source3/libgpo/gpext/scripts.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Support
   4  *  Copyright (C) Guenther Deschner 2007
   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
  20 #include "includes.h"
  21 #include "libgpo/gpo_ini.h"
  22
  23 #define GP_EXT_NAME "scripts"
  24
  25 #define KEY_GP_SCRIPTS "Software\\Policies\\Microsoft\\Windows\\System\\Scripts"
  26
  27 #define GP_SCRIPTS_INI "Scripts/scripts.ini"
  28
  29 #define GP_SCRIPTS_INI_STARTUP "Startup"
  30 #define GP_SCRIPTS_INI_SHUTDOWN "Shutdown"
  31 #define GP_SCRIPTS_INI_LOGON "Logon"
  32 #define GP_SCRIPTS_INI_LOGOFF "Logoff"
  33
  34 #define GP_SCRIPTS_SECTION_CMDLINE "cmdline"
  35 #define GP_SCRIPTS_SECTION_PARAMETERS "parameters"
  36
  37 #define GP_SCRIPTS_REG_VAL_SCRIPT "Script"
  38 #define GP_SCRIPTS_REG_VAL_PARAMETERS "Parameters"
  39 #define GP_SCRIPTS_REG_VAL_EXECTIME "ExecTime"
  40
  41 static TALLOC_CTX *ctx = NULL;
  42
  43 /****************************************************************
  44 ****************************************************************/
  45
  46 static NTSTATUS scripts_get_reg_config(TALLOC_CTX *mem_ctx,
  47                                        struct gp_extension_reg_info **reg_info)
  48 {
  49         NTSTATUS status;
  50         struct gp_extension_reg_info *info = NULL;
  51
  52         struct gp_extension_reg_table table[] = {
  53                 { "ProcessGroupPolicy", REG_SZ, "scripts_process_group_policy" },
  54                 { "NoGPOListChanges", REG_DWORD, "1" },
  55                 { "NoSlowLink", REG_DWORD, "1" },
  56                 { "NotifyLinkTransition", REG_DWORD, "1" },
  57                 { NULL, REG_NONE, NULL },
  58         };
  59
  60         info = TALLOC_ZERO_P(mem_ctx, struct gp_extension_reg_info);
  61         NT_STATUS_HAVE_NO_MEMORY(info);
  62
  63         status = gp_ext_info_add_entry(mem_ctx, GP_EXT_NAME,
  64                                        GP_EXT_GUID_SCRIPTS,
  65                                        table, info);
  66         NT_STATUS_NOT_OK_RETURN(status);
  67
  68         *reg_info = info;
  69
  70         return NT_STATUS_OK;
  71 }
  72
  73 /****************************************************************
  74 ****************************************************************/
  75
  76 static NTSTATUS generate_gp_registry_entry(TALLOC_CTX *mem_ctx,
  77                                            const char *key,
  78                                            const char *value,
  79                                            uint32_t data_type,
  80                                            const void *data_p,
  81                                            enum gp_reg_action action,
  82                                            struct gp_registry_entry **entry_out)
  83 {
  84         struct gp_registry_entry *entry = NULL;
  85         struct registry_value *data = NULL;
  86
  87         entry = TALLOC_ZERO_P(mem_ctx, struct gp_registry_entry);
  88         NT_STATUS_HAVE_NO_MEMORY(entry);
  89
  90         data = TALLOC_ZERO_P(mem_ctx, struct registry_value);
  91         NT_STATUS_HAVE_NO_MEMORY(data);
  92
  93         data->type = data_type;
  94         switch (data->type) {
  95                 case REG_QWORD:
  96                         data->v.qword = *(uint64_t *)data_p;
  97                         break;
  98                 case REG_SZ:
  99                         data->v.sz.str = talloc_strdup(mem_ctx, (char *)data_p);
 100                         data->v.sz.len = strlen(data->v.sz.str);
 101                         break;
 102                 default:
 103                         return NT_STATUS_NOT_SUPPORTED;
 104         }
 105
 106         entry->key = key;
 107         entry->data = data;
 108         entry->action = action;
 109         entry->value = talloc_strdup(mem_ctx, value);
 110         NT_STATUS_HAVE_NO_MEMORY(entry->value);
 111
 112         *entry_out = entry;
 113
 114         return NT_STATUS_OK;
 115 }
 116
 117 /****************************************************************
 118 ****************************************************************/
 119
 120 static NTSTATUS scripts_parse_ini_section(struct gp_inifile_context *ini_ctx,
 121                                           uint32_t flags,
 122                                           const char *section,
 123                                           struct gp_registry_entry **entries,
 124                                           size_t *num_entries)
 125 {
 126         NTSTATUS status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 127         NTSTATUS result;
