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 #include "../libcli/security/security.h"
  25 #if _SAMBA_BUILD_ == 4
  26 #include "system/filesys.h"
  27 #include "auth/auth.h"
  28 #include <talloc.h>
  29 #include "source4/libgpo/ads_convenience.h"
  30 #endif
  31 #undef strdup
  32
  33 #if 0
  34 #define DEFAULT_DOMAIN_POLICY "Default Domain Policy"
  35 #define DEFAULT_DOMAIN_CONTROLLERS_POLICY "Default Domain Controllers Policy"
  36 #endif
  37
  38 /* should we store a parsed guid ? */
  39 struct gp_table {
  40         const char *name;
  41         const char *guid_string;
  42 };
  43
  44 #if 0 /* unused */
  45 static struct gp_table gpo_default_policy[] = {
  46         { DEFAULT_DOMAIN_POLICY,
  47                 "31B2F340-016D-11D2-945F-00C04FB984F9" },
  48         { DEFAULT_DOMAIN_CONTROLLERS_POLICY,
  49                 "6AC1786C-016F-11D2-945F-00C04fB984F9" },
  50         { NULL, NULL }
  51 };
  52 #endif
  53
  54 /* the following is seen in gPCMachineExtensionNames / gPCUserExtensionNames */
  55
  56 static struct gp_table gpo_cse_extensions[] = {
  57         /* used to be "Administrative Templates Extension" */
  58         /* "Registry Settings"
  59         (http://support.microsoft.com/kb/216357/EN-US/) */
  60         { "Registry Settings",
  61                 GP_EXT_GUID_REGISTRY },
  62         { "Microsoft Disc Quota",
  63                 "3610EDA5-77EF-11D2-8DC5-00C04FA31A66" },
  64         { "EFS recovery",
  65                 "B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
  66         { "Folder Redirection",
  67                 "25537BA6-77A8-11D2-9B6C-0000F8080861" },
  68         { "IP Security",
  69                 "E437BC1C-AA7D-11D2-A382-00C04F991E27" },
  70         { "Internet Explorer Branding",
  71                 "A2E30F80-D7DE-11d2-BBDE-00C04F86AE3B" },
  72         { "QoS Packet Scheduler",
  73                 "426031c0-0b47-4852-b0ca-ac3d37bfcb39" },
  74         { "Scripts",
  75                 GP_EXT_GUID_SCRIPTS },
  76         { "Security",
  77                 GP_EXT_GUID_SECURITY },
  78         { "Software Installation",
  79                 "C6DC5466-785A-11D2-84D0-00C04FB169F7" },
  80         { "Wireless Group Policy",
  81                 "0ACDD40C-75AC-BAA0-BF6DE7E7FE63" },
  82         { "Application Management",
  83                 "C6DC5466-785A-11D2-84D0-00C04FB169F7" },
  84         { "unknown",
  85                 "3060E8D0-7020-11D2-842D-00C04FA372D4" },
  86         { NULL, NULL }
  87 };
  88
  89 /* guess work */
  90 static struct gp_table gpo_cse_snapin_extensions[] = {
  91         { "Administrative Templates",
  92                 "0F6B957D-509E-11D1-A7CC-0000F87571E3" },
  93         { "Certificates",
  94                 "53D6AB1D-2488-11D1-A28C-00C04FB94F17" },
  95         { "EFS recovery policy processing",
  96                 "B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
  97         { "Folder Redirection policy processing",
  98                 "25537BA6-77A8-11D2-9B6C-0000F8080861" },
  99         { "Folder Redirection",
 100                 "88E729D6-BDC1-11D1-BD2A-00C04FB9603F" },
 101         { "Registry policy processing",
 102                 "35378EAC-683F-11D2-A89A-00C04FBBCFA2" },
 103         { "Remote Installation Services",
 104                 "3060E8CE-7020-11D2-842D-00C04FA372D4" },
 105         { "Security Settings",
 106                 "803E14A0-B4FB-11D0-A0D0-00A0C90F574B" },
 107         { "Security policy processing",
 108                 "827D319E-6EAC-11D2-A4EA-00C04F79F83A" },
 109         { "unknown",
 110                 "3060E8D0-7020-11D2-842D-00C04FA372D4" },
 111         { "unknown2",
 112                 "53D6AB1B-2488-11D1-A28C-00C04FB94F17" },
 113         { NULL, NULL }
 114 };
 115
 116 /****************************************************************
 117 ****************************************************************/
 118
 119 static const char *name_to_guid_string(const char *name,
 120                                        struct gp_table *table)
 121 {
 122         int i;
 123
 124         for (i = 0; table[i].name; i++) {
 125                 if (strequal(name, table[i].name)) {
 126                         return table[i].guid_string;
