text: /* $OpenLDAP$ */
  /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   *
   * Copyright 1999-2013 The OpenLDAP Foundation.
   * Portions Copyright 2001-2003 Pierangelo Masarati.
   * Portions Copyright 1999-2003 Howard Chu.
   * 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
   * <http://www.OpenLDAP.org/license.html>.
   */
  /* ACKNOWLEDGEMENTS:
   * This work was initially developed by the Howard Chu for inclusion
   * in OpenLDAP Software and subsequently enhanced by Pierangelo
   * Masarati.
   */
  
  #include "portable.h"
  
  #include <stdio.h>
  
  #include <ac/string.h>
  #include <ac/socket.h>
  
  #include "slap.h"
  #include "config.h"
  #include "lutil.h"
  #include "../back-ldap/back-ldap.h"
  #include "back-meta.h"
  
  #ifdef LDAP_DEVEL
  #define SLAP_AUTH_DN	1
  #endif
  
  static ConfigDriver meta_back_cf_gen;
  static ConfigLDAPadd meta_ldadd;
  static ConfigCfAdd meta_cfadd;
  
  static int ldap_back_map_config(
  	ConfigArgs *c,
  	struct ldapmap	*oc_map,
  	struct ldapmap	*at_map );
  
  /* Three sets of enums:
   *	1) attrs that are only valid in the base config
   *	2) attrs that are valid in base or target
   *	3) attrs that are only valid in a target
   */
  
  /* Base attrs */
  enum {
  	LDAP_BACK_CFG_CONN_TTL = 1,
  	LDAP_BACK_CFG_DNCACHE_TTL,
  	LDAP_BACK_CFG_IDLE_TIMEOUT,
  	LDAP_BACK_CFG_ONERR,
  	LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER,
  	LDAP_BACK_CFG_SINGLECONN,
  	LDAP_BACK_CFG_USETEMP,
  	LDAP_BACK_CFG_CONNPOOLMAX,
  	LDAP_BACK_CFG_LAST_BASE
  };
  
  /* Base or target */
  enum {
  	LDAP_BACK_CFG_BIND_TIMEOUT = LDAP_BACK_CFG_LAST_BASE,
  	LDAP_BACK_CFG_CANCEL,
  	LDAP_BACK_CFG_CHASE,
  	LDAP_BACK_CFG_CLIENT_PR,
  	LDAP_BACK_CFG_DEFAULT_T,
  	LDAP_BACK_CFG_NETWORK_TIMEOUT,
  	LDAP_BACK_CFG_NOREFS,
  	LDAP_BACK_CFG_NOUNDEFFILTER,
  	LDAP_BACK_CFG_NRETRIES,
  	LDAP_BACK_CFG_QUARANTINE,
  	LDAP_BACK_CFG_REBIND,
  	LDAP_BACK_CFG_TIMEOUT,
  	LDAP_BACK_CFG_VERSION,
  	LDAP_BACK_CFG_ST_REQUEST,
  	LDAP_BACK_CFG_T_F,
  	LDAP_BACK_CFG_TLS,
  	LDAP_BACK_CFG_LAST_BOTH
  };
  
  /* Target attrs */
  enum {
  	LDAP_BACK_CFG_URI = LDAP_BACK_CFG_LAST_BOTH,
  	LDAP_BACK_CFG_ACL_AUTHCDN,
  	LDAP_BACK_CFG_ACL_PASSWD,
  	LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
  	LDAP_BACK_CFG_IDASSERT_BIND,
  	LDAP_BACK_CFG_REWRITE,
  	LDAP_BACK_CFG_SUFFIXM,
  	LDAP_BACK_CFG_MAP,
  	LDAP_BACK_CFG_SUBTREE_EX,
  	LDAP_BACK_CFG_SUBTREE_IN,
  	LDAP_BACK_CFG_PSEUDOROOTDN,
  	LDAP_BACK_CFG_PSEUDOROOTPW,
  	LDAP_BACK_CFG_KEEPALIVE,
  
  	LDAP_BACK_CFG_LAST
  };
  
  static ConfigTable metacfg[] = {
  	{ "uri", "uri", 2, 0, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_URI,
  		meta_back_cf_gen, "( OLcfgDbAt:0.14 "
  			"NAME 'olcDbURI' "
  			"DESC 'URI (list) for remote DSA' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "tls", "what", 2, 0, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_TLS,
  		meta_back_cf_gen, "( OLcfgDbAt:3.1 "
  			"NAME 'olcDbStartTLS' "
  			"DESC 'StartTLS' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "acl-authcDN", "DN", 2, 2, 0,
  		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_ACL_AUTHCDN,
  		meta_back_cf_gen, "( OLcfgDbAt:3.2 "
  			"NAME 'olcDbACLAuthcDn' "
  			"DESC 'Remote ACL administrative identity' "
  			"OBSOLETE "
  			"SYNTAX OMsDN "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	/* deprecated, will be removed; aliases "acl-authcDN" */
  	{ "binddn", "DN", 2, 2, 0,
  		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_ACL_AUTHCDN,
  		meta_back_cf_gen, NULL, NULL, NULL },
  	{ "acl-passwd", "cred", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_ACL_PASSWD,
  		meta_back_cf_gen, "( OLcfgDbAt:3.3 "
  			"NAME 'olcDbACLPasswd' "
  			"DESC 'Remote ACL administrative identity credentials' "
  			"OBSOLETE "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	/* deprecated, will be removed; aliases "acl-passwd" */
  	{ "bindpw", "cred", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_ACL_PASSWD,
  		meta_back_cf_gen, NULL, NULL, NULL },
  	{ "idassert-bind", "args", 2, 0, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_BIND,
  		meta_back_cf_gen, "( OLcfgDbAt:3.7 "
  			"NAME 'olcDbIDAssertBind' "
  			"DESC 'Remote Identity Assertion administrative identity auth bind configuration' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "idassert-authzFrom", "authzRule", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
  		meta_back_cf_gen, "( OLcfgDbAt:3.9 "
  			"NAME 'olcDbIDAssertAuthzFrom' "
  			"DESC 'Remote Identity Assertion authz rules' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString "
  			"X-ORDERED 'VALUES' )",
  		NULL, NULL },
  	{ "rebind-as-user", "true|FALSE", 1, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_REBIND,
  		meta_back_cf_gen, "( OLcfgDbAt:3.10 "
  			"NAME 'olcDbRebindAsUser' "
  			"DESC 'Rebind as user' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "chase-referrals", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_CHASE,
  		meta_back_cf_gen, "( OLcfgDbAt:3.11 "
  			"NAME 'olcDbChaseReferrals' "
  			"DESC 'Chase referrals' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "t-f-support", "true|FALSE|discover", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_T_F,
  		meta_back_cf_gen, "( OLcfgDbAt:3.12 "
  			"NAME 'olcDbTFSupport' "
  			"DESC 'Absolute filters support' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "timeout", "timeout(list)", 2, 0, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_TIMEOUT,
  		meta_back_cf_gen, "( OLcfgDbAt:3.14 "
  			"NAME 'olcDbTimeout' "
  			"DESC 'Per-operation timeouts' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "idle-timeout", "timeout", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_IDLE_TIMEOUT,
  		meta_back_cf_gen, "( OLcfgDbAt:3.15 "
  			"NAME 'olcDbIdleTimeout' "
  			"DESC 'connection idle timeout' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "conn-ttl", "ttl", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_CONN_TTL,
  		meta_back_cf_gen, "( OLcfgDbAt:3.16 "
  			"NAME 'olcDbConnTtl' "
  			"DESC 'connection ttl' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "network-timeout", "timeout", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_NETWORK_TIMEOUT,
  		meta_back_cf_gen, "( OLcfgDbAt:3.17 "
  			"NAME 'olcDbNetworkTimeout' "
  			"DESC 'connection network timeout' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "protocol-version", "version", 2, 2, 0,
  		ARG_MAGIC|ARG_INT|LDAP_BACK_CFG_VERSION,
  		meta_back_cf_gen, "( OLcfgDbAt:3.18 "
  			"NAME 'olcDbProtocolVersion' "
  			"DESC 'protocol version' "
  			"SYNTAX OMsInteger "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "single-conn", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_SINGLECONN,
  		meta_back_cf_gen, "( OLcfgDbAt:3.19 "
  			"NAME 'olcDbSingleConn' "
  			"DESC 'cache a single connection per identity' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "cancel", "ABANDON|ignore|exop", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_CANCEL,
  		meta_back_cf_gen, "( OLcfgDbAt:3.20 "
  			"NAME 'olcDbCancel' "
  			"DESC 'abandon/ignore/exop operations when appropriate' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "quarantine", "retrylist", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_QUARANTINE,
  		meta_back_cf_gen, "( OLcfgDbAt:3.21 "
  			"NAME 'olcDbQuarantine' "
  			"DESC 'Quarantine database if connection fails and retry according to rule' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "use-temporary-conn", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_USETEMP,
  		meta_back_cf_gen, "( OLcfgDbAt:3.22 "
  			"NAME 'olcDbUseTemporaryConn' "
  			"DESC 'Use temporary connections if the cached one is busy' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "conn-pool-max", "<n>", 2, 2, 0,
  		ARG_MAGIC|ARG_INT|LDAP_BACK_CFG_CONNPOOLMAX,
  		meta_back_cf_gen, "( OLcfgDbAt:3.23 "
  			"NAME 'olcDbConnectionPoolMax' "
  			"DESC 'Max size of privileged connections pool' "
  			"SYNTAX OMsInteger "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  	{ "session-tracking-request", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_ST_REQUEST,
  		meta_back_cf_gen, "( OLcfgDbAt:3.24 "
  			"NAME 'olcDbSessionTrackingRequest' "
  			"DESC 'Add session tracking control to proxied requests' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
  	{ "norefs", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_NOREFS,
  		meta_back_cf_gen, "( OLcfgDbAt:3.25 "
  			"NAME 'olcDbNoRefs' "
  			"DESC 'Do not return search reference responses' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "noundeffilter", "true|FALSE", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_NOUNDEFFILTER,
  		meta_back_cf_gen, "( OLcfgDbAt:3.26 "
  			"NAME 'olcDbNoUndefFilter' "
  			"DESC 'Do not propagate undefined search filters' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  
  	{ "rewrite", "arglist", 2, 0, STRLENOF( "rewrite" ),
  		ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
  		meta_back_cf_gen, "( OLcfgDbAt:3.101 "
  			"NAME 'olcDbRewrite' "
  			"DESC 'DN rewriting rules' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString "
  			"X-ORDERED 'VALUES' )",
  		NULL, NULL },
  	{ "suffixmassage", "virtual> <real", 2, 3, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_SUFFIXM,
  		meta_back_cf_gen, NULL, NULL, NULL },
  
  	{ "map", "attribute|objectClass> [*|<local>] *|<remote", 3, 4, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_MAP,
  		meta_back_cf_gen, "( OLcfgDbAt:3.102 "
  			"NAME 'olcDbMap' "
  			"DESC 'Map attribute and objectclass names' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString "
  			"X-ORDERED 'VALUES' )",
  		NULL, NULL },
  
  	{ "subtree-exclude", "pattern", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_SUBTREE_EX,
  		meta_back_cf_gen, "( OLcfgDbAt:3.103 "
  			"NAME 'olcDbSubtreeExclude' "
  			"DESC 'DN of subtree to exclude from target' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString )",
  		NULL, NULL },
  	{ "subtree-include", "pattern", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_SUBTREE_IN,
  		meta_back_cf_gen, "( OLcfgDbAt:3.104 "
  			"NAME 'olcDbSubtreeInclude' "
  			"DESC 'DN of subtree to include in target' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString )",
  		NULL, NULL },
  	{ "default-target", "[none|<target ID>]", 1, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_DEFAULT_T,
  		meta_back_cf_gen, "( OLcfgDbAt:3.105 "
  			"NAME 'olcDbDefaultTarget' "
  			"DESC 'Specify the default target' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "dncache-ttl", "ttl", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_DNCACHE_TTL,
  		meta_back_cf_gen, "( OLcfgDbAt:3.106 "
  			"NAME 'olcDbDnCacheTtl' "
  			"DESC 'dncache ttl' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "bind-timeout", "microseconds", 2, 2, 0,
  		ARG_MAGIC|ARG_ULONG|LDAP_BACK_CFG_BIND_TIMEOUT,
  		meta_back_cf_gen, "( OLcfgDbAt:3.107 "
  			"NAME 'olcDbBindTimeout' "
  			"DESC 'bind timeout' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "onerr", "CONTINUE|report|stop", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_ONERR,
  		meta_back_cf_gen, "( OLcfgDbAt:3.108 "
  			"NAME 'olcDbOnErr' "
  			"DESC 'error handling' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "pseudoroot-bind-defer", "TRUE|false", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER,
  		meta_back_cf_gen, "( OLcfgDbAt:3.109 "
  			"NAME 'olcDbPseudoRootBindDefer' "
  			"DESC 'error handling' "
  			"SYNTAX OMsBoolean "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "root-bind-defer", "TRUE|false", 2, 2, 0,
  		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER,
  		meta_back_cf_gen, NULL, NULL, NULL },
  	{ "pseudorootdn", "dn", 2, 2, 0,
  		ARG_MAGIC|ARG_DN|LDAP_BACK_CFG_PSEUDOROOTDN,
  		meta_back_cf_gen, NULL, NULL, NULL },
  	{ "pseudorootpw", "password", 2, 2, 0,
  		ARG_MAGIC|ARG_STRING|LDAP_BACK_CFG_PSEUDOROOTDN,
  		meta_back_cf_gen, NULL, NULL, NULL },
  	{ "nretries", "NEVER|forever|<number>", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_NRETRIES,
  		meta_back_cf_gen, "( OLcfgDbAt:3.110 "
  			"NAME 'olcDbNretries' "
  			"DESC 'retry handling' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  	{ "client-pr", "accept-unsolicited|disable|<size>", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_CLIENT_PR,
  		meta_back_cf_gen, "( OLcfgDbAt:3.111 "
  			"NAME 'olcDbClientPr' "
  			"DESC 'PagedResults handling' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  
  	{ "", "", 0, 0, 0, ARG_IGNORED,
  		NULL, "( OLcfgDbAt:3.100 NAME 'olcMetaSub' "
  			"DESC 'Placeholder to name a Target entry' "
  			"EQUALITY caseIgnoreMatch "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE X-ORDERED 'SIBLINGS' )", NULL, NULL },
  
