1 /* $NetBSD: ipf.h,v 1.3 2012/10/21 22:57:48 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2012 by Darren Reed. 5 * 6 * See the IPFILTER.LICENCE file for details on licencing. 7 * 8 * @(#)ipf.h 1.12 6/5/96 9 * Id: ipf.h,v 1.1.1.2 2012/07/22 13:44:25 darrenr Exp $ 10 */ 11 12 #ifndef __IPF_H__ 13 #define __IPF_H__ 14 15 #if defined(__osf__) 16 # define radix_mask ipf_radix_mask 17 # define radix_node ipf_radix_node 18 # define radix_node_head ipf_radix_node_head 19 #endif 20 21 #include <sys/param.h> 22 #include <sys/types.h> 23 #include <sys/file.h> 24 /* 25 * This is a workaround for <sys/uio.h> troubles on FreeBSD, HPUX, OpenBSD. 26 * Needed here because on some systems <sys/uio.h> gets included by things 27 * like <sys/socket.h> 28 */ 29 #ifndef _KERNEL 30 # define ADD_KERNEL 31 # define _KERNEL 32 # define KERNEL 33 #endif 34 #ifdef __OpenBSD__ 35 struct file; 36 #endif 37 #include <sys/uio.h> 38 #ifdef ADD_KERNEL 39 # undef _KERNEL 40 # undef KERNEL 41 #endif 42 #include <sys/time.h> 43 #include <sys/socket.h> 44 #include <net/if.h> 45 #if __FreeBSD_version >= 300000 46 # include <net/if_var.h> 47 #endif 48 #include <netinet/in.h> 49 #include <netinet/in_systm.h> 50 #include <netinet/ip.h> 51 #include <netinet/ip_icmp.h> 52 #ifndef TCP_PAWS_IDLE /* IRIX */ 53 # include <netinet/tcp.h> 54 #endif 55 #include <netinet/udp.h> 56 57 #include <arpa/inet.h> 58 59 #include <errno.h> 60 #include <limits.h> 61 #include <netdb.h> 62 #include <stdlib.h> 63 #include <stddef.h> 64 #include <stdio.h> 65 #if !defined(__SVR4) && !defined(__svr4__) && defined(sun) 66 # include <strings.h> 67 #endif 68 #include <string.h> 69 #include <unistd.h> 70 71 #include "netinet/ip_compat.h" 72 #include "netinet/ip_fil.h" 73 #include "netinet/ip_nat.h" 74 #include "netinet/ip_frag.h" 75 #include "netinet/ip_state.h" 76 #include "netinet/ip_proxy.h" 77 #include "netinet/ip_auth.h" 78 #include "netinet/ip_lookup.h" 79 #include "netinet/ip_pool.h" 80 #include "netinet/ip_scan.h" 81 #include "netinet/ip_htable.h" 82 #include "netinet/ip_sync.h" 83 #include "netinet/ip_dstlist.h" 84 85 #include "opts.h" 86 87 #ifndef __P 88 # ifdef __STDC__ 89 # define __P(x) x 90 # else 91 # define __P(x) () 92 # endif 93 #endif 94 #ifndef __STDC__ 95 # undef const 96 # define const 97 #endif 98 99 #ifndef U_32_T 100 # define U_32_T 1 101 # if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \ 102 defined(__sgi) 103 typedef u_int32_t u_32_t; 104 # else 105 # if defined(__alpha__) || defined(__alpha) || defined(_LP64) 106 typedef unsigned int u_32_t; 107 # else 108 # if SOLARIS2 >= 6 109 typedef uint32_t u_32_t; 110 # else 111 typedef unsigned int u_32_t; 112 # endif 113 # endif 114 # endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */ 115 #endif /* U_32_T */ 116 117 #ifndef MAXHOSTNAMELEN 118 # define MAXHOSTNAMELEN 256 119 #endif 120 121 #define MAX_ICMPCODE 16 122 #define MAX_ICMPTYPE 19 123 124 #define PRINTF (void)printf 125 #define FPRINTF (void)fprintf 126 127 128 struct ipopt_names { 129 int on_value; 130 int on_bit; 131 int on_siz; 132 char *on_name; 133 }; 134 135 136 typedef struct alist_s { 137 struct alist_s *al_next; 138 int al_not; 139 int al_family; 140 i6addr_t al_i6addr; 141 i6addr_t al_i6mask; 142 } alist_t; 143 144 #define al_addr al_i6addr.in4_addr 145 #define al_mask al_i6mask.in4_addr 146 #define al_1 al_addr 147 #define al_2 al_mask 148 149 150 typedef struct plist_s { 151 struct plist_s *pl_next; 152 int pl_compare; 153 u_short pl_port1; 154 u_short pl_port2; 155 } plist_t; 156 157 158 typedef struct { 159 u_short fb_c; 160 u_char fb_t; 161 u_char fb_f; 162 u_32_t fb_k; 163 } fakebpf_t; 164 165 166 typedef struct { 167 char *it_name; 168 int it_v4; 169 int it_v6; 170 } icmptype_t; 171 172 173 typedef struct wordtab { 174 char *w_word; 175 int w_value; 176 } wordtab_t; 177 178 179 typedef struct namelist { 180 struct namelist *na_next; 181 char *na_name; 182 int na_value; 183 } namelist_t; 184 185 186 typedef struct proxyrule { 187 struct proxyrule *pr_next; 188 char *pr_proxy; 189 char *pr_conf; 190 namelist_t *pr_names; 191 int pr_proto; 192 } proxyrule_t; 193 194 195 #if defined(__NetBSD__) || defined(__OpenBSD__) || \ 196 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000) || \ 197 SOLARIS || defined(__sgi) || defined(__osf__) || defined(linux) 198 # include <stdarg.h> 199 typedef int (* ioctlfunc_t) __P((int, ioctlcmd_t, ...)); 200 #else 201 typedef int (* ioctlfunc_t) __P((dev_t, ioctlcmd_t, void *)); 202 #endif 203 typedef int (* addfunc_t) __P((int, ioctlfunc_t, void *)); 204 typedef int (* copyfunc_t) __P((void *, void *, size_t)); 205 206 207 /* 208 * SunOS4 209 */ 210 #if defined(sun) && !defined(__SVR4) && !defined(__svr4__) 211 extern int ioctl __P((int, int, void *)); 212 #endif 213 214 extern char thishost[]; 215 extern char flagset[]; 216 extern u_char flags[]; 217 extern struct ipopt_names ionames[]; 218 extern struct ipopt_names secclass[]; 219 extern char *icmpcodes[MAX_ICMPCODE + 1]; 220 extern char *icmptypes[MAX_ICMPTYPE + 1]; 221 extern int use_inet6; 222 extern int lineNum; 223 extern int debuglevel; 224 extern struct ipopt_names v6ionames[]; 225 extern icmptype_t icmptypelist[]; 226 extern wordtab_t statefields[]; 227 extern wordtab_t natfields[]; 228 extern wordtab_t poolfields[]; 229 230 231 extern int addicmp __P((char ***, struct frentry *, int)); 232 extern int addipopt __P((char *, struct ipopt_names *, int, char *)); 233 extern int addkeep __P((char ***, struct frentry *, int)); 234 extern alist_t *alist_new __P((int, char *)); 235 extern void alist_free __P((alist_t *)); 236 extern void assigndefined __P((char *)); 237 extern void binprint __P((void *, size_t)); 238 extern u_32_t buildopts __P((char *, char *, int)); 239 extern int checkrev __P((char *)); 240 extern int connecttcp __P((char *, int)); 241 extern int count6bits __P((u_32_t *)); 242 extern int count4bits __P((u_32_t)); 243 extern char *fac_toname __P((int)); 244 extern int fac_findname __P((char *)); 245 extern const char *familyname __P((const int)); 246 extern void fill6bits __P((int, u_int *)); 247 extern wordtab_t *findword __P((wordtab_t *, char *)); 248 extern int ftov __P((int)); 249 extern char *ipf_geterror __P((int, ioctlfunc_t *)); 250 extern int genmask __P((int, char *, i6addr_t *)); 251 extern int gethost __P((int, char *, i6addr_t *)); 252 extern int geticmptype __P((int, char *)); 253 extern int getport __P((struct frentry *, char *, u_short *, char *)); 254 extern int getportproto __P((char *, int)); 255 extern int getproto __P((char *)); 256 extern char *getnattype __P((struct nat *)); 257 extern char *getsumd __P((u_32_t)); 258 extern u_32_t getoptbyname __P((char *)); 259 extern u_32_t getoptbyvalue __P((int)); 260 extern u_32_t getv6optbyname __P((char *)); 261 extern u_32_t getv6optbyvalue __P((int)); 262 extern char *icmptypename __P((int, int)); 263 extern void initparse __P((void)); 264 extern void ipf_dotuning __P((int, char *, ioctlfunc_t)); 265 extern int ipf_addrule __P((int, ioctlfunc_t, void *)); 266 extern void ipf_mutex_clean __P((void)); 267 extern int