| 1 | /* $NetBSD: ip_fil.h,v 1.5 2013/06/29 21:06:57 rmind Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (C) 2012 by Darren Reed. |
| 5 | * |
| 6 | * See the IPFILTER.LICENCE file for details on licencing. |
| 7 | * |
| 8 | * @(#)ip_fil.h 1.35 6/5/96 |
| 9 | * Id: ip_fil.h,v 1.1.1.2 2012/07/22 13:45:13 darrenr Exp |
| 10 | */ |
| 11 | |
| 12 | #ifndef _NETINET_IP_FIL_H_ |
| 13 | #define _NETINET_IP_FIL_H_ |
| 14 | |
| 15 | #include "netinet/ip_compat.h" |
| 16 | #include "netinet/ipf_rb.h" |
| 17 | #if NETBSD_GE_REV(104040000) |
| 18 | # include <sys/callout.h> |
| 19 | #endif |
| 20 | #if defined(BSD) && defined(_KERNEL) |
| 21 | # if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043) |
| 22 | # include <sys/select.h> |
| 23 | # else |
| 24 | # include <sys/selinfo.h> |
| 25 | # endif |
| 26 | #endif |
| 27 | |
| 28 | #if !defined(linux) || !defined(_KERNEL) |
| 29 | # include <netinet/in.h> |
| 30 | #endif |
| 31 | |
| 32 | #ifndef SOLARIS |
| 33 | # if (defined(sun) && (defined(__svr4__) || defined(__SVR4))) |
| 34 | # define SOLARIS 1 |
| 35 | # else |
| 36 | # define SOLARIS 0 |
| 37 | # endif |
| 38 | #endif |
| 39 | |
| 40 | #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) |
| 41 | # define SIOCADAFR _IOW('r', 60, struct ipfobj) |
| 42 | # define SIOCRMAFR _IOW('r', 61, struct ipfobj) |
| 43 | # define SIOCSETFF _IOW('r', 62, u_int) |
| 44 | # define SIOCGETFF _IOR('r', 63, u_int) |
| 45 | # define SIOCGETFS _IOWR('r', 64, struct ipfobj) |
| 46 | # define SIOCIPFFL _IOWR('r', 65, int) |
| 47 | # define SIOCIPFFB _IOR('r', 66, int) |
| 48 | # define SIOCADIFR _IOW('r', 67, struct ipfobj) |
| 49 | # define SIOCRMIFR _IOW('r', 68, struct ipfobj) |
| 50 | # define SIOCSWAPA _IOR('r', 69, u_int) |
| 51 | # define SIOCINAFR _IOW('r', 70, struct ipfobj) |
| 52 | # define SIOCINIFR _IOW('r', 71, struct ipfobj) |
| 53 | # define SIOCFRENB _IOW('r', 72, u_int) |
| 54 | # define SIOCFRSYN _IOW('r', 73, u_int) |
| 55 | # define SIOCFRZST _IOWR('r', 74, struct ipfobj) |
| 56 | # define SIOCZRLST _IOWR('r', 75, struct ipfobj) |
| 57 | # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) |
| 58 | # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) |
| 59 | # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj) |
| 60 | # define SIOCSTLCK _IOWR('r', 79, u_int) |
| 61 | # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) |
| 62 | # define SIOCSTGET _IOWR('r', 81, struct ipfobj) |
| 63 | # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) |
| 64 | # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj) |
| 65 | # define SIOCSETLG _IOWR('r', 84, int) |
| 66 | # define SIOCGETLG _IOWR('r', 85, int) |
| 67 | # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) |
| 68 | # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) |
| 69 | # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) |
| 70 | # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) |
| 71 | # define SIOCIPFL6 _IOWR('r', 90, int) |
| 72 | # define SIOCIPFITER _IOWR('r', 91, struct ipfobj) |
| 73 | # define SIOCGENITER _IOWR('r', 92, struct ipfobj) |
| 74 | # define SIOCGTABL _IOWR('r', 93, struct ipfobj) |
| 75 | # define SIOCIPFDELTOK _IOWR('r', 94, int) |
| 76 | # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj) |
| 77 | # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj) |
| 78 | # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) |
| 79 | # define SIOCIPFINTERROR _IOR('r', 98, int) |
| 80 | #else |
| 81 | # define SIOCADAFR _IOW(r, 60, struct ipfobj) |
| 82 | # define SIOCRMAFR _IOW(r, 61, struct ipfobj) |
| 83 | # define SIOCSETFF _IOW(r, 62, u_int) |
| 84 | # define SIOCGETFF _IOR(r, 63, u_int) |
| 85 | # define SIOCGETFS _IOWR(r, 64, struct ipfobj) |
| 86 | # define SIOCIPFFL _IOWR(r, 65, int) |
| 87 | # define SIOCIPFFB _IOR(r, 66, int) |
| 88 | # define SIOCADIFR _IOW(r, 67, struct ipfobj) |
| 89 | # define SIOCRMIFR _IOW(r, 68, struct ipfobj) |
| 90 | # define SIOCSWAPA _IOR(r, 69, u_int) |
| 91 | # define SIOCINAFR _IOW(r, 70, struct ipfobj) |
| 92 | # define SIOCINIFR _IOW(r, 71, struct ipfobj) |
| 93 | # define SIOCFRENB _IOW(r, 72, u_int) |
| 94 | # define SIOCFRSYN _IOW(r, 73, u_int) |
| 95 | # define SIOCFRZST _IOWR(r, 74, struct ipfobj) |
| 96 | # define SIOCZRLST _IOWR(r, 75, struct ipfobj) |
| 97 | # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) |
| 98 | # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) |
| 99 | # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj) |
| 100 | # define SIOCSTLCK _IOWR(r, 79, u_int) |
| 101 | # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) |
| 102 | # define SIOCSTGET _IOWR(r, 81, struct ipfobj) |
| 103 | # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) |
| 104 | # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj) |
| 105 | # define SIOCSETLG _IOWR(r, 84, int) |
| 106 | # define SIOCGETLG _IOWR(r, 85, int) |
| 107 | # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) |
| 108 | # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) |
| 109 | # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) |
| 110 | # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) |
| 111 | # define SIOCIPFL6 _IOWR(r, 90, int) |
| 112 | # define SIOCIPFITER _IOWR(r, 91, struct ipfobj) |
| 113 | # define SIOCGENITER _IOWR(r, 92, struct ipfobj) |
| 114 | # define SIOCGTABL _IOWR(r, 93, struct ipfobj) |
| 115 | # define SIOCIPFDELTOK _IOWR(r, 94, int) |
| 116 | # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj) |
| 117 | # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj) |
| 118 | # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) |
| 119 | # define SIOCIPFINTERROR _IOR(r, 98, int) |
| 120 | #endif |
| 121 | #define SIOCADDFR SIOCADAFR |
| 122 | #define SIOCDELFR SIOCRMAFR |
| 123 | #define SIOCINSFR SIOCINAFR |
| 124 | #define SIOCATHST SIOCSTAT1 |
| 125 | #define SIOCGFRST SIOCSTAT2 |
| 126 | |
| 127 | |
| 128 | struct ipscan; |
| 129 | struct ifnet; |
| 130 | struct ipf_main_softc_s; |
| 131 | |
| 132 | typedef int (* lookupfunc_t)(struct ipf_main_softc_s *, void *, |
| 133 | int, void *, u_int); |
| 134 | |
| 135 | /* |
| 136 | * i6addr is used as a container for both IPv4 and IPv6 addresses, as well |
| 137 | * as other types of objects, depending on its qualifier. |
| 138 | */ |
| 139 | #ifdef USE_INET6 |
| 140 | typedef union i6addr { |
| 141 | u_32_t i6[4]; |
| 142 | struct in_addr in4; |
| 143 | struct in6_addr in6; |
| 144 | void *vptr[2]; |
| 145 | lookupfunc_t lptr[2]; |
| 146 | struct { |
| 147 | u_short type; |
| 148 | u_short subtype; |
| 149 | int name; |
| 150 | } i6un; |
| 151 | } i6addr_t; |
| 152 | #else |
| 153 | typedef union i6addr { |
| 154 | u_32_t i6[4]; |
| 155 | struct in_addr in4; |
| 156 | void *vptr[2]; |
| 157 | lookupfunc_t lptr[2]; |
| 158 | struct { |
| 159 | u_short type; |
| 160 | u_short subtype; |
| 161 | int name; |
| 162 | } i6un; |
| 163 | } i6addr_t; |
| 164 | #endif |
| 165 | |
| 166 | #define in4_addr in4.s_addr |
| 167 | #define iplookupnum i6[1] |
| 168 | #define iplookupname i6un.name |
| 169 | #define iplookuptype i6un.type |
| 170 | #define iplookupsubtype i6un.subtype |
| 171 | /* |
| 172 | * NOTE: These DO overlap the above on 64bit systems and this IS recognised. |
| 173 | */ |
| 174 | #define iplookupptr vptr[0] |
| 175 | #define iplookupfunc lptr[1] |
| 176 | |
| 177 | /* Avoid casting to a type presuming 64-bit alignment. */ |
| 178 | #define I60(x) (((u_32_t *)(x))[0]) |
| 179 | #define I61(x) (((u_32_t *)(x))[1]) |
| 180 | #define I62(x) (((u_32_t *)(x))[2]) |
| 181 | #define I63(x) (((u_32_t *)(x))[3]) |
| 182 | #define HI60(x) ntohl(((u_32_t *)(x))[0]) |
| 183 | #define HI61(x) ntohl(((u_32_t *)(x))[1]) |
| 184 | #define HI62(x) ntohl(((u_32_t *)(x))[2]) |
| 185 | #define HI63(x) ntohl(((u_32_t *)(x))[3]) |
| 186 | |
| 187 | #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ |
| 188 | (I61(a) == I61(b)) && (I60(a) == I60(b))) |
| 189 | #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ |
| 190 | (I61(a) != I61(b)) || (I60(a) != I60(b))) |
| 191 | #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) |
| 192 | #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) |
| 193 | #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ |
| 194 | (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) |
| 195 | #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ |
| 196 | (HI60(a) == HI60(b) && \ |
| 197 | (ntohl(HI61(a)) > ntohl(HI61(b)) || \ |
| 198 | (HI61(a) == HI61(b) && \ |
| 199 | (ntohl(HI62(a)) > ntohl(HI62(b)) || \ |
| 200 | (HI62(a) == HI62(b) && \ |
| 201 | ntohl(HI63(a)) > ntohl(HI63(b)))))))) |
| 202 | #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \ |
| 203 | (HI60(a) == HI60(b) && \ |
| 204 | (ntohl(HI61(a)) < ntohl(HI61(b)) || \ |
| 205 | (HI61(a) == HI61(b) && \ |
| 206 | (ntohl(HI62(a)) < ntohl(HI62(b)) || \ |
| 207 | (HI62(a) == HI62(b) && \ |
| 208 | ntohl(HI63(a)) < ntohl(HI63(b)))))))) |
| 209 | #define NLADD(n,x) htonl(ntohl(n) + (x)) |
| 210 | #define IP6_INC(a) \ |
| 211 | do { u_32_t *_i6 = (u_32_t *)(a); \ |
| 212 | _i6[3] = NLADD(_i6[3], 1); \ |
| 213 | if (_i6[3] == 0) { \ |
| 214 | _i6[2] = NLADD(_i6[2], 1); \ |
| 215 | if (_i6[2] == 0) { \ |
| 216 | _i6[1] = NLADD(_i6[1], 1); \ |
| 217 | if (_i6[1] == 0) { \ |
| 218 | _i6[0] = NLADD(_i6[0], 1); \ |
| 219 | } \ |
| 220 | } \ |
| 221 | } \ |
| 222 | } while (0) |
| 223 | #define IP6_ADD(a,x,d) \ |
| 224 | do { i6addr_t *_s = (i6addr_t *)(a); \ |
| 225 | i6addr_t *_d = (i6addr_t *)(d); \ |
| 226 | _d->i6[0] = NLADD(_s->i6[0], x); \ |
| 227 | if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ |
| 228 | _d->i6[1] = NLADD(_d->i6[1], 1); \ |
| 229 | if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ |
| 230 | _d->i6[2] = NLADD(_d->i6[2], 1); \ |
| 231 | if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ |
| 232 | _d->i6[3] = NLADD(_d->i6[3], 1); \ |
| 233 | } \ |
| 234 | } \ |
| 235 | } \ |
| 236 | } while (0) |
| 237 | #define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \ |
| 238 | i6addr_t *_s2 = (i6addr_t *)(b); \ |
| 239 | i6addr_t *_d = (i6addr_t *)(d); \ |
| 240 | _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ |
| 241 | _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ |
| 242 | _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ |
| 243 | _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ |
| 244 | } while (0) |
| 245 | #define IP6_ANDASSIGN(a,m) \ |
| 246 | do { i6addr_t *_d = (i6addr_t *)(a); \ |
| 247 | i6addr_t *_m = (i6addr_t *)(m); \ |
| 248 | _d->i6[0] &= _m->i6[0]; \ |
| 249 | _d->i6[1] &= _m->i6[1]; \ |
| 250 | _d->i6[2] &= _m->i6[2]; \ |
| 251 | _d->i6[3] &= _m->i6[3]; \ |
| 252 | } while (0) |
| 253 | #define IP6_MASKEQ(a,m,b) \ |
| 254 | (((I60(a) & I60(m)) == I60(b)) && \ |
| 255 | ((I61(a) & I61(m)) == I61(b)) && \ |
| 256 | ((I62(a) & I62(m)) == I62(b)) && \ |
| 257 | ((I63(a) & I63(m)) == I63(b))) |
| 258 | #define IP6_MASKNEQ(a,m,b) \ |
| 259 | (((I60(a) & I60(m)) != I60(b)) || \ |
| 260 | ((I61(a) & I61(m)) != I61(b)) || \ |
| 261 | ((I62(a) & I62(m)) != I62(b)) || \ |
| 262 | ((I63(a) & I63(m)) != I63(b))) |
| 263 | #define IP6_MERGE(a,b,c) \ |
| 264 | do { i6addr_t *_d, *_s1, *_s2; \ |
| 265 | _d = (i6addr_t *)(a); \ |
| 266 | _s1 = (i6addr_t *)(b); \ |
| 267 | _s2 = (i6addr_t *)(c); \ |
| 268 | _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ |
| 269 | _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ |
| 270 | _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ |
| 271 | _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ |
| 272 | } while (0) |
| 273 | #define IP6_MASK(a,b,c) \ |
| 274 | do { i6addr_t *_d, *_s1, *_s2; \ |
| 275 | _d = (i6addr_t *)(a); \ |
| 276 | _s1 = (i6addr_t *)(b); \ |
| 277 | _s2 = (i6addr_t *)(c); \ |
| 278 | _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \ |
| 279 | _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \ |
| 280 | _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \ |
| 281 | _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \ |
| 282 | } while (0) |
| 283 | #define IP6_SETONES(a) \ |
| 284 | do { i6addr_t *_d = (i6addr_t *)(a); \ |
| 285 | _d->i6[0] = 0xffffffff; \ |
| 286 | _d->i6[1] = 0xffffffff; \ |
| 287 | _d->i6[2] = 0xffffffff; \ |
| 288 | _d->i6[3] = 0xffffffff; \ |
| 289 | } while (0) |
| 290 | |
| 291 | typedef union ipso_u { |
| 292 | u_short ipso_ripso[2]; |
| 293 | u_32_t ipso_doi; |
| 294 | } ipso_t; |
| 295 | |
| 296 | typedef struct fr_ip { |
| 297 | u_32_t fi_v:4; /* IP version */ |
| 298 | u_32_t fi_xx:4; /* spare */ |
| 299 | u_32_t fi_tos:8; /* IP packet TOS */ |
| 300 | u_32_t fi_ttl:8; /* IP packet TTL */ |
| 301 | u_32_t fi_p:8; /* IP packet protocol */ |
| 302 | u_32_t fi_optmsk; /* bitmask composed from IP options */ |
| 303 | i6addr_t fi_src; /* source address from packet */ |
| 304 | i6addr_t fi_dst; /* destination address from packet */ |
| 305 | ipso_t fi_ipso; /* IP security options */ |
| 306 | u_32_t fi_flx; /* packet flags */ |
| 307 | u_32_t fi_tcpmsk; /* TCP options set/reset */ |
| 308 | u_32_t fi_ports[2]; /* TCP ports */ |
| 309 | u_char fi_tcpf; /* TCP flags */ |
| 310 | u_char fi_sensitivity; |
| 311 | u_char fi_xxx[2]; /* pad */ |
| 312 | } fr_ip_t; |
| 313 | |
| 314 | /* |
| 315 | * For use in fi_flx |
| 316 | */ |
| 317 | #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ |
| 318 | #define FI_OPTIONS 0x0002 |
| 319 | #define FI_FRAG 0x0004 |
| 320 | #define FI_SHORT 0x0008 |
| 321 | #define FI_NATED 0x0010 |
| 322 | #define FI_MULTICAST 0x0020 |
| 323 | #define FI_BROADCAST 0x0040 |
| 324 | #define FI_MBCAST 0x0080 |
| 325 | #define FI_STATE 0x0100 |
| 326 | #define FI_BADNAT 0x0200 |
| 327 | #define FI_BAD 0x0400 |
| 328 | #define FI_OOW 0x0800 /* Out of state window, else match */ |
| 329 | #define FI_ICMPERR 0x1000 |
| 330 | #define FI_FRAGBODY 0x2000 |
| 331 | #define FI_BADSRC 0x4000 |
| 332 | #define FI_LOWTTL 0x8000 |
| 333 | #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */ |
| 334 | #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ |
| 335 | #define FI_WITH 0x5effe /* Not FI_TCPUDP */ |
| 336 | #define FI_V6EXTHDR 0x10000 |
| 337 | #define FI_COALESCE 0x20000 |
| 338 | #define FI_NEWNAT 0x40000 |
| 339 | #define FI_ICMPQUERY 0x80000 |
| 340 | #define FI_ENCAP 0x100000 /* encap/decap with NAT */ |
| 341 | #define FI_AH 0x200000 /* AH header present */ |
| 342 | #define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */ |
| 343 | #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ |
| 344 | #define FI_NOWILD 0x40000000 /* Do not do wildcard searches */ |
| 345 | #define FI_IGNORE 0x80000000 |
| 346 | |
| 347 | #define fi_secmsk fi_ipso.ipso_ripso[0] |
| 348 | #define fi_auth fi_ipso.ipso_ripso[1] |
| 349 | #define fi_doi fi_ipso.ipso_doi |
| 350 | #define fi_saddr fi_src.in4.s_addr |
| 351 | #define fi_daddr fi_dst.in4.s_addr |
| 352 | #define fi_srcnum fi_src.iplookupnum |
| 353 | #define fi_dstnum fi_dst.iplookupnum |
| 354 | #define fi_srcname fi_src.iplookupname |
| 355 | #define fi_dstname fi_dst.iplookupname |
| 356 | #define fi_srctype fi_src.iplookuptype |
| 357 | #define fi_dsttype fi_dst.iplookuptype |
| 358 | #define fi_srcsubtype fi_src.iplookupsubtype |
| 359 | #define fi_dstsubtype fi_dst.iplookupsubtype |
| 360 | #define fi_srcptr fi_src.iplookupptr |
| 361 | #define fi_dstptr fi_dst.iplookupptr |
| 362 | #define fi_srcfunc fi_src.iplookupfunc |
| 363 | #define fi_dstfunc fi_dst.iplookupfunc |
| 364 | |
| 365 | |
| 366 | /* |
| 367 | * These are both used by the state and NAT code to indicate that one port or |
| 368 | * the other should be treated as a wildcard. |
| 369 | * NOTE: When updating, check bit masks in ip_state.h and update there too. |
| 370 | */ |
| 371 | #define SI_W_SPORT 0x00000100 |
| 372 | #define SI_W_DPORT 0x00000200 |
| 373 | #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) |
| 374 | #define SI_W_SADDR 0x00000400 |
| 375 | #define SI_W_DADDR 0x00000800 |
| 376 | #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) |
| 377 | #define SI_NEWFR 0x00001000 |
| 378 | #define SI_CLONE 0x00002000 |
| 379 | #define SI_CLONED 0x00004000 |
| 380 | #define SI_NEWCLONE 0x00008000 |
| 381 | |
| 382 | typedef struct { |
| 383 | u_short fda_ports[2]; |
| 384 | u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */ |
| 385 | } frdat_t; |
| 386 | |
| 387 | typedef enum fr_breasons_e { |
| 388 | FRB_BLOCKED = 0, |
| 389 | FRB_LOGFAIL = 1, |
| 390 | FRB_PPSRATE = 2, |
| 391 | FRB_JUMBO = 3, |
| 392 | FRB_MAKEFRIP = 4, |
| 393 | FRB_STATEADD = 5, |
| 394 | FRB_UPDATEIPID = 6, |
| 395 | FRB_LOGFAIL2 = 7, |
| 396 | FRB_DECAPFRIP = 8, |
| 397 | FRB_AUTHNEW = 9, |
| 398 | FRB_AUTHCAPTURE = 10, |
| 399 | FRB_COALESCE = 11, |
| 400 | FRB_PULLUP = 12, |
| 401 | FRB_AUTHFEEDBACK = 13, |
| 402 | FRB_BADFRAG = 14, |
| 403 | FRB_NATV4 = 15, |
| 404 | FRB_NATV6 = 16, |
| 405 | } fr_breason_t; |
| 406 | |
| 407 | #define FRB_MAX_VALUE 16 |
| 408 | |
| 409 | typedef enum ipf_cksum_e { |
| 410 | FI_CK_BAD = -1, |
| 411 | FI_CK_NEEDED = 0, |
| 412 | FI_CK_SUMOK = 1, |
| 413 | FI_CK_L4PART = 2, |
| 414 | FI_CK_L4FULL = 4 |
| 415 | } ipf_cksum_t; |
| 416 | |
| 417 | typedef struct fr_info { |
| 418 | void *fin_main_soft; |
| 419 | void *fin_ifp; /* interface packet is `on' */ |
| 420 | struct frentry *fin_fr; /* last matching rule */ |
| 421 | int fin_out; /* in or out ? 1 == out, 0 == in */ |
| 422 | fr_ip_t fin_fi; /* IP Packet summary */ |
| 423 | frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */ |
| 424 | int fin_dlen; /* length of data portion of packet */ |
| 425 | int fin_plen; |
| 426 | u_32_t fin_rule; /* rule # last matched */ |
| 427 | u_short fin_hlen; /* length of IP header in bytes */ |
| 428 | char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ |
| 429 | void *fin_dp; /* start of data past IP header */ |
| 430 | /* |
| 431 | * Fields after fin_dp aren't used for compression of log records. |
| 432 | * fin_fi contains the IP version (fin_family) |
| 433 | * fin_rule isn't included because adding a new rule can change it but |
| 434 | * not change fin_fr. fin_rule is the rule number reported. |
| 435 | * It isn't necessary to include fin_crc because that is checked |
| 436 | * for explicitly, before calling bcmp. |
| 437 | */ |
| 438 | u_32_t fin_crc; /* Simple calculation for logging */ |
| 439 | int fin_family; /* AF_INET, etc. */ |
| 440 | int fin_icode; /* ICMP error to return */ |
| 441 | int fin_mtu; /* MTU input for ICMP need-frag */ |
| 442 | int fin_rev; /* state only: 1 = reverse */ |
| 443 | int fin_ipoff; /* # bytes from buffer start to hdr */ |
| 444 | u_32_t fin_id; /* IP packet id field */ |
| 445 | u_short fin_l4hlen; /* length of L4 header, if known */ |
| 446 | u_short fin_off; |
| 447 | int fin_depth; /* Group nesting depth */ |
| 448 | int fin_error; /* Error code to return */ |
| 449 | ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */ |
| 450 | fr_breason_t fin_reason; /* why auto blocked */ |
| 451 | u_int fin_pktnum; |
| 452 | void *fin_nattag; |
| 453 | struct frdest *fin_dif; |
| 454 | struct frdest *fin_tif; |
| 455 | union { |
| 456 | ip_t *fip_ip; |
| 457 | #ifdef USE_INET6 |
| 458 | ip6_t *fip_ip6; |
| 459 | #endif |
| 460 | } fin_ipu; |
| 461 | mb_t **fin_mp; /* pointer to pointer to mbuf */ |
| 462 | mb_t *fin_m; /* pointer to mbuf */ |
| 463 | #ifdef MENTAT |
| 464 | mb_t *fin_qfm; /* pointer to mblk where pkt starts */ |
| 465 | void *fin_qpi; |
| 466 | char fin_ifname[LIFNAMSIZ]; |
| 467 | #endif |
| 468 | #ifdef __sgi |
| 469 | void *fin_hbuf; |
| 470 | #endif |
| 471 | void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */ |
| 472 | } fr_info_t; |
| 473 | |
