1 /*- 2 * Copyright (c) 2011-2025 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This material is based upon work partially supported by The 6 * NetBSD Foundation under a contract with Mindaugas Rasiukevicius. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _NPF_LIB_H_ 31 #define _NPF_LIB_H_ 32 33 #include <sys/types.h> 34 #include <net/npf.h> 35 36 __BEGIN_DECLS 37 38 struct nl_config; 39 struct nl_rule; 40 struct nl_rproc; 41 struct nl_table; 42 struct nl_ext; 43 44 typedef struct nl_config nl_config_t; 45 typedef struct nl_rule nl_rule_t; 46 typedef struct nl_rproc nl_rproc_t; 47 typedef struct nl_table nl_table_t; 48 typedef struct nl_rule nl_nat_t; 49 typedef struct nl_ext nl_ext_t; 50 51 /* 52 * Iterator. 53 */ 54 #define NPF_ITER_BEGIN 0 55 56 typedef signed long nl_iter_t; 57 58 /* 59 * Ruleset prefix(es). 60 */ 61 62 #define NPF_RULESET_MAP_PREF "map:" 63 64 /* 65 * Extensions API types. 66 */ 67 typedef int (*npfext_initfunc_t)(void); 68 typedef nl_ext_t *(*npfext_consfunc_t)(const char *); 69 typedef int (*npfext_paramfunc_t)(nl_ext_t *, const char *, const char *); 70 71 typedef int (*npf_conn_func_t)(unsigned, const npf_addr_t *, 72 const in_port_t *, const char *, void *); 73 74 /* 75 * API functions. 76 */ 77 78 nl_config_t * npf_config_create(void); 79 void npf_config_destroy(nl_config_t *); 80 int npf_config_submit(nl_config_t *, int, npf_error_t *); 81 nl_config_t * npf_config_retrieve(int); 82 int npf_config_flush(int); 83 nl_config_t * npf_config_import(const void *, size_t); 84 void * npf_config_export(nl_config_t *, size_t *); 85 bool npf_config_active_p(nl_config_t *); 86 bool npf_config_loaded_p(nl_config_t *); 87 const void * npf_config_build(nl_config_t *); 88 89 int npf_alg_load(nl_config_t *, const char *); 90 91 int npf_param_get(nl_config_t *, const char *, int *); 92 int npf_param_set(nl_config_t *, const char *, int); 93 const char * npf_param_iterate(nl_config_t *, nl_iter_t *, int *, int *); 94 95 int npf_ruleset_add(int, const char *, nl_rule_t *, uint64_t *); 96 int npf_ruleset_remove(int, const char *, uint64_t); 97 int npf_ruleset_remkey(int, const char *, const void *, size_t); 98 int npf_ruleset_flush(int, const char *); 99 100 nl_ext_t * npf_ext_construct(const char *); 101 void npf_ext_param_u32(nl_ext_t *, const char *, uint32_t); 102 void npf_ext_param_bool(nl_ext_t *, const char *, bool); 103 void npf_ext_param_string(nl_ext_t *, const char *, const char *); 104 105 nl_rule_t * npf_rule_create(const char *, uint32_t, const char *); 106 int npf_rule_setcode(nl_rule_t *, int, const void *, size_t); 107 int npf_rule_setprio(nl_rule_t *, int); 108 int npf_rule_setproc(nl_rule_t *, const char *); 109 int npf_rule_setrid(nl_rule_t *, struct r_id, const char *); 110 int npf_rule_setkey(nl_rule_t *, const void *, size_t); 111 int npf_rule_setinfo(nl_rule_t *, const void *, size_t); 112 const char * npf_rule_getname(nl_rule_t *); 113 uint32_t npf_rule_getattr(nl_rule_t *); 114 const char * npf_rule_getinterface(nl_rule_t *); 115 const void * npf_rule_getinfo(nl_rule_t *, size_t *); 116 const char * npf_rule_getproc(nl_rule_t *); 117 int npf_rule_getrid(struct r_id *, nl_rule_t *, const char *); 118 uint64_t npf_rule_getid(nl_rule_t *); 119 const void * npf_rule_getcode(nl_rule_t *, int *, size_t *); 120 bool npf_rule_exists_p(nl_config_t *, const char *); 121 int npf_rule_insert(nl_config_t *, nl_rule_t *, nl_rule_t *); 122 void * npf_rule_export(nl_rule_t *, size_t *); 123 void npf_rule_destroy(nl_rule_t *); 124 125 nl_rproc_t * npf_rproc_create(const char *); 126 int npf_rproc_extcall(nl_rproc_t *, nl_ext_t *); 127 bool npf_rproc_exists_p(nl_config_t *, const char *); 128 int npf_rproc_insert(nl_config_t *, nl_rproc_t *); 129 const char * npf_rproc_getname(nl_rproc_t *); 130 131 nl_nat_t * npf_nat_create(int, unsigned, const char *); 132 int npf_nat_setaddr(nl_nat_t *, int, npf_addr_t *, npf_netmask_t); 133 int npf_nat_setport(nl_nat_t *, in_port_t); 134 int npf_nat_settable(nl_nat_t *, unsigned); 135 int npf_nat_settablefilter(nl_nat_t *, int, npf_addr_t *, npf_netmask_t); 136 int npf_nat_setalgo(nl_nat_t *, unsigned); 137 int npf_nat_setnpt66(nl_nat_t *, uint16_t); 138 int npf_nat_gettype(nl_nat_t *); 139 unsigned npf_nat_getflags(nl_nat_t *); 140 const npf_addr_t *npf_nat_getaddr(nl_nat_t *, size_t *, npf_netmask_t *); 141 in_port_t npf_nat_getport(nl_nat_t *); 142 unsigned npf_nat_gettable(nl_nat_t *); 143 unsigned npf_nat_getalgo(nl_nat_t *); 144 int npf_nat_insert(nl_config_t *, nl_nat_t *); 145 int npf_nat_lookup(int, int, npf_addr_t *[2], in_port_t [2], int, int); 146 147 int npf_conn_list(int, npf_conn_func_t, void *); 148 149 nl_table_t * npf_table_create(const char *, unsigned, int); 150 const char * npf_table_getname(nl_table_t *); 151 unsigned npf_table_getid(nl_table_t *); 152 int npf_table_gettype(nl_table_t *); 153 int npf_table_add_entry(nl_table_t *, int, 154 const npf_addr_t *, const npf_netmask_t); 155 int npf_table_insert(nl_config_t *, nl_table_t *); 156 void npf_table_destroy(nl_table_t *); 157 158 int npf_table_replace(int, nl_table_t *, npf_error_t *); 159 160 #ifdef _NPF_PRIVATE 161 162 #include <ifaddrs.h> 163 164 nl_rule_t * npf_rule_iterate(nl_config_t *, nl_iter_t *, unsigned *); 165 nl_nat_t * npf_nat_iterate(nl_config_t *, nl_iter_t *); 166 nl_rproc_t * npf_rproc_iterate(nl_config_t *, nl_iter_t *); 167 nl_table_t * npf_table_iterate(nl_config_t *, nl_iter_t *); 168 169 int _npf_ruleset_list(int, const char *, nl_config_t *); 170 void _npf_debug_addif(nl_config_t *, const char *); 171 void _npf_config_dump(nl_config_t *, int); 172 173 #endif 174 175 __END_DECLS 176 177 #endif /* _NPF_LIB_H_ */ 178
Indexes created Sun Sep 21 20:09:37 GMT 2025