git.sur5r.net Git - openldap/blob - servers/slapd/overlays/translucent.c

   1 /* translucent.c - translucent proxy module */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2004-2008 The OpenLDAP Foundation.
   6  * Portions Copyright 2005 Symas Corporation.
   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 Symas Corp. for inclusion in
  19  * OpenLDAP Software.  This work was sponsored by Hewlett-Packard.
  20  */
  21
  22 #include "portable.h"
  23
  24 #ifdef SLAPD_OVER_TRANSLUCENT
  25
  26 #include <stdio.h>
  27
  28 #include <ac/string.h>
  29 #include <ac/socket.h>
  30
  31 #include "slap.h"
  32 #include "lutil.h"
  33
  34 #include "config.h"
  35
  36 /* config block */
  37 typedef struct translucent_info {
  38         BackendDB db;                   /* captive backend */
  39         AttributeName *local;   /* valid attrs for local filters */
  40         AttributeName *remote;  /* valid attrs for remote filters */
  41         int strict;
  42         int no_glue;
  43         int defer_db_open;
  44 } translucent_info;
  45
  46 static ConfigLDAPadd translucent_ldadd;
  47 static ConfigCfAdd translucent_cfadd;
  48
  49 static ConfigDriver translucent_cf_gen;
  50
  51 enum {
  52         TRANS_LOCAL = 1,
  53         TRANS_REMOTE
  54 };
  55
  56 static ConfigTable translucentcfg[] = {
  57         { "translucent_strict", "on|off", 1, 2, 0,
  58           ARG_ON_OFF|ARG_OFFSET,
  59           (void *)offsetof(translucent_info, strict),
  60           "( OLcfgOvAt:14.1 NAME 'olcTranslucentStrict' "
  61           "DESC 'Reveal attribute deletion constraint violations' "
  62           "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  63         { "translucent_no_glue", "on|off", 1, 2, 0,
  64           ARG_ON_OFF|ARG_OFFSET,
  65           (void *)offsetof(translucent_info, no_glue),
  66           "( OLcfgOvAt:14.2 NAME 'olcTranslucentNoGlue' "
  67           "DESC 'Disable automatic glue records for ADD and MODRDN' "
  68           "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
  69         { "translucent_local", "attr[,attr...]", 1, 2, 0,
  70           ARG_STRING|ARG_MAGIC|TRANS_LOCAL,
  71           translucent_cf_gen,
  72           "( OLcfgOvAt:14.3 NAME 'olcTranslucentLocal' "
  73           "DESC 'Attributes to use in local search filter' "
  74           "SYNTAX OMsDirectoryString )", NULL, NULL },
  75         { "translucent_remote", "attr[,attr...]", 1, 2, 0,
  76           ARG_STRING|ARG_MAGIC|TRANS_REMOTE,
  77           translucent_cf_gen,
  78           "( OLcfgOvAt:14.4 NAME 'olcTranslucentRemote' "
  79           "DESC 'Attributes to use in remote search filter' "
  80           "SYNTAX OMsDirectoryString )", NULL, NULL },
  81         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
  82 };
  83
  84 static ConfigTable transdummy[] = {
  85         { "", "", 0, 0, 0, ARG_IGNORED,
  86                 NULL, "( OLcfgGlAt:13 NAME 'olcDatabase' "
  87                         "DESC 'The backend type for a database instance' "
  88                         "SUP olcBackend SINGLE-VALUE X-ORDERED 'SIBLINGS' )", NULL, NULL },
  89         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
  90 };
  91
  92 static ConfigOCs translucentocs[] = {
  93         { "( OLcfgOvOc:14.1 "
  94           "NAME 'olcTranslucentConfig' "
  95           "DESC 'Translucent configuration' "
  96           "SUP olcOverlayConfig "
  97           "MAY ( olcTranslucentStrict $ olcTranslucentNoGlue $"
  98           " olcTranslucentLocal $ olcTranslucentRemote ) )",
  99           Cft_Overlay, translucentcfg, NULL, translucent_cfadd },
 100         { "( OLcfgOvOc:14.2 "
 101           "NAME 'olcTranslucentDatabase' "
 102           "DESC 'Translucent target database configuration' "
 103           "AUXILIARY )", Cft_Misc, transdummy, translucent_ldadd },
 104         { NULL, 0, NULL }
 105 };
 106 /* for translucent_init() */
 107
 108 static int
 109 translucent_ldadd_cleanup( ConfigArgs *ca )
 110 {
 111         slap_overinst *on = ca->ca_private;
 112         translucent_info *ov = on->on_bi.bi_private;
 113
 114         ov->defer_db_open = 0;
 115         return backend_startup_one( ca->be, &ca->reply );
 116 }
 117
 118 static int
 119 translucent_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
 120 {
 121         slap_overinst *on;
 122         translucent_info *ov;
 123
 124         Debug(LDAP_DEBUG_TRACE, "==> translucent_ldadd\n", 0, 0, 0);
 125
 126         if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
 127              cei->ce_bi->bi_cf_ocs != translucentocs )
 128                 return LDAP_CONSTRAINT_VIOLATION;
 129
 130         on = (slap_overinst *)cei->ce_bi;
 131         ov = on->on_bi.bi_private;
 132         ca->be = &ov->db;
 133         ca->ca_private = on;
 134         if ( CONFIG_ONLINE_ADD( ca ))
 135                 ca->cleanup = translucent_ldadd_cleanup;
 136         else
 137                 ov->defer_db_open = 0;
 138
 139         return LDAP_SUCCESS;
 140 }
 141
 142 static int
 143 translucent_cfadd( Operation *op, SlapReply *rs, Entry *e, ConfigArgs *ca )
 144 {
 145         CfEntryInfo *cei = e->e_private;
 146         slap_overinst *on = (slap_overinst *)cei->ce_bi;
 147         translucent_info *ov = on->on_bi.bi_private;
 148         struct berval bv;
 149
 150         Debug(LDAP_DEBUG_TRACE, "==> translucent_cfadd\n", 0, 0, 0);
 151
 152         /* FIXME: should not hardcode "olcDatabase" here */
 153         bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
 154                 "olcDatabase=%s", ov->db.bd_info->bi_type );
 155         if ( bv.bv_len < 0 || bv.bv_len >= sizeof( ca->cr_msg ) ) {
 156                 return -1;
 157         }
 158         bv.bv_val = ca->cr_msg;
 159         ca->be = &ov->db;
 160         ov->defer_db_open = 0;
 161
 162         /* We can only create this entry if the database is table-driven
 163          */
