| File: | net/pfkeyv2.c |
| Warning: | line 2016, column 9 Although the value stored to 'rn' is used in the enclosing expression, the value is never actually read from 'rn' |
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| 1 | /* $OpenBSD: pfkeyv2.c,v 1.259 2023/10/11 22:13:16 tobhe Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * @(#)COPYRIGHT 1.1 (NRL) 17 January 1995 |
| 5 | * |
| 6 | * NRL grants permission for redistribution and use in source and binary |
| 7 | * forms, with or without modification, of the software and documentation |
| 8 | * created at NRL provided that the following conditions are met: |
| 9 | * |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgements: |
| 17 | * This product includes software developed by the University of |
| 18 | * California, Berkeley and its contributors. |
| 19 | * This product includes software developed at the Information |
| 20 | * Technology Division, US Naval Research Laboratory. |
| 21 | * 4. Neither the name of the NRL nor the names of its contributors |
| 22 | * may be used to endorse or promote products derived from this software |
| 23 | * without specific prior written permission. |
| 24 | * |
| 25 | * THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL AND CONTRIBUTORS ``AS |
| 26 | * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| 28 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NRL OR |
| 29 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 30 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 31 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 32 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 36 | * |
| 37 | * The views and conclusions contained in the software and documentation |
| 38 | * are those of the authors and should not be interpreted as representing |
| 39 | * official policies, either expressed or implied, of the US Naval |
| 40 | * Research Laboratory (NRL). |
| 41 | */ |
| 42 | |
| 43 | /* |
| 44 | * Copyright (c) 1995, 1996, 1997, 1998, 1999 Craig Metz. All rights reserved. |
| 45 | * |
| 46 | * Redistribution and use in source and binary forms, with or without |
| 47 | * modification, are permitted provided that the following conditions |
| 48 | * are met: |
| 49 | * 1. Redistributions of source code must retain the above copyright |
| 50 | * notice, this list of conditions and the following disclaimer. |
| 51 | * 2. Redistributions in binary form must reproduce the above copyright |
| 52 | * notice, this list of conditions and the following disclaimer in the |
| 53 | * documentation and/or other materials provided with the distribution. |
| 54 | * 3. Neither the name of the author nor the names of any contributors |
| 55 | * may be used to endorse or promote products derived from this software |
| 56 | * without specific prior written permission. |
| 57 | * |
| 58 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 59 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 60 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 61 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 62 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 63 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 64 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 65 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 66 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 67 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 68 | * SUCH DAMAGE. |
| 69 | */ |
| 70 | |
| 71 | #include "pf.h" |
| 72 | |
| 73 | #include <sys/param.h> |
| 74 | #include <sys/socket.h> |
| 75 | #include <sys/socketvar.h> |
| 76 | #include <sys/protosw.h> |
| 77 | #include <sys/domain.h> |
| 78 | #include <sys/systm.h> |
| 79 | #include <sys/mbuf.h> |
| 80 | #include <sys/kernel.h> |
| 81 | #include <sys/proc.h> |
| 82 | #include <sys/pool.h> |
| 83 | #include <sys/mutex.h> |
| 84 | |
| 85 | #include <net/route.h> |
| 86 | #include <netinet/ip_ipsp.h> |
| 87 | #include <net/pfkeyv2.h> |
| 88 | #include <net/radix.h> |
| 89 | #include <netinet/ip_ah.h> |
| 90 | #include <netinet/ip_esp.h> |
| 91 | #include <netinet/ip_ipcomp.h> |
| 92 | #include <crypto/blf.h> |
| 93 | |
| 94 | #if NPF1 > 0 |
| 95 | #include <net/if.h> |
| 96 | #include <net/pfvar.h> |
| 97 | #endif |
| 98 | |
| 99 | #define PFKEYSNDQ8192 8192 |
| 100 | #define PFKEYRCVQ8192 8192 |
| 101 | |
| 102 | static const struct sadb_alg ealgs[] = { |
| 103 | { SADB_EALG_NULL11, 0, 0, 0 }, |
| 104 | { SADB_EALG_3DESCBC3, 64, 192, 192 }, |
| 105 | { SADB_X_EALG_BLF7, 64, 40, BLF_MAXKEYLEN((16 -2)*4) * 8}, |
| 106 | { SADB_X_EALG_CAST6, 64, 40, 128}, |
| 107 | { SADB_X_EALG_AES12, 128, 128, 256}, |
| 108 | { SADB_X_EALG_AESCTR13, 128, 128 + 32, 256 + 32} |
| 109 | }; |
| 110 | |
| 111 | static const struct sadb_alg aalgs[] = { |
| 112 | { SADB_AALG_SHA1HMAC3, 0, 160, 160 }, |
| 113 | { SADB_AALG_MD5HMAC2, 0, 128, 128 }, |
| 114 | { SADB_X_AALG_RIPEMD160HMAC8, 0, 160, 160 }, |
| 115 | { SADB_X_AALG_SHA2_2565, 0, 256, 256 }, |
| 116 | { SADB_X_AALG_SHA2_3846, 0, 384, 384 }, |
| 117 | { SADB_X_AALG_SHA2_5127, 0, 512, 512 } |
| 118 | }; |
| 119 | |
| 120 | static const struct sadb_alg calgs[] = { |
| 121 | { SADB_X_CALG_DEFLATE2, 0, 0, 0} |
| 122 | }; |
| 123 | |
| 124 | struct pool pkpcb_pool; |
| 125 | #define PFKEY_MSG_MAXSZ4096 4096 |
| 126 | const struct sockaddr pfkey_addr = { 2, PF_KEY30, }; |
| 127 | const struct domain pfkeydomain; |
| 128 | |
| 129 | /* |
| 130 | * pfkey PCB |
| 131 | * |
| 132 | * Locks used to protect struct members in this file: |
| 133 | * I immutable after creation |
| 134 | * a atomic operations |
| 135 | * l pkptable's lock |
| 136 | * s socket lock |
| 137 | */ |
| 138 | struct pkpcb { |
| 139 | struct socket *kcb_socket; /* [I] associated socket */ |
| 140 | |
| 141 | SRPL_ENTRY(pkpcb)struct { struct srp se_next; } kcb_list; /* [l] */ |
| 142 | struct refcnt kcb_refcnt; /* [a] */ |
| 143 | int kcb_flags; /* [s] */ |
| 144 | uint32_t kcb_reg; /* [s] Inc if SATYPE_MAX > 31 */ |
| 145 | uint32_t kcb_pid; /* [I] */ |
| 146 | unsigned int kcb_rdomain; /* [I] routing domain */ |
| 147 | }; |
| 148 | #define sotokeycb(so)((struct pkpcb *)(so)->so_pcb) ((struct pkpcb *)(so)->so_pcb) |
| 149 | #define keylock(kp)solock((kp)->kcb_socket) solock((kp)->kcb_socket) |
| 150 | #define keyunlock(kp)sounlock((kp)->kcb_socket) sounlock((kp)->kcb_socket) |
| 151 | |
| 152 | |
| 153 | struct dump_state { |
| 154 | struct sadb_msg *sadb_msg; |
| 155 | struct socket *socket; |
| 156 | }; |
| 157 | |
| 158 | struct pkptable { |
| 159 | SRPL_HEAD(, pkpcb)struct srpl pkp_list; |
| 160 | struct srpl_rc pkp_rc; |
| 161 | struct rwlock pkp_lk; |
| 162 | }; |
| 163 | |
| 164 | struct pkptable pkptable; |
| 165 | struct mutex pfkeyv2_mtx = MUTEX_INITIALIZER(IPL_MPFLOOR){ ((void *)0), ((((0x9)) > 0x0 && ((0x9)) < 0x9 ) ? 0x9 : ((0x9))), 0x0 }; |
| 166 | static uint32_t pfkeyv2_seq = 1; |
| 167 | static int nregistered = 0; |
| 168 | static int npromisc = 0; |
| 169 | |
| 170 | void pfkey_init(void); |
| 171 | |
| 172 | int pfkeyv2_attach(struct socket *, int, int); |
| 173 | int pfkeyv2_detach(struct socket *); |
| 174 | int pfkeyv2_disconnect(struct socket *); |
| 175 | int pfkeyv2_shutdown(struct socket *); |
| 176 | int pfkeyv2_send(struct socket *, struct mbuf *, struct mbuf *, |
| 177 | struct mbuf *); |
| 178 | int pfkeyv2_sockaddr(struct socket *, struct mbuf *); |
| 179 | int pfkeyv2_peeraddr(struct socket *, struct mbuf *); |
| 180 | int pfkeyv2_output(struct mbuf *, struct socket *); |
| 181 | int pfkey_sendup(struct pkpcb *, struct mbuf *, int); |
| 182 | int pfkeyv2_sa_flush(struct tdb *, void *, int); |
| 183 | int pfkeyv2_policy_flush(struct ipsec_policy *, void *, unsigned int); |
| 184 | int pfkeyv2_sysctl_policydumper(struct ipsec_policy *, void *, unsigned int); |
| 185 | |
| 186 | void keycb_ref(void *, void *); |
| 187 | void keycb_unref(void *, void *); |
| 188 | |
| 189 | /* |
| 190 | * Wrapper around m_devget(); copy data from contiguous buffer to mbuf |
| 191 | * chain. |
| 192 | */ |
| 193 | int |
| 194 | pfdatatopacket(void *data, int len, struct mbuf **packet) |
| 195 | { |
| 196 | if (!(*packet = m_devget(data, len, 0))) |
| 197 | return (ENOMEM12); |
| 198 | |
| 199 | /* Make sure, all data gets zeroized on free */ |
| 200 | (*packet)->m_flagsm_hdr.mh_flags |= M_ZEROIZE0x2000; |
| 201 | |
| 202 | return (0); |
| 203 | } |
| 204 | |
| 205 | const struct pr_usrreqs pfkeyv2_usrreqs = { |
| 206 | .pru_attach = pfkeyv2_attach, |
| 207 | .pru_detach = pfkeyv2_detach, |
| 208 | .pru_disconnect = pfkeyv2_disconnect, |
| 209 | .pru_shutdown = pfkeyv2_shutdown, |
| 210 | .pru_send = pfkeyv2_send, |
| 211 | .pru_sockaddr = pfkeyv2_sockaddr, |
| 212 | .pru_peeraddr = pfkeyv2_peeraddr, |
| 213 | }; |
| 214 | |
| 215 | const struct protosw pfkeysw[] = { |
| 216 | { |
| 217 | .pr_type = SOCK_RAW3, |
| 218 | .pr_domain = &pfkeydomain, |
| 219 | .pr_protocol = PF_KEY_V22, |
| 220 | .pr_flags = PR_ATOMIC0x0001 | PR_ADDR0x0002, |
| 221 | .pr_usrreqs = &pfkeyv2_usrreqs, |
| 222 | .pr_sysctl = pfkeyv2_sysctl, |
| 223 | } |
| 224 | }; |
| 225 | |
| 226 | const struct domain pfkeydomain = { |
| 227 | .dom_family = PF_KEY30, |
| 228 | .dom_name = "PF_KEY", |
| 229 | .dom_init = pfkey_init, |
| 230 | .dom_protosw = pfkeysw, |
| 231 | .dom_protoswNPROTOSW = &pfkeysw[nitems(pfkeysw)(sizeof((pfkeysw)) / sizeof((pfkeysw)[0]))], |
| 232 | }; |
| 233 | |
| 234 | void |
| 235 | keycb_ref(void *null, void *v) |
| 236 | { |
| 237 | struct pkpcb *kp = v; |
| 238 | |
| 239 | refcnt_take(&kp->kcb_refcnt); |
| 240 | } |
| 241 | |
| 242 | void |
| 243 | keycb_unref(void *null, void *v) |
| 244 | { |
| 245 | struct pkpcb *kp = v; |
| 246 | |
| 247 | refcnt_rele_wake(&kp->kcb_refcnt); |
| 248 | } |
| 249 | |
| 250 | void |
| 251 | pfkey_init(void) |
| 252 | { |
| 253 | rn_init(sizeof(struct sockaddr_encap)); |
| 254 | srpl_rc_init(&pkptable.pkp_rc, keycb_ref, keycb_unref, NULL((void *)0)); |
| 255 | rw_init(&pkptable.pkp_lk, "pfkey")_rw_init_flags(&pkptable.pkp_lk, "pfkey", 0, ((void *)0)); |
| 256 | SRPL_INIT(&pkptable.pkp_list)srp_init(&(&pkptable.pkp_list)->sl_head); |
| 257 | pool_init(&pkpcb_pool, sizeof(struct pkpcb), 0, |
| 258 | IPL_SOFTNET0x2, PR_WAITOK0x0001, "pkpcb", NULL((void *)0)); |
| 259 | pool_init(&ipsec_policy_pool, sizeof(struct ipsec_policy), 0, |
| 260 | IPL_SOFTNET0x2, 0, "ipsec policy", NULL((void *)0)); |
| 261 | pool_init(&ipsec_acquire_pool, sizeof(struct ipsec_acquire), 0, |
| 262 | IPL_SOFTNET0x2, 0, "ipsec acquire", NULL((void *)0)); |
| 263 | } |
| 264 | |
| 265 | |
| 266 | /* |
| 267 | * Attach a new PF_KEYv2 socket. |
| 268 | */ |
| 269 | int |
| 270 | pfkeyv2_attach(struct socket *so, int proto, int wait) |
| 271 | { |
| 272 | struct pkpcb *kp; |
| 273 | int error; |
| 274 | |
| 275 | if ((so->so_state & SS_PRIV0x080) == 0) |
| 276 | return EACCES13; |
| 277 | |
| 278 | error = soreserve(so, PFKEYSNDQ8192, PFKEYRCVQ8192); |
| 279 | if (error) |
| 280 | return (error); |
| 281 | |
| 282 | kp = pool_get(&pkpcb_pool, (wait == M_WAIT0x0001 ? PR_WAITOK0x0001 : PR_NOWAIT0x0002) | |
| 283 | PR_ZERO0x0008); |
| 284 | if (kp == NULL((void *)0)) |
| 285 | return (ENOBUFS55); |
| 286 | so->so_pcb = kp; |
| 287 | refcnt_init(&kp->kcb_refcnt); |
| 288 | kp->kcb_socket = so; |
| 289 | kp->kcb_pid = curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid; |
| 290 | kp->kcb_rdomain = rtable_l2(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_rtableid); |
| 291 | |
| 292 | so->so_options |= SO_USELOOPBACK0x0040; |
| 293 | soisconnected(so); |
