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 2004-2007 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           Cft_Overlay, translucentcfg, NULL, translucent_cfadd },
  99         { "( OLcfgOvOc:14.2 "
 100           "NAME 'olcTranslucentDatabase' "
 101           "DESC 'Translucent target database configuration' "
 102           "AUXILIARY )", Cft_Misc, transdummy, translucent_ldadd },
 103         { NULL, 0, NULL }
 104 };
 105 /* for translucent_init() */
 106
 107 static int
 108 translucent_ldadd_cleanup( ConfigArgs *ca )
 109 {
 110         slap_overinst *on = ca->private;
 111         translucent_info *ov = on->on_bi.bi_private;
 112
 113         ov->defer_db_open = 0;
 114         return backend_startup_one( ca->be, &ca->reply );
 115 }
 116
 117 static int
 118 translucent_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
 119 {
 120         slap_overinst *on;
 121         translucent_info *ov;
 122
 123         Debug(LDAP_DEBUG_TRACE, "==> translucent_ldadd\n", 0, 0, 0);
 124
 125         if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
 126              cei->ce_bi->bi_cf_ocs != translucentocs )
 127                 return LDAP_CONSTRAINT_VIOLATION;
 128
 129         on = (slap_overinst *)cei->ce_bi;
 130         ov = on->on_bi.bi_private;
 131         ca->be = &ov->db;
 132         ca->private = on;
 133         if ( CONFIG_ONLINE_ADD( ca ))
 134                 ca->cleanup = translucent_ldadd_cleanup;
 135         else
 136                 ov->defer_db_open = 0;
 137
 138         return LDAP_SUCCESS;
 139 }
 140
 141 static int
 142 translucent_cfadd( Operation *op, SlapReply *rs, Entry *e, ConfigArgs *ca )
 143 {
 144         CfEntryInfo *cei = e->e_private;
 145         slap_overinst *on = (slap_overinst *)cei->ce_bi;
 146         translucent_info *ov = on->on_bi.bi_private;
 147         struct berval bv;
 148
 149         Debug(LDAP_DEBUG_TRACE, "==> translucent_cfadd\n", 0, 0, 0);
 150
 151         /* FIXME: should not hardcode "olcDatabase" here */
 152         bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
 153                 "olcDatabase=%s", ov->db.bd_info->bi_type );
 154         if ( bv.bv_len < 0 || bv.bv_len >= sizeof( ca->cr_msg ) ) {
 155                 return -1;
 156         }
 157         bv.bv_val = ca->cr_msg;
 158         ca->be = &ov->db;
 159         ov->defer_db_open = 0;
 160
 161         /* We can only create this entry if the database is table-driven
 162          */
 163         if ( ov->db.bd_info->bi_cf_ocs )
 164                 config_build_entry( op, rs, cei, ca, &bv,
 165                                     ov->db.bd_info->bi_cf_ocs,
 166                                     &translucentocs[1] );
 167
 168         return 0;
 169 }
 170
 171 static int
 172 translucent_cf_gen( ConfigArgs *c )
 173 {
 174         slap_overinst   *on = (slap_overinst *)c->bi;
 175         translucent_info *ov = on->on_bi.bi_private;
 176         AttributeName **an, *a2;
 177         int i;
 178
 179         if ( c->type == TRANS_LOCAL )
 180                 an = &ov->local;
 181         else
 182                 an = &ov->remote;
 183
 184         if ( c->op == SLAP_CONFIG_EMIT ) {
 185                 for ( i = 0; !BER_BVISNULL(&(*an)[i].an_name); i++ ) {
 186                         value_add_one( &c->rvalue_vals, &(*an)[i].an_name );
 187                 }
 188                 return ( i < 1 );
 189         } else if ( c->op == LDAP_MOD_DELETE ) {
 190                 if ( c->valx < 0 ) {
 191                         anlist_free( *an, 1, NULL );
 192                         *an = NULL;
 193                 } else {
 194                         i = c->valx;
 195                         ch_free( (*an)[i].an_name.bv_val );
 196                         do {
 197                                 (*an)[i] = (*an)[i+1];
 198                         } while ( !BER_BVISNULL( &(*an)[i].an_name ));
 199                 }
 200                 return 0;
 201         }
 202         a2 = str2anlist( *an, c->argv[1], "," );
 203         if ( !a2 ) {
 204                 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse attribute %s",
 205                         c->argv[0], c->argv[1] );
 206                 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
 207                         "%s: %s\n", c->log, c->cr_msg, 0 );
 208                 return ARG_BAD_CONF;
 209         }
 210         *an = a2;
 211         return 0;
 212 }
 213
 214 static slap_overinst translucent;
 215
 216 /*
 217 ** glue_parent()
 218 **      call syncrepl_add_glue() with the parent suffix;
 219 **
 220 */
 221
 222 static struct berval glue[] = { BER_BVC("top"), BER_BVC("glue"), BER_BVNULL };
 223
 224 void glue_parent(Operation *op) {
 225         Operation nop = *op;
 226         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 227         struct berval ndn = BER_BVNULL;
 228         Attribute *a;
 229         Entry *e;
 230         struct berval   pdn;
 231
 232         dnParent( &op->o_req_ndn, &pdn );
 233         ber_dupbv_x( &ndn, &pdn, op->o_tmpmemctx );
 234
 235         Debug(LDAP_DEBUG_TRACE, "=> glue_parent: fabricating glue for <%s>\n", ndn.bv_val, 0, 0);
 236
 237         e = entry_alloc();
 238         e->e_id = NOID;
 239         ber_dupbv(&e->e_name, &ndn);
 240         ber_dupbv(&e->e_nname, &ndn);
 241
 242         a = attr_alloc( slap_schema.si_ad_objectClass );
 243         a->a_numvals = 2;
 244         a->a_vals = ch_malloc(sizeof(struct berval) * 3);
 245         ber_dupbv(&a->a_vals[0], &glue[0]);
 246         ber_dupbv(&a->a_vals[1], &glue[1]);
 247         ber_dupbv(&a->a_vals[2], &glue[2]);
 248         a->a_nvals = a->a_vals;
 249         a->a_next = e->e_attrs;
