| File: | src/sbin/ipsecctl/pfkey.c |
| Warning: | line 270, column 14 Result of 'calloc' is converted to a pointer of type 'struct sadb_ident', which is incompatible with sizeof operand type 'u_int8_t' |
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| 1 | /* $OpenBSD: pfkey.c,v 1.63 2021/10/22 12:30:54 bluhm Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> |
| 4 | * Copyright (c) 2003, 2004 Markus Friedl <markus@openbsd.org> |
| 5 | * Copyright (c) 2004, 2005 Hans-Joerg Hoexer <hshoexer@openbsd.org> |
| 6 | * |
| 7 | * Permission to use, copy, modify, and distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 18 | */ |
| 19 | |
| 20 | #include <sys/types.h> |
| 21 | #include <sys/queue.h> |
| 22 | #include <sys/uio.h> |
| 23 | #include <sys/socket.h> |
| 24 | #include <netinet/in.h> |
| 25 | #include <netinet/ip_ipsp.h> |
| 26 | #include <net/pfkeyv2.h> |
| 27 | |
| 28 | #include <err.h> |
| 29 | #include <errno(*__errno()).h> |
| 30 | #include <stdio.h> |
| 31 | #include <string.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <poll.h> |
| 34 | #include <unistd.h> |
| 35 | |
| 36 | #include "ipsecctl.h" |
| 37 | #include "pfkey.h" |
| 38 | |
| 39 | #define ROUNDUP(x)(((x) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t) - 1 )) (((x) + (PFKEYV2_CHUNKsizeof(u_int64_t) - 1)) & ~(PFKEYV2_CHUNKsizeof(u_int64_t) - 1)) |
| 40 | #define IOV_CNT20 20 |
| 41 | |
| 42 | static int fd; |
| 43 | static u_int32_t sadb_msg_seq = 1; |
| 44 | |
| 45 | static int pfkey_flow(int, u_int8_t, u_int8_t, u_int8_t, u_int8_t, |
| 46 | struct ipsec_addr_wrap *, u_int16_t, |
| 47 | struct ipsec_addr_wrap *, u_int16_t, |
| 48 | struct ipsec_addr_wrap *, struct ipsec_addr_wrap *, |
| 49 | struct ipsec_auth *, u_int8_t); |
| 50 | static int pfkey_sa(int, u_int8_t, u_int8_t, u_int32_t, |
| 51 | struct ipsec_addr_wrap *, struct ipsec_addr_wrap *, |
| 52 | u_int8_t, u_int16_t, |
| 53 | struct ipsec_transforms *, struct ipsec_key *, |
| 54 | struct ipsec_key *, u_int8_t); |
| 55 | static int pfkey_sabundle(int, u_int8_t, u_int8_t, u_int8_t, |
| 56 | struct ipsec_addr_wrap *, u_int32_t, |
| 57 | struct ipsec_addr_wrap *, u_int32_t); |
| 58 | static int pfkey_reply(int, u_int8_t **, ssize_t *); |
| 59 | int pfkey_parse(struct sadb_msg *, struct ipsec_rule *); |
| 60 | int pfkey_ipsec_flush(void); |
| 61 | int pfkey_ipsec_establish(int, struct ipsec_rule *); |
| 62 | int pfkey_init(void); |
| 63 | |
| 64 | static int |
| 65 | pfkey_flow(int sd, u_int8_t satype, u_int8_t action, u_int8_t direction, |
| 66 | u_int8_t proto, struct ipsec_addr_wrap *src, u_int16_t sport, |
| 67 | struct ipsec_addr_wrap *dst, u_int16_t dport, |
| 68 | struct ipsec_addr_wrap *local, struct ipsec_addr_wrap *peer, |
| 69 | struct ipsec_auth *auth, u_int8_t flowtype) |
| 70 | { |
| 71 | struct sadb_msg smsg; |
| 72 | struct sadb_address sa_src, sa_dst, sa_local, sa_peer, sa_smask, |
| 73 | sa_dmask; |
| 74 | struct sadb_protocol sa_flowtype, sa_protocol; |
| 75 | struct sadb_ident *sa_srcid, *sa_dstid; |
| 76 | struct sockaddr_storage ssrc, sdst, slocal, speer, smask, dmask; |
| 77 | struct iovec iov[IOV_CNT20]; |
| 78 | ssize_t n; |
| 79 | int iov_cnt, len, ret = 0; |
| 80 | |
| 81 | sa_srcid = sa_dstid = NULL((void *)0); |
| 82 | |
| 83 | bzero(&ssrc, sizeof(ssrc)); |
| 84 | bzero(&smask, sizeof(smask)); |
| 85 | ssrc.ss_family = smask.ss_family = src->af; |
| 86 | switch (src->af) { |
| 87 | case AF_INET2: |
| 88 | ((struct sockaddr_in *)&ssrc)->sin_addr = src->address.v4ipa.v4; |
| 89 | ssrc.ss_len = sizeof(struct sockaddr_in); |
| 90 | ((struct sockaddr_in *)&smask)->sin_addr = src->mask.v4ipa.v4; |
| 91 | if (sport) { |
| 92 | ((struct sockaddr_in *)&ssrc)->sin_port = sport; |
| 93 | ((struct sockaddr_in *)&smask)->sin_port = 0xffff; |
| 94 | } |
| 95 | break; |
| 96 | case AF_INET624: |
| 97 | ((struct sockaddr_in6 *)&ssrc)->sin6_addr = src->address.v6ipa.v6; |
| 98 | ssrc.ss_len = sizeof(struct sockaddr_in6); |
| 99 | ((struct sockaddr_in6 *)&smask)->sin6_addr = src->mask.v6ipa.v6; |
| 100 | if (sport) { |
| 101 | ((struct sockaddr_in6 *)&ssrc)->sin6_port = sport; |
| 102 | ((struct sockaddr_in6 *)&smask)->sin6_port = 0xffff; |
| 103 | } |
| 104 | break; |
| 105 | default: |
| 106 | warnx("unsupported address family %d", src->af); |
| 107 | return -1; |
| 108 | } |
| 109 | smask.ss_len = ssrc.ss_len; |
| 110 | |
| 111 | bzero(&sdst, sizeof(sdst)); |
| 112 | bzero(&dmask, sizeof(dmask)); |
| 113 | sdst.ss_family = dmask.ss_family = dst->af; |
| 114 | switch (dst->af) { |
| 115 | case AF_INET2: |
| 116 | ((struct sockaddr_in *)&sdst)->sin_addr = dst->address.v4ipa.v4; |
| 117 | sdst.ss_len = sizeof(struct sockaddr_in); |
| 118 | ((struct sockaddr_in *)&dmask)->sin_addr = dst->mask.v4ipa.v4; |
| 119 | if (dport) { |
| 120 | ((struct sockaddr_in *)&sdst)->sin_port = dport; |
| 121 | ((struct sockaddr_in *)&dmask)->sin_port = 0xffff; |
| 122 | } |
| 123 | break; |
| 124 | case AF_INET624: |
| 125 | ((struct sockaddr_in6 *)&sdst)->sin6_addr = dst->address.v6ipa.v6; |
| 126 | sdst.ss_len = sizeof(struct sockaddr_in6); |
| 127 | ((struct sockaddr_in6 *)&dmask)->sin6_addr = dst->mask.v6ipa.v6; |
| 128 | if (dport) { |
| 129 | ((struct sockaddr_in6 *)&sdst)->sin6_port = dport; |
| 130 | ((struct sockaddr_in6 *)&dmask)->sin6_port = 0xffff; |
| 131 | } |
| 132 | break; |
| 133 | default: |
| 134 | warnx("unsupported address family %d", dst->af); |
| 135 | return -1; |
| 136 | } |
| 137 | dmask.ss_len = sdst.ss_len; |
| 138 | |
| 139 | bzero(&slocal, sizeof(slocal)); |
| 140 | if (local) { |
| 141 | slocal.ss_family = local->af; |
| 142 | switch (local->af) { |
| 143 | case AF_INET2: |
| 144 | ((struct sockaddr_in *)&slocal)->sin_addr = |
| 145 | local->address.v4ipa.v4; |
| 146 | slocal.ss_len = sizeof(struct sockaddr_in); |
| 147 | break; |
| 148 | case AF_INET624: |
| 149 | ((struct sockaddr_in6 *)&slocal)->sin6_addr = |
| 150 | local->address.v6ipa.v6; |
| 151 | slocal.ss_len = sizeof(struct sockaddr_in6); |
| 152 | break; |
| 153 | default: |
| 154 | warnx("unsupported address family %d", local->af); |