| 294 | |
| 295 | rw_enter(&pkptable.pkp_lk, RW_WRITE0x0001UL); |
| 296 | SRPL_INSERT_HEAD_LOCKED(&pkptable.pkp_rc, &pkptable.pkp_list, kp, kcb_list)do { void *head; srp_init(&(kp)->kcb_list.se_next); head = srp_get_locked(&(&pkptable.pkp_list)->sl_head); if (head != ((void *)0)) { (&pkptable.pkp_rc)->srpl_ref (&(&pkptable.pkp_rc)->srpl_gc.srp_gc_cookie, head) ; srp_update_locked(&(&pkptable.pkp_rc)->srpl_gc, & (kp)->kcb_list.se_next, head); } (&pkptable.pkp_rc)-> srpl_ref(&(&pkptable.pkp_rc)->srpl_gc.srp_gc_cookie , kp); srp_update_locked(&(&pkptable.pkp_rc)->srpl_gc , &(&pkptable.pkp_list)->sl_head, (kp)); } while ( 0); |
| 297 | rw_exit(&pkptable.pkp_lk); |
| 298 | |
| 299 | return (0); |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * Close a PF_KEYv2 socket. |
| 304 | */ |
| 305 | int |
| 306 | pfkeyv2_detach(struct socket *so) |
| 307 | { |
| 308 | struct pkpcb *kp; |
| 309 | |
| 310 | soassertlocked(so); |
| 311 | |
| 312 | kp = sotokeycb(so)((struct pkpcb *)(so)->so_pcb); |
| 313 | if (kp == NULL((void *)0)) |
| 314 | return ENOTCONN57; |
| 315 | |
| 316 | if (kp->kcb_flags & |
| 317 | (PFKEYV2_SOCKETFLAGS_REGISTERED1|PFKEYV2_SOCKETFLAGS_PROMISC2)) { |
| 318 | mtx_enter(&pfkeyv2_mtx); |
| 319 | if (kp->kcb_flags & PFKEYV2_SOCKETFLAGS_REGISTERED1) |
| 320 | nregistered--; |
| 321 | |
| 322 | if (kp->kcb_flags & PFKEYV2_SOCKETFLAGS_PROMISC2) |
| 323 | npromisc--; |
| 324 | mtx_leave(&pfkeyv2_mtx); |
| 325 | } |
| 326 | |
| 327 | rw_enter(&pkptable.pkp_lk, RW_WRITE0x0001UL); |
| 328 | SRPL_REMOVE_LOCKED(&pkptable.pkp_rc, &pkptable.pkp_list, kp, pkpcb,do { struct srp *ref; struct pkpcb *c, *n; ref = &(&pkptable .pkp_list)->sl_head; while ((c = srp_get_locked(ref)) != ( kp)) ref = &c->kcb_list.se_next; n = srp_get_locked(& (c)->kcb_list.se_next); if (n != ((void *)0)) (&pkptable .pkp_rc)->srpl_ref(&(&pkptable.pkp_rc)->srpl_gc .srp_gc_cookie, n); srp_update_locked(&(&pkptable.pkp_rc )->srpl_gc, ref, n); srp_update_locked(&(&pkptable .pkp_rc)->srpl_gc, &c->kcb_list.se_next, ((void *)0 )); } while (0) |
| 329 | kcb_list)do { struct srp *ref; struct pkpcb *c, *n; ref = &(&pkptable .pkp_list)->sl_head; while ((c = srp_get_locked(ref)) != ( kp)) ref = &c->kcb_list.se_next; n = srp_get_locked(& (c)->kcb_list.se_next); if (n != ((void *)0)) (&pkptable .pkp_rc)->srpl_ref(&(&pkptable.pkp_rc)->srpl_gc .srp_gc_cookie, n); srp_update_locked(&(&pkptable.pkp_rc )->srpl_gc, ref, n); srp_update_locked(&(&pkptable .pkp_rc)->srpl_gc, &c->kcb_list.se_next, ((void *)0 )); } while (0); |
| 330 | rw_exit(&pkptable.pkp_lk); |
| 331 | |
| 332 | sounlock(so); |
| 333 | /* wait for all references to drop */ |
| 334 | refcnt_finalize(&kp->kcb_refcnt, "pfkeyrefs"); |
| 335 | solock(so); |
| 336 | |
| 337 | so->so_pcb = NULL((void *)0); |
| 338 | KASSERT((so->so_state & SS_NOFDREF) == 0)(((so->so_state & 0x001) == 0) ? (void)0 : __assert("diagnostic " , "/usr/src/sys/net/pfkeyv2.c", 338, "(so->so_state & SS_NOFDREF) == 0" )); |
| 339 | pool_put(&pkpcb_pool, kp); |
| 340 | |
| 341 | return (0); |
| 342 | } |
| 343 | |
| 344 | int |
| 345 | pfkeyv2_disconnect(struct socket *so) |
| 346 | { |
| 347 | soisdisconnected(so); |
| 348 | return (0); |
| 349 | } |
| 350 | |
| 351 | int |
| 352 | pfkeyv2_shutdown(struct socket *so) |
| 353 | { |
| 354 | socantsendmore(so); |
| 355 | return (0); |
| 356 | } |
| 357 | |
| 358 | int |
| 359 | pfkeyv2_send(struct socket *so, struct mbuf *m, struct mbuf *nam, |
| 360 | struct mbuf *control) |
| 361 | { |
| 362 | int error; |
| 363 | |
| 364 | soassertlocked(so); |
| 365 | |
| 366 | if (control && control->m_lenm_hdr.mh_len) { |
| 367 | error = EOPNOTSUPP45; |
| 368 | goto out; |
| 369 | } |
| 370 | |
| 371 | if (nam) { |
| 372 | error = EISCONN56; |
| 373 | goto out; |
| 374 | } |
| 375 | |
| 376 | error = pfkeyv2_output(m, so); |
| 377 | m = NULL((void *)0); |
| 378 | |
| 379 | out: |
| 380 | m_freem(control); |
| 381 | m_freem(m); |
| 382 | |
| 383 | return (error); |
| 384 | } |
| 385 | |
| 386 | int |
| 387 | pfkeyv2_sockaddr(struct socket *so, struct mbuf *nam) |
| 388 | { |
| 389 | return (EINVAL22); |
| 390 | } |
| 391 | |
| 392 | int |
| 393 | pfkeyv2_peeraddr(struct socket *so, struct mbuf *nam) |
| 394 | { |
| 395 | /* minimal support, just implement a fake peer address */ |
| 396 | bcopy(&pfkey_addr, mtod(nam, caddr_t)((caddr_t)((nam)->m_hdr.mh_data)), pfkey_addr.sa_len); |
| 397 | nam->m_lenm_hdr.mh_len = pfkey_addr.sa_len; |
| 398 | return (0); |
| 399 | } |
| 400 | |
| 401 | int |
| 402 | pfkeyv2_output(struct mbuf *mbuf, struct socket *so) |
| 403 | { |
| 404 | void *message; |
| 405 | int error = 0; |
| 406 | |
| 407 | #ifdef DIAGNOSTIC1 |
| 408 | if (!mbuf || !(mbuf->m_flagsm_hdr.mh_flags & M_PKTHDR0x0002)) { |
| 409 | error = EINVAL22; |
| 410 | goto ret; |
| 411 | } |
| 412 | #endif /* DIAGNOSTIC */ |
| 413 | |
| 414 | if (mbuf->m_pkthdrM_dat.MH.MH_pkthdr.len > PFKEY_MSG_MAXSZ4096) { |
| 415 | error = EMSGSIZE40; |
| 416 | goto ret; |
| 417 | } |
| 418 | |
| 419 | if (!(message = malloc((unsigned long) mbuf->m_pkthdrM_dat.MH.MH_pkthdr.len, |
| 420 | M_PFKEY74, M_DONTWAIT0x0002))) { |
| 421 | error = ENOMEM12; |
| 422 | goto ret; |
| 423 | } |
| 424 | |
| 425 | m_copydata(mbuf, 0, mbuf->m_pkthdrM_dat.MH.MH_pkthdr.len, message); |
| 426 | |
| 427 | /* |
| 428 | * The socket can't be closed concurrently because the file |
| 429 | * descriptor reference is still held. |
| 430 | */ |
| 431 | |
| 432 | sounlock(so); |
| 433 | error = pfkeyv2_dosend(so, message, mbuf->m_pkthdrM_dat.MH.MH_pkthdr.len); |
| 434 | solock(so); |
| 435 | |
| 436 | ret: |
| 437 | m_freem(mbuf); |
| 438 | return (error); |
| 439 | } |
| 440 | |
| 441 | int |
| 442 | pfkey_sendup(struct pkpcb *kp, struct mbuf *m0, int more) |
| 443 | { |
| 444 | struct socket *so = kp->kcb_socket; |
| 445 | struct mbuf *m; |
| 446 | |
| 447 | soassertlocked(so); |
| 448 | |
| 449 | if (more) { |
| 450 | if (!(m = m_dup_pkt(m0, 0, M_DONTWAIT0x0002))) |
| 451 | return (ENOMEM12); |
| 452 | } else |
| 453 | m = m0; |
| 454 | |
| 455 | if (!sbappendaddr(so, &so->so_rcv, &pfkey_addr, m, NULL((void *)0))) { |
| 456 | m_freem(m); |
| 457 | return (ENOBUFS55); |
| 458 | } |
| 459 | |
| 460 | sorwakeup(so); |
| 461 | return (0); |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Send a PFKEYv2 message, possibly to many receivers, based on the |
| 466 | * satype of the socket (which is set by the REGISTER message), and the |
| 467 | * third argument. |
| 468 | */ |
| 469 | int |
| 470 | pfkeyv2_sendmessage(void **headers, int mode, struct socket *so, |
| 471 | u_int8_t satype, int count, u_int rdomain) |
| 472 | { |
| 473 | int i, j, rval; |
| 474 | void *p, *buffer = NULL((void *)0); |
| 475 | struct mbuf *packet; |
| 476 | struct pkpcb *kp; |
| 477 | struct sadb_msg *smsg; |
| 478 | struct srp_ref sr; |
| 479 | |
| 480 | /* Find out how much space we'll need... */ |
| 481 | j = sizeof(struct sadb_msg); |
| 482 | |
| 483 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 484 | if (headers[i]) |
| 485 | j += ((struct sadb_ext *)headers[i])->sadb_ext_len * |
| 486 | sizeof(uint64_t); |
| 487 | |
| 488 | /* ...and allocate it */ |
| 489 | if (!(buffer = malloc(j + sizeof(struct sadb_msg), M_PFKEY74, |
| 490 | M_NOWAIT0x0002))) { |
| 491 | rval = ENOMEM12; |
| 492 | goto ret; |
| 493 | } |
| 494 | |
| 495 | p = buffer + sizeof(struct sadb_msg); |
| 496 | bcopy(headers[0], p, sizeof(struct sadb_msg)); |
| 497 | ((struct sadb_msg *) p)->sadb_msg_len = j / sizeof(uint64_t); |
| 498 | p += sizeof(struct sadb_msg); |
| 499 | |
| 500 | /* Copy payloads in the packet */ |
| 501 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 502 | if (headers[i]) { |
| 503 | ((struct sadb_ext *) headers[i])->sadb_ext_type = i; |
| 504 | bcopy(headers[i], p, EXTLEN(headers[i])(((struct sadb_ext *)(headers[i]))->sadb_ext_len * sizeof( uint64_t))); |
| 505 | p += EXTLEN(headers[i])(((struct sadb_ext *)(headers[i]))->sadb_ext_len * sizeof( uint64_t)); |
| 506 | } |
| 507 | |
| 508 | if ((rval = pfdatatopacket(buffer + sizeof(struct sadb_msg), |
| 509 | j, &packet)) != 0) |
| 510 | goto ret; |
| 511 | |
| 512 | switch (mode) { |
| 513 | case PFKEYV2_SENDMESSAGE_UNICAST1: |
| 514 | /* |
| 515 | * Send message to the specified socket, plus all |
| 516 | * promiscuous listeners. |
| 517 | */ |
| 518 | solock(so); |
| 519 | pfkey_sendup(sotokeycb(so)((struct pkpcb *)(so)->so_pcb), packet, 0); |
| 520 | sounlock(so); |
| 521 | |
| 522 | /* |
| 523 | * Promiscuous messages contain the original message |
| 524 | * encapsulated in another sadb_msg header. |
| 525 | */ |
| 526 | bzero(buffer, sizeof(struct sadb_msg))__builtin_bzero((buffer), (sizeof(struct sadb_msg))); |
| 527 | smsg = (struct sadb_msg *) buffer; |
| 528 | smsg->sadb_msg_version = PF_KEY_V22; |
| 529 | smsg->sadb_msg_type = SADB_X_PROMISC11; |
| 530 | smsg->sadb_msg_len = (sizeof(struct sadb_msg) + j) / |
| 531 | sizeof(uint64_t); |
| 532 | smsg->sadb_msg_seq = 0; |
| 533 | |
| 534 | /* Copy to mbuf chain */ |
| 535 | if ((rval = pfdatatopacket(buffer, sizeof(struct sadb_msg) + j, |
| 536 | &packet)) != 0) |
| 537 | goto ret; |
| 538 | |
| 539 | /* |
| 540 | * Search for promiscuous listeners, skipping the |
| 541 | * original destination. |
| 542 | */ |
| 543 | SRPL_FOREACH(kp, &sr, &pkptable.pkp_list, kcb_list)for ((kp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (kp) != ((void *)0); (kp) = srp_follow((& sr), &(kp)->kcb_list.se_next)) { |
| 544 | if (kp->kcb_socket == so || kp->kcb_rdomain != rdomain) |
| 545 | continue; |
| 546 | |
| 547 | keylock(kp)solock((kp)->kcb_socket); |
| 548 | if (kp->kcb_flags & PFKEYV2_SOCKETFLAGS_PROMISC2) |
| 549 | pfkey_sendup(kp, packet, 1); |
| 550 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 551 | } |
| 552 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 553 | m_freem(packet); |
| 554 | break; |
| 555 | |
| 556 | case PFKEYV2_SENDMESSAGE_REGISTERED2: |
| 557 | /* |
| 558 | * Send the message to all registered sockets that match |
| 559 | * the specified satype (e.g., all IPSEC-ESP negotiators) |
| 560 | */ |
| 561 | SRPL_FOREACH(kp, &sr, &pkptable.pkp_list, kcb_list)for ((kp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (kp) != ((void *)0); (kp) = srp_follow((& sr), &(kp)->kcb_list.se_next)) { |
| 562 | if (kp->kcb_rdomain != rdomain) |
| 563 | continue; |
| 564 | |
| 565 | keylock(kp)solock((kp)->kcb_socket); |
| 566 | if (kp->kcb_flags & PFKEYV2_SOCKETFLAGS_REGISTERED1) { |
| 567 | if (!satype) { |
| 568 | /* Just send to everyone registered */ |
| 569 | pfkey_sendup(kp, packet, 1); |
| 570 | } else { |
| 571 | /* Check for specified satype */ |
| 572 | if ((1 << satype) & kp->kcb_reg) |
| 573 | pfkey_sendup(kp, packet, 1); |
| 574 | } |
| 575 | } |
| 576 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 577 | } |
| 578 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 579 | /* Free last/original copy of the packet */ |
| 580 | m_freem(packet); |
| 581 | |
| 582 | /* Encapsulate the original message "inside" an sadb_msg header */ |
| 583 | bzero(buffer, sizeof(struct sadb_msg))__builtin_bzero((buffer), (sizeof(struct sadb_msg))); |
| 584 | smsg = (struct sadb_msg *) buffer; |
| 585 | smsg->sadb_msg_version = PF_KEY_V22; |
| 586 | smsg->sadb_msg_type = SADB_X_PROMISC11; |
| 587 | smsg->sadb_msg_len = (sizeof(struct sadb_msg) + j) / |
| 588 | sizeof(uint64_t); |
| 589 | smsg->sadb_msg_seq = 0; |
| 590 | |
| 591 | /* Convert to mbuf chain */ |
| 592 | if ((rval = pfdatatopacket(buffer, sizeof(struct sadb_msg) + j, |
