git.sur5r.net Git - openldap/blob - contrib/slapd-modules/adremap/adremap.c

   1 /* adremap.c - Case-folding and DN-value remapping for AD proxies */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2015 Howard Chu <hyc@symas.com>.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15
  16 #include "portable.h"
  17
  18 /*
  19  * This file implements an overlay that performs two remapping functions
  20  * to allow older POSIX clients to use Microsoft AD:
  21  * 1: downcase the values of a configurable list of attributes
  22  * 2: dereference some DN-valued attributes and convert to their simple names
  23  *         e.g. generate memberUid based on member
  24  */
  25
  26 #ifdef SLAPD_OVER_ADREMAP
  27
  28 #include <ldap.h>
  29 #include "lutil.h"
  30 #include "slap.h"
  31 #include <ac/errno.h>
  32 #include <ac/time.h>
  33 #include <ac/string.h>
  34 #include <ac/ctype.h>
  35 #include "config.h"
  36
  37 typedef struct adremap_dnv {
  38         struct adremap_dnv *ad_next;
  39         AttributeDescription *ad_dnattr;        /* DN-valued attr to deref */
  40         AttributeDescription *ad_deref;         /* target attr's value to retrieve */
  41         AttributeDescription *ad_newattr;       /* New attr to collect new values */
  42         ObjectClass *ad_group;          /* group objectclass on target */
  43         ObjectClass *ad_mapgrp;         /* group objectclass to map */
  44         ObjectClass *ad_refgrp;         /* objectclass of target DN */
  45         struct berval ad_refbase;       /* base DN of target entries */
  46 } adremap_dnv;
  47 /* example: member uid memberUid */
  48
  49 typedef struct adremap_case {
  50         struct adremap_case *ac_next;
  51         AttributeDescription *ac_attr;
  52 } adremap_case;
  53
  54 /* Per-instance configuration information */
  55 typedef struct adremap_info {
  56         adremap_case *ai_case;  /* attrs to downcase */
  57         adremap_dnv *ai_dnv;    /* DN attrs to remap */
  58 } adremap_info;
  59
  60 enum {
  61         ADREMAP_CASE = 1,
  62         ADREMAP_DNV
  63 };
  64
  65 static ConfigDriver adremap_cf_case;
  66 static ConfigDriver adremap_cf_dnv;
  67
  68 /* configuration attribute and objectclass */
  69 static ConfigTable adremapcfg[] = {
  70         { "adremap-downcase", "attrs", 2, 0, 0,
  71           ARG_MAGIC|ADREMAP_CASE, adremap_cf_case,
  72           "( OLcfgCtAt:6.1 "
  73           "NAME 'olcADremapDowncase' "
  74           "DESC 'List of attributes to casefold to lower case' "
  75           "SYNTAX OMsDirectoryString )", NULL, NULL },
  76         { "adremap-dnmap", "dnattr targetattr newattr remoteOC localOC targetOC baseDN", 8, 8, 0,
  77           ARG_MAGIC|ADREMAP_DNV, adremap_cf_dnv,
  78           "( OLcfgCtAt:6.2 "
  79           "NAME 'olcADremapDNmap' "
  80           "DESC 'DN attr to map, attr from target to use, attr to generate, objectclass of remote"
  81            " group, objectclass mapped group, objectclass of target entry, base DN of target entry' "
  82           "SYNTAX OMsDirectoryString )", NULL, NULL },
  83         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
  84 };
  85
  86 static ConfigOCs adremapocs[] = {
  87         { "( OLcfgCtOc:6.1 "
  88           "NAME 'olcADremapConfig' "
  89           "DESC 'AD remap configuration' "
  90           "SUP olcOverlayConfig "
  91           "MAY ( olcADremapDowncase $ olcADremapDNmap ) )",
  92           Cft_Overlay, adremapcfg, NULL, NULL },
  93         { NULL, 0, NULL }
  94 };
  95
  96 static int
  97 adremap_cf_case(ConfigArgs *c)
  98 {
  99         BackendDB *be = (BackendDB *)c->be;
 100         slap_overinst *on = (slap_overinst *)c->bi;
 101         adremap_info *ai = on->on_bi.bi_private;
 102         adremap_case *ac, **a2;
 103         int rc = ARG_BAD_CONF;
 104
 105         switch(c->op) {
 106         case SLAP_CONFIG_EMIT:
 107                 for (ac = ai->ai_case; ac; ac=ac->ac_next) {
