1 /* translucent.c - translucent proxy module */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2014 The OpenLDAP Foundation.
6 * Portions Copyright 2005 Symas Corporation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
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>.
18 * This work was initially developed by Symas Corp. for inclusion in
19 * OpenLDAP Software. This work was sponsored by Hewlett-Packard.
24 #ifdef SLAPD_OVER_TRANSLUCENT
28 #include <ac/string.h>
29 #include <ac/socket.h>
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 */
48 static ConfigLDAPadd translucent_ldadd;
49 static ConfigCfAdd translucent_cfadd;
51 static ConfigDriver translucent_cf_gen;
58 static ConfigTable translucentcfg[] = {
59 { "translucent_strict", "on|off", 1, 2, 0,
60 ARG_ON_OFF|ARG_OFFSET,
61 (void *)offsetof(translucent_info, strict),
62 "( OLcfgOvAt:14.1 NAME 'olcTranslucentStrict' "
63 "DESC 'Reveal attribute deletion constraint violations' "
64 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
65 { "translucent_no_glue", "on|off", 1, 2, 0,
66 ARG_ON_OFF|ARG_OFFSET,
67 (void *)offsetof(translucent_info, no_glue),
68 "( OLcfgOvAt:14.2 NAME 'olcTranslucentNoGlue' "
69 "DESC 'Disable automatic glue records for ADD and MODRDN' "
70 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
71 { "translucent_local", "attr[,attr...]", 1, 2, 0,
72 ARG_MAGIC|TRANS_LOCAL,
74 "( OLcfgOvAt:14.3 NAME 'olcTranslucentLocal' "
75 "DESC 'Attributes to use in local search filter' "
76 "SYNTAX OMsDirectoryString )", NULL, NULL },
77 { "translucent_remote", "attr[,attr...]", 1, 2, 0,
78 ARG_MAGIC|TRANS_REMOTE,
80 "( OLcfgOvAt:14.4 NAME 'olcTranslucentRemote' "
81 "DESC 'Attributes to use in remote search filter' "
82 "SYNTAX OMsDirectoryString )", NULL, NULL },
83 { "translucent_bind_local", "on|off", 1, 2, 0,
84 ARG_ON_OFF|ARG_OFFSET,
85 (void *)offsetof(translucent_info, bind_local),
86 "( OLcfgOvAt:14.5 NAME 'olcTranslucentBindLocal' "
87 "DESC 'Enable local bind' "
88 "SYNTAX OMsBoolean SINGLE-VALUE)", NULL, NULL },
89 { "translucent_pwmod_local", "on|off", 1, 2, 0,
90 ARG_ON_OFF|ARG_OFFSET,
91 (void *)offsetof(translucent_info, pwmod_local),
92 "( OLcfgOvAt:14.6 NAME 'olcTranslucentPwModLocal' "
93 "DESC 'Enable local RFC 3062 Password Modify extended operation' "
94 "SYNTAX OMsBoolean SINGLE-VALUE)", NULL, NULL },
95 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
98 static ConfigOCs translucentocs[] = {
100 "NAME 'olcTranslucentConfig' "
101 "DESC 'Translucent configuration' "
102 "SUP olcOverlayConfig "
103 "MAY ( olcTranslucentStrict $ olcTranslucentNoGlue $"
104 " olcTranslucentLocal $ olcTranslucentRemote $"
105 " olcTranslucentBindLocal $ olcTranslucentPwModLocal ) )",
106 Cft_Overlay, translucentcfg, NULL, translucent_cfadd },
107 { "( OLcfgOvOc:14.2 "
108 "NAME 'olcTranslucentDatabase' "
109 "DESC 'Translucent target database configuration' "
110 "AUXILIARY )", Cft_Misc, olcDatabaseDummy, translucent_ldadd },
113 /* for translucent_init() */
116 translucent_ldadd_cleanup( ConfigArgs *ca )
118 slap_overinst *on = ca->ca_private;
119 translucent_info *ov = on->on_bi.bi_private;
121 ov->defer_db_open = 0;
122 return backend_startup_one( ca->be, &ca->reply );
126 translucent_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
129 translucent_info *ov;
131 Debug(LDAP_DEBUG_TRACE, "==> translucent_ldadd\n", 0, 0, 0);
133 if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
134 cei->ce_bi->bi_cf_ocs != translucentocs )
135 return LDAP_CONSTRAINT_VIOLATION;
137 on = (slap_overinst *)cei->ce_bi;
138 ov = on->on_bi.bi_private;
141 if ( CONFIG_ONLINE_ADD( ca ))
142 ca->cleanup = translucent_ldadd_cleanup;
144 ov->defer_db_open = 0;
150 translucent_cfadd( Operation *op, SlapReply *rs, Entry *e, ConfigArgs *ca )
152 CfEntryInfo *cei = e->e_private;
153 slap_overinst *on = (slap_overinst *)cei->ce_bi;
154 translucent_info *ov = on->on_bi.bi_private;
157 Debug(LDAP_DEBUG_TRACE, "==> translucent_cfadd\n", 0, 0, 0);
159 /* FIXME: should not hardcode "olcDatabase" here */
