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-rw-r--r--source3/libgpo/gpext/registry.c440
1 files changed, 440 insertions, 0 deletions
diff --git a/source3/libgpo/gpext/registry.c b/source3/libgpo/gpext/registry.c
new file mode 100644
index 0000000..ffa1d02
--- /dev/null
+++ b/source3/libgpo/gpext/registry.c
@@ -0,0 +1,440 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Group Policy Support
+ * Copyright (C) Guenther Deschner 2007-2008,2010
+ *
+ * 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"
+#include "../libgpo/gpo_ini.h"
+#include "../libgpo/gpo.h"
+#include "libgpo/gpo_proto.h"
+#include "registry.h"
+#include "../librpc/gen_ndr/ndr_preg.h"
+#include "libgpo/gpext/gpext.h"
+
+#define GP_EXT_NAME "registry"
+
+/* more info can be found at:
+ * http://msdn2.microsoft.com/en-us/library/aa374407.aspx */
+
+#define GP_REGPOL_FILE "Registry.pol"
+
+#define GP_REGPOL_FILE_SIGNATURE 0x67655250 /* 'PReg' */
+#define GP_REGPOL_FILE_VERSION 1
+
+static TALLOC_CTX *ctx = NULL;
+
+NTSTATUS gpext_registry_init(TALLOC_CTX *mem_ctx);
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_value(TALLOC_CTX *mem_ctx,
+ const char **value,
+ enum gp_reg_action *action)
+{
+ if (!*value) {
+ *action = GP_REG_ACTION_ADD_KEY;
+ return true;
+ }
+
+ if (strncmp(*value, "**", 2) != 0) {
+ *action = GP_REG_ACTION_ADD_VALUE;
+ return true;
+ }
+
+ if (strnequal(*value, "**DelVals.", 10)) {
+ *action = GP_REG_ACTION_DEL_ALL_VALUES;
+ return true;
+ }
+
+ if (strnequal(*value, "**Del.", 6)) {
+ *value = talloc_strdup(mem_ctx, *value + 6);
+ *action = GP_REG_ACTION_DEL_VALUE;
+ return true;
+ }
+
+ if (strnequal(*value, "**SecureKey", 11)) {
+ if (strnequal(*value, "**SecureKey=1", 13)) {
+ *action = GP_REG_ACTION_SEC_KEY_SET;
+ return true;
+ }
+
+ /*************** not tested from here on ***************/
+ if (strnequal(*value, "**SecureKey=0", 13)) {
+ smb_panic("not supported: **SecureKey=0");
+ *action = GP_REG_ACTION_SEC_KEY_RESET;
+ return true;
+ }
+ DEBUG(0,("unknown: SecureKey: %s\n", *value));
+ smb_panic("not supported SecureKey method");
+ return false;
+ }
+
+ if (strnequal(*value, "**DeleteValues", strlen("**DeleteValues"))) {
+ smb_panic("not supported: **DeleteValues");
+ *action = GP_REG_ACTION_DEL_VALUES;
+ return false;
+ }
+
+ if (strnequal(*value, "**DeleteKeys", strlen("**DeleteKeys"))) {
+ smb_panic("not supported: **DeleteKeys");
+ *action = GP_REG_ACTION_DEL_KEYS;
+ return false;
+ }
+
+ DEBUG(0,("unknown value: %s\n", *value));
+ smb_panic(*value);
+ return false;
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool gp_reg_entry_from_file_entry(TALLOC_CTX *mem_ctx,
+ struct preg_entry *r,
+ struct gp_registry_entry **reg_entry)
+{
+ struct registry_value *data = NULL;
+ struct gp_registry_entry *entry = NULL;
+ enum gp_reg_action action = GP_REG_ACTION_NONE;
+ enum ndr_err_code ndr_err;
+
+ ZERO_STRUCTP(*reg_entry);
+
+ data = talloc_zero(mem_ctx, struct registry_value);
+ if (!data)
+ return false;
+
+ data->type = r->type;
+
+ ndr_err = ndr_push_union_blob(
+ &data->data,
+ mem_ctx,
+ &r->data,
+ r->type,
+ (ndr_push_flags_fn_t)ndr_push_winreg_Data);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DBG_WARNING("ndr_push_winreg_Data failed: %s\n",
+ ndr_errstr(ndr_err));
+ return false;
+ }
+
+ entry = talloc_zero(mem_ctx, struct gp_registry_entry);