 108                         rc = value_add_one(&c->rvalue_vals, &ac->ac_attr->ad_cname);
 109                         if (rc) break;
 110                 }
 111                 break;
 112         case LDAP_MOD_DELETE:
 113                 if (c->valx < 0) {
 114                         for (ac = ai->ai_case; ac; ac=ai->ai_case) {
 115                                 ai->ai_case = ac->ac_next;
 116                                 ch_free(ac);
 117                         }
 118                 } else {
 119                         int i;
 120                         for (i=0, a2 = &ai->ai_case; i<c->valx; i++, a2 = &(*a2)->ac_next);
 121                         ac = *a2;
 122                         *a2 = ac->ac_next;
 123                         ch_free(ac);
 124                 }
 125                 rc = 0;
 126                 break;
 127         default: {
 128                 const char *text;
 129                 adremap_case ad;
 130                 ad.ac_attr = NULL;
 131                 rc = slap_str2ad(c->argv[1], &ad.ac_attr, &text);
 132                 if (rc) break;
 133                 for (a2 = &ai->ai_case; *a2; a2 = &(*a2)->ac_next);
 134                 ac = ch_malloc(sizeof(adremap_case));
 135                 ac->ac_next = NULL;
 136                 ac->ac_attr = ad.ac_attr;
 137                 *a2 = ac;
 138                 break;
 139                 }
 140         }
 141         return rc;
 142 }
 143
 144 static int
 145 adremap_cf_dnv(ConfigArgs *c)
 146 {
 147         BackendDB *be = (BackendDB *)c->be;
 148         slap_overinst *on = (slap_overinst *)c->bi;
 149         adremap_info *ai = on->on_bi.bi_private;
 150         adremap_dnv *ad, **a2;
 151         int rc = ARG_BAD_CONF;
 152
 153         switch(c->op) {
 154         case SLAP_CONFIG_EMIT:
 155                 for (ad = ai->ai_dnv; ad; ad=ad->ad_next) {
 156                         char *ptr;
 157                         struct berval bv;
 158                         bv.bv_len = ad->ad_dnattr->ad_cname.bv_len + ad->ad_deref->ad_cname.bv_len + ad->ad_newattr->ad_cname.bv_len + 2;
 159                         bv.bv_len += ad->ad_group->soc_cname.bv_len + ad->ad_mapgrp->soc_cname.bv_len + ad->ad_refgrp->soc_cname.bv_len + 3;
 160                         bv.bv_len += ad->ad_refbase.bv_len + 3;
 161                         bv.bv_val = ch_malloc(bv.bv_len + 1);
 162                         ptr = lutil_strcopy(bv.bv_val, ad->ad_dnattr->ad_cname.bv_val);
 163                         *ptr++ = ' ';
 164                         ptr = lutil_strcopy(ptr, ad->ad_deref->ad_cname.bv_val);
 165                         *ptr++ = ' ';
 166                         ptr = lutil_strcopy(ptr, ad->ad_newattr->ad_cname.bv_val);
 167                         *ptr++ = ' ';
 168                         ptr = lutil_strcopy(ptr, ad->ad_group->soc_cname.bv_val);
 169                         *ptr++ = ' ';
 170                         ptr = lutil_strcopy(ptr, ad->ad_mapgrp->soc_cname.bv_val);
 171                         *ptr++ = ' ';
 172                         ptr = lutil_strcopy(ptr, ad->ad_refgrp->soc_cname.bv_val);
 173                         *ptr++ = ' ';
 174                         *ptr++ = '"';
 175                         ptr = lutil_strcopy(ptr, ad->ad_refbase.bv_val);
 176                         *ptr++ = '"';
 177                         *ptr = '\0';
 178                         ber_bvarray_add(&c->rvalue_vals, &bv);
 179                 }
 180                 if (ai->ai_dnv) rc = 0;
 181                 break;
 182         case LDAP_MOD_DELETE:
 183                 if (c->valx < 0) {
 184                         for (ad = ai->ai_dnv; ad; ad=ai->ai_dnv) {
 185                                 ai->ai_dnv = ad->ad_next;
 186                                 ch_free(ad);
 187                         }
 188                 } else {
 189                         int i;
