source3/param/loadparm.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Parameter loading functions
   4    Copyright (C) Karl Auer 1993-1998
   5
   6    Largely re-written by Andrew Tridgell, September 1994
   7
   8    Copyright (C) Simo Sorce 2001
   9    Copyright (C) Alexander Bokovoy 2002
  10    Copyright (C) Stefan (metze) Metzmacher 2002
  11    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
  12    Copyright (C) Michael Adam 2008
  13    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
  14    Copyright (C) Andrew Bartlett 2011
  15
  16    This program is free software; you can redistribute it and/or modify
  17    it under the terms of the GNU General Public License as published by
  18    the Free Software Foundation; either version 3 of the License, or
  19    (at your option) any later version.
  20
  21    This program is distributed in the hope that it will be useful,
  22    but WITHOUT ANY WARRANTY; without even the implied warranty of
  23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24    GNU General Public License for more details.
  25
  26    You should have received a copy of the GNU General Public License
  27    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  28 */
  29
  30 /*
  31  *  Load parameters.
  32  *
  33  *  This module provides suitable callback functions for the params
  34  *  module. It builds the internal table of service details which is
  35  *  then used by the rest of the server.
  36  *
  37  * To add a parameter:
  38  *
  39  * 1) add it to the global or service structure definition
  40  * 2) add it to the parm_table
  41  * 3) add it to the list of available functions (eg: using FN_GLOBAL_STRING())
  42  * 4) If it's a global then initialise it in init_globals. If a local
  43  *    (ie. service) parameter then initialise it in the sDefault structure
  44  *
  45  *
  46  * Notes:
  47  *   The configuration file is processed sequentially for speed. It is NOT
  48  *   accessed randomly as happens in 'real' Windows. For this reason, there
  49  *   is a fair bit of sequence-dependent code here - ie., code which assumes
  50  *   that certain things happen before others. In particular, the code which
  51  *   happens at the boundary between sections is delicately poised, so be
  52  *   careful!
  53  *
  54  */
  55
  56 #include "includes.h"
  57 #include "system/filesys.h"
  58 #include "util_tdb.h"
  59 #include "lib/param/loadparm.h"
  60 #include "lib/param/param.h"
  61 #include "printing.h"
  62 #include "lib/smbconf/smbconf.h"
  63 #include "lib/smbconf/smbconf_init.h"
  64
  65 #include "ads.h"
  66 #include "../librpc/gen_ndr/svcctl.h"
  67 #include "intl.h"
  68 #include "../libcli/smb/smb_signing.h"
  69 #include "dbwrap/dbwrap.h"
  70 #include "dbwrap/dbwrap_rbt.h"
  71 #include "../lib/util/bitmap.h"
  72
  73 #ifdef HAVE_SYS_SYSCTL_H
  74 #include <sys/sysctl.h>
  75 #endif
  76
  77 #ifdef HAVE_HTTPCONNECTENCRYPT
  78 #include <cups/http.h>
  79 #endif
  80
  81 bool bLoaded = false;
  82
  83 extern userdom_struct current_user_info;
  84
  85 /* the special value for the include parameter
  86  * to be interpreted not as a file name but to
  87  * trigger loading of the global smb.conf options
  88  * from registry. */
  89 #ifndef INCLUDE_REGISTRY_NAME
  90 #define INCLUDE_REGISTRY_NAME "registry"
  91 #endif
  92
  93 static bool in_client = false;          /* Not in the client by default */
  94 static struct smbconf_csn conf_last_csn;
  95
  96 static int config_backend = CONFIG_BACKEND_FILE;
  97
  98 /* some helpful bits */
  99 #define LP_SNUM_OK(i) (((i) >= 0) && ((i) < iNumServices) && (ServicePtrs != NULL) && ServicePtrs[(i)]->valid)
 100 #define VALID(i) (ServicePtrs != NULL && ServicePtrs[i]->valid)
 101
 102 #define USERSHARE_VALID 1
 103 #define USERSHARE_PENDING_DELETE 2
 104
 105 static bool defaults_saved = false;
 106
 107 #include "lib/param/param_global.h"
 108
 109 static struct loadparm_global Globals;
 110
 111 /* This is a default service used to prime a services structure */
 112 static struct loadparm_service sDefault =
 113 {
 114         .valid = true,
 115         .autoloaded = false,
 116         .usershare = 0,
 117         .usershare_last_mod = {0, 0},
 118         .szService = NULL,
 119         .path = NULL,
 120         .username = NULL,
 121         .invalid_users = NULL,
 122         .valid_users = NULL,
 123         .admin_users = NULL,
 124         .szCopy = NULL,
 125         .szInclude = NULL,
 126         .preexec = NULL,
 127         .postexec = NULL,
 128         .root_preexec = NULL,
 129         .root_postexec = NULL,
 130         .cups_options = NULL,
 131         .print_command = NULL,
 132         .lpq_command = NULL,
 133         .lprm_command = NULL,
 134         .lppause_command = NULL,
 135         .lpresume_command = NULL,
 136         .queuepause_command = NULL,
 137         .queueresume_command = NULL,
 138         ._printername = NULL,
 139         .printjob_username = NULL,
 140         .dont_descend = NULL,
 141         .hosts_allow = NULL,
 142         .hosts_deny = NULL,
 143         .magic_script = NULL,
 144         .magic_output = NULL,
 145         .veto_files = NULL,
 146         .hide_files = NULL,
 147         .veto_oplock_files = NULL,
 148         .comment = NULL,
 149         .force_user = NULL,
 150         .force_group = NULL,
 151         .read_list = NULL,
 152         .write_list = NULL,
 153         .volume = NULL,
 154         .fstype = NULL,
 155         .vfs_objects = NULL,
 156         .msdfs_proxy = NULL,
 157         .aio_write_behind = NULL,
 158         .dfree_command = NULL,
 159         .min_print_space = 0,
 160         .iMaxPrintJobs = 1000,
 161         .max_reported_print_jobs = 0,
 162         .write_cache_size = 0,
 163         .create_mask = 0744,
 164         .force_create_mode = 0,
 165         .directory_mask = 0755,
 166         .force_directory_mode = 0,
 167         .max_connections = 0,
 168         .default_case = CASE_LOWER,
 169         .printing = DEFAULT_PRINTING,
 170         .oplock_contention_limit = 2,
 171         .csc_policy = 0,
 172         .block_size = 1024,
 173         .dfree_cache_time = 0,
 174         .preexec_close = false,
 175         .root_preexec_close = false,
 176         .case_sensitive = Auto,
 177         .preserve_case = true,
 178         .short_preserve_case = true,
 179         .hide_dot_files = true,
 180         .hide_special_files = false,
 181         .hide_unreadable = false,
 182         .hide_unwriteable_files = false,
 183         .browseable = true,
 184         .access_based_share_enum = false,
 185         .bAvailable = true,
 186         .read_only = true,
 187         .guest_only = false,
 188         .administrative_share = false,
 189         .guest_ok = false,
 190         .printable = false,
 191         .print_notify_backchannel = false,
 192         .map_system = false,
 193         .map_hidden = false,
 194         .map_archive = true,
 195         .store_dos_attributes = false,
 196         .dmapi_support = false,
 197         .locking = true,
 198         .strict_locking = Auto,
 199         .posix_locking = true,
 200         .oplocks = true,
 201         .kernel_oplocks = false,
 202         .level2_oplocks = true,
 203         .only_user = false,
 204         .mangled_names = true,
 205         .bWidelinks = false,
 206         .follow_symlinks = true,
 207         .sync_always = false,
 208         .strict_allocate = false,
 209         .strict_sync = false,
 210         .mangling_char = '~',
 211         .copymap = NULL,
 212         .delete_readonly = false,
 213         .fake_oplocks = false,
 214         .delete_veto_files = false,
 215         .dos_filemode = false,
 216         .dos_filetimes = true,
 217         .dos_filetime_resolution = false,
 218         .fake_directory_create_times = false,
 219         .blocking_locks = true,
 220         .inherit_permissions = false,
 221         .inherit_acls = false,
 222         .inherit_owner = false,
 223         .msdfs_root = false,
 224         .use_client_driver = false,
 225         .default_devmode = true,
 226         .force_printername = false,
 227         .nt_acl_support = true,
 228         .force_unknown_acl_user = false,
 229         ._use_sendfile = false,
 230         .profile_acls = false,
 231         .map_acl_inherit = false,
 232         .afs_share = false,
 233         .ea_support = false,
 234         .acl_check_permissions = true,
 235         .acl_map_full_control = true,
 236         .acl_group_control = false,
 237         .acl_allow_execute_always = false,
 238         .change_notify = true,
 239         .kernel_change_notify = true,
 240         .allocation_roundup_size = SMB_ROUNDUP_ALLOCATION_SIZE,
 241         .aio_read_size = 0,
 242         .aio_write_size = 0,
 243         .map_readonly = MAP_READONLY_YES,
 244         .directory_name_cache_size = 100,
 245         .smb_encrypt = SMB_SIGNING_DEFAULT,
 246         .kernel_share_modes = true,
 247         .durable_handles = true,
 248         .param_opt = NULL,
 249         .dummy = ""
 250 };
 251
 252 /* local variables */
 253 static struct loadparm_service **ServicePtrs = NULL;
 254 static int iNumServices = 0;
 255 static int iServiceIndex = 0;
 256 static struct db_context *ServiceHash;
 257 static bool bInGlobalSection = true;
 258 static bool bGlobalOnly = false;
 259 static struct file_lists *file_lists = NULL;
 260
 261 static void set_allowed_client_auth(void);
 262
 263 static bool lp_set_cmdline_helper(const char *pszParmName, const char *pszParmValue);
 264 static void free_param_opts(struct parmlist_entry **popts);
 265
 266 /* this is used to prevent lots of mallocs of size 1 */
 267 static const char null_string[] = "";
 268
 269 /**
 270  Free a string value.
 271 **/
 272
 273 static void string_free(char **s)
 274 {
 275         if (!s || !(*s))
 276                 return;
 277         if (*s == null_string)
 278                 *s = NULL;
 279         TALLOC_FREE(*s);
 280 }
 281
 282 /**
 283  Set a string value, deallocating any existing space, and allocing the space
 284  for the string
 285 **/
 286
 287 static bool string_set(TALLOC_CTX *mem_ctx, char **dest,const char *src)
 288 {
 289         string_free(dest);
 290
 291         if (!src) {
 292                 src = "";
 293         }
 294
 295         (*dest) = talloc_strdup(mem_ctx, src);
 296         if ((*dest) == NULL) {
 297                 DEBUG(0,("Out of memory in string_init\n"));
 298                 return false;
 299         }
 300
 301         return true;
 302 }
 303
 304 bool lp_string_set(char **dest, const char *src) {
 305         return string_set(Globals.ctx, dest, src);
 306 }
 307
 308 /***************************************************************************
 309  Initialise the sDefault parameter structure for the printer values.
 310 ***************************************************************************/
 311
 312 void init_printer_values(TALLOC_CTX *ctx, struct loadparm_service *pService)
 313 {
 314         /* choose defaults depending on the type of printing */
 315         switch (pService->printing) {
 316                 case PRINT_BSD:
 317                 case PRINT_AIX:
 318                 case PRINT_LPRNT:
 319                 case PRINT_LPROS2:
 320                         lpcfg_string_set(ctx, &pService->lpq_command, "lpq -P'%p'");
 321                         lpcfg_string_set(ctx, &pService->lprm_command, "lprm -P'%p' %j");
 322                         lpcfg_string_set(ctx, &pService->print_command, "lpr -r -P'%p' %s");
 323                         break;
 324
 325                 case PRINT_LPRNG:
 326                 case PRINT_PLP:
 327                         lpcfg_string_set(ctx, &pService->lpq_command, "lpq -P'%p'");
 328                         lpcfg_string_set(ctx, &pService->lprm_command, "lprm -P'%p' %j");
 329                         lpcfg_string_set(ctx, &pService->print_command, "lpr -r -P'%p' %s");
 330                         lpcfg_string_set(ctx, &pService->queuepause_command, "lpc stop '%p'");
 331                         lpcfg_string_set(ctx, &pService->queueresume_command, "lpc start '%p'");
 332                         lpcfg_string_set(ctx, &pService->lppause_command, "lpc hold '%p' %j");
 333                         lpcfg_string_set(ctx, &pService->lpresume_command, "lpc release '%p' %j");
 334                         break;
 335
 336                 case PRINT_CUPS:
 337                 case PRINT_IPRINT:
 338                         /* set the lpq command to contain the destination printer
 339                            name only.  This is used by cups_queue_get() */
 340                         lpcfg_string_set(ctx, &pService->lpq_command, "%p");
 341                         lpcfg_string_set(ctx, &pService->lprm_command, "");
 342                         lpcfg_string_set(ctx, &pService->print_command, "");
 343                         lpcfg_string_set(ctx, &pService->lppause_command, "");
 344                         lpcfg_string_set(ctx, &pService->lpresume_command, "");
 345                         lpcfg_string_set(ctx, &pService->queuepause_command, "");
 346                         lpcfg_string_set(ctx, &pService->queueresume_command, "");
 347                         break;
 348
 349                 case PRINT_SYSV:
 350                 case PRINT_HPUX:
 351                         lpcfg_string_set(ctx, &pService->lpq_command, "lpstat -o%p");
 352                         lpcfg_string_set(ctx, &pService->lprm_command, "cancel %p-%j");
 353                         lpcfg_string_set(ctx, &pService->print_command, "lp -c -d%p %s; rm %s");
 354                         lpcfg_string_set(ctx, &pService->queuepause_command, "disable %p");
 355                         lpcfg_string_set(ctx, &pService->queueresume_command, "enable %p");
 356 #ifndef HPUX
 357                         lpcfg_string_set(ctx, &pService->lppause_command, "lp -i %p-%j -H hold");
 358                         lpcfg_string_set(ctx, &pService->lpresume_command, "lp -i %p-%j -H resume");
 359 #endif /* HPUX */
 360                         break;
 361
 362                 case PRINT_QNX:
 363                         lpcfg_string_set(ctx, &pService->lpq_command, "lpq -P%p");
 364                         lpcfg_string_set(ctx, &pService->lprm_command, "lprm -P%p %j");
 365                         lpcfg_string_set(ctx, &pService->print_command, "lp -r -P%p %s");
 366                         break;
 367
 368 #if defined(DEVELOPER) || defined(ENABLE_SELFTEST)
 369
 370         case PRINT_TEST:
 371         case PRINT_VLP: {
 372                 const char *tdbfile;
 373                 TALLOC_CTX *tmp_ctx = talloc_new(ctx);
 374                 char *tmp;
 375
 376                 tdbfile = talloc_asprintf(
 377                         tmp_ctx, "tdbfile=%s",
 378                         lp_parm_const_string(-1, "vlp", "tdbfile",
 379                                              "/tmp/vlp.tdb"));
 380                 if (tdbfile == NULL) {
 381                         tdbfile="tdbfile=/tmp/vlp.tdb";
 382                 }
 383
 384                 tmp = talloc_asprintf(tmp_ctx, "vlp %s print %%p %%s",
 385                                       tdbfile);
 386                 lpcfg_string_set(ctx, &pService->print_command,
 387                            tmp ? tmp : "vlp print %p %s");
 388
 389                 tmp = talloc_asprintf(tmp_ctx, "vlp %s lpq %%p",
 390                                       tdbfile);
 391                 lpcfg_string_set(ctx, &pService->lpq_command,
 392                            tmp ? tmp : "vlp lpq %p");
 393
 394                 tmp = talloc_asprintf(tmp_ctx, "vlp %s lprm %%p %%j",
 395                                       tdbfile);
 396                 lpcfg_string_set(ctx, &pService->lprm_command,
 397                            tmp ? tmp : "vlp lprm %p %j");
 398
 399                 tmp = talloc_asprintf(tmp_ctx, "vlp %s lppause %%p %%j",
 400                                       tdbfile);
 401                 lpcfg_string_set(ctx, &pService->lppause_command,
 402                            tmp ? tmp : "vlp lppause %p %j");
 403
 404                 tmp = talloc_asprintf(tmp_ctx, "vlp %s lpresume %%p %%j",
 405                                       tdbfile);
 406                 lpcfg_string_set(ctx, &pService->lpresume_command,
 407                            tmp ? tmp : "vlp lpresume %p %j");
 408
 409                 tmp = talloc_asprintf(tmp_ctx, "vlp %s queuepause %%p",
 410                                       tdbfile);
 411                 lpcfg_string_set(ctx, &pService->queuepause_command,
 412                            tmp ? tmp : "vlp queuepause %p");
 413
 414                 tmp = talloc_asprintf(tmp_ctx, "vlp %s queueresume %%p",
 415                                       tdbfile);
 416                 lpcfg_string_set(ctx, &pService->queueresume_command,
 417                            tmp ? tmp : "vlp queueresume %p");
 418                 TALLOC_FREE(tmp_ctx);
 419
 420                 break;
 421         }
 422 #endif /* DEVELOPER */
 423
 424         }
 425 }
 426 /**
 427  *  Function to return the default value for the maximum number of open
 428  *  file descriptors permitted.  This function tries to consult the
 429  *  kernel-level (sysctl) and ulimit (getrlimit()) values and goes
 430  *  the smaller of those.
 431  */
 432 static int max_open_files(void)
 433 {
 434         int sysctl_max = MAX_OPEN_FILES;
 435         int rlimit_max = MAX_OPEN_FILES;
 436
 437 #ifdef HAVE_SYSCTLBYNAME
 438         {
 439                 size_t size = sizeof(sysctl_max);
 440                 sysctlbyname("kern.maxfilesperproc", &sysctl_max, &size, NULL,
 441                              0);
 442         }
 443 #endif
 444
 445 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
 446         {
 447                 struct rlimit rl;
 448
 449                 ZERO_STRUCT(rl);
 450
 451                 if (getrlimit(RLIMIT_NOFILE, &rl) == 0)
 452                         rlimit_max = rl.rlim_cur;
 453
 454 #if defined(RLIM_INFINITY)
 455                 if(rl.rlim_cur == RLIM_INFINITY)
 456                         rlimit_max = MAX_OPEN_FILES;
 457 #endif
 458         }
 459 #endif
 460
 461         if (sysctl_max < MIN_OPEN_FILES_WINDOWS) {
 462                 DEBUG(2,("max_open_files: increasing sysctl_max (%d) to "
 463                         "minimum Windows limit (%d)\n",
 464                         sysctl_max,
 465                         MIN_OPEN_FILES_WINDOWS));
 466                 sysctl_max = MIN_OPEN_FILES_WINDOWS;
 467         }
 468
 469         if (rlimit_max < MIN_OPEN_FILES_WINDOWS) {
 470                 DEBUG(2,("rlimit_max: increasing rlimit_max (%d) to "
 471                         "minimum Windows limit (%d)\n",
 472                         rlimit_max,
 473                         MIN_OPEN_FILES_WINDOWS));
 474                 rlimit_max = MIN_OPEN_FILES_WINDOWS;
 475         }
 476
 477         return MIN(sysctl_max, rlimit_max);
 478 }
 479
 480 /**
 481  * Common part of freeing allocated data for one parameter.
 482  */
 483 static void free_one_parameter_common(void *parm_ptr,
 484                                       struct parm_struct parm)
 485 {
 486         if ((parm.type == P_STRING) ||
 487             (parm.type == P_USTRING))
 488         {
 489                 string_free((char**)parm_ptr);
 490         } else if (parm.type == P_LIST || parm.type == P_CMDLIST) {
 491                 TALLOC_FREE(*((char***)parm_ptr));
 492         }
 493 }
 494
 495 /**
 496  * Free the allocated data for one parameter for a share
 497  * given as a service struct.
 498  */
 499 static void free_one_parameter(struct loadparm_service *service,
 500                                struct parm_struct parm)
 501 {
 502         void *parm_ptr;
 503
 504         if (parm.p_class != P_LOCAL) {
 505                 return;
 506         }
 507
 508         parm_ptr = lp_parm_ptr(service, &parm);
 509
 510         free_one_parameter_common(parm_ptr, parm);
 511 }
 512
 513 /**
 514  * Free the allocated parameter data of a share given
 515  * as a service struct.
 516  */
 517 static void free_parameters(struct loadparm_service *service)
 518 {
 519         uint32_t i;
 520
 521         for (i=0; parm_table[i].label; i++) {
 522                 free_one_parameter(service, parm_table[i]);
 523         }
 524 }
 525
 526 /**
 527  * Free the allocated data for one parameter for a given share
 528  * specified by an snum.
 529  */
 530 static void free_one_parameter_by_snum(int snum, struct parm_struct parm)
 531 {
 532         void *parm_ptr;
 533
 534         if (snum < 0) {
 535                 parm_ptr = lp_parm_ptr(NULL, &parm);
 536         } else if (parm.p_class != P_LOCAL) {
 537                 return;
 538         } else {
 539                 parm_ptr = lp_local_ptr_by_snum(snum, &parm);
 540         }
 541
 542         free_one_parameter_common(parm_ptr, parm);
 543 }
 544
 545 /**
 546  * Free the allocated parameter data for a share specified
 547  * by an snum.
 548  */
 549 static void free_parameters_by_snum(int snum)
 550 {
 551         uint32_t i;
 552
 553         for (i=0; parm_table[i].label; i++) {
 554                 free_one_parameter_by_snum(snum, parm_table[i]);
 555         }
 556 }
 557
 558 /**
 559  * Free the allocated global parameters.
