git.sur5r.net Git - openldap/blob - servers/slapd/back-relay/init.c

   1 /* init.c - initialize relay backend */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2004-2017 The OpenLDAP Foundation.
   6  * Portions Copyright 2004 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Pierangelo Masarati for inclusion
  19  * in OpenLDAP Software.
  20  */
  21
  22 #include "portable.h"
  23
  24 #include <stdio.h>
  25 #include <ac/string.h>
  26
  27 #include "slap.h"
  28 #include "config.h"
  29 #include "back-relay.h"
  30
  31 static ConfigDriver relay_back_cf;
  32
  33 static ConfigTable relaycfg[] = {
  34         { "relay", "relay", 2, 2, 0,
  35                 ARG_MAGIC|ARG_DN|ARG_QUOTE,
  36                 relay_back_cf, "( OLcfgDbAt:5.1 "
  37                         "NAME 'olcRelay' "
  38                         "DESC 'Relay DN' "
  39                         "SYNTAX OMsDN "
  40                         "SINGLE-VALUE )",
  41                 NULL, NULL },
  42         { NULL }
  43 };
  44
  45 static ConfigOCs relayocs[] = {
  46         { "( OLcfgDbOc:5.1 "
  47                 "NAME 'olcRelayConfig' "
  48                 "DESC 'Relay backend configuration' "
  49                 "SUP olcDatabaseConfig "
  50                 "MAY ( olcRelay "
  51                 ") )",
  52                         Cft_Database, relaycfg},
  53         { NULL, 0, NULL }
  54 };
  55
  56 static int
  57 relay_back_cf( ConfigArgs *c )
  58 {
  59         relay_back_info *ri = ( relay_back_info * )c->be->be_private;
  60         int             rc = 0;
  61
  62         if ( c->op == SLAP_CONFIG_EMIT ) {
  63                 if ( ri != NULL && !BER_BVISNULL( &ri->ri_realsuffix ) ) {
  64                         value_add_one( &c->rvalue_vals, &ri->ri_realsuffix );
  65                         return 0;
  66                 }
  67                 return 1;
  68
  69         } else if ( c->op == LDAP_MOD_DELETE ) {
  70                 if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
  71                         ch_free( ri->ri_realsuffix.bv_val );
  72                         BER_BVZERO( &ri->ri_realsuffix );
  73                         ri->ri_bd = NULL;
  74                         return 0;
  75                 }
  76                 return 1;
  77
  78         } else {
  79                 BackendDB *bd;
  80
  81                 assert( ri != NULL );
  82                 assert( BER_BVISNULL( &ri->ri_realsuffix ) );
  83
  84                 if ( c->be->be_nsuffix == NULL ) {
  85                         snprintf( c->cr_msg, sizeof( c->cr_msg),
  86                                 "\"relay\" directive "
  87                                 "must appear after \"suffix\"" );
  88                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
  89                                 "%s: %s.\n", c->log, c->cr_msg );
  90                         rc = 1;
  91                         goto relay_done;
  92                 }
  93
  94                 if ( !BER_BVISNULL( &c->be->be_nsuffix[ 1 ] ) ) {
  95                         snprintf( c->cr_msg, sizeof( c->cr_msg),
  96                                 "relaying of multiple suffix "
  97                                 "database not supported" );
  98                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
  99                                 "%s: %s.\n", c->log, c->cr_msg );
 100                         rc = 1;
 101                         goto relay_done;
 102                 }
 103
 104                 bd = select_backend( &c->value_ndn, 1 );
 105                 if ( bd == NULL ) {
 106                         snprintf( c->cr_msg, sizeof( c->cr_msg),
 107                                 "cannot find database "
 108                                 "of relay dn \"%s\" "
 109                                 "in \"olcRelay <dn>\"\n",
 110                                 c->value_dn.bv_val );
 111                         Log2( LDAP_DEBUG_CONFIG, LDAP_LEVEL_ERR,
 112                                 "%s: %s.\n", c->log, c->cr_msg );
 113
 114                 } else if ( bd->be_private == c->be->be_private ) {
 115                         snprintf( c->cr_msg, sizeof( c->cr_msg),
 116                                 "relay dn \"%s\" would call self "
 117                                 "in \"relay <dn>\" line\n",
 118                                 c->value_dn.bv_val );
 119                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