160 bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
161 "olcDatabase=" SLAP_X_ORDERED_FMT "%s",
162 0, ov->db.bd_info->bi_type );
163 if ( bv.bv_len >= sizeof( ca->cr_msg ) ) {
166 bv.bv_val = ca->cr_msg;
168 ov->defer_db_open = 0;
170 /* We can only create this entry if the database is table-driven
172 if ( ov->db.bd_info->bi_cf_ocs )
173 config_build_entry( op, rs, cei, ca, &bv,
174 ov->db.bd_info->bi_cf_ocs,
175 &translucentocs[1] );
181 translucent_cf_gen( ConfigArgs *c )
183 slap_overinst *on = (slap_overinst *)c->bi;
184 translucent_info *ov = on->on_bi.bi_private;
185 AttributeName **an, *a2;
188 if ( c->type == TRANS_LOCAL )
193 if ( c->op == SLAP_CONFIG_EMIT ) {
196 for ( i = 0; !BER_BVISNULL(&(*an)[i].an_name); i++ ) {
197 value_add_one( &c->rvalue_vals, &(*an)[i].an_name );
200 } else if ( c->op == LDAP_MOD_DELETE ) {
202 anlist_free( *an, 1, NULL );
206 ch_free( (*an)[i].an_name.bv_val );
208 (*an)[i] = (*an)[i+1];
210 } while ( !BER_BVISNULL( &(*an)[i].an_name ));
214 a2 = str2anlist( *an, c->argv[1], "," );
216 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse attribute %s",
217 c->argv[0], c->argv[1] );
218 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
219 "%s: %s\n", c->log, c->cr_msg, 0 );
226 static slap_overinst translucent;
230 ** call syncrepl_add_glue() with the parent suffix;
234 static struct berval glue[] = { BER_BVC("top"), BER_BVC("glue"), BER_BVNULL };
236 void glue_parent(Operation *op) {
238 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
239 struct berval ndn = BER_BVNULL;
244 dnParent( &op->o_req_ndn, &pdn );
245 ber_dupbv_x( &ndn, &pdn, op->o_tmpmemctx );
247 Debug(LDAP_DEBUG_TRACE, "=> glue_parent: fabricating glue for <%s>\n", ndn.bv_val, 0, 0);
251 ber_dupbv(&e->e_name, &ndn);
252 ber_dupbv(&e->e_nname, &ndn);
254 a = attr_alloc( slap_schema.si_ad_objectClass );
256 a->a_vals = ch_malloc(sizeof(struct berval) * 3);
257 ber_dupbv(&a->a_vals[0], &glue[0]);
258 ber_dupbv(&a->a_vals[1], &glue[1]);
259 ber_dupbv(&a->a_vals[2], &glue[2]);
260 a->a_nvals = a->a_vals;
261 a->a_next = e->e_attrs;
264 a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
266 a->a_vals = ch_malloc(sizeof(struct berval) * 2);
267 ber_dupbv(&a->a_vals[0], &glue[1]);
268 ber_dupbv(&a->a_vals[1], &glue[2]);
269 a->a_nvals = a->a_vals;
270 a->a_next = e->e_attrs;
277 nop.o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
278 syncrepl_add_glue(&nop, e);
279 nop.o_bd->bd_info = (BackendInfo *) on;
281 op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
288 ** free only the Attribute*, not the contents;
291 void free_attr_chain(Attribute *b) {
293 for(a=b; a; a=a->a_next) {
303 ** if not bound as root, send ACCESS error;
304 ** if glue, glue_parent();
309 static int translucent_add(Operation *op, SlapReply *rs) {
310 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
311 translucent_info *ov = on->on_bi.bi_private;
312 Debug(LDAP_DEBUG_TRACE, "==> translucent_add: %s\n",
313 op->o_req_dn.bv_val, 0, 0);
315 op->o_bd->bd_info = (BackendInfo *) on->on_info;
316 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
317 "user modification of overlay database not permitted");
318 op->o_bd->bd_info = (BackendInfo *) on;
321 if(!ov->no_glue) glue_parent(op);
322 return(SLAP_CB_CONTINUE);
326 ** translucent_modrdn()
327 ** if not bound as root, send ACCESS error;
328 ** if !glue, glue_parent();
329 ** else return CONTINUE;
333 static int translucent_modrdn(Operation *op, SlapReply *rs) {
334 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
335 translucent_info *ov = on->on_bi.bi_private;
336 Debug(LDAP_DEBUG_TRACE, "==> translucent_modrdn: %s -> %s\n",
337 op->o_req_dn.bv_val, op->orr_newrdn.bv_val, 0);
339 op->o_bd->bd_info = (BackendInfo *) on->on_info;
340 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
341 "user modification of overlay database not permitted");
342 op->o_bd->bd_info = (BackendInfo *) on;
346 op->o_tag = LDAP_REQ_ADD;
348 op->o_tag = LDAP_REQ_MODRDN;