 560  */
 561 static void free_global_parameters(void)
 562 {
 563         free_param_opts(&Globals.param_opt);
 564         free_parameters_by_snum(GLOBAL_SECTION_SNUM);
 565         TALLOC_FREE(Globals.ctx);
 566 }
 567
 568 struct lp_stored_option {
 569         struct lp_stored_option *prev, *next;
 570         const char *label;
 571         const char *value;
 572 };
 573
 574 static struct lp_stored_option *stored_options;
 575
 576 /*
 577   save options set by lp_set_cmdline() into a list. This list is
 578   re-applied when we do a globals reset, so that cmdline set options
 579   are sticky across reloads of smb.conf
 580  */
 581 static bool store_lp_set_cmdline(const char *pszParmName, const char *pszParmValue)
 582 {
 583         struct lp_stored_option *entry, *entry_next;
 584         for (entry = stored_options; entry != NULL; entry = entry_next) {
 585                 entry_next = entry->next;
 586                 if (strcmp(pszParmName, entry->label) == 0) {
 587                         DLIST_REMOVE(stored_options, entry);
 588                         talloc_free(entry);
 589                         break;
 590                 }
 591         }
 592
 593         entry = talloc(NULL, struct lp_stored_option);
 594         if (!entry) {
 595                 return false;
 596         }
 597
 598         entry->label = talloc_strdup(entry, pszParmName);
 599         if (!entry->label) {
 600                 talloc_free(entry);
 601                 return false;
 602         }
 603
 604         entry->value = talloc_strdup(entry, pszParmValue);
 605         if (!entry->value) {
 606                 talloc_free(entry);
 607                 return false;
 608         }
 609
 610         DLIST_ADD_END(stored_options, entry, struct lp_stored_option);
 611
 612         return true;
 613 }
 614
 615 static bool apply_lp_set_cmdline(void)
 616 {
 617         struct lp_stored_option *entry = NULL;
 618         for (entry = stored_options; entry != NULL; entry = entry->next) {
 619                 if (!lp_set_cmdline_helper(entry->label, entry->value)) {
 620                         DEBUG(0, ("Failed to re-apply cmdline parameter %s = %s\n",
 621                                   entry->label, entry->value));
 622                         return false;
 623                 }
 624         }
 625         return true;
 626 }
 627
 628 /***************************************************************************
 629  Initialise the global parameter structure.
 630 ***************************************************************************/
 631
 632 static void init_globals(bool reinit_globals)
 633 {
 634         static bool done_init = false;
 635         char *s = NULL;
 636         int i;
 637
 638         /* If requested to initialize only once and we've already done it... */
 639         if (!reinit_globals && done_init) {
 640                 /* ... then we have nothing more to do */
 641                 return;
 642         }
 643
 644         if (!done_init) {
 645                 /* The logfile can be set before this is invoked. Free it if so. */
 646                 if (Globals.logfile != NULL) {
 647                         string_free(&Globals.logfile);
 648                         Globals.logfile = NULL;
 649                 }
 650                 done_init = true;
 651         } else {
 652                 free_global_parameters();
 653         }
 654
 655         /* This memset and the free_global_parameters() above will
 656          * wipe out smb.conf options set with lp_set_cmdline().  The
 657          * apply_lp_set_cmdline() call puts these values back in the
 658          * table once the defaults are set */
 659         ZERO_STRUCT(Globals);
 660
 661         Globals.ctx = talloc_pooled_object(NULL, char, 272, 2048);
 662
 663         for (i = 0; parm_table[i].label; i++) {
 664                 if ((parm_table[i].type == P_STRING ||
 665                      parm_table[i].type == P_USTRING))
 666                 {
 667                         string_set(Globals.ctx, (char **)lp_parm_ptr(NULL, &parm_table[i]), "");
 668                 }
 669         }
 670
 671
 672         string_set(Globals.ctx, &sDefault.fstype, FSTYPE_STRING);
 673         string_set(Globals.ctx, &sDefault.printjob_username, "%U");
 674
 675         init_printer_values(Globals.ctx, &sDefault);
 676
 677         sDefault.ntvfs_handler = (const char **)str_list_make_v3(NULL, "unixuid default", NULL);
 678
 679         DEBUG(3, ("Initialising global parameters\n"));
 680
 681         /* Must manually force to upper case here, as this does not go via the handler */
 682         string_set(Globals.ctx, &Globals.netbios_name, myhostname_upper());
 683
 684         string_set(Globals.ctx, &Globals.smb_passwd_file, get_dyn_SMB_PASSWD_FILE());
 685         string_set(Globals.ctx, &Globals.private_dir, get_dyn_PRIVATE_DIR());
 686
 687         /* use the new 'hash2' method by default, with a prefix of 1 */
 688         string_set(Globals.ctx, &Globals.mangling_method, "hash2");
 689         Globals.mangle_prefix = 1;
 690
 691         string_set(Globals.ctx, &Globals.guest_account, GUEST_ACCOUNT);
 692
 693         /* using UTF8 by default allows us to support all chars */
 694         string_set(Globals.ctx, &Globals.unix_charset, DEFAULT_UNIX_CHARSET);
 695
 696         /* Use codepage 850 as a default for the dos character set */
 697         string_set(Globals.ctx, &Globals.dos_charset, DEFAULT_DOS_CHARSET);
 698
 699         /*
 700          * Allow the default PASSWD_CHAT to be overridden in local.h.
 701          */
 702         string_set(Globals.ctx, &Globals.passwd_chat, DEFAULT_PASSWD_CHAT);
 703
 704         string_set(Globals.ctx, &Globals.workgroup, DEFAULT_WORKGROUP);
 705
 706         string_set(Globals.ctx, &Globals.passwd_program, "");
 707         string_set(Globals.ctx, &Globals.lock_directory, get_dyn_LOCKDIR());
 708         string_set(Globals.ctx, &Globals.state_directory, get_dyn_STATEDIR());
 709         string_set(Globals.ctx, &Globals.cache_directory, get_dyn_CACHEDIR());
 710         string_set(Globals.ctx, &Globals.pid_directory, get_dyn_PIDDIR());
 711         string_set(Globals.ctx, &Globals.nbt_client_socket_address, "0.0.0.0");
 712         /*
 713          * By default support explicit binding to broadcast
 714          * addresses.
 715          */
 716         Globals.nmbd_bind_explicit_broadcast = true;
 717
 718         s = talloc_asprintf(talloc_tos(), "Samba %s", samba_version_string());
 719         if (s == NULL) {
 720                 smb_panic("init_globals: ENOMEM");
 721         }
 722         string_set(Globals.ctx, &Globals.server_string, s);
 723         TALLOC_FREE(s);
 724 #ifdef DEVELOPER
 725         string_set(Globals.ctx, &Globals.panic_action, "/bin/sleep 999999999");
 726 #endif
 727
 728         string_set(Globals.ctx, &Globals.socket_options, DEFAULT_SOCKET_OPTIONS);
 729
 730         string_set(Globals.ctx, &Globals.logon_drive, "");
 731         /* %N is the NIS auto.home server if -DAUTOHOME is used, else same as %L */
 732         string_set(Globals.ctx, &Globals.logon_home, "\\\\%N\\%U");
 733         string_set(Globals.ctx, &Globals.logon_path, "\\\\%N\\%U\\profile");
 734
 735         Globals.name_resolve_order = (const char **)str_list_make_v3(NULL, "lmhosts wins host bcast", NULL);
 736         string_set(Globals.ctx, &Globals.password_server, "*");
 737
 738         Globals.algorithmic_rid_base = BASE_RID;
 739
 740         Globals.load_printers = true;
 741         Globals.printcap_cache_time = 750;      /* 12.5 minutes */
 742
 743         Globals.config_backend = config_backend;
 744         Globals._server_role = ROLE_AUTO;
 745
 746         /* Was 65535 (0xFFFF). 0x4101 matches W2K and causes major speed improvements... */
 747         /* Discovered by 2 days of pain by Don McCall @ HP :-). */
 748         Globals.max_xmit = 0x4104;
 749         Globals.max_mux = 50;   /* This is *needed* for profile support. */
 750         Globals.lpq_cache_time = 30;    /* changed to handle large print servers better -- jerry */
 751         Globals._disable_spoolss = false;
 752         Globals.max_smbd_processes = 0;/* no limit specified */
 753         Globals.username_level = 0;
 754         Globals.deadtime = 0;
 755         Globals.getwd_cache = true;
 756         Globals.large_readwrite = true;
 757         Globals.max_log_size = 5000;
 758         Globals.max_open_files = max_open_files();
 759         Globals.server_max_protocol = PROTOCOL_SMB3_00;
 760         Globals.server_min_protocol = PROTOCOL_LANMAN1;
 761         Globals.client_max_protocol = PROTOCOL_NT1;
 762         Globals.client_min_protocol = PROTOCOL_CORE;
 763         Globals._security = SEC_AUTO;
 764         Globals.encrypt_passwords = true;
 765         Globals.client_schannel = Auto;
 766         Globals.winbind_sealed_pipes = true;
 767         Globals.require_strong_key = true;
 768         Globals.server_schannel = Auto;
 769         Globals.read_raw = true;
 770         Globals.write_raw = true;
 771         Globals.null_passwords = false;
 772         Globals.old_password_allowed_period = 60;
 773         Globals.obey_pam_restrictions = false;
 774         Globals.syslog = 1;
 775         Globals.syslog_only = false;
 776         Globals.timestamp_logs = true;
 777         string_set(Globals.ctx, &Globals.log_level, "0");
 778         Globals.debug_prefix_timestamp = false;
 779         Globals.debug_hires_timestamp = true;
 780         Globals.debug_pid = false;
 781         Globals.debug_uid = false;
 782         Globals.debug_class = false;
 783         Globals.enable_core_files = true;
 784         Globals.max_ttl = 60 * 60 * 24 * 3;     /* 3 days default. */
 785         Globals.max_wins_ttl = 60 * 60 * 24 * 6;        /* 6 days default. */
 786         Globals.min_wins_ttl = 60 * 60 * 6;     /* 6 hours default. */
 787         Globals.machine_password_timeout = 60 * 60 * 24 * 7;    /* 7 days default. */
 788         Globals.lm_announce = Auto;     /* = Auto: send only if LM clients found */
 789         Globals.lm_interval = 60;
 790 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
 791         Globals.nis_homedir = false;
 792 #ifdef WITH_NISPLUS_HOME
 793         string_set(Globals.ctx, &Globals.homedir_map, "auto_home.org_dir");
 794 #else
 795         string_set(Globals.ctx, &Globals.homedir_map, "auto.home");
 796 #endif
 797 #endif
 798         Globals.time_server = false;
 799         Globals.bind_interfaces_only = false;
 800         Globals.unix_password_sync = false;
 801         Globals.pam_password_change = false;
 802         Globals.passwd_chat_debug = false;
 803         Globals.passwd_chat_timeout = 2; /* 2 second default. */
 804         Globals.nt_pipe_support = true; /* Do NT pipes by default. */
 805         Globals.nt_status_support = true; /* Use NT status by default. */
 806         Globals.stat_cache = true;      /* use stat cache by default */
 807         Globals.max_stat_cache_size = 256; /* 256k by default */
 808         Globals.restrict_anonymous = 0;
 809         Globals.client_lanman_auth = false;     /* Do NOT use the LanMan hash if it is available */
 810         Globals.client_plaintext_auth = false;  /* Do NOT use a plaintext password even if is requested by the server */
 811         Globals.lanman_auth = false;    /* Do NOT use the LanMan hash, even if it is supplied */
 812         Globals.ntlm_auth = true;       /* Do use NTLMv1 if it is supplied by the client (otherwise NTLMv2) */
 813         Globals.client_ntlmv2_auth = true; /* Client should always use use NTLMv2, as we can't tell that the server supports it, but most modern servers do */
 814         /* Note, that we will also use NTLM2 session security (which is different), if it is available */
 815
 816         Globals.map_to_guest = 0;       /* By Default, "Never" */
 817         Globals.oplock_break_wait_time = 0;     /* By Default, 0 msecs. */
 818         Globals.enhanced_browsing = true;
 819         Globals.lock_spin_time = WINDOWS_MINIMUM_LOCK_TIMEOUT_MS; /* msec. */
 820 #ifdef MMAP_BLACKLIST
 821         Globals.use_mmap = false;
 822 #else
 823         Globals.use_mmap = true;
 824 #endif
 825         Globals.unicode = true;
 826         Globals.unix_extensions = true;
 827         Globals.reset_on_zero_vc = false;
 828         Globals.log_writeable_files_on_exit = false;
 829         Globals.create_krb5_conf = true;
 830         Globals.winbindMaxDomainConnections = 1;
 831
 832         /* hostname lookups can be very expensive and are broken on
 833            a large number of sites (tridge) */
 834         Globals.hostname_lookups = false;
 835
 836         string_set(Globals.ctx, &Globals.passdb_backend, "tdbsam");
 837         string_set(Globals.ctx, &Globals.ldap_suffix, "");
 838         string_set(Globals.ctx, &Globals.szLdapMachineSuffix, "");
 839         string_set(Globals.ctx, &Globals.szLdapUserSuffix, "");
 840         string_set(Globals.ctx, &Globals.szLdapGroupSuffix, "");
 841         string_set(Globals.ctx, &Globals.szLdapIdmapSuffix, "");
 842
 843         string_set(Globals.ctx, &Globals.ldap_admin_dn, "");
 844         Globals.ldap_ssl = LDAP_SSL_START_TLS;
 845         Globals.ldap_ssl_ads = false;
 846         Globals.ldap_deref = -1;
 847         Globals.ldap_passwd_sync = LDAP_PASSWD_SYNC_OFF;
 848         Globals.ldap_delete_dn = false;
 849         Globals.ldap_replication_sleep = 1000; /* wait 1 sec for replication */
 850         Globals.ldap_follow_referral = Auto;
 851         Globals.ldap_timeout = LDAP_DEFAULT_TIMEOUT;
 852         Globals.ldap_connection_timeout = LDAP_CONNECTION_DEFAULT_TIMEOUT;
 853         Globals.ldap_page_size = LDAP_PAGE_SIZE;
 854
 855         Globals.ldap_debug_level = 0;
 856         Globals.ldap_debug_threshold = 10;
 857
 858         /* This is what we tell the afs client. in reality we set the token
 859          * to never expire, though, when this runs out the afs client will
 860          * forget the token. Set to 0 to get NEVERDATE.*/
 861         Globals.afs_token_lifetime = 604800;
 862         Globals.cups_connection_timeout = CUPS_DEFAULT_CONNECTION_TIMEOUT;
 863
 864 /* these parameters are set to defaults that are more appropriate
 865    for the increasing samba install base:
 866
 867    as a member of the workgroup, that will possibly become a
 868    _local_ master browser (lm = true).  this is opposed to a forced
 869    local master browser startup (pm = true).
 870
 871    doesn't provide WINS server service by default (wsupp = false),
 872    and doesn't provide domain master browser services by default, either.
 873
 874 */
 875
 876         Globals.show_add_printer_wizard = true;
 877         Globals.os_level = 20;
 878         Globals.local_master = true;
 879         Globals._domain_master = Auto;  /* depending on _domain_logons */
 880         Globals._domain_logons = false;
 881         Globals.browse_list = true;
 882         Globals.we_are_a_wins_server = false;
 883         Globals.wins_proxy = false;
 884
 885         TALLOC_FREE(Globals.init_logon_delayed_hosts);
 886         Globals.init_logon_delay = 100; /* 100 ms default delay */
 887
 888         Globals.wins_dns_proxy = true;
 889
 890         Globals.allow_trusted_domains = true;
 891         string_set(Globals.ctx, &Globals.szIdmapBackend, "tdb");
 892
 893         string_set(Globals.ctx, &Globals.template_shell, "/bin/false");
 894         string_set(Globals.ctx, &Globals.template_homedir, "/home/%D/%U");
 895         string_set(Globals.ctx, &Globals.winbind_separator, "\\");
 896         string_set(Globals.ctx, &Globals.winbindd_socket_directory, dyn_WINBINDD_SOCKET_DIR);
 897
 898         string_set(Globals.ctx, &Globals.cups_server, "");
 899         string_set(Globals.ctx, &Globals.iprint_server, "");
 900
 901         string_set(Globals.ctx, &Globals._ctdbd_socket, "");
 902
 903         Globals.cluster_addresses = NULL;
 904         Globals.clustering = false;
 905         Globals.ctdb_timeout = 0;
 906         Globals.ctdb_locktime_warn_threshold = 0;
 907
 908         Globals.winbind_cache_time = 300;       /* 5 minutes */
 909         Globals.winbind_reconnect_delay = 30;   /* 30 seconds */
 910         Globals.winbind_max_clients = 200;
 911         Globals.winbind_enum_users = false;
 912         Globals.winbind_enum_groups = false;
 913         Globals.winbind_use_default_domain = false;
 914         Globals.winbind_trusted_domains_only = false;
 915         Globals.winbind_nested_groups = true;
 916         Globals.winbind_expand_groups = 1;
 917         Globals.winbind_nss_info = (const char **)str_list_make_v3(NULL, "template", NULL);
 918         Globals.winbind_refresh_tickets = false;
 919         Globals.winbind_offline_logon = false;
 920
 921         Globals.idmap_cache_time = 86400 * 7; /* a week by default */
 922         Globals.idmap_negative_cache_time = 120; /* 2 minutes by default */
 923
 924         Globals.passdb_expand_explicit = false;
 925
 926         Globals.name_cache_timeout = 660; /* In seconds */
 927
 928         Globals.use_spnego = true;
 929         Globals.client_use_spnego = true;
 930
 931         Globals.client_signing = SMB_SIGNING_DEFAULT;
 932         Globals.server_signing = SMB_SIGNING_DEFAULT;
 933
 934         Globals.defer_sharing_violations = true;
 935         Globals.smb_ports = (const char **)str_list_make_v3(NULL, SMB_PORTS, NULL);
 936
 937         Globals.enable_privileges = true;
 938         Globals.host_msdfs        = true;
 939         Globals.enable_asu_support       = false;
 940
 941         /* User defined shares. */
 942         s = talloc_asprintf(talloc_tos(), "%s/usershares", get_dyn_STATEDIR());
 943         if (s == NULL) {
 944                 smb_panic("init_globals: ENOMEM");
 945         }
 946         string_set(Globals.ctx, &Globals.usershare_path, s);
 947         TALLOC_FREE(s);
 948         string_set(Globals.ctx, &Globals.usershare_template_share, "");
 949         Globals.usershare_max_shares = 0;
 950         /* By default disallow sharing of directories not owned by the sharer. */
 951         Globals.usershare_owner_only = true;
 952         /* By default disallow guest access to usershares. */
 953         Globals.usershare_allow_guests = false;
 954
 955         Globals.keepalive = DEFAULT_KEEPALIVE;
 956
 957         /* By default no shares out of the registry */
 958         Globals.registry_shares = false;
 959
 960         Globals.iminreceivefile = 0;
 961
 962         Globals.map_untrusted_to_domain = false;
 963         Globals.multicast_dns_register = true;
 964
 965         Globals.smb2_max_read = DEFAULT_SMB2_MAX_READ;
 966         Globals.smb2_max_write = DEFAULT_SMB2_MAX_WRITE;
 967         Globals.smb2_max_trans = DEFAULT_SMB2_MAX_TRANSACT;
 968         Globals.ismb2_max_credits = DEFAULT_SMB2_MAX_CREDITS;
 969
 970         string_set(Globals.ctx, &Globals.ncalrpc_dir, get_dyn_NCALRPCDIR());
 971
 972         Globals.server_services = (const char **)str_list_make_v3(NULL, "s3fs rpc nbt wrepl ldap cldap kdc drepl winbindd ntp_signd kcc dnsupdate dns", NULL);
 973
 974         Globals.dcerpc_endpoint_servers = (const char **)str_list_make_v3(NULL, "epmapper wkssvc rpcecho samr netlogon lsarpc spoolss drsuapi dssetup unixinfo browser eventlog6 backupkey dnsserver", NULL);
 975
 976         Globals.tls_enabled = true;
 977
 978         string_set(Globals.ctx, &Globals._tls_keyfile, "tls/key.pem");
 979         string_set(Globals.ctx, &Globals._tls_certfile, "tls/cert.pem");
 980         string_set(Globals.ctx, &Globals._tls_cafile, "tls/ca.pem");
 981
 982         string_set(Globals.ctx, &Globals.share_backend, "classic");
 983
 984         Globals.iPreferredMaster = Auto;
 985
 986         Globals.allow_dns_updates = DNS_UPDATE_SIGNED;
 987
 988         string_set(Globals.ctx, &Globals.ntp_signd_socket_directory, get_dyn_NTP_SIGND_SOCKET_DIR());
 989
 990         string_set(Globals.ctx, &Globals.winbindd_privileged_socket_directory, get_dyn_WINBINDD_PRIVILEGED_SOCKET_DIR());
 991
 992         s = talloc_asprintf(talloc_tos(), "%s/samba_kcc", get_dyn_SCRIPTSBINDIR());
 993         if (s == NULL) {
 994                 smb_panic("init_globals: ENOMEM");
 995         }
 996         Globals.samba_kcc_command = (const char **)str_list_make_v3(NULL, s, NULL);
 997         TALLOC_FREE(s);
 998
 999         s = talloc_asprintf(talloc_tos(), "%s/samba_dnsupdate", get_dyn_SCRIPTSBINDIR());
1000         if (s == NULL) {
1001                 smb_panic("init_globals: ENOMEM");
1002         }
1003         Globals.dns_update_command = (const char **)str_list_make_v3(NULL, s, NULL);
1004         TALLOC_FREE(s);
1005
1006         s = talloc_asprintf(talloc_tos(), "%s/samba_spnupdate", get_dyn_SCRIPTSBINDIR());
1007         if (s == NULL) {
1008                 smb_panic("init_globals: ENOMEM");
1009         }
1010         Globals.spn_update_command = (const char **)str_list_make_v3(NULL, s, NULL);
1011         TALLOC_FREE(s);
1012
1013         Globals.nsupdate_command = (const char **)str_list_make_v3(NULL, "/usr/bin/nsupdate -g", NULL);
1014
1015         Globals.rndc_command = (const char **)str_list_make_v3(NULL, "/usr/sbin/rndc", NULL);
1016
1017         Globals.cldap_port = 389;
1018
1019         Globals.dgram_port = 138;
1020
1021         Globals.nbt_port = 137;
1022
1023         Globals.krb5_port = 88;
1024
1025         Globals.kpasswd_port = 464;
1026
1027         Globals.web_port = 901;
1028
1029         /* Now put back the settings that were set with lp_set_cmdline() */
1030         apply_lp_set_cmdline();
1031 }
1032
1033 /*******************************************************************
1034  Convenience routine to grab string parameters into talloced memory
1035  and run standard_sub_basic on them. The buffers can be written to by
1036  callers without affecting the source string.