| 155 | return -1; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | bzero(&speer, sizeof(speer)); |
| 160 | if (peer) { |
| 161 | speer.ss_family = peer->af; |
| 162 | switch (peer->af) { |
| 163 | case AF_INET2: |
| 164 | ((struct sockaddr_in *)&speer)->sin_addr = |
| 165 | peer->address.v4ipa.v4; |
| 166 | speer.ss_len = sizeof(struct sockaddr_in); |
| 167 | break; |
| 168 | case AF_INET624: |
| 169 | ((struct sockaddr_in6 *)&speer)->sin6_addr = |
| 170 | peer->address.v6ipa.v6; |
| 171 | speer.ss_len = sizeof(struct sockaddr_in6); |
| 172 | break; |
| 173 | default: |
| 174 | warnx("unsupported address family %d", peer->af); |
| 175 | return -1; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | bzero(&smsg, sizeof(smsg)); |
| 180 | smsg.sadb_msg_version = PF_KEY_V22; |
| 181 | smsg.sadb_msg_seq = sadb_msg_seq++; |
| 182 | smsg.sadb_msg_pid = getpid(); |
| 183 | smsg.sadb_msg_len = sizeof(smsg) / 8; |
| 184 | smsg.sadb_msg_type = action; |
| 185 | smsg.sadb_msg_satype = satype; |
| 186 | |
| 187 | bzero(&sa_flowtype, sizeof(sa_flowtype)); |
| 188 | sa_flowtype.sadb_protocol_exttype = SADB_X_EXT_FLOW_TYPE20; |
| 189 | sa_flowtype.sadb_protocol_len = sizeof(sa_flowtype) / 8; |
| 190 | sa_flowtype.sadb_protocol_direction = direction; |
| 191 | |
| 192 | switch (flowtype) { |
| 193 | case TYPE_USE: |
| 194 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_USE1; |
| 195 | break; |
| 196 | case TYPE_ACQUIRE: |
| 197 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_ACQUIRE2; |
| 198 | break; |
| 199 | case TYPE_REQUIRE: |
| 200 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_REQUIRE3; |
| 201 | break; |
| 202 | case TYPE_DENY: |
| 203 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_DENY5; |
| 204 | break; |
| 205 | case TYPE_BYPASS: |
| 206 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_BYPASS4; |
| 207 | break; |
| 208 | case TYPE_DONTACQ: |
| 209 | sa_flowtype.sadb_protocol_proto = SADB_X_FLOW_TYPE_DONTACQ6; |
| 210 | break; |
| 211 | default: |
| 212 | warnx("unsupported flowtype %d", flowtype); |
| 213 | return -1; |
| 214 | } |
| 215 | |
| 216 | bzero(&sa_protocol, sizeof(sa_protocol)); |
| 217 | sa_protocol.sadb_protocol_exttype = SADB_X_EXT_PROTOCOL19; |
| 218 | sa_protocol.sadb_protocol_len = sizeof(sa_protocol) / 8; |
| 219 | sa_protocol.sadb_protocol_direction = 0; |
| 220 | sa_protocol.sadb_protocol_proto = proto; |
| 221 | |
| 222 | bzero(&sa_src, sizeof(sa_src)); |
| 223 | sa_src.sadb_address_exttype = SADB_X_EXT_SRC_FLOW21; |
| 224 | sa_src.sadb_address_len = (sizeof(sa_src) + ROUNDUP(ssrc.ss_len)(((ssrc.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 225 | |
| 226 | bzero(&sa_smask, sizeof(sa_smask)); |
| 227 | sa_smask.sadb_address_exttype = SADB_X_EXT_SRC_MASK17; |
| 228 | sa_smask.sadb_address_len = |
| 229 | (sizeof(sa_smask) + ROUNDUP(smask.ss_len)(((smask.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 230 | |
| 231 | bzero(&sa_dst, sizeof(sa_dst)); |
| 232 | sa_dst.sadb_address_exttype = SADB_X_EXT_DST_FLOW22; |
| 233 | sa_dst.sadb_address_len = (sizeof(sa_dst) + ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 234 | |
| 235 | bzero(&sa_dmask, sizeof(sa_dmask)); |
| 236 | sa_dmask.sadb_address_exttype = SADB_X_EXT_DST_MASK18; |
| 237 | sa_dmask.sadb_address_len = |
| 238 | (sizeof(sa_dmask) + ROUNDUP(dmask.ss_len)(((dmask.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 239 | |
| 240 | if (local) { |
| 241 | bzero(&sa_local, sizeof(sa_local)); |
| 242 | sa_local.sadb_address_exttype = SADB_EXT_ADDRESS_SRC5; |
| 243 | sa_local.sadb_address_len = |
| 244 | (sizeof(sa_local) + ROUNDUP(slocal.ss_len)(((slocal.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 245 | } |
| 246 | if (peer) { |
| 247 | bzero(&sa_peer, sizeof(sa_peer)); |
| 248 | sa_peer.sadb_address_exttype = SADB_EXT_ADDRESS_DST6; |
| 249 | sa_peer.sadb_address_len = |
| 250 | (sizeof(sa_peer) + ROUNDUP(speer.ss_len)(((speer.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 251 | } |
| 252 | |
| 253 | if (auth && auth->srcid) { |
| 254 | len = ROUNDUP(strlen(auth->srcid) + 1)(((strlen(auth->srcid) + 1) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t) - 1)) + sizeof(*sa_srcid); |
| 255 | |
| 256 | sa_srcid = calloc(len, sizeof(u_int8_t)); |
| 257 | if (sa_srcid == NULL((void *)0)) |
| 258 | err(1, "pfkey_flow: calloc"); |
| 259 | |
| 260 | sa_srcid->sadb_ident_type = auth->srcid_type; |
| 261 | sa_srcid->sadb_ident_len = len / 8; |
| 262 | sa_srcid->sadb_ident_exttype = SADB_EXT_IDENTITY_SRC10; |
| 263 | |
| 264 | strlcpy((char *)(sa_srcid + 1), auth->srcid, |
| 265 | ROUNDUP(strlen(auth->srcid) + 1)(((strlen(auth->srcid) + 1) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t) - 1))); |
| 266 | } |
| 267 | if (auth && auth->dstid) { |
| 268 | len = ROUNDUP(strlen(auth->dstid) + 1)(((strlen(auth->dstid) + 1) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t) - 1)) + sizeof(*sa_dstid); |
| 269 | |
| 270 | sa_dstid = calloc(len, sizeof(u_int8_t)); |
Result of 'calloc' is converted to a pointer of type 'struct sadb_ident', which is incompatible with sizeof operand type 'u_int8_t' | |
| 271 | if (sa_dstid == NULL((void *)0)) |
| 272 | err(1, "pfkey_flow: calloc"); |
| 273 | |
| 274 | sa_dstid->sadb_ident_type = auth->dstid_type; |
| 275 | sa_dstid->sadb_ident_len = len / 8; |
| 276 | sa_dstid->sadb_ident_exttype = SADB_EXT_IDENTITY_DST11; |
| 277 | |
| 278 | strlcpy((char *)(sa_dstid + 1), auth->dstid, |
| 279 | ROUNDUP(strlen(auth->dstid) + 1)(((strlen(auth->dstid) + 1) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t) - 1))); |
| 280 | } |
| 281 | |
| 282 | iov_cnt = 0; |
| 283 | |
| 284 | /* header */ |
| 285 | iov[iov_cnt].iov_base = &smsg; |
| 286 | iov[iov_cnt].iov_len = sizeof(smsg); |
| 287 | iov_cnt++; |
| 288 | |
| 289 | /* add flow type */ |
| 290 | iov[iov_cnt].iov_base = &sa_flowtype; |
| 291 | iov[iov_cnt].iov_len = sizeof(sa_flowtype); |
| 292 | smsg.sadb_msg_len += sa_flowtype.sadb_protocol_len; |
| 293 | iov_cnt++; |
| 294 | |
| 295 | /* local ip */ |
| 296 | if (local) { |
| 297 | iov[iov_cnt].iov_base = &sa_local; |
| 298 | iov[iov_cnt].iov_len = sizeof(sa_local); |
