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 "libsmb/libsmb.h"
  27 #include "libsmbclient.h"
  28 #include "libsmb_internal.h"
  29 #include "secrets.h"
  30
  31
  32 /*
  33  * Is the logging working / configfile read ?
  34  */
  35 static bool SMBC_initialized = false;
  36 static unsigned int initialized_ctx_count = 0;
  37 static void *initialized_ctx_count_mutex = NULL;
  38
  39 /*
  40  * Do some module- and library-wide intializations
  41  */
  42 static void
  43 SMBC_module_init(void * punused)
  44 {
  45     bool conf_loaded = False;
  46     char *home = NULL;
  47     TALLOC_CTX *frame = talloc_stackframe();
  48
  49     load_case_tables_library();
  50
  51     setup_logging("libsmbclient", DEBUG_STDOUT);
  52
  53     /* Here we would open the smb.conf file if needed ... */
  54
  55     lp_set_in_client(True);
  56
  57     home = getenv("HOME");
  58     if (home) {
  59         char *conf = NULL;
  60         if (asprintf(&conf, "%s/.smb/smb.conf", home) > 0) {
  61             if (lp_load(conf, True, False, False, True)) {
  62                 conf_loaded = True;
  63             } else {
  64                 DEBUG(5, ("Could not load config file: %s\n",
  65                           conf));
  66             }
  67             SAFE_FREE(conf);
  68         }
  69     }
  70
  71     if (!conf_loaded) {
  72         /*
  73          * Well, if that failed, try the get_dyn_CONFIGFILE
  74          * Which points to the standard locn, and if that
  75          * fails, silently ignore it and use the internal
  76          * defaults ...
  77          */
  78
  79         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, False)) {
  80             DEBUG(5, ("Could not load config file: %s\n",
  81                       get_dyn_CONFIGFILE()));
  82         } else if (home) {
  83             char *conf;
  84             /*
  85              * We loaded the global config file.  Now lets
  86              * load user-specific modifications to the
  87              * global config.
  88              */
  89             if (asprintf(&conf,
  90                          "%s/.smb/smb.conf.append",
  91                          home) > 0) {
  92                 if (!lp_load(conf, True, False, False, False)) {
  93                     DEBUG(10,
  94                           ("Could not append config file: "
  95                            "%s\n",
  96                            conf));
  97                 }
  98                 SAFE_FREE(conf);
  99             }
 100         }
 101     }
 102
 103     load_interfaces();  /* Load the list of interfaces ... */
 104
 105     reopen_logs();  /* Get logging working ... */
 106
 107     /*
 108      * Block SIGPIPE (from lib/util_sock.c: write())
 109      * It is not needed and should not stop execution
 110      */
 111     BlockSignals(True, SIGPIPE);
 112
 113     /* Create the mutex we'll use to protect initialized_ctx_count */
 114     if (SMB_THREAD_CREATE_MUTEX("initialized_ctx_count_mutex",
 115                                 initialized_ctx_count_mutex) != 0) {
 116         smb_panic("SMBC_module_init: "
 117                   "failed to create 'initialized_ctx_count' mutex");
 118     }
 119
 120
 121     TALLOC_FREE(frame);
 122 }
 123
 124
 125 static void
 126 SMBC_module_terminate(void)
 127 {
 128     secrets_shutdown();
 129     gfree_all();
 130     SMBC_initialized = false;
 131 }
 132
 133
 134 /*
 135  * Get a new empty handle to fill in with your own info
 136  */
 137 SMBCCTX *
 138 smbc_new_context(void)
 139 {
 140         SMBCCTX *context;
 141
 142         /* The first call to this function should initialize the module */
 143         SMB_THREAD_ONCE(&SMBC_initialized, SMBC_module_init, NULL);
 144
 145         /*
 146          * All newly added context fields should be placed in
 147          * SMBC_internal_data, not directly in SMBCCTX.
