Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 672 insertions, 0 deletions

diff --git a/libgpo/gpo_util.c b/libgpo/gpo_util.c
new file mode 100644
index 0000000..0c72340
--- /dev/null
+++ b/libgpo/gpo_util.c
@@ -0,0 +1,672 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Group Policy Object Support
+ *  Copyright (C) Guenther Deschner 2005-2008
+ *
+ *  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"
+#include "system/filesys.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+#include "../librpc/gen_ndr/ndr_security.h"
+#include "../libgpo/gpo.h"
+#include "../libcli/security/security.h"
+#include "registry.h"
+#include "libgpo/gpo_proto.h"
+#include "libgpo/gpext/gpext.h"
+
+#if 0
+#define DEFAULT_DOMAIN_POLICY "Default Domain Policy"
+#define DEFAULT_DOMAIN_CONTROLLERS_POLICY "Default Domain Controllers Policy"
+#endif
+
+/* should we store a parsed guid ? */
+struct gp_table {
+	const char *name;
+	const char *guid_string;
+};
+
+#if 0 /* unused */
+static struct gp_table gpo_default_policy[] = {
+	{ DEFAULT_DOMAIN_POLICY,
+		"31B2F340-016D-11D2-945F-00C04FB984F9" },
+	{ DEFAULT_DOMAIN_CONTROLLERS_POLICY,
+		"6AC1786C-016F-11D2-945F-00C04fB984F9" },
+	{ NULL, NULL }
+};
+#endif
+
+/* the following is seen in gPCMachineExtensionNames / gPCUserExtensionNames */
+
+static struct gp_table gpo_cse_extensions[] = {
+	/* used to be "Administrative Templates Extension" */
+	/* "Registry Settings"
+	(http://support.microsoft.com/kb/216357/EN-US/) */
+	{ "Registry Settings",
+		GP_EXT_GUID_REGISTRY },
+	{ "Microsoft Disc Quota",
+		"3610EDA5-77EF-11D2-8DC5-00C04FA31A66" },
+	{ "EFS recovery",
+		"B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
+	{ "Folder Redirection",
+		"25537BA6-77A8-11D2-9B6C-0000F8080861" },
+	{ "IP Security",
+		"E437BC1C-AA7D-11D2-A382-00C04F991E27" },
+	{ "Internet Explorer Branding",
+		"A2E30F80-D7DE-11d2-BBDE-00C04F86AE3B" },
+	{ "QoS Packet Scheduler",
+		"426031c0-0b47-4852-b0ca-ac3d37bfcb39" },
+	{ "Scripts",
+		GP_EXT_GUID_SCRIPTS },
+	{ "Security",
+		GP_EXT_GUID_SECURITY },
+	{ "Software Installation",
+		"C6DC5466-785A-11D2-84D0-00C04FB169F7" },
+	{ "Wireless Group Policy",
+		"0ACDD40C-75AC-BAA0-BF6DE7E7FE63" },
+	{ "Application Management",
+		"C6DC5466-785A-11D2-84D0-00C04FB169F7" },
+	{ "unknown",
+		"3060E8D0-7020-11D2-842D-00C04FA372D4" },
+	{ NULL, NULL }
+};
+
+/* guess work */
+static struct gp_table gpo_cse_snapin_extensions[] = {
+	{ "Administrative Templates",
+		"0F6B957D-509E-11D1-A7CC-0000F87571E3" },
+	{ "Certificates",
+		"53D6AB1D-2488-11D1-A28C-00C04FB94F17" },
+	{ "EFS recovery policy processing",
+		"B1BE8D72-6EAC-11D2-A4EA-00C04F79F83A" },
+	{ "Folder Redirection policy processing",
+		"25537BA6-77A8-11D2-9B6C-0000F8080861" },
+	{ "Folder Redirection",
+		"88E729D6-BDC1-11D1-BD2A-00C04FB9603F" },
+	{ "Registry policy processing",
+		"35378EAC-683F-11D2-A89A-00C04FBBCFA2" },
+	{ "Remote Installation Services",
+		"3060E8CE-7020-11D2-842D-00C04FA372D4" },
+	{ "Security Settings",
+		"803E14A0-B4FB-11D0-A0D0-00A0C90F574B" },
+	{ "Security policy processing",
+		"827D319E-6EAC-11D2-A4EA-00C04F79F83A" },
+	{ "unknown",
+		"3060E8D0-7020-11D2-842D-00C04FA372D4" },
+	{ "unknown2",
+		"53D6AB1B-2488-11D1-A28C-00C04FB94F17" },
+	{ NULL, NULL }
+};
+
+/****************************************************************
+****************************************************************/
+
+static const char *name_to_guid_string(const char *name,
+				       struct gp_table *table)
