1 /* $OpenBSD: pfctl_parser.h,v 1.86 2006/10/31 23:46:25 mcbride Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * - Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef _PFCTL_PARSER_H_ 37 #define _PFCTL_PARSER_H_ 38 39 #include <libpfctl.h> 40 41 #define PF_OSFP_FILE "/etc/pf.os" 42 43 #define PF_OPT_DISABLE 0x0001 44 #define PF_OPT_ENABLE 0x0002 45 #define PF_OPT_VERBOSE 0x0004 46 #define PF_OPT_NOACTION 0x0008 47 #define PF_OPT_QUIET 0x0010 48 #define PF_OPT_CLRRULECTRS 0x0020 49 #define PF_OPT_USEDNS 0x0040 50 #define PF_OPT_VERBOSE2 0x0080 51 #define PF_OPT_DUMMYACTION 0x0100 52 #define PF_OPT_DEBUG 0x0200 53 #define PF_OPT_SHOWALL 0x0400 54 #define PF_OPT_OPTIMIZE 0x0800 55 #define PF_OPT_NUMERIC 0x1000 56 #define PF_OPT_MERGE 0x2000 57 #define PF_OPT_RECURSE 0x4000 58 #define PF_OPT_KILLMATCH 0x8000 59 60 #define PF_TH_ALL 0xFF 61 62 #define PF_NAT_PROXY_PORT_LOW 50001 63 #define PF_NAT_PROXY_PORT_HIGH 65535 64 65 #define PF_OPTIMIZE_BASIC 0x0001 66 #define PF_OPTIMIZE_PROFILE 0x0002 67 68 #define FCNT_NAMES { \ 69 "searches", \ 70 "inserts", \ 71 "removals", \ 72 NULL \ 73 } 74 75 struct pfr_buffer; /* forward definition */ 76 77 78 struct pfctl { 79 int dev; 80 int opts; 81 int optimize; 82 int loadopt; 83 int asd; /* anchor stack depth */ 84 int bn; /* brace number */ 85 int tdirty; /* kernel dirty */ 86 #define PFCTL_ANCHOR_STACK_DEPTH 64 87 struct pfctl_anchor *astack[PFCTL_ANCHOR_STACK_DEPTH]; 88 struct pfioc_pooladdr paddr; 89 struct pfioc_altq *paltq; 90 struct pfioc_queue *pqueue; 91 struct pfr_buffer *trans; 92 struct pfctl_anchor *anchor, *alast; 93 int eth_nr; 94 struct pfctl_eth_anchor *eanchor, *ealast; 95 struct pfctl_eth_anchor *eastack[PFCTL_ANCHOR_STACK_DEPTH]; 96 u_int32_t eth_ticket; 97 const char *ruleset; 98 99 /* 'set foo' options */ 100 u_int32_t timeout[PFTM_MAX]; 101 u_int32_t limit[PF_LIMIT_MAX]; 102 u_int32_t debug; 103 u_int32_t hostid; 104 char *ifname; 105 bool keep_counters; 106 u_int8_t syncookies; 107 u_int8_t syncookieswat[2]; /* lowat, highwat, in % */ 108 u_int8_t syncookieswat_set; 109 110 u_int8_t timeout_set[PFTM_MAX]; 111 u_int8_t limit_set[PF_LIMIT_MAX]; 112 u_int8_t debug_set; 113 u_int8_t hostid_set; 114 u_int8_t ifname_set; 115 }; 116 117 struct node_if { 118 char ifname[IFNAMSIZ]; 119 u_int8_t not; 120 u_int8_t dynamic; /* antispoof */ 121 u_int ifa_flags; 122 struct node_if *next; 123 struct node_if *tail; 124 }; 125 126 struct node_host { 127 struct pf_addr_wrap addr; 128 struct pf_addr bcast; 129 struct pf_addr peer; 130 sa_family_t af; 131 u_int8_t not; 132 u_int32_t ifindex; /* link-local IPv6 addrs */ 133 char *ifname; 134 u_int ifa_flags; 135 struct node_host *next; 136 struct node_host *tail; 137 }; 138 139 struct node_mac { 140 u_int8_t mac[ETHER_ADDR_LEN]; 141 u_int8_t mask[ETHER_ADDR_LEN]; 142 bool neg; 143 struct node_mac *next; 144 struct node_mac *tail; 145 }; 146 147 struct node_os { 148 char *os; 149 pf_osfp_t fingerprint; 150 struct node_os *next; 151 struct node_os *tail; 152 }; 153 154 struct node_queue_bw { 155 u_int64_t bw_absolute; 156 u_int16_t bw_percent; 157 }; 158 159 struct node_hfsc_sc { 160 struct node_queue_bw m1; /* slope of 1st segment; bps */ 161 u_int d; /* x-projection of m1; msec */ 162 struct node_queue_bw m2; /* slope of 2nd segment; bps */ 163 u_int8_t used; 164 }; 165 166 struct node_hfsc_opts { 167 struct node_hfsc_sc realtime; 168 struct node_hfsc_sc linkshare; 