| 593 | &packet)) != 0) |
| 594 | goto ret; |
| 595 | |
| 596 | /* Send to all registered promiscuous listeners */ |
| 597 | SRPL_FOREACH(kp, &sr, &pkptable.pkp_list, kcb_list)for ((kp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (kp) != ((void *)0); (kp) = srp_follow((& sr), &(kp)->kcb_list.se_next)) { |
| 598 | if (kp->kcb_rdomain != rdomain) |
| 599 | continue; |
| 600 | |
| 601 | keylock(kp)solock((kp)->kcb_socket); |
| 602 | if ((kp->kcb_flags & PFKEYV2_SOCKETFLAGS_PROMISC2) && |
| 603 | !(kp->kcb_flags & PFKEYV2_SOCKETFLAGS_REGISTERED1)) |
| 604 | pfkey_sendup(kp, packet, 1); |
| 605 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 606 | } |
| 607 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 608 | m_freem(packet); |
| 609 | break; |
| 610 | |
| 611 | case PFKEYV2_SENDMESSAGE_BROADCAST3: |
| 612 | /* Send message to all sockets */ |
| 613 | SRPL_FOREACH(kp, &sr, &pkptable.pkp_list, kcb_list)for ((kp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (kp) != ((void *)0); (kp) = srp_follow((& sr), &(kp)->kcb_list.se_next)) { |
| 614 | if (kp->kcb_rdomain != rdomain) |
| 615 | continue; |
| 616 | |
| 617 | keylock(kp)solock((kp)->kcb_socket); |
| 618 | pfkey_sendup(kp, packet, 1); |
| 619 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 620 | } |
| 621 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 622 | m_freem(packet); |
| 623 | break; |
| 624 | } |
| 625 | |
| 626 | ret: |
| 627 | if (buffer != NULL((void *)0)) { |
| 628 | explicit_bzero(buffer, j + sizeof(struct sadb_msg)); |
| 629 | free(buffer, M_PFKEY74, j + sizeof(struct sadb_msg)); |
| 630 | } |
| 631 | |
| 632 | return (rval); |
| 633 | } |
| 634 | |
| 635 | /* |
| 636 | * Get SPD information for an ACQUIRE. We setup the message such that |
| 637 | * the SRC/DST payloads are relative to us (regardless of whether the |
| 638 | * SPD rule was for incoming or outgoing packets). |
| 639 | */ |
| 640 | int |
| 641 | pfkeyv2_policy(struct ipsec_acquire *ipa, void **headers, void **buffer, |
| 642 | int *bufferlen) |
| 643 | { |
| 644 | union sockaddr_union sunion; |
| 645 | struct sadb_protocol *sp; |
| 646 | int rval, i, dir; |
| 647 | void *p; |
| 648 | |
| 649 | /* Find out how big a buffer we need */ |
| 650 | i = 4 * sizeof(struct sadb_address) + sizeof(struct sadb_protocol); |
| 651 | bzero(&sunion, sizeof(union sockaddr_union))__builtin_bzero((&sunion), (sizeof(union sockaddr_union)) ); |
| 652 | |
| 653 | switch (ipa->ipa_info.sen_type) { |
| 654 | case SENT_IP40x0001: |
| 655 | i += 4 * PADUP(sizeof(struct sockaddr_in))(((sizeof(struct sockaddr_in)) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 656 | sunion.sa.sa_family = AF_INET2; |
| 657 | sunion.sa.sa_len = sizeof(struct sockaddr_in); |
| 658 | dir = ipa->ipa_info.sen_directionSen.Sip4.Direction; |
| 659 | break; |
| 660 | |
| 661 | #ifdef INET61 |
| 662 | case SENT_IP60x0002: |
| 663 | i += 4 * PADUP(sizeof(struct sockaddr_in6))(((sizeof(struct sockaddr_in6)) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 664 | sunion.sa.sa_family = AF_INET624; |
| 665 | sunion.sa.sa_len = sizeof(struct sockaddr_in6); |
| 666 | dir = ipa->ipa_info.sen_ip6_directionSen.Sip6.Direction; |
| 667 | break; |
| 668 | #endif /* INET6 */ |
| 669 | |
| 670 | default: |
| 671 | return (EINVAL22); |
| 672 | } |
| 673 | |
| 674 | if (!(p = malloc(i, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 675 | rval = ENOMEM12; |
| 676 | goto ret; |
| 677 | } else { |
| 678 | *buffer = p; |
| 679 | *bufferlen = i; |
| 680 | } |
| 681 | |
| 682 | if (dir == IPSP_DIRECTION_OUT0x2) |
| 683 | headers[SADB_X_EXT_SRC_FLOW21] = p; |
| 684 | else |
| 685 | headers[SADB_X_EXT_DST_FLOW22] = p; |
| 686 | switch (sunion.sa.sa_family) { |
| 687 | case AF_INET2: |
| 688 | sunion.sin.sin_addr = ipa->ipa_info.sen_ip_srcSen.Sip4.Src; |
| 689 | sunion.sin.sin_port = ipa->ipa_info.sen_sportSen.Sip4.Sport; |
| 690 | break; |
| 691 | |
| 692 | #ifdef INET61 |
| 693 | case AF_INET624: |
| 694 | sunion.sin6.sin6_addr = ipa->ipa_info.sen_ip6_srcSen.Sip6.Src; |
| 695 | sunion.sin6.sin6_port = ipa->ipa_info.sen_ip6_sportSen.Sip6.Sport; |
| 696 | break; |
| 697 | #endif /* INET6 */ |
| 698 | } |
| 699 | export_address(&p, &sunion.sa); |
| 700 | |
| 701 | if (dir == IPSP_DIRECTION_OUT0x2) |
| 702 | headers[SADB_X_EXT_SRC_MASK17] = p; |
| 703 | else |
| 704 | headers[SADB_X_EXT_DST_MASK18] = p; |
| 705 | switch (sunion.sa.sa_family) { |
| 706 | case AF_INET2: |
| 707 | sunion.sin.sin_addr = ipa->ipa_mask.sen_ip_srcSen.Sip4.Src; |
| 708 | sunion.sin.sin_port = ipa->ipa_mask.sen_sportSen.Sip4.Sport; |
| 709 | break; |
| 710 | |
| 711 | #ifdef INET61 |
| 712 | case AF_INET624: |
| 713 | sunion.sin6.sin6_addr = ipa->ipa_mask.sen_ip6_srcSen.Sip6.Src; |
| 714 | sunion.sin6.sin6_port = ipa->ipa_mask.sen_ip6_sportSen.Sip6.Sport; |
| 715 | break; |
| 716 | #endif /* INET6 */ |
| 717 | } |
| 718 | export_address(&p, &sunion.sa); |
| 719 | |
| 720 | if (dir == IPSP_DIRECTION_OUT0x2) |
| 721 | headers[SADB_X_EXT_DST_FLOW22] = p; |
| 722 | else |
| 723 | headers[SADB_X_EXT_SRC_FLOW21] = p; |
| 724 | switch (sunion.sa.sa_family) { |
| 725 | case AF_INET2: |
| 726 | sunion.sin.sin_addr = ipa->ipa_info.sen_ip_dstSen.Sip4.Dst; |
| 727 | sunion.sin.sin_port = ipa->ipa_info.sen_dportSen.Sip4.Dport; |
| 728 | break; |
| 729 | |
| 730 | #ifdef INET61 |
| 731 | case AF_INET624: |
| 732 | sunion.sin6.sin6_addr = ipa->ipa_info.sen_ip6_dstSen.Sip6.Dst; |
| 733 | sunion.sin6.sin6_port = ipa->ipa_info.sen_ip6_dportSen.Sip6.Dport; |
| 734 | break; |
| 735 | #endif /* INET6 */ |
| 736 | } |
| 737 | export_address(&p, &sunion.sa); |
| 738 | |
| 739 | if (dir == IPSP_DIRECTION_OUT0x2) |
| 740 | headers[SADB_X_EXT_DST_MASK18] = p; |
| 741 | else |
| 742 | headers[SADB_X_EXT_SRC_MASK17] = p; |
| 743 | switch (sunion.sa.sa_family) { |
| 744 | case AF_INET2: |
| 745 | sunion.sin.sin_addr = ipa->ipa_mask.sen_ip_dstSen.Sip4.Dst; |
| 746 | sunion.sin.sin_port = ipa->ipa_mask.sen_dportSen.Sip4.Dport; |
| 747 | break; |
| 748 | |
| 749 | #ifdef INET61 |
| 750 | case AF_INET624: |
| 751 | sunion.sin6.sin6_addr = ipa->ipa_mask.sen_ip6_dstSen.Sip6.Dst; |
| 752 | sunion.sin6.sin6_port = ipa->ipa_mask.sen_ip6_dportSen.Sip6.Dport; |
| 753 | break; |
| 754 | #endif /* INET6 */ |
| 755 | } |
| 756 | export_address(&p, &sunion.sa); |
| 757 | |
| 758 | headers[SADB_X_EXT_FLOW_TYPE20] = p; |
| 759 | sp = p; |
| 760 | sp->sadb_protocol_len = sizeof(struct sadb_protocol) / |
| 761 | sizeof(u_int64_t); |
| 762 | switch (sunion.sa.sa_family) { |
| 763 | case AF_INET2: |
| 764 | if (ipa->ipa_mask.sen_protoSen.Sip4.Proto) |
| 765 | sp->sadb_protocol_proto = ipa->ipa_info.sen_protoSen.Sip4.Proto; |
| 766 | sp->sadb_protocol_direction = ipa->ipa_info.sen_directionSen.Sip4.Direction; |
| 767 | break; |
| 768 | |
| 769 | #ifdef INET61 |
| 770 | case AF_INET624: |
| 771 | if (ipa->ipa_mask.sen_ip6_protoSen.Sip6.Proto) |
| 772 | sp->sadb_protocol_proto = ipa->ipa_info.sen_ip6_protoSen.Sip6.Proto; |
| 773 | sp->sadb_protocol_direction = ipa->ipa_info.sen_ip6_directionSen.Sip6.Direction; |
| 774 | break; |
| 775 | #endif /* INET6 */ |
| 776 | } |
| 777 | |
| 778 | rval = 0; |
| 779 | |
| 780 | ret: |
| 781 | return (rval); |
| 782 | } |
| 783 | |
| 784 | /* |
| 785 | * Get all the information contained in an SA to a PFKEYV2 message. |
| 786 | */ |
| 787 | int |
| 788 | pfkeyv2_get(struct tdb *tdb, void **headers, void **buffer, int *lenp, |
| 789 | int *lenused) |
| 790 | { |
| 791 | int rval, i; |
| 792 | void *p; |
| 793 | |
| 794 | NET_ASSERT_LOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s != 0x0001UL && _s != 0x0002UL)) splassert_fail (0x0002UL, _s, __func__); } while (0); |
| 795 | |
| 796 | /* Find how much space we need */ |
| 797 | i = sizeof(struct sadb_sa) + sizeof(struct sadb_lifetime) + |
| 798 | sizeof(struct sadb_x_counter); |
| 799 | |
| 800 | if (tdb->tdb_soft_allocations || tdb->tdb_soft_bytes || |
| 801 | tdb->tdb_soft_timeout || tdb->tdb_soft_first_use) |
| 802 | i += sizeof(struct sadb_lifetime); |
| 803 | |
| 804 | if (tdb->tdb_exp_allocations || tdb->tdb_exp_bytes || |
| 805 | tdb->tdb_exp_timeout || tdb->tdb_exp_first_use) |
| 806 | i += sizeof(struct sadb_lifetime); |
| 807 | |
| 808 | if (tdb->tdb_last_used) |
| 809 | i += sizeof(struct sadb_lifetime); |
| 810 | |
| 811 | i += sizeof(struct sadb_address) + PADUP(tdb->tdb_src.sa.sa_len)(((tdb->tdb_src.sa.sa_len) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 812 | i += sizeof(struct sadb_address) + PADUP(tdb->tdb_dst.sa.sa_len)(((tdb->tdb_dst.sa.sa_len) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 813 | |
| 814 | if (tdb->tdb_ids) { |
| 815 | i += sizeof(struct sadb_ident) + PADUP(tdb->tdb_ids->id_local->len)(((tdb->tdb_ids->id_local->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 816 | i += sizeof(struct sadb_ident) + PADUP(tdb->tdb_ids->id_remote->len)(((tdb->tdb_ids->id_remote->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 817 | } |
| 818 | |
| 819 | if (tdb->tdb_amxkey) |
| 820 | i += sizeof(struct sadb_key) + PADUP(tdb->tdb_amxkeylen)(((tdb->tdb_amxkeylen) + sizeof(uint64_t) - 1) & ~(sizeof (uint64_t) - 1)); |
| 821 | |
| 822 | if (tdb->tdb_emxkey) |
| 823 | i += sizeof(struct sadb_key) + PADUP(tdb->tdb_emxkeylen)(((tdb->tdb_emxkeylen) + sizeof(uint64_t) - 1) & ~(sizeof (uint64_t) - 1)); |
| 824 | |
| 825 | if (tdb->tdb_filter.sen_type) { |
| 826 | i += 2 * sizeof(struct sadb_protocol); |
| 827 | |
| 828 | /* We'll need four of them: src, src mask, dst, dst mask. */ |
| 829 | switch (tdb->tdb_filter.sen_type) { |
| 830 | case SENT_IP40x0001: |
| 831 | i += 4 * PADUP(sizeof(struct sockaddr_in))(((sizeof(struct sockaddr_in)) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 832 | i += 4 * sizeof(struct sadb_address); |
| 833 | break; |
| 834 | #ifdef INET61 |
| 835 | case SENT_IP60x0002: |
| 836 | i += 4 * PADUP(sizeof(struct sockaddr_in6))(((sizeof(struct sockaddr_in6)) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 837 | i += 4 * sizeof(struct sadb_address); |
| 838 | break; |
| 839 | #endif /* INET6 */ |
| 840 | default: |
| 841 | rval = EINVAL22; |
| 842 | goto ret; |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | if (tdb->tdb_onext) { |
| 847 | i += sizeof(struct sadb_sa); |
| 848 | i += sizeof(struct sadb_address) + |
| 849 | PADUP(tdb->tdb_onext->tdb_dst.sa.sa_len)(((tdb->tdb_onext->tdb_dst.sa.sa_len) + sizeof(uint64_t ) - 1) & ~(sizeof(uint64_t) - 1)); |
| 850 | i += sizeof(struct sadb_protocol); |
| 851 | } |
| 852 | |
| 853 | if (tdb->tdb_udpencap_port) |
| 854 | i += sizeof(struct sadb_x_udpencap); |
| 855 | |
| 856 | i += sizeof(struct sadb_x_replay); |
| 857 | |
| 858 | if (tdb->tdb_mtu > 0) |
| 859 | i+= sizeof(struct sadb_x_mtu); |
| 860 | |
| 861 | if (tdb->tdb_rdomain != tdb->tdb_rdomain_post) |
| 862 | i += sizeof(struct sadb_x_rdomain); |
| 863 | |
| 864 | #if NPF1 > 0 |
| 865 | if (tdb->tdb_tag) |
| 866 | i += sizeof(struct sadb_x_tag) + PADUP(PF_TAG_NAME_SIZE)(((64) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 867 | if (tdb->tdb_tap) |
| 868 | i += sizeof(struct sadb_x_tap); |
| 869 | #endif |
| 870 | |
| 871 | if (ISSET(tdb->tdb_flags, TDBF_IFACE)((tdb->tdb_flags) & (0x400000))) |
| 872 | i += sizeof(struct sadb_x_iface); |
| 873 | |
| 874 | if (lenp) |
| 875 | *lenp = i; |
| 876 | |
| 877 | if (buffer == NULL((void *)0)) { |
| 878 | rval = 0; |
| 879 | goto ret; |
| 880 | } |
| 881 | |
| 882 | if (!(p = malloc(i, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 883 | rval = ENOMEM12; |
| 884 | goto ret; |
