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 34 #ifndef _PFCTL_PARSER_H_ 35 #define _PFCTL_PARSER_H_ 36 37 #include <libpfctl.h> 38 39 #define PF_OSFP_FILE "/etc/pf.os" 40 41 #define PF_OPT_DISABLE 0x0001 42 #define PF_OPT_ENABLE 0x0002 43 #define PF_OPT_VERBOSE 0x0004 44 #define PF_OPT_NOACTION 0x0008 45 #define PF_OPT_QUIET 0x0010 46 #define PF_OPT_CLRRULECTRS 0x0020 47 #define PF_OPT_USEDNS 0x0040 48 #define PF_OPT_VERBOSE2 0x0080 49 #define PF_OPT_DUMMYACTION 0x0100 50 #define PF_OPT_DEBUG 0x0200 51 #define PF_OPT_SHOWALL 0x0400 52 #define PF_OPT_OPTIMIZE 0x0800 53 #define PF_OPT_NUMERIC 0x1000 54 #define PF_OPT_MERGE 0x2000 55 #define PF_OPT_RECURSE 0x4000 56 #define PF_OPT_KILLMATCH 0x8000 57 58 #define PF_TH_ALL 0xFF 59 60 #define PF_NAT_PROXY_PORT_LOW 50001 61 #define PF_NAT_PROXY_PORT_HIGH 65535 62 63 #define PF_OPTIMIZE_BASIC 0x0001 64 #define PF_OPTIMIZE_PROFILE 0x0002 65 66 #define FCNT_NAMES { \ 67 "searches", \ 68 "inserts", \ 69 "removals", \ 70 NULL \ 71 } 72 73 struct pfr_buffer; /* forward definition */ 74 75 76 struct pfctl { 77 int dev; 78 struct pfctl_handle *h; 79 int opts; 80 int optimize; 81 int loadopt; 82 int asd; /* anchor stack depth */ 83 int bn; /* brace number */ 84 int tdirty; /* kernel dirty */ 85 #define PFCTL_ANCHOR_STACK_DEPTH 64 86 struct pfctl_anchor *astack[PFCTL_ANCHOR_STACK_DEPTH]; 87 struct pfioc_pooladdr paddr; 88 struct pfioc_altq *paltq; 89 struct pfioc_queue *pqueue; 90 struct pfr_buffer *trans; 91 struct pfctl_anchor *anchor, *alast; 92 int eth_nr; 93 struct pfctl_eth_anchor *eanchor, *ealast; 94 struct pfctl_eth_anchor *eastack[PFCTL_ANCHOR_STACK_DEPTH]; 95 u_int32_t eth_ticket; 96 const char *ruleset; 97 98 /* 'set foo' options */ 99 u_int32_t timeout[PFTM_MAX]; 100 u_int32_t limit[PF_LIMIT_MAX]; 101 u_int32_t debug; 102 u_int32_t hostid; 103 u_int32_t reassemble; 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 u_int8_t reass_set; 116 }; 117 118 struct node_if { 119 char ifname[IFNAMSIZ]; 120 u_int8_t not; 121 u_int8_t dynamic; /* antispoof */ 122 u_int ifa_flags; 123 struct node_if *next; 124 struct node_if *tail; 125 }; 126 127 struct node_host { 128 struct pf_addr_wrap addr; 129 struct pf_addr bcast; 130 struct pf_addr peer; 131 sa_family_t af; 132 u_int8_t not; 133 u_int32_t ifindex; /* link-local IPv6 addrs */ 134 char *ifname; 135 u_int ifa_flags; 136 struct node_host *next; 137 struct node_host *tail; 138 }; 139 140 void freehostlist(struct node_host *); 141 142 struct node_mac { 143 u_int8_t mac[ETHER_ADDR_LEN]; 144 u_int8_t mask[ETHER_ADDR_LEN]; 145 bool neg; 146 bool isset; 147 struct node_mac *next; 148 struct node_mac *tail; 149 }; 150 151 struct node_os { 152 char *os; 153 pf_osfp_t fingerprint; 154 struct node_os *next; 155 struct node_os *tail; 156 }; 157 158 struct node_queue_bw { 159 u_int64_t bw_absolute; 160 u_int16_t bw_percent; 161 }; 162 163 struct node_hfsc_sc { 164 struct node_queue_bw m1; /* slope of 1st segment; bps */ 165 u_int d; /* x-projection of m1; msec */ 166 struct node_queue_bw m2; /* slope of 2nd segment; bps */ 167 u_int8_t used; 168 }; 169 170 struct node_hfsc_opts { 171 struct node_hfsc_sc realtime; 172 struct node_hfsc_sc linkshare; 173 struct node_hfsc_sc upperlimit; 174 int flags; 175 }; 176 177 struct node_fairq_sc { 178 struct node_queue_bw m1; /* slope of 1st segment; bps */ 179 u_int d; /* x-projection of m1; msec */ 180 struct