169 struct node_hfsc_sc upperlimit; 170 int flags; 171 }; 172 173 struct node_fairq_sc { 174 struct node_queue_bw m1; /* slope of 1st segment; bps */ 175 u_int d; /* x-projection of m1; msec */ 176 struct node_queue_bw m2; /* slope of 2nd segment; bps */ 177 u_int8_t used; 178 }; 179 180 struct node_fairq_opts { 181 struct node_fairq_sc linkshare; 182 struct node_queue_bw hogs_bw; 183 u_int nbuckets; 184 int flags; 185 }; 186 187 struct node_queue_opt { 188 int qtype; 189 union { 190 struct cbq_opts cbq_opts; 191 struct codel_opts codel_opts; 192 struct priq_opts priq_opts; 193 struct node_hfsc_opts hfsc_opts; 194 struct node_fairq_opts fairq_opts; 195 } data; 196 }; 197 198 #define QPRI_BITSET_SIZE 256 199 __BITSET_DEFINE(qpri_bitset, QPRI_BITSET_SIZE); 200 LIST_HEAD(gen_sc, segment); 201 202 struct pfctl_altq { 203 struct pf_altq pa; 204 struct { 205 STAILQ_ENTRY(pfctl_altq) link; 206 u_int64_t bwsum; 207 struct qpri_bitset qpris; 208 int children; 209 int root_classes; 210 int default_classes; 211 struct gen_sc lssc; 212 struct gen_sc rtsc; 213 } meta; 214 }; 215 216 struct pfctl_watermarks { 217 uint32_t hi; 218 uint32_t lo; 219 }; 220 221 #ifdef __FreeBSD__ 222 /* 223 * XXX 224 * Absolutely this is not correct location to define this. 225 * Should we use an another sperate header file? 226 */ 227 #define SIMPLEQ_HEAD STAILQ_HEAD 228 #define SIMPLEQ_HEAD_INITIALIZER STAILQ_HEAD_INITIALIZER 229 #define SIMPLEQ_ENTRY STAILQ_ENTRY 230 #define SIMPLEQ_FIRST STAILQ_FIRST 231 #define SIMPLEQ_END(head) NULL 232 #define SIMPLEQ_EMPTY STAILQ_EMPTY 233 #define SIMPLEQ_NEXT STAILQ_NEXT 234 /*#define SIMPLEQ_FOREACH STAILQ_FOREACH*/ 235 #define SIMPLEQ_FOREACH(var, head, field) \ 236 for((var) = SIMPLEQ_FIRST(head); \ 237 (var) != SIMPLEQ_END(head); \ 238 (var) = SIMPLEQ_NEXT(var, field)) 239 #define SIMPLEQ_INIT STAILQ_INIT 240 #define SIMPLEQ_INSERT_HEAD STAILQ_INSERT_HEAD 241 #define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL 242 #define SIMPLEQ_INSERT_AFTER STAILQ_INSERT_AFTER 243 #define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD 244 #endif 245 SIMPLEQ_HEAD(node_tinithead, node_tinit); 246 struct node_tinit { /* table initializer */ 247 SIMPLEQ_ENTRY(node_tinit) entries; 248 struct node_host *host; 249 char *file; 250 }; 251 252 253 /* optimizer created tables */ 254 struct pf_opt_tbl { 255 char pt_name[PF_TABLE_NAME_SIZE]; 256 int pt_rulecount; 257 int pt_generated; 258 struct node_tinithead pt_nodes; 259 struct pfr_buffer *pt_buf; 260 }; 261 #define PF_OPT_TABLE_PREFIX "__automatic_" 262 263 /* optimizer pf_rule container */ 264 struct pf_opt_rule { 265 struct pfctl_rule por_rule; 266 struct pf_opt_tbl *por_src_tbl; 267 struct pf_opt_tbl *por_dst_tbl; 268 u_int64_t por_profile_count; 269 TAILQ_ENTRY(pf_opt_rule) por_entry; 270 TAILQ_ENTRY(pf_opt_rule) por_skip_entry[PF_SKIP_COUNT]; 271 }; 272 273 TAILQ_HEAD(pf_opt_queue, pf_opt_rule); 274 275 int pfctl_rules(int, char *, int, int, char *, struct pfr_buffer *); 276 int pfctl_optimize_ruleset(struct pfctl *, struct pfctl_ruleset *); 277 278 int pfctl_append_rule(struct pfctl *, struct pfctl_rule *, const char *); 279 int pfctl_append_eth_rule(struct pfctl *, struct pfctl_eth_rule *, 280 const char *); 281 int pfctl_add_altq(struct pfctl *, struct pf_altq *); 282 int pfctl_add_pool(struct pfctl *, struct pfctl_pool *, sa_family_t); 283 void pfctl_move_pool(struct pfctl_pool *, struct pfctl_pool *); 284 void pfctl_clear_pool(struct pfctl_pool *); 285 286 int pfctl_set_timeout(struct pfctl *, const char *, int, int); 287 int pfctl_set_optimization(struct pfctl *, const char *); 288 int pfctl_set_limit(struct pfctl *, const char *, unsigned int); 289 int pfctl_set_logif(struct pfctl *, char *); 290 int pfctl_set_hostid(struct pfctl *, u_int32_t); 291 int pfctl_set_debug(struct pfctl *, char *); 292 int pfctl_set_interface_flags(struct pfctl *, char *, int, int); 293 int pfctl_cfg_syncookies(struct pfctl *, uint8_t, struct pfctl_watermarks *); 294 295 int parse_config(char *, struct pfctl *); 296 int parse_flags(char *); 297 int pfctl_load_anchors(int, struct pfctl *, struct pfr_buffer *); 298 299 void print_pool(struct pfctl_pool *, u_int16_t, u_int16_t, sa_family_t, int); 300 void print_src_node(struct pf_src_node *, int); 301 void print_eth_rule(struct pfctl_eth_rule *, const char *, int); 302 void print_rule(struct pfctl_rule *, const char *, int, int); 303 void print_tabledef(const char *, int, int, struct node_tinithead *); 304 void print_status(struct pfctl_status *, struct pfctl_syncookies *, int); 305 void print_running(struct pfctl_status *); 306 307 int eval_pfaltq(struct pfctl *, struct pf_altq *, struct node_queue_bw *, 308 struct node_queue_opt *); 309 int eval_pfqueue(struct pfctl *, struct pf_altq *, struct node_queue_bw *, 310 struct node_queue_opt *); 311 312 void print_altq(const struct pf_altq *, unsigned, struct node_queue_bw *, 313 struct node_queue_opt *); 314 void print_queue(const struct pf_altq *, unsigned, struct node_queue_bw *, 315 int, struct node_queue_opt *); 316 317 int pfctl_define_table(char *, int, int, const char *, struct pfr_buffer *, 318 u_int32_t); 319 320 void pfctl_clear_fingerprints(int, int); 321 int pfctl_file_fingerprints(int, int, const char *); 322 pf_osfp_t pfctl_get_fingerprint(const char *); 323 int pfctl_load_fingerprints(int, int); 324 char *pfctl_lookup_fingerprint(pf_osfp_t, char *, size_t); 325 void pfctl_show_fingerprints(int); 326 327 328 struct icmptypeent { 329 const char *name; 330 u_int8_t type; 331 }; 332 333 struct icmpcodeent { 334 const char *name; 335 u_int8_t type; 336 u_int8_t code; 337 }; 338 339 const struct icmptypeent *geticmptypebynumber(u_int8_t, u_int8_t); 340 const struct icmptypeent *geticmptypebyname(char *, u_int8_t); 341 const struct icmpcodeent *geticmpcodebynumber(u_int8_t, u_int8_t, u_int8_t); 342 const struct icmpcodeent *geticmpcodebyname(u_long, char *, u_int8_t); 343 344 struct pf_timeout { 345 const char *name; 346 int timeout; 347 }; 348 349 #define PFCTL_FLAG_FILTER 0x02 350 #define PFCTL_FLAG_NAT 0x04 351 #define PFCTL_FLAG_OPTION 0x08 352 #define PFCTL_FLAG_ALTQ 0x10 353 #define PFCTL_FLAG_TABLE 0x20 354 #define PFCTL_FLAG_ETH 0x40 355 356 extern const struct pf_timeout pf_timeouts[]; 357 358 void set_ipmask(struct node_host *, u_int8_t); 359 int check_netmask(struct node_host *, sa_family_t); 360 int unmask(struct pf_addr *, sa_family_t); 361 void ifa_load(void); 362 int get_query_socket(void); 363 struct node_host *ifa_exists(char *); 364 struct node_host *ifa_grouplookup(char *ifa_name, int flags); 365 struct node_host *ifa_lookup(char *, int); 366 struct node_host *host(const char *); 367 368 int append_addr(struct pfr_buffer *, char *, int); 369 int append_addr_host(struct pfr_buffer *, 370 struct node_host *, int, int); 371 372 #endif /* _PFCTL_PARSER_H_ */ 373