1 /* translucent.c - translucent proxy module */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2009 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];
209 } while ( !BER_BVISNULL( &(*an)[i].an_name ));
213 a2 = str2anlist( *an, c->argv[1], "," );
215 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse attribute %s",
216 c->argv[0], c->argv[1] );
217 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
218 "%s: %s\n", c->log, c->cr_msg, 0 );
225 static slap_overinst translucent;
229 ** call syncrepl_add_glue() with the parent suffix;
233 static struct berval glue[] = { BER_BVC("top"), BER_BVC("glue"), BER_BVNULL };
235 void glue_parent(Operation *op) {
237 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
238 struct berval ndn = BER_BVNULL;
243 dnParent( &op->o_req_ndn, &pdn );
244 ber_dupbv_x( &ndn, &pdn, op->o_tmpmemctx );
246 Debug(LDAP_DEBUG_TRACE, "=> glue_parent: fabricating glue for <%s>\n", ndn.bv_val, 0, 0);
250 ber_dupbv(&e->e_name, &ndn);
251 ber_dupbv(&e->e_nname, &ndn);
253 a = attr_alloc( slap_schema.si_ad_objectClass );
255 a->a_vals = ch_malloc(sizeof(struct berval) * 3);
256 ber_dupbv(&a->a_vals[0], &glue[0]);
257 ber_dupbv(&a->a_vals[1], &glue[1]);
258 ber_dupbv(&a->a_vals[2], &glue[2]);
259 a->a_nvals = a->a_vals;
260 a->a_next = e->e_attrs;
263 a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
265 a->a_vals = ch_malloc(sizeof(struct berval) * 2);
266 ber_dupbv(&a->a_vals[0], &glue[1]);
267 ber_dupbv(&a->a_vals[1], &glue[2]);
268 a->a_nvals = a->a_vals;
269 a->a_next = e->e_attrs;
276 nop.o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
277 syncrepl_add_glue(&nop, e);
278 nop.o_bd->bd_info = (BackendInfo *) on;
280 op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
287 ** free only the Attribute*, not the contents;
290 void free_attr_chain(Attribute *b) {
292 for(a=b; a; a=a->a_next) {
302 ** if not bound as root, send ACCESS error;
303 ** if glue, glue_parent();
308 static int translucent_add(Operation *op, SlapReply *rs) {
309 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
310 translucent_info *ov = on->on_bi.bi_private;
311 Debug(LDAP_DEBUG_TRACE, "==> translucent_add: %s\n",
312 op->o_req_dn.bv_val, 0, 0);
314 op->o_bd->bd_info = (BackendInfo *) on->on_info;
315 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
316 "user modification of overlay database not permitted");
317 op->o_bd->bd_info = (BackendInfo *) on;
320 if(!ov->no_glue) glue_parent(op);
321 return(SLAP_CB_CONTINUE);
325 ** translucent_modrdn()
326 ** if not bound as root, send ACCESS error;
327 ** if !glue, glue_parent();
328 ** else return CONTINUE;
332 static int translucent_modrdn(Operation *op, SlapReply *rs) {
333 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
334 translucent_info *ov = on->on_bi.bi_private;
335 Debug(LDAP_DEBUG_TRACE, "==> translucent_modrdn: %s -> %s\n",
336 op->o_req_dn.bv_val, op->orr_newrdn.bv_val, 0);
338 op->o_bd->bd_info = (BackendInfo *) on->on_info;
339 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
340 "user modification of overlay database not permitted");
341 op->o_bd->bd_info = (BackendInfo *) on;
345 op->o_tag = LDAP_REQ_ADD;
347 op->o_tag = LDAP_REQ_MODRDN;
349 return(SLAP_CB_CONTINUE);
353 ** translucent_delete()
354 ** if not bound as root, send ACCESS error;
355 ** else return CONTINUE;
359 static int translucent_delete(Operation *op, SlapReply *rs) {
360 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
361 Debug(LDAP_DEBUG_TRACE, "==> translucent_delete: %s\n",
362 op->o_req_dn.bv_val, 0, 0);
364 op->o_bd->bd_info = (BackendInfo *) on->on_info;
365 send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