ipf_parsefile __P((int, addfunc_t, ioctlfunc_t *, char *)); 268 extern int ipf_parsesome __P((int, addfunc_t, ioctlfunc_t *, FILE *)); 269 extern void ipf_perror __P((int, char *)); 270 extern int ipf_perror_fd __P(( int, ioctlfunc_t, char *)); 271 extern void ipf_rwlock_clean __P((void)); 272 extern char *ipf_strerror __P((int)); 273 extern void ipferror __P((int, char *)); 274 extern int ipmon_parsefile __P((char *)); 275 extern int ipmon_parsesome __P((FILE *)); 276 extern int ipnat_addrule __P((int, ioctlfunc_t, void *)); 277 extern int ipnat_parsefile __P((int, addfunc_t, ioctlfunc_t, char *)); 278 extern int ipnat_parsesome __P((int, addfunc_t, ioctlfunc_t, FILE *)); 279 extern int ippool_parsefile __P((int, char *, ioctlfunc_t)); 280 extern int ippool_parsesome __P((int, FILE *, ioctlfunc_t)); 281 extern int kmemcpywrap __P((void *, void *, size_t)); 282 extern char *kvatoname __P((ipfunc_t, ioctlfunc_t)); 283 extern int load_dstlist __P((struct ippool_dst *, ioctlfunc_t, 284 ipf_dstnode_t *)); 285 extern int load_dstlistnode __P((int, char *, struct ipf_dstnode *, 286 ioctlfunc_t)); 287 extern alist_t *load_file __P((char *)); 288 extern int load_hash __P((struct iphtable_s *, struct iphtent_s *, 289 ioctlfunc_t)); 290 extern int load_hashnode __P((int, char *, struct iphtent_s *, int, 291 ioctlfunc_t)); 292 extern alist_t *load_http __P((char *)); 293 extern int load_pool __P((struct ip_pool_s *list, ioctlfunc_t)); 294 extern int load_poolnode __P((int, char *, ip_pool_node_t *, int, ioctlfunc_t)); 295 extern alist_t *load_url __P((char *)); 296 extern alist_t *make_range __P((int, struct in_addr, struct in_addr)); 297 extern void mb_hexdump __P((mb_t *, FILE *)); 298 extern ipfunc_t nametokva __P((char *, ioctlfunc_t)); 299 extern void nat_setgroupmap __P((struct ipnat *)); 300 extern int ntomask __P((int, int, u_32_t *)); 301 extern u_32_t optname __P((char ***, u_short *, int)); 302 extern wordtab_t *parsefields __P((wordtab_t *, char *)); 303 extern int *parseipfexpr __P((char *, char **)); 304 extern int parsewhoisline __P((char *, addrfamily_t *, addrfamily_t *)); 305 extern void pool_close __P((void)); 306 extern int pool_fd __P((void)); 307 extern int pool_ioctl __P((ioctlfunc_t, ioctlcmd_t, void *)); 308 extern int pool_open __P((void)); 309 extern char *portname __P((int, int)); 310 extern int pri_findname __P((char *)); 311 extern char *pri_toname __P((int)); 312 extern void print_toif __P((int, char *, char *, struct frdest *)); 313 extern void printaps __P((ap_session_t *, int, int)); 314 extern void printaddr __P((int, int, char *, int, u_32_t *, u_32_t *)); 315 extern void printbuf __P((char *, int, int)); 316 extern void printfieldhdr __P((wordtab_t *, wordtab_t *)); 317 extern void printfr __P((struct frentry *, ioctlfunc_t)); 318 extern struct iphtable_s *printhash __P((struct iphtable_s *, copyfunc_t, 319 char *, int, wordtab_t *)); 320 extern struct iphtable_s *printhash_live __P((iphtable_t *, int, char *, 321 int, wordtab_t *)); 322 extern ippool_dst_t *printdstl_live __P((ippool_dst_t *, int, char *, 323 int, wordtab_t *)); 324 extern void printhashdata __P((iphtable_t *, int)); 325 extern struct iphtent_s *printhashnode __P((struct iphtable_s *, 326 struct iphtent_s *, 327 copyfunc_t, int, wordtab_t *)); 328 extern void printhost __P((int, u_32_t *)); 329 extern void printhostmask __P((int, u_32_t *, u_32_t *)); 330 extern void printip __P((int, u_32_t *)); 331 extern void printlog __P((struct frentry *)); 332 extern void printlookup __P((char *, i6addr_t *addr, i6addr_t *mask)); 333 extern void printmask __P((int, u_32_t *)); 334 extern void printnataddr __P((int, char *, nat_addr_t *, int)); 335 extern void printnatfield __P((nat_t *, int)); 336 extern void printnatside __P((char *, nat_stat_side_t *)); 337 extern void printpacket __P((int, mb_t *)); 338 extern void printpacket6 __P((int, mb_t *)); 339 extern struct ippool_dst *printdstlist __P((struct ippool_dst *, copyfunc_t, 340 char *, int, ipf_dstnode_t *, 341 wordtab_t *)); 342 extern void printdstlistdata __P((ippool_dst_t *, int)); 343 extern ipf_dstnode_t *printdstlistnode __P((ipf_dstnode_t *, copyfunc_t, 344 int, wordtab_t *)); 345 extern void printdstlistpolicy __P((ippool_policy_t)); 346 extern struct ip_pool_s *printpool __P((struct ip_pool_s *, copyfunc_t, 347 char *, int, wordtab_t *)); 348 extern struct ip_pool_s *printpool_live __P((struct ip_pool_s *, int, 349 char *, int, wordtab_t *)); 350 extern void printpooldata __P((ip_pool_t *, int)); 351 extern void printpoolfield __P((void *, int, int)); 352 extern struct ip_pool_node *printpoolnode __P((struct ip_pool_node *, 353 int, wordtab_t *)); 354 extern void printproto __P((struct protoent *, int, struct ipnat *)); 355 extern void printportcmp __P((int, struct frpcmp *)); 356 extern void printstatefield __P((ipstate_t *, int)); 357 extern void printtqtable __P((ipftq_t *)); 358 extern void printtunable __P((ipftune_t *)); 359 extern void printunit __P((int)); 360 extern void optprint __P((u_short *, u_long, u_long)); 361 #ifdef USE_INET6 362 extern void optprintv6 __P((u_short *, u_long, u_long)); 363 #endif 364 extern int remove_hash __P((struct iphtable_s *, ioctlfunc_t)); 365 extern int remove_hashnode __P((int, char *, struct iphtent_s *, ioctlfunc_t)); 366 extern int remove_pool __P((ip_pool_t *, ioctlfunc_t)); 367 extern int remove_poolnode __P((int, char *, ip_pool_node_t *, ioctlfunc_t)); 368 extern u_char tcpflags __P((char *)); 369 extern void printc __P((struct frentry *)); 370 extern void printC __P((int)); 371 extern void emit __P((int, int, void *, struct frentry *)); 372 extern u_char secbit __P((int)); 373 extern u_char seclevel __P((char *)); 374 extern void printfraginfo __P((char *, struct ipfr *)); 375 extern void printifname __P((char *, char *, void *)); 376 extern char *hostname __P((int, const void *)); 377 extern struct ipstate *printstate __P((struct ipstate *, int, u_long)); 378 extern void printsbuf __P((char *)); 379 extern void printnat __P((struct ipnat *, int)); 380 extern void printactiveaddress __P((int, char *, i6addr_t *, char *)); 381 extern void printactivenat __P((struct nat *, int, u_long)); 382 extern void printhostmap __P((struct hostmap *, u_int)); 383 extern void printtcpflags __P((u_32_t, u_32_t)); 384 extern void printipfexpr __P((int *)); 385 extern void printstatefield __P((ipstate_t *, int)); 386 extern void printstatefieldhdr __P((int)); 387 extern int sendtrap_v1_0 __P((int, char *, char *, int, time_t)); 388 extern int sendtrap_v2_0 __P((int, char *, char *, int)); 389 extern int vtof __P((int)); 390 391 extern void set_variable __P((char *, char *)); 392 extern char *get_variable __P((char *, char **, int)); 393 extern void resetlexer __P((void)); 394 395 extern void debug __P((int, char *, ...)); 396 extern void verbose __P((int, char *, ...)); 397 extern void ipfkdebug __P((char *, ...)); 398 extern void ipfkverbose __P((char *, ...)); 399 400 #if SOLARIS 401 extern int gethostname __P((char *, int )); 402 extern void sync __P((void)); 403 #endif 404 405 #endif /* __IPF_H__ */ 406