 190                         for (i=0, a2 = &ai->ai_dnv; i<c->valx; i++, a2 = &(*a2)->ad_next);
 191                         ad = *a2;
 192                         *a2 = ad->ad_next;
 193                         ch_free(ad);
 194                 }
 195                 rc = 0;
 196                 break;
 197         default: {
 198                 const char *text;
 199                 adremap_dnv av = {0};
 200                 struct berval dn;
 201                 rc = slap_str2ad(c->argv[1], &av.ad_dnattr, &text);
 202                 if (rc) break;
 203                 if (av.ad_dnattr->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName) {
 204                         rc = 1;
 205                         snprintf(c->cr_msg, sizeof(c->cr_msg), "<%s> not a DN-valued attribute",
 206                                 c->argv[0]);
 207                         Debug(LDAP_DEBUG_ANY, "%s: %s(%s)\n", c->log, c->cr_msg, c->argv[1]);
 208                         break;
 209                 }
 210                 rc = slap_str2ad(c->argv[2], &av.ad_deref, &text);
 211                 if (rc) break;
 212                 rc = slap_str2ad(c->argv[3], &av.ad_newattr, &text);
 213                 if (rc) break;
 214                 av.ad_group = oc_find(c->argv[4]);
 215                 if (!av.ad_group) {
 216                         rc = 1;
 217                         break;
 218                 }
 219                 av.ad_mapgrp = oc_find(c->argv[5]);
 220                 if (!av.ad_mapgrp) {
 221                         rc = 1;
 222                         break;
 223                 }
 224                 av.ad_refgrp = oc_find(c->argv[6]);
 225                 if (!av.ad_refgrp) {
 226                         rc = 1;
 227                         break;
 228                 }
 229                 ber_str2bv(c->argv[7], 0, 0, &dn);
 230                 rc = dnNormalize(0, NULL, NULL, &dn, &av.ad_refbase, NULL);
 231                 if (rc) break;
 232
 233                 for (a2 = &ai->ai_dnv; *a2; a2 = &(*a2)->ad_next);
 234                 ad = ch_malloc(sizeof(adremap_dnv));
 235                 ad->ad_next = NULL;
 236                 ad->ad_dnattr = av.ad_dnattr;
 237                 ad->ad_deref = av.ad_deref;
 238                 ad->ad_newattr = av.ad_newattr;
 239                 ad->ad_group = av.ad_group;
 240                 ad->ad_mapgrp = av.ad_mapgrp;
 241                 ad->ad_refgrp = av.ad_refgrp;
 242                 ad->ad_refbase = av.ad_refbase;
 243                 *a2 = ad;
 244                 break;
 245                 }
 246         }
 247         return rc;
 248 }
 249
 250 typedef struct adremap_ctx {
 251         slap_overinst *on;
 252         AttributeName an;
 253         AttributeDescription *ad;
 254         int an_swap;
 255 } adremap_ctx;
 256
 257 static int
 258 adremap_search_resp(
 259         Operation *op,
 260         SlapReply *rs
 261 )
 262 {
 263         adremap_ctx *ctx = op->o_callback->sc_private;
 264         slap_overinst *on = ctx->on;
 265         adremap_info *ai = on->on_bi.bi_private;
 266         adremap_case *ac;
 267         adremap_dnv *ad;
 268         Attribute *a;
 269         Entry *e;
 270
 271         if (rs->sr_type != REP_SEARCH)
 272                 return SLAP_CB_CONTINUE;
 273
 274         /* we munged the attr list, restore it to original */
 275         if (ctx->an_swap) {
 276                 int i;
 277                 ctx->an_swap = 0;
 278                 for (i=0; rs->sr_attrs[i].an_name.bv_val; i++) {
 279                         if (rs->sr_attrs[i].an_desc == ctx->ad) {
 280                                 rs->sr_attrs[i] = ctx->an;
 281                                 break;
 282                         }
 283                 }
 284                 /* Usually rs->sr_attrs is just op->ors_attrs, but
 285                  * overlays like rwm may make a new copy. Fix both
 286                  * if needed.