 127                 }
 128         }
 129
 130         return NULL;
 131 }
 132
 133 /****************************************************************
 134 ****************************************************************/
 135
 136 static const char *guid_string_to_name(const char *guid_string,
 137                                        struct gp_table *table)
 138 {
 139         int i;
 140
 141         for (i = 0; table[i].guid_string; i++) {
 142                 if (strequal(guid_string, table[i].guid_string)) {
 143                         return table[i].name;
 144                 }
 145         }
 146
 147         return NULL;
 148 }
 149
 150 /****************************************************************
 151 ****************************************************************/
 152
 153 static const char *snapin_guid_string_to_name(const char *guid_string,
 154                                               struct gp_table *table)
 155 {
 156         int i;
 157         for (i = 0; table[i].guid_string; i++) {
 158                 if (strequal(guid_string, table[i].guid_string)) {
 159                         return table[i].name;
 160                 }
 161         }
 162         return NULL;
 163 }
 164
 165 #if 0 /* unused */
 166 static const char *default_gpo_name_to_guid_string(const char *name)
 167 {
 168         return name_to_guid_string(name, gpo_default_policy);
 169 }
 170
 171 static const char *default_gpo_guid_string_to_name(const char *guid)
 172 {
 173         return guid_string_to_name(guid, gpo_default_policy);
 174 }
 175 #endif
 176
 177 /****************************************************************
 178 ****************************************************************/
 179
 180 const char *cse_gpo_guid_string_to_name(const char *guid)
 181 {
 182         return guid_string_to_name(guid, gpo_cse_extensions);
 183 }
 184
 185 /****************************************************************
 186 ****************************************************************/
 187
 188 const char *cse_gpo_name_to_guid_string(const char *name)
 189 {
 190         return name_to_guid_string(name, gpo_cse_extensions);
 191 }
 192
 193 /****************************************************************
 194 ****************************************************************/
 195
 196 const char *cse_snapin_gpo_guid_string_to_name(const char *guid)
 197 {
 198         return snapin_guid_string_to_name(guid, gpo_cse_snapin_extensions);
 199 }
 200
 201 /****************************************************************
 202 ****************************************************************/
 203
 204 void dump_gp_ext(struct GP_EXT *gp_ext, int debuglevel)
 205 {
 206         int lvl = debuglevel;
 207         int i;
 208
 209         if (gp_ext == NULL) {
 210                 return;
 211         }
 212
 213         DEBUG(lvl,("\t---------------------\n\n"));
 214         DEBUGADD(lvl,("\tname:\t\t\t%s\n", gp_ext->gp_extension));
 215
 216         for (i=0; i< gp_ext->num_exts; i++) {
 217
 218                 DEBUGADD(lvl,("\textension:\t\t\t%s\n",
 219                         gp_ext->extensions_guid[i]));
 220                 DEBUGADD(lvl,("\textension (name):\t\t\t%s\n",
 221                         gp_ext->extensions[i]));
 222
 223                 DEBUGADD(lvl,("\tsnapin:\t\t\t%s\n",
 224                         gp_ext->snapins_guid[i]));
 225                 DEBUGADD(lvl,("\tsnapin (name):\t\t\t%s\n",
 226                         gp_ext->snapins[i]));
 227         }
 228 }
 229
 230 #ifdef HAVE_LDAP
 231
 232 /****************************************************************
 233 ****************************************************************/
 234
 235 void dump_gpo(ADS_STRUCT *ads,
 236               TALLOC_CTX *mem_ctx,
 237               struct GROUP_POLICY_OBJECT *gpo,
 238               int debuglevel)
 239 {
 240         int lvl = debuglevel;
 241
 242         if (gpo == NULL) {
 243                 return;
 244         }
 245
 246         DEBUG(lvl,("---------------------\n\n"));
 247
 248         DEBUGADD(lvl,("name:\t\t\t%s\n", gpo->name));
 249         DEBUGADD(lvl,("displayname:\t\t%s\n", gpo->display_name));
 250         DEBUGADD(lvl,("version:\t\t%d (0x%08x)\n", gpo->version, gpo->version));
