diff options
Diffstat (limited to 'servers/slapd/back-bdb/bind.c')
| -rw-r--r-- | servers/slapd/back-bdb/bind.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/servers/slapd/back-bdb/bind.c b/servers/slapd/back-bdb/bind.c new file mode 100644 index 0000000..1daf537 --- /dev/null +++ b/servers/slapd/back-bdb/bind.c @@ -0,0 +1,166 @@ +/* bind.c - bdb backend bind routine */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2000-2021 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 <ac/unistd.h> + +#include "back-bdb.h" + +int +bdb_bind( Operation *op, SlapReply *rs ) +{ + struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private; + Entry *e; + Attribute *a; + EntryInfo *ei; + + AttributeDescription *password = slap_schema.si_ad_userPassword; + + DB_TXN *rtxn; + DB_LOCK lock; + + Debug( LDAP_DEBUG_ARGS, + "==> " LDAP_XSTRING(bdb_bind) ": dn: %s\n", + op->o_req_dn.bv_val, 0, 0); + + /* allow noauth binds */ + switch ( be_rootdn_bind( op, NULL ) ) { + case LDAP_SUCCESS: + /* frontend will send result */ + return rs->sr_err = LDAP_SUCCESS; + + default: + /* give the database a chance */ + /* NOTE: this behavior departs from that of other backends, + * since the others, in case of password checking failure + * do not give the database a chance. If an entry with + * rootdn's name does not exist in the database the result + * will be the same. See ITS#4962 for discussion. */ + break; + } + + rs->sr_err = bdb_reader_get(op, bdb->bi_dbenv, &rtxn); + switch(rs->sr_err) { + case 0: + break; + default: + rs->sr_text = "internal error"; + send_ldap_result( op, rs ); + return rs->sr_err; + } + +dn2entry_retry: + /* get entry with reader lock */ + rs->sr_err = bdb_dn2entry( op, rtxn, &op->o_req_ndn, &ei, 1, + &lock ); + + switch(rs->sr_err) { + case DB_NOTFOUND: + case 0: + break; + case LDAP_BUSY: + send_ldap_error( op, rs, LDAP_BUSY, "ldap_server_busy" ); + return LDAP_BUSY; + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto dn2entry_retry; + default: + send_ldap_error( op, rs, LDAP_OTHER, "internal error" ); + return rs->sr_err; + } + + e = ei->bei_e; + if ( rs->sr_err == DB_NOTFOUND ) { + if( e != NULL ) { + bdb_cache_return_entry_r( bdb, e, &lock ); + e = NULL; + } + + rs->sr_err = LDAP_INVALID_CREDENTIALS; + send_ldap_result( op, rs ); + + return rs->sr_err; + } + + ber_dupbv( &op->oq_bind.rb_edn, &e->e_name ); + + /* check for deleted */ + if ( is_entry_subentry( e ) ) { + /* entry is an subentry, don't allow bind */ + Debug( LDAP_DEBUG_TRACE, "entry is subentry\n", 0, + 0, 0 ); + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + } + + if ( is_entry_alias( e ) ) { + /* entry is an alias, don't allow bind */ + Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 ); + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + } + + if ( is_entry_referral( e ) ) { + Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, + 0, 0 ); + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + } + + switch ( op->oq_bind.rb_method ) { + case LDAP_AUTH_SIMPLE: + a = attr_find( e->e_attrs, password ); + if ( a == NULL ) { + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + } + + if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred, + &rs->sr_text ) != 0 ) + { + /* failure; stop front end from sending result */ + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + } + + rs->sr_err = 0; + break; + + default: + assert( 0 ); /* should not be reachable */ + rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED; + rs->sr_text = "authentication method not supported"; + } + +done: + /* free entry and reader lock */ + if( e != NULL ) { + bdb_cache_return_entry_r( bdb, e, &lock ); + } + + if ( rs->sr_err ) { + send_ldap_result( op, rs ); + if ( rs->sr_ref ) { + ber_bvarray_free( rs->sr_ref ); + rs->sr_ref = NULL; + } + } + /* front end will send result on success (rs->sr_err==0) */ + return rs->sr_err; +} |