 120                                 "%s: %s.\n", c->log, c->cr_msg );
 121                         rc = 1;
 122                         goto relay_done;
 123                 }
 124
 125                 ri->ri_realsuffix = c->value_ndn;
 126                 BER_BVZERO( &c->value_ndn );
 127
 128 relay_done:;
 129                 ch_free( c->value_dn.bv_val );
 130                 ch_free( c->value_ndn.bv_val );
 131         }
 132
 133         return rc;
 134 }
 135
 136 int
 137 relay_back_initialize( BackendInfo *bi )
 138 {
 139         bi->bi_init = 0;
 140         bi->bi_open = 0;
 141         bi->bi_config = 0;
 142         bi->bi_close = 0;
 143         bi->bi_destroy = 0;
 144
 145         bi->bi_db_init = relay_back_db_init;
 146         bi->bi_db_config = config_generic_wrapper;
 147         bi->bi_db_open = relay_back_db_open;
 148 #if 0
 149         bi->bi_db_close = relay_back_db_close;
 150 #endif
 151         bi->bi_db_destroy = relay_back_db_destroy;
 152
 153         bi->bi_op_bind = relay_back_op_bind;
 154         bi->bi_op_search = relay_back_op_search;
 155         bi->bi_op_compare = relay_back_op_compare;
 156         bi->bi_op_modify = relay_back_op_modify;
 157         bi->bi_op_modrdn = relay_back_op_modrdn;
 158         bi->bi_op_add = relay_back_op_add;
 159         bi->bi_op_delete = relay_back_op_delete;
 160         bi->bi_extended = relay_back_op_extended;
 161         bi->bi_entry_release_rw = relay_back_entry_release_rw;
 162         bi->bi_entry_get_rw = relay_back_entry_get_rw;
 163         bi->bi_operational = relay_back_operational;
 164         bi->bi_has_subordinates = relay_back_has_subordinates;
 165
 166         bi->bi_cf_ocs = relayocs;
 167
 168         return config_register_schema( relaycfg, relayocs );
 169 }
 170
 171 int
 172 relay_back_db_init( Backend *be, ConfigReply *cr)
 173 {
 174         relay_back_info         *ri;
 175
 176         be->be_private = NULL;
 177
 178         ri = (relay_back_info *) ch_calloc( 1, RELAY_INFO_SIZE );
 179         if ( ri == NULL ) {
 180                 return -1;
 181         }
 182
 183         ri->ri_bd = NULL;
 184         BER_BVZERO( &ri->ri_realsuffix );
 185         ri->ri_massage = 0;
 186
 187         be->be_cf_ocs = be->bd_info->bi_cf_ocs;
 188
 189         be->be_private = (void *)ri;
 190
 191         return 0;
 192 }
 193
 194 int
 195 relay_back_db_open( Backend *be, ConfigReply *cr )
 196 {
 197         relay_back_info         *ri = (relay_back_info *)be->be_private;
 198
 199         assert( ri != NULL );
 200
 201         if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
 202                 ri->ri_bd = select_backend( &ri->ri_realsuffix, 1 );
 203
 204                 /* must be there: it was during config! */
 205                 if ( ri->ri_bd == NULL ) {
 206                         snprintf( cr->msg, sizeof( cr->msg),
 207                                 "cannot find database "
 208                                 "of relay dn \"%s\" "
 209                                 "in \"olcRelay <dn>\"\n",
 210                                 ri->ri_realsuffix.bv_val );
 211                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
 212                                 "relay_back_db_open: %s.\n", cr->msg );
 213
 214                         return 1;
 215                 }
 216
 217                 /* inherit controls */
 218                 AC_MEMCPY( be->bd_self->be_ctrls, ri->ri_bd->be_ctrls, sizeof( be->be_ctrls ) );
 219
 220         } else {
 221                 /* inherit all? */
 222                 AC_MEMCPY( be->bd_self->be_ctrls, frontendDB->be_ctrls, sizeof( be->be_ctrls ) );
 223         }
 224
 225         return 0;
 226 }
 227
 228 int
 229 relay_back_db_close( Backend *be, ConfigReply *cr )
 230 {
 231         return 0;
 232 }
 233
 234 int
 235 relay_back_db_destroy( Backend *be, ConfigReply *cr)
 236 {
 237         relay_back_info         *ri = (relay_back_info *)be->be_private;
 238
 239         if ( ri ) {
 240                 if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
 241                         ch_free( ri->ri_realsuffix.bv_val );
 242                 }
 243                 ch_free( ri );
 244         }
 245
 246         return 0;
 247 }
 248
 249 #if SLAPD_RELAY == SLAPD_MOD_DYNAMIC
 250
 251 /* conditionally define the init_module() function */
 252 SLAP_BACKEND_INIT_MODULE( relay )
 253
 254 #endif /* SLAPD_RELAY == SLAPD_MOD_DYNAMIC */