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