+{
+	int i;
+
+	for (i = 0; table[i].name; i++) {
+		if (strequal(name, table[i].name)) {
+			return table[i].guid_string;
+		}
+	}
+
+	return NULL;
+}
+
+/****************************************************************
+****************************************************************/
+
+static const char *guid_string_to_name(const char *guid_string,
+				       struct gp_table *table)
+{
+	int i;
+
+	for (i = 0; table[i].guid_string; i++) {
+		if (strequal(guid_string, table[i].guid_string)) {
+			return table[i].name;
+		}
+	}
+
+	return NULL;
+}
+
+/****************************************************************
+****************************************************************/
+
+static const char *snapin_guid_string_to_name(const char *guid_string,
+					      struct gp_table *table)
+{
+	int i;
+	for (i = 0; table[i].guid_string; i++) {
+		if (strequal(guid_string, table[i].guid_string)) {
+			return table[i].name;
+		}
+	}
+	return NULL;
+}
+
+#if 0 /* unused */
+static const char *default_gpo_name_to_guid_string(const char *name)
+{
+	return name_to_guid_string(name, gpo_default_policy);
+}
+
+static const char *default_gpo_guid_string_to_name(const char *guid)
+{
+	return guid_string_to_name(guid, gpo_default_policy);
+}
+#endif
+
+/****************************************************************
+****************************************************************/
+
+const char *cse_gpo_guid_string_to_name(const char *guid)
+{
+	return guid_string_to_name(guid, gpo_cse_extensions);
+}
+
+/****************************************************************
+****************************************************************/
+
+const char *cse_gpo_name_to_guid_string(const char *name)
+{
+	return name_to_guid_string(name, gpo_cse_extensions);
+}
+
+/****************************************************************
+****************************************************************/
+
+const char *cse_snapin_gpo_guid_string_to_name(const char *guid)
+{
+	return snapin_guid_string_to_name(guid, gpo_cse_snapin_extensions);
+}
+
+/****************************************************************
+****************************************************************/
+
+void dump_gp_ext(struct GP_EXT *gp_ext, int debuglevel)
+{
+	int lvl = debuglevel;
+	int i;
+
+	if (gp_ext == NULL) {
+		return;
+	}
+
+	DEBUG(lvl,("\t---------------------\n\n"));
+	DEBUGADD(lvl,("\tname:\t\t\t%s\n", gp_ext->gp_extension));
+
+	for (i=0; i< gp_ext->num_exts; i++) {
+
+		DEBUGADD(lvl,("\textension:\t\t\t%s\n",
+			gp_ext->extensions_guid[i]));
+		DEBUGADD(lvl,("\textension (name):\t\t\t%s\n",
+			gp_ext->extensions[i]));
+
+		DEBUGADD(lvl,("\tsnapin:\t\t\t%s\n",
+			gp_ext->snapins_guid[i]));
+		DEBUGADD(lvl,("\tsnapin (name):\t\t\t%s\n",
+			gp_ext->snapins[i]));
+	}
+}
+
+#ifdef HAVE_LDAP
+
+/****************************************************************
+****************************************************************/
+
+void dump_gpo(const struct GROUP_POLICY_OBJECT *gpo,
+	      int debuglevel)
+{
+	int lvl = debuglevel;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (gpo == NULL) {
+		goto out;
+	}
+
+	DEBUG(lvl,("---------------------\n\n"));
+
+	DEBUGADD(lvl,("name:\t\t\t%s\n", gpo->name));
+	DEBUGADD(lvl,("displayname:\t\t%s\n", gpo->display_name));
+	DEBUGADD(lvl,("version:\t\t%d (0x%08x)\n", gpo->version, gpo->version));
+	DEBUGADD(lvl,("version_user:\t\t%d (0x%04x)\n",
+		GPO_VERSION_USER(gpo->version),
+		GPO_VERSION_USER(gpo->version)));