 148          */
 149         context = SMB_MALLOC_P(SMBCCTX);
 150         if (!context) {
 151                 errno = ENOMEM;
 152                 return NULL;
 153         }
 154
 155         ZERO_STRUCTP(context);
 156
 157         context->internal = SMB_MALLOC_P(struct SMBC_internal_data);
 158         if (!context->internal) {
 159                 SAFE_FREE(context);
 160                 errno = ENOMEM;
 161                 return NULL;
 162         }
 163
 164         /* Initialize the context and establish reasonable defaults */
 165         ZERO_STRUCTP(context->internal);
 166
 167         smbc_setDebug(context, 0);
 168         smbc_setTimeout(context, 20000);
 169
 170         smbc_setOptionFullTimeNames(context, False);
 171         smbc_setOptionOpenShareMode(context, SMBC_SHAREMODE_DENY_NONE);
 172         smbc_setOptionSmbEncryptionLevel(context, SMBC_ENCRYPTLEVEL_NONE);
 173         smbc_setOptionUseCCache(context, True);
 174         smbc_setOptionCaseSensitive(context, False);
 175         smbc_setOptionBrowseMaxLmbCount(context, 3);    /* # LMBs to query */
 176         smbc_setOptionUrlEncodeReaddirEntries(context, False);
 177         smbc_setOptionOneSharePerServer(context, False);
 178         if (getenv("LIBSMBCLIENT_NO_CCACHE") == NULL) {
 179                 smbc_setOptionUseCCache(context, true);
 180         }
 181
 182         smbc_setFunctionAuthData(context, SMBC_get_auth_data);
 183         smbc_setFunctionCheckServer(context, SMBC_check_server);
 184         smbc_setFunctionRemoveUnusedServer(context, SMBC_remove_unused_server);
 185
 186         smbc_setOptionUserData(context, NULL);
 187         smbc_setFunctionAddCachedServer(context, SMBC_add_cached_server);
 188         smbc_setFunctionGetCachedServer(context, SMBC_get_cached_server);
 189         smbc_setFunctionRemoveCachedServer(context, SMBC_remove_cached_server);
 190         smbc_setFunctionPurgeCachedServers(context, SMBC_purge_cached_servers);
 191
 192         smbc_setFunctionOpen(context, SMBC_open_ctx);
 193         smbc_setFunctionCreat(context, SMBC_creat_ctx);
 194         smbc_setFunctionRead(context, SMBC_read_ctx);
 195         smbc_setFunctionWrite(context, SMBC_write_ctx);
 196         smbc_setFunctionClose(context, SMBC_close_ctx);
 197         smbc_setFunctionUnlink(context, SMBC_unlink_ctx);
 198         smbc_setFunctionRename(context, SMBC_rename_ctx);
 199         smbc_setFunctionLseek(context, SMBC_lseek_ctx);
 200         smbc_setFunctionFtruncate(context, SMBC_ftruncate_ctx);
 201         smbc_setFunctionStat(context, SMBC_stat_ctx);
 202         smbc_setFunctionStatVFS(context, SMBC_statvfs_ctx);
 203         smbc_setFunctionFstatVFS(context, SMBC_fstatvfs_ctx);
 204         smbc_setFunctionFstat(context, SMBC_fstat_ctx);
 205         smbc_setFunctionOpendir(context, SMBC_opendir_ctx);
 206         smbc_setFunctionClosedir(context, SMBC_closedir_ctx);
 207         smbc_setFunctionReaddir(context, SMBC_readdir_ctx);
 208         smbc_setFunctionGetdents(context, SMBC_getdents_ctx);
 209         smbc_setFunctionMkdir(context, SMBC_mkdir_ctx);
 210         smbc_setFunctionRmdir(context, SMBC_rmdir_ctx);
 211         smbc_setFunctionTelldir(context, SMBC_telldir_ctx);
 212         smbc_setFunctionLseekdir(context, SMBC_lseekdir_ctx);
 213         smbc_setFunctionFstatdir(context, SMBC_fstatdir_ctx);
 214         smbc_setFunctionChmod(context, SMBC_chmod_ctx);
 215         smbc_setFunctionUtimes(context, SMBC_utimes_ctx);
 216         smbc_setFunctionSetxattr(context, SMBC_setxattr_ctx);
 217         smbc_setFunctionGetxattr(context, SMBC_getxattr_ctx);
 218         smbc_setFunctionRemovexattr(context, SMBC_removexattr_ctx);
 219         smbc_setFunctionListxattr(context, SMBC_listxattr_ctx);
 220
 221         smbc_setFunctionOpenPrintJob(context, SMBC_open_print_job_ctx);
 222         smbc_setFunctionPrintFile(context, SMBC_print_file_ctx);
 223         smbc_setFunctionListPrintJobs(context, SMBC_list_print_jobs_ctx);
 224         smbc_setFunctionUnlinkPrintJob(context, SMBC_unlink_print_job_ctx);
 225
 226         return context;
 227 }
 228
 229 /*
 230  * Free a context
 231  *
 232  * Returns 0 on success. Otherwise returns 1, the SMBCCTX is _not_ freed
