libgpo/gpo_util.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Object Support
   4  *  Copyright (C) Guenther Deschner 2005-2008
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #define TALLOC_DEPRECATED 1
  20 #include "includes.h"
  21 #include "librpc/gen_ndr/ndr_misc.h"
  22 #include "../librpc/gen_ndr/ndr_security.h"
  23 #include "../libgpo/gpo.h"
  24 #if _SAMBA_BUILD_ == 4
  25 #include "system/filesys.h"
  26 #include "auth/auth.h"
  27 #include <talloc.h>
  28 #include "source4/libgpo/ads_convenience.h"
  29 #endif
  30 #undef strdup
  31
  32 #if 0
  33 #define DEFAULT_DOMAIN_POLICY "Default Domain Policy"
  34 #define DEFAULT_DOMAIN_CONTROLLERS_POLICY "Default Domain Controllers Policy"
  35 #endif
  36
  37 /* should we store a parsed guid ? */
  38 struct gp_table {
  39         const char *name;
  40         const char *guid_string;
  41 };
  42
  43 #if 0 /* unused */
  44 static struct gp_table gpo_default_policy[] = {
  45         { DEFAULT_DOMAIN_POLICY,
  46                 "31B2F340-016D-11D2-945F-00C04FB984F9" },
  47         { DEFAULT_DOMAIN_CONTROLLERS_POLICY,
  48                 "6AC1786C-016F-11D2-945F-00C04fB984F9" },
  49         { NULL, NULL }
  50 };
  51 #endif
  52
  53 /* the following is seen in gPCMachineExtensionNames / gPCUserExtensionNames */
  54
  55 static struct gp_table gpo_cse_extensions[] = {
  56         /* used to be "Administrative Templates Extension" */
  57         /* "Registry Settings"
  58         (http://support.microsoft.com/kb/216357/EN-US/) */
  59         { "Registry Settings",
  60                 GP_EXT_GUID_REGISTRY },
  61         { "Microsoft Disc Quota",
  62                 "3610EDA5-77EF-11D2-8DC5-00C04FA31A66" },
  63         { "EFS recovery",
  64                 "B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
  65         { "Folder Redirection",
  66                 "25537BA6-77A8-11D2-9B6C-0000F8080861" },
  67         { "IP Security",
  68                 "E437BC1C-AA7D-11D2-A382-00C04F991E27" },
  69         { "Internet Explorer Branding",
  70                 "A2E30F80-D7DE-11d2-BBDE-00C04F86AE3B" },
  71         { "QoS Packet Scheduler",
  72                 "426031c0-0b47-4852-b0ca-ac3d37bfcb39" },
  73         { "Scripts",
  74                 GP_EXT_GUID_SCRIPTS },
  75         { "Security",
  76                 GP_EXT_GUID_SECURITY },
  77         { "Software Installation",
  78                 "C6DC5466-785A-11D2-84D0-00C04FB169F7" },
  79         { "Wireless Group Policy",
  80                 "0ACDD40C-75AC-BAA0-BF6DE7E7FE63" },
  81         { "Application Management",
  82                 "C6DC5466-785A-11D2-84D0-00C04FB169F7" },
  83         { "unknown",
  84                 "3060E8D0-7020-11D2-842D-00C04FA372D4" },
  85         { NULL, NULL }
  86 };
  87
  88 /* guess work */
  89 static struct gp_table gpo_cse_snapin_extensions[] = {
  90         { "Administrative Templates",
  91                 "0F6B957D-509E-11D1-A7CC-0000F87571E3" },
  92         { "Certificates",
  93                 "53D6AB1D-2488-11D1-A28C-00C04FB94F17" },
  94         { "EFS recovery policy processing",
  95                 "B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
  96         { "Folder Redirection policy processing",
  97                 "25537BA6-77A8-11D2-9B6C-0000F8080861" },
  98         { "Folder Redirection",
  99                 "88E729D6-BDC1-11D1-BD2A-00C04FB9603F" },
 100         { "Registry policy processing",
 101                 "35378EAC-683F-11D2-A89A-00C04FBBCFA2" },
 102         { "Remote Installation Services",
 103                 "3060E8CE-7020-11D2-842D-00C04FA372D4" },
 104         { "Security Settings",
 105                 "803E14A0-B4FB-11D0-A0D0-00A0C90F574B" },
 106         { "Security policy processing",
 107                 "827D319E-6EAC-11D2-A4EA-00C04F79F83A" },
 108         { "unknown",
 109                 "3060E8D0-7020-11D2-842D-00C04FA372D4" },
 110         { "unknown2",
 111                 "53D6AB1B-2488-11D1-A28C-00C04FB94F17" },
 112         { NULL, NULL }
 113 };
 114
 115 /****************************************************************
 116 ****************************************************************/
 117
 118 static const char *name_to_guid_string(const char *name,