350 return(SLAP_CB_CONTINUE);
354 ** translucent_delete()
355 ** if not bound as root, send ACCESS error;
356 ** else return CONTINUE;
360 static int translucent_delete(Operation *op, SlapReply *rs) {
361 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
362 Debug(LDAP_DEBUG_TRACE, "==> translucent_delete: %s\n",
363 op->o_req_dn.bv_val, 0, 0);
365 op->o_bd->bd_info = (BackendInfo *) on->on_info;
366 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
367 "user modification of overlay database not permitted");
368 op->o_bd->bd_info = (BackendInfo *) on;
371 return(SLAP_CB_CONTINUE);
375 translucent_tag_cb( Operation *op, SlapReply *rs )
377 op->o_tag = LDAP_REQ_MODIFY;
378 op->orm_modlist = op->o_callback->sc_private;
379 rs->sr_tag = slap_req2res( op->o_tag );
381 return SLAP_CB_CONTINUE;
385 ** translucent_modify()
386 ** modify in local backend if exists in both;
387 ** otherwise, add to local backend;
388 ** fail if not defined in captive backend;
392 static int translucent_modify(Operation *op, SlapReply *rs) {
393 SlapReply nrs = { REP_RESULT };
395 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
396 translucent_info *ov = on->on_bi.bi_private;
397 Entry *e = NULL, *re = NULL;
399 Modifications *m, **mm;
401 int del, rc, erc = 0;
402 slap_callback cb = { 0 };
404 Debug(LDAP_DEBUG_TRACE, "==> translucent_modify: %s\n",
405 op->o_req_dn.bv_val, 0, 0);
407 if(ov->defer_db_open) {
408 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
409 "remote DB not available");
413 ** fetch entry from the captive backend;
414 ** if it did not exist, fail;
415 ** release it, if captive backend supports this;
421 ov->db.be_acl = op->o_bd->be_acl;
422 rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
423 if(rc != LDAP_SUCCESS || re == NULL ) {
424 send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
425 "attempt to modify nonexistent local record");
430 ** fetch entry from local backend;
432 ** foreach Modification:
433 ** if attr not present in local:
434 ** if Mod == LDAP_MOD_DELETE:
435 ** if remote attr not present, return NO_SUCH;
436 ** if remote attr present, drop this Mod;
437 ** else force this Mod to LDAP_MOD_ADD;
442 op->o_bd->bd_info = (BackendInfo *) on->on_info;
443 rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
444 op->o_bd->bd_info = (BackendInfo *) on;
446 if(e && rc == LDAP_SUCCESS) {
447 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: found local entry\n", 0, 0, 0);
448 for(mm = &op->orm_modlist; *mm; ) {
450 for(a = e->e_attrs; a; a = a->a_next)
451 if(a->a_desc == m->sml_desc) break;
454 continue; /* found local attr */
456 if(m->sml_op == LDAP_MOD_DELETE) {
457 for(a = re->e_attrs; a; a = a->a_next)
458 if(a->a_desc == m->sml_desc) break;
459 /* not found remote attr */
461 erc = LDAP_NO_SUCH_ATTRIBUTE;
465 erc = LDAP_CONSTRAINT_VIOLATION;
468 Debug(LDAP_DEBUG_TRACE,
469 "=> translucent_modify: silently dropping delete: %s\n",
470 m->sml_desc->ad_cname.bv_val, 0, 0);
473 slap_mods_free(m, 1);
476 m->sml_op = LDAP_MOD_ADD;
479 erc = SLAP_CB_CONTINUE;
482 if(ov->db.bd_info->bi_entry_release_rw) {
484 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
489 op->o_bd->bd_info = (BackendInfo *) on->on_info;
490 be_entry_release_r(op, e);
491 op->o_bd->bd_info = (BackendInfo *) on;
492 if(erc == SLAP_CB_CONTINUE) {
495 send_ldap_error(op, rs, erc,
496 "attempt to delete nonexistent attribute");
501 /* don't leak remote entry copy */
503 if(ov->db.bd_info->bi_entry_release_rw) {
505 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
511 ** foreach Modification:
512 ** if MOD_ADD or MOD_REPLACE, add Attribute;
513 ** if no Modifications were suitable:
514 ** if strict, throw CONSTRAINT_VIOLATION;
515 ** else, return early SUCCESS;
516 ** fabricate Entry with new Attribute chain;
517 ** glue_parent() for this Entry;
518 ** call bi_op_add() in local backend;
522 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: fabricating local add\n", 0, 0, 0);
524 for(del = 0, ax = NULL, m = op->orm_modlist; m; m = m->sml_next) {