 233  * and thus you'll be leaking memory if not handled properly.
 234  *
 235  */
 236 int
 237 smbc_free_context(SMBCCTX *context,
 238                   int shutdown_ctx)
 239 {
 240         if (!context) {
 241                 errno = EBADF;
 242                 return 1;
 243         }
 244
 245         if (shutdown_ctx) {
 246                 SMBCFILE * f;
 247                 DEBUG(1,("Performing aggressive shutdown.\n"));
 248
 249                 f = context->internal->files;
 250                 while (f) {
 251                         smbc_getFunctionClose(context)(context, f);
 252                         f = f->next;
 253                 }
 254                 context->internal->files = NULL;
 255
 256                 /* First try to remove the servers the nice way. */
 257                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 258                         SMBCSRV * s;
 259                         SMBCSRV * next;
 260                         DEBUG(1, ("Could not purge all servers, "
 261                                   "Nice way shutdown failed.\n"));
 262                         s = context->internal->servers;
 263                         while (s) {
 264                                 DEBUG(1, ("Forced shutdown: %p (fd=%d)\n",
 265                                           s, s->cli->fd));
 266                                 cli_shutdown(s->cli);
 267                                 smbc_getFunctionRemoveCachedServer(context)(context,
 268                                                                          s);
 269                                 next = s->next;
 270                                 DLIST_REMOVE(context->internal->servers, s);
 271                                 SAFE_FREE(s);
 272                                 s = next;
 273                         }
 274                         context->internal->servers = NULL;
 275                 }
 276         }
 277         else {
 278                 /* This is the polite way */
 279                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 280                         DEBUG(1, ("Could not purge all servers, "
 281                                   "free_context failed.\n"));
 282                         errno = EBUSY;
 283                         return 1;
 284                 }
 285                 if (context->internal->servers) {
 286                         DEBUG(1, ("Active servers in context, "
 287                                   "free_context failed.\n"));
 288                         errno = EBUSY;
 289                         return 1;
 290                 }
 291                 if (context->internal->files) {
 292                         DEBUG(1, ("Active files in context, "
 293                                   "free_context failed.\n"));
 294                         errno = EBUSY;
 295                         return 1;
 296                 }
 297         }
 298
 299         /* Things we have to clean up */
 300         smbc_setWorkgroup(context, NULL);
 301         smbc_setNetbiosName(context, NULL);
 302         smbc_setUser(context, NULL);
 303
 304         DEBUG(3, ("Context %p successfully freed\n", context));
 305
 306         /* Free any DFS auth context. */
 307         TALLOC_FREE(context->internal->auth_info);
 308
 309         SAFE_FREE(context->internal);
 310         SAFE_FREE(context);
 311
 312         /* Protect access to the count of contexts in use */
 313         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 314                 smb_panic("error locking 'initialized_ctx_count'");
 315         }
 316
 317         if (initialized_ctx_count) {
 318                 initialized_ctx_count--;
 319         }
 320
 321         if (initialized_ctx_count == 0) {
 322             SMBC_module_terminate();
 323         }
 324
 325         /* Unlock the mutex */
 326         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 327                 smb_panic("error unlocking 'initialized_ctx_count'");
 328         }
 329
 330         return 0;
 331 }
 332
 333
 334 /**
 335  * Deprecated interface.  Do not use.  Instead, use the various
 336  * smbc_setOption*() functions or smbc_setFunctionAuthDataWithContext().
