/*
 *	 Copyright 1999, Dmitry Kovalev <mit@openldap.org>, All rights reserved.
 *
 *	 Redistribution and use in source and binary forms are permitted only
 *	 as authorized by the OpenLDAP Public License.	A copy of this
 *	 license is available at http://www.OpenLDAP.org/license.html or
 *	 in file LICENSE in the top-level directory of the distribution.
 */

#include "portable.h"

#ifdef SLAPD_SQL

#include <stdio.h>
#include <sys/types.h>
#include "slap.h"
#include "back-sql.h"
#include "sql-wrap.h"
#include "util.h"
#include "entry-id.h"

int 
backsql_bind( Operation *op, SlapReply *rs )
{
	backsql_info		*bi = (backsql_info*)op->o_bd->be_private;
	backsql_entryID		user_id;
	SQLHDBC			dbh;
	AttributeDescription	*password = slap_schema.si_ad_userPassword;
	Entry			*e, user_entry;
	Attribute		*a;
	backsql_srch_info	bsi;
	AttributeName		anlist[2];
	int			rc;
 
 	Debug( LDAP_DEBUG_TRACE, "==>backsql_bind()\n", 0, 0, 0 );

	if ( be_isroot_pw( op ) ) {
     		ber_dupbv( &op->oq_bind.rb_edn, be_root_dn( op->o_bd ) );
		Debug( LDAP_DEBUG_TRACE, "<==backsql_bind() root bind\n", 
				0, 0, 0 );
		return 0;
	}

	ber_dupbv( &op->oq_bind.rb_edn, &op->o_req_ndn );

	if ( op->oq_bind.rb_method != LDAP_AUTH_SIMPLE ) {
		rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED;
		rs->sr_text = "authentication method not supported"; 
		send_ldap_result( op, rs );
		return 1;
	}

	/*
	 * method = LDAP_AUTH_SIMPLE
	 */
	rs->sr_err = backsql_get_db_conn( op, &dbh );
	if (!dbh) {
     		Debug( LDAP_DEBUG_TRACE, "backsql_bind(): "
			"could not get connection handle - exiting\n",
			0, 0, 0 );

		rs->sr_text = ( rs->sr_err == LDAP_OTHER )
			? "SQL-backend error" : NULL;
		send_ldap_result( op, rs );
		return 1;
	}

	rc = backsql_dn2id( bi, &user_id, dbh, &op->o_req_ndn );
	if ( rc != LDAP_SUCCESS ) {
		Debug( LDAP_DEBUG_TRACE, "backsql_bind(): "
			"could not retrieve bind dn id - no such entry\n", 
			0, 0, 0 );
		rs->sr_err = LDAP_INVALID_CREDENTIALS;
		send_ldap_result( op, rs );
		return 1;
	}

	anlist[0].an_name = password->ad_cname;
	anlist[0].an_desc = password;
	anlist[1].an_name.bv_val = NULL;
	backsql_init_search( &bsi, &op->o_req_ndn, LDAP_SCOPE_BASE, 
			-1, -1, -1, NULL, dbh, op, anlist );
	e = backsql_id2entry( &bsi, &user_entry, &user_id );
	if ( e == NULL ) {
		Debug( LDAP_DEBUG_TRACE, "backsql_bind(): "
			"error in backsql_id2entry() - auth failed\n",
			0, 0, 0 );
		rs->sr_err = LDAP_OTHER;
		send_ldap_result( op, rs );
		return 1;
	}

	if ( ! access_allowed( op, e, password, NULL, ACL_AUTH, NULL ) ) {
		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
     		send_ldap_result( op, rs );
		return 1;
	}

	if ( ( a = attr_find( e->e_attrs, password ) ) == NULL ) {
		rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
		send_ldap_result( op, rs );
		return 1;
	}

	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 );
		return 1;
	}

	Debug(LDAP_DEBUG_TRACE,"<==backsql_bind()\n",0,0,0);
	return 0;
}
 
#endif /* SLAPD_SQL */