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config.c

/* config.c - ldap backend configuration file routine */
/* $OpenLDAP: pkg/ldap/servers/slapd/back-ldap/config.c,v 1.115.2.8 2008/02/11 23:26:46 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 2003-2008 The OpenLDAP Foundation.
 * Portions Copyright 1999-2003 Howard Chu.
 * Portions Copyright 2000-2003 Pierangelo Masarati.
 * 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/ctype.h>
#include <ac/socket.h>

#include "slap.h"
#include "config.h"
#include "back-ldap.h"
#include "lutil.h"
#include "ldif.h"
#undef ldap_debug
/* for advanced URL parsing */
#include "../../../libraries/libldap/ldap-int.h"

static SLAP_EXTOP_MAIN_FN ldap_back_exop_whoami;

static ConfigDriver ldap_back_cf_gen;

enum {
      LDAP_BACK_CFG_URI = 1,
      LDAP_BACK_CFG_TLS,
      LDAP_BACK_CFG_ACL_AUTHCDN,
      LDAP_BACK_CFG_ACL_PASSWD,
      LDAP_BACK_CFG_ACL_METHOD,
      LDAP_BACK_CFG_ACL_BIND,
      LDAP_BACK_CFG_IDASSERT_MODE,
      LDAP_BACK_CFG_IDASSERT_AUTHCDN,
      LDAP_BACK_CFG_IDASSERT_PASSWD,
      LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
      LDAP_BACK_CFG_IDASSERT_METHOD,
      LDAP_BACK_CFG_IDASSERT_BIND,
      LDAP_BACK_CFG_REBIND,
      LDAP_BACK_CFG_CHASE,
      LDAP_BACK_CFG_T_F,
      LDAP_BACK_CFG_WHOAMI,
      LDAP_BACK_CFG_TIMEOUT,
      LDAP_BACK_CFG_IDLE_TIMEOUT,
      LDAP_BACK_CFG_CONN_TTL,
      LDAP_BACK_CFG_NETWORK_TIMEOUT,
      LDAP_BACK_CFG_VERSION,
      LDAP_BACK_CFG_SINGLECONN,
      LDAP_BACK_CFG_USETEMP,
      LDAP_BACK_CFG_CONNPOOLMAX,
      LDAP_BACK_CFG_CANCEL,
      LDAP_BACK_CFG_QUARANTINE,
      LDAP_BACK_CFG_ST_REQUEST,
      LDAP_BACK_CFG_REWRITE,

      LDAP_BACK_CFG_LAST
};

static ConfigTable ldapcfg[] = {
      { "uri", "uri", 2, 2, 0,
            ARG_MAGIC|LDAP_BACK_CFG_URI,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "acl-passwd", "cred", 2, 2, 0,
            ARG_MAGIC|LDAP_BACK_CFG_ACL_PASSWD,
            ldap_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,
            ldap_back_cf_gen, NULL, NULL, NULL },
      /* deprecated, will be removed; aliases "acl-bind" */
      { "acl-method", "args", 2, 0, 0,
            ARG_MAGIC|LDAP_BACK_CFG_ACL_METHOD,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "acl-bind", "args", 2, 0, 0,
            ARG_MAGIC|LDAP_BACK_CFG_ACL_BIND,
            ldap_back_cf_gen, "( OLcfgDbAt:3.4 "
                  "NAME 'olcDbACLBind' "
                  "DESC 'Remote ACL administrative identity auth bind configuration' "
                  "SYNTAX OMsDirectoryString "
                  "SINGLE-VALUE )",
            NULL, NULL },
      { "idassert-authcDN", "DN", 2, 2, 0,
            ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHCDN,
            ldap_back_cf_gen, "( OLcfgDbAt:3.5 "
                  "NAME 'olcDbIDAssertAuthcDn' "
                  "DESC 'Remote Identity Assertion administrative identity' "
                  "OBSOLETE "
                  "SYNTAX OMsDN "
                  "SINGLE-VALUE )",
            NULL, NULL },
      /* deprecated, will be removed; partially aliases "idassert-authcDN" */
      { "proxyauthzdn", "DN", 2, 2, 0,
            ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHCDN,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "idassert-passwd", "cred", 2, 2, 0,
            ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_PASSWD,
            ldap_back_cf_gen, "( OLcfgDbAt:3.6 "
                  "NAME 'olcDbIDAssertPasswd' "
                  "DESC 'Remote Identity Assertion administrative identity credentials' "
                  "OBSOLETE "
                  "SYNTAX OMsDirectoryString "
                  "SINGLE-VALUE )",
            NULL, NULL },
      /* deprecated, will be removed; partially aliases "idassert-passwd" */
      { "proxyauthzpw", "cred", 2, 2, 0,
            ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_PASSWD,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "idassert-bind", "args", 2, 0, 0,
            ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_BIND,
            ldap_back_cf_gen, "( OLcfgDbAt:3.7 "
                  "NAME 'olcDbIDAssertBind' "
                  "DESC 'Remote Identity Assertion administrative identity auth bind configuration' "
                  "SYNTAX OMsDirectoryString "
                  "SINGLE-VALUE )",
            NULL, NULL },
      { "idassert-method", "args", 2, 0, 0,
            ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_METHOD,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "idassert-mode", "mode>|u:<user>|[dn:]<DN", 2, 0, 0,
            ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_MODE,
            ldap_back_cf_gen, "( OLcfgDbAt:3.8 "
                  "NAME 'olcDbIDAssertMode' "
                  "DESC 'Remote Identity Assertion mode' "
                  "OBSOLETE "
                  "SYNTAX OMsDirectoryString "
                  "SINGLE-VALUE)",
            NULL, NULL },
      { "idassert-authzFrom", "authzRule", 2, 2, 0,
            ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
            ldap_back_cf_gen, "( OLcfgDbAt:3.9 "
                  "NAME 'olcDbIDAssertAuthzFrom' "
                  "DESC 'Remote Identity Assertion authz rules' "
                  "SYNTAX OMsDirectoryString "
                  "X-ORDERED 'VALUES' )",
            NULL, NULL },
      { "rebind-as-user", "true|FALSE", 1, 2, 0,
            ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_REBIND,
            ldap_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,
            ldap_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,
            ldap_back_cf_gen, "( OLcfgDbAt:3.12 "
                  "NAME 'olcDbTFSupport' "
                  "DESC 'Absolute filters support' "
                  "SYNTAX OMsDirectoryString "
                  "SINGLE-VALUE )",
            NULL, NULL },
      { "proxy-whoami", "true|FALSE", 1, 2, 0,
            ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_WHOAMI,
            ldap_back_cf_gen, "( OLcfgDbAt:3.13 "
                  "NAME 'olcDbProxyWhoAmI' "
                  "DESC 'Proxy whoAmI exop' "
                  "SYNTAX OMsBoolean "
                  "SINGLE-VALUE )",
            NULL, NULL },
      { "timeout", "timeout(list)", 2, 0, 0,
            ARG_MAGIC|LDAP_BACK_CFG_TIMEOUT,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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,
            ldap_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 */
      { "suffixmassage", "[virtual]> <real", 2, 3, 0,
            ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "map", "attribute|objectClass> [*|<local>] *|<remote", 3, 4, 0,
            ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { "rewrite", "<arglist>", 2, 4, STRLENOF( "rewrite" ),
            ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
            ldap_back_cf_gen, NULL, NULL, NULL },
      { NULL, NULL, 0, 0, 0, ARG_IGNORED,
            NULL, NULL, NULL, NULL }
};