 164         if ( ov->db.bd_info->bi_cf_ocs )
 165                 config_build_entry( op, rs, cei, ca, &bv,
 166                                     ov->db.bd_info->bi_cf_ocs,
 167                                     &translucentocs[1] );
 168
 169         return 0;
 170 }
 171
 172 static int
 173 translucent_cf_gen( ConfigArgs *c )
 174 {
 175         slap_overinst   *on = (slap_overinst *)c->bi;
 176         translucent_info *ov = on->on_bi.bi_private;
 177         AttributeName **an, *a2;
 178         int i;
 179
 180         if ( c->type == TRANS_LOCAL )
 181                 an = &ov->local;
 182         else
 183                 an = &ov->remote;
 184
 185         if ( c->op == SLAP_CONFIG_EMIT ) {
 186                 if ( !*an )
 187                         return 1;
 188                 for ( i = 0; !BER_BVISNULL(&(*an)[i].an_name); i++ ) {
 189                         value_add_one( &c->rvalue_vals, &(*an)[i].an_name );
 190                 }
 191                 return ( i < 1 );
 192         } else if ( c->op == LDAP_MOD_DELETE ) {
 193                 if ( c->valx < 0 ) {
 194                         anlist_free( *an, 1, NULL );
 195                         *an = NULL;
 196                 } else {
 197                         i = c->valx;
 198                         ch_free( (*an)[i].an_name.bv_val );
 199                         do {
 200                                 (*an)[i] = (*an)[i+1];
 201                         } while ( !BER_BVISNULL( &(*an)[i].an_name ));
 202                 }
 203                 return 0;
 204         }
 205         a2 = str2anlist( *an, c->argv[1], "," );
 206         if ( !a2 ) {
 207                 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse attribute %s",
 208                         c->argv[0], c->argv[1] );
 209                 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
 210                         "%s: %s\n", c->log, c->cr_msg, 0 );
 211                 return ARG_BAD_CONF;
 212         }
 213         *an = a2;
 214         return 0;
 215 }
 216
 217 static slap_overinst translucent;
 218
 219 /*
 220 ** glue_parent()
 221 **      call syncrepl_add_glue() with the parent suffix;
 222 **
 223 */
 224
 225 static struct berval glue[] = { BER_BVC("top"), BER_BVC("glue"), BER_BVNULL };
 226
 227 void glue_parent(Operation *op) {
 228         Operation nop = *op;
 229         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 230         struct berval ndn = BER_BVNULL;
 231         Attribute *a;
 232         Entry *e;
 233         struct berval   pdn;
 234
 235         dnParent( &op->o_req_ndn, &pdn );
 236         ber_dupbv_x( &ndn, &pdn, op->o_tmpmemctx );
 237
 238         Debug(LDAP_DEBUG_TRACE, "=> glue_parent: fabricating glue for <%s>\n", ndn.bv_val, 0, 0);
 239
 240         e = entry_alloc();
 241         e->e_id = NOID;
 242         ber_dupbv(&e->e_name, &ndn);
 243         ber_dupbv(&e->e_nname, &ndn);
 244
 245         a = attr_alloc( slap_schema.si_ad_objectClass );
 246         a->a_numvals = 2;
 247         a->a_vals = ch_malloc(sizeof(struct berval) * 3);
 248         ber_dupbv(&a->a_vals[0], &glue[0]);
 249         ber_dupbv(&a->a_vals[1], &glue[1]);
 250         ber_dupbv(&a->a_vals[2], &glue[2]);
 251         a->a_nvals = a->a_vals;
 252         a->a_next = e->e_attrs;
 253         e->e_attrs = a;
 254
 255         a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
 256         a->a_numvals = 1;
 257         a->a_vals = ch_malloc(sizeof(struct berval) * 2);
 258         ber_dupbv(&a->a_vals[0], &glue[1]);
 259         ber_dupbv(&a->a_vals[1], &glue[2]);
 260         a->a_nvals = a->a_vals;
 261         a->a_next = e->e_attrs;
 262         e->e_attrs = a;
 263
 264         nop.o_req_dn = ndn;
 265         nop.o_req_ndn = ndn;
 266         nop.ora_e = e;
 267
 268         nop.o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
 269         syncrepl_add_glue(&nop, e);
 270         nop.o_bd->bd_info = (BackendInfo *) on;
 271
 272         op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
 273
 274         return;
 275 }
 276
 277 /*
 278 ** dup_bervarray()
 279 **      copy a BerVarray;
 280 */
 281
 282 BerVarray dup_bervarray(BerVarray b) {
 283         int i, len;
 284         BerVarray nb;
 285         for(len = 0; b[len].bv_val; len++);
 286         nb = ch_malloc((len+1) * sizeof(BerValue));
 287         for(i = 0; i < len; i++) ber_dupbv(&nb[i], &b[i]);
 288         nb[len].bv_val = NULL;
 289         nb[len].bv_len = 0;
 290         return(nb);
 291 }
 292
 293 /*
 294 ** free_attr_chain()
 295 **      free only the Attribute*, not the contents;
 296 **
 297 */
 298 void free_attr_chain(Attribute *b) {
 299         Attribute *a;
 300         for(a=b; a; a=a->a_next) {
 301                 a->a_vals = NULL;
 302                 a->a_nvals = NULL;
 303         }
 304         attrs_free( b );
 305         return;
 306 }
 307
 308 /*
 309 ** translucent_add()
 310 **      if not bound as root, send ACCESS error;
 311 **      if glue, glue_parent();
 312 **      return CONTINUE;
 313 **
 314 */
 315
 316 static int translucent_add(Operation *op, SlapReply *rs) {
 317         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 318         translucent_info *ov = on->on_bi.bi_private;
 319         Debug(LDAP_DEBUG_TRACE, "==> translucent_add: %s\n",
 320                 op->o_req_dn.bv_val, 0, 0);
 321         if(!be_isroot(op)) {
 322                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 323                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 324                         "user modification of overlay database not permitted");
 325                 op->o_bd->bd_info = (BackendInfo *) on;
 326                 return(rs->sr_err);
 327         }
 328         if(!ov->no_glue) glue_parent(op);
 329         return(SLAP_CB_CONTINUE);
 330 }
 331
 332 /*
 333 ** translucent_modrdn()
 334 **      if not bound as root, send ACCESS error;
