--- /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"
+
+#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;
+
+struct gp_registry_file_header {
+ uint32_t signature;
+ uint32_t version;
+};
+
+struct gp_registry_file_entry {
+ UNISTR key;
+ UNISTR value;
+ enum winreg_Type type;
+ size_t size;
+ uint8_t *data;
+};
+
+struct gp_registry_file {
+ struct gp_registry_file_header header;
+ size_t num_entries;
+ struct gp_registry_entry *entries;
+};
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_header(const char *desc,
+ struct gp_registry_file_header *header,
+ prs_struct *ps,
+ int depth)
+{
+ if (!header)
+ return false;
+
+ prs_debug(ps, depth, desc, "reg_parse_header");
+ depth++;
+
+ if (!prs_uint32("signature", ps, depth, &header->signature))
+ return false;
+
+ if (!prs_uint32("version", ps, depth, &header->version))
+ return false;
+
+ return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_and_verify_ucs2_char(const char *desc,
+ char character,
+ prs_struct *ps,
+ int depth)
+{
+ uint16_t tmp;
+
+ if (!prs_uint16(desc, ps, depth, &tmp))
+ return false;
+
+ if (tmp != UCS2_CHAR(character))
+ return false;
+
+ return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_init(prs_struct *ps, int depth)
+{
+ return reg_parse_and_verify_ucs2_char("initiator '['", '[',
+ ps, depth);
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_sep(prs_struct *ps, int depth)
+{
+ return reg_parse_and_verify_ucs2_char("separator ';'", ';',
+ ps, depth);
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_term(prs_struct *ps, int depth)
+{
+ return reg_parse_and_verify_ucs2_char("terminator ']'", ']',
+ ps, depth);
+}
+
+
+/****************************************************************
+* [key;value;type;size;data]
+****************************************************************/
+
+static bool reg_parse_entry(TALLOC_CTX *mem_ctx,
+ const char *desc,
+ struct gp_registry_file_entry *entry,
+ prs_struct *ps,
+ int depth)
+{
+ uint32_t size = 0;
+
+ if (!entry)
+ return false;
+
+ prs_debug(ps, depth, desc, "reg_parse_entry");
+ depth++;
+
+ ZERO_STRUCTP(entry);
+
+ if (!reg_parse_init(ps, depth))
+ return false;
+
+ if (!prs_unistr("key", ps, depth, &entry->key))
+ return false;
+
+ if (!reg_parse_sep(ps, depth))
+ return false;
+
+ if (!prs_unistr("value", ps, depth, &entry->value))
+ return false;
+
+ if (!reg_parse_sep(ps, depth))
+ return false;
+
+ if (!prs_uint32("type", ps, depth, &entry->type))
+ return false;
+
+ if (!reg_parse_sep(ps, depth))
+ return false;
+
+ if (!prs_uint32("size", ps, depth, &size))
+ return false;
+
+ entry->size = size;
+
+ if (!reg_parse_sep(ps, depth))
+ return false;
+
+ if (entry->size) {
+ entry->data = TALLOC_ZERO_ARRAY(mem_ctx, uint8, entry->size);
+ if (!entry->data)
+ return false;
+ }
+
+ if (!prs_uint8s(false, "data", ps, depth, entry->data, entry->size))
+ return false;
+
+ if (!reg_parse_term(ps, depth))
+ return false;
+
+ return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool reg_parse_value(TALLOC_CTX *mem_ctx,
+ 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 gp_registry_file_entry *file_entry,
+ struct gp_registry_entry **reg_entry)
+{
+ struct registry_value *data = NULL;
+ struct gp_registry_entry *entry = NULL;
+ char *key = NULL;
+ char *value = NULL;
+ enum gp_reg_action action = GP_REG_ACTION_NONE;
+
+ ZERO_STRUCTP(*reg_entry);
+
+ data = TALLOC_ZERO_P(mem_ctx, struct registry_value);
+ if (!data)
+ return false;
+
+ if (strlen_w((const smb_ucs2_t *)file_entry->key.buffer) <= 0)
+ return false;
+
+ if (!pull_ucs2_talloc(mem_ctx, &key, file_entry->key.buffer))
+ return false;
+
+ if (strlen_w((const smb_ucs2_t *)file_entry->value.buffer) > 0) {
+ if (!pull_ucs2_talloc(mem_ctx, &value,
+ file_entry->value.buffer))
+ return false;
+ }
+
+ if (!reg_parse_value(mem_ctx, &value, &action))
+ return false;
+
+ data->type = file_entry->type;
+
+ switch (data->type) {
+ case REG_DWORD:
+ data->v.dword = atoi((char *)file_entry->data);
+ break;
+ case REG_BINARY:
+ data->v.binary = data_blob_talloc(mem_ctx,
+ file_entry->data,
+ file_entry->size);
+ break;
+ case REG_NONE:
+ break;
+ case REG_SZ:
+ data->v.sz.len = pull_ucs2_talloc(mem_ctx,
+ &data->v.sz.str,
+ (const smb_ucs2_t *)file_entry->data);
+ break;
+ case REG_DWORD_BIG_ENDIAN:
+ case REG_EXPAND_SZ:
+ case REG_LINK:
+ case REG_MULTI_SZ:
+ case REG_QWORD:
+/* case REG_DWORD_LITTLE_ENDIAN: */
+/* case REG_QWORD_LITTLE_ENDIAN: */
+ printf("not yet implemented: %d\n", data->type);
+ return false;
+ default:
+ printf("invalid reg type defined: %d\n", data->type);
+ return false;
+
+ }
+
+ entry = TALLOC_ZERO_P(mem_ctx, struct gp_registry_entry);
+ if (!entry)
+ return false;
+
+ entry->key = key;
+ entry->value = value;
+ entry->data = data;
+ entry->action = action;
+
+ *reg_entry = entry;
+
+ return true;
+}
+
+/****************************************************************
+* [key;value;type;size;data][key;value;type;size;data]...