node_queue_bw m2; /* slope of 2nd segment; bps */ 181 u_int8_t used; 182 }; 183 184 struct node_fairq_opts { 185 struct node_fairq_sc linkshare; 186 struct node_queue_bw hogs_bw; 187 u_int nbuckets; 188 int flags; 189 }; 190 191 struct node_queue_opt { 192 int qtype; 193 union { 194 struct cbq_opts cbq_opts; 195 struct codel_opts codel_opts; 196 struct priq_opts priq_opts; 197 struct node_hfsc_opts hfsc_opts; 198 struct node_fairq_opts fairq_opts; 199 } data; 200 }; 201 202 #define QPRI_BITSET_SIZE 256 203 __BITSET_DEFINE(qpri_bitset, QPRI_BITSET_SIZE); 204 LIST_HEAD(gen_sc, segment); 205 206 struct pfctl_altq { 207 struct pf_altq pa; 208 struct { 209 STAILQ_ENTRY(pfctl_altq) link; 210 u_int64_t bwsum; 211 struct qpri_bitset qpris; 212 int children; 213 int root_classes; 214 int default_classes; 215 struct gen_sc lssc; 216 struct gen_sc rtsc; 217 } meta; 218 }; 219 220 struct pfctl_watermarks { 221 uint32_t hi; 222 uint32_t lo; 223 }; 224 225 #ifdef __FreeBSD__ 226 /* 227 * XXX 228 * Absolutely this is not correct location to define this. 229 * Should we use an another sperate header file? 230 */ 231 #define SIMPLEQ_HEAD STAILQ_HEAD 232 #define SIMPLEQ_HEAD_INITIALIZER STAILQ_HEAD_INITIALIZER 233 #define SIMPLEQ_ENTRY STAILQ_ENTRY 234 #define SIMPLEQ_FIRST STAILQ_FIRST 235 #define SIMPLEQ_END(head) NULL 236 #define SIMPLEQ_EMPTY STAILQ_EMPTY 237 #define SIMPLEQ_NEXT STAILQ_NEXT 238 /*#define SIMPLEQ_FOREACH STAILQ_FOREACH*/ 239 #define SIMPLEQ_FOREACH(var, head, field) \ 240 for((var) = SIMPLEQ_FIRST(head); \ 241 (var) != SIMPLEQ_END(head); \ 242 (var) = SIMPLEQ_NEXT(var, field)) 243 #define SIMPLEQ_INIT STAILQ_INIT 244 #define SIMPLEQ_INSERT_HEAD STAILQ_INSERT_HEAD 245 #define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL 246 #define SIMPLEQ_INSERT_AFTER STAILQ_INSERT_AFTER 247 #define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD 248 #endif 249 SIMPLEQ_HEAD(node_tinithead, node_tinit); 250 struct node_tinit { /* table initializer */ 251 SIMPLEQ_ENTRY(node_tinit) entries; 252 struct node_host *host; 253 char *file; 254 }; 255 256 257 /* optimizer created tables */ 258 struct pf_opt_tbl { 259 char pt_name[PF_TABLE_NAME_SIZE]; 260 int pt_rulecount; 261 int pt_generated; 262 struct node_tinithead pt_nodes; 263 struct pfr_buffer *pt_buf; 264 }; 265 #define PF_OPT_TABLE_PREFIX "__automatic_" 266 267 /* optimizer pf_rule container */ 268 struct pf_opt_rule { 269 struct pfctl_rule por_rule; 270 struct pf_opt_tbl *por_src_tbl; 271 struct pf_opt_tbl *por_dst_tbl; 272 u_int64_t por_profile_count; 273 TAILQ_ENTRY(pf_opt_rule) por_entry; 274 TAILQ_ENTRY(pf_opt_rule) por_skip_entry[PF_SKIP_COUNT]; 275 }; 276 277 TAILQ_HEAD(pf_opt_queue, pf_opt_rule); 278 279 int pfctl_rules(int, char *, int, int, char *, struct pfr_buffer *); 280 int pfctl_optimize_ruleset(struct pfctl *, struct pfctl_ruleset *); 281 282 int pfctl_append_rule(struct pfctl *, struct pfctl_rule *, const char *); 283 int pfctl_append_eth_rule(struct pfctl *, struct pfctl_eth_rule *, 284 const char *); 285 int pfctl_add_altq(struct pfctl *, struct pf_altq *); 286 int pfctl_add_pool(struct pfctl *, struct pfctl_pool *, sa_family_t); 287 void pfctl_move_pool(struct pfctl_pool *, struct pfctl_pool *); 288 void pfctl_clear_pool(struct pfctl_pool *); 289 290 int pfctl_apply_timeout(struct pfctl *, const char *, int, int); 291 int pfctl_set_reassembly(struct pfctl *, int, int); 292 int pfctl_set_optimization(struct pfctl *, const char *); 293 int pfctl_apply_limit(struct pfctl *, const char *, unsigned int); 294 int pfctl_set_logif(struct pfctl *, char *); 295 int pfctl_set_hostid(struct pfctl *, u_int32_t); 296 int pfctl_do_set_debug(struct pfctl *, char *); 297 int pfctl_set_interface_flags(struct pfctl *, char *, int, int); 298 int pfctl_cfg_syncookies(struct pfctl *, uint8_t, struct pfctl_watermarks *); 299 300 int parse_config(char *, struct pfctl *); 301 int parse_flags(char *); 302 int pfctl_load_anchors(int, struct pfctl *, struct pfr_buffer *); 303 304 void print_pool(struct pfctl_pool *, u_int16_t, u_int16_t, sa_family_t, int); 305 void print_src_node(struct pf_src_node *, int); 306 void print_eth_rule(struct pfctl_eth_rule *, const char *, int); 307 void print_rule(struct pfctl_rule *, const char *, int, int); 308 void print_tabledef(const char *, int, int, struct node_tinithead *); 309 void print_status(struct pfctl_status *, struct pfctl_syncookies *, int); 310 void print_running(struct pfctl_status *); 311 312 int eval_pfaltq(struct pfctl *, struct pf_altq *, struct node_queue_bw *, 313 struct node_queue_opt *); 314 int eval_pfqueue(struct pfctl *, struct pf_altq *, struct node_queue_bw *, 315 struct node_queue_opt *); 316 317 void print_altq(const struct pf_altq *, unsigned, struct node_queue_bw *, 318 struct node_queue_opt *); 319 void print_queue(const struct pf_altq *, unsigned, struct node_queue_bw *, 320 int, struct node_queue_opt *); 321 322 int pfctl_define_table(char *, int, int, const char *, struct pfr_buffer *, 323 u_int32_t); 324 325 void pfctl_clear_fingerprints(int, int); 326 int pfctl_file_fingerprints(int, int, const char *); 327 pf_osfp_t pfctl_get_fingerprint(const char *); 328 int pfctl_load_fingerprints(int, int); 329 char *pfctl_lookup_fingerprint(pf_osfp_t, char *, size_t); 330 void pfctl_show_fingerprints(int); 331 332 333 struct icmptypeent { 334 const char *name; 335 u_int8_t type; 336 }; 337 338 struct icmpcodeent { 339 const char *name; 340 u_int8_t type; 341 u_int8_t code; 342 }; 343 344 const struct icmptypeent *geticmptypebynumber(u_int8_t, sa_family_t); 345 const struct icmptypeent *geticmptypebyname(char *, sa_family_t); 346 const struct icmpcodeent *geticmpcodebynumber(u_int8_t, u_int8_t, sa_family_t); 347 const struct icmpcodeent *geticmpcodebyname(u_long, char *, sa_family_t); 348 349 struct pf_timeout { 350 const char *name; 351 int timeout; 352 }; 353 354 #define PFCTL_FLAG_FILTER 0x02 355 #define PFCTL_FLAG_NAT 0x04 356 #define PFCTL_FLAG_OPTION 0x08 357 #define PFCTL_FLAG_ALTQ 0x10 358 #define PFCTL_FLAG_TABLE 0x20 359 #define PFCTL_FLAG_ETH 0x40 360 361 extern const struct pf_timeout pf_timeouts[]; 362 363 void set_ipmask(struct node_host *, u_int8_t); 364 int check_netmask(struct node_host *, sa_family_t); 365 int unmask(struct pf_addr *, sa_family_t); 366 struct node_host *gen_dynnode(struct node_host *, sa_family_t); 367 void ifa_load(void); 368 int get_query_socket(void); 369 struct node_host *ifa_exists(char *); 370 struct node_host *ifa_grouplookup(char *ifa_name, int flags); 371 struct node_host *ifa_lookup(char *, int); 372 struct node_host *host(const char *); 373 374 int append_addr(struct pfr_buffer *, char *, int); 375 int append_addr_host(struct pfr_buffer *, 376 struct node_host *, int, int); 377 378 #endif /* _PFCTL_PARSER_H_ */ 379