 287                  */
 288                 if (op->ors_attrs != rs->sr_attrs) {
 289                         for (i=0; op->ors_attrs[i].an_name.bv_val; i++) {
 290                                 if (op->ors_attrs[i].an_desc == ctx->ad) {
 291                                         op->ors_attrs[i] = ctx->an;
 292                                         break;
 293                                 }
 294                         }
 295                 }
 296         }
 297         e = rs->sr_entry;
 298         for (ac = ai->ai_case; ac; ac = ac->ac_next) {
 299                 a = attr_find(e->e_attrs, ac->ac_attr);
 300                 if (a) {
 301                         int i, j;
 302                         if (!(rs->sr_flags & REP_ENTRY_MODIFIABLE)) {
 303                                 e = entry_dup(e);
 304                                 rs_replace_entry(op, rs, on, e);
 305                                 rs->sr_flags |= REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
 306                                 a = attr_find(e->e_attrs, ac->ac_attr);
 307                         }
 308                         for (i=0; i<a->a_numvals; i++) {
 309                                 unsigned char *c = a->a_vals[i].bv_val;
 310                                 for (j=0; j<a->a_vals[i].bv_len; j++)
 311                                         if (isupper(c[j]))
 312                                                 c[j] = tolower(c[j]);
 313                         }
 314                 }
 315         }
 316         for (ad = ai->ai_dnv; ad; ad = ad->ad_next) {
 317                 a = attr_find(e->e_attrs, ad->ad_dnattr);
 318                 if (a) {
 319                         Entry *n;
 320                         Attribute *dr;
 321                         int i, rc;
 322                         if (!(rs->sr_flags & REP_ENTRY_MODIFIABLE)) {
 323                                 e = entry_dup(e);
 324                                 rs_replace_entry(op, rs, on, e);
 325                                 rs->sr_flags |= REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
 326                                 a = attr_find(e->e_attrs, ad->ad_dnattr);
 327                         }
 328                         for (i=0; i<a->a_numvals; i++) {
 329                                 n = NULL;
 330                                 rc = be_entry_get_rw(op, &a->a_nvals[i], NULL, ad->ad_deref, 0, &n);
 331                                 if (!rc && n) {
 332                                         dr = attr_find(n->e_attrs, ad->ad_deref);
 333                                         if (dr)
 334                                                 attr_merge_one(e, ad->ad_newattr, dr->a_vals, dr->a_nvals);
 335                                         be_entry_release_r(op, n);
 336                                 }
 337                         }
 338                 }
 339         }
 340         return SLAP_CB_CONTINUE;
 341 }
 342
 343 static int adremap_refsearch(
 344         Operation *op,
 345         SlapReply *rs
 346 )
 347 {
 348         if (rs->sr_type == REP_SEARCH) {
 349                 slap_callback *sc = op->o_callback;
 350                 struct berval *dn = sc->sc_private;
 351                 ber_dupbv_x(dn, &rs->sr_entry->e_nname, op->o_tmpmemctx);
 352                 return LDAP_SUCCESS;
 353         }
 354         return rs->sr_err;
 355 }
 356
 357 static adremap_dnv *adremap_filter(
 358         Operation *op,
 359         adremap_info *ai
 360 )
 361 {
 362         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
 363         Filter *f = op->ors_filter;
 364         adremap_dnv *ad = NULL;
 365         int fextra = 0;
 366
 367         /* Do we need to munge the filter? First see if it's of
 368          * the form (&(objectClass=<mapgrp>)...)
 369          * or of (&(&(objectClass=<mapgrp>)...)...)
 370          */
 371         if (f->f_choice == LDAP_FILTER_AND && f->f_and) {
 372                 struct berval bv;
 373                 if (f->f_and->f_choice == LDAP_FILTER_EQUALITY &&
 374                         f->f_and->f_av_desc == slap_schema.si_ad_objectClass) {
 375                         bv = f->f_and->f_av_value;
 376                 } else if (f->f_and->f_choice == LDAP_FILTER_AND &&
 377                         f->f_and->f_and &&
 378                         f->f_and->f_and->f_choice == LDAP_FILTER_EQUALITY) {
 379                         fextra = 1;
 380                         bv = f->f_and->f_and->f_av_value;
 381                 }
 382                 for (ad = ai->ai_dnv; ad; ad = ad->ad_next) {
 383                         if (!ber_bvstrcasecmp( &bv, &ad->ad_mapgrp->soc_cname )) {
 384                         /* Now check to see if next element is (<newattr>=foo) */
 385                                 Filter *fn = f->f_and->f_next, *fnew;
 386                                 if (fn && fn->f_choice == LDAP_FILTER_EQUALITY &&
 387                                         fn->f_av_desc == ad->ad_newattr) {
 388                                         Filter fr[3];
 389                                         AttributeAssertion aa[2] = {0};
 390                                         Operation op2;
 391                                         slap_callback cb = {0};