| 299 | iov_cnt++; |
| 300 | iov[iov_cnt].iov_base = &slocal; |
| 301 | iov[iov_cnt].iov_len = ROUNDUP(slocal.ss_len)(((slocal.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 302 | smsg.sadb_msg_len += sa_local.sadb_address_len; |
| 303 | iov_cnt++; |
| 304 | } |
| 305 | |
| 306 | /* remote peer */ |
| 307 | if (peer) { |
| 308 | iov[iov_cnt].iov_base = &sa_peer; |
| 309 | iov[iov_cnt].iov_len = sizeof(sa_peer); |
| 310 | iov_cnt++; |
| 311 | iov[iov_cnt].iov_base = &speer; |
| 312 | iov[iov_cnt].iov_len = ROUNDUP(speer.ss_len)(((speer.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 313 | smsg.sadb_msg_len += sa_peer.sadb_address_len; |
| 314 | iov_cnt++; |
| 315 | } |
| 316 | |
| 317 | /* src addr */ |
| 318 | iov[iov_cnt].iov_base = &sa_src; |
| 319 | iov[iov_cnt].iov_len = sizeof(sa_src); |
| 320 | iov_cnt++; |
| 321 | iov[iov_cnt].iov_base = &ssrc; |
| 322 | iov[iov_cnt].iov_len = ROUNDUP(ssrc.ss_len)(((ssrc.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 323 | smsg.sadb_msg_len += sa_src.sadb_address_len; |
| 324 | iov_cnt++; |
| 325 | |
| 326 | /* src mask */ |
| 327 | iov[iov_cnt].iov_base = &sa_smask; |
| 328 | iov[iov_cnt].iov_len = sizeof(sa_smask); |
| 329 | iov_cnt++; |
| 330 | iov[iov_cnt].iov_base = &smask; |
| 331 | iov[iov_cnt].iov_len = ROUNDUP(smask.ss_len)(((smask.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 332 | smsg.sadb_msg_len += sa_smask.sadb_address_len; |
| 333 | iov_cnt++; |
| 334 | |
| 335 | /* dest addr */ |
| 336 | iov[iov_cnt].iov_base = &sa_dst; |
| 337 | iov[iov_cnt].iov_len = sizeof(sa_dst); |
| 338 | iov_cnt++; |
| 339 | iov[iov_cnt].iov_base = &sdst; |
| 340 | iov[iov_cnt].iov_len = ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 341 | smsg.sadb_msg_len += sa_dst.sadb_address_len; |
| 342 | iov_cnt++; |
| 343 | |
| 344 | /* dst mask */ |
| 345 | iov[iov_cnt].iov_base = &sa_dmask; |
| 346 | iov[iov_cnt].iov_len = sizeof(sa_dmask); |
| 347 | iov_cnt++; |
| 348 | iov[iov_cnt].iov_base = &dmask; |
| 349 | iov[iov_cnt].iov_len = ROUNDUP(dmask.ss_len)(((dmask.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 350 | smsg.sadb_msg_len += sa_dmask.sadb_address_len; |
| 351 | iov_cnt++; |
| 352 | |
| 353 | /* add protocol */ |
| 354 | iov[iov_cnt].iov_base = &sa_protocol; |
| 355 | iov[iov_cnt].iov_len = sizeof(sa_protocol); |
| 356 | smsg.sadb_msg_len += sa_protocol.sadb_protocol_len; |
| 357 | iov_cnt++; |
| 358 | |
| 359 | if (sa_srcid) { |
| 360 | /* src identity */ |
| 361 | iov[iov_cnt].iov_base = sa_srcid; |
| 362 | iov[iov_cnt].iov_len = sa_srcid->sadb_ident_len * 8; |
| 363 | smsg.sadb_msg_len += sa_srcid->sadb_ident_len; |
| 364 | iov_cnt++; |
| 365 | } |
| 366 | if (sa_dstid) { |
| 367 | /* dst identity */ |
| 368 | iov[iov_cnt].iov_base = sa_dstid; |
| 369 | iov[iov_cnt].iov_len = sa_dstid->sadb_ident_len * 8; |
| 370 | smsg.sadb_msg_len += sa_dstid->sadb_ident_len; |
| 371 | iov_cnt++; |
| 372 | } |
| 373 | len = smsg.sadb_msg_len * 8; |
| 374 | |
| 375 | do { |
| 376 | n = writev(sd, iov, iov_cnt); |
| 377 | } while (n == -1 && (errno(*__errno()) == EAGAIN35 || errno(*__errno()) == EINTR4)); |
| 378 | if (n == -1) { |
| 379 | warn("writev failed"); |
| 380 | ret = -1; |
| 381 | } |
| 382 | |
| 383 | free(sa_srcid); |
| 384 | free(sa_dstid); |
| 385 | |
| 386 | return ret; |
| 387 | } |
| 388 | |
| 389 | static int |
| 390 | pfkey_sa(int sd, u_int8_t satype, u_int8_t action, u_int32_t spi, |
| 391 | struct ipsec_addr_wrap *src, struct ipsec_addr_wrap *dst, |
| 392 | u_int8_t encap, u_int16_t dport, |
| 393 | struct ipsec_transforms *xfs, struct ipsec_key *authkey, |
| 394 | struct ipsec_key *enckey, u_int8_t tmode) |
| 395 | { |
| 396 | struct sadb_msg smsg; |
| 397 | struct sadb_sa sa; |
| 398 | struct sadb_address sa_src, sa_dst; |
| 399 | struct sadb_key sa_authkey, sa_enckey; |
| 400 | struct sadb_x_udpencap udpencap; |
| 401 | struct sockaddr_storage ssrc, sdst; |
| 402 | struct iovec iov[IOV_CNT20]; |
| 403 | ssize_t n; |
| 404 | int iov_cnt, len, ret = 0; |
| 405 | |
| 406 | bzero(&ssrc, sizeof(ssrc)); |
| 407 | ssrc.ss_family = src->af; |
| 408 | switch (src->af) { |
| 409 | case AF_INET2: |
| 410 | ((struct sockaddr_in *)&ssrc)->sin_addr = src->address.v4ipa.v4; |
| 411 | ssrc.ss_len = sizeof(struct sockaddr_in); |
| 412 | break; |
| 413 | case AF_INET624: |
| 414 | ((struct sockaddr_in6 *)&ssrc)->sin6_addr = src->address.v6ipa.v6; |
| 415 | ssrc.ss_len = sizeof(struct sockaddr_in6); |
| 416 | break; |
| 417 | default: |
| 418 | warnx("unsupported address family %d", src->af); |
| 419 | return -1; |
| 420 | } |
| 421 | |
| 422 | bzero(&sdst, sizeof(sdst)); |
| 423 | sdst.ss_family = dst->af; |
| 424 | switch (dst->af) { |
| 425 | case AF_INET2: |
| 426 | ((struct sockaddr_in *)&sdst)->sin_addr = dst->address.v4ipa.v4; |
| 427 | sdst.ss_len = sizeof(struct sockaddr_in); |
| 428 | break; |
| 429 | case AF_INET624: |
| 430 | ((struct sockaddr_in6 *)&sdst)->sin6_addr = dst->address.v6ipa.v6; |
| 431 | sdst.ss_len = sizeof(struct sockaddr_in6); |
| 432 | break; |
| 433 | default: |
| 434 | warnx("unsupported address family %d", dst->af); |
| 435 | return -1; |
| 436 | } |
| 437 | |
| 438 | bzero(&smsg, sizeof(smsg)); |
| 439 | smsg.sadb_msg_version = PF_KEY_V22; |
| 440 | smsg.sadb_msg_seq = sadb_msg_seq++; |
| 441 | smsg.sadb_msg_pid = getpid(); |
| 442 | smsg.sadb_msg_len = sizeof(smsg) / 8; |
| 443 | smsg.sadb_msg_type = action; |
| 444 | smsg.sadb_msg_satype = satype; |
| 445 | |
| 446 | bzero(&sa, sizeof(sa)); |
| 447 | sa.sadb_sa_len = sizeof(sa) / 8; |
| 448 | sa.sadb_sa_exttype = SADB_EXT_SA1; |
| 449 | sa.sadb_sa_spi = htonl(spi)(__uint32_t)(__builtin_constant_p(spi) ? (__uint32_t)(((__uint32_t )(spi) & 0xff) << 24 | ((__uint32_t)(spi) & 0xff00 ) << 8 | ((__uint32_t)(spi) & 0xff0000) >> 8 | ((__uint32_t)(spi) & 0xff000000) >> 24) : __swap32md (spi)); |
| 450 | sa.sadb_sa_state = SADB_SASTATE_MATURE1; |
| 451 | |
| 452 | if (satype != SADB_X_SATYPE_IPIP7 && tmode == IPSEC_TUNNEL) |
| 453 | sa.sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL0x004; |
| 454 | |
| 455 | if (xfs && xfs->authxf) { |