 335 **      if !glue, glue_parent();
 336 **      else return CONTINUE;
 337 **
 338 */
 339
 340 static int translucent_modrdn(Operation *op, SlapReply *rs) {
 341         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 342         translucent_info *ov = on->on_bi.bi_private;
 343         Debug(LDAP_DEBUG_TRACE, "==> translucent_modrdn: %s -> %s\n",
 344                 op->o_req_dn.bv_val, op->orr_newrdn.bv_val, 0);
 345         if(!be_isroot(op)) {
 346                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 347                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 348                         "user modification of overlay database not permitted");
 349                 op->o_bd->bd_info = (BackendInfo *) on;
 350                 return(rs->sr_err);
 351         }
 352         if(!ov->no_glue) {
 353                 op->o_tag = LDAP_REQ_ADD;
 354                 glue_parent(op);
 355                 op->o_tag = LDAP_REQ_MODRDN;
 356         }
 357         return(SLAP_CB_CONTINUE);
 358 }
 359
 360 /*
 361 ** translucent_delete()
 362 **      if not bound as root, send ACCESS error;
 363 **      else return CONTINUE;
 364 **
 365 */
 366
 367 static int translucent_delete(Operation *op, SlapReply *rs) {
 368         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 369         Debug(LDAP_DEBUG_TRACE, "==> translucent_delete: %s\n",
 370                 op->o_req_dn.bv_val, 0, 0);
 371         if(!be_isroot(op)) {
 372                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 373                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 374                         "user modification of overlay database not permitted");
 375                 op->o_bd->bd_info = (BackendInfo *) on;
 376                 return(rs->sr_err);
 377         }
 378         return(SLAP_CB_CONTINUE);
 379 }
 380
 381 static int
 382 translucent_tag_cb( Operation *op, SlapReply *rs )
 383 {
 384         op->o_tag = LDAP_REQ_MODIFY;
 385         op->orm_modlist = op->o_callback->sc_private;
 386         rs->sr_tag = slap_req2res( op->o_tag );
 387
 388         return SLAP_CB_CONTINUE;
 389 }
 390
 391 /*
 392 ** translucent_modify()
 393 **      modify in local backend if exists in both;
 394 **      otherwise, add to local backend;
 395 **      fail if not defined in captive backend;
 396 **
 397 */
 398
 399 static int translucent_modify(Operation *op, SlapReply *rs) {
 400         SlapReply nrs = { REP_RESULT };
 401
 402         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 403         translucent_info *ov = on->on_bi.bi_private;
 404         Entry *e = NULL, *re = NULL;
 405         Attribute *a, *ax;
 406         Modifications *m, **mm;
 407         BackendDB *db;
 408         int del, rc, erc = 0;
 409         slap_callback cb = { 0 };
 410
 411         Debug(LDAP_DEBUG_TRACE, "==> translucent_modify: %s\n",
 412                 op->o_req_dn.bv_val, 0, 0);
 413
 414         if(ov->defer_db_open) {
 415                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 416                         "remote DB not available");
 417                 return(rs->sr_err);
 418         }
 419 /*
 420 ** fetch entry from the captive backend;
 421 ** if it did not exist, fail;
 422 ** release it, if captive backend supports this;
 423 **
 424 */
 425
 426         db = op->o_bd;
 427         op->o_bd = &ov->db;
 428         rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
 429         if(rc != LDAP_SUCCESS || re == NULL ) {
 430                 send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
 431                         "attempt to modify nonexistent local record");
 432                 return(rs->sr_err);
 433         }
 434         op->o_bd = db;
 435 /*
 436 ** fetch entry from local backend;
 437 ** if it exists:
 438 **      foreach Modification:
 439 **          if attr not present in local:
 440 **              if Mod == LDAP_MOD_DELETE:
 441 **                  if remote attr not present, return NO_SUCH;
 442 **                  if remote attr present, drop this Mod;
 443 **              else force this Mod to LDAP_MOD_ADD;
 444 **      return CONTINUE;
 445 **
 446 */
 447
 448         op->o_bd->bd_info = (BackendInfo *) on->on_info;
 449         rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
 450         op->o_bd->bd_info = (BackendInfo *) on;
 451
 452         if(e && rc == LDAP_SUCCESS) {
 453                 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: found local entry\n", 0, 0, 0);
 454                 for(mm = &op->orm_modlist; *mm; ) {
 455                         m = *mm;
 456                         for(a = e->e_attrs; a; a = a->a_next)
 457                                 if(a->a_desc == m->sml_desc) break;
 458                         if(a) {
 459                                 mm = &m->sml_next;
 460                                 continue;               /* found local attr */
 461                         }
 462                         if(m->sml_op == LDAP_MOD_DELETE) {
 463                                 for(a = re->e_attrs; a; a = a->a_next)
 464                                         if(a->a_desc == m->sml_desc) break;
 465                                 /* not found remote attr */
 466                                 if(!a) {
 467                                         erc = LDAP_NO_SUCH_ATTRIBUTE;
 468                                         goto release;
 469                                 }
 470                                 if(ov->strict) {
 471                                         erc = LDAP_CONSTRAINT_VIOLATION;
 472                                         goto release;
 473                                 }
 474                                 Debug(LDAP_DEBUG_TRACE,
 475                                         "=> translucent_modify: silently dropping delete: %s\n",
 476                                         m->sml_desc->ad_cname.bv_val, 0, 0);