  	{ "keepalive", "keepalive", 2, 2, 0,
  		ARG_MAGIC|LDAP_BACK_CFG_KEEPALIVE,
  		meta_back_cf_gen, "( OLcfgDbAt:3.29 "
  			"NAME 'olcDbKeepalive' "
  			"DESC 'TCP keepalive' "
  			"SYNTAX OMsDirectoryString "
  			"SINGLE-VALUE )",
  		NULL, NULL },
  
  	{ NULL, NULL, 0, 0, 0, ARG_IGNORED,
  		NULL, NULL, NULL, NULL }
  };
  
  #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  #define	ST_ATTR "$ olcDbSessionTrackingRequest "
  #else
  #define	ST_ATTR ""
  #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
  
  #define COMMON_ATTRS	\
  			"$ olcDbBindTimeout " \
  			"$ olcDbCancel " \
  			"$ olcDbChaseReferrals " \
  			"$ olcDbClientPr " \
  			"$ olcDbDefaultTarget " \
  			"$ olcDbNetworkTimeout " \
  			"$ olcDbNoRefs " \
  			"$ olcDbNoUndefFilter " \
  			"$ olcDbNretries " \
  			"$ olcDbProtocolVersion " \
  			"$ olcDbQuarantine " \
  			"$ olcDbRebindAsUser " \
  			ST_ATTR \
  			"$ olcDbStartTLS " \
  			"$ olcDbTFSupport "
  
  static ConfigOCs metaocs[] = {
  	{ "( OLcfgDbOc:3.2 "
  		"NAME 'olcMetaConfig' "
  		"DESC 'Meta backend configuration' "
  		"SUP olcDatabaseConfig "
  		"MAY ( olcDbConnTtl "
  			"$ olcDbDnCacheTtl "
  			"$ olcDbIdleTimeout "
  			"$ olcDbOnErr "
  			"$ olcDbPseudoRootBindDefer "
  			"$ olcDbSingleConn "
  			"$ olcDbUseTemporaryConn "
  			"$ olcDbConnectionPoolMax "
  
  			/* defaults, may be overridden per-target */
  			COMMON_ATTRS
  		") )",
  			Cft_Database, metacfg, NULL, meta_cfadd },
  	{ "( OLcfgDbOc:3.3 "
  		"NAME 'olcMetaTargetConfig' "
  		"DESC 'Meta target configuration' "
  		"SUP olcConfig STRUCTURAL "
  		"MUST ( olcMetaSub $ olcDbURI ) "
  		"MAY ( olcDbACLAuthcDn "
  			"$ olcDbACLPasswd "
  			"$ olcDbIDAssertAuthzFrom "
  			"$ olcDbIDAssertBind "
  			"$ olcDbMap "
  			"$ olcDbRewrite "
  			"$ olcDbSubtreeExclude "
  			"$ olcDbSubtreeInclude "
  			"$ olcDbTimeout "
  			"$ olcDbKeepalive "
  
  			/* defaults may be inherited */
  			COMMON_ATTRS
  		") )",
  			Cft_Misc, metacfg, meta_ldadd },
  	{ NULL, 0, NULL }
  };
  
  static int
  meta_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *c )
  {
  	if ( p->ce_type != Cft_Database || !p->ce_be ||
  		p->ce_be->be_cf_ocs != metaocs )
  		return LDAP_CONSTRAINT_VIOLATION;
  
  	c->be = p->ce_be;
  	return LDAP_SUCCESS;
  }
  
  static int
  meta_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *c )
  {
  	metainfo_t	*mi = ( metainfo_t * )c->be->be_private;
  	struct berval bv;
  	int i;
  
  	bv.bv_val = c->cr_msg;
  	for ( i=0; i<mi->mi_ntargets; i++ ) {
  		bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg),
  			"olcMetaSub=" SLAP_X_ORDERED_FMT "uri", i );
  		c->ca_private = mi->mi_targets[i];
  		c->valx = i;
  		config_build_entry( op, rs, p->e_private, c,
  			&bv, &metaocs[1], NULL );
  	}
  
  	return LDAP_SUCCESS;
  }
  
  static int
  meta_rwi_init( struct rewrite_info **rwm_rw )
  {
  	char			*rargv[ 3 ];
  
  	*rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
  	if ( *rwm_rw == NULL ) {
  		return -1;
  	}
  	/*
  	 * the filter rewrite as a string must be disabled
  	 * by default; it can be re-enabled by adding rules;
  	 * this creates an empty rewriteContext
  	 */
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "searchFilter";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( *rwm_rw, "<suffix massage>", 1, 2, rargv );
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "default";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( *rwm_rw, "<suffix massage>", 1, 2, rargv );
  
  	return 0;
  }
  
  static int
  meta_back_new_target(
  	metatarget_t	**mtp )
  {
  	metatarget_t		*mt;
  
  	*mtp = NULL;
  
  	mt = ch_calloc( sizeof( metatarget_t ), 1 );
  
  	if ( meta_rwi_init( &mt->mt_rwmap.rwm_rw )) {
  		ch_free( mt );
  		return -1;
  	}
  
  	ldap_pvt_thread_mutex_init( &mt->mt_uri_mutex );
  
  	mt->mt_idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
  	mt->mt_idassert_authmethod = LDAP_AUTH_NONE;
  	mt->mt_idassert_tls = SB_TLS_DEFAULT;
  
  	/* by default, use proxyAuthz control on each operation */
  	mt->mt_idassert_flags = LDAP_BACK_AUTH_PRESCRIPTIVE;
  
  	*mtp = mt;
  
  	return 0;
  }
  
  /* Validation for suffixmassage_config */
  static int
  meta_suffixm_config(
  	ConfigArgs *c,
  	int argc,
  	char **argv,
  	metatarget_t *mt
  )
  {
  	BackendDB 	*tmp_bd;
  	struct berval	dn, nvnc, pvnc, nrnc, prnc;
  	int j, rc;
  
  	/*
  	 * syntax:
  	 *
  	 * 	suffixmassage <suffix> <massaged suffix>
  	 *
  	 * the <suffix> field must be defined as a valid suffix
  	 * (or suffixAlias?) for the current database;
  	 * the <massaged suffix> shouldn't have already been
  	 * defined as a valid suffix or suffixAlias for the
  	 * current server
  	 */
  
  	ber_str2bv( argv[ 1 ], 0, 0, &dn );
  	if ( dnPrettyNormal( NULL, &dn, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
  		snprintf( c->cr_msg, sizeof( c->cr_msg ),
  			"suffix \"%s\" is invalid",
  			argv[1] );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		return 1;
  	}
  
  	for ( j = 0; !BER_BVISNULL( &c->be->be_nsuffix[ j ] ); j++ ) {
  		if ( dnIsSuffix( &nvnc, &c->be->be_nsuffix[ 0 ] ) ) {
  			break;
  		}
  	}
  
  	if ( BER_BVISNULL( &c->be->be_nsuffix[ j ] ) ) {
  		snprintf( c->cr_msg, sizeof( c->cr_msg ),
  			"suffix \"%s\" must be within the database naming context",
  			argv[1] );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		free( pvnc.bv_val );
  		free( nvnc.bv_val );
  		return 1;
  	}
  
  	ber_str2bv( argv[ 2 ], 0, 0, &dn );
  	if ( dnPrettyNormal( NULL, &dn, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
  		snprintf( c->cr_msg, sizeof( c->cr_msg ),
  			"massaged suffix \"%s\" is invalid",
  			argv[2] );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		free( pvnc.bv_val );
  		free( nvnc.bv_val );
  		return 1;
  	}
  
  	tmp_bd = select_backend( &nrnc, 0 );
  	if ( tmp_bd != NULL && tmp_bd->be_private == c->be->be_private ) {
  		Debug( LDAP_DEBUG_ANY,
  	"%s: warning: <massaged suffix> \"%s\" resolves to this database, in "
  	"\"suffixMassage <suffix> <massaged suffix>\"\n",
  			c->log, prnc.bv_val, 0 );
  	}
  
  	/*
  	 * The suffix massaging is emulated by means of the
  	 * rewrite capabilities
  	 */
  	rc = suffix_massage_config( mt->mt_rwmap.rwm_rw,
  			&pvnc, &nvnc, &prnc, &nrnc );
  
  	free( pvnc.bv_val );
  	free( nvnc.bv_val );
  	free( prnc.bv_val );
  	free( nrnc.bv_val );
  
  	return rc;
  }
  
  static int
  slap_bv_x_ordered_unparse( BerVarray in, BerVarray *out )
  {
  	int		i;
  	BerVarray	bva = NULL;
  	char		ibuf[32], *ptr;
  	struct berval	idx;
  
  	assert( in != NULL );
  
  	for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
  		/* count'em */ ;
  
  	if ( i == 0 ) {
  		return 1;
  	}
  
  	idx.bv_val = ibuf;
  
  	bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
  	BER_BVZERO( &bva[ 0 ] );
  
  	for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
  		idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), SLAP_X_ORDERED_FMT, i );
  		if ( idx.bv_len >= sizeof( ibuf ) ) {
  			ber_bvarray_free( bva );
  			return 1;
  		}
  
  		bva[i].bv_len = idx.bv_len + in[i].bv_len;
  		bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
  		ptr = lutil_strcopy( bva[i].bv_val, ibuf );
  		ptr = lutil_strcopy( ptr, in[i].bv_val );
  		*ptr = '\0';
  		BER_BVZERO( &bva[ i + 1 ] );
  	}
  
  	*out = bva;
  	return 0;
  }
  
  int
  meta_subtree_free( metasubtree_t *ms )
  {
  	switch ( ms->ms_type ) {
  	case META_ST_SUBTREE:
  	case META_ST_SUBORDINATE:
  		ber_memfree( ms->ms_dn.bv_val );
  		break;
  
  	case META_ST_REGEX:
  		regfree( &ms->ms_regex );
  		ber_memfree( ms->ms_regex_pattern.bv_val );
  		break;
  
  	default:
  		return -1;
  	}
  
  	ch_free( ms );
  	return 0;
  }
  
  int
  meta_subtree_destroy( metasubtree_t *ms )
  {
  	if ( ms->ms_next ) {
  		meta_subtree_destroy( ms->ms_next );
  	}
  
  	return meta_subtree_free( ms );
  }
  
  static struct berval st_styles[] = {
  	BER_BVC("subtree"),
  	BER_BVC("children"),
  	BER_BVC("regex")
  };
  
  static int
  meta_subtree_unparse(
  	ConfigArgs *c,
  	metatarget_t *mt )
  {
  	metasubtree_t	*ms;
  	struct berval bv, *style;
  
  	if ( !mt->mt_subtree )
  		return 1;
  
  	/* can only be one of exclude or include */
  	if (( c->type == LDAP_BACK_CFG_SUBTREE_EX ) ^ mt->mt_subtree_exclude )
  		return 1;
  
  	bv.bv_val = c->cr_msg;
  	for ( ms=mt->mt_subtree; ms; ms=ms->ms_next ) {
  		if (ms->ms_type == META_ST_SUBTREE)
  			style = &st_styles[0];
  		else if ( ms->ms_type == META_ST_SUBORDINATE )
  			style = &st_styles[1];
  		else if ( ms->ms_type == META_ST_REGEX )
  			style = &st_styles[2];
  		else {
  			assert(0);
  			continue;
  		}
  		bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg),
  			"dn.%s:%s", style->bv_val, ms->ms_dn.bv_val );
  		value_add_one( &c->rvalue_vals, &bv );
  	}
  	return 0;
  }
  
  static int
  meta_subtree_config(
  	metatarget_t *mt,
  	ConfigArgs *c )
  {
  	meta_st_t	type = META_ST_SUBTREE;
  	char		*pattern;
  	struct berval	ndn = BER_BVNULL;
  	metasubtree_t	*ms = NULL;
  
  	if ( c->type == LDAP_BACK_CFG_SUBTREE_EX ) {
  		if ( mt->mt_subtree && !mt->mt_subtree_exclude ) {
  			snprintf( c->cr_msg, sizeof(c->cr_msg),
  				"\"subtree-exclude\" incompatible with previous \"subtree-include\" directives" );
  			return 1;
  		}
  
  		mt->mt_subtree_exclude = 1;
  
  	} else {
  		if ( mt->mt_subtree && mt->mt_subtree_exclude ) {
  			snprintf( c->cr_msg, sizeof(c->cr_msg),
  				"\"subtree-include\" incompatible with previous \"subtree-exclude\" directives" );
  			return 1;
  		}
  	}
  
  	pattern = c->argv[1];
  	if ( strncasecmp( pattern, "dn", STRLENOF( "dn" ) ) == 0 ) {
  		char *style;
  
  		pattern = &pattern[STRLENOF( "dn")];
  
  		if ( pattern[0] == '.' ) {
  			style = &pattern[1];
  
  			if ( strncasecmp( style, "subtree", STRLENOF( "subtree" ) ) == 0 ) {
  				type = META_ST_SUBTREE;
  				pattern = &style[STRLENOF( "subtree" )];
  
  			} else if ( strncasecmp( style, "children", STRLENOF( "children" ) ) == 0 ) {
  				type = META_ST_SUBORDINATE;
  				pattern = &style[STRLENOF( "children" )];
  
  			} else if ( strncasecmp( style, "sub", STRLENOF( "sub" ) ) == 0 ) {
  				type = META_ST_SUBTREE;
  				pattern = &style[STRLENOF( "sub" )];
  
  			} else if ( strncasecmp( style, "regex", STRLENOF( "regex" ) ) == 0 ) {
  				type = META_ST_REGEX;
  				pattern = &style[STRLENOF( "regex" )];
  
  			} else {
  				snprintf( c->cr_msg, sizeof(c->cr_msg), "unknown style in \"dn.<style>\"" );
  				return 1;
  			}
  		}
  
  		if ( pattern[0] != ':' ) {
  			snprintf( c->cr_msg, sizeof(c->cr_msg), "missing colon after \"dn.<style>\"" );
  			return 1;
  		}
  		pattern++;
  	}
  
  	switch ( type ) {
  	case META_ST_SUBTREE:
  	case META_ST_SUBORDINATE: {
  		struct berval dn;
  
  		ber_str2bv( pattern, 0, 0, &dn );
  		if ( dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL )
  			!= LDAP_SUCCESS )
  		{
  			snprintf( c->cr_msg, sizeof(c->cr_msg), "DN=\"%s\" is invalid", pattern );
  			return 1;
  		}
  
  		if ( !dnIsSuffix( &ndn, &mt->mt_nsuffix ) ) {
  			snprintf( c->cr_msg, sizeof(c->cr_msg),
  				"DN=\"%s\" is not a subtree of target \"%s\"",
  				pattern, mt->mt_nsuffix.bv_val );
  			ber_memfree( ndn.bv_val );
  			return( 1 );
  		}
  		} break;
  
  	default:
  		/* silence warnings */
  		break;
  	}
  
  	ms = ch_calloc( sizeof( metasubtree_t ), 1 );
  	ms->ms_type = type;
  
  	switch ( ms->ms_type ) {
  	case META_ST_SUBTREE:
  	case META_ST_SUBORDINATE:
  		ms->ms_dn = ndn;
  		break;
  
  	case META_ST_REGEX: {
  		int rc;
  
  		rc = regcomp( &ms->ms_regex, pattern, REG_EXTENDED|REG_ICASE );
  		if ( rc != 0 ) {
  			char regerr[ SLAP_TEXT_BUFLEN ];
  
  			regerror( rc, &ms->ms_regex, regerr, sizeof(regerr) );
  
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"regular expression \"%s\" bad because of %s",
  				pattern, regerr );
  			ch_free( ms );
  			return 1;
  		}
  		ber_str2bv( pattern, 0, 1, &ms->ms_regex_pattern );
  		} break;
  	}
  
  	if ( mt->mt_subtree == NULL ) {
  		 mt->mt_subtree = ms;
  
  	} else {
  		metasubtree_t **msp;
  
  		for ( msp = &mt->mt_subtree; *msp; ) {
  			switch ( ms->ms_type ) {
  			case META_ST_SUBTREE:
  				switch ( (*msp)->ms_type ) {
  				case META_ST_SUBTREE:
  					if ( dnIsSuffix( &(*msp)->ms_dn, &ms->ms_dn ) ) {
  						metasubtree_t *tmp = *msp;
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.subtree:%s\" is contained in rule \"dn.subtree:%s\" (replaced)\n",
  							c->log, pattern, (*msp)->ms_dn.bv_val );
  						*msp = (*msp)->ms_next;
  						tmp->ms_next = NULL;
  						meta_subtree_destroy( tmp );
  						continue;
  
  					} else if ( dnIsSuffix( &ms->ms_dn, &(*msp)->ms_dn ) ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.subtree:%s\" contains rule \"dn.subtree:%s\" (ignored)\n",
  							c->log, (*msp)->ms_dn.bv_val, pattern );
  						meta_subtree_destroy( ms );
  						ms = NULL;
  						return( 0 );
  					}
  					break;
  
  				case META_ST_SUBORDINATE:
  					if ( dnIsSuffix( &(*msp)->ms_dn, &ms->ms_dn ) ) {
  						metasubtree_t *tmp = *msp;
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" is contained in rule \"dn.subtree:%s\" (replaced)\n",
  							c->log, pattern, (*msp)->ms_dn.bv_val );
  						*msp = (*msp)->ms_next;
  						tmp->ms_next = NULL;
  						meta_subtree_destroy( tmp );
  						continue;
  
  					} else if ( dnIsSuffix( &ms->ms_dn, &(*msp)->ms_dn ) && ms->ms_dn.bv_len > (*msp)->ms_dn.bv_len ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" contains rule \"dn.subtree:%s\" (ignored)\n",
  							c->log, (*msp)->ms_dn.bv_val, pattern );
  						meta_subtree_destroy( ms );
  						ms = NULL;
  						return( 0 );
  					}
  					break;
  
  				case META_ST_REGEX:
  					if ( regexec( &(*msp)->ms_regex, ms->ms_dn.bv_val, 0, NULL, 0 ) == 0 ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.regex:%s\" may contain rule \"dn.subtree:%s\"\n",
  							c->log, (*msp)->ms_regex_pattern.bv_val, ms->ms_dn.bv_val );
  					}
  					break;
  				}
  				break;
  
  			case META_ST_SUBORDINATE:
  				switch ( (*msp)->ms_type ) {
  				case META_ST_SUBTREE:
  					if ( dnIsSuffix( &(*msp)->ms_dn, &ms->ms_dn ) ) {
  						metasubtree_t *tmp = *msp;
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" is contained in rule \"dn.subtree:%s\" (replaced)\n",
  							c->log, pattern, (*msp)->ms_dn.bv_val );
  						*msp = (*msp)->ms_next;
  						tmp->ms_next = NULL;
  						meta_subtree_destroy( tmp );
  						continue;
  
  					} else if ( dnIsSuffix( &ms->ms_dn, &(*msp)->ms_dn ) && ms->ms_dn.bv_len > (*msp)->ms_dn.bv_len ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" contains rule \"dn.subtree:%s\" (ignored)\n",
  							c->log, (*msp)->ms_dn.bv_val, pattern );
  						meta_subtree_destroy( ms );
  						ms = NULL;
  						return( 0 );
  					}
  					break;
  
  				case META_ST_SUBORDINATE:
  					if ( dnIsSuffix( &(*msp)->ms_dn, &ms->ms_dn ) ) {
  						metasubtree_t *tmp = *msp;
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" is contained in rule \"dn.children:%s\" (replaced)\n",
  							c->log, pattern, (*msp)->ms_dn.bv_val );
  						*msp = (*msp)->ms_next;
  						tmp->ms_next = NULL;
  						meta_subtree_destroy( tmp );
  						continue;
  
  					} else if ( dnIsSuffix( &ms->ms_dn, &(*msp)->ms_dn ) ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.children:%s\" contains rule \"dn.children:%s\" (ignored)\n",
  							c->log, (*msp)->ms_dn.bv_val, pattern );
  						meta_subtree_destroy( ms );
  						ms = NULL;
  						return( 0 );
  					}
  					break;
  
  				case META_ST_REGEX:
  					if ( regexec( &(*msp)->ms_regex, ms->ms_dn.bv_val, 0, NULL, 0 ) == 0 ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.regex:%s\" may contain rule \"dn.subtree:%s\"\n",
  							c->log, (*msp)->ms_regex_pattern.bv_val, ms->ms_dn.bv_val );
  					}
  					break;
  				}
  				break;
  
  			case META_ST_REGEX:
  				switch ( (*msp)->ms_type ) {
  				case META_ST_SUBTREE:
  				case META_ST_SUBORDINATE:
  					if ( regexec( &ms->ms_regex, (*msp)->ms_dn.bv_val, 0, NULL, 0 ) == 0 ) {
  						Debug( LDAP_DEBUG_CONFIG,
  							"%s: previous rule \"dn.subtree:%s\" may be contained in rule \"dn.regex:%s\"\n",
  							c->log, (*msp)->ms_dn.bv_val, ms->ms_regex_pattern.bv_val );
  					}
  					break;
  
  				case META_ST_REGEX:
  					/* no check possible */
  					break;
  				}
  				break;
  			}
  
  			msp = &(*msp)->ms_next;
  		}
  
  		*msp = ms;
  	}
  
  	return 0;
  }
  
  static slap_verbmasks idassert_mode[] = {
  	{ BER_BVC("self"),		LDAP_BACK_IDASSERT_SELF },
  	{ BER_BVC("anonymous"),		LDAP_BACK_IDASSERT_ANONYMOUS },
  	{ BER_BVC("none"),		LDAP_BACK_IDASSERT_NOASSERT },
  	{ BER_BVC("legacy"),		LDAP_BACK_IDASSERT_LEGACY },
  	{ BER_BVNULL,			0 }
  };
  
  static slap_verbmasks tls_mode[] = {
  	{ BER_BVC( "propagate" ),	LDAP_BACK_F_TLS_PROPAGATE_MASK },
  	{ BER_BVC( "try-propagate" ),	LDAP_BACK_F_PROPAGATE_TLS },
  	{ BER_BVC( "start" ),		LDAP_BACK_F_TLS_USE_MASK },
  	{ BER_BVC( "try-start" ),	LDAP_BACK_F_USE_TLS },
  	{ BER_BVC( "ldaps" ),		LDAP_BACK_F_TLS_LDAPS },
  	{ BER_BVC( "none" ),		LDAP_BACK_F_NONE },
  	{ BER_BVNULL,			0 }
  };
  
  static slap_verbmasks t_f_mode[] = {
  	{ BER_BVC( "yes" ),		LDAP_BACK_F_T_F },
  	{ BER_BVC( "discover" ),	LDAP_BACK_F_T_F_DISCOVER },
  	{ BER_BVC( "no" ),		LDAP_BACK_F_NONE },
  	{ BER_BVNULL,			0 }
  };
  
  static slap_verbmasks cancel_mode[] = {
  	{ BER_BVC( "ignore" ),		LDAP_BACK_F_CANCEL_IGNORE },
  	{ BER_BVC( "exop" ),		LDAP_BACK_F_CANCEL_EXOP },
  	{ BER_BVC( "exop-discover" ),	LDAP_BACK_F_CANCEL_EXOP_DISCOVER },
  	{ BER_BVC( "abandon" ),		LDAP_BACK_F_CANCEL_ABANDON },
  	{ BER_BVNULL,			0 }
  };
  
  static slap_verbmasks onerr_mode[] = {
  	{ BER_BVC( "stop" ),		META_BACK_F_ONERR_STOP },
  	{ BER_BVC( "report" ),	META_BACK_F_ONERR_REPORT },
  	{ BER_BVC( "continue" ),		LDAP_BACK_F_NONE },
  	{ BER_BVNULL,			0 }
  };
  
  /* see enum in slap.h */
  static slap_cf_aux_table timeout_table[] = {
  	{ BER_BVC("bind="),	SLAP_OP_BIND * sizeof( time_t ),	'u', 0, NULL },
  	/* unbind makes no sense */
  	{ BER_BVC("add="),	SLAP_OP_ADD * sizeof( time_t ),		'u', 0, NULL },
  	{ BER_BVC("delete="),	SLAP_OP_DELETE * sizeof( time_t ),	'u', 0, NULL },
  	{ BER_BVC("modrdn="),	SLAP_OP_MODRDN * sizeof( time_t ),	'u', 0, NULL },
  	{ BER_BVC("modify="),	SLAP_OP_MODIFY * sizeof( time_t ),	'u', 0, NULL },
  	{ BER_BVC("compare="),	SLAP_OP_COMPARE * sizeof( time_t ),	'u', 0, NULL },
  	{ BER_BVC("search="),	SLAP_OP_SEARCH * sizeof( time_t ),	'u', 0, NULL },
  	/* abandon makes little sense */
  #if 0	/* not implemented yet */
  	{ BER_BVC("extended="),	SLAP_OP_EXTENDED * sizeof( time_t ),	'u', 0, NULL },
  #endif
  	{ BER_BVNULL, 0, 0, 0, NULL }
  };
  
  static int
  meta_back_cf_gen( ConfigArgs *c )
  {
  	metainfo_t	*mi = ( metainfo_t * )c->be->be_private;
  	metatarget_t	*mt;
  	metacommon_t	*mc;
  
  	int i, rc = 0;
  
  	assert( mi != NULL );
  
  	if ( c->op == SLAP_CONFIG_EMIT || c->op == LDAP_MOD_DELETE ) {
  		if ( !mi )
  			return 1;
  
  		if ( c->table == Cft_Database ) {
  			mt = NULL;
  			mc = &mi->mi_mc;
  		} else {
  			mt = c->ca_private;
  			mc = &mt->mt_mc;
  		}
  	}
  
  	if ( c->op == SLAP_CONFIG_EMIT ) {
  		struct berval bv = BER_BVNULL;
  
  		switch( c->type ) {
  		/* Base attrs */
  		case LDAP_BACK_CFG_CONN_TTL:
  			if ( mi->mi_conn_ttl == 0 ) {
  				return 1;
  			} else {
  				char	buf[ SLAP_TEXT_BUFLEN ];
  
  				lutil_unparse_time( buf, sizeof( buf ), mi->mi_conn_ttl );
  				ber_str2bv( buf, 0, 0, &bv );
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			break;
  
  		case LDAP_BACK_CFG_DNCACHE_TTL:
  			if ( mi->mi_cache.ttl == META_DNCACHE_DISABLED ) {
  				return 1;
  			} else if ( mi->mi_cache.ttl == META_DNCACHE_FOREVER ) {
  				BER_BVSTR( &bv, "forever" );
  			} else {
  				char	buf[ SLAP_TEXT_BUFLEN ];
  
  				lutil_unparse_time( buf, sizeof( buf ), mi->mi_cache.ttl );
  				ber_str2bv( buf, 0, 0, &bv );
  			}
  			value_add_one( &c->rvalue_vals, &bv );
  			break;
  
  		case LDAP_BACK_CFG_IDLE_TIMEOUT:
  			if ( mi->mi_idle_timeout == 0 ) {
  				return 1;
  			} else {
  				char	buf[ SLAP_TEXT_BUFLEN ];
  
  				lutil_unparse_time( buf, sizeof( buf ), mi->mi_idle_timeout );
  				ber_str2bv( buf, 0, 0, &bv );
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			break;
  
  		case LDAP_BACK_CFG_ONERR:
  			enum_to_verb( onerr_mode, mi->mi_flags & META_BACK_F_ONERR_MASK, &bv );
  			if ( BER_BVISNULL( &bv )) {
  				rc = 1;
  			} else {
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			break;
  
  		case LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER:
  			c->value_int = META_BACK_DEFER_ROOTDN_BIND( mi );
  			break;
  
  		case LDAP_BACK_CFG_SINGLECONN:
  			c->value_int = LDAP_BACK_SINGLECONN( mi );
  			break;
  
  		case LDAP_BACK_CFG_USETEMP:
  			c->value_int = LDAP_BACK_USE_TEMPORARIES( mi );
  			break;
  
  		case LDAP_BACK_CFG_CONNPOOLMAX:
  			c->value_int = mi->mi_conn_priv_max;
  			break;
  
  		/* common attrs */
  		case LDAP_BACK_CFG_BIND_TIMEOUT:
  			if ( mc->mc_bind_timeout.tv_sec == 0 &&
  				mc->mc_bind_timeout.tv_usec == 0 ) {
  				return 1;
  			} else {
  				c->value_ulong = mc->mc_bind_timeout.tv_sec * 1000000UL +
  					mc->mc_bind_timeout.tv_usec;
  			}
  			break;
  
  		case LDAP_BACK_CFG_CANCEL: {
  			slap_mask_t	mask = LDAP_BACK_F_CANCEL_MASK2;
  
  			if ( mt && META_BACK_TGT_CANCEL_DISCOVER( mt ) ) {
  				mask &= ~LDAP_BACK_F_CANCEL_EXOP;
  			}
  			enum_to_verb( cancel_mode, (mc->mc_flags & mask), &bv );
  			if ( BER_BVISNULL( &bv ) ) {
  				/* there's something wrong... */
  				assert( 0 );
  				rc = 1;
  
  			} else {
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			} break;
  
  		case LDAP_BACK_CFG_CHASE:
  			c->value_int = META_BACK_CMN_CHASE_REFERRALS(mc);
  			break;
  
  #ifdef SLAPD_META_CLIENT_PR
  		case LDAP_BACK_CFG_CLIENT_PR:
  			if ( mc->mc_ps == META_CLIENT_PR_DISABLE ) {
  				return 1;
  			} else if ( mc->mc_ps == META_CLIENT_PR_ACCEPT_UNSOLICITED ) {
  				BER_BVSTR( &bv, "accept-unsolicited" );
  			} else {
  				bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg), "%d", mc->mc_ps );
  				bv.bv_val = c->cr_msg;
  			}
  			value_add_one( &c->rvalue_vals, &bv );
  			break;
  #endif /* SLAPD_META_CLIENT_PR */
  
  		case LDAP_BACK_CFG_DEFAULT_T:
  			if ( mt || mi->mi_defaulttarget == META_DEFAULT_TARGET_NONE )
  				return 1;
  			bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg), "%d", mi->mi_defaulttarget );
  			bv.bv_val = c->cr_msg;
  			value_add_one( &c->rvalue_vals, &bv );
  			break;
  
  		case LDAP_BACK_CFG_NETWORK_TIMEOUT:
  			if ( mc->mc_network_timeout == 0 ) {
  				return 1;
  			}
  			bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg), "%ld",
  				mc->mc_network_timeout );
  			bv.bv_val = c->cr_msg;
  			value_add_one( &c->rvalue_vals, &bv );
  			break;
  
  		case LDAP_BACK_CFG_NOREFS:
  			c->value_int = META_BACK_CMN_NOREFS(mc);
  			break;
  
  		case LDAP_BACK_CFG_NOUNDEFFILTER:
  			c->value_int = META_BACK_CMN_NOUNDEFFILTER(mc);
  			break;
  
  		case LDAP_BACK_CFG_NRETRIES:
  			if ( mc->mc_nretries == META_RETRY_FOREVER ) {
  				BER_BVSTR( &bv, "forever" );
  			} else if ( mc->mc_nretries == META_RETRY_NEVER ) {
  				BER_BVSTR( &bv, "never" );
  			} else {
  				bv.bv_len = snprintf( c->cr_msg, sizeof(c->cr_msg), "%d",
  					mc->mc_nretries );
  				bv.bv_val = c->cr_msg;
  			}
  			value_add_one( &c->rvalue_vals, &bv );
  			break;
  
  		case LDAP_BACK_CFG_QUARANTINE:
  			if ( !META_BACK_CMN_QUARANTINE( mc )) {
  				rc = 1;
  				break;
  			}
  			rc = mi->mi_ldap_extra->retry_info_unparse( &mc->mc_quarantine, &bv );
  			if ( rc == 0 ) {
  				ber_bvarray_add( &c->rvalue_vals, &bv );
  			}
  			break;
  
  		case LDAP_BACK_CFG_REBIND:
  			c->value_int = META_BACK_CMN_SAVECRED(mc);
  			break;
  
  		case LDAP_BACK_CFG_TIMEOUT:
  			for ( i = 0; i < SLAP_OP_LAST; i++ ) {
  				if ( mc->mc_timeout[ i ] != 0 ) {
  					break;
  				}
  			}
  
  			if ( i == SLAP_OP_LAST ) {
  				return 1;
  			}
  
  			BER_BVZERO( &bv );
  			slap_cf_aux_table_unparse( mc->mc_timeout, &bv, timeout_table );
  
  			if ( BER_BVISNULL( &bv ) ) {
  				return 1;
  			}
  
  			for ( i = 0; isspace( (unsigned char) bv.bv_val[ i ] ); i++ )
  				/* count spaces */ ;
  
  			if ( i ) {
  				bv.bv_len -= i;
  				AC_MEMCPY( bv.bv_val, &bv.bv_val[ i ],
  					bv.bv_len + 1 );
  			}
  
  			ber_bvarray_add( &c->rvalue_vals, &bv );
  			break;
  
  		case LDAP_BACK_CFG_VERSION:
  			if ( mc->mc_version == 0 )
  				return 1;
  			c->value_int = mc->mc_version;
  			break;
  
  #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  		case LDAP_BACK_CFG_ST_REQUEST:
  			c->value_int = META_BACK_CMN_ST_REQUEST( mc );
  			break;
  #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
  
  		case LDAP_BACK_CFG_T_F:
  			enum_to_verb( t_f_mode, (mc->mc_flags & LDAP_BACK_F_T_F_MASK2), &bv );
  			if ( BER_BVISNULL( &bv ) ) {
  				/* there's something wrong... */
  				assert( 0 );
  				rc = 1;
  
  			} else {
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			break;
  
  		case LDAP_BACK_CFG_TLS: {
  			struct berval bc = BER_BVNULL, bv2;
  
  			if (( mc->mc_flags & LDAP_BACK_F_TLS_MASK ) == LDAP_BACK_F_NONE ) {
  				rc = 1;
  				break;
  			}
  			enum_to_verb( tls_mode, ( mc->mc_flags & LDAP_BACK_F_TLS_MASK ), &bv );
  			assert( !BER_BVISNULL( &bv ) );
  
  			if ( mt ) {
  				bindconf_tls_unparse( &mt->mt_tls, &bc );
  			}
  
  			if ( !BER_BVISEMPTY( &bc )) {
  				bv2.bv_len = bv.bv_len + bc.bv_len + 1;
  				bv2.bv_val = ch_malloc( bv2.bv_len + 1 );
  				strcpy( bv2.bv_val, bv.bv_val );
  				bv2.bv_val[bv.bv_len] = ' ';
  				strcpy( &bv2.bv_val[bv.bv_len + 1], bc.bv_val );
  				ber_memfree( bc.bv_val );
  				ber_bvarray_add( &c->rvalue_vals, &bv2 );
  			} else {
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			} break;
  
  		/* target attrs */
  		case LDAP_BACK_CFG_URI: {
  			char *p2, *p1 = strchr( mt->mt_uri, ' ' );
  			bv.bv_len = strlen( mt->mt_uri ) + 3 + mt->mt_psuffix.bv_len;
  			bv.bv_val = ch_malloc( bv.bv_len + 1 );
  			p2 = bv.bv_val;
  			*p2++ = '"';
  			if ( p1 ) {
  				p2 = lutil_strncopy( p2, mt->mt_uri, p1 - mt->mt_uri );
  			} else {
  				p2 = lutil_strcopy( p2, mt->mt_uri );
  			}
  			*p2++ = '/';
  			p2 = lutil_strcopy( p2, mt->mt_psuffix.bv_val );
  			*p2++ = '"';
  			if ( p1 ) {
  				strcpy( p2, p1 );
  			}
  			ber_bvarray_add( &c->rvalue_vals, &bv );
  			} break;
  
  		case LDAP_BACK_CFG_ACL_AUTHCDN:
  		case LDAP_BACK_CFG_ACL_PASSWD:
  			/* FIXME no point here, there is no code implementing
  			 * their features. Was this supposed to implement
  			 * acl-bind like back-ldap?
  			 */
  			rc = 1;
  			break;
  
  		case LDAP_BACK_CFG_IDASSERT_AUTHZFROM: {
  			BerVarray	*bvp;
  			int		i;
  			struct berval	bv = BER_BVNULL;
  			char		buf[SLAP_TEXT_BUFLEN];
  
  			bvp = &mt->mt_idassert_authz;
  			if ( *bvp == NULL ) {
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL )
  				{
  					BER_BVSTR( &bv, "*" );
  					value_add_one( &c->rvalue_vals, &bv );
  
  				} else {
  					rc = 1;
  				}
  				break;
  			}
  
  			for ( i = 0; !BER_BVISNULL( &((*bvp)[ i ]) ); i++ ) {
  				char *ptr;
  				int len = snprintf( buf, sizeof( buf ), SLAP_X_ORDERED_FMT, i );
  				bv.bv_len = ((*bvp)[ i ]).bv_len + len;
  				bv.bv_val = ber_memrealloc( bv.bv_val, bv.bv_len + 1 );
  				ptr = bv.bv_val;
  				ptr = lutil_strcopy( ptr, buf );
  				ptr = lutil_strncopy( ptr, ((*bvp)[ i ]).bv_val, ((*bvp)[ i ]).bv_len );
  				value_add_one( &c->rvalue_vals, &bv );
  			}
  			if ( bv.bv_val ) {
  				ber_memfree( bv.bv_val );
  			}
  			break;
  		}
  
  		case LDAP_BACK_CFG_IDASSERT_BIND: {
  			int		i;
  			struct berval	bc = BER_BVNULL;
  			char		*ptr;
  
  			if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE ) {
  				return 1;
  			} else {
  				ber_len_t	len;
  
  				switch ( mt->mt_idassert_mode ) {
  				case LDAP_BACK_IDASSERT_OTHERID:
  				case LDAP_BACK_IDASSERT_OTHERDN:
  					break;
  
  				default: {
  					struct berval	mode = BER_BVNULL;
  
  					enum_to_verb( idassert_mode, mt->mt_idassert_mode, &mode );
  					if ( BER_BVISNULL( &mode ) ) {
  						/* there's something wrong... */
  						assert( 0 );
  						rc = 1;
  
  					} else {
  						bv.bv_len = STRLENOF( "mode=" ) + mode.bv_len;
  						bv.bv_val = ch_malloc( bv.bv_len + 1 );
  
  						ptr = lutil_strcopy( bv.bv_val, "mode=" );
  						ptr = lutil_strcopy( ptr, mode.bv_val );
  					}
  					break;
  				}
  				}
  
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) {
  					len = bv.bv_len + STRLENOF( "authz=native" );
  
  					if ( !BER_BVISEMPTY( &bv ) ) {
  						len += STRLENOF( " " );
  					}
  
  					bv.bv_val = ch_realloc( bv.bv_val, len + 1 );
  
  					ptr = &bv.bv_val[ bv.bv_len ];
  
  					if ( !BER_BVISEMPTY( &bv ) ) {
  						ptr = lutil_strcopy( ptr, " " );
  					}
  
  					(void)lutil_strcopy( ptr, "authz=native" );
  				}
  
  				len = bv.bv_len + STRLENOF( "flags=non-prescriptive,override,obsolete-encoding-workaround,proxy-authz-non-critical,dn-authzid" );
  				/* flags */
  				if ( !BER_BVISEMPTY( &bv ) ) {
  					len += STRLENOF( " " );
  				}
  
  				bv.bv_val = ch_realloc( bv.bv_val, len + 1 );
  
  				ptr = &bv.bv_val[ bv.bv_len ];
  
  				if ( !BER_BVISEMPTY( &bv ) ) {
  					ptr = lutil_strcopy( ptr, " " );
  				}
  
  				ptr = lutil_strcopy( ptr, "flags=" );
  
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
  					ptr = lutil_strcopy( ptr, "prescriptive" );
  				} else {
  					ptr = lutil_strcopy( ptr, "non-prescriptive" );
  				}
  
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
  					ptr = lutil_strcopy( ptr, ",override" );
  				}
  
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
  					ptr = lutil_strcopy( ptr, ",obsolete-proxy-authz" );
  
  				} else if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
  					ptr = lutil_strcopy( ptr, ",obsolete-encoding-workaround" );
  				}
  
  				if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PROXYAUTHZ_CRITICAL ) {
  					ptr = lutil_strcopy( ptr, ",proxy-authz-critical" );
  
  				} else {
  					ptr = lutil_strcopy( ptr, ",proxy-authz-non-critical" );
  				}
  
  #ifdef SLAP_AUTH_DN
  				switch ( mt->mt_idassert_flags & LDAP_BACK_AUTH_DN_MASK ) {
  				case LDAP_BACK_AUTH_DN_AUTHZID:
  					ptr = lutil_strcopy( ptr, ",dn-authzid" );
  					break;
  
  				case LDAP_BACK_AUTH_DN_WHOAMI:
  					ptr = lutil_strcopy( ptr, ",dn-whoami" );
  					break;
  
  				default:
  #if 0 /* implicit */
  					ptr = lutil_strcopy( ptr, ",dn-none" );
  #endif
  					break;
  				}
  #endif
  
  				bv.bv_len = ( ptr - bv.bv_val );
  				/* end-of-flags */
  			}
  
  			bindconf_unparse( &mt->mt_idassert.si_bc, &bc );
  
  			if ( !BER_BVISNULL( &bv ) ) {
  				ber_len_t	len = bv.bv_len + bc.bv_len;
  
  				bv.bv_val = ch_realloc( bv.bv_val, len + 1 );
  
  				assert( bc.bv_val[ 0 ] == ' ' );
  
  				ptr = lutil_strcopy( &bv.bv_val[ bv.bv_len ], bc.bv_val );
  				free( bc.bv_val );
  				bv.bv_len = ptr - bv.bv_val;
  
  			} else {
  				for ( i = 0; isspace( (unsigned char) bc.bv_val[ i ] ); i++ )
  					/* count spaces */ ;
  
  				if ( i ) {
  					bc.bv_len -= i;
  					AC_MEMCPY( bc.bv_val, &bc.bv_val[ i ], bc.bv_len + 1 );
  				}
  
  				bv = bc;
  			}
  
  			ber_bvarray_add( &c->rvalue_vals, &bv );
  
  			break;
  		}
  
  		case LDAP_BACK_CFG_SUFFIXM:	/* unused */
  		case LDAP_BACK_CFG_REWRITE:
  			if ( mt->mt_rwmap.rwm_bva_rewrite == NULL ) {
  				rc = 1;
  			} else {
  				rc = slap_bv_x_ordered_unparse( mt->mt_rwmap.rwm_bva_rewrite, &c->rvalue_vals );
  			}
  			break;
  
  		case LDAP_BACK_CFG_MAP:
  			if ( mt->mt_rwmap.rwm_bva_map == NULL ) {
  				rc = 1;
  			} else {
  				rc = slap_bv_x_ordered_unparse( mt->mt_rwmap.rwm_bva_map, &c->rvalue_vals );
  			}
  			break;
  
  		case LDAP_BACK_CFG_SUBTREE_EX:
  		case LDAP_BACK_CFG_SUBTREE_IN:
  			rc = meta_subtree_unparse( c, mt );
  			break;
  
  		/* replaced by idassert */
  		case LDAP_BACK_CFG_PSEUDOROOTDN:
  		case LDAP_BACK_CFG_PSEUDOROOTPW:
  			rc = 1;
  			break;
  
  		case LDAP_BACK_CFG_KEEPALIVE: {
  				struct berval bv;
  				char buf[AC_LINE_MAX];
  				bv.bv_len = AC_LINE_MAX;
  				bv.bv_val = &buf[0];
  				slap_keepalive_parse(&bv, &mt->mt_tls.sb_keepalive, 0, 0, 1);
  				value_add_one( &c->rvalue_vals, &bv );
  				break;
  			}
  
  		default:
  			rc = 1;
  		}
  		return rc;
  	} else if ( c->op == LDAP_MOD_DELETE ) {
  		switch( c->type ) {
  		/* Base attrs */
  		case LDAP_BACK_CFG_CONN_TTL:
  			mi->mi_conn_ttl = 0;
  			break;
  
  		case LDAP_BACK_CFG_DNCACHE_TTL:
  			mi->mi_cache.ttl = META_DNCACHE_DISABLED;
  			break;
  
  		case LDAP_BACK_CFG_IDLE_TIMEOUT:
  			mi->mi_idle_timeout = 0;
  			break;
  
  		case LDAP_BACK_CFG_ONERR:
  			mi->mi_flags &= ~META_BACK_F_ONERR_MASK;
  			break;
  
  		case LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER:
  			mi->mi_flags &= ~META_BACK_F_DEFER_ROOTDN_BIND;
  			break;
  
  		case LDAP_BACK_CFG_SINGLECONN:
  			mi->mi_flags &= ~LDAP_BACK_F_SINGLECONN;
  			break;
  
  		case LDAP_BACK_CFG_USETEMP:
  			mi->mi_flags &= ~LDAP_BACK_F_USE_TEMPORARIES;
  			break;
  
  		case LDAP_BACK_CFG_CONNPOOLMAX:
  			mi->mi_conn_priv_max = LDAP_BACK_CONN_PRIV_MIN;
  			break;
  
  		/* common attrs */
  		case LDAP_BACK_CFG_BIND_TIMEOUT:
  			mc->mc_bind_timeout.tv_sec = 0;
  			mc->mc_bind_timeout.tv_usec = 0;
  			break;
  
  		case LDAP_BACK_CFG_CANCEL:
  			mc->mc_flags &= ~LDAP_BACK_F_CANCEL_MASK2;
  			break;
  
  		case LDAP_BACK_CFG_CHASE:
  			mc->mc_flags &= ~LDAP_BACK_F_CHASE_REFERRALS;
  			break;
  
  #ifdef SLAPD_META_CLIENT_PR
  		case LDAP_BACK_CFG_CLIENT_PR:
  			mc->mc_ps == META_CLIENT_PR_DISABLE;
  			break;
  #endif /* SLAPD_META_CLIENT_PR */
  
  		case LDAP_BACK_CFG_DEFAULT_T:
  			mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE;
  			break;
  
  		case LDAP_BACK_CFG_NETWORK_TIMEOUT:
  			mc->mc_network_timeout = 0;
  			break;
  
  		case LDAP_BACK_CFG_NOREFS:
  			mc->mc_flags &= ~LDAP_BACK_F_NOREFS;
  			break;
  
  		case LDAP_BACK_CFG_NOUNDEFFILTER:
  			mc->mc_flags &= ~LDAP_BACK_F_NOUNDEFFILTER;
  			break;
  
  		case LDAP_BACK_CFG_NRETRIES:
  			mc->mc_nretries == META_RETRY_DEFAULT;
  			break;
  
  		case LDAP_BACK_CFG_QUARANTINE:
  			if ( META_BACK_CMN_QUARANTINE( mc )) {
  				mi->mi_ldap_extra->retry_info_destroy( &mc->mc_quarantine );
  				mc->mc_flags &= ~LDAP_BACK_F_QUARANTINE;
  				if ( mc == &mt->mt_mc ) {
  					ldap_pvt_thread_mutex_destroy( &mt->mt_quarantine_mutex );
  					mt->mt_isquarantined = 0;
  				}
  			}
  			break;
  
  		case LDAP_BACK_CFG_REBIND:
  			mc->mc_flags &= ~LDAP_BACK_F_SAVECRED;
  			break;
  
  		case LDAP_BACK_CFG_TIMEOUT:
  			for ( i = 0; i < SLAP_OP_LAST; i++ ) {
  				mc->mc_timeout[ i ] = 0;
  			}
  			break;
  
  		case LDAP_BACK_CFG_VERSION:
  			mc->mc_version = 0;
  			break;
  
  #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  		case LDAP_BACK_CFG_ST_REQUEST:
  			mc->mc_flags &= ~LDAP_BACK_F_ST_REQUEST;
  			break;
  #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
  
  		case LDAP_BACK_CFG_T_F:
  			mc->mc_flags &= ~LDAP_BACK_F_T_F_MASK2;
  			break;
  
  		case LDAP_BACK_CFG_TLS:
  			mc->mc_flags &= ~LDAP_BACK_F_TLS_MASK;
  			if ( mt )
  				bindconf_free( &mt->mt_tls );
  			break;
  
  		/* target attrs */
  		case LDAP_BACK_CFG_URI:
  			if ( mt->mt_uri ) {
  				ch_free( mt->mt_uri );
  				mt->mt_uri = NULL;
  			}
  			/* FIXME: should have a way to close all cached
  			 * connections associated with this target.
  			 */
  			break;
  
  		case LDAP_BACK_CFG_IDASSERT_AUTHZFROM: {
  			BerVarray *bvp;
  
  			bvp = &mt->mt_idassert_authz; break;
  			if ( c->valx < 0 ) {
  				if ( *bvp != NULL ) {
  					ber_bvarray_free( *bvp );
  					*bvp = NULL;
  				}
  
  			} else {
  				if ( *bvp == NULL ) {
  					rc = 1;
  					break;
  				}
  
  				for ( i = 0; !BER_BVISNULL( &((*bvp)[ i ]) ); i++ )
  					;
  
  				if ( i >= c->valx ) {
  					rc = 1;
  					break;
  				}
  				ber_memfree( ((*bvp)[ c->valx ]).bv_val );
  				for ( i = c->valx; !BER_BVISNULL( &((*bvp)[ i + 1 ]) ); i++ ) {
  					(*bvp)[ i ] = (*bvp)[ i + 1 ];
  				}
  				BER_BVZERO( &((*bvp)[ i ]) );
  			}
  			} break;
  
  		case LDAP_BACK_CFG_IDASSERT_BIND:
  			bindconf_free( &mt->mt_idassert.si_bc );
  			memset( &mt->mt_idassert, 0, sizeof( slap_idassert_t ) );
  			break;
  
  		case LDAP_BACK_CFG_SUFFIXM:	/* unused */
  		case LDAP_BACK_CFG_REWRITE:
  			if ( mt->mt_rwmap.rwm_bva_rewrite ) {
  				ber_bvarray_free( mt->mt_rwmap.rwm_bva_rewrite );
  				mt->mt_rwmap.rwm_bva_rewrite = NULL;
  			}
  			if ( mt->mt_rwmap.rwm_rw )
  				rewrite_info_delete( &mt->mt_rwmap.rwm_rw );
  			break;
  
  		case LDAP_BACK_CFG_MAP:
  			if ( mt->mt_rwmap.rwm_bva_map ) {
  				ber_bvarray_free( mt->mt_rwmap.rwm_bva_map );
  				mt->mt_rwmap.rwm_bva_map = NULL;
  			}
  			meta_back_map_free( &mt->mt_rwmap.rwm_oc );
  			meta_back_map_free( &mt->mt_rwmap.rwm_at );
  			mt->mt_rwmap.rwm_oc.drop_missing = 0;
  			mt->mt_rwmap.rwm_at.drop_missing = 0;
  			break;
  
  		case LDAP_BACK_CFG_SUBTREE_EX:
  		case LDAP_BACK_CFG_SUBTREE_IN:
  			/* can only be one of exclude or include */
  			if (( c->type == LDAP_BACK_CFG_SUBTREE_EX ) ^ mt->mt_subtree_exclude ) {
  				rc = 1;
  				break;
  			}
  			if ( c->valx < 0 ) {
  				meta_subtree_destroy( mt->mt_subtree );
  				mt->mt_subtree = NULL;
  			} else {
  				metasubtree_t *ms, **mprev;
  				for (i=0, mprev = &mt->mt_subtree, ms = *mprev; ms; ms = *mprev) {
  					if ( i == c->valx ) {
  						*mprev = ms->ms_next;
  						meta_subtree_free( ms );
  						break;
  					}
  					i++;
  					mprev = &ms->ms_next;
  				}
  				if ( i != c->valx )
  					rc = 1;
  			}
  			break;
  
  		case LDAP_BACK_CFG_KEEPALIVE:
  			mt->mt_tls.sb_keepalive.sk_idle = 0;
  			mt->mt_tls.sb_keepalive.sk_probes = 0;
  			mt->mt_tls.sb_keepalive.sk_interval = 0;
  			break;
  
  		default:
  			rc = 1;
  			break;
  		}
  
  		return rc;
  	}
  
  	if ( c->op == SLAP_CONFIG_ADD ) {
  		if ( c->type >= LDAP_BACK_CFG_LAST_BASE ) {
  			/* exclude CFG_URI from this check */
  			if ( c->type > LDAP_BACK_CFG_LAST_BOTH ) {
  				if ( !mi->mi_ntargets ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"need \"uri\" directive first" );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					return 1;
  				}
  			}
  			if ( mi->mi_ntargets ) {
  				mt = mi->mi_targets[ mi->mi_ntargets-1 ];
  				mc = &mt->mt_mc;
  			} else {
  				mt = NULL;
  				mc = &mi->mi_mc;
  			}
  		}
  	} else {
  		if ( c->table == Cft_Database ) {
  			mt = NULL;
  			mc = &mi->mi_mc;
  		} else {
  			mt = c->ca_private;
  			if ( mt )
  				mc = &mt->mt_mc;
  			else
  				mc = NULL;
  		}
  	}
  
  	switch( c->type ) {
  	case LDAP_BACK_CFG_URI: {
  		LDAPURLDesc 	*ludp;
  		struct berval	dn;
  		int		j;
  
  		char		**uris = NULL;
  
  		if ( c->be->be_nsuffix == NULL ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"the suffix must be defined before any target" );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  
  		i = mi->mi_ntargets++;
  
  		mi->mi_targets = ( metatarget_t ** )ch_realloc( mi->mi_targets,
  			sizeof( metatarget_t * ) * mi->mi_ntargets );
  		if ( mi->mi_targets == NULL ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"out of memory while storing server name"
  				" in \"%s <protocol>://<server>[:port]/<naming context>\"",
  				c->argv[0] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  
  		if ( meta_back_new_target( &mi->mi_targets[ i ] ) != 0 ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unable to init server"
  				" in \"%s <protocol>://<server>[:port]/<naming context>\"",
  				c->argv[0] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  
  		mt = mi->mi_targets[ i ];
  
  		mt->mt_rebind_f = mi->mi_rebind_f;
  		mt->mt_urllist_f = mi->mi_urllist_f;
  		mt->mt_urllist_p = mt;
  
  		if ( META_BACK_QUARANTINE( mi ) ) {
  			ldap_pvt_thread_mutex_init( &mt->mt_quarantine_mutex );
  		}
  		mt->mt_mc = mi->mi_mc;
  
  		for ( j = 1; j < c->argc; j++ ) {
  			char	**tmpuris = ldap_str2charray( c->argv[ j ], "\t" );
  
  			if ( tmpuris == NULL ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"unable to parse URIs #%d"
  					" in \"%s <protocol>://<server>[:port]/<naming context>\"",
  					j-1, c->argv[0] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  
  			if ( j == 1 ) {
  				uris = tmpuris;
  
  			} else {
  				ldap_charray_merge( &uris, tmpuris );
  				ldap_charray_free( tmpuris );
  			}
  		}
  
  		for ( j = 0; uris[ j ] != NULL; j++ ) {
  			char *tmpuri = NULL;
  
  			/*
  			 * uri MUST be legal!
  			 */
  			if ( ldap_url_parselist_ext( &ludp, uris[ j ], "\t",
  					LDAP_PVT_URL_PARSE_NONE ) != LDAP_SUCCESS
  				|| ludp->lud_next != NULL )
  			{
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"unable to parse URI #%d"
  					" in \"%s <protocol>://<server>[:port]/<naming context>\"",
  					j-1, c->argv[0] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				ldap_charray_free( uris );
  				return 1;
  			}
  
  			if ( j == 0 ) {
  
  				/*
  				 * uri MUST have the <dn> part!
  				 */
  				if ( ludp->lud_dn == NULL ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"missing <naming context> "
  						" in \"%s <protocol>://<server>[:port]/<naming context>\"",
  						c->argv[0] );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					ldap_free_urllist( ludp );
  					ldap_charray_free( uris );
  					return 1;
  				}
  
  				/*
  				 * copies and stores uri and suffix
  				 */
  				ber_str2bv( ludp->lud_dn, 0, 0, &dn );
  				rc = dnPrettyNormal( NULL, &dn, &mt->mt_psuffix,
  					&mt->mt_nsuffix, NULL );
  				if ( rc != LDAP_SUCCESS ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"target DN is invalid \"%s\"",
  						c->argv[1] );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					ldap_free_urllist( ludp );
  					ldap_charray_free( uris );
  					return( 1 );
  				}
  
  				ludp->lud_dn[ 0 ] = '\0';
  
  				switch ( ludp->lud_scope ) {
  				case LDAP_SCOPE_DEFAULT:
  					mt->mt_scope = LDAP_SCOPE_SUBTREE;
  					break;
  
  				case LDAP_SCOPE_SUBTREE:
  				case LDAP_SCOPE_SUBORDINATE:
  					mt->mt_scope = ludp->lud_scope;
  					break;
  
  				default:
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"invalid scope for target \"%s\"",
  						c->argv[1] );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					ldap_free_urllist( ludp );
  					ldap_charray_free( uris );
  					return( 1 );
  				}
  
  			} else {
  				/* check all, to apply the scope check on the first one */
  				if ( ludp->lud_dn != NULL && ludp->lud_dn[ 0 ] != '\0' ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"multiple URIs must have no DN part" );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					ldap_free_urllist( ludp );
  					ldap_charray_free( uris );
  					return( 1 );
  
  				}
  			}
  
  			tmpuri = ldap_url_list2urls( ludp );
  			ldap_free_urllist( ludp );
  			if ( tmpuri == NULL ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ), "no memory?" );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				ldap_charray_free( uris );
  				return( 1 );
  			}
  			ldap_memfree( uris[ j ] );
  			uris[ j ] = tmpuri;
  		}
  
  		mt->mt_uri = ldap_charray2str( uris, " " );
  		ldap_charray_free( uris );
  		if ( mt->mt_uri == NULL) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ), "no memory?" );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return( 1 );
  		}
  
  		/*
  		 * uri MUST be a branch of suffix!
  		 */
  		for ( j = 0; !BER_BVISNULL( &c->be->be_nsuffix[ j ] ); j++ ) {
  			if ( dnIsSuffix( &mt->mt_nsuffix, &c->be->be_nsuffix[ j ] ) ) {
  				break;
  			}
  		}
  
  		if ( BER_BVISNULL( &c->be->be_nsuffix[ j ] ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"<naming context> of URI must be within the naming context of this database." );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		c->ca_private = mt;
  	} break;
  	case LDAP_BACK_CFG_SUBTREE_EX:
  	case LDAP_BACK_CFG_SUBTREE_IN:
  	/* subtree-exclude */
  		if ( meta_subtree_config( mt, c )) {
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		break;
  
  	case LDAP_BACK_CFG_DEFAULT_T:
  	/* default target directive */
  		i = mi->mi_ntargets - 1;
  
  		if ( c->argc == 1 ) {
   			if ( i < 0 ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"\"%s\" alone must be inside a \"uri\" directive",
  					c->argv[0] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  			mi->mi_defaulttarget = i;
  
  		} else {
  			if ( strcasecmp( c->argv[ 1 ], "none" ) == 0 ) {
  				if ( i >= 0 ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"\"%s none\" should go before uri definitions",
  						c->argv[0] );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				}
  				mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE;
  
  			} else {
  
  				if ( lutil_atoi( &mi->mi_defaulttarget, c->argv[ 1 ] ) != 0
  					|| mi->mi_defaulttarget < 0
  					|| mi->mi_defaulttarget >= i - 1 )
  				{
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"illegal target number %d",
  						mi->mi_defaulttarget );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					return 1;
  				}
  			}
  		}
  		break;
  
  	case LDAP_BACK_CFG_DNCACHE_TTL:
  	/* ttl of dn cache */
  		if ( strcasecmp( c->argv[ 1 ], "forever" ) == 0 ) {
  			mi->mi_cache.ttl = META_DNCACHE_FOREVER;
  
  		} else if ( strcasecmp( c->argv[ 1 ], "disabled" ) == 0 ) {
  			mi->mi_cache.ttl = META_DNCACHE_DISABLED;
  
  		} else {
  			unsigned long	t;
  
  			if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"unable to parse dncache ttl \"%s\"",
  					c->argv[ 1 ] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  			mi->mi_cache.ttl = (time_t)t;
  		}
  		break;
  
  	case LDAP_BACK_CFG_NETWORK_TIMEOUT: {
  	/* network timeout when connecting to ldap servers */
  		unsigned long t;
  
  		if ( lutil_parse_time( c->argv[ 1 ], &t ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unable to parse network timeout \"%s\"",
  				c->argv[ 1 ] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mc->mc_network_timeout = (time_t)t;
  		} break;
  
  	case LDAP_BACK_CFG_IDLE_TIMEOUT: {
  	/* idle timeout when connecting to ldap servers */
  		unsigned long	t;
  
  		if ( lutil_parse_time( c->argv[ 1 ], &t ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unable to parse idle timeout \"%s\"",
  				c->argv[ 1 ] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  
  		}
  		mi->mi_idle_timeout = (time_t)t;
  		} break;
  
  	case LDAP_BACK_CFG_CONN_TTL: {
  	/* conn ttl */
  		unsigned long	t;
  
  		if ( lutil_parse_time( c->argv[ 1 ], &t ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unable to parse conn ttl \"%s\"",
  				c->argv[ 1 ] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  
  		}
  		mi->mi_conn_ttl = (time_t)t;
  		} break;
  
  	case LDAP_BACK_CFG_BIND_TIMEOUT:
  	/* bind timeout when connecting to ldap servers */
  		mc->mc_bind_timeout.tv_sec = c->value_ulong/1000000;
  		mc->mc_bind_timeout.tv_usec = c->value_ulong%1000000;
  		break;
  
  	case LDAP_BACK_CFG_ACL_AUTHCDN:
  	/* name to use for meta_back_group */
  		if ( strcasecmp( c->argv[ 0 ], "binddn" ) == 0 ) {
  			Debug( LDAP_DEBUG_ANY, "%s: "
  				"\"binddn\" statement is deprecated; "
  				"use \"acl-authcDN\" instead\n",
  				c->log, 0, 0 );
  			/* FIXME: some day we'll need to throw an error */
  		}
  
  		ber_memfree_x( c->value_dn.bv_val, NULL );
  		mt->mt_binddn = c->value_ndn;
  		BER_BVZERO( &c->value_dn );
  		BER_BVZERO( &c->value_ndn );
  		break;
  
  	case LDAP_BACK_CFG_ACL_PASSWD:
  	/* password to use for meta_back_group */
  		if ( strcasecmp( c->argv[ 0 ], "bindpw" ) == 0 ) {
  			Debug( LDAP_DEBUG_ANY, "%s "
  				"\"bindpw\" statement is deprecated; "
  				"use \"acl-passwd\" instead\n",
  				c->log, 0, 0 );
  			/* FIXME: some day we'll need to throw an error */
  		}
  
  		ber_str2bv( c->argv[ 1 ], 0L, 1, &mt->mt_bindpw );
  		break;
  
  	case LDAP_BACK_CFG_REBIND:
  	/* save bind creds for referral rebinds? */
  		if ( c->argc == 1 || c->value_int ) {
  			mc->mc_flags |= LDAP_BACK_F_SAVECRED;
  		} else {
  			mc->mc_flags &= ~LDAP_BACK_F_SAVECRED;
  		}
  		break;
  
  	case LDAP_BACK_CFG_CHASE:
  		if ( c->argc == 1 || c->value_int ) {
  			mc->mc_flags |= LDAP_BACK_F_CHASE_REFERRALS;
  		} else {
  			mc->mc_flags &= ~LDAP_BACK_F_CHASE_REFERRALS;
  		}
  		break;
  
  	case LDAP_BACK_CFG_TLS:
  		i = verb_to_mask( c->argv[1], tls_mode );
  		if ( BER_BVISNULL( &tls_mode[i].word ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"%s unknown argument \"%s\"",
  				c->argv[0], c->argv[1] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mc->mc_flags &= ~LDAP_BACK_F_TLS_MASK;
  		mc->mc_flags |= tls_mode[i].mask;
  
  		if ( c->argc > 2 ) {
  			if ( c->op == SLAP_CONFIG_ADD && mi->mi_ntargets == 0 ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"need \"uri\" directive first" );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  
  			for ( i = 2; i < c->argc; i++ ) {
  				if ( bindconf_tls_parse( c->argv[i], &mt->mt_tls ))
  					return 1;
  			}
  			bindconf_tls_defaults( &mt->mt_tls );
  		}
  		break;
  
  	case LDAP_BACK_CFG_T_F:
  		i = verb_to_mask( c->argv[1], t_f_mode );
  		if ( BER_BVISNULL( &t_f_mode[i].word ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"%s unknown argument \"%s\"",
  				c->argv[0], c->argv[1] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mc->mc_flags &= ~LDAP_BACK_F_T_F_MASK2;
  		mc->mc_flags |= t_f_mode[i].mask;
  		break;
  
  	case LDAP_BACK_CFG_ONERR:
  	/* onerr? */
  		i = verb_to_mask( c->argv[1], onerr_mode );
  		if ( BER_BVISNULL( &onerr_mode[i].word ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"%s unknown argument \"%s\"",
  				c->argv[0], c->argv[1] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mi->mi_flags &= ~META_BACK_F_ONERR_MASK;
  		mi->mi_flags |= onerr_mode[i].mask;
  		break;
  
  	case LDAP_BACK_CFG_PSEUDOROOT_BIND_DEFER:
  	/* bind-defer? */
  		if ( c->argc == 1 || c->value_int ) {
  			mi->mi_flags |= META_BACK_F_DEFER_ROOTDN_BIND;
  		} else {
  			mi->mi_flags &= ~META_BACK_F_DEFER_ROOTDN_BIND;
  		}
  		break;
  
  	case LDAP_BACK_CFG_SINGLECONN:
  	/* single-conn? */
  		if ( mi->mi_ntargets > 0 ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"\"%s\" must appear before target definitions",
  				c->argv[0] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return( 1 );
  		}
  		if ( c->value_int ) {
  			mi->mi_flags |= LDAP_BACK_F_SINGLECONN;
  		} else {
  			mi->mi_flags &= ~LDAP_BACK_F_SINGLECONN;
  		}
  		break;
  
  	case LDAP_BACK_CFG_USETEMP:
  	/* use-temporaries? */
  		if ( mi->mi_ntargets > 0 ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"\"%s\" must appear before target definitions",
  				c->argv[0] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return( 1 );
  		}
  		if ( c->value_int ) {
  			mi->mi_flags |= LDAP_BACK_F_USE_TEMPORARIES;
  		} else {
  			mi->mi_flags &= ~LDAP_BACK_F_USE_TEMPORARIES;
  		}
  		break;
  
  	case LDAP_BACK_CFG_CONNPOOLMAX:
  	/* privileged connections pool max size ? */
  		if ( mi->mi_ntargets > 0 ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"\"%s\" must appear before target definitions",
  				c->argv[0] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return( 1 );
  		}
  
  		if ( c->value_int < LDAP_BACK_CONN_PRIV_MIN
  			|| c->value_int > LDAP_BACK_CONN_PRIV_MAX )
  		{
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"invalid max size " "of privileged "
  				"connections pool \"%s\" "
  				"in \"conn-pool-max <n> "
  				"(must be between %d and %d)\"",
  				c->argv[ 1 ],
  				LDAP_BACK_CONN_PRIV_MIN,
  				LDAP_BACK_CONN_PRIV_MAX );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mi->mi_conn_priv_max = c->value_int;
  		break;
  
  	case LDAP_BACK_CFG_CANCEL:
  		i = verb_to_mask( c->argv[1], cancel_mode );
  		if ( BER_BVISNULL( &cancel_mode[i].word ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"%s unknown argument \"%s\"",
  				c->argv[0], c->argv[1] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mc->mc_flags &= ~LDAP_BACK_F_CANCEL_MASK2;
  		mc->mc_flags |= t_f_mode[i].mask;
  		break;
  
  	case LDAP_BACK_CFG_TIMEOUT:
  		for ( i = 1; i < c->argc; i++ ) {
  			if ( isdigit( (unsigned char) c->argv[ i ][ 0 ] ) ) {
  				int		j;
  				unsigned	u;
  
  				if ( lutil_atoux( &u, c->argv[ i ], 0 ) != 0 ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg),
  						"unable to parse timeout \"%s\"",
  						c->argv[ i ] );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					return 1;
  				}
  
  				for ( j = 0; j < SLAP_OP_LAST; j++ ) {
  					mc->mc_timeout[ j ] = u;
  				}
  
  				continue;
  			}
  
  			if ( slap_cf_aux_table_parse( c->argv[ i ], mc->mc_timeout, timeout_table, "slapd-meta timeout" ) ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg),
  					"unable to parse timeout \"%s\"",
  					c->argv[ i ] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  		}
  		break;
  
  	case LDAP_BACK_CFG_PSEUDOROOTDN:
  	/* name to use as pseudo-root dn */
  		/*
  		 * exact replacement:
  		 *
  
  idassert-bind	bindmethod=simple
  		binddn=<pseudorootdn>
  		credentials=<pseudorootpw>
  		mode=none
  		flags=non-prescriptive
  idassert-authzFrom	"dn:<rootdn>"
  
  		 * so that only when authc'd as <rootdn> the proxying occurs
  		 * rebinding as the <pseudorootdn> without proxyAuthz.
  		 */
  
  		Debug( LDAP_DEBUG_ANY,
  			"%s: \"pseudorootdn\", \"pseudorootpw\" are no longer supported; "
  			"use \"idassert-bind\" and \"idassert-authzFrom\" instead.\n",
  			c->log, 0, 0 );
  
  		{
  			char	binddn[ SLAP_TEXT_BUFLEN ];
  			char	*cargv[] = {
  				"idassert-bind",
  				"bindmethod=simple",
  				NULL,
  				"mode=none",
  				"flags=non-prescriptive",
  				NULL
  			};
  			char **oargv;
  			int oargc;
  			int	cargc = 5;
  			int	rc;
  
  
  			if ( BER_BVISNULL( &c->be->be_rootndn ) ) {
  				Debug( LDAP_DEBUG_ANY, "%s: \"pseudorootpw\": \"rootdn\" must be defined first.\n",
  					c->log, 0, 0 );
  				return 1;
  			}
  
  			if ( sizeof( binddn ) <= (unsigned) snprintf( binddn,
  					sizeof( binddn ), "binddn=%s", c->argv[ 1 ] ))
  			{
  				Debug( LDAP_DEBUG_ANY, "%s: \"pseudorootdn\" too long.\n",
  					c->log, 0, 0 );
  				return 1;
  			}
  			cargv[ 2 ] = binddn;
  
  			oargv = c->argv;
  			oargc = c->argc;
  			c->argv = cargv;
  			c->argc = cargc;
  			rc = mi->mi_ldap_extra->idassert_parse( c, &mt->mt_idassert );
  			c->argv = oargv;
  			c->argc = oargc;
  			if ( rc == 0 ) {
  				struct berval	bv;
  
  				if ( mt->mt_idassert_authz != NULL ) {
  					Debug( LDAP_DEBUG_ANY, "%s: \"idassert-authzFrom\" already defined (discarded).\n",
  						c->log, 0, 0 );
  					ber_bvarray_free( mt->mt_idassert_authz );
  					mt->mt_idassert_authz = NULL;
  				}
  
  				assert( !BER_BVISNULL( &mt->mt_idassert_authcDN ) );
  
  				bv.bv_len = STRLENOF( "dn:" ) + c->be->be_rootndn.bv_len;
  				bv.bv_val = ber_memalloc( bv.bv_len + 1 );
  				AC_MEMCPY( bv.bv_val, "dn:", STRLENOF( "dn:" ) );
  				AC_MEMCPY( &bv.bv_val[ STRLENOF( "dn:" ) ], c->be->be_rootndn.bv_val, c->be->be_rootndn.bv_len + 1 );
  
  				ber_bvarray_add( &mt->mt_idassert_authz, &bv );
  			}
  
  			return rc;
  		}
  		break;
  
  	case LDAP_BACK_CFG_PSEUDOROOTPW:
  	/* password to use as pseudo-root */
  		Debug( LDAP_DEBUG_ANY,
  			"%s: \"pseudorootdn\", \"pseudorootpw\" are no longer supported; "
  			"use \"idassert-bind\" and \"idassert-authzFrom\" instead.\n",
  			c->log, 0, 0 );
  
  		if ( BER_BVISNULL( &mt->mt_idassert_authcDN ) ) {
  			Debug( LDAP_DEBUG_ANY, "%s: \"pseudorootpw\": \"pseudorootdn\" must be defined first.\n",
  				c->log, 0, 0 );
  			return 1;
  		}
  
  		if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) {
  			memset( mt->mt_idassert_passwd.bv_val, 0,
  				mt->mt_idassert_passwd.bv_len );
  			ber_memfree( mt->mt_idassert_passwd.bv_val );
  		}
  		ber_str2bv( c->argv[ 1 ], 0, 1, &mt->mt_idassert_passwd );
  		break;
  
  	case LDAP_BACK_CFG_IDASSERT_BIND:
  	/* idassert-bind */
  		rc = mi->mi_ldap_extra->idassert_parse( c, &mt->mt_idassert );
  		break;
  
  	case LDAP_BACK_CFG_IDASSERT_AUTHZFROM:
  	/* idassert-authzFrom */
  		rc = mi->mi_ldap_extra->idassert_authzfrom_parse( c, &mt->mt_idassert );
  		break;
  
  	case LDAP_BACK_CFG_QUARANTINE:
  	/* quarantine */
  		if ( META_BACK_CMN_QUARANTINE( mc ) )
  		{
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"quarantine already defined" );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  
  		if ( mt ) {
  			mc->mc_quarantine.ri_interval = NULL;
  			mc->mc_quarantine.ri_num = NULL;
  			if ( !META_BACK_QUARANTINE( mi ) ) {
  				ldap_pvt_thread_mutex_init( &mt->mt_quarantine_mutex );
  			}
  		}
  
  		if ( mi->mi_ldap_extra->retry_info_parse( c->argv[ 1 ], &mc->mc_quarantine, c->cr_msg, sizeof( c->cr_msg ) ) ) {
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  
  		mc->mc_flags |= LDAP_BACK_F_QUARANTINE;
  		break;
  
  #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  	case LDAP_BACK_CFG_ST_REQUEST:
  	/* session tracking request */
  		if ( c->value_int ) {
  			mc->mc_flags |= LDAP_BACK_F_ST_REQUEST;
  		} else {
  			mc->mc_flags &= ~LDAP_BACK_F_ST_REQUEST;
  		}
  		break;
  #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
  
  	case LDAP_BACK_CFG_SUFFIXM:	/* FALLTHRU */
  	case LDAP_BACK_CFG_REWRITE: {
  	/* rewrite stuff ... */
  		ConfigArgs ca = { 0 };
  		char *line, **argv;
  		struct rewrite_info *rwi;
  		int cnt = 0, argc, ix = c->valx;
  
  		if ( mt->mt_rwmap.rwm_bva_rewrite ) {
  			for ( ; !BER_BVISNULL( &mt->mt_rwmap.rwm_bva_rewrite[ cnt ] ); cnt++ )
  				/* count */ ;
  		}
  
  		if ( ix >= cnt || ix < 0 ) {
  			ix = cnt;
  		} else {
  			rwi = mt->mt_rwmap.rwm_rw;
  
  			mt->mt_rwmap.rwm_rw = NULL;
  			rc = meta_rwi_init( &mt->mt_rwmap.rwm_rw );
  
  			/* re-parse all rewrite rules, up to the one
  			 * that needs to be added */
  			ca.fname = c->fname;
  			ca.lineno = c->lineno;
  			for ( i = 0; i < ix; i++ ) {
  				ca.line = mt->mt_rwmap.rwm_bva_rewrite[ i ].bv_val;
  				ca.argc = 0;
  				config_fp_parse_line( &ca );
  
  				if ( !strcasecmp( ca.argv[0], "suffixmassage" )) {
  					rc = meta_suffixm_config( &ca, ca.argc, ca.argv, mt );
  				} else {
  					rc = rewrite_parse( mt->mt_rwmap.rwm_rw,
  						c->fname, c->lineno, ca.argc, ca.argv );
  				}
  				assert( rc == 0 );
  				ch_free( ca.argv );
  				ch_free( ca.tline );
  			}
  		}
  		argc = c->argc;
  		argv = c->argv;
  		if ( c->op != SLAP_CONFIG_ADD ) {
  			argc--;
  			argv++;
  		}
  		/* add the new rule */
  		if ( !strcasecmp( argv[0], "suffixmassage" )) {
  			rc = meta_suffixm_config( c, argc, argv, mt );
  		} else {
  			rc = rewrite_parse( mt->mt_rwmap.rwm_rw,
  						c->fname, c->lineno, argc, argv );
  		}
  		if ( rc ) {
  			if ( ix < cnt ) {
  				rewrite_info_delete( &mt->mt_rwmap.rwm_rw );
  				mt->mt_rwmap.rwm_rw = rwi;
  			}
  			return 1;
  		}
  		if ( ix < cnt ) {
  			for ( ; i < cnt; i++ ) {
  				ca.line = mt->mt_rwmap.rwm_bva_rewrite[ i ].bv_val;
  				ca.argc = 0;
  				config_fp_parse_line( &ca );
  
  				if ( !strcasecmp( ca.argv[0], "suffixmassage" )) {
  					rc = meta_suffixm_config( &ca, ca.argc, ca.argv, mt );
  				} else {
  					rc = rewrite_parse( mt->mt_rwmap.rwm_rw,
  						c->fname, c->lineno, ca.argc, argv );
  				}
  				assert( rc == 0 );
  				ch_free( ca.argv );
  				ch_free( ca.tline );
  			}
  		}
  
  		/* save the rule info */
  		line = ldap_charray2str( argv, "\" \"" );
  		if ( line != NULL ) {
  			struct berval bv;
  			int len = strlen( argv[ 0 ] );
  
  			ber_str2bv( line, 0, 0, &bv );
  			AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
  				bv.bv_len - ( len + 1 ));
  			bv.bv_val[ bv.bv_len - 1] = '"';
  			ber_bvarray_add( &mt->mt_rwmap.rwm_bva_rewrite, &bv );
  			/* move it to the right slot */
  			if ( ix < cnt ) {
  				for ( i=cnt; i>ix; i-- )
  					mt->mt_rwmap.rwm_bva_rewrite[i+1] = mt->mt_rwmap.rwm_bva_rewrite[i];
  				mt->mt_rwmap.rwm_bva_rewrite[i] = bv;
  
  				/* destroy old rules */
  				rewrite_info_delete( &rwi );
  			}
  		}
  		} break;
  
  	case LDAP_BACK_CFG_MAP: {
  	/* objectclass/attribute mapping */
  		ConfigArgs ca = { 0 };
  		char *argv[5];
  		struct ldapmap rwm_oc;
  		struct ldapmap rwm_at;
  		int cnt = 0, ix = c->valx;
  
  		if ( mt->mt_rwmap.rwm_bva_map ) {
  			for ( ; !BER_BVISNULL( &mt->mt_rwmap.rwm_bva_map[ cnt ] ); cnt++ )
  				/* count */ ;
  		}
  
  		if ( ix >= cnt || ix < 0 ) {
  			ix = cnt;
  		} else {
  			rwm_oc = mt->mt_rwmap.rwm_oc;
  			rwm_at = mt->mt_rwmap.rwm_at;
  
  			memset( &mt->mt_rwmap.rwm_oc, 0, sizeof( mt->mt_rwmap.rwm_oc ) );
  			memset( &mt->mt_rwmap.rwm_at, 0, sizeof( mt->mt_rwmap.rwm_at ) );
  
  			/* re-parse all mappings, up to the one
  			 * that needs to be added */
  			argv[0] = c->argv[0];
  			ca.fname = c->fname;
  			ca.lineno = c->lineno;
  			for ( i = 0; i < ix; i++ ) {
  				ca.line = mt->mt_rwmap.rwm_bva_map[ i ].bv_val;
  				ca.argc = 0;
  				config_fp_parse_line( &ca );
  
  				argv[1] = ca.argv[0];
  				argv[2] = ca.argv[1];
  				argv[3] = ca.argv[2];
  				argv[4] = ca.argv[3];
  				ch_free( ca.argv );
  				ca.argv = argv;
  				ca.argc++;
  				rc = ldap_back_map_config( &ca, &mt->mt_rwmap.rwm_oc,
  					&mt->mt_rwmap.rwm_at );
  
  				ch_free( ca.tline );
  				ca.tline = NULL;
  				ca.argv = NULL;
  
  				/* in case of failure, restore
  				 * the existing mapping */
  				if ( rc ) {
  					goto map_fail;
  				}
  			}
  		}
  		/* add the new mapping */
  		rc = ldap_back_map_config( c, &mt->mt_rwmap.rwm_oc,
  					&mt->mt_rwmap.rwm_at );
  		if ( rc ) {
  			goto map_fail;
  		}
  
  		if ( ix < cnt ) {
  			for ( ; i<cnt ; cnt++ ) {
  				ca.line = mt->mt_rwmap.rwm_bva_map[ i ].bv_val;
  				ca.argc = 0;
  				config_fp_parse_line( &ca );
  
  				argv[1] = ca.argv[0];
  				argv[2] = ca.argv[1];
  				argv[3] = ca.argv[2];
  				argv[4] = ca.argv[3];
  
  				ch_free( ca.argv );
  				ca.argv = argv;
  				ca.argc++;
  				rc = ldap_back_map_config( &ca, &mt->mt_rwmap.rwm_oc,
  					&mt->mt_rwmap.rwm_at );
  
  				ch_free( ca.tline );
  				ca.tline = NULL;
  				ca.argv = NULL;
  
  				/* in case of failure, restore
  				 * the existing mapping */
  				if ( rc ) {
  					goto map_fail;
  				}
  			}
  		}
  
  		/* save the map info */
  		argv[0] = ldap_charray2str( &c->argv[ 1 ], " " );
  		if ( argv[0] != NULL ) {
  			struct berval bv;
  			ber_str2bv( argv[0], 0, 0, &bv );
  			ber_bvarray_add( &mt->mt_rwmap.rwm_bva_map, &bv );
  			/* move it to the right slot */
  			if ( ix < cnt ) {
  				for ( i=cnt; i>ix; i-- )
  					mt->mt_rwmap.rwm_bva_map[i+1] = mt->mt_rwmap.rwm_bva_map[i];
  				mt->mt_rwmap.rwm_bva_map[i] = bv;
  
  				/* destroy old mapping */
  				meta_back_map_free( &rwm_oc );
  				meta_back_map_free( &rwm_at );
  			}
  		}
  		break;
  
  map_fail:;
  		if ( ix < cnt ) {
  			meta_back_map_free( &mt->mt_rwmap.rwm_oc );
  			meta_back_map_free( &mt->mt_rwmap.rwm_at );
  			mt->mt_rwmap.rwm_oc = rwm_oc;
  			mt->mt_rwmap.rwm_at = rwm_at;
  		}
  		} break;
  
  	case LDAP_BACK_CFG_NRETRIES: {
  		int		nretries = META_RETRY_UNDEFINED;
  
  		if ( strcasecmp( c->argv[ 1 ], "forever" ) == 0 ) {
  			nretries = META_RETRY_FOREVER;
  
  		} else if ( strcasecmp( c->argv[ 1 ], "never" ) == 0 ) {
  			nretries = META_RETRY_NEVER;
  
  		} else {
  			if ( lutil_atoi( &nretries, c->argv[ 1 ] ) != 0 ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"unable to parse nretries {never|forever|<retries>}: \"%s\"",
  					c->argv[ 1 ] );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  		}
  
  		mc->mc_nretries = nretries;
  		} break;
  
  	case LDAP_BACK_CFG_VERSION:
  		if ( c->value_int != 0 && ( c->value_int < LDAP_VERSION_MIN || c->value_int > LDAP_VERSION_MAX ) ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unsupported protocol version \"%s\"",
  				c->argv[ 1 ] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return 1;
  		}
  		mc->mc_version = c->value_int;
  		break;
  
  	case LDAP_BACK_CFG_NOREFS:
  	/* do not return search references */
  		if ( c->value_int ) {
  			mc->mc_flags |= LDAP_BACK_F_NOREFS;
  		} else {
  			mc->mc_flags &= ~LDAP_BACK_F_NOREFS;
  		}
  		break;
  
  	case LDAP_BACK_CFG_NOUNDEFFILTER:
  	/* do not propagate undefined search filters */
  		if ( c->value_int ) {
  			mc->mc_flags |= LDAP_BACK_F_NOUNDEFFILTER;
  		} else {
  			mc->mc_flags &= ~LDAP_BACK_F_NOUNDEFFILTER;
  		}
  		break;
  
  #ifdef SLAPD_META_CLIENT_PR
  	case LDAP_BACK_CFG_CLIENT_PR:
  		if ( strcasecmp( c->argv[ 1 ], "accept-unsolicited" ) == 0 ) {
  			mc->mc_ps = META_CLIENT_PR_ACCEPT_UNSOLICITED;
  
  		} else if ( strcasecmp( c->argv[ 1 ], "disable" ) == 0 ) {
  			mc->mc_ps = META_CLIENT_PR_DISABLE;
  
  		} else if ( lutil_atoi( &mc->mc_ps, c->argv[ 1 ] ) || mc->mc_ps < -1 ) {
  			snprintf( c->cr_msg, sizeof( c->cr_msg ),
  				"unable to parse client-pr {accept-unsolicited|disable|<size>}: \"%s\"",
  				c->argv[ 1 ] );
  			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  			return( 1 );
  		}
  		break;
  #endif /* SLAPD_META_CLIENT_PR */
  
  	case LDAP_BACK_CFG_KEEPALIVE:
  		slap_keepalive_parse( ber_bvstrdup(c->argv[1]),
  				 &mt->mt_tls.sb_keepalive, 0, 0, 0);
  		break;
  
  	/* anything else */
  	default:
  		return SLAP_CONF_UNKNOWN;
  	}
  
  	return rc;
  }
  
  int
  meta_back_init_cf( BackendInfo *bi )
  {
  	int			rc;
  	AttributeDescription	*ad = NULL;
  	const char		*text;
  
  	/* Make sure we don't exceed the bits reserved for userland */
  	config_check_userland( LDAP_BACK_CFG_LAST );
  
  	bi->bi_cf_ocs = metaocs;
  
  	rc = config_register_schema( metacfg, metaocs );
  	if ( rc ) {
  		return rc;
  	}
  
  	/* setup olcDbAclPasswd and olcDbIDAssertPasswd
  	 * to be base64-encoded when written in LDIF form;
  	 * basically, we don't care if it fails */
  	rc = slap_str2ad( "olcDbACLPasswd", &ad, &text );
  	if ( rc ) {
  		Debug( LDAP_DEBUG_ANY, "config_back_initialize: "
  			"warning, unable to get \"olcDbACLPasswd\" "
  			"attribute description: %d: %s\n",
  			rc, text, 0 );
  	} else {
  		(void)ldif_must_b64_encode_register( ad->ad_cname.bv_val,
  			ad->ad_type->sat_oid );
  	}
  
  	ad = NULL;
  	rc = slap_str2ad( "olcDbIDAssertPasswd", &ad, &text );
  	if ( rc ) {
  		Debug( LDAP_DEBUG_ANY, "config_back_initialize: "
  			"warning, unable to get \"olcDbIDAssertPasswd\" "
  			"attribute description: %d: %s\n",
  			rc, text, 0 );
  	} else {
  		(void)ldif_must_b64_encode_register( ad->ad_cname.bv_val,
  			ad->ad_type->sat_oid );
  	}
  
  	return 0;
  }
  
  static int
  ldap_back_map_config(
  		ConfigArgs *c,
  		struct ldapmap	*oc_map,
  		struct ldapmap	*at_map )
  {
  	struct ldapmap		*map;
  	struct ldapmapping	*mapping;
  	char			*src, *dst;
  	int			is_oc = 0;
  
  	if ( strcasecmp( c->argv[ 1 ], "objectclass" ) == 0 ) {
  		map = oc_map;
  		is_oc = 1;
  
  	} else if ( strcasecmp( c->argv[ 1 ], "attribute" ) == 0 ) {
  		map = at_map;
  
  	} else {
  		snprintf( c->cr_msg, sizeof(c->cr_msg),
  			"%s unknown argument \"%s\"",
  			c->argv[0], c->argv[1] );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		return 1;
  	}
  
  	if ( !is_oc && map->map == NULL ) {
  		/* only init if required */
  		ldap_back_map_init( map, &mapping );
  	}
  
  	if ( strcmp( c->argv[ 2 ], "*" ) == 0 ) {
  		if ( c->argc < 4 || strcmp( c->argv[ 3 ], "*" ) == 0 ) {
  			map->drop_missing = ( c->argc < 4 );
  			goto success_return;
  		}
  		src = dst = c->argv[ 3 ];
  
  	} else if ( c->argc < 4 ) {
  		src = "";
  		dst = c->argv[ 2 ];
  
  	} else {
  		src = c->argv[ 2 ];
  		dst = ( strcmp( c->argv[ 3 ], "*" ) == 0 ? src : c->argv[ 3 ] );
  	}
  
  	if ( ( map == at_map )
  		&& ( strcasecmp( src, "objectclass" ) == 0
  			|| strcasecmp( dst, "objectclass" ) == 0 ) )
  	{
  		snprintf( c->cr_msg, sizeof(c->cr_msg),
  			"objectclass attribute cannot be mapped" );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		return 1;
  	}
  
  	mapping = (struct ldapmapping *)ch_calloc( 2,
  		sizeof(struct ldapmapping) );
  	if ( mapping == NULL ) {
  		snprintf( c->cr_msg, sizeof(c->cr_msg),
  			"out of memory" );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		return 1;
  	}
  	ber_str2bv( src, 0, 1, &mapping[ 0 ].src );
  	ber_str2bv( dst, 0, 1, &mapping[ 0 ].dst );
  	mapping[ 1 ].src = mapping[ 0 ].dst;
  	mapping[ 1 ].dst = mapping[ 0 ].src;
  
  	/*
  	 * schema check
  	 */
  	if ( is_oc ) {
  		if ( src[ 0 ] != '\0' ) {
  			if ( oc_bvfind( &mapping[ 0 ].src ) == NULL ) {
  				Debug( LDAP_DEBUG_ANY,
  	"warning, source objectClass '%s' should be defined in schema\n",
  					c->log, src, 0 );
  
  				/*
  				 * FIXME: this should become an err
  				 */
  				goto error_return;
  			}
  		}
  
  		if ( oc_bvfind( &mapping[ 0 ].dst ) == NULL ) {
  			Debug( LDAP_DEBUG_ANY,
  	"warning, destination objectClass '%s' is not defined in schema\n",
  				c->log, dst, 0 );
  		}
  	} else {
  		int			rc;
  		const char		*text = NULL;
  		AttributeDescription	*ad = NULL;
  
  		if ( src[ 0 ] != '\0' ) {
  			rc = slap_bv2ad( &mapping[ 0 ].src, &ad, &text );
  			if ( rc != LDAP_SUCCESS ) {
  				Debug( LDAP_DEBUG_ANY,
  	"warning, source attributeType '%s' should be defined in schema\n",
  					c->log, src, 0 );
  
  				/*
  				 * FIXME: this should become an err
  				 */
  				/*
  				 * we create a fake "proxied" ad
  				 * and add it here.
  				 */
  
  				rc = slap_bv2undef_ad( &mapping[ 0 ].src,
  						&ad, &text, SLAP_AD_PROXIED );
  				if ( rc != LDAP_SUCCESS ) {
  					snprintf( c->cr_msg, sizeof( c->cr_msg ),
  						"source attributeType \"%s\": %d (%s)",
  						src, rc, text ? text : "" );
  					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  					goto error_return;
  				}
  			}
  
  			ad = NULL;
  		}
  
  		rc = slap_bv2ad( &mapping[ 0 ].dst, &ad, &text );
  		if ( rc != LDAP_SUCCESS ) {
  			Debug( LDAP_DEBUG_ANY,
  	"warning, destination attributeType '%s' is not defined in schema\n",
  				c->log, dst, 0 );
  
  			/*
  			 * we create a fake "proxied" ad
  			 * and add it here.
  			 */
  
  			rc = slap_bv2undef_ad( &mapping[ 0 ].dst,
  					&ad, &text, SLAP_AD_PROXIED );
  			if ( rc != LDAP_SUCCESS ) {
  				snprintf( c->cr_msg, sizeof( c->cr_msg ),
  					"destination attributeType \"%s\": %d (%s)\n",
  					dst, rc, text ? text : "" );
  				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  				return 1;
  			}
  		}
  	}
  
  	if ( (src[ 0 ] != '\0' && avl_find( map->map, (caddr_t)&mapping[ 0 ], mapping_cmp ) != NULL)
  			|| avl_find( map->remap, (caddr_t)&mapping[ 1 ], mapping_cmp ) != NULL)
  	{
  		snprintf( c->cr_msg, sizeof( c->cr_msg ),
  			"duplicate mapping found." );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
  		goto error_return;
  	}
  
  	if ( src[ 0 ] != '\0' ) {
  		avl_insert( &map->map, (caddr_t)&mapping[ 0 ],
  					mapping_cmp, mapping_dup );
  	}
  	avl_insert( &map->remap, (caddr_t)&mapping[ 1 ],
  				mapping_cmp, mapping_dup );
  
  success_return:;
  	return 0;
  
  error_return:;
  	if ( mapping ) {
  		ch_free( mapping[ 0 ].src.bv_val );
  		ch_free( mapping[ 0 ].dst.bv_val );
  		ch_free( mapping );
  	}
  
  	return 1;
  }
  
  
  #ifdef ENABLE_REWRITE
  static char *
  suffix_massage_regexize( const char *s )
  {
  	char *res, *ptr;
  	const char *p, *r;
  	int i;
  
  	if ( s[ 0 ] == '\0' ) {
  		return ch_strdup( "^(.+)$" );
  	}
  
  	for ( i = 0, p = s;
  			( r = strchr( p, ',' ) ) != NULL;
  			p = r + 1, i++ )
  		;
  
  	res = ch_calloc( sizeof( char ),
  			strlen( s )
  			+ STRLENOF( "((.+),)?" )
  			+ STRLENOF( "[ ]?" ) * i
  			+ STRLENOF( "$" ) + 1 );
  
  	ptr = lutil_strcopy( res, "((.+),)?" );
  	for ( i = 0, p = s;
  			( r = strchr( p, ',' ) ) != NULL;
  			p = r + 1 , i++ ) {
  		ptr = lutil_strncopy( ptr, p, r - p + 1 );
  		ptr = lutil_strcopy( ptr, "[ ]?" );
  
  		if ( r[ 1 ] == ' ' ) {
  			r++;
  		}
  	}
  	ptr = lutil_strcopy( ptr, p );
  	ptr[ 0 ] = '$';
  	ptr++;
  	ptr[ 0 ] = '\0';
  
  	return res;
  }
  
  static char *
  suffix_massage_patternize( const char *s, const char *p )
  {
  	ber_len_t	len;
  	char		*res, *ptr;
  
  	len = strlen( p );
  
  	if ( s[ 0 ] == '\0' ) {
  		len++;
  	}
  
  	res = ch_calloc( sizeof( char ), len + STRLENOF( "%1" ) + 1 );
  	if ( res == NULL ) {
  		return NULL;
  	}
  
  	ptr = lutil_strcopy( res, ( p[ 0 ] == '\0' ? "%2" : "%1" ) );
  	if ( s[ 0 ] == '\0' ) {
  		ptr[ 0 ] = ',';
  		ptr++;
  	}
  	lutil_strcopy( ptr, p );
  
  	return res;
  }
  
  int
  suffix_massage_config(
  		struct rewrite_info *info,
  		struct berval *pvnc,
  		struct berval *nvnc,
  		struct berval *prnc,
  		struct berval *nrnc
  )
  {
  	char *rargv[ 5 ];
  	int line = 0;
  
  	rargv[ 0 ] = "rewriteEngine";
  	rargv[ 1 ] = "on";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "default";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
  
  	rargv[ 0 ] = "rewriteRule";
  	rargv[ 1 ] = suffix_massage_regexize( pvnc->bv_val );
  	rargv[ 2 ] = suffix_massage_patternize( pvnc->bv_val, prnc->bv_val );
  	rargv[ 3 ] = ":";
  	rargv[ 4 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  	ch_free( rargv[ 1 ] );
  	ch_free( rargv[ 2 ] );
  
  	if ( BER_BVISEMPTY( pvnc ) ) {
  		rargv[ 0 ] = "rewriteRule";
  		rargv[ 1 ] = "^$";
  		rargv[ 2 ] = prnc->bv_val;
  		rargv[ 3 ] = ":";
  		rargv[ 4 ] = NULL;
  		rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  	}
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "searchEntryDN";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
  
  	rargv[ 0 ] = "rewriteRule";
  	rargv[ 1 ] = suffix_massage_regexize( prnc->bv_val );
  	rargv[ 2 ] = suffix_massage_patternize( prnc->bv_val, pvnc->bv_val );
  	rargv[ 3 ] = ":";
  	rargv[ 4 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  	ch_free( rargv[ 1 ] );
  	ch_free( rargv[ 2 ] );
  
  	if ( BER_BVISEMPTY( prnc ) ) {
  		rargv[ 0 ] = "rewriteRule";
  		rargv[ 1 ] = "^$";
  		rargv[ 2 ] = pvnc->bv_val;
  		rargv[ 3 ] = ":";
  		rargv[ 4 ] = NULL;
  		rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  	}
  
  	/* backward compatibility */
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "searchResult";
  	rargv[ 2 ] = "alias";
  	rargv[ 3 ] = "searchEntryDN";
  	rargv[ 4 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "matchedDN";
  	rargv[ 2 ] = "alias";
  	rargv[ 3 ] = "searchEntryDN";
  	rargv[ 4 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "searchAttrDN";
  	rargv[ 2 ] = "alias";
  	rargv[ 3 ] = "searchEntryDN";
  	rargv[ 4 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
  
  	/* NOTE: this corresponds to #undef'ining RWM_REFERRAL_REWRITE;
  	 * see servers/slapd/overlays/rwm.h for details */
          rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "referralAttrDN";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
  
  	rargv[ 0 ] = "rewriteContext";
  	rargv[ 1 ] = "referralDN";
  	rargv[ 2 ] = NULL;
  	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
  
  	return 0;
  }
  #endif /* ENABLE_REWRITE */
  
  