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