 251         DEBUGADD(lvl,("version_user:\t\t%d (0x%04x)\n",
 252                 GPO_VERSION_USER(gpo->version),
 253                 GPO_VERSION_USER(gpo->version)));
 254         DEBUGADD(lvl,("version_machine:\t%d (0x%04x)\n",
 255                 GPO_VERSION_MACHINE(gpo->version),
 256                  GPO_VERSION_MACHINE(gpo->version)));
 257         DEBUGADD(lvl,("filesyspath:\t\t%s\n", gpo->file_sys_path));
 258         DEBUGADD(lvl,("dspath:\t\t%s\n", gpo->ds_path));
 259
 260         DEBUGADD(lvl,("options:\t\t%d ", gpo->options));
 261         switch (gpo->options) {
 262                 case GPFLAGS_ALL_ENABLED:
 263                         DEBUGADD(lvl,("GPFLAGS_ALL_ENABLED\n"));
 264                         break;
 265                 case GPFLAGS_USER_SETTINGS_DISABLED:
 266                         DEBUGADD(lvl,("GPFLAGS_USER_SETTINGS_DISABLED\n"));
 267                         break;
 268                 case GPFLAGS_MACHINE_SETTINGS_DISABLED:
 269                         DEBUGADD(lvl,("GPFLAGS_MACHINE_SETTINGS_DISABLED\n"));
 270                         break;
 271                 case GPFLAGS_ALL_DISABLED:
 272                         DEBUGADD(lvl,("GPFLAGS_ALL_DISABLED\n"));
 273                         break;
 274                 default:
 275                         DEBUGADD(lvl,("unknown option: %d\n", gpo->options));
 276                         break;
 277         }
 278
 279         DEBUGADD(lvl,("link:\t\t\t%s\n", gpo->link));
 280         DEBUGADD(lvl,("link_type:\t\t%d ", gpo->link_type));
 281         switch (gpo->link_type) {
 282                 case GP_LINK_UNKOWN:
 283                         DEBUGADD(lvl,("GP_LINK_UNKOWN\n"));
 284                         break;
 285                 case GP_LINK_OU:
 286                         DEBUGADD(lvl,("GP_LINK_OU\n"));
 287                         break;
 288                 case GP_LINK_DOMAIN:
 289                         DEBUGADD(lvl,("GP_LINK_DOMAIN\n"));
 290                         break;
 291                 case GP_LINK_SITE:
 292                         DEBUGADD(lvl,("GP_LINK_SITE\n"));
 293                         break;
 294                 case GP_LINK_MACHINE:
 295                         DEBUGADD(lvl,("GP_LINK_MACHINE\n"));
 296                         break;
 297                 default:
 298                         break;
 299         }
 300
 301         DEBUGADD(lvl,("machine_extensions:\t%s\n", gpo->machine_extensions));
 302
 303         if (gpo->machine_extensions) {
 304
 305                 struct GP_EXT *gp_ext = NULL;
 306
 307                 if (!ads_parse_gp_ext(mem_ctx, gpo->machine_extensions,
 308                                       &gp_ext)) {
 309                         return;
 310                 }
 311                 dump_gp_ext(gp_ext, lvl);
 312         }
 313
 314         DEBUGADD(lvl,("user_extensions:\t%s\n", gpo->user_extensions));
 315
 316         if (gpo->user_extensions) {
 317
 318                 struct GP_EXT *gp_ext = NULL;
 319
 320                 if (!ads_parse_gp_ext(mem_ctx, gpo->user_extensions,
 321                                       &gp_ext)) {
 322                         return;
 323                 }
 324                 dump_gp_ext(gp_ext, lvl);
 325         }
 326         if (gpo->security_descriptor) {
 327                 DEBUGADD(lvl,("security descriptor:\n"));
 328
 329                 NDR_PRINT_DEBUG(security_descriptor, gpo->security_descriptor);
 330         }
 331 }
 332
 333 /****************************************************************
 334 ****************************************************************/
 335
 336 void dump_gpo_list(ADS_STRUCT *ads,
 337                    TALLOC_CTX *mem_ctx,
 338                    struct GROUP_POLICY_OBJECT *gpo_list,
 339                    int debuglevel)
 340 {
 341         struct GROUP_POLICY_OBJECT *gpo = NULL;
 342
 343         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 344                 dump_gpo(ads, mem_ctx, gpo, debuglevel);
 345         }
 346 }
 347
 348 /****************************************************************
 349 ****************************************************************/
 350
 351 void dump_gplink(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, struct GP_LINK *gp_link)
