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-rw-r--r--servers/slapd/overlays/translucent.c1497
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diff --git a/servers/slapd/overlays/translucent.c b/servers/slapd/overlays/translucent.c
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+++ b/servers/slapd/overlays/translucent.c
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+/* translucent.c - translucent proxy module */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2005 Symas Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Symas Corp. for inclusion in
+ * OpenLDAP Software. This work was sponsored by Hewlett-Packard.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_TRANSLUCENT
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "lutil.h"
+
+#include "slap-config.h"
+
+/* config block */
+typedef struct translucent_info {
+ BackendDB db; /* captive backend */
+ AttributeName *local; /* valid attrs for local filters */
+ AttributeName *remote; /* valid attrs for remote filters */
+ int strict;
+ int no_glue;
+ int defer_db_open;
+ int bind_local;
+ int pwmod_local;
+} translucent_info;
+
+static ConfigLDAPadd translucent_ldadd;
+static ConfigCfAdd translucent_cfadd;
+
+static ConfigDriver translucent_cf_gen;
+
+enum {
+ TRANS_LOCAL = 1,
+ TRANS_REMOTE
+};
+
+static ConfigTable translucentcfg[] = {
+ { "translucent_strict", "on|off", 1, 2, 0,
+ ARG_ON_OFF|ARG_OFFSET,
+ (void *)offsetof(translucent_info, strict),
+ "( OLcfgOvAt:14.1 NAME 'olcTranslucentStrict' "
+ "DESC 'Reveal attribute deletion constraint violations' "
+ "EQUALITY booleanMatch "
+ "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
+ { "translucent_no_glue", "on|off", 1, 2, 0,
+ ARG_ON_OFF|ARG_OFFSET,
+ (void *)offsetof(translucent_info, no_glue),
+ "( OLcfgOvAt:14.2 NAME 'olcTranslucentNoGlue' "
+ "DESC 'Disable automatic glue records for ADD and MODRDN' "
+ "EQUALITY booleanMatch "
+ "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
+ { "translucent_local", "attr[,attr...]", 1, 2, 0,
+ ARG_MAGIC|TRANS_LOCAL,
+ translucent_cf_gen,
+ "( OLcfgOvAt:14.3 NAME 'olcTranslucentLocal' "
+ "DESC 'Attributes to use in local search filter' "
+ "EQUALITY caseIgnoreMatch "
+ "SYNTAX OMsDirectoryString )", NULL, NULL },
+ { "translucent_remote", "attr[,attr...]", 1, 2, 0,
+ ARG_MAGIC|TRANS_REMOTE,
+ translucent_cf_gen,
+ "( OLcfgOvAt:14.4 NAME 'olcTranslucentRemote' "
+ "DESC 'Attributes to use in remote search filter' "
+ "EQUALITY caseIgnoreMatch "
+ "SYNTAX OMsDirectoryString )", NULL, NULL },
+ { "translucent_bind_local", "on|off", 1, 2, 0,
+ ARG_ON_OFF|ARG_OFFSET,
+ (void *)offsetof(translucent_info, bind_local),
+ "( OLcfgOvAt:14.5 NAME 'olcTranslucentBindLocal' "
+ "DESC 'Enable local bind' "
+ "EQUALITY booleanMatch "
+ "SYNTAX OMsBoolean SINGLE-VALUE)", NULL, NULL },
+ { "translucent_pwmod_local", "on|off", 1, 2, 0,
+ ARG_ON_OFF|ARG_OFFSET,
+ (void *)offsetof(translucent_info, pwmod_local),
+ "( OLcfgOvAt:14.6 NAME 'olcTranslucentPwModLocal' "
+ "DESC 'Enable local RFC 3062 Password Modify extended operation' "
+ "EQUALITY booleanMatch "
+ "SYNTAX OMsBoolean SINGLE-VALUE)", NULL, NULL },
+ { NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs translucentocs[] = {
+ { "( OLcfgOvOc:14.1 "
+ "NAME 'olcTranslucentConfig' "
+ "DESC 'Translucent configuration' "
+ "SUP olcOverlayConfig "
+ "MAY ( olcTranslucentStrict $ olcTranslucentNoGlue $"
+ " olcTranslucentLocal $ olcTranslucentRemote $"
+ " olcTranslucentBindLocal $ olcTranslucentPwModLocal ) )",
+ Cft_Overlay, translucentcfg, NULL, translucent_cfadd },
+ { "( OLcfgOvOc:14.2 "
+ "NAME 'olcTranslucentDatabase' "
+ "DESC 'Translucent target database configuration' "
+ /* co_table is initialized in translucent_initialize() */
+ "AUXILIARY )", Cft_Misc, NULL, translucent_ldadd },
+ { NULL, 0, NULL }
+};
+/* for translucent_init() */
+
+static int
+translucent_ldadd_cleanup( ConfigArgs *ca )
+{
+ slap_overinst *on = ca->ca_private;
+ translucent_info *ov = on->on_bi.bi_private;
+
+ ov->defer_db_open = 0;
+ return backend_startup_one( ca->be, &ca->reply );
+}
+
+static int
+translucent_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+ slap_overinst *on;
+ translucent_info *ov;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_ldadd\n" );
+
+ if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
+ cei->ce_bi->bi_cf_ocs != translucentocs )
+ return LDAP_CONSTRAINT_VIOLATION;
+
+ on = (slap_overinst *)cei->ce_bi;
+ ov = on->on_bi.bi_private;
+ ca->be = &ov->db;
+ ca->ca_private = on;
+ if ( CONFIG_ONLINE_ADD( ca ))
+ config_push_cleanup( ca, translucent_ldadd_cleanup );
+ else
+ ov->defer_db_open = 0;
+
+ return LDAP_SUCCESS;
+}
+
+static int
+translucent_cfadd( Operation *op, SlapReply *rs, Entry *e, ConfigArgs *ca )
+{
+ CfEntryInfo *cei = e->e_private;