| 474 | #define fin_ip fin_ipu.fip_ip |
| 475 | #define fin_ip6 fin_ipu.fip_ip6 |
| 476 | #define fin_v fin_fi.fi_v |
| 477 | #define fin_p fin_fi.fi_p |
| 478 | #define fin_flx fin_fi.fi_flx |
| 479 | #define fin_optmsk fin_fi.fi_optmsk |
| 480 | #define fin_secmsk fin_fi.fi_secmsk |
| 481 | #define fin_doi fin_fi.fi_doi |
| 482 | #define fin_auth fin_fi.fi_auth |
| 483 | #define fin_src fin_fi.fi_src.in4 |
| 484 | #define fin_saddr fin_fi.fi_saddr |
| 485 | #define fin_dst fin_fi.fi_dst.in4 |
| 486 | #define fin_daddr fin_fi.fi_daddr |
| 487 | #define fin_data fin_fi.fi_ports |
| 488 | #define fin_sport fin_fi.fi_ports[0] |
| 489 | #define fin_dport fin_fi.fi_ports[1] |
| 490 | #define fin_tcpf fin_fi.fi_tcpf |
| 491 | #define fin_src6 fin_fi.fi_src |
| 492 | #define fin_dst6 fin_fi.fi_dst |
| 493 | #define fin_srcip6 fin_fi.fi_src.in6 |
| 494 | #define fin_dstip6 fin_fi.fi_dst.in6 |
| 495 | |
| 496 | #define IPF_IN 0 |
| 497 | #define IPF_OUT 1 |
| 498 | |
| 499 | typedef struct frentry *(*ipfunc_t)(fr_info_t *, u_32_t *); |
| 500 | typedef int (*ipfuncinit_t)(struct ipf_main_softc_s *, |
| 501 | struct frentry *); |
| 502 | |
| 503 | typedef struct ipfunc_resolve { |
| 504 | char ipfu_name[32]; |
| 505 | ipfunc_t ipfu_addr; |
| 506 | ipfuncinit_t ipfu_init; |
| 507 | ipfuncinit_t ipfu_fini; |
| 508 | } ipfunc_resolve_t; |
| 509 | |
| 510 | /* |
| 511 | * Size for compares on fr_info structures |
| 512 | */ |
| 513 | #define FI_CSIZE offsetof(fr_info_t, fin_icode) |
| 514 | #define FI_LCSIZE offsetof(fr_info_t, fin_dp) |
| 515 | |
| 516 | /* |
| 517 | * Size for copying cache fr_info structure |
| 518 | */ |
| 519 | #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) |
| 520 | |
| 521 | /* |
| 522 | * Structure for holding IPFilter's tag information |
| 523 | */ |
| 524 | #define IPFTAG_LEN 16 |
| 525 | typedef struct { |
| 526 | union { |
| 527 | u_32_t iptu_num[4]; |
| 528 | char iptu_tag[IPFTAG_LEN]; |
| 529 | } ipt_un; |
| 530 | int ipt_not; |
| 531 | } ipftag_t; |
| 532 | |
| 533 | #define ipt_tag ipt_un.iptu_tag |
| 534 | #define ipt_num ipt_un.iptu_num |
| 535 | |
| 536 | /* |
| 537 | * Structure to define address for pool lookups. |
| 538 | */ |
| 539 | typedef struct { |
| 540 | u_char adf_len; |
| 541 | sa_family_t adf_family; |
| 542 | u_char adf_xxx[2]; |
| 543 | i6addr_t adf_addr; |
| 544 | } addrfamily_t; |
| 545 | |
| 546 | |
| 547 | RBI_LINK(ipf_rb, host_node_s); |
| 548 | |
| 549 | typedef struct host_node_s { |
| 550 | RBI_FIELD(ipf_rb) hn_entry; |
| 551 | addrfamily_t hn_addr; |
| 552 | int hn_active; |
| 553 | } host_node_t; |
| 554 | |
| 555 | typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t; |
| 556 | |
| 557 | typedef struct host_track_s { |
| 558 | ipf_rb_head_t ht_root; |
| 559 | int ht_max_nodes; |
| 560 | int ht_max_per_node; |
| 561 | int ht_netmask; |
| 562 | int ht_cur_nodes; |
| 563 | } host_track_t; |
| 564 | |
| 565 | |
| 566 | typedef enum fr_dtypes_e { |
| 567 | FRD_NORMAL = 0, |
| 568 | FRD_DSTLIST |
| 569 | } fr_dtypes_t; |
| 570 | /* |
| 571 | * This structure is used to hold information about the next hop for where |
| 572 | * to forward a packet. |
| 573 | */ |
| 574 | typedef struct frdest { |
| 575 | void *fd_ptr; |
| 576 | addrfamily_t fd_addr; |
| 577 | fr_dtypes_t fd_type; |
| 578 | int fd_name; |
| 579 | int fd_local; |
| 580 | } frdest_t; |
| 581 | |
| 582 | #define fd_ip6 fd_addr.adf_addr |
| 583 | #define fd_ip fd_ip6.in4 |
| 584 | |
| 585 | |
| 586 | typedef enum fr_ctypes_e { |
| 587 | FR_NONE = 0, |
| 588 | FR_EQUAL, |
| 589 | FR_NEQUAL, |
| 590 | FR_LESST, |
| 591 | FR_GREATERT, |
| 592 | FR_LESSTE, |
| 593 | FR_GREATERTE, |
| 594 | FR_OUTRANGE, |
| 595 | FR_INRANGE, |
| 596 | FR_INCRANGE |
| 597 | } fr_ctypes_t; |
| 598 | |
| 599 | /* |
| 600 | * This structure holds information about a port comparison. |
| 601 | */ |
| 602 | typedef struct frpcmp { |
| 603 | fr_ctypes_t frp_cmp; /* data for port comparisons */ |
| 604 | u_32_t frp_port; /* top port for <> and >< */ |
| 605 | u_32_t frp_top; /* top port for <> and >< */ |
| 606 | } frpcmp_t; |
| 607 | |
| 608 | |
| 609 | /* |
| 610 | * Structure containing all the relevant TCP things that can be checked in |
| 611 | * a filter rule. |
| 612 | */ |
| 613 | typedef struct frtuc { |
| 614 | u_char ftu_tcpfm; /* tcp flags mask */ |
| 615 | u_char ftu_tcpf; /* tcp flags */ |
| 616 | frpcmp_t ftu_src; |
| 617 | frpcmp_t ftu_dst; |
| 618 | } frtuc_t; |
| 619 | |
| 620 | #define ftu_scmp ftu_src.frp_cmp |
| 621 | #define ftu_dcmp ftu_dst.frp_cmp |
| 622 | #define ftu_sport ftu_src.frp_port |
| 623 | #define ftu_dport ftu_dst.frp_port |
| 624 | #define ftu_stop ftu_src.frp_top |
| 625 | #define ftu_dtop ftu_dst.frp_top |
| 626 | |
| 627 | #define FR_TCPFMAX 0x3f |
| 628 | |
| 629 | typedef enum fr_atypes_e { |
| 630 | FRI_NONE = -1, /* For LHS of NAT */ |
| 631 | FRI_NORMAL = 0, /* Normal address */ |
| 632 | FRI_DYNAMIC, /* dynamic address */ |
| 633 | FRI_LOOKUP, /* address is a pool # */ |
| 634 | FRI_RANGE, /* address/mask is a range */ |
| 635 | FRI_NETWORK, /* network address from if */ |
| 636 | FRI_BROADCAST, /* broadcast address from if */ |
| 637 | FRI_PEERADDR, /* Peer address for P-to-P */ |
| 638 | FRI_NETMASKED, /* network address with netmask from if */ |
| 639 | FRI_SPLIT, /* For NAT compatibility */ |
| 640 | FRI_INTERFACE /* address is based on interface name */ |
| 641 | } fr_atypes_t; |
| 642 | |
| 643 | /* |
| 644 | * This structure makes up what is considered to be the IPFilter specific |
| 645 | * matching components of a filter rule, as opposed to the data structures |
| 646 | * used to define the result which are in frentry_t and not here. |
| 647 | */ |
| 648 | typedef struct fripf { |
| 649 | fr_ip_t fri_ip; |
| 650 | fr_ip_t fri_mip; /* mask structure */ |
| 651 | |
| 652 | u_short fri_icmpm; /* data for ICMP packets (mask) */ |
| 653 | u_short fri_icmp; |
| 654 | |
| 655 | frtuc_t fri_tuc; |
| 656 | fr_atypes_t fri_satype; /* addres type */ |
| 657 | fr_atypes_t fri_datype; /* addres type */ |
| 658 | int fri_sifpidx; /* doing dynamic addressing */ |
| 659 | int fri_difpidx; /* index into fr_ifps[] to use when */ |
| 660 | } fripf_t; |
| 661 | |
| 662 | #define fri_dlookup fri_mip.fi_dst |
| 663 | #define fri_slookup fri_mip.fi_src |
| 664 | #define fri_dstnum fri_mip.fi_dstnum |
| 665 | #define fri_srcnum fri_mip.fi_srcnum |
| 666 | #define fri_dstname fri_mip.fi_dstname |
| 667 | #define fri_srcname fri_mip.fi_srcname |
| 668 | #define fri_dstptr fri_mip.fi_dstptr |
| 669 | #define fri_srcptr fri_mip.fi_srcptr |
| 670 | |
| 671 | |
| 672 | typedef enum fr_rtypes_e { |
| 673 | FR_T_NONE = 0, |
| 674 | FR_T_IPF, /* IPF structures */ |
| 675 | FR_T_BPFOPC, /* BPF opcode */ |
| 676 | FR_T_CALLFUNC, /* callout to function in fr_func only */ |
| 677 | FR_T_COMPIPF, /* compiled C code */ |
| 678 | FR_T_IPFEXPR, /* IPF expression */ |
| 679 | FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */ |
| 680 | FR_T_IPF_BUILTIN, |
| 681 | FR_T_BPFOPC_BUILTIN, |
| 682 | FR_T_CALLFUNC_BUILTIN, |
| 683 | FR_T_COMPIPF_BUILTIN, |
| 684 | FR_T_IPFEXPR_BUILTIN |
| 685 | } fr_rtypes_t; |
| 686 | |
| 687 | typedef struct frentry * (* frentfunc_t)(fr_info_t *); |
| 688 | |
| 689 | typedef struct frentry { |
| 690 | ipfmutex_t fr_lock; |
| 691 | struct frentry *fr_next; |
| 692 | struct frentry **fr_pnext; |
| 693 | struct frgroup *fr_grp; |
| 694 | struct frgroup *fr_grphead; |
| 695 | struct frgroup *fr_icmpgrp; |
| 696 | struct ipscan *fr_isc; |
| 697 | struct frentry *fr_dnext; /* 2 fr_die linked list pointers */ |
| 698 | struct frentry **fr_pdnext; |
| 699 | void *fr_ifas[4]; |
| 700 | void *fr_ptr; /* for use with fr_arg */ |
| 701 | int ; /* text comment for rule */ |
| 702 | int fr_size; /* size of this structure */ |
| 703 | int fr_ref; /* reference count */ |
| 704 | int fr_statecnt; /* state count - for limit rules */ |
| 705 | u_32_t fr_die; /* only used on loading the rule */ |
| 706 | u_int fr_cksum; /* checksum on filter rules for performance */ |
| 707 | /* |
| 708 | * The line number from a file is here because we need to be able to |
| 709 | * match the rule generated with ``grep rule ipf.conf | ipf -rf -'' |
| 710 | * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be |
| 711 | * on the other side of fr_func. |
| 712 | */ |
| 713 | int fr_flineno; /* line number from conf file */ |
| 714 | /* |
| 715 | * These are only incremented when a packet matches this rule and |
| 716 | * it is the last match |
| 717 | */ |
| 718 | U_QUAD_T fr_hits; |
| 719 | U_QUAD_T fr_bytes; |
| 720 | |
| 721 | /* |
| 722 | * For PPS rate limiting |
| 723 | * fr_lpu is used to always have the same size for this field, |
| 724 | * allocating 64bits for seconds and 32bits for milliseconds. |
| 725 | */ |
| 726 | union { |
| 727 | struct timeval frp_lastpkt; |
| 728 | char frp_bytes[12]; |
| 729 | } fr_lpu; |
| 730 | int fr_curpps; |
| 731 | |
| 732 | union { |
| 733 | void *fru_data; |
| 734 | char *fru_caddr; |
| 735 | fripf_t *fru_ipf; |
| 736 | frentfunc_t fru_func; |
| 737 | } fr_dun; |
| 738 | |
| 739 | /* |
| 740 | * Fields after this may not change whilst in the kernel. |
| 741 | */ |
| 742 | ipfunc_t fr_func; /* call this function */ |
| 743 | int fr_dsize; |
| 744 | int fr_pps; |
| 745 | fr_rtypes_t fr_type; |
| 746 | u_32_t fr_flags; /* per-rule flags && options (see below) */ |
| 747 | u_32_t fr_logtag; /* user defined log tag # */ |
| 748 | u_32_t fr_collect; /* collection number */ |
| 749 | u_int fr_arg; /* misc. numeric arg for rule */ |
| 750 | u_int fr_loglevel; /* syslog log facility + priority */ |
| 751 | u_char fr_family; |
| 752 | u_char fr_icode; /* return ICMP code */ |
| 753 | int fr_group; /* group to which this rule belongs */ |
| 754 | int fr_grhead; /* group # which this rule starts */ |
| 755 | int fr_ifnames[4]; |