 352 {
 353         ADS_STATUS status;
 354         int i;
 355         int lvl = 10;
 356
 357         if (gp_link == NULL) {
 358                 return;
 359         }
 360
 361         DEBUG(lvl,("---------------------\n\n"));
 362
 363         DEBUGADD(lvl,("gplink: %s\n", gp_link->gp_link));
 364         DEBUGADD(lvl,("gpopts: %d ", gp_link->gp_opts));
 365         switch (gp_link->gp_opts) {
 366                 case GPOPTIONS_INHERIT:
 367                         DEBUGADD(lvl,("GPOPTIONS_INHERIT\n"));
 368                         break;
 369                 case GPOPTIONS_BLOCK_INHERITANCE:
 370                         DEBUGADD(lvl,("GPOPTIONS_BLOCK_INHERITANCE\n"));
 371                         break;
 372                 default:
 373                         break;
 374         }
 375
 376         DEBUGADD(lvl,("num links: %d\n", gp_link->num_links));
 377
 378         for (i = 0; i < gp_link->num_links; i++) {
 379
 380                 DEBUGADD(lvl,("---------------------\n\n"));
 381
 382                 DEBUGADD(lvl,("link: #%d\n", i + 1));
 383                 DEBUGADD(lvl,("name: %s\n", gp_link->link_names[i]));
 384
 385                 DEBUGADD(lvl,("opt: %d ", gp_link->link_opts[i]));
 386                 if (gp_link->link_opts[i] & GPO_LINK_OPT_ENFORCED) {
 387                         DEBUGADD(lvl,("GPO_LINK_OPT_ENFORCED "));
 388                 }
 389                 if (gp_link->link_opts[i] & GPO_LINK_OPT_DISABLED) {
 390                         DEBUGADD(lvl,("GPO_LINK_OPT_DISABLED"));
 391                 }
 392                 DEBUGADD(lvl,("\n"));
 393
 394                 if (ads != NULL && mem_ctx != NULL) {
 395
 396                         struct GROUP_POLICY_OBJECT gpo;
 397
 398                         status = ads_get_gpo(ads, mem_ctx,
 399                                              gp_link->link_names[i],
 400                                              NULL, NULL, &gpo);
 401                         if (!ADS_ERR_OK(status)) {
 402                                 DEBUG(lvl,("get gpo for %s failed: %s\n",
 403                                         gp_link->link_names[i],
 404                                         ads_errstr(status)));
 405                                 return;
 406                         }
 407                         dump_gpo(ads, mem_ctx, &gpo, lvl);
 408                 }
 409         }
 410 }
 411
 412 #endif /* HAVE_LDAP */
 413
 414 /****************************************************************
 415 ****************************************************************/
 416
 417 static bool gpo_get_gp_ext_from_gpo(TALLOC_CTX *mem_ctx,
 418                                     uint32_t flags,
 419                                     struct GROUP_POLICY_OBJECT *gpo,
 420                                     struct GP_EXT **gp_ext)
 421 {
 422         ZERO_STRUCTP(*gp_ext);
 423
 424         if (flags & GPO_INFO_FLAG_MACHINE) {
 425
 426                 if (gpo->machine_extensions) {
 427
 428                         if (!ads_parse_gp_ext(mem_ctx, gpo->machine_extensions,
 429                                               gp_ext)) {
 430                                 return false;
 431                         }
 432                 }
 433         } else {
 434
 435                 if (gpo->user_extensions) {
 436
 437                         if (!ads_parse_gp_ext(mem_ctx, gpo->user_extensions,
 438                                               gp_ext)) {
 439                                 return false;
 440                         }
 441                 }
 442         }
 443
 444         return true;
 445 }
 446
 447 /****************************************************************
 448 ****************************************************************/
 449
 450 ADS_STATUS gpo_process_a_gpo(ADS_STRUCT *ads,
 451                              TALLOC_CTX *mem_ctx,
 452                              const struct security_token *token,
 453                              struct registry_key *root_key,
 454                              struct GROUP_POLICY_OBJECT *gpo,
 455                              const char *extension_guid_filter,
 456                              uint32_t flags)
 457 {
