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