 250         e->e_attrs = a;
 251
 252         a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
 253         a->a_numvals = 1;
 254         a->a_vals = ch_malloc(sizeof(struct berval) * 2);
 255         ber_dupbv(&a->a_vals[0], &glue[1]);
 256         ber_dupbv(&a->a_vals[1], &glue[2]);
 257         a->a_nvals = a->a_vals;
 258         a->a_next = e->e_attrs;
 259         e->e_attrs = a;
 260
 261         nop.o_req_dn = ndn;
 262         nop.o_req_ndn = ndn;
 263         nop.ora_e = e;
 264
 265         nop.o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
 266         syncrepl_add_glue(&nop, e);
 267         nop.o_bd->bd_info = (BackendInfo *) on;
 268
 269         op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
 270
 271         return;
 272 }
 273
 274 /*
 275 ** dup_bervarray()
 276 **      copy a BerVarray;
 277 */
 278
 279 BerVarray dup_bervarray(BerVarray b) {
 280         int i, len;
 281         BerVarray nb;
 282         for(len = 0; b[len].bv_val; len++);
 283         nb = ch_malloc((len+1) * sizeof(BerValue));
 284         for(i = 0; i < len; i++) ber_dupbv(&nb[i], &b[i]);
 285         nb[len].bv_val = NULL;
 286         nb[len].bv_len = 0;
 287         return(nb);
 288 }
 289
 290 /*
 291 ** free_attr_chain()
 292 **      free only the Attribute*, not the contents;
 293 **
 294 */
 295 void free_attr_chain(Attribute *b) {
 296         Attribute *a;
 297         for(a=b; a; a=a->a_next) {
 298                 a->a_vals = NULL;
 299                 a->a_nvals = NULL;
 300         }
 301         attrs_free( b );
 302         return;
 303 }
 304
 305 /*
 306 ** translucent_add()
 307 **      if not bound as root, send ACCESS error;
 308 **      if glue, glue_parent();
 309 **      return CONTINUE;
 310 **
 311 */
 312
 313 static int translucent_add(Operation *op, SlapReply *rs) {
 314         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 315         translucent_info *ov = on->on_bi.bi_private;
 316         Debug(LDAP_DEBUG_TRACE, "==> translucent_add: %s\n",
 317                 op->o_req_dn.bv_val, 0, 0);
 318         if(!be_isroot(op)) {
 319                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 320                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 321                         "user modification of overlay database not permitted");
 322                 op->o_bd->bd_info = (BackendInfo *) on;
 323                 return(rs->sr_err);
 324         }
 325         if(!ov->no_glue) glue_parent(op);
 326         return(SLAP_CB_CONTINUE);
 327 }
 328
 329 /*
 330 ** translucent_modrdn()
 331 **      if not bound as root, send ACCESS error;
 332 **      if !glue, glue_parent();
 333 **      else return CONTINUE;
 334 **
 335 */
 336
 337 static int translucent_modrdn(Operation *op, SlapReply *rs) {
 338         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 339         translucent_info *ov = on->on_bi.bi_private;
 340         Debug(LDAP_DEBUG_TRACE, "==> translucent_modrdn: %s -> %s\n",
 341                 op->o_req_dn.bv_val, op->orr_newrdn.bv_val, 0);
 342         if(!be_isroot(op)) {
 343                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 344                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 345                         "user modification of overlay database not permitted");
 346                 op->o_bd->bd_info = (BackendInfo *) on;
 347                 return(rs->sr_err);
 348         }
 349         if(!ov->no_glue) {
 350                 op->o_tag = LDAP_REQ_ADD;
 351                 glue_parent(op);
 352                 op->o_tag = LDAP_REQ_MODRDN;
 353         }
 354         return(SLAP_CB_CONTINUE);
 355 }
 356
 357 /*
 358 ** translucent_delete()
 359 **      if not bound as root, send ACCESS error;
 360 **      else return CONTINUE;
 361 **
 362 */
 363
 364 static int translucent_delete(Operation *op, SlapReply *rs) {
 365         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 366         Debug(LDAP_DEBUG_TRACE, "==> translucent_delete: %s\n",
 367                 op->o_req_dn.bv_val, 0, 0);
 368         if(!be_isroot(op)) {
 369                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 370                 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
 371                         "user modification of overlay database not permitted");
 372                 op->o_bd->bd_info = (BackendInfo *) on;
 373                 return(rs->sr_err);
 374         }
 375         return(SLAP_CB_CONTINUE);
 376 }
 377
 378 static int
 379 translucent_tag_cb( Operation *op, SlapReply *rs )
 380 {
 381         op->o_tag = LDAP_REQ_MODIFY;
 382         op->orm_modlist = op->o_callback->sc_private;
 383         rs->sr_tag = slap_req2res( op->o_tag );
 384
 385         return SLAP_CB_CONTINUE;
 386 }
 387
 388 /*
 389 ** translucent_modify()
 390 **      modify in local backend if exists in both;
 391 **      otherwise, add to local backend;
 392 **      fail if not defined in captive backend;
 393 **
 394 */
 395
 396 static int translucent_modify(Operation *op, SlapReply *rs) {
 397         SlapReply nrs = { REP_RESULT };
 398
 399         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 400         translucent_info *ov = on->on_bi.bi_private;
 401         Entry *e = NULL, *re = NULL;
 402         Attribute *a, *ax;
 403         Modifications *m, **mm;
 404         BackendDB *db;
 405         int del, rc, erc = 0;
 406         slap_callback cb = { 0 };
 407
 408         Debug(LDAP_DEBUG_TRACE, "==> translucent_modify: %s\n",
 409                 op->o_req_dn.bv_val, 0, 0);
 410
 411         if(ov->defer_db_open) {