 119                                        struct gp_table *table)
 120 {
 121         int i;
 122
 123         for (i = 0; table[i].name; i++) {
 124                 if (strequal(name, table[i].name)) {
 125                         return table[i].guid_string;
 126                 }
 127         }
 128
 129         return NULL;
 130 }
 131
 132 /****************************************************************
 133 ****************************************************************/
 134
 135 static const char *guid_string_to_name(const char *guid_string,
 136                                        struct gp_table *table)
 137 {
 138         int i;
 139
 140         for (i = 0; table[i].guid_string; i++) {
 141                 if (strequal(guid_string, table[i].guid_string)) {
 142                         return table[i].name;
 143                 }
 144         }
 145
 146         return NULL;
 147 }
 148
 149 /****************************************************************
 150 ****************************************************************/
 151
 152 static const char *snapin_guid_string_to_name(const char *guid_string,
 153                                               struct gp_table *table)
 154 {
 155         int i;
 156         for (i = 0; table[i].guid_string; i++) {
 157                 if (strequal(guid_string, table[i].guid_string)) {
 158                         return table[i].name;
 159                 }
 160         }
 161         return NULL;
 162 }
 163
 164 #if 0 /* unused */
 165 static const char *default_gpo_name_to_guid_string(const char *name)
 166 {
 167         return name_to_guid_string(name, gpo_default_policy);
 168 }
 169
 170 static const char *default_gpo_guid_string_to_name(const char *guid)
 171 {
 172         return guid_string_to_name(guid, gpo_default_policy);
 173 }
 174 #endif
 175
 176 /****************************************************************
 177 ****************************************************************/
 178
 179 const char *cse_gpo_guid_string_to_name(const char *guid)
 180 {
 181         return guid_string_to_name(guid, gpo_cse_extensions);
 182 }
 183
 184 /****************************************************************
 185 ****************************************************************/
 186
 187 const char *cse_gpo_name_to_guid_string(const char *name)
 188 {
 189         return name_to_guid_string(name, gpo_cse_extensions);
 190 }
 191
 192 /****************************************************************
 193 ****************************************************************/
 194
 195 const char *cse_snapin_gpo_guid_string_to_name(const char *guid)
 196 {
 197         return snapin_guid_string_to_name(guid, gpo_cse_snapin_extensions);
 198 }
 199
 200 /****************************************************************
 201 ****************************************************************/
 202
 203 void dump_gp_ext(struct GP_EXT *gp_ext, int debuglevel)
 204 {
 205         int lvl = debuglevel;
 206         int i;
 207
 208         if (gp_ext == NULL) {
 209                 return;
 210         }
 211
 212         DEBUG(lvl,("\t---------------------\n\n"));
 213         DEBUGADD(lvl,("\tname:\t\t\t%s\n", gp_ext->gp_extension));
 214
 215         for (i=0; i< gp_ext->num_exts; i++) {
 216
 217                 DEBUGADD(lvl,("\textension:\t\t\t%s\n",
 218                         gp_ext->extensions_guid[i]));
 219                 DEBUGADD(lvl,("\textension (name):\t\t\t%s\n",
 220                         gp_ext->extensions[i]));
 221
 222                 DEBUGADD(lvl,("\tsnapin:\t\t\t%s\n",
 223                         gp_ext->snapins_guid[i]));
 224                 DEBUGADD(lvl,("\tsnapin (name):\t\t\t%s\n",
 225                         gp_ext->snapins[i]));
 226         }
 227 }
 228
 229 #ifdef HAVE_LDAP
 230
 231 /****************************************************************
 232 ****************************************************************/
 233
 234 void dump_gpo(ADS_STRUCT *ads,
 235               TALLOC_CTX *mem_ctx,
 236               struct GROUP_POLICY_OBJECT *gpo,
 237               int debuglevel)
 238 {
 239         int lvl = debuglevel;
 240
 241         if (gpo == NULL) {
 242                 return;
 243         }
 244
 245         DEBUG(lvl,("---------------------\n\n"));