 128         int i = 0;
 129
 130         while (1) {
 131
 132                 const char *key = NULL;
 133                 char *script = NULL;
 134                 const char *count = NULL;
 135                 char *parameters = NULL;
 136
 137                 count = talloc_asprintf(ini_ctx->mem_ctx, "%d", i);
 138                 NT_STATUS_HAVE_NO_MEMORY(count);
 139
 140                 key = talloc_asprintf(ini_ctx->mem_ctx, "%s:%s%s",
 141                                       section, count,
 142                                       GP_SCRIPTS_SECTION_CMDLINE);
 143                 NT_STATUS_HAVE_NO_MEMORY(key);
 144
 145                 result = gp_inifile_getstring(ini_ctx, key, &script);
 146                 if (!NT_STATUS_IS_OK(result)) {
 147                         break;
 148                 }
 149
 150                 key = talloc_asprintf(ini_ctx->mem_ctx, "%s:%s%s",
 151                                       section, count,
 152                                       GP_SCRIPTS_SECTION_PARAMETERS);
 153                 NT_STATUS_HAVE_NO_MEMORY(key);
 154
 155                 result = gp_inifile_getstring(ini_ctx, key, &parameters);
 156                 if (!NT_STATUS_IS_OK(result)) {
 157                         break;
 158                 }
 159
 160                 {
 161                         struct gp_registry_entry *entry = NULL;
 162                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 163                                                             count,
 164                                                             GP_SCRIPTS_REG_VAL_SCRIPT,
 165                                                             REG_SZ,
 166                                                             script,
 167                                                             GP_REG_ACTION_ADD_VALUE,
 168                                                             &entry);
 169                         NT_STATUS_NOT_OK_RETURN(status);
 170                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 171                                                             entry,
 172                                                             entries,
 173                                                             num_entries)) {
 174                                 return NT_STATUS_NO_MEMORY;
 175                         }
 176                 }
 177                 {
 178                         struct gp_registry_entry *entry = NULL;
 179                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 180                                                             count,
 181                                                             GP_SCRIPTS_REG_VAL_PARAMETERS,
 182                                                             REG_SZ,
 183                                                             parameters,
 184                                                             GP_REG_ACTION_ADD_VALUE,
 185                                                             &entry);
 186                         NT_STATUS_NOT_OK_RETURN(status);
 187                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 188                                                             entry,
 189                                                             entries,
 190                                                             num_entries)) {
 191                                 return NT_STATUS_NO_MEMORY;
 192                         }
 193                 }
 194                 {
 195                         struct gp_registry_entry *entry = NULL;
 196                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 197                                                             count,
 198                                                             GP_SCRIPTS_REG_VAL_EXECTIME,
 199                                                             REG_QWORD,
 200                                                             0,
 201                                                             GP_REG_ACTION_ADD_VALUE,
 202                                                             &entry);
 203                         NT_STATUS_NOT_OK_RETURN(status);
 204                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 205                                                             entry,
 206                                                             entries,
 207                                                             num_entries)) {
 208                                 return NT_STATUS_NO_MEMORY;