 412                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 413                         "remote DB not available");
 414                 return(rs->sr_err);
 415         }
 416 /*
 417 ** fetch entry from the captive backend;
 418 ** if it did not exist, fail;
 419 ** release it, if captive backend supports this;
 420 **
 421 */
 422
 423         db = op->o_bd;
 424         op->o_bd = &ov->db;
 425         rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
 426         if(rc != LDAP_SUCCESS || re == NULL ) {
 427                 send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
 428                         "attempt to modify nonexistent local record");
 429                 return(rs->sr_err);
 430         }
 431         op->o_bd = db;
 432 /*
 433 ** fetch entry from local backend;
 434 ** if it exists:
 435 **      foreach Modification:
 436 **          if attr not present in local:
 437 **              if Mod == LDAP_MOD_DELETE:
 438 **                  if remote attr not present, return NO_SUCH;
 439 **                  if remote attr present, drop this Mod;
 440 **              else force this Mod to LDAP_MOD_ADD;
 441 **      return CONTINUE;
 442 **
 443 */
 444
 445         op->o_bd->bd_info = (BackendInfo *) on->on_info;
 446         rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
 447         op->o_bd->bd_info = (BackendInfo *) on;
 448
 449         if(e && rc == LDAP_SUCCESS) {
 450                 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: found local entry\n", 0, 0, 0);
 451                 for(mm = &op->orm_modlist; *mm; ) {
 452                         m = *mm;
 453                         for(a = e->e_attrs; a; a = a->a_next)
 454                                 if(a->a_desc == m->sml_desc) break;
 455                         if(a) {
 456                                 mm = &m->sml_next;
 457                                 continue;               /* found local attr */
 458                         }
 459                         if(m->sml_op == LDAP_MOD_DELETE) {
 460                                 for(a = re->e_attrs; a; a = a->a_next)
 461                                         if(a->a_desc == m->sml_desc) break;
 462                                 /* not found remote attr */
 463                                 if(!a) {
 464                                         erc = LDAP_NO_SUCH_ATTRIBUTE;
 465                                         goto release;
 466                                 }
 467                                 if(ov->strict) {
 468                                         erc = LDAP_CONSTRAINT_VIOLATION;
 469                                         goto release;
 470                                 }
 471                                 Debug(LDAP_DEBUG_TRACE,
 472                                         "=> translucent_modify: silently dropping delete: %s\n",
 473                                         m->sml_desc->ad_cname.bv_val, 0, 0);
 474                                 *mm = m->sml_next;
 475                                 m->sml_next = NULL;
 476                                 slap_mods_free(m, 1);
 477                                 continue;
 478                         }
 479                         m->sml_op = LDAP_MOD_ADD;
 480                         mm = &m->sml_next;
 481                 }
 482                 erc = SLAP_CB_CONTINUE;
 483 release:
 484                 if(re) {
 485                         if(ov->db.bd_info->bi_entry_release_rw) {
 486                                 op->o_bd = &ov->db;
 487                                 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
 488                                 op->o_bd = db;
 489                         } else
 490                                 entry_free(re);
 491                 }
 492                 op->o_bd->bd_info = (BackendInfo *) on->on_info;
 493                 be_entry_release_r(op, e);
 494                 op->o_bd->bd_info = (BackendInfo *) on;
 495                 if(erc == SLAP_CB_CONTINUE) {
 496                         return(erc);
 497                 } else if(erc) {
 498                         send_ldap_error(op, rs, erc,
 499                                 "attempt to delete nonexistent attribute");
 500                         return(erc);
 501                 }
 502         }
 503
 504         /* don't leak remote entry copy */
 505         if(re) {
 506                 if(ov->db.bd_info->bi_entry_release_rw) {
 507                         op->o_bd = &ov->db;
 508                         ov->db.bd_info->bi_entry_release_rw(op, re, 0);
 509                         op->o_bd = db;
 510                 } else
 511                         entry_free(re);
 512         }
 513 /*
 514 ** foreach Modification:
 515 **      if MOD_ADD or MOD_REPLACE, add Attribute;
 516 ** if no Modifications were suitable:
 517 **      if strict, throw CONSTRAINT_VIOLATION;
 518 **      else, return early SUCCESS;
 519 ** fabricate Entry with new Attribute chain;
 520 ** glue_parent() for this Entry;
 521 ** call bi_op_add() in local backend;
 522 **
 523 */
 524
 525         Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: fabricating local add\n", 0, 0, 0);
 526         a = NULL;
 527         for(del = 0, ax = NULL, m = op->orm_modlist; m; m = m->sml_next) {
 528                 Attribute atmp;
 529                 if(((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_ADD) &&
 530                    ((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)) {
 531                         Debug(LDAP_DEBUG_ANY,
 532                                 "=> translucent_modify: silently dropped modification(%d): %s\n",
 533                                 m->sml_op, m->sml_desc->ad_cname.bv_val, 0);
