63012b51f1
- Add support for bi-directional NAT and redirection / port forwarding. - Finish filtering on ICMP type/code and add filtering on TCP flags. - Add support for TCP reset (RST) or ICMP destination unreachable on block. - Fix a bunch of bugs; misc cleanup.
112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/* $NetBSD: npfctl.h,v 1.2 2010/09/16 04:53:27 rmind Exp $ */
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/*-
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* Copyright (c) 2009-2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NPFCTL_H_
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#define _NPFCTL_H_
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdbool.h>
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#ifndef _NPF_TESTING
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#include <net/npf.h>
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#include <net/npf_ncode.h>
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#else
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#include "npf.h"
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#include "npf_ncode.h"
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#endif
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#ifdef DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x)
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#endif
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#define NPF_DEV_PATH "/dev/npf"
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#define NPF_CONF_PATH "/etc/npf.conf"
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typedef struct {
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char * e_data;
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void * e_next;
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} element_t;
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#define VAR_SINGLE 1
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#define VAR_ARRAY 2
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#define VAR_TABLE 3
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typedef struct {
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char * v_key;
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element_t * v_elements;
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int v_type;
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int v_count;
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void * v_next;
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} var_t;
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void * zalloc(size_t);
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char * xstrdup(const char *);
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void npfctl_init_data(void);
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int npfctl_ioctl_send(int);
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bool npfctl_parse_v4mask(char *, in_addr_t *, in_addr_t *);
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prop_dictionary_t npfctl_mk_rule(bool);
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void npfctl_add_rule(prop_dictionary_t, prop_dictionary_t);
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void npfctl_rule_setattr(prop_dictionary_t, int, char *);
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void npfctl_rule_protodata(prop_dictionary_t, char *, char *,
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int, int, var_t *, var_t *, var_t *, var_t *);
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void npfctl_rule_icmpdata(prop_dictionary_t, var_t *, var_t *);
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prop_dictionary_t npfctl_lookup_table(char *);
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prop_dictionary_t npfctl_mk_table(void);
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void npfctl_table_setup(prop_dictionary_t, char *, char *);
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void npfctl_construct_table(prop_dictionary_t, char *);
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void npfctl_add_table(prop_dictionary_t);
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prop_dictionary_t npfctl_mk_nat(void);
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void npfctl_add_nat(prop_dictionary_t);
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void npfctl_nat_setup(prop_dictionary_t, int, int,
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char *, char *, char *);
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size_t npfctl_calc_ncsize(int []);
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size_t npfctl_failure_offset(int []);
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void npfctl_gennc_ether(void **, int, uint16_t);
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void npfctl_gennc_v4cidr(void **, int,
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in_addr_t, in_addr_t, bool);
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void npfctl_gennc_icmp(void **, int, int, int);
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void npfctl_gennc_tcpfl(void **, int , uint8_t, uint8_t);
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void npfctl_gennc_ports(void **, int,
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in_port_t, in_port_t, bool, bool);
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void npfctl_gennc_tbl(void **, int, u_int , bool);
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void npfctl_gennc_complete(void **);
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int npf_parseline(char *);
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#endif
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