+ if (!entry)
+ return false;
+
+ if (!reg_parse_value(mem_ctx, &r->valuename, &action))
+ return false;
+
+ entry->key = talloc_strdup(entry, r->keyname);
+ entry->value = talloc_strdup(entry, r->valuename);
+ entry->data = data;
+ entry->action = action;
+
+ *reg_entry = entry;
+
+ return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS reg_parse_registry(TALLOC_CTX *mem_ctx,
+ uint32_t flags,
+ const char *filename,
+ struct gp_registry_entry **entries_p,
+ size_t *num_entries_p)
+{
+ DATA_BLOB blob;
+ NTSTATUS status;
+ enum ndr_err_code ndr_err;
+ const char *real_filename = NULL;
+ struct preg_file r;
+ struct gp_registry_entry *entries = NULL;
+ size_t num_entries = 0;
+ int i;
+
+ status = gp_find_file(mem_ctx,
+ flags,
+ filename,
+ GP_REGPOL_FILE,
+ &real_filename);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ blob.data = (uint8_t *)file_load(real_filename, &blob.length, 0, NULL);
+ if (!blob.data) {
+ return NT_STATUS_CANNOT_LOAD_REGISTRY_FILE;
+ }
+
+ ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, &r,
+ (ndr_pull_flags_fn_t)ndr_pull_preg_file);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ goto out;
+ }
+
+ if (flags & GPO_INFO_FLAG_VERBOSE) {
+ NDR_PRINT_DEBUG(preg_file, &r);
+ }
+
+ if (!strequal(r.header.signature, "PReg")) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (r.header.version != GP_REGPOL_FILE_VERSION) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ for (i=0; i < r.num_entries; i++) {
+
+ struct gp_registry_entry *r_entry = NULL;
+
+ if (!gp_reg_entry_from_file_entry(mem_ctx,
+ &r.entries[i],
+ &r_entry)) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ if (!add_gp_registry_entry_to_array(mem_ctx,
+ r_entry,
+ &entries,
+ &num_entries)) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+ }
+
+ *entries_p = entries;
+ *num_entries_p = num_entries;
+
+ status = NT_STATUS_OK;
+
+ out:
+ data_blob_free(&blob);
+ return status;
+}
+
+/****************************************************************
+****************************************************************/
+
+static WERROR reg_apply_registry(TALLOC_CTX *mem_ctx,
+ const struct security_token *token,
+ struct registry_key *root_key,
+ uint32_t flags,
+ struct gp_registry_entry *entries,
+ size_t num_entries)
+{
+ struct gp_registry_context *reg_ctx = NULL;
+ WERROR werr;
+ size_t i;
+
+ if (num_entries == 0) {
+ return WERR_OK;
+ }
+
+#if 0
+ if (flags & GPO_LIST_FLAG_MACHINE) {
+ werr = gp_init_reg_ctx(mem_ctx, KEY_HKLM, REG_KEY_WRITE,
+ get_system_token(),
+ &reg_ctx);
+ } else {
+ werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
+ token,
+ &reg_ctx);
+ }
+ W_ERROR_NOT_OK_RETURN(werr);
+#endif
+ for (i=0; i<num_entries; i++) {
+
+ /* FIXME: maybe we should check here if we attempt to go beyond
+ * the 4 allowed reg keys */
+
+ werr = reg_apply_registry_entry(mem_ctx, root_key,
+ reg_ctx,
+ &(entries)[i],
+ token, flags);
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0,("failed to apply registry: %s\n",
+ win_errstr(werr)));
+ goto done;
+ }
+ }
+
+done:
+ gp_free_reg_ctx(reg_ctx);
+ return werr;
+}
+
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS registry_process_group_policy(TALLOC_CTX *mem_ctx,
+ uint32_t flags,
+ struct registry_key *root_key,
+ const struct security_token *token,
+ const struct GROUP_POLICY_OBJECT *deleted_gpo_list,