 534                         if((m->sml_op & LDAP_MOD_OP) == LDAP_MOD_DELETE) del++;
 535                         continue;
 536                 }
 537                 atmp.a_desc = m->sml_desc;
 538                 atmp.a_vals = m->sml_values;
 539                 atmp.a_nvals = m->sml_nvalues ? m->sml_nvalues : atmp.a_vals;
 540                 atmp.a_numvals = m->sml_numvals;
 541                 atmp.a_flags = 0;
 542                 a = attr_dup( &atmp );
 543                 a->a_next  = ax;
 544                 ax = a;
 545         }
 546
 547         if(del && ov->strict) {
 548                 attrs_free( a );
 549                 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
 550                         "attempt to delete attributes from local database");
 551                 return(rs->sr_err);
 552         }
 553
 554         if(!ax) {
 555                 if(ov->strict) {
 556                         send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
 557                                 "modification contained other than ADD or REPLACE");
 558                         return(rs->sr_err);
 559                 }
 560                 /* rs->sr_text = "no valid modification found"; */
 561                 rs->sr_err = LDAP_SUCCESS;
 562                 send_ldap_result(op, rs);
 563                 return(rs->sr_err);
 564         }
 565
 566         e = entry_alloc();
 567         ber_dupbv( &e->e_name, &op->o_req_dn );
 568         ber_dupbv( &e->e_nname, &op->o_req_ndn );
 569         e->e_attrs = a;
 570
 571         op->o_tag       = LDAP_REQ_ADD;
 572         cb.sc_response = translucent_tag_cb;
 573         cb.sc_private = op->orm_modlist;
 574         op->oq_add.rs_e = e;
 575
 576         glue_parent(op);
 577
 578         cb.sc_next = op->o_callback;
 579         op->o_callback = &cb;
 580         rc = on->on_info->oi_orig->bi_op_add(op, &nrs);
 581         if ( op->ora_e == e )
 582                 entry_free( e );
 583         op->o_callback = cb.sc_next;
 584
 585         return(rc);
 586 }
 587
 588 static int translucent_compare(Operation *op, SlapReply *rs) {
 589         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 590         translucent_info *ov = on->on_bi.bi_private;
 591         AttributeAssertion *ava = op->orc_ava;
 592         Entry *e;
 593         BackendDB *db;
 594         int rc;
 595
 596         Debug(LDAP_DEBUG_TRACE, "==> translucent_compare: <%s> %s:%s\n",
 597                 op->o_req_dn.bv_val, ava->aa_desc->ad_cname.bv_val, ava->aa_value.bv_val);
 598
 599 /*
 600 ** if the local backend has an entry for this attribute:
 601 **      CONTINUE and let it do the compare;
 602 **
 603 */
 604         rc = overlay_entry_get_ov(op, &op->o_req_ndn, NULL, ava->aa_desc, 0, &e, on);
 605         if(e && rc == LDAP_SUCCESS) {
 606                 overlay_entry_release_ov(op, e, 0, on);
 607                 return(SLAP_CB_CONTINUE);
 608         }
 609
 610         if(ov->defer_db_open) {
 611                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 612                         "remote DB not available");
 613                 return(rs->sr_err);
 614         }
 615 /*
 616 ** call compare() in the captive backend;
 617 ** return the result;
 618 **
 619 */
 620         db = op->o_bd;
 621         op->o_bd = &ov->db;
 622         rc = ov->db.bd_info->bi_op_compare(op, rs);
 623         op->o_bd = db;
 624
 625         return(rc);
 626 }
 627
 628 /*
 629 ** translucent_search_cb()
 630 **      merge local data with remote data
 631 **
 632 ** Four cases:
 633 ** 1: remote search, no local filter
 634 **      merge data and send immediately
 635 ** 2: remote search, with local filter
 636 **      merge data and save
 637 ** 3: local search, no remote filter
 638 **      merge data and send immediately
 639 ** 4: local search, with remote filter
 640 **      check list, merge, send, delete
 641 */
 642
 643 #define RMT_SIDE        0
 644 #define LCL_SIDE        1
 645 #define USE_LIST        2
 646
 647 typedef struct trans_ctx {
 648         BackendDB *db;
 649         slap_overinst *on;
 650         Filter *orig;
 651         Avlnode *list;
 652         int step;
 653 } trans_ctx;
 654
 655 static int translucent_search_cb(Operation *op, SlapReply *rs) {
 656         trans_ctx *tc;
 657         BackendDB *db;
 658         slap_overinst *on;
 659         translucent_info *ov;
 660         Entry *le, *re;
 661         Attribute *a, *ax, *an, *as = NULL;
 662         int rc;
 663
 664         tc = op->o_callback->sc_private;
 665
 666         /* Don't let the op complete while we're gathering data */
 667         if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
 668                 return 0;
 669
 670         if(!op || !rs || rs->sr_type != REP_SEARCH || !rs->sr_entry)
 671                 return(SLAP_CB_CONTINUE);
 672
 673         Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
 674                 rs->sr_entry->e_name.bv_val, 0, 0);
 675
 676         on = tc->on;
 677         ov = on->on_bi.bi_private;
 678
 679         db = op->o_bd;
 680         re = NULL;
 681
 682         /* If we have local, get remote */
 683         if ( tc->step & LCL_SIDE ) {
 684                 le = rs->sr_entry;
 685                 /* If entry is already on list, use it */
 686                 if ( tc->step & USE_LIST ) {
 687                         re = tavl_delete( &tc->list, le, entry_dn_cmp );
 688                         if ( re ) {
 689                                 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 690                                         rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 691                                         be_entry_release_r( op, rs->sr_entry );