| 456 | switch (xfs->authxf->id) { |
| 457 | case AUTHXF_NONE: |
| 458 | break; |
| 459 | case AUTHXF_HMAC_MD5: |
| 460 | sa.sadb_sa_auth = SADB_AALG_MD5HMAC2; |
| 461 | break; |
| 462 | case AUTHXF_HMAC_RIPEMD160: |
| 463 | sa.sadb_sa_auth = SADB_X_AALG_RIPEMD160HMAC8; |
| 464 | break; |
| 465 | case AUTHXF_HMAC_SHA1: |
| 466 | sa.sadb_sa_auth = SADB_AALG_SHA1HMAC3; |
| 467 | break; |
| 468 | case AUTHXF_HMAC_SHA2_256: |
| 469 | sa.sadb_sa_auth = SADB_X_AALG_SHA2_2565; |
| 470 | break; |
| 471 | case AUTHXF_HMAC_SHA2_384: |
| 472 | sa.sadb_sa_auth = SADB_X_AALG_SHA2_3846; |
| 473 | break; |
| 474 | case AUTHXF_HMAC_SHA2_512: |
| 475 | sa.sadb_sa_auth = SADB_X_AALG_SHA2_5127; |
| 476 | break; |
| 477 | default: |
| 478 | warnx("unsupported authentication algorithm %d", |
| 479 | xfs->authxf->id); |
| 480 | } |
| 481 | } |
| 482 | if (xfs && xfs->encxf) { |
| 483 | switch (xfs->encxf->id) { |
| 484 | case ENCXF_NONE: |
| 485 | break; |
| 486 | case ENCXF_3DES_CBC: |
| 487 | sa.sadb_sa_encrypt = SADB_EALG_3DESCBC3; |
| 488 | break; |
| 489 | case ENCXF_AES: |
| 490 | case ENCXF_AES_128: |
| 491 | case ENCXF_AES_192: |
| 492 | case ENCXF_AES_256: |
| 493 | sa.sadb_sa_encrypt = SADB_X_EALG_AES12; |
| 494 | break; |
| 495 | case ENCXF_AESCTR: |
| 496 | case ENCXF_AES_128_CTR: |
| 497 | case ENCXF_AES_192_CTR: |
| 498 | case ENCXF_AES_256_CTR: |
| 499 | sa.sadb_sa_encrypt = SADB_X_EALG_AESCTR13; |
| 500 | break; |
| 501 | case ENCXF_AES_128_GCM: |
| 502 | case ENCXF_AES_192_GCM: |
| 503 | case ENCXF_AES_256_GCM: |
| 504 | sa.sadb_sa_encrypt = SADB_X_EALG_AESGCM1620; |
| 505 | break; |
| 506 | case ENCXF_AES_128_GMAC: |
| 507 | case ENCXF_AES_192_GMAC: |
| 508 | case ENCXF_AES_256_GMAC: |
| 509 | sa.sadb_sa_encrypt = SADB_X_EALG_AESGMAC21; |
| 510 | break; |
| 511 | case ENCXF_BLOWFISH: |
| 512 | sa.sadb_sa_encrypt = SADB_X_EALG_BLF7; |
| 513 | break; |
| 514 | case ENCXF_CAST128: |
| 515 | sa.sadb_sa_encrypt = SADB_X_EALG_CAST6; |
| 516 | break; |
| 517 | case ENCXF_NULL: |
| 518 | sa.sadb_sa_encrypt = SADB_EALG_NULL11; |
| 519 | break; |
| 520 | default: |
| 521 | warnx("unsupported encryption algorithm %d", |
| 522 | xfs->encxf->id); |
| 523 | } |
| 524 | } |
| 525 | if (xfs && xfs->compxf) { |
| 526 | switch (xfs->compxf->id) { |
| 527 | case COMPXF_DEFLATE: |
| 528 | sa.sadb_sa_encrypt = SADB_X_CALG_DEFLATE2; |
| 529 | break; |
| 530 | default: |
| 531 | warnx("unsupported compression algorithm %d", |
| 532 | xfs->compxf->id); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | bzero(&sa_src, sizeof(sa_src)); |
| 537 | sa_src.sadb_address_len = (sizeof(sa_src) + ROUNDUP(ssrc.ss_len)(((ssrc.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 538 | sa_src.sadb_address_exttype = SADB_EXT_ADDRESS_SRC5; |
| 539 | |
| 540 | bzero(&sa_dst, sizeof(sa_dst)); |
| 541 | sa_dst.sadb_address_len = (sizeof(sa_dst) + ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 542 | sa_dst.sadb_address_exttype = SADB_EXT_ADDRESS_DST6; |
| 543 | |
| 544 | if (encap) { |
| 545 | sa.sadb_sa_flags |= SADB_X_SAFLAGS_UDPENCAP0x200; |
| 546 | udpencap.sadb_x_udpencap_exttype = SADB_X_EXT_UDPENCAP31; |
| 547 | udpencap.sadb_x_udpencap_len = sizeof(udpencap) / 8; |
| 548 | udpencap.sadb_x_udpencap_port = htons(dport)(__uint16_t)(__builtin_constant_p(dport) ? (__uint16_t)(((__uint16_t )(dport) & 0xffU) << 8 | ((__uint16_t)(dport) & 0xff00U) >> 8) : __swap16md(dport)); |
| 549 | } |
| 550 | if (action == SADB_ADD3 && !authkey && !enckey && satype != |
| 551 | SADB_X_SATYPE_IPCOMP9 && satype != SADB_X_SATYPE_IPIP7) { /* XXX ENCNULL */ |
| 552 | warnx("no key specified"); |
| 553 | return -1; |
| 554 | } |
| 555 | if (authkey) { |
| 556 | bzero(&sa_authkey, sizeof(sa_authkey)); |
| 557 | sa_authkey.sadb_key_len = (sizeof(sa_authkey) + |
| 558 | ((authkey->len + 7) / 8) * 8) / 8; |
| 559 | sa_authkey.sadb_key_exttype = SADB_EXT_KEY_AUTH8; |
| 560 | sa_authkey.sadb_key_bits = 8 * authkey->len; |
| 561 | } |
| 562 | if (enckey) { |
| 563 | bzero(&sa_enckey, sizeof(sa_enckey)); |
| 564 | sa_enckey.sadb_key_len = (sizeof(sa_enckey) + |
| 565 | ((enckey->len + 7) / 8) * 8) / 8; |
| 566 | sa_enckey.sadb_key_exttype = SADB_EXT_KEY_ENCRYPT9; |
| 567 | sa_enckey.sadb_key_bits = 8 * enckey->len; |
| 568 | } |
| 569 | |
| 570 | iov_cnt = 0; |
| 571 | |
| 572 | /* header */ |
| 573 | iov[iov_cnt].iov_base = &smsg; |
| 574 | iov[iov_cnt].iov_len = sizeof(smsg); |
| 575 | iov_cnt++; |
| 576 | |
| 577 | /* sa */ |
| 578 | iov[iov_cnt].iov_base = &sa; |
| 579 | iov[iov_cnt].iov_len = sizeof(sa); |
| 580 | smsg.sadb_msg_len += sa.sadb_sa_len; |
| 581 | iov_cnt++; |
| 582 | |
| 583 | /* src addr */ |
| 584 | iov[iov_cnt].iov_base = &sa_src; |
| 585 | iov[iov_cnt].iov_len = sizeof(sa_src); |
| 586 | iov_cnt++; |
| 587 | iov[iov_cnt].iov_base = &ssrc; |
| 588 | iov[iov_cnt].iov_len = ROUNDUP(ssrc.ss_len)(((ssrc.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 589 | smsg.sadb_msg_len += sa_src.sadb_address_len; |
| 590 | iov_cnt++; |
| 591 | |
| 592 | /* dst addr */ |
| 593 | iov[iov_cnt].iov_base = &sa_dst; |
| 594 | iov[iov_cnt].iov_len = sizeof(sa_dst); |
| 595 | iov_cnt++; |
| 596 | iov[iov_cnt].iov_base = &sdst; |
| 597 | iov[iov_cnt].iov_len = ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 598 | smsg.sadb_msg_len += sa_dst.sadb_address_len; |
| 599 | iov_cnt++; |
| 600 | |
| 601 | if (encap) { |
| 602 | iov[iov_cnt].iov_base = &udpencap; |
| 603 | iov[iov_cnt].iov_len = sizeof(udpencap); |
| 604 | smsg.sadb_msg_len += udpencap.sadb_x_udpencap_len; |
| 605 | iov_cnt++; |
| 606 | } |
| 607 | if (authkey) { |
| 608 | /* authentication key */ |
| 609 | iov[iov_cnt].iov_base = &sa_authkey; |
| 610 | iov[iov_cnt].iov_len = sizeof(sa_authkey); |
| 611 | iov_cnt++; |
| 612 | iov[iov_cnt].iov_base = authkey->data; |
| 613 | iov[iov_cnt].iov_len = ((authkey->len + 7) / 8) * 8; |
| 614 | smsg.sadb_msg_len += sa_authkey.sadb_key_len; |
| 615 | iov_cnt++; |
| 616 | } |
| 617 | if (enckey) { |
| 618 | /* encryption key */ |
| 619 | iov[iov_cnt].iov_base = &sa_enckey; |
| 620 | iov[iov_cnt].iov_len = sizeof(sa_enckey); |