 246
 247         DEBUGADD(lvl,("name:\t\t\t%s\n", gpo->name));
 248         DEBUGADD(lvl,("displayname:\t\t%s\n", gpo->display_name));
 249         DEBUGADD(lvl,("version:\t\t%d (0x%08x)\n", gpo->version, gpo->version));
 250         DEBUGADD(lvl,("version_user:\t\t%d (0x%04x)\n",
 251                 GPO_VERSION_USER(gpo->version),
 252                 GPO_VERSION_USER(gpo->version)));
 253         DEBUGADD(lvl,("version_machine:\t%d (0x%04x)\n",
 254                 GPO_VERSION_MACHINE(gpo->version),
 255                  GPO_VERSION_MACHINE(gpo->version)));
 256         DEBUGADD(lvl,("filesyspath:\t\t%s\n", gpo->file_sys_path));
 257         DEBUGADD(lvl,("dspath:\t\t%s\n", gpo->ds_path));
 258
 259         DEBUGADD(lvl,("options:\t\t%d ", gpo->options));
 260         switch (gpo->options) {
 261                 case GPFLAGS_ALL_ENABLED:
 262                         DEBUGADD(lvl,("GPFLAGS_ALL_ENABLED\n"));
 263                         break;
 264                 case GPFLAGS_USER_SETTINGS_DISABLED:
 265                         DEBUGADD(lvl,("GPFLAGS_USER_SETTINGS_DISABLED\n"));
 266                         break;
 267                 case GPFLAGS_MACHINE_SETTINGS_DISABLED:
 268                         DEBUGADD(lvl,("GPFLAGS_MACHINE_SETTINGS_DISABLED\n"));
 269                         break;
 270                 case GPFLAGS_ALL_DISABLED:
 271                         DEBUGADD(lvl,("GPFLAGS_ALL_DISABLED\n"));
 272                         break;
 273                 default:
 274                         DEBUGADD(lvl,("unknown option: %d\n", gpo->options));
 275                         break;
 276         }
 277
 278         DEBUGADD(lvl,("link:\t\t\t%s\n", gpo->link));
 279         DEBUGADD(lvl,("link_type:\t\t%d ", gpo->link_type));
 280         switch (gpo->link_type) {
 281                 case GP_LINK_UNKOWN:
 282                         DEBUGADD(lvl,("GP_LINK_UNKOWN\n"));
 283                         break;
 284                 case GP_LINK_OU:
 285                         DEBUGADD(lvl,("GP_LINK_OU\n"));
 286                         break;
 287                 case GP_LINK_DOMAIN:
 288                         DEBUGADD(lvl,("GP_LINK_DOMAIN\n"));
 289                         break;
 290                 case GP_LINK_SITE:
 291                         DEBUGADD(lvl,("GP_LINK_SITE\n"));
 292                         break;
 293                 case GP_LINK_MACHINE:
 294                         DEBUGADD(lvl,("GP_LINK_MACHINE\n"));
 295                         break;
 296                 default:
 297                         break;
 298         }
 299
 300         DEBUGADD(lvl,("machine_extensions:\t%s\n", gpo->machine_extensions));
 301
 302         if (gpo->machine_extensions) {
 303
 304                 struct GP_EXT *gp_ext = NULL;
 305
 306                 if (!ads_parse_gp_ext(mem_ctx, gpo->machine_extensions,
 307                                       &gp_ext)) {
 308                         return;
 309                 }
 310                 dump_gp_ext(gp_ext, lvl);
 311         }
 312
 313         DEBUGADD(lvl,("user_extensions:\t%s\n", gpo->user_extensions));
 314
 315         if (gpo->user_extensions) {
 316
 317                 struct GP_EXT *gp_ext = NULL;
 318
 319                 if (!ads_parse_gp_ext(mem_ctx, gpo->user_extensions,
 320                                       &gp_ext)) {
 321                         return;
 322                 }
 323                 dump_gp_ext(gp_ext, lvl);
 324         }
 325         if (gpo->security_descriptor) {
 326                 DEBUGADD(lvl,("security descriptor:\n"));
 327
 328                 NDR_PRINT_DEBUG(security_descriptor, gpo->security_descriptor);
 329         }
 330 }
 331
 332 /****************************************************************
 333 ****************************************************************/
 334
 335 void dump_gpo_list(ADS_STRUCT *ads,
 336                    TALLOC_CTX *mem_ctx,
 337                    struct GROUP_POLICY_OBJECT *gpo_list,
 338                    int debuglevel)
 339 {
 340         struct GROUP_POLICY_OBJECT *gpo = NULL;
 341
 342         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 343                 dump_gpo(ads, mem_ctx, gpo, debuglevel);
 344         }
 345 }
 346