 692                                 }
 693                                 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 694                                         rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 695                                         entry_free( rs->sr_entry );
 696                                 }
 697                                 rc = test_filter( op, re, tc->orig );
 698                                 if ( rc == LDAP_COMPARE_TRUE ) {
 699                                         rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
 700                                         rs->sr_entry = re;
 701                                         return SLAP_CB_CONTINUE;
 702                                 } else {
 703                                         entry_free( re );
 704                                         rs->sr_entry = NULL;
 705                                         return 0;
 706                                 }
 707                         }
 708                 }
 709                 op->o_bd = &ov->db;
 710                 rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
 711                 if ( rc == LDAP_SUCCESS && re ) {
 712                         Entry *tmp = entry_dup( re );
 713                         be_entry_release_r( op, re );
 714                         re = tmp;
 715                 }
 716         } else {
 717         /* Else we have remote, get local */
 718                 op->o_bd = tc->db;
 719                 rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
 720                 if ( rc == LDAP_SUCCESS && le ) {
 721                         re = entry_dup( rs->sr_entry );
 722                         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 723                                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 724                                 be_entry_release_r( op, rs->sr_entry );
 725                         }
 726                         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 727                                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 728                                 entry_free( rs->sr_entry );
 729                         }
 730                 } else {
 731                         le = NULL;
 732                 }
 733         }
 734
 735 /*
 736 ** if we got remote and local entry:
 737 **      foreach local attr:
 738 **              foreach remote attr:
 739 **                      if match, remote attr with local attr;
 740 **                      if new local, add to list;
 741 **      append new local attrs to remote;
 742 **
 743 */
 744
 745         if ( re && le ) {
 746                 for(ax = le->e_attrs; ax; ax = ax->a_next) {
 747                         for(a = re->e_attrs; a; a = a->a_next) {
 748                                 if(a->a_desc == ax->a_desc) {
 749                                         if(a->a_vals != a->a_nvals)
 750                                                 ber_bvarray_free(a->a_nvals);
 751                                         ber_bvarray_free(a->a_vals);
 752                                         a->a_vals = dup_bervarray(ax->a_vals);
 753                                         a->a_nvals = (ax->a_vals == ax->a_nvals) ?
 754                                                 a->a_vals : dup_bervarray(ax->a_nvals);
 755                                         break;
 756                                 }
 757                         }
 758                         if(a) continue;
 759                         an = attr_dup(ax);
 760                         an->a_next = as;
 761                         as = an;
 762                 }
 763                 /* Dispose of local entry */
 764                 if ( tc->step & LCL_SIDE ) {
 765                         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
 766                                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
 767                                 be_entry_release_r( op, rs->sr_entry );
 768                         }
 769                         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 770                                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 771                                 entry_free( rs->sr_entry );
 772                         }
 773                 } else {
 774                         overlay_entry_release_ov(op, le, 0, on);
 775                 }
 776
 777                 /* literally append, so locals are always last */
 778                 if(as) {
 779                         if(re->e_attrs) {
 780                                 for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
 781                                 ax->a_next = as;
 782                         } else {
 783                                 re->e_attrs = as;
 784                         }
 785                 }
 786                 /* If both filters, save entry for later */
 787                 if ( tc->step == (USE_LIST|RMT_SIDE) ) {
 788                         tavl_insert( &tc->list, re, entry_dn_cmp, avl_dup_error );
 789                         rs->sr_entry = NULL;
 790                         rc = 0;
 791                 } else {
 792                 /* send it now */
 793                         rs->sr_entry = re;
 794                         rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
 795                         rc = SLAP_CB_CONTINUE;
 796                 }
 797         } else if ( le ) {
 798         /* Only a local entry: remote was deleted
 799          * Ought to delete the local too...