366 "user modification of overlay database not permitted");
367 op->o_bd->bd_info = (BackendInfo *) on;
370 return(SLAP_CB_CONTINUE);
374 translucent_tag_cb( Operation *op, SlapReply *rs )
376 op->o_tag = LDAP_REQ_MODIFY;
377 op->orm_modlist = op->o_callback->sc_private;
378 rs->sr_tag = slap_req2res( op->o_tag );
380 return SLAP_CB_CONTINUE;
384 ** translucent_modify()
385 ** modify in local backend if exists in both;
386 ** otherwise, add to local backend;
387 ** fail if not defined in captive backend;
391 static int translucent_modify(Operation *op, SlapReply *rs) {
392 SlapReply nrs = { REP_RESULT };
394 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
395 translucent_info *ov = on->on_bi.bi_private;
396 Entry *e = NULL, *re = NULL;
398 Modifications *m, **mm;
400 int del, rc, erc = 0;
401 slap_callback cb = { 0 };
403 Debug(LDAP_DEBUG_TRACE, "==> translucent_modify: %s\n",
404 op->o_req_dn.bv_val, 0, 0);
406 if(ov->defer_db_open) {
407 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
408 "remote DB not available");
412 ** fetch entry from the captive backend;
413 ** if it did not exist, fail;
414 ** release it, if captive backend supports this;
420 ov->db.be_acl = op->o_bd->be_acl;
421 rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
422 if(rc != LDAP_SUCCESS || re == NULL ) {
423 send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
424 "attempt to modify nonexistent local record");
429 ** fetch entry from local backend;
431 ** foreach Modification:
432 ** if attr not present in local:
433 ** if Mod == LDAP_MOD_DELETE:
434 ** if remote attr not present, return NO_SUCH;
435 ** if remote attr present, drop this Mod;
436 ** else force this Mod to LDAP_MOD_ADD;
441 op->o_bd->bd_info = (BackendInfo *) on->on_info;
442 rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
443 op->o_bd->bd_info = (BackendInfo *) on;
445 if(e && rc == LDAP_SUCCESS) {
446 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: found local entry\n", 0, 0, 0);
447 for(mm = &op->orm_modlist; *mm; ) {
449 for(a = e->e_attrs; a; a = a->a_next)
450 if(a->a_desc == m->sml_desc) break;
453 continue; /* found local attr */
455 if(m->sml_op == LDAP_MOD_DELETE) {
456 for(a = re->e_attrs; a; a = a->a_next)
457 if(a->a_desc == m->sml_desc) break;
458 /* not found remote attr */
460 erc = LDAP_NO_SUCH_ATTRIBUTE;
464 erc = LDAP_CONSTRAINT_VIOLATION;
467 Debug(LDAP_DEBUG_TRACE,
468 "=> translucent_modify: silently dropping delete: %s\n",
469 m->sml_desc->ad_cname.bv_val, 0, 0);
472 slap_mods_free(m, 1);
475 m->sml_op = LDAP_MOD_ADD;
478 erc = SLAP_CB_CONTINUE;
481 if(ov->db.bd_info->bi_entry_release_rw) {
483 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
488 op->o_bd->bd_info = (BackendInfo *) on->on_info;
489 be_entry_release_r(op, e);
490 op->o_bd->bd_info = (BackendInfo *) on;
491 if(erc == SLAP_CB_CONTINUE) {
494 send_ldap_error(op, rs, erc,
495 "attempt to delete nonexistent attribute");
500 /* don't leak remote entry copy */
502 if(ov->db.bd_info->bi_entry_release_rw) {
504 ov->db.bd_info->bi_entry_release_rw(op, re, 0);
510 ** foreach Modification:
511 ** if MOD_ADD or MOD_REPLACE, add Attribute;
512 ** if no Modifications were suitable:
513 ** if strict, throw CONSTRAINT_VIOLATION;
514 ** else, return early SUCCESS;
515 ** fabricate Entry with new Attribute chain;
516 ** glue_parent() for this Entry;
517 ** call bi_op_add() in local backend;
521 Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: fabricating local add\n", 0, 0, 0);
523 for(del = 0, ax = NULL, m = op->orm_modlist; m; m = m->sml_next) {
525 if(((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_ADD) &&
