external/bsd/openldap/dist/servers/slapd/frontend.c

   1 /* frontend.c - routines for dealing with frontend */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/frontend.c,v 1.19.2.6 2008/04/24 08:13:39 hyc Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 #include "ldap_rq.h"
  41
  42 static BackendInfo      slap_frontendInfo;
  43 static BackendDB        slap_frontendDB;
  44 BackendDB       *frontendDB;
  45
  46 static int
  47 fe_entry_get_rw(
  48         Operation *op,
  49         struct berval *ndn,
  50         ObjectClass *oc,
  51         AttributeDescription *at,
  52         int rw,
  53         Entry **e )
  54 {
  55         BackendDB       *bd;
  56         int             rc = LDAP_NO_SUCH_OBJECT;
  57
  58         bd = op->o_bd;
  59         op->o_bd = select_backend( ndn, 0 );
  60         if ( op->o_bd != NULL ) {
  61                 if ( op->o_bd->be_fetch ) {
  62                         rc = op->o_bd->be_fetch( op, ndn, oc, at, rw, e );
  63                 }
  64         }
  65         op->o_bd = bd;
  66
  67         return rc;
  68 }
  69
  70 static int
  71 fe_entry_release_rw(
  72         Operation *op,
  73         Entry *e,
  74         int rw )
  75 {
  76         BackendDB       *bd;
  77         int             rc = LDAP_NO_SUCH_OBJECT;
  78
  79         bd = op->o_bd;
  80         op->o_bd = select_backend( &e->e_nname, 0 );
  81         if ( op->o_bd != NULL ) {
  82                 if ( op->o_bd->be_release ) {
  83                         rc = op->o_bd->be_release( op, e, rw );
  84                 }
  85         }
  86         op->o_bd = bd;
  87
  88         return rc;
  89 }
  90
  91 int
  92 frontend_init( void )
  93 {
  94         /* data */
  95         frontendDB = &slap_frontendDB;
  96         frontendDB->bd_self = frontendDB;
  97
  98         /* ACLs */
  99         frontendDB->be_dfltaccess = ACL_READ;
 100
 101         /* limits */
 102         frontendDB->be_def_limit.lms_t_soft = SLAPD_DEFAULT_TIMELIMIT;  /* backward compatible limits */
 103         frontendDB->be_def_limit.lms_t_hard = 0;
 104         frontendDB->be_def_limit.lms_s_soft = SLAPD_DEFAULT_SIZELIMIT;  /* backward compatible limits */
 105         frontendDB->be_def_limit.lms_s_hard = 0;
 106         frontendDB->be_def_limit.lms_s_unchecked = -1;                  /* no limit on unchecked size */
 107         frontendDB->be_def_limit.lms_s_pr = 0;                          /* page limit */
 108         frontendDB->be_def_limit.lms_s_pr_hide = 0;                     /* don't hide number of entries left */
 109         frontendDB->be_def_limit.lms_s_pr_total = 0;                    /* number of total entries returned by pagedResults equal to hard limit */
 110
 111 #if 0
 112         /* FIXME: do we need this? */
 113         frontendDB->be_pcl_mutexp = &frontendDB->be_pcl_mutex;
 114         ldap_pvt_thread_mutex_init( frontendDB->be_pcl_mutexp );
 115 #endif
 116
 117         /* suffix */
 118         frontendDB->be_suffix = ch_calloc( 2, sizeof( struct berval ) );
 119         ber_str2bv( "", 0, 1, &frontendDB->be_suffix[0] );
 120         BER_BVZERO( &frontendDB->be_suffix[1] );
 121         frontendDB->be_nsuffix = ch_calloc( 2, sizeof( struct berval ) );
 122         ber_str2bv( "", 0, 1, &frontendDB->be_nsuffix[0] );
 123         BER_BVZERO( &frontendDB->be_nsuffix[1] );
 124
 125         /* info */
 126         frontendDB->bd_info = &slap_frontendInfo;
 127
 128         SLAP_BFLAGS(frontendDB) |= SLAP_BFLAG_FRONTEND;
 129
 130         /* name */
 131         frontendDB->bd_info->bi_type = "frontend";
 132
 133         /* known controls */
 134         if ( slap_known_controls ) {
 135                 int     i;
 136
 137                 frontendDB->bd_info->bi_controls = slap_known_controls;
 138
 139                 for ( i = 0; slap_known_controls[ i ]; i++ ) {
 140                         int     cid;
 141
 142                         if ( slap_find_control_id( slap_known_controls[ i ], &cid )
 143                                         == LDAP_CONTROL_NOT_FOUND )
 144                         {
 145                                 assert( 0 );
 146                                 return -1;
 147                         }
 148
 149                         frontendDB->bd_info->bi_ctrls[ cid ] = 1;
 150                         frontendDB->be_ctrls[ cid ] = 1;
 151                 }
 152         }
 153
 154         /* calls */
 155         frontendDB->bd_info->bi_op_abandon = fe_op_abandon;
 156         frontendDB->bd_info->bi_op_add = fe_op_add;
 157         frontendDB->bd_info->bi_op_bind = fe_op_bind;
 158         frontendDB->bd_info->bi_op_compare = fe_op_compare;
 159         frontendDB->bd_info->bi_op_delete = fe_op_delete;
 160         frontendDB->bd_info->bi_op_modify = fe_op_modify;
 161         frontendDB->bd_info->bi_op_modrdn = fe_op_modrdn;
 162         frontendDB->bd_info->bi_op_search = fe_op_search;
 163         frontendDB->bd_info->bi_extended = fe_extended;
 164         frontendDB->bd_info->bi_operational = fe_aux_operational;
 165         frontendDB->bd_info->bi_entry_get_rw = fe_entry_get_rw;
 166         frontendDB->bd_info->bi_entry_release_rw = fe_entry_release_rw;
 167         frontendDB->bd_info->bi_access_allowed = fe_access_allowed;
 168         frontendDB->bd_info->bi_acl_group = fe_acl_group;
 169         frontendDB->bd_info->bi_acl_attribute = fe_acl_attribute;
 170
 171 #if 0
 172         /* FIXME: is this too early? */
 173         return backend_startup_one( frontendDB );
 174 #endif
 175
 176         return 0;
 177 }
 178