| 756 | int fr_isctag; |
| 757 | int fr_rpc; /* XID Filtering */ |
| 758 | ipftag_t fr_nattag; |
| 759 | frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ |
| 760 | frdest_t fr_dif; /* duplicate packet interface */ |
| 761 | /* |
| 762 | * These are all options related to stateful filtering |
| 763 | */ |
| 764 | host_track_t fr_srctrack; |
| 765 | int fr_nostatelog; |
| 766 | int fr_statemax; /* max reference count */ |
| 767 | int fr_icmphead; /* ICMP group for state options */ |
| 768 | u_int fr_age[2]; /* non-TCP state timeouts */ |
| 769 | /* |
| 770 | * How big is the name buffer at the end? |
| 771 | */ |
| 772 | int fr_namelen; |
| 773 | char fr_names[1]; |
| 774 | } frentry_t; |
| 775 | |
| 776 | #define fr_lastpkt fr_lpu.frp_lastpkt |
| 777 | #define fr_caddr fr_dun.fru_caddr |
| 778 | #define fr_data fr_dun.fru_data |
| 779 | #define fr_dfunc fr_dun.fru_func |
| 780 | #define fr_ipf fr_dun.fru_ipf |
| 781 | #define fr_ip fr_ipf->fri_ip |
| 782 | #define fr_mip fr_ipf->fri_mip |
| 783 | #define fr_icmpm fr_ipf->fri_icmpm |
| 784 | #define fr_icmp fr_ipf->fri_icmp |
| 785 | #define fr_tuc fr_ipf->fri_tuc |
| 786 | #define fr_satype fr_ipf->fri_satype |
| 787 | #define fr_datype fr_ipf->fri_datype |
| 788 | #define fr_sifpidx fr_ipf->fri_sifpidx |
| 789 | #define fr_difpidx fr_ipf->fri_difpidx |
| 790 | #define fr_proto fr_ip.fi_p |
| 791 | #define fr_mproto fr_mip.fi_p |
| 792 | #define fr_ttl fr_ip.fi_ttl |
| 793 | #define fr_mttl fr_mip.fi_ttl |
| 794 | #define fr_tos fr_ip.fi_tos |
| 795 | #define fr_mtos fr_mip.fi_tos |
| 796 | #define fr_tcpfm fr_tuc.ftu_tcpfm |
| 797 | #define fr_tcpf fr_tuc.ftu_tcpf |
| 798 | #define fr_scmp fr_tuc.ftu_scmp |
| 799 | #define fr_dcmp fr_tuc.ftu_dcmp |
| 800 | #define fr_dport fr_tuc.ftu_dport |
| 801 | #define fr_sport fr_tuc.ftu_sport |
| 802 | #define fr_stop fr_tuc.ftu_stop |
| 803 | #define fr_dtop fr_tuc.ftu_dtop |
| 804 | #define fr_dst fr_ip.fi_dst.in4 |
| 805 | #define fr_dst6 fr_ip.fi_dst |
| 806 | #define fr_daddr fr_ip.fi_dst.in4.s_addr |
| 807 | #define fr_src fr_ip.fi_src.in4 |
| 808 | #define fr_src6 fr_ip.fi_src |
| 809 | #define fr_saddr fr_ip.fi_src.in4.s_addr |
| 810 | #define fr_dmsk fr_mip.fi_dst.in4 |
| 811 | #define fr_dmsk6 fr_mip.fi_dst |
| 812 | #define fr_dmask fr_mip.fi_dst.in4.s_addr |
| 813 | #define fr_smsk fr_mip.fi_src.in4 |
| 814 | #define fr_smsk6 fr_mip.fi_src |
| 815 | #define fr_smask fr_mip.fi_src.in4.s_addr |
| 816 | #define fr_dstnum fr_ip.fi_dstnum |
| 817 | #define fr_srcnum fr_ip.fi_srcnum |
| 818 | #define fr_dlookup fr_ip.fi_dst |
| 819 | #define fr_slookup fr_ip.fi_src |
| 820 | #define fr_dstname fr_ip.fi_dstname |
| 821 | #define fr_srcname fr_ip.fi_srcname |
| 822 | #define fr_dsttype fr_ip.fi_dsttype |
| 823 | #define fr_srctype fr_ip.fi_srctype |
| 824 | #define fr_dstsubtype fr_ip.fi_dstsubtype |
| 825 | #define fr_srcsubtype fr_ip.fi_srcsubtype |
| 826 | #define fr_dstptr fr_mip.fi_dstptr |
| 827 | #define fr_srcptr fr_mip.fi_srcptr |
| 828 | #define fr_dstfunc fr_mip.fi_dstfunc |
| 829 | #define fr_srcfunc fr_mip.fi_srcfunc |
| 830 | #define fr_optbits fr_ip.fi_optmsk |
| 831 | #define fr_optmask fr_mip.fi_optmsk |
| 832 | #define fr_secbits fr_ip.fi_secmsk |
| 833 | #define fr_secmask fr_mip.fi_secmsk |
| 834 | #define fr_authbits fr_ip.fi_auth |
| 835 | #define fr_authmask fr_mip.fi_auth |
| 836 | #define fr_doi fr_ip.fi_doi |
| 837 | #define fr_doimask fr_mip.fi_doi |
| 838 | #define fr_flx fr_ip.fi_flx |
| 839 | #define fr_mflx fr_mip.fi_flx |
| 840 | #define fr_ifa fr_ifas[0] |
| 841 | #define fr_oifa fr_ifas[2] |
| 842 | #define fr_tif fr_tifs[0] |
| 843 | #define fr_rif fr_tifs[1] |
| 844 | |
| 845 | #define FR_NOLOGTAG 0 |
| 846 | |
| 847 | #define FR_CMPSIZ (sizeof(struct frentry) - \ |
| 848 | offsetof(struct frentry, fr_func)) |
| 849 | #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n |
| 850 | |
| 851 | |
| 852 | /* |
| 853 | * fr_flags |
| 854 | */ |
| 855 | #define FR_BLOCK 0x00001 /* do not allow packet to pass */ |
| 856 | #define FR_PASS 0x00002 /* allow packet to pass */ |
| 857 | #define FR_AUTH 0x00003 /* use authentication */ |
| 858 | #define FR_PREAUTH 0x00004 /* require preauthentication */ |
| 859 | #define FR_ACCOUNT 0x00005 /* Accounting rule */ |
| 860 | #define FR_SKIP 0x00006 /* skip rule */ |
| 861 | #define FR_DECAPSULATE 0x00008 /* decapsulate rule */ |
| 862 | #define FR_CALL 0x00009 /* call rule */ |
| 863 | #define FR_CMDMASK 0x0000f |
| 864 | #define FR_LOG 0x00010 /* Log */ |
| 865 | #define FR_LOGB 0x00011 /* Log-fail */ |
| 866 | #define FR_LOGP 0x00012 /* Log-pass */ |
| 867 | #define FR_LOGMASK (FR_LOG|FR_CMDMASK) |
| 868 | #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ |
| 869 | #define FR_NOTSRCIP 0x00040 |
| 870 | #define FR_NOTDSTIP 0x00080 |
| 871 | #define FR_QUICK 0x00100 /* match & stop processing list */ |
| 872 | #define FR_KEEPFRAG 0x00200 /* keep fragment information */ |
| 873 | #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ |
| 874 | #define FR_FASTROUTE 0x00800 /* bypass normal routing */ |
| 875 | #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ |
| 876 | #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ |
| 877 | #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ |
| 878 | #define FR_OUTQUE 0x04000 /* outgoing packets */ |
| 879 | #define FR_INQUE 0x08000 /* ingoing packets */ |
| 880 | #define FR_LOGBODY 0x10000 /* Log the body */ |
| 881 | #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ |
| 882 | #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ |
| 883 | #define FR_STLOOSE 0x80000 /* loose state checking */ |
| 884 | #define FR_FRSTRICT 0x100000 /* strict frag. cache */ |
| 885 | #define FR_STSTRICT 0x200000 /* strict keep state */ |
| 886 | #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ |
| 887 | #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ |
| 888 | #define FR_STATESYNC 0x1000000 /* synchronize state to slave */ |
| 889 | #define FR_COPIED 0x2000000 /* copied from user space */ |
| 890 | #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */ |
| 891 | #define FR_NOMATCH 0x8000000 /* no match occured */ |
| 892 | /* 0x10000000 FF_LOGPASS */ |
| 893 | /* 0x20000000 FF_LOGBLOCK */ |
| 894 | /* 0x40000000 FF_LOGNOMATCH */ |
| 895 | /* 0x80000000 FF_BLOCKNONIP */ |
| 896 | |
| 897 | #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) |
| 898 | #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) |
| 899 | #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) |
| 900 | #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) |
| 901 | #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) |
| 902 | #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) |
| 903 | #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) |
| 904 | #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE) |
| 905 | #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) |
| 906 | #define FR_INOUT (FR_INQUE|FR_OUTQUE) |
| 907 | |
| 908 | /* |
| 909 | * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags |
| 910 | */ |
| 911 | #define FF_LOGPASS 0x10000000 |
| 912 | #define FF_LOGBLOCK 0x20000000 |
| 913 | #define FF_LOGNOMATCH 0x40000000 |
| 914 | #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) |
| 915 | #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ |
| 916 | |
| 917 | |
| 918 | /* |
| 919 | * Structure that passes information on what/how to flush to the kernel. |
| 920 | */ |
| 921 | typedef struct ipfflush { |
| 922 | int ipflu_how; |
| 923 | int ipflu_arg; |
| 924 | } ipfflush_t; |
| 925 | |
| 926 | |
| 927 | /* |
| 928 | * |
| 929 | */ |
| 930 | typedef struct ipfgetctl { |
| 931 | u_int ipfg_min; /* min value */ |
| 932 | u_int ipfg_current; /* current value */ |
| 933 | u_int ipfg_max; /* max value */ |
| 934 | u_int ipfg_default; /* default value */ |
| 935 | u_int ipfg_steps; /* value increments */ |
| 936 | char ipfg_name[40]; /* tag name for this control */ |
| 937 | } ipfgetctl_t; |
| 938 | |
| 939 | typedef struct ipfsetctl { |
| 940 | int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ |
| 941 | u_int ipfs_value; /* min value */ |
| 942 | char ipfs_name[40]; /* tag name for this control */ |
| 943 | } ipfsetctl_t; |
| 944 | |
| 945 | |
| 946 | /* |
| 947 | * Some of the statistics below are in their own counters, but most are kept |
| 948 | * in this single structure so that they can all easily be collected and |
| 949 | * copied back as required. |
| 950 | */ |
| 951 | typedef struct ipf_statistics { |
| 952 | u_long fr_icmp_coalesce; |
| 953 | u_long fr_tcp_frag; |
| 954 | u_long fr_tcp_pullup; |
| 955 | u_long fr_tcp_short; |
| 956 | u_long fr_tcp_small; |
| 957 | u_long fr_tcp_bad_flags; |
| 958 | u_long fr_udp_pullup; |
| 959 | u_long fr_ip_freed; |
| 960 | u_long fr_v6_ah_bad; |
| 961 | u_long fr_v6_bad; |
| 962 | u_long fr_v6_badfrag; |
| 963 | u_long fr_v6_dst_bad; |
| 964 | u_long fr_v6_esp_pullup; |
| 965 | u_long fr_v6_ext_short; |
| 966 | u_long fr_v6_ext_pullup; |
| 967 | u_long fr_v6_ext_hlen; |
| 968 | u_long fr_v6_frag_bad; |
| 969 | u_long fr_v6_frag_pullup; |
| 970 | u_long fr_v6_frag_size; |
| 971 | u_long fr_v6_gre_pullup; |
| 972 | u_long fr_v6_icmp6_pullup; |
| 973 | u_long fr_v6_rh_bad; |
| 974 | u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */ |
| 975 | u_long fr_v4_ah_bad; |
| 976 | u_long fr_v4_ah_pullup; |
| 977 | u_long fr_v4_esp_pullup; |
| 978 | u_long fr_v4_cipso_bad; |
| 979 | u_long fr_v4_cipso_tlen; |
| 980 | u_long fr_v4_gre_frag; |
| 981 | u_long fr_v4_gre_pullup; |
| 982 | u_long fr_v4_icmp_frag; |
| 983 | u_long fr_v4_icmp_pullup; |
| 984 | u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */ |
| 985 | u_long fr_v4_badsrc; /* source received doesn't match route */ |
| 986 | u_long fr_l4_badcksum; /* layer 4 header checksum failure */ |