526 if(((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_ADD) &&
527 ((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)) {
528 Debug(LDAP_DEBUG_ANY,
529 "=> translucent_modify: silently dropped modification(%d): %s\n",
530 m->sml_op, m->sml_desc->ad_cname.bv_val, 0);
531 if((m->sml_op & LDAP_MOD_OP) == LDAP_MOD_DELETE) del++;
534 atmp.a_desc = m->sml_desc;
535 atmp.a_vals = m->sml_values;
536 atmp.a_nvals = m->sml_nvalues ? m->sml_nvalues : atmp.a_vals;
537 atmp.a_numvals = m->sml_numvals;
539 a = attr_dup( &atmp );
544 if(del && ov->strict) {
546 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
547 "attempt to delete attributes from local database");
553 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
554 "modification contained other than ADD or REPLACE");
557 /* rs->sr_text = "no valid modification found"; */
558 rs->sr_err = LDAP_SUCCESS;
559 send_ldap_result(op, rs);
564 ber_dupbv( &e->e_name, &op->o_req_dn );
565 ber_dupbv( &e->e_nname, &op->o_req_ndn );
568 op->o_tag = LDAP_REQ_ADD;
569 cb.sc_response = translucent_tag_cb;
570 cb.sc_private = op->orm_modlist;
575 cb.sc_next = op->o_callback;
576 op->o_callback = &cb;
577 rc = on->on_info->oi_orig->bi_op_add(op, &nrs);
578 if ( op->ora_e == e )
580 op->o_callback = cb.sc_next;
585 static int translucent_compare(Operation *op, SlapReply *rs) {
586 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
587 translucent_info *ov = on->on_bi.bi_private;
588 AttributeAssertion *ava = op->orc_ava;
593 Debug(LDAP_DEBUG_TRACE, "==> translucent_compare: <%s> %s:%s\n",
594 op->o_req_dn.bv_val, ava->aa_desc->ad_cname.bv_val, ava->aa_value.bv_val);
597 ** if the local backend has an entry for this attribute:
598 ** CONTINUE and let it do the compare;
601 rc = overlay_entry_get_ov(op, &op->o_req_ndn, NULL, ava->aa_desc, 0, &e, on);
602 if(rc == LDAP_SUCCESS && e) {
603 overlay_entry_release_ov(op, e, 0, on);
604 return(SLAP_CB_CONTINUE);
607 if(ov->defer_db_open) {
608 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
609 "remote DB not available");
613 ** call compare() in the captive backend;
614 ** return the result;
619 ov->db.be_acl = op->o_bd->be_acl;
620 rc = ov->db.bd_info->bi_op_compare(op, rs);
626 static int translucent_pwmod(Operation *op, SlapReply *rs) {
627 SlapReply nrs = { REP_RESULT };
630 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
631 translucent_info *ov = on->on_bi.bi_private;
632 Entry *e = NULL, *re = NULL;
635 slap_callback cb = { 0 };
637 if (!ov->pwmod_local) {
638 rs->sr_err = LDAP_CONSTRAINT_VIOLATION,
639 rs->sr_text = "attempt to modify password in local database";
644 ** fetch entry from the captive backend;
645 ** if it did not exist, fail;
646 ** release it, if captive backend supports this;
651 ov->db.be_acl = op->o_bd->be_acl;
652 rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
653 if(rc != LDAP_SUCCESS || re == NULL ) {
654 send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
655 "attempt to modify nonexistent local record");
660 ** fetch entry from local backend;
665 op->o_bd->bd_info = (BackendInfo *) on->on_info;
666 rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
667 op->o_bd->bd_info = (BackendInfo *) on;
669 if(e && rc == LDAP_SUCCESS) {
671 if(ov->db.bd_info->bi_entry_release_rw) {
673 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
679 op->o_bd->bd_info = (BackendInfo *) on->on_info;
680 be_entry_release_r(op, e);
681 op->o_bd->bd_info = (BackendInfo *) on;
682 return SLAP_CB_CONTINUE;
685 /* don't leak remote entry copy */
687 if(ov->db.bd_info->bi_entry_release_rw) {
689 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
696 ** glue_parent() for this Entry;
697 ** call bi_op_add() in local backend;
701 ber_dupbv( &e->e_name, &op->o_req_dn );
702 ber_dupbv( &e->e_nname, &op->o_req_ndn );
706 nop.o_tag = LDAP_REQ_ADD;
707 cb.sc_response = slap_null_cb;
712 nop.o_callback = &cb;
713 rc = on->on_info->oi_orig->bi_op_add(&nop, &nrs);
714 if ( nop.ora_e == e ) {
718 if ( rc == LDAP_SUCCESS ) {
