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 #include "../libcli/smb/smbXcli_base.h"
  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     setup_logging("libsmbclient", DEBUG_STDOUT);
  50
  51     /* Here we would open the smb.conf file if needed ... */
  52
  53     home = getenv("HOME");
  54     if (home) {
  55         char *conf = NULL;
  56         if (asprintf(&conf, "%s/.smb/smb.conf", home) > 0) {
  57             if (lp_load_client(conf)) {
  58                 conf_loaded = True;
  59             } else {
  60                 DEBUG(5, ("Could not load config file: %s\n",
  61                           conf));
  62             }
  63             SAFE_FREE(conf);
  64         }
  65     }
  66
  67     if (!conf_loaded) {
  68         /*
  69          * Well, if that failed, try the get_dyn_CONFIGFILE
  70          * Which points to the standard locn, and if that
  71          * fails, silently ignore it and use the internal
  72          * defaults ...
  73          */
  74
  75         if (!lp_load_client(get_dyn_CONFIGFILE())) {
  76             DEBUG(5, ("Could not load config file: %s\n",
  77                       get_dyn_CONFIGFILE()));
  78         } else if (home) {
  79             char *conf;
  80             /*
  81              * We loaded the global config file.  Now lets
  82              * load user-specific modifications to the
  83              * global config.
  84              */
  85             if (asprintf(&conf,
  86                          "%s/.smb/smb.conf.append",
  87                          home) > 0) {
  88                 if (!lp_load_client_no_reinit(conf)) {
  89                     DEBUG(10,
  90                           ("Could not append config file: "
  91                            "%s\n",
  92                            conf));
  93                 }
  94                 SAFE_FREE(conf);
  95             }
  96         }
  97     }
  98
  99     load_interfaces();  /* Load the list of interfaces ... */
 100
 101     reopen_logs();  /* Get logging working ... */
 102
 103     /*
 104      * Block SIGPIPE (from lib/util_sock.c: write())
 105      * It is not needed and should not stop execution
 106      */
 107     BlockSignals(True, SIGPIPE);
 108
 109     /* Create the mutex we'll use to protect initialized_ctx_count */
 110     if (SMB_THREAD_CREATE_MUTEX("initialized_ctx_count_mutex",
 111                                 initialized_ctx_count_mutex) != 0) {
 112         smb_panic("SMBC_module_init: "
 113                   "failed to create 'initialized_ctx_count' mutex");
 114     }
 115
 116
 117     TALLOC_FREE(frame);
 118 }
 119
 120
 121 static void
 122 SMBC_module_terminate(void)
 123 {
 124     TALLOC_CTX *frame = talloc_stackframe();
 125     secrets_shutdown();
 126     gfree_all();
 127     SMBC_initialized = false;
 128     TALLOC_FREE(frame);
 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         TALLOC_CTX *frame = talloc_stackframe();
 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                 TALLOC_FREE(frame);
 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                 TALLOC_FREE(frame);
 160                 SAFE_FREE(context);
 161                 errno = ENOMEM;
 162                 return NULL;
 163         }
 164
 165         /* Initialize the context and establish reasonable defaults */
 166         ZERO_STRUCTP(context->internal);
 167
 168         smbc_setDebug(context, 0);
 169         smbc_setTimeout(context, 20000);
 170         smbc_setPort(context, 0);
 171
 172         smbc_setOptionFullTimeNames(context, False);