1037 ********************************************************************/
1038
1039 char *lp_string(TALLOC_CTX *ctx, const char *s)
1040 {
1041         char *ret;
1042
1043         /* The follow debug is useful for tracking down memory problems
1044            especially if you have an inner loop that is calling a lp_*()
1045            function that returns a string.  Perhaps this debug should be
1046            present all the time? */
1047
1048 #if 0
1049         DEBUG(10, ("lp_string(%s)\n", s));
1050 #endif
1051         if (!s) {
1052                 return NULL;
1053         }
1054
1055         ret = talloc_sub_basic(ctx,
1056                         get_current_username(),
1057                         current_user_info.domain,
1058                         s);
1059         if (trim_char(ret, '\"', '\"')) {
1060                 if (strchr(ret,'\"') != NULL) {
1061                         TALLOC_FREE(ret);
1062                         ret = talloc_sub_basic(ctx,
1063                                         get_current_username(),
1064                                         current_user_info.domain,
1065                                         s);
1066                 }
1067         }
1068         return ret;
1069 }
1070
1071 /*
1072    In this section all the functions that are used to access the
1073    parameters from the rest of the program are defined
1074 */
1075
1076 #define FN_GLOBAL_STRING(fn_name,ptr) \
1077 char *lp_ ## fn_name(TALLOC_CTX *ctx) {return(lp_string((ctx), *(char **)(&Globals.ptr) ? *(char **)(&Globals.ptr) : ""));}
1078 #define FN_GLOBAL_CONST_STRING(fn_name,ptr) \
1079  const char *lp_ ## fn_name(void) {return(*(const char * const *)(&Globals.ptr) ? *(const char * const *)(&Globals.ptr) : "");}
1080 #define FN_GLOBAL_LIST(fn_name,ptr) \
1081  const char **lp_ ## fn_name(void) {return(*(const char ***)(&Globals.ptr));}
1082 #define FN_GLOBAL_BOOL(fn_name,ptr) \
1083  bool lp_ ## fn_name(void) {return(*(bool *)(&Globals.ptr));}
1084 #define FN_GLOBAL_CHAR(fn_name,ptr) \
1085  char lp_ ## fn_name(void) {return(*(char *)(&Globals.ptr));}
1086 #define FN_GLOBAL_INTEGER(fn_name,ptr) \
1087  int lp_ ## fn_name(void) {return(*(int *)(&Globals.ptr));}
1088
1089 #define FN_LOCAL_STRING(fn_name,val) \
1090 char *lp_ ## fn_name(TALLOC_CTX *ctx,int i) {return(lp_string((ctx), (LP_SNUM_OK(i) && ServicePtrs[(i)]->val) ? ServicePtrs[(i)]->val : sDefault.val));}
1091 #define FN_LOCAL_CONST_STRING(fn_name,val) \
1092  const char *lp_ ## fn_name(int i) {return (const char *)((LP_SNUM_OK(i) && ServicePtrs[(i)]->val) ? ServicePtrs[(i)]->val : sDefault.val);}
1093 #define FN_LOCAL_LIST(fn_name,val) \
1094  const char **lp_ ## fn_name(int i) {return(const char **)(LP_SNUM_OK(i)? ServicePtrs[(i)]->val : sDefault.val);}
1095 #define FN_LOCAL_BOOL(fn_name,val) \
1096  bool lp_ ## fn_name(int i) {return(bool)(LP_SNUM_OK(i)? ServicePtrs[(i)]->val : sDefault.val);}
1097 #define FN_LOCAL_INTEGER(fn_name,val) \
1098  int lp_ ## fn_name(int i) {return(LP_SNUM_OK(i)? ServicePtrs[(i)]->val : sDefault.val);}
1099
1100 #define FN_LOCAL_PARM_BOOL(fn_name,val) \
1101  bool lp_ ## fn_name(const struct share_params *p) {return(bool)(LP_SNUM_OK(p->service)? ServicePtrs[(p->service)]->val : sDefault.val);}
1102 #define FN_LOCAL_PARM_INTEGER(fn_name,val) \
1103  int lp_ ## fn_name(const struct share_params *p) {return(LP_SNUM_OK(p->service)? ServicePtrs[(p->service)]->val : sDefault.val);}
1104 #define FN_LOCAL_PARM_CHAR(fn_name,val) \
1105  char lp_ ## fn_name(const struct share_params *p) {return(LP_SNUM_OK(p->service)? ServicePtrs[(p->service)]->val : sDefault.val);}
1106
1107 static FN_GLOBAL_INTEGER(winbind_max_domain_connections_int,
1108                   winbindMaxDomainConnections)
1109
1110 int lp_winbind_max_domain_connections(void)
1111 {
1112         if (lp_winbind_offline_logon() &&
1113             lp_winbind_max_domain_connections_int() > 1) {
1114                 DEBUG(1, ("offline logons active, restricting max domain "
1115                           "connections to 1\n"));
1116                 return 1;
1117         }
1118         return MAX(1, lp_winbind_max_domain_connections_int());
1119 }
1120
1121 int lp_smb2_max_credits(void)
1122 {
1123         if (Globals.ismb2_max_credits == 0) {
1124                 Globals.ismb2_max_credits = DEFAULT_SMB2_MAX_CREDITS;
1125         }
1126         return Globals.ismb2_max_credits;
1127 }
1128 int lp_cups_encrypt(void)
1129 {
1130         int result = 0;
1131 #ifdef HAVE_HTTPCONNECTENCRYPT
1132         switch (Globals.CupsEncrypt) {
1133                 case Auto:
1134                         result = HTTP_ENCRYPT_REQUIRED;
1135                         break;
1136                 case true:
1137                         result = HTTP_ENCRYPT_ALWAYS;
1138                         break;
1139                 case false:
1140                         result = HTTP_ENCRYPT_NEVER;
1141                         break;
1142         }
1143 #endif
1144         return result;
1145 }
1146
1147 /* These functions remain in source3/param for now */
1148
1149 #include "lib/param/param_functions.c"
1150
1151 FN_LOCAL_STRING(servicename, szService)
1152 FN_LOCAL_CONST_STRING(const_servicename, szService)
1153
1154 /* These functions cannot be auto-generated */
1155 FN_LOCAL_BOOL(autoloaded, autoloaded)
1156 FN_GLOBAL_CONST_STRING(dnsdomain, dnsdomain)
1157
1158 /* local prototypes */
1159
1160 static int map_parameter_canonical(const char *pszParmName, bool *inverse);
1161 static const char *get_boolean(bool bool_value);
1162 static bool do_parameter(const char *pszParmName, const char *pszParmValue,
1163                          void *userdata);
1164 static bool do_section(const char *pszSectionName, void *userdata);
1165 static bool hash_a_service(const char *name, int number);
1166 static void free_service_byindex(int iService);
1167 static void show_parameter(int parmIndex);
1168 static bool is_synonym_of(int parm1, int parm2, bool *inverse);
1169
1170 /*
1171  * This is a helper function for parametrical options support.  It returns a
1172  * pointer to parametrical option value if it exists or NULL otherwise. Actual
1173  * parametrical functions are quite simple
1174  */
1175 static struct parmlist_entry *get_parametrics(int snum, const char *type,
1176                                                 const char *option)
1177 {
1178         if (snum >= iNumServices) return NULL;
1179
1180         if (snum < 0) {
1181                 return get_parametric_helper(NULL, type, option, Globals.param_opt);
1182         } else {
1183                 return get_parametric_helper(ServicePtrs[snum],
1184                                              type, option, Globals.param_opt);
1185         }
1186 }
1187
1188
1189 #define MISSING_PARAMETER(name) \
1190     DEBUG(0, ("%s(): value is NULL or empty!\n", #name))
1191
1192 /*******************************************************************
1193 convenience routine to return enum parameters.
1194 ********************************************************************/
1195 static int lp_enum(const char *s,const struct enum_list *_enum)
1196 {
1197         int i;
1198
1199         if (!s || !*s || !_enum) {
1200                 MISSING_PARAMETER(lp_enum);
1201                 return (-1);
1202         }
1203
1204         for (i=0; _enum[i].name; i++) {
1205                 if (strequal(_enum[i].name,s))
1206                         return _enum[i].value;
1207         }
1208
1209         DEBUG(0,("lp_enum(%s,enum): value is not in enum_list!\n",s));
1210         return (-1);
1211 }
1212
1213 #undef MISSING_PARAMETER
1214
1215 /* Return parametric option from a given service. Type is a part of option before ':' */
1216 /* Parametric option has following syntax: 'Type: option = value' */
1217 char *lp_parm_talloc_string(TALLOC_CTX *ctx, int snum, const char *type, const char *option, const char *def)
1218 {
1219         struct parmlist_entry *data = get_parametrics(snum, type, option);
1220
1221         if (data == NULL||data->value==NULL) {
1222                 if (def) {
1223                         return lp_string(ctx, def);
1224                 } else {
1225                         return NULL;
1226                 }
1227         }
1228
1229         return lp_string(ctx, data->value);
1230 }
1231
1232 /* Return parametric option from a given service. Type is a part of option before ':' */
1233 /* Parametric option has following syntax: 'Type: option = value' */
1234 const char *lp_parm_const_string(int snum, const char *type, const char *option, const char *def)
1235 {
1236         struct parmlist_entry *data = get_parametrics(snum, type, option);
1237
1238         if (data == NULL||data->value==NULL)
1239                 return def;
1240
1241         return data->value;
1242 }
1243
1244
1245 /* Return parametric option from a given service. Type is a part of option before ':' */
1246 /* Parametric option has following syntax: 'Type: option = value' */
1247
1248 const char **lp_parm_string_list(int snum, const char *type, const char *option, const char **def)
1249 {
1250         struct parmlist_entry *data = get_parametrics(snum, type, option);
1251
1252         if (data == NULL||data->value==NULL)
1253                 return (const char **)def;
1254
1255         if (data->list==NULL) {
1256                 data->list = str_list_make_v3(NULL, data->value, NULL);
1257         }
1258
1259         return (const char **)data->list;
1260 }
1261
1262 /* Return parametric option from a given service. Type is a part of option before ':' */
1263 /* Parametric option has following syntax: 'Type: option = value' */
1264
1265 int lp_parm_int(int snum, const char *type, const char *option, int def)
1266 {
1267         struct parmlist_entry *data = get_parametrics(snum, type, option);
1268
1269         if (data && data->value && *data->value)
1270                 return lp_int(data->value);
1271
1272         return def;
1273 }
1274
1275 /* Return parametric option from a given service. Type is a part of option before ':' */
1276 /* Parametric option has following syntax: 'Type: option = value' */
1277
1278 unsigned long lp_parm_ulong(int snum, const char *type, const char *option, unsigned long def)
1279 {
1280         struct parmlist_entry *data = get_parametrics(snum, type, option);
1281
1282         if (data && data->value && *data->value)
1283                 return lp_ulong(data->value);
1284
1285         return def;
1286 }
1287
1288 /* Return parametric option from a given service. Type is a part of option before ':' */
1289 /* Parametric option has following syntax: 'Type: option = value' */
1290
1291 bool lp_parm_bool(int snum, const char *type, const char *option, bool def)
1292 {
1293         struct parmlist_entry *data = get_parametrics(snum, type, option);
1294
1295         if (data && data->value && *data->value)
1296                 return lp_bool(data->value);
1297
1298         return def;
1299 }
1300
1301 /* Return parametric option from a given service. Type is a part of option before ':' */
1302 /* Parametric option has following syntax: 'Type: option = value' */
1303
1304 int lp_parm_enum(int snum, const char *type, const char *option,
1305                  const struct enum_list *_enum, int def)
1306 {
1307         struct parmlist_entry *data = get_parametrics(snum, type, option);
1308
1309         if (data && data->value && *data->value && _enum)
1310                 return lp_enum(data->value, _enum);
1311
1312         return def;
1313 }
1314
1315 /**
1316  * free a param_opts structure.
1317  * param_opts handling should be moved to talloc;
1318  * then this whole functions reduces to a TALLOC_FREE().
1319  */
1320
1321 static void free_param_opts(struct parmlist_entry **popts)
1322 {
1323         struct parmlist_entry *opt, *next_opt;
1324
1325         if (*popts != NULL) {
1326                 DEBUG(5, ("Freeing parametrics:\n"));
1327         }
1328         opt = *popts;
1329         while (opt != NULL) {
1330                 string_free(&opt->key);
1331                 string_free(&opt->value);
1332                 TALLOC_FREE(opt->list);
1333                 next_opt = opt->next;
1334                 TALLOC_FREE(opt);
1335                 opt = next_opt;
1336         }
1337         *popts = NULL;
1338 }
1339
1340 /***************************************************************************
1341  Free the dynamically allocated parts of a service struct.
1342 ***************************************************************************/
1343
1344 static void free_service(struct loadparm_service *pservice)
1345 {
1346         if (!pservice)
1347                 return;
1348
1349         if (pservice->szService)
1350                 DEBUG(5, ("free_service: Freeing service %s\n",
1351                        pservice->szService));
1352
1353         free_parameters(pservice);
1354
1355         string_free(&pservice->szService);
1356         TALLOC_FREE(pservice->copymap);
1357
1358         free_param_opts(&pservice->param_opt);
1359
1360         ZERO_STRUCTP(pservice);
1361 }
1362
1363
1364 /***************************************************************************
1365  remove a service indexed in the ServicePtrs array from the ServiceHash
1366  and free the dynamically allocated parts
1367 ***************************************************************************/
1368
1369 static void free_service_byindex(int idx)
1370 {
1371         if ( !LP_SNUM_OK(idx) )
1372                 return;
1373
1374         ServicePtrs[idx]->valid = false;
1375
1376         /* we have to cleanup the hash record */
1377
1378         if (ServicePtrs[idx]->szService) {
1379                 char *canon_name = canonicalize_servicename(
1380                         talloc_tos(),
1381                         ServicePtrs[idx]->szService );
1382
1383                 dbwrap_delete_bystring(ServiceHash, canon_name );
1384                 TALLOC_FREE(canon_name);
1385         }
1386
1387         free_service(ServicePtrs[idx]);
1388         talloc_free_children(ServicePtrs[idx]);
1389 }
1390
1391 /***************************************************************************
1392  Add a new service to the services array initialising it with the given
1393  service.
1394 ***************************************************************************/
1395
1396 static int add_a_service(const struct loadparm_service *pservice, const char *name)
1397 {
1398         int i;
1399         int num_to_alloc = iNumServices + 1;
1400         struct loadparm_service **tsp = NULL;
1401
1402         /* it might already exist */
1403         if (name) {
1404                 i = getservicebyname(name, NULL);
1405                 if (i >= 0) {
1406                         return (i);
1407                 }
1408         }
1409
1410         /* if not, then create one */
1411         i = iNumServices;
1412         tsp = talloc_realloc(NULL, ServicePtrs, struct loadparm_service *, num_to_alloc);
1413         if (tsp == NULL) {
1414                 DEBUG(0,("add_a_service: failed to enlarge ServicePtrs!\n"));
1415                 return (-1);
1416         }
1417         ServicePtrs = tsp;
1418         ServicePtrs[iNumServices] = talloc_zero(NULL, struct loadparm_service);
1419         if (!ServicePtrs[iNumServices]) {
1420                 DEBUG(0,("add_a_service: out of memory!\n"));
1421                 return (-1);
1422         }
1423         iNumServices++;
1424
1425         ServicePtrs[i]->valid = true;
1426
1427         copy_service(ServicePtrs[i], pservice, NULL);
1428         if (name)
1429                 string_set(ServicePtrs[i], &ServicePtrs[i]->szService, name);
1430
1431         DEBUG(8,("add_a_service: Creating snum = %d for %s\n",
1432                 i, ServicePtrs[i]->szService));
1433
1434         if (!hash_a_service(ServicePtrs[i]->szService, i)) {
1435                 return (-1);
1436         }
1437
1438         return (i);
1439 }
1440
1441 /***************************************************************************
1442   Convert a string to uppercase and remove whitespaces.
1443 ***************************************************************************/
1444
1445 char *canonicalize_servicename(TALLOC_CTX *ctx, const char *src)
1446 {
1447         char *result;
1448
1449         if ( !src ) {
1450                 DEBUG(0,("canonicalize_servicename: NULL source name!\n"));
1451                 return NULL;
1452         }
1453
1454         result = talloc_strdup(ctx, src);
1455         SMB_ASSERT(result != NULL);
1456
1457         if (!strlower_m(result)) {
1458                 TALLOC_FREE(result);
1459                 return NULL;
1460         }
1461         return result;
1462 }
1463
1464 /***************************************************************************
1465   Add a name/index pair for the services array to the hash table.
1466 ***************************************************************************/
1467
1468 static bool hash_a_service(const char *name, int idx)
1469 {
1470         char *canon_name;
1471
1472         if ( !ServiceHash ) {
1473                 DEBUG(10,("hash_a_service: creating servicehash\n"));
1474                 ServiceHash = db_open_rbt(NULL);
1475                 if ( !ServiceHash ) {
1476                         DEBUG(0,("hash_a_service: open tdb servicehash failed!\n"));
1477                         return false;
1478                 }
1479         }
1480
1481         DEBUG(10,("hash_a_service: hashing index %d for service name %s\n",
1482                 idx, name));
1483
1484         canon_name = canonicalize_servicename(talloc_tos(), name );
1485
1486         dbwrap_store_bystring(ServiceHash, canon_name,
1487                               make_tdb_data((uint8 *)&idx, sizeof(idx)),
1488                               TDB_REPLACE);
1489
1490         TALLOC_FREE(canon_name);
1491
1492         return true;
1493 }
1494
1495 /***************************************************************************
1496  Add a new home service, with the specified home directory, defaults coming
1497  from service ifrom.
