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npf_var.h revision 1.1.2.1 
      1 /*	$NetBSD: npf_var.h,v 1.1.2.1 2012/06/26 00:07:20 riz Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2011-2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _NPF_VAR_H_
     33 #define _NPF_VAR_H_
     34 
     35 #define	NPFVAR_STRING		0
     36 #define	NPFVAR_IDENTIFIER	1
     37 #define	NPFVAR_VAR_ID		2
     38 #define NPFVAR_NUM		3
     39 #define NPFVAR_PORT_RANGE	4
     40 
     41 /* Note: primitive types are equivalent. */
     42 #define NPFVAR_PRIM		NPFVAR_PORT_RANGE
     43 #define NPFVAR_TYPE(x)		(((x) > NPFVAR_PRIM) ? (x) : 0)
     44 
     45 #define	NPFVAR_TABLE		5
     46 #define	NPFVAR_FAM		6
     47 #define	NPFVAR_TCPFLAG		7
     48 #define	NPFVAR_ICMP		8
     49 #define	NPFVAR_PROC_OP		9
     50 #define	NPFVAR_MODULE_ARG	10
     51 
     52 #ifdef _NPFVAR_PRIVATE
     53 static const char *npfvar_types[ ] = {
     54 	"string", "identifier", "var_id", "num", "table", "fam", "port_range",
     55 	"tcpflag", "icmp", "proc_op", "module_arg"
     56 };
     57 #endif
     58 
     59 struct npfvar;
     60 typedef struct npfvar npfvar_t;
     61 
     62 npfvar_t *	npfvar_create(const char *);
     63 npfvar_t *	npfvar_lookup(const char *);
     64 const char *	npfvar_type(size_t);
     65 void		npfvar_add(npfvar_t *);
     66 npfvar_t *	npfvar_add_element(npfvar_t *, int, const void *, size_t);
     67 npfvar_t *	npfvar_add_elements(npfvar_t *, npfvar_t *);
     68 void		npfvar_destroy(npfvar_t *);
     69 
     70 char *		npfvar_expand_string(const npfvar_t *);
     71 size_t		npfvar_get_count(const npfvar_t *);
     72 int		npfvar_get_type(const npfvar_t *, size_t);
     73 void *		npfvar_get_data(const npfvar_t *, int, size_t);
     74 
     75 #endif
     76