 347 /****************************************************************
 348 ****************************************************************/
 349
 350 void dump_gplink(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, struct GP_LINK *gp_link)
 351 {
 352         ADS_STATUS status;
 353         int i;
 354         int lvl = 10;
 355
 356         if (gp_link == NULL) {
 357                 return;
 358         }
 359
 360         DEBUG(lvl,("---------------------\n\n"));
 361
 362         DEBUGADD(lvl,("gplink: %s\n", gp_link->gp_link));
 363         DEBUGADD(lvl,("gpopts: %d ", gp_link->gp_opts));
 364         switch (gp_link->gp_opts) {
 365                 case GPOPTIONS_INHERIT:
 366                         DEBUGADD(lvl,("GPOPTIONS_INHERIT\n"));
 367                         break;
 368                 case GPOPTIONS_BLOCK_INHERITANCE:
 369                         DEBUGADD(lvl,("GPOPTIONS_BLOCK_INHERITANCE\n"));
 370                         break;
 371                 default:
 372                         break;
 373         }
 374
 375         DEBUGADD(lvl,("num links: %d\n", gp_link->num_links));
 376
 377         for (i = 0; i < gp_link->num_links; i++) {
 378
 379                 DEBUGADD(lvl,("---------------------\n\n"));
 380
 381                 DEBUGADD(lvl,("link: #%d\n", i + 1));
 382                 DEBUGADD(lvl,("name: %s\n", gp_link->link_names[i]));
 383
 384                 DEBUGADD(lvl,("opt: %d ", gp_link->link_opts[i]));
 385                 if (gp_link->link_opts[i] & GPO_LINK_OPT_ENFORCED) {
 386                         DEBUGADD(lvl,("GPO_LINK_OPT_ENFORCED "));
 387                 }
 388                 if (gp_link->link_opts[i] & GPO_LINK_OPT_DISABLED) {
 389                         DEBUGADD(lvl,("GPO_LINK_OPT_DISABLED"));
 390                 }
 391                 DEBUGADD(lvl,("\n"));
 392
 393                 if (ads != NULL && mem_ctx != NULL) {
 394
 395                         struct GROUP_POLICY_OBJECT gpo;
 396
 397                         status = ads_get_gpo(ads, mem_ctx,
 398                                              gp_link->link_names[i],
 399                                              NULL, NULL, &gpo);
 400                         if (!ADS_ERR_OK(status)) {
 401                                 DEBUG(lvl,("get gpo for %s failed: %s\n",
 402                                         gp_link->link_names[i],
 403                                         ads_errstr(status)));
 404                                 return;
 405                         }
 406                         dump_gpo(ads, mem_ctx, &gpo, lvl);
 407                 }
 408         }
 409 }
 410
 411 #endif /* HAVE_LDAP */
 412
 413 /****************************************************************
 414 ****************************************************************/
 415
 416 static bool gpo_get_gp_ext_from_gpo(TALLOC_CTX *mem_ctx,
 417                                     uint32_t flags,
 418                                     struct GROUP_POLICY_OBJECT *gpo,
 419                                     struct GP_EXT **gp_ext)
 420 {
 421         ZERO_STRUCTP(*gp_ext);
 422
 423         if (flags & GPO_INFO_FLAG_MACHINE) {
 424
 425                 if (gpo->machine_extensions) {
 426
 427                         if (!ads_parse_gp_ext(mem_ctx, gpo->machine_extensions,
 428                                               gp_ext)) {
 429                                 return false;
 430                         }
 431                 }
 432         } else {
 433
 434                 if (gpo->user_extensions) {
 435
 436                         if (!ads_parse_gp_ext(mem_ctx, gpo->user_extensions,
 437                                               gp_ext)) {
 438                                 return false;
 439                         }
 440                 }
 441         }
 442
 443         return true;
 444 }
 445
 446 /****************************************************************
 447 ****************************************************************/
 448
 449 ADS_STATUS gpo_process_a_gpo(ADS_STRUCT *ads,
 450                              TALLOC_CTX *mem_ctx,
 451                              const NT_USER_TOKEN *token,
 452                              struct registry_key *root_key,
 453                              struct GROUP_POLICY_OBJECT *gpo,