 337  */
 338 void
 339 smbc_option_set(SMBCCTX *context,
 340                 char *option_name,
 341                 ... /* option_value */)
 342 {
 343         va_list ap;
 344         union {
 345                 int i;
 346                 bool b;
 347                 smbc_get_auth_data_with_context_fn auth_fn;
 348                 void *v;
 349                 const char *s;
 350         } option_value;
 351
 352         va_start(ap, option_name);
 353
 354         if (strcmp(option_name, "debug_to_stderr") == 0) {
 355                 option_value.b = (bool) va_arg(ap, int);
 356                 smbc_setOptionDebugToStderr(context, option_value.b);
 357
 358         } else if (strcmp(option_name, "full_time_names") == 0) {
 359                 option_value.b = (bool) va_arg(ap, int);
 360                 smbc_setOptionFullTimeNames(context, option_value.b);
 361
 362         } else if (strcmp(option_name, "open_share_mode") == 0) {
 363                 option_value.i = va_arg(ap, int);
 364                 smbc_setOptionOpenShareMode(context, option_value.i);
 365
 366         } else if (strcmp(option_name, "auth_function") == 0) {
 367                 option_value.auth_fn =
 368                         va_arg(ap, smbc_get_auth_data_with_context_fn);
 369                 smbc_setFunctionAuthDataWithContext(context, option_value.auth_fn);
 370
 371         } else if (strcmp(option_name, "user_data") == 0) {
 372                 option_value.v = va_arg(ap, void *);
 373                 smbc_setOptionUserData(context, option_value.v);
 374
 375         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 376                 option_value.s = va_arg(ap, const char *);
 377                 if (strcmp(option_value.s, "none") == 0) {
 378                         smbc_setOptionSmbEncryptionLevel(context,
 379                                                          SMBC_ENCRYPTLEVEL_NONE);
 380                 } else if (strcmp(option_value.s, "request") == 0) {
 381                         smbc_setOptionSmbEncryptionLevel(context,
 382                                                          SMBC_ENCRYPTLEVEL_REQUEST);
 383                 } else if (strcmp(option_value.s, "require") == 0) {
 384                         smbc_setOptionSmbEncryptionLevel(context,
 385                                                          SMBC_ENCRYPTLEVEL_REQUIRE);
 386                 }
 387
 388         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 389                 option_value.i = va_arg(ap, int);
 390                 smbc_setOptionBrowseMaxLmbCount(context, option_value.i);
 391
 392         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 393                 option_value.b = (bool) va_arg(ap, int);
 394                 smbc_setOptionUrlEncodeReaddirEntries(context, option_value.b);
 395
 396         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 397                 option_value.b = (bool) va_arg(ap, int);
 398                 smbc_setOptionOneSharePerServer(context, option_value.b);
 399
 400         } else if (strcmp(option_name, "use_kerberos") == 0) {
 401                 option_value.b = (bool) va_arg(ap, int);
 402                 smbc_setOptionUseKerberos(context, option_value.b);
 403
 404         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 405                 option_value.b = (bool) va_arg(ap, int);
 406                 smbc_setOptionFallbackAfterKerberos(context, option_value.b);
 407
 408         } else if (strcmp(option_name, "use_ccache") == 0) {
 409                 option_value.b = (bool) va_arg(ap, int);
 410                 smbc_setOptionUseCCache(context, option_value.b);
 411
 412         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 413                 option_value.b = (bool) va_arg(ap, int);
 414                 smbc_setOptionNoAutoAnonymousLogin(context, option_value.b);
 415         }
 416
 417         va_end(ap);
 418 }
 419
 420
 421 /*
 422  * Deprecated interface.  Do not use.  Instead, use the various
 423  * smbc_getOption*() functions.
