This commit was generated by cvs2svn to compensate for changes in r30,

which included commits to RCS files with non-trunk default branches.
(This used to be commit 3a69cffb062d4f1238b8cae10481c1f2ea4d3d8b)

1 files changed, 855 insertions, 0 deletions

diff --git a/source4/passdb/pdb_interface.c b/source4/passdb/pdb_interface.c
new file mode 100644
index 0000000000..48a039b3de
--- /dev/null
+++ b/source4/passdb/pdb_interface.c
@@ -0,0 +1,855 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Bartlett			2002
+   Copyright (C) Jelmer Vernooij			2002
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_PASSDB
+
+/** List of various built-in passdb modules */
+static const struct {
+    const char *name;
+    /* Function to create a member of the pdb_methods list */
+    pdb_init_function init;
+} builtin_pdb_init_functions[] = {
+	{ "smbpasswd", pdb_init_smbpasswd },
+	{ "smbpasswd_nua", pdb_init_smbpasswd_nua },
+	{ "tdbsam", pdb_init_tdbsam },
+	{ "tdbsam_nua", pdb_init_tdbsam_nua },
+	{ "ldapsam", pdb_init_ldapsam },
+	{ "ldapsam_nua", pdb_init_ldapsam_nua },
+	{ "unixsam", pdb_init_unixsam },
+	{ "guest", pdb_init_guestsam },
+	{ "nisplussam", pdb_init_nisplussam },
+	{ NULL, NULL}
+};
+
+static struct pdb_init_function_entry *backends;
+static void lazy_initialize_passdb(void);
+
+static void lazy_initialize_passdb()
+{
+	int i;
+	static BOOL initialised = False;
+	
+	if(!initialised) {
+		initialised = True;
+
+		for(i = 0; builtin_pdb_init_functions[i].name; i++) {
+			smb_register_passdb(builtin_pdb_init_functions[i].name, builtin_pdb_init_functions[i].init, PASSDB_INTERFACE_VERSION);
+		}
+	}
+}
+
+BOOL smb_register_passdb(const char *name, pdb_init_function init, int version) 
+{
+	struct pdb_init_function_entry *entry = backends;
+
+	if(version != PASSDB_INTERFACE_VERSION)
+		return False;
+
+	DEBUG(5,("Attempting to register passdb backend %s\n", name));
+
+	/* Check for duplicates */
+	while(entry) { 
+		if(strcasecmp(name, entry->name) == 0) { 
+			DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
+			return False;
+		}
+		entry = entry->next;
+	}
+
+	entry = smb_xmalloc(sizeof(struct pdb_init_function_entry));
+	entry->name = name;
+	entry->init = init;
+
+	DLIST_ADD(backends, entry);
+	DEBUG(5,("Successfully added passdb backend '%s'\n", name));
+	return True;
+}
+
+struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
+{
+	struct pdb_init_function_entry *entry = backends;
+
+	while(entry) {
+		if (strequal(entry->name, name)) return entry;
+		entry = entry->next;
+	}
+
+	return NULL;
+}
+
+static NTSTATUS context_setsampwent(struct pdb_context *context, BOOL update)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if (!context) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	context->pwent_methods = context->pdb_methods;
+
+	if (!context->pwent_methods) {
+		/* No passdbs at all */
+		return ret;
+	}
+
+	while (NT_STATUS_IS_ERR(ret = context->pwent_methods->setsampwent(context->pwent_methods, update))) {
+		context->pwent_methods = context->pwent_methods->next;
+		if (context->pwent_methods == NULL) 
+			return NT_STATUS_UNSUCCESSFUL;
+	}
+	return ret;
+}
+
+static void context_endsampwent(struct pdb_context *context)
+{
+	if ((!context)){
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return;
+	}
+
+	if (context->pwent_methods && context->pwent_methods->endsampwent)
+		context->pwent_methods->endsampwent(context->pwent_methods);
+
+	/* So we won't get strange data when calling getsampwent now */
+	context->pwent_methods = NULL;
+}
+
+static NTSTATUS context_getsampwent(struct pdb_context *context, SAM_ACCOUNT *user)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pwent_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	/* Loop until we find something useful */
+	while (NT_STATUS_IS_ERR(ret = context->pwent_methods->getsampwent(context->pwent_methods, user))) {
+
+		context->pwent_methods->endsampwent(context->pwent_methods);
+
+		context->pwent_methods = context->pwent_methods->next;
+
+		/* All methods are checked now. There are no more entries */