 477                                 *mm = m->sml_next;
 478                                 m->sml_next = NULL;
 479                                 slap_mods_free(m, 1);
 480                                 continue;
 481                         }
 482                         m->sml_op = LDAP_MOD_ADD;
 483                         mm = &m->sml_next;
 484                 }
 485                 erc = SLAP_CB_CONTINUE;
 486 release:
 487                 if(re) {
 488                         if(ov->db.bd_info->bi_entry_release_rw) {
 489                                 op->o_bd = &ov->db;
 490                                 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
 491                                 op->o_bd = db;
 492                         } else
 493                                 entry_free(re);
 494                 }
 495                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 496                 be_entry_release_r(op, e);
 497                 op->o_bd->bd_info = (BackendInfo *) on;
 498                 if(erc == SLAP_CB_CONTINUE) {
 499                         return(erc);
 500                 } else if(erc) {
 501                         send_ldap_error(op, rs, erc,
 502                                 "attempt to delete nonexistent attribute");
 503                         return(erc);
 504                 }
 505         }
 506
 507         /* don't leak remote entry copy */
 508         if(re) {
 509                 if(ov->db.bd_info->bi_entry_release_rw) {
 510                         op->o_bd = &ov->db;
 511                         ov->db.bd_info->bi_entry_release_rw(op, re, 0);
 512                         op->o_bd = db;
 513                 } else
 514                         entry_free(re);
 515         }
 516 /*
 517 ** foreach Modification:
 518 **      if MOD_ADD or MOD_REPLACE, add Attribute;
 519 ** if no Modifications were suitable:
 520 **      if strict, throw CONSTRAINT_VIOLATION;
 521 **      else, return early SUCCESS;
 522 ** fabricate Entry with new Attribute chain;
 523 ** glue_parent() for this Entry;
 524 ** call bi_op_add() in local backend;
 525 **
 526 */
 527
 528         Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: fabricating local add\n", 0, 0, 0);
 529         a = NULL;
 530         for(del = 0, ax = NULL, m = op->orm_modlist; m; m = m->sml_next) {
 531                 Attribute atmp;
 532                 if(((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_ADD) &&
 533                    ((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)) {
 534                         Debug(LDAP_DEBUG_ANY,
 535                                 "=> translucent_modify: silently dropped modification(%d): %s\n",
 536                                 m->sml_op, m->sml_desc->ad_cname.bv_val, 0);
 537                         if((m->sml_op & LDAP_MOD_OP) == LDAP_MOD_DELETE) del++;
 538                         continue;
 539                 }
 540                 atmp.a_desc = m->sml_desc;
 541                 atmp.a_vals = m->sml_values;
 542                 atmp.a_nvals = m->sml_nvalues ? m->sml_nvalues : atmp.a_vals;
 543                 atmp.a_numvals = m->sml_numvals;
 544                 atmp.a_flags = 0;
 545                 a = attr_dup( &atmp );
 546                 a->a_next  = ax;
 547                 ax = a;
 548         }
 549
 550         if(del && ov->strict) {
 551                 attrs_free( a );
 552                 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
 553                         "attempt to delete attributes from local database");
 554                 return(rs->sr_err);
 555         }
 556
 557         if(!ax) {
 558                 if(ov->strict) {
 559                         send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
 560                                 "modification contained other than ADD or REPLACE");
 561                         return(rs->sr_err);
 562                 }
 563                 /* rs->sr_text = "no valid modification found"; */
 564                 rs->sr_err = LDAP_SUCCESS;
 565                 send_ldap_result(op, rs);
 566                 return(rs->sr_err);
 567         }
 568
 569         e = entry_alloc();
 570         ber_dupbv( &e->e_name, &op->o_req_dn );
 571         ber_dupbv( &e->e_nname, &op->o_req_ndn );
 572         e->e_attrs = a;
 573
 574         op->o_tag       = LDAP_REQ_ADD;
 575         cb.sc_response = translucent_tag_cb;
 576         cb.sc_private = op->orm_modlist;
 577         op->oq_add.rs_e = e;
 578
 579         glue_parent(op);
 580
 581         cb.sc_next = op->o_callback;
 582         op->o_callback = &cb;
 583         rc = on->on_info->oi_orig->bi_op_add(op, &nrs);
 584         if ( op->ora_e == e )
 585                 entry_free( e );
 586         op->o_callback = cb.sc_next;
 587
 588         return(rc);
 589 }
 590
 591 static int translucent_compare(Operation *op, SlapReply *rs) {
 592         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 593         translucent_info *ov = on->on_bi.bi_private;
 594         AttributeAssertion *ava = op->orc_ava;
 595         Entry *e;
 596         BackendDB *db;
 597         int rc;
 598
 599         Debug(LDAP_DEBUG_TRACE, "==> translucent_compare: <%s> %s:%s\n",
 600                 op->o_req_dn.bv_val, ava->aa_desc->ad_cname.bv_val, ava->aa_value.bv_val);
 601
 602 /*
 603 ** if the local backend has an entry for this attribute:
 604 **      CONTINUE and let it do the compare;
 605 **
 606 */
 607         rc = overlay_entry_get_ov(op, &op->o_req_ndn, NULL, ava->aa_desc, 0, &e, on);
 608         if(rc == LDAP_SUCCESS && e) {
 609                 overlay_entry_release_ov(op, e, 0, on);
 610                 return(SLAP_CB_CONTINUE);
 611         }
 612
 613         if(ov->defer_db_open) {
 614                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 615                         "remote DB not available");