+ slap_overinst *on = (slap_overinst *)cei->ce_bi;
+ translucent_info *ov = on->on_bi.bi_private;
+ struct berval bv;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_cfadd\n" );
+
+ /* FIXME: should not hardcode "olcDatabase" here */
+ bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
+ "olcDatabase=" SLAP_X_ORDERED_FMT "%s",
+ 0, ov->db.bd_info->bi_type );
+ if ( bv.bv_len >= sizeof( ca->cr_msg ) ) {
+ return -1;
+ }
+ bv.bv_val = ca->cr_msg;
+ ca->be = &ov->db;
+ ov->defer_db_open = 0;
+
+ /* We can only create this entry if the database is table-driven
+ */
+ if ( ov->db.bd_info->bi_cf_ocs )
+ config_build_entry( op, rs, cei, ca, &bv,
+ ov->db.bd_info->bi_cf_ocs,
+ &translucentocs[1] );
+
+ return 0;
+}
+
+static int
+translucent_cf_gen( ConfigArgs *c )
+{
+ slap_overinst *on = (slap_overinst *)c->bi;
+ translucent_info *ov = on->on_bi.bi_private;
+ AttributeName **an, *a2;
+ int i;
+
+ if ( c->type == TRANS_LOCAL )
+ an = &ov->local;
+ else
+ an = &ov->remote;
+
+ if ( c->op == SLAP_CONFIG_EMIT ) {
+ if ( !*an )
+ return 1;
+ for ( i = 0; !BER_BVISNULL(&(*an)[i].an_name); i++ ) {
+ value_add_one( &c->rvalue_vals, &(*an)[i].an_name );
+ }
+ return ( i < 1 );
+ } else if ( c->op == LDAP_MOD_DELETE ) {
+ if ( c->valx < 0 ) {
+ anlist_free( *an, 1, NULL );
+ *an = NULL;
+ } else {
+ i = c->valx;
+ ch_free( (*an)[i].an_name.bv_val );
+ do {
+ (*an)[i] = (*an)[i+1];
+ i++;
+ } while ( !BER_BVISNULL( &(*an)[i].an_name ));
+ }
+ return 0;
+ }
+
+ /* cn=config values could be deleted later, we only want one name
+ * per value for valx to match. */
+ if ( c->op != SLAP_CONFIG_ADD && strchr( c->argv[1], ',' ) ) {
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE, "%s: %s: "
+ "Supplying multiple attribute names in a single value is "
+ "unsupported and will be disallowed in a future version\n",
+ c->log, c->argv[0] );
+ }
+
+ a2 = str2anlist( *an, c->argv[1], "," );
+ if ( !a2 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse attribute %s",
+ c->argv[0], c->argv[1] );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg );
+ return ARG_BAD_CONF;
+ }
+ *an = a2;
+ return 0;
+}
+
+static slap_overinst translucent;
+
+/*
+** glue_parent()
+** call syncrepl_add_glue() with the parent suffix;
+**
+*/
+
+static struct berval glue[] = { BER_BVC("top"), BER_BVC("glue"), BER_BVNULL };
+
+void glue_parent(Operation *op) {
+ Operation nop = *op;
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ struct berval ndn = BER_BVNULL;
+ Attribute *a;
+ Entry *e;
+ struct berval pdn;
+
+ dnParent( &op->o_req_ndn, &pdn );
+ ber_dupbv_x( &ndn, &pdn, op->o_tmpmemctx );
+
+ Debug(LDAP_DEBUG_TRACE, "=> glue_parent: fabricating glue for <%s>\n", ndn.bv_val );
+
+ e = entry_alloc();
+ e->e_id = NOID;
+ ber_dupbv(&e->e_name, &ndn);
+ ber_dupbv(&e->e_nname, &ndn);
+
+ a = attr_alloc( slap_schema.si_ad_objectClass );
+ a->a_numvals = 2;
+ a->a_vals = ch_malloc(sizeof(struct berval) * 3);
+ ber_dupbv(&a->a_vals[0], &glue[0]);
+ ber_dupbv(&a->a_vals[1], &glue[1]);
+ ber_dupbv(&a->a_vals[2], &glue[2]);
+ a->a_nvals = a->a_vals;
+ a->a_next = e->e_attrs;
+ e->e_attrs = a;
+
+ a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
+ a->a_numvals = 1;
+ a->a_vals = ch_malloc(sizeof(struct berval) * 2);
+ ber_dupbv(&a->a_vals[0], &glue[1]);
+ ber_dupbv(&a->a_vals[1], &glue[2]);
+ a->a_nvals = a->a_vals;
+ a->a_next = e->e_attrs;
+ e->e_attrs = a;
+
+ nop.o_req_dn = ndn;
+ nop.o_req_ndn = ndn;
+ nop.ora_e = e;
+
+ nop.o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
+ syncrepl_add_glue(&nop, e);
+ nop.o_bd->bd_info = (BackendInfo *) on;
+
+ op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
+
+ return;
+}
+
+/*
+** free_attr_chain()
+** free only the Attribute*, not the contents;
+**
+*/
+void free_attr_chain(Attribute *b) {
+ Attribute *a;
+ for(a=b; a; a=a->a_next) {
+ a->a_vals = NULL;
+ a->a_nvals = NULL;
+ }
+ attrs_free( b );
+ return;
+}
+
+/*
+** translucent_add()
+** if not bound as root, send ACCESS error;
+** if glue, glue_parent();
+** return CONTINUE;
+**
+*/
+
+static int translucent_add(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_add: %s\n",
+ op->o_req_dn.bv_val );
+ if(!be_isroot(op)) {
+ op->o_bd->bd_info = (BackendInfo *) on->on_info;
+ send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
+ "user modification of overlay database not permitted");
+ op->o_bd->bd_info = (BackendInfo *) on;
+ return(rs->sr_err);
+ }
+ if(!ov->no_glue) glue_parent(op);
+ return(SLAP_CB_CONTINUE);
+}
+
+/*
+** translucent_modrdn()
+** if not bound as root, send ACCESS error;
+** if !glue, glue_parent();
+** else return CONTINUE;
+**
+*/
+
+static int translucent_modrdn(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_modrdn: %s -> %s\n",
+ op->o_req_dn.bv_val, op->orr_newrdn.bv_val );
+ if(!be_isroot(op)) {