+		if (context->pwent_methods == NULL)
+			return ret;
+	
+		context->pwent_methods->setsampwent(context->pwent_methods, False);
+	}
+	user->methods = context->pwent_methods;
+	return ret;
+}
+
+static NTSTATUS context_getsampwnam(struct pdb_context *context, SAM_ACCOUNT *sam_acct, const char *username)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *curmethods;
+	if ((!context)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	curmethods = context->pdb_methods;
+	while (curmethods){
+		if (NT_STATUS_IS_OK(ret = curmethods->getsampwnam(curmethods, sam_acct, username))) {
+			sam_acct->methods = curmethods;
+			return ret;
+		}
+		curmethods = curmethods->next;
+	}
+
+	return ret;
+}
+
+static NTSTATUS context_getsampwsid(struct pdb_context *context, SAM_ACCOUNT *sam_acct, const DOM_SID *sid)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *curmethods;
+	if ((!context)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	
+	curmethods = context->pdb_methods;
+
+	while (curmethods){
+		if (NT_STATUS_IS_OK(ret = curmethods->getsampwsid(curmethods, sam_acct, sid))) {
+			sam_acct->methods = curmethods;
+			return ret;
+		}
+		curmethods = curmethods->next;
+	}
+
+	return ret;
+}
+
+static NTSTATUS context_add_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pdb_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	/** @todo  This is where a 're-read on add' should be done */
+	/* We now add a new account to the first database listed. 
+	 * Should we? */
+
+	return context->pdb_methods->add_sam_account(context->pdb_methods, sam_acct);
+}
+
+static NTSTATUS context_update_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if (!context) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	if (!sam_acct || !sam_acct->methods){
+		DEBUG(0, ("invalid sam_acct specified\n"));
+		return ret;
+	}
+
+	/** @todo  This is where a 're-read on update' should be done */
+
+	return sam_acct->methods->update_sam_account(sam_acct->methods, sam_acct);
+}
+
+static NTSTATUS context_delete_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *pdb_selected;
+	if (!context) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	if (!sam_acct->methods){
+		pdb_selected = context->pdb_methods;
+		/* There's no passdb backend specified for this account.
+		 * Try to delete it in every passdb available 
+		 * Needed to delete accounts in smbpasswd that are not
+		 * in /etc/passwd.
+		 */
+		while (pdb_selected){
+			if (NT_STATUS_IS_OK(ret = pdb_selected->delete_sam_account(pdb_selected, sam_acct))) {
+				return ret;
+			}
+			pdb_selected = pdb_selected->next;
+		}
+		return ret;
+	}
+
+	if (!sam_acct->methods->delete_sam_account){
+		DEBUG(0,("invalid sam_acct->methods->delete_sam_account\n"));
+		return ret;
+	}
+	
+	return sam_acct->methods->delete_sam_account(sam_acct->methods, sam_acct);
+}
+
+static NTSTATUS context_getgrsid(struct pdb_context *context,
+				 GROUP_MAP *map, DOM_SID sid, BOOL with_priv)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *curmethods;
+	if ((!context)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	curmethods = context->pdb_methods;
+	while (curmethods){
+		ret = curmethods->getgrsid(curmethods, map, sid, with_priv);
+		if (NT_STATUS_IS_OK(ret)) {
+			map->methods = curmethods;
+			return ret;
+		}
+		curmethods = curmethods->next;
+	}
+
+	return ret;
+}
+
+static NTSTATUS context_getgrgid(struct pdb_context *context,
+				 GROUP_MAP *map, gid_t gid, BOOL with_priv)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *curmethods;
+	if ((!context)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	curmethods = context->pdb_methods;
+	while (curmethods){
+		ret = curmethods->getgrgid(curmethods, map, gid, with_priv);
+		if (NT_STATUS_IS_OK(ret)) {
+			map->methods = curmethods;
+			return ret;
+		}
+		curmethods = curmethods->next;
+	}
+
+	return ret;
+}
+
+static NTSTATUS context_getgrnam(struct pdb_context *context,
+				 GROUP_MAP *map, char *name, BOOL with_priv)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	struct pdb_methods *curmethods;