 800          */
 801                 rc = 0;
 802         } else if ( tc->step & USE_LIST ) {
 803         /* Only a remote entry, but both filters:
 804          * Test the complete filter
 805          */
 806                 rc = test_filter( op, rs->sr_entry, tc->orig );
 807                 if ( rc == LDAP_COMPARE_TRUE ) {
 808                         rc = SLAP_CB_CONTINUE;
 809                 } else {
 810                         rc = 0;
 811                 }
 812         } else {
 813         /* Only a remote entry, only remote filter:
 814          * just pass thru
 815          */
 816                 rc = SLAP_CB_CONTINUE;
 817         }
 818
 819         op->o_bd = db;
 820         return rc;
 821 }
 822
 823 /* Dup the filter, excluding invalid elements */
 824 static Filter *
 825 trans_filter_dup(Operation *op, Filter *f, AttributeName *an)
 826 {
 827         Filter *n = NULL;
 828
 829         if ( !f )
 830                 return NULL;
 831
 832         switch( f->f_choice & SLAPD_FILTER_MASK ) {
 833         case SLAPD_FILTER_COMPUTED:
 834                 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 835                 n->f_choice = f->f_choice;
 836                 n->f_result = f->f_result;
 837                 n->f_next = NULL;
 838                 break;
 839
 840         case LDAP_FILTER_PRESENT:
 841                 if ( ad_inlist( f->f_desc, an )) {
 842                         n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 843                         n->f_choice = f->f_choice;
 844                         n->f_desc = f->f_desc;
 845                         n->f_next = NULL;
 846                 }
 847                 break;
 848
 849         case LDAP_FILTER_EQUALITY:
 850         case LDAP_FILTER_GE:
 851         case LDAP_FILTER_LE:
 852         case LDAP_FILTER_APPROX:
 853         case LDAP_FILTER_SUBSTRINGS:
 854         case LDAP_FILTER_EXT:
 855                 if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
 856                         n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 857                         n->f_choice = f->f_choice;
 858                         n->f_ava = f->f_ava;
 859                         n->f_next = NULL;
 860                 }
 861                 break;
 862
 863         case LDAP_FILTER_AND:
 864         case LDAP_FILTER_OR:
 865         case LDAP_FILTER_NOT: {
 866                 Filter **p;
 867
 868                 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
 869                 n->f_choice = f->f_choice;
 870                 n->f_next = NULL;
 871
 872                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 873                         *p = trans_filter_dup( op, f, an );
 874                         if ( !*p )
 875                                 continue;
 876                         p = &(*p)->f_next;
 877                 }
 878                 /* nothing valid in this list */
 879                 if ( !n->f_list ) {
 880                         op->o_tmpfree( n, op->o_tmpmemctx );
 881                         return NULL;
 882                 }
 883                 /* Only 1 element in this list */
 884                 if ((n->f_choice & SLAPD_FILTER_MASK) != LDAP_FILTER_NOT &&
 885                         !n->f_list->f_next ) {
 886                         f = n->f_list;
 887                         *n = *f;
 888                         op->o_tmpfree( f, op->o_tmpmemctx );
 889                 }
 890                 break;
 891         }
 892         }
 893         return n;
 894 }
 895
 896 static void
 897 trans_filter_free( Operation *op, Filter *f )
 898 {
 899         Filter *n, *p, *next;
 900
 901         f->f_choice &= SLAPD_FILTER_MASK;
 902
 903         switch( f->f_choice ) {
 904         case LDAP_FILTER_AND:
 905         case LDAP_FILTER_OR:
 906         case LDAP_FILTER_NOT:
 907                 /* Free in reverse order */
 908                 n = NULL;
 909                 for ( p = f->f_list; p; p = next ) {
 910                         next = p->f_next;
 911                         p->f_next = n;
 912                         n = p;
 913                 }
 914                 for ( p = n; p; p = next ) {
 915                         next = p->f_next;
 916                         trans_filter_free( op, p );
 917                 }
 918                 break;
 919         default:
 920                 break;
 921         }
 922         op->o_tmpfree( f, op->o_tmpmemctx );
 923 }
 924
 925 /*
 926 ** translucent_search()
 927 **      search via captive backend;
 928 **      override results with any local data;
 929 **
 930 */
 931
 932 static int translucent_search(Operation *op, SlapReply *rs) {
 933         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
 934         translucent_info *ov = on->on_bi.bi_private;
 935         slap_callback cb = { NULL, NULL, NULL, NULL };
 936         trans_ctx tc;
 937         Filter *fl, *fr;
 938         struct berval fbv;
 939         int rc = 0;
 940
 941         Debug(LDAP_DEBUG_TRACE, "==> translucent_search: <%s> %s\n",
 942                 op->o_req_dn.bv_val, op->ors_filterstr.bv_val, 0);
 943
 944         if(ov->defer_db_open) {
 945                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
