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 #include "../libgpo/gpo.h"
  23 #include "libgpo/gpo_proto.h"
  24 #include "registry.h"
  25
  26 #define GP_EXT_NAME "scripts"
  27
  28 #define KEY_GP_SCRIPTS "Software\\Policies\\Microsoft\\Windows\\System\\Scripts"
  29
  30 #define GP_SCRIPTS_INI "Scripts/scripts.ini"
  31
  32 #define GP_SCRIPTS_INI_STARTUP "Startup"
  33 #define GP_SCRIPTS_INI_SHUTDOWN "Shutdown"
  34 #define GP_SCRIPTS_INI_LOGON "Logon"
  35 #define GP_SCRIPTS_INI_LOGOFF "Logoff"
  36
  37 #define GP_SCRIPTS_SECTION_CMDLINE "cmdline"
  38 #define GP_SCRIPTS_SECTION_PARAMETERS "parameters"
  39
  40 #define GP_SCRIPTS_REG_VAL_SCRIPT "Script"
  41 #define GP_SCRIPTS_REG_VAL_PARAMETERS "Parameters"
  42 #define GP_SCRIPTS_REG_VAL_EXECTIME "ExecTime"
  43
  44 static TALLOC_CTX *ctx = NULL;
  45
  46 /****************************************************************
  47 ****************************************************************/
  48
  49 static NTSTATUS scripts_get_reg_config(TALLOC_CTX *mem_ctx,
  50                                        struct gp_extension_reg_info **reg_info)
  51 {
  52         NTSTATUS status;
  53         struct gp_extension_reg_info *info = NULL;
  54
  55         struct gp_extension_reg_table table[] = {
  56                 { "ProcessGroupPolicy", REG_SZ, "scripts_process_group_policy" },
  57                 { "NoGPOListChanges", REG_DWORD, "1" },
  58                 { "NoSlowLink", REG_DWORD, "1" },
  59                 { "NotifyLinkTransition", REG_DWORD, "1" },
  60                 { NULL, REG_NONE, NULL },
  61         };
  62
  63         info = TALLOC_ZERO_P(mem_ctx, struct gp_extension_reg_info);
  64         NT_STATUS_HAVE_NO_MEMORY(info);
  65
  66         status = gp_ext_info_add_entry(mem_ctx, GP_EXT_NAME,
  67                                        GP_EXT_GUID_SCRIPTS,
  68                                        table, info);
  69         NT_STATUS_NOT_OK_RETURN(status);
  70
  71         *reg_info = info;
  72
  73         return NT_STATUS_OK;
  74 }
  75
  76 /****************************************************************
  77 ****************************************************************/
  78
  79 static NTSTATUS generate_gp_registry_entry(TALLOC_CTX *mem_ctx,
  80                                            const char *key,
  81                                            const char *value,
  82                                            uint32_t data_type,
  83                                            const void *data_p,
  84                                            enum gp_reg_action action,
  85                                            struct gp_registry_entry **entry_out)
  86 {
  87         struct gp_registry_entry *entry = NULL;
  88         struct registry_value *data = NULL;
  89
  90         entry = TALLOC_ZERO_P(mem_ctx, struct gp_registry_entry);
  91         NT_STATUS_HAVE_NO_MEMORY(entry);
  92
  93         data = TALLOC_ZERO_P(mem_ctx, struct registry_value);
  94         NT_STATUS_HAVE_NO_MEMORY(data);
  95
  96         data->type = data_type;
  97         switch (data->type) {
  98                 case REG_QWORD:
  99                         data->v.qword = *(uint64_t *)data_p;
 100                         break;
 101                 case REG_SZ:
 102                         data->v.sz.str = talloc_strdup(mem_ctx, (char *)data_p);
 103                         data->v.sz.len = strlen(data->v.sz.str);
 104                         break;
 105                 default:
 106                         return NT_STATUS_NOT_SUPPORTED;
 107         }
 108
 109         entry->key = key;
 110         entry->data = data;
 111         entry->action = action;
 112         entry->value = talloc_strdup(mem_ctx, value);
 113         NT_STATUS_HAVE_NO_MEMORY(entry->value);
 114
 115         *entry_out = entry;
 116
 117         return NT_STATUS_OK;
 118 }
 119
 120 /****************************************************************
 121 ****************************************************************/
 122
 123 static NTSTATUS scripts_parse_ini_section(struct gp_inifile_context *ini_ctx,
 124                                           uint32_t flags,
 125                                           const char *section,
 126                                           struct gp_registry_entry **entries,
 127                                           size_t *num_entries)
 128 {
 129         NTSTATUS status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 130         NTSTATUS result;
 131         int i = 0;
 132
 133         while (1) {
