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https://git.openldap.org/openldap/openldap.git
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270 lines
6.2 KiB
C
270 lines
6.2 KiB
C
/* bind.c - bdb backend bind routine */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/krb.h>
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#include <ac/string.h>
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#include <ac/unistd.h>
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#include "back-bdb.h"
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#include "external.h"
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int
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bdb_bind( Operation *op, SlapReply *rs )
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{
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struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
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Entry *e;
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Attribute *a;
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EntryInfo *ei;
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
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char krbname[MAX_K_NAME_SZ + 1];
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AttributeDescription *krbattr = slap_schema.si_ad_krbName;
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struct berval krbval;
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AUTH_DAT ad;
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#endif
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AttributeDescription *password = slap_schema.si_ad_userPassword;
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u_int32_t locker;
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DB_LOCK lock;
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, ARGS, "==> bdb_bind: dn: %s\n", op->o_req_dn.bv_val, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ARGS, "==> bdb_bind: dn: %s\n", op->o_req_dn.bv_val, 0, 0);
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#endif
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/* allow noauth binds */
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if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE && be_isroot_pw( op )) {
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ber_dupbv( &op->oq_bind.rb_edn, be_root_dn( op->o_bd ) );
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/* front end will send result */
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return LDAP_SUCCESS;
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}
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rs->sr_err = LOCK_ID(bdb->bi_dbenv, &locker);
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switch(rs->sr_err) {
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case 0:
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break;
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default:
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rs->sr_text = "internal error";
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send_ldap_result( op, rs );
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return rs->sr_err;
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}
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dn2entry_retry:
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/* get entry with reader lock */
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rs->sr_err = bdb_dn2entry( op, NULL, &op->o_req_ndn, &ei, 1,
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locker, &lock );
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switch(rs->sr_err) {
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case DB_NOTFOUND:
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case 0:
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break;
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case LDAP_BUSY:
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send_ldap_error( op, rs, LDAP_BUSY, "ldap_server_busy" );
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LOCK_ID_FREE(bdb->bi_dbenv, locker);
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return LDAP_BUSY;
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case DB_LOCK_DEADLOCK:
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case DB_LOCK_NOTGRANTED:
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goto dn2entry_retry;
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default:
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send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
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LOCK_ID_FREE(bdb->bi_dbenv, locker);
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return rs->sr_err;
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}
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e = ei->bei_e;
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if ( rs->sr_err == DB_NOTFOUND ) {
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if( e != NULL ) {
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rs->sr_ref = is_entry_referral( e )
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? get_entry_referrals( op, e )
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: NULL;
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if (rs->sr_ref)
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rs->sr_matched = ch_strdup( e->e_name.bv_val );
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bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
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e = NULL;
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} else {
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rs->sr_ref = referral_rewrite( default_referral,
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NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
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}
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if ( rs->sr_ref != NULL ) {
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rs->sr_err = LDAP_REFERRAL;
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send_ldap_result( op, rs );
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free( (char *)rs->sr_matched );
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ber_bvarray_free( rs->sr_ref );
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rs->sr_ref = NULL;
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rs->sr_matched = NULL;
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} else {
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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send_ldap_result( op, rs );
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}
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LOCK_ID_FREE(bdb->bi_dbenv, locker);
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return rs->sr_err;
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}
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ber_dupbv( &op->oq_bind.rb_edn, &e->e_name );
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/* check for deleted */
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#ifdef BDB_SUBENTRIES
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if ( is_entry_subentry( e ) ) {
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/* entry is an subentry, don't allow bind */
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, DETAIL1,
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"bdb_bind: entry is subentry\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE, "entry is subentry\n", 0,
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0, 0 );
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#endif
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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send_ldap_result( op, rs );
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goto done;
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}
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#endif
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#ifdef BDB_ALIASES
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if ( is_entry_alias( e ) ) {
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/* entry is an alias, don't allow bind */
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, DETAIL1, "bdb_bind: entry is alias\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0,
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0, 0 );
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#endif
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send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM, "entry is alias");
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goto done;
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}
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#endif
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if ( is_entry_referral( e ) ) {
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/* entry is a referral, don't allow bind */
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rs->sr_ref = get_entry_referrals( op, e );
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, DETAIL1,
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"bdb_bind: entry is referral\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
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0, 0 );
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#endif
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if( rs->sr_ref != NULL ) {
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rs->sr_err = LDAP_REFERRAL;
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rs->sr_matched = e->e_name.bv_val;
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send_ldap_result( op, rs );
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ber_bvarray_free( rs->sr_ref );
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rs->sr_ref = NULL;
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rs->sr_matched = NULL;
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} else {
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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send_ldap_result( op, rs );
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}
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goto done;
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}
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switch ( op->oq_bind.rb_method ) {
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case LDAP_AUTH_SIMPLE:
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rs->sr_err = access_allowed( op, e,
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password, NULL, ACL_AUTH, NULL );
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if ( ! rs->sr_err ) {
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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send_ldap_result( op, rs );
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goto done;
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}
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if ( (a = attr_find( e->e_attrs, password )) == NULL ) {
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rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
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send_ldap_result( op, rs );
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goto done;
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}
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if ( slap_passwd_check( op->o_conn, a, &op->oq_bind.rb_cred, &rs->sr_text ) != 0 ) {
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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send_ldap_result( op, rs );
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goto done;
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}
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rs->sr_err = 0;
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break;
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
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case LDAP_AUTH_KRBV41:
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if ( krbv4_ldap_auth( op->o_bd, &op->oq_bind.rb_cred, &ad ) != LDAP_SUCCESS ) {
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rs->sr_err = LDAP_INVALID_CREDENTIALS,
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send_ldap_result( op );
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goto done;
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}
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rs->sr_err = access_allowed( op, e,
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krbattr, NULL, ACL_AUTH, NULL );
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if ( ! rs->sr_err ) {
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS,
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send_ldap_result( op );
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goto done;
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}
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krbval.bv_len = sprintf( krbname, "%s%s%s@%s", ad.pname, *ad.pinst ? "."
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: "", ad.pinst, ad.prealm );
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if ( (a = attr_find( e->e_attrs, krbattr )) == NULL ) {
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/*
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* no krbname values present: check against DN
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*/
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if ( strcasecmp( op->o_req_dn.bv_val, krbname ) == 0 ) {
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rs->sr_err = 0;
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break;
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}
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rs->sr_err = LDAP_INAPPROPRIATE_AUTH,
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send_ldap_result( op );
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goto done;
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} else { /* look for krbname match */
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krbval.bv_val = krbname;
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if ( value_find( a->a_desc, a->a_vals, &krbval ) != 0 ) {
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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send_ldap_result( op );
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goto done;
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}
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}
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rs->sr_err = 0;
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break;
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case LDAP_AUTH_KRBV42:
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"Kerberos bind step 2 not supported" );
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goto done;
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#endif
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default:
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send_ldap_error( op, rs, LDAP_STRONG_AUTH_NOT_SUPPORTED,
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"authentication method not supported" );
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goto done;
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}
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done:
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/* free entry and reader lock */
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if( e != NULL ) {
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bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
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}
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LOCK_ID_FREE(bdb->bi_dbenv, locker);
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/* front end will send result on success (rs->sr_err==0) */
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return rs->sr_err;
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}
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