+	DEBUGADD(lvl,("version_machine:\t%d (0x%04x)\n",
+		GPO_VERSION_MACHINE(gpo->version),
+		 GPO_VERSION_MACHINE(gpo->version)));
+	DEBUGADD(lvl,("filesyspath:\t\t%s\n", gpo->file_sys_path));
+	DEBUGADD(lvl,("dspath:\t\t%s\n", gpo->ds_path));
+
+	DEBUGADD(lvl,("options:\t\t%d ", gpo->options));
+	switch (gpo->options) {
+		case GPFLAGS_ALL_ENABLED:
+			DEBUGADD(lvl,("GPFLAGS_ALL_ENABLED\n"));
+			break;
+		case GPFLAGS_USER_SETTINGS_DISABLED:
+			DEBUGADD(lvl,("GPFLAGS_USER_SETTINGS_DISABLED\n"));
+			break;
+		case GPFLAGS_MACHINE_SETTINGS_DISABLED:
+			DEBUGADD(lvl,("GPFLAGS_MACHINE_SETTINGS_DISABLED\n"));
+			break;
+		case GPFLAGS_ALL_DISABLED:
+			DEBUGADD(lvl,("GPFLAGS_ALL_DISABLED\n"));
+			break;
+		default:
+			DEBUGADD(lvl,("unknown option: %d\n", gpo->options));
+			break;
+	}
+
+	DEBUGADD(lvl,("link:\t\t\t%s\n", gpo->link));
+	DEBUGADD(lvl,("link_type:\t\t%d ", gpo->link_type));
+	switch (gpo->link_type) {
+		case GP_LINK_UNKOWN:
+			DEBUGADD(lvl,("GP_LINK_UNKOWN\n"));
+			break;
+		case GP_LINK_OU:
+			DEBUGADD(lvl,("GP_LINK_OU\n"));
+			break;
+		case GP_LINK_DOMAIN:
+			DEBUGADD(lvl,("GP_LINK_DOMAIN\n"));
+			break;
+		case GP_LINK_SITE:
+			DEBUGADD(lvl,("GP_LINK_SITE\n"));
+			break;
+		case GP_LINK_MACHINE:
+			DEBUGADD(lvl,("GP_LINK_MACHINE\n"));
+			break;
+		default:
+			break;
+	}
+
+	DEBUGADD(lvl,("machine_extensions:\t%s\n", gpo->machine_extensions));
+
+	if (gpo->machine_extensions) {
+
+		struct GP_EXT *gp_ext = NULL;
+
+		if (!ads_parse_gp_ext(frame, gpo->machine_extensions,
+				      &gp_ext)) {
+			goto out;
+		}
+		dump_gp_ext(gp_ext, lvl);
+	}
+
+	DEBUGADD(lvl,("user_extensions:\t%s\n", gpo->user_extensions));
+
+	if (gpo->user_extensions) {
+
+		struct GP_EXT *gp_ext = NULL;
+
+		if (!ads_parse_gp_ext(frame, gpo->user_extensions,
+				      &gp_ext)) {
+			goto out;
+		}
+		dump_gp_ext(gp_ext, lvl);
+	}
+	if (gpo->security_descriptor) {
+		DEBUGADD(lvl,("security descriptor:\n"));
+
+		NDR_PRINT_DEBUG(security_descriptor, gpo->security_descriptor);
+	}
+ out:
+	talloc_free(frame);
+}
+
+/****************************************************************
+****************************************************************/
+
+void dump_gpo_list(const struct GROUP_POLICY_OBJECT *gpo_list,
+		   int debuglevel)
+{
+	const struct GROUP_POLICY_OBJECT *gpo = NULL;
+
+	for (gpo = gpo_list; gpo; gpo = gpo->next) {
+		dump_gpo(gpo, debuglevel);
+	}
+}
+
+/****************************************************************
+****************************************************************/
+
+void dump_gplink(const struct GP_LINK *gp_link)
+{
+	int i;
+	int lvl = 10;
+
+	if (gp_link == NULL) {
+		return;
+	}
+
+	DEBUG(lvl,("---------------------\n\n"));
+
+	DEBUGADD(lvl,("gplink: %s\n", gp_link->gp_link));
+	DEBUGADD(lvl,("gpopts: %d ", gp_link->gp_opts));
+	switch (gp_link->gp_opts) {
+		case GPOPTIONS_INHERIT:
+			DEBUGADD(lvl,("GPOPTIONS_INHERIT\n"));
+			break;
+		case GPOPTIONS_BLOCK_INHERITANCE:
+			DEBUGADD(lvl,("GPOPTIONS_BLOCK_INHERITANCE\n"));
+			break;
+		default:
+			break;
+	}
+
+	DEBUGADD(lvl,("num links: %d\n", gp_link->num_links));
+
+	for (i = 0; i < gp_link->num_links; i++) {
+
+		DEBUGADD(lvl,("---------------------\n\n"));
+
+		DEBUGADD(lvl,("link: #%d\n", i + 1));
+		DEBUGADD(lvl,("name: %s\n", gp_link->link_names[i]));
+
+		DEBUGADD(lvl,("opt: %d ", gp_link->link_opts[i]));
+		if (gp_link->link_opts[i] & GPO_LINK_OPT_ENFORCED) {
+			DEBUGADD(lvl,("GPO_LINK_OPT_ENFORCED "));
+		}
+		if (gp_link->link_opts[i] & GPO_LINK_OPT_DISABLED) {
