diff options
Diffstat (limited to 'servers/slapd/back-mdb/bind.c')
| -rw-r--r-- | servers/slapd/back-mdb/bind.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/servers/slapd/back-mdb/bind.c b/servers/slapd/back-mdb/bind.c new file mode 100644 index 0000000..283cd5f --- /dev/null +++ b/servers/slapd/back-mdb/bind.c @@ -0,0 +1,158 @@ +/* bind.c - mdb 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-mdb.h" + +int +mdb_bind( Operation *op, SlapReply *rs ) +{ + struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private; + Entry *e; + Attribute *a; + + AttributeDescription *password = slap_schema.si_ad_userPassword; + + MDB_txn *rtxn; + mdb_op_info opinfo = {{{0}}}, *moi = &opinfo; + + Debug( LDAP_DEBUG_ARGS, + "==> " LDAP_XSTRING(mdb_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 = mdb_opinfo_get(op, mdb, 1, &moi); + switch(rs->sr_err) { + case 0: + break; + default: + rs->sr_text = "internal error"; + send_ldap_result( op, rs ); + return rs->sr_err; + } + + rtxn = moi->moi_txn; + + /* get entry with reader lock */ + rs->sr_err = mdb_dn2entry( op, rtxn, NULL, &op->o_req_ndn, &e, NULL, 0 ); + + switch(rs->sr_err) { + case MDB_NOTFOUND: + rs->sr_err = LDAP_INVALID_CREDENTIALS; + goto done; + case 0: + break; + case LDAP_BUSY: + rs->sr_text = "ldap_server_busy"; + goto done; + default: + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto done; + } + + 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: + if ( moi == &opinfo ) { + mdb_txn_reset( moi->moi_txn ); + LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next ); + } else { + moi->moi_ref--; + } + /* free entry and reader lock */ + if( e != NULL ) { + mdb_entry_return( op, e ); + } + + 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; +} |