1498 ***************************************************************************/
1499
1500 bool lp_add_home(const char *pszHomename, int iDefaultService,
1501                  const char *user, const char *pszHomedir)
1502 {
1503         int i;
1504
1505         if (pszHomename == NULL || user == NULL || pszHomedir == NULL ||
1506                         pszHomedir[0] == '\0') {
1507                 return false;
1508         }
1509
1510         i = add_a_service(ServicePtrs[iDefaultService], pszHomename);
1511
1512         if (i < 0)
1513                 return false;
1514
1515         if (!(*(ServicePtrs[iDefaultService]->path))
1516             || strequal(ServicePtrs[iDefaultService]->path,
1517                         lp_path(talloc_tos(), GLOBAL_SECTION_SNUM))) {
1518                 string_set(ServicePtrs[i], &ServicePtrs[i]->path, pszHomedir);
1519         }
1520
1521         if (!(*(ServicePtrs[i]->comment))) {
1522                 char *comment = talloc_asprintf(talloc_tos(), "Home directory of %s", user);
1523                 if (comment == NULL) {
1524                         return false;
1525                 }
1526                 string_set(ServicePtrs[i], &ServicePtrs[i]->comment, comment);
1527                 TALLOC_FREE(comment);
1528         }
1529
1530         /* set the browseable flag from the global default */
1531
1532         ServicePtrs[i]->browseable = sDefault.browseable;
1533         ServicePtrs[i]->access_based_share_enum = sDefault.access_based_share_enum;
1534
1535         ServicePtrs[i]->autoloaded = true;
1536
1537         DEBUG(3, ("adding home's share [%s] for user '%s' at '%s'\n", pszHomename,
1538                user, ServicePtrs[i]->path ));
1539
1540         return true;
1541 }
1542
1543 /***************************************************************************
1544  Add a new service, based on an old one.
1545 ***************************************************************************/
1546
1547 int lp_add_service(const char *pszService, int iDefaultService)
1548 {
1549         if (iDefaultService < 0) {
1550                 return add_a_service(&sDefault, pszService);
1551         }
1552
1553         return (add_a_service(ServicePtrs[iDefaultService], pszService));
1554 }
1555
1556 /***************************************************************************
1557  Add the IPC service.
1558 ***************************************************************************/
1559
1560 static bool lp_add_ipc(const char *ipc_name, bool guest_ok)
1561 {
1562         char *comment = NULL;
1563         int i = add_a_service(&sDefault, ipc_name);
1564
1565         if (i < 0)
1566                 return false;
1567
1568         comment = talloc_asprintf(talloc_tos(), "IPC Service (%s)",
1569                                   Globals.server_string);
1570         if (comment == NULL) {
1571                 return false;
1572         }
1573
1574         string_set(ServicePtrs[i], &ServicePtrs[i]->path, tmpdir());
1575         string_set(ServicePtrs[i], &ServicePtrs[i]->username, "");
1576         string_set(ServicePtrs[i], &ServicePtrs[i]->comment, comment);
1577         string_set(ServicePtrs[i], &ServicePtrs[i]->fstype, "IPC");
1578         ServicePtrs[i]->max_connections = 0;
1579         ServicePtrs[i]->bAvailable = true;
1580         ServicePtrs[i]->read_only = true;
1581         ServicePtrs[i]->guest_only = false;
1582         ServicePtrs[i]->administrative_share = true;
1583         ServicePtrs[i]->guest_ok = guest_ok;
1584         ServicePtrs[i]->printable = false;
1585         ServicePtrs[i]->browseable = sDefault.browseable;
1586
1587         DEBUG(3, ("adding IPC service\n"));
1588
1589         TALLOC_FREE(comment);
1590         return true;
1591 }
1592
1593 /***************************************************************************
1594  Add a new printer service, with defaults coming from service iFrom.
1595 ***************************************************************************/
1596
1597 bool lp_add_printer(const char *pszPrintername, int iDefaultService)
1598 {
1599         const char *comment = "From Printcap";
1600         int i = add_a_service(ServicePtrs[iDefaultService], pszPrintername);
1601
1602         if (i < 0)
1603                 return false;
1604
1605         /* note that we do NOT default the availability flag to true - */
1606         /* we take it from the default service passed. This allows all */
1607         /* dynamic printers to be disabled by disabling the [printers] */
1608         /* entry (if/when the 'available' keyword is implemented!).    */
1609
1610         /* the printer name is set to the service name. */
1611         string_set(ServicePtrs[i], &ServicePtrs[i]->_printername, pszPrintername);
1612         string_set(ServicePtrs[i], &ServicePtrs[i]->comment, comment);
1613
1614         /* set the browseable flag from the gloabl default */
1615         ServicePtrs[i]->browseable = sDefault.browseable;
1616
1617         /* Printers cannot be read_only. */
1618         ServicePtrs[i]->read_only = false;
1619         /* No oplocks on printer services. */
1620         ServicePtrs[i]->oplocks = false;
1621         /* Printer services must be printable. */
1622         ServicePtrs[i]->printable = true;
1623
1624         DEBUG(3, ("adding printer service %s\n", pszPrintername));
1625
1626         return true;
1627 }
1628
1629
1630 /***************************************************************************
1631  Check whether the given parameter name is valid.
1632  Parametric options (names containing a colon) are considered valid.
1633 ***************************************************************************/
1634
1635 bool lp_parameter_is_valid(const char *pszParmName)
1636 {
1637         return ((lpcfg_map_parameter(pszParmName) != -1) ||
1638                 (strchr(pszParmName, ':') != NULL));
1639 }
1640
1641 /***************************************************************************
1642  Check whether the given name is the name of a global parameter.
1643  Returns true for strings belonging to parameters of class
1644  P_GLOBAL, false for all other strings, also for parametric options
1645  and strings not belonging to any option.
1646 ***************************************************************************/
1647
1648 bool lp_parameter_is_global(const char *pszParmName)
1649 {
1650         int num = lpcfg_map_parameter(pszParmName);
1651
1652         if (num >= 0) {
1653                 return (parm_table[num].p_class == P_GLOBAL);
1654         }
1655
1656         return false;
1657 }
1658
1659 /**************************************************************************
1660  Check whether the given name is the canonical name of a parameter.
1661  Returns false if it is not a valid parameter Name.
1662  For parametric options, true is returned.
1663 **************************************************************************/
1664
1665 bool lp_parameter_is_canonical(const char *parm_name)
1666 {
1667         if (!lp_parameter_is_valid(parm_name)) {
1668                 return false;
1669         }
1670
1671         return (lpcfg_map_parameter(parm_name) ==
1672                 map_parameter_canonical(parm_name, NULL));
1673 }
1674
1675 /**************************************************************************
1676  Determine the canonical name for a parameter.
1677  Indicate when it is an inverse (boolean) synonym instead of a
1678  "usual" synonym.
1679 **************************************************************************/
1680
1681 bool lp_canonicalize_parameter(const char *parm_name, const char **canon_parm,
1682                                bool *inverse)
1683 {
1684         int num;
1685
1686         if (!lp_parameter_is_valid(parm_name)) {
1687                 *canon_parm = NULL;
1688                 return false;
1689         }
1690
1691         num = map_parameter_canonical(parm_name, inverse);
1692         if (num < 0) {
1693                 /* parametric option */
1694                 *canon_parm = parm_name;
1695         } else {
1696                 *canon_parm = parm_table[num].label;
1697         }
1698
1699         return true;
1700
1701 }
1702
1703 /**************************************************************************
1704  Determine the canonical name for a parameter.
1705  Turn the value given into the inverse boolean expression when
1706  the synonym is an invers boolean synonym.
1707
1708  Return true if parm_name is a valid parameter name and
1709  in case it is an invers boolean synonym, if the val string could
1710  successfully be converted to the reverse bool.
1711  Return false in all other cases.
1712 **************************************************************************/
1713
1714 bool lp_canonicalize_parameter_with_value(const char *parm_name,
1715                                           const char *val,
1716                                           const char **canon_parm,
1717                                           const char **canon_val)
1718 {
1719         int num;
1720         bool inverse;
1721
1722         if (!lp_parameter_is_valid(parm_name)) {
1723                 *canon_parm = NULL;
1724                 *canon_val = NULL;
1725                 return false;
1726         }
1727
1728         num = map_parameter_canonical(parm_name, &inverse);
1729         if (num < 0) {
1730                 /* parametric option */
1731                 *canon_parm = parm_name;
1732                 *canon_val = val;
1733         } else {
1734                 *canon_parm = parm_table[num].label;
1735                 if (inverse) {
1736                         if (!lp_invert_boolean(val, canon_val)) {
1737                                 *canon_val = NULL;
1738                                 return false;
1739                         }
1740                 } else {
1741                         *canon_val = val;
1742                 }
1743         }
1744
1745         return true;
1746 }
1747
1748 /***************************************************************************
1749  Map a parameter's string representation to the index of the canonical
1750  form of the parameter (it might be a synonym).
1751  Returns -1 if the parameter string is not recognised.
1752 ***************************************************************************/
1753
1754 static int map_parameter_canonical(const char *pszParmName, bool *inverse)
1755 {
1756         int parm_num, canon_num;
1757         bool loc_inverse = false;
1758
1759         parm_num = lpcfg_map_parameter(pszParmName);
1760         if ((parm_num < 0) || !(parm_table[parm_num].flags & FLAG_HIDE)) {
1761                 /* invalid, parametric or no canidate for synonyms ... */
1762                 goto done;
1763         }
1764
1765         for (canon_num = 0; parm_table[canon_num].label; canon_num++) {
1766                 if (is_synonym_of(parm_num, canon_num, &loc_inverse)) {
1767                         parm_num = canon_num;
1768                         goto done;
1769                 }
1770         }
1771
1772 done:
1773         if (inverse != NULL) {
1774                 *inverse = loc_inverse;
1775         }
1776         return parm_num;
1777 }
1778
1779 /***************************************************************************
1780  return true if parameter number parm1 is a synonym of parameter
1781  number parm2 (parm2 being the principal name).
1782  set inverse to true if parm1 is P_BOOLREV and parm2 is P_BOOL,
1783  false otherwise.
1784 ***************************************************************************/
1785
1786 static bool is_synonym_of(int parm1, int parm2, bool *inverse)
1787 {
1788         if ((parm_table[parm1].offset == parm_table[parm2].offset) &&
1789             (parm_table[parm1].p_class == parm_table[parm2].p_class) &&
1790             (parm_table[parm1].flags & FLAG_HIDE) &&
1791             !(parm_table[parm2].flags & FLAG_HIDE))
1792         {
1793                 if (inverse != NULL) {
1794                         if ((parm_table[parm1].type == P_BOOLREV) &&
1795                             (parm_table[parm2].type == P_BOOL))
1796                         {
1797                                 *inverse = true;
1798                         } else {
1799                                 *inverse = false;
1800                         }
1801                 }
1802                 return true;
1803         }
1804         return false;
1805 }
1806
1807 /***************************************************************************
1808  Show one parameter's name, type, [values,] and flags.
1809  (helper functions for show_parameter_list)
1810 ***************************************************************************/
1811
1812 static void show_parameter(int parmIndex)
1813 {
1814         int enumIndex, flagIndex;
1815         int parmIndex2;
1816         bool hadFlag;
1817         bool hadSyn;
1818         bool inverse;
1819         const char *type[] = { "P_BOOL", "P_BOOLREV", "P_CHAR", "P_INTEGER",
1820                 "P_OCTAL", "P_LIST", "P_STRING", "P_USTRING",
1821                 "P_ENUM", "P_SEP"};
1822         unsigned flags[] = { FLAG_BASIC, FLAG_SHARE, FLAG_PRINT, FLAG_GLOBAL,
1823                 FLAG_WIZARD, FLAG_ADVANCED, FLAG_DEVELOPER, FLAG_DEPRECATED,
1824                 FLAG_HIDE};
1825         const char *flag_names[] = { "FLAG_BASIC", "FLAG_SHARE", "FLAG_PRINT",
1826                 "FLAG_GLOBAL", "FLAG_WIZARD", "FLAG_ADVANCED", "FLAG_DEVELOPER",
1827                 "FLAG_DEPRECATED", "FLAG_HIDE", NULL};
1828
1829         printf("%s=%s", parm_table[parmIndex].label,
1830                type[parm_table[parmIndex].type]);
1831         if (parm_table[parmIndex].type == P_ENUM) {
1832                 printf(",");
1833                 for (enumIndex=0;
1834                      parm_table[parmIndex].enum_list[enumIndex].name;
1835                      enumIndex++)
1836                 {
1837                         printf("%s%s",
1838                                enumIndex ? "|" : "",
1839                                parm_table[parmIndex].enum_list[enumIndex].name);
1840                 }
1841         }
1842         printf(",");
1843         hadFlag = false;
1844         for (flagIndex=0; flag_names[flagIndex]; flagIndex++) {
1845                 if (parm_table[parmIndex].flags & flags[flagIndex]) {
1846                         printf("%s%s",
1847                                 hadFlag ? "|" : "",
1848                                 flag_names[flagIndex]);
1849                         hadFlag = true;
1850                 }
1851         }
1852
1853         /* output synonyms */
1854         hadSyn = false;
1855         for (parmIndex2=0; parm_table[parmIndex2].label; parmIndex2++) {
1856                 if (is_synonym_of(parmIndex, parmIndex2, &inverse)) {
1857                         printf(" (%ssynonym of %s)", inverse ? "inverse " : "",
1858                                parm_table[parmIndex2].label);
1859                 } else if (is_synonym_of(parmIndex2, parmIndex, &inverse)) {
1860                         if (!hadSyn) {
1861                                 printf(" (synonyms: ");
1862                                 hadSyn = true;
1863                         } else {
1864                                 printf(", ");
1865                         }
1866                         printf("%s%s", parm_table[parmIndex2].label,
1867                                inverse ? "[i]" : "");
1868                 }
1869         }
1870         if (hadSyn) {
1871                 printf(")");
1872         }
1873
1874         printf("\n");
1875 }
1876
1877 /***************************************************************************
1878  Show all parameter's name, type, [values,] and flags.
1879 ***************************************************************************/
1880
1881 void show_parameter_list(void)
1882 {
1883         int classIndex, parmIndex;
1884         const char *section_names[] = { "local", "global", NULL};
1885
1886         for (classIndex=0; section_names[classIndex]; classIndex++) {
1887                 printf("[%s]\n", section_names[classIndex]);
1888                 for (parmIndex = 0; parm_table[parmIndex].label; parmIndex++) {
1889                         if (parm_table[parmIndex].p_class == classIndex) {
1890                                 show_parameter(parmIndex);
1891                         }
1892                 }
1893         }
1894 }
1895
1896 /***************************************************************************
1897  Get the standard string representation of a boolean value ("yes" or "no")
1898 ***************************************************************************/
1899
1900 static const char *get_boolean(bool bool_value)
1901 {
1902         static const char *yes_str = "yes";
1903         static const char *no_str = "no";
1904
1905         return (bool_value ? yes_str : no_str);
1906 }
1907
1908 /***************************************************************************
1909  Provide the string of the negated boolean value associated to the boolean
1910  given as a string. Returns false if the passed string does not correctly
1911  represent a boolean.
1912 ***************************************************************************/
1913
1914 bool lp_invert_boolean(const char *str, const char **inverse_str)
1915 {
1916         bool val;
1917
1918         if (!set_boolean(str, &val)) {
1919                 return false;
1920         }
1921
1922         *inverse_str = get_boolean(!val);
1923         return true;
1924 }
1925
1926 /***************************************************************************
1927  Provide the canonical string representation of a boolean value given
1928  as a string. Return true on success, false if the string given does
1929  not correctly represent a boolean.
1930 ***************************************************************************/
1931
1932 bool lp_canonicalize_boolean(const char *str, const char**canon_str)
1933 {
1934         bool val;
1935
1936         if (!set_boolean(str, &val)) {
1937                 return false;
1938         }
1939
1940         *canon_str = get_boolean(val);
1941         return true;
1942 }
1943
1944 /***************************************************************************
1945 Find a service by name. Otherwise works like get_service.
1946 ***************************************************************************/
1947
1948 int getservicebyname(const char *pszServiceName, struct loadparm_service *pserviceDest)
1949 {
1950         int iService = -1;
1951         char *canon_name;
1952         TDB_DATA data;
1953         NTSTATUS status;
1954
1955         if (ServiceHash == NULL) {
1956                 return -1;
1957         }
1958
1959         canon_name = canonicalize_servicename(talloc_tos(), pszServiceName);
1960
1961         status = dbwrap_fetch_bystring(ServiceHash, canon_name, canon_name,
1962                                        &data);
1963
1964         if (NT_STATUS_IS_OK(status) &&
1965             (data.dptr != NULL) &&
1966             (data.dsize == sizeof(iService)))
1967         {
1968                 iService = *(int *)data.dptr;
1969         }
1970
1971         TALLOC_FREE(canon_name);
1972
1973         if ((iService != -1) && (LP_SNUM_OK(iService))
1974             && (pserviceDest != NULL)) {
1975                 copy_service(pserviceDest, ServicePtrs[iService], NULL);
1976         }
1977
1978         return (iService);
1979 }
1980
1981 /* Return a pointer to a service by name.  Unlike getservicebyname, it does not copy the service */
1982 struct loadparm_service *lp_service(const char *pszServiceName)
1983 {
1984         int iService = getservicebyname(pszServiceName, NULL);
1985         if (iService == -1 || !LP_SNUM_OK(iService)) {
1986                 return NULL;
1987         }
1988         return ServicePtrs[iService];
1989 }
1990
1991 struct loadparm_service *lp_servicebynum(int snum)
1992 {
1993         if ((snum == -1) || !LP_SNUM_OK(snum)) {
1994                 return NULL;
1995         }
1996         return ServicePtrs[snum];
1997 }
1998
1999 struct loadparm_service *lp_default_loadparm_service()
2000 {
2001         return &sDefault;
2002 }
2003
2004 /***************************************************************************
2005 Check a service for consistency. Return false if the service is in any way
2006 incomplete or faulty, else true.
2007 ***************************************************************************/
2008
2009 bool service_ok(int iService)
2010 {
2011         bool bRetval;
2012
2013         bRetval = true;
2014         if (ServicePtrs[iService]->szService[0] == '\0') {
2015                 DEBUG(0, ("The following message indicates an internal error:\n"));
2016                 DEBUG(0, ("No service name in service entry.\n"));
2017                 bRetval = false;
2018         }
2019
2020         /* The [printers] entry MUST be printable. I'm all for flexibility, but */
2021         /* I can't see why you'd want a non-printable printer service...        */
2022         if (strwicmp(ServicePtrs[iService]->szService, PRINTERS_NAME) == 0) {
2023                 if (!ServicePtrs[iService]->printable) {
2024                         DEBUG(0, ("WARNING: [%s] service MUST be printable!\n",
2025                                ServicePtrs[iService]->szService));
2026                         ServicePtrs[iService]->printable = true;
2027                 }
2028                 /* [printers] service must also be non-browsable. */
2029                 if (ServicePtrs[iService]->browseable)
2030                         ServicePtrs[iService]->browseable = false;
2031         }
2032
2033         if (ServicePtrs[iService]->path[0] == '\0' &&
2034             strwicmp(ServicePtrs[iService]->szService, HOMES_NAME) != 0 &&
2035             ServicePtrs[iService]->msdfs_proxy[0] == '\0'
2036             ) {
2037                 DEBUG(0, ("WARNING: No path in service %s - making it unavailable!\n",
2038                         ServicePtrs[iService]->szService));
2039                 ServicePtrs[iService]->bAvailable = false;
2040         }
2041
2042         /* If a service is flagged unavailable, log the fact at level 1. */
2043         if (!ServicePtrs[iService]->bAvailable)
2044                 DEBUG(1, ("NOTE: Service %s is flagged unavailable.\n",
2045                           ServicePtrs[iService]->szService));
2046
2047         return (bRetval);
2048 }
2049
2050 static struct smbconf_ctx *lp_smbconf_ctx(void)
2051 {
2052         sbcErr err;
2053         static struct smbconf_ctx *conf_ctx = NULL;
2054
2055         if (conf_ctx == NULL) {
2056                 err = smbconf_init(NULL, &conf_ctx, "registry:");
2057                 if (!SBC_ERROR_IS_OK(err)) {
2058                         DEBUG(1, ("error initializing registry configuration: "
2059                                   "%s\n", sbcErrorString(err)));
2060                         conf_ctx = NULL;
2061                 }
2062         }
2063
2064         return conf_ctx;
2065 }
2066
2067 static bool process_smbconf_service(struct smbconf_service *service)
2068 {
2069         uint32_t count;
2070         bool ret;
2071
2072         if (service == NULL) {
2073                 return false;
2074         }
2075
2076         ret = do_section(service->name, NULL);
2077         if (ret != true) {
2078                 return false;
2079         }
2080         for (count = 0; count < service->num_params; count++) {
2081                 ret = do_parameter(service->param_names[count],
2082                                    service->param_values[count],
2083                                    NULL);
2084                 if (ret != true) {
2085                         return false;
2086                 }
2087         }
2088         if (iServiceIndex >= 0) {
2089                 return service_ok(iServiceIndex);
2090         }
2091         return true;
2092 }
2093
2094 /**
2095  * load a service from registry and activate it
2096  */
2097 bool process_registry_service(const char *service_name)
2098 {
2099         sbcErr err;
2100         struct smbconf_service *service = NULL;
2101         TALLOC_CTX *mem_ctx = talloc_stackframe();
2102         struct smbconf_ctx *conf_ctx = lp_smbconf_ctx();
2103         bool ret = false;
2104
2105         if (conf_ctx == NULL) {
2106                 goto done;
2107         }
2108
2109         DEBUG(5, ("process_registry_service: service name %s\n", service_name));
2110
2111         if (!smbconf_share_exists(conf_ctx, service_name)) {
2112                 /*
2113                  * Registry does not contain data for this service (yet),
2114                  * but make sure lp_load doesn't return false.
2115                  */
2116                 ret = true;
2117                 goto done;
2118         }
2119
2120         err = smbconf_get_share(conf_ctx, mem_ctx, service_name, &service);
2121         if (!SBC_ERROR_IS_OK(err)) {
2122                 goto done;
2123         }
2124
2125         ret = process_smbconf_service(service);
2126         if (!ret) {
2127                 goto done;
2128         }
2129
2130         /* store the csn */
2131         smbconf_changed(conf_ctx, &conf_last_csn, NULL, NULL);
2132
2133 done:
2134         TALLOC_FREE(mem_ctx);
2135         return ret;
2136 }
2137
2138 /*
2139  * process_registry_globals
2140  */
2141 static bool process_registry_globals(void)
2142 {
2143         bool ret;
2144
2145         add_to_file_list(NULL, &file_lists, INCLUDE_REGISTRY_NAME, INCLUDE_REGISTRY_NAME);
2146
2147         ret = do_parameter("registry shares", "yes", NULL);
2148         if (!ret) {
2149                 return ret;
2150         }
2151
2152         return process_registry_service(GLOBAL_NAME);
2153 }
2154
2155 bool process_registry_shares(void)
2156 {
2157         sbcErr err;
2158         uint32_t count;
2159         struct smbconf_service **service = NULL;
2160         uint32_t num_shares = 0;
2161         TALLOC_CTX *mem_ctx = talloc_stackframe();
2162         struct smbconf_ctx *conf_ctx = lp_smbconf_ctx();
2163         bool ret = false;
2164
2165         if (conf_ctx == NULL) {
2166                 goto done;
2167         }
2168
2169         err = smbconf_get_config(conf_ctx, mem_ctx, &num_shares, &service);
2170         if (!SBC_ERROR_IS_OK(err)) {
2171                 goto done;
2172         }
2173
2174         ret = true;
2175
2176         for (count = 0; count < num_shares; count++) {
2177                 if (strequal(service[count]->name, GLOBAL_NAME)) {
2178                         continue;
2179                 }
2180                 ret = process_smbconf_service(service[count]);
2181                 if (!ret) {
2182                         goto done;
2183                 }
2184         }
2185
2186         /* store the csn */
2187         smbconf_changed(conf_ctx, &conf_last_csn, NULL, NULL);
2188
2189 done:
2190         TALLOC_FREE(mem_ctx);
2191         return ret;
2192 }
2193
2194 /**
2195  * reload those shares from registry that are already
2196  * activated in the services array.
