npfctl.h revision 1.11.2.13
1 /* $NetBSD: npfctl.h,v 1.11.2.13 2013/02/18 18:26:14 riz Exp $ */ 2 3 /*- 4 * Copyright (c) 2009-2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This material is based upon work partially supported by The 8 * NetBSD Foundation under a contract with Mindaugas Rasiukevicius. 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 _NPFCTL_H_ 33 #define _NPFCTL_H_ 34 35 #include <stdio.h> 36 #include <stdbool.h> 37 #include <inttypes.h> 38 #include <assert.h> 39 #include <util.h> 40 #undef ECHO /* XXX util.h */ 41 42 #include <net/npf_ncode.h> 43 #include <net/npf.h> 44 45 #define _NPF_PRIVATE 46 #include <npf.h> 47 48 #include "npf_var.h" 49 50 #define NPF_DEV_PATH "/dev/npf" 51 #define NPF_CONF_PATH "/etc/npf.conf" 52 #define NPF_SESSDB_PATH "/var/db/npf_sessions.db" 53 54 typedef struct fam_addr_mask { 55 sa_family_t fam_family; 56 npf_addr_t fam_addr; 57 npf_netmask_t fam_mask; 58 unsigned long fam_ifindex; 59 } fam_addr_mask_t; 60 61 typedef struct ifnet_addr { 62 unsigned long ifna_index; 63 sa_family_t ifna_family; 64 npfvar_t * ifna_filter; 65 npfvar_t * ifna_addrs; 66 } ifnet_addr_t; 67 68 typedef struct port_range { 69 in_port_t pr_start; 70 in_port_t pr_end; 71 } port_range_t; 72 73 typedef struct addr_port { 74 npfvar_t * ap_netaddr; 75 npfvar_t * ap_portrange; 76 } addr_port_t; 77 78 typedef struct filt_opts { 79 addr_port_t fo_from; 80 addr_port_t fo_to; 81 } filt_opts_t; 82 83 typedef struct opt_proto { 84 int op_proto; 85 npfvar_t * op_opts; 86 } opt_proto_t; 87 88 typedef struct rule_group { 89 const char * rg_name; 90 uint32_t rg_attr; 91 u_int rg_ifnum; 92 bool rg_default; 93 } rule_group_t; 94 95 typedef struct proc_call { 96 const char * pc_name; 97 npfvar_t * pc_opts; 98 } proc_call_t; 99 100 typedef struct proc_param { 101 const char * pp_param; 102 const char * pp_value; 103 } proc_param_t; 104 105 enum { NPFCTL_PARSE_FILE, NPFCTL_PARSE_STRING }; 106 107 void yyerror(const char *, ...) __printflike(1, 2) __dead; 108 void npfctl_parse_file(const char *); 109 void npfctl_parse_string(const char *); 110 111 void npfctl_print_error(const nl_error_t *); 112 char * npfctl_print_addrmask(int, npf_addr_t *, npf_netmask_t); 113 bool npfctl_table_exists_p(const char *); 114 int npfctl_protono(const char *); 115 in_port_t npfctl_portno(const char *); 116 uint8_t npfctl_icmpcode(int, uint8_t, const char *); 117 uint8_t npfctl_icmptype(int, const char *); 118 unsigned long npfctl_find_ifindex(const char *); 119 npfvar_t * npfctl_parse_ifnet(const char *, const int); 120 npfvar_t * npfctl_parse_tcpflag(const char *); 121 npfvar_t * npfctl_parse_table_id(const char *); 122 npfvar_t * npfctl_parse_icmp(int, int, int); 123 npfvar_t * npfctl_parse_port_range(in_port_t, in_port_t); 124 npfvar_t * npfctl_parse_port_range_variable(const char *); 125 npfvar_t * npfctl_parse_fam_addr_mask(const char *, const char *, 126 unsigned long *); 127 bool npfctl_parse_cidr(char *, fam_addr_mask_t *, int *); 128 129 /* 130 * NPF extension loading. 131 */ 132 133 typedef struct npf_extmod npf_extmod_t; 134 135 npf_extmod_t * npf_extmod_get(const char *, nl_ext_t **); 136 int npf_extmod_param(npf_extmod_t *, nl_ext_t *, 137 const char *, const char *); 138 139 /* 140 * N-code generation interface. 141 */ 142 143 typedef struct nc_ctx nc_ctx_t; 144 145 #define NC_MATCH_DST 0x01 146 #define NC_MATCH_SRC 0x02 147 148 #define NC_MATCH_TCP 0x04 149 #define NC_MATCH_UDP 0x08 150 #define NC_MATCH_ICMP 0x10 151 #define NC_MATCH_ICMP6 0x20 152 153 nc_ctx_t * npfctl_ncgen_create(void); 154 void * npfctl_ncgen_complete(nc_ctx_t *, size_t *); 155 void npfctl_ncgen_print(const void *, size_t); 156 157 void npfctl_ncgen_group(nc_ctx_t *); 158 void npfctl_ncgen_endgroup(nc_ctx_t *); 159 160 void npfctl_gennc_v4cidr(nc_ctx_t *, int, const npf_addr_t *, 161 const npf_netmask_t); 162 void npfctl_gennc_v6cidr(nc_ctx_t *, int, const npf_addr_t *, 163 const npf_netmask_t); 164 void npfctl_gennc_ports(nc_ctx_t *, int, in_port_t, in_port_t); 165 void npfctl_gennc_icmp(nc_ctx_t *, int, int); 166 void npfctl_gennc_icmp6(nc_ctx_t *, int, int); 167 void npfctl_gennc_tbl(nc_ctx_t *, int, u_int); 168 void npfctl_gennc_tcpfl(nc_ctx_t *, uint8_t, uint8_t); 169 void npfctl_gennc_proto(nc_ctx_t *ctx, uint8_t, uint8_t); 170 171 /* 172 * N-code disassembler. 173 */ 174 175 typedef struct nc_inf nc_inf_t; 176 177 nc_inf_t * npfctl_ncode_disinf(FILE *); 178 int npfctl_ncode_disassemble(nc_inf_t *, const void *, size_t); 179 180 /* 181 * Configuration building interface. 182 */ 183 184 #define NPFCTL_NAT_DYNAMIC 1 185 #define NPFCTL_NAT_STATIC 2 186 187 void npfctl_config_init(bool); 188 int npfctl_config_send(int, const char *); 189 nl_config_t * npfctl_config_ref(void); 190 int npfctl_config_show(int); 191 int npfctl_ruleset_show(int, const char *); 192 193 nl_rule_t * npfctl_rule_ref(void); 194 unsigned long npfctl_debug_addif(const char *); 195 196 void npfctl_build_rproc(const char *, npfvar_t *); 197 void npfctl_build_group(const char *, int, u_int, bool); 198 void npfctl_build_group_end(void); 199 void npfctl_build_rule(uint32_t, u_int, sa_family_t, 200 const opt_proto_t *, const filt_opts_t *, const char *); 201 void npfctl_build_natseg(int, int, u_int, const addr_port_t *, 202 const addr_port_t *, const filt_opts_t *); 203 void npfctl_build_table(const char *, u_int, const char *); 204 205 #endif 206
Indexes created Tue Oct 21 19:09:51 GMT 2025