 392                                         SlapReply rs = {REP_RESULT};
 393                                         struct berval dn = BER_BVNULL;
 394
 395                                         /* It's a match, setup a search with filter
 396                                          * (&(objectclass=<refgrp>)(<deref>=foo))
 397                                          */
 398                                         fr[0].f_choice = LDAP_FILTER_AND;
 399                                         fr[0].f_and = &fr[1];
 400                                         fr[0].f_next = NULL;
 401
 402                                         fr[1].f_choice = LDAP_FILTER_EQUALITY;
 403                                         fr[1].f_ava = &aa[0];
 404                                         fr[1].f_av_desc = slap_schema.si_ad_objectClass;
 405                                         fr[1].f_av_value = ad->ad_refgrp->soc_cname;
 406                                         fr[1].f_next = &fr[2];
 407
 408                                         fr[2].f_choice = LDAP_FILTER_EQUALITY;
 409                                         fr[2].f_ava = &aa[1];
 410                                         fr[2].f_av_desc = ad->ad_deref;
 411                                         fr[2].f_av_value = fn->f_av_value;
 412                                         fr[2].f_next = NULL;
 413
 414                                         /* Search with this filter to retrieve target DN */
 415                                         op2 = *op;
 416                                         op2.o_callback = &cb;
 417                                         cb.sc_response = adremap_refsearch;
 418                                         cb.sc_private = &dn;
 419                                         op2.o_req_dn = ad->ad_refbase;
 420                                         op2.o_req_ndn = ad->ad_refbase;
 421                                         op2.ors_filter = fr;
 422                                         filter2bv_x(op, fr, &op2.ors_filterstr);
 423                                         op2.ors_deref = LDAP_DEREF_NEVER;
 424                                         op2.ors_slimit = 1;
 425                                         op2.ors_tlimit = SLAP_NO_LIMIT;
 426                                         op2.ors_attrs = slap_anlist_no_attrs;
 427                                         op2.ors_attrsonly = 1;
 428                                         op2.o_no_schema_check = 1;
 429                                         op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 430                                         op2.o_bd->be_search(&op2, &rs);
 431                                         op2.o_bd->bd_info = (BackendInfo *)on;
 432                                         op->o_tmpfree(op2.ors_filterstr.bv_val, op->o_tmpmemctx);
 433
 434                                         if (!dn.bv_len) {       /* no match was found */
 435                                                 ad = NULL;
 436                                                 break;
 437                                         }
 438
 439                                         if (rs.sr_err) {        /* sizelimit exceeded, etc.: invalid name */
 440                                                 op->o_tmpfree(dn.bv_val, op->o_tmpmemctx);
 441                                                 ad = NULL;
 442                                                 break;
 443                                         }
 444
 445                                         /* Build a new filter of form
 446                                          * (&(objectclass=<group>)(<dnattr>=foo-DN)...)
 447                                          */
 448                                         f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 449                                         f->f_choice = LDAP_FILTER_AND;
 450                                         fnew = f;
 451                                         f->f_next = NULL;
 452
 453                                         f->f_and = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 454                                         f = f->f_and;
 455                                         f->f_choice = LDAP_FILTER_EQUALITY;
 456                                         f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
 457                                         f->f_av_desc = slap_schema.si_ad_objectClass;
 458                                         ber_dupbv_x(&f->f_av_value, &ad->ad_group->soc_cname, op->o_tmpmemctx);
 459
 460                                         f->f_next = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 461                                         f = f->f_next;
 462                                         f->f_choice = LDAP_FILTER_EQUALITY;
 463                                         f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
 464                                         f->f_av_desc = ad->ad_dnattr;
 465                                         f->f_av_value = dn;
 466                                 } else {
 467                                         /* Build a new filter of form
 468                                          * (&(objectclass=<group>)(...))