526 ((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)) {
527 Debug(LDAP_DEBUG_ANY,
528 "=> translucent_modify: silently dropped modification(%d): %s\n",
529 m->sml_op, m->sml_desc->ad_cname.bv_val, 0);
530 if((m->sml_op & LDAP_MOD_OP) == LDAP_MOD_DELETE) del++;
533 atmp.a_desc = m->sml_desc;
534 atmp.a_vals = m->sml_values;
535 atmp.a_nvals = m->sml_nvalues ? m->sml_nvalues : atmp.a_vals;
536 atmp.a_numvals = m->sml_numvals;
538 a = attr_dup( &atmp );
543 if(del && ov->strict) {
545 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
546 "attempt to delete attributes from local database");
552 send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
553 "modification contained other than ADD or REPLACE");
556 /* rs->sr_text = "no valid modification found"; */
557 rs->sr_err = LDAP_SUCCESS;
558 send_ldap_result(op, rs);
563 ber_dupbv( &e->e_name, &op->o_req_dn );
564 ber_dupbv( &e->e_nname, &op->o_req_ndn );
567 op->o_tag = LDAP_REQ_ADD;
568 cb.sc_response = translucent_tag_cb;
569 cb.sc_private = op->orm_modlist;
574 cb.sc_next = op->o_callback;
575 op->o_callback = &cb;
576 rc = on->on_info->oi_orig->bi_op_add(op, &nrs);
577 if ( op->ora_e == e )
579 op->o_callback = cb.sc_next;
584 static int translucent_compare(Operation *op, SlapReply *rs) {
585 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
586 translucent_info *ov = on->on_bi.bi_private;
587 AttributeAssertion *ava = op->orc_ava;
592 Debug(LDAP_DEBUG_TRACE, "==> translucent_compare: <%s> %s:%s\n",
593 op->o_req_dn.bv_val, ava->aa_desc->ad_cname.bv_val, ava->aa_value.bv_val);
596 ** if the local backend has an entry for this attribute:
597 ** CONTINUE and let it do the compare;
600 rc = overlay_entry_get_ov(op, &op->o_req_ndn, NULL, ava->aa_desc, 0, &e, on);
601 if(rc == LDAP_SUCCESS && e) {
602 overlay_entry_release_ov(op, e, 0, on);
603 return(SLAP_CB_CONTINUE);
606 if(ov->defer_db_open) {
607 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
608 "remote DB not available");
612 ** call compare() in the captive backend;
613 ** return the result;
618 ov->db.be_acl = op->o_bd->be_acl;
619 rc = ov->db.bd_info->bi_op_compare(op, rs);
625 static int translucent_pwmod(Operation *op, SlapReply *rs) {
626 SlapReply nrs = { REP_RESULT };
629 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
630 translucent_info *ov = on->on_bi.bi_private;
631 const struct berval bv_exop_pwmod = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
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 SlapReply nrs = { REP_RESULT };
728 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
729 translucent_info *ov = on->on_bi.bi_private;
730 const struct berval bv_exop_pwmod = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
732 Debug(LDAP_DEBUG_TRACE, "==> translucent_exop: %s\n",
733 op->o_req_dn.bv_val, 0, 0);
735 if(ov->defer_db_open) {
736 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
737 "remote DB not available");
741 if ( bvmatch( &bv_exop_pwmod, &op->ore_reqoid ) ) {
742 return translucent_pwmod( op, rs );
745 return SLAP_CB_CONTINUE;
749 ** translucent_search_cb()
750 ** merge local data with remote data
753 ** 1: remote search, no local filter
754 ** merge data and send immediately
755 ** 2: remote search, with local filter
756 ** merge data and save
757 ** 3: local search, no remote filter
758 ** merge data and send immediately
759 ** 4: local search, with remote filter
760 ** check list, merge, send, delete
767 typedef struct trans_ctx {
774 AttributeName *attrs;
777 static int translucent_search_cb(Operation *op, SlapReply *rs) {
781 translucent_info *ov;
783 Attribute *a, *ax, *an, *as = NULL;
787 tc = op->o_callback->sc_private;