+			DEBUGADD(lvl,("GPO_LINK_OPT_DISABLED"));
+		}
+		DEBUGADD(lvl,("\n"));
+	}
+}
+
+#endif /* HAVE_LDAP */
+
+/****************************************************************
+****************************************************************/
+
+bool gpo_get_gp_ext_from_gpo(TALLOC_CTX *mem_ctx,
+			     uint32_t flags,
+			     const struct GROUP_POLICY_OBJECT *gpo,
+			     struct GP_EXT **gp_ext)
+{
+	ZERO_STRUCTP(*gp_ext);
+
+	if (flags & GPO_INFO_FLAG_MACHINE) {
+
+		if (gpo->machine_extensions) {
+
+			if (!ads_parse_gp_ext(mem_ctx, gpo->machine_extensions,
+					      gp_ext)) {
+				return false;
+			}
+		}
+	} else {
+
+		if (gpo->user_extensions) {
+
+			if (!ads_parse_gp_ext(mem_ctx, gpo->user_extensions,
+					      gp_ext)) {
+				return false;
+			}
+		}
+	}
+
+	return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gpo_process_gpo_list(TALLOC_CTX *mem_ctx,
+			      const struct security_token *token,
+			      const struct GROUP_POLICY_OBJECT *deleted_gpo_list,
+			      const struct GROUP_POLICY_OBJECT *changed_gpo_list,
+			      const char *extensions_guid_filter,
+			      uint32_t flags)
+{
+	NTSTATUS status = NT_STATUS_OK;
+	struct registry_key *root_key = NULL;
+	struct gp_registry_context *reg_ctx = NULL;
+	WERROR werr;
+
+	/* get the key here */
+	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);
+	}
+	if (!W_ERROR_IS_OK(werr)) {
+		talloc_free(reg_ctx);
+		return werror_to_ntstatus(werr);
+	}
+
+	root_key = reg_ctx->curr_key;
+
+	status = gpext_process_extension(mem_ctx,
+					 flags, token, root_key,
+					 deleted_gpo_list,
+					 changed_gpo_list,
+					 extensions_guid_filter);
+	talloc_free(reg_ctx);
+	talloc_free(root_key);
+	gpext_free_gp_extensions();
+
+	return status;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gpo_get_unix_path(TALLOC_CTX *mem_ctx,
+                           const char *cache_dir,
+			   const struct GROUP_POLICY_OBJECT *gpo,
+			   char **unix_path)
+{
+	char *server, *share, *nt_path;
+	return gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
+				       &server, &share, &nt_path, unix_path);
+}
+
+/****************************************************************
+****************************************************************/
+
+char *gpo_flag_str(TALLOC_CTX *ctx, uint32_t flags)
+{
+	char *str = NULL;
+
+	if (flags == 0) {
+		return NULL;
+	}
+
+	str = talloc_strdup(ctx, "");
+	if (!str) {
+		return NULL;
+	}
+
+	if (flags & GPO_INFO_FLAG_SLOWLINK)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_SLOWLINK ");
+	if (flags & GPO_INFO_FLAG_VERBOSE)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_VERBOSE ");
+	if (flags & GPO_INFO_FLAG_SAFEMODE_BOOT)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_SAFEMODE_BOOT ");
+	if (flags & GPO_INFO_FLAG_NOCHANGES)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_NOCHANGES ");
+	if (flags & GPO_INFO_FLAG_MACHINE)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_MACHINE ");
+	if (flags & GPO_INFO_FLAG_LOGRSOP_TRANSITION)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_LOGRSOP_TRANSITION ");
+	if (flags & GPO_INFO_FLAG_LINKTRANSITION)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_LINKTRANSITION ");
+	if (flags & GPO_INFO_FLAG_FORCED_REFRESH)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_FORCED_REFRESH ");
+	if (flags & GPO_INFO_FLAG_BACKGROUND)
+		str = talloc_strdup_append(str, "GPO_INFO_FLAG_BACKGROUND ");
+
+	return str;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gp_find_file(TALLOC_CTX *mem_ctx,
