pdb_interface.c

samba-3.0.22.tar.gz 编译smb服务器的源码

	return context->pdb_methods->enum_group_members(context->pdb_methods,
							mem_ctx, group,
							pp_member_rids,
							p_num_members);
}

static NTSTATUS context_enum_group_memberships(struct pdb_context *context,
					       const char *username,
					       gid_t primary_gid,
					       DOM_SID **pp_sids, gid_t **pp_gids,
					       size_t *p_num_groups)
{
	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_memberships(context->pdb_methods, username,
				       primary_gid, pp_sids, pp_gids, p_num_groups);
}

static NTSTATUS context_find_alias(struct pdb_context *context,
				   const char *name, 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->find_alias(context->pdb_methods,
						name, sid);
}

static NTSTATUS context_create_alias(struct pdb_context *context,
				     const char *name, uint32 *rid)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->create_alias(context->pdb_methods,
						  name, rid);
}

static NTSTATUS context_delete_alias(struct pdb_context *context,
				     const 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_alias(context->pdb_methods, sid);
}

static NTSTATUS context_get_aliasinfo(struct pdb_context *context,
				      const DOM_SID *sid,
				      struct acct_info *info)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->get_aliasinfo(context->pdb_methods,
						   sid, info);
}

static NTSTATUS context_set_aliasinfo(struct pdb_context *context,
				      const DOM_SID *sid,
				      struct acct_info *info)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->set_aliasinfo(context->pdb_methods,
						   sid, info);
}

static NTSTATUS context_add_aliasmem(struct pdb_context *context,
				     const DOM_SID *alias,
				     const DOM_SID *member)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->add_aliasmem(context->pdb_methods,
						  alias, member);
}
	
static NTSTATUS context_del_aliasmem(struct pdb_context *context,
				     const DOM_SID *alias,
				     const DOM_SID *member)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->del_aliasmem(context->pdb_methods,
						  alias, member);
}
	
static NTSTATUS context_enum_aliasmem(struct pdb_context *context,
				      const DOM_SID *alias, DOM_SID **pp_members,
				      size_t *p_num)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->enum_aliasmem(context->pdb_methods,
						   alias, pp_members, p_num);
}
	
static NTSTATUS context_enum_alias_memberships(struct pdb_context *context,
					       TALLOC_CTX *mem_ctx,
					       const DOM_SID *domain_sid,
					       const DOM_SID *members,
					       size_t num_members,
					       uint32 **pp_alias_rids,
					       size_t *p_num_alias_rids)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->
		enum_alias_memberships(context->pdb_methods, mem_ctx,
				       domain_sid, members, num_members,
				       pp_alias_rids, p_num_alias_rids);
}

static NTSTATUS context_lookup_rids(struct pdb_context *context,
				    const DOM_SID *domain_sid,
				    size_t num_rids,
				    uint32 *rids,
				    const char **pp_names,
				    uint32 *pp_attrs)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->lookup_rids(context->pdb_methods,
						 domain_sid, num_rids,
						 rids, pp_names, pp_attrs);
}

static NTSTATUS context_get_account_policy(struct pdb_context *context,
					   int policy_index, uint32 *value)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->get_account_policy(context->pdb_methods,
							policy_index, value);
}

static NTSTATUS context_set_account_policy(struct pdb_context *context,
					   int policy_index, uint32 value)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->set_account_policy(context->pdb_methods,
							policy_index, value);
}

static NTSTATUS context_get_seq_num(struct pdb_context *context, time_t *seq_num)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return ret;
	}

	return context->pdb_methods->get_seq_num(context->pdb_methods, seq_num);
}
	
/******************************************************************
  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;
}

static BOOL context_search_users(struct pdb_context *context,
				 struct pdb_search *search, uint16 acct_flags)
{
	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return False;
	}

	return context->pdb_methods->search_users(context->pdb_methods,
						  search, acct_flags);
}

static BOOL context_search_groups(struct pdb_context *context,
				  struct pdb_search *search)
{
	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return False;
	}

	return context->pdb_methods->search_groups(context->pdb_methods,
						   search);
}

static BOOL context_search_aliases(struct pdb_context *context,
				   struct pdb_search *search,
				   const DOM_SID *sid)
{
	if ((!context) || (!context->pdb_methods)) {
		DEBUG(0, ("invalid pdb_context specified!\n"));
		return False;
	}

	return context->pdb_methods->search_aliases(context->pdb_methods,
						    search, sid);
}

/******************************************************************
  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_char(module_location, ' ', ' ');
	}

	trim_char(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) { 
		DEBUG(2,("No builtin backend found, trying to load plugin\n"));
		if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
			DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
			SAFE_FREE(module_name);
			return NT_STATUS_UNSUCCESSFUL;
		}
	}
	
	/* No such backend found */
	if(!entry) { 
		DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
		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_P(mem_ctx, struct pdb_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_rename_sam_account = context_rename_sam_account;
	(*context)->pdb_update_login_attempts = context_update_login_attempts;
	(*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)->pdb_enum_group_members = context_enum_group_members;
	(*context)->pdb_enum_group_memberships = context_enum_group_memberships;

	(*context)->pdb_find_alias = context_find_alias;
	(*context)->pdb_create_alias = context_create_alias;
	(*context)->pdb_delete_alias = context_delete_alias;
	(*context)->pdb_get_aliasinfo = context_get_aliasinfo;
	(*context)->pdb_set_aliasinfo = context_set_aliasinfo;
	(*context)->pdb_add_aliasmem = context_add_aliasmem;
	(*context)->pdb_del_aliasmem = context_del_aliasmem;
	(*context)->pdb_enum_aliasmem = context_enum_aliasmem;
	(*context)->pdb_enum_alias_memberships = context_enum_alias_memberships;
	(*context)->pdb_lookup_rids = context_lookup_rids;

	(*context)->pdb_get_account_policy = context_get_account_policy;
	(*context)->pdb_set_account_policy = context_set_account_policy;

	(*context)->pdb_get_seq_num = context_get_seq_num;

	(*context)->pdb_search_users = context_search_users;
	(*context)->pdb_search_groups = context_search_groups;
	(*context)->pdb_search_aliases = context_search_aliases;

	(*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;
	BOOL have_guest = False;

	if (!NT_STATUS_IS_OK(nt_status = make_pdb_context(context))) {
		return nt_status;
	}

	if (!selected) {
		DEBUG(0, ("ERROR: empty passdb backend list!\n"));
		return nt_status;
	}

	while (selected[i]){
		if (strcmp(selected[i], "guest") == 0) {
			have_guest = True;
		}
		/* 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++;
	}

	if (have_guest)
		return NT_STATUS_OK;

	if ( (lp_guestaccount() == NULL) ||
	     (*lp_guestaccount() == '\0') ) {
		/* We explicitly don't want guest access. No idea what
		   else that breaks, but be it that way. */
		return NT_STATUS_OK;
	}

	if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods_name(&curmethods,
							       *context,
							       "guest"))) {
		DEBUG(1, ("Loading guest module failed!\n"));
		free_pdb_context(context);
		return nt_status;
	}

	curmethods->parent = *context;
	DLIST_ADD_END((*context)->pdb_methods, curmethods, tmpmethods);
	
	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_OK(make_pdb_context_list(&pdb_context, lp_passdb_backend()))) {
			return NULL;
		}
	}

	if (!pdb_context) {
		if (!NT_STATUS_IS_OK(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, uint16 acb_mask) 
{
	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, acb_mask));
}

void pdb_endsampwent(void) 
{
	struct pdb_context *pdb_context = pdb_get_static_context(False);