static ConfigOCs ldapocs[] = {
      { "( OLcfgDbOc:3.1 "
            "NAME 'olcLDAPConfig' "
            "DESC 'LDAP backend configuration' "
            "SUP olcDatabaseConfig "
            "MAY ( olcDbURI "
                  "$ olcDbStartTLS "
                  "$ olcDbACLAuthcDn "
                  "$ olcDbACLPasswd "
                  "$ olcDbACLBind "
                  "$ olcDbIDAssertAuthcDn "
                  "$ olcDbIDAssertPasswd "
                  "$ olcDbIDAssertBind "
                  "$ olcDbIDAssertMode "
                  "$ olcDbIDAssertAuthzFrom "
                  "$ olcDbRebindAsUser "
                  "$ olcDbChaseReferrals "
                  "$ olcDbTFSupport "
                  "$ olcDbProxyWhoAmI "
                  "$ olcDbTimeout "
                  "$ olcDbIdleTimeout "
                  "$ olcDbSingleConn "
                  "$ olcDbCancel "
                  "$ olcDbQuarantine "
                  "$ olcDbUseTemporaryConn "
                  "$ olcDbConnectionPoolMax "
            ") )",
                  Cft_Database, ldapcfg},
      { NULL, 0, NULL }
};

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 }
};

/* 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 }
};

int
slap_retry_info_parse(
      char              *in,
      slap_retry_info_t       *ri,
      char              *buf,
      ber_len_t         buflen )
{
      char              **retrylist = NULL;
      int               rc = 0;
      int               i;

      slap_str2clist( &retrylist, in, " ;" );
      if ( retrylist == NULL ) {
            return 1;
      }

      for ( i = 0; retrylist[ i ] != NULL; i++ )
            /* count */ ;

      ri->ri_interval = ch_calloc( sizeof( time_t ), i + 1 );
      ri->ri_num = ch_calloc( sizeof( int ), i + 1 );

      for ( i = 0; retrylist[ i ] != NULL; i++ ) {
            unsigned long     t;
            char        *sep = strchr( retrylist[ i ], ',' );

            if ( sep == NULL ) {
                  snprintf( buf, buflen,
                        "missing comma in retry pattern #%d \"%s\"",
                        i, retrylist[ i ] );
                  rc = 1;
                  goto done;
            }

            *sep++ = '\0';

            if ( lutil_parse_time( retrylist[ i ], &t ) ) {
                  snprintf( buf, buflen,
                        "unable to parse interval #%d \"%s\"",
                        i, retrylist[ i ] );
                  rc = 1;
                  goto done;
            }
            ri->ri_interval[ i ] = (time_t)t;

            if ( strcmp( sep, "+" ) == 0 ) {
                  if ( retrylist[ i + 1 ] != NULL ) {
                        snprintf( buf, buflen,
                              "extra cruft after retry pattern "
                              "#%d \"%s,+\" with \"forever\" mark",
                              i, retrylist[ i ] );
                        rc = 1;
                        goto done;
                  }
                  ri->ri_num[ i ] = SLAP_RETRYNUM_FOREVER;
                  
            } else if ( lutil_atoi( &ri->ri_num[ i ], sep ) ) {
                  snprintf( buf, buflen,
                        "unable to parse retry num #%d \"%s\"",
                        i, sep );
                  rc = 1;
                  goto done;
            }
      }

      ri->ri_num[ i ] = SLAP_RETRYNUM_TAIL;

      ri->ri_idx = 0;
      ri->ri_count = 0;
      ri->ri_last = (time_t)(-1);

done:;
      ldap_charray_free( retrylist );

      if ( rc ) {
            slap_retry_info_destroy( ri );
      }

      return rc;
}

int
slap_retry_info_unparse(
      slap_retry_info_t *ri,
      struct berval           *bvout )
{
      int         i;
      char        buf[ BUFSIZ * 2 ],
                  *ptr = buf;
      struct berval     bv = BER_BVNULL;

      assert( ri != NULL );
      assert( bvout != NULL );

      BER_BVZERO( bvout );

#define WHATSLEFT ( sizeof( buf ) - ( ptr - buf ) )

      for ( i = 0; ri->ri_num[ i ] != SLAP_RETRYNUM_TAIL; i++ ) {
            if ( i > 0 ) {
                  if ( WHATSLEFT <= 1 ) {
                        return 1;
                  }
                  *ptr++ = ';';
            }

            if ( lutil_unparse_time( ptr, WHATSLEFT, (long)ri->ri_interval[i] ) ) {
                  return 1;
            }
            ptr += strlen( ptr );

            if ( WHATSLEFT <= 1 ) {
                  return 1;
            }
            *ptr++ = ',';

            if ( ri->ri_num[i] == SLAP_RETRYNUM_FOREVER ) {
                  if ( WHATSLEFT <= 1 ) {
                        return 1;
                  }
                  *ptr++ = '+';

            } else {
                  ptr += snprintf( ptr, WHATSLEFT, "%d", ri->ri_num[i] );
                  if ( WHATSLEFT <= 0 ) {
                        return 1;
                  }
            }
      }

      bv.bv_val = buf;
      bv.bv_len = ptr - buf;

      ber_dupbv( bvout, &bv );

      return 0;
}

void
slap_retry_info_destroy(
      slap_retry_info_t *ri )
{
      assert( ri != NULL );

      assert( ri->ri_interval != NULL );
      ch_free( ri->ri_interval );
      ri->ri_interval = NULL;

      assert( ri->ri_num != NULL );
      ch_free( ri->ri_num );
      ri->ri_num = NULL;
}

static int
slap_idassert_authzfrom_parse( ConfigArgs *c, slap_idassert_t *si )
{
      struct berval     bv;
      struct berval     in;
      int         rc;

      if ( strcmp( c->argv[ 1 ], "*" ) == 0
            || strcmp( c->argv[ 1 ], "dn:*" ) == 0
            || strcasecmp( c->argv[ 1 ], "dn.regex:.*" ) == 0 )
      {
            if ( si->si_authz != NULL ) {
                  snprintf( c->cr_msg, sizeof( c->cr_msg ),
                        "\"idassert-authzFrom <authz>\": "
                        "\"%s\" conflicts with existing authz rules",
                        c->argv[ 1 ] );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }
 
            si->si_flags |= LDAP_BACK_AUTH_AUTHZ_ALL;
 
            return 0;
 
