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config.c

/* $OpenLDAP: pkg/ldap/servers/slapd/back-meta/config.c,v 1.74.2.11 2008/05/22 16:32:56 quanah Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1999-2008 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 "lutil.h"
#include "../back-ldap/back-ldap.h"
#undef ldap_debug       /* silence a warning in ldap-int.h */
#include "../../../libraries/libldap/ldap-int.h"
#include "back-meta.h"

static int
meta_back_new_target( 
      metatarget_t      **mtp )
{
      char              *rargv[ 3 ];
      metatarget_t            *mt;

      *mtp = NULL;

      mt = ch_calloc( sizeof( metatarget_t ), 1 );

      mt->mt_rwmap.rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
      if ( mt->mt_rwmap.rwm_rw == NULL ) {
            ch_free( mt );
            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( mt->mt_rwmap.rwm_rw, "<suffix massage>", 1, 2, rargv );

      rargv[ 0 ] = "rewriteContext";
      rargv[ 1 ] = "default";
      rargv[ 2 ] = NULL;
      rewrite_parse( mt->mt_rwmap.rwm_rw, "<suffix massage>", 1, 2, rargv );

      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;
}

static int
check_true_false( char *str )
{
      if ( strcasecmp( str, "true" ) == 0 || strcasecmp( str, "yes" ) == 0 ) {
            return 1;
      }

      if ( strcasecmp( str, "false" ) == 0 || strcasecmp( str, "no" ) == 0 ) {
            return 0;
      }

      return -1;
}


int
meta_back_db_config(
            BackendDB   *be,
            const char  *fname,
            int         lineno,
            int         argc,
            char        **argv
)
{
      metainfo_t  *mi = ( metainfo_t * )be->be_private;

      assert( mi != NULL );

      /* URI of server to query */
      if ( strcasecmp( argv[ 0 ], "uri" ) == 0 ) {
            int         i = mi->mi_ntargets;
            LDAPURLDesc       *ludp;
            struct berval     dn;
            int         rc;
            int         c;

            metatarget_t      *mt;

            char        **uris = NULL;
            
            if ( argc == 1 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing URI "
      "in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( be->be_nsuffix == NULL ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: the suffix must be defined before any target.\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            ++mi->mi_ntargets;

            mi->mi_targets = ( metatarget_t ** )ch_realloc( mi->mi_targets, 
                  sizeof( metatarget_t * ) * mi->mi_ntargets );
            if ( mi->mi_targets == NULL ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: out of memory while storing server name"
      " in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( meta_back_new_target( &mi->mi_targets[ i ] ) != 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to init server"
      " in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                        fname, lineno, 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;

            mt->mt_nretries = mi->mi_nretries;
            mt->mt_quarantine = mi->mi_quarantine;
            if ( META_BACK_QUARANTINE( mi ) ) {
                  ldap_pvt_thread_mutex_init( &mt->mt_quarantine_mutex );
            }
            mt->mt_flags = mi->mi_flags;
            mt->mt_version = mi->mi_version;
            mt->mt_network_timeout = mi->mi_network_timeout;
            mt->mt_bind_timeout = mi->mi_bind_timeout;
            for ( c = 0; c < SLAP_OP_LAST; c++ ) {
                  mt->mt_timeout[ c ] = mi->mi_timeout[ c ];
            }

            for ( c = 1; c < argc; c++ ) {
                  char  **tmpuris = ldap_str2charray( argv[ c ], "\t" );

                  if ( tmpuris == NULL ) {
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse URIs #%d"
      " in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                        fname, lineno, c - 1 );
                        return 1;
                  }

                  if ( c == 0 ) {
                        uris = tmpuris;

                  } else {
                        ldap_charray_merge( &uris, tmpuris );
                        ldap_charray_free( tmpuris );
                  }
            }

            for ( c = 0; uris[ c ] != NULL; c++ ) {
                  char *tmpuri = NULL;

                  /*
                   * uri MUST be legal!
                   */
                  if ( ldap_url_parselist_ext( &ludp, uris[ c ], "\t",
                              LDAP_PVT_URL_PARSE_NONE ) != LDAP_SUCCESS
                        || ludp->lud_next != NULL )
                  {
                        Debug( LDAP_DEBUG_ANY,
            "%s: line %d: unable to parse URI #%d"
            " in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                              fname, lineno, c );
                        ldap_charray_free( uris );
                        return 1;
                  }

                  if ( c == 0 ) {

                        /*
                         * uri MUST have the <dn> part!
                         */
                        if ( ludp->lud_dn == NULL ) {
                              Debug( LDAP_DEBUG_ANY,
                  "%s: line %d: missing <naming context> "
                  " in \"uri <protocol>://<server>[:port]/<naming context>\" line\n",
                                    fname, lineno, 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 ) {
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                    "target \"%s\" DN is invalid\n",
                                    fname, lineno, argv[ 1 ] );
                              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:
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                    "invalid scope for target \"%s\"\n",
                                    fname, lineno, argv[ 1 ] );
                              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' ) {
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                    "multiple URIs must have "
                                    "no DN part\n",
                                    fname, lineno, 0 );
                              ldap_free_urllist( ludp );
                              ldap_charray_free( uris );
                              return( 1 );