+	if ((!context)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+	curmethods = context->pdb_methods;
+	while (curmethods){
+		ret = curmethods->getgrnam(curmethods, map, name, with_priv);
+		if (NT_STATUS_IS_OK(ret)) {
+			map->methods = curmethods;
+			return ret;
+		}
+		curmethods = curmethods->next;
+	}
+
+	return ret;
+}
+
+static NTSTATUS context_add_group_mapping_entry(struct pdb_context *context,
+						GROUP_MAP *map)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pdb_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	return context->pdb_methods->add_group_mapping_entry(context->pdb_methods,
+							     map);
+}
+
+static NTSTATUS context_update_group_mapping_entry(struct pdb_context *context,
+						   GROUP_MAP *map)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pdb_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	return context->
+		pdb_methods->update_group_mapping_entry(context->pdb_methods, map);
+}
+
+static NTSTATUS context_delete_group_mapping_entry(struct pdb_context *context,
+						   DOM_SID sid)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pdb_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	return context->
+		pdb_methods->delete_group_mapping_entry(context->pdb_methods, sid);
+}
+
+static NTSTATUS context_enum_group_mapping(struct pdb_context *context,
+					   enum SID_NAME_USE sid_name_use,
+					   GROUP_MAP **rmap, int *num_entries,
+					   BOOL unix_only, BOOL with_priv)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+	if ((!context) || (!context->pdb_methods)) {
+		DEBUG(0, ("invalid pdb_context specified!\n"));
+		return ret;
+	}
+
+	return context->pdb_methods->enum_group_mapping(context->pdb_methods,
+							sid_name_use, rmap,
+							num_entries, unix_only,
+							with_priv);
+}
+
+/******************************************************************
+  Free and cleanup a pdb context, any associated data and anything
+  that the attached modules might have associated.
+ *******************************************************************/
+
+static void free_pdb_context(struct pdb_context **context)
+{
+	struct pdb_methods *pdb_selected = (*context)->pdb_methods;
+
+	while (pdb_selected){
+		if(pdb_selected->free_private_data)
+			pdb_selected->free_private_data(&(pdb_selected->private_data));
+		pdb_selected = pdb_selected->next;
+	}
+
+	talloc_destroy((*context)->mem_ctx);
+	*context = NULL;
+}
+
+/******************************************************************
+  Make a pdb_methods from scratch
+ *******************************************************************/
+
+static NTSTATUS make_pdb_methods_name(struct pdb_methods **methods, struct pdb_context *context, const char *selected)
+{
+	char *module_name = smb_xstrdup(selected);
+	char *module_location = NULL, *p;
+	struct pdb_init_function_entry *entry;
+	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+
+	lazy_initialize_passdb();
+
+	p = strchr(module_name, ':');
+
+	if (p) {
+		*p = 0;
+		module_location = p+1;
+		trim_string(module_location, " ", " ");
+	}
+
+	trim_string(module_name, " ", " ");
+
+
+	DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name));
+
+	entry = pdb_find_backend_entry(module_name);
+	
+	/* Try to find a module that contains this module */
+	if(!entry) { 
+		smb_probe_module("passdb", module_name);
+		entry = pdb_find_backend_entry(module_name);
+	}
+	
+	/* No such backend found */
+	if(!entry) { 
+		SAFE_FREE(module_name);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	
+	DEBUG(5,("Found pdb backend %s\n", module_name));
+	nt_status = entry->init(context, methods, module_location);
+	if (NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(5,("pdb backend %s has a valid init\n", selected));
+	} else {
+		DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n", selected, nt_errstr(nt_status)));
+	}
+	SAFE_FREE(module_name);
+	return nt_status;
+}
+
+/******************************************************************
+  Make a pdb_context from scratch.