| 621 | iov_cnt++; |
| 622 | iov[iov_cnt].iov_base = enckey->data; |
| 623 | iov[iov_cnt].iov_len = ((enckey->len + 7) / 8) * 8; |
| 624 | smsg.sadb_msg_len += sa_enckey.sadb_key_len; |
| 625 | iov_cnt++; |
| 626 | } |
| 627 | |
| 628 | len = smsg.sadb_msg_len * 8; |
| 629 | if ((n = writev(sd, iov, iov_cnt)) == -1) { |
| 630 | warn("writev failed"); |
| 631 | ret = -1; |
| 632 | } else if (n != len) { |
| 633 | warnx("short write"); |
| 634 | ret = -1; |
| 635 | } |
| 636 | |
| 637 | return ret; |
| 638 | } |
| 639 | |
| 640 | static int |
| 641 | pfkey_sabundle(int sd, u_int8_t satype, u_int8_t satype2, u_int8_t action, |
| 642 | struct ipsec_addr_wrap *dst, u_int32_t spi, struct ipsec_addr_wrap *dst2, |
| 643 | u_int32_t spi2) |
| 644 | { |
| 645 | struct sadb_msg smsg; |
| 646 | struct sadb_sa sa1, sa2; |
| 647 | struct sadb_address sa_dst, sa_dst2; |
| 648 | struct sockaddr_storage sdst, sdst2; |
| 649 | struct sadb_protocol sa_proto; |
| 650 | struct iovec iov[IOV_CNT20]; |
| 651 | ssize_t n; |
| 652 | int iov_cnt, len, ret = 0; |
| 653 | |
| 654 | bzero(&sdst, sizeof(sdst)); |
| 655 | sdst.ss_family = dst->af; |
| 656 | switch (dst->af) { |
| 657 | case AF_INET2: |
| 658 | ((struct sockaddr_in *)&sdst)->sin_addr = dst->address.v4ipa.v4; |
| 659 | sdst.ss_len = sizeof(struct sockaddr_in); |
| 660 | break; |
| 661 | case AF_INET624: |
| 662 | ((struct sockaddr_in6 *)&sdst)->sin6_addr = dst->address.v6ipa.v6; |
| 663 | sdst.ss_len = sizeof(struct sockaddr_in6); |
| 664 | break; |
| 665 | default: |
| 666 | warnx("unsupported address family %d", dst->af); |
| 667 | return -1; |
| 668 | } |
| 669 | |
| 670 | bzero(&sdst2, sizeof(sdst2)); |
| 671 | sdst2.ss_family = dst2->af; |
| 672 | switch (dst2->af) { |
| 673 | case AF_INET2: |
| 674 | ((struct sockaddr_in *)&sdst2)->sin_addr = dst2->address.v4ipa.v4; |
| 675 | sdst2.ss_len = sizeof(struct sockaddr_in); |
| 676 | break; |
| 677 | case AF_INET624: |
| 678 | ((struct sockaddr_in6 *)&sdst2)->sin6_addr = dst2->address.v6ipa.v6; |
| 679 | sdst2.ss_len = sizeof(struct sockaddr_in6); |
| 680 | break; |
| 681 | default: |
| 682 | warnx("unsupported address family %d", dst2->af); |
| 683 | return -1; |
| 684 | } |
| 685 | |
| 686 | bzero(&smsg, sizeof(smsg)); |
| 687 | smsg.sadb_msg_version = PF_KEY_V22; |
| 688 | smsg.sadb_msg_seq = sadb_msg_seq++; |
| 689 | smsg.sadb_msg_pid = getpid(); |
| 690 | smsg.sadb_msg_len = sizeof(smsg) / 8; |
| 691 | smsg.sadb_msg_type = action; |
| 692 | smsg.sadb_msg_satype = satype; |
| 693 | |
| 694 | bzero(&sa1, sizeof(sa1)); |
| 695 | sa1.sadb_sa_len = sizeof(sa1) / 8; |
| 696 | sa1.sadb_sa_exttype = SADB_EXT_SA1; |
| 697 | sa1.sadb_sa_spi = htonl(spi)(__uint32_t)(__builtin_constant_p(spi) ? (__uint32_t)(((__uint32_t )(spi) & 0xff) << 24 | ((__uint32_t)(spi) & 0xff00 ) << 8 | ((__uint32_t)(spi) & 0xff0000) >> 8 | ((__uint32_t)(spi) & 0xff000000) >> 24) : __swap32md (spi)); |
| 698 | sa1.sadb_sa_state = SADB_SASTATE_MATURE1; |
| 699 | |
| 700 | bzero(&sa2, sizeof(sa2)); |
| 701 | sa2.sadb_sa_len = sizeof(sa2) / 8; |
| 702 | sa2.sadb_sa_exttype = SADB_X_EXT_SA223; |
| 703 | sa2.sadb_sa_spi = htonl(spi2)(__uint32_t)(__builtin_constant_p(spi2) ? (__uint32_t)(((__uint32_t )(spi2) & 0xff) << 24 | ((__uint32_t)(spi2) & 0xff00 ) << 8 | ((__uint32_t)(spi2) & 0xff0000) >> 8 | ((__uint32_t)(spi2) & 0xff000000) >> 24) : __swap32md (spi2)); |
| 704 | sa2.sadb_sa_state = SADB_SASTATE_MATURE1; |
| 705 | iov_cnt = 0; |
| 706 | |
| 707 | bzero(&sa_dst, sizeof(sa_dst)); |
| 708 | sa_dst.sadb_address_exttype = SADB_EXT_ADDRESS_DST6; |
| 709 | sa_dst.sadb_address_len = (sizeof(sa_dst) + ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 710 | |
| 711 | bzero(&sa_dst2, sizeof(sa_dst2)); |
| 712 | sa_dst2.sadb_address_exttype = SADB_X_EXT_DST224; |
| 713 | sa_dst2.sadb_address_len = (sizeof(sa_dst2) + ROUNDUP(sdst2.ss_len)(((sdst2.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1))) / 8; |
| 714 | |
| 715 | bzero(&sa_proto, sizeof(sa_proto)); |
| 716 | sa_proto.sadb_protocol_exttype = SADB_X_EXT_SATYPE235; |
| 717 | sa_proto.sadb_protocol_len = sizeof(sa_proto) / 8; |
| 718 | sa_proto.sadb_protocol_direction = 0; |
| 719 | sa_proto.sadb_protocol_proto = satype2; |
| 720 | |
| 721 | /* header */ |
| 722 | iov[iov_cnt].iov_base = &smsg; |
| 723 | iov[iov_cnt].iov_len = sizeof(smsg); |
| 724 | iov_cnt++; |
| 725 | |
| 726 | /* sa */ |
| 727 | iov[iov_cnt].iov_base = &sa1; |
| 728 | iov[iov_cnt].iov_len = sizeof(sa1); |
| 729 | smsg.sadb_msg_len += sa1.sadb_sa_len; |
| 730 | iov_cnt++; |
| 731 | |
| 732 | /* dst addr */ |
| 733 | iov[iov_cnt].iov_base = &sa_dst; |
| 734 | iov[iov_cnt].iov_len = sizeof(sa_dst); |
| 735 | iov_cnt++; |
| 736 | iov[iov_cnt].iov_base = &sdst; |
| 737 | iov[iov_cnt].iov_len = ROUNDUP(sdst.ss_len)(((sdst.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 738 | smsg.sadb_msg_len += sa_dst.sadb_address_len; |
| 739 | iov_cnt++; |
| 740 | |
| 741 | /* second sa */ |
| 742 | iov[iov_cnt].iov_base = &sa2; |
| 743 | iov[iov_cnt].iov_len = sizeof(sa2); |
| 744 | smsg.sadb_msg_len += sa2.sadb_sa_len; |
| 745 | iov_cnt++; |
| 746 | |
| 747 | /* second dst addr */ |
| 748 | iov[iov_cnt].iov_base = &sa_dst2; |
| 749 | iov[iov_cnt].iov_len = sizeof(sa_dst2); |
| 750 | iov_cnt++; |
| 751 | iov[iov_cnt].iov_base = &sdst2; |
| 752 | iov[iov_cnt].iov_len = ROUNDUP(sdst2.ss_len)(((sdst2.ss_len) + (sizeof(u_int64_t) - 1)) & ~(sizeof(u_int64_t ) - 1)); |
| 753 | smsg.sadb_msg_len += sa_dst2.sadb_address_len; |
| 754 | iov_cnt++; |
| 755 | |
| 756 | /* SA type */ |
| 757 | iov[iov_cnt].iov_base = &sa_proto; |
| 758 | iov[iov_cnt].iov_len = sizeof(sa_proto); |
| 759 | smsg.sadb_msg_len += sa_proto.sadb_protocol_len; |
| 760 | iov_cnt++; |
| 761 | |
| 762 | len = smsg.sadb_msg_len * 8; |
| 763 | if ((n = writev(sd, iov, iov_cnt)) == -1) { |
| 764 | warn("writev failed"); |
| 765 | ret = -1; |
| 766 | } else if (n != len) { |
| 767 | warnx("short write"); |
| 768 | ret = -1; |
| 769 | } |
| 770 | |
| 771 | return (ret); |
| 772 | } |
| 773 | |
| 774 | static int |
| 775 | pfkey_reply(int sd, u_int8_t **datap, ssize_t *lenp) |
| 776 | { |