                        }
                  }

                  tmpuri = ldap_url_list2urls( ludp );
                  ldap_free_urllist( ludp );
                  if ( tmpuri == NULL ) {
                        Debug( LDAP_DEBUG_ANY, "%s: line %d: no memory?\n",
                              fname, lineno, 0 );
                        ldap_charray_free( uris );
                        return( 1 );
                  }
                  ldap_memfree( uris[ c ] );
                  uris[ c ] = tmpuri;
            }

            mt->mt_uri = ldap_charray2str( uris, " " );
            ldap_charray_free( uris );
            if ( mt->mt_uri == NULL) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: no memory?\n",
                        fname, lineno, 0 );
                  return( 1 );
            }
            
            /*
             * uri MUST be a branch of suffix!
             */
            for ( c = 0; !BER_BVISNULL( &be->be_nsuffix[ c ] ); c++ ) {
                  if ( dnIsSuffix( &mt->mt_nsuffix, &be->be_nsuffix[ c ] ) ) {
                        break;
                  }
            }

            if ( BER_BVISNULL( &be->be_nsuffix[ c ] ) ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: <naming context> of URI must be within the naming context of this database.\n",
                        fname, lineno, 0 );
                  return 1;
            }

      /* subtree-exclude */
      } else if ( strcasecmp( argv[ 0 ], "subtree-exclude" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;
            struct berval     dn, ndn;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            switch ( argc ) {
            case 1:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing DN in \"subtree-exclude <DN>\" line\n",
                      fname, lineno, 0 );
                  return 1;

            case 2:
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: too many args in \"subtree-exclude <DN>\" line\n",
                      fname, lineno, 0 );
                  return 1;
            }

            ber_str2bv( argv[ 1 ], 0, 0, &dn );
            if ( dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL )
                  != LDAP_SUCCESS )
            {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                              "subtree-exclude DN=\"%s\" is invalid\n",
                              fname, lineno, argv[ 1 ] );
                  return( 1 );
            }

            if ( !dnIsSuffix( &ndn, &mi->mi_targets[ i ]->mt_nsuffix ) ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                              "subtree-exclude DN=\"%s\" "
                              "must be subtree of target\n",
                              fname, lineno, argv[ 1 ] );
                  ber_memfree( ndn.bv_val );
                  return( 1 );
            }

            if ( mi->mi_targets[ i ]->mt_subtree_exclude != NULL ) {
                  int         j;

                  for ( j = 0; !BER_BVISNULL( &mi->mi_targets[ i ]->mt_subtree_exclude[ j ] ); j++ )
                  {
                        if ( dnIsSuffix( &mi->mi_targets[ i ]->mt_subtree_exclude[ j ], &ndn ) ) {
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                          "subtree-exclude DN=\"%s\" "
                                          "is suffix of another subtree-exclude\n",
                                          fname, lineno, argv[ 1 ] );
                              /* reject, because it might be superior
                               * to more than one subtree-exclude */
                              ber_memfree( ndn.bv_val );
                              return( 1 );

                        } else if ( dnIsSuffix( &ndn, &mi->mi_targets[ i ]->mt_subtree_exclude[ j ] ) ) {
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                          "another subtree-exclude is suffix of "
                                          "subtree-exclude DN=\"%s\"\n",
                                          fname, lineno, argv[ 1 ] );
                              ber_memfree( ndn.bv_val );
                              return( 0 );
                        }
                  }
            }

            ber_bvarray_add( &mi->mi_targets[ i ]->mt_subtree_exclude, &ndn );

      /* default target directive */
      } else if ( strcasecmp( argv[ 0 ], "default-target" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;
            
            if ( argc == 1 ) {
                  if ( i < 0 ) {
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"default-target\" alone need be"
            " inside a \"uri\" directive\n",
                              fname, lineno, 0 );
                        return 1;
                  }
                  mi->mi_defaulttarget = i;

            } else {
                  if ( strcasecmp( argv[ 1 ], "none" ) == 0 ) {
                        if ( i >= 0 ) {
                              Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"default-target none\""
            " should go before uri definitions\n",
                                    fname, lineno, 0 );
                        }
                        mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE;

                  } else {
                        
                        if ( lutil_atoi( &mi->mi_defaulttarget, argv[ 1 ] ) != 0
                              || mi->mi_defaulttarget < 0
                              || mi->mi_defaulttarget >= i - 1 )
                        {
                              Debug( LDAP_DEBUG_ANY,
      "%s: line %d: illegal target number %d\n",
                                    fname, lineno, mi->mi_defaulttarget );
                              return 1;
                        }
                  }
            }
            
      /* ttl of dn cache */
      } else if ( strcasecmp( argv[ 0 ], "dncache-ttl" ) == 0 ) {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing ttl in \"dncache-ttl <ttl>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            if ( strcasecmp( argv[ 1 ], "forever" ) == 0 ) {
                  mi->mi_cache.ttl = META_DNCACHE_FOREVER;

            } else if ( strcasecmp( argv[ 1 ], "disabled" ) == 0 ) {
                  mi->mi_cache.ttl = META_DNCACHE_DISABLED;

            } else {
                  unsigned long     t;

                  if ( lutil_parse_time( argv[ 1 ], &t ) != 0 ) {
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse ttl \"%s\" in \"dncache-ttl <ttl>\" line\n",
                              fname, lineno, argv[ 1 ] );
                        return 1;
                  }
                  mi->mi_cache.ttl = (time_t)t;
            }