 458         struct GP_EXT *gp_ext = NULL;
 459         int i;
 460
 461         DEBUG(10,("gpo_process_a_gpo: processing gpo %s (%s)\n",
 462                 gpo->name, gpo->display_name));
 463         if (extension_guid_filter) {
 464                 DEBUGADD(10,("gpo_process_a_gpo: using filter %s (%s)\n",
 465                         extension_guid_filter,
 466                         cse_gpo_guid_string_to_name(extension_guid_filter)));
 467         }
 468
 469         if (!gpo_get_gp_ext_from_gpo(mem_ctx, flags, gpo, &gp_ext)) {
 470                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 471         }
 472
 473         if (!gp_ext || !gp_ext->num_exts) {
 474                 if (flags & GPO_INFO_FLAG_VERBOSE) {
 475                         DEBUG(0,("gpo_process_a_gpo: "
 476                                 "no policies in %s (%s) for this extension\n",
 477                                 gpo->name, gpo->display_name));
 478                 }
 479                 return ADS_SUCCESS;
 480         }
 481
 482         for (i=0; i<gp_ext->num_exts; i++) {
 483
 484                 NTSTATUS ntstatus;
 485
 486                 if (extension_guid_filter &&
 487                     !strequal(extension_guid_filter,
 488                               gp_ext->extensions_guid[i])) {
 489                         continue;
 490                 }
 491
 492                 ntstatus = gpext_process_extension(ads, mem_ctx,
 493                                                    flags, token, root_key, gpo,
 494                                                    gp_ext->extensions_guid[i],
 495                                                    gp_ext->snapins_guid[i]);
 496                 if (!NT_STATUS_IS_OK(ntstatus)) {
 497                         ADS_ERROR_NT(ntstatus);
 498                 }
 499         }
 500
 501         return ADS_SUCCESS;
 502 }
 503
 504 /****************************************************************
 505 ****************************************************************/
 506
 507 static ADS_STATUS gpo_process_gpo_list_by_ext(ADS_STRUCT *ads,
 508                                               TALLOC_CTX *mem_ctx,
 509                                               const struct security_token *token,
 510                                               struct registry_key *root_key,
 511                                               struct GROUP_POLICY_OBJECT *gpo_list,
 512                                               const char *extensions_guid,
 513                                               uint32_t flags)
 514 {
 515         ADS_STATUS status;
 516         struct GROUP_POLICY_OBJECT *gpo;
 517
 518         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 519
 520                 if (gpo->link_type == GP_LINK_LOCAL) {
 521                         continue;
 522                 }
 523
 524
 525                 /* FIXME: we need to pass down the *list* down to the
 526                  * extension, otherwise we cannot store the e.g. the *list* of
 527                  * logon-scripts correctly (for more then one GPO) */
 528
 529                 status = gpo_process_a_gpo(ads, mem_ctx, token, root_key,
 530                                            gpo, extensions_guid, flags);
 531
 532                 if (!ADS_ERR_OK(status)) {
 533                         DEBUG(0,("failed to process gpo by ext: %s\n",
 534                                 ads_errstr(status)));
 535                         return status;
 536                 }
 537         }
 538
 539         return ADS_SUCCESS;
 540 }
 541
 542 /****************************************************************
 543 ****************************************************************/
 544
 545 ADS_STATUS gpo_process_gpo_list(ADS_STRUCT *ads,
 546                                 TALLOC_CTX *mem_ctx,
 547                                 const struct security_token *token,
 548                                 struct GROUP_POLICY_OBJECT *gpo_list,
 549                                 const char *extensions_guid_filter,
 550                                 uint32_t flags)
 551 {
 552         ADS_STATUS status = ADS_SUCCESS;
 553         struct gp_extension *gp_ext_list = NULL;
 554         struct gp_extension *gp_ext = NULL;