 424  */
 425 void *
 426 smbc_option_get(SMBCCTX *context,
 427                 char *option_name)
 428 {
 429         if (strcmp(option_name, "debug_stderr") == 0) {
 430 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 431                 return (void *) (intptr_t) smbc_getOptionDebugToStderr(context);
 432 #else
 433                 return (void *) smbc_getOptionDebugToStderr(context);
 434 #endif
 435
 436         } else if (strcmp(option_name, "full_time_names") == 0) {
 437 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 438                 return (void *) (intptr_t) smbc_getOptionFullTimeNames(context);
 439 #else
 440                 return (void *) smbc_getOptionFullTimeNames(context);
 441 #endif
 442
 443         } else if (strcmp(option_name, "open_share_mode") == 0) {
 444 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 445                 return (void *) (intptr_t) smbc_getOptionOpenShareMode(context);
 446 #else
 447                 return (void *) smbc_getOptionOpenShareMode(context);
 448 #endif
 449
 450         } else if (strcmp(option_name, "auth_function") == 0) {
 451                 return (void *) smbc_getFunctionAuthDataWithContext(context);
 452
 453         } else if (strcmp(option_name, "user_data") == 0) {
 454                 return smbc_getOptionUserData(context);
 455
 456         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 457                 switch(smbc_getOptionSmbEncryptionLevel(context))
 458                 {
 459                 case 0:
 460                         return (void *) "none";
 461                 case 1:
 462                         return (void *) "request";
 463                 case 2:
 464                         return (void *) "require";
 465                 }
 466
 467         } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
 468                 SMBCSRV *s;
 469                 unsigned int num_servers = 0;
 470
 471                 for (s = context->internal->servers; s; s = s->next) {
 472                         num_servers++;
 473                         if (s->cli->trans_enc_state == NULL) {
 474                                 return (void *)false;
 475                         }
 476                 }
 477 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 478                 return (void *) (intptr_t) (bool) (num_servers > 0);
 479 #else
 480                 return (void *) (bool) (num_servers > 0);
 481 #endif
 482
 483         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 484 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 485                 return (void *) (intptr_t) smbc_getOptionBrowseMaxLmbCount(context);
 486 #else
 487                 return (void *) smbc_getOptionBrowseMaxLmbCount(context);
 488 #endif
 489
 490         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 491 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 492                 return (void *)(intptr_t) smbc_getOptionUrlEncodeReaddirEntries(context);
 493 #else
 494                 return (void *) (bool) smbc_getOptionUrlEncodeReaddirEntries(context);
 495 #endif
 496
 497         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 498 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 499                 return (void *) (intptr_t) smbc_getOptionOneSharePerServer(context);
 500 #else
 501                 return (void *) (bool) smbc_getOptionOneSharePerServer(context);
 502 #endif
 503
 504         } else if (strcmp(option_name, "use_kerberos") == 0) {
 505 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 506                 return (void *) (intptr_t) smbc_getOptionUseKerberos(context);
 507 #else
 508                 return (void *) (bool) smbc_getOptionUseKerberos(context);
 509 #endif
 510
 511         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 512 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 513                 return (void *)(intptr_t) smbc_getOptionFallbackAfterKerberos(context);
 514 #else
 515                 return (void *) (bool) smbc_getOptionFallbackAfterKerberos(context);
 516 #endif
 517
 518         } else if (strcmp(option_name, "use_ccache") == 0) {
 519 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 520                 return (void *) (intptr_t) smbc_getOptionUseCCache(context);
 521 #else
 522                 return (void *) (bool) smbc_getOptionUseCCache(context);
 523 #endif
 524
 525         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 526 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 527                 return (void *) (intptr_t) smbc_getOptionNoAutoAnonymousLogin(context);
 528 #else
 529                 return (void *) (bool) smbc_getOptionNoAutoAnonymousLogin(context);
 530 #endif
 531         }
 532
 533         return NULL;
 534 }
 535
 536
 537 /*
 538  * Initialize the library, etc.