      /* network timeout when connecting to ldap servers */
      } else if ( strcasecmp( argv[ 0 ], "network-timeout" ) == 0 ) {
            unsigned long     t;
            time_t            *tp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_network_timeout
                        : &mi->mi_network_timeout;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing network timeout in \"network-timeout <seconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( lutil_parse_time( argv[ 1 ], &t ) ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse timeout \"%s\" in \"network-timeout <seconds>\" line\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;

            }

            *tp = (time_t)t;

      /* idle timeout when connecting to ldap servers */
      } else if ( strcasecmp( argv[ 0 ], "idle-timeout" ) == 0 ) {
            unsigned long     t;

            switch ( argc ) {
            case 1:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing timeout value in \"idle-timeout <seconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            case 2:
                  break;
            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: extra cruft after timeout value in \"idle-timeout <seconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( lutil_parse_time( argv[ 1 ], &t ) ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse timeout \"%s\" in \"idle-timeout <seconds>\" line\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;

            }

            mi->mi_idle_timeout = (time_t)t;

      /* conn ttl */
      } else if ( strcasecmp( argv[ 0 ], "conn-ttl" ) == 0 ) {
            unsigned long     t;

            switch ( argc ) {
            case 1:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing ttl value in \"conn-ttl <seconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            case 2:
                  break;
            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: extra cruft after ttl value in \"conn-ttl <seconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( lutil_parse_time( argv[ 1 ], &t ) ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse ttl \"%s\" in \"conn-ttl <seconds>\" line\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;

            }

            mi->mi_conn_ttl = (time_t)t;

      /* bind timeout when connecting to ldap servers */
      } else if ( strcasecmp( argv[ 0 ], "bind-timeout" ) == 0 ) {
            unsigned long     t;
            struct timeval    *tp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_bind_timeout
                        : &mi->mi_bind_timeout;

            switch ( argc ) {
            case 1:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing timeout value in \"bind-timeout <microseconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            case 2:
                  break;
            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: extra cruft after timeout value in \"bind-timeout <microseconds>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( lutil_atoul( &t, argv[ 1 ] ) != 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse timeout \"%s\" in \"bind-timeout <microseconds>\" line\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;

            }

            tp->tv_sec = t/1000000;
            tp->tv_usec = t%1000000;

      /* name to use for meta_back_group */
      } else if ( strcasecmp( argv[ 0 ], "acl-authcDN" ) == 0
                  || strcasecmp( argv[ 0 ], "binddn" ) == 0 )
      {
            int         i = mi->mi_ntargets - 1;
            struct berval     dn;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing name in \"binddn <name>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( strcasecmp( argv[ 0 ], "binddn" ) == 0 ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                        "\"binddn\" statement is deprecated; "
                        "use \"acl-authcDN\" instead\n",
                        fname, lineno, 0 );
                  /* FIXME: some day we'll need to throw an error */
            }

            ber_str2bv( argv[ 1 ], 0, 0, &dn );
            if ( dnNormalize( 0, NULL, NULL, &dn, &mi->mi_targets[ i ]->mt_binddn,
                  NULL ) != LDAP_SUCCESS )
            {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                              "bind DN '%s' is invalid\n",
                              fname, lineno, argv[ 1 ] );
                  return( 1 );
            }

      /* password to use for meta_back_group */
      } else if ( strcasecmp( argv[ 0 ], "acl-passwd" ) == 0
                  || strcasecmp( argv[ 0 ], "bindpw" ) == 0 )
      {
            int         i = mi->mi_ntargets - 1;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing password in \"bindpw <password>\" line\n",
                      fname, lineno, 0 );
                  return 1;
            }

            if ( strcasecmp( argv[ 0 ], "bindpw" ) == 0 ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                        "\"bindpw\" statement is deprecated; "
                        "use \"acl-passwd\" instead\n",
                        fname, lineno, 0 );
                  /* FIXME: some day we'll need to throw an error */
            }

            ber_str2bv( argv[ 1 ], 0L, 1, &mi->mi_targets[ i ]->mt_bindpw );
            
      /* save bind creds for referral rebinds? */
      } else if ( strcasecmp( argv[ 0 ], "rebind-as-user" ) == 0 ) {
            if ( argc > 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"rebind-as-user {NO|yes}\" takes 1 argument.\n",
                      fname, lineno, 0 );
                  return( 1 );
            }

            if ( argc == 1 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: deprecated use of \"rebind-as-user {FALSE|true}\" with no arguments.\n",
                      fname, lineno, 0 );
                  mi->mi_flags |= LDAP_BACK_F_SAVECRED;

            } else {
                  switch ( check_true_false( argv[ 1 ] ) ) {
                  case 0:
                        mi->mi_flags &= ~LDAP_BACK_F_SAVECRED;
                        break;

                  case 1:
                        mi->mi_flags |= LDAP_BACK_F_SAVECRED;
                        break;

                  default:
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"rebind-as-user {FALSE|true}\" unknown argument \"%s\".\n",
                            fname, lineno, argv[ 1 ] );
                        return 1;
                  }
            }