 173         smbc_setOptionOpenShareMode(context, SMBC_SHAREMODE_DENY_NONE);
 174         smbc_setOptionSmbEncryptionLevel(context, SMBC_ENCRYPTLEVEL_NONE);
 175         smbc_setOptionUseCCache(context, True);
 176         smbc_setOptionCaseSensitive(context, False);
 177         smbc_setOptionBrowseMaxLmbCount(context, 3);    /* # LMBs to query */
 178         smbc_setOptionUrlEncodeReaddirEntries(context, False);
 179         smbc_setOptionOneSharePerServer(context, False);
 180         if (getenv("LIBSMBCLIENT_NO_CCACHE") == NULL) {
 181                 smbc_setOptionUseCCache(context, true);
 182         }
 183
 184         smbc_setFunctionAuthData(context, SMBC_get_auth_data);
 185         smbc_setFunctionCheckServer(context, SMBC_check_server);
 186         smbc_setFunctionRemoveUnusedServer(context, SMBC_remove_unused_server);
 187
 188         smbc_setOptionUserData(context, NULL);
 189         smbc_setFunctionAddCachedServer(context, SMBC_add_cached_server);
 190         smbc_setFunctionGetCachedServer(context, SMBC_get_cached_server);
 191         smbc_setFunctionRemoveCachedServer(context, SMBC_remove_cached_server);
 192         smbc_setFunctionPurgeCachedServers(context, SMBC_purge_cached_servers);
 193
 194         smbc_setFunctionOpen(context, SMBC_open_ctx);
 195         smbc_setFunctionCreat(context, SMBC_creat_ctx);
 196         smbc_setFunctionRead(context, SMBC_read_ctx);
 197         smbc_setFunctionWrite(context, SMBC_write_ctx);
 198         smbc_setFunctionClose(context, SMBC_close_ctx);
 199         smbc_setFunctionUnlink(context, SMBC_unlink_ctx);
 200         smbc_setFunctionRename(context, SMBC_rename_ctx);
 201         smbc_setFunctionLseek(context, SMBC_lseek_ctx);
 202         smbc_setFunctionFtruncate(context, SMBC_ftruncate_ctx);
 203         smbc_setFunctionStat(context, SMBC_stat_ctx);
 204         smbc_setFunctionStatVFS(context, SMBC_statvfs_ctx);
 205         smbc_setFunctionFstatVFS(context, SMBC_fstatvfs_ctx);
 206         smbc_setFunctionFstat(context, SMBC_fstat_ctx);
 207         smbc_setFunctionOpendir(context, SMBC_opendir_ctx);
 208         smbc_setFunctionClosedir(context, SMBC_closedir_ctx);
 209         smbc_setFunctionReaddir(context, SMBC_readdir_ctx);
 210         smbc_setFunctionGetdents(context, SMBC_getdents_ctx);
 211         smbc_setFunctionMkdir(context, SMBC_mkdir_ctx);
 212         smbc_setFunctionRmdir(context, SMBC_rmdir_ctx);
 213         smbc_setFunctionTelldir(context, SMBC_telldir_ctx);
 214         smbc_setFunctionLseekdir(context, SMBC_lseekdir_ctx);
 215         smbc_setFunctionFstatdir(context, SMBC_fstatdir_ctx);
 216         smbc_setFunctionChmod(context, SMBC_chmod_ctx);
 217         smbc_setFunctionUtimes(context, SMBC_utimes_ctx);
 218         smbc_setFunctionSetxattr(context, SMBC_setxattr_ctx);
 219         smbc_setFunctionGetxattr(context, SMBC_getxattr_ctx);
 220         smbc_setFunctionRemovexattr(context, SMBC_removexattr_ctx);
 221         smbc_setFunctionListxattr(context, SMBC_listxattr_ctx);
 222
 223         smbc_setFunctionOpenPrintJob(context, SMBC_open_print_job_ctx);
 224         smbc_setFunctionPrintFile(context, SMBC_print_file_ctx);
 225         smbc_setFunctionListPrintJobs(context, SMBC_list_print_jobs_ctx);
 226         smbc_setFunctionUnlinkPrintJob(context, SMBC_unlink_print_job_ctx);
 227
 228         TALLOC_FREE(frame);
 229         return context;
 230 }
 231
 232 /*
 233  * Free a context
 234  *
 235  * Returns 0 on success. Otherwise returns 1, the SMBCCTX is _not_ freed
 236  * and thus you'll be leaking memory if not handled properly.