| 777 | struct sadb_msg hdr; |
| 778 | ssize_t len; |
| 779 | u_int8_t *data; |
| 780 | |
| 781 | if (recv(sd, &hdr, sizeof(hdr), MSG_PEEK0x2) != sizeof(hdr)) { |
| 782 | warnx("short read"); |
| 783 | return -1; |
| 784 | } |
| 785 | len = hdr.sadb_msg_len * PFKEYV2_CHUNKsizeof(u_int64_t); |
| 786 | if ((data = malloc(len)) == NULL((void *)0)) |
| 787 | err(1, "pfkey_reply: malloc"); |
| 788 | if (read(sd, data, len) != len) { |
| 789 | warn("PF_KEY short read"); |
| 790 | freezero(data, len); |
| 791 | return -1; |
| 792 | } |
| 793 | if (datap) { |
| 794 | *datap = data; |
| 795 | if (lenp) |
| 796 | *lenp = len; |
| 797 | } else { |
| 798 | freezero(data, len); |
| 799 | } |
| 800 | if (datap == NULL((void *)0) && hdr.sadb_msg_errno != 0) { |
| 801 | errno(*__errno()) = hdr.sadb_msg_errno; |
| 802 | if (errno(*__errno()) != EEXIST17) { |
| 803 | warn("PF_KEY failed"); |
| 804 | return -1; |
| 805 | } |
| 806 | } |
| 807 | return 0; |
| 808 | } |
| 809 | |
| 810 | int |
| 811 | pfkey_parse(struct sadb_msg *msg, struct ipsec_rule *rule) |
| 812 | { |
| 813 | struct sadb_ext *ext; |
| 814 | struct sadb_address *saddr; |
| 815 | struct sadb_protocol *sproto; |
| 816 | struct sadb_ident *sident; |
| 817 | struct sockaddr *sa; |
| 818 | struct sockaddr_in *sa_in; |
| 819 | struct sockaddr_in6 *sa_in6; |
| 820 | int len; |
| 821 | |
| 822 | switch (msg->sadb_msg_satype) { |
| 823 | case SADB_SATYPE_ESP2: |
| 824 | rule->satype = IPSEC_ESP; |
| 825 | break; |
| 826 | case SADB_SATYPE_AH1: |
| 827 | rule->satype = IPSEC_AH; |
| 828 | break; |
| 829 | case SADB_X_SATYPE_IPCOMP9: |
| 830 | rule->satype = IPSEC_IPCOMP; |
| 831 | break; |
| 832 | case SADB_X_SATYPE_IPIP7: |
| 833 | rule->satype = IPSEC_IPIP; |
| 834 | break; |
| 835 | default: |
| 836 | return (1); |
| 837 | } |
| 838 | |
| 839 | for (ext = (struct sadb_ext *)(msg + 1); |
| 840 | (size_t)((u_int8_t *)ext - (u_int8_t *)msg) < |
| 841 | msg->sadb_msg_len * PFKEYV2_CHUNKsizeof(u_int64_t) && ext->sadb_ext_len > 0; |
| 842 | ext = (struct sadb_ext *)((u_int8_t *)ext + |
| 843 | ext->sadb_ext_len * PFKEYV2_CHUNKsizeof(u_int64_t))) { |
| 844 | switch (ext->sadb_ext_type) { |
| 845 | case SADB_EXT_ADDRESS_SRC5: |
| 846 | saddr = (struct sadb_address *)ext; |
| 847 | sa = (struct sockaddr *)(saddr + 1); |
| 848 | |
| 849 | rule->local = calloc(1, sizeof(struct ipsec_addr_wrap)); |
| 850 | if (rule->local == NULL((void *)0)) |
| 851 | err(1, "pfkey_parse: calloc"); |
| 852 | |
| 853 | rule->local->af = sa->sa_family; |
| 854 | switch (sa->sa_family) { |
| 855 | case AF_INET2: |
| 856 | bcopy(&((struct sockaddr_in *)sa)->sin_addr, |
| 857 | &rule->local->address.v4ipa.v4, |
| 858 | sizeof(struct in_addr)); |
| 859 | set_ipmask(rule->local, 32); |
| 860 | break; |
| 861 | case AF_INET624: |
| 862 | bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, |
| 863 | &rule->local->address.v6ipa.v6, |
| 864 | sizeof(struct in6_addr)); |
| 865 | set_ipmask(rule->local, 128); |
| 866 | break; |
| 867 | default: |
| 868 | return (1); |
| 869 | } |
| 870 | break; |
| 871 | |
| 872 | |
| 873 | case SADB_EXT_ADDRESS_DST6: |
| 874 | saddr = (struct sadb_address *)ext; |
| 875 | sa = (struct sockaddr *)(saddr + 1); |
| 876 | |
| 877 | rule->peer = calloc(1, sizeof(struct ipsec_addr_wrap)); |
| 878 | if (rule->peer == NULL((void *)0)) |
| 879 | err(1, "pfkey_parse: calloc"); |
| 880 | |
| 881 | rule->peer->af = sa->sa_family; |
| 882 | switch (sa->sa_family) { |
| 883 | case AF_INET2: |
| 884 | bcopy(&((struct sockaddr_in *)sa)->sin_addr, |
| 885 | &rule->peer->address.v4ipa.v4, |
| 886 | sizeof(struct in_addr)); |
| 887 | set_ipmask(rule->peer, 32); |
| 888 | break; |
| 889 | case AF_INET624: |
| 890 | bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, |
| 891 | &rule->peer->address.v6ipa.v6, |
| 892 | sizeof(struct in6_addr)); |
| 893 | set_ipmask(rule->peer, 128); |
| 894 | break; |
| 895 | default: |
| 896 | return (1); |
| 897 | } |
| 898 | break; |
| 899 | |
| 900 | case SADB_EXT_IDENTITY_SRC10: |
| 901 | sident = (struct sadb_ident *)ext; |
| 902 | len = (sident->sadb_ident_len * sizeof(uint64_t)) - |
| 903 | sizeof(struct sadb_ident); |
| 904 | |
| 905 | if (rule->auth == NULL((void *)0)) { |
| 906 | rule->auth = calloc(1, sizeof(struct |
| 907 | ipsec_auth)); |
| 908 | if (rule->auth == NULL((void *)0)) |
| 909 | err(1, "pfkey_parse: calloc"); |
| 910 | } |
| 911 | |
| 912 | rule->auth->srcid = calloc(1, len); |
| 913 | if (rule->auth->srcid == NULL((void *)0)) |
| 914 | err(1, "pfkey_parse: calloc"); |
| 915 | |
| 916 | strlcpy(rule->auth->srcid, (char *)(sident + 1), len); |
| 917 | break; |
| 918 | |
| 919 | case SADB_EXT_IDENTITY_DST11: |
| 920 | sident = (struct sadb_ident *)ext; |
| 921 | len = (sident->sadb_ident_len * sizeof(uint64_t)) - |
| 922 | sizeof(struct sadb_ident); |
| 923 | |
| 924 | if (rule->auth == NULL((void *)0)) { |
| 925 | rule->auth = calloc(1, sizeof(struct |
| 926 | ipsec_auth)); |
| 927 | if (rule->auth == NULL((void *)0)) |
| 928 | err(1, "pfkey_parse: calloc"); |
| 929 | } |
| 930 | |
| 931 | rule->auth->dstid = calloc(1, len); |
| 932 | if (rule->auth->dstid == NULL((void *)0)) |
| 933 | err(1, "pfkey_parse: calloc"); |
| 934 | |
| 935 | strlcpy(rule->auth->dstid, (char *)(sident + 1), len); |
| 936 | break; |
| 937 | |
| 938 | case SADB_X_EXT_PROTOCOL19: |
| 939 | sproto = (struct sadb_protocol *)ext; |
| 940 | if (sproto->sadb_protocol_direction == 0) |
| 941 | rule->proto = sproto->sadb_protocol_proto; |
| 942 | break; |
| 943 | |
| 944 | case SADB_X_EXT_FLOW_TYPE20: |
| 945 | sproto = (struct sadb_protocol *)ext; |
| 946 | |
| 947 | switch (sproto->sadb_protocol_direction) { |
| 948 | case IPSP_DIRECTION_IN0x1: |
| 949 | rule->direction = IPSEC_IN; |
| 950 | break; |
| 951 | case IPSP_DIRECTION_OUT0x2: |
| 952 | rule->direction = IPSEC_OUT; |
| 953 | break; |
| 954 | default: |
| 955 | return (1); |
| 956 | } |
| 957 | switch (sproto->sadb_protocol_proto) { |
| 958 | case SADB_X_FLOW_TYPE_USE1: |
| 959 | rule->flowtype = TYPE_USE; |
| 960 | break; |
| 961 | case SADB_X_FLOW_TYPE_ACQUIRE2: |