+****************************************************************/
+
+static bool reg_parse_entries(TALLOC_CTX *mem_ctx,
+ const char *desc,
+ struct gp_registry_entry **entries,
+ size_t *num_entries,
+ prs_struct *ps,
+ int depth)
+{
+
+ if (!entries || !num_entries)
+ return false;
+
+ prs_debug(ps, depth, desc, "reg_parse_entries");
+ depth++;
+
+ *entries = NULL;
+ *num_entries = 0;
+
+ while (ps->buffer_size > ps->data_offset) {
+
+ struct gp_registry_file_entry f_entry;
+ struct gp_registry_entry *r_entry = NULL;
+
+ if (!reg_parse_entry(mem_ctx, desc, &f_entry,
+ ps, depth))
+ return false;
+
+ if (!gp_reg_entry_from_file_entry(mem_ctx,
+ &f_entry,
+ &r_entry))
+ return false;
+
+ if (!add_gp_registry_entry_to_array(mem_ctx,
+ r_entry,
+ entries,
+ num_entries))
+ return false;
+ }
+
+ return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS reg_parse_registry(TALLOC_CTX *mem_ctx,
+ uint32_t flags,
+ const char *filename,
+ struct gp_registry_entry **entries,
+ size_t *num_entries)
+{
+ uint16_t *buf = NULL;
+ size_t n = 0;
+ NTSTATUS status;
+ prs_struct ps;
+ struct gp_registry_file *reg_file;
+ const char *real_filename = NULL;
+
+ reg_file = TALLOC_ZERO_P(mem_ctx, struct gp_registry_file);
+ NT_STATUS_HAVE_NO_MEMORY(reg_file);
+
+ status = gp_find_file(mem_ctx,
+ flags,
+ filename,
+ GP_REGPOL_FILE,
+ &real_filename);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(reg_file);
+ return status;
+ }
+
+ buf = (uint16 *)file_load(real_filename, &n, 0);
+ if (!buf) {
+ TALLOC_FREE(reg_file);
+ return NT_STATUS_CANNOT_LOAD_REGISTRY_FILE;
+ }
+
+ if (!prs_init(&ps, n, mem_ctx, UNMARSHALL)) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ if (!prs_copy_data_in(&ps, (char *)buf, n)) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ prs_set_offset(&ps, 0);
+
+ if (!reg_parse_header("header", ®_file->header, &ps, 0)) {
+ status = NT_STATUS_REGISTRY_IO_FAILED;
+ goto out;
+ }
+
+ if (reg_file->header.signature != GP_REGPOL_FILE_SIGNATURE) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (reg_file->header.version != GP_REGPOL_FILE_VERSION) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (!reg_parse_entries(mem_ctx, "entries", ®_file->entries,
+ ®_file->num_entries, &ps, 0)) {
+ status = NT_STATUS_REGISTRY_IO_FAILED;
+ goto out;
+ }
+
+ *entries = reg_file->entries;
+ *num_entries = reg_file->num_entries;
+
+ status = NT_STATUS_OK;
+
+ out:
+ SAFE_FREE(buf);
+ prs_mem_free(&ps);
+
+ return status;
+}
+
+/****************************************************************
+****************************************************************/
+
+static WERROR reg_apply_registry(TALLOC_CTX *mem_ctx,
+ const struct nt_user_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(),
+ ®_ctx);
+ } else {
+ werr = gp_init_reg_ctx(mem_ctx, KEY_HKCU, REG_KEY_WRITE,
+ token,
+ ®_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",
+ dos_errstr(werr)));
+ goto done;
+ }
+ }
+
+done:
+ gp_free_reg_ctx(reg_ctx);
+ return werr;
+}
+
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS registry_process_group_policy(ADS_STRUCT *ads,
+ TALLOC_CTX *mem_ctx,
+ uint32_t flags,
+ struct registry_key *root_key,
+ const struct nt_user_token *token,
+ struct GROUP_POLICY_OBJECT *gpo,
+ const char *extension_guid,
+ const char *snapin_guid)
+{
+ NTSTATUS status;
+ WERROR werr;
+ struct gp_registry_entry *entries = NULL;
+ size_t num_entries = 0;
+ char *unix_path = NULL;
+
+ debug_gpext_header(0, "registry_process_group_policy", flags, gpo,
+ extension_guid, snapin_guid);
+
+ status = gpo_get_unix_path(mem_ctx, gpo, &unix_path);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ 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)));
+ return status;
+ }
+
+ 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",
+ dos_errstr(werr)));
+ return werror_to_ntstatus(werr);
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+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_P(mem_ctx, struct gp_extension_reg_info);
+ NT_STATUS_HAVE_NO_MEMORY(info);
+
+ status = gp_ext_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 = 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(void)
+{
+ NTSTATUS status;
+
+ ctx = talloc_init("gpext_registry_init");
+ NT_STATUS_HAVE_NO_MEMORY(ctx);
+
+ status = register_gp_extension(ctx, SMB_GPEXT_INTERFACE_VERSION,
+ GP_EXT_NAME, GP_EXT_GUID_REGISTRY,
+ ®istry_methods);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(ctx);
+ }
+
+ return status;
+}
git.samba.org / sfrench / samba-autobuild / .git / commitdiff