719 return SLAP_CB_CONTINUE;
725 static int translucent_exop(Operation *op, SlapReply *rs) {
726 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
727 translucent_info *ov = on->on_bi.bi_private;
728 const struct berval bv_exop_pwmod = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
730 Debug(LDAP_DEBUG_TRACE, "==> translucent_exop: %s\n",
731 op->o_req_dn.bv_val, 0, 0);
733 if(ov->defer_db_open) {
734 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
735 "remote DB not available");
739 if ( bvmatch( &bv_exop_pwmod, &op->ore_reqoid ) ) {
740 return translucent_pwmod( op, rs );
743 return SLAP_CB_CONTINUE;
747 ** translucent_search_cb()
748 ** merge local data with remote data
751 ** 1: remote search, no local filter
752 ** merge data and send immediately
753 ** 2: remote search, with local filter
754 ** merge data and save
755 ** 3: local search, no remote filter
756 ** merge data and send immediately
757 ** 4: local search, with remote filter
758 ** check list, merge, send, delete
765 typedef struct trans_ctx {
772 AttributeName *attrs;
775 static int translucent_search_cb(Operation *op, SlapReply *rs) {
779 translucent_info *ov;
781 Attribute *a, *ax, *an, *as = NULL;
785 tc = op->o_callback->sc_private;
787 /* Don't let the op complete while we're gathering data */
788 if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
791 if(!op || !rs || rs->sr_type != REP_SEARCH || !rs->sr_entry)
792 return(SLAP_CB_CONTINUE);
794 Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
795 rs->sr_entry->e_name.bv_val, 0, 0);
797 op->ors_slimit = tc->slimit + ( tc->slimit > 0 ? 1 : 0 );
798 if ( op->ors_attrs == slap_anlist_all_attributes ) {
799 op->ors_attrs = tc->attrs;
800 rs->sr_attrs = tc->attrs;
801 rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
805 ov = on->on_bi.bi_private;
810 /* If we have local, get remote */
811 if ( tc->step & LCL_SIDE ) {
813 /* If entry is already on list, use it */
814 if ( tc->step & USE_LIST ) {
815 re = tavl_delete( &tc->list, le, entry_dn_cmp );
817 rs_flush_entry( op, rs, on );
818 rc = test_filter( op, re, tc->orig );
819 if ( rc == LDAP_COMPARE_TRUE ) {
820 rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
823 if ( tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
824 return LDAP_SIZELIMIT_EXCEEDED;
827 return SLAP_CB_CONTINUE;
836 rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
837 if ( rc == LDAP_SUCCESS && re ) {
838 Entry *tmp = entry_dup( re );
839 be_entry_release_r( op, re );
844 /* Else we have remote, get local */
847 rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
848 if ( rc == LDAP_SUCCESS && le ) {
849 re = entry_dup( rs->sr_entry );
850 rs_flush_entry( op, rs, on );
857 ** if we got remote and local entry:
858 ** foreach local attr:
859 ** foreach remote attr:
860 ** if match, remote attr with local attr;
861 ** if new local, add to list;
862 ** append new local attrs to remote;
867 for(ax = le->e_attrs; ax; ax = ax->a_next) {
868 for(a = re->e_attrs; a; a = a->a_next) {
869 if(a->a_desc == ax->a_desc) {
871 if(a->a_vals != a->a_nvals)
872 ber_bvarray_free(a->a_nvals);
873 ber_bvarray_free(a->a_vals);
874 ber_bvarray_dup_x( &a->a_vals, ax->a_vals, NULL );
875 if ( ax->a_vals == ax->a_nvals ) {
876 a->a_nvals = a->a_vals;
878 ber_bvarray_dup_x( &a->a_nvals, ax->a_nvals, NULL );
888 /* Dispose of local entry */
889 if ( tc->step & LCL_SIDE ) {
890 rs_flush_entry(op, rs, on);
892 overlay_entry_release_ov(op, le, 0, on);
895 /* literally append, so locals are always last */
898 for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
904 /* If both filters, save entry for later */
905 if ( tc->step == (USE_LIST|RMT_SIDE) ) {
906 tavl_insert( &tc->list, re, entry_dn_cmp, avl_dup_error );
912 rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
914 rc = test_filter( op, rs->sr_entry, tc->orig );
915 if ( rc == LDAP_COMPARE_TRUE ) {
916 rc = SLAP_CB_CONTINUE;
921 rc = SLAP_CB_CONTINUE;
925 /* Only a local entry: remote was deleted
926 * Ought to delete the local too...