| 987 | u_long fr_badcoalesces; |
| 988 | u_long fr_pass; /* packets allowed */ |
| 989 | u_long fr_block; /* packets denied */ |
| 990 | u_long fr_nom; /* packets which don't match any rule */ |
| 991 | u_long fr_short; /* packets which are short */ |
| 992 | u_long fr_ppkl; /* packets allowed and logged */ |
| 993 | u_long fr_bpkl; /* packets denied and logged */ |
| 994 | u_long fr_npkl; /* packets unmatched and logged */ |
| 995 | u_long fr_ret; /* packets for which a return is sent */ |
| 996 | u_long fr_acct; /* packets for which counting was performed */ |
| 997 | u_long fr_bnfr; /* bad attempts to allocate fragment state */ |
| 998 | u_long fr_nfr; /* new fragment state kept */ |
| 999 | u_long fr_cfr; /* add new fragment state but complete pkt */ |
| 1000 | u_long fr_bads; /* bad attempts to allocate packet state */ |
| 1001 | u_long fr_ads; /* new packet state kept */ |
| 1002 | u_long fr_chit; /* cached hit */ |
| 1003 | u_long fr_cmiss; /* cached miss */ |
| 1004 | u_long fr_tcpbad; /* TCP checksum check failures */ |
| 1005 | u_long fr_pull[2]; /* good and bad pullup attempts */ |
| 1006 | u_long fr_bad; /* bad IP packets to the filter */ |
| 1007 | u_long fr_ipv6; /* IPv6 packets in/out */ |
| 1008 | u_long fr_ppshit; /* dropped because of pps ceiling */ |
| 1009 | u_long fr_ipud; /* IP id update failures */ |
| 1010 | u_long fr_blocked[FRB_MAX_VALUE + 1]; |
| 1011 | } ipf_statistics_t; |
| 1012 | |
| 1013 | /* |
| 1014 | * Log structure. Each packet header logged is prepended by one of these. |
| 1015 | * Following this in the log records read from the device will be an ipflog |
| 1016 | * structure which is then followed by any packet data. |
| 1017 | */ |
| 1018 | typedef struct iplog { |
| 1019 | u_32_t ipl_magic; |
| 1020 | u_int ipl_count; |
| 1021 | u_32_t ipl_seqnum; |
| 1022 | struct timeval ipl_time; |
| 1023 | size_t ipl_dsize; |
| 1024 | struct iplog *ipl_next; |
| 1025 | } iplog_t; |
| 1026 | |
| 1027 | #define ipl_sec ipl_time.tv_sec |
| 1028 | #define ipl_usec ipl_time.tv_usec |
| 1029 | |
| 1030 | #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ |
| 1031 | #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ |
| 1032 | #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ |
| 1033 | #define IPLOG_SIZE sizeof(iplog_t) |
| 1034 | |
| 1035 | typedef struct ipflog { |
| 1036 | #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ |
| 1037 | (defined(OpenBSD) && (OpenBSD >= 199603)) |
| 1038 | #else |
| 1039 | u_int fl_unit; |
| 1040 | #endif |
| 1041 | u_32_t fl_rule; |
| 1042 | u_32_t fl_flags; |
| 1043 | u_32_t fl_lflags; |
| 1044 | u_32_t fl_logtag; |
| 1045 | ipftag_t fl_nattag; |
| 1046 | u_short fl_plen; /* extra data after hlen */ |
| 1047 | u_short fl_loglevel; /* syslog log level */ |
| 1048 | char fl_group[FR_GROUPLEN]; |
| 1049 | u_char fl_hlen; /* length of IP headers saved */ |
| 1050 | u_char fl_dir; |
| 1051 | u_char fl_breason; /* from fin_reason */ |
| 1052 | u_char fl_family; /* address family of packet logged */ |
| 1053 | char fl_ifname[LIFNAMSIZ]; |
| 1054 | } ipflog_t; |
| 1055 | |
| 1056 | #ifndef IPF_LOGGING |
| 1057 | # define IPF_LOGGING 0 |
| 1058 | #endif |
| 1059 | #ifndef IPF_DEFAULT_PASS |
| 1060 | # define IPF_DEFAULT_PASS FR_PASS |
| 1061 | #endif |
| 1062 | |
| 1063 | #define DEFAULT_IPFLOGSIZE 32768 |
| 1064 | #ifndef IPFILTER_LOGSIZE |
| 1065 | # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE |
| 1066 | #else |
| 1067 | # if IPFILTER_LOGSIZE < 8192 |
| 1068 | # error IPFILTER_LOGSIZE too small. Must be >= 8192 |
| 1069 | # endif |
| 1070 | #endif |
| 1071 | |
| 1072 | #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ |
| 1073 | |
| 1074 | /* |
| 1075 | * Device filenames for reading log information. Use ipf on Solaris2 because |
| 1076 | * ipl is already a name used by something else. |
| 1077 | */ |
| 1078 | #ifndef IPL_NAME |
| 1079 | # if SOLARIS |
| 1080 | # define IPL_NAME "/dev/ipf" |
| 1081 | # else |
| 1082 | # define IPL_NAME "/dev/ipl" |
| 1083 | # endif |
| 1084 | #endif |
| 1085 | /* |
| 1086 | * Pathnames for various IP Filter control devices. Used by LKM |
| 1087 | * and userland, so defined here. |
| 1088 | */ |
| 1089 | #define IPNAT_NAME "/dev/ipnat" |
| 1090 | #define IPSTATE_NAME "/dev/ipstate" |
| 1091 | #define IPAUTH_NAME "/dev/ipauth" |
| 1092 | #define IPSYNC_NAME "/dev/ipsync" |
| 1093 | #define IPSCAN_NAME "/dev/ipscan" |
| 1094 | #define IPLOOKUP_NAME "/dev/iplookup" |
| 1095 | |
| 1096 | #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ |
| 1097 | #define IPL_LOGNAT 1 |
| 1098 | #define IPL_LOGSTATE 2 |
| 1099 | #define IPL_LOGAUTH 3 |
| 1100 | #define IPL_LOGSYNC 4 |
| 1101 | #define IPL_LOGSCAN 5 |
| 1102 | #define IPL_LOGLOOKUP 6 |
| 1103 | #define IPL_LOGCOUNT 7 |
| 1104 | #define IPL_LOGMAX 7 |
| 1105 | #define IPL_LOGSIZE IPL_LOGMAX + 1 |
| 1106 | #define IPL_LOGALL -1 |
| 1107 | #define IPL_LOGNONE -2 |
| 1108 | |
| 1109 | /* |
| 1110 | * For SIOCGETFS |
| 1111 | */ |
| 1112 | typedef struct friostat { |
| 1113 | ipf_statistics_t f_st[2]; |
| 1114 | frentry_t *f_ipf[2][2]; |
| 1115 | frentry_t *f_acct[2][2]; |
| 1116 | frentry_t *f_auth; |
| 1117 | struct frgroup *f_groups[IPL_LOGSIZE][2]; |
| 1118 | u_long f_froute[2]; |
| 1119 | u_long f_log_ok; |
| 1120 | u_long f_log_fail; |
| 1121 | u_long f_rb_no_mem; |
| 1122 | u_long f_rb_node_max; |
| 1123 | u_32_t f_ticks; |
| 1124 | int f_locks[IPL_LOGSIZE]; |
| 1125 | int f_defpass; /* default pass - from fr_pass */ |
| 1126 | int f_active; /* 1 or 0 - active rule set */ |
| 1127 | int f_running; /* 1 if running, else 0 */ |
| 1128 | int f_logging; /* 1 if enabled, else 0 */ |
| 1129 | int f_features; |
| 1130 | char f_version[32]; /* version string */ |
| 1131 | } friostat_t; |
| 1132 | |
| 1133 | #define f_fin f_ipf[0] |
| 1134 | #define f_fout f_ipf[1] |
| 1135 | #define f_acctin f_acct[0] |
| 1136 | #define f_acctout f_acct[1] |
| 1137 | |
| 1138 | #define IPF_FEAT_LKM 0x001 |
| 1139 | #define IPF_FEAT_LOG 0x002 |
| 1140 | #define IPF_FEAT_LOOKUP 0x004 |
| 1141 | #define IPF_FEAT_BPF 0x008 |
| 1142 | #define IPF_FEAT_COMPILED 0x010 |
| 1143 | #define IPF_FEAT_CKSUM 0x020 |
| 1144 | #define IPF_FEAT_SYNC 0x040 |
| 1145 | #define IPF_FEAT_SCAN 0x080 |
| 1146 | #define IPF_FEAT_IPV6 0x100 |
| 1147 | |
| 1148 | typedef struct optlist { |
| 1149 | u_short ol_val; |
| 1150 | int ol_bit; |
| 1151 | } optlist_t; |
| 1152 | |
| 1153 | |
| 1154 | /* |
| 1155 | * Group list structure. |
| 1156 | */ |
| 1157 | typedef struct frgroup { |
| 1158 | struct frgroup *fg_next; |
| 1159 | struct frentry *fg_head; |
| 1160 | struct frentry *fg_start; |
| 1161 | struct frgroup **fg_set; |
| 1162 | u_32_t fg_flags; |
| 1163 | int fg_ref; |
| 1164 | char fg_name[FR_GROUPLEN]; |
| 1165 | } frgroup_t; |
| 1166 | |
| 1167 | #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) |
| 1168 | |
| 1169 | |
| 1170 | /* |
| 1171 | * Used by state and NAT tables |
| 1172 | */ |
| 1173 | typedef struct icmpinfo { |
| 1174 | u_short ici_id; |
| 1175 | u_short ici_seq; |
| 1176 | u_char ici_type; |
| 1177 | } icmpinfo_t; |
| 1178 | |
| 1179 | typedef struct udpinfo { |
| 1180 | u_short us_sport; |
| 1181 | u_short us_dport; |
| 1182 | } udpinfo_t; |
| 1183 | |
| 1184 | |
| 1185 | typedef struct tcpdata { |
| 1186 | u_32_t td_end; |
| 1187 | u_32_t td_maxend; |
| 1188 | u_32_t td_maxwin; |
| 1189 | u_32_t td_winscale; |
| 1190 | u_32_t td_maxseg; |
| 1191 | int td_winflags; |
| 1192 | } tcpdata_t; |
| 1193 | |
| 1194 | #define TCP_WSCALE_MAX 14 |
| 1195 | |
| 1196 | #define TCP_WSCALE_SEEN 0x00000001 |
| 1197 | #define TCP_WSCALE_FIRST 0x00000002 |
| 1198 | #define TCP_SACK_PERMIT 0x00000004 |
| 1199 | |
| 1200 | |
| 1201 | typedef struct tcpinfo { |
| 1202 | u_32_t ts_sport; |
| 1203 | u_32_t ts_dport; |
| 1204 | tcpdata_t ts_data[2]; |
| 1205 | } tcpinfo_t; |
| 1206 | |
| 1207 | |
| 1208 | /* |
| 1209 | * Structures to define a GRE header as seen in a packet. |
| 1210 | */ |
| 1211 | struct grebits { |
| 1212 | #if defined(sparc) |
| 1213 | u_32_t grb_ver:3; |
| 1214 | u_32_t grb_flags:3; |
| 1215 | u_32_t grb_A:1; |
| 1216 | u_32_t grb_recur:1; |
| 1217 | u_32_t grb_s:1; |
| 1218 | u_32_t grb_S:1; |
| 1219 | u_32_t grb_K:1; |
| 1220 | u_32_t grb_R:1; |
| 1221 | u_32_t grb_C:1; |
| 1222 | #else |
| 1223 | u_32_t grb_C:1; |
| 1224 | u_32_t grb_R:1; |
| 1225 | u_32_t grb_K:1; |
| 1226 | u_32_t grb_S:1; |
| 1227 | u_32_t grb_s:1; |
| 1228 | u_32_t grb_recur:1; |
| 1229 | u_32_t grb_A:1; |
| 1230 | u_32_t grb_flags:3; |
| 1231 | u_32_t grb_ver:3; |
| 1232 | #endif |
| 1233 | u_short grb_ptype; |
| 1234 | }; |
| 1235 | |
| 1236 | typedef struct grehdr { |
| 1237 | union { |
| 1238 | struct grebits gru_bits; |
| 1239 | u_short gru_flags; |
| 1240 | } gr_un; |
| 1241 | u_short gr_len; |
| 1242 | u_short gr_call; |
| 1243 | } grehdr_t; |
| 1244 | |
| 1245 | #define gr_flags gr_un.gru_flags |
| 1246 | #define gr_bits gr_un.gru_bits |
| 1247 | #define gr_ptype gr_bits.grb_ptype |
| 1248 | #define gr_C gr_bits.grb_C |
| 1249 | #define gr_R gr_bits.grb_R |
| 1250 | #define gr_K gr_bits.grb_K |
| 1251 | #define gr_S gr_bits.grb_S |
| 1252 | #define gr_s gr_bits.grb_s |
| 1253 | #define gr_recur gr_bits.grb_recur |
| 1254 | #define gr_A gr_bits.grb_A |
| 1255 | #define gr_ver gr_bits.grb_ver |
| 1256 | |
| 1257 | /* |
| 1258 | * GRE information tracked by "keep state" |
| 1259 | */ |
| 1260 | typedef struct greinfo { |
| 1261 | u_short gs_call[2]; |
| 1262 | u_short gs_flags; |
| 1263 | u_short gs_ptype; |
| 1264 | } greinfo_t; |
| 1265 | |
| 1266 | #define GRE_REV(x) ((ntohs(x) >> 13) & 7) |
| 1267 | |
| 1268 | |
| 1269 | /* |
| 1270 | * Format of an Authentication header |
| 1271 | */ |
| 1272 | typedef struct authhdr { |
| 1273 | u_char ah_next; |
| 1274 | u_char ah_plen; |
| 1275 | u_short ah_reserved; |
| 1276 | u_32_t ah_spi; |