 237  *
 238  */
 239 int
 240 smbc_free_context(SMBCCTX *context,
 241                   int shutdown_ctx)
 242 {
 243         TALLOC_CTX *frame;
 244         if (!context) {
 245                 errno = EBADF;
 246                 return 1;
 247         }
 248
 249         frame = talloc_stackframe();
 250
 251         if (shutdown_ctx) {
 252                 SMBCFILE * f;
 253                 DEBUG(1,("Performing aggressive shutdown.\n"));
 254
 255                 f = context->internal->files;
 256                 while (f) {
 257                         smbc_getFunctionClose(context)(context, f);
 258                         f = f->next;
 259                 }
 260                 context->internal->files = NULL;
 261
 262                 /* First try to remove the servers the nice way. */
 263                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 264                         SMBCSRV * s;
 265                         SMBCSRV * next;
 266                         DEBUG(1, ("Could not purge all servers, "
 267                                   "Nice way shutdown failed.\n"));
 268                         s = context->internal->servers;
 269                         while (s) {
 270                                 DEBUG(1, ("Forced shutdown: %p (cli=%p)\n",
 271                                           s, s->cli));
 272                                 cli_shutdown(s->cli);
 273                                 smbc_getFunctionRemoveCachedServer(context)(context,
 274                                                                          s);
 275                                 next = s->next;
 276                                 DLIST_REMOVE(context->internal->servers, s);
 277                                 SAFE_FREE(s);
 278                                 s = next;
 279                         }
 280                         context->internal->servers = NULL;
 281                 }
 282         }
 283         else {
 284                 /* This is the polite way */
 285                 if (smbc_getFunctionPurgeCachedServers(context)(context)) {
 286                         DEBUG(1, ("Could not purge all servers, "
 287                                   "free_context failed.\n"));
 288                         errno = EBUSY;
 289                         TALLOC_FREE(frame);
 290                         return 1;
 291                 }
 292                 if (context->internal->servers) {
 293                         DEBUG(1, ("Active servers in context, "
 294                                   "free_context failed.\n"));
 295                         errno = EBUSY;
 296                         TALLOC_FREE(frame);
 297                         return 1;
 298                 }
 299                 if (context->internal->files) {
 300                         DEBUG(1, ("Active files in context, "
 301                                   "free_context failed.\n"));
 302                         errno = EBUSY;
 303                         TALLOC_FREE(frame);
 304                         return 1;
 305                 }
 306         }
 307
 308         /* Things we have to clean up */
 309         smbc_setWorkgroup(context, NULL);
 310         smbc_setNetbiosName(context, NULL);
 311         smbc_setUser(context, NULL);
 312
 313         DEBUG(3, ("Context %p successfully freed\n", context));
 314
 315         /* Free any DFS auth context. */
 316         TALLOC_FREE(context->internal->auth_info);
 317
 318         SAFE_FREE(context->internal);
 319         SAFE_FREE(context);
 320
 321         /* Protect access to the count of contexts in use */
 322         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 323                 smb_panic("error locking 'initialized_ctx_count'");
 324         }
 325
 326         if (initialized_ctx_count) {
 327                 initialized_ctx_count--;
 328         }
 329
 330         if (initialized_ctx_count == 0) {
 331             SMBC_module_terminate();
 332         }
 333
 334         /* Unlock the mutex */
 335         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 336                 smb_panic("error unlocking 'initialized_ctx_count'");
 337         }
 338
 339         TALLOC_FREE(frame);
 340         return 0;
 341 }
 342
 343
 344 /**
 345  * Deprecated interface.  Do not use.  Instead, use the various
 346  * smbc_setOption*() functions or smbc_setFunctionAuthDataWithContext().