+ *******************************************************************/
+
+static NTSTATUS make_pdb_context(struct pdb_context **context) 
+{
+	TALLOC_CTX *mem_ctx;
+
+	mem_ctx = talloc_init("pdb_context internal allocation context");
+
+	if (!mem_ctx) {
+		DEBUG(0, ("make_pdb_context: talloc init failed!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}		
+
+	*context = talloc(mem_ctx, sizeof(**context));
+	if (!*context) {
+		DEBUG(0, ("make_pdb_context: talloc failed!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ZERO_STRUCTP(*context);
+
+	(*context)->mem_ctx = mem_ctx;
+
+	(*context)->pdb_setsampwent = context_setsampwent;
+	(*context)->pdb_endsampwent = context_endsampwent;
+	(*context)->pdb_getsampwent = context_getsampwent;
+	(*context)->pdb_getsampwnam = context_getsampwnam;
+	(*context)->pdb_getsampwsid = context_getsampwsid;
+	(*context)->pdb_add_sam_account = context_add_sam_account;
+	(*context)->pdb_update_sam_account = context_update_sam_account;
+	(*context)->pdb_delete_sam_account = context_delete_sam_account;
+	(*context)->pdb_getgrsid = context_getgrsid;
+	(*context)->pdb_getgrgid = context_getgrgid;
+	(*context)->pdb_getgrnam = context_getgrnam;
+	(*context)->pdb_add_group_mapping_entry = context_add_group_mapping_entry;
+	(*context)->pdb_update_group_mapping_entry = context_update_group_mapping_entry;
+	(*context)->pdb_delete_group_mapping_entry = context_delete_group_mapping_entry;
+	(*context)->pdb_enum_group_mapping = context_enum_group_mapping;
+
+	(*context)->free_fn = free_pdb_context;
+
+	return NT_STATUS_OK;
+}
+
+
+/******************************************************************
+  Make a pdb_context, given an array of strings
+ *******************************************************************/
+
+NTSTATUS make_pdb_context_list(struct pdb_context **context, const char **selected) 
+{
+	int i = 0;
+	struct pdb_methods *curmethods, *tmpmethods;
+	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+
+	if (!NT_STATUS_IS_OK(nt_status = make_pdb_context(context))) {
+		return nt_status;
+	}
+
+	while (selected[i]){
+		/* Try to initialise pdb */
+		DEBUG(5,("Trying to load: %s\n", selected[i]));
+		if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods_name(&curmethods, *context, selected[i]))) {
+			DEBUG(1, ("Loading %s failed!\n", selected[i]));
+			free_pdb_context(context);
+			return nt_status;
+		}
+		curmethods->parent = *context;
+		DLIST_ADD_END((*context)->pdb_methods, curmethods, tmpmethods);
+		i++;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/******************************************************************
+  Make a pdb_context, given a text string.
+ *******************************************************************/
+
+NTSTATUS make_pdb_context_string(struct pdb_context **context, const char *selected) 
+{
+	NTSTATUS ret;
+	char **newsel = str_list_make(selected, NULL);
+	ret = make_pdb_context_list(context, (const char **)newsel);
+	str_list_free(&newsel);
+	return ret;
+}
+
+/******************************************************************
+ Return an already initialised pdb_context, to facilitate backward 
+ compatibility (see functions below).
+*******************************************************************/
+
+static struct pdb_context *pdb_get_static_context(BOOL reload) 
+{
+	static struct pdb_context *pdb_context = NULL;
+
+	if ((pdb_context) && (reload)) {
+		pdb_context->free_fn(&pdb_context);
+		if (NT_STATUS_IS_ERR(make_pdb_context_list(&pdb_context, lp_passdb_backend()))) {
+			return NULL;
+		}
+	}
+
+	if (!pdb_context) {
+		if (NT_STATUS_IS_ERR(make_pdb_context_list(&pdb_context, lp_passdb_backend()))) {
+			return NULL;
+		}
+	}
+
+	return pdb_context;
+}
+
+/******************************************************************
+ Backward compatibility functions for the original passdb interface
+*******************************************************************/
+
+BOOL pdb_setsampwent(BOOL update) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_setsampwent(pdb_context, update));
+}
+
+void pdb_endsampwent(void) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return;
+	}
+
+	pdb_context->pdb_endsampwent(pdb_context);
+}
+
+BOOL pdb_getsampwent(SAM_ACCOUNT *user) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_getsampwent(pdb_context, user));
+}
+
+BOOL pdb_getsampwnam(SAM_ACCOUNT *sam_acct, const char *username) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_getsampwnam(pdb_context, sam_acct, username));
+}
+