+ op->o_bd->bd_info = (BackendInfo *) on->on_info;
+ send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
+ "user modification of overlay database not permitted");
+ op->o_bd->bd_info = (BackendInfo *) on;
+ return(rs->sr_err);
+ }
+ if(!ov->no_glue) {
+ op->o_tag = LDAP_REQ_ADD;
+ glue_parent(op);
+ op->o_tag = LDAP_REQ_MODRDN;
+ }
+ return(SLAP_CB_CONTINUE);
+}
+
+/*
+** translucent_delete()
+** if not bound as root, send ACCESS error;
+** else return CONTINUE;
+**
+*/
+
+static int translucent_delete(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_delete: %s\n",
+ op->o_req_dn.bv_val );
+ if(!be_isroot(op)) {
+ op->o_bd->bd_info = (BackendInfo *) on->on_info;
+ send_ldap_error(op, rs, LDAP_INSUFFICIENT_ACCESS,
+ "user modification of overlay database not permitted");
+ op->o_bd->bd_info = (BackendInfo *) on;
+ return(rs->sr_err);
+ }
+ return(SLAP_CB_CONTINUE);
+}
+
+static int
+translucent_tag_cb( Operation *op, SlapReply *rs )
+{
+ op->o_tag = LDAP_REQ_MODIFY;
+ op->orm_modlist = op->o_callback->sc_private;
+ rs->sr_tag = slap_req2res( op->o_tag );
+
+ return SLAP_CB_CONTINUE;
+}
+
+/*
+** translucent_modify()
+** modify in local backend if exists in both;
+** otherwise, add to local backend;
+** fail if not defined in captive backend;
+**
+*/
+
+static int translucent_modify(Operation *op, SlapReply *rs) {
+ SlapReply nrs = { REP_RESULT };
+
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ Entry *e = NULL, *re = NULL;
+ Attribute *a, *ax;
+ Modifications *m, **mm;
+ BackendDB *db;
+ int del, rc, erc = 0;
+ slap_callback cb = { 0 };
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_modify: %s\n",
+ op->o_req_dn.bv_val );
+
+ if(ov->defer_db_open) {
+ send_ldap_error(op, rs, LDAP_UNAVAILABLE,
+ "remote DB not available");
+ return(rs->sr_err);
+ }
+/*
+** fetch entry from the captive backend;
+** if it did not exist, fail;
+** release it, if captive backend supports this;
+**
+*/
+
+ db = op->o_bd;
+ op->o_bd = &ov->db;
+ ov->db.be_acl = op->o_bd->be_acl;
+ rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
+ op->o_bd = db;
+ if(rc != LDAP_SUCCESS || re == NULL ) {
+ send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
+ "attempt to modify nonexistent local record");
+ return(rs->sr_err);
+ }
+/*
+** fetch entry from local backend;
+** if it exists:
+** foreach Modification:
+** if attr not present in local:
+** if Mod == LDAP_MOD_DELETE:
+** if remote attr not present, return NO_SUCH;
+** if remote attr present, drop this Mod;
+** else force this Mod to LDAP_MOD_ADD;
+** return CONTINUE;
+**
+*/
+
+ op->o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
+ rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
+ op->o_bd->bd_info = (BackendInfo *) on;
+
+ if(e && rc == LDAP_SUCCESS) {
+ Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: found local entry\n" );
+ for(mm = &op->orm_modlist; *mm; ) {
+ m = *mm;
+ for(a = e->e_attrs; a; a = a->a_next)
+ if(a->a_desc == m->sml_desc) break;
+ if(a) {
+ mm = &m->sml_next;
+ continue; /* found local attr */
+ }
+ if(m->sml_op == LDAP_MOD_DELETE) {
+ for(a = re->e_attrs; a; a = a->a_next)
+ if(a->a_desc == m->sml_desc) break;
+ /* not found remote attr */
+ if(!a) {
+ erc = LDAP_NO_SUCH_ATTRIBUTE;
+ goto release;
+ }
+ if(ov->strict) {
+ erc = LDAP_CONSTRAINT_VIOLATION;
+ goto release;
+ }
+ Debug(LDAP_DEBUG_TRACE,
+ "=> translucent_modify: silently dropping delete: %s\n",
+ m->sml_desc->ad_cname.bv_val );
+ *mm = m->sml_next;
+ m->sml_next = NULL;
+ slap_mods_free(m, 1);
+ continue;
+ }
+ m->sml_op = LDAP_MOD_ADD;
+ mm = &m->sml_next;
+ }
+ erc = SLAP_CB_CONTINUE;
+release:
+ if(re) {
+ if(ov->db.bd_info->bi_entry_release_rw) {
+ op->o_bd = &ov->db;
+ ov->db.bd_info->bi_entry_release_rw(op, re, 0);
+ op->o_bd = db;
+ } else
+ entry_free(re);
+ }
+ op->o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
+ be_entry_release_r(op, e);
+ op->o_bd->bd_info = (BackendInfo *) on;
+ if(erc == SLAP_CB_CONTINUE) {
+ return(erc);
+ } else if(erc) {
+ send_ldap_error(op, rs, erc,
+ "attempt to delete nonexistent attribute");
+ return(erc);
+ }
+ }
+
+ /* don't leak remote entry copy */
+ if(re) {
+ if(ov->db.bd_info->bi_entry_release_rw) {
+ op->o_bd = &ov->db;
+ ov->db.bd_info->bi_entry_release_rw(op, re, 0);
+ op->o_bd = db;
+ } else
+ entry_free(re);
+ }
+/*
+** foreach Modification:
+** if MOD_ADD or MOD_REPLACE, add Attribute;
+** if no Modifications were suitable:
+** if strict, throw CONSTRAINT_VIOLATION;
+** else, return early SUCCESS;
+** fabricate Entry with new Attribute chain;
+** glue_parent() for this Entry;
+** call bi_op_add() in local backend;
+**
+*/
+
+ Debug(LDAP_DEBUG_TRACE, "=> translucent_modify: fabricating local add\n" );
+ a = NULL;
+ for(del = 0, ax = NULL, m = op->orm_modlist; m; m = m->sml_next) {