 347  */
 348 void
 349 smbc_option_set(SMBCCTX *context,
 350                 char *option_name,
 351                 ... /* option_value */)
 352 {
 353         va_list ap;
 354         union {
 355                 int i;
 356                 bool b;
 357                 smbc_get_auth_data_with_context_fn auth_fn;
 358                 void *v;
 359                 const char *s;
 360         } option_value;
 361
 362         TALLOC_CTX *frame = talloc_stackframe();
 363
 364         va_start(ap, option_name);
 365
 366         if (strcmp(option_name, "debug_to_stderr") == 0) {
 367                 option_value.b = (bool) va_arg(ap, int);
 368                 smbc_setOptionDebugToStderr(context, option_value.b);
 369
 370         } else if (strcmp(option_name, "full_time_names") == 0) {
 371                 option_value.b = (bool) va_arg(ap, int);
 372                 smbc_setOptionFullTimeNames(context, option_value.b);
 373
 374         } else if (strcmp(option_name, "open_share_mode") == 0) {
 375                 option_value.i = va_arg(ap, int);
 376                 smbc_setOptionOpenShareMode(context, option_value.i);
 377
 378         } else if (strcmp(option_name, "auth_function") == 0) {
 379                 option_value.auth_fn =
 380                         va_arg(ap, smbc_get_auth_data_with_context_fn);
 381                 smbc_setFunctionAuthDataWithContext(context, option_value.auth_fn);
 382
 383         } else if (strcmp(option_name, "user_data") == 0) {
 384                 option_value.v = va_arg(ap, void *);
 385                 smbc_setOptionUserData(context, option_value.v);
 386
 387         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 388                 option_value.s = va_arg(ap, const char *);
 389                 if (strcmp(option_value.s, "none") == 0) {
 390                         smbc_setOptionSmbEncryptionLevel(context,
 391                                                          SMBC_ENCRYPTLEVEL_NONE);
 392                 } else if (strcmp(option_value.s, "request") == 0) {
 393                         smbc_setOptionSmbEncryptionLevel(context,
 394                                                          SMBC_ENCRYPTLEVEL_REQUEST);
 395                 } else if (strcmp(option_value.s, "require") == 0) {
 396                         smbc_setOptionSmbEncryptionLevel(context,
 397                                                          SMBC_ENCRYPTLEVEL_REQUIRE);
 398                 }
 399
 400         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 401                 option_value.i = va_arg(ap, int);
 402                 smbc_setOptionBrowseMaxLmbCount(context, option_value.i);
 403
 404         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 405                 option_value.b = (bool) va_arg(ap, int);
 406                 smbc_setOptionUrlEncodeReaddirEntries(context, option_value.b);
 407
 408         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 409                 option_value.b = (bool) va_arg(ap, int);
 410                 smbc_setOptionOneSharePerServer(context, option_value.b);
 411
 412         } else if (strcmp(option_name, "use_kerberos") == 0) {
 413                 option_value.b = (bool) va_arg(ap, int);
 414                 smbc_setOptionUseKerberos(context, option_value.b);
 415
 416         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 417                 option_value.b = (bool) va_arg(ap, int);
 418                 smbc_setOptionFallbackAfterKerberos(context, option_value.b);
 419
 420         } else if (strcmp(option_name, "use_ccache") == 0) {
 421                 option_value.b = (bool) va_arg(ap, int);
 422                 smbc_setOptionUseCCache(context, option_value.b);
 423
 424         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 425                 option_value.b = (bool) va_arg(ap, int);
 426                 smbc_setOptionNoAutoAnonymousLogin(context, option_value.b);
 427         }
 428
 429         va_end(ap);
 430         TALLOC_FREE(frame);
 431 }
 432
 433
 434 /*
 435  * Deprecated interface.  Do not use.  Instead, use the various
 436  * smbc_getOption*() functions.