 134
 135                 const char *key = NULL;
 136                 char *script = NULL;
 137                 const char *count = NULL;
 138                 char *parameters = NULL;
 139
 140                 count = talloc_asprintf(ini_ctx->mem_ctx, "%d", i);
 141                 NT_STATUS_HAVE_NO_MEMORY(count);
 142
 143                 key = talloc_asprintf(ini_ctx->mem_ctx, "%s:%s%s",
 144                                       section, count,
 145                                       GP_SCRIPTS_SECTION_CMDLINE);
 146                 NT_STATUS_HAVE_NO_MEMORY(key);
 147
 148                 result = gp_inifile_getstring(ini_ctx, key, &script);
 149                 if (!NT_STATUS_IS_OK(result)) {
 150                         break;
 151                 }
 152
 153                 key = talloc_asprintf(ini_ctx->mem_ctx, "%s:%s%s",
 154                                       section, count,
 155                                       GP_SCRIPTS_SECTION_PARAMETERS);
 156                 NT_STATUS_HAVE_NO_MEMORY(key);
 157
 158                 result = gp_inifile_getstring(ini_ctx, key, &parameters);
 159                 if (!NT_STATUS_IS_OK(result)) {
 160                         break;
 161                 }
 162
 163                 {
 164                         struct gp_registry_entry *entry = NULL;
 165                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 166                                                             count,
 167                                                             GP_SCRIPTS_REG_VAL_SCRIPT,
 168                                                             REG_SZ,
 169                                                             script,
 170                                                             GP_REG_ACTION_ADD_VALUE,
 171                                                             &entry);
 172                         NT_STATUS_NOT_OK_RETURN(status);
 173                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 174                                                             entry,
 175                                                             entries,
 176                                                             num_entries)) {
 177                                 return NT_STATUS_NO_MEMORY;
 178                         }
 179                 }
 180                 {
 181                         struct gp_registry_entry *entry = NULL;
 182                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 183                                                             count,
 184                                                             GP_SCRIPTS_REG_VAL_PARAMETERS,
 185                                                             REG_SZ,
 186                                                             parameters,
 187                                                             GP_REG_ACTION_ADD_VALUE,
 188                                                             &entry);
 189                         NT_STATUS_NOT_OK_RETURN(status);
 190                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 191                                                             entry,
 192                                                             entries,
 193                                                             num_entries)) {
 194                                 return NT_STATUS_NO_MEMORY;
 195                         }
 196                 }
 197                 {
 198                         struct gp_registry_entry *entry = NULL;
 199                         status = generate_gp_registry_entry(ini_ctx->mem_ctx,
 200                                                             count,
 201                                                             GP_SCRIPTS_REG_VAL_EXECTIME,
 202                                                             REG_QWORD,
 203                                                             0,
 204                                                             GP_REG_ACTION_ADD_VALUE,
 205                                                             &entry);
 206                         NT_STATUS_NOT_OK_RETURN(status);
 207                         if (!add_gp_registry_entry_to_array(ini_ctx->mem_ctx,
 208                                                             entry,
 209                                                             entries,
 210                                                             num_entries)) {
 211                                 return NT_STATUS_NO_MEMORY;
 212                         }