+ Attribute atmp;
+ if(((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_ADD) &&
+ ((m->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)) {
+ Debug(LDAP_DEBUG_ANY,
+ "=> translucent_modify: silently dropped modification(%d): %s\n",
+ m->sml_op, m->sml_desc->ad_cname.bv_val );
+ if((m->sml_op & LDAP_MOD_OP) == LDAP_MOD_DELETE) del++;
+ continue;
+ }
+ atmp.a_desc = m->sml_desc;
+ atmp.a_vals = m->sml_values;
+ atmp.a_nvals = m->sml_nvalues ? m->sml_nvalues : atmp.a_vals;
+ atmp.a_numvals = m->sml_numvals;
+ atmp.a_flags = 0;
+ a = attr_dup( &atmp );
+ a->a_next = ax;
+ ax = a;
+ }
+
+ if(del && ov->strict) {
+ attrs_free( a );
+ send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
+ "attempt to delete attributes from local database");
+ return(rs->sr_err);
+ }
+
+ if(!ax) {
+ if(ov->strict) {
+ send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
+ "modification contained other than ADD or REPLACE");
+ return(rs->sr_err);
+ }
+ /* rs->sr_text = "no valid modification found"; */
+ rs->sr_err = LDAP_SUCCESS;
+ send_ldap_result(op, rs);
+ return(rs->sr_err);
+ }
+
+ e = entry_alloc();
+ ber_dupbv( &e->e_name, &op->o_req_dn );
+ ber_dupbv( &e->e_nname, &op->o_req_ndn );
+ e->e_attrs = a;
+
+ op->o_tag = LDAP_REQ_ADD;
+ cb.sc_response = translucent_tag_cb;
+ cb.sc_private = op->orm_modlist;
+ op->oq_add.rs_e = e;
+
+ glue_parent(op);
+
+ cb.sc_next = op->o_callback;
+ op->o_callback = &cb;
+ rc = on->on_info->oi_orig->bi_op_add(op, &nrs);
+ if ( op->ora_e == e )
+ entry_free( e );
+ op->o_callback = cb.sc_next;
+
+ return(rc);
+}
+
+static int translucent_compare(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ AttributeAssertion *ava = op->orc_ava;
+ Entry *e = NULL;
+ BackendDB *db;
+ int rc;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_compare: <%s> %s:%s\n",
+ op->o_req_dn.bv_val, ava->aa_desc->ad_cname.bv_val, ava->aa_value.bv_val);
+
+/*
+** if the local backend has an entry for this attribute:
+** CONTINUE and let it do the compare;
+**
+*/
+ rc = overlay_entry_get_ov(op, &op->o_req_ndn, NULL, ava->aa_desc, 0, &e, on);
+ if(rc == LDAP_SUCCESS && e) {
+ overlay_entry_release_ov(op, e, 0, on);
+ return(SLAP_CB_CONTINUE);
+ }
+
+ if(ov->defer_db_open) {
+ send_ldap_error(op, rs, LDAP_UNAVAILABLE,
+ "remote DB not available");
+ return(rs->sr_err);
+ }
+/*
+** call compare() in the captive backend;
+** return the result;
+**
+*/
+ db = op->o_bd;
+ op->o_bd = &ov->db;
+ ov->db.be_acl = op->o_bd->be_acl;
+ rc = ov->db.bd_info->bi_op_compare(op, rs);
+ op->o_bd = db;
+
+ return(rc);
+}
+
+static int translucent_pwmod(Operation *op, SlapReply *rs) {
+ SlapReply nrs = { REP_RESULT };
+ Operation nop;
+
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ Entry *e = NULL, *re = NULL;
+ BackendDB *db;
+ int rc = 0;
+ slap_callback cb = { 0 };
+
+ if (!ov->pwmod_local) {
+ rs->sr_err = LDAP_CONSTRAINT_VIOLATION,
+ rs->sr_text = "attempt to modify password in local database";
+ return rs->sr_err;
+ }
+
+/*
+** fetch entry from the captive backend;
+** if it did not exist, fail;
+** release it, if captive backend supports this;
+**
+*/
+ db = op->o_bd;
+ op->o_bd = &ov->db;
+ ov->db.be_acl = op->o_bd->be_acl;
+ rc = ov->db.bd_info->bi_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &re);
+ if(rc != LDAP_SUCCESS || re == NULL ) {
+ send_ldap_error((op), rs, LDAP_NO_SUCH_OBJECT,
+ "attempt to modify nonexistent local record");
+ return(rs->sr_err);
+ }
+ op->o_bd = db;
+/*
+** fetch entry from local backend;
+** if it exists:
+** return CONTINUE;
+*/
+
+ op->o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
+ rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
+ op->o_bd->bd_info = (BackendInfo *) on;
+
+ if(e && rc == LDAP_SUCCESS) {
+ if(re) {
+ if(ov->db.bd_info->bi_entry_release_rw) {
+ op->o_bd = &ov->db;
+ ov->db.bd_info->bi_entry_release_rw(op, re, 0);
+ op->o_bd = db;
+ } else {
+ entry_free(re);
+ }
+ }
+ op->o_bd->bd_info = (BackendInfo *) on->on_info->oi_orig;
+ be_entry_release_r(op, e);
+ op->o_bd->bd_info = (BackendInfo *) on;
+ return SLAP_CB_CONTINUE;
+ }
+
+ /* don't leak remote entry copy */
+ if(re) {
+ if(ov->db.bd_info->bi_entry_release_rw) {
+ op->o_bd = &ov->db;
+ ov->db.bd_info->bi_entry_release_rw(op, re, 0);
+ op->o_bd = db;
+ } else {
+ entry_free(re);
+ }
+ }
+/*
+** glue_parent() for this Entry;
+** call bi_op_add() in local backend;
+**
+*/
+ e = entry_alloc();
+ ber_dupbv( &e->e_name, &op->o_req_dn );
+ ber_dupbv( &e->e_nname, &op->o_req_ndn );
+ e->e_attrs = NULL;
+
+ nop = *op;
+ nop.o_tag = LDAP_REQ_ADD;
+ cb.sc_response = slap_null_cb;
+ nop.oq_add.rs_e = e;
+
+ glue_parent(&nop);
+
+ nop.o_callback = &cb;
+ rc = on->on_info->oi_orig->bi_op_add(&nop, &nrs);
+ if ( nop.ora_e == e ) {
+ entry_free( e );
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ return SLAP_CB_CONTINUE;