789 /* Don't let the op complete while we're gathering data */
790 if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
793 if(!op || !rs || rs->sr_type != REP_SEARCH || !rs->sr_entry)
794 return(SLAP_CB_CONTINUE);
796 Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
797 rs->sr_entry->e_name.bv_val, 0, 0);
799 op->ors_slimit = tc->slimit + ( tc->slimit > 0 ? 1 : 0 );
800 if ( op->ors_attrs == slap_anlist_all_attributes ) {
801 op->ors_attrs = tc->attrs;
802 rs->sr_attrs = tc->attrs;
803 rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
807 ov = on->on_bi.bi_private;
812 /* If we have local, get remote */
813 if ( tc->step & LCL_SIDE ) {
815 /* If entry is already on list, use it */
816 if ( tc->step & USE_LIST ) {
817 re = tavl_delete( &tc->list, le, entry_dn_cmp );
819 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
820 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
821 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
823 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
824 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
825 entry_free( rs->sr_entry );
827 rc = test_filter( op, re, tc->orig );
828 if ( rc == LDAP_COMPARE_TRUE ) {
829 rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
832 if ( tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
833 return LDAP_SIZELIMIT_EXCEEDED;
836 return SLAP_CB_CONTINUE;
845 rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
846 if ( rc == LDAP_SUCCESS && re ) {
847 Entry *tmp = entry_dup( re );
848 be_entry_release_r( op, re );
853 /* Else we have remote, get local */
855 rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
856 if ( rc == LDAP_SUCCESS && le ) {
857 re = entry_dup( rs->sr_entry );
858 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
859 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
860 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
862 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
863 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
864 entry_free( rs->sr_entry );
872 ** if we got remote and local entry:
873 ** foreach local attr:
874 ** foreach remote attr:
875 ** if match, remote attr with local attr;
876 ** if new local, add to list;
877 ** append new local attrs to remote;
882 for(ax = le->e_attrs; ax; ax = ax->a_next) {
883 for(a = re->e_attrs; a; a = a->a_next) {
884 if(a->a_desc == ax->a_desc) {
886 if(a->a_vals != a->a_nvals)
887 ber_bvarray_free(a->a_nvals);
888 ber_bvarray_free(a->a_vals);
889 ber_bvarray_dup_x( &a->a_vals, ax->a_vals, NULL );
890 if ( ax->a_vals == ax->a_nvals ) {
891 a->a_nvals = a->a_vals;
893 ber_bvarray_dup_x( &a->a_nvals, ax->a_nvals, NULL );
903 /* Dispose of local entry */
904 if ( tc->step & LCL_SIDE ) {
905 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
906 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
907 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
909 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
910 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
911 entry_free( rs->sr_entry );
914 overlay_entry_release_ov(op, le, 0, on);
917 /* literally append, so locals are always last */
920 for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
926 /* If both filters, save entry for later */
927 if ( tc->step == (USE_LIST|RMT_SIDE) ) {
928 tavl_insert( &tc->list, re, entry_dn_cmp, avl_dup_error );
934 rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
936 rc = test_filter( op, rs->sr_entry, tc->orig );
937 if ( rc == LDAP_COMPARE_TRUE ) {
938 rc = SLAP_CB_CONTINUE;
943 rc = SLAP_CB_CONTINUE;
947 /* Only a local entry: remote was deleted
948 * Ought to delete the local too...