      } else if ( strcasecmp( argv[ 0 ], "chase-referrals" ) == 0 ) {
            unsigned    *flagsp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags
                        : &mi->mi_flags;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"chase-referrals {TRUE|false}\" needs 1 argument.\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            /* this is the default; we add it because the default might change... */
            switch ( check_true_false( argv[ 1 ] ) ) {
            case 1:
                  *flagsp |= LDAP_BACK_F_CHASE_REFERRALS;
                  break;

            case 0:
                  *flagsp &= ~LDAP_BACK_F_CHASE_REFERRALS;
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
            "%s: line %d: \"chase-referrals {TRUE|false}\": unknown argument \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return( 1 );
            }
      
      } else if ( strcasecmp( argv[ 0 ], "tls" ) == 0 ) {
            unsigned    *flagsp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags
                        : &mi->mi_flags;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
            "%s: line %d: \"tls <what>\" needs 1 argument.\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            /* start */
            if ( strcasecmp( argv[ 1 ], "start" ) == 0 ) {
                  *flagsp |= ( LDAP_BACK_F_USE_TLS | LDAP_BACK_F_TLS_CRITICAL );
      
            /* try start tls */
            } else if ( strcasecmp( argv[ 1 ], "try-start" ) == 0 ) {
                  *flagsp &= ~LDAP_BACK_F_TLS_CRITICAL;
                  *flagsp |= LDAP_BACK_F_USE_TLS;
      
            /* propagate start tls */
            } else if ( strcasecmp( argv[ 1 ], "propagate" ) == 0 ) {
                  *flagsp |= ( LDAP_BACK_F_PROPAGATE_TLS | LDAP_BACK_F_TLS_CRITICAL );
            
            /* try start tls */
            } else if ( strcasecmp( argv[ 1 ], "try-propagate" ) == 0 ) {
                  *flagsp &= ~LDAP_BACK_F_TLS_CRITICAL;
                  *flagsp |= LDAP_BACK_F_PROPAGATE_TLS;

            } else {
                  Debug( LDAP_DEBUG_ANY,
            "%s: line %d: \"tls <what>\": unknown argument \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return( 1 );
            }

      } else if ( strcasecmp( argv[ 0 ], "t-f-support" ) == 0 ) {
            unsigned    *flagsp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags
                        : &mi->mi_flags;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
            "%s: line %d: \"t-f-support {FALSE|true|discover}\" needs 1 argument.\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            switch ( check_true_false( argv[ 1 ] ) ) {
            case 0:
                  *flagsp &= ~LDAP_BACK_F_T_F_MASK2;
                  break;

            case 1:
                  *flagsp |= LDAP_BACK_F_T_F;
                  break;

            default:
                  if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
                        *flagsp |= LDAP_BACK_F_T_F_DISCOVER;

                  } else {
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
                              fname, lineno, argv[ 1 ] );
                        return 1;
                  }
                  break;
            }

      /* onerr? */
      } else if ( strcasecmp( argv[ 0 ], "onerr" ) == 0 ) {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"onerr {CONTINUE|report|stop}\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( strcasecmp( argv[ 1 ], "continue" ) == 0 ) {
                  mi->mi_flags &= ~META_BACK_F_ONERR_MASK;

            } else if ( strcasecmp( argv[ 1 ], "stop" ) == 0 ) {
                  mi->mi_flags |= META_BACK_F_ONERR_STOP;

            } else if ( strcasecmp( argv[ 1 ], "report" ) == 0 ) {
                  mi->mi_flags |= META_BACK_F_ONERR_REPORT;

            } else {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"onerr {CONTINUE|report|stop}\": invalid arg \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      /* bind-defer? */
      } else if ( strcasecmp( argv[ 0 ], "pseudoroot-bind-defer" ) == 0
            || strcasecmp( argv[ 0 ], "root-bind-defer" ) == 0 )
      {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"[pseudo]root-bind-defer {TRUE|false}\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            switch ( check_true_false( argv[ 1 ] ) ) {
            case 0:
                  mi->mi_flags &= ~META_BACK_F_DEFER_ROOTDN_BIND;
                  break;

            case 1:
                  mi->mi_flags |= META_BACK_F_DEFER_ROOTDN_BIND;
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"[pseudo]root-bind-defer {TRUE|false}\": invalid arg \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      /* single-conn? */
      } else if ( strcasecmp( argv[ 0 ], "single-conn" ) == 0 ) {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"single-conn {FALSE|true}\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( mi->mi_ntargets > 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"single-conn\" must appear before target definitions\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            switch ( check_true_false( argv[ 1 ] ) ) {
            case 0:
                  mi->mi_flags &= ~LDAP_BACK_F_SINGLECONN;
                  break;

            case 1:
                  mi->mi_flags |= LDAP_BACK_F_SINGLECONN;
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"single-conn {FALSE|true}\": invalid arg \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      /* use-temporaries? */
      } else if ( strcasecmp( argv[ 0 ], "use-temporary-conn" ) == 0 ) {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"use-temporary-conn {FALSE|true}\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( mi->mi_ntargets > 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"use-temporary-conn\" must appear before target definitions\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            switch ( check_true_false( argv[ 1 ] ) ) {
            case 0:
                  mi->mi_flags &= ~LDAP_BACK_F_USE_TEMPORARIES;
                  break;