 539  *
 540  * We accept a struct containing handle information.
 541  * valid values for info->debug from 0 to 100,
 542  * and insist that info->fn must be non-null.
 543  */
 544 SMBCCTX *
 545 smbc_init_context(SMBCCTX *context)
 546 {
 547         int pid;
 548
 549         if (!context) {
 550                 errno = EBADF;
 551                 return NULL;
 552         }
 553
 554         /* Do not initialise the same client twice */
 555         if (context->internal->initialized) {
 556                 return NULL;
 557         }
 558
 559         if ((!smbc_getFunctionAuthData(context) &&
 560              !smbc_getFunctionAuthDataWithContext(context)) ||
 561             smbc_getDebug(context) < 0 ||
 562             smbc_getDebug(context) > 100) {
 563
 564                 errno = EINVAL;
 565                 return NULL;
 566
 567         }
 568
 569         if (!smbc_getUser(context)) {
 570                 /*
 571                  * FIXME: Is this the best way to get the user info?
 572                  */
 573                 char *user = getenv("USER");
 574                 /* walk around as "guest" if no username can be found */
 575                 if (!user) {
 576                         user = SMB_STRDUP("guest");
 577                 } else {
 578                         user = SMB_STRDUP(user);
 579                 }
 580
 581                 if (!user) {
 582                         errno = ENOMEM;
 583                         return NULL;
 584                 }
 585
 586                 smbc_setUser(context, user);
 587                 SAFE_FREE(user);
 588
 589                 if (!smbc_getUser(context)) {
 590                         errno = ENOMEM;
 591                         return NULL;
 592                 }
 593         }
 594
 595         if (!smbc_getNetbiosName(context)) {
 596                 /*
 597                  * We try to get our netbios name from the config. If that
 598                  * fails we fall back on constructing our netbios name from
 599                  * our hostname etc
 600                  */
 601                 char *netbios_name;
 602                 if (global_myname()) {
 603                         netbios_name = SMB_STRDUP(global_myname());
 604                 } else {
 605                         /*
 606                          * Hmmm, I want to get hostname as well, but I am too
 607                          * lazy for the moment
 608                          */
 609                         pid = sys_getpid();
 610                         netbios_name = (char *)SMB_MALLOC(17);
 611                         if (!netbios_name) {
 612                                 errno = ENOMEM;
 613                                 return NULL;
 614                         }
 615                         slprintf(netbios_name, 16,
 616                                  "smbc%s%d", smbc_getUser(context), pid);
 617                 }
 618
 619                 if (!netbios_name) {
 620                         errno = ENOMEM;
 621                         return NULL;
 622                 }
 623
 624                 smbc_setNetbiosName(context, netbios_name);
 625                 SAFE_FREE(netbios_name);
 626
 627                 if (!smbc_getNetbiosName(context)) {
 628                         errno = ENOMEM;
 629                         return NULL;
 630                 }
 631         }
 632
 633         DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
 634
 635         if (!smbc_getWorkgroup(context)) {
 636                 char *workgroup;
 637
 638                 if (lp_workgroup()) {
 639                         workgroup = SMB_STRDUP(lp_workgroup());
 640                 }
 641                 else {
 642                         /* TODO: Think about a decent default workgroup */
 643                         workgroup = SMB_STRDUP("samba");
 644                 }
 645
 646                 if (!workgroup) {
 647                         errno = ENOMEM;