951 } else if ( tc->step & USE_LIST ) {
952 /* Only a remote entry, but both filters:
953 * Test the complete filter
955 rc = test_filter( op, rs->sr_entry, tc->orig );
956 if ( rc == LDAP_COMPARE_TRUE ) {
957 rc = SLAP_CB_CONTINUE;
962 /* Only a remote entry, only remote filter:
965 rc = SLAP_CB_CONTINUE;
970 if ( rc == SLAP_CB_CONTINUE && tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
971 return LDAP_SIZELIMIT_EXCEEDED;
977 /* Dup the filter, excluding invalid elements */
979 trans_filter_dup(Operation *op, Filter *f, AttributeName *an)
986 switch( f->f_choice & SLAPD_FILTER_MASK ) {
987 case SLAPD_FILTER_COMPUTED:
988 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
989 n->f_choice = f->f_choice;
990 n->f_result = f->f_result;
994 case LDAP_FILTER_PRESENT:
995 if ( ad_inlist( f->f_desc, an )) {
996 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
997 n->f_choice = f->f_choice;
998 n->f_desc = f->f_desc;
1003 case LDAP_FILTER_EQUALITY:
1004 case LDAP_FILTER_GE:
1005 case LDAP_FILTER_LE:
1006 case LDAP_FILTER_APPROX:
1007 case LDAP_FILTER_SUBSTRINGS:
1008 case LDAP_FILTER_EXT:
1009 if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
1010 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1011 n->f_choice = f->f_choice;
1012 n->f_ava = f->f_ava;
1017 case LDAP_FILTER_AND:
1018 case LDAP_FILTER_OR:
1019 case LDAP_FILTER_NOT: {
1022 n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1023 n->f_choice = f->f_choice;
1026 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
1027 *p = trans_filter_dup( op, f, an );
1032 /* nothing valid in this list */
1034 op->o_tmpfree( n, op->o_tmpmemctx );
1037 /* Only 1 element in this list */
1038 if ((n->f_choice & SLAPD_FILTER_MASK) != LDAP_FILTER_NOT &&
1039 !n->f_list->f_next ) {
1042 op->o_tmpfree( f, op->o_tmpmemctx );
1051 trans_filter_free( Operation *op, Filter *f )
1053 Filter *n, *p, *next;
1055 f->f_choice &= SLAPD_FILTER_MASK;
1057 switch( f->f_choice ) {
1058 case LDAP_FILTER_AND:
1059 case LDAP_FILTER_OR:
1060 case LDAP_FILTER_NOT:
1061 /* Free in reverse order */
1063 for ( p = f->f_list; p; p = next ) {
1068 for ( p = n; p; p = next ) {
1070 trans_filter_free( op, p );
1076 op->o_tmpfree( f, op->o_tmpmemctx );
1080 ** translucent_search()
1081 ** search via captive backend;
1082 ** override results with any local data;
1086 static int translucent_search(Operation *op, SlapReply *rs) {
1087 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1088 translucent_info *ov = on->on_bi.bi_private;
1089 slap_callback cb = { NULL, NULL, NULL, NULL };
1095 Debug(LDAP_DEBUG_TRACE, "==> translucent_search: <%s> %s\n",
1096 op->o_req_dn.bv_val, op->ors_filterstr.bv_val, 0);
1098 if(ov->defer_db_open) {
1099 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1100 "remote DB not available");
1104 fr = ov->remote ? trans_filter_dup( op, op->ors_filter, ov->remote ) : NULL;
1105 fl = ov->local ? trans_filter_dup( op, op->ors_filter, ov->local ) : NULL;
1106 cb.sc_response = (slap_response *) translucent_search_cb;
1107 cb.sc_private = &tc;
1108 cb.sc_next = op->o_callback;
1110 ov->db.be_acl = op->o_bd->be_acl;
1113 tc.orig = op->ors_filter;
1116 tc.slimit = op->ors_slimit;
1118 fbv = op->ors_filterstr;
1120 op->o_callback = &cb;
1123 tc.attrs = op->ors_attrs;
1124 op->ors_slimit = SLAP_NO_LIMIT;
1125 op->ors_attrs = slap_anlist_all_attributes;
1127 tc.step |= RMT_SIDE;
1129 tc.step |= USE_LIST;
1130 op->ors_filter = fr;
1131 filter2bv_x( op, fr, &op->ors_filterstr );