+ }
+
+ return rc;
+}
+
+static int translucent_exop(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ const struct berval bv_exop_pwmod = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_exop: %s\n",
+ op->o_req_dn.bv_val );
+
+ if(ov->defer_db_open) {
+ send_ldap_error(op, rs, LDAP_UNAVAILABLE,
+ "remote DB not available");
+ return(rs->sr_err);
+ }
+
+ if ( bvmatch( &bv_exop_pwmod, &op->ore_reqoid ) ) {
+ return translucent_pwmod( op, rs );
+ }
+
+ return SLAP_CB_CONTINUE;
+}
+
+/*
+** translucent_search_cb()
+** merge local data with remote data
+**
+** Four cases:
+** 1: remote search, no local filter
+** merge data and send immediately
+** 2: remote search, with local filter
+** merge data and save
+** 3: local search, no remote filter
+** merge data and send immediately
+** 4: local search, with remote filter
+** check list, merge, send, delete
+*/
+
+#define RMT_SIDE 0
+#define LCL_SIDE 1
+#define USE_LIST 2
+
+typedef struct trans_ctx {
+ BackendDB *db;
+ slap_overinst *on;
+ Filter *orig;
+ TAvlnode *list;
+ int step;
+ int slimit;
+ AttributeName *attrs;
+} trans_ctx;
+
+static int translucent_search_cb(Operation *op, SlapReply *rs) {
+ trans_ctx *tc;
+ BackendDB *db;
+ slap_overinst *on;
+ translucent_info *ov;
+ Entry *le, *re;
+ Attribute *a, *ax, *an, *as = NULL;
+ int rc;
+ int test_f = 0;
+
+ tc = op->o_callback->sc_private;
+
+ /* Don't let the op complete while we're gathering data */
+ if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
+ return 0;
+
+ if(rs->sr_type != REP_SEARCH || !rs->sr_entry)
+ return(SLAP_CB_CONTINUE);
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
+ rs->sr_entry->e_name.bv_val );
+
+ op->ors_slimit = tc->slimit + ( tc->slimit > 0 ? 1 : 0 );
+ if ( op->ors_attrs == slap_anlist_all_attributes ) {
+ op->ors_attrs = tc->attrs;
+ rs->sr_attrs = tc->attrs;
+ rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
+ }
+
+ on = tc->on;
+ ov = on->on_bi.bi_private;
+
+ db = op->o_bd;
+ re = NULL;
+
+ /* If we have local, get remote */
+ if ( tc->step & LCL_SIDE ) {
+ le = rs->sr_entry;
+ /* If entry is already on list, use it */
+ if ( tc->step & USE_LIST ) {
+ re = ldap_tavl_delete( &tc->list, le, entry_dn_cmp );
+ if ( re ) {
+ rs_flush_entry( op, rs, on );
+ rc = test_filter( op, re, tc->orig );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
+ rs->sr_entry = re;
+
+ if ( tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
+ return LDAP_SIZELIMIT_EXCEEDED;
+ }
+
+ return SLAP_CB_CONTINUE;
+ } else {
+ entry_free( re );
+ rs->sr_entry = NULL;
+ return 0;
+ }
+ }
+ }
+ op->o_bd = &ov->db;
+ rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
+ if ( rc == LDAP_SUCCESS && re ) {
+ Entry *tmp = entry_dup( re );
+ be_entry_release_r( op, re );
+ re = tmp;
+ test_f = 1;
+ }
+ } else {
+ /* Else we have remote, get local */
+ op->o_bd = tc->db;
+ le = NULL;
+ rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
+ if ( rc == LDAP_SUCCESS && le ) {
+ re = entry_dup( rs->sr_entry );
+ rs_flush_entry( op, rs, on );
+ } else {
+ le = NULL;
+ }
+ }
+
+/*
+** if we got remote and local entry:
+** foreach local attr:
+** foreach remote attr:
+** if match, remote attr with local attr;
+** if new local, add to list;
+** append new local attrs to remote;
+**
+*/
+
+ if ( re && le ) {
+ for(ax = le->e_attrs; ax; ax = ax->a_next) {
+ for(a = re->e_attrs; a; a = a->a_next) {
+ if(a->a_desc == ax->a_desc) {
+ test_f = 1;
+ if(a->a_vals != a->a_nvals)
+ ber_bvarray_free(a->a_nvals);
+ ber_bvarray_free(a->a_vals);
+ ber_bvarray_dup_x( &a->a_vals, ax->a_vals, NULL );
+ if ( ax->a_vals == ax->a_nvals ) {
+ a->a_nvals = a->a_vals;
+ } else {
+ ber_bvarray_dup_x( &a->a_nvals, ax->a_nvals, NULL );
+ }
+ break;
+ }
+ }
+ if(a) continue;
+ an = attr_dup(ax);
+ an->a_next = as;
+ as = an;
+ }
+ /* Dispose of local entry */
+ if ( tc->step & LCL_SIDE ) {
+ rs_flush_entry(op, rs, on);
+ } else {
+ overlay_entry_release_ov(op, le, 0, on);
+ }
+
+ /* literally append, so locals are always last */
+ if(as) {
+ if(re->e_attrs) {
+ for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
+ ax->a_next = as;
+ } else {
+ re->e_attrs = as;
+ }
+ }
+ /* If both filters, save entry for later */
+ if ( tc->step == (USE_LIST|RMT_SIDE) ) {
+ ldap_tavl_insert( &tc->list, re, entry_dn_cmp, ldap_avl_dup_error );
+ rs->sr_entry = NULL;
+ rc = 0;
+ } else {
+ /* send it now */
+ rs->sr_entry = re;
+ rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
+ if ( test_f ) {
+ rc = test_filter( op, rs->sr_entry, tc->orig );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rc = SLAP_CB_CONTINUE;
+ } else {
+ rc = 0;
+ }
+ } else {
+ rc = SLAP_CB_CONTINUE;
+ }
+ }
+ } else if ( le ) {
+ /* Only a local entry: remote was deleted
+ * Ought to delete the local too...
