+++ /dev/null
-/*
- * Unix SMB/CIFS implementation.
- * Group Policy Support
- * Copyright (C) Guenther Deschner 2007-2008
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "includes.h"
-
-static struct gp_extension *extensions = NULL;
-
-/****************************************************************
-****************************************************************/
-
-struct gp_extension *get_gp_extension_list(void)
-{
- return extensions;
-}
-
-/****************************************************************
-****************************************************************/
-
-/* see http://support.microsoft.com/kb/216358/en-us/ for more info */
-
-struct gp_extension_reg_table gpext_reg_vals[] = {
- { "DllName", REG_EXPAND_SZ },
- { "ProcessGroupPolicy", REG_SZ },
- { "NoMachinePolicy", REG_DWORD },
- { "NoUserPolicy", REG_DWORD },
- { "NoSlowLink", REG_DWORD },
- { "NoBackgroundPolicy", REG_DWORD },
- { "NoGPOListChanges", REG_DWORD },
- { "PerUserLocalSettings", REG_DWORD },
- { "RequiresSuccessfulRegistry", REG_DWORD },
- { "EnableAsynchronousProcessing", REG_DWORD },
- { "ExtensionDebugLevel", REG_DWORD },
- /* new */
- { "GenerateGroupPolicy", REG_SZ }, /* not supported on w2k */
- { "NotifyLinkTransition", REG_DWORD },
- { "ProcessGroupPolicyEx", REG_SZ }, /* not supported on w2k */
- { "ExtensionEventSource", REG_MULTI_SZ }, /* not supported on w2k */
- { "GenerateGroupPolicy", REG_SZ },
- { "MaxNoGPOListChangesInterval", REG_DWORD },
- { NULL, REG_NONE }
-};
-
-/****************************************************************
-****************************************************************/
-
-static struct gp_extension *get_extension_by_name(struct gp_extension *be,
- const char *name)
-{
- struct gp_extension *b;
-
- for (b = be; b; b = b->next) {
- if (strequal(b->name, name)) {
- return b;
- }
- }
-
- return NULL;
-}
-
-/****************************************************************
-****************************************************************/
-
-static struct gp_extension_methods *get_methods_by_name(struct gp_extension *be,
- const char *name)
-{
- struct gp_extension *b;
-
- for (b = be; b; b = b->next) {
- if (strequal(b->name, name)) {
- return b->methods;
- }
- }
-
- return NULL;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS unregister_gp_extension(const char *name)
-{
- struct gp_extension *ext;
-
- ext = get_extension_by_name(extensions, name);
- if (!ext) {
- return NT_STATUS_OK;
- }
-
- DLIST_REMOVE(extensions, ext);
- TALLOC_FREE(ext);
-
- DEBUG(2,("Successfully removed GP extension '%s'\n", name));
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS register_gp_extension(TALLOC_CTX *gpext_ctx,
- int version,
- const char *name,
- const char *guid,
- struct gp_extension_methods *methods)
-{
- struct gp_extension_methods *test;
- struct gp_extension *entry;
- NTSTATUS status;
-
- if (!gpext_ctx) {
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
-
- if ((version != SMB_GPEXT_INTERFACE_VERSION)) {
- DEBUG(0,("Failed to register gp extension.\n"
- "The module was compiled against "
- "SMB_GPEXT_INTERFACE_VERSION %d,\n"
- "current SMB_GPEXT_INTERFACE_VERSION is %d.\n"
- "Please recompile against the current "
- "version of samba!\n",
- version, SMB_GPEXT_INTERFACE_VERSION));
- return NT_STATUS_OBJECT_TYPE_MISMATCH;
- }
-
- if (!guid || !name || !name[0] || !methods) {