+		      uint32_t flags,
+		      const char *filename,
+		      const char *suffix,
+		      const char **filename_out)
+{
+	const char *tmp = NULL;
+	struct stat sbuf;
+	const char *path = NULL;
+
+	if (flags & GPO_LIST_FLAG_MACHINE) {
+		path = "Machine";
+	} else {
+		path = "User";
+	}
+
+	tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
+			      path, suffix);
+	NT_STATUS_HAVE_NO_MEMORY(tmp);
+
+	if (stat(tmp, &sbuf) == 0) {
+		*filename_out = tmp;
+		return NT_STATUS_OK;
+	}
+
+	path = talloc_strdup_upper(mem_ctx, path);
+	NT_STATUS_HAVE_NO_MEMORY(path);
+
+	tmp = talloc_asprintf(mem_ctx, "%s/%s/%s", filename,
+			      path, suffix);
+	NT_STATUS_HAVE_NO_MEMORY(tmp);
+
+	if (stat(tmp, &sbuf) == 0) {
+		*filename_out = tmp;
+		return NT_STATUS_OK;
+	}
+
+	return NT_STATUS_NO_SUCH_FILE;
+}
+
+/****************************************************************
+****************************************************************/
+
+ADS_STATUS gp_get_machine_token(ADS_STRUCT *ads,
+				TALLOC_CTX *mem_ctx,
+				const char *dn,
+				struct security_token **token)
+{
+#ifdef HAVE_ADS
+	struct security_token *ad_token = NULL;
+	ADS_STATUS status;
+	NTSTATUS ntstatus;
+
+	status = ads_get_sid_token(ads, mem_ctx, dn, &ad_token);
+	if (!ADS_ERR_OK(status)) {
+		return status;
+	}
+	ntstatus = merge_with_system_token(mem_ctx, ad_token,
+					   token);
+	if (!NT_STATUS_IS_OK(ntstatus)) {
+		return ADS_ERROR_NT(ntstatus);
+	}
+	return ADS_SUCCESS;
+#else
+	return ADS_ERROR_NT(NT_STATUS_NOT_SUPPORTED);
+#endif
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gpo_copy(TALLOC_CTX *mem_ctx,
+		  const struct GROUP_POLICY_OBJECT *gpo_src,
+		  struct GROUP_POLICY_OBJECT **gpo_dst)
+{
+	struct GROUP_POLICY_OBJECT *gpo;
+
+	gpo = talloc_zero(mem_ctx, struct GROUP_POLICY_OBJECT);
+	NT_STATUS_HAVE_NO_MEMORY(gpo);
+
+	gpo->options		= gpo_src->options;
+	gpo->version		= gpo_src->version;
+
+	gpo->ds_path		= talloc_strdup(gpo, gpo_src->ds_path);
+	if (gpo->ds_path == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->file_sys_path	= talloc_strdup(gpo, gpo_src->file_sys_path);
+	if (gpo->file_sys_path == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->display_name	= talloc_strdup(gpo, gpo_src->display_name);
+	if (gpo->display_name == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->name		= talloc_strdup(gpo, gpo_src->name);
+	if (gpo->name == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->link		= talloc_strdup(gpo, gpo_src->link);
+	if (gpo->link == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->link_type		= gpo_src->link_type;
+
+	if (gpo_src->user_extensions) {
+		gpo->user_extensions = talloc_strdup(gpo, gpo_src->user_extensions);
+		if (gpo->user_extensions == NULL) {
+			TALLOC_FREE(gpo);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (gpo_src->machine_extensions) {
+		gpo->machine_extensions = talloc_strdup(gpo, gpo_src->machine_extensions);
+		if (gpo->machine_extensions == NULL) {
+			TALLOC_FREE(gpo);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (gpo_src->security_descriptor == NULL) {
+		/* existing SD assumed */
+		TALLOC_FREE(gpo);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	gpo->security_descriptor = security_descriptor_copy(gpo,
+						gpo_src->security_descriptor);
+	if (gpo->security_descriptor == NULL) {
+		TALLOC_FREE(gpo);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gpo->next = gpo->prev = NULL;
+
+	*gpo_dst = gpo;
+
+	return NT_STATUS_OK;
+}