/* $NetBSD: bind.c,v 1.1.1.6.6.1 2019/08/10 06:17:17 martin Exp $ */ /* bind.c - bdb backend bind routine */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2000-2019 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 * . */ #include __RCSID("$NetBSD: bind.c,v 1.1.1.6.6.1 2019/08/10 06:17:17 martin Exp $"); #include "portable.h" #include #include #include #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; }