- DEBUG(0,("Called with NULL pointer or empty name!\n"));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- test = get_methods_by_name(extensions, name);
- if (test) {
- DEBUG(0,("GP extension module %s already registered!\n",
- name));
- return NT_STATUS_OBJECT_NAME_COLLISION;
- }
-
- entry = TALLOC_ZERO_P(gpext_ctx, struct gp_extension);
- NT_STATUS_HAVE_NO_MEMORY(entry);
-
- entry->name = talloc_strdup(gpext_ctx, name);
- NT_STATUS_HAVE_NO_MEMORY(entry->name);
-
- entry->guid = TALLOC_ZERO_P(gpext_ctx, struct GUID);
- NT_STATUS_HAVE_NO_MEMORY(entry->guid);
- status = GUID_from_string(guid, entry->guid);
- NT_STATUS_NOT_OK_RETURN(status);
-
- entry->methods = methods;
- DLIST_ADD(extensions, entry);
-
- DEBUG(2,("Successfully added GP extension '%s' %s\n",
- name, GUID_string2(gpext_ctx, entry->guid)));
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-static NTSTATUS gp_extension_init_module(TALLOC_CTX *mem_ctx,
- const char *name,
- struct gp_extension **gpext)
-{
- NTSTATUS status;
- struct gp_extension *ext = NULL;
-
- ext = TALLOC_ZERO_P(mem_ctx, struct gp_extension);
- NT_STATUS_HAVE_NO_MEMORY(gpext);
-
- ext->methods = get_methods_by_name(extensions, name);
- if (!ext->methods) {
-
- status = smb_probe_module(SAMBA_SUBSYSTEM_GPEXT,
- name);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
-
- ext->methods = get_methods_by_name(extensions, name);
- if (!ext->methods) {
- return NT_STATUS_DLL_INIT_FAILED;
- }
- }
-
- *gpext = ext;
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-static bool add_gp_extension_reg_entry_to_array(TALLOC_CTX *mem_ctx,
- struct gp_extension_reg_entry *entry,
- struct gp_extension_reg_entry **entries,
- size_t *num)
-{
- *entries = TALLOC_REALLOC_ARRAY(mem_ctx, *entries,
- struct gp_extension_reg_entry,
- (*num)+1);
- if (*entries == NULL) {
- *num = 0;
- return false;
- }
-
- (*entries)[*num].value = entry->value;
- (*entries)[*num].data = entry->data;
-
- *num += 1;
- return true;
-}
-
-/****************************************************************
-****************************************************************/
-
-static bool add_gp_extension_reg_info_entry_to_array(TALLOC_CTX *mem_ctx,
- struct gp_extension_reg_info_entry *entry,
- struct gp_extension_reg_info_entry **entries,
- size_t *num)
-{
- *entries = TALLOC_REALLOC_ARRAY(mem_ctx, *entries,
- struct gp_extension_reg_info_entry,
- (*num)+1);
- if (*entries == NULL) {
- *num = 0;
- return false;
- }
-
- (*entries)[*num].guid = entry->guid;
- (*entries)[*num].num_entries = entry->num_entries;
- (*entries)[*num].entries = entry->entries;
-
- *num += 1;
- return true;
-}
-
-/****************************************************************
-****************************************************************/
-
-static NTSTATUS gp_ext_info_add_reg(TALLOC_CTX *mem_ctx,
- struct gp_extension_reg_info_entry *entry,
- const char *value,
- enum winreg_Type type,
- const char *data_s)
-{
- struct gp_extension_reg_entry *reg_entry = NULL;
- struct registry_value *data = NULL;
-
- reg_entry = TALLOC_ZERO_P(mem_ctx, struct gp_extension_reg_entry);
- NT_STATUS_HAVE_NO_MEMORY(reg_entry);
-
- data = TALLOC_ZERO_P(mem_ctx, struct registry_value);
- NT_STATUS_HAVE_NO_MEMORY(data);
-
- data->type = type;
-
- switch (type) {
- case REG_SZ:
- case REG_EXPAND_SZ:
- data->v.sz.str = talloc_strdup(mem_ctx, data_s);
- NT_STATUS_HAVE_NO_MEMORY(data->v.sz.str);
- data->v.sz.len = strlen(data_s);