      } else if ( ( si->si_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) ) {
            snprintf( c->cr_msg, sizeof( c->cr_msg ),
                  "\"idassert-authzFrom <authz>\": "
                  "\"<authz>\" conflicts with \"*\"" );
            Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
            return 1;
      }
      
      ber_str2bv( c->argv[ 1 ], 0, 0, &in );
      rc = authzNormalize( 0, NULL, NULL, &in, &bv, NULL );
      if ( rc != LDAP_SUCCESS ) {
            snprintf( c->cr_msg, sizeof( c->cr_msg ),
                  "\"idassert-authzFrom <authz>\": "
                  "invalid syntax" );
            Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
            return 1;
      }
  
      ber_bvarray_add( &si->si_authz, &bv );

      return 0;
}

static int
slap_idassert_parse( ConfigArgs *c, slap_idassert_t *si )
{
      int         i;

      for ( i = 1; i < c->argc; i++ ) {
            if ( strncasecmp( c->argv[ i ], "mode=", STRLENOF( "mode=" ) ) == 0 ) {
                  char  *argvi = c->argv[ i ] + STRLENOF( "mode=" );
                  int   j;

                  j = verb_to_mask( argvi, idassert_mode );
                  if ( BER_BVISNULL( &idassert_mode[ j ].word ) ) {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                              "\"idassert-bind <args>\": "
                              "unknown mode \"%s\"",
                              argvi );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        return 1;
                  }

                  si->si_mode = idassert_mode[ j ].mask;

            } else if ( strncasecmp( c->argv[ i ], "authz=", STRLENOF( "authz=" ) ) == 0 ) {
                  char  *argvi = c->argv[ i ] + STRLENOF( "authz=" );

                  if ( strcasecmp( argvi, "native" ) == 0 ) {
                        if ( si->si_bc.sb_method != LDAP_AUTH_SASL ) {
                              snprintf( c->cr_msg, sizeof( c->cr_msg ),
                                    "\"idassert-bind <args>\": "
                                    "authz=\"native\" incompatible "
                                    "with auth method" );
                              Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                              return 1;
                        }
                        si->si_flags |= LDAP_BACK_AUTH_NATIVE_AUTHZ;

                  } else if ( strcasecmp( argvi, "proxyAuthz" ) == 0 ) {
                        si->si_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;

                  } else {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                              "\"idassert-bind <args>\": "
                              "unknown authz \"%s\"",
                              argvi );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        return 1;
                  }

            } else if ( strncasecmp( c->argv[ i ], "flags=", STRLENOF( "flags=" ) ) == 0 ) {
                  char  *argvi = c->argv[ i ] + STRLENOF( "flags=" );
                  char  **flags = ldap_str2charray( argvi, "," );
                  int   j, err = 0;

                  if ( flags == NULL ) {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                              "\"idassert-bind <args>\": "
                              "unable to parse flags \"%s\"",
                              argvi );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        return 1;
                  }

                  for ( j = 0; flags[ j ] != NULL; j++ ) {

                        if ( strcasecmp( flags[ j ], "override" ) == 0 ) {
                              si->si_flags |= LDAP_BACK_AUTH_OVERRIDE;

                        } else if ( strcasecmp( flags[ j ], "prescriptive" ) == 0 ) {
                              si->si_flags |= LDAP_BACK_AUTH_PRESCRIPTIVE;

                        } else if ( strcasecmp( flags[ j ], "non-prescriptive" ) == 0 ) {
                              si->si_flags &= ( ~LDAP_BACK_AUTH_PRESCRIPTIVE );

                        } else if ( strcasecmp( flags[ j ], "obsolete-proxy-authz" ) == 0 ) {
                              if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
                                    Debug( LDAP_DEBUG_ANY,
                                                            "%s: \"obsolete-proxy-authz\" flag "
                                                            "in \"idassert-mode <args>\" "
                                                            "incompatible with previously issued \"obsolete-encoding-workaround\" flag.\n",
                                                            c->log, 0, 0 );
                                    err = 1;
                                    break;

                              } else {
                                    si->si_flags |= LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ;
                              }

                        } else if ( strcasecmp( flags[ j ], "obsolete-encoding-workaround" ) == 0 ) {
                              if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
                                    Debug( LDAP_DEBUG_ANY,
                                                            "%s: \"obsolete-encoding-workaround\" flag "
                                                      "in \"idassert-mode <args>\" "
                                                      "incompatible with previously issued \"obsolete-proxy-authz\" flag.\n",
                                                      c->log, 0, 0 );
                                    err = 1;
                                    break;

                              } else {
                                    si->si_flags |= LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND;
                              }

                        } else {
                              snprintf( c->cr_msg, sizeof( c->cr_msg ),
                                    "\"idassert-bind <args>\": "
                                    "unknown flag \"%s\"",
                                    flags[ j ] );
                              Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                              err = 1;
                              break;
                        }
                  }

                  ldap_charray_free( flags );
                  if ( err ) {
                        return 1;
                  }

            } else if ( bindconf_parse( c->argv[ i ], &si->si_bc ) ) {
                  return 1;
            }
      }
      bindconf_tls_defaults( &si->si_bc );

      return 0;
}

/* NOTE: temporary, until back-meta is ported to back-config */
int
slap_idassert_authzfrom_parse_cf( const char *fname, int lineno, const char *arg, slap_idassert_t *si )
{
      ConfigArgs  c = { 0 };
      char        *argv[ 3 ];

      snprintf( c.log, sizeof( c.log ), "%s: line %d", fname, lineno );
      c.argc = 2;
      c.argv = argv;
      argv[ 0 ] = "idassert-authzFrom";
      argv[ 1 ] = (char *)arg;
      argv[ 2 ] = NULL;

      return slap_idassert_authzfrom_parse( &c, si );
}

int
slap_idassert_parse_cf( const char *fname, int lineno, int argc, char *argv[], slap_idassert_t *si )
{
      ConfigArgs  c = { 0 };

      snprintf( c.log, sizeof( c.log ), "%s: line %d", fname, lineno );
      c.argc = argc;
      c.argv = argv;

      return slap_idassert_parse( &c, si );
}

static int
ldap_back_cf_gen( ConfigArgs *c )
{
      ldapinfo_t  *li = ( ldapinfo_t * )c->be->be_private;
      int         rc = 0;
      int         i;

      if ( c->op == SLAP_CONFIG_EMIT ) {
            struct berval     bv = BER_BVNULL;

            if ( li == NULL ) {
                  return 1;
            }

            switch( c->type ) {
            case LDAP_BACK_CFG_URI:
                  if ( li->li_uri != NULL ) {
                        struct berval     bv, bv2;

                        ber_str2bv( li->li_uri, 0, 0, &bv );
                        bv2.bv_len = bv.bv_len + STRLENOF( "\"\"" );
                        bv2.bv_val = ch_malloc( bv2.bv_len + 1 );
                        snprintf( bv2.bv_val, bv2.bv_len + 1,
                              "\"%s\"", bv.bv_val );
                        ber_bvarray_add( &c->rvalue_vals, &bv2 );

                  } else {
                        rc = 1;
                  }
                  break;

            case LDAP_BACK_CFG_TLS: {
                  struct berval bc = BER_BVNULL, bv2;
                  enum_to_verb( tls_mode, ( li->li_flags & LDAP_BACK_F_TLS_MASK ), &bv );
                  assert( !BER_BVISNULL( &bv ) );
                  bindconf_tls_unparse( &li->li_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_bvarray_add( &c->rvalue_vals, &bv2 );