 555         struct registry_key *root_key = NULL;
 556         struct gp_registry_context *reg_ctx = NULL;
 557 #if 0
 558         WERROR werr;
 559 #endif
 560         status = ADS_ERROR_NT(init_gp_extensions(mem_ctx));
 561         if (!ADS_ERR_OK(status)) {
 562                 return status;
 563         }
 564
 565         gp_ext_list = get_gp_extension_list();
 566         if (!gp_ext_list) {
 567                 return ADS_ERROR_NT(NT_STATUS_DLL_INIT_FAILED);
 568         }
 569 /* FIXME Needs to be replaced with new patchfile_preg calls */
 570 #if 0
 571         /* get the key here */
 572         if (flags & GPO_LIST_FLAG_MACHINE) {
 573                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKLM, REG_KEY_WRITE,
 574                                        get_system_token(),
 575                                        &reg_ctx);
 576         } else {
 577                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
 578                                        token,
 579                                        &reg_ctx);
 580         }
 581         if (!W_ERROR_IS_OK(werr)) {
 582                 talloc_free(reg_ctx);
 583                 return ADS_ERROR_NT(werror_to_ntstatus(werr));
 584         }
 585 #endif
 586
 587         root_key = reg_ctx->curr_key;
 588
 589         for (gp_ext = gp_ext_list; gp_ext; gp_ext = gp_ext->next) {
 590
 591                 const char *guid_str = NULL;
 592
 593                 guid_str = GUID_string(mem_ctx, gp_ext->guid);
 594                 if (!guid_str) {
 595                         status = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 596                         goto done;
 597                 }
 598
 599                 if (extensions_guid_filter &&
 600                     (!strequal(guid_str, extensions_guid_filter)))  {
 601                         continue;
 602                 }
 603
 604                 DEBUG(0,("-------------------------------------------------\n"));
 605                 DEBUG(0,("gpo_process_gpo_list: processing ext: %s {%s}\n",
 606                         gp_ext->name, guid_str));
 607
 608
 609                 status = gpo_process_gpo_list_by_ext(ads, mem_ctx, token,
 610                                                      root_key, gpo_list,
 611                                                      guid_str, flags);
 612                 if (!ADS_ERR_OK(status)) {
 613                         goto done;
 614                 }
 615         }
 616
 617  done:
 618         talloc_free(reg_ctx);
 619         talloc_free(root_key);
 620         free_gp_extensions();
 621
 622         return status;
 623 }
 624
 625
 626 /****************************************************************
 627  check wether the version number in a GROUP_POLICY_OBJECT match those of the
 628  locally stored version. If not, fetch the required policy via CIFS
 629 ****************************************************************/
 630
 631 NTSTATUS check_refresh_gpo(ADS_STRUCT *ads,
 632                            TALLOC_CTX *mem_ctx,
 633                            const char *cache_dir,
 634                            struct loadparm_context *lp_ctx,
 635                            uint32_t flags,
 636                            struct GROUP_POLICY_OBJECT *gpo)
 637 {
 638         NTSTATUS result;
 639         char *server = NULL;
 640         char *share = NULL;
 641         char *nt_path = NULL;
 642         char *unix_path = NULL;
 643         uint32_t sysvol_gpt_version = 0;
 644         char *display_name = NULL;
 645
 646         result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
 647                                          &server, &share, &nt_path, &unix_path);
 648
 649         if (!NT_STATUS_IS_OK(result)) {
 650                 goto out;
 651         }
 652
 653         result = gpo_get_sysvol_gpt_version(mem_ctx,
 654                                             unix_path,
 655                                             &sysvol_gpt_version,
 656                                             &display_name);
 657         if (!NT_STATUS_IS_OK(result) &&
 658             !NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_FILE)) {
 659                 DEBUG(10,("check_refresh_gpo: "