- break;
- case REG_DWORD:
- data->v.dword = atoi(data_s);
- break;
- default:
- return NT_STATUS_NOT_SUPPORTED;
- }
-
- reg_entry->value = value;
- reg_entry->data = data;
-
- if (!add_gp_extension_reg_entry_to_array(mem_ctx, reg_entry,
- &entry->entries,
- &entry->num_entries)) {
- return NT_STATUS_NO_MEMORY;
- }
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-static NTSTATUS gp_ext_info_add_reg_table(TALLOC_CTX *mem_ctx,
- const char *module,
- struct gp_extension_reg_info_entry *entry,
- struct gp_extension_reg_table *table)
-{
- NTSTATUS status;
- const char *module_name = NULL;
- int i;
-
- module_name = talloc_asprintf(mem_ctx, "%s.%s", module, shlib_ext());
- NT_STATUS_HAVE_NO_MEMORY(module_name);
-
- status = gp_ext_info_add_reg(mem_ctx, entry,
- "DllName", REG_EXPAND_SZ, module_name);
- NT_STATUS_NOT_OK_RETURN(status);
-
- for (i=0; table[i].val; i++) {
- status = gp_ext_info_add_reg(mem_ctx, entry,
- table[i].val,
- table[i].type,
- table[i].data);
- NT_STATUS_NOT_OK_RETURN(status);
- }
-
- return status;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS gp_ext_info_add_entry(TALLOC_CTX *mem_ctx,
- const char *module,
- const char *ext_guid,
- struct gp_extension_reg_table *table,
- struct gp_extension_reg_info *info)
-{
- NTSTATUS status;
- struct gp_extension_reg_info_entry *entry = NULL;
-
- entry = TALLOC_ZERO_P(mem_ctx, struct gp_extension_reg_info_entry);
- NT_STATUS_HAVE_NO_MEMORY(entry);
-
- status = GUID_from_string(ext_guid, &entry->guid);
- NT_STATUS_NOT_OK_RETURN(status);
-
- status = gp_ext_info_add_reg_table(mem_ctx, module, entry, table);
- NT_STATUS_NOT_OK_RETURN(status);
-
- if (!add_gp_extension_reg_info_entry_to_array(mem_ctx, entry,
- &info->entries,
- &info->num_entries)) {
- return NT_STATUS_NO_MEMORY;
- }
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-static bool gp_extension_reg_info_verify_entry(struct gp_extension_reg_entry *entry)
-{
- int i;
-
- for (i=0; gpext_reg_vals[i].val; i++) {
-
- if ((strequal(entry->value, gpext_reg_vals[i].val)) &&
- (entry->data->type == gpext_reg_vals[i].type)) {
- return true;
- }
- }
-
- return false;
-}
-
-/****************************************************************
-****************************************************************/
-
-static bool gp_extension_reg_info_verify(struct gp_extension_reg_info_entry *entry)
-{
- int i;
-
- for (i=0; i < entry->num_entries; i++) {
- if (!gp_extension_reg_info_verify_entry(&entry->entries[i])) {
- return false;
- }
- }
-
- return true;
-}
-
-/****************************************************************
-****************************************************************/
-
-static WERROR gp_extension_store_reg_vals(TALLOC_CTX *mem_ctx,
- struct registry_key *key,
- struct gp_extension_reg_info_entry *entry)
-{
- WERROR werr = WERR_OK;
- size_t i;
-
- for (i=0; i < entry->num_entries; i++) {
-
- werr = reg_setvalue(key,
- entry->entries[i].value,
- entry->entries[i].data);
- W_ERROR_NOT_OK_RETURN(werr);
- }
-
- return werr;
-}
-
-/****************************************************************
-****************************************************************/
-
-static WERROR gp_extension_store_reg_entry(TALLOC_CTX *mem_ctx,
- struct gp_registry_context *reg_ctx,
- struct gp_extension_reg_info_entry *entry)
-{
- WERROR werr;
- struct registry_key *key = NULL;
- const char *subkeyname = NULL;
-
- if (!gp_extension_reg_info_verify(entry)) {