| 885 | } else |
| 886 | *buffer = p; |
| 887 | |
| 888 | headers[SADB_EXT_SA1] = p; |
| 889 | |
| 890 | export_sa(&p, tdb); /* Export SA information (mostly flags) */ |
| 891 | |
| 892 | /* Export lifetimes where applicable */ |
| 893 | headers[SADB_EXT_LIFETIME_CURRENT2] = p; |
| 894 | export_lifetime(&p, tdb, PFKEYV2_LIFETIME_CURRENT2); |
| 895 | |
| 896 | if (tdb->tdb_soft_allocations || tdb->tdb_soft_bytes || |
| 897 | tdb->tdb_soft_first_use || tdb->tdb_soft_timeout) { |
| 898 | headers[SADB_EXT_LIFETIME_SOFT4] = p; |
| 899 | export_lifetime(&p, tdb, PFKEYV2_LIFETIME_SOFT1); |
| 900 | } |
| 901 | |
| 902 | if (tdb->tdb_exp_allocations || tdb->tdb_exp_bytes || |
| 903 | tdb->tdb_exp_first_use || tdb->tdb_exp_timeout) { |
| 904 | headers[SADB_EXT_LIFETIME_HARD3] = p; |
| 905 | export_lifetime(&p, tdb, PFKEYV2_LIFETIME_HARD0); |
| 906 | } |
| 907 | |
| 908 | if (tdb->tdb_last_used) { |
| 909 | headers[SADB_X_EXT_LIFETIME_LASTUSE32] = p; |
| 910 | export_lifetime(&p, tdb, PFKEYV2_LIFETIME_LASTUSE3); |
| 911 | } |
| 912 | |
| 913 | /* Export TDB source address */ |
| 914 | headers[SADB_EXT_ADDRESS_SRC5] = p; |
| 915 | export_address(&p, &tdb->tdb_src.sa); |
| 916 | |
| 917 | /* Export TDB destination address */ |
| 918 | headers[SADB_EXT_ADDRESS_DST6] = p; |
| 919 | export_address(&p, &tdb->tdb_dst.sa); |
| 920 | |
| 921 | /* Export source/destination identities, if present */ |
| 922 | if (tdb->tdb_ids) |
| 923 | export_identities(&p, tdb->tdb_ids, tdb->tdb_ids_swapped, headers); |
| 924 | |
| 925 | /* Export authentication key, if present */ |
| 926 | if (tdb->tdb_amxkey) { |
| 927 | headers[SADB_EXT_KEY_AUTH8] = p; |
| 928 | export_key(&p, tdb, PFKEYV2_AUTHENTICATION_KEY1); |
| 929 | } |
| 930 | |
| 931 | /* Export encryption key, if present */ |
| 932 | if (tdb->tdb_emxkey) { |
| 933 | headers[SADB_EXT_KEY_ENCRYPT9] = p; |
| 934 | export_key(&p, tdb, PFKEYV2_ENCRYPTION_KEY0); |
| 935 | } |
| 936 | |
| 937 | /* Export flow/filter, if present */ |
| 938 | if (tdb->tdb_filter.sen_type) |
| 939 | export_flow(&p, IPSP_IPSEC_USE0, &tdb->tdb_filter, |
| 940 | &tdb->tdb_filtermask, headers); |
| 941 | |
| 942 | if (tdb->tdb_onext) { |
| 943 | headers[SADB_X_EXT_SA223] = p; |
| 944 | export_sa(&p, tdb->tdb_onext); |
| 945 | headers[SADB_X_EXT_DST224] = p; |
| 946 | export_address(&p, &tdb->tdb_onext->tdb_dst.sa); |
| 947 | headers[SADB_X_EXT_SATYPE235] = p; |
| 948 | export_satype(&p, tdb->tdb_onext); |
| 949 | } |
| 950 | |
| 951 | /* Export UDP encapsulation port, if present */ |
| 952 | if (tdb->tdb_udpencap_port) { |
| 953 | headers[SADB_X_EXT_UDPENCAP31] = p; |
| 954 | export_udpencap(&p, tdb); |
| 955 | } |
| 956 | |
| 957 | headers[SADB_X_EXT_REPLAY39] = p; |
| 958 | export_replay(&p, tdb); |
| 959 | |
| 960 | if (tdb->tdb_mtu > 0) { |
| 961 | headers[SADB_X_EXT_MTU38] = p; |
| 962 | export_mtu(&p, tdb); |
| 963 | } |
| 964 | |
| 965 | /* Export rdomain switch, if present */ |
| 966 | if (tdb->tdb_rdomain != tdb->tdb_rdomain_post) { |
| 967 | headers[SADB_X_EXT_RDOMAIN37] = p; |
| 968 | export_rdomain(&p, tdb); |
| 969 | } |
| 970 | |
| 971 | #if NPF1 > 0 |
| 972 | /* Export tag information, if present */ |
| 973 | if (tdb->tdb_tag) { |
| 974 | headers[SADB_X_EXT_TAG33] = p; |
| 975 | export_tag(&p, tdb); |
| 976 | } |
| 977 | |
| 978 | /* Export tap enc(4) device information, if present */ |
| 979 | if (tdb->tdb_tap) { |
| 980 | headers[SADB_X_EXT_TAP34] = p; |
| 981 | export_tap(&p, tdb); |
| 982 | } |
| 983 | #endif |
| 984 | |
| 985 | /* Export sec(4) interface information, if present */ |
| 986 | if (ISSET(tdb->tdb_flags, TDBF_IFACE)((tdb->tdb_flags) & (0x400000))) { |
| 987 | headers[SADB_X_EXT_IFACE40] = p; |
| 988 | export_iface(&p, tdb); |
| 989 | } |
| 990 | |
| 991 | headers[SADB_X_EXT_COUNTER36] = p; |
| 992 | export_counter(&p, tdb); |
| 993 | |
| 994 | if (lenused) |
| 995 | *lenused = p - *buffer; |
| 996 | rval = 0; |
| 997 | |
| 998 | ret: |
| 999 | return (rval); |
| 1000 | } |
| 1001 | |
| 1002 | /* |
| 1003 | * Dump a TDB. |
| 1004 | */ |
| 1005 | int |
| 1006 | pfkeyv2_dump_walker(struct tdb *tdb, void *state, int last) |
| 1007 | { |
| 1008 | struct dump_state *dump_state = (struct dump_state *) state; |
| 1009 | void *headers[SADB_EXT_MAX40+1], *buffer; |
| 1010 | int buflen; |
| 1011 | int rval; |
| 1012 | |
| 1013 | /* If not satype was specified, dump all TDBs */ |
| 1014 | if (!dump_state->sadb_msg->sadb_msg_satype || |
| 1015 | (tdb->tdb_satype == dump_state->sadb_msg->sadb_msg_satype)) { |
| 1016 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 1017 | headers[0] = (void *) dump_state->sadb_msg; |
| 1018 | |
| 1019 | /* Get the information from the TDB to a PFKEYv2 message */ |
| 1020 | if ((rval = pfkeyv2_get(tdb, headers, &buffer, &buflen, NULL((void *)0))) != 0) |
| 1021 | return (rval); |
| 1022 | |
| 1023 | if (last) |
| 1024 | ((struct sadb_msg *)headers[0])->sadb_msg_seq = 0; |
| 1025 | |
| 1026 | /* Send the message to the specified socket */ |
| 1027 | rval = pfkeyv2_sendmessage(headers, |
| 1028 | PFKEYV2_SENDMESSAGE_UNICAST1, dump_state->socket, 0, 0, |
| 1029 | tdb->tdb_rdomain); |
| 1030 | |
| 1031 | explicit_bzero(buffer, buflen); |
| 1032 | free(buffer, M_PFKEY74, buflen); |
| 1033 | if (rval) |
| 1034 | return (rval); |
| 1035 | } |
| 1036 | |
| 1037 | return (0); |
| 1038 | } |
| 1039 | |
| 1040 | /* |
| 1041 | * Delete an SA. |
| 1042 | */ |
| 1043 | int |
| 1044 | pfkeyv2_sa_flush(struct tdb *tdb, void *satype_vp, int last) |
| 1045 | { |
| 1046 | if (!(*((u_int8_t *) satype_vp)) || |
| 1047 | tdb->tdb_satype == *((u_int8_t *) satype_vp)) |
| 1048 | tdb_delete(tdb); |
| 1049 | return (0); |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * Convert between SATYPEs and IPsec protocols, taking into consideration |
| 1054 | * sysctl variables enabling/disabling ESP/AH and the presence of the old |
| 1055 | * IPsec transforms. |
| 1056 | */ |
| 1057 | int |
| 1058 | pfkeyv2_get_proto_alg(u_int8_t satype, u_int8_t *sproto, int *alg) |
| 1059 | { |
| 1060 | switch (satype) { |
| 1061 | #ifdef IPSEC1 |
| 1062 | case SADB_SATYPE_AH1: |
| 1063 | if (!ah_enable) |
| 1064 | return (EOPNOTSUPP45); |
| 1065 | |
| 1066 | *sproto = IPPROTO_AH51; |
| 1067 | |
| 1068 | if(alg != NULL((void *)0)) |
| 1069 | *alg = satype = XF_AH2; |
| 1070 | |
| 1071 | break; |
| 1072 | |
| 1073 | case SADB_SATYPE_ESP2: |
| 1074 | if (!esp_enable) |
| 1075 | return (EOPNOTSUPP45); |
| 1076 | |
| 1077 | *sproto = IPPROTO_ESP50; |
| 1078 | |
| 1079 | if(alg != NULL((void *)0)) |
| 1080 | *alg = satype = XF_ESP3; |
| 1081 | |
| 1082 | break; |
| 1083 | |
| 1084 | case SADB_X_SATYPE_IPIP7: |
| 1085 | *sproto = IPPROTO_IPIP4; |
| 1086 | |
| 1087 | if (alg != NULL((void *)0)) |
| 1088 | *alg = XF_IP41; |
| 1089 | |
| 1090 | break; |
| 1091 | |
| 1092 | case SADB_X_SATYPE_IPCOMP9: |
| 1093 | if (!ipcomp_enable) |
| 1094 | return (EOPNOTSUPP45); |
| 1095 | |
| 1096 | *sproto = IPPROTO_IPCOMP108; |
| 1097 | |
| 1098 | if(alg != NULL((void *)0)) |
| 1099 | *alg = satype = XF_IPCOMP6; |
| 1100 | |
| 1101 | break; |
| 1102 | #endif /* IPSEC */ |
| 1103 | #ifdef TCP_SIGNATURE1 |
| 1104 | case SADB_X_SATYPE_TCPSIGNATURE8: |
| 1105 | *sproto = IPPROTO_TCP6; |
| 1106 | |
| 1107 | if (alg != NULL((void *)0)) |
| 1108 | *alg = XF_TCPSIGNATURE5; |
| 1109 | |
| 1110 | break; |
| 1111 | #endif /* TCP_SIGNATURE */ |
| 1112 | |
| 1113 | default: /* Nothing else supported */ |
| 1114 | return (EOPNOTSUPP45); |
| 1115 | } |
| 1116 | |
| 1117 | return (0); |
| 1118 | } |
| 1119 | |
| 1120 | /* |
| 1121 | * Handle all messages from userland to kernel. |
| 1122 | */ |
| 1123 | int |
| 1124 | pfkeyv2_dosend(struct socket *so, void *message, int len) |
| 1125 | { |
| 1126 | int i, j, rval = 0, mode = PFKEYV2_SENDMESSAGE_BROADCAST3; |
| 1127 | int delflag = 0; |
| 1128 | struct sockaddr_encap encapdst, encapnetmask; |
| 1129 | struct ipsec_policy *ipo; |
| 1130 | struct ipsec_acquire *ipa; |
| 1131 | struct radix_node_head *rnh; |
| 1132 | struct radix_node *rn = NULL((void *)0); |
| 1133 | struct pkpcb *kp, *bkp; |
| 1134 | void *freeme = NULL((void *)0), *freeme2 = NULL((void *)0), *freeme3 = NULL((void *)0); |
| 1135 | int freeme_sz = 0, freeme2_sz = 0, freeme3_sz = 0; |
| 1136 | void *bckptr = NULL((void *)0); |
| 1137 | void *headers[SADB_EXT_MAX40 + 1]; |
| 1138 | union sockaddr_union *sunionp; |
| 1139 | struct tdb *sa1 = NULL((void *)0), *sa2 = NULL((void *)0); |
| 1140 | struct sadb_msg *smsg; |
| 1141 | struct sadb_spirange *sprng; |
| 1142 | struct sadb_sa *ssa; |
| 1143 | struct sadb_supported *ssup; |
| 1144 | struct sadb_ident *sid, *did; |
| 1145 | struct srp_ref sr; |
| 1146 | struct sadb_x_rdomain *srdomain; |
| 1147 | u_int rdomain = 0; |
| 1148 | int promisc; |
| 1149 | |
| 1150 | mtx_enter(&pfkeyv2_mtx); |
| 1151 | promisc = npromisc; |
| 1152 | mtx_leave(&pfkeyv2_mtx); |
| 1153 | |
| 1154 | /* Verify that we received this over a legitimate pfkeyv2 socket */ |
| 1155 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 1156 | |
| 1157 | kp = sotokeycb(so)((struct pkpcb *)(so)->so_pcb); |
| 1158 | if (!kp) { |
| 1159 | rval = EINVAL22; |
| 1160 | goto ret; |
| 1161 | } |
| 1162 | |
| 1163 | rdomain = kp->kcb_rdomain; |
| 1164 | |
| 1165 | /* Validate message format */ |
| 1166 | if ((rval = pfkeyv2_parsemessage(message, len, headers)) != 0) |
| 1167 | goto ret; |
| 1168 | |
| 1169 | /* If we have any promiscuous listeners, send them a copy of the message */ |
| 1170 | if (promisc) { |
| 1171 | struct mbuf *packet; |
| 1172 | |
| 1173 | freeme_sz = sizeof(struct sadb_msg) + len; |
| 1174 | if (!(freeme = malloc(freeme_sz, M_PFKEY74, M_NOWAIT0x0002))) { |
| 1175 | rval = ENOMEM12; |
| 1176 | goto ret; |
| 1177 | } |
| 1178 | |
| 1179 | /* Initialize encapsulating header */ |
| 1180 | bzero(freeme, sizeof(struct sadb_msg))__builtin_bzero((freeme), (sizeof(struct sadb_msg))); |
| 1181 | smsg = (struct sadb_msg *) freeme; |
| 1182 | smsg->sadb_msg_version = PF_KEY_V22; |
| 1183 | smsg->sadb_msg_type = SADB_X_PROMISC11; |
| 1184 | smsg->sadb_msg_len = (sizeof(struct sadb_msg) + len) / |
| 1185 | sizeof(uint64_t); |
| 1186 | smsg->sadb_msg_seq = curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid; |
| 1187 | |
| 1188 | bcopy(message, freeme + sizeof(struct sadb_msg), len); |
| 1189 | |
| 1190 | /* Convert to mbuf chain */ |
| 1191 | if ((rval = pfdatatopacket(freeme, freeme_sz, &packet)) != 0) |
| 1192 | goto ret; |
| 1193 | |
| 1194 | /* Send to all promiscuous listeners */ |
| 1195 | SRPL_FOREACH(bkp, &sr, &pkptable.pkp_list, kcb_list)for ((bkp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (bkp) != ((void *)0); (bkp) = srp_follow((& sr), &(bkp)->kcb_list.se_next)) { |
| 1196 | if (bkp->kcb_rdomain != kp->kcb_rdomain) |
| 1197 | continue; |
| 1198 | |
| 1199 | keylock(bkp)solock((bkp)->kcb_socket); |
| 1200 | if (bkp->kcb_flags & PFKEYV2_SOCKETFLAGS_PROMISC2) |
| 1201 | pfkey_sendup(bkp, packet, 1); |
| 1202 | keyunlock(bkp)sounlock((bkp)->kcb_socket); |
| 1203 | } |
| 1204 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 1205 | |
| 1206 | m_freem(packet); |
| 1207 | |
| 1208 | /* Paranoid */ |
| 1209 | explicit_bzero(freeme, freeme_sz); |
| 1210 | free(freeme, M_PFKEY74, freeme_sz); |
| 1211 | freeme = NULL((void *)0); |
| 1212 | freeme_sz = 0; |
| 1213 | } |
| 1214 | |
| 1215 | /* use specified rdomain */ |
| 1216 | srdomain = (struct sadb_x_rdomain *) headers[SADB_X_EXT_RDOMAIN37]; |
| 1217 | if (srdomain) { |
| 1218 | if (!rtable_exists(srdomain->sadb_x_rdomain_dom1) || |