 437  */
 438 void *
 439 smbc_option_get(SMBCCTX *context,
 440                 char *option_name)
 441 {
 442         if (strcmp(option_name, "debug_stderr") == 0) {
 443 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 444                 return (void *) (intptr_t) smbc_getOptionDebugToStderr(context);
 445 #else
 446                 return (void *) smbc_getOptionDebugToStderr(context);
 447 #endif
 448
 449         } else if (strcmp(option_name, "full_time_names") == 0) {
 450 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 451                 return (void *) (intptr_t) smbc_getOptionFullTimeNames(context);
 452 #else
 453                 return (void *) smbc_getOptionFullTimeNames(context);
 454 #endif
 455
 456         } else if (strcmp(option_name, "open_share_mode") == 0) {
 457 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 458                 return (void *) (intptr_t) smbc_getOptionOpenShareMode(context);
 459 #else
 460                 return (void *) smbc_getOptionOpenShareMode(context);
 461 #endif
 462
 463         } else if (strcmp(option_name, "auth_function") == 0) {
 464                 return (void *) smbc_getFunctionAuthDataWithContext(context);
 465
 466         } else if (strcmp(option_name, "user_data") == 0) {
 467                 return smbc_getOptionUserData(context);
 468
 469         } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
 470                 switch(smbc_getOptionSmbEncryptionLevel(context))
 471                 {
 472                 case 0:
 473                         return discard_const_p(void, "none");
 474                 case 1:
 475                         return discard_const_p(void, "request");
 476                 case 2:
 477                         return discard_const_p(void, "require");
 478                 }
 479
 480         } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
 481                 SMBCSRV *s;
 482                 unsigned int num_servers = 0;
 483
 484                 for (s = context->internal->servers; s; s = s->next) {
 485                         num_servers++;
 486                         if (!smb1cli_conn_encryption_on(s->cli->conn)) {
 487                                 return (void *)false;
 488                         }
 489                 }
 490 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 491                 return (void *) (intptr_t) (bool) (num_servers > 0);
 492 #else
 493                 return (void *) (bool) (num_servers > 0);
 494 #endif
 495
 496         } else if (strcmp(option_name, "browse_max_lmb_count") == 0) {
 497 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 498                 return (void *) (intptr_t) smbc_getOptionBrowseMaxLmbCount(context);
 499 #else
 500                 return (void *) smbc_getOptionBrowseMaxLmbCount(context);
 501 #endif
 502
 503         } else if (strcmp(option_name, "urlencode_readdir_entries") == 0) {
 504 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 505                 return (void *)(intptr_t) smbc_getOptionUrlEncodeReaddirEntries(context);
 506 #else
 507                 return (void *) (bool) smbc_getOptionUrlEncodeReaddirEntries(context);
 508 #endif
 509
 510         } else if (strcmp(option_name, "one_share_per_server") == 0) {
 511 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 512                 return (void *) (intptr_t) smbc_getOptionOneSharePerServer(context);
 513 #else
 514                 return (void *) (bool) smbc_getOptionOneSharePerServer(context);
 515 #endif
 516
 517         } else if (strcmp(option_name, "use_kerberos") == 0) {
 518 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 519                 return (void *) (intptr_t) smbc_getOptionUseKerberos(context);
 520 #else
 521                 return (void *) (bool) smbc_getOptionUseKerberos(context);
 522 #endif
 523
 524         } else if (strcmp(option_name, "fallback_after_kerberos") == 0) {
 525 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 526                 return (void *)(intptr_t) smbc_getOptionFallbackAfterKerberos(context);
 527 #else
 528                 return (void *) (bool) smbc_getOptionFallbackAfterKerberos(context);
 529 #endif
 530
 531         } else if (strcmp(option_name, "use_ccache") == 0) {
 532 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 533                 return (void *) (intptr_t) smbc_getOptionUseCCache(context);
 534 #else
 535                 return (void *) (bool) smbc_getOptionUseCCache(context);
 536 #endif
 537
 538         } else if (strcmp(option_name, "no_auto_anonymous_login") == 0) {
 539 #if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
 540                 return (void *) (intptr_t) smbc_getOptionNoAutoAnonymousLogin(context);
 541 #else
 542                 return (void *) (bool) smbc_getOptionNoAutoAnonymousLogin(context);
 543 #endif
 544         }
 545
 546         return NULL;
 547 }
 548
 549
 550 /*
 551  * Initialize the library, etc.
 552  *
 553  * We accept a struct containing handle information.