- return WERR_INVALID_PARAM;
- }
-
- subkeyname = GUID_string2(mem_ctx, &entry->guid);
- W_ERROR_HAVE_NO_MEMORY(subkeyname);
-
- strupper_m(CONST_DISCARD(char *,subkeyname));
-
- werr = gp_store_reg_subkey(mem_ctx,
- subkeyname,
- reg_ctx->curr_key,
- &key);
- W_ERROR_NOT_OK_RETURN(werr);
-
- werr = gp_extension_store_reg_vals(mem_ctx,
- key,
- entry);
- W_ERROR_NOT_OK_RETURN(werr);
-
- return werr;
-}
-
-/****************************************************************
-****************************************************************/
-
-static WERROR gp_extension_store_reg(TALLOC_CTX *mem_ctx,
- struct gp_registry_context *reg_ctx,
- struct gp_extension_reg_info *info)
-{
- WERROR werr = WERR_OK;
- int i;
-
- if (!info) {
- return WERR_OK;
- }
-
- for (i=0; i < info->num_entries; i++) {
- werr = gp_extension_store_reg_entry(mem_ctx,
- reg_ctx,
- &info->entries[i]);
- W_ERROR_NOT_OK_RETURN(werr);
- }
-
- return werr;
-}
-
-/****************************************************************
-****************************************************************/
-
-static NTSTATUS gp_glob_ext_list(TALLOC_CTX *mem_ctx,
- const char ***ext_list,
- size_t *ext_list_len)
-{
- SMB_STRUCT_DIR *dir = NULL;
- SMB_STRUCT_DIRENT *dirent = NULL;
-
- dir = sys_opendir(lib_path(SAMBA_SUBSYSTEM_GPEXT));
- if (!dir) {
- return map_nt_error_from_unix(errno);
- }
-
- while ((dirent = sys_readdir(dir))) {
-
- fstring name; /* forgive me... */
- char *p;
-
- if ((strequal(dirent->d_name, ".")) ||
- (strequal(dirent->d_name, ".."))) {
- continue;
- }
-
- p = strrchr(dirent->d_name, '.');
- if (!p) {
- sys_closedir(dir);
- return NT_STATUS_NO_MEMORY;
- }
-
- if (!strcsequal(p+1, shlib_ext())) {
- DEBUG(10,("gp_glob_ext_list: not a *.so file: %s\n",
- dirent->d_name));
- continue;
- }
-
- fstrcpy(name, dirent->d_name);
- name[PTR_DIFF(p, dirent->d_name)] = 0;
-
- if (!add_string_to_array(mem_ctx, name, ext_list,
- (int *)ext_list_len)) {
- sys_closedir(dir);
- return NT_STATUS_NO_MEMORY;
- }
- }
-
- sys_closedir(dir);
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS shutdown_gp_extensions(void)
-{
- struct gp_extension *ext = NULL;
-
- for (ext = extensions; ext; ext = ext->next) {
- if (ext->methods && ext->methods->shutdown) {
- ext->methods->shutdown();
- }
- }
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS init_gp_extensions(TALLOC_CTX *mem_ctx)
-{
- NTSTATUS status;
- WERROR werr;
- int i = 0;
- const char **ext_array = NULL;
- size_t ext_array_len = 0;
- struct gp_extension *gpext = NULL;
- struct gp_registry_context *reg_ctx = NULL;
-
- if (get_gp_extension_list()) {
- return NT_STATUS_OK;
- }
-
- status = gp_glob_ext_list(mem_ctx, &ext_array, &ext_array_len);
- NT_STATUS_NOT_OK_RETURN(status);
-
- for (i=0; i<ext_array_len; i++) {
-
- struct gp_extension_reg_info *info = NULL;
-
- status = gp_extension_init_module(mem_ctx, ext_array[i],
- &gpext);
- if (!NT_STATUS_IS_OK(status)) {
- goto out;
- }
-
- if (gpext->methods->get_reg_config) {
-
- status = gpext->methods->initialize(mem_ctx);
- if (!NT_STATUS_IS_OK(status)) {
- gpext->methods->shutdown();
- goto out;
- }
-
- status = gpext->methods->get_reg_config(mem_ctx,
- &info);
- if (!NT_STATUS_IS_OK(status)) {
- gpext->methods->shutdown();
- goto out;
- }
-
- if (!reg_ctx) {
- struct nt_user_token *token;
-
- token = registry_create_system_token(mem_ctx);
- NT_STATUS_HAVE_NO_MEMORY(token);