| 962 | rule->flowtype = TYPE_ACQUIRE; |
| 963 | break; |
| 964 | case SADB_X_FLOW_TYPE_REQUIRE3: |
| 965 | rule->flowtype = TYPE_REQUIRE; |
| 966 | break; |
| 967 | case SADB_X_FLOW_TYPE_DENY5: |
| 968 | rule->flowtype = TYPE_DENY; |
| 969 | break; |
| 970 | case SADB_X_FLOW_TYPE_BYPASS4: |
| 971 | rule->flowtype = TYPE_BYPASS; |
| 972 | break; |
| 973 | case SADB_X_FLOW_TYPE_DONTACQ6: |
| 974 | rule->flowtype = TYPE_DONTACQ; |
| 975 | break; |
| 976 | default: |
| 977 | rule->flowtype = TYPE_UNKNOWN; |
| 978 | break; |
| 979 | } |
| 980 | break; |
| 981 | |
| 982 | case SADB_X_EXT_SRC_FLOW21: |
| 983 | saddr = (struct sadb_address *)ext; |
| 984 | sa = (struct sockaddr *)(saddr + 1); |
| 985 | |
| 986 | if (rule->src == NULL((void *)0)) { |
| 987 | rule->src = calloc(1, |
| 988 | sizeof(struct ipsec_addr_wrap)); |
| 989 | if (rule->src == NULL((void *)0)) |
| 990 | err(1, "pfkey_parse: calloc"); |
| 991 | } |
| 992 | |
| 993 | rule->src->af = sa->sa_family; |
| 994 | switch (sa->sa_family) { |
| 995 | case AF_INET2: |
| 996 | bcopy(&((struct sockaddr_in *)sa)->sin_addr, |
| 997 | &rule->src->address.v4ipa.v4, |
| 998 | sizeof(struct in_addr)); |
| 999 | rule->sport = |
| 1000 | ((struct sockaddr_in *)sa)->sin_port; |
| 1001 | break; |
| 1002 | case AF_INET624: |
| 1003 | bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, |
| 1004 | &rule->src->address.v6ipa.v6, |
| 1005 | sizeof(struct in6_addr)); |
| 1006 | rule->sport = |
| 1007 | ((struct sockaddr_in6 *)sa)->sin6_port; |
| 1008 | break; |
| 1009 | default: |
| 1010 | return (1); |
| 1011 | } |
| 1012 | break; |
| 1013 | |
| 1014 | case SADB_X_EXT_DST_FLOW22: |
| 1015 | saddr = (struct sadb_address *)ext; |
| 1016 | sa = (struct sockaddr *)(saddr + 1); |
| 1017 | |
| 1018 | if (rule->dst == NULL((void *)0)) { |
| 1019 | rule->dst = calloc(1, |
| 1020 | sizeof(struct ipsec_addr_wrap)); |
| 1021 | if (rule->dst == NULL((void *)0)) |
| 1022 | err(1, "pfkey_parse: calloc"); |
| 1023 | } |
| 1024 | |
| 1025 | rule->dst->af = sa->sa_family; |
| 1026 | switch (sa->sa_family) { |
| 1027 | case AF_INET2: |
| 1028 | bcopy(&((struct sockaddr_in *)sa)->sin_addr, |
| 1029 | &rule->dst->address.v4ipa.v4, |
| 1030 | sizeof(struct in_addr)); |
| 1031 | rule->dport = |
| 1032 | ((struct sockaddr_in *)sa)->sin_port; |
| 1033 | break; |
| 1034 | case AF_INET624: |
| 1035 | bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, |
| 1036 | &rule->dst->address.v6ipa.v6, |
| 1037 | sizeof(struct in6_addr)); |
| 1038 | rule->dport = |
| 1039 | ((struct sockaddr_in6 *)sa)->sin6_port; |
| 1040 | break; |
| 1041 | default: |
| 1042 | return (1); |
| 1043 | } |
| 1044 | break; |
| 1045 | |
| 1046 | |
| 1047 | case SADB_X_EXT_SRC_MASK17: |
| 1048 | saddr = (struct sadb_address *)ext; |
| 1049 | sa = (struct sockaddr *)(saddr + 1); |
| 1050 | |
| 1051 | if (rule->src == NULL((void *)0)) { |
| 1052 | rule->src = calloc(1, |
| 1053 | sizeof(struct ipsec_addr_wrap)); |
| 1054 | if (rule->src == NULL((void *)0)) |
| 1055 | err(1, "pfkey_parse: calloc"); |
| 1056 | } |
| 1057 | |
| 1058 | rule->src->af = sa->sa_family; |
| 1059 | switch (sa->sa_family) { |
| 1060 | case AF_INET2: |
| 1061 | sa_in = (struct sockaddr_in *)sa; |
| 1062 | bcopy(&sa_in->sin_addr, &rule->src->mask.v4ipa.v4, |
| 1063 | sizeof(struct in_addr)); |
| 1064 | break; |
| 1065 | case AF_INET624: |
| 1066 | sa_in6 = (struct sockaddr_in6 *)sa; |
| 1067 | bcopy(&sa_in6->sin6_addr, &rule->src->mask.v6ipa.v6, |
| 1068 | sizeof(struct in6_addr)); |
| 1069 | break; |
| 1070 | |
| 1071 | default: |
| 1072 | return (1); |
| 1073 | } |
| 1074 | break; |
| 1075 | |
| 1076 | case SADB_X_EXT_DST_MASK18: |
| 1077 | saddr = (struct sadb_address *)ext; |
| 1078 | sa = (struct sockaddr *)(saddr + 1); |
| 1079 | |
| 1080 | if (rule->dst == NULL((void *)0)) { |
| 1081 | rule->dst = calloc(1, |
| 1082 | sizeof(struct ipsec_addr_wrap)); |
| 1083 | if (rule->dst == NULL((void *)0)) |
| 1084 | err(1, "pfkey_parse: calloc"); |
| 1085 | } |
| 1086 | |
| 1087 | rule->dst->af = sa->sa_family; |
| 1088 | switch (sa->sa_family) { |
| 1089 | case AF_INET2: |
| 1090 | sa_in = (struct sockaddr_in *)sa; |
| 1091 | bcopy(&sa_in->sin_addr, &rule->dst->mask.v4ipa.v4, |
| 1092 | sizeof(struct in_addr)); |
| 1093 | break; |
| 1094 | case AF_INET624: |
| 1095 | sa_in6 = (struct sockaddr_in6 *)sa; |
| 1096 | bcopy(&sa_in6->sin6_addr, &rule->dst->mask.v6ipa.v6, |
| 1097 | sizeof(struct in6_addr)); |
| 1098 | break; |
| 1099 | default: |
| 1100 | return (1); |
| 1101 | } |
| 1102 | break; |
| 1103 | |
| 1104 | default: |
| 1105 | return (1); |
| 1106 | } |
| 1107 | } |
| 1108 | |
| 1109 | return (0); |
| 1110 | } |
| 1111 | |
| 1112 | int |
| 1113 | pfkey_ipsec_establish(int action, struct ipsec_rule *r) |
| 1114 | { |
| 1115 | int ret; |
| 1116 | u_int8_t satype, satype2, direction; |
| 1117 | |
| 1118 | if (r->type == RULE_FLOW0x01) { |
| 1119 | switch (r->satype) { |
| 1120 | case IPSEC_ESP: |
| 1121 | satype = SADB_SATYPE_ESP2; |
| 1122 | break; |
| 1123 | case IPSEC_AH: |
| 1124 | satype = SADB_SATYPE_AH1; |
| 1125 | break; |
| 1126 | case IPSEC_IPCOMP: |
| 1127 | satype = SADB_X_SATYPE_IPCOMP9; |
| 1128 | break; |
| 1129 | case IPSEC_IPIP: |
| 1130 | satype = SADB_X_SATYPE_IPIP7; |
| 1131 | break; |
| 1132 | default: |
| 1133 | return -1; |
| 1134 | } |
| 1135 | |
| 1136 | switch (r->direction) { |
| 1137 | case IPSEC_IN: |
| 1138 | direction = IPSP_DIRECTION_IN0x1; |
| 1139 | break; |
| 1140 | case IPSEC_OUT: |
| 1141 | direction = IPSP_DIRECTION_OUT0x2; |
| 1142 | break; |
| 1143 | default: |
| 1144 | return -1; |
| 1145 | } |
| 1146 | |
| 1147 | switch (action) { |
| 1148 | case ACTION_ADD: |
| 1149 | ret = pfkey_flow(fd, satype, SADB_X_ADDFLOW12, direction, |
| 1150 | r->proto, r->src, r->sport, r->dst, r->dport, |
| 1151 | r->local, r->peer, r->auth, r->flowtype); |
| 1152 | break; |
| 1153 | case ACTION_DELETE: |
| 1154 | /* No peer for flow deletion. */ |
| 1155 | ret = pfkey_flow(fd, satype, SADB_X_DELFLOW13, direction, |
| 1156 | r->proto, r->src, r->sport, r->dst, r->dport, |
| 1157 | NULL((void *)0), NULL((void *)0), NULL((void *)0), r->flowtype); |
