npfctl.h revision 1.11.2.11
1 /* $NetBSD: npfctl.h,v 1.11.2.11 2012/12/16 19:41:37 riz Exp $ */ 2 3 /*- 4 * Copyright (c) 2009-2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _NPFCTL_H_ 30 #define _NPFCTL_H_ 31 32 #include <stdio.h> 33 #include <stdbool.h> 34 #include <inttypes.h> 35 #include <assert.h> 36 #include <util.h> 37 #undef ECHO /* XXX util.h */ 38 39 #include <net/npf_ncode.h> 40 #include <net/npf.h> 41 42 #define _NPF_PRIVATE 43 #include <npf.h> 44 45 #include "npf_var.h" 46 47 #define NPF_DEV_PATH "/dev/npf" 48 #define NPF_CONF_PATH "/etc/npf.conf" 49 #define NPF_SESSDB_PATH "/var/db/npf_sessions.db" 50 51 typedef struct fam_addr_mask { 52 sa_family_t fam_family; 53 npf_addr_t fam_addr; 54 npf_netmask_t fam_mask; 55 unsigned long fam_ifindex; 56 } fam_addr_mask_t; 57 58 typedef struct ifnet_addr { 59 unsigned long ifna_index; 60 sa_family_t ifna_family; 61 npfvar_t * ifna_filter; 62 npfvar_t * ifna_addrs; 63 } ifnet_addr_t; 64 65 typedef struct port_range { 66 in_port_t pr_start; 67 in_port_t pr_end; 68 } port_range_t; 69 70 typedef struct addr_port { 71 npfvar_t * ap_netaddr; 72 npfvar_t * ap_portrange; 73 } addr_port_t; 74 75 typedef struct filt_opts { 76 addr_port_t fo_from; 77 addr_port_t fo_to; 78 } filt_opts_t; 79 80 typedef struct opt_proto { 81 int op_proto; 82 npfvar_t * op_opts; 83 } opt_proto_t; 84 85 typedef struct rule_group { 86 const char * rg_name; 87 uint32_t rg_attr; 88 u_int rg_ifnum; 89 } rule_group_t; 90 91 typedef struct proc_call { 92 const char * pc_name; 93 npfvar_t * pc_opts; 94 } proc_call_t; 95 96 typedef struct proc_param { 97 const char * pp_param; 98 const char * pp_value; 99 } proc_param_t; 100 101 void yyerror(const char *, ...) __printflike(1, 2) __dead; 102 103 void npfctl_print_error(const nl_error_t *); 104 char * npfctl_print_addrmask(int, npf_addr_t *, npf_netmask_t); 105 bool npfctl_table_exists_p(const char *); 106 int npfctl_protono(const char *); 107 in_port_t npfctl_portno(const char *); 108 uint8_t npfctl_icmpcode(int, uint8_t, const char *); 109 uint8_t npfctl_icmptype(int, const char *); 110 unsigned long npfctl_find_ifindex(const char *); 111 npfvar_t * npfctl_parse_ifnet(const char *, const int); 112 npfvar_t * npfctl_parse_tcpflag(const char *); 113 npfvar_t * npfctl_parse_table_id(const char *); 114 npfvar_t * npfctl_parse_icmp(int, int, int); 115 npfvar_t * npfctl_parse_port_range(in_port_t, in_port_t); 116 npfvar_t * npfctl_parse_port_range_variable(const char *); 117 npfvar_t * npfctl_parse_fam_addr_mask(const char *, const char *, 118 unsigned long *); 119 bool npfctl_parse_cidr(char *, fam_addr_mask_t *, int *); 120 121 /* 122 * NPF extension loading. 123 */ 124 125 typedef struct npf_extmod npf_extmod_t; 126 127 npf_extmod_t * npf_extmod_get(const char *, nl_ext_t **); 128 int npf_extmod_param(npf_extmod_t *, nl_ext_t *, 129 const char *, const char *); 130 131 /* 132 * N-code generation interface. 133 */ 134 135 typedef struct nc_ctx nc_ctx_t; 136 137 #define NC_MATCH_DST 0x01 138 #define NC_MATCH_SRC 0x02 139 140 #define NC_MATCH_TCP 0x04 141 #define NC_MATCH_UDP 0x08 142 #define NC_MATCH_ICMP 0x10 143 #define NC_MATCH_ICMP6 0x20 144 145 nc_ctx_t * npfctl_ncgen_create(void); 146 void * npfctl_ncgen_complete(nc_ctx_t *, size_t *); 147 void npfctl_ncgen_print(const void *, size_t); 148 149 void npfctl_ncgen_group(nc_ctx_t *); 150 void npfctl_ncgen_endgroup(nc_ctx_t *); 151 152 void npfctl_gennc_v4cidr(nc_ctx_t *, int, const npf_addr_t *, 153 const npf_netmask_t); 154 void npfctl_gennc_v6cidr(nc_ctx_t *, int, const npf_addr_t *, 155 const npf_netmask_t); 156 void npfctl_gennc_ports(nc_ctx_t *, int, in_port_t, in_port_t); 157 void npfctl_gennc_icmp(nc_ctx_t *, int, int); 158 void npfctl_gennc_icmp6(nc_ctx_t *, int, int); 159 void npfctl_gennc_tbl(nc_ctx_t *, int, u_int); 160 void npfctl_gennc_tcpfl(nc_ctx_t *, uint8_t, uint8_t); 161 void npfctl_gennc_proto(nc_ctx_t *ctx, uint8_t, uint8_t); 162 163 /* 164 * N-code disassembler. 165 */ 166 167 typedef struct nc_inf nc_inf_t; 168 169 nc_inf_t * npfctl_ncode_disinf(FILE *); 170 int npfctl_ncode_disassemble(nc_inf_t *, const void *, size_t); 171 172 /* 173 * Configuration building interface. 174 */ 175 176 #define NPFCTL_NAT_DYNAMIC 1 177 #define NPFCTL_NAT_STATIC 2 178 179 void npfctl_config_init(bool); 180 int npfctl_config_send(int, const char *); 181 nl_config_t * npfctl_config_ref(void); 182 int npfctl_config_show(int); 183 unsigned long npfctl_debug_addif(const char *); 184 185 void npfctl_build_rproc(const char *, npfvar_t *); 186 void npfctl_build_group(const char *, int, u_int); 187 void npfctl_build_rule(int, u_int, sa_family_t, 188 const opt_proto_t *, const filt_opts_t *, const char *); 189 void npfctl_build_natseg(int, int, u_int, const addr_port_t *, 190 const addr_port_t *, const filt_opts_t *); 191 void npfctl_build_table(const char *, u_int, const char *); 192 193 #endif 194
Indexes created Tue Oct 21 19:09:51 GMT 2025