 454                              const char *extension_guid_filter,
 455                              uint32_t flags)
 456 {
 457         struct GP_EXT *gp_ext = NULL;
 458         int i;
 459
 460         DEBUG(10,("gpo_process_a_gpo: processing gpo %s (%s)\n",
 461                 gpo->name, gpo->display_name));
 462         if (extension_guid_filter) {
 463                 DEBUGADD(10,("gpo_process_a_gpo: using filter %s (%s)\n",
 464                         extension_guid_filter,
 465                         cse_gpo_guid_string_to_name(extension_guid_filter)));
 466         }
 467
 468         if (!gpo_get_gp_ext_from_gpo(mem_ctx, flags, gpo, &gp_ext)) {
 469                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 470         }
 471
 472         if (!gp_ext || !gp_ext->num_exts) {
 473                 if (flags & GPO_INFO_FLAG_VERBOSE) {
 474                         DEBUG(0,("gpo_process_a_gpo: "
 475                                 "no policies in %s (%s) for this extension\n",
 476                                 gpo->name, gpo->display_name));
 477                 }
 478                 return ADS_SUCCESS;
 479         }
 480
 481         for (i=0; i<gp_ext->num_exts; i++) {
 482
 483                 NTSTATUS ntstatus;
 484
 485                 if (extension_guid_filter &&
 486                     !strequal(extension_guid_filter,
 487                               gp_ext->extensions_guid[i])) {
 488                         continue;
 489                 }
 490
 491                 ntstatus = gpext_process_extension(ads, mem_ctx,
 492                                                    flags, token, root_key, gpo,
 493                                                    gp_ext->extensions_guid[i],
 494                                                    gp_ext->snapins_guid[i]);
 495                 if (!NT_STATUS_IS_OK(ntstatus)) {
 496                         ADS_ERROR_NT(ntstatus);
 497                 }
 498         }
 499
 500         return ADS_SUCCESS;
 501 }
 502
 503 /****************************************************************
 504 ****************************************************************/
 505
 506 static ADS_STATUS gpo_process_gpo_list_by_ext(ADS_STRUCT *ads,
 507                                               TALLOC_CTX *mem_ctx,
 508                                               const NT_USER_TOKEN *token,
 509                                               struct registry_key *root_key,
 510                                               struct GROUP_POLICY_OBJECT *gpo_list,
 511                                               const char *extensions_guid,
 512                                               uint32_t flags)
 513 {
 514         ADS_STATUS status;
 515         struct GROUP_POLICY_OBJECT *gpo;
 516
 517         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 518
 519                 if (gpo->link_type == GP_LINK_LOCAL) {
 520                         continue;
 521                 }
 522
 523
 524                 /* FIXME: we need to pass down the *list* down to the
 525                  * extension, otherwise we cannot store the e.g. the *list* of
 526                  * logon-scripts correctly (for more then one GPO) */
 527
 528                 status = gpo_process_a_gpo(ads, mem_ctx, token, root_key,
 529                                            gpo, extensions_guid, flags);
 530
 531                 if (!ADS_ERR_OK(status)) {
 532                         DEBUG(0,("failed to process gpo by ext: %s\n",
 533                                 ads_errstr(status)));
 534                         return status;
 535                 }
 536         }
 537
 538         return ADS_SUCCESS;
 539 }
 540
 541 /****************************************************************
 542 ****************************************************************/
 543
 544 ADS_STATUS gpo_process_gpo_list(ADS_STRUCT *ads,
 545                                 TALLOC_CTX *mem_ctx,
 546                                 const NT_USER_TOKEN *token,
 547                                 struct GROUP_POLICY_OBJECT *gpo_list,
 548                                 const char *extensions_guid_filter,
 549                                 uint32_t flags)
 550 {
 551         ADS_STATUS status = ADS_SUCCESS;