                  } else {
                        value_add_one( &c->rvalue_vals, &bv );
                  }
                  ber_memfree( bc.bv_val );
                  }
                  break;

            case LDAP_BACK_CFG_ACL_AUTHCDN:
            case LDAP_BACK_CFG_ACL_PASSWD:
            case LDAP_BACK_CFG_ACL_METHOD:
                  /* handled by LDAP_BACK_CFG_ACL_BIND */
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_ACL_BIND: {
                  int   i;

                  if ( li->li_acl_authmethod == LDAP_AUTH_NONE ) {
                        return 1;
                  }

                  bindconf_unparse( &li->li_acl, &bv );

                  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_IDASSERT_MODE:
            case LDAP_BACK_CFG_IDASSERT_AUTHCDN:
            case LDAP_BACK_CFG_IDASSERT_PASSWD:
            case LDAP_BACK_CFG_IDASSERT_METHOD:
                  /* handled by LDAP_BACK_CFG_IDASSERT_BIND */
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_IDASSERT_AUTHZFROM: {
                  int         i;

                  if ( li->li_idassert_authz == NULL ) {
                        if ( ( li->li_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( &li->li_idassert_authz[ i ] ); i++ )
                  {
                        value_add_one( &c->rvalue_vals, &li->li_idassert_authz[ i ] );
                  }
                  break;
            }

            case LDAP_BACK_CFG_IDASSERT_BIND: {
                  int         i;
                  struct berval     bc = BER_BVNULL;
                  char        *ptr;

                  if ( li->li_idassert_authmethod == LDAP_AUTH_NONE ) {
                        return 1;
                  }

                  if ( li->li_idassert_authmethod != LDAP_AUTH_NONE ) {
                        ber_len_t   len;

                        switch ( li->li_idassert_mode ) {
                        case LDAP_BACK_IDASSERT_OTHERID:
                        case LDAP_BACK_IDASSERT_OTHERDN:
                              break;

                        default: {
                              struct berval     mode = BER_BVNULL;

                              enum_to_verb( idassert_mode, li->li_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 ( li->li_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" );
                        /* 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 ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
                              ptr = lutil_strcopy( ptr, "prescriptive" );
                        } else {
                              ptr = lutil_strcopy( ptr, "non-prescriptive" );
                        }

                        if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
                              ptr = lutil_strcopy( ptr, ",override" );
                        }

                        if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
                              ptr = lutil_strcopy( ptr, ",obsolete-proxy-authz" );

                        } else if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
                              ptr = lutil_strcopy( ptr, ",obsolete-encoding-workaround" );
                        }

                        bv.bv_len = ( ptr - bv.bv_val );
                        /* end-of-flags */
                  }

                  bindconf_unparse( &li->li_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_REBIND:
                  c->value_int = LDAP_BACK_SAVECRED( li );
                  break;

            case LDAP_BACK_CFG_CHASE:
                  c->value_int = LDAP_BACK_CHASE_REFERRALS( li );
                  break;

            case LDAP_BACK_CFG_T_F:
                  enum_to_verb( t_f_mode, (li->li_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_WHOAMI:
                  c->value_int = LDAP_BACK_PROXY_WHOAMI( li );
                  break;

            case LDAP_BACK_CFG_TIMEOUT:
                  BER_BVZERO( &bv );

                  for ( i = 0; i < SLAP_OP_LAST; i++ ) {
                        if ( li->li_timeout[ i ] != 0 ) {
                              break;
                        }
                  }

                  if ( i == SLAP_OP_LAST ) {
                        return 1;
                  }

                  slap_cf_aux_table_unparse( li->li_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_IDLE_TIMEOUT: {
                  char  buf[ SLAP_TEXT_BUFLEN ];

                  if ( li->li_idle_timeout == 0 ) {
                        return 1;
                  }

                  lutil_unparse_time( buf, sizeof( buf ), li->li_idle_timeout );
                  ber_str2bv( buf, 0, 0, &bv );
                  value_add_one( &c->rvalue_vals, &bv );
                  } break;

            case LDAP_BACK_CFG_CONN_TTL: {
                  char  buf[ SLAP_TEXT_BUFLEN ];

                  if ( li->li_conn_ttl == 0 ) {
                        return 1;
                  }

                  lutil_unparse_time( buf, sizeof( buf ), li->li_conn_ttl );
                  ber_str2bv( buf, 0, 0, &bv );
                  value_add_one( &c->rvalue_vals, &bv );
                  } break;

            case LDAP_BACK_CFG_NETWORK_TIMEOUT: {
                  char  buf[ SLAP_TEXT_BUFLEN ];

                  if ( li->li_network_timeout == 0 ) {
                        return 1;
                  }

                  snprintf( buf, sizeof( buf ), "%ld",
                        (long)li->li_network_timeout );
                  ber_str2bv( buf, 0, 0, &bv );
                  value_add_one( &c->rvalue_vals, &bv );
                  } break;

            case LDAP_BACK_CFG_VERSION:
                  if ( li->li_version == 0 ) {
                        return 1;
                  }

                  c->value_int = li->li_version;
                  break;

            case LDAP_BACK_CFG_SINGLECONN:
                  c->value_int = LDAP_BACK_SINGLECONN( li );
                  break;

            case LDAP_BACK_CFG_USETEMP:
                  c->value_int = LDAP_BACK_USE_TEMPORARIES( li );
                  break;

            case LDAP_BACK_CFG_CONNPOOLMAX:
                  c->value_int = li->li_conn_priv_max;
                  break;

            case LDAP_BACK_CFG_CANCEL: {
                  slap_mask_t mask = LDAP_BACK_F_CANCEL_MASK2;

                  if ( LDAP_BACK_CANCEL_DISCOVER( li ) ) {
                        mask &= ~LDAP_BACK_F_CANCEL_EXOP;
                  }
                  enum_to_verb( cancel_mode, (li->li_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_QUARANTINE:
                  if ( !LDAP_BACK_QUARANTINE( li ) ) {
                        rc = 1;
                        break;
                  }

                  rc = slap_retry_info_unparse( &li->li_quarantine, &bv );
                  if ( rc == 0 ) {
                        ber_bvarray_add( &c->rvalue_vals, &bv );
                  }
                  break;

#ifdef SLAP_CONTROL_X_SESSION_TRACKING
            case LDAP_BACK_CFG_ST_REQUEST:
                  c->value_int = LDAP_BACK_ST_REQUEST( li );
                  break;
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */

            default:
                  /* FIXME: we need to handle all... */
                  assert( 0 );
                  break;
            }
            return rc;

      } else if ( c->op == LDAP_MOD_DELETE ) {
            switch( c->type ) {
            case LDAP_BACK_CFG_URI:
                  if ( li->li_uri != NULL ) {
                        ch_free( li->li_uri );
                        li->li_uri = NULL;

                        assert( li->li_bvuri != NULL );
                        ber_bvarray_free( li->li_bvuri );
                        li->li_bvuri = NULL;
                  }