| 1158 | break; |
| 1159 | default: |
| 1160 | return -1; |
| 1161 | } |
| 1162 | } else if (r->type == RULE_SA0x02) { |
| 1163 | switch (r->satype) { |
| 1164 | case IPSEC_AH: |
| 1165 | satype = SADB_SATYPE_AH1; |
| 1166 | break; |
| 1167 | case IPSEC_ESP: |
| 1168 | satype = SADB_SATYPE_ESP2; |
| 1169 | break; |
| 1170 | case IPSEC_IPCOMP: |
| 1171 | satype = SADB_X_SATYPE_IPCOMP9; |
| 1172 | break; |
| 1173 | case IPSEC_TCPMD5: |
| 1174 | satype = SADB_X_SATYPE_TCPSIGNATURE8; |
| 1175 | break; |
| 1176 | case IPSEC_IPIP: |
| 1177 | satype = SADB_X_SATYPE_IPIP7; |
| 1178 | break; |
| 1179 | default: |
| 1180 | return -1; |
| 1181 | } |
| 1182 | switch (action) { |
| 1183 | case ACTION_ADD: |
| 1184 | ret = pfkey_sa(fd, satype, SADB_ADD3, r->spi, |
| 1185 | r->src, r->dst, r->udpencap, r->udpdport, |
| 1186 | r->xfs, r->authkey, r->enckey, r->tmode); |
| 1187 | break; |
| 1188 | case ACTION_DELETE: |
| 1189 | ret = pfkey_sa(fd, satype, SADB_DELETE4, r->spi, |
| 1190 | r->src, r->dst, 0, 0, r->xfs, NULL((void *)0), NULL((void *)0), r->tmode); |
| 1191 | break; |
| 1192 | default: |
| 1193 | return -1; |
| 1194 | } |
| 1195 | } else if (r->type == RULE_BUNDLE0x08) { |
| 1196 | switch (r->satype) { |
| 1197 | case IPSEC_AH: |
| 1198 | satype = SADB_SATYPE_AH1; |
| 1199 | break; |
| 1200 | case IPSEC_ESP: |
| 1201 | satype = SADB_SATYPE_ESP2; |
| 1202 | break; |
| 1203 | case IPSEC_IPCOMP: |
| 1204 | satype = SADB_X_SATYPE_IPCOMP9; |
| 1205 | break; |
| 1206 | case IPSEC_TCPMD5: |
| 1207 | satype = SADB_X_SATYPE_TCPSIGNATURE8; |
| 1208 | break; |
| 1209 | case IPSEC_IPIP: |
| 1210 | satype = SADB_X_SATYPE_IPIP7; |
| 1211 | break; |
| 1212 | default: |
| 1213 | return -1; |
| 1214 | } |
| 1215 | switch (r->proto2) { |
| 1216 | case IPSEC_AH: |
| 1217 | satype2 = SADB_SATYPE_AH1; |
| 1218 | break; |
| 1219 | case IPSEC_ESP: |
| 1220 | satype2 = SADB_SATYPE_ESP2; |
| 1221 | break; |
| 1222 | case IPSEC_IPCOMP: |
| 1223 | satype2 = SADB_X_SATYPE_IPCOMP9; |
| 1224 | break; |
| 1225 | case IPSEC_TCPMD5: |
| 1226 | satype2 = SADB_X_SATYPE_TCPSIGNATURE8; |
| 1227 | break; |
| 1228 | case IPSEC_IPIP: |
| 1229 | satype2 = SADB_X_SATYPE_IPIP7; |
| 1230 | break; |
| 1231 | default: |
| 1232 | return -1; |
| 1233 | } |
| 1234 | switch (action) { |
| 1235 | case ACTION_ADD: |
| 1236 | ret = pfkey_sabundle(fd, satype, satype2, |
| 1237 | SADB_X_GRPSPIS14, r->dst, r->spi, r->dst2, r->spi2); |
| 1238 | break; |
| 1239 | case ACTION_DELETE: |
| 1240 | return 0; |
| 1241 | default: |
| 1242 | return -1; |
| 1243 | } |
| 1244 | } else |
| 1245 | return -1; |
| 1246 | |
| 1247 | if (ret < 0) |
| 1248 | return -1; |
| 1249 | if (pfkey_reply(fd, NULL((void *)0), NULL((void *)0)) < 0) |
| 1250 | return -1; |
| 1251 | |
| 1252 | return 0; |
| 1253 | } |
| 1254 | |
| 1255 | int |
| 1256 | pfkey_ipsec_flush(void) |
| 1257 | { |
| 1258 | struct sadb_msg smsg; |
| 1259 | struct iovec iov[IOV_CNT20]; |
| 1260 | ssize_t n; |
| 1261 | int iov_cnt, len; |
| 1262 | |
| 1263 | bzero(&smsg, sizeof(smsg)); |
| 1264 | smsg.sadb_msg_version = PF_KEY_V22; |
| 1265 | smsg.sadb_msg_seq = sadb_msg_seq++; |
| 1266 | smsg.sadb_msg_pid = getpid(); |
| 1267 | smsg.sadb_msg_len = sizeof(smsg) / 8; |
| 1268 | smsg.sadb_msg_type = SADB_FLUSH9; |
| 1269 | smsg.sadb_msg_satype = SADB_SATYPE_UNSPEC0; |
| 1270 | |
| 1271 | iov_cnt = 0; |
| 1272 | |
| 1273 | iov[iov_cnt].iov_base = &smsg; |
| 1274 | iov[iov_cnt].iov_len = sizeof(smsg); |
| 1275 | iov_cnt++; |
| 1276 | |
| 1277 | len = smsg.sadb_msg_len * 8; |
| 1278 | if ((n = writev(fd, iov, iov_cnt)) == -1) { |
| 1279 | warn("writev failed"); |
| 1280 | return -1; |
| 1281 | } |
| 1282 | if (n != len) { |
| 1283 | warnx("short write"); |
| 1284 | return -1; |
| 1285 | } |
| 1286 | if (pfkey_reply(fd, NULL((void *)0), NULL((void *)0)) < 0) |
| 1287 | return -1; |
| 1288 | |
| 1289 | return 0; |
| 1290 | } |
| 1291 | |
| 1292 | static int |
| 1293 | pfkey_promisc(void) |
| 1294 | { |
| 1295 | struct sadb_msg msg; |
| 1296 | |
| 1297 | memset(&msg, 0, sizeof(msg)); |
| 1298 | msg.sadb_msg_version = PF_KEY_V22; |
| 1299 | msg.sadb_msg_seq = sadb_msg_seq++; |
| 1300 | msg.sadb_msg_pid = getpid(); |
| 1301 | msg.sadb_msg_len = sizeof(msg) / PFKEYV2_CHUNKsizeof(u_int64_t); |
| 1302 | msg.sadb_msg_type = SADB_X_PROMISC11; |
| 1303 | msg.sadb_msg_satype = 1; /* enable */ |
| 1304 | if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { |
| 1305 | warn("pfkey_promisc: write failed"); |
| 1306 | return -1; |
| 1307 | } |
| 1308 | if (pfkey_reply(fd, NULL((void *)0), NULL((void *)0)) < 0) |
| 1309 | return -1; |
| 1310 | return 0; |
| 1311 | } |
| 1312 | |
| 1313 | int |
| 1314 | pfkey_monitor(int opts) |
| 1315 | { |
| 1316 | struct pollfd pfd[1]; |
| 1317 | struct sadb_msg *msg; |
| 1318 | u_int8_t *data; |
| 1319 | ssize_t len; |
| 1320 | int n; |
| 1321 | |
| 1322 | if (pfkey_init() < 0) |
| 1323 | return -1; |
| 1324 | if (pfkey_promisc() < 0) |
| 1325 | return -1; |
| 1326 | |
| 1327 | pfd[0].fd = fd; |
| 1328 | pfd[0].events = POLLIN0x0001; |
| 1329 | for (;;) { |
| 1330 | if ((n = poll(pfd, 1, -1)) == -1) |
| 1331 | err(2, "poll"); |
| 1332 | if (n == 0) |
| 1333 | break; |
| 1334 | if ((pfd[0].revents & POLLIN0x0001) == 0) |
| 1335 | continue; |
| 1336 | if (pfkey_reply(fd, &data, &len) < 0) |
| 1337 | continue; |
| 1338 | msg = (struct sadb_msg *)data; |
| 1339 | if (msg->sadb_msg_type == SADB_X_PROMISC11) { |
| 1340 | /* remove extra header from promisc messages */ |
| 1341 | if ((msg->sadb_msg_len * PFKEYV2_CHUNKsizeof(u_int64_t)) >= |
| 1342 | 2 * sizeof(struct sadb_msg)) { |
| 1343 | msg++; |
| 1344 | } |
| 1345 | } |
| 1346 | pfkey_monitor_sa(msg, opts); |
| 1347 | if (opts & IPSECCTL_OPT_VERBOSE0x0010) |
| 1348 | pfkey_print_raw(data, len); |
| 1349 | freezero(data, len); |
| 1350 | } |
| 1351 | close(fd); |
| 1352 | return 0; |
| 1353 | } |
| 1354 | |
| 1355 | int |
| 1356 | pfkey_init(void) |
| 1357 | { |
| 1358 | if ((fd = socket(PF_KEY30, SOCK_RAW3, PF_KEY_V22)) == -1) |
| 1359 | err(1, "pfkey_init: failed to open PF_KEY socket"); |
| 1360 | |
| 1361 | return 0; |
| 1362 | } |