 616                 return(rs->sr_err);
 617         }
 618 /*
 619 ** call compare() in the captive backend;
 620 ** return the result;
 621 **
 622 */
 623         db = op->o_bd;
 624         op->o_bd = &ov->db;
 625         rc = ov->db.bd_info->bi_op_compare(op, rs);
 626         op->o_bd = db;
 627
 628         return(rc);
 629 }
 630
 631 /*
 632 ** translucent_search_cb()
 633 **      merge local data with remote data
 634 **
 635 ** Four cases:
 636 ** 1: remote search, no local filter
 637 **      merge data and send immediately
 638 ** 2: remote search, with local filter
 639 **      merge data and save
 640 ** 3: local search, no remote filter
 641 **      merge data and send immediately
 642 ** 4: local search, with remote filter
 643 **      check list, merge, send, delete
 644 */
 645
 646 #define RMT_SIDE        0
 647 #define LCL_SIDE        1
 648 #define USE_LIST        2
 649
 650 typedef struct trans_ctx {
 651         BackendDB *db;
 652         slap_overinst *on;
 653         Filter *orig;
 654         Avlnode *list;
 655         int step;
 656 } trans_ctx;
 657
 658 static int translucent_search_cb(Operation *op, SlapReply *rs) {
 659         trans_ctx *tc;
 660         BackendDB *db;
 661         slap_overinst *on;
 662         translucent_info *ov;
 663         Entry *le, *re;
 664         Attribute *a, *ax, *an, *as = NULL;
 665         int rc;
 666
 667         tc = op->o_callback->sc_private;
 668
 669         /* Don't let the op complete while we're gathering data */
 670         if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
 671                 return 0;
 672
 673         if(!op || !rs || rs->sr_type != REP_SEARCH || !rs->sr_entry)
 674                 return(SLAP_CB_CONTINUE);
 675
 676         Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
 677                 rs->sr_entry->e_name.bv_val, 0, 0);
 678
 679         on = tc->on;
 680         ov = on->on_bi.bi_private;
 681
 682         db = op->o_bd;
 683         re = NULL;
 684
 685         /* If we have local, get remote */
 686         if ( tc->step & LCL_SIDE ) {
 687                 le = rs->sr_entry;
 688                 /* If entry is already on list, use it */
 689                 if ( tc->step & USE_LIST ) {
 690                         re = tavl_delete( &tc->list, le, entry_dn_cmp );
 691                         if ( re ) {
 692                                 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 693                                         rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 694                                         be_entry_release_r( op, rs->sr_entry );
 695                                 }
 696                                 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 697                                         rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 698                                         entry_free( rs->sr_entry );
 699                                 }
 700                                 rc = test_filter( op, re, tc->orig );
 701                                 if ( rc == LDAP_COMPARE_TRUE ) {
 702                                         rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
 703                                         rs->sr_entry = re;
 704                                         return SLAP_CB_CONTINUE;
 705                                 } else {
 706                                         entry_free( re );
 707                                         rs->sr_entry = NULL;
 708                                         return 0;
 709                                 }
 710                         }
 711                 }
 712                 op->o_bd = &ov->db;
 713                 rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
 714                 if ( rc == LDAP_SUCCESS && re ) {
 715                         Entry *tmp = entry_dup( re );
 716                         be_entry_release_r( op, re );
 717                         re = tmp;
 718                 }
 719         } else {
 720         /* Else we have remote, get local */
 721                 op->o_bd = tc->db;
 722                 rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
 723                 if ( rc == LDAP_SUCCESS && le ) {
 724                         re = entry_dup( rs->sr_entry );
 725                         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 726                                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 727                                 be_entry_release_r( op, rs->sr_entry );
 728                         }
 729                         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 730                                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 731                                 entry_free( rs->sr_entry );
 732                         }
 733                 } else {
 734                         le = NULL;
 735                 }
 736         }
 737
 738 /*
 739 ** if we got remote and local entry:
 740 **      foreach local attr:
 741 **              foreach remote attr:
 742 **                      if match, remote attr with local attr;
 743 **                      if new local, add to list;
 744 **      append new local attrs to remote;
 745 **
 746 */
 747
 748         if ( re && le ) {
 749                 for(ax = le->e_attrs; ax; ax = ax->a_next) {
 750                         for(a = re->e_attrs; a; a = a->a_next) {
 751                                 if(a->a_desc == ax->a_desc) {
 752                                         if(a->a_vals != a->a_nvals)
 753                                                 ber_bvarray_free(a->a_nvals);
 754                                         ber_bvarray_free(a->a_vals);
 755                                         a->a_vals = dup_bervarray(ax->a_vals);
 756                                         a->a_nvals = (ax->a_vals == ax->a_nvals) ?