1133 rc = ov->db.bd_info->bi_op_search(op, rs);
1134 op->ors_attrs = tc.attrs;
1137 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1141 tc.step |= LCL_SIDE;
1142 op->ors_filter = fl;
1143 filter2bv_x( op, fl, &op->ors_filterstr );
1144 rc = overlay_op_walk( op, rs, op_search, on->on_info, on->on_next );
1145 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1147 op->ors_filterstr = fbv;
1148 op->ors_filter = tc.orig;
1149 op->o_callback = cb.sc_next;
1150 rs->sr_attrs = op->ors_attrs;
1151 rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
1153 /* Send out anything remaining on the list and finish */
1154 if ( tc.step & USE_LIST ) {
1158 av = tavl_end( tc.list, TAVL_DIR_LEFT );
1160 rs->sr_entry = av->avl_data;
1161 rc = test_filter( op, rs->sr_entry, op->ors_filter );
1162 if ( rc == LDAP_COMPARE_TRUE ) {
1163 rs->sr_flags = REP_ENTRY_MUSTBEFREED;
1164 rc = send_search_entry( op, rs );
1167 entry_free( rs->sr_entry );
1169 av = tavl_next( av, TAVL_DIR_RIGHT );
1171 tavl_free( tc.list, NULL );
1172 rs->sr_entry = NULL;
1174 send_ldap_result( op, rs );
1177 op->ors_slimit = tc.slimit;
1179 /* Free in reverse order */
1181 trans_filter_free( op, fl );
1183 trans_filter_free( op, fr );
1190 ** translucent_bind()
1191 ** pass bind request to captive backend;
1195 static int translucent_bind(Operation *op, SlapReply *rs) {
1196 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
1197 translucent_info *ov = on->on_bi.bi_private;
1199 slap_callback sc = { 0 }, *save_cb;
1202 Debug(LDAP_DEBUG_TRACE, "translucent_bind: <%s> method %d\n",
1203 op->o_req_dn.bv_val, op->orb_method, 0);
1205 if(ov->defer_db_open) {
1206 send_ldap_error(op, rs, LDAP_UNAVAILABLE,
1207 "remote DB not available");
1211 if (ov->bind_local) {
1212 sc.sc_response = slap_null_cb;
1213 save_cb = op->o_callback;
1214 op->o_callback = ≻
1219 ov->db.be_acl = op->o_bd->be_acl;
1220 rc = ov->db.bd_info->bi_op_bind(op, rs);
1223 if (ov->bind_local) {
1224 op->o_callback = save_cb;
1225 if (rc != LDAP_SUCCESS) {
1226 rc = SLAP_CB_CONTINUE;
1234 ** translucent_connection_destroy()
1235 ** pass disconnect notification to captive backend;
1239 static int translucent_connection_destroy(BackendDB *be, Connection *conn) {
1240 slap_overinst *on = (slap_overinst *) be->bd_info;
1241 translucent_info *ov = on->on_bi.bi_private;
1244 Debug(LDAP_DEBUG_TRACE, "translucent_connection_destroy\n", 0, 0, 0);
1246 rc = ov->db.bd_info->bi_connection_destroy(&ov->db, conn);
1252 ** translucent_db_config()
1253 ** pass config directives to captive backend;
1254 ** parse unrecognized directives ourselves;
1258 static int translucent_db_config(
1266 slap_overinst *on = (slap_overinst *) be->bd_info;
1267 translucent_info *ov = on->on_bi.bi_private;
1269 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_config: %s\n",
1270 argc ? argv[0] : "", 0, 0);
1272 /* Something for the captive database? */
1273 if ( ov->db.bd_info && ov->db.bd_info->bi_db_config )
1274 return ov->db.bd_info->bi_db_config( &ov->db, fname, lineno,
1276 return SLAP_CONF_UNKNOWN;
1280 ** translucent_db_init()
1281 ** initialize the captive backend;
1285 static int translucent_db_init(BackendDB *be, ConfigReply *cr) {
1286 slap_overinst *on = (slap_overinst *) be->bd_info;
1287 translucent_info *ov;
1289 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_init\n", 0, 0, 0);
1291 ov = ch_calloc(1, sizeof(translucent_info));
1292 on->on_bi.bi_private = ov;
1294 ov->db.be_private = NULL;
1295 ov->defer_db_open = 1;