                  /* better cleanup the cached connections... */
                  /* NOTE: don't worry about locking: if we got here,
                   * other threads are suspended. */
                  if ( li->li_conninfo.lai_tree != NULL ) {
                        avl_free( li->li_conninfo.lai_tree, ldap_back_conn_free );
                        li->li_conninfo.lai_tree = NULL;
                  }
                  
                  break;

            case LDAP_BACK_CFG_TLS:
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_ACL_AUTHCDN:
            case LDAP_BACK_CFG_ACL_PASSWD:
            case LDAP_BACK_CFG_ACL_METHOD:
                  /* handled by LDAP_BACK_CFG_ACL_BIND */
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_ACL_BIND:
                  bindconf_free( &li->li_acl );
                  break;

            case LDAP_BACK_CFG_IDASSERT_MODE:
            case LDAP_BACK_CFG_IDASSERT_AUTHCDN:
            case LDAP_BACK_CFG_IDASSERT_PASSWD:
            case LDAP_BACK_CFG_IDASSERT_METHOD:
                  /* handled by LDAP_BACK_CFG_IDASSERT_BIND */
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_IDASSERT_AUTHZFROM:
                  if ( li->li_idassert_authz != NULL ) {
                        ber_bvarray_free( li->li_idassert_authz );
                        li->li_idassert_authz = NULL;
                  }
                  break;

            case LDAP_BACK_CFG_IDASSERT_BIND:
                  bindconf_free( &li->li_idassert.si_bc );
                  break;

            case LDAP_BACK_CFG_REBIND:
            case LDAP_BACK_CFG_CHASE:
            case LDAP_BACK_CFG_T_F:
            case LDAP_BACK_CFG_WHOAMI:
            case LDAP_BACK_CFG_CANCEL:
                  rc = 1;
                  break;

            case LDAP_BACK_CFG_TIMEOUT:
                  for ( i = 0; i < SLAP_OP_LAST; i++ ) {
                        li->li_timeout[ i ] = 0;
                  }
                  break;

            case LDAP_BACK_CFG_IDLE_TIMEOUT:
                  li->li_idle_timeout = 0;
                  break;

            case LDAP_BACK_CFG_CONN_TTL:
                  li->li_conn_ttl = 0;
                  break;

            case LDAP_BACK_CFG_NETWORK_TIMEOUT:
                  li->li_network_timeout = 0;
                  break;

            case LDAP_BACK_CFG_VERSION:
                  li->li_version = 0;
                  break;

            case LDAP_BACK_CFG_SINGLECONN:
                  li->li_flags &= ~LDAP_BACK_F_SINGLECONN;
                  break;

            case LDAP_BACK_CFG_USETEMP:
                  li->li_flags &= ~LDAP_BACK_F_USE_TEMPORARIES;
                  break;

            case LDAP_BACK_CFG_CONNPOOLMAX:
                  li->li_conn_priv_max = LDAP_BACK_CONN_PRIV_MIN;
                  break;

            case LDAP_BACK_CFG_QUARANTINE:
                  if ( !LDAP_BACK_QUARANTINE( li ) ) {
                        break;
                  }

                  slap_retry_info_destroy( &li->li_quarantine );
                  ldap_pvt_thread_mutex_destroy( &li->li_quarantine_mutex );
                  li->li_isquarantined = 0;
                  li->li_flags &= ~LDAP_BACK_F_QUARANTINE;
                  break;

#ifdef SLAP_CONTROL_X_SESSION_TRACKING
            case LDAP_BACK_CFG_ST_REQUEST:
                  li->li_flags &= ~LDAP_BACK_F_ST_REQUEST;
                  break;
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */

            default:
                  /* FIXME: we need to handle all... */
                  assert( 0 );
                  break;
            }
            return rc;

      }

      switch( c->type ) {
      case LDAP_BACK_CFG_URI: {
            LDAPURLDesc *tmpludp, *lud;
            char        **urllist = NULL;
            int         urlrc = LDAP_URL_SUCCESS, i;

            if ( li->li_uri != NULL ) {
                  ch_free( li->li_uri );
                  li->li_uri = NULL;

                  assert( li->li_bvuri != NULL );
                  ber_bvarray_free( li->li_bvuri );
                  li->li_bvuri = NULL;
            }

            /* PARANOID: DN and more are not required nor allowed */
            urlrc = ldap_url_parselist_ext( &lud, c->argv[ 1 ], ", \t", LDAP_PVT_URL_PARSE_NONE );
            if ( urlrc != LDAP_URL_SUCCESS ) {
                  char  *why;

                  switch ( urlrc ) {
                  case LDAP_URL_ERR_MEM:
                        why = "no memory";
                        break;
                  case LDAP_URL_ERR_PARAM:
                        why = "parameter is bad";
                        break;
                  case LDAP_URL_ERR_BADSCHEME:
                        why = "URL doesn't begin with \"[c]ldap[si]://\"";
                        break;
                  case LDAP_URL_ERR_BADENCLOSURE:
                        why = "URL is missing trailing \">\"";
                        break;
                  case LDAP_URL_ERR_BADURL:
                        why = "URL is bad";
                        break;
                  case LDAP_URL_ERR_BADHOST:
                        why = "host/port is bad";
                        break;
                  case LDAP_URL_ERR_BADATTRS:
                        why = "bad (or missing) attributes";
                        break;
                  case LDAP_URL_ERR_BADSCOPE:
                        why = "scope string is invalid (or missing)";
                        break;
                  case LDAP_URL_ERR_BADFILTER:
                        why = "bad or missing filter";
                        break;
                  case LDAP_URL_ERR_BADEXTS:
                        why = "bad or missing extensions";
                        break;
                  default:
                        why = "unknown reason";
                        break;
                  }
                  snprintf( c->cr_msg, sizeof( c->cr_msg),
                              "unable to parse uri \"%s\" "
                              "in \"uri <uri>\" line: %s",
                              c->value_string, why );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  urlrc = 1;
                  goto done_url;
            }

            for ( i = 0, tmpludp = lud;
                        tmpludp;
                        i++, tmpludp = tmpludp->lud_next )
            {
                  if ( ( tmpludp->lud_dn != NULL
                                    && tmpludp->lud_dn[0] != '\0' )
                              || tmpludp->lud_attrs != NULL
                              /* || tmpludp->lud_scope != LDAP_SCOPE_DEFAULT */
                              || tmpludp->lud_filter != NULL
                              || tmpludp->lud_exts != NULL )
                  {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                                    "warning, only protocol, "
                                    "host and port allowed "
                                    "in \"uri <uri>\" statement "
                                    "for uri #%d of \"%s\"",
                                    i, c->argv[ 1 ] );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  }
            }

            for ( i = 0, tmpludp = lud;
                        tmpludp;
                        i++, tmpludp = tmpludp->lud_next )
                  /* just count */
                  ;
            urllist = ch_calloc( sizeof( char * ), i + 1 );

            for ( i = 0, tmpludp = lud;
                        tmpludp;
                        i++, tmpludp = tmpludp->lud_next )
            {
                  LDAPURLDesc tmplud;

