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