| 1219 | !rtable_exists(srdomain->sadb_x_rdomain_dom2)) { |
| 1220 | rval = EINVAL22; |
| 1221 | goto ret; |
| 1222 | } |
| 1223 | rdomain = srdomain->sadb_x_rdomain_dom1; |
| 1224 | } |
| 1225 | |
| 1226 | smsg = (struct sadb_msg *) headers[0]; |
| 1227 | switch (smsg->sadb_msg_type) { |
| 1228 | case SADB_GETSPI1: /* Reserve an SPI */ |
| 1229 | sa1 = malloc(sizeof (*sa1), M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008); |
| 1230 | if (sa1 == NULL((void *)0)) { |
| 1231 | rval = ENOMEM12; |
| 1232 | goto ret; |
| 1233 | } |
| 1234 | |
| 1235 | sa1->tdb_satype = smsg->sadb_msg_satype; |
| 1236 | if ((rval = pfkeyv2_get_proto_alg(sa1->tdb_satype, |
| 1237 | &sa1->tdb_sproto, 0))) |
| 1238 | goto ret; |
| 1239 | |
| 1240 | import_address(&sa1->tdb_src.sa, headers[SADB_EXT_ADDRESS_SRC5]); |
| 1241 | import_address(&sa1->tdb_dst.sa, headers[SADB_EXT_ADDRESS_DST6]); |
| 1242 | |
| 1243 | /* Find an unused SA identifier */ |
| 1244 | sprng = (struct sadb_spirange *) headers[SADB_EXT_SPIRANGE16]; |
| 1245 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1246 | sa1->tdb_spi = reserve_spi(rdomain, |
| 1247 | sprng->sadb_spirange_min, sprng->sadb_spirange_max, |
| 1248 | &sa1->tdb_src, &sa1->tdb_dst, sa1->tdb_sproto, &rval); |
| 1249 | if (sa1->tdb_spi == 0) { |
| 1250 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1251 | goto ret; |
| 1252 | } |
| 1253 | |
| 1254 | /* Send a message back telling what the SA (the SPI really) is */ |
| 1255 | freeme_sz = sizeof(struct sadb_sa); |
| 1256 | if (!(freeme = malloc(freeme_sz, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 1257 | rval = ENOMEM12; |
| 1258 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1259 | goto ret; |
| 1260 | } |
| 1261 | |
| 1262 | headers[SADB_EXT_SPIRANGE16] = NULL((void *)0); |
| 1263 | headers[SADB_EXT_SA1] = freeme; |
| 1264 | bckptr = freeme; |
| 1265 | |
| 1266 | /* We really only care about the SPI, but we'll export the SA */ |
| 1267 | export_sa((void **) &bckptr, sa1); |
| 1268 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1269 | break; |
| 1270 | |
| 1271 | case SADB_UPDATE2: |
| 1272 | ssa = (struct sadb_sa *) headers[SADB_EXT_SA1]; |
| 1273 | sunionp = (union sockaddr_union *) (headers[SADB_EXT_ADDRESS_DST6] + |
| 1274 | sizeof(struct sadb_address)); |
| 1275 | |
| 1276 | /* Either all or none of the flow must be included */ |
| 1277 | if ((headers[SADB_X_EXT_SRC_FLOW21] || |
| 1278 | headers[SADB_X_EXT_PROTOCOL19] || |
| 1279 | headers[SADB_X_EXT_FLOW_TYPE20] || |
| 1280 | headers[SADB_X_EXT_DST_FLOW22] || |
| 1281 | headers[SADB_X_EXT_SRC_MASK17] || |
| 1282 | headers[SADB_X_EXT_DST_MASK18]) && |
| 1283 | !(headers[SADB_X_EXT_SRC_FLOW21] && |
| 1284 | headers[SADB_X_EXT_PROTOCOL19] && |
| 1285 | headers[SADB_X_EXT_FLOW_TYPE20] && |
| 1286 | headers[SADB_X_EXT_DST_FLOW22] && |
| 1287 | headers[SADB_X_EXT_SRC_MASK17] && |
| 1288 | headers[SADB_X_EXT_DST_MASK18])) { |
| 1289 | rval = EINVAL22; |
| 1290 | goto ret; |
| 1291 | } |
| 1292 | #ifdef IPSEC1 |
| 1293 | /* UDP encap has to be enabled and is only supported for ESP */ |
| 1294 | if (headers[SADB_X_EXT_UDPENCAP31] && |
| 1295 | (!udpencap_enable || |
| 1296 | smsg->sadb_msg_satype != SADB_SATYPE_ESP2)) { |
| 1297 | rval = EINVAL22; |
| 1298 | goto ret; |
| 1299 | } |
| 1300 | #endif /* IPSEC */ |
| 1301 | |
| 1302 | /* Find TDB */ |
| 1303 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1304 | sa2 = gettdb(rdomain, ssa->sadb_sa_spi, sunionp,gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0) |
| 1305 | SADB_X_GETSPROTO(smsg->sadb_msg_satype))gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0); |
| 1306 | |
| 1307 | /* If there's no such SA, we're done */ |
| 1308 | if (sa2 == NULL((void *)0)) { |
| 1309 | rval = ESRCH3; |
| 1310 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1311 | goto ret; |
| 1312 | } |
| 1313 | |
| 1314 | /* If this is a reserved SA */ |
| 1315 | if (sa2->tdb_flags & TDBF_INVALID0x00010) { |
| 1316 | struct tdb *newsa; |
| 1317 | struct ipsecinit ii; |
| 1318 | int alg; |
| 1319 | |
| 1320 | /* Create new TDB */ |
| 1321 | newsa = tdb_alloc(rdomain); |
| 1322 | newsa->tdb_satype = smsg->sadb_msg_satype; |
| 1323 | |
| 1324 | if ((rval = pfkeyv2_get_proto_alg(newsa->tdb_satype, |
| 1325 | &newsa->tdb_sproto, &alg))) { |
| 1326 | tdb_unref(newsa); |
| 1327 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1328 | goto ret; |
| 1329 | } |
| 1330 | |
| 1331 | /* Initialize SA */ |
| 1332 | bzero(&ii, sizeof(struct ipsecinit))__builtin_bzero((&ii), (sizeof(struct ipsecinit))); |
| 1333 | import_sa(newsa, headers[SADB_EXT_SA1], &ii); |
| 1334 | import_address(&newsa->tdb_src.sa, |
| 1335 | headers[SADB_EXT_ADDRESS_SRC5]); |
| 1336 | import_address(&newsa->tdb_dst.sa, |
| 1337 | headers[SADB_EXT_ADDRESS_DST6]); |
| 1338 | import_lifetime(newsa, |
| 1339 | headers[SADB_EXT_LIFETIME_CURRENT2], |
| 1340 | PFKEYV2_LIFETIME_CURRENT2); |
| 1341 | import_lifetime(newsa, headers[SADB_EXT_LIFETIME_SOFT4], |
| 1342 | PFKEYV2_LIFETIME_SOFT1); |
| 1343 | import_lifetime(newsa, headers[SADB_EXT_LIFETIME_HARD3], |
| 1344 | PFKEYV2_LIFETIME_HARD0); |
| 1345 | import_key(&ii, headers[SADB_EXT_KEY_AUTH8], |
| 1346 | PFKEYV2_AUTHENTICATION_KEY1); |
| 1347 | import_key(&ii, headers[SADB_EXT_KEY_ENCRYPT9], |
| 1348 | PFKEYV2_ENCRYPTION_KEY0); |
| 1349 | newsa->tdb_ids_swapped = 1; /* only on TDB_UPDATE */ |
| 1350 | import_identities(&newsa->tdb_ids, |
| 1351 | newsa->tdb_ids_swapped, |
| 1352 | headers[SADB_EXT_IDENTITY_SRC10], |
| 1353 | headers[SADB_EXT_IDENTITY_DST11]); |
| 1354 | if ((rval = import_flow(&newsa->tdb_filter, |
| 1355 | &newsa->tdb_filtermask, |
| 1356 | headers[SADB_X_EXT_SRC_FLOW21], |
| 1357 | headers[SADB_X_EXT_SRC_MASK17], |
| 1358 | headers[SADB_X_EXT_DST_FLOW22], |
| 1359 | headers[SADB_X_EXT_DST_MASK18], |
| 1360 | headers[SADB_X_EXT_PROTOCOL19], |
| 1361 | headers[SADB_X_EXT_FLOW_TYPE20]))) { |
| 1362 | tdb_unref(newsa); |
| 1363 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1364 | goto ret; |
| 1365 | } |
| 1366 | import_udpencap(newsa, headers[SADB_X_EXT_UDPENCAP31]); |
| 1367 | import_rdomain(newsa, headers[SADB_X_EXT_RDOMAIN37]); |
| 1368 | #if NPF1 > 0 |
| 1369 | import_tag(newsa, headers[SADB_X_EXT_TAG33]); |
| 1370 | import_tap(newsa, headers[SADB_X_EXT_TAP34]); |
| 1371 | #endif |
| 1372 | import_iface(newsa, headers[SADB_X_EXT_IFACE40]); |
| 1373 | |
| 1374 | /* Exclude sensitive data from reply message. */ |
| 1375 | headers[SADB_EXT_KEY_AUTH8] = NULL((void *)0); |
| 1376 | headers[SADB_EXT_KEY_ENCRYPT9] = NULL((void *)0); |
| 1377 | headers[SADB_X_EXT_LOCAL_AUTH28] = NULL((void *)0); |
| 1378 | headers[SADB_X_EXT_REMOTE_AUTH29] = NULL((void *)0); |
| 1379 | |
| 1380 | newsa->tdb_seq = smsg->sadb_msg_seq; |
| 1381 | |
| 1382 | rval = tdb_init(newsa, alg, &ii); |
| 1383 | if (rval) { |
| 1384 | rval = EINVAL22; |
| 1385 | tdb_unref(newsa); |
| 1386 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1387 | goto ret; |
| 1388 | } |
| 1389 | |
| 1390 | newsa->tdb_cur_allocations = sa2->tdb_cur_allocations; |
| 1391 | |
| 1392 | /* Delete old version of the SA, insert new one */ |
| 1393 | tdb_delete(sa2); |
| 1394 | |
| 1395 | tdb_addtimeouts(newsa); |
| 1396 | |
| 1397 | puttdb(newsa); |
| 1398 | } else { |
| 1399 | /* |
| 1400 | * The SA is already initialized, so we're only allowed to |
| 1401 | * change lifetimes and some other information; we're |
| 1402 | * not allowed to change keys, addresses or identities. |
| 1403 | */ |
| 1404 | if (headers[SADB_EXT_KEY_AUTH8] || |
| 1405 | headers[SADB_EXT_KEY_ENCRYPT9] || |
| 1406 | headers[SADB_EXT_IDENTITY_SRC10] || |
| 1407 | headers[SADB_EXT_IDENTITY_DST11] || |
| 1408 | headers[SADB_EXT_SENSITIVITY12]) { |
| 1409 | rval = EINVAL22; |
| 1410 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1411 | goto ret; |
| 1412 | } |
| 1413 | |
| 1414 | import_sa(sa2, headers[SADB_EXT_SA1], NULL((void *)0)); |
| 1415 | import_lifetime(sa2, |
| 1416 | headers[SADB_EXT_LIFETIME_CURRENT2], |
| 1417 | PFKEYV2_LIFETIME_CURRENT2); |
| 1418 | import_lifetime(sa2, headers[SADB_EXT_LIFETIME_SOFT4], |
| 1419 | PFKEYV2_LIFETIME_SOFT1); |
| 1420 | import_lifetime(sa2, headers[SADB_EXT_LIFETIME_HARD3], |
| 1421 | PFKEYV2_LIFETIME_HARD0); |
| 1422 | import_udpencap(sa2, headers[SADB_X_EXT_UDPENCAP31]); |
| 1423 | #if NPF1 > 0 |
| 1424 | import_tag(sa2, headers[SADB_X_EXT_TAG33]); |
| 1425 | import_tap(sa2, headers[SADB_X_EXT_TAP34]); |
| 1426 | #endif |
| 1427 | import_iface(sa2, headers[SADB_X_EXT_IFACE40]); |
| 1428 | |
| 1429 | tdb_addtimeouts(sa2); |
| 1430 | |
| 1431 | if (headers[SADB_EXT_ADDRESS_SRC5] || |
| 1432 | headers[SADB_EXT_ADDRESS_PROXY7]) { |
| 1433 | mtx_enter(&tdb_sadb_mtx); |
| 1434 | tdb_unlink_locked(sa2); |
| 1435 | import_address((struct sockaddr *)&sa2->tdb_src, |
| 1436 | headers[SADB_EXT_ADDRESS_SRC5]); |
| 1437 | import_address((struct sockaddr *)&sa2->tdb_dst, |
| 1438 | headers[SADB_EXT_ADDRESS_PROXY7]); |
| 1439 | puttdb_locked(sa2); |
| 1440 | mtx_leave(&tdb_sadb_mtx); |
| 1441 | } |
| 1442 | } |
| 1443 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1444 | |
| 1445 | break; |
| 1446 | case SADB_ADD3: |
| 1447 | ssa = (struct sadb_sa *) headers[SADB_EXT_SA1]; |
| 1448 | sunionp = (union sockaddr_union *) (headers[SADB_EXT_ADDRESS_DST6] + |
| 1449 | sizeof(struct sadb_address)); |
| 1450 | |
| 1451 | /* Either all or none of the flow must be included */ |
| 1452 | if ((headers[SADB_X_EXT_SRC_FLOW21] || |
| 1453 | headers[SADB_X_EXT_PROTOCOL19] || |
| 1454 | headers[SADB_X_EXT_FLOW_TYPE20] || |
| 1455 | headers[SADB_X_EXT_DST_FLOW22] || |
| 1456 | headers[SADB_X_EXT_SRC_MASK17] || |
| 1457 | headers[SADB_X_EXT_DST_MASK18]) && |
| 1458 | !(headers[SADB_X_EXT_SRC_FLOW21] && |
| 1459 | headers[SADB_X_EXT_PROTOCOL19] && |
| 1460 | headers[SADB_X_EXT_FLOW_TYPE20] && |
| 1461 | headers[SADB_X_EXT_DST_FLOW22] && |
| 1462 | headers[SADB_X_EXT_SRC_MASK17] && |
| 1463 | headers[SADB_X_EXT_DST_MASK18])) { |
| 1464 | rval = EINVAL22; |
| 1465 | goto ret; |
| 1466 | } |
| 1467 | #ifdef IPSEC1 |
| 1468 | /* UDP encap has to be enabled and is only supported for ESP */ |
| 1469 | if (headers[SADB_X_EXT_UDPENCAP31] && |
| 1470 | (!udpencap_enable || |
| 1471 | smsg->sadb_msg_satype != SADB_SATYPE_ESP2)) { |
| 1472 | rval = EINVAL22; |
| 1473 | goto ret; |
| 1474 | } |
| 1475 | #endif /* IPSEC */ |
| 1476 | |
| 1477 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1478 | sa2 = gettdb(rdomain, ssa->sadb_sa_spi, sunionp,gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0) |
| 1479 | SADB_X_GETSPROTO(smsg->sadb_msg_satype))gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0); |
| 1480 | |
| 1481 | /* We can't add an existing SA! */ |
| 1482 | if (sa2 != NULL((void *)0)) { |
| 1483 | rval = EEXIST17; |
| 1484 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1485 | goto ret; |
| 1486 | } |
| 1487 | |
| 1488 | /* We can only add "mature" SAs */ |
| 1489 | if (ssa->sadb_sa_state != SADB_SASTATE_MATURE1) { |
| 1490 | rval = EINVAL22; |
| 1491 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1492 | goto ret; |
| 1493 | } |
| 1494 | |
| 1495 | { |
| 1496 | struct tdb *newsa; |
| 1497 | struct ipsecinit ii; |
| 1498 | int alg; |
| 1499 | |
| 1500 | /* Create new TDB */ |
| 1501 | newsa = tdb_alloc(rdomain); |
| 1502 | newsa->tdb_satype = smsg->sadb_msg_satype; |
| 1503 | |
| 1504 | if ((rval = pfkeyv2_get_proto_alg(newsa->tdb_satype, |
| 1505 | &newsa->tdb_sproto, &alg))) { |
| 1506 | tdb_unref(newsa); |
