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