 552         struct gp_extension *gp_ext_list = NULL;
 553         struct gp_extension *gp_ext = NULL;
 554         struct registry_key *root_key = NULL;
 555         struct gp_registry_context *reg_ctx = NULL;
 556 #if 0
 557         WERROR werr;
 558 #endif
 559         status = ADS_ERROR_NT(init_gp_extensions(mem_ctx));
 560         if (!ADS_ERR_OK(status)) {
 561                 return status;
 562         }
 563
 564         gp_ext_list = get_gp_extension_list();
 565         if (!gp_ext_list) {
 566                 return ADS_ERROR_NT(NT_STATUS_DLL_INIT_FAILED);
 567         }
 568 /* FIXME Needs to be replaced with new patchfile_preg calls */
 569 #if 0
 570         /* get the key here */
 571         if (flags & GPO_LIST_FLAG_MACHINE) {
 572                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKLM, REG_KEY_WRITE,
 573                                        get_system_token(),
 574                                        &reg_ctx);
 575         } else {
 576                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
 577                                        token,
 578                                        &reg_ctx);
 579         }
 580         if (!W_ERROR_IS_OK(werr)) {
 581                 talloc_free(reg_ctx);
 582                 return ADS_ERROR_NT(werror_to_ntstatus(werr));
 583         }
 584 #endif
 585
 586         root_key = reg_ctx->curr_key;
 587
 588         for (gp_ext = gp_ext_list; gp_ext; gp_ext = gp_ext->next) {
 589
 590                 const char *guid_str = NULL;
 591
 592                 guid_str = GUID_string(mem_ctx, gp_ext->guid);
 593                 if (!guid_str) {
 594                         status = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 595                         goto done;
 596                 }
 597
 598                 if (extensions_guid_filter &&
 599                     (!strequal(guid_str, extensions_guid_filter)))  {
 600                         continue;
 601                 }
 602
 603                 DEBUG(0,("-------------------------------------------------\n"));
 604                 DEBUG(0,("gpo_process_gpo_list: processing ext: %s {%s}\n",
 605                         gp_ext->name, guid_str));
 606
 607
 608                 status = gpo_process_gpo_list_by_ext(ads, mem_ctx, token,
 609                                                      root_key, gpo_list,
 610                                                      guid_str, flags);
 611                 if (!ADS_ERR_OK(status)) {
 612                         goto done;
 613                 }
 614         }
 615
 616  done:
 617         talloc_free(reg_ctx);
 618         talloc_free(root_key);
 619         free_gp_extensions();
 620
 621         return status;
 622 }
 623
 624
 625 /****************************************************************
 626  check wether the version number in a GROUP_POLICY_OBJECT match those of the
 627  locally stored version. If not, fetch the required policy via CIFS
 628 ****************************************************************/
 629
 630 NTSTATUS check_refresh_gpo(ADS_STRUCT *ads,
 631                            TALLOC_CTX *mem_ctx,
 632                            const char *cache_dir,
 633                            struct loadparm_context *lp_ctx,
 634                            uint32_t flags,
 635                            struct GROUP_POLICY_OBJECT *gpo)
 636 {
 637         NTSTATUS result;
 638         char *server = NULL;
 639         char *share = NULL;
 640         char *nt_path = NULL;
 641         char *unix_path = NULL;
 642         uint32_t sysvol_gpt_version = 0;
 643         char *display_name = NULL;
 644
 645         result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
 646                                          &server, &share, &nt_path, &unix_path);
 647
 648         if (!NT_STATUS_IS_OK(result)) {
 649                 goto out;
 650         }
 651
 652         result = gpo_get_sysvol_gpt_version(mem_ctx,
 653                                             unix_path,
 654                                             &sysvol_gpt_version,
 655                                             &display_name);
 656         if (!NT_STATUS_IS_OK(result) &&
 657             !NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_FILE)) {