 209                         }
 210                 }
 211                 status = NT_STATUS_OK;
 212                 i++;
 213         }
 214
 215         return status;
 216 }
 217
 218 /****************************************************************
 219 ****************************************************************/
 220
 221 static WERROR scripts_store_reg_gpovals(TALLOC_CTX *mem_ctx,
 222                                         struct registry_key *key,
 223                                         struct GROUP_POLICY_OBJECT *gpo)
 224 {
 225         WERROR werr;
 226
 227         if (!key || !gpo) {
 228                 return WERR_INVALID_PARAM;
 229         }
 230
 231         werr = gp_store_reg_val_sz(mem_ctx, key, "DisplayName",
 232                 gpo->display_name);
 233         W_ERROR_NOT_OK_RETURN(werr);
 234
 235         werr = gp_store_reg_val_sz(mem_ctx, key, "FileSysPath",
 236                 gpo->file_sys_path);
 237         W_ERROR_NOT_OK_RETURN(werr);
 238
 239         werr = gp_store_reg_val_sz(mem_ctx, key, "GPO-ID",
 240                 gpo->ds_path);
 241         W_ERROR_NOT_OK_RETURN(werr);
 242
 243         werr = gp_store_reg_val_sz(mem_ctx, key, "GPOName",
 244                 gpo->name);
 245         W_ERROR_NOT_OK_RETURN(werr);
 246
 247         werr = gp_store_reg_val_sz(mem_ctx, key, "SOM-ID",
 248                 gpo->link);
 249         W_ERROR_NOT_OK_RETURN(werr);
 250
 251         return werr;
 252 }
 253
 254 /****************************************************************
 255 ****************************************************************/
 256
 257 static WERROR scripts_apply(TALLOC_CTX *mem_ctx,
 258                             const struct nt_user_token *token,
 259                             struct registry_key *root_key,
 260                             uint32_t flags,
 261                             const char *section,
 262                             struct GROUP_POLICY_OBJECT *gpo,
 263                             struct gp_registry_entry *entries,
 264                             size_t num_entries)
 265 {
 266         struct gp_registry_context *reg_ctx = NULL;
 267         WERROR werr;
 268         size_t i;
 269         const char *keystr = NULL;
 270         int count = 0;
 271
 272         if (num_entries == 0) {
 273                 return WERR_OK;
 274         }
 275
 276 #if 0
 277         if (flags & GPO_INFO_FLAG_MACHINE) {
 278                 struct nt_user_token *tmp_token;
 279
 280                 tmp_token = registry_create_system_token(mem_ctx);
 281                 W_ERROR_HAVE_NO_MEMORY(tmp_token);
 282
 283                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKLM, REG_KEY_WRITE,
 284                                        tmp_token,
 285                                        &reg_ctx);
 286         } else {
 287                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
 288                                        token,
 289                                        &reg_ctx);
 290         }
 291         W_ERROR_NOT_OK_RETURN(werr);
 292 #endif
 293
 294         keystr = talloc_asprintf(mem_ctx, "%s\\%s\\%d", KEY_GP_SCRIPTS,
 295                                  section, count++);
 296         W_ERROR_HAVE_NO_MEMORY(keystr);
 297
 298         reg_deletekey_recursive(mem_ctx, root_key, keystr);
 299
 300         werr = gp_store_reg_subkey(mem_ctx, keystr,
 301                                    root_key, &root_key);
 302         if (!W_ERROR_IS_OK(werr)) {
 303                 goto done;
 304         }
 305
 306         werr = scripts_store_reg_gpovals(mem_ctx, root_key, gpo);
 307         if (!W_ERROR_IS_OK(werr)) {
 308                 goto done;
 309         }
 310
 311         for (i=0; i<num_entries; i++) {
 312
 313                 werr = reg_apply_registry_entry(mem_ctx, root_key, reg_ctx,
 314                                                 &(entries)[i],
 315                                                 token, flags);
 316                 if (!W_ERROR_IS_OK(werr)) {
 317                         DEBUG(0,("failed to apply registry: %s\n",
 318                                 win_errstr(werr)));
 319                         goto done;
 320                 }
 321         }
 322
 323  done:
 324         gp_free_reg_ctx(reg_ctx);
 325         return werr;
 326 }
 327
 328 /****************************************************************
 329 ****************************************************************/
 330
 331 static NTSTATUS scripts_process_group_policy(ADS_STRUCT *ads,