| 1277 | u_32_t ah_seq; |
| 1278 | /* Following the sequence number field is 0 or more bytes of */ |
| 1279 | /* authentication data, as specified by ah_plen - RFC 2402. */ |
| 1280 | } authhdr_t; |
| 1281 | |
| 1282 | |
| 1283 | /* |
| 1284 | * Timeout tail queue list member |
| 1285 | */ |
| 1286 | typedef struct ipftqent { |
| 1287 | struct ipftqent **tqe_pnext; |
| 1288 | struct ipftqent *tqe_next; |
| 1289 | struct ipftq *tqe_ifq; |
| 1290 | void *tqe_parent; /* pointer back to NAT/state struct */ |
| 1291 | u_32_t tqe_die; /* when this entriy is to die */ |
| 1292 | u_32_t tqe_touched; |
| 1293 | int tqe_flags; |
| 1294 | int tqe_state[2]; /* current state of this entry */ |
| 1295 | } ipftqent_t; |
| 1296 | |
| 1297 | #define TQE_RULEBASED 0x00000001 |
| 1298 | #define TQE_DELETE 0x00000002 |
| 1299 | |
| 1300 | |
| 1301 | /* |
| 1302 | * Timeout tail queue head for IPFilter |
| 1303 | */ |
| 1304 | typedef struct ipftq { |
| 1305 | ipfmutex_t ifq_lock; |
| 1306 | u_int ifq_ttl; |
| 1307 | ipftqent_t *ifq_head; |
| 1308 | ipftqent_t **ifq_tail; |
| 1309 | struct ipftq *ifq_next; |
| 1310 | struct ipftq **ifq_pnext; |
| 1311 | int ifq_ref; |
| 1312 | u_int ifq_flags; |
| 1313 | } ipftq_t; |
| 1314 | |
| 1315 | #define IFQF_USER 0x01 /* User defined aging */ |
| 1316 | #define IFQF_DELETE 0x02 /* Marked for deletion */ |
| 1317 | #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ |
| 1318 | |
| 1319 | #define IPFTQ_INIT(x,y,z) do { \ |
| 1320 | (x)->ifq_ttl = (y); \ |
| 1321 | (x)->ifq_head = NULL; \ |
| 1322 | (x)->ifq_ref = 1; \ |
| 1323 | (x)->ifq_tail = &(x)->ifq_head; \ |
| 1324 | MUTEX_INIT(&(x)->ifq_lock, (z)); \ |
| 1325 | } while (0) |
| 1326 | |
| 1327 | #define IPF_HZ_MULT 1 |
| 1328 | #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ |
| 1329 | /* checks its timeout queues. */ |
| 1330 | #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) |
| 1331 | |
| 1332 | typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *); |
| 1333 | |
| 1334 | |
| 1335 | /* |
| 1336 | * Object structure description. For passing through in ioctls. |
| 1337 | */ |
| 1338 | typedef struct ipfobj { |
| 1339 | u_32_t ipfo_rev; /* IPFilter version number */ |
| 1340 | u_32_t ipfo_size; /* size of object at ipfo_ptr */ |
| 1341 | void *ipfo_ptr; /* pointer to object */ |
| 1342 | int ipfo_type; /* type of object being pointed to */ |
| 1343 | int ipfo_offset; /* bytes from ipfo_ptr where to start */ |
| 1344 | int ipfo_retval; /* return value */ |
| 1345 | u_char ipfo_xxxpad[28]; /* reserved for future use */ |
| 1346 | } ipfobj_t; |
| 1347 | |
| 1348 | #define IPFOBJ_FRENTRY 0 /* struct frentry */ |
| 1349 | #define IPFOBJ_IPFSTAT 1 /* struct friostat */ |
| 1350 | #define IPFOBJ_IPFINFO 2 /* struct fr_info */ |
| 1351 | #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ |
| 1352 | #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ |
| 1353 | #define IPFOBJ_IPNAT 5 /* struct ipnat */ |
| 1354 | #define IPFOBJ_NATSTAT 6 /* struct natstat */ |
| 1355 | #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ |
| 1356 | #define IPFOBJ_NATSAVE 8 /* struct nat_save */ |
| 1357 | #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ |
| 1358 | #define IPFOBJ_IPSTATE 10 /* struct ipstate */ |
| 1359 | #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ |
| 1360 | #define IPFOBJ_FRAUTH 12 /* struct frauth */ |
| 1361 | #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ |
| 1362 | #define IPFOBJ_NAT 14 /* struct nat */ |
| 1363 | #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ |
| 1364 | #define IPFOBJ_GENITER 16 /* struct ipfgeniter */ |
| 1365 | #define IPFOBJ_GTABLE 17 /* struct ipftable */ |
| 1366 | #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ |
| 1367 | #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */ |
| 1368 | #define IPFOBJ_IPFEXPR 20 |
| 1369 | #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */ |
| 1370 | #define IPFOBJ_FRIPF 22 /* structfripf */ |
| 1371 | #define IPFOBJ_COUNT 23 /* How many #defines are above this? */ |
| 1372 | |
| 1373 | |
| 1374 | typedef union ipftunevalptr { |
| 1375 | void *ipftp_void; |
| 1376 | u_long *ipftp_long; |
| 1377 | u_int *ipftp_int; |
| 1378 | u_short *ipftp_short; |
| 1379 | u_char *ipftp_char; |
| 1380 | u_long ipftp_offset; |
| 1381 | } ipftunevalptr_t; |
| 1382 | |
| 1383 | typedef union ipftuneval { |
| 1384 | u_long ipftu_long; |
| 1385 | u_int ipftu_int; |
| 1386 | u_short ipftu_short; |
| 1387 | u_char ipftu_char; |
| 1388 | } ipftuneval_t; |
| 1389 | |
| 1390 | struct ipftuneable; |
| 1391 | typedef int (* ipftunefunc_t)(struct ipf_main_softc_s *, struct ipftuneable *, |
| 1392 | ipftuneval_t *); |
| 1393 | |
| 1394 | typedef struct ipftuneable { |
| 1395 | ipftunevalptr_t ipft_una; |
| 1396 | const char *ipft_name; |
| 1397 | u_long ipft_min; |
| 1398 | u_long ipft_max; |
| 1399 | int ipft_sz; |
| 1400 | int ipft_flags; |
| 1401 | struct ipftuneable *ipft_next; |
| 1402 | ipftunefunc_t ipft_func; |
| 1403 | } ipftuneable_t; |
| 1404 | |
| 1405 | #define ipft_addr ipft_una.ipftp_void |
| 1406 | #define ipft_plong ipft_una.ipftp_long |
| 1407 | #define ipft_pint ipft_una.ipftp_int |
| 1408 | #define ipft_pshort ipft_una.ipftp_short |
| 1409 | #define ipft_pchar ipft_una.ipftp_char |
| 1410 | |
| 1411 | #define IPFT_RDONLY 1 /* read-only */ |
| 1412 | #define IPFT_WRDISABLED 2 /* write when disabled only */ |
| 1413 | |
| 1414 | typedef struct ipftune { |
| 1415 | void *ipft_cookie; |
| 1416 | ipftuneval_t ipft_un; |
| 1417 | u_long ipft_min; |
| 1418 | u_long ipft_max; |
| 1419 | int ipft_sz; |
| 1420 | int ipft_flags; |
| 1421 | char ipft_name[80]; |
| 1422 | } ipftune_t; |
| 1423 | |
| 1424 | #define ipft_vlong ipft_un.ipftu_long |
| 1425 | #define ipft_vint ipft_un.ipftu_int |
| 1426 | #define ipft_vshort ipft_un.ipftu_short |
| 1427 | #define ipft_vchar ipft_un.ipftu_char |
| 1428 | |
| 1429 | /* |
| 1430 | * Hash table header |
| 1431 | */ |
| 1432 | #define IPFHASH(x,y) typedef struct { \ |
| 1433 | ipfrwlock_t ipfh_lock; \ |
| 1434 | struct x *ipfh_head; \ |
| 1435 | } y |
| 1436 | |
| 1437 | /* |
| 1438 | ** HPUX Port |
| 1439 | */ |
| 1440 | #ifdef __hpux |
| 1441 | /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ |
| 1442 | # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ |
| 1443 | #endif |
| 1444 | |
| 1445 | #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ |
| 1446 | (__FreeBSD_version >= 220000) |
| 1447 | # define CDEV_MAJOR 79 |
| 1448 | #endif |
| 1449 | |
| 1450 | /* |
| 1451 | * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns |
| 1452 | * on those hooks. We don't need any special mods in non-IP Filter code |
| 1453 | * with this! |
| 1454 | */ |
| 1455 | #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ |
| 1456 | (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ |
| 1457 | (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) |
| 1458 | # if (NetBSD >= 199905) && !defined(PFIL_HOOKS) |
| 1459 | # define PFIL_HOOKS |
| 1460 | # endif |
| 1461 | # ifdef PFIL_HOOKS |
| 1462 | # define NETBSD_PF |
| 1463 | # endif |
| 1464 | #endif |
| 1465 | |
| 1466 | #ifdef _KERNEL |
| 1467 | # define FR_VERBOSE(verb_pr) |
| 1468 | # define FR_DEBUG(verb_pr) |
| 1469 | #else |
| 1470 | extern void ipfkdebug(char *, ...); |
| 1471 | extern void ipfkverbose(char *, ...); |
| 1472 | # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr |
| 1473 | # define FR_DEBUG(verb_pr) ipfkdebug verb_pr |
| 1474 | #endif |
| 1475 | |
| 1476 | /* |
| 1477 | * |
| 1478 | */ |
| 1479 | typedef struct ipfruleiter { |
| 1480 | int iri_inout; |
| 1481 | char iri_group[FR_GROUPLEN]; |
| 1482 | int iri_active; |
| 1483 | int iri_nrules; |
| 1484 | int iri_v; /* No longer used (compatibility) */ |
| 1485 | frentry_t *iri_rule; |
| 1486 | } ipfruleiter_t; |
| 1487 | |
| 1488 | /* |
| 1489 | * Values for iri_inout |
| 1490 | */ |
| 1491 | #define F_IN 0 |
| 1492 | #define F_OUT 1 |
| 1493 | #define F_ACIN 2 |
| 1494 | #define F_ACOUT 3 |
| 1495 | |
| 1496 | |
| 1497 | typedef struct ipfgeniter { |
| 1498 | int igi_type; |
| 1499 | int igi_nitems; |
| 1500 | void *igi_data; |
| 1501 | } ipfgeniter_t; |
| 1502 | |
| 1503 | #define IPFGENITER_IPF 0 |
| 1504 | #define IPFGENITER_NAT 1 |
| 1505 | #define IPFGENITER_IPNAT 2 |
| 1506 | #define IPFGENITER_FRAG 3 |
| 1507 | #define IPFGENITER_AUTH 4 |
| 1508 | #define IPFGENITER_STATE 5 |
| 1509 | #define IPFGENITER_NATFRAG 6 |
| 1510 | #define IPFGENITER_HOSTMAP 7 |
| 1511 | #define IPFGENITER_LOOKUP 8 |
| 1512 | |
| 1513 | typedef struct ipftable { |
| 1514 | int ita_type; |
| 1515 | void *ita_table; |
| 1516 | } ipftable_t; |
| 1517 | |
| 1518 | #define IPFTABLE_BUCKETS 1 |
| 1519 | #define IPFTABLE_BUCKETS_NATIN 2 |
| 1520 | #define IPFTABLE_BUCKETS_NATOUT 3 |
| 1521 | |
| 1522 | |
| 1523 | typedef struct ipf_v4_masktab_s { |
| 1524 | u_32_t imt4_active[33]; |
| 1525 | int imt4_masks[33]; |
| 1526 | int imt4_max; |
| 1527 | } ipf_v4_masktab_t; |
| 1528 | |
| 1529 | typedef struct ipf_v6_masktab_s { |
| 1530 | i6addr_t imt6_active[129]; |
| 1531 | int imt6_masks[129]; |
| 1532 | int imt6_max; |
| 1533 | } ipf_v6_masktab_t; |
| 1534 | |
| 1535 | |
| 1536 | /* |
| 1537 | * |
| 1538 | */ |
| 1539 | typedef struct ipftoken { |
| 1540 | struct ipftoken *ipt_next; |
| 1541 | struct ipftoken **ipt_pnext; |
| 1542 | void *ipt_ctx; |
| 1543 | void *ipt_data; |
| 1544 | u_long ipt_die; |
| 1545 | int ipt_type; |
| 1546 | int ipt_uid; |
| 1547 | int ipt_subtype; |
| 1548 | int ipt_ref; |
| 1549 | int ipt_complete; |
| 1550 | } ipftoken_t; |
| 1551 | |
| 1552 | |
| 1553 | /* |
| 1554 | * |
| 1555 | */ |
| 1556 | typedef struct ipfexp { |
| 1557 | int ipfe_cmd; |
| 1558 | int ipfe_not; |
| 1559 | int ipfe_narg; |
| 1560 | int ipfe_size; |
| 1561 | int ipfe_arg0[1]; |
| 1562 | } ipfexp_t; |
| 1563 | |