 658                 DEBUG(10,("check_refresh_gpo: "
 659                         "failed to get local gpt version: %s\n",
 660                         nt_errstr(result)));
 661                 goto out;
 662         }
 663
 664         DEBUG(10,("check_refresh_gpo: versions gpo %d sysvol %d\n",
 665                 gpo->version, sysvol_gpt_version));
 666
 667         /* FIXME: handle GPO_INFO_FLAG_FORCED_REFRESH from flags */
 668
 669         while (gpo->version > sysvol_gpt_version) {
 670
 671                 DEBUG(1,("check_refresh_gpo: need to refresh GPO\n"));
 672
 673                 result = gpo_fetch_files(mem_ctx, ads, lp_ctx, cache_dir, gpo);
 674                 if (!NT_STATUS_IS_OK(result)) {
 675                         goto out;
 676                 }
 677
 678                 result = gpo_get_sysvol_gpt_version(mem_ctx,
 679                                                     unix_path,
 680                                                     &sysvol_gpt_version,
 681                                                     &display_name);
 682                 if (!NT_STATUS_IS_OK(result)) {
 683                         DEBUG(10,("check_refresh_gpo: "
 684                                 "failed to get local gpt version: %s\n",
 685                                 nt_errstr(result)));
 686                         goto out;
 687                 }
 688
 689                 if (gpo->version == sysvol_gpt_version) {
 690                         break;
 691                 }
 692         }
 693
 694         DEBUG(10,("Name:\t\t\t%s (%s)\n", gpo->display_name, gpo->name));
 695         DEBUGADD(10,("sysvol GPT version:\t%d (user: %d, machine: %d)\n",
 696                 sysvol_gpt_version,
 697                 GPO_VERSION_USER(sysvol_gpt_version),
 698                 GPO_VERSION_MACHINE(sysvol_gpt_version)));
 699         DEBUGADD(10,("LDAP GPO version:\t%d (user: %d, machine: %d)\n",
 700                 gpo->version,
 701                 GPO_VERSION_USER(gpo->version),
 702                 GPO_VERSION_MACHINE(gpo->version)));
 703         DEBUGADD(10,("LDAP GPO link:\t\t%s\n", gpo->link));
 704
 705         result = NT_STATUS_OK;
 706
 707  out:
 708         return result;
 709
 710 }
 711
 712 /****************************************************************
 713  check wether the version numbers in the gpo_list match the locally stored, if
 714  not, go and get each required GPO via CIFS
 715  ****************************************************************/
 716
 717 NTSTATUS check_refresh_gpo_list(ADS_STRUCT *ads,
 718                                 TALLOC_CTX *mem_ctx,
 719                                 const char *cache_dir,
 720                                 struct loadparm_context *lp_ctx,
 721                                 uint32_t flags,
 722                                 struct GROUP_POLICY_OBJECT *gpo_list)
 723 {
 724         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
 725         struct GROUP_POLICY_OBJECT *gpo;
 726
 727         if (!gpo_list) {
 728                 return NT_STATUS_INVALID_PARAMETER;
 729         }
 730
 731         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 732
 733                 result = check_refresh_gpo(ads, mem_ctx, cache_dir, lp_ctx, flags, gpo);
 734                 if (!NT_STATUS_IS_OK(result)) {
 735                         goto out;
 736                 }
 737         }
 738
 739         result = NT_STATUS_OK;
 740
 741  out:
 742         /* FIXME close cli connection */
 743
 744         return result;
 745 }
 746
 747 /****************************************************************
 748 ****************************************************************/
 749
 750 NTSTATUS gpo_get_unix_path(TALLOC_CTX *mem_ctx,
 751                            const char *cache_dir,
 752                            struct GROUP_POLICY_OBJECT *gpo,
 753                            char **unix_path)
 754 {
 755         char *server, *share, *nt_path;
 756         return gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
 757                                        &server, &share, &nt_path, unix_path);
 758 }
 759
 760 /****************************************************************
 761 ****************************************************************/
 762