2197  */
2198 static bool reload_registry_shares(void)
2199 {
2200         int i;
2201         bool ret = true;
2202
2203         for (i = 0; i < iNumServices; i++) {
2204                 if (!VALID(i)) {
2205                         continue;
2206                 }
2207
2208                 if (ServicePtrs[i]->usershare == USERSHARE_VALID) {
2209                         continue;
2210                 }
2211
2212                 ret = process_registry_service(ServicePtrs[i]->szService);
2213                 if (!ret) {
2214                         goto done;
2215                 }
2216         }
2217
2218 done:
2219         return ret;
2220 }
2221
2222
2223 #define MAX_INCLUDE_DEPTH 100
2224
2225 static uint8_t include_depth;
2226
2227 /**
2228  * Free the file lists
2229  */
2230 static void free_file_list(void)
2231 {
2232         struct file_lists *f;
2233         struct file_lists *next;
2234
2235         f = file_lists;
2236         while( f ) {
2237                 next = f->next;
2238                 TALLOC_FREE( f );
2239                 f = next;
2240         }
2241         file_lists = NULL;
2242 }
2243
2244
2245 /**
2246  * Utility function for outsiders to check if we're running on registry.
2247  */
2248 bool lp_config_backend_is_registry(void)
2249 {
2250         return (lp_config_backend() == CONFIG_BACKEND_REGISTRY);
2251 }
2252
2253 /**
2254  * Utility function to check if the config backend is FILE.
2255  */
2256 bool lp_config_backend_is_file(void)
2257 {
2258         return (lp_config_backend() == CONFIG_BACKEND_FILE);
2259 }
2260
2261 /*******************************************************************
2262  Check if a config file has changed date.
2263 ********************************************************************/
2264
2265 bool lp_file_list_changed(void)
2266 {
2267         struct file_lists *f = file_lists;
2268
2269         DEBUG(6, ("lp_file_list_changed()\n"));
2270
2271         while (f) {
2272                 time_t mod_time;
2273
2274                 if (strequal(f->name, INCLUDE_REGISTRY_NAME)) {
2275                         struct smbconf_ctx *conf_ctx = lp_smbconf_ctx();
2276
2277                         if (conf_ctx == NULL) {
2278                                 return false;
2279                         }
2280                         if (smbconf_changed(conf_ctx, &conf_last_csn, NULL,
2281                                             NULL))
2282                         {
2283                                 DEBUGADD(6, ("registry config changed\n"));
2284                                 return true;
2285                         }
2286                 } else {
2287                         char *n2 = NULL;
2288                         n2 = talloc_sub_basic(talloc_tos(),
2289                                               get_current_username(),
2290                                               current_user_info.domain,
2291                                               f->name);
2292                         if (!n2) {
2293                                 return false;
2294                         }
2295                         DEBUGADD(6, ("file %s -> %s  last mod_time: %s\n",
2296                                      f->name, n2, ctime(&f->modtime)));
2297
2298                         mod_time = file_modtime(n2);
2299
2300                         if (mod_time &&
2301                             ((f->modtime != mod_time) ||
2302                              (f->subfname == NULL) ||
2303                              (strcmp(n2, f->subfname) != 0)))
2304                         {
2305                                 DEBUGADD(6,
2306                                          ("file %s modified: %s\n", n2,
2307                                           ctime(&mod_time)));
2308                                 f->modtime = mod_time;
2309                                 TALLOC_FREE(f->subfname);
2310                                 f->subfname = talloc_strdup(f, n2);
2311                                 if (f->subfname == NULL) {
2312                                         smb_panic("talloc_strdup failed");
2313                                 }
2314                                 TALLOC_FREE(n2);
2315                                 return true;
2316                         }
2317                         TALLOC_FREE(n2);
2318                 }
2319                 f = f->next;
2320         }
2321         return false;
2322 }
2323
2324
2325 /**
2326  * Initialize iconv conversion descriptors.
2327  *
2328  * This is called the first time it is needed, and also called again
2329  * every time the configuration is reloaded, because the charset or
2330  * codepage might have changed.
2331  **/
2332 static void init_iconv(void)
2333 {
2334         global_iconv_handle = smb_iconv_handle_reinit(NULL, lp_dos_charset(),
2335                                                       lp_unix_charset(),
2336                                                       true, global_iconv_handle);
2337 }
2338
2339 /***************************************************************************
2340  Handle the include operation.
2341 ***************************************************************************/
2342 static bool bAllowIncludeRegistry = true;
2343
2344 bool lp_include(struct loadparm_context *unused, int snum, const char *pszParmValue, char **ptr)
2345 {
2346         char *fname;
2347
2348         if (include_depth >= MAX_INCLUDE_DEPTH) {
2349                 DEBUG(0, ("Error: Maximum include depth (%u) exceeded!\n",
2350                           include_depth));
2351                 return false;
2352         }
2353
2354         if (strequal(pszParmValue, INCLUDE_REGISTRY_NAME)) {
2355                 if (!bAllowIncludeRegistry) {
2356                         return true;
2357                 }
2358                 if (bInGlobalSection) {
2359                         bool ret;
2360                         include_depth++;
2361                         ret = process_registry_globals();
2362                         include_depth--;
2363                         return ret;
2364                 } else {
2365                         DEBUG(1, ("\"include = registry\" only effective "
2366                                   "in %s section\n", GLOBAL_NAME));
2367                         return false;
2368                 }
2369         }
2370
2371         fname = talloc_sub_basic(talloc_tos(), get_current_username(),
2372                                  current_user_info.domain,
2373                                  pszParmValue);
2374
2375         add_to_file_list(NULL, &file_lists, pszParmValue, fname);
2376
2377         if (snum < 0) {
2378                 string_set(Globals.ctx, ptr, fname);
2379         } else {
2380                 string_set(ServicePtrs[snum], ptr, fname);
2381         }
2382
2383         if (file_exist(fname)) {
2384                 bool ret;
2385                 include_depth++;
2386                 ret = pm_process(fname, do_section, do_parameter, NULL);
2387                 include_depth--;
2388                 TALLOC_FREE(fname);
2389                 return ret;
2390         }
2391
2392         DEBUG(2, ("Can't find include file %s\n", fname));
2393         TALLOC_FREE(fname);
2394         return true;
2395 }
2396
2397 bool lp_idmap_range(const char *domain_name, uint32_t *low, uint32_t *high)
2398 {
2399         char *config_option = NULL;
2400         const char *range = NULL;
2401         bool ret = false;
2402
2403         SMB_ASSERT(low != NULL);
2404         SMB_ASSERT(high != NULL);
2405
2406         if ((domain_name == NULL) || (domain_name[0] == '\0')) {
2407                 domain_name = "*";
2408         }
2409
2410         config_option = talloc_asprintf(talloc_tos(), "idmap config %s",
2411                                         domain_name);
2412         if (config_option == NULL) {
2413                 DEBUG(0, ("out of memory\n"));
2414                 return false;
2415         }
2416
2417         range = lp_parm_const_string(-1, config_option, "range", NULL);
2418         if (range == NULL) {
2419                 DEBUG(1, ("idmap range not specified for domain '%s'\n", domain_name));
2420                 goto done;
2421         }
2422
2423         if (sscanf(range, "%u - %u", low, high) != 2) {
2424                 DEBUG(1, ("error parsing idmap range '%s' for domain '%s'\n",
2425                           range, domain_name));
2426                 goto done;
2427         }
2428
2429         ret = true;
2430
2431 done:
2432         talloc_free(config_option);
2433         return ret;
2434
2435 }
2436
2437 bool lp_idmap_default_range(uint32_t *low, uint32_t *high)
2438 {
2439         return lp_idmap_range("*", low, high);
2440 }
2441
2442 const char *lp_idmap_backend(const char *domain_name)
2443 {
2444         char *config_option = NULL;
2445         const char *backend = NULL;
2446
2447         if ((domain_name == NULL) || (domain_name[0] == '\0')) {
2448                 domain_name = "*";
2449         }
2450
2451         config_option = talloc_asprintf(talloc_tos(), "idmap config %s",
2452                                         domain_name);
2453         if (config_option == NULL) {
2454                 DEBUG(0, ("out of memory\n"));
2455                 return false;
2456         }
2457
2458         backend = lp_parm_const_string(-1, config_option, "backend", NULL);
2459         if (backend == NULL) {
2460                 DEBUG(1, ("idmap backend not specified for domain '%s'\n", domain_name));
2461                 goto done;
2462         }
2463
2464 done:
2465         talloc_free(config_option);
2466         return backend;
2467 }
2468
2469 const char *lp_idmap_default_backend(void)
2470 {
2471         return lp_idmap_backend("*");
2472 }
2473
2474 /***************************************************************************
2475  Handle ldap suffixes - default to ldapsuffix if sub-suffixes are not defined.
2476 ***************************************************************************/
2477
2478 static const char *append_ldap_suffix(TALLOC_CTX *ctx, const char *str )
2479 {
2480         const char *suffix_string;
2481
2482         suffix_string = talloc_asprintf(ctx, "%s,%s", str,
2483                                         Globals.ldap_suffix );
2484         if ( !suffix_string ) {
2485                 DEBUG(0,("append_ldap_suffix: talloc_asprintf() failed!\n"));
2486                 return "";
2487         }
2488
2489         return suffix_string;
2490 }
2491
2492 const char *lp_ldap_machine_suffix(TALLOC_CTX *ctx)
2493 {
2494         if (Globals.szLdapMachineSuffix[0])
2495                 return append_ldap_suffix(ctx, Globals.szLdapMachineSuffix);
2496
2497         return lp_string(ctx, Globals.ldap_suffix);
2498 }
2499
2500 const char *lp_ldap_user_suffix(TALLOC_CTX *ctx)
2501 {
2502         if (Globals.szLdapUserSuffix[0])
2503                 return append_ldap_suffix(ctx, Globals.szLdapUserSuffix);
2504
2505         return lp_string(ctx, Globals.ldap_suffix);
2506 }
2507
2508 const char *lp_ldap_group_suffix(TALLOC_CTX *ctx)
2509 {
2510         if (Globals.szLdapGroupSuffix[0])
2511                 return append_ldap_suffix(ctx, Globals.szLdapGroupSuffix);
2512
2513         return lp_string(ctx, Globals.ldap_suffix);
2514 }
2515
2516 const char *lp_ldap_idmap_suffix(TALLOC_CTX *ctx)
2517 {
2518         if (Globals.szLdapIdmapSuffix[0])
2519                 return append_ldap_suffix(ctx, Globals.szLdapIdmapSuffix);
2520
2521         return lp_string(ctx, Globals.ldap_suffix);
2522 }
2523
2524 /**
2525   return the parameter pointer for a parameter
2526 */
2527 void *lp_parm_ptr(struct loadparm_service *service, struct parm_struct *parm)
2528 {
2529         if (service == NULL) {
2530                 if (parm->p_class == P_LOCAL)
2531                         return (void *)(((char *)&sDefault)+parm->offset);
2532                 else if (parm->p_class == P_GLOBAL)
2533                         return (void *)(((char *)&Globals)+parm->offset);
2534                 else return NULL;
2535         } else {
2536                 return (void *)(((char *)service) + parm->offset);
2537         }
2538 }
2539
2540 /***************************************************************************
2541  Return the local pointer to a parameter given the service number and parameter
2542 ***************************************************************************/
2543
2544 void *lp_local_ptr_by_snum(int snum, struct parm_struct *parm)
2545 {
2546         return lp_parm_ptr(ServicePtrs[snum], parm);
2547 }
2548
2549 /***************************************************************************
2550  Process a parameter for a particular service number. If snum < 0
2551  then assume we are in the globals.
2552 ***************************************************************************/
2553
2554 bool lp_do_parameter(int snum, const char *pszParmName, const char *pszParmValue)
2555 {
2556         int parmnum, i;
2557         void *parm_ptr = NULL;  /* where we are going to store the result */
2558         struct parmlist_entry **opt_list;
2559         TALLOC_CTX *mem_ctx;
2560         TALLOC_CTX *frame = talloc_stackframe();
2561
2562         parmnum = lpcfg_map_parameter(pszParmName);
2563
2564         if (parmnum < 0) {
2565                 if (strchr(pszParmName, ':') == NULL) {
2566                         DEBUG(0, ("Ignoring unknown parameter \"%s\"\n",
2567                                   pszParmName));
2568                         TALLOC_FREE(frame);
2569                         return true;
2570                 }
2571
2572                 /*
2573                  * We've got a parametric option
2574                  */
2575
2576                 if (snum < 0) {
2577                         opt_list = &Globals.param_opt;
2578                         set_param_opt(NULL, opt_list, pszParmName, pszParmValue, 0);
2579                 } else {
2580                         opt_list = &ServicePtrs[snum]->param_opt;
2581                         set_param_opt(ServicePtrs[snum], opt_list, pszParmName, pszParmValue, 0);
2582                 }
2583
2584                 TALLOC_FREE(frame);
2585                 return true;
2586         }
2587
2588         /* if it's already been set by the command line, then we don't
2589            override here */
2590         if (parm_table[parmnum].flags & FLAG_CMDLINE) {
2591                 TALLOC_FREE(frame);
2592                 return true;
2593         }
2594
2595         if (parm_table[parmnum].flags & FLAG_DEPRECATED) {
2596                 DEBUG(1, ("WARNING: The \"%s\" option is deprecated\n",
2597                           pszParmName));
2598         }
2599
2600         /* we might point at a service, the default service or a global */
2601         if (snum < 0) {
2602                 parm_ptr = lp_parm_ptr(NULL, &parm_table[parmnum]);
2603         } else {
2604                 if (parm_table[parmnum].p_class == P_GLOBAL) {
2605                         DEBUG(0,
2606                               ("Global parameter %s found in service section!\n",
2607                                pszParmName));
2608                         TALLOC_FREE(frame);
2609                         return true;
2610                 }
2611                 parm_ptr = lp_local_ptr_by_snum(snum, &parm_table[parmnum]);
2612         }
2613
2614         if (snum >= 0) {
2615                 if (!ServicePtrs[snum]->copymap)
2616                         init_copymap(ServicePtrs[snum]);
2617
2618                 /* this handles the aliases - set the copymap for other entries with
2619                    the same data pointer */
2620                 for (i = 0; parm_table[i].label; i++) {
2621                         if ((parm_table[i].offset == parm_table[parmnum].offset)
2622                             && (parm_table[i].p_class == parm_table[parmnum].p_class)) {
2623                                 bitmap_clear(ServicePtrs[snum]->copymap, i);
2624                         }
2625                 }
2626                 mem_ctx = ServicePtrs[snum];
2627         } else {
2628                 mem_ctx = Globals.ctx;
2629         }
2630
2631         /* if it is a special case then go ahead */
2632         if (parm_table[parmnum].special) {
2633                 bool ok;
2634                 struct loadparm_context *lp_ctx = loadparm_init_s3(frame,
2635                                                                    loadparm_s3_helpers());
2636                 lp_ctx->sDefault = &sDefault;
2637                 lp_ctx->services = ServicePtrs;
2638                 ok = parm_table[parmnum].special(lp_ctx, snum, pszParmValue,
2639                                                   (char **)parm_ptr);
2640                 TALLOC_FREE(frame);
2641                 return ok;
2642         }
2643
2644         TALLOC_FREE(frame);
2645         return set_variable_helper(mem_ctx, parmnum, parm_ptr, pszParmName, pszParmValue);
2646 }
2647
2648 /***************************************************************************
2649 set a parameter, marking it with FLAG_CMDLINE. Parameters marked as
2650 FLAG_CMDLINE won't be overridden by loads from smb.conf.
2651 ***************************************************************************/
2652
2653 static bool lp_set_cmdline_helper(const char *pszParmName, const char *pszParmValue)
2654 {
2655         int parmnum, i;
2656         parmnum = lpcfg_map_parameter(pszParmName);
2657         if (parmnum >= 0) {
2658                 parm_table[parmnum].flags &= ~FLAG_CMDLINE;
2659                 if (!lp_do_parameter(-1, pszParmName, pszParmValue)) {
2660                         return false;
2661                 }
2662                 parm_table[parmnum].flags |= FLAG_CMDLINE;
2663
2664                 /* we have to also set FLAG_CMDLINE on aliases.  Aliases must
2665                  * be grouped in the table, so we don't have to search the
2666                  * whole table */
2667                 for (i=parmnum-1;
2668                      i>=0 && parm_table[i].offset == parm_table[parmnum].offset
2669                              && parm_table[i].p_class == parm_table[parmnum].p_class;
2670                      i--) {
2671                         parm_table[i].flags |= FLAG_CMDLINE;
2672                 }
2673                 for (i=parmnum+1;i<num_parameters() && parm_table[i].offset == parm_table[parmnum].offset
2674                              && parm_table[i].p_class == parm_table[parmnum].p_class;i++) {
2675                         parm_table[i].flags |= FLAG_CMDLINE;
2676                 }
2677
2678                 return true;
2679         }
2680
2681         /* it might be parametric */
2682         if (strchr(pszParmName, ':') != NULL) {
2683                 set_param_opt(NULL, &Globals.param_opt, pszParmName, pszParmValue, FLAG_CMDLINE);
2684                 return true;
2685         }
2686
2687         DEBUG(0, ("Ignoring unknown parameter \"%s\"\n",  pszParmName));
2688         return false;
2689 }
2690
2691 bool lp_set_cmdline(const char *pszParmName, const char *pszParmValue)
2692 {
2693         bool ret;
2694         TALLOC_CTX *frame = talloc_stackframe();
2695
2696         ret = lp_set_cmdline_helper(pszParmName, pszParmValue);
2697         if (ret) {
2698                 store_lp_set_cmdline(pszParmName, pszParmValue);
2699         }
2700
2701         TALLOC_FREE(frame);
2702         return ret;
2703 }
2704
2705 /***************************************************************************
2706  Process a parameter.
2707 ***************************************************************************/
2708
2709 static bool do_parameter(const char *pszParmName, const char *pszParmValue,
2710                          void *userdata)
2711 {
2712         if (!bInGlobalSection && bGlobalOnly)
2713                 return true;
2714
2715         DEBUGADD(4, ("doing parameter %s = %s\n", pszParmName, pszParmValue));
2716
2717         return (lp_do_parameter(bInGlobalSection ? -2 : iServiceIndex,
2718                                 pszParmName, pszParmValue));
2719 }
2720
2721 /***************************************************************************
2722  Initialize any local variables in the sDefault table, after parsing a
2723  [globals] section.
2724 ***************************************************************************/
2725
2726 static void init_locals(void)
2727 {
2728         /*
2729          * We run this check once the [globals] is parsed, to force
2730          * the VFS objects and other per-share settings we need for
2731          * the standard way a AD DC is operated.  We may change these
2732          * as our code evolves, which is why we force these settings.
2733          *
2734          * We can't do this at the end of lp_load_ex(), as by that
2735          * point the services have been loaded and they will already
2736          * have "" as their vfs objects.