| 1507 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1508 | goto ret; |
| 1509 | } |
| 1510 | |
| 1511 | /* Initialize SA */ |
| 1512 | bzero(&ii, sizeof(struct ipsecinit))__builtin_bzero((&ii), (sizeof(struct ipsecinit))); |
| 1513 | import_sa(newsa, headers[SADB_EXT_SA1], &ii); |
| 1514 | import_address(&newsa->tdb_src.sa, |
| 1515 | headers[SADB_EXT_ADDRESS_SRC5]); |
| 1516 | import_address(&newsa->tdb_dst.sa, |
| 1517 | headers[SADB_EXT_ADDRESS_DST6]); |
| 1518 | |
| 1519 | import_lifetime(newsa, |
| 1520 | headers[SADB_EXT_LIFETIME_CURRENT2], |
| 1521 | PFKEYV2_LIFETIME_CURRENT2); |
| 1522 | import_lifetime(newsa, headers[SADB_EXT_LIFETIME_SOFT4], |
| 1523 | PFKEYV2_LIFETIME_SOFT1); |
| 1524 | import_lifetime(newsa, headers[SADB_EXT_LIFETIME_HARD3], |
| 1525 | PFKEYV2_LIFETIME_HARD0); |
| 1526 | |
| 1527 | import_key(&ii, headers[SADB_EXT_KEY_AUTH8], |
| 1528 | PFKEYV2_AUTHENTICATION_KEY1); |
| 1529 | import_key(&ii, headers[SADB_EXT_KEY_ENCRYPT9], |
| 1530 | PFKEYV2_ENCRYPTION_KEY0); |
| 1531 | |
| 1532 | import_identities(&newsa->tdb_ids, |
| 1533 | newsa->tdb_ids_swapped, |
| 1534 | headers[SADB_EXT_IDENTITY_SRC10], |
| 1535 | headers[SADB_EXT_IDENTITY_DST11]); |
| 1536 | |
| 1537 | if ((rval = import_flow(&newsa->tdb_filter, |
| 1538 | &newsa->tdb_filtermask, |
| 1539 | headers[SADB_X_EXT_SRC_FLOW21], |
| 1540 | headers[SADB_X_EXT_SRC_MASK17], |
| 1541 | headers[SADB_X_EXT_DST_FLOW22], |
| 1542 | headers[SADB_X_EXT_DST_MASK18], |
| 1543 | headers[SADB_X_EXT_PROTOCOL19], |
| 1544 | headers[SADB_X_EXT_FLOW_TYPE20]))) { |
| 1545 | tdb_unref(newsa); |
| 1546 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1547 | goto ret; |
| 1548 | } |
| 1549 | import_udpencap(newsa, headers[SADB_X_EXT_UDPENCAP31]); |
| 1550 | import_rdomain(newsa, headers[SADB_X_EXT_RDOMAIN37]); |
| 1551 | #if NPF1 > 0 |
| 1552 | import_tag(newsa, headers[SADB_X_EXT_TAG33]); |
| 1553 | import_tap(newsa, headers[SADB_X_EXT_TAP34]); |
| 1554 | #endif |
| 1555 | import_iface(newsa, headers[SADB_X_EXT_IFACE40]); |
| 1556 | |
| 1557 | /* Exclude sensitive data from reply message. */ |
| 1558 | headers[SADB_EXT_KEY_AUTH8] = NULL((void *)0); |
| 1559 | headers[SADB_EXT_KEY_ENCRYPT9] = NULL((void *)0); |
| 1560 | headers[SADB_X_EXT_LOCAL_AUTH28] = NULL((void *)0); |
| 1561 | headers[SADB_X_EXT_REMOTE_AUTH29] = NULL((void *)0); |
| 1562 | |
| 1563 | newsa->tdb_seq = smsg->sadb_msg_seq; |
| 1564 | |
| 1565 | rval = tdb_init(newsa, alg, &ii); |
| 1566 | if (rval) { |
| 1567 | rval = EINVAL22; |
| 1568 | tdb_unref(newsa); |
| 1569 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1570 | goto ret; |
| 1571 | } |
| 1572 | |
| 1573 | tdb_addtimeouts(newsa); |
| 1574 | |
| 1575 | /* Add TDB in table */ |
| 1576 | puttdb(newsa); |
| 1577 | } |
| 1578 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1579 | |
| 1580 | break; |
| 1581 | |
| 1582 | case SADB_DELETE4: |
| 1583 | ssa = (struct sadb_sa *) headers[SADB_EXT_SA1]; |
| 1584 | sunionp = |
| 1585 | (union sockaddr_union *)(headers[SADB_EXT_ADDRESS_DST6] + |
| 1586 | sizeof(struct sadb_address)); |
| 1587 | |
| 1588 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1589 | sa2 = gettdb(rdomain, ssa->sadb_sa_spi, sunionp,gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0) |
| 1590 | SADB_X_GETSPROTO(smsg->sadb_msg_satype))gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0); |
| 1591 | if (sa2 == NULL((void *)0)) { |
| 1592 | rval = ESRCH3; |
| 1593 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1594 | goto ret; |
| 1595 | } |
| 1596 | |
| 1597 | tdb_delete(sa2); |
| 1598 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1599 | |
| 1600 | break; |
| 1601 | |
| 1602 | case SADB_X_ASKPOLICY15: |
| 1603 | /* Get the relevant policy */ |
| 1604 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1605 | ipa = ipsec_get_acquire(((struct sadb_x_policy *) |
| 1606 | headers[SADB_X_EXT_POLICY25])->sadb_x_policy_seq); |
| 1607 | if (ipa == NULL((void *)0)) { |
| 1608 | rval = ESRCH3; |
| 1609 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1610 | goto ret; |
| 1611 | } |
| 1612 | |
| 1613 | rval = pfkeyv2_policy(ipa, headers, &freeme, &freeme_sz); |
| 1614 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1615 | ipsec_unref_acquire(ipa); |
| 1616 | if (rval) |
| 1617 | mode = PFKEYV2_SENDMESSAGE_UNICAST1; |
| 1618 | |
| 1619 | break; |
| 1620 | |
| 1621 | case SADB_GET5: |
| 1622 | ssa = (struct sadb_sa *) headers[SADB_EXT_SA1]; |
| 1623 | sunionp = |
| 1624 | (union sockaddr_union *)(headers[SADB_EXT_ADDRESS_DST6] + |
| 1625 | sizeof(struct sadb_address)); |
| 1626 | |
| 1627 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1628 | sa2 = gettdb(rdomain, ssa->sadb_sa_spi, sunionp,gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0) |
| 1629 | SADB_X_GETSPROTO(smsg->sadb_msg_satype))gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0); |
| 1630 | if (sa2 == NULL((void *)0)) { |
| 1631 | rval = ESRCH3; |
| 1632 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1633 | goto ret; |
| 1634 | } |
| 1635 | |
| 1636 | rval = pfkeyv2_get(sa2, headers, &freeme, &freeme_sz, NULL((void *)0)); |
| 1637 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1638 | if (rval) |
| 1639 | mode = PFKEYV2_SENDMESSAGE_UNICAST1; |
| 1640 | |
| 1641 | break; |
| 1642 | |
| 1643 | case SADB_REGISTER7: |
| 1644 | keylock(kp)solock((kp)->kcb_socket); |
| 1645 | if (!(kp->kcb_flags & PFKEYV2_SOCKETFLAGS_REGISTERED1)) { |
| 1646 | kp->kcb_flags |= PFKEYV2_SOCKETFLAGS_REGISTERED1; |
| 1647 | mtx_enter(&pfkeyv2_mtx); |
| 1648 | nregistered++; |
| 1649 | mtx_leave(&pfkeyv2_mtx); |
| 1650 | } |
| 1651 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 1652 | |
| 1653 | freeme_sz = sizeof(struct sadb_supported) + sizeof(ealgs); |
| 1654 | if (!(freeme = malloc(freeme_sz, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 1655 | rval = ENOMEM12; |
| 1656 | goto ret; |
| 1657 | } |
| 1658 | |
| 1659 | ssup = (struct sadb_supported *) freeme; |
| 1660 | ssup->sadb_supported_len = freeme_sz / sizeof(uint64_t); |
| 1661 | |
| 1662 | { |
| 1663 | void *p = freeme + sizeof(struct sadb_supported); |
| 1664 | |
| 1665 | bcopy(&ealgs[0], p, sizeof(ealgs)); |
| 1666 | } |
| 1667 | |
| 1668 | headers[SADB_EXT_SUPPORTED_ENCRYPT15] = freeme; |
| 1669 | |
| 1670 | freeme2_sz = sizeof(struct sadb_supported) + sizeof(aalgs); |
| 1671 | if (!(freeme2 = malloc(freeme2_sz, M_PFKEY74, |
| 1672 | M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 1673 | rval = ENOMEM12; |
| 1674 | goto ret; |
| 1675 | } |
| 1676 | |
| 1677 | /* Keep track what this socket has registered for */ |
| 1678 | keylock(kp)solock((kp)->kcb_socket); |
| 1679 | kp->kcb_reg |= |
| 1680 | (1 << ((struct sadb_msg *)message)->sadb_msg_satype); |
| 1681 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 1682 | |
| 1683 | ssup = (struct sadb_supported *) freeme2; |
| 1684 | ssup->sadb_supported_len = freeme2_sz / sizeof(uint64_t); |
| 1685 | |
| 1686 | { |
| 1687 | void *p = freeme2 + sizeof(struct sadb_supported); |
| 1688 | |
| 1689 | bcopy(&aalgs[0], p, sizeof(aalgs)); |
| 1690 | } |
| 1691 | |
| 1692 | headers[SADB_EXT_SUPPORTED_AUTH14] = freeme2; |
| 1693 | |
| 1694 | freeme3_sz = sizeof(struct sadb_supported) + sizeof(calgs); |
| 1695 | if (!(freeme3 = malloc(freeme3_sz, M_PFKEY74, |
| 1696 | M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 1697 | rval = ENOMEM12; |
| 1698 | goto ret; |
| 1699 | } |
| 1700 | |
| 1701 | ssup = (struct sadb_supported *) freeme3; |
| 1702 | ssup->sadb_supported_len = freeme3_sz / sizeof(uint64_t); |
| 1703 | |
| 1704 | { |
| 1705 | void *p = freeme3 + sizeof(struct sadb_supported); |
| 1706 | |
| 1707 | bcopy(&calgs[0], p, sizeof(calgs)); |
| 1708 | } |
| 1709 | |
| 1710 | headers[SADB_X_EXT_SUPPORTED_COMP30] = freeme3; |
| 1711 | |
| 1712 | break; |
| 1713 | |
| 1714 | case SADB_ACQUIRE6: |
| 1715 | case SADB_EXPIRE8: |
| 1716 | /* Nothing to handle */ |
| 1717 | rval = 0; |
| 1718 | break; |
| 1719 | |
| 1720 | case SADB_FLUSH9: |
| 1721 | rval = 0; |
| 1722 | |
| 1723 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1724 | switch (smsg->sadb_msg_satype) { |
| 1725 | case SADB_SATYPE_UNSPEC0: |
| 1726 | spd_table_walk(rdomain, pfkeyv2_policy_flush, NULL((void *)0)); |
| 1727 | /* FALLTHROUGH */ |
| 1728 | case SADB_SATYPE_AH1: |
| 1729 | case SADB_SATYPE_ESP2: |
| 1730 | case SADB_X_SATYPE_IPIP7: |
| 1731 | case SADB_X_SATYPE_IPCOMP9: |
| 1732 | #ifdef TCP_SIGNATURE1 |
| 1733 | case SADB_X_SATYPE_TCPSIGNATURE8: |
| 1734 | #endif /* TCP_SIGNATURE */ |
| 1735 | tdb_walk(rdomain, pfkeyv2_sa_flush, |
| 1736 | (u_int8_t *) &(smsg->sadb_msg_satype)); |
| 1737 | |
| 1738 | break; |
| 1739 | |
| 1740 | default: |
| 1741 | rval = EINVAL22; /* Unknown/unsupported type */ |
| 1742 | } |
| 1743 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1744 | |
| 1745 | break; |
| 1746 | |
| 1747 | case SADB_DUMP10: |
| 1748 | { |
| 1749 | struct dump_state dump_state; |
| 1750 | dump_state.sadb_msg = (struct sadb_msg *) headers[0]; |
| 1751 | dump_state.socket = so; |
| 1752 | |
| 1753 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1754 | rval = tdb_walk(rdomain, pfkeyv2_dump_walker, &dump_state); |
| 1755 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1756 | if (!rval) |
| 1757 | goto realret; |
| 1758 | if ((rval == ENOMEM12) || (rval == ENOBUFS55)) |
| 1759 | rval = 0; |
| 1760 | } |
| 1761 | break; |
| 1762 | |
| 1763 | case SADB_X_GRPSPIS14: |
| 1764 | { |
| 1765 | struct tdb *tdb1, *tdb2, *tdb3; |
| 1766 | struct sadb_protocol *sa_proto; |
| 1767 | |
| 1768 | ssa = (struct sadb_sa *) headers[SADB_EXT_SA1]; |
| 1769 | sunionp = (union sockaddr_union *) (headers[SADB_EXT_ADDRESS_DST6] + |
| 1770 | sizeof(struct sadb_address)); |
| 1771 | |
| 1772 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1773 | tdb1 = gettdb(rdomain, ssa->sadb_sa_spi, sunionp,gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0) |
| 1774 | SADB_X_GETSPROTO(smsg->sadb_msg_satype))gettdb_dir((rdomain),(ssa->sadb_sa_spi),(sunionp),(( (smsg ->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg->sadb_msg_satype ) == 9 ? 108: 4 )),0); |
| 1775 | if (tdb1 == NULL((void *)0)) { |
| 1776 | rval = ESRCH3; |
| 1777 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1778 | goto ret; |
| 1779 | } |
| 1780 | |
| 1781 | ssa = (struct sadb_sa *) headers[SADB_X_EXT_SA223]; |
| 1782 | sunionp = (union sockaddr_union *) (headers[SADB_X_EXT_DST224] + |
| 1783 | sizeof(struct sadb_address)); |
| 1784 | sa_proto = (struct sadb_protocol *) headers[SADB_X_EXT_SATYPE235]; |
| 1785 | |
| 1786 | /* optionally fetch tdb2 from rdomain2 */ |
| 1787 | tdb2 = gettdb(srdomain ? srdomain->sadb_x_rdomain_dom2 : rdomain,gettdb_dir((srdomain ? srdomain->sadb_x_rdomain_dom2 : rdomain ),(ssa->sadb_sa_spi),(sunionp),(( (sa_proto->sadb_protocol_proto ) == 1 ? 51 : (sa_proto->sadb_protocol_proto) == 2 ? 50 : ( sa_proto->sadb_protocol_proto) == 8 ? 6 : (sa_proto->sadb_protocol_proto ) == 9 ? 108: 4 )),0) |
| 1788 | ssa->sadb_sa_spi, sunionp,gettdb_dir((srdomain ? srdomain->sadb_x_rdomain_dom2 : rdomain ),(ssa->sadb_sa_spi),(sunionp),(( (sa_proto->sadb_protocol_proto ) == 1 ? 51 : (sa_proto->sadb_protocol_proto) == 2 ? 50 : ( sa_proto->sadb_protocol_proto) == 8 ? 6 : (sa_proto->sadb_protocol_proto ) == 9 ? 108: 4 )),0) |
| 1789 | SADB_X_GETSPROTO(sa_proto->sadb_protocol_proto))gettdb_dir((srdomain ? srdomain->sadb_x_rdomain_dom2 : rdomain ),(ssa->sadb_sa_spi),(sunionp),(( (sa_proto->sadb_protocol_proto ) == 1 ? 51 : (sa_proto->sadb_protocol_proto) == 2 ? 50 : ( sa_proto->sadb_protocol_proto) == 8 ? 6 : (sa_proto->sadb_protocol_proto ) == 9 ? 108: 4 )),0); |
