ldap服务器源码

				/* null.c - the null backend */				/* $OpenLDAP: pkg/ldap/servers/slapd/back-null/null.c,v 1.12.2.5 2007/01/02 21:44:05 kurt Exp $ */				/* This work is part of OpenLDAP Software .				 *				 * Copyright 2002-2007 The OpenLDAP Foundation.				 * All rights reserved.				 *				 * Redistribution and use in source and binary forms, with or without				 * modification, are permitted only as authorized by the OpenLDAP				 * Public License.				 *				 * A copy of this license is available in the file LICENSE in the				 * top-level directory of the distribution or, alternatively, at				 * .				 */				/* ACKNOWLEDGEMENTS:				 * This work was originally developed by Hallvard Furuseth for inclusion				 * in OpenLDAP Software.				 */								#include "portable.h"								#include 				#include 								#include "slap.h"								struct null_info {					int	ni_bind_allowed;					ID	ni_nextid;				};												/* LDAP operations */								static int				null_back_bind( Operation *op, SlapReply *rs )				{					struct null_info *ni = (struct null_info *) op->o_bd->be_private;									if ( ni->ni_bind_allowed ) {						/* front end will send result on success (0) */						return LDAP_SUCCESS;					}									rs->sr_err = LDAP_INVALID_CREDENTIALS;					send_ldap_result( op, rs );									return rs->sr_err;				}								/* add, delete, modify, modrdn, search */				static int				null_back_success( Operation *op, SlapReply *rs )				{					rs->sr_err = LDAP_SUCCESS;					send_ldap_result( op, rs );					return 0;				}								/* compare */				static int				null_back_false( Operation *op, SlapReply *rs )				{					rs->sr_err = LDAP_COMPARE_FALSE;					send_ldap_result( op, rs );					return 0;				}												/* Slap tools */								static int				null_tool_entry_open( BackendDB *be, int mode )				{					return 0;				}								static int				null_tool_entry_close( BackendDB *be )				{					assert( be != NULL );					return 0;				}								static ID				null_tool_entry_next( BackendDB *be )				{					return NOID;				}								static Entry *				null_tool_entry_get( BackendDB *be, ID id )				{					assert( slapMode & SLAP_TOOL_MODE );					return NULL;				}								static ID				null_tool_entry_put( BackendDB *be, Entry *e, struct berval *text )				{					assert( slapMode & SLAP_TOOL_MODE );					assert( text != NULL );					assert( text->bv_val != NULL );					assert( text->bv_val[0] == '\0' );	/* overconservative? */									e->e_id = ((struct null_info *) be->be_private)->ni_nextid++;					return e->e_id;				}												/* Setup */								static int				null_back_db_config(					BackendDB	*be,					const char	*fname,					int		lineno,					int		argc,					char		**argv )				{					struct null_info *ni = (struct null_info *) be->be_private;									if ( ni == NULL ) {						fprintf( stderr, "%s: line %d: null database info is null!\n",							fname, lineno );						return 1;					}									/* bind requests allowed */					if ( strcasecmp( argv[0], "bind" ) == 0 ) {						if ( argc < 2 ) {							fprintf( stderr,					"%s: line %d: missing  in \"bind \" line\n",							         fname, lineno );							return 1;						}						ni->ni_bind_allowed = strcasecmp( argv[1], "off" );									/* anything else */					} else {						return SLAP_CONF_UNKNOWN;					}									return 0;				}								static int				null_back_db_init( BackendDB *be )				{					struct null_info *ni = ch_calloc( 1, sizeof(struct null_info) );					ni->ni_bind_allowed = 0;					ni->ni_nextid = 1;					be->be_private = ni;					return 0;				}								static int				null_back_db_destroy( Backend *be )				{					free( be->be_private );					return 0;				}												int				null_back_initialize( BackendInfo *bi )				{					bi->bi_open = 0;					bi->bi_close = 0;					bi->bi_config = 0;					bi->bi_destroy = 0;									bi->bi_db_init = null_back_db_init;					bi->bi_db_config = null_back_db_config;					bi->bi_db_open = 0;					bi->bi_db_close = 0;					bi->bi_db_destroy = null_back_db_destroy;									bi->bi_op_bind = null_back_bind;					bi->bi_op_unbind = 0;					bi->bi_op_search = null_back_success;					bi->bi_op_compare = null_back_false;					bi->bi_op_modify = null_back_success;					bi->bi_op_modrdn = null_back_success;					bi->bi_op_add = null_back_success;					bi->bi_op_delete = null_back_success;					bi->bi_op_abandon = 0;									bi->bi_extended = 0;									bi->bi_chk_referrals = 0;									bi->bi_connection_init = 0;					bi->bi_connection_destroy = 0;									bi->bi_tool_entry_open = null_tool_entry_open;					bi->bi_tool_entry_close = null_tool_entry_close;					bi->bi_tool_entry_first = null_tool_entry_next;					bi->bi_tool_entry_next = null_tool_entry_next;					bi->bi_tool_entry_get = null_tool_entry_get;					bi->bi_tool_entry_put = null_tool_entry_put;									return 0;				}								#if SLAPD_NULL == SLAPD_MOD_DYNAMIC								/* conditionally define the init_module() function */				SLAP_BACKEND_INIT_MODULE( null )								#endif /* SLAPD_NULL == SLAPD_MOD_DYNAMIC */