2737          */
2738         if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC) {
2739                 const char **vfs_objects = lp_vfs_objects(-1);
2740                 if (!vfs_objects || !vfs_objects[0]) {
2741                         if (lp_parm_const_string(-1, "xattr_tdb", "file", NULL)) {
2742                                 lp_do_parameter(-1, "vfs objects", "dfs_samba4 acl_xattr xattr_tdb");
2743                         } else if (lp_parm_const_string(-1, "posix", "eadb", NULL)) {
2744                                 lp_do_parameter(-1, "vfs objects", "dfs_samba4 acl_xattr posix_eadb");
2745                         } else {
2746                                 lp_do_parameter(-1, "vfs objects", "dfs_samba4 acl_xattr");
2747                         }
2748                 }
2749
2750                 lp_do_parameter(-1, "map hidden", "no");
2751                 lp_do_parameter(-1, "map system", "no");
2752                 lp_do_parameter(-1, "map readonly", "no");
2753                 lp_do_parameter(-1, "map archive", "no");
2754                 lp_do_parameter(-1, "store dos attributes", "yes");
2755         }
2756 }
2757
2758 /***************************************************************************
2759  Process a new section (service). At this stage all sections are services.
2760  Later we'll have special sections that permit server parameters to be set.
2761  Returns true on success, false on failure.
2762 ***************************************************************************/
2763
2764 static bool do_section(const char *pszSectionName, void *userdata)
2765 {
2766         bool bRetval;
2767         bool isglobal = ((strwicmp(pszSectionName, GLOBAL_NAME) == 0) ||
2768                          (strwicmp(pszSectionName, GLOBAL_NAME2) == 0));
2769         bRetval = false;
2770
2771         /* if we were in a global section then do the local inits */
2772         if (bInGlobalSection && !isglobal)
2773                 init_locals();
2774
2775         /* if we've just struck a global section, note the fact. */
2776         bInGlobalSection = isglobal;
2777
2778         /* check for multiple global sections */
2779         if (bInGlobalSection) {
2780                 DEBUG(3, ("Processing section \"[%s]\"\n", pszSectionName));
2781                 return true;
2782         }
2783
2784         if (!bInGlobalSection && bGlobalOnly)
2785                 return true;
2786
2787         /* if we have a current service, tidy it up before moving on */
2788         bRetval = true;
2789
2790         if (iServiceIndex >= 0)
2791                 bRetval = service_ok(iServiceIndex);
2792
2793         /* if all is still well, move to the next record in the services array */
2794         if (bRetval) {
2795                 /* We put this here to avoid an odd message order if messages are */
2796                 /* issued by the post-processing of a previous section. */
2797                 DEBUG(2, ("Processing section \"[%s]\"\n", pszSectionName));
2798
2799                 iServiceIndex = add_a_service(&sDefault, pszSectionName);
2800                 if (iServiceIndex < 0) {
2801                         DEBUG(0, ("Failed to add a new service\n"));
2802                         return false;
2803                 }
2804                 /* Clean all parametric options for service */
2805                 /* They will be added during parsing again */
2806                 free_param_opts(&ServicePtrs[iServiceIndex]->param_opt);
2807         }
2808
2809         return bRetval;
2810 }
2811
2812
2813 /***************************************************************************
2814  Determine if a partcular base parameter is currentl set to the default value.
2815 ***************************************************************************/
2816
2817 static bool is_default(int i)
2818 {
2819         switch (parm_table[i].type) {
2820                 case P_LIST:
2821                 case P_CMDLIST:
2822                         return str_list_equal((const char * const *)parm_table[i].def.lvalue,
2823                                               *(const char ***)lp_parm_ptr(NULL,
2824                                                                            &parm_table[i]));
2825                 case P_STRING:
2826                 case P_USTRING:
2827                         return strequal(parm_table[i].def.svalue,
2828                                         *(char **)lp_parm_ptr(NULL,
2829                                                               &parm_table[i]));
2830                 case P_BOOL:
2831                 case P_BOOLREV:
2832                         return parm_table[i].def.bvalue ==
2833                                 *(bool *)lp_parm_ptr(NULL,
2834                                                      &parm_table[i]);
2835                 case P_CHAR:
2836                         return parm_table[i].def.cvalue ==
2837                                 *(char *)lp_parm_ptr(NULL,
2838                                                      &parm_table[i]);
2839                 case P_INTEGER:
2840                 case P_OCTAL:
2841                 case P_ENUM:
2842                 case P_BYTES:
2843                         return parm_table[i].def.ivalue ==
2844                                 *(int *)lp_parm_ptr(NULL,
2845                                                     &parm_table[i]);
2846                 case P_SEP:
2847                         break;
2848         }
2849         return false;
2850 }
2851
2852 /***************************************************************************
2853 Display the contents of the global structure.
2854 ***************************************************************************/
2855
2856 static void dump_globals(FILE *f, bool show_defaults)
2857 {
2858         int i;
2859         struct parmlist_entry *data;
2860
2861         fprintf(f, "[global]\n");
2862
2863         for (i = 0; parm_table[i].label; i++)
2864                 if (parm_table[i].p_class == P_GLOBAL &&
2865                     !(parm_table[i].flags & FLAG_META) &&
2866                     (i == 0 || (parm_table[i].offset != parm_table[i - 1].offset))) {
2867                         if (show_defaults && is_default(i))
2868                                 continue;
2869                         fprintf(f, "\t%s = ", parm_table[i].label);
2870                         lpcfg_print_parameter(&parm_table[i], lp_parm_ptr(NULL,
2871                                                                           &parm_table[i]),
2872                                         f);
2873                         fprintf(f, "\n");
2874         }
2875         if (Globals.param_opt != NULL) {
2876                 data = Globals.param_opt;
2877                 while(data) {
2878                         fprintf(f, "\t%s = %s\n", data->key, data->value);
2879                         data = data->next;
2880                 }
2881         }
2882
2883 }
2884
2885 /***************************************************************************
2886  Display the contents of a single services record.
2887 ***************************************************************************/
2888
2889 static void dump_a_service(struct loadparm_service *pService, FILE * f, bool show_defaults)
2890 {
2891         return lpcfg_dump_a_service(pService, &sDefault, f, NULL, show_defaults);
2892 }
2893
2894 /***************************************************************************
2895  Display the contents of a parameter of a single services record.
2896 ***************************************************************************/
2897
2898 bool dump_a_parameter(int snum, char *parm_name, FILE * f, bool isGlobal)
2899 {
2900         bool result = false;
2901
2902         struct loadparm_context *lp_ctx;
2903
2904         lp_ctx = loadparm_init_s3(talloc_tos(), loadparm_s3_helpers());
2905         if (lp_ctx == NULL) {
2906                 return false;
2907         }
2908
2909         if (isGlobal) {
2910                 result = lpcfg_dump_a_parameter(lp_ctx, NULL, parm_name, f);
2911         } else {
2912                 result = lpcfg_dump_a_parameter(lp_ctx, ServicePtrs[snum], parm_name, f);
2913         }
2914         TALLOC_FREE(lp_ctx);
2915         return result;
2916 }
2917
2918 /***************************************************************************
2919  Return info about the requested parameter (given as a string).
2920  Return NULL when the string is not a valid parameter name.
2921 ***************************************************************************/
2922
2923 struct parm_struct *lp_get_parameter(const char *param_name)
2924 {
2925         int num = lpcfg_map_parameter(param_name);
2926
2927         if (num < 0) {
2928                 return NULL;
2929         }
2930
2931         return &parm_table[num];
2932 }
2933
2934 #if 0
2935 /***************************************************************************
2936  Display the contents of a single copy structure.
2937 ***************************************************************************/
2938 static void dump_copy_map(bool *pcopymap)
2939 {
2940         int i;
2941         if (!pcopymap)
2942                 return;
2943
2944         printf("\n\tNon-Copied parameters:\n");
2945
2946         for (i = 0; parm_table[i].label; i++)
2947                 if (parm_table[i].p_class == P_LOCAL &&
2948                     parm_table[i].ptr && !pcopymap[i] &&
2949                     (i == 0 || (parm_table[i].ptr != parm_table[i - 1].ptr)))
2950                 {
2951                         printf("\t\t%s\n", parm_table[i].label);
2952                 }
2953 }
2954 #endif
2955
2956 /***************************************************************************
2957  Return TRUE if the passed service number is within range.
2958 ***************************************************************************/
2959
2960 bool lp_snum_ok(int iService)
2961 {
2962         return (LP_SNUM_OK(iService) && ServicePtrs[iService]->bAvailable);
2963 }
2964
2965 /***************************************************************************
2966  Auto-load some home services.
2967 ***************************************************************************/
2968
2969 static void lp_add_auto_services(char *str)
2970 {
2971         char *s;
2972         char *p;
2973         int homes;
2974         char *saveptr;
2975
2976         if (!str)
2977                 return;
2978
2979         s = talloc_strdup(talloc_tos(), str);
2980         if (!s) {
2981                 smb_panic("talloc_strdup failed");
2982                 return;
2983         }
2984
2985         homes = lp_servicenumber(HOMES_NAME);
2986
2987         for (p = strtok_r(s, LIST_SEP, &saveptr); p;
2988              p = strtok_r(NULL, LIST_SEP, &saveptr)) {
2989                 char *home;
2990
2991                 if (lp_servicenumber(p) >= 0)
2992                         continue;
2993
2994                 home = get_user_home_dir(talloc_tos(), p);
2995
2996                 if (home && home[0] && homes >= 0)
2997                         lp_add_home(p, homes, p, home);
2998
2999                 TALLOC_FREE(home);
3000         }
3001         TALLOC_FREE(s);
3002 }
3003
3004 /***************************************************************************
3005  Auto-load one printer.
3006 ***************************************************************************/
3007
3008 void lp_add_one_printer(const char *name, const char *comment,
3009                         const char *location, void *pdata)
3010 {
3011         int printers = lp_servicenumber(PRINTERS_NAME);
3012         int i;
3013
3014         if (lp_servicenumber(name) < 0) {
3015                 lp_add_printer(name, printers);
3016                 if ((i = lp_servicenumber(name)) >= 0) {
3017                         string_set(ServicePtrs[i], &ServicePtrs[i]->comment, comment);
3018                         ServicePtrs[i]->autoloaded = true;
3019                 }
3020         }
3021 }
3022
3023 /***************************************************************************
3024  Have we loaded a services file yet?
3025 ***************************************************************************/
3026
3027 bool lp_loaded(void)
3028 {
3029         return (bLoaded);
3030 }
3031
3032 /***************************************************************************
3033  Unload unused services.
3034 ***************************************************************************/
3035
3036 void lp_killunused(struct smbd_server_connection *sconn,
3037                    bool (*snumused) (struct smbd_server_connection *, int))
3038 {
3039         int i;
3040         for (i = 0; i < iNumServices; i++) {
3041                 if (!VALID(i))
3042                         continue;
3043
3044                 /* don't kill autoloaded or usershare services */
3045                 if ( ServicePtrs[i]->autoloaded ||
3046                                 ServicePtrs[i]->usershare == USERSHARE_VALID) {
3047                         continue;
3048                 }
3049
3050                 if (!snumused || !snumused(sconn, i)) {
3051                         free_service_byindex(i);
3052                 }
3053         }
3054 }
3055
3056 /**
3057  * Kill all except autoloaded and usershare services - convenience wrapper
3058  */
3059 void lp_kill_all_services(void)
3060 {
3061         lp_killunused(NULL, NULL);
3062 }
3063
3064 /***************************************************************************
3065  Unload a service.
3066 ***************************************************************************/
3067
3068 void lp_killservice(int iServiceIn)
3069 {
3070         if (VALID(iServiceIn)) {
3071                 free_service_byindex(iServiceIn);
3072         }
3073 }
3074
3075 /***************************************************************************
3076  Save the curent values of all global and sDefault parameters into the
3077  defaults union. This allows testparm to show only the
3078  changed (ie. non-default) parameters.
3079 ***************************************************************************/
3080
3081 static void lp_save_defaults(void)
3082 {
3083         int i;
3084         for (i = 0; parm_table[i].label; i++) {
3085                 if (i > 0 && parm_table[i].offset == parm_table[i - 1].offset
3086                     && parm_table[i].p_class == parm_table[i - 1].p_class)
3087                         continue;
3088                 switch (parm_table[i].type) {
3089                         case P_LIST:
3090                         case P_CMDLIST:
3091                                 parm_table[i].def.lvalue = str_list_copy(
3092                                         NULL, *(const char ***)lp_parm_ptr(NULL, &parm_table[i]));
3093                                 break;
3094                         case P_STRING:
3095                         case P_USTRING:
3096                                 parm_table[i].def.svalue = talloc_strdup(Globals.ctx, *(char **)lp_parm_ptr(NULL, &parm_table[i]));
3097                                 if (parm_table[i].def.svalue == NULL) {
3098                                         smb_panic("talloc_strdup failed");
3099                                 }
3100                                 break;
3101                         case P_BOOL:
3102                         case P_BOOLREV:
3103                                 parm_table[i].def.bvalue =
3104                                         *(bool *)lp_parm_ptr(NULL, &parm_table[i]);
3105                                 break;
3106                         case P_CHAR:
3107                                 parm_table[i].def.cvalue =
3108                                         *(char *)lp_parm_ptr(NULL, &parm_table[i]);
3109                                 break;
3110                         case P_INTEGER:
3111                         case P_OCTAL:
3112                         case P_ENUM:
3113                         case P_BYTES:
3114                                 parm_table[i].def.ivalue =
3115                                         *(int *)lp_parm_ptr(NULL, &parm_table[i]);
3116                                 break;
3117                         case P_SEP:
3118                                 break;
3119                 }
3120         }
3121         defaults_saved = true;
3122 }
3123
3124 /***********************************************************
3125  If we should send plaintext/LANMAN passwords in the clinet
3126 ************************************************************/
3127
3128 static void set_allowed_client_auth(void)
3129 {
3130         if (Globals.client_ntlmv2_auth) {
3131                 Globals.client_lanman_auth = false;
3132         }
3133         if (!Globals.client_lanman_auth) {
3134                 Globals.client_plaintext_auth = false;
3135         }
3136 }
3137
3138 /***************************************************************************
3139  JRA.
3140  The following code allows smbd to read a user defined share file.
3141  Yes, this is my intent. Yes, I'm comfortable with that...
3142
3143  THE FOLLOWING IS SECURITY CRITICAL CODE.
3144
3145  It washes your clothes, it cleans your house, it guards you while you sleep...
3146  Do not f%^k with it....
3147 ***************************************************************************/
3148
3149 #define MAX_USERSHARE_FILE_SIZE (10*1024)
3150
3151 /***************************************************************************
3152  Check allowed stat state of a usershare file.
3153  Ensure we print out who is dicking with us so the admin can
3154  get their sorry ass fired.
3155 ***************************************************************************/
3156
3157 static bool check_usershare_stat(const char *fname,
3158                                  const SMB_STRUCT_STAT *psbuf)
3159 {
3160         if (!S_ISREG(psbuf->st_ex_mode)) {
3161                 DEBUG(0,("check_usershare_stat: file %s owned by uid %u is "
3162                         "not a regular file\n",
3163                         fname, (unsigned int)psbuf->st_ex_uid ));
3164                 return false;
3165         }
3166
3167         /* Ensure this doesn't have the other write bit set. */
3168         if (psbuf->st_ex_mode & S_IWOTH) {
3169                 DEBUG(0,("check_usershare_stat: file %s owned by uid %u allows "
3170                         "public write. Refusing to allow as a usershare file.\n",
3171                         fname, (unsigned int)psbuf->st_ex_uid ));
3172                 return false;
3173         }
3174
3175         /* Should be 10k or less. */
3176         if (psbuf->st_ex_size > MAX_USERSHARE_FILE_SIZE) {
3177                 DEBUG(0,("check_usershare_stat: file %s owned by uid %u is "
3178                         "too large (%u) to be a user share file.\n",
3179                         fname, (unsigned int)psbuf->st_ex_uid,
3180                         (unsigned int)psbuf->st_ex_size ));
3181                 return false;
3182         }
3183
3184         return true;
3185 }
3186
3187 /***************************************************************************
3188  Parse the contents of a usershare file.
3189 ***************************************************************************/
3190
3191 enum usershare_err parse_usershare_file(TALLOC_CTX *ctx,
3192                         SMB_STRUCT_STAT *psbuf,
3193                         const char *servicename,
3194                         int snum,
3195                         char **lines,
3196                         int numlines,
3197                         char **pp_sharepath,
3198                         char **pp_comment,
3199                         char **pp_cp_servicename,
3200                         struct security_descriptor **ppsd,
3201                         bool *pallow_guest)
3202 {
3203         const char **prefixallowlist = lp_usershare_prefix_allow_list();
3204         const char **prefixdenylist = lp_usershare_prefix_deny_list();
3205         int us_vers;
3206         DIR *dp;
3207         SMB_STRUCT_STAT sbuf;
3208         char *sharepath = NULL;
3209         char *comment = NULL;
3210
3211         *pp_sharepath = NULL;
3212         *pp_comment = NULL;
3213
3214         *pallow_guest = false;
3215
3216         if (numlines < 4) {
3217                 return USERSHARE_MALFORMED_FILE;
3218         }
3219
3220         if (strcmp(lines[0], "#VERSION 1") == 0) {
3221                 us_vers = 1;
3222         } else if (strcmp(lines[0], "#VERSION 2") == 0) {
3223                 us_vers = 2;
3224                 if (numlines < 5) {
3225                         return USERSHARE_MALFORMED_FILE;
3226                 }
3227         } else {
3228                 return USERSHARE_BAD_VERSION;
3229         }
3230
3231         if (strncmp(lines[1], "path=", 5) != 0) {
3232                 return USERSHARE_MALFORMED_PATH;
3233         }
3234
3235         sharepath = talloc_strdup(ctx, &lines[1][5]);
3236         if (!sharepath) {
3237                 return USERSHARE_POSIX_ERR;
3238         }
3239         trim_string(sharepath, " ", " ");
3240
3241         if (strncmp(lines[2], "comment=", 8) != 0) {
3242                 return USERSHARE_MALFORMED_COMMENT_DEF;
3243         }
3244
3245         comment = talloc_strdup(ctx, &lines[2][8]);
3246         if (!comment) {
3247                 return USERSHARE_POSIX_ERR;
3248         }
3249         trim_string(comment, " ", " ");
3250         trim_char(comment, '"', '"');
3251
3252         if (strncmp(lines[3], "usershare_acl=", 14) != 0) {
3253                 return USERSHARE_MALFORMED_ACL_DEF;
3254         }
3255
3256         if (!parse_usershare_acl(ctx, &lines[3][14], ppsd)) {
3257                 return USERSHARE_ACL_ERR;
3258         }
3259
3260         if (us_vers == 2) {
3261                 if (strncmp(lines[4], "guest_ok=", 9) != 0) {
3262                         return USERSHARE_MALFORMED_ACL_DEF;
3263                 }
3264                 if (lines[4][9] == 'y') {
3265                         *pallow_guest = true;
3266                 }
3267
3268                 /* Backwards compatible extension to file version #2. */
3269                 if (numlines > 5) {
3270                         if (strncmp(lines[5], "sharename=", 10) != 0) {
3271                                 return USERSHARE_MALFORMED_SHARENAME_DEF;
3272                         }
3273                         if (!strequal(&lines[5][10], servicename)) {
3274                                 return USERSHARE_BAD_SHARENAME;
3275                         }
3276                         *pp_cp_servicename = talloc_strdup(ctx, &lines[5][10]);
3277                         if (!*pp_cp_servicename) {
3278                                 return USERSHARE_POSIX_ERR;
3279                         }
3280                 }
3281         }
3282
3283         if (*pp_cp_servicename == NULL) {
3284                 *pp_cp_servicename = talloc_strdup(ctx, servicename);
3285                 if (!*pp_cp_servicename) {
3286                         return USERSHARE_POSIX_ERR;
3287                 }
3288         }
3289
3290         if (snum != -1 && (strcmp(sharepath, ServicePtrs[snum]->path) == 0)) {
3291                 /* Path didn't change, no checks needed. */
3292                 *pp_sharepath = sharepath;
3293                 *pp_comment = comment;
3294                 return USERSHARE_OK;
3295         }
3296
3297         /* The path *must* be absolute. */
3298         if (sharepath[0] != '/') {
3299                 DEBUG(2,("parse_usershare_file: share %s: path %s is not an absolute path.\n",
3300                         servicename, sharepath));
3301                 return USERSHARE_PATH_NOT_ABSOLUTE;
3302         }
3303
3304         /* If there is a usershare prefix deny list ensure one of these paths
3305            doesn't match the start of the user given path. */
3306         if (prefixdenylist) {
3307                 int i;
3308                 for ( i=0; prefixdenylist[i]; i++ ) {
3309                         DEBUG(10,("parse_usershare_file: share %s : checking prefixdenylist[%d]='%s' against %s\n",
3310                                 servicename, i, prefixdenylist[i], sharepath ));
3311                         if (memcmp( sharepath, prefixdenylist[i], strlen(prefixdenylist[i])) == 0) {
3312                                 DEBUG(2,("parse_usershare_file: share %s path %s starts with one of the "
3313                                         "usershare prefix deny list entries.\n",
3314                                         servicename, sharepath));
3315                                 return USERSHARE_PATH_IS_DENIED;
3316                         }
3317                 }
3318         }
3319
3320         /* If there is a usershare prefix allow list ensure one of these paths
3321            does match the start of the user given path. */
3322
3323         if (prefixallowlist) {
3324                 int i;
3325                 for ( i=0; prefixallowlist[i]; i++ ) {
3326                         DEBUG(10,("parse_usershare_file: share %s checking prefixallowlist[%d]='%s' against %s\n",
3327                                 servicename, i, prefixallowlist[i], sharepath ));
3328                         if (memcmp( sharepath, prefixallowlist[i], strlen(prefixallowlist[i])) == 0) {
3329                                 break;
3330                         }
3331                 }
3332                 if (prefixallowlist[i] == NULL) {
3333                         DEBUG(2,("parse_usershare_file: share %s path %s doesn't start with one of the "
3334                                 "usershare prefix allow list entries.\n",
3335                                 servicename, sharepath));
3336                         return USERSHARE_PATH_NOT_ALLOWED;
3337                 }
3338         }
3339
3340         /* Ensure this is pointing to a directory. */
3341         dp = opendir(sharepath);
3342
3343         if (!dp) {
3344                 DEBUG(2,("parse_usershare_file: share %s path %s is not a directory.\n",
3345                         servicename, sharepath));
3346                 return USERSHARE_PATH_NOT_DIRECTORY;
3347         }
3348
3349         /* Ensure the owner of the usershare file has permission to share
3350            this directory. */
3351
3352         if (sys_stat(sharepath, &sbuf, false) == -1) {
3353                 DEBUG(2,("parse_usershare_file: share %s : stat failed on path %s. %s\n",
3354                         servicename, sharepath, strerror(errno) ));
3355                 closedir(dp);
3356                 return USERSHARE_POSIX_ERR;
3357         }
3358
3359         closedir(dp);
3360
3361         if (!S_ISDIR(sbuf.st_ex_mode)) {
3362                 DEBUG(2,("parse_usershare_file: share %s path %s is not a directory.\n",
3363                         servicename, sharepath ));
3364                 return USERSHARE_PATH_NOT_DIRECTORY;
3365         }
3366
3367         /* Check if sharing is restricted to owner-only. */
3368         /* psbuf is the stat of the usershare definition file,
3369            sbuf is the stat of the target directory to be shared. */
3370
3371         if (lp_usershare_owner_only()) {
3372                 /* root can share anything. */
3373                 if ((psbuf->st_ex_uid != 0) && (sbuf.st_ex_uid != psbuf->st_ex_uid)) {
3374                         return USERSHARE_PATH_NOT_ALLOWED;
3375                 }
3376         }
3377
3378         *pp_sharepath = sharepath;
3379         *pp_comment = comment;
3380         return USERSHARE_OK;
3381 }
3382
3383 /***************************************************************************
3384  Deal with a usershare file.
3385  Returns:
3386         >= 0 - snum
3387         -1 - Bad name, invalid contents.