 332                                              TALLOC_CTX *mem_ctx,
 333                                              uint32_t flags,
 334                                              struct registry_key *root_key,
 335                                              const struct nt_user_token *token,
 336                                              struct GROUP_POLICY_OBJECT *gpo,
 337                                              const char *extension_guid,
 338                                              const char *snapin_guid)
 339 {
 340         NTSTATUS status;
 341         WERROR werr;
 342         int i = 0;
 343         char *unix_path = NULL;
 344         struct gp_inifile_context *ini_ctx = NULL;
 345         struct gp_registry_entry *entries = NULL;
 346         size_t num_entries = 0;
 347         const char *list[] = {
 348                 GP_SCRIPTS_INI_STARTUP,
 349                 GP_SCRIPTS_INI_SHUTDOWN,
 350                 GP_SCRIPTS_INI_LOGON,
 351                 GP_SCRIPTS_INI_LOGOFF
 352         };
 353
 354         debug_gpext_header(0, "scripts_process_group_policy", flags, gpo,
 355                            extension_guid, snapin_guid);
 356
 357         status = gpo_get_unix_path(mem_ctx, cache_path(GPO_CACHE_DIR), gpo, &unix_path);
 358         NT_STATUS_NOT_OK_RETURN(status);
 359
 360         status = gp_inifile_init_context(mem_ctx, flags, unix_path,
 361                                          GP_SCRIPTS_INI, &ini_ctx);
 362         NT_STATUS_NOT_OK_RETURN(status);
 363
 364         for (i = 0; i < ARRAY_SIZE(list); i++) {
 365
 366                 TALLOC_FREE(entries);
 367                 num_entries = 0;
 368
 369                 status = scripts_parse_ini_section(ini_ctx, flags, list[i],
 370                                                    &entries, &num_entries);
 371                 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
 372                         continue;
 373                 }
 374
 375                 if (!NT_STATUS_IS_OK(status)) {
 376                         return status;
 377                 }
 378
 379                 dump_reg_entries(flags, "READ", entries, num_entries);
 380
 381                 werr = scripts_apply(ini_ctx->mem_ctx, token, root_key,
 382                                      flags, list[i], gpo, entries, num_entries);
 383                 if (!W_ERROR_IS_OK(werr)) {
 384                         continue; /* FIXME: finally fix storing emtpy strings and REG_QWORD! */
 385                         TALLOC_FREE(ini_ctx);
 386                         return werror_to_ntstatus(werr);
 387                 }
 388         }
 389
 390         TALLOC_FREE(ini_ctx);
 391         return NT_STATUS_OK;
 392 }
 393
 394 /****************************************************************
 395 ****************************************************************/
 396
 397 static NTSTATUS scripts_initialize(TALLOC_CTX *mem_ctx)
 398 {
 399         return NT_STATUS_OK;
 400 }
 401
 402 /****************************************************************
 403 ****************************************************************/
 404
 405 static NTSTATUS scripts_shutdown(void)
 406 {
 407         NTSTATUS status;
 408
 409         status = unregister_gp_extension(GP_EXT_NAME);
 410         if (NT_STATUS_IS_OK(status)) {
 411                 return status;
 412         }
 413
 414         TALLOC_FREE(ctx);
 415
 416         return NT_STATUS_OK;
 417 }
 418
 419 /****************************************************************
 420 ****************************************************************/
 421
 422 static struct gp_extension_methods scripts_methods = {
 423         .initialize             = scripts_initialize,
 424         .process_group_policy   = scripts_process_group_policy,
 425         .get_reg_config         = scripts_get_reg_config,
 426         .shutdown               = scripts_shutdown
 427 };
 428
 429 /****************************************************************
 430 ****************************************************************/
 431
 432 NTSTATUS gpext_scripts_init(void)
 433 {
 434         NTSTATUS status;
 435
 436         ctx = talloc_init("gpext_scripts_init");
 437         NT_STATUS_HAVE_NO_MEMORY(ctx);
 438
 439         status = register_gp_extension(ctx, SMB_GPEXT_INTERFACE_VERSION,
 440                                        GP_EXT_NAME, GP_EXT_GUID_SCRIPTS,
 441                                        &scripts_methods);
 442         if (!NT_STATUS_IS_OK(status)) {
 443                 TALLOC_FREE(ctx);
 444         }
 445
 446         return status;
 447 }