 660                         "failed to get local gpt version: %s\n",
 661                         nt_errstr(result)));
 662                 goto out;
 663         }
 664
 665         DEBUG(10,("check_refresh_gpo: versions gpo %d sysvol %d\n",
 666                 gpo->version, sysvol_gpt_version));
 667
 668         /* FIXME: handle GPO_INFO_FLAG_FORCED_REFRESH from flags */
 669
 670         while (gpo->version > sysvol_gpt_version) {
 671
 672                 DEBUG(1,("check_refresh_gpo: need to refresh GPO\n"));
 673
 674                 result = gpo_fetch_files(mem_ctx, ads, lp_ctx, cache_dir, gpo);
 675                 if (!NT_STATUS_IS_OK(result)) {
 676                         goto out;
 677                 }
 678
 679                 result = gpo_get_sysvol_gpt_version(mem_ctx,
 680                                                     unix_path,
 681                                                     &sysvol_gpt_version,
 682                                                     &display_name);
 683                 if (!NT_STATUS_IS_OK(result)) {
 684                         DEBUG(10,("check_refresh_gpo: "
 685                                 "failed to get local gpt version: %s\n",
 686                                 nt_errstr(result)));
 687                         goto out;
 688                 }
 689
 690                 if (gpo->version == sysvol_gpt_version) {
 691                         break;
 692                 }
 693         }
 694
 695         DEBUG(10,("Name:\t\t\t%s (%s)\n", gpo->display_name, gpo->name));
 696         DEBUGADD(10,("sysvol GPT version:\t%d (user: %d, machine: %d)\n",
 697                 sysvol_gpt_version,
 698                 GPO_VERSION_USER(sysvol_gpt_version),
 699                 GPO_VERSION_MACHINE(sysvol_gpt_version)));
 700         DEBUGADD(10,("LDAP GPO version:\t%d (user: %d, machine: %d)\n",
 701                 gpo->version,
 702                 GPO_VERSION_USER(gpo->version),
 703                 GPO_VERSION_MACHINE(gpo->version)));
 704         DEBUGADD(10,("LDAP GPO link:\t\t%s\n", gpo->link));
 705
 706         result = NT_STATUS_OK;
 707
 708  out:
 709         return result;
 710
 711 }
 712
 713 /****************************************************************
 714  check wether the version numbers in the gpo_list match the locally stored, if
 715  not, go and get each required GPO via CIFS
 716  ****************************************************************/
 717
 718 NTSTATUS check_refresh_gpo_list(ADS_STRUCT *ads,
 719                                 TALLOC_CTX *mem_ctx,
 720                                 const char *cache_dir,
 721                                 struct loadparm_context *lp_ctx,
 722                                 uint32_t flags,
 723                                 struct GROUP_POLICY_OBJECT *gpo_list)
 724 {
 725         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
 726         struct GROUP_POLICY_OBJECT *gpo;
 727
 728         if (!gpo_list) {
 729                 return NT_STATUS_INVALID_PARAMETER;
 730         }
 731
 732         for (gpo = gpo_list; gpo; gpo = gpo->next) {
 733
 734                 result = check_refresh_gpo(ads, mem_ctx, cache_dir, lp_ctx, flags, gpo);
 735                 if (!NT_STATUS_IS_OK(result)) {
 736                         goto out;
 737                 }
 738         }
 739
 740         result = NT_STATUS_OK;
 741
 742  out:
 743         /* FIXME close cli connection */
 744
 745         return result;
 746 }
 747
 748 /****************************************************************
 749 ****************************************************************/
 750
 751 NTSTATUS gpo_get_unix_path(TALLOC_CTX *mem_ctx,
 752                            const char *cache_dir,
 753                            struct GROUP_POLICY_OBJECT *gpo,
 754                            char **unix_path)
 755 {
 756         char *server, *share, *nt_path;
 757         return gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
 758                                        &server, &share, &nt_path, unix_path);
 759 }
 760
 761 /****************************************************************
 762 ****************************************************************/
 763
 764 char *gpo_flag_str(TALLOC_CTX *ctx, uint32_t flags)