            case 1:
                  mi->mi_flags |= LDAP_BACK_F_USE_TEMPORARIES;
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"use-temporary-conn {FALSE|true}\": invalid arg \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      /* privileged connections pool max size ? */
      } else if ( strcasecmp( argv[ 0 ], "conn-pool-max" ) == 0 ) {
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"conn-pool-max <n>\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( mi->mi_ntargets > 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"conn-pool-max\" must appear before target definitions\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( lutil_atoi( &mi->mi_conn_priv_max, argv[1] )
                  || mi->mi_conn_priv_max < LDAP_BACK_CONN_PRIV_MIN
                  || mi->mi_conn_priv_max > LDAP_BACK_CONN_PRIV_MAX )
            {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"conn-pool-max <n>\": invalid arg \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      } else if ( strcasecmp( argv[ 0 ], "cancel" ) == 0 ) {
            unsigned    flag = 0;
            unsigned    *flagsp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags
                        : &mi->mi_flags;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"cancel {abandon|ignore|exop}\" takes 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            if ( strcasecmp( argv[ 1 ], "abandon" ) == 0 ) {
                  flag = LDAP_BACK_F_CANCEL_ABANDON;

            } else if ( strcasecmp( argv[ 1 ], "ignore" ) == 0 ) {
                  flag = LDAP_BACK_F_CANCEL_IGNORE;

            } else if ( strcasecmp( argv[ 1 ], "exop" ) == 0 ) {
                  flag = LDAP_BACK_F_CANCEL_EXOP;

            } else if ( strcasecmp( argv[ 1 ], "exop-discover" ) == 0 ) {
                  flag = LDAP_BACK_F_CANCEL_EXOP_DISCOVER;

            } else {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"cancel {abandon|ignore|exop[-discover]}\": unknown mode \"%s\" \n",
                        fname, lineno, argv[ 1 ] );
                  return( 1 );
            }

            *flagsp &= ~LDAP_BACK_F_CANCEL_MASK2;
            *flagsp |= flag;

      } else if ( strcasecmp( argv[ 0 ], "timeout" ) == 0 ) {
            char  *sep;
            time_t      *tv = mi->mi_ntargets ?
                        mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_timeout
                        : mi->mi_timeout;
            int   c;

            if ( argc < 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"timeout [{add|bind|delete|modify|modrdn}=]<val> [...]\" takes at least 1 argument\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            for ( c = 1; c < argc; c++ ) {
                  time_t            *t = NULL;
                  unsigned long     val;

                  sep = strchr( argv[ c ], '=' );
                  if ( sep != NULL ) {
                        size_t      len = sep - argv[ c ];

                        if ( strncasecmp( argv[ c ], "bind", len ) == 0 ) {
                              t = &tv[ SLAP_OP_BIND ];
                        /* unbind makes little sense */
                        } else if ( strncasecmp( argv[ c ], "add", len ) == 0 ) {
                              t = &tv[ SLAP_OP_ADD ];
                        } else if ( strncasecmp( argv[ c ], "delete", len ) == 0 ) {
                              t = &tv[ SLAP_OP_DELETE ];
                        } else if ( strncasecmp( argv[ c ], "modrdn", len ) == 0 ) {
                              t = &tv[ SLAP_OP_MODRDN ];
                        } else if ( strncasecmp( argv[ c ], "modify", len ) == 0 ) {
                              t = &tv[ SLAP_OP_MODIFY ];
                        } else if ( strncasecmp( argv[ c ], "compare", len ) == 0 ) {
                              t = &tv[ SLAP_OP_COMPARE ];
                        } else if ( strncasecmp( argv[ c ], "search", len ) == 0 ) {
                              t = &tv[ SLAP_OP_SEARCH ];
                        /* abandon makes little sense */
#if 0                   /* not implemented yet */
                        } else if ( strncasecmp( argv[ c ], "extended", len ) == 0 ) {
                              t = &tv[ SLAP_OP_EXTENDED ];
#endif
                        } else {
                              char  buf[ SLAP_TEXT_BUFLEN ];
                              snprintf( buf, sizeof( buf ),
                                    "unknown/unhandled operation \"%s\" for timeout #%d",
                                    argv[ c ], c - 1 );
                              Debug( LDAP_DEBUG_ANY,
                                    "%s: line %d: %s.\n",
                                    fname, lineno, buf );
                              return 1;
                        }
                        sep++;
      
                  } else {
                        sep = argv[ c ];
                  }
      
                  if ( lutil_parse_time( sep, &val ) != 0 ) {
                        Debug( LDAP_DEBUG_ANY,
            "%s: line %d: unable to parse value \"%s\" for timeout.\n",
                              fname, lineno, sep );
                        return 1;
                  }
            
                  if ( t ) {
                        *t = (time_t)val;
      
                  } else {
                        int   i;
      
                        for ( i = 0; i < SLAP_OP_LAST; i++ ) {
                              tv[ i ] = (time_t)val;
                        }
                  }
            }
      
      /* name to use as pseudo-root dn */
      } else if ( strcasecmp( argv[ 0 ], "pseudorootdn" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing name in \"pseudorootdn <name>\" line\n",
                        fname, lineno, 0 );
                  return 1;
            }

            /*
             * 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: line %d: \"pseudorootdn\", \"pseudorootpw\" are no longer supported; "
                  "use \"idassert-bind\" and \"idassert-authzFrom\" instead.\n",
                  fname, lineno, 0 );