3388            - service name already existed and not a usershare, problem
3389             with permissions to share directory etc.
3390 ***************************************************************************/
3391
3392 static int process_usershare_file(const char *dir_name, const char *file_name, int snum_template)
3393 {
3394         SMB_STRUCT_STAT sbuf;
3395         SMB_STRUCT_STAT lsbuf;
3396         char *fname = NULL;
3397         char *sharepath = NULL;
3398         char *comment = NULL;
3399         char *cp_service_name = NULL;
3400         char **lines = NULL;
3401         int numlines = 0;
3402         int fd = -1;
3403         int iService = -1;
3404         TALLOC_CTX *ctx = talloc_stackframe();
3405         struct security_descriptor *psd = NULL;
3406         bool guest_ok = false;
3407         char *canon_name = NULL;
3408         bool added_service = false;
3409         int ret = -1;
3410
3411         /* Ensure share name doesn't contain invalid characters. */
3412         if (!validate_net_name(file_name, INVALID_SHARENAME_CHARS, strlen(file_name))) {
3413                 DEBUG(0,("process_usershare_file: share name %s contains "
3414                         "invalid characters (any of %s)\n",
3415                         file_name, INVALID_SHARENAME_CHARS ));
3416                 goto out;
3417         }
3418
3419         canon_name = canonicalize_servicename(ctx, file_name);
3420         if (!canon_name) {
3421                 goto out;
3422         }
3423
3424         fname = talloc_asprintf(ctx, "%s/%s", dir_name, file_name);
3425         if (!fname) {
3426                 goto out;
3427         }
3428
3429         /* Minimize the race condition by doing an lstat before we
3430            open and fstat. Ensure this isn't a symlink link. */
3431
3432         if (sys_lstat(fname, &lsbuf, false) != 0) {
3433                 DEBUG(0,("process_usershare_file: stat of %s failed. %s\n",
3434                         fname, strerror(errno) ));
3435                 goto out;
3436         }
3437
3438         /* This must be a regular file, not a symlink, directory or
3439            other strange filetype. */
3440         if (!check_usershare_stat(fname, &lsbuf)) {
3441                 goto out;
3442         }
3443
3444         {
3445                 TDB_DATA data;
3446                 NTSTATUS status;
3447
3448                 status = dbwrap_fetch_bystring(ServiceHash, canon_name,
3449                                                canon_name, &data);
3450
3451                 iService = -1;
3452
3453                 if (NT_STATUS_IS_OK(status) &&
3454                     (data.dptr != NULL) &&
3455                     (data.dsize == sizeof(iService))) {
3456                         memcpy(&iService, data.dptr, sizeof(iService));
3457                 }
3458         }
3459
3460         if (iService != -1 &&
3461             timespec_compare(&ServicePtrs[iService]->usershare_last_mod,
3462                              &lsbuf.st_ex_mtime) == 0) {
3463                 /* Nothing changed - Mark valid and return. */
3464                 DEBUG(10,("process_usershare_file: service %s not changed.\n",
3465                         canon_name ));
3466                 ServicePtrs[iService]->usershare = USERSHARE_VALID;
3467                 ret = iService;
3468                 goto out;
3469         }
3470
3471         /* Try and open the file read only - no symlinks allowed. */
3472 #ifdef O_NOFOLLOW
3473         fd = open(fname, O_RDONLY|O_NOFOLLOW, 0);
3474 #else
3475         fd = open(fname, O_RDONLY, 0);
3476 #endif
3477
3478         if (fd == -1) {
3479                 DEBUG(0,("process_usershare_file: unable to open %s. %s\n",
3480                         fname, strerror(errno) ));
3481                 goto out;
3482         }
3483
3484         /* Now fstat to be *SURE* it's a regular file. */
3485         if (sys_fstat(fd, &sbuf, false) != 0) {
3486                 close(fd);
3487                 DEBUG(0,("process_usershare_file: fstat of %s failed. %s\n",
3488                         fname, strerror(errno) ));
3489                 goto out;
3490         }
3491
3492         /* Is it the same dev/inode as was lstated ? */
3493         if (!check_same_stat(&lsbuf, &sbuf)) {
3494                 close(fd);
3495                 DEBUG(0,("process_usershare_file: fstat of %s is a different file from lstat. "
3496                         "Symlink spoofing going on ?\n", fname ));
3497                 goto out;
3498         }
3499
3500         /* This must be a regular file, not a symlink, directory or
3501            other strange filetype. */
3502         if (!check_usershare_stat(fname, &sbuf)) {
3503                 close(fd);
3504                 goto out;
3505         }
3506
3507         lines = fd_lines_load(fd, &numlines, MAX_USERSHARE_FILE_SIZE, NULL);
3508
3509         close(fd);
3510         if (lines == NULL) {
3511                 DEBUG(0,("process_usershare_file: loading file %s owned by %u failed.\n",
3512                         fname, (unsigned int)sbuf.st_ex_uid ));
3513                 goto out;
3514         }
3515
3516         if (parse_usershare_file(ctx, &sbuf, file_name,
3517                         iService, lines, numlines, &sharepath,
3518                         &comment, &cp_service_name,
3519                         &psd, &guest_ok) != USERSHARE_OK) {
3520                 goto out;
3521         }
3522
3523         /* Everything ok - add the service possibly using a template. */
3524         if (iService < 0) {
3525                 const struct loadparm_service *sp = &sDefault;
3526                 if (snum_template != -1) {
3527                         sp = ServicePtrs[snum_template];
3528                 }
3529
3530                 if ((iService = add_a_service(sp, cp_service_name)) < 0) {
3531                         DEBUG(0, ("process_usershare_file: Failed to add "
3532                                 "new service %s\n", cp_service_name));
3533                         goto out;
3534                 }
3535
3536                 added_service = true;
3537
3538                 /* Read only is controlled by usershare ACL below. */
3539                 ServicePtrs[iService]->read_only = false;
3540         }
3541
3542         /* Write the ACL of the new/modified share. */
3543         if (!set_share_security(canon_name, psd)) {
3544                  DEBUG(0, ("process_usershare_file: Failed to set share "
3545                         "security for user share %s\n",
3546                         canon_name ));
3547                 goto out;
3548         }
3549
3550         /* If from a template it may be marked invalid. */
3551         ServicePtrs[iService]->valid = true;
3552
3553         /* Set the service as a valid usershare. */
3554         ServicePtrs[iService]->usershare = USERSHARE_VALID;
3555
3556         /* Set guest access. */
3557         if (lp_usershare_allow_guests()) {
3558                 ServicePtrs[iService]->guest_ok = guest_ok;
3559         }
3560
3561         /* And note when it was loaded. */
3562         ServicePtrs[iService]->usershare_last_mod = sbuf.st_ex_mtime;
3563         string_set(ServicePtrs[iService], &ServicePtrs[iService]->path, sharepath);
3564         string_set(ServicePtrs[iService], &ServicePtrs[iService]->comment, comment);
3565
3566         ret = iService;
3567
3568   out:
3569
3570         if (ret == -1 && iService != -1 && added_service) {
3571                 lp_remove_service(iService);
3572         }
3573
3574         TALLOC_FREE(lines);
3575         TALLOC_FREE(ctx);
3576         return ret;
3577 }
3578
3579 /***************************************************************************
3580  Checks if a usershare entry has been modified since last load.
3581 ***************************************************************************/
3582
3583 static bool usershare_exists(int iService, struct timespec *last_mod)
3584 {
3585         SMB_STRUCT_STAT lsbuf;
3586         const char *usersharepath = Globals.usershare_path;
3587         char *fname;
3588
3589         fname = talloc_asprintf(talloc_tos(),
3590                                 "%s/%s",
3591                                 usersharepath,
3592                                 ServicePtrs[iService]->szService);
3593         if (fname == NULL) {
3594                 return false;
3595         }
3596
3597         if (sys_lstat(fname, &lsbuf, false) != 0) {
3598                 TALLOC_FREE(fname);
3599                 return false;
3600         }
3601
3602         if (!S_ISREG(lsbuf.st_ex_mode)) {
3603                 TALLOC_FREE(fname);
3604                 return false;
3605         }
3606
3607         TALLOC_FREE(fname);
3608         *last_mod = lsbuf.st_ex_mtime;
3609         return true;
3610 }
3611
3612 /***************************************************************************
3613  Load a usershare service by name. Returns a valid servicenumber or -1.
3614 ***************************************************************************/
3615
3616 int load_usershare_service(const char *servicename)
3617 {
3618         SMB_STRUCT_STAT sbuf;
3619         const char *usersharepath = Globals.usershare_path;
3620         int max_user_shares = Globals.usershare_max_shares;
3621         int snum_template = -1;
3622
3623         if (*usersharepath == 0 ||  max_user_shares == 0) {
3624                 return -1;
3625         }
3626
3627         if (sys_stat(usersharepath, &sbuf, false) != 0) {
3628                 DEBUG(0,("load_usershare_service: stat of %s failed. %s\n",
3629                         usersharepath, strerror(errno) ));
3630                 return -1;
3631         }
3632
3633         if (!S_ISDIR(sbuf.st_ex_mode)) {
3634                 DEBUG(0,("load_usershare_service: %s is not a directory.\n",
3635                         usersharepath ));
3636                 return -1;
3637         }
3638
3639         /*
3640          * This directory must be owned by root, and have the 't' bit set.
3641          * It also must not be writable by "other".
3642          */
3643
3644 #ifdef S_ISVTX
3645         if (sbuf.st_ex_uid != 0 || !(sbuf.st_ex_mode & S_ISVTX) || (sbuf.st_ex_mode & S_IWOTH)) {
3646 #else
3647         if (sbuf.st_ex_uid != 0 || (sbuf.st_ex_mode & S_IWOTH)) {
3648 #endif
3649                 DEBUG(0,("load_usershare_service: directory %s is not owned by root "
3650                         "or does not have the sticky bit 't' set or is writable by anyone.\n",
3651                         usersharepath ));
3652                 return -1;
3653         }
3654
3655         /* Ensure the template share exists if it's set. */
3656         if (Globals.usershare_template_share[0]) {
3657                 /* We can't use lp_servicenumber here as we are recommending that
3658                    template shares have -valid=false set. */
3659                 for (snum_template = iNumServices - 1; snum_template >= 0; snum_template--) {
3660                         if (ServicePtrs[snum_template]->szService &&
3661                                         strequal(ServicePtrs[snum_template]->szService,
3662                                                 Globals.usershare_template_share)) {
3663                                 break;
3664                         }
3665                 }
3666
3667                 if (snum_template == -1) {
3668                         DEBUG(0,("load_usershare_service: usershare template share %s "
3669                                 "does not exist.\n",
3670                                 Globals.usershare_template_share ));
3671                         return -1;
3672                 }
3673         }
3674
3675         return process_usershare_file(usersharepath, servicename, snum_template);
3676 }
3677
3678 /***************************************************************************
3679  Load all user defined shares from the user share directory.
3680  We only do this if we're enumerating the share list.
3681  This is the function that can delete usershares that have
3682  been removed.
3683 ***************************************************************************/
3684
3685 int load_usershare_shares(struct smbd_server_connection *sconn,
3686                           bool (*snumused) (struct smbd_server_connection *, int))
3687 {
3688         DIR *dp;
3689         SMB_STRUCT_STAT sbuf;
3690         struct dirent *de;
3691         int num_usershares = 0;
3692         int max_user_shares = Globals.usershare_max_shares;
3693         unsigned int num_dir_entries, num_bad_dir_entries, num_tmp_dir_entries;
3694         unsigned int allowed_bad_entries = ((2*max_user_shares)/10);
3695         unsigned int allowed_tmp_entries = ((2*max_user_shares)/10);
3696         int iService;
3697         int snum_template = -1;
3698         const char *usersharepath = Globals.usershare_path;
3699         int ret = lp_numservices();
3700         TALLOC_CTX *tmp_ctx;
3701
3702         if (max_user_shares == 0 || *usersharepath == '\0') {
3703                 return lp_numservices();
3704         }
3705
3706         if (sys_stat(usersharepath, &sbuf, false) != 0) {
3707                 DEBUG(0,("load_usershare_shares: stat of %s failed. %s\n",
3708                         usersharepath, strerror(errno) ));
3709                 return ret;
3710         }
3711
3712         /*
3713          * This directory must be owned by root, and have the 't' bit set.
3714          * It also must not be writable by "other".
3715          */
3716
3717 #ifdef S_ISVTX
3718         if (sbuf.st_ex_uid != 0 || !(sbuf.st_ex_mode & S_ISVTX) || (sbuf.st_ex_mode & S_IWOTH)) {
3719 #else
3720         if (sbuf.st_ex_uid != 0 || (sbuf.st_ex_mode & S_IWOTH)) {
3721 #endif
3722                 DEBUG(0,("load_usershare_shares: directory %s is not owned by root "
3723                         "or does not have the sticky bit 't' set or is writable by anyone.\n",
3724                         usersharepath ));
3725                 return ret;
3726         }
3727
3728         /* Ensure the template share exists if it's set. */
3729         if (Globals.usershare_template_share[0]) {
3730                 /* We can't use lp_servicenumber here as we are recommending that
3731                    template shares have -valid=false set. */
3732                 for (snum_template = iNumServices - 1; snum_template >= 0; snum_template--) {
3733                         if (ServicePtrs[snum_template]->szService &&
3734                                         strequal(ServicePtrs[snum_template]->szService,
3735                                                 Globals.usershare_template_share)) {
3736                                 break;
3737                         }
3738                 }
3739
3740                 if (snum_template == -1) {
3741                         DEBUG(0,("load_usershare_shares: usershare template share %s "
3742                                 "does not exist.\n",
3743                                 Globals.usershare_template_share ));
3744                         return ret;
3745                 }
3746         }
3747
3748         /* Mark all existing usershares as pending delete. */
3749         for (iService = iNumServices - 1; iService >= 0; iService--) {
3750                 if (VALID(iService) && ServicePtrs[iService]->usershare) {
3751                         ServicePtrs[iService]->usershare = USERSHARE_PENDING_DELETE;
3752                 }
3753         }
3754
3755         dp = opendir(usersharepath);
3756         if (!dp) {
3757                 DEBUG(0,("load_usershare_shares:: failed to open directory %s. %s\n",
3758                         usersharepath, strerror(errno) ));
3759                 return ret;
3760         }
3761
3762         for (num_dir_entries = 0, num_bad_dir_entries = 0, num_tmp_dir_entries = 0;
3763                         (de = readdir(dp));
3764                         num_dir_entries++ ) {
3765                 int r;
3766                 const char *n = de->d_name;
3767
3768                 /* Ignore . and .. */
3769                 if (*n == '.') {
3770                         if ((n[1] == '\0') || (n[1] == '.' && n[2] == '\0')) {
3771                                 continue;
3772                         }
3773                 }
3774
3775                 if (n[0] == ':') {
3776                         /* Temporary file used when creating a share. */
3777                         num_tmp_dir_entries++;
3778                 }
3779
3780                 /* Allow 20% tmp entries. */
3781                 if (num_tmp_dir_entries > allowed_tmp_entries) {
3782                         DEBUG(0,("load_usershare_shares: too many temp entries (%u) "
3783                                 "in directory %s\n",
3784                                 num_tmp_dir_entries, usersharepath));
3785                         break;
3786                 }
3787
3788                 r = process_usershare_file(usersharepath, n, snum_template);
3789                 if (r == 0) {
3790                         /* Update the services count. */
3791                         num_usershares++;
3792                         if (num_usershares >= max_user_shares) {
3793                                 DEBUG(0,("load_usershare_shares: max user shares reached "
3794                                         "on file %s in directory %s\n",
3795                                         n, usersharepath ));
3796                                 break;
3797                         }
3798                 } else if (r == -1) {
3799                         num_bad_dir_entries++;
3800                 }
3801
3802                 /* Allow 20% bad entries. */
3803                 if (num_bad_dir_entries > allowed_bad_entries) {
3804                         DEBUG(0,("load_usershare_shares: too many bad entries (%u) "
3805                                 "in directory %s\n",
3806                                 num_bad_dir_entries, usersharepath));
3807                         break;
3808                 }
3809
3810                 /* Allow 20% bad entries. */
3811                 if (num_dir_entries > max_user_shares + allowed_bad_entries) {
3812                         DEBUG(0,("load_usershare_shares: too many total entries (%u) "
3813                         "in directory %s\n",
3814                         num_dir_entries, usersharepath));
3815                         break;
3816                 }
3817         }
3818
3819         closedir(dp);
3820
3821         /* Sweep through and delete any non-refreshed usershares that are
3822            not currently in use. */
3823         tmp_ctx = talloc_stackframe();
3824         for (iService = iNumServices - 1; iService >= 0; iService--) {
3825                 if (VALID(iService) && (ServicePtrs[iService]->usershare == USERSHARE_PENDING_DELETE)) {
3826                         char *servname;
3827
3828                         if (snumused && snumused(sconn, iService)) {
3829                                 continue;
3830                         }
3831
3832                         servname = lp_servicename(tmp_ctx, iService);
3833
3834                         /* Remove from the share ACL db. */
3835                         DEBUG(10,("load_usershare_shares: Removing deleted usershare %s\n",
3836                                   servname ));
3837                         delete_share_security(servname);
3838                         free_service_byindex(iService);
3839                 }
3840         }
3841         talloc_free(tmp_ctx);
3842
3843         return lp_numservices();
3844 }
3845
3846 /********************************************************
3847  Destroy global resources allocated in this file
3848 ********************************************************/
3849
3850 void gfree_loadparm(void)
3851 {
3852         int i;
3853
3854         free_file_list();
3855
3856         /* Free resources allocated to services */
3857
3858         for ( i = 0; i < iNumServices; i++ ) {
3859                 if ( VALID(i) ) {
3860                         free_service_byindex(i);
3861                 }
3862         }
3863
3864         TALLOC_FREE( ServicePtrs );
3865         iNumServices = 0;
3866
3867         /* Now release all resources allocated to global
3868            parameters and the default service */
3869
3870         free_global_parameters();
3871 }
3872
3873
3874 /***************************************************************************
3875  Allow client apps to specify that they are a client
3876 ***************************************************************************/
3877 static void lp_set_in_client(bool b)
3878 {
3879     in_client = b;
3880 }
3881
3882
3883 /***************************************************************************
3884  Determine if we're running in a client app
3885 ***************************************************************************/
3886 static bool lp_is_in_client(void)
3887 {
3888     return in_client;
3889 }
3890
3891 /***************************************************************************
3892  Load the services array from the services file. Return true on success,
3893  false on failure.
3894 ***************************************************************************/
3895
3896 static bool lp_load_ex(const char *pszFname,
3897                        bool global_only,
3898                        bool save_defaults,
3899                        bool add_ipc,
3900                        bool initialize_globals,
3901                        bool allow_include_registry,
3902                        bool load_all_shares)
3903 {
3904         char *n2 = NULL;
3905         bool bRetval;
3906         TALLOC_CTX *frame = talloc_stackframe();
3907
3908         bRetval = false;
3909
3910         DEBUG(3, ("lp_load_ex: refreshing parameters\n"));
3911
3912         bInGlobalSection = true;
3913         bGlobalOnly = global_only;
3914         bAllowIncludeRegistry = allow_include_registry;
3915
3916         init_globals(initialize_globals);
3917
3918         free_file_list();
3919
3920         if (save_defaults) {
3921                 init_locals();
3922                 lp_save_defaults();
3923         }
3924
3925         if (!initialize_globals) {
3926                 free_param_opts(&Globals.param_opt);
3927                 apply_lp_set_cmdline();
3928         }
3929
3930         lp_do_parameter(-1, "idmap config * : backend", Globals.szIdmapBackend);
3931
3932         /* We get sections first, so have to start 'behind' to make up */
3933         iServiceIndex = -1;
3934
3935         if (lp_config_backend_is_file()) {
3936                 n2 = talloc_sub_basic(talloc_tos(), get_current_username(),
3937                                         current_user_info.domain,
3938                                         pszFname);
3939                 if (!n2) {
3940                         smb_panic("lp_load_ex: out of memory");
3941                 }
3942
3943                 add_to_file_list(NULL, &file_lists, pszFname, n2);
3944
3945                 bRetval = pm_process(n2, do_section, do_parameter, NULL);
3946                 TALLOC_FREE(n2);
3947
3948                 /* finish up the last section */
3949                 DEBUG(4, ("pm_process() returned %s\n", BOOLSTR(bRetval)));
3950                 if (bRetval) {
3951                         if (iServiceIndex >= 0) {
3952                                 bRetval = service_ok(iServiceIndex);
3953                         }
3954                 }
3955
3956                 if (lp_config_backend_is_registry()) {
3957                         bool ok;
3958                         /* config backend changed to registry in config file */
3959                         /*
3960                          * We need to use this extra global variable here to
3961                          * survive restart: init_globals uses this as a default
3962                          * for config_backend. Otherwise, init_globals would
3963                          *  send us into an endless loop here.