+ */
+ rc = 0;
+ } else if ( tc->step & USE_LIST ) {
+ /* Only a remote entry, but both filters:
+ * Test the complete filter
+ */
+ rc = test_filter( op, rs->sr_entry, tc->orig );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rc = SLAP_CB_CONTINUE;
+ } else {
+ rc = 0;
+ }
+ } else {
+ /* Only a remote entry, only remote filter:
+ * just pass thru
+ */
+ rc = SLAP_CB_CONTINUE;
+ }
+
+ op->o_bd = db;
+
+ if ( rc == SLAP_CB_CONTINUE && tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
+ return LDAP_SIZELIMIT_EXCEEDED;
+ }
+
+ return rc;
+}
+
+/* Dup the filter, excluding invalid elements */
+static Filter *
+trans_filter_dup(Operation *op, Filter *f, AttributeName *an)
+{
+ Filter *n = NULL;
+
+ if ( !f )
+ return NULL;
+
+ switch( f->f_choice & SLAPD_FILTER_MASK ) {
+ case SLAPD_FILTER_COMPUTED:
+ n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ n->f_choice = f->f_choice;
+ n->f_result = f->f_result;
+ n->f_next = NULL;
+ break;
+
+ case LDAP_FILTER_PRESENT:
+ if ( ad_inlist( f->f_desc, an )) {
+ n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ n->f_choice = f->f_choice;
+ n->f_desc = f->f_desc;
+ n->f_next = NULL;
+ }
+ break;
+
+ case LDAP_FILTER_EQUALITY:
+ case LDAP_FILTER_GE:
+ case LDAP_FILTER_LE:
+ case LDAP_FILTER_APPROX:
+ case LDAP_FILTER_EXT:
+ if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
+ AttributeAssertion *nava;
+
+ n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ n->f_choice = f->f_choice;
+
+ nava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
+ *nava = *f->f_ava;
+ n->f_ava = nava;
+
+ ber_dupbv_x( &n->f_av_value, &f->f_av_value, op->o_tmpmemctx );
+ n->f_next = NULL;
+ }
+ break;
+
+ case LDAP_FILTER_SUBSTRINGS:
+ if ( !f->f_av_desc || ad_inlist( f->f_av_desc, an )) {
+ SubstringsAssertion *nsub;
+
+ n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ n->f_choice = f->f_choice;
+
+ nsub = op->o_tmpalloc( sizeof(SubstringsAssertion), op->o_tmpmemctx );
+ *nsub = *f->f_sub;
+ n->f_sub = nsub;
+
+ if ( !BER_BVISNULL( &f->f_sub_initial ))
+ ber_dupbv_x( &n->f_sub_initial, &f->f_sub_initial, op->o_tmpmemctx );
+
+ ber_bvarray_dup_x( &n->f_sub_any, f->f_sub_any, op->o_tmpmemctx );
+
+ if ( !BER_BVISNULL( &f->f_sub_final ))
+ ber_dupbv_x( &n->f_sub_final, &f->f_sub_final, op->o_tmpmemctx );
+
+ n->f_next = NULL;
+ }
+ break;
+
+ case LDAP_FILTER_AND:
+ case LDAP_FILTER_OR:
+ case LDAP_FILTER_NOT: {
+ Filter **p;
+
+ n = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ n->f_choice = f->f_choice;
+ n->f_next = NULL;
+
+ for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
+ *p = trans_filter_dup( op, f, an );
+ if ( !*p )
+ continue;
+ p = &(*p)->f_next;
+ }
+ /* nothing valid in this list */
+ if ( !n->f_list ) {
+ op->o_tmpfree( n, op->o_tmpmemctx );
+ return NULL;
+ }
+ /* Only 1 element in this list */
+ if ((n->f_choice & SLAPD_FILTER_MASK) != LDAP_FILTER_NOT &&
+ !n->f_list->f_next ) {
+ f = n->f_list;
+ *n = *f;
+ op->o_tmpfree( f, op->o_tmpmemctx );
+ }
+ break;
+ }
+ }
+ return n;
+}
+
+static void
+trans_filter_free( Operation *op, Filter *f )
+{
+ Filter *n, *p, *next;
+
+ f->f_choice &= SLAPD_FILTER_MASK;
+
+ switch( f->f_choice ) {
+ case LDAP_FILTER_AND:
+ case LDAP_FILTER_OR:
+ case LDAP_FILTER_NOT:
+ /* Free in reverse order */
+ n = NULL;
+ for ( p = f->f_list; p; p = next ) {
+ next = p->f_next;
+ p->f_next = n;
+ n = p;
+ }
+ for ( p = n; p; p = next ) {
+ next = p->f_next;
+ trans_filter_free( op, p );
+ }
+ break;
+ case LDAP_FILTER_EQUALITY:
+ case LDAP_FILTER_GE:
+ case LDAP_FILTER_LE:
+ case LDAP_FILTER_APPROX:
+ case LDAP_FILTER_SUBSTRINGS:
+ case LDAP_FILTER_EXT:
+ op->o_tmpfree( f->f_av_value.bv_val, op->o_tmpmemctx );
+ op->o_tmpfree( f->f_ava, op->o_tmpmemctx );
+ break;
+ default:
+ break;
+ }
+ op->o_tmpfree( f, op->o_tmpmemctx );
+}
+
+static int
+translucent_search_cleanup( Operation *op, SlapReply *rs )
+{
+ trans_ctx *tc = op->o_callback->sc_private;
+
+ op->ors_filter = tc->orig;
+ return LDAP_SUCCESS;
+}
+
+/*
+** translucent_search()
+** search via captive backend;
+** override results with any local data;
+**
+*/
+
+static int translucent_search(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ slap_callback cb = { NULL, NULL, NULL, NULL };
+ trans_ctx tc;
+ Filter *fl, *fr;
+ struct berval fbv;
+ int rc = 0;
+
+ if ( op->o_managedsait > SLAP_CONTROL_IGNORED )
