openldap/servers/slapd/back-bdb/bind.c
2003-04-22 17:00:04 +00:00

270 lines
6.2 KiB
C

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