 946                         "remote DB not available");
 947                 return(rs->sr_err);
 948         }
 949
 950         fr = ov->remote ? trans_filter_dup( op, op->ors_filter, ov->remote ) : NULL;
 951         fl = ov->local ? trans_filter_dup( op, op->ors_filter, ov->local ) : NULL;
 952         cb.sc_response = (slap_response *) translucent_search_cb;
 953         cb.sc_private = &tc;
 954         cb.sc_next = op->o_callback;
 955
 956         tc.db = op->o_bd;
 957         tc.on = on;
 958         tc.orig = op->ors_filter;
 959         tc.list = NULL;
 960         tc.step = 0;
 961         fbv = op->ors_filterstr;
 962
 963         op->o_callback = &cb;
 964
 965         if ( fr || !fl ) {
 966                 op->o_bd = &ov->db;
 967                 tc.step |= RMT_SIDE;
 968                 if ( fl ) {
 969                         tc.step |= USE_LIST;
 970                         op->ors_filter = fr;
 971                         filter2bv_x( op, fr, &op->ors_filterstr );
 972                 }
 973                 rc = ov->db.bd_info->bi_op_search(op, rs);
 974                 op->o_bd = tc.db;
 975                 if ( fl ) {
 976                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 977                 }
 978         }
 979         if ( fl && !rc ) {
 980                 tc.step |= LCL_SIDE;
 981                 op->ors_filter = fl;
 982                 filter2bv_x( op, fl, &op->ors_filterstr );
 983                 rc = overlay_op_walk( op, rs, op_search, on->on_info, on->on_next );
 984                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 985         }
 986         op->ors_filterstr = fbv;
 987         op->ors_filter = tc.orig;
 988         op->o_callback = cb.sc_next;
 989         /* Send out anything remaining on the list and finish */
 990         if ( tc.step & USE_LIST ) {
 991                 if ( tc.list ) {
 992                         Avlnode *av;
 993
 994                         av = tavl_end( tc.list, TAVL_DIR_LEFT );
 995                         while ( av ) {
 996                                 rs->sr_flags = REP_ENTRY_MUSTBEFREED;
 997                                 rs->sr_entry = av->avl_data;
 998                                 rc = send_search_entry( op, rs );
 999                                 if ( rc ) break;
1000                                 av = tavl_next( av, TAVL_DIR_RIGHT );
1001                         }
1002                         tavl_free( tc.list, NULL );
1003                 }
1004                 send_ldap_result( op, rs );
1005         }
1006
1007         /* Free in reverse order */
1008         if ( fl )
1009                 trans_filter_free( op, fl );
1010         if ( fr )
1011                 trans_filter_free( op, fr );
1012
1013         return rc;
1014 }
1015
1016
1017 /*
1018 ** translucent_bind()
1019 **      pass bind request to captive backend;
1020 **
1021 */
1022
1023 static int translucent_bind(Operation *op, SlapReply *rs) {
1024         slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1025         translucent_info *ov = on->on_bi.bi_private;
1026         BackendDB *db;
1027         int rc;
1028
1029         Debug(LDAP_DEBUG_TRACE, "translucent_bind: <%s> method %d\n",
1030                 op->o_req_dn.bv_val, op->orb_method, 0);
1031
1032         if(ov->defer_db_open) {
1033                 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1034                         "remote DB not available");
1035                 return(rs->sr_err);
1036         }
1037         db = op->o_bd;
1038         op->o_bd = &ov->db;
1039         rc = ov->db.bd_info->bi_op_bind(op, rs);
1040         op->o_bd = db;
1041         return rc;
1042 }
1043
1044 /*
1045 ** translucent_connection_destroy()
1046 **      pass disconnect notification to captive backend;
1047 **
1048 */
1049
1050 static int translucent_connection_destroy(BackendDB *be, Connection *conn) {
1051         slap_overinst *on = (slap_overinst *) be->bd_info;
1052         translucent_info *ov = on->on_bi.bi_private;
1053         int rc = 0;
1054
1055         Debug(LDAP_DEBUG_TRACE, "translucent_connection_destroy\n", 0, 0, 0);
1056
1057         rc = ov->db.bd_info->bi_connection_destroy(&ov->db, conn);
1058
1059         return(rc);
1060 }
1061
1062 /*
1063 ** translucent_db_config()
1064 **      pass config directives to captive backend;
1065 **      parse unrecognized directives ourselves;
1066 **
1067 */
1068
1069 static int translucent_db_config(
1070         BackendDB       *be,
1071         const char      *fname,
1072         int             lineno,
1073         int             argc,
1074         char            **argv
1075 )
1076 {
1077         slap_overinst *on = (slap_overinst *) be->bd_info;
1078         translucent_info *ov = on->on_bi.bi_private;
1079
1080         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_config: %s\n",
1081               argc ? argv[0] : "", 0, 0);
1082
1083         /* Something for the captive database? */
1084         if ( ov->db.bd_info && ov->db.bd_info->bi_db_config )
1085                 return ov->db.bd_info->bi_db_config( &ov->db, fname, lineno,
1086                         argc, argv );
1087         return SLAP_CONF_UNKNOWN;
1088 }
1089
1090 /*
1091 ** translucent_db_init()
1092 **      initialize the captive backend;
1093 **
1094 */
1095