| 1564 | /* |
| 1565 | * Currently support commands (ipfe_cmd) |
| 1566 | * 32bits is split up follows: |
| 1567 | * aabbcccc |
| 1568 | * aa = 0 = packet matching, 1 = meta data matching |
| 1569 | * bb = IP protocol number |
| 1570 | * cccc = command |
| 1571 | */ |
| 1572 | #define IPF_EXP_IP_PR 0x00000001 |
| 1573 | #define IPF_EXP_IP_ADDR 0x00000002 |
| 1574 | #define IPF_EXP_IP_SRCADDR 0x00000003 |
| 1575 | #define IPF_EXP_IP_DSTADDR 0x00000004 |
| 1576 | #define IPF_EXP_IP6_ADDR 0x00000005 |
| 1577 | #define IPF_EXP_IP6_SRCADDR 0x00000006 |
| 1578 | #define IPF_EXP_IP6_DSTADDR 0x00000007 |
| 1579 | #define IPF_EXP_TCP_FLAGS 0x00060001 |
| 1580 | #define IPF_EXP_TCP_PORT 0x00060002 |
| 1581 | #define IPF_EXP_TCP_SPORT 0x00060003 |
| 1582 | #define IPF_EXP_TCP_DPORT 0x00060004 |
| 1583 | #define IPF_EXP_UDP_PORT 0x00110002 |
| 1584 | #define IPF_EXP_UDP_SPORT 0x00110003 |
| 1585 | #define IPF_EXP_UDP_DPORT 0x00110004 |
| 1586 | #define IPF_EXP_IDLE_GT 0x01000001 |
| 1587 | #define IPF_EXP_TCP_STATE 0x01060002 |
| 1588 | #define IPF_EXP_END 0xffffffff |
| 1589 | |
| 1590 | #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */ |
| 1591 | #define FIVE_DAYS (5 * ONE_DAY) |
| 1592 | |
| 1593 | typedef struct ipf_main_softc_s { |
| 1594 | struct ipf_main_softc_s *ipf_next; |
| 1595 | ipfmutex_t ipf_rw; |
| 1596 | ipfmutex_t ipf_timeoutlock; |
| 1597 | ipfrwlock_t ipf_mutex; |
| 1598 | ipfrwlock_t ipf_frag; |
| 1599 | ipfrwlock_t ipf_global; |
| 1600 | ipfrwlock_t ipf_tokens; |
| 1601 | ipfrwlock_t ipf_state; |
| 1602 | ipfrwlock_t ipf_nat; |
| 1603 | ipfrwlock_t ipf_natfrag; |
| 1604 | ipfrwlock_t ipf_poolrw; |
| 1605 | int ipf_dynamic_softc; |
| 1606 | int ipf_refcnt; |
| 1607 | int ipf_running; |
| 1608 | int ipf_flags; |
| 1609 | int ipf_active; |
| 1610 | int ipf_control_forwarding; |
| 1611 | int ipf_update_ipid; |
| 1612 | int ipf_chksrc; /* causes a system crash if enabled */ |
| 1613 | int ipf_pass; |
| 1614 | int ipf_minttl; |
| 1615 | int ipf_icmpminfragmtu; |
| 1616 | int ipf_interror; /* Should be in a struct that is per */ |
| 1617 | /* thread or process. Does not belong */ |
| 1618 | /* here but there's a lot more work */ |
| 1619 | /* in doing that properly. For now, */ |
| 1620 | /* it is squatting. */ |
| 1621 | u_int ipf_tcpidletimeout; |
| 1622 | u_int ipf_tcpclosewait; |
| 1623 | u_int ipf_tcplastack; |
| 1624 | u_int ipf_tcptimewait; |
| 1625 | u_int ipf_tcptimeout; |
| 1626 | u_int ipf_tcpsynsent; |
| 1627 | u_int ipf_tcpsynrecv; |
| 1628 | u_int ipf_tcpclosed; |
| 1629 | u_int ipf_tcphalfclosed; |
| 1630 | u_int ipf_udptimeout; |
| 1631 | u_int ipf_udpacktimeout; |
| 1632 | u_int ipf_icmptimeout; |
| 1633 | u_int ipf_icmpacktimeout; |
| 1634 | u_int ipf_iptimeout; |
| 1635 | u_long ipf_ticks; |
| 1636 | u_long ipf_userifqs; |
| 1637 | u_long ipf_rb_no_mem; |
| 1638 | u_long ipf_rb_node_max; |
| 1639 | u_long ipf_frouteok[2]; |
| 1640 | ipftuneable_t *ipf_tuners; |
| 1641 | void *ipf_frag_soft; |
| 1642 | void *ipf_nat_soft; |
| 1643 | void *ipf_state_soft; |
| 1644 | void *ipf_auth_soft; |
| 1645 | void *ipf_proxy_soft; |
| 1646 | void *ipf_sync_soft; |
| 1647 | void *ipf_lookup_soft; |
| 1648 | void *ipf_log_soft; |
| 1649 | struct frgroup *ipf_groups[IPL_LOGSIZE][2]; |
| 1650 | frentry_t *ipf_rules[2][2]; |
| 1651 | frentry_t *ipf_acct[2][2]; |
| 1652 | frentry_t *ipf_rule_explist[2]; |
| 1653 | ipftoken_t *ipf_token_head; |
| 1654 | ipftoken_t **ipf_token_tail; |
| 1655 | #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \ |
| 1656 | defined(_KERNEL) |
| 1657 | struct callout_handle ipf_slow_ch; |
| 1658 | #endif |
| 1659 | #if defined(linux) && defined(_KERNEL) |
| 1660 | struct timer_list ipf_timer; |
| 1661 | #endif |
| 1662 | #if NETBSD_GE_REV(104040000) |
| 1663 | struct callout ipf_slow_ch; |
| 1664 | #endif |
| 1665 | #if SOLARIS |
| 1666 | # if SOLARIS2 >= 7 |
| 1667 | timeout_id_t ipf_slow_ch; |
| 1668 | # else |
| 1669 | int ipf_slow_ch; |
| 1670 | # endif |
| 1671 | #endif |
| 1672 | #if defined(_KERNEL) |
| 1673 | # if SOLARIS |
| 1674 | struct pollhead ipf_poll_head[IPL_LOGSIZE]; |
| 1675 | void *ipf_dip; |
| 1676 | # if defined(INSTANCES) |
| 1677 | int ipf_get_loopback; |
| 1678 | u_long ipf_idnum; |
| 1679 | net_handle_t ipf_nd_v4; |
| 1680 | net_handle_t ipf_nd_v6; |
| 1681 | hook_t *ipf_hk_v4_in; |
| 1682 | hook_t *ipf_hk_v4_out; |
| 1683 | hook_t *ipf_hk_v4_nic; |
| 1684 | hook_t *ipf_hk_v6_in; |
| 1685 | hook_t *ipf_hk_v6_out; |
| 1686 | hook_t *ipf_hk_v6_nic; |
| 1687 | hook_t *ipf_hk_loop_v4_in; |
| 1688 | hook_t *ipf_hk_loop_v4_out; |
| 1689 | hook_t *ipf_hk_loop_v6_in; |
| 1690 | hook_t *ipf_hk_loop_v6_out; |
| 1691 | # endif |
| 1692 | # else |
| 1693 | # if defined(linux) && defined(_KERNEL) |
| 1694 | struct poll_table_struct ipf_selwait[IPL_LOGSIZE]; |
| 1695 | wait_queue_head_t iplh_linux[IPL_LOGSIZE]; |
| 1696 | # else |
| 1697 | struct selinfo ipf_selwait[IPL_LOGSIZE]; |
| 1698 | # endif |
| 1699 | # endif |
| 1700 | #endif |
| 1701 | void *ipf_slow; |
| 1702 | ipf_statistics_t ipf_stats[2]; |
| 1703 | u_char ipf_iss_secret[32]; |
| 1704 | u_short ipf_ip_id; |
| 1705 | } ipf_main_softc_t; |
| 1706 | |
| 1707 | #define IPFERROR(_e) do { softc->ipf_interror = (_e); \ |
| 1708 | DT1(user_error, int, _e); \ |
| 1709 | } while (0) |
| 1710 | |
| 1711 | #ifndef _KERNEL |
| 1712 | extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); |
| 1713 | extern int (*ipf_checkp)(ip_t *, int, void *, int, mb_t **); |
| 1714 | extern struct ifnet *get_unit(char *, int); |
| 1715 | extern char *get_ifname(struct ifnet *); |
| 1716 | extern int ipfioctl(ipf_main_softc_t *, int, ioctlcmd_t, |
| 1717 | void *, int); |
| 1718 | extern void m_freem(mb_t *); |
| 1719 | extern size_t msgdsize(mb_t *); |
| 1720 | extern int bcopywrap(void *, void *, size_t); |
| 1721 | #else /* #ifndef _KERNEL */ |
| 1722 | # if defined(__NetBSD__) && defined(PFIL_HOOKS) |
| 1723 | extern void ipfilterattach(int); |
| 1724 | # endif |
| 1725 | extern int ipl_enable(void); |
| 1726 | extern int ipl_disable(void); |
| 1727 | # ifdef MENTAT |
| 1728 | extern int ipf_check(void *, struct ip *, int, void *, int, void *, |
| 1729 | mblk_t **); |
| 1730 | # if SOLARIS |
| 1731 | extern void ipf_prependmbt(fr_info_t *, mblk_t *); |
| 1732 | # if SOLARIS2 >= 7 |
| 1733 | extern int ipfioctl(dev_t, int, intptr_t, int, cred_t *, int *); |
| 1734 | # else |
| 1735 | extern int ipfioctl(dev_t, int, int *, int, cred_t *, int *); |
| 1736 | # endif |
| 1737 | # endif |
| 1738 | # ifdef __hpux |
| 1739 | extern int ipfioctl(dev_t, int, caddr_t, int); |
| 1740 | extern int ipf_select(dev_t, int); |
| 1741 | # endif |
| 1742 | extern int ipf_qout(queue_t *, mblk_t *); |
| 1743 | # else /* MENTAT */ |
| 1744 | extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); |
| 1745 | extern int (*fr_checkp)(ip_t *, int, void *, int, mb_t **); |
| 1746 | extern size_t mbufchainlen(mb_t *); |
| 1747 | # ifdef __sgi |
| 1748 | # include <sys/cred.h> |
| 1749 | extern int ipfioctl(dev_t, int, caddr_t, int, cred_t *, int *); |
| 1750 | extern int ipfilter_sgi_attach(void); |
| 1751 | extern void ipfilter_sgi_detach(void); |
| 1752 | extern void ipfilter_sgi_intfsync(void); |
| 1753 | # else |
| 1754 | # ifdef IPFILTER_LKM |
| 1755 | extern int ipf_identify(char *); |
| 1756 | # endif |
| 1757 | # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \ |
| 1758 | (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__) |
| 1759 | # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \ |
| 1760 | defined(__OpenBSD__) || FREEBSD_GE_REV(300000) |
| 1761 | # if (__FreeBSD_version >= 500024) |
| 1762 | # if (__FreeBSD_version >= 502116) |
| 1763 | extern int ipfioctl(struct cdev*, u_long, caddr_t, int, struct thread *); |
| 1764 | # else |
| 1765 | extern int ipfioctl(dev_t, u_long, caddr_t, int, struct thread *); |
| 1766 | # endif /* __FreeBSD_version >= 502116 */ |
| 1767 | # else |
| 1768 | # if NETBSD_GE_REV(499001000) |
| 1769 | extern int ipfioctl(dev_t, u_long, void *, int, struct lwp *); |
| 1770 | # else |
| 1771 | # if NETBSD_GE_REV(399001400) |
| 1772 | extern int ipfioctl(dev_t, u_long, caddr_t, int, struct lwp *); |
| 1773 | # else |
| 1774 | extern int ipfioctl(dev_t, u_long, caddr_t, int, struct proc *); |
| 1775 | # endif |
| 1776 | # endif |
| 1777 | # endif /* __FreeBSD_version >= 500024 */ |
| 1778 | # else |
| 1779 | extern int ipfioctl(dev_t, int, caddr_t, int, struct proc *); |
| 1780 | # endif |
| 1781 | # else |
| 1782 | # ifdef linux |
| 1783 | extern int ipfioctl(struct inode *, struct file *, u_int, u_long); |
| 1784 | # else |
| 1785 | extern int ipfioctl(dev_t, int, caddr_t, int); |
| 1786 | # endif |
| 1787 | # endif /* (_BSDI_VERSION >= 199510) */ |
| 1788 | # endif /* __ sgi */ |
| 1789 | # endif /* MENTAT */ |
| 1790 | |
| 1791 | # if defined(__FreeBSD_version) |
| 1792 | extern int ipf_pfil_hook(void); |
| 1793 | extern int ipf_pfil_unhook(void); |
| 1794 | extern void ipf_event_reg(void); |
| 1795 | extern void ipf_event_dereg(void); |
| 1796 | # endif |
| 1797 | |
| 1798 | # if defined(INSTANCES) |
| 1799 | extern ipf_main_softc_t *ipf_find_softc(u_long); |
| 1800 | extern int ipf_set_loopback(ipf_main_softc_t *, ipftuneable_t *, |
| 1801 | ipftuneval_t *); |
| 1802 | # endif |
| 1803 | |
| 1804 | #endif /* #ifndef _KERNEL */ |
| 1805 | |
| 1806 | extern char *memstr(const char *, char *, size_t, size_t); |
| 1807 | extern int count4bits(u_32_t); |
| 1808 | #ifdef USE_INET6 |
| 1809 | extern int count6bits(u_32_t *); |
| 1810 | #endif |
| 1811 | extern int frrequest(ipf_main_softc_t *, int, ioctlcmd_t, void *, |
| 1812 | int, int); |
| 1813 | extern char *getifname(struct ifnet *); |
| 1814 | extern int ipfattach(ipf_main_softc_t *); |
| 1815 | extern int ipfdetach(ipf_main_softc_t *); |
| 1816 | extern u_short ipf_cksum(u_short *, int); |