929 } else if ( tc->step & USE_LIST ) {
930 /* Only a remote entry, but both filters:
931 * Test the complete filter
933 rc = test_filter( op, rs->sr_entry, tc->orig );
934 if ( rc == LDAP_COMPARE_TRUE ) {
935 rc = SLAP_CB_CONTINUE;
940 /* Only a remote entry, only remote filter:
943 rc = SLAP_CB_CONTINUE;
948 if ( rc == SLAP_CB_CONTINUE && tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
949 return LDAP_SIZELIMIT_EXCEEDED;
955 /* Dup the filter, excluding invalid elements */
957 trans_filter_dup(Operation *op, Filter *f, AttributeName *an)
964 switch( f->f_choice & SLAPD_FILTER_MASK ) {
965 case SLAPD_FILTER_COMPUTED:
966 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
967 n->f_choice = f->f_choice;
968 n->f_result = f->f_result;
972 case LDAP_FILTER_PRESENT:
973 if ( ad_inlist( f->f_desc, an )) {
974 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
975 n->f_choice = f->f_choice;
976 n->f_desc = f->f_desc;
981 case LDAP_FILTER_EQUALITY:
984 case LDAP_FILTER_APPROX:
985 case LDAP_FILTER_SUBSTRINGS:
986 case LDAP_FILTER_EXT:
987 if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
988 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
989 n->f_choice = f->f_choice;
995 case LDAP_FILTER_AND:
997 case LDAP_FILTER_NOT: {
1000 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1001 n->f_choice = f->f_choice;
1004 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
1005 *p = trans_filter_dup( op, f, an );
1010 /* nothing valid in this list */
1012 op->o_tmpfree( n, op->o_tmpmemctx );
1015 /* Only 1 element in this list */
1016 if ((n->f_choice & SLAPD_FILTER_MASK) != LDAP_FILTER_NOT &&
1017 !n->f_list->f_next ) {
1020 op->o_tmpfree( f, op->o_tmpmemctx );
1029 trans_filter_free( Operation *op, Filter *f )
1031 Filter *n, *p, *next;
1033 f->f_choice &= SLAPD_FILTER_MASK;
1035 switch( f->f_choice ) {
1036 case LDAP_FILTER_AND:
1037 case LDAP_FILTER_OR:
1038 case LDAP_FILTER_NOT:
1039 /* Free in reverse order */
1041 for ( p = f->f_list; p; p = next ) {
1046 for ( p = n; p; p = next ) {
1048 trans_filter_free( op, p );
1054 op->o_tmpfree( f, op->o_tmpmemctx );
1058 ** translucent_search()
1059 ** search via captive backend;
1060 ** override results with any local data;
1064 static int translucent_search(Operation *op, SlapReply *rs) {
1065 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1066 translucent_info *ov = on->on_bi.bi_private;
1067 slap_callback cb = { NULL, NULL, NULL, NULL };
1073 if ( op->o_managedsait > SLAP_CONTROL_IGNORED )
1074 return SLAP_CB_CONTINUE;
1076 Debug(LDAP_DEBUG_TRACE, "==> translucent_search: <%s> %s\n",
1077 op->o_req_dn.bv_val, op->ors_filterstr.bv_val, 0);
1079 if(ov->defer_db_open) {
1080 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1081 "remote DB not available");
1085 fr = ov->remote ? trans_filter_dup( op, op->ors_filter, ov->remote ) : NULL;
1086 fl = ov->local ? trans_filter_dup( op, op->ors_filter, ov->local ) : NULL;
1087 cb.sc_response = (slap_response *) translucent_search_cb;
1088 cb.sc_private = &tc;
1089 cb.sc_next = op->o_callback;
1091 ov->db.be_acl = op->o_bd->be_acl;
1094 tc.orig = op->ors_filter;
1097 tc.slimit = op->ors_slimit;
1099 fbv = op->ors_filterstr;
1101 op->o_callback = &cb;
1104 tc.attrs = op->ors_attrs;
1105 op->ors_slimit = SLAP_NO_LIMIT;
1106 op->ors_attrs = slap_anlist_all_attributes;
1108 tc.step |= RMT_SIDE;
1110 tc.step |= USE_LIST;
1111 op->ors_filter = fr;
1112 filter2bv_x( op, fr, &op->ors_filterstr );
1114 rc = ov->db.bd_info->bi_op_search(op, rs);
1115 if ( op->ors_attrs == slap_anlist_all_attributes )