 554  * valid values for info->debug from 0 to 100,
 555  * and insist that info->fn must be non-null.
 556  */
 557 SMBCCTX *
 558 smbc_init_context(SMBCCTX *context)
 559 {
 560         int pid;
 561         TALLOC_CTX *frame;
 562
 563         if (!context) {
 564                 errno = EBADF;
 565                 return NULL;
 566         }
 567
 568         /* Do not initialise the same client twice */
 569         if (context->internal->initialized) {
 570                 return NULL;
 571         }
 572
 573         frame = talloc_stackframe();
 574
 575         if ((!smbc_getFunctionAuthData(context) &&
 576              !smbc_getFunctionAuthDataWithContext(context)) ||
 577             smbc_getDebug(context) < 0 ||
 578             smbc_getDebug(context) > 100) {
 579
 580                 TALLOC_FREE(frame);
 581                 errno = EINVAL;
 582                 return NULL;
 583
 584         }
 585
 586         if (!smbc_getUser(context)) {
 587                 /*
 588                  * FIXME: Is this the best way to get the user info?
 589                  */
 590                 char *user = getenv("USER");
 591                 /* walk around as "guest" if no username can be found */
 592                 if (!user) {
 593                         user = SMB_STRDUP("guest");
 594                 } else {
 595                         user = SMB_STRDUP(user);
 596                 }
 597
 598                 if (!user) {
 599                         TALLOC_FREE(frame);
 600                         errno = ENOMEM;
 601                         return NULL;
 602                 }
 603
 604                 smbc_setUser(context, user);
 605                 SAFE_FREE(user);
 606
 607                 if (!smbc_getUser(context)) {
 608                         TALLOC_FREE(frame);
 609                         errno = ENOMEM;
 610                         return NULL;
 611                 }
 612         }
 613
 614         if (!smbc_getNetbiosName(context)) {
 615                 /*
 616                  * We try to get our netbios name from the config. If that
 617                  * fails we fall back on constructing our netbios name from
 618                  * our hostname etc
 619                  */
 620                 char *netbios_name;
 621                 if (lp_netbios_name()) {
 622                         netbios_name = SMB_STRDUP(lp_netbios_name());
 623                 } else {
 624                         /*
 625                          * Hmmm, I want to get hostname as well, but I am too
 626                          * lazy for the moment
 627                          */
 628                         pid = getpid();
 629                         netbios_name = (char *)SMB_MALLOC(17);
 630                         if (!netbios_name) {
 631                                 TALLOC_FREE(frame);
 632                                 errno = ENOMEM;
 633                                 return NULL;
 634                         }
 635                         slprintf(netbios_name, 16,
 636                                  "smbc%s%d", smbc_getUser(context), pid);
 637                 }
 638
 639                 if (!netbios_name) {
 640                         TALLOC_FREE(frame);
 641                         errno = ENOMEM;
 642                         return NULL;
 643                 }
 644
 645                 smbc_setNetbiosName(context, netbios_name);
 646                 SAFE_FREE(netbios_name);
 647
 648                 if (!smbc_getNetbiosName(context)) {
 649                         TALLOC_FREE(frame);
 650                         errno = ENOMEM;
 651                         return NULL;
 652                 }
 653         }
 654
 655         DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
 656
 657         if (!smbc_getWorkgroup(context)) {
 658                 char *workgroup;
 659
 660                 if (lp_workgroup()) {
 661                         workgroup = SMB_STRDUP(lp_workgroup());
 662                 }
 663                 else {
 664                         /* TODO: Think about a decent default workgroup */
 665                         workgroup = SMB_STRDUP("samba");
 666                 }
 667
 668                 if (!workgroup) {
 669                         TALLOC_FREE(frame);
 670                         errno = ENOMEM;