1297 if ( !backend_db_init( "ldap", &ov->db, -1, NULL )) {
1298 Debug( LDAP_DEBUG_CONFIG, "translucent: unable to open captive back-ldap\n", 0, 0, 0);
1301 SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
1302 SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NOLASTMOD;
1308 ** translucent_db_open()
1309 ** if the captive backend has an open() method, call it;
1313 static int translucent_db_open(BackendDB *be, ConfigReply *cr) {
1314 slap_overinst *on = (slap_overinst *) be->bd_info;
1315 translucent_info *ov = on->on_bi.bi_private;
1318 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_open\n", 0, 0, 0);
1320 /* need to inherit something from the original database... */
1321 ov->db.be_def_limit = be->be_def_limit;
1322 ov->db.be_limits = be->be_limits;
1323 ov->db.be_acl = be->be_acl;
1324 ov->db.be_dfltaccess = be->be_dfltaccess;
1326 if ( ov->defer_db_open )
1329 rc = backend_startup_one( &ov->db, cr );
1331 if(rc) Debug(LDAP_DEBUG_TRACE,
1332 "translucent: bi_db_open() returned error %d\n", rc, 0, 0);
1338 ** translucent_db_close()
1339 ** if the captive backend has a close() method, call it
1344 translucent_db_close( BackendDB *be, ConfigReply *cr )
1346 slap_overinst *on = (slap_overinst *) be->bd_info;
1347 translucent_info *ov = on->on_bi.bi_private;
1350 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_close\n", 0, 0, 0);
1352 if ( ov && ov->db.bd_info && ov->db.bd_info->bi_db_close ) {
1353 rc = ov->db.bd_info->bi_db_close(&ov->db, NULL);
1360 ** translucent_db_destroy()
1361 ** if the captive backend has a db_destroy() method, call it;
1362 ** free any config data
1367 translucent_db_destroy( BackendDB *be, ConfigReply *cr )
1369 slap_overinst *on = (slap_overinst *) be->bd_info;
1370 translucent_info *ov = on->on_bi.bi_private;
1373 Debug(LDAP_DEBUG_TRACE, "==> translucent_db_destroy\n", 0, 0, 0);
1377 anlist_free( ov->remote, 1, NULL );
1379 anlist_free( ov->local, 1, NULL );
1380 if ( ov->db.be_private != NULL ) {
1381 backend_stopdown_one( &ov->db );
1385 on->on_bi.bi_private = NULL;
1392 ** translucent_initialize()
1393 ** initialize the slap_overinst with our entry points;
1397 int translucent_initialize() {
1401 Debug(LDAP_DEBUG_TRACE, "==> translucent_initialize\n", 0, 0, 0);
1403 translucent.on_bi.bi_type = "translucent";
1404 translucent.on_bi.bi_db_init = translucent_db_init;
1405 translucent.on_bi.bi_db_config = translucent_db_config;
1406 translucent.on_bi.bi_db_open = translucent_db_open;
1407 translucent.on_bi.bi_db_close = translucent_db_close;
1408 translucent.on_bi.bi_db_destroy = translucent_db_destroy;
1409 translucent.on_bi.bi_op_bind = translucent_bind;
1410 translucent.on_bi.bi_op_add = translucent_add;
1411 translucent.on_bi.bi_op_modify = translucent_modify;
1412 translucent.on_bi.bi_op_modrdn = translucent_modrdn;
1413 translucent.on_bi.bi_op_delete = translucent_delete;
1414 translucent.on_bi.bi_op_search = translucent_search;
1415 translucent.on_bi.bi_op_compare = translucent_compare;
1416 translucent.on_bi.bi_connection_destroy = translucent_connection_destroy;
1417 translucent.on_bi.bi_extended = translucent_exop;
1419 translucent.on_bi.bi_cf_ocs = translucentocs;
1420 rc = config_register_schema ( translucentcfg, translucentocs );
1421 if ( rc ) return rc;
1423 return(overlay_register(&translucent));
1426 #if SLAPD_OVER_TRANSLUCENT == SLAPD_MOD_DYNAMIC && defined(PIC)
1427 int init_module(int argc, char *argv[]) {
1428 return translucent_initialize();
1432 #endif /* SLAPD_OVER_TRANSLUCENT */