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