 469                                          */
 470                                         fn = f->f_and;
 471                                         f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 472                                         f->f_choice = LDAP_FILTER_AND;
 473                                         fnew = f;
 474                                         f->f_next = NULL;
 475
 476                                         f->f_and = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 477                                         f = f->f_and;
 478                                         f->f_choice = LDAP_FILTER_EQUALITY;
 479                                         f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
 480                                         f->f_av_desc = slap_schema.si_ad_objectClass;
 481                                         ber_dupbv_x(&f->f_av_value, &ad->ad_group->soc_cname, op->o_tmpmemctx);
 482                                 }
 483                                 f->f_next = fn->f_next;
 484                                 fn->f_next = NULL;
 485                                 if (fextra) {
 486                                         f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
 487                                         f->f_choice = LDAP_FILTER_AND;
 488                                         f->f_and = fnew->f_and;
 489                                         f->f_next = f->f_and->f_next;
 490                                         f->f_and->f_next = op->ors_filter->f_and->f_and->f_next;
 491                                         op->ors_filter->f_and->f_and->f_next = NULL;
 492                                         fnew->f_and = f;
 493                                 }
 494                                 filter_free_x(op, op->ors_filter, 1);
 495                                 op->o_tmpfree(op->ors_filterstr.bv_val, op->o_tmpmemctx);
 496                                 op->ors_filter = fnew;
 497                                 filter2bv_x(op, op->ors_filter, &op->ors_filterstr);
 498                                 break;
 499                         }
 500                 }
 501         }
 502         return ad;
 503 }
 504
 505 static int
 506 adremap_search(
 507         Operation *op,
 508         SlapReply *rs
 509 )
 510 {
 511         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
 512         adremap_info *ai = (adremap_info *) on->on_bi.bi_private;
 513         adremap_ctx *ctx;
 514         adremap_dnv *ad = NULL;
 515         slap_callback *cb;
 516
 517         /* Is this our own internal search? Ignore it */
 518         if (op->o_no_schema_check)
 519                 return SLAP_CB_CONTINUE;
 520
 521         if (ai->ai_dnv)
 522                 /* check for filter match, fallthru if none */
 523                 ad = adremap_filter(op, ai);
 524
 525         cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(adremap_ctx), op->o_tmpmemctx);
 526         cb->sc_response = adremap_search_resp;
 527         cb->sc_private = cb+1;
 528         cb->sc_next = op->o_callback;
 529         op->o_callback = cb;
 530         ctx = cb->sc_private;
 531         ctx->on = on;
 532         if (ad && op->ors_attrs) {      /* see if we need to remap a search attr */
 533                 int i;
 534                 for (i=0; op->ors_attrs[i].an_name.bv_val; i++) {
 535                         if (op->ors_attrs[i].an_desc == ad->ad_newattr) {
 536                                 ctx->an_swap = 1;
 537                                 ctx->ad = ad->ad_dnattr;
 538                                 ctx->an = op->ors_attrs[i];
 539                                 op->ors_attrs[i].an_desc = ad->ad_dnattr;
 540                                 op->ors_attrs[i].an_name = ad->ad_dnattr->ad_cname;
 541                                 break;
 542                         }
 543                 }
 544         }
 545         return SLAP_CB_CONTINUE;
 546 }
 547
 548 static int
 549 adremap_db_init(
 550         BackendDB *be,
 551         ConfigReply *cr
 552 )
 553 {
 554         slap_overinst *on = (slap_overinst *) be->bd_info;
 555
 556         /* initialize private structure to store configuration */
 557         on->on_bi.bi_private = ch_calloc( 1, sizeof(adremap_info) );
 558
 559         return 0;
 560 }
 561
 562 static int
 563 adremap_db_destroy(
 564         BackendDB *be,
 565         ConfigReply *cr
 566 )
 567 {
 568         slap_overinst *on = (slap_overinst *) be->bd_info;
 569         adremap_info *ai = (adremap_info *) on->on_bi.bi_private;
 570         adremap_case *ac;
 571         adremap_dnv *ad;
 572
 573         /* free config */
 574         for (ac = ai->ai_case; ac; ac = ai->ai_case) {
 575                 ai->ai_case = ac->ac_next;
 576                 ch_free(ac);
 577         }
 578         for (ad = ai->ai_dnv; ad; ad = ai->ai_dnv) {
 579                 ai->ai_dnv = ad->ad_next;
 580                 ch_free(ad);
 581         }
 582         free( ai );
 583
 584         return 0;
 585 }
 586
 587 static slap_overinst adremap;
 588
 589 int adremap_initialize()
 590 {
 591         int i, code;
 592
 593         adremap.on_bi.bi_type = "adremap";
 594         adremap.on_bi.bi_db_init = adremap_db_init;
 595         adremap.on_bi.bi_db_destroy = adremap_db_destroy;
 596         adremap.on_bi.bi_op_search = adremap_search;
 597
 598         /* register configuration directives */
 599         adremap.on_bi.bi_cf_ocs = adremapocs;
 600         code = config_register_schema( adremapcfg, adremapocs );
 601         if ( code ) return code;
 602
 603         return overlay_register( &adremap );
 604 }
 605
 606 #if SLAPD_OVER_ADREMAP == SLAPD_MOD_DYNAMIC
 607 int init_module(int argc, char *argv[]) {
 608         return adremap_initialize();
 609 }
 610 #endif
 611
 612 #endif  /* defined(SLAPD_OVER_ADREMAP) */