            {
                  char  binddn[ SLAP_TEXT_BUFLEN ];
                  char  *cargv[] = {
                        "idassert-bind",
                        "bindmethod=simple",
                        NULL,
                        "mode=none",
                        "flags=non-prescriptive",
                        NULL
                  };
                  int   cargc = 5;
                  int   rc;

                  if ( BER_BVISNULL( &be->be_rootndn ) ) {
                        Debug( LDAP_DEBUG_ANY, "%s: line %d: \"pseudorootpw\": \"rootdn\" must be defined first.\n",
                              fname, lineno, 0 );
                        return 1;
                  }

                  if ( snprintf( binddn, sizeof( binddn ), "binddn=%s", argv[ 1 ] ) >= sizeof( binddn ) ) {
                        Debug( LDAP_DEBUG_ANY, "%s: line %d: \"pseudorootdn\" too long.\n",
                              fname, lineno, 0 );
                        return 1;
                  }
                  cargv[ 2 ] = binddn;

                  rc = slap_idassert_parse_cf( fname, lineno, cargc, cargv, &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert );
                  if ( rc == 0 ) {
                        struct berval     bv;

                        if ( mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert_authz != NULL ) {
                              Debug( LDAP_DEBUG_ANY, "%s: line %d: \"idassert-authzFrom\" already defined (discarded).\n",
                                    fname, lineno, 0 );
                              ber_bvarray_free( mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert_authz );
                              mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert_authz = NULL;
                        }

                        assert( !BER_BVISNULL( &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert_authcDN ) );

                        bv.bv_len = STRLENOF( "dn:" ) + 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:" ) ], be->be_rootndn.bv_val, be->be_rootndn.bv_len + 1 );

                        ber_bvarray_add( &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert_authz, &bv );
                  }

                  return rc;
            }

      /* password to use as pseudo-root */
      } else if ( strcasecmp( argv[ 0 ], "pseudorootpw" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: missing password in \"pseudorootpw <password>\" line\n",
                      fname, lineno, 0 );
                  return 1;
            }

            Debug( LDAP_DEBUG_ANY,
                  "%s: line %d: \"pseudorootdn\", \"pseudorootpw\" are no longer supported; "
                  "use \"idassert-bind\" and \"idassert-authzFrom\" instead.\n",
                  fname, lineno, 0 );

            if ( BER_BVISNULL( &mi->mi_targets[ i ]->mt_idassert_authcDN ) ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: \"pseudorootpw\": \"pseudorootdn\" must be defined first.\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( !BER_BVISNULL( &mi->mi_targets[ i ]->mt_idassert_passwd ) ) {
                  memset( mi->mi_targets[ i ]->mt_idassert_passwd.bv_val, 0,
                        mi->mi_targets[ i ]->mt_idassert_passwd.bv_len );
                  ber_memfree( mi->mi_targets[ i ]->mt_idassert_passwd.bv_val );
            }
            ber_str2bv( argv[ 1 ], 0, 1, &mi->mi_targets[ i ]->mt_idassert_passwd );

      /* idassert-bind */
      } else if ( strcasecmp( argv[ 0 ], "idassert-bind" ) == 0 ) {
            if ( mi->mi_ntargets == 0 ) {
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: \"idassert-bind\" "
                        "must appear inside a target specification.\n",
                        fname, lineno, 0 );
                  return 1;
            }

            return slap_idassert_parse_cf( fname, lineno, argc, argv, &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert );

      /* idassert-authzFrom */
      } else if ( strcasecmp( argv[ 0 ], "idassert-authzFrom" ) == 0 ) {
            if ( mi->mi_ntargets == 0 ) {
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: \"idassert-bind\" "
                        "must appear inside a target specification.\n",
                        fname, lineno, 0 );
                  return 1;
            }

            switch ( argc ) {
            case 2:
                  break;

            case 1:
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: missing <id> in \"idassert-authzFrom <id>\".\n",
                        fname, lineno, 0 );
                  return 1;

            default:
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: extra cruft after <id> in \"idassert-authzFrom <id>\".\n",
                        fname, lineno, 0 );
                  return 1;
            }

            return slap_idassert_authzfrom_parse_cf( fname, lineno, argv[ 1 ], &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_idassert );

      /* quarantine */
      } else if ( strcasecmp( argv[ 0 ], "quarantine" ) == 0 ) {
            char              buf[ SLAP_TEXT_BUFLEN ] = { '\0' };
            slap_retry_info_t *ri = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_quarantine
                        : &mi->mi_quarantine;

            if ( ( mi->mi_ntargets == 0 && META_BACK_QUARANTINE( mi ) )
                  || ( mi->mi_ntargets > 0 && META_BACK_TGT_QUARANTINE( mi->mi_targets[ mi->mi_ntargets - 1 ] ) ) )
            {
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: quarantine already defined.\n",
                        fname, lineno, 0 );
                  return 1;
            }

            switch ( argc ) {
            case 2:
                  break;

            case 1:
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: missing arg in \"quarantine <pattern list>\".\n",
                        fname, lineno, 0 );
                  return 1;

            default:
                  Debug( LDAP_DEBUG_ANY,
                        "%s: line %d: extra cruft after \"quarantine <pattern list>\".\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( ri != &mi->mi_quarantine ) {
                  ri->ri_interval = NULL;
                  ri->ri_num = NULL;
            }

            if ( mi->mi_ntargets > 0 && !META_BACK_QUARANTINE( mi ) ) {
                  ldap_pvt_thread_mutex_init( &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_quarantine_mutex );
            }

            if ( slap_retry_info_parse( argv[ 1 ], ri, buf, sizeof( buf ) ) ) {
                  Debug( LDAP_DEBUG_ANY,
                        "%s line %d: %s.\n",
                        fname, lineno, buf );
                  return 1;
            }

            if ( mi->mi_ntargets == 0 ) {
                  mi->mi_flags |= LDAP_BACK_F_QUARANTINE;