+ return SLAP_CB_CONTINUE;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_search: <%s> %s\n",
+ op->o_req_dn.bv_val, op->ors_filterstr.bv_val );
+
+ if(ov->defer_db_open) {
+ send_ldap_error(op, rs, LDAP_UNAVAILABLE,
+ "remote DB not available");
+ return(rs->sr_err);
+ }
+
+ fr = ov->remote ? trans_filter_dup( op, op->ors_filter, ov->remote ) : NULL;
+ fl = ov->local ? trans_filter_dup( op, op->ors_filter, ov->local ) : NULL;
+ cb.sc_response = (slap_response *) translucent_search_cb;
+ cb.sc_cleanup = (slap_response *) translucent_search_cleanup;
+ cb.sc_private = &tc;
+
+ ov->db.be_acl = op->o_bd->be_acl;
+ tc.db = op->o_bd;
+ tc.on = on;
+ tc.orig = op->ors_filter;
+ tc.list = NULL;
+ tc.step = 0;
+ tc.slimit = op->ors_slimit;
+ tc.attrs = NULL;
+ fbv = op->ors_filterstr;
+
+ if ( fr || !fl ) {
+ Operation op2;
+ Opheader oh;
+
+ op2 = *op;
+ oh = *op->o_hdr;
+ oh.oh_conn = op->o_conn;
+ oh.oh_connid = op->o_connid;
+ op2.o_bd = &ov->db;
+ op2.o_hdr = &oh;
+ op2.o_extra = op->o_extra;
+ op2.o_callback = &cb;
+
+ tc.attrs = op->ors_attrs;
+ op->ors_slimit = SLAP_NO_LIMIT;
+ op->ors_attrs = slap_anlist_all_attributes;
+ tc.step |= RMT_SIDE;
+ if ( fl ) {
+ tc.step |= USE_LIST;
+ op->ors_filter = fr;
+ filter2bv_x( op, fr, &op2.ors_filterstr );
+ }
+ rc = ov->db.bd_info->bi_op_search( &op2, rs );
+ if ( op->ors_attrs == slap_anlist_all_attributes )
+ op->ors_attrs = tc.attrs;
+ if ( fl ) {
+ op->o_tmpfree( op2.ors_filterstr.bv_val, op2.o_tmpmemctx );
+ }
+ }
+
+ cb.sc_next = op->o_callback;
+ op->o_callback = &cb;
+
+ if ( fl && !rc ) {
+ tc.step |= LCL_SIDE;
+ op->ors_filter = fl;
+ filter2bv_x( op, fl, &op->ors_filterstr );
+ rc = overlay_op_walk( op, rs, op_search, on->on_info, on->on_next );
+ op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+ }
+ op->ors_filterstr = fbv;
+ op->o_callback = cb.sc_next;
+ rs->sr_attrs = op->ors_attrs;
+ rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
+
+ /* Send out anything remaining on the list and finish */
+ if ( tc.step & USE_LIST ) {
+ if ( tc.list ) {
+ TAvlnode *av;
+
+ av = ldap_tavl_end( tc.list, TAVL_DIR_LEFT );
+ while ( av ) {
+ rs->sr_entry = av->avl_data;
+ if ( rc == LDAP_SUCCESS && LDAP_COMPARE_TRUE ==
+ test_filter( op, rs->sr_entry, op->ors_filter ))
+ {
+ rs->sr_flags = REP_ENTRY_MUSTBEFREED;
+ rc = send_search_entry( op, rs );
+ } else {
+ entry_free( rs->sr_entry );
+ }
+ av = ldap_tavl_next( av, TAVL_DIR_RIGHT );
+ }
+ ldap_tavl_free( tc.list, NULL );
+ rs->sr_flags = 0;
+ rs->sr_entry = NULL;
+ }
+ send_ldap_result( op, rs );
+ }
+
+ op->ors_slimit = tc.slimit;
+
+ /* Free in reverse order */
+ if ( fl )
+ trans_filter_free( op, fl );
+ if ( fr )
+ trans_filter_free( op, fr );
+
+ return rc;
+}
+
+
+/*
+** translucent_bind()
+** pass bind request to captive backend;
+**
+*/
+
+static int translucent_bind(Operation *op, SlapReply *rs) {
+ slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ BackendDB *db;
+ slap_callback sc = { 0 }, *save_cb;
+ int rc;
+
+ Debug(LDAP_DEBUG_TRACE, "translucent_bind: <%s> method %d\n",
+ op->o_req_dn.bv_val, op->orb_method );
+
+ if(ov->defer_db_open) {
+ send_ldap_error(op, rs, LDAP_UNAVAILABLE,
+ "remote DB not available");
+ return(rs->sr_err);
+ }
+
+ if (ov->bind_local) {
+ sc.sc_response = slap_null_cb;
+ save_cb = op->o_callback;
+ op->o_callback = &sc;
+ }
+
+ db = op->o_bd;
+ op->o_bd = &ov->db;
+ ov->db.be_acl = op->o_bd->be_acl;
+ rc = ov->db.bd_info->bi_op_bind(op, rs);
+ op->o_bd = db;
+
+ if (ov->bind_local) {
+ op->o_callback = save_cb;
+ if (rc != LDAP_SUCCESS) {
+ rc = SLAP_CB_CONTINUE;
+ }
+ }
+
+ return rc;
+}
+
+/*
+** translucent_connection_destroy()
+** pass disconnect notification to captive backend;
+**
+*/
+
+static int translucent_connection_destroy(BackendDB *be, Connection *conn) {
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ int rc = 0;
+
+ Debug(LDAP_DEBUG_TRACE, "translucent_connection_destroy\n" );
+
+ rc = ov->db.bd_info->bi_connection_destroy(&ov->db, conn);
+
+ return(rc);
+}
+
+/*
+** translucent_db_config()
+** pass config directives to captive backend;
+** parse unrecognized directives ourselves;
+**
+*/
+
+static int translucent_db_config(
+ BackendDB *be,
+ const char *fname,
+ int lineno,
+ int argc,
+ char **argv
+)
+{
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_db_config: %s\n",
+ argc ? argv[0] : "" );
+
+ /* Something for the captive database? */
