npfctl.h revision 1.41
1 /* $NetBSD: npfctl.h,v 1.41 2016/12/27 20:14:35 christos 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 41 #define NPF_BPFCOP 42 #include <net/npf.h> 43 44 #define _NPF_PRIVATE 45 #include <npf.h> 46 47 #include "npf_var.h" 48 49 #define NPF_DEV_PATH "/dev/npf" 50 #define NPF_CONF_PATH "/etc/npf.conf" 51 #define NPF_DB_PATH "/var/db/npf.db" 52 53 typedef struct fam_addr_mask { 54 sa_family_t fam_family; 55 npf_addr_t fam_addr; 56 npf_netmask_t fam_mask; 57 unsigned long fam_ifindex; 58 } fam_addr_mask_t; 59 60 typedef struct ifnet_addr { 61 char * ifna_name; 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 const char * rg_ifname; 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 bool join(char *, size_t, int, char **, const char *); 108 void yyerror(const char *, ...) __printflike(1, 2) __dead; 109 void npfctl_bpfjit(bool); 110 void npfctl_parse_file(const char *); 111 void npfctl_parse_string(const char *); 112 113 void npfctl_print_error(const npf_error_t *); 114 char * npfctl_print_addrmask(int, const char *, const npf_addr_t *, 115 npf_netmask_t); 116 void npfctl_note_interface(const char *); 117 unsigned npfctl_table_getid(const char *); 118 int npfctl_protono(const char *); 119 in_port_t npfctl_portno(const char *); 120 uint8_t npfctl_icmpcode(int, uint8_t, const char *); 121 uint8_t npfctl_icmptype(int, const char *); 122 npfvar_t * npfctl_parse_ifnet(const char *, const int); 123 npfvar_t * npfctl_parse_tcpflag(const char *); 124 npfvar_t * npfctl_parse_table_id(const char *); 125 npfvar_t * npfctl_parse_icmp(int, int, int); 126 npfvar_t * npfctl_parse_port_range(in_port_t, in_port_t); 127 npfvar_t * npfctl_parse_port_range_variable(const char *); 128 npfvar_t * npfctl_parse_fam_addr_mask(const char *, const char *, 129 unsigned long *); 130 bool npfctl_parse_cidr(char *, fam_addr_mask_t *, int *); 131 uint16_t npfctl_npt66_calcadj(npf_netmask_t, const npf_addr_t *, 132 const npf_addr_t *); 133 134 /* 135 * NPF extension loading. 136 */ 137 138 typedef struct npf_extmod npf_extmod_t; 139 140 npf_extmod_t * npf_extmod_get(const char *, nl_ext_t **); 141 int npf_extmod_param(npf_extmod_t *, nl_ext_t *, 142 const char *, const char *); 143 144 /* 145 * BFF byte-code generation interface. 146 */ 147 148 typedef struct npf_bpf npf_bpf_t; 149 150 #define MATCH_DST 0x01 151 #define MATCH_SRC 0x02 152 153 enum { 154 BM_IPVER, BM_PROTO, BM_SRC_CIDR, BM_SRC_TABLE, BM_DST_CIDR, 155 BM_DST_TABLE, BM_SRC_PORTS, BM_DST_PORTS, BM_TCPFL, BM_ICMP_TYPE, 156 BM_ICMP_CODE, 157 }; 158 159 npf_bpf_t * npfctl_bpf_create(void); 160 struct bpf_program *npfctl_bpf_complete(npf_bpf_t *); 161 const void * npfctl_bpf_bmarks(npf_bpf_t *, size_t *); 162 void npfctl_bpf_destroy(npf_bpf_t *); 163 164 void npfctl_bpf_group(npf_bpf_t *); 165 void npfctl_bpf_endgroup(npf_bpf_t *); 166 167 void npfctl_bpf_proto(npf_bpf_t *, sa_family_t, int); 168 void npfctl_bpf_cidr(npf_bpf_t *, u_int, sa_family_t, 169 const npf_addr_t *, const npf_netmask_t); 170 void npfctl_bpf_ports(npf_bpf_t *, u_int, in_port_t, in_port_t); 171 void npfctl_bpf_tcpfl(npf_bpf_t *, uint8_t, uint8_t, bool); 172 void npfctl_bpf_icmp(npf_bpf_t *, int, int); 173 void npfctl_bpf_table(npf_bpf_t *, u_int, u_int); 174 175 /* 176 * Configuration building interface. 177 */ 178 179 #define NPFCTL_NAT_DYNAMIC 1 180 #define NPFCTL_NAT_STATIC 2 181 182 void npfctl_config_init(bool); 183 int npfctl_config_send(int, const char *); 184 nl_config_t * npfctl_config_ref(void); 185 int npfctl_config_show(int); 186 void npfctl_config_save(nl_config_t *, const char *); 187 188 void npfctl_show_init(void); 189 int npfctl_ruleset_show(int, const char *); 190 191 nl_rule_t * npfctl_rule_ref(void); 192 bool npfctl_debug_addif(const char *); 193 194 void npfctl_build_alg(const char *); 195 void npfctl_build_rproc(const char *, npfvar_t *); 196 void npfctl_build_group(const char *, int, const char *, bool); 197 void npfctl_build_group_end(void); 198 void npfctl_build_rule(uint32_t, const char *, sa_family_t, 199 const opt_proto_t *, const filt_opts_t *, 200 const char *, const char *); 201 void npfctl_build_natseg(int, int, const char *, 202 const addr_port_t *, const addr_port_t *, 203 const filt_opts_t *, unsigned); 204 void npfctl_build_maprset(const char *, int, const char *); 205 void npfctl_build_table(const char *, u_int, const char *); 206 207 /* 208 * For the systems which do not define TH_ECE and TW_CRW. 209 */ 210 #ifndef TH_ECE 211 #define TH_ECE 0x40 212 #endif 213 #ifndef TH_CWR 214 #define TH_CWR 0x80 215 #endif 216 217 #endif 218
Indexes created Fri Sep 26 08:10:20 GMT 2025