            } else {
                  mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags |= LDAP_BACK_F_QUARANTINE;
            }

#ifdef SLAP_CONTROL_X_SESSION_TRACKING
      /* session tracking request */
      } else if ( strcasecmp( argv[ 0 ], "session-tracking-request" ) == 0 ) {
            unsigned    *flagsp = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_flags
                        : &mi->mi_flags;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: \"session-tracking-request {TRUE|false}\" needs 1 argument.\n",
                        fname, lineno, 0 );
                  return( 1 );
            }

            /* this is the default; we add it because the default might change... */
            switch ( check_true_false( argv[ 1 ] ) ) {
            case 1:
                  *flagsp |= LDAP_BACK_F_ST_REQUEST;
                  break;

            case 0:
                  *flagsp &= ~LDAP_BACK_F_ST_REQUEST;
                  break;

            default:
                  Debug( LDAP_DEBUG_ANY,
            "%s: line %d: \"session-tracking-request {TRUE|false}\": unknown argument \"%s\".\n",
                        fname, lineno, argv[ 1 ] );
                  return( 1 );
            }
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */
      
      /* dn massaging */
      } else if ( strcasecmp( argv[ 0 ], "suffixmassage" ) == 0 ) {
            BackendDB   *tmp_bd;
            int         i = mi->mi_ntargets - 1, c, rc;
            struct berval     dn, nvnc, pvnc, nrnc, prnc;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            /*
             * 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
             */
            if ( argc != 3 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: syntax is \"suffixMassage <suffix> <massaged suffix>\"\n",
                        fname, lineno, 0 );
                  return 1;
            }

            ber_str2bv( argv[ 1 ], 0, 0, &dn );
            if ( dnPrettyNormal( NULL, &dn, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                              "suffix \"%s\" is invalid\n",
                              fname, lineno, argv[ 1 ] );
                  return 1;
            }

            for ( c = 0; !BER_BVISNULL( &be->be_nsuffix[ c ] ); c++ ) {
                  if ( dnIsSuffix( &nvnc, &be->be_nsuffix[ 0 ] ) ) {
                        break;
                  }
            }

            if ( BER_BVISNULL( &be->be_nsuffix[ c ] ) ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
      "<suffix> \"%s\" must be within the database naming context, in "
      "\"suffixMassage <suffix> <massaged suffix>\"\n",
                        fname, lineno, pvnc.bv_val );
                  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 ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                        "massaged suffix \"%s\" is invalid\n",
                        fname, lineno, argv[ 2 ] );
                  free( pvnc.bv_val );
                  free( nvnc.bv_val );
                  return 1;
            }
      
            tmp_bd = select_backend( &nrnc, 0 );
            if ( tmp_bd != NULL && tmp_bd->be_private == be->be_private ) {
                  Debug( LDAP_DEBUG_ANY, 
      "%s: line %d: warning: <massaged suffix> \"%s\" resolves to this database, in "
      "\"suffixMassage <suffix> <massaged suffix>\"\n",
                        fname, lineno, prnc.bv_val );
            }

            /*
             * The suffix massaging is emulated by means of the
             * rewrite capabilities
             */
            rc = suffix_massage_config( mi->mi_targets[ i ]->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;
            
      /* rewrite stuff ... */
      } else if ( strncasecmp( argv[ 0 ], "rewrite", 7 ) == 0 ) {
            int         i = mi->mi_ntargets - 1;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY, "%s: line %d: \"rewrite\" "
                        "statement outside target definition.\n",
                        fname, lineno, 0 );
                  return 1;
            }
            
            return rewrite_parse( mi->mi_targets[ i ]->mt_rwmap.rwm_rw,
                        fname, lineno, argc, argv );

      /* objectclass/attribute mapping */
      } else if ( strcasecmp( argv[ 0 ], "map" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;

            if ( i < 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need \"uri\" directive first\n",
                        fname, lineno, 0 );
                  return 1;
            }

            return ldap_back_map_config( &mi->mi_targets[ i ]->mt_rwmap.rwm_oc, 
                        &mi->mi_targets[ i ]->mt_rwmap.rwm_at,
                        fname, lineno, argc, argv );

      } else if ( strcasecmp( argv[ 0 ], "nretries" ) == 0 ) {
            int         i = mi->mi_ntargets - 1;
            int         nretries = META_RETRY_UNDEFINED;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need value in \"nretries <value>\"\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( strcasecmp( argv[ 1 ], "forever" ) == 0 ) {
                  nretries = META_RETRY_FOREVER;

            } else if ( strcasecmp( argv[ 1 ], "never" ) == 0 ) {
                  nretries = META_RETRY_NEVER;

            } else {
                  if ( lutil_atoi( &nretries, argv[ 1 ] ) != 0 ) {
                        Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse value \"%s\" in \"nretries <value>\"\n",
                              fname, lineno, argv[ 1 ] );
                        return 1;
                  }
            }

            if ( i < 0 ) {
                  mi->mi_nretries = nretries;