 763 char *gpo_flag_str(TALLOC_CTX *ctx, uint32_t flags)
 764 {
 765         char *str = NULL;
 766
 767         if (flags == 0) {
 768                 return NULL;
 769         }
 770
 771         if (flags & GPO_INFO_FLAG_SLOWLINK)
 772                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_SLOWLINK ");
 773         if (flags & GPO_INFO_FLAG_VERBOSE)
 774                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_VERBOSE ");
 775         if (flags & GPO_INFO_FLAG_SAFEMODE_BOOT)
 776                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_SAFEMODE_BOOT ");
 777         if (flags & GPO_INFO_FLAG_NOCHANGES)
 778                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_NOCHANGES ");
 779         if (flags & GPO_INFO_FLAG_MACHINE)
 780                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_MACHINE ");
 781         if (flags & GPO_INFO_FLAG_LOGRSOP_TRANSITION)
 782                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_LOGRSOP_TRANSITION ");
 783         if (flags & GPO_INFO_FLAG_LINKTRANSITION)
 784                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_LINKTRANSITION ");
 785         if (flags & GPO_INFO_FLAG_FORCED_REFRESH)
 786                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_FORCED_REFRESH ");
 787         if (flags & GPO_INFO_FLAG_BACKGROUND)
 788                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_BACKGROUND ");
 789
 790         return str;
 791 }
 792
 793 /****************************************************************
 794 ****************************************************************/
 795
 796 NTSTATUS gp_find_file(TALLOC_CTX *mem_ctx,
 797                       uint32_t flags,
 798                       const char *filename,
 799                       const char *suffix,
 800                       const char **filename_out)
 801 {
 802         const char *tmp = NULL;
 803         struct stat sbuf;
 804         const char *path = NULL;
 805
 806         if (flags & GPO_LIST_FLAG_MACHINE) {
 807                 path = "Machine";
 808         } else {
 809                 path = "User";
 810         }
 811
 812         tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
 813                               path, suffix);
 814         NT_STATUS_HAVE_NO_MEMORY(tmp);
 815
 816         if (stat(tmp, &sbuf) == 0) {
 817                 *filename_out = tmp;
 818                 return NT_STATUS_OK;
 819         }
 820
 821         path = talloc_strdup_upper(mem_ctx, path);
 822         NT_STATUS_HAVE_NO_MEMORY(path);
 823
 824         tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
 825                               path, suffix);
 826         NT_STATUS_HAVE_NO_MEMORY(tmp);
 827
 828         if (stat(tmp, &sbuf) == 0) {
 829                 *filename_out = tmp;
 830                 return NT_STATUS_OK;
 831         }
 832
 833         return NT_STATUS_NO_SUCH_FILE;
 834 }
 835
 836 /****************************************************************
 837 ****************************************************************/
 838
 839 ADS_STATUS gp_get_machine_token(ADS_STRUCT *ads,
 840                                 TALLOC_CTX *mem_ctx,
 841                                 struct loadparm_context *lp_ctx,
 842                                 const char *dn,
 843                                 NT_USER_TOKEN **token)
 844 {
 845         NT_USER_TOKEN *ad_token = NULL;
 846         ADS_STATUS status;
 847 #if _SAMBA_BUILD_ == 4
 848         struct auth_session_info *info;
 849 #else
 850         NTSTATUS ntstatus;
 851 #endif
 852
 853 #ifndef HAVE_ADS
 854         return ADS_ERROR_NT(NT_STATUS_NOT_SUPPORTED);
 855 #endif
 856         status = ads_get_sid_token(ads, mem_ctx, dn, &ad_token);
 857         if (!ADS_ERR_OK(status)) {
 858                 return status;
 859         }
 860 #if _SAMBA_BUILD_ == 4
 861         info = system_session(mem_ctx, lp_ctx);
 862         *token = info->security_token;
 863 #else
 864         ntstatus = merge_nt_token(mem_ctx, ad_token, get_system_token(),
 865                                   token);
 866         if (!NT_STATUS_IS_OK(ntstatus)) {
 867                 return ADS_ERROR_NT(ntstatus);
 868         }
 869 #endif
 870         return ADS_SUCCESS;
 871 }