1096 static int translucent_db_init(BackendDB *be, ConfigReply *cr) {
1097         slap_overinst *on = (slap_overinst *) be->bd_info;
1098         translucent_info *ov;
1099
1100         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_init\n", 0, 0, 0);
1101
1102         ov = ch_calloc(1, sizeof(translucent_info));
1103         on->on_bi.bi_private = ov;
1104         ov->db = *be;
1105         ov->db.be_private = NULL;
1106         ov->db.be_pcl_mutexp = &ov->db.be_pcl_mutex;
1107         ov->defer_db_open = 1;
1108
1109         if ( !backend_db_init( "ldap", &ov->db, -1, NULL )) {
1110                 Debug( LDAP_DEBUG_CONFIG, "translucent: unable to open captive back-ldap\n", 0, 0, 0);
1111                 return 1;
1112         }
1113         SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
1114         SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NOLASTMOD;
1115
1116         return 0;
1117 }
1118
1119 /*
1120 ** translucent_db_open()
1121 **      if the captive backend has an open() method, call it;
1122 **
1123 */
1124
1125 static int translucent_db_open(BackendDB *be, ConfigReply *cr) {
1126         slap_overinst *on = (slap_overinst *) be->bd_info;
1127         translucent_info *ov = on->on_bi.bi_private;
1128         int rc;
1129
1130         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_open\n", 0, 0, 0);
1131
1132         /* need to inherit something from the original database... */
1133         ov->db.be_def_limit = be->be_def_limit;
1134         ov->db.be_limits = be->be_limits;
1135         ov->db.be_acl = be->be_acl;
1136         ov->db.be_dfltaccess = be->be_dfltaccess;
1137
1138         if ( ov->defer_db_open )
1139                 return 0;
1140
1141         rc = backend_startup_one( &ov->db, NULL );
1142
1143         if(rc) Debug(LDAP_DEBUG_TRACE,
1144                 "translucent: bi_db_open() returned error %d\n", rc, 0, 0);
1145
1146         return(rc);
1147 }
1148
1149 /*
1150 ** translucent_db_close()
1151 **      if the captive backend has a close() method, call it
1152 **
1153 */
1154
1155 static int
1156 translucent_db_close( BackendDB *be, ConfigReply *cr )
1157 {
1158         slap_overinst *on = (slap_overinst *) be->bd_info;
1159         translucent_info *ov = on->on_bi.bi_private;
1160         int rc = 0;
1161
1162         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_close\n", 0, 0, 0);
1163
1164         if ( ov && ov->db.bd_info && ov->db.bd_info->bi_db_close ) {
1165                 rc = ov->db.bd_info->bi_db_close(&ov->db, NULL);
1166         }
1167
1168         return(rc);
1169 }
1170
1171 /*
1172 ** translucent_db_destroy()
1173 **      if the captive backend has a db_destroy() method, call it;
1174 **      free any config data
1175 **
1176 */
1177
1178 static int
1179 translucent_db_destroy( BackendDB *be, ConfigReply *cr )
1180 {
1181         slap_overinst *on = (slap_overinst *) be->bd_info;
1182         translucent_info *ov = on->on_bi.bi_private;
1183         int rc = 0;
1184
1185         Debug(LDAP_DEBUG_TRACE, "==> translucent_db_destroy\n", 0, 0, 0);
1186
1187         if ( ov ) {
1188                 if ( ov->remote )
1189                         anlist_free( ov->remote, 1, NULL );
1190                 if ( ov->local )
1191                         anlist_free( ov->local, 1, NULL );
1192                 if ( ov->db.be_private != NULL ) {
1193                         backend_stopdown_one( &ov->db );
1194                 }
1195
1196                 ch_free(ov);
1197                 on->on_bi.bi_private = NULL;
1198         }
1199
1200         return(rc);
1201 }
1202
1203 /*
1204 ** translucent_initialize()
1205 **      initialize the slap_overinst with our entry points;
1206 **
1207 */
1208
1209 int translucent_initialize() {
1210
1211         int rc;
1212
1213         Debug(LDAP_DEBUG_TRACE, "==> translucent_initialize\n", 0, 0, 0);
1214
1215         translucent.on_bi.bi_type       = "translucent";
1216         translucent.on_bi.bi_db_init    = translucent_db_init;
1217         translucent.on_bi.bi_db_config  = translucent_db_config;
1218         translucent.on_bi.bi_db_open    = translucent_db_open;
1219         translucent.on_bi.bi_db_close   = translucent_db_close;
1220         translucent.on_bi.bi_db_destroy = translucent_db_destroy;
1221         translucent.on_bi.bi_op_bind    = translucent_bind;
1222         translucent.on_bi.bi_op_add     = translucent_add;
1223         translucent.on_bi.bi_op_modify  = translucent_modify;
1224         translucent.on_bi.bi_op_modrdn  = translucent_modrdn;
1225         translucent.on_bi.bi_op_delete  = translucent_delete;
1226         translucent.on_bi.bi_op_search  = translucent_search;
1227         translucent.on_bi.bi_op_compare = translucent_compare;
1228         translucent.on_bi.bi_connection_destroy = translucent_connection_destroy;
1229
1230         translucent.on_bi.bi_cf_ocs = translucentocs;
1231         rc = config_register_schema ( translucentcfg, translucentocs );
1232         if ( rc ) return rc;
1233
1234         return(overlay_register(&translucent));
1235 }
1236
1237 #if SLAPD_OVER_TRANSLUCENT == SLAPD_MOD_DYNAMIC && defined(PIC)
1238 int init_module(int argc, char *argv[]) {
1239         return translucent_initialize();
1240 }
1241 #endif
1242
1243 #endif /* SLAPD_OVER_TRANSLUCENT */