+ if ( ov->db.bd_info && ov->db.bd_info->bi_db_config )
+ return ov->db.bd_info->bi_db_config( &ov->db, fname, lineno,
+ argc, argv );
+ return SLAP_CONF_UNKNOWN;
+}
+
+/*
+** translucent_db_init()
+** initialize the captive backend;
+**
+*/
+
+static int translucent_db_init(BackendDB *be, ConfigReply *cr) {
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_db_init\n" );
+
+ ov = ch_calloc(1, sizeof(translucent_info));
+ on->on_bi.bi_private = ov;
+ ov->db = *be;
+ ov->db.be_private = NULL;
+ ov->defer_db_open = 1;
+
+ if ( !backend_db_init( "ldap", &ov->db, -1, NULL )) {
+ Debug( LDAP_DEBUG_CONFIG, "translucent: unable to open captive back-ldap\n" );
+ return 1;
+ }
+ SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
+ SLAP_DBFLAGS(be) |= SLAP_DBFLAG_NOLASTMOD;
+
+ return 0;
+}
+
+/*
+** translucent_db_open()
+** if the captive backend has an open() method, call it;
+**
+*/
+
+static int translucent_db_open(BackendDB *be, ConfigReply *cr) {
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ int rc;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_db_open\n" );
+
+ /* need to inherit something from the original database... */
+ ov->db.be_def_limit = be->be_def_limit;
+ ov->db.be_limits = be->be_limits;
+ ov->db.be_acl = be->be_acl;
+ ov->db.be_dfltaccess = be->be_dfltaccess;
+
+ if ( ov->defer_db_open )
+ return 0;
+
+ rc = backend_startup_one( &ov->db, cr );
+
+ if(rc) Debug(LDAP_DEBUG_TRACE,
+ "translucent: bi_db_open() returned error %d\n", rc );
+
+ return(rc);
+}
+
+/*
+** translucent_db_close()
+** if the captive backend has a close() method, call it
+**
+*/
+
+static int
+translucent_db_close( BackendDB *be, ConfigReply *cr )
+{
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ int rc = 0;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_db_close\n" );
+
+ if ( ov && ov->db.bd_info && ov->db.bd_info->bi_db_close ) {
+ rc = ov->db.bd_info->bi_db_close(&ov->db, NULL);
+ }
+
+ return(rc);
+}
+
+/*
+** translucent_db_destroy()
+** if the captive backend has a db_destroy() method, call it;
+** free any config data
+**
+*/
+
+static int
+translucent_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ translucent_info *ov = on->on_bi.bi_private;
+ int rc = 0;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_db_destroy\n" );
+
+ if ( ov ) {
+ if ( ov->remote )
+ anlist_free( ov->remote, 1, NULL );
+ if ( ov->local )
+ anlist_free( ov->local, 1, NULL );
+ if ( ov->db.be_private != NULL ) {
+ backend_stopdown_one( &ov->db );
+ }
+
+ ldap_pvt_thread_mutex_destroy( &ov->db.be_pcsn_st.be_pcsn_mutex );
+ ch_free(ov);
+ on->on_bi.bi_private = NULL;
+ }
+
+ return(rc);
+}
+
+/*
+** translucent_initialize()
+** initialize the slap_overinst with our entry points;
+**
+*/
+
+int translucent_initialize() {
+
+ int rc;
+
+ /* olcDatabaseDummy is defined in slapd, and Windows
+ will not let us initialize a struct element with a data pointer
+ from another library, so we have to initialize this element
+ "by hand". */
+ translucentocs[1].co_table = olcDatabaseDummy;
+
+ Debug(LDAP_DEBUG_TRACE, "==> translucent_initialize\n" );
+
+ translucent.on_bi.bi_type = "translucent";
+ translucent.on_bi.bi_db_init = translucent_db_init;
+ translucent.on_bi.bi_db_config = translucent_db_config;
+ translucent.on_bi.bi_db_open = translucent_db_open;
+ translucent.on_bi.bi_db_close = translucent_db_close;
+ translucent.on_bi.bi_db_destroy = translucent_db_destroy;
+ translucent.on_bi.bi_op_bind = translucent_bind;
+ translucent.on_bi.bi_op_add = translucent_add;
+ translucent.on_bi.bi_op_modify = translucent_modify;
+ translucent.on_bi.bi_op_modrdn = translucent_modrdn;
+ translucent.on_bi.bi_op_delete = translucent_delete;
+ translucent.on_bi.bi_op_search = translucent_search;
+ translucent.on_bi.bi_op_compare = translucent_compare;
+ translucent.on_bi.bi_connection_destroy = translucent_connection_destroy;
+ translucent.on_bi.bi_extended = translucent_exop;
+
+ translucent.on_bi.bi_cf_ocs = translucentocs;
+ rc = config_register_schema ( translucentcfg, translucentocs );
+ if ( rc ) return rc;
+
+ return(overlay_register(&translucent));
+}
+
+#if SLAPD_OVER_TRANSLUCENT == SLAPD_MOD_DYNAMIC && defined(PIC)
+int init_module(int argc, char *argv[]) {
+ return translucent_initialize();
+}
+#endif
+
+#endif /* SLAPD_OVER_TRANSLUCENT */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-06 13:43:48 +0000