| 1790 | if (tdb2 == NULL((void *)0)) { |
| 1791 | tdb_unref(tdb1); |
| 1792 | rval = ESRCH3; |
| 1793 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1794 | goto ret; |
| 1795 | } |
| 1796 | |
| 1797 | /* Detect cycles */ |
| 1798 | for (tdb3 = tdb2; tdb3; tdb3 = tdb3->tdb_onext) |
| 1799 | if (tdb3 == tdb1) { |
| 1800 | tdb_unref(tdb1); |
| 1801 | tdb_unref(tdb2); |
| 1802 | rval = ESRCH3; |
| 1803 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1804 | goto ret; |
| 1805 | } |
| 1806 | |
| 1807 | /* Maintenance */ |
| 1808 | if ((tdb1->tdb_onext) && |
| 1809 | (tdb1->tdb_onext->tdb_inext == tdb1)) { |
| 1810 | tdb_unref(tdb1->tdb_onext->tdb_inext); |
| 1811 | tdb1->tdb_onext->tdb_inext = NULL((void *)0); |
| 1812 | } |
| 1813 | |
| 1814 | if ((tdb2->tdb_inext) && |
| 1815 | (tdb2->tdb_inext->tdb_onext == tdb2)) { |
| 1816 | tdb_unref(tdb2->tdb_inext->tdb_onext); |
| 1817 | tdb2->tdb_inext->tdb_onext = NULL((void *)0); |
| 1818 | } |
| 1819 | |
| 1820 | /* Link them */ |
| 1821 | tdb1->tdb_onext = tdb2; |
| 1822 | tdb2->tdb_inext = tdb1; |
| 1823 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1824 | } |
| 1825 | break; |
| 1826 | |
| 1827 | case SADB_X_DELFLOW13: |
| 1828 | delflag = 1; |
| 1829 | /*FALLTHROUGH*/ |
| 1830 | case SADB_X_ADDFLOW12: |
| 1831 | { |
| 1832 | struct sadb_protocol *sab; |
| 1833 | union sockaddr_union *ssrc; |
| 1834 | int exists = 0; |
| 1835 | |
| 1836 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 1837 | if ((rnh = spd_table_add(rdomain)) == NULL((void *)0)) { |
| 1838 | rval = ENOMEM12; |
| 1839 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1840 | goto ret; |
| 1841 | } |
| 1842 | |
| 1843 | sab = (struct sadb_protocol *) headers[SADB_X_EXT_FLOW_TYPE20]; |
| 1844 | |
| 1845 | if ((sab->sadb_protocol_direction != IPSP_DIRECTION_IN0x1) && |
| 1846 | (sab->sadb_protocol_direction != IPSP_DIRECTION_OUT0x2)) { |
| 1847 | rval = EINVAL22; |
| 1848 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1849 | goto ret; |
| 1850 | } |
| 1851 | |
| 1852 | /* If the security protocol wasn't specified, pretend it was ESP */ |
| 1853 | if (smsg->sadb_msg_satype == 0) |
| 1854 | smsg->sadb_msg_satype = SADB_SATYPE_ESP2; |
| 1855 | |
| 1856 | if (headers[SADB_EXT_ADDRESS_DST6]) |
| 1857 | sunionp = (union sockaddr_union *) |
| 1858 | (headers[SADB_EXT_ADDRESS_DST6] + |
| 1859 | sizeof(struct sadb_address)); |
| 1860 | else |
| 1861 | sunionp = NULL((void *)0); |
| 1862 | |
| 1863 | if (headers[SADB_EXT_ADDRESS_SRC5]) |
| 1864 | ssrc = (union sockaddr_union *) |
| 1865 | (headers[SADB_EXT_ADDRESS_SRC5] + |
| 1866 | sizeof(struct sadb_address)); |
| 1867 | else |
| 1868 | ssrc = NULL((void *)0); |
| 1869 | |
| 1870 | if ((rval = import_flow(&encapdst, &encapnetmask, |
| 1871 | headers[SADB_X_EXT_SRC_FLOW21], headers[SADB_X_EXT_SRC_MASK17], |
| 1872 | headers[SADB_X_EXT_DST_FLOW22], headers[SADB_X_EXT_DST_MASK18], |
| 1873 | headers[SADB_X_EXT_PROTOCOL19], |
| 1874 | headers[SADB_X_EXT_FLOW_TYPE20]))) { |
| 1875 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1876 | goto ret; |
| 1877 | } |
| 1878 | |
| 1879 | /* Determine whether the exact same SPD entry already exists. */ |
| 1880 | if ((rn = rn_match(&encapdst, rnh)) != NULL((void *)0)) { |
| 1881 | ipo = (struct ipsec_policy *)rn; |
| 1882 | |
| 1883 | /* Verify that the entry is identical */ |
| 1884 | if (bcmp(&ipo->ipo_addr, &encapdst, |
| 1885 | sizeof(struct sockaddr_encap)) || |
| 1886 | bcmp(&ipo->ipo_mask, &encapnetmask, |
| 1887 | sizeof(struct sockaddr_encap))) |
| 1888 | ipo = NULL((void *)0); /* Fall through */ |
| 1889 | else |
| 1890 | exists = 1; |
| 1891 | } else |
| 1892 | ipo = NULL((void *)0); |
| 1893 | |
| 1894 | /* |
| 1895 | * If the existing policy is static, only delete or update |
| 1896 | * it if the new one is also static. |
| 1897 | */ |
| 1898 | if (exists && (ipo->ipo_flags & IPSP_POLICY_STATIC0x0002)) { |
| 1899 | if (!(sab->sadb_protocol_flags & |
| 1900 | SADB_X_POLICYFLAGS_POLICY0x0001)) { |
| 1901 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1902 | goto ret; |
| 1903 | } |
| 1904 | } |
| 1905 | |
| 1906 | /* Delete ? */ |
| 1907 | if (delflag) { |
| 1908 | if (exists) { |
| 1909 | rval = ipsec_delete_policy(ipo); |
| 1910 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1911 | goto ret; |
| 1912 | } |
| 1913 | |
| 1914 | /* If we were asked to delete something non-existent, error. */ |
| 1915 | rval = ESRCH3; |
| 1916 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1917 | break; |
| 1918 | } |
| 1919 | |
| 1920 | if (!exists) { |
| 1921 | /* Allocate policy entry */ |
| 1922 | ipo = pool_get(&ipsec_policy_pool, PR_NOWAIT0x0002|PR_ZERO0x0008); |
| 1923 | if (ipo == NULL((void *)0)) { |
| 1924 | rval = ENOMEM12; |
| 1925 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1926 | goto ret; |
| 1927 | } |
| 1928 | } |
| 1929 | |
| 1930 | switch (sab->sadb_protocol_proto) { |
| 1931 | case SADB_X_FLOW_TYPE_USE1: |
| 1932 | ipo->ipo_type = IPSP_IPSEC_USE0; |
| 1933 | break; |
| 1934 | |
| 1935 | case SADB_X_FLOW_TYPE_ACQUIRE2: |
| 1936 | ipo->ipo_type = IPSP_IPSEC_ACQUIRE1; |
| 1937 | break; |
| 1938 | |
| 1939 | case SADB_X_FLOW_TYPE_REQUIRE3: |
| 1940 | ipo->ipo_type = IPSP_IPSEC_REQUIRE2; |
| 1941 | break; |
| 1942 | |
| 1943 | case SADB_X_FLOW_TYPE_DENY5: |
| 1944 | ipo->ipo_type = IPSP_DENY4; |
| 1945 | break; |
| 1946 | |
| 1947 | case SADB_X_FLOW_TYPE_BYPASS4: |
| 1948 | ipo->ipo_type = IPSP_PERMIT3; |
| 1949 | break; |
| 1950 | |
| 1951 | case SADB_X_FLOW_TYPE_DONTACQ6: |
| 1952 | ipo->ipo_type = IPSP_IPSEC_DONTACQ5; |
| 1953 | break; |
| 1954 | |
| 1955 | default: |
| 1956 | if (!exists) |
| 1957 | pool_put(&ipsec_policy_pool, ipo); |
| 1958 | else |
| 1959 | ipsec_delete_policy(ipo); |
| 1960 | |
| 1961 | rval = EINVAL22; |
| 1962 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1963 | goto ret; |
| 1964 | } |
| 1965 | |
| 1966 | if (sab->sadb_protocol_flags & SADB_X_POLICYFLAGS_POLICY0x0001) |
| 1967 | ipo->ipo_flags |= IPSP_POLICY_STATIC0x0002; |
| 1968 | |
| 1969 | if (sunionp) |
| 1970 | bcopy(sunionp, &ipo->ipo_dst, |
| 1971 | sizeof(union sockaddr_union)); |
| 1972 | else |
| 1973 | bzero(&ipo->ipo_dst, sizeof(union sockaddr_union))__builtin_bzero((&ipo->ipo_dst), (sizeof(union sockaddr_union ))); |
| 1974 | |
| 1975 | if (ssrc) |
| 1976 | bcopy(ssrc, &ipo->ipo_src, |
| 1977 | sizeof(union sockaddr_union)); |
| 1978 | else |
| 1979 | bzero(&ipo->ipo_src, sizeof(union sockaddr_union))__builtin_bzero((&ipo->ipo_src), (sizeof(union sockaddr_union ))); |
| 1980 | |
| 1981 | ipo->ipo_sproto = SADB_X_GETSPROTO(smsg->sadb_msg_satype)( (smsg->sadb_msg_satype) == 1 ? 51 : (smsg->sadb_msg_satype ) == 2 ? 50 : (smsg->sadb_msg_satype) == 8 ? 6 : (smsg-> sadb_msg_satype) == 9 ? 108: 4 ); |
| 1982 | |
| 1983 | if (ipo->ipo_ids) { |
| 1984 | ipsp_ids_free(ipo->ipo_ids); |
| 1985 | ipo->ipo_ids = NULL((void *)0); |
| 1986 | } |
| 1987 | |
| 1988 | if ((sid = headers[SADB_EXT_IDENTITY_SRC10]) != NULL((void *)0) && |
| 1989 | (did = headers[SADB_EXT_IDENTITY_DST11]) != NULL((void *)0)) { |
| 1990 | import_identities(&ipo->ipo_ids, 0, sid, did); |
| 1991 | if (ipo->ipo_ids == NULL((void *)0)) { |
| 1992 | if (exists) |
| 1993 | ipsec_delete_policy(ipo); |
| 1994 | else |
| 1995 | pool_put(&ipsec_policy_pool, ipo); |
| 1996 | rval = ENOBUFS55; |
| 1997 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 1998 | goto ret; |
| 1999 | } |
| 2000 | } |
| 2001 | |
| 2002 | /* Flow type */ |
| 2003 | if (!exists) { |
| 2004 | /* Initialize policy entry */ |
| 2005 | bcopy(&encapdst, &ipo->ipo_addr, |
| 2006 | sizeof(struct sockaddr_encap)); |
| 2007 | bcopy(&encapnetmask, &ipo->ipo_mask, |
| 2008 | sizeof(struct sockaddr_encap)); |
| 2009 | |
| 2010 | TAILQ_INIT(&ipo->ipo_acquires)do { (&ipo->ipo_acquires)->tqh_first = ((void *)0); (&ipo->ipo_acquires)->tqh_last = &(&ipo-> ipo_acquires)->tqh_first; } while (0); |
| 2011 | ipo->ipo_rdomain = rdomain; |
| 2012 | refcnt_init(&ipo->ipo_refcnt); |
| 2013 | |
| 2014 | /* Add SPD entry */ |
| 2015 | if ((rnh = spd_table_get(rdomain)) == NULL((void *)0) || |
| 2016 | (rn = rn_addroute((caddr_t)&ipo->ipo_addr, |
Although the value stored to 'rn' is used in the enclosing expression, the value is never actually read from 'rn' | |
| 2017 | (caddr_t)&ipo->ipo_mask, rnh, |
| 2018 | ipo->ipo_nodes, 0)) == NULL((void *)0)) { |
| 2019 | /* Remove from linked list of policies on TDB */ |
| 2020 | mtx_enter(&ipo_tdb_mtx); |
| 2021 | if (ipo->ipo_tdb != NULL((void *)0)) { |
| 2022 | TAILQ_REMOVE(do { if (((ipo)->ipo_tdb_next.tqe_next) != ((void *)0)) (ipo )->ipo_tdb_next.tqe_next->ipo_tdb_next.tqe_prev = (ipo) ->ipo_tdb_next.tqe_prev; else (&ipo->ipo_tdb->tdb_policy_head )->tqh_last = (ipo)->ipo_tdb_next.tqe_prev; *(ipo)-> ipo_tdb_next.tqe_prev = (ipo)->ipo_tdb_next.tqe_next; ((ipo )->ipo_tdb_next.tqe_prev) = ((void *)-1); ((ipo)->ipo_tdb_next .tqe_next) = ((void *)-1); } while (0) |
| 2023 | &ipo->ipo_tdb->tdb_policy_head,do { if (((ipo)->ipo_tdb_next.tqe_next) != ((void *)0)) (ipo )->ipo_tdb_next.tqe_next->ipo_tdb_next.tqe_prev = (ipo) ->ipo_tdb_next.tqe_prev; else (&ipo->ipo_tdb->tdb_policy_head )->tqh_last = (ipo)->ipo_tdb_next.tqe_prev; *(ipo)-> ipo_tdb_next.tqe_prev = (ipo)->ipo_tdb_next.tqe_next; ((ipo )->ipo_tdb_next.tqe_prev) = ((void *)-1); ((ipo)->ipo_tdb_next .tqe_next) = ((void *)-1); } while (0) |
| 2024 | ipo, ipo_tdb_next)do { if (((ipo)->ipo_tdb_next.tqe_next) != ((void *)0)) (ipo )->ipo_tdb_next.tqe_next->ipo_tdb_next.tqe_prev = (ipo) ->ipo_tdb_next.tqe_prev; else (&ipo->ipo_tdb->tdb_policy_head )->tqh_last = (ipo)->ipo_tdb_next.tqe_prev; *(ipo)-> ipo_tdb_next.tqe_prev = (ipo)->ipo_tdb_next.tqe_next; ((ipo )->ipo_tdb_next.tqe_prev) = ((void *)-1); ((ipo)->ipo_tdb_next .tqe_next) = ((void *)-1); } while (0); |
| 2025 | tdb_unref(ipo->ipo_tdb); |
| 2026 | ipo->ipo_tdb = NULL((void *)0); |
| 2027 | } |
| 2028 | mtx_leave(&ipo_tdb_mtx); |
| 2029 | if (ipo->ipo_ids) |
| 2030 | ipsp_ids_free(ipo->ipo_ids); |
| 2031 | pool_put(&ipsec_policy_pool, ipo); |
| 2032 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 2033 | goto ret; |
| 2034 | } |
| 2035 | TAILQ_INSERT_HEAD(&ipsec_policy_head, ipo, ipo_list)do { if (((ipo)->ipo_list.tqe_next = (&ipsec_policy_head )->tqh_first) != ((void *)0)) (&ipsec_policy_head)-> tqh_first->ipo_list.tqe_prev = &(ipo)->ipo_list.tqe_next ; else (&ipsec_policy_head)->tqh_last = &(ipo)-> ipo_list.tqe_next; (&ipsec_policy_head)->tqh_first = ( ipo); (ipo)->ipo_list.tqe_prev = &(&ipsec_policy_head )->tqh_first; } while (0); |
| 2036 | ipsec_in_use++; |
| 2037 | } else { |
| 2038 | ipo->ipo_last_searched = ipo->ipo_flags = 0; |
| 2039 | } |
| 2040 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 2041 | } |
| 2042 | break; |
| 2043 | |
| 2044 | case SADB_X_PROMISC11: |
| 2045 | if (len >= 2 * sizeof(struct sadb_msg)) { |
| 2046 | struct mbuf *packet; |
| 2047 | |
| 2048 | if ((rval = pfdatatopacket(message, len, &packet)) != 0) |
| 2049 | goto ret; |
| 2050 | |
| 2051 | SRPL_FOREACH(bkp, &sr, &pkptable.pkp_list, kcb_list)for ((bkp) = srp_enter((&sr), &(&pkptable.pkp_list )->sl_head); (bkp) != ((void *)0); (bkp) = srp_follow((& sr), &(bkp)->kcb_list.se_next)) { |
| 2052 | if (bkp == kp || bkp->kcb_rdomain != kp->kcb_rdomain) |
| 2053 | continue; |
| 2054 | |
| 2055 | if (!smsg->sadb_msg_seq || |
| 2056 | (smsg->sadb_msg_seq == kp->kcb_pid)) { |
| 2057 | keylock(bkp)solock((bkp)->kcb_socket); |