 757                                                 a->a_vals : dup_bervarray(ax->a_nvals);
 758                                         break;
 759                                 }
 760                         }
 761                         if(a) continue;
 762                         an = attr_dup(ax);
 763                         an->a_next = as;
 764                         as = an;
 765                 }
 766                 /* Dispose of local entry */
 767                 if ( tc->step & LCL_SIDE ) {
 768                         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 769                                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 770                                 be_entry_release_r( op, rs->sr_entry );
 771                         }
 772                         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 773                                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 774                                 entry_free( rs->sr_entry );
 775                         }
 776                 } else {
 777                         overlay_entry_release_ov(op, le, 0, on);
 778                 }
 779
 780                 /* literally append, so locals are always last */
 781                 if(as) {
 782                         if(re->e_attrs) {
 783                                 for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
 784                                 ax->a_next = as;
 785                         } else {
 786                                 re->e_attrs = as;
 787                         }
 788                 }
 789                 /* If both filters, save entry for later */
 790                 if ( tc->step == (USE_LIST|RMT_SIDE) ) {
 791                         tavl_insert( &tc->list, re, entry_dn_cmp, avl_dup_error );
 792                         rs->sr_entry = NULL;
 793                         rc = 0;
 794                 } else {
 795                 /* send it now */
 796                         rs->sr_entry = re;
 797                         rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
 798                         rc = SLAP_CB_CONTINUE;
 799                 }
 800         } else if ( le ) {
 801         /* Only a local entry: remote was deleted
 802          * Ought to delete the local too...
 803          */
 804                 rc = 0;
 805         } else if ( tc->step & USE_LIST ) {
 806         /* Only a remote entry, but both filters:
 807          * Test the complete filter
 808          */
 809                 rc = test_filter( op, rs->sr_entry, tc->orig );
 810                 if ( rc == LDAP_COMPARE_TRUE ) {
 811                         rc = SLAP_CB_CONTINUE;
 812                 } else {
 813                         rc = 0;
 814                 }
 815         } else {
 816         /* Only a remote entry, only remote filter:
 817          * just pass thru
 818          */
 819                 rc = SLAP_CB_CONTINUE;
 820         }
 821
 822         op->o_bd = db;
 823         return rc;
 824 }
 825
 826 /* Dup the filter, excluding invalid elements */
 827 static Filter *
 828 trans_filter_dup(Operation *op, Filter *f, AttributeName *an)
 829 {
 830         Filter *n = NULL;
 831
 832         if ( !f )
 833                 return NULL;
 834
 835         switch( f->f_choice & SLAPD_FILTER_MASK ) {
 836         case SLAPD_FILTER_COMPUTED:
 837                 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 838                 n->f_choice = f->f_choice;
 839                 n->f_result = f->f_result;
 840                 n->f_next = NULL;
 841                 break;
 842
 843         case LDAP_FILTER_PRESENT:
 844                 if ( ad_inlist( f->f_desc, an )) {
 845                         n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 846                         n->f_choice = f->f_choice;
 847                         n->f_desc = f->f_desc;
 848                         n->f_next = NULL;
 849                 }
 850                 break;
 851
 852         case LDAP_FILTER_EQUALITY:
 853         case LDAP_FILTER_GE:
 854         case LDAP_FILTER_LE:
 855         case LDAP_FILTER_APPROX:
 856         case LDAP_FILTER_SUBSTRINGS:
 857         case LDAP_FILTER_EXT:
 858                 if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
 859                         n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 860                         n->f_choice = f->f_choice;
 861                         n->f_ava = f->f_ava;
 862                         n->f_next = NULL;
 863                 }
 864                 break;
 865
 866         case LDAP_FILTER_AND:
 867         case LDAP_FILTER_OR:
 868         case LDAP_FILTER_NOT: {
 869                 Filter **p;
 870
 871                 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 872                 n->f_choice = f->f_choice;
 873                 n->f_next = NULL;
 874
 875                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 876                         *p = trans_filter_dup( op, f, an );
 877                         if ( !*p )
 878                                 continue;
 879                         p = &(*p)->f_next;
 880                 }
 881                 /* nothing valid in this list */
 882                 if ( !n->f_list ) {
 883                         op->o_tmpfree( n, op->o_tmpmemctx );
 884                         return NULL;
 885                 }
 886                 /* Only 1 element in this list */
 887                 if ((n->f_choice & SLAPD_FILTER_MASK) != LDAP_FILTER_NOT &&
 888                         !n->f_list->f_next ) {
 889                         f = n->f_list;
 890                         *n = *f;
 891                         op->o_tmpfree( f, op->o_tmpmemctx );
 892                 }
 893                 break;
 894         }
 895         }
 896         return n;
 897 }
 898
 899 static void
 900 trans_filter_free( Operation *op, Filter *f )
 901 {
 902         Filter *n, *p, *next;
 903
 904         f->f_choice &= SLAPD_FILTER_MASK;
 905
 906         switch( f->f_choice ) {
 907         case LDAP_FILTER_AND:
 908         case LDAP_FILTER_OR:
 909         case LDAP_FILTER_NOT:
 910                 /* Free in reverse order */
 911                 n = NULL;
 912                 for ( p = f->f_list; p; p = next ) {
 913                         next = p->f_next;
 914                         p->f_next = n;
 915                         n = p;
 916                 }
 917                 for ( p = n; p; p = next ) {
 918                         next = p->f_next;
 919                         trans_filter_free( op, p );
 920                 }
 921                 break;
 922         default:
 923                 break;
 924         }
 925         op->o_tmpfree( f, op->o_tmpmemctx );
 926 }
 927
 928 /*
 929 ** translucent_search()
 930 **      search via captive backend;
 931 **      override results with any local data;
 932 **
 933 */
 934
 935 static int translucent_search(Operation *op, SlapReply *rs) {
 936         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 937         translucent_info *ov = on->on_bi.bi_private;
 938         slap_callback cb = { NULL, NULL, NULL, NULL };
 939         trans_ctx tc;
 940         Filter *fl, *fr;
 941         struct berval fbv;
 942         int rc = 0;
 943
 944         Debug(LDAP_DEBUG_TRACE, "==> translucent_search: <%s> %s\n",
 945                 op->o_req_dn.bv_val, op->ors_filterstr.bv_val, 0);
 946
 947         if(ov->defer_db_open) {
 948                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 949                         "remote DB not available");
 950                 return(rs->sr_err);
 951         }
 952
 953         fr = ov->remote ? trans_filter_dup( op, op->ors_filter, ov->remote ) : NULL;
 954         fl = ov->local ? trans_filter_dup( op, op->ors_filter, ov->local ) : NULL;
 955         cb.sc_response = (slap_response *) translucent_search_cb;
 956         cb.sc_private = &tc;
 957         cb.sc_next = op->o_callback;
 958
 959         tc.db = op->o_bd;
 960         tc.on = on;
 961         tc.orig = op->ors_filter;
 962         tc.list = NULL;
 963         tc.step = 0;
 964         fbv = op->ors_filterstr;
 965
 966         op->o_callback = &cb;
 967
 968         if ( fr || !fl ) {
 969                 op->o_bd = &ov->db;
 970                 tc.step |= RMT_SIDE;
 971                 if ( fl ) {
 972                         tc.step |= USE_LIST;
 973                         op->ors_filter = fr;
 974                         filter2bv_x( op, fr, &op->ors_filterstr );
 975                 }
 976                 rc = ov->db.bd_info->bi_op_search(op, rs);
 977                 op->o_bd = tc.db;
 978                 if ( fl ) {
 979                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 980                 }
 981         }
 982         if ( fl && !rc ) {
 983                 tc.step |= LCL_SIDE;
 984                 op->ors_filter = fl;
 985                 filter2bv_x( op, fl, &op->ors_filterstr );
 986                 rc = overlay_op_walk( op, rs, op_search, on->on_info, on->on_next );
 987                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 988         }
 989         op->ors_filterstr = fbv;
 990         op->ors_filter = tc.orig;
 991         op->o_callback = cb.sc_next;
 992         /* Send out anything remaining on the list and finish */
 993         if ( tc.step & USE_LIST ) {
 994                 if ( tc.list ) {
 995                         Avlnode *av;
 996
 997                         av = tavl_end( tc.list, TAVL_DIR_LEFT );
 998                         while ( av ) {
 999                                 rs->sr_entry = av->avl_data;
1000                                 rc = test_filter( op, rs->sr_entry, op->ors_filter );
1001                                 if ( rc == LDAP_COMPARE_TRUE ) {
1002                                         rs->sr_flags = REP_ENTRY_MUSTBEFREED;
1003                                         rc = send_search_entry( op, rs );
1004                                         if ( rc ) break;
1005                                 } else {
1006                                         entry_free( rs->sr_entry );
1007                                 }
1008                                 av = tavl_next( av, TAVL_DIR_RIGHT );
1009                         }
1010                         tavl_free( tc.list, NULL );
1011                         rs->sr_entry = NULL;
1012                 }
1013                 send_ldap_result( op, rs );
1014         }
1015
1016         /* Free in reverse order */
1017         if ( fl )
1018                 trans_filter_free( op, fl );
1019         if ( fr )
1020                 trans_filter_free( op, fr );
1021
1022         return rc;
1023 }
1024
1025
1026 /*
1027 ** translucent_bind()
1028 **      pass bind request to captive backend;
1029 **
1030 */
1031
1032 static int translucent_bind(Operation *op, SlapReply *rs) {
1033         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1034         translucent_info *ov = on->on_bi.bi_private;
1035         BackendDB *db;
1036         int rc;
1037
1038         Debug(LDAP_DEBUG_TRACE, "translucent_bind: <%s> method %d\n",
1039                 op->o_req_dn.bv_val, op->orb_method, 0);
1040
1041         if(ov->defer_db_open) {
1042                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1043                         "remote DB not available");
1044                 return(rs->sr_err);
1045         }
1046         db = op->o_bd;
1047         op->o_bd = &ov->db;
1048         rc = ov->db.bd_info->bi_op_bind(op, rs);
1049         op->o_bd = db;
1050         return rc;
1051 }
1052
1053 /*
1054 ** translucent_connection_destroy()
1055 **      pass disconnect notification to captive backend;
1056 **
1057 */
1058
1059 static int translucent_connection_destroy(BackendDB *be, Connection *conn) {
1060         slap_overinst *on = (slap_overinst *) be->bd_info;
1061         translucent_info *ov = on->on_bi.bi_private;
1062         int rc = 0;
1063
1064         Debug(LDAP_DEBUG_TRACE, "translucent_connection_destroy\n", 0, 0, 0);
1065
1066         rc = ov->db.bd_info->bi_connection_destroy(&ov->db, conn);
1067
1068         return(rc);
1069 }
1070
1071 /*
1072 ** translucent_db_config()
1073 **      pass config directives to captive backend;
1074 **      parse unrecognized directives ourselves;
1075 **