 213                 }
 214                 status = NT_STATUS_OK;
 215                 i++;
 216         }
 217
 218         return status;
 219 }
 220
 221 /****************************************************************
 222 ****************************************************************/
 223
 224 static WERROR scripts_store_reg_gpovals(TALLOC_CTX *mem_ctx,
 225                                         struct registry_key *key,
 226                                         struct GROUP_POLICY_OBJECT *gpo)
 227 {
 228         WERROR werr;
 229
 230         if (!key || !gpo) {
 231                 return WERR_INVALID_PARAM;
 232         }
 233
 234         werr = gp_store_reg_val_sz(mem_ctx, key, "DisplayName",
 235                 gpo->display_name);
 236         W_ERROR_NOT_OK_RETURN(werr);
 237
 238         werr = gp_store_reg_val_sz(mem_ctx, key, "FileSysPath",
 239                 gpo->file_sys_path);
 240         W_ERROR_NOT_OK_RETURN(werr);
 241
 242         werr = gp_store_reg_val_sz(mem_ctx, key, "GPO-ID",
 243                 gpo->ds_path);
 244         W_ERROR_NOT_OK_RETURN(werr);
 245
 246         werr = gp_store_reg_val_sz(mem_ctx, key, "GPOName",
 247                 gpo->name);
 248         W_ERROR_NOT_OK_RETURN(werr);
 249
 250         werr = gp_store_reg_val_sz(mem_ctx, key, "SOM-ID",
 251                 gpo->link);
 252         W_ERROR_NOT_OK_RETURN(werr);
 253
 254         return werr;
 255 }
 256
 257 /****************************************************************
 258 ****************************************************************/
 259
 260 static WERROR scripts_apply(TALLOC_CTX *mem_ctx,
 261                             const struct nt_user_token *token,
 262                             struct registry_key *root_key,
 263                             uint32_t flags,
 264                             const char *section,
 265                             struct GROUP_POLICY_OBJECT *gpo,
 266                             struct gp_registry_entry *entries,
 267                             size_t num_entries)
 268 {
 269         struct gp_registry_context *reg_ctx = NULL;
 270         WERROR werr;
 271         size_t i;
 272         const char *keystr = NULL;
 273         int count = 0;
 274
 275         if (num_entries == 0) {
 276                 return WERR_OK;
 277         }
 278
 279 #if 0
 280         if (flags & GPO_INFO_FLAG_MACHINE) {
 281                 struct nt_user_token *tmp_token;
 282
 283                 tmp_token = registry_create_system_token(mem_ctx);
 284                 W_ERROR_HAVE_NO_MEMORY(tmp_token);
 285
 286                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKLM, REG_KEY_WRITE,
 287                                        tmp_token,
 288                                        &reg_ctx);
 289         } else {
 290                 werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
 291                                        token,
 292                                        &reg_ctx);
 293         }
 294         W_ERROR_NOT_OK_RETURN(werr);
 295 #endif
 296
 297         keystr = talloc_asprintf(mem_ctx, "%s\\%s\\%d", KEY_GP_SCRIPTS,
 298                                  section, count++);
 299         W_ERROR_HAVE_NO_MEMORY(keystr);
 300
 301         reg_deletekey_recursive(mem_ctx, root_key, keystr);
 302
 303         werr = gp_store_reg_subkey(mem_ctx, keystr,
 304                                    root_key, &root_key);
 305         if (!W_ERROR_IS_OK(werr)) {
 306                 goto done;
 307         }
 308
 309         werr = scripts_store_reg_gpovals(mem_ctx, root_key, gpo);
 310         if (!W_ERROR_IS_OK(werr)) {
 311                 goto done;
 312         }
 313
 314         for (i=0; i<num_entries; i++) {
 315
 316                 werr = reg_apply_registry_entry(mem_ctx, root_key, reg_ctx,
 317                                                 &(entries)[i],
 318                                                 token, flags);
 319                 if (!W_ERROR_IS_OK(werr)) {
 320                         DEBUG(0,("failed to apply registry: %s\n",
 321                                 win_errstr(werr)));
 322                         goto done;
 323                 }
 324         }
 325
 326  done:
 327         gp_free_reg_ctx(reg_ctx);
 328         return werr;
 329 }
 330
 331 /****************************************************************
 332 ****************************************************************/
 333
 334 static NTSTATUS scripts_process_group_policy(ADS_STRUCT *ads,
 335                                              TALLOC_CTX *mem_ctx,