| 2058 | pfkey_sendup(bkp, packet, 1); |
| 2059 | keyunlock(bkp)sounlock((bkp)->kcb_socket); |
| 2060 | } |
| 2061 | } |
| 2062 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
| 2063 | |
| 2064 | m_freem(packet); |
| 2065 | } else { |
| 2066 | if (len != sizeof(struct sadb_msg)) { |
| 2067 | rval = EINVAL22; |
| 2068 | goto ret; |
| 2069 | } |
| 2070 | |
| 2071 | keylock(kp)solock((kp)->kcb_socket); |
| 2072 | i = (kp->kcb_flags & |
| 2073 | PFKEYV2_SOCKETFLAGS_PROMISC2) ? 1 : 0; |
| 2074 | j = smsg->sadb_msg_satype ? 1 : 0; |
| 2075 | |
| 2076 | if (i ^ j) { |
| 2077 | if (j) { |
| 2078 | kp->kcb_flags |= |
| 2079 | PFKEYV2_SOCKETFLAGS_PROMISC2; |
| 2080 | mtx_enter(&pfkeyv2_mtx); |
| 2081 | npromisc++; |
| 2082 | mtx_leave(&pfkeyv2_mtx); |
| 2083 | } else { |
| 2084 | kp->kcb_flags &= |
| 2085 | ~PFKEYV2_SOCKETFLAGS_PROMISC2; |
| 2086 | mtx_enter(&pfkeyv2_mtx); |
| 2087 | npromisc--; |
| 2088 | mtx_leave(&pfkeyv2_mtx); |
| 2089 | } |
| 2090 | } |
| 2091 | keyunlock(kp)sounlock((kp)->kcb_socket); |
| 2092 | } |
| 2093 | |
| 2094 | break; |
| 2095 | |
| 2096 | default: |
| 2097 | rval = EINVAL22; |
| 2098 | goto ret; |
| 2099 | } |
| 2100 | |
| 2101 | ret: |
| 2102 | if (rval) { |
| 2103 | if ((rval == EINVAL22) || (rval == ENOMEM12) || (rval == ENOBUFS55)) |
| 2104 | goto realret; |
| 2105 | |
| 2106 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 2107 | headers[i] = NULL((void *)0); |
| 2108 | |
| 2109 | smsg->sadb_msg_errno = abs(rval); |
| 2110 | } else { |
| 2111 | uint64_t seen = 0LL; |
| 2112 | |
| 2113 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 2114 | if (headers[i]) |
| 2115 | seen |= (1LL << i); |
| 2116 | |
| 2117 | if ((seen & sadb_exts_allowed_out[smsg->sadb_msg_type]) |
| 2118 | != seen) { |
| 2119 | rval = EPERM1; |
| 2120 | goto realret; |
| 2121 | } |
| 2122 | |
| 2123 | if ((seen & sadb_exts_required_out[smsg->sadb_msg_type]) != |
| 2124 | sadb_exts_required_out[smsg->sadb_msg_type]) { |
| 2125 | rval = EPERM1; |
| 2126 | goto realret; |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | rval = pfkeyv2_sendmessage(headers, mode, so, 0, 0, kp->kcb_rdomain); |
| 2131 | |
| 2132 | realret: |
| 2133 | |
| 2134 | if (freeme != NULL((void *)0)) |
| 2135 | explicit_bzero(freeme, freeme_sz); |
| 2136 | free(freeme, M_PFKEY74, freeme_sz); |
| 2137 | free(freeme2, M_PFKEY74, freeme2_sz); |
| 2138 | free(freeme3, M_PFKEY74, freeme3_sz); |
| 2139 | |
| 2140 | explicit_bzero(message, len); |
| 2141 | free(message, M_PFKEY74, len); |
| 2142 | |
| 2143 | free(sa1, M_PFKEY74, sizeof(*sa1)); |
| 2144 | |
| 2145 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 2146 | tdb_unref(sa2); |
| 2147 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 2148 | |
| 2149 | return (rval); |
| 2150 | } |
| 2151 | |
| 2152 | /* |
| 2153 | * Send an ACQUIRE message to key management, to get a new SA. |
| 2154 | */ |
| 2155 | int |
| 2156 | pfkeyv2_acquire(struct ipsec_policy *ipo, union sockaddr_union *gw, |
| 2157 | union sockaddr_union *laddr, u_int32_t *seq, struct sockaddr_encap *ddst) |
| 2158 | { |
| 2159 | void *p, *headers[SADB_EXT_MAX40 + 1], *buffer = NULL((void *)0); |
| 2160 | struct sadb_comb *sadb_comb; |
| 2161 | struct sadb_address *sadd; |
| 2162 | struct sadb_prop *sa_prop; |
| 2163 | struct sadb_msg *smsg; |
| 2164 | int rval = 0; |
| 2165 | int i, j, registered; |
| 2166 | |
| 2167 | mtx_enter(&pfkeyv2_mtx); |
| 2168 | *seq = pfkeyv2_seq++; |
| 2169 | |
| 2170 | registered = nregistered; |
| 2171 | mtx_leave(&pfkeyv2_mtx); |
| 2172 | |
| 2173 | if (!registered) { |
| 2174 | rval = ESRCH3; |
| 2175 | goto ret; |
| 2176 | } |
| 2177 | |
| 2178 | /* How large a buffer do we need... XXX we only do one proposal for now */ |
| 2179 | i = sizeof(struct sadb_msg) + |
| 2180 | (laddr == NULL((void *)0) ? 0 : sizeof(struct sadb_address) + |
| 2181 | PADUP(ipo->ipo_src.sa.sa_len)(((ipo->ipo_src.sa.sa_len) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1))) + |
| 2182 | sizeof(struct sadb_address) + PADUP(gw->sa.sa_len)(((gw->sa.sa_len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t ) - 1)) + |
| 2183 | sizeof(struct sadb_prop) + 1 * sizeof(struct sadb_comb); |
| 2184 | |
| 2185 | if (ipo->ipo_ids) { |
| 2186 | i += sizeof(struct sadb_ident) + PADUP(ipo->ipo_ids->id_local->len)(((ipo->ipo_ids->id_local->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2187 | i += sizeof(struct sadb_ident) + PADUP(ipo->ipo_ids->id_remote->len)(((ipo->ipo_ids->id_remote->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2188 | } |
| 2189 | |
| 2190 | /* Allocate */ |
| 2191 | if (!(p = malloc(i, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 2192 | rval = ENOMEM12; |
| 2193 | goto ret; |
| 2194 | } |
| 2195 | |
| 2196 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 2197 | |
| 2198 | buffer = p; |
| 2199 | |
| 2200 | headers[0] = p; |
| 2201 | p += sizeof(struct sadb_msg); |
| 2202 | |
| 2203 | smsg = (struct sadb_msg *) headers[0]; |
| 2204 | smsg->sadb_msg_version = PF_KEY_V22; |
| 2205 | smsg->sadb_msg_type = SADB_ACQUIRE6; |
| 2206 | smsg->sadb_msg_len = i / sizeof(uint64_t); |
| 2207 | smsg->sadb_msg_seq = *seq; |
| 2208 | |
| 2209 | if (ipo->ipo_sproto == IPPROTO_ESP50) |
| 2210 | smsg->sadb_msg_satype = SADB_SATYPE_ESP2; |
| 2211 | else if (ipo->ipo_sproto == IPPROTO_AH51) |
| 2212 | smsg->sadb_msg_satype = SADB_SATYPE_AH1; |
| 2213 | else if (ipo->ipo_sproto == IPPROTO_IPCOMP108) |
| 2214 | smsg->sadb_msg_satype = SADB_X_SATYPE_IPCOMP9; |
| 2215 | |
| 2216 | if (laddr) { |
| 2217 | headers[SADB_EXT_ADDRESS_SRC5] = p; |
| 2218 | p += sizeof(struct sadb_address) + PADUP(laddr->sa.sa_len)(((laddr->sa.sa_len) + sizeof(uint64_t) - 1) & ~(sizeof (uint64_t) - 1)); |
| 2219 | sadd = (struct sadb_address *) headers[SADB_EXT_ADDRESS_SRC5]; |
| 2220 | sadd->sadb_address_len = (sizeof(struct sadb_address) + |
| 2221 | laddr->sa.sa_len + sizeof(uint64_t) - 1) / |
| 2222 | sizeof(uint64_t); |
| 2223 | bcopy(laddr, headers[SADB_EXT_ADDRESS_SRC5] + |
| 2224 | sizeof(struct sadb_address), laddr->sa.sa_len); |
| 2225 | } |
| 2226 | |
| 2227 | headers[SADB_EXT_ADDRESS_DST6] = p; |
| 2228 | p += sizeof(struct sadb_address) + PADUP(gw->sa.sa_len)(((gw->sa.sa_len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t ) - 1)); |
| 2229 | sadd = (struct sadb_address *) headers[SADB_EXT_ADDRESS_DST6]; |
| 2230 | sadd->sadb_address_len = (sizeof(struct sadb_address) + |
| 2231 | gw->sa.sa_len + sizeof(uint64_t) - 1) / sizeof(uint64_t); |
| 2232 | bcopy(gw, headers[SADB_EXT_ADDRESS_DST6] + sizeof(struct sadb_address), |
| 2233 | gw->sa.sa_len); |
| 2234 | |
| 2235 | if (ipo->ipo_ids) |
| 2236 | export_identities(&p, ipo->ipo_ids, 0, headers); |
| 2237 | |
| 2238 | headers[SADB_EXT_PROPOSAL13] = p; |
| 2239 | p += sizeof(struct sadb_prop); |
| 2240 | sa_prop = (struct sadb_prop *) headers[SADB_EXT_PROPOSAL13]; |
| 2241 | sa_prop->sadb_prop_num = 1; /* XXX One proposal only */ |
| 2242 | sa_prop->sadb_prop_len = (sizeof(struct sadb_prop) + |
| 2243 | (sizeof(struct sadb_comb) * sa_prop->sadb_prop_num)) / |
| 2244 | sizeof(uint64_t); |
| 2245 | |
| 2246 | sadb_comb = p; |
| 2247 | |
| 2248 | /* XXX Should actually ask the crypto layer what's supported */ |
| 2249 | for (j = 0; j < sa_prop->sadb_prop_num; j++) { |
| 2250 | sadb_comb->sadb_comb_flags = 0; |
| 2251 | #ifdef IPSEC1 |
| 2252 | if (ipsec_require_pfs) |
| 2253 | sadb_comb->sadb_comb_flags |= SADB_SAFLAGS_PFS0x001; |
| 2254 | |
| 2255 | /* Set the encryption algorithm */ |
| 2256 | if (ipo->ipo_sproto == IPPROTO_ESP50) { |
| 2257 | if (!strncasecmp(ipsec_def_enc, "aes", |
| 2258 | sizeof("aes"))) { |
| 2259 | sadb_comb->sadb_comb_encrypt = SADB_X_EALG_AES12; |
| 2260 | sadb_comb->sadb_comb_encrypt_minbits = 128; |
| 2261 | sadb_comb->sadb_comb_encrypt_maxbits = 256; |
| 2262 | } else if (!strncasecmp(ipsec_def_enc, "aesctr", |
| 2263 | sizeof("aesctr"))) { |
| 2264 | sadb_comb->sadb_comb_encrypt = SADB_X_EALG_AESCTR13; |
| 2265 | sadb_comb->sadb_comb_encrypt_minbits = 128+32; |
| 2266 | sadb_comb->sadb_comb_encrypt_maxbits = 256+32; |
| 2267 | } else if (!strncasecmp(ipsec_def_enc, "3des", |
| 2268 | sizeof("3des"))) { |
| 2269 | sadb_comb->sadb_comb_encrypt = SADB_EALG_3DESCBC3; |
| 2270 | sadb_comb->sadb_comb_encrypt_minbits = 192; |
| 2271 | sadb_comb->sadb_comb_encrypt_maxbits = 192; |
| 2272 | } else if (!strncasecmp(ipsec_def_enc, "blowfish", |
| 2273 | sizeof("blowfish"))) { |
| 2274 | sadb_comb->sadb_comb_encrypt = SADB_X_EALG_BLF7; |
| 2275 | sadb_comb->sadb_comb_encrypt_minbits = 40; |
| 2276 | sadb_comb->sadb_comb_encrypt_maxbits = BLF_MAXKEYLEN((16 -2)*4) * 8; |
| 2277 | } else if (!strncasecmp(ipsec_def_enc, "cast128", |
| 2278 | sizeof("cast128"))) { |
| 2279 | sadb_comb->sadb_comb_encrypt = SADB_X_EALG_CAST6; |
| 2280 | sadb_comb->sadb_comb_encrypt_minbits = 40; |
| 2281 | sadb_comb->sadb_comb_encrypt_maxbits = 128; |
| 2282 | } |
| 2283 | } else if (ipo->ipo_sproto == IPPROTO_IPCOMP108) { |
| 2284 | /* Set the compression algorithm */ |
| 2285 | if (!strncasecmp(ipsec_def_comp, "deflate", |
| 2286 | sizeof("deflate"))) { |
| 2287 | sadb_comb->sadb_comb_encrypt = SADB_X_CALG_DEFLATE2; |
| 2288 | sadb_comb->sadb_comb_encrypt_minbits = 0; |
| 2289 | sadb_comb->sadb_comb_encrypt_maxbits = 0; |
| 2290 | } |
| 2291 | } |
| 2292 | |
| 2293 | /* Set the authentication algorithm */ |
| 2294 | if (!strncasecmp(ipsec_def_auth, "hmac-sha1", |
| 2295 | sizeof("hmac-sha1"))) { |
| 2296 | sadb_comb->sadb_comb_auth = SADB_AALG_SHA1HMAC3; |
| 2297 | sadb_comb->sadb_comb_auth_minbits = 160; |
| 2298 | sadb_comb->sadb_comb_auth_maxbits = 160; |
| 2299 | } else if (!strncasecmp(ipsec_def_auth, "hmac-ripemd160", |
| 2300 | sizeof("hmac_ripemd160"))) { |
| 2301 | sadb_comb->sadb_comb_auth = SADB_X_AALG_RIPEMD160HMAC8; |
| 2302 | sadb_comb->sadb_comb_auth_minbits = 160; |
| 2303 | sadb_comb->sadb_comb_auth_maxbits = 160; |
| 2304 | } else if (!strncasecmp(ipsec_def_auth, "hmac-md5", |
| 2305 | sizeof("hmac-md5"))) { |
| 2306 | sadb_comb->sadb_comb_auth = SADB_AALG_MD5HMAC2; |
| 2307 | sadb_comb->sadb_comb_auth_minbits = 128; |
| 2308 | sadb_comb->sadb_comb_auth_maxbits = 128; |
| 2309 | } else if (!strncasecmp(ipsec_def_auth, "hmac-sha2-256", |
| 2310 | sizeof("hmac-sha2-256"))) { |
| 2311 | sadb_comb->sadb_comb_auth = SADB_X_AALG_SHA2_2565; |
| 2312 | sadb_comb->sadb_comb_auth_minbits = 256; |
| 2313 | sadb_comb->sadb_comb_auth_maxbits = 256; |
| 2314 | } else if (!strncasecmp(ipsec_def_auth, "hmac-sha2-384", |
| 2315 | sizeof("hmac-sha2-384"))) { |
| 2316 | sadb_comb->sadb_comb_auth = SADB_X_AALG_SHA2_3846; |
| 2317 | sadb_comb->sadb_comb_auth_minbits = 384; |
| 2318 | sadb_comb->sadb_comb_auth_maxbits = 384; |
| 2319 | } else if (!strncasecmp(ipsec_def_auth, "hmac-sha2-512", |
| 2320 | sizeof("hmac-sha2-512"))) { |
| 2321 | sadb_comb->sadb_comb_auth = SADB_X_AALG_SHA2_5127; |
| 2322 | sadb_comb->sadb_comb_auth_minbits = 512; |
| 2323 | sadb_comb->sadb_comb_auth_maxbits = 512; |
| 2324 | } |
| 2325 | |
| 2326 | sadb_comb->sadb_comb_soft_allocations = ipsec_soft_allocations; |
| 2327 | sadb_comb->sadb_comb_hard_allocations = ipsec_exp_allocations; |
| 2328 | |
| 2329 | sadb_comb->sadb_comb_soft_bytes = ipsec_soft_bytes; |
| 2330 | sadb_comb->sadb_comb_hard_bytes = ipsec_exp_bytes; |
| 2331 | |
| 2332 | sadb_comb->sadb_comb_soft_addtime = ipsec_soft_timeout; |
| 2333 | sadb_comb->sadb_comb_hard_addtime = ipsec_exp_timeout; |
| 2334 | |
| 2335 | sadb_comb->sadb_comb_soft_usetime = ipsec_soft_first_use; |
| 2336 | sadb_comb->sadb_comb_hard_usetime = ipsec