+BOOL pdb_getsampwsid(SAM_ACCOUNT *sam_acct, const DOM_SID *sid) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_getsampwsid(pdb_context, sam_acct, sid));
+}
+
+BOOL pdb_add_sam_account(SAM_ACCOUNT *sam_acct) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_add_sam_account(pdb_context, sam_acct));
+}
+
+BOOL pdb_update_sam_account(SAM_ACCOUNT *sam_acct) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_update_sam_account(pdb_context, sam_acct));
+}
+
+BOOL pdb_delete_sam_account(SAM_ACCOUNT *sam_acct) 
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->pdb_delete_sam_account(pdb_context, sam_acct));
+}
+
+BOOL pdb_getgrsid(GROUP_MAP *map, DOM_SID sid, BOOL with_priv)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_getgrsid(pdb_context, map, sid, with_priv));
+}
+
+BOOL pdb_getgrgid(GROUP_MAP *map, gid_t gid, BOOL with_priv)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_getgrgid(pdb_context, map, gid, with_priv));
+}
+
+BOOL pdb_getgrnam(GROUP_MAP *map, char *name, BOOL with_priv)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_getgrnam(pdb_context, map, name, with_priv));
+}
+
+BOOL pdb_add_group_mapping_entry(GROUP_MAP *map)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_add_group_mapping_entry(pdb_context, map));
+}
+
+BOOL pdb_update_group_mapping_entry(GROUP_MAP *map)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_update_group_mapping_entry(pdb_context, map));
+}
+
+BOOL pdb_delete_group_mapping_entry(DOM_SID sid)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_delete_group_mapping_entry(pdb_context, sid));
+}
+
+BOOL pdb_enum_group_mapping(enum SID_NAME_USE sid_name_use, GROUP_MAP **rmap,
+			    int *num_entries, BOOL unix_only, BOOL with_priv)
+{
+	struct pdb_context *pdb_context = pdb_get_static_context(False);
+
+	if (!pdb_context) {
+		return False;
+	}
+
+	return NT_STATUS_IS_OK(pdb_context->
+			       pdb_enum_group_mapping(pdb_context, sid_name_use,
+						      rmap, num_entries, unix_only,
+						      with_priv));
+}
+
+/***************************************************************
+  Initialize the static context (at smbd startup etc). 
+
+  If uninitialised, context will auto-init on first use.
+ ***************************************************************/
+
+BOOL initialize_password_db(BOOL reload)
+{	
+	return (pdb_get_static_context(reload) != NULL);
+}
+
+
+/***************************************************************************
+  Default implementations of some functions.
+ ****************************************************************************/
+
+static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *user, const char *sname)
+{
+	return NT_STATUS_NO_SUCH_USER;
+}
+
+static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
+{
+	return NT_STATUS_NO_SUCH_USER;
+}
+
+static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *newpwd)
+{
+	DEBUG(0,("this backend (%s) should not be listed as the first passdb backend! You can't add users to it.\n", methods->name));
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *newpwd)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *pwd)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_default_setsampwent(struct pdb_methods *methods, BOOL update)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_default_getsampwent(struct pdb_methods *methods, SAM_ACCOUNT *user)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static void pdb_default_endsampwent(struct pdb_methods *methods)
+{
+	return; /* NT_STATUS_NOT_IMPLEMENTED; */
+}
+
+NTSTATUS make_pdb_methods(TALLOC_CTX *mem_ctx, PDB_METHODS **methods) 
+{
+	*methods = talloc(mem_ctx, sizeof(struct pdb_methods));
+
+	if (!*methods) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ZERO_STRUCTP(*methods);
+
+	(*methods)->setsampwent = pdb_default_setsampwent;
+	(*methods)->endsampwent = pdb_default_endsampwent;
+	(*methods)->getsampwent = pdb_default_getsampwent;
+	(*methods)->getsampwnam = pdb_default_getsampwnam;
+	(*methods)->getsampwsid = pdb_default_getsampwsid;
+	(*methods)->add_sam_account = pdb_default_add_sam_account;
+	(*methods)->update_sam_account = pdb_default_update_sam_account;
+	(*methods)->delete_sam_account = pdb_default_delete_sam_account;
+
+	(*methods)->getgrsid = pdb_default_getgrsid;
+	(*methods)->getgrgid = pdb_default_getgrgid;
+	(*methods)->getgrnam = pdb_default_getgrnam;
+	(*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
+	(*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
+	(*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
+	(*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
+
+	return NT_STATUS_OK;
+}