 336                                              uint32_t flags,
 337                                              struct registry_key *root_key,
 338                                              const struct nt_user_token *token,
 339                                              struct GROUP_POLICY_OBJECT *gpo,
 340                                              const char *extension_guid,
 341                                              const char *snapin_guid)
 342 {
 343         NTSTATUS status;
 344         WERROR werr;
 345         int i = 0;
 346         char *unix_path = NULL;
 347         struct gp_inifile_context *ini_ctx = NULL;
 348         struct gp_registry_entry *entries = NULL;
 349         size_t num_entries = 0;
 350         const char *list[] = {
 351                 GP_SCRIPTS_INI_STARTUP,
 352                 GP_SCRIPTS_INI_SHUTDOWN,
 353                 GP_SCRIPTS_INI_LOGON,
 354                 GP_SCRIPTS_INI_LOGOFF
 355         };
 356
 357         debug_gpext_header(0, "scripts_process_group_policy", flags, gpo,
 358                            extension_guid, snapin_guid);
 359
 360         status = gpo_get_unix_path(mem_ctx, cache_path(GPO_CACHE_DIR), gpo, &unix_path);
 361         NT_STATUS_NOT_OK_RETURN(status);
 362
 363         status = gp_inifile_init_context(mem_ctx, flags, unix_path,
 364                                          GP_SCRIPTS_INI, &ini_ctx);
 365         NT_STATUS_NOT_OK_RETURN(status);
 366
 367         for (i = 0; i < ARRAY_SIZE(list); i++) {
 368
 369                 TALLOC_FREE(entries);
 370                 num_entries = 0;
 371
 372                 status = scripts_parse_ini_section(ini_ctx, flags, list[i],
 373                                                    &entries, &num_entries);
 374                 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
 375                         continue;
 376                 }
 377
 378                 if (!NT_STATUS_IS_OK(status)) {
 379                         return status;
 380                 }
 381
 382                 dump_reg_entries(flags, "READ", entries, num_entries);
 383
 384                 werr = scripts_apply(ini_ctx->mem_ctx, token, root_key,
 385                                      flags, list[i], gpo, entries, num_entries);
 386                 if (!W_ERROR_IS_OK(werr)) {
 387                         continue; /* FIXME: finally fix storing emtpy strings and REG_QWORD! */
 388                         TALLOC_FREE(ini_ctx);
 389                         return werror_to_ntstatus(werr);
 390                 }
 391         }
 392
 393         TALLOC_FREE(ini_ctx);
 394         return NT_STATUS_OK;
 395 }
 396
 397 /****************************************************************
 398 ****************************************************************/
 399
 400 static NTSTATUS scripts_initialize(TALLOC_CTX *mem_ctx)
 401 {
 402         return NT_STATUS_OK;
 403 }
 404
 405 /****************************************************************
 406 ****************************************************************/
 407
 408 static NTSTATUS scripts_shutdown(void)
 409 {
 410         NTSTATUS status;
 411
 412         status = unregister_gp_extension(GP_EXT_NAME);
 413         if (NT_STATUS_IS_OK(status)) {
 414                 return status;
 415         }
 416
 417         TALLOC_FREE(ctx);
 418
 419         return NT_STATUS_OK;
 420 }
 421
 422 /****************************************************************
 423 ****************************************************************/
 424
 425 static struct gp_extension_methods scripts_methods = {
 426         .initialize             = scripts_initialize,
 427         .process_group_policy   = scripts_process_group_policy,
 428         .get_reg_config         = scripts_get_reg_config,
 429         .shutdown               = scripts_shutdown
 430 };
 431
 432 /****************************************************************
 433 ****************************************************************/
 434
 435 NTSTATUS gpext_scripts_init(void)
 436 {
 437         NTSTATUS status;
 438
 439         ctx = talloc_init("gpext_scripts_init");
 440         NT_STATUS_HAVE_NO_MEMORY(ctx);
 441
 442         status = register_gp_extension(ctx, SMB_GPEXT_INTERFACE_VERSION,
 443                                        GP_EXT_NAME, GP_EXT_GUID_SCRIPTS,
 444                                        &scripts_methods);
 445         if (!NT_STATUS_IS_OK(status)) {
 446                 TALLOC_FREE(ctx);
 447         }
 448
 449         return status;
 450 }