1116 op->ors_attrs = tc.attrs;
1119 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1123 tc.step |= LCL_SIDE;
1124 op->ors_filter = fl;
1125 filter2bv_x( op, fl, &op->ors_filterstr );
1126 rc = overlay_op_walk( op, rs, op_search, on->on_info, on->on_next );
1127 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1129 op->ors_filterstr = fbv;
1130 op->ors_filter = tc.orig;
1131 op->o_callback = cb.sc_next;
1132 rs->sr_attrs = op->ors_attrs;
1133 rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
1135 /* Send out anything remaining on the list and finish */
1136 if ( tc.step & USE_LIST ) {
1140 av = tavl_end( tc.list, TAVL_DIR_LEFT );
1142 rs->sr_entry = av->avl_data;
1143 if ( rc == LDAP_SUCCESS && LDAP_COMPARE_TRUE ==
1144 test_filter( op, rs->sr_entry, op->ors_filter ))
1146 rs->sr_flags = REP_ENTRY_MUSTBEFREED;
1147 rc = send_search_entry( op, rs );
1149 entry_free( rs->sr_entry );
1151 av = tavl_next( av, TAVL_DIR_RIGHT );
1153 tavl_free( tc.list, NULL );
1155 rs->sr_entry = NULL;
1157 send_ldap_result( op, rs );
1160 op->ors_slimit = tc.slimit;
1162 /* Free in reverse order */
1164 trans_filter_free( op, fl );
1166 trans_filter_free( op, fr );
1173 ** translucent_bind()
1174 ** pass bind request to captive backend;
1178 static int translucent_bind(Operation *op, SlapReply *rs) {
1179 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1180 translucent_info *ov = on->on_bi.bi_private;
1182 slap_callback sc = { 0 }, *save_cb;
1185 Debug(LDAP_DEBUG_TRACE, "translucent_bind: <%s> method %d\n",
1186 op->o_req_dn.bv_val, op->orb_method, 0);
1188 if(ov->defer_db_open) {
1189 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1190 "remote DB not available");
1194 if (ov->bind_local) {
1195 sc.sc_response = slap_null_cb;
1196 save_cb = op->o_callback;
1197 op->o_callback = ≻
1202 ov->db.be_acl = op->o_bd->be_acl;
1203 rc = ov->db.bd_info->bi_op_bind(op, rs);
1206 if (ov->bind_local) {
1207 op->o_callback = save_cb;
1208 if (rc != LDAP_SUCCESS) {
1209 rc = SLAP_CB_CONTINUE;
1217 ** translucent_connection_destroy()
1218 ** pass disconnect notification to captive backend;
1222 static int translucent_connection_destroy(BackendDB *be, Connection *conn) {
1223 slap_overinst *on = (slap_overinst *) be->bd_info;
1224 translucent_info *ov = on->on_bi.bi_private;
1227 Debug(LDAP_DEBUG_TRACE, "translucent_connection_destroy\n", 0, 0, 0);
1229 rc = ov->db.bd_info->bi_connection_destroy(&ov->db, conn);
1235 ** translucent_db_config()
1236 ** pass config directives to captive backend;
1237 ** parse unrecognized directives ourselves;
1241 static int translucent_db_config(
1249 slap_overinst *on = (slap_overinst *) be->bd_info;
1250 translucent_info *ov = on->on_bi.bi_private;
1252 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_config: %s\n",
1253 argc ? argv[0] : "", 0, 0);
1255 /* Something for the captive database? */
1256 if ( ov->db.bd_info && ov->db.bd_info->bi_db_config )
1257 return ov->db.bd_info->bi_db_config( &ov->db, fname, lineno,
1259 return SLAP_CONF_UNKNOWN;
1263 ** translucent_db_init()
1264 ** initialize the captive backend;
1268 static int translucent_db_init(BackendDB *be, ConfigReply *cr) {
1269 slap_overinst *on = (slap_overinst *) be->bd_info;
1270 translucent_info *ov;
1272 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_init\n", 0, 0, 0);
1274 ov = ch_calloc(1, sizeof(translucent_info));
1275 on->on_bi.bi_private = ov;
1277 ov->db.be_private = NULL;
1278 ov->defer_db_open = 1;
1280 if ( !backend_db_init( "ldap", &ov->db, -1, NULL )) {