1076 */
1077
1078 static int translucent_db_config(
1079         BackendDB       *be,
1080         const char      *fname,
1081         int             lineno,
1082         int             argc,
1083         char            **argv
1084 )
1085 {
1086         slap_overinst *on = (slap_overinst *) be->bd_info;
1087         translucent_info *ov = on->on_bi.bi_private;
1088
1089         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_config: %s\n",
1090               argc ? argv[0] : "", 0, 0);
1091
1092         /* Something for the captive database? */
1093         if ( ov->db.bd_info && ov->db.bd_info->bi_db_config )
1094                 return ov->db.bd_info->bi_db_config( &ov->db, fname, lineno,
1095                         argc, argv );
1096         return SLAP_CONF_UNKNOWN;
1097 }
1098
1099 /*
1100 ** translucent_db_init()
1101 **      initialize the captive backend;
1102 **
1103 */
1104
1105 static int translucent_db_init(BackendDB *be, ConfigReply *cr) {
1106         slap_overinst *on = (slap_overinst *) be->bd_info;
1107         translucent_info *ov;
1108
1109         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_init\n", 0, 0, 0);
1110
1111         ov = ch_calloc(1, sizeof(translucent_info));
1112         on->on_bi.bi_private = ov;
1113         ov->db = *be;
1114         ov->db.be_private = NULL;
1115         ov->db.be_pcl_mutexp = &ov->db.be_pcl_mutex;
1116         ov->defer_db_open = 1;
1117
1118         if ( !backend_db_init( "ldap", &ov->db, -1, NULL )) {
1119                 Debug( LDAP_DEBUG_CONFIG, "translucent: unable to open captive back-ldap\n", 0, 0, 0);
1120                 return 1;
1121         }
1122         SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
1123         SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NOLASTMOD;
1124
1125         return 0;
1126 }
1127
1128 /*
1129 ** translucent_db_open()
1130 **      if the captive backend has an open() method, call it;
1131 **
1132 */
1133
1134 static int translucent_db_open(BackendDB *be, ConfigReply *cr) {
1135         slap_overinst *on = (slap_overinst *) be->bd_info;
1136         translucent_info *ov = on->on_bi.bi_private;
1137         int rc;
1138
1139         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_open\n", 0, 0, 0);
1140
1141         /* need to inherit something from the original database... */
1142         ov->db.be_def_limit = be->be_def_limit;
1143         ov->db.be_limits = be->be_limits;
1144         ov->db.be_acl = be->be_acl;
1145         ov->db.be_dfltaccess = be->be_dfltaccess;
1146
1147         if ( ov->defer_db_open )
1148                 return 0;
1149
1150         rc = backend_startup_one( &ov->db, cr );
1151
1152         if(rc) Debug(LDAP_DEBUG_TRACE,
1153                 "translucent: bi_db_open() returned error %d\n", rc, 0, 0);
1154
1155         return(rc);
1156 }
1157
1158 /*
1159 ** translucent_db_close()
1160 **      if the captive backend has a close() method, call it
1161 **
1162 */
1163
1164 static int
1165 translucent_db_close( BackendDB *be, ConfigReply *cr )
1166 {
1167         slap_overinst *on = (slap_overinst *) be->bd_info;
1168         translucent_info *ov = on->on_bi.bi_private;
1169         int rc = 0;
1170
1171         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_close\n", 0, 0, 0);
1172
1173         if ( ov && ov->db.bd_info && ov->db.bd_info->bi_db_close ) {
1174                 rc = ov->db.bd_info->bi_db_close(&ov->db, NULL);
1175         }
1176
1177         return(rc);
1178 }
1179
1180 /*
1181 ** translucent_db_destroy()
1182 **      if the captive backend has a db_destroy() method, call it;
1183 **      free any config data
1184 **
1185 */
1186
1187 static int
1188 translucent_db_destroy( BackendDB *be, ConfigReply *cr )
1189 {
1190         slap_overinst *on = (slap_overinst *) be->bd_info;
1191         translucent_info *ov = on->on_bi.bi_private;
1192         int rc = 0;
1193
1194         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_destroy\n", 0, 0, 0);
1195
1196         if ( ov ) {
1197                 if ( ov->remote )
1198                         anlist_free( ov->remote, 1, NULL );
1199                 if ( ov->local )
1200                         anlist_free( ov->local, 1, NULL );
1201                 if ( ov->db.be_private != NULL ) {
1202                         backend_stopdown_one( &ov->db );
1203                 }
1204
1205                 ch_free(ov);
1206                 on->on_bi.bi_private = NULL;
1207         }
1208
1209         return(rc);
1210 }
1211
1212 /*
1213 ** translucent_initialize()
1214 **      initialize the slap_overinst with our entry points;
1215 **
1216 */
1217
1218 int translucent_initialize() {
1219
1220         int rc;
1221
1222         Debug(LDAP_DEBUG_TRACE, "==> translucent_initialize\n", 0, 0, 0);
1223
1224         translucent.on_bi.bi_type       = "translucent";
1225         translucent.on_bi.bi_db_init    = translucent_db_init;
1226         translucent.on_bi.bi_db_config  = translucent_db_config;
1227         translucent.on_bi.bi_db_open    = translucent_db_open;
1228         translucent.on_bi.bi_db_close   = translucent_db_close;
1229         translucent.on_bi.bi_db_destroy = translucent_db_destroy;
1230         translucent.on_bi.bi_op_bind    = translucent_bind;
1231         translucent.on_bi.bi_op_add     = translucent_add;
1232         translucent.on_bi.bi_op_modify  = translucent_modify;
1233         translucent.on_bi.bi_op_modrdn  = translucent_modrdn;
1234         translucent.on_bi.bi_op_delete  = translucent_delete;
1235         translucent.on_bi.bi_op_search  = translucent_search;
1236         translucent.on_bi.bi_op_compare = translucent_compare;
1237         translucent.on_bi.bi_connection_destroy = translucent_connection_destroy;
1238
1239         translucent.on_bi.bi_cf_ocs = translucentocs;
1240         rc = config_register_schema ( translucentcfg, translucentocs );
1241         if ( rc ) return rc;
1242
1243         return(overlay_register(&translucent));
1244 }
1245
1246 #if SLAPD_OVER_TRANSLUCENT == SLAPD_MOD_DYNAMIC && defined(PIC)
1247 int init_module(int argc, char *argv[]) {
1248         return translucent_initialize();
1249 }
1250 #endif
1251
1252 #endif /* SLAPD_OVER_TRANSLUCENT */