diff options
Diffstat (limited to '')
| -rw-r--r-- | servers/slapd/back-bdb/referral.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/servers/slapd/back-bdb/referral.c b/servers/slapd/back-bdb/referral.c new file mode 100644 index 0000000..2ebaaa7 --- /dev/null +++ b/servers/slapd/back-bdb/referral.c @@ -0,0 +1,152 @@ +/* referral.c - BDB backend referral handler */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2000-2018 The OpenLDAP Foundation. + * 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>. + */ + +#include "portable.h" +#include <stdio.h> +#include <ac/string.h> + +#include "back-bdb.h" + +int +bdb_referrals( Operation *op, SlapReply *rs ) +{ + struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private; + Entry *e = NULL; + EntryInfo *ei; + int rc = LDAP_SUCCESS; + + DB_TXN *rtxn; + DB_LOCK lock; + + if( op->o_tag == LDAP_REQ_SEARCH ) { + /* let search take care of itself */ + return rc; + } + + if( get_manageDSAit( op ) ) { + /* let op take care of DSA management */ + return rc; + } + + rc = bdb_reader_get(op, bdb->bi_dbenv, &rtxn); + switch(rc) { + case 0: + break; + default: + return LDAP_OTHER; + } + +dn2entry_retry: + /* get entry */ + rc = bdb_dn2entry( op, rtxn, &op->o_req_ndn, &ei, 1, &lock ); + + /* bdb_dn2entry() may legally leave ei == NULL + * if rc != 0 and rc != DB_NOTFOUND + */ + if ( ei ) { + e = ei->bei_e; + } + + switch(rc) { + case DB_NOTFOUND: + case 0: + break; + case LDAP_BUSY: + rs->sr_text = "ldap server busy"; + return LDAP_BUSY; + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto dn2entry_retry; + default: + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_referrals) + ": dn2entry failed: %s (%d)\n", + db_strerror(rc), rc, 0 ); + rs->sr_text = "internal error"; + return LDAP_OTHER; + } + + if ( rc == DB_NOTFOUND ) { + rc = LDAP_SUCCESS; + rs->sr_matched = NULL; + if ( e != NULL ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_referrals) + ": tag=%lu target=\"%s\" matched=\"%s\"\n", + (unsigned long)op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val ); + + if( is_entry_referral( e ) ) { + BerVarray ref = get_entry_referrals( op, e ); + rc = LDAP_OTHER; + rs->sr_ref = referral_rewrite( ref, &e->e_name, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + ber_bvarray_free( ref ); + if ( rs->sr_ref ) { + rs->sr_matched = ber_strdup_x( + e->e_name.bv_val, op->o_tmpmemctx ); + } + } + + bdb_cache_return_entry_r (bdb, e, &lock); + e = NULL; + } + + if( rs->sr_ref != NULL ) { + /* send referrals */ + rc = rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + ber_bvarray_free( rs->sr_ref ); + rs->sr_ref = NULL; + } else if ( rc != LDAP_SUCCESS ) { + rs->sr_text = rs->sr_matched ? "bad referral object" : NULL; + } + + if (rs->sr_matched) { + op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx ); + rs->sr_matched = NULL; + } + return rc; + } + + if ( is_entry_referral( e ) ) { + /* entry is a referral */ + BerVarray refs = get_entry_referrals( op, e ); + rs->sr_ref = referral_rewrite( + refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_referrals) + ": tag=%lu target=\"%s\" matched=\"%s\"\n", + (unsigned long)op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val ); + + rs->sr_matched = e->e_name.bv_val; + if( rs->sr_ref != NULL ) { + rc = rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + ber_bvarray_free( rs->sr_ref ); + rs->sr_ref = NULL; + } else { + rc = LDAP_OTHER; + rs->sr_text = "bad referral object"; + } + + rs->sr_matched = NULL; + ber_bvarray_free( refs ); + } + + bdb_cache_return_entry_r(bdb, e, &lock); + return rc; +} |