1281 Debug( LDAP_DEBUG_CONFIG, "translucent: unable to open captive back-ldap\n", 0, 0, 0);
1284 SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
1285 SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NOLASTMOD;
1291 ** translucent_db_open()
1292 ** if the captive backend has an open() method, call it;
1296 static int translucent_db_open(BackendDB *be, ConfigReply *cr) {
1297 slap_overinst *on = (slap_overinst *) be->bd_info;
1298 translucent_info *ov = on->on_bi.bi_private;
1301 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_open\n", 0, 0, 0);
1303 /* need to inherit something from the original database... */
1304 ov->db.be_def_limit = be->be_def_limit;
1305 ov->db.be_limits = be->be_limits;
1306 ov->db.be_acl = be->be_acl;
1307 ov->db.be_dfltaccess = be->be_dfltaccess;
1309 if ( ov->defer_db_open )
1312 rc = backend_startup_one( &ov->db, cr );
1314 if(rc) Debug(LDAP_DEBUG_TRACE,
1315 "translucent: bi_db_open() returned error %d\n", rc, 0, 0);
1321 ** translucent_db_close()
1322 ** if the captive backend has a close() method, call it
1327 translucent_db_close( BackendDB *be, ConfigReply *cr )
1329 slap_overinst *on = (slap_overinst *) be->bd_info;
1330 translucent_info *ov = on->on_bi.bi_private;
1333 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_close\n", 0, 0, 0);
1335 if ( ov && ov->db.bd_info && ov->db.bd_info->bi_db_close ) {
1336 rc = ov->db.bd_info->bi_db_close(&ov->db, NULL);
1343 ** translucent_db_destroy()
1344 ** if the captive backend has a db_destroy() method, call it;
1345 ** free any config data
1350 translucent_db_destroy( BackendDB *be, ConfigReply *cr )
1352 slap_overinst *on = (slap_overinst *) be->bd_info;
1353 translucent_info *ov = on->on_bi.bi_private;
1356 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_destroy\n", 0, 0, 0);
1360 anlist_free( ov->remote, 1, NULL );
1362 anlist_free( ov->local, 1, NULL );
1363 if ( ov->db.be_private != NULL ) {
1364 backend_stopdown_one( &ov->db );
1367 ldap_pvt_thread_mutex_destroy( &ov->db.be_pcl_mutex );
1369 on->on_bi.bi_private = NULL;
1376 ** translucent_initialize()
1377 ** initialize the slap_overinst with our entry points;
1381 int translucent_initialize() {
1385 Debug(LDAP_DEBUG_TRACE, "==> translucent_initialize\n", 0, 0, 0);
1387 translucent.on_bi.bi_type = "translucent";
1388 translucent.on_bi.bi_db_init = translucent_db_init;
1389 translucent.on_bi.bi_db_config = translucent_db_config;
1390 translucent.on_bi.bi_db_open = translucent_db_open;
1391 translucent.on_bi.bi_db_close = translucent_db_close;
1392 translucent.on_bi.bi_db_destroy = translucent_db_destroy;
1393 translucent.on_bi.bi_op_bind = translucent_bind;
1394 translucent.on_bi.bi_op_add = translucent_add;
1395 translucent.on_bi.bi_op_modify = translucent_modify;
1396 translucent.on_bi.bi_op_modrdn = translucent_modrdn;
1397 translucent.on_bi.bi_op_delete = translucent_delete;
1398 translucent.on_bi.bi_op_search = translucent_search;
1399 translucent.on_bi.bi_op_compare = translucent_compare;
1400 translucent.on_bi.bi_connection_destroy = translucent_connection_destroy;
1401 translucent.on_bi.bi_extended = translucent_exop;
1403 translucent.on_bi.bi_cf_ocs = translucentocs;
1404 rc = config_register_schema ( translucentcfg, translucentocs );
1405 if ( rc ) return rc;
1407 return(overlay_register(&translucent));
1410 #if SLAPD_OVER_TRANSLUCENT == SLAPD_MOD_DYNAMIC && defined(PIC)
1411 int init_module(int argc, char *argv[]) {
1412 return translucent_initialize();
1416 #endif /* SLAPD_OVER_TRANSLUCENT */