbc_getOptionUseKerberos(context);
 505 #else
 506                 return (void *) (bool) smbc_getOptionUseKerberos(context);
 507 #endif
 508
 509         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 510 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 511                 return (void *)(intptr_t) smbc_getOptionFallbackAfterKerberos(context);
 512 #else
 513                 return (void *) (bool) smbc_getOptionFallbackAfterKerberos(context);
 514 #endif
 515
 516         } else if (strcmp(option_name, "use_ccache") == 0) {
 517 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 518                 return (void *) (intptr_t) smbc_getOptionUseCCache(context);
 519 #else
 520                 return (void *) (bool) smbc_getOptionUseCCache(context);
 521 #endif
 522
 523         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 524 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 525                 return (void *) (intptr_t) smbc_getOptionNoAutoAnonymousLogin(context);
 526 #else
 527                 return (void *) (bool) smbc_getOptionNoAutoAnonymousLogin(context);
 528 #endif
 529         }
 530
 531         return NULL;
 532 }
 533
 534
 535 /*
 536  * Initialize the library, etc.
 537  *
 538  * We accept a struct containing handle information.
 539  * valid values for info->debug from 0 to 100,
 540  * and insist that info->fn must be non-null.
 541  */
 542 SMBCCTX *
 543 smbc_init_context(SMBCCTX *context)
 544 {
 545         int pid;
 546
 547         if (!context) {
 548                 errno = EBADF;
 549                 return NULL;
 550         }
 551
 552         /* Do not initialise the same client twice */
 553         if (context->internal->initialized) {
 554                 return NULL;
 555         }
 556
 557         if (context->internal->debug_stderr) {
 558             /*
 559              * Hmmm... Do we want a unique dbf per-thread? For now, we'll just
 560              * leave it up to the user. If any one context spefies debug to
 561              * stderr then all will be.
 562              */
 563             dbf = x_stderr;
 564             x_setbuf(x_stderr, NULL);
 565         }
 566
 567         if ((!smbc_getFunctionAuthData(context) &&
 568              !smbc_getFunctionAuthDataWithContext(context)) ||
 569             smbc_getDebug(context) < 0 ||
 570             smbc_getDebug(context) > 100) {
 571
 572                 errno = EINVAL;
 573                 return NULL;
 574
 575         }
 576
 577         if (!smbc_getUser(context)) {
 578                 /*
 579                  * FIXME: Is this the best way to get the user info?
 580                  */
 581                 char *user = getenv("USER");
 582                 /* walk around as "guest" if no username can be found */
 583                 if (!user) {
 584                         user = SMB_STRDUP("guest");
 585                 } else {
 586                         user = SMB_STRDUP(user);
 587                 }
 588
 589                 if (!user) {
 590                         errno = ENOMEM;
 591                         return NULL;
 592                 }
 593
 594                 smbc_setUser(context, user);
 595                 SAFE_FREE(user);
 596
 597                 if (!smbc_getUser(context)) {
 598                         errno = ENOMEM;
 599                         return NULL;
 600                 }
 601         }
 602
 603         if (!smbc_getNetbiosName(context)) {
 604                 /*
 605                  * We try to get our netbios name from the config. If that
 606                  * fails we fall back on constructing our netbios name from
 607                  * our hostname etc
 608                  */
 609                 char *netbios_name;
 610                 if (global_myname()) {
 611                         netbios_name = SMB_STRDUP(global_myname());
 612                 } else {
 613                         /*
 614                          * Hmmm, I want to get hostname as well, but I am too
 615                          * lazy for the moment
 616                          */
 617                         pid = sys_getpid();
 618                         netbios_name = (char *)SMB_MALLOC(17);
 619                         if (!netbios_name) {
 620                                 errno = ENOMEM;
 621                                 return NULL;
 622                         }
 623                         slprintf(netbios_name, 16,
 624                                  "smbc%s%d", smbc_getUser(context), pid);
 625                 }
 626
 627                 if (!netbios_name) {
 628                         errno = ENOMEM;
 629                         return NULL;
 630                 }
 631
 632                 smbc_setNetbiosName(context, netbios_name);
 633                 SAFE_FREE(netbios_name);