 765 {
 766         char *str = NULL;
 767
 768         if (flags == 0) {
 769                 return NULL;
 770         }
 771
 772         if (flags & GPO_INFO_FLAG_SLOWLINK)
 773                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_SLOWLINK ");
 774         if (flags & GPO_INFO_FLAG_VERBOSE)
 775                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_VERBOSE ");
 776         if (flags & GPO_INFO_FLAG_SAFEMODE_BOOT)
 777                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_SAFEMODE_BOOT ");
 778         if (flags & GPO_INFO_FLAG_NOCHANGES)
 779                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_NOCHANGES ");
 780         if (flags & GPO_INFO_FLAG_MACHINE)
 781                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_MACHINE ");
 782         if (flags & GPO_INFO_FLAG_LOGRSOP_TRANSITION)
 783                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_LOGRSOP_TRANSITION ");
 784         if (flags & GPO_INFO_FLAG_LINKTRANSITION)
 785                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_LINKTRANSITION ");
 786         if (flags & GPO_INFO_FLAG_FORCED_REFRESH)
 787                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_FORCED_REFRESH ");
 788         if (flags & GPO_INFO_FLAG_BACKGROUND)
 789                 str = talloc_append_string(ctx, str, "GPO_INFO_FLAG_BACKGROUND ");
 790
 791         return str;
 792 }
 793
 794 /****************************************************************
 795 ****************************************************************/
 796
 797 NTSTATUS gp_find_file(TALLOC_CTX *mem_ctx,
 798                       uint32_t flags,
 799                       const char *filename,
 800                       const char *suffix,
 801                       const char **filename_out)
 802 {
 803         const char *tmp = NULL;
 804         struct stat sbuf;
 805         const char *path = NULL;
 806
 807         if (flags & GPO_LIST_FLAG_MACHINE) {
 808                 path = "Machine";
 809         } else {
 810                 path = "User";
 811         }
 812
 813         tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
 814                               path, suffix);
 815         NT_STATUS_HAVE_NO_MEMORY(tmp);
 816
 817         if (stat(tmp, &sbuf) == 0) {
 818                 *filename_out = tmp;
 819                 return NT_STATUS_OK;
 820         }
 821
 822         path = talloc_strdup_upper(mem_ctx, path);
 823         NT_STATUS_HAVE_NO_MEMORY(path);
 824
 825         tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
 826                               path, suffix);
 827         NT_STATUS_HAVE_NO_MEMORY(tmp);
 828
 829         if (stat(tmp, &sbuf) == 0) {
 830                 *filename_out = tmp;
 831                 return NT_STATUS_OK;
 832         }
 833
 834         return NT_STATUS_NO_SUCH_FILE;
 835 }
 836
 837 /****************************************************************
 838 ****************************************************************/
 839
 840 ADS_STATUS gp_get_machine_token(ADS_STRUCT *ads,
 841                                 TALLOC_CTX *mem_ctx,
 842                                 struct loadparm_context *lp_ctx,
 843                                 const char *dn,
 844                                 struct security_token **token)
 845 {
 846         struct security_token *ad_token = NULL;
 847         ADS_STATUS status;
 848 #if _SAMBA_BUILD_ == 4
 849         struct auth_session_info *info;
 850 #else
 851         NTSTATUS ntstatus;
 852 #endif
 853
 854 #ifndef HAVE_ADS
 855         return ADS_ERROR_NT(NT_STATUS_NOT_SUPPORTED);
 856 #endif
 857         status = ads_get_sid_token(ads, mem_ctx, dn, &ad_token);
 858         if (!ADS_ERR_OK(status)) {
 859                 return status;
 860         }
 861 #if _SAMBA_BUILD_ == 4
 862         info = system_session(mem_ctx, lp_ctx);
 863         *token = info->security_token;
 864 #else
 865         ntstatus = merge_nt_token(mem_ctx, ad_token, get_system_token(),
 866                                   token);
 867         if (!NT_STATUS_IS_OK(ntstatus)) {
 868                 return ADS_ERROR_NT(ntstatus);
 869         }
 870 #endif
 871         return ADS_SUCCESS;
 872 }