 648                         return NULL;
 649                 }
 650
 651                 smbc_setWorkgroup(context, workgroup);
 652                 SAFE_FREE(workgroup);
 653
 654                 if (!smbc_getWorkgroup(context)) {
 655                         errno = ENOMEM;
 656                         return NULL;
 657                 }
 658         }
 659
 660         DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
 661
 662         /* shortest timeout is 1 second */
 663         if (smbc_getTimeout(context) > 0 && smbc_getTimeout(context) < 1000)
 664                 smbc_setTimeout(context, 1000);
 665
 666         context->internal->initialized = True;
 667
 668         /* Protect access to the count of contexts in use */
 669         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 670                 smb_panic("error locking 'initialized_ctx_count'");
 671         }
 672
 673         initialized_ctx_count++;
 674
 675         /* Unlock the mutex */
 676         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 677                 smb_panic("error unlocking 'initialized_ctx_count'");
 678         }
 679
 680         return context;
 681 }
 682
 683
 684 /* Return the verion of samba, and thus libsmbclient */
 685 const char *
 686 smbc_version(void)
 687 {
 688         return samba_version_string();
 689 }
 690
 691 /*
 692  * Set the credentials so DFS will work when following referrals.
 693  * This function is broken and must be removed. No SMBCCTX arg...
 694  * JRA.
 695  */
 696
 697 void
 698 smbc_set_credentials(const char *workgroup,
 699                         const char *user,
 700                         const char *password,
 701                         smbc_bool use_kerberos,
 702                         const char *signing_state)
 703 {
 704         d_printf("smbc_set_credentials is obsolete. Replace with smbc_set_credentials_with_fallback().\n");
 705 }
 706
 707 void smbc_set_credentials_with_fallback(SMBCCTX *context,
 708                                         const char *workgroup,
 709                                         const char *user,
 710                                         const char *password)
 711 {
 712         smbc_bool use_kerberos = false;
 713         const char *signing_state = "off";
 714         struct user_auth_info *auth_info = NULL;
 715
 716         if (! context) {
 717
 718                 return;
 719         }
 720
 721         if (! workgroup || ! *workgroup) {
 722                 workgroup = smbc_getWorkgroup(context);
 723         }
 724
 725         if (! user) {
 726                 user = smbc_getUser(context);
 727         }
 728
 729         if (! password) {
 730                 password = "";
 731         }
 732
 733         auth_info = user_auth_info_init(NULL);
 734
 735         if (! auth_info) {
 736                 DEBUG(0, ("smbc_set_credentials_with_fallback: allocation fail\n"));
 737                 return;
 738         }
 739
 740         if (smbc_getOptionUseKerberos(context)) {
 741                 use_kerberos = True;
 742         }
 743
 744         if (lp_client_signing()) {
 745                 signing_state = "on";
 746         }
 747
 748         if (lp_client_signing() == Required) {
 749                 signing_state = "force";
 750         }
 751
 752         set_cmdline_auth_info_username(auth_info, user);
 753         set_cmdline_auth_info_password(auth_info, password);
 754         set_cmdline_auth_info_use_kerberos(auth_info, use_kerberos);
 755         set_cmdline_auth_info_signing_state(auth_info, signing_state);
 756         set_cmdline_auth_info_fallback_after_kerberos(auth_info,
 757                 smbc_getOptionFallbackAfterKerberos(context));
 758         set_cmdline_auth_info_use_ccache(
 759                 auth_info, smbc_getOptionUseCCache(context));
 760         set_global_myworkgroup(workgroup);
 761
 762         TALLOC_FREE(context->internal->auth_info);
 763
 764         context->internal->auth_info = auth_info;
 765 }