            } else {
                  mi->mi_targets[ i ]->mt_nretries = nretries;
            }

      } else if ( strcasecmp( argv[ 0 ], "protocol-version" ) == 0 ) {
            int   *version = mi->mi_ntargets ?
                        &mi->mi_targets[ mi->mi_ntargets - 1 ]->mt_version
                        : &mi->mi_version;

            if ( argc != 2 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: need value in \"protocol-version <version>\"\n",
                        fname, lineno, 0 );
                  return 1;
            }

            if ( lutil_atoi( version, argv[ 1 ] ) != 0 ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unable to parse version \"%s\" in \"protocol-version <version>\"\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

            if ( *version != 0 && ( *version < LDAP_VERSION_MIN || *version > LDAP_VERSION_MAX ) ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: unsupported version \"%s\" in \"protocol-version <version>\"\n",
                        fname, lineno, argv[ 1 ] );
                  return 1;
            }

      /* anything else */
      } else {
            return SLAP_CONF_UNKNOWN;
      }
      return 0;
}

int
ldap_back_map_config(
            struct ldapmap    *oc_map,
            struct ldapmap    *at_map,
            const char  *fname,
            int         lineno,
            int         argc,
            char        **argv )
{
      struct ldapmap          *map;
      struct ldapmapping      *mapping;
      char              *src, *dst;
      int               is_oc = 0;

      if ( argc < 3 || argc > 4 ) {
            Debug( LDAP_DEBUG_ANY,
      "%s: line %d: syntax is \"map {objectclass | attribute} [<local> | *] {<foreign> | *}\"\n",
                  fname, lineno, 0 );
            return 1;
      }

      if ( strcasecmp( argv[ 1 ], "objectclass" ) == 0 ) {
            map = oc_map;
            is_oc = 1;

      } else if ( strcasecmp( argv[ 1 ], "attribute" ) == 0 ) {
            map = at_map;

      } else {
            Debug( LDAP_DEBUG_ANY, "%s: line %d: syntax is "
                  "\"map {objectclass | attribute} [<local> | *] "
                  "{<foreign> | *}\"\n",
                  fname, lineno, 0 );
            return 1;
      }

      if ( strcmp( argv[ 2 ], "*" ) == 0 ) {
            if ( argc < 4 || strcmp( argv[ 3 ], "*" ) == 0 ) {
                  map->drop_missing = ( argc < 4 );
                  goto success_return;
            }
            src = dst = argv[ 3 ];

      } else if ( argc < 4 ) {
            src = "";
            dst = argv[ 2 ];

      } else {
            src = argv[ 2 ];
            dst = ( strcmp( argv[ 3 ], "*" ) == 0 ? src : argv[ 3 ] );
      }

      if ( ( map == at_map )
            && ( strcasecmp( src, "objectclass" ) == 0
                  || strcasecmp( dst, "objectclass" ) == 0 ) )
      {
            Debug( LDAP_DEBUG_ANY,
                  "%s: line %d: objectclass attribute cannot be mapped\n",
                  fname, lineno, 0 );
      }

      mapping = (struct ldapmapping *)ch_calloc( 2,
            sizeof(struct ldapmapping) );
      if ( mapping == NULL ) {
            Debug( LDAP_DEBUG_ANY,
                  "%s: line %d: out of memory\n",
                  fname, lineno, 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,
      "%s: line %d: warning, source objectClass '%s' "
      "should be defined in schema\n",
                              fname, lineno, src );

                        /*
                         * FIXME: this should become an err
                         */
                        goto error_return;
                  }
            }

            if ( oc_bvfind( &mapping[ 0 ].dst ) == NULL ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: warning, destination objectClass '%s' "
      "is not defined in schema\n",
                        fname, lineno, dst );
            }
      } 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,
      "%s: line %d: warning, source attributeType '%s' "
      "should be defined in schema\n",
                              fname, lineno, src );

                        /*
                         * 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 ) {
                              char  buf[ SLAP_TEXT_BUFLEN ];

                              snprintf( buf, sizeof( buf ),
                                    "source attributeType \"%s\": %d (%s)",
                                    src, rc, text ? text : "" );
                              Debug( LDAP_DEBUG_ANY,
                                    "%s: line %d: %s\n",
                                    fname, lineno, buf );
                              goto error_return;
                        }
                  }

                  ad = NULL;
            }

            rc = slap_bv2ad( &mapping[ 0 ].dst, &ad, &text );
            if ( rc != LDAP_SUCCESS ) {
                  Debug( LDAP_DEBUG_ANY,
      "%s: line %d: warning, destination attributeType '%s' "
      "is not defined in schema\n",
                        fname, lineno, dst );

                  /*
                   * 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 ) {
                        char  buf[ SLAP_TEXT_BUFLEN ];

                        snprintf( buf, sizeof( buf ),
                              "source attributeType \"%s\": %d (%s)\n",
                              dst, rc, text ? text : "" );
                        Debug( LDAP_DEBUG_ANY,
                              "%s: line %d: %s\n",
                              fname, lineno, buf );
                        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)
      {
            Debug( LDAP_DEBUG_ANY,
                  "%s: line %d: duplicate mapping found.\n",
                  fname, lineno, 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:;
      if ( !is_oc && map->map == NULL ) {
            /* only init if required */
            ldap_back_map_init( map, &mapping );
      }

      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 */


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