 671                         return NULL;
 672                 }
 673
 674                 smbc_setWorkgroup(context, workgroup);
 675                 SAFE_FREE(workgroup);
 676
 677                 if (!smbc_getWorkgroup(context)) {
 678                         TALLOC_FREE(frame);
 679                         errno = ENOMEM;
 680                         return NULL;
 681                 }
 682         }
 683
 684         DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
 685
 686         /* shortest timeout is 1 second */
 687         if (smbc_getTimeout(context) > 0 && smbc_getTimeout(context) < 1000)
 688                 smbc_setTimeout(context, 1000);
 689
 690         context->internal->initialized = True;
 691
 692         /* Protect access to the count of contexts in use */
 693         if (SMB_THREAD_LOCK(initialized_ctx_count_mutex) != 0) {
 694                 smb_panic("error locking 'initialized_ctx_count'");
 695         }
 696
 697         initialized_ctx_count++;
 698
 699         /* Unlock the mutex */
 700         if (SMB_THREAD_UNLOCK(initialized_ctx_count_mutex) != 0) {
 701                 smb_panic("error unlocking 'initialized_ctx_count'");
 702         }
 703
 704         TALLOC_FREE(frame);
 705         return context;
 706 }
 707
 708
 709 /* Return the verion of samba, and thus libsmbclient */
 710 const char *
 711 smbc_version(void)
 712 {
 713         return samba_version_string();
 714 }
 715
 716 /*
 717  * Set the credentials so DFS will work when following referrals.
 718  * This function is broken and must be removed. No SMBCCTX arg...
 719  * JRA.
 720  */
 721
 722 void
 723 smbc_set_credentials(const char *workgroup,
 724                         const char *user,
 725                         const char *password,
 726                         smbc_bool use_kerberos,
 727                         const char *signing_state)
 728 {
 729         d_printf("smbc_set_credentials is obsolete. Replace with smbc_set_credentials_with_fallback().\n");
 730 }
 731
 732 void smbc_set_credentials_with_fallback(SMBCCTX *context,
 733                                         const char *workgroup,
 734                                         const char *user,
 735                                         const char *password)
 736 {
 737         smbc_bool use_kerberos = false;
 738         const char *signing_state = "off";
 739         struct user_auth_info *auth_info = NULL;
 740         TALLOC_CTX *frame;
 741
 742         if (! context) {
 743
 744                 return;
 745         }
 746
 747         frame = talloc_stackframe();
 748
 749         if (! workgroup || ! *workgroup) {
 750                 workgroup = smbc_getWorkgroup(context);
 751         }
 752
 753         if (! user) {
 754                 user = smbc_getUser(context);
 755         }
 756
 757         if (! password) {
 758                 password = "";
 759         }
 760
 761         auth_info = user_auth_info_init(NULL);
 762
 763         if (! auth_info) {
 764                 DEBUG(0, ("smbc_set_credentials_with_fallback: allocation fail\n"));
 765                 TALLOC_FREE(frame);
 766                 return;
 767         }
 768
 769         if (smbc_getOptionUseKerberos(context)) {
 770                 use_kerberos = True;
 771         }
 772
 773         if (lp_client_signing() != SMB_SIGNING_OFF) {
 774                 signing_state = "if_required";
 775         }
 776
 777         if (lp_client_signing() == SMB_SIGNING_REQUIRED) {
 778                 signing_state = "required";
 779         }
 780
 781         set_cmdline_auth_info_username(auth_info, user);
 782         set_cmdline_auth_info_domain(auth_info, workgroup);
 783         set_cmdline_auth_info_password(auth_info, password);
 784         set_cmdline_auth_info_use_kerberos(auth_info, use_kerberos);
 785         set_cmdline_auth_info_signing_state(auth_info, signing_state);
 786         set_cmdline_auth_info_fallback_after_kerberos(auth_info,
 787                 smbc_getOptionFallbackAfterKerberos(context));
 788         set_cmdline_auth_info_use_ccache(
 789                 auth_info, smbc_getOptionUseCCache(context));
 790
 791         TALLOC_FREE(context->internal->auth_info);
 792
 793         context->internal->auth_info = auth_info;
 794         TALLOC_FREE(frame);
 795 }