3964                          */
3965                         config_backend = CONFIG_BACKEND_REGISTRY;
3966                         /* start over */
3967                         DEBUG(1, ("lp_load_ex: changing to config backend "
3968                                   "registry\n"));
3969                         init_globals(true);
3970                         lp_kill_all_services();
3971                         ok = lp_load_ex(pszFname, global_only, save_defaults,
3972                                         add_ipc, initialize_globals,
3973                                         allow_include_registry,
3974                                         load_all_shares);
3975                         TALLOC_FREE(frame);
3976                         return ok;
3977                 }
3978         } else if (lp_config_backend_is_registry()) {
3979                 bRetval = process_registry_globals();
3980         } else {
3981                 DEBUG(0, ("Illegal config  backend given: %d\n",
3982                           lp_config_backend()));
3983                 bRetval = false;
3984         }
3985
3986         if (bRetval && lp_registry_shares()) {
3987                 if (load_all_shares) {
3988                         bRetval = process_registry_shares();
3989                 } else {
3990                         bRetval = reload_registry_shares();
3991                 }
3992         }
3993
3994         {
3995                 char *serv = lp_auto_services(talloc_tos());
3996                 lp_add_auto_services(serv);
3997                 TALLOC_FREE(serv);
3998         }
3999
4000         if (add_ipc) {
4001                 /* When 'restrict anonymous = 2' guest connections to ipc$
4002                    are denied */
4003                 lp_add_ipc("IPC$", (lp_restrict_anonymous() < 2));
4004                 if ( lp_enable_asu_support() ) {
4005                         lp_add_ipc("ADMIN$", false);
4006                 }
4007         }
4008
4009         set_allowed_client_auth();
4010
4011         if (lp_security() == SEC_ADS && strchr(lp_password_server(), ':')) {
4012                 DEBUG(1, ("WARNING: The optional ':port' in password server = %s is deprecated\n",
4013                           lp_password_server()));
4014         }
4015
4016         bLoaded = true;
4017
4018         /* Now we check we_are_a_wins_server and set szWINSserver to 127.0.0.1 */
4019         /* if we_are_a_wins_server is true and we are in the client            */
4020         if (lp_is_in_client() && Globals.we_are_a_wins_server) {
4021                 lp_do_parameter(GLOBAL_SECTION_SNUM, "wins server", "127.0.0.1");
4022         }
4023
4024         init_iconv();
4025
4026         fault_configure(smb_panic_s3);
4027
4028         /*
4029          * We run this check once the whole smb.conf is parsed, to
4030          * force some settings for the standard way a AD DC is
4031          * operated.  We may changed these as our code evolves, which
4032          * is why we force these settings.
4033          */
4034         if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC) {
4035                 lp_do_parameter(-1, "passdb backend", "samba_dsdb");
4036
4037                 lp_do_parameter(-1, "winbindd:use external pipes", "true");
4038
4039                 lp_do_parameter(-1, "rpc_server:default", "external");
4040                 lp_do_parameter(-1, "rpc_server:svcctl", "embedded");
4041                 lp_do_parameter(-1, "rpc_server:srvsvc", "embedded");
4042                 lp_do_parameter(-1, "rpc_server:eventlog", "embedded");
4043                 lp_do_parameter(-1, "rpc_server:ntsvcs", "embedded");
4044                 lp_do_parameter(-1, "rpc_server:winreg", "embedded");
4045                 lp_do_parameter(-1, "rpc_server:spoolss", "embedded");
4046                 lp_do_parameter(-1, "rpc_daemon:spoolssd", "embedded");
4047                 lp_do_parameter(-1, "rpc_server:tcpip", "no");
4048         }
4049
4050         bAllowIncludeRegistry = true;
4051
4052         TALLOC_FREE(frame);
4053         return (bRetval);
4054 }
4055
4056 bool lp_load(const char *pszFname,
4057              bool global_only,
4058              bool save_defaults,
4059              bool add_ipc,
4060              bool initialize_globals)
4061 {
4062         return lp_load_ex(pszFname,
4063                           global_only,
4064                           save_defaults,
4065                           add_ipc,
4066                           initialize_globals,
4067                           true,   /* allow_include_registry */
4068                           false); /* load_all_shares*/
4069 }
4070
4071 bool lp_load_initial_only(const char *pszFname)
4072 {
4073         return lp_load_ex(pszFname,
4074                           true,   /* global only */
4075                           false,  /* save_defaults */
4076                           false,  /* add_ipc */
4077                           true,   /* initialize_globals */
4078                           false,  /* allow_include_registry */
4079                           false); /* load_all_shares*/
4080 }
4081
4082 /**
4083  * most common lp_load wrapper, loading only the globals
4084  */
4085 bool lp_load_global(const char *file_name)
4086 {
4087         return lp_load_ex(file_name,
4088                           true,   /* global_only */
4089                           false,  /* save_defaults */
4090                           false,  /* add_ipc */
4091                           true,   /* initialize_globals */
4092                           true,   /* allow_include_registry */
4093                           false); /* load_all_shares*/
4094 }
4095
4096 /**
4097  * lp_load wrapper, especially for clients
4098  */
4099 bool lp_load_client(const char *file_name)
4100 {
4101         lp_set_in_client(true);
4102
4103         return lp_load_global(file_name);
4104 }
4105
4106 /**
4107  * lp_load wrapper, loading only globals, but intended
4108  * for subsequent calls, not reinitializing the globals
4109  * to default values
4110  */
4111 bool lp_load_global_no_reinit(const char *file_name)
4112 {
4113         return lp_load_ex(file_name,
4114                           true,   /* global_only */
4115                           false,  /* save_defaults */
4116                           false,  /* add_ipc */
4117                           false,  /* initialize_globals */
4118                           true,   /* allow_include_registry */
4119                           false); /* load_all_shares*/
4120 }
4121
4122 /**
4123  * lp_load wrapper, especially for clients, no reinitialization
4124  */
4125 bool lp_load_client_no_reinit(const char *file_name)
4126 {
4127         lp_set_in_client(true);
4128
4129         return lp_load_global_no_reinit(file_name);
4130 }
4131
4132 bool lp_load_with_registry_shares(const char *pszFname,
4133                                   bool global_only,
4134                                   bool save_defaults,
4135                                   bool add_ipc,
4136                                   bool initialize_globals)
4137 {
4138         return lp_load_ex(pszFname,
4139                           global_only,
4140                           save_defaults,
4141                           add_ipc,
4142                           initialize_globals,
4143                           true,  /* allow_include_registry */
4144                           true); /* load_all_shares*/
4145 }
4146
4147 /***************************************************************************
4148  Return the max number of services.
4149 ***************************************************************************/
4150
4151 int lp_numservices(void)
4152 {
4153         return (iNumServices);
4154 }
4155
4156 /***************************************************************************
4157 Display the contents of the services array in human-readable form.
4158 ***************************************************************************/
4159
4160 void lp_dump(FILE *f, bool show_defaults, int maxtoprint)
4161 {
4162         int iService;
4163
4164         if (show_defaults)
4165                 defaults_saved = false;
4166
4167         dump_globals(f, defaults_saved);
4168
4169         dump_a_service(&sDefault, f, show_defaults);
4170
4171         for (iService = 0; iService < maxtoprint; iService++) {
4172                 fprintf(f,"\n");
4173                 lp_dump_one(f, show_defaults, iService);
4174         }
4175 }
4176
4177 /***************************************************************************
4178 Display the contents of one service in human-readable form.
4179 ***************************************************************************/
4180
4181 void lp_dump_one(FILE * f, bool show_defaults, int snum)
4182 {
4183         if (VALID(snum)) {
4184                 if (ServicePtrs[snum]->szService[0] == '\0')
4185                         return;
4186                 dump_a_service(ServicePtrs[snum], f, show_defaults);
4187         }
4188 }
4189
4190 /***************************************************************************
4191 Return the number of the service with the given name, or -1 if it doesn't
4192 exist. Note that this is a DIFFERENT ANIMAL from the internal function
4193 getservicebyname()! This works ONLY if all services have been loaded, and
4194 does not copy the found service.
4195 ***************************************************************************/
4196
4197 int lp_servicenumber(const char *pszServiceName)
4198 {
4199         int iService;
4200         fstring serviceName;
4201
4202         if (!pszServiceName) {
4203                 return GLOBAL_SECTION_SNUM;
4204         }
4205
4206         for (iService = iNumServices - 1; iService >= 0; iService--) {
4207                 if (VALID(iService) && ServicePtrs[iService]->szService) {
4208                         /*
4209                          * The substitution here is used to support %U is
4210                          * service names
4211                          */
4212                         fstrcpy(serviceName, ServicePtrs[iService]->szService);
4213                         standard_sub_basic(get_current_username(),
4214                                            current_user_info.domain,
4215                                            serviceName,sizeof(serviceName));
4216                         if (strequal(serviceName, pszServiceName)) {
4217                                 break;
4218                         }
4219                 }
4220         }
4221
4222         if (iService >= 0 && ServicePtrs[iService]->usershare == USERSHARE_VALID) {
4223                 struct timespec last_mod;
4224
4225                 if (!usershare_exists(iService, &last_mod)) {
4226                         /* Remove the share security tdb entry for it. */
4227                         delete_share_security(lp_servicename(talloc_tos(), iService));
4228                         /* Remove it from the array. */
4229                         free_service_byindex(iService);
4230                         /* Doesn't exist anymore. */
4231                         return GLOBAL_SECTION_SNUM;
4232                 }
4233
4234                 /* Has it been modified ? If so delete and reload. */
4235                 if (timespec_compare(&ServicePtrs[iService]->usershare_last_mod,
4236                                      &last_mod) < 0) {
4237                         /* Remove it from the array. */
4238                         free_service_byindex(iService);
4239                         /* and now reload it. */
4240                         iService = load_usershare_service(pszServiceName);
4241                 }
4242         }
4243
4244         if (iService < 0) {
4245                 DEBUG(7,("lp_servicenumber: couldn't find %s\n", pszServiceName));
4246                 return GLOBAL_SECTION_SNUM;
4247         }
4248
4249         return (iService);
4250 }
4251
4252 /*******************************************************************
4253  A useful volume label function.
4254 ********************************************************************/
4255
4256 const char *volume_label(TALLOC_CTX *ctx, int snum)
4257 {
4258         char *ret;
4259         const char *label = lp_volume(ctx, snum);
4260         if (!*label) {
4261                 label = lp_servicename(ctx, snum);
4262         }
4263
4264         /* This returns a 33 byte guarenteed null terminated string. */
4265         ret = talloc_strndup(ctx, label, 32);
4266         if (!ret) {
4267                 return "";
4268         }
4269         return ret;
4270 }
4271
4272 /*******************************************************************
4273  Get the default server type we will announce as via nmbd.
4274 ********************************************************************/
4275
4276 int lp_default_server_announce(void)
4277 {
4278         int default_server_announce = 0;
4279         default_server_announce |= SV_TYPE_WORKSTATION;
4280         default_server_announce |= SV_TYPE_SERVER;
4281         default_server_announce |= SV_TYPE_SERVER_UNIX;
4282
4283         /* note that the flag should be set only if we have a
4284            printer service but nmbd doesn't actually load the
4285            services so we can't tell   --jerry */
4286
4287         default_server_announce |= SV_TYPE_PRINTQ_SERVER;
4288
4289         default_server_announce |= SV_TYPE_SERVER_NT;
4290         default_server_announce |= SV_TYPE_NT;
4291
4292         switch (lp_server_role()) {
4293                 case ROLE_DOMAIN_MEMBER:
4294                         default_server_announce |= SV_TYPE_DOMAIN_MEMBER;
4295                         break;
4296                 case ROLE_DOMAIN_PDC:
4297                         default_server_announce |= SV_TYPE_DOMAIN_CTRL;
4298                         break;
4299                 case ROLE_DOMAIN_BDC:
4300                         default_server_announce |= SV_TYPE_DOMAIN_BAKCTRL;
4301                         break;
4302                 case ROLE_STANDALONE:
4303                 default:
4304                         break;
4305         }
4306         if (lp_time_server())
4307                 default_server_announce |= SV_TYPE_TIME_SOURCE;
4308
4309         if (lp_host_msdfs())
4310                 default_server_announce |= SV_TYPE_DFS_SERVER;
4311
4312         return default_server_announce;
4313 }
4314
4315 /***********************************************************
4316  If we are PDC then prefer us as DMB
4317 ************************************************************/
4318
4319 bool lp_domain_master(void)
4320 {
4321         if (Globals._domain_master == Auto)
4322                 return (lp_server_role() == ROLE_DOMAIN_PDC);
4323
4324         return (bool)Globals._domain_master;
4325 }
4326
4327 /***********************************************************
4328  If we are PDC then prefer us as DMB
4329 ************************************************************/
4330
4331 static bool lp_domain_master_true_or_auto(void)
4332 {
4333         if (Globals._domain_master) /* auto or yes */
4334                 return true;
4335
4336         return false;
4337 }
4338
4339 /***********************************************************
4340  If we are DMB then prefer us as LMB
4341 ************************************************************/
4342
4343 bool lp_preferred_master(void)
4344 {
4345         if (Globals.iPreferredMaster == Auto)
4346                 return (lp_local_master() && lp_domain_master());
4347
4348         return (bool)Globals.iPreferredMaster;
4349 }
4350
4351 /*******************************************************************
4352  Remove a service.
4353 ********************************************************************/
4354
4355 void lp_remove_service(int snum)
4356 {
4357         ServicePtrs[snum]->valid = false;
4358 }
4359
4360 const char *lp_printername(TALLOC_CTX *ctx, int snum)
4361 {
4362         const char *ret = lp__printername(ctx, snum);
4363         if (ret == NULL || *ret == '\0') {
4364                 ret = lp_const_servicename(snum);
4365         }
4366
4367         return ret;
4368 }
4369
4370
4371 /***********************************************************
4372  Allow daemons such as winbindd to fix their logfile name.
4373 ************************************************************/
4374
4375 void lp_set_logfile(const char *name)
4376 {
4377         string_set(Globals.ctx, &Globals.logfile, name);
4378         debug_set_logfile(name);
4379 }
4380
4381 /*******************************************************************
4382  Return the max print jobs per queue.
4383 ********************************************************************/
4384
4385 int lp_maxprintjobs(int snum)
4386 {
4387         int maxjobs = LP_SNUM_OK(snum) ? ServicePtrs[snum]->iMaxPrintJobs : sDefault.iMaxPrintJobs;
4388         if (maxjobs <= 0 || maxjobs >= PRINT_MAX_JOBID)
4389                 maxjobs = PRINT_MAX_JOBID - 1;
4390
4391         return maxjobs;
4392 }
4393
4394 const char *lp_printcapname(void)
4395 {
4396         if ((Globals.szPrintcapname != NULL) &&
4397             (Globals.szPrintcapname[0] != '\0'))
4398                 return Globals.szPrintcapname;
4399
4400         if (sDefault.printing == PRINT_CUPS) {
4401                 return "cups";
4402         }
4403
4404         if (sDefault.printing == PRINT_BSD)
4405                 return "/etc/printcap";
4406
4407         return PRINTCAP_NAME;
4408 }
4409
4410 static uint32 spoolss_state;
4411
4412 bool lp_disable_spoolss( void )
4413 {
4414         if ( spoolss_state == SVCCTL_STATE_UNKNOWN )
4415                 spoolss_state = lp__disable_spoolss() ? SVCCTL_STOPPED : SVCCTL_RUNNING;
4416
4417         return spoolss_state == SVCCTL_STOPPED ? true : false;
4418 }
4419
4420 void lp_set_spoolss_state( uint32 state )
4421 {
4422         SMB_ASSERT( (state == SVCCTL_STOPPED) || (state == SVCCTL_RUNNING) );
4423
4424         spoolss_state = state;
4425 }
4426
4427 uint32 lp_get_spoolss_state( void )
4428 {
4429         return lp_disable_spoolss() ? SVCCTL_STOPPED : SVCCTL_RUNNING;
4430 }
4431
4432 /*******************************************************************
4433  Ensure we don't use sendfile if server smb signing is active.
4434 ********************************************************************/
4435
4436 bool lp_use_sendfile(int snum, struct smb_signing_state *signing_state)
4437 {
4438         bool sign_active = false;
4439
4440         /* Using sendfile blows the brains out of any DOS or Win9x TCP stack... JRA. */
4441         if (get_Protocol() < PROTOCOL_NT1) {
4442                 return false;
4443         }
4444         if (signing_state) {
4445                 sign_active = smb_signing_is_active(signing_state);
4446         }
4447         return (lp__use_sendfile(snum) &&
4448                         (get_remote_arch() != RA_WIN95) &&
4449                         !sign_active);
4450 }
4451
4452 /*******************************************************************
4453  Turn off sendfile if we find the underlying OS doesn't support it.
4454 ********************************************************************/
4455
4456 void set_use_sendfile(int snum, bool val)
4457 {
4458         if (LP_SNUM_OK(snum))
4459                 ServicePtrs[snum]->_use_sendfile = val;
4460         else
4461                 sDefault._use_sendfile = val;
4462 }
4463
4464 /*******************************************************************
4465  Turn off storing DOS attributes if this share doesn't support it.
4466 ********************************************************************/
4467
4468 void set_store_dos_attributes(int snum, bool val)
4469 {
4470         if (!LP_SNUM_OK(snum))
4471                 return;
4472         ServicePtrs[(snum)]->store_dos_attributes = val;
4473 }
4474
4475 void lp_set_mangling_method(const char *new_method)
4476 {
4477         string_set(Globals.ctx, &Globals.mangling_method, new_method);
4478 }
4479
4480 /*******************************************************************
4481  Global state for POSIX pathname processing.
4482 ********************************************************************/
4483
4484 static bool posix_pathnames;
4485
4486 bool lp_posix_pathnames(void)
4487 {
4488         return posix_pathnames;
4489 }
4490
4491 /*******************************************************************
4492  Change everything needed to ensure POSIX pathname processing (currently
4493  not much).
4494 ********************************************************************/
4495
4496 void lp_set_posix_pathnames(void)
4497 {
4498         posix_pathnames = true;
4499 }
4500
4501 /*******************************************************************
4502  Global state for POSIX lock processing - CIFS unix extensions.
4503 ********************************************************************/
4504
4505 bool posix_default_lock_was_set;
4506 static enum brl_flavour posix_cifsx_locktype; /* By default 0 == WINDOWS_LOCK */
4507
4508 enum brl_flavour lp_posix_cifsu_locktype(files_struct *fsp)
4509 {
4510         if (posix_default_lock_was_set) {
4511                 return posix_cifsx_locktype;
4512         } else {
4513                 return fsp->posix_open ? POSIX_LOCK : WINDOWS_LOCK;
4514         }
4515 }
4516
4517 /*******************************************************************
4518 ********************************************************************/
4519
4520 void lp_set_posix_default_cifsx_readwrite_locktype(enum brl_flavour val)
4521 {
4522         posix_default_lock_was_set = true;
4523         posix_cifsx_locktype = val;
4524 }
4525
4526 int lp_min_receive_file_size(void)
4527 {
4528         if (Globals.iminreceivefile < 0) {
4529                 return 0;
4530         }
4531         return Globals.iminreceivefile;
4532 }
4533
4534 /*******************************************************************
4535  Safe wide links checks.
4536  This helper function always verify the validity of wide links,
4537  even after a configuration file reload.
4538 ********************************************************************/
4539
4540 static bool lp_widelinks_internal(int snum)
4541 {
4542         return (bool)(LP_SNUM_OK(snum)? ServicePtrs[(snum)]->bWidelinks :
4543                         sDefault.bWidelinks);
4544 }
4545
4546 void widelinks_warning(int snum)
4547 {
4548         if (lp_allow_insecure_wide_links()) {
4549                 return;
4550         }
4551
4552         if (lp_unix_extensions() && lp_widelinks_internal(snum)) {
4553                 DEBUG(0,("Share '%s' has wide links and unix extensions enabled. "
4554                         "These parameters are incompatible. "
4555                         "Wide links will be disabled for this share.\n",
4556                          lp_servicename(talloc_tos(), snum) ));
4557         }
4558 }
4559
4560 bool lp_widelinks(int snum)
4561 {
4562         /* wide links is always incompatible with unix extensions */
4563         if (lp_unix_extensions()) {
4564                 /*
4565                  * Unless we have "allow insecure widelinks"
4566                  * turned on.
4567                  */
4568                 if (!lp_allow_insecure_wide_links()) {
4569                         return false;
4570                 }
4571         }
4572
4573         return lp_widelinks_internal(snum);
4574 }
4575
4576 int lp_server_role(void)
4577 {
4578         return lp_find_server_role(lp__server_role(),
4579                                    lp__security(),
4580                                    lp__domain_logons(),
4581                                    lp_domain_master_true_or_auto());
4582 }
4583
4584 int lp_security(void)
4585 {
4586         return lp_find_security(lp__server_role(),
4587                                 lp__security());
4588 }
4589
4590 struct loadparm_global * get_globals(void)
4591 {
4592         return &Globals;
4593 }