 634
 635                 if (!smbc_getNetbiosName(context)) {
 636                         errno = ENOMEM;
 637                         return NULL;
 638                 }
 639         }
 640
 641         DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
 642
 643         if (!smbc_getWorkgroup(context)) {
 644                 char *workgroup;
 645
 646                 if (lp_workgroup()) {
 647                         workgroup = SMB_STRDUP(lp_workgroup());
 648                 }
 649                 else {
 650                         /* TODO: Think about a decent default workgroup */
 651                         workgroup = SMB_STRDUP("samba");
 652                 }
 653
 654                 if (!workgroup) {
 655                         errno = ENOMEM;
 656                         return NULL;
 657                 }
 658
 659                 smbc_setWorkgroup(context, workgroup);
 660                 SAFE_FREE(workgroup);
 661
 662                 if (!smbc_getWorkgroup(context)) {
 663                         errno = ENOMEM;
 664                         return NULL;
 665                 }
 666         }
 667
 668         DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
 669
 670         /* shortest timeout is 1 second */
 671         if (smbc_getTimeout(context) > 0 && smbc_getTimeout(context) < 1000)
 672                 smbc_setTimeout(context, 1000);
 673
 674         context->internal->initialized = True;
 675
 676         /* Protect access to the count of contexts in use */
 677         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 678                 smb_panic("error locking 'initialized_ctx_count'");
 679         }
 680
 681         initialized_ctx_count++;
 682
 683         /* Unlock the mutex */
 684         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 685                 smb_panic("error unlocking 'initialized_ctx_count'");
 686         }
 687
 688         return context;
 689 }
 690
 691
 692 /* Return the verion of samba, and thus libsmbclient */
 693 const char *
 694 smbc_version(void)
 695 {
 696         return samba_version_string();
 697 }
 698
 699 /*
 700  * Set the credentials so DFS will work when following referrals.
 701  * This function is broken and must be removed. No SMBCCTX arg...
 702  * JRA.
 703  */
 704
 705 void
 706 smbc_set_credentials(const char *workgroup,
 707                         const char *user,
 708                         const char *password,
 709                         smbc_bool use_kerberos,
 710                         const char *signing_state)
 711 {
 712         d_printf("smbc_set_credentials is obsolete. Replace with smbc_set_credentials_with_fallback().\n");
 713 }
 714
 715 void smbc_set_credentials_with_fallback(SMBCCTX *context,
 716                                         const char *workgroup,
 717                                         const char *user,
 718                                         const char *password)
 719 {
 720         smbc_bool use_kerberos = false;
 721         const char *signing_state = "off";
 722         struct user_auth_info *auth_info = NULL;
 723
 724         if (! context) {
 725
 726                 return;
 727         }
 728
 729         if (! workgroup || ! *workgroup) {
 730                 workgroup = smbc_getWorkgroup(context);
 731         }
 732
 733         if (! user) {
 734                 user = smbc_getUser(context);
 735         }
 736
 737         if (! password) {
 738                 password = "";
 739         }
 740
 741         auth_info = user_auth_info_init(NULL);
 742
 743         if (! auth_info) {
 744                 DEBUG(0, ("smbc_set_credentials_with_fallback: allocation fail\n"));
 745                 return;
 746         }
 747
 748         if (smbc_getOptionUseKerberos(context)) {
 749                 use_kerberos = True;
 750         }
 751
 752         if (lp_client_signing()) {
 753                 signing_state = "on";
 754         }
 755
 756         if (lp_client_signing() == Required) {
 757                 signing_state = "force";
 758         }
 759
 760         set_cmdline_auth_info_username(auth_info, user);
 761         set_cmdline_auth_info_password(auth_info, password);
 762         set_cmdline_auth_info_use_kerberos(auth_info, use_kerberos);
 763         set_cmdline_auth_info_signing_state(auth_info, signing_state);
 764         set_cmdline_auth_info_fallback_after_kerberos(auth_info,
 765                 smbc_getOptionFallbackAfterKerberos(context));
 766         set_cmdline_auth_info_use_ccache(
 767                 auth_info, smbc_getOptionUseCCache(context));
 768         set_global_myworkgroup(workgroup);
 769
 770         TALLOC_FREE(context->internal->auth_info);
 771
 772         context->internal->auth_info = auth_info;
 773 }