+ const struct GROUP_POLICY_OBJECT *changed_gpo_list)
+{
+ NTSTATUS status;
+ WERROR werr;
+ struct gp_registry_entry *entries = NULL;
+ size_t num_entries = 0;
+ char *unix_path = NULL;
+ const struct GROUP_POLICY_OBJECT *gpo;
+ char *gpo_cache_path = cache_path(talloc_tos(), GPO_CACHE_DIR);
+ if (gpo_cache_path == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* implementation of the policy callback function, see
+ * http://msdn.microsoft.com/en-us/library/aa373494%28v=vs.85%29.aspx
+ * for details - gd */
+
+ /* for now do not process the list of deleted group policies
+
+ for (gpo = deleted_gpo_list; gpo; gpo = gpo->next) {
+ }
+
+ */
+
+ for (gpo = changed_gpo_list; gpo; gpo = gpo->next) {
+
+ gpext_debug_header(0, "registry_process_group_policy", flags,
+ gpo, GP_EXT_GUID_REGISTRY, NULL);
+
+ status = gpo_get_unix_path(mem_ctx, gpo_cache_path,
+ gpo, &unix_path);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_cache_path_free;
+ }
+
+ status = reg_parse_registry(mem_ctx,
+ flags,
+ unix_path,
+ &entries,
+ &num_entries);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("failed to parse registry: %s\n",
+ nt_errstr(status)));
+ goto err_cache_path_free;
+ }
+
+ dump_reg_entries(flags, "READ", entries, num_entries);
+
+ werr = reg_apply_registry(mem_ctx, token, root_key, flags,
+ entries, num_entries);
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0,("failed to apply registry: %s\n",
+ win_errstr(werr)));
+ status = werror_to_ntstatus(werr);
+ goto err_cache_path_free;
+ }
+ }
+ status = NT_STATUS_OK;
+
+err_cache_path_free:
+ talloc_free(gpo_cache_path);
+ talloc_free(entries);
+ return status;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS registry_get_reg_config(TALLOC_CTX *mem_ctx,
+ struct gp_extension_reg_info **reg_info)
+{
+ NTSTATUS status;
+ struct gp_extension_reg_info *info = NULL;
+ struct gp_extension_reg_table table[] = {
+ { "ProcessGroupPolicy", REG_SZ, "registry_process_group_policy" },
+ { NULL, REG_NONE, NULL }
+ };
+
+ info = talloc_zero(mem_ctx, struct gp_extension_reg_info);
+ NT_STATUS_HAVE_NO_MEMORY(info);
+
+ status = gpext_info_add_entry(mem_ctx, GP_EXT_NAME,
+ GP_EXT_GUID_REGISTRY,
+ table, info);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ *reg_info = info;
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS registry_initialize(TALLOC_CTX *mem_ctx)
+{
+ return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS registry_shutdown(void)
+{
+ NTSTATUS status;
+
+ status = gpext_unregister_gp_extension(GP_EXT_NAME);
+ if (NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ TALLOC_FREE(ctx);
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+static struct gp_extension_methods registry_methods = {
+ .initialize = registry_initialize,
+ .process_group_policy = registry_process_group_policy,
+ .get_reg_config = registry_get_reg_config,
+ .shutdown = registry_shutdown
+};
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gpext_registry_init(TALLOC_CTX *mem_ctx)
+{
+ NTSTATUS status;
+
+ ctx = talloc_init("gpext_registry_init");
+ NT_STATUS_HAVE_NO_MEMORY(ctx);
+
+ status = gpext_register_gp_extension(ctx, SMB_GPEXT_INTERFACE_VERSION,
+ GP_EXT_NAME, GP_EXT_GUID_REGISTRY,
+ &registry_methods);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(ctx);
+ }
+
+ return status;
+}