-
- werr = gp_init_reg_ctx(mem_ctx,
- KEY_WINLOGON_GPEXT_PATH,
- REG_KEY_WRITE,
- token,
- ®_ctx);
- if (!W_ERROR_IS_OK(werr)) {
- status = werror_to_ntstatus(werr);
- gpext->methods->shutdown();
- goto out;
- }
- }
-
- werr = gp_extension_store_reg(mem_ctx, reg_ctx, info);
- if (!W_ERROR_IS_OK(werr)) {
- DEBUG(1,("gp_extension_store_reg failed: %s\n",
- dos_errstr(werr)));
- TALLOC_FREE(info);
- gpext->methods->shutdown();
- status = werror_to_ntstatus(werr);
- goto out;
- }
- TALLOC_FREE(info);
- }
-
- }
-
- out:
- TALLOC_FREE(reg_ctx);
-
- return status;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS free_gp_extensions(void)
-{
- struct gp_extension *ext, *ext_next = NULL;
-
- for (ext = extensions; ext; ext = ext_next) {
- ext_next = ext->next;
- DLIST_REMOVE(extensions, ext);
- TALLOC_FREE(ext);
- }
-
- extensions = NULL;
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-void debug_gpext_header(int lvl,
- const char *name,
- uint32_t flags,
- struct GROUP_POLICY_OBJECT *gpo,
- const char *extension_guid,
- const char *snapin_guid)
-{
- char *flags_str = NULL;
-
- DEBUG(lvl,("%s\n", name));
- DEBUGADD(lvl,("\tgpo: %s (%s)\n", gpo->name,
- gpo->display_name));
- DEBUGADD(lvl,("\tcse extension: %s (%s)\n", extension_guid,
- cse_gpo_guid_string_to_name(extension_guid)));
- DEBUGADD(lvl,("\tgplink: %s\n", gpo->link));
- DEBUGADD(lvl,("\tsnapin: %s (%s)\n", snapin_guid,
- cse_snapin_gpo_guid_string_to_name(snapin_guid)));
-
- flags_str = gpo_flag_str(flags);
- DEBUGADD(lvl,("\tflags: 0x%08x %s\n", flags, flags_str));
- SAFE_FREE(flags_str);
-}
-
-NTSTATUS process_gpo_list_with_extension(ADS_STRUCT *ads,
- TALLOC_CTX *mem_ctx,
- uint32_t flags,
- const struct nt_user_token *token,
- struct GROUP_POLICY_OBJECT *gpo_list,
- const char *extension_guid,
- const char *snapin_guid)
-{
- return NT_STATUS_OK;
-}
-
-/****************************************************************
-****************************************************************/
-
-NTSTATUS gpext_process_extension(ADS_STRUCT *ads,
- TALLOC_CTX *mem_ctx,
- uint32_t flags,
- const struct nt_user_token *token,
- struct registry_key *root_key,
- struct GROUP_POLICY_OBJECT *gpo,
- const char *extension_guid,
- const char *snapin_guid)
-{
- NTSTATUS status;
- struct gp_extension *ext = NULL;
- struct GUID guid;
- bool cse_found = false;
-
- status = init_gp_extensions(mem_ctx);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("init_gp_extensions failed: %s\n",
- nt_errstr(status)));
- return status;
- }
-
- status = GUID_from_string(extension_guid, &guid);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
-
- for (ext = extensions; ext; ext = ext->next) {
-
- if (GUID_equal(ext->guid, &guid)) {
- cse_found = true;
- break;
- }
- }
-
- if (!cse_found) {
- goto no_ext;
- }
-
- status = ext->methods->initialize(mem_ctx);
- NT_STATUS_NOT_OK_RETURN(status);
-
- status = ext->methods->process_group_policy(ads,
- mem_ctx,
- flags,
- root_key,
- token,
- gpo,
- extension_guid,
- snapin_guid);
- if (!NT_STATUS_IS_OK(status)) {
- ext->methods->shutdown();
- }
-
- return status;
-
- no_ext:
- if (flags & GPO_INFO_FLAG_VERBOSE) {
- DEBUG(0,("process_extension: no extension available for:\n"));
- DEBUGADD(0,("%s (%s) (snapin: %s)\n",
- extension_guid,
- cse_gpo_guid_string_to_name(extension_guid),
- snapin_guid));
- }
-
- return NT_STATUS_OK;
-}
projects / thirdparty / samba.git / commitdiff