| 1817 | extern int copyinptr(ipf_main_softc_t *, void *, void *, size_t); |
| 1818 | extern int copyoutptr(ipf_main_softc_t *, void *, void *, size_t); |
| 1819 | extern int ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *); |
| 1820 | extern int ipf_inject(fr_info_t *, mb_t *); |
| 1821 | extern int ipf_inobj(ipf_main_softc_t *, void *, ipfobj_t *, |
| 1822 | void *, int); |
| 1823 | extern int ipf_inobjsz(ipf_main_softc_t *, void *, void *, |
| 1824 | int , int); |
| 1825 | extern int ipf_ioctlswitch(ipf_main_softc_t *, int, void *, |
| 1826 | ioctlcmd_t, int, int, void *); |
| 1827 | extern int ipf_ipf_ioctl(ipf_main_softc_t *, void *, ioctlcmd_t, |
| 1828 | int, int, void *); |
| 1829 | extern int ipf_ipftune(ipf_main_softc_t *, ioctlcmd_t, void *); |
| 1830 | extern int ipf_matcharray_load(ipf_main_softc_t *, void *, |
| 1831 | ipfobj_t *, int **); |
| 1832 | extern int ipf_matcharray_verify(int *, int); |
| 1833 | extern int ipf_outobj(ipf_main_softc_t *, void *, void *, int); |
| 1834 | extern int ipf_outobjk(ipf_main_softc_t *, ipfobj_t *, void *); |
| 1835 | extern int ipf_outobjsz(ipf_main_softc_t *, void *, void *, |
| 1836 | int, int); |
| 1837 | extern void *ipf_pullup(mb_t *, fr_info_t *, int); |
| 1838 | extern int ipf_resolvedest(ipf_main_softc_t *, char *, |
| 1839 | struct frdest *, int); |
| 1840 | extern int ipf_resolvefunc(ipf_main_softc_t *, void *); |
| 1841 | extern void *ipf_resolvenic(ipf_main_softc_t *, char *, int); |
| 1842 | extern int ipf_send_icmp_err(int, fr_info_t *, int); |
| 1843 | extern int ipf_send_reset(fr_info_t *); |
| 1844 | #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \ |
| 1845 | !defined(_KERNEL) || defined(linux) |
| 1846 | extern int ppsratecheck(struct timeval *, int *, int); |
| 1847 | #endif |
| 1848 | extern void ipf_apply_timeout(ipftq_t *, u_int); |
| 1849 | extern ipftq_t *ipf_addtimeoutqueue(ipf_main_softc_t *, ipftq_t **, |
| 1850 | u_int); |
| 1851 | extern void ipf_deletequeueentry(ipftqent_t *); |
| 1852 | extern int ipf_deletetimeoutqueue(ipftq_t *); |
| 1853 | extern void ipf_freetimeoutqueue(ipf_main_softc_t *, ipftq_t *); |
| 1854 | extern void ipf_movequeue(u_long, ipftqent_t *, ipftq_t *, |
| 1855 | ipftq_t *); |
| 1856 | extern void ipf_queueappend(u_long, ipftqent_t *, ipftq_t *, void *); |
| 1857 | extern void ipf_queueback(u_long, ipftqent_t *); |
| 1858 | extern int ipf_queueflush(ipf_main_softc_t *, ipftq_delete_fn_t, |
| 1859 | ipftq_t *, ipftq_t *, u_int *, int, int); |
| 1860 | extern void ipf_queuefront(ipftqent_t *); |
| 1861 | extern int ipf_settimeout_tcp(ipftuneable_t *, ipftuneval_t *, |
| 1862 | ipftq_t *); |
| 1863 | extern int ipf_checkv4sum(fr_info_t *); |
| 1864 | extern int ipf_checkl4sum(fr_info_t *); |
| 1865 | extern int ipf_ifpfillv4addr(int, struct sockaddr_in *, |
| 1866 | struct sockaddr_in *, struct in_addr *, |
| 1867 | struct in_addr *); |
| 1868 | extern int ipf_coalesce(fr_info_t *); |
| 1869 | #ifdef USE_INET6 |
| 1870 | extern int ipf_checkv6sum(fr_info_t *); |
| 1871 | extern int ipf_ifpfillv6addr(int, struct sockaddr_in6 *, |
| 1872 | struct sockaddr_in6 *, i6addr_t *, |
| 1873 | i6addr_t *); |
| 1874 | #endif |
| 1875 | |
| 1876 | extern int ipf_tune_add(ipf_main_softc_t *, ipftuneable_t *); |
| 1877 | extern int ipf_tune_add_array(ipf_main_softc_t *, ipftuneable_t *); |
| 1878 | extern int ipf_tune_del(ipf_main_softc_t *, ipftuneable_t *); |
| 1879 | extern int ipf_tune_del_array(ipf_main_softc_t *, ipftuneable_t *); |
| 1880 | extern int ipf_tune_array_link(ipf_main_softc_t *, ipftuneable_t *); |
| 1881 | extern int ipf_tune_array_unlink(ipf_main_softc_t *, |
| 1882 | ipftuneable_t *); |
| 1883 | extern ipftuneable_t *ipf_tune_array_copy(void *, size_t, |
| 1884 | ipftuneable_t *); |
| 1885 | |
| 1886 | extern int ipf_pr_pullup(fr_info_t *, int); |
| 1887 | |
| 1888 | extern int ipf_flush(ipf_main_softc_t *, minor_t, int); |
| 1889 | extern frgroup_t *ipf_group_add(ipf_main_softc_t *, char *, void *, |
| 1890 | u_32_t, minor_t, int); |
| 1891 | extern void ipf_group_del(ipf_main_softc_t *, frgroup_t *, frentry_t *); |
| 1892 | extern int ipf_derefrule(ipf_main_softc_t *, frentry_t **); |
| 1893 | extern frgroup_t *ipf_findgroup(ipf_main_softc_t *, char *, minor_t, |
| 1894 | int, frgroup_t ***); |
| 1895 | |
| 1896 | extern int ipf_log_init(void); |
| 1897 | extern int ipf_log_bytesused(ipf_main_softc_t *, int); |
| 1898 | extern int ipf_log_canread(ipf_main_softc_t *, int); |
| 1899 | extern int ipf_log_clear(ipf_main_softc_t *, minor_t); |
| 1900 | extern u_long ipf_log_failures(ipf_main_softc_t *, int); |
| 1901 | extern int ipf_log_read(ipf_main_softc_t *, minor_t, uio_t *); |
| 1902 | extern int ipf_log_items(ipf_main_softc_t *, int, fr_info_t *, |
| 1903 | void **, size_t *, int *, int); |
| 1904 | extern u_long ipf_log_logok(ipf_main_softc_t *, int); |
| 1905 | extern void ipf_log_unload(ipf_main_softc_t *); |
| 1906 | extern int ipf_log_pkt(fr_info_t *, u_int); |
| 1907 | extern int ipf_log_pkt(fr_info_t *, u_int); |
| 1908 | |
| 1909 | extern frentry_t *ipf_acctpkt(fr_info_t *, u_32_t *); |
| 1910 | extern u_short fr_cksum(fr_info_t *, ip_t *, int, void *); |
| 1911 | extern void ipf_deinitialise(ipf_main_softc_t *); |
| 1912 | extern int ipf_deliverlocal(ipf_main_softc_t *, int, void *, |
| 1913 | i6addr_t *); |
| 1914 | extern frentry_t *ipf_dstgrpmap(fr_info_t *, u_32_t *); |
| 1915 | extern void ipf_fixskip(frentry_t **, frentry_t *, int); |
| 1916 | extern void ipf_forgetifp(ipf_main_softc_t *, void *); |
| 1917 | extern frentry_t *ipf_getrulen(ipf_main_softc_t *, int, char *, |
| 1918 | u_32_t); |
| 1919 | extern int ipf_ifpaddr(ipf_main_softc_t *, int, int, void *, |
| 1920 | i6addr_t *, i6addr_t *); |
| 1921 | extern int ipf_initialise(void); |
| 1922 | extern int ipf_lock(void *, int *); |
| 1923 | extern int ipf_makefrip(int, ip_t *, fr_info_t *); |
| 1924 | extern void ipf_inet_mask_add(int, ipf_v4_masktab_t *); |
| 1925 | extern void ipf_inet_mask_del(int, ipf_v4_masktab_t *); |
| 1926 | #ifdef USE_INET6 |
| 1927 | extern void ipf_inet6_mask_add(int, i6addr_t *, ipf_v6_masktab_t *); |
| 1928 | extern void ipf_inet6_mask_del(int, i6addr_t *, ipf_v6_masktab_t *); |
| 1929 | #endif |
| 1930 | extern int ipf_matchtag(ipftag_t *, ipftag_t *); |
| 1931 | extern int ipf_matchicmpqueryreply(int, icmpinfo_t *, |
| 1932 | struct icmp *, int); |
| 1933 | extern u_32_t ipf_newisn(fr_info_t *); |
| 1934 | extern u_short ipf_nextipid(fr_info_t *); |
| 1935 | extern u_int ipf_pcksum(fr_info_t *, int, u_int); |
| 1936 | extern void ipf_rule_expire(ipf_main_softc_t *); |
| 1937 | extern int ipf_scanlist(fr_info_t *, u_32_t); |
| 1938 | extern frentry_t *ipf_srcgrpmap(fr_info_t *, u_32_t *); |
| 1939 | extern int ipf_tcpudpchk(fr_ip_t *, frtuc_t *); |
| 1940 | extern int ipf_verifysrc(fr_info_t *fin); |
| 1941 | extern int ipf_zerostats(ipf_main_softc_t *, void *); |
| 1942 | extern int ipf_getnextrule(ipf_main_softc_t *, ipftoken_t *, |
| 1943 | void *); |
| 1944 | extern int ipf_sync(ipf_main_softc_t *, void *); |
| 1945 | extern int ipf_token_deref(ipf_main_softc_t *, ipftoken_t *); |
| 1946 | extern void ipf_token_expire(ipf_main_softc_t *); |
| 1947 | extern ipftoken_t *ipf_token_find(ipf_main_softc_t *, int, int, |
| 1948 | void *); |
| 1949 | extern void ipf_token_free(ipf_main_softc_t *, ipftoken_t *); |
| 1950 | extern int ipf_token_del(ipf_main_softc_t *, int, int, |
| 1951 | void *); |
| 1952 | extern void ipf_token_mark_complete(ipftoken_t *); |
| 1953 | extern int ipf_genericiter(ipf_main_softc_t *, void *, |
| 1954 | int, void *); |
| 1955 | #ifdef IPFILTER_LOOKUP |
| 1956 | extern void *ipf_resolvelookup(int, u_int, u_int, |
| 1957 | lookupfunc_t *); |
| 1958 | #endif |
| 1959 | extern u_32_t ipf_random(void); |
| 1960 | |
| 1961 | extern int ipf_main_load(void); |
| 1962 | extern void *ipf_main_soft_create(void *); |
| 1963 | extern void ipf_main_soft_destroy(ipf_main_softc_t *); |
| 1964 | extern int ipf_main_soft_init(ipf_main_softc_t *); |
| 1965 | extern int ipf_main_soft_fini(ipf_main_softc_t *); |
| 1966 | extern int ipf_main_unload(void); |
| 1967 | extern int ipf_load_all(void); |
| 1968 | extern int ipf_unload_all(void); |
| 1969 | extern void ipf_destroy_all(ipf_main_softc_t *); |
| 1970 | extern ipf_main_softc_t *ipf_create_all(void *); |
| 1971 | extern int ipf_init_all(ipf_main_softc_t *); |
| 1972 | extern int ipf_fini_all(ipf_main_softc_t *); |
| 1973 | extern void ipf_log_soft_destroy(ipf_main_softc_t *, void *); |
| 1974 | extern void *ipf_log_soft_create(ipf_main_softc_t *); |
| 1975 | extern int ipf_log_soft_init(ipf_main_softc_t *, void *); |
| 1976 | extern int ipf_log_soft_fini(ipf_main_softc_t *, void *); |
| 1977 | extern int ipf_log_main_load(void); |
| 1978 | extern int ipf_log_main_unload(void); |
| 1979 | |
| 1980 | |
| 1981 | extern char ipfilter_version[]; |
| 1982 | #ifdef USE_INET6 |
| 1983 | extern int icmptoicmp6types[ICMP_MAXTYPE+1]; |
| 1984 | extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; |
| 1985 | extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; |
| 1986 | #endif |
| 1987 | #ifdef IPFILTER_COMPAT |
| 1988 | extern int ipf_in_compat(ipf_main_softc_t *, ipfobj_t *, void *,int); |
| 1989 | extern int ipf_out_compat(ipf_main_softc_t *, ipfobj_t *, void *); |
| 1990 | #endif |
| 1991 | extern int icmpreplytype4[ICMP_MAXTYPE + 1]; |
| 1992 | |
| 1993 | extern int ipf_ht_node_add(ipf_main_softc_t *, host_track_t *, |
| 1994 | int, i6addr_t *); |
| 1995 | extern int ipf_ht_node_del(host_track_t *, int, i6addr_t *); |
| 1996 | extern void ipf_rb_ht_flush(host_track_t *); |
| 1997 | extern void ipf_rb_ht_freenode(host_node_t *, void *); |
| 1998 | extern void ipf_rb_ht_init(host_track_t *); |
| 1999 | |
| 2000 | #endif /* _NETINET_IP_FIL_H_ */ |
| 2001 | |