                  tmplud = *tmpludp;
                  tmplud.lud_dn = "";
                  tmplud.lud_attrs = NULL;
                  tmplud.lud_filter = NULL;
                  if ( !ldap_is_ldapi_url( tmplud.lud_scheme ) ) {
                        tmplud.lud_exts = NULL;
                        tmplud.lud_crit_exts = 0;
                  }

                  urllist[ i ]  = ldap_url_desc2str( &tmplud );

                  if ( urllist[ i ] == NULL ) {
                        snprintf( c->cr_msg, sizeof( c->cr_msg),
                              "unable to rebuild uri "
                              "in \"uri <uri>\" statement "
                              "for \"%s\"",
                              c->argv[ 1 ] );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        urlrc = 1;
                        goto done_url;
                  }
            }

            li->li_uri = ldap_charray2str( urllist, " " );
            for ( i = 0; urllist[ i ] != NULL; i++ ) {
                  struct berval     bv;

                  ber_str2bv( urllist[ i ], 0, 0, &bv );
                  ber_bvarray_add( &li->li_bvuri, &bv );
                  urllist[ i ] = NULL;
            }
            ldap_memfree( urllist );
            urllist = NULL;

done_url:;
            if ( urllist ) {
                  ldap_charray_free( urllist );
            }
            if ( lud ) {
                  ldap_free_urllist( lud );
            }
            if ( urlrc != LDAP_URL_SUCCESS ) {
                  return 1;
            }
            break;
      }

      case LDAP_BACK_CFG_TLS:
            i = verb_to_mask( c->argv[1], tls_mode );
            if ( BER_BVISNULL( &tls_mode[i].word ) ) {
                  return 1;
            }
            li->li_flags &= ~LDAP_BACK_F_TLS_MASK;
            li->li_flags |= tls_mode[i].mask;
            if ( c->argc > 2 ) {
                  for ( i=2; i<c->argc; i++ ) {
                        if ( bindconf_tls_parse( c->argv[i], &li->li_tls ))
                              return 1;
                  }
                  bindconf_tls_defaults( &li->li_tls );
            }
            break;

      case LDAP_BACK_CFG_ACL_AUTHCDN:
            switch ( li->li_acl_authmethod ) {
            case LDAP_AUTH_NONE:
                  li->li_acl_authmethod = LDAP_AUTH_SIMPLE;
                  break;

            case LDAP_AUTH_SIMPLE:
                  break;

            default:
                  snprintf( c->cr_msg, sizeof( c->cr_msg),
                        "\"acl-authcDN <DN>\" incompatible "
                        "with auth method %d",
                        li->li_acl_authmethod );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }
            if ( !BER_BVISNULL( &li->li_acl_authcDN ) ) {
                  free( li->li_acl_authcDN.bv_val );
            }
            ber_memfree_x( c->value_dn.bv_val, NULL );
            li->li_acl_authcDN = c->value_ndn;
            BER_BVZERO( &c->value_dn );
            BER_BVZERO( &c->value_ndn );
            break;

      case LDAP_BACK_CFG_ACL_PASSWD:
            switch ( li->li_acl_authmethod ) {
            case LDAP_AUTH_NONE:
                  li->li_acl_authmethod = LDAP_AUTH_SIMPLE;
                  break;

            case LDAP_AUTH_SIMPLE:
                  break;

            default:
                  snprintf( c->cr_msg, sizeof( c->cr_msg ),
                        "\"acl-passwd <cred>\" incompatible "
                        "with auth method %d",
                        li->li_acl_authmethod );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }
            if ( !BER_BVISNULL( &li->li_acl_passwd ) ) {
                  free( li->li_acl_passwd.bv_val );
            }
            ber_str2bv( c->argv[ 1 ], 0, 1, &li->li_acl_passwd );
            break;

      case LDAP_BACK_CFG_ACL_METHOD:
      case LDAP_BACK_CFG_ACL_BIND:
            for ( i = 1; i < c->argc; i++ ) {
                  if ( bindconf_parse( c->argv[ i ], &li->li_acl ) ) {
                        return 1;
                  }
            }
            bindconf_tls_defaults( &li->li_acl );
            break;

      case LDAP_BACK_CFG_IDASSERT_MODE:
            i = verb_to_mask( c->argv[1], idassert_mode );
            if ( BER_BVISNULL( &idassert_mode[i].word ) ) {
                  if ( strncasecmp( c->argv[1], "u:", STRLENOF( "u:" ) ) == 0 ) {
                        li->li_idassert_mode = LDAP_BACK_IDASSERT_OTHERID;
                        ber_str2bv( c->argv[1], 0, 1, &li->li_idassert_authzID );
                        li->li_idassert_authzID.bv_val[ 0 ] = 'u';
                        
                  } else {
                        struct berval     id, ndn;

                        ber_str2bv( c->argv[1], 0, 0, &id );

                        if ( strncasecmp( c->argv[1], "dn:", STRLENOF( "dn:" ) ) == 0 ) {
                              id.bv_val += STRLENOF( "dn:" );
                              id.bv_len -= STRLENOF( "dn:" );
                        }

                        rc = dnNormalize( 0, NULL, NULL, &id, &ndn, NULL );
                                if ( rc != LDAP_SUCCESS ) {
                                        Debug( LDAP_DEBUG_ANY,
                                                "%s: line %d: idassert ID \"%s\" is not a valid DN\n",
                                                c->fname, c->lineno, c->argv[1] );
                                        return 1;
                                }

                                li->li_idassert_authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
                                li->li_idassert_authzID.bv_val = ch_malloc( li->li_idassert_authzID.bv_len + 1 );
                                AC_MEMCPY( li->li_idassert_authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
                                AC_MEMCPY( &li->li_idassert_authzID.bv_val[ STRLENOF( "dn:" ) ], ndn.bv_val, ndn.bv_len + 1 );
                                ch_free( ndn.bv_val );

                                li->li_idassert_mode = LDAP_BACK_IDASSERT_OTHERDN;
                  }

            } else {
                  li->li_idassert_mode = idassert_mode[i].mask;
            }

            if ( c->argc > 2 ) {
                  int   i;

                  for ( i = 2; i < c->argc; i++ ) {
                        if ( strcasecmp( c->argv[ i ], "override" ) == 0 ) {
                              li->li_idassert_flags |= LDAP_BACK_AUTH_OVERRIDE;

                        } else if ( strcasecmp( c->argv[ i ], "prescriptive" ) == 0 ) {
                              li->li_idassert_flags |= LDAP_BACK_AUTH_PRESCRIPTIVE;

                        } else if ( strcasecmp( c->argv[ i ], "non-prescriptive" ) == 0 ) {
                              li->li_idassert_flags &= ( ~LDAP_BACK_AUTH_PRESCRIPTIVE );

                        } else if ( strcasecmp( c->argv[ i ], "obsolete-proxy-authz" ) == 0 ) {
                              if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
                                    Debug( LDAP_DEBUG_ANY,
                                                      "%s: line %d: \"obsolete-proxy-authz\" flag "
                                                "in \"idassert-mode <args>\" "
                                                "incompatible with previously issued \"obsolete-encoding-workaround\" flag.\n",
                                                c->fname, c->lineno, 0 );
                                          return 1;
                              }
                              li->li_idassert_flags |= LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ;

                        } else if ( strcasecmp( c->argv[ i ], "obsolete-encoding-workaround" ) == 0 ) {
                              if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
                                    Debug( LDAP_DEBUG_ANY,
                                                      "%s: line %d: \"obsolete-encoding-workaround\" flag "
                                                "in \"idassert-mode <args>\" "
                                                "incompatible with previously issued \"obsolete-proxy-authz\" flag.\n",
                                                c->fname, c->lineno, 0 );
                                          return 1;
                              }
                              li->li_idassert_flags |= LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND;

                        } else {
                              Debug( LDAP_DEBUG_ANY,
                                          "%s: line %d: unknown flag #%d "
                                          "in \"idassert-mode <args> "
                                          "[<flags>]\" line.\n",
                                          c->fname, c->lineno, i - 2 );
                                    return 1;
                        }
                        }
                }
            break;

      case LDAP_BACK_CFG_IDASSERT_AUTHCDN:
            switch ( li->li_idassert_authmethod ) {
            case LDAP_AUTH_NONE:
                  li->li_idassert_authmethod = LDAP_AUTH_SIMPLE;
                  break;

            case LDAP_AUTH_SIMPLE:
                  break;

            default:
                  snprintf( c->cr_msg, sizeof( c->cr_msg ),
                        "\"idassert-authcDN <DN>\" incompatible "
                        "with auth method %d",
                        li->li_idassert_authmethod );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }
            if ( !BER_BVISNULL( &li->li_idassert_authcDN ) ) {
                  free( li->li_idassert_authcDN.bv_val );
            }
            ber_memfree_x( c->value_dn.bv_val, NULL );
            li->li_idassert_authcDN = c->value_ndn;
            BER_BVZERO( &c->value_dn );
            BER_BVZERO( &c->value_ndn );
            break;

      case LDAP_BACK_CFG_IDASSERT_PASSWD:
            switch ( li->li_idassert_authmethod ) {
            case LDAP_AUTH_NONE:
                  li->li_idassert_authmethod = LDAP_AUTH_SIMPLE;
                  break;

            case LDAP_AUTH_SIMPLE:
                  break;

            default:
                  snprintf( c->cr_msg, sizeof( c->cr_msg ),
                        "\"idassert-passwd <cred>\" incompatible "
                        "with auth method %d",
                        li->li_idassert_authmethod );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }
            if ( !BER_BVISNULL( &li->li_idassert_passwd ) ) {
                  free( li->li_idassert_passwd.bv_val );
            }
            ber_str2bv( c->argv[ 1 ], 0, 1, &li->li_idassert_passwd );
            break;

      case LDAP_BACK_CFG_IDASSERT_AUTHZFROM:
            rc = slap_idassert_authzfrom_parse( c, &li->li_idassert );
            break;

      case LDAP_BACK_CFG_IDASSERT_METHOD:
            /* no longer supported */
            snprintf( c->cr_msg, sizeof( c->cr_msg ),
                  "\"idassert-method <args>\": "
                  "no longer supported; use \"idassert-bind\"" );
            Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
            return 1;

      case LDAP_BACK_CFG_IDASSERT_BIND:
            rc = slap_idassert_parse( c, &li->li_idassert );
            break;

      case LDAP_BACK_CFG_REBIND:
            if ( c->argc == 1 || c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_SAVECRED;

            } else {
                  li->li_flags &= ~LDAP_BACK_F_SAVECRED;
            }
            break;

      case LDAP_BACK_CFG_CHASE:
            if ( c->argc == 1 || c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_CHASE_REFERRALS;

            } else {
                  li->li_flags &= ~LDAP_BACK_F_CHASE_REFERRALS;
            }
            break;

      case LDAP_BACK_CFG_T_F: {
            slap_mask_t       mask;

            i = verb_to_mask( c->argv[1], t_f_mode );
            if ( BER_BVISNULL( &t_f_mode[i].word ) ) {
                  return 1;
            }

            mask = t_f_mode[i].mask;

            if ( LDAP_BACK_ISOPEN( li )
                  && mask == LDAP_BACK_F_T_F_DISCOVER
                  && !LDAP_BACK_T_F( li ) )
            {
                  slap_bindconf     sb = { BER_BVNULL };
                  int         rc;

                  if ( li->li_uri == NULL ) {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                              "need URI to discover absolute filters support "
                              "in \"t-f-support discover\"" );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        return 1;
                  }

                  ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
                  sb.sb_version = li->li_version;
                  sb.sb_method = LDAP_AUTH_SIMPLE;
                  BER_BVSTR( &sb.sb_binddn, "" );

                  rc = slap_discover_feature( &sb,
                              slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
                              LDAP_FEATURE_ABSOLUTE_FILTERS );
                  if ( rc == LDAP_COMPARE_TRUE ) {
                        mask |= LDAP_BACK_F_T_F;
                  }
            }

            li->li_flags &= ~LDAP_BACK_F_T_F_MASK2;
            li->li_flags |= mask;
            } break;

      case LDAP_BACK_CFG_WHOAMI:
            if ( c->argc == 1 || c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_PROXY_WHOAMI;
                  load_extop( (struct berval *)&slap_EXOP_WHOAMI,
                              0, ldap_back_exop_whoami );

            } else {
                  li->li_flags &= ~LDAP_BACK_F_PROXY_WHOAMI;
            }
            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++ ) {
                              li->li_timeout[ j ] = u;
                        }

                        continue;
                  }

                  if ( slap_cf_aux_table_parse( c->argv[ i ], li->li_timeout, timeout_table, "slapd-ldap 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_IDLE_TIMEOUT: {
            unsigned long     t;

            if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
                  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;
            }
            li->li_idle_timeout = (time_t)t;
            } break;

      case LDAP_BACK_CFG_CONN_TTL: {
            unsigned long     t;

            if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
                  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;
            }
            li->li_conn_ttl = (time_t)t;
            } break;

      case LDAP_BACK_CFG_NETWORK_TIMEOUT: {
            unsigned long     t;

            if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
                  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;
            }
            li->li_network_timeout = (time_t)t;
            } 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 version \"%s\" "
                        "in \"protocol-version <version>\"",
                        c->argv[ 1 ] );
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                  return 1;
            }

            li->li_version = c->value_int;
            break;

      case LDAP_BACK_CFG_SINGLECONN:
            if ( c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_SINGLECONN;

            } else {
                  li->li_flags &= ~LDAP_BACK_F_SINGLECONN;
            }
            break;

      case LDAP_BACK_CFG_USETEMP:
            if ( c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_USE_TEMPORARIES;

            } else {
                  li->li_flags &= ~LDAP_BACK_F_USE_TEMPORARIES;
            }
            break;

      case LDAP_BACK_CFG_CONNPOOLMAX:
            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;
            }
            li->li_conn_priv_max = c->value_int;
            break;

      case LDAP_BACK_CFG_CANCEL: {
            slap_mask_t       mask;

            i = verb_to_mask( c->argv[1], cancel_mode );
            if ( BER_BVISNULL( &cancel_mode[i].word ) ) {
                  return 1;
            }

            mask = cancel_mode[i].mask;

            if ( LDAP_BACK_ISOPEN( li )
                  && mask == LDAP_BACK_F_CANCEL_EXOP_DISCOVER
                  && !LDAP_BACK_CANCEL( li ) )
            {
                  slap_bindconf     sb = { BER_BVNULL };
                  int         rc;

                  if ( li->li_uri == NULL ) {
                        snprintf( c->cr_msg, sizeof( c->cr_msg ),
                              "need URI to discover \"cancel\" support "
                              "in \"cancel exop-discover\"" );
                        Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
                        return 1;
                  }

                  ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
                  sb.sb_version = li->li_version;
                  sb.sb_method = LDAP_AUTH_SIMPLE;
                  BER_BVSTR( &sb.sb_binddn, "" );

                  rc = slap_discover_feature( &sb,
                              slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
                              LDAP_EXOP_CANCEL );
                  if ( rc == LDAP_COMPARE_TRUE ) {
                        mask |= LDAP_BACK_F_CANCEL_EXOP;
                  }
            }

            li->li_flags &= ~LDAP_BACK_F_CANCEL_MASK2;
            li->li_flags |= mask;
            } break;

      case LDAP_BACK_CFG_QUARANTINE:
            if ( LDAP_BACK_QUARANTINE( li ) ) {
                  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;
            }
            rc = slap_retry_info_parse( c->argv[1], &li->li_quarantine,
                  c->cr_msg, sizeof( c->cr_msg ) );
            if ( rc ) {
                  Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );

            } else {
                  ldap_pvt_thread_mutex_init( &li->li_quarantine_mutex );
                  /* give it a chance to retry if the pattern gets reset
                   * via back-config */
                  li->li_isquarantined = 0;
                  li->li_flags |= LDAP_BACK_F_QUARANTINE;
            }
            break;

#ifdef SLAP_CONTROL_X_SESSION_TRACKING
      case LDAP_BACK_CFG_ST_REQUEST:
            if ( c->value_int ) {
                  li->li_flags |= LDAP_BACK_F_ST_REQUEST;

            } else {
                  li->li_flags &= ~LDAP_BACK_F_ST_REQUEST;
            }
            break;
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */

      case LDAP_BACK_CFG_REWRITE:
            snprintf( c->cr_msg, sizeof( c->cr_msg ),
                  "rewrite/remap capabilities have been moved "
                  "to the \"rwm\" overlay; see slapo-rwm(5) "
                  "for details (hint: add \"overlay rwm\" "
                  "and prefix all directives with \"rwm-\")" );
            Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
            return 1;
            
      default:
            /* FIXME: try to catch inconsistencies */
            assert( 0 );
            break;
      }

      return rc;
}

int
ldap_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 = ldapocs;

      rc = config_register_schema( ldapcfg, ldapocs );
      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_exop_whoami(
            Operation   *op,
            SlapReply   *rs )
{
      struct berval *bv = NULL;

      if ( op->oq_extended.rs_reqdata != NULL ) {
            /* no request data should be provided */
            rs->sr_text = "no request data expected";
            return rs->sr_err = LDAP_PROTOCOL_ERROR;
      }

      Statslog( LDAP_DEBUG_STATS, "%s WHOAMI\n",
          op->o_log_prefix, 0, 0, 0, 0 );

      rs->sr_err = backend_check_restrictions( op, rs, 
                  (struct berval *)&slap_EXOP_WHOAMI );
      if( rs->sr_err != LDAP_SUCCESS ) return rs->sr_err;

      /* if auth'd by back-ldap and request is proxied, forward it */
      if ( op->o_conn->c_authz_backend
            && !strcmp( op->o_conn->c_authz_backend->be_type, "ldap" )
            && !dn_match( &op->o_ndn, &op->o_conn->c_ndn ) )
      {
            ldapconn_t  *lc = NULL;
            LDAPControl c, *ctrls[2] = {NULL, NULL};
            LDAPMessage *res;
            Operation op2 = *op;
            ber_int_t msgid;
            int doretry = 1;
            char *ptr;

            ctrls[0] = &c;
            op2.o_ndn = op->o_conn->c_ndn;
            if ( !ldap_back_dobind( &lc, &op2, rs, LDAP_BACK_SENDERR ) ) {
                  return -1;
            }
            c.ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
            c.ldctl_iscritical = 1;
            c.ldctl_value.bv_val = op->o_tmpalloc(
                  op->o_ndn.bv_len + STRLENOF( "dn:" ) + 1,
                  op->o_tmpmemctx );
            c.ldctl_value.bv_len = op->o_ndn.bv_len + 3;
            ptr = c.ldctl_value.bv_val;
            ptr = lutil_strcopy( ptr, "dn:" );
            ptr = lutil_strncopy( ptr, op->o_ndn.bv_val, op->o_ndn.bv_len );
            ptr[ 0 ] = '\0';

retry:
            rs->sr_err = ldap_whoami( lc->lc_ld, ctrls, NULL, &msgid );
            if ( rs->sr_err == LDAP_SUCCESS ) {
                  if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, NULL, &res ) == -1 ) {
                        ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
                              &rs->sr_err );
                        if ( rs->sr_err == LDAP_SERVER_DOWN && doretry ) {
                              doretry = 0;
                              if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
                                    goto retry;
                              }
                        }

                  } else {
                        /* NOTE: are we sure "bv" will be malloc'ed
                         * with the appropriate memory? */
                        rs->sr_err = ldap_parse_whoami( lc->lc_ld, res, &bv );
                        ldap_msgfree(res);
                  }
            }
            op->o_tmpfree( c.ldctl_value.bv_val, op->o_tmpmemctx );
            if ( rs->sr_err != LDAP_SUCCESS ) {
                  rs->sr_err = slap_map_api2result( rs );
            }

            if ( lc != NULL ) {
                  ldap_back_release_conn( (ldapinfo_t *)op2.o_bd->be_private, lc );
            }

      } else {
            /* else just do the same as before */
            bv = (struct berval *) ch_malloc( sizeof( struct berval ) );
            if ( !BER_BVISEMPTY( &op->o_dn ) ) {
                  bv->bv_len = op->o_dn.bv_len + STRLENOF( "dn:" );
                  bv->bv_val = ch_malloc( bv->bv_len + 1 );
                  AC_MEMCPY( bv->bv_val, "dn:", STRLENOF( "dn:" ) );
                  AC_MEMCPY( &bv->bv_val[ STRLENOF( "dn:" ) ], op->o_dn.bv_val,
                        op->o_dn.bv_len );
                  bv->bv_val[ bv->bv_len ] = '\0';

            } else {
                  bv->bv_len = 0;
                  bv->bv_val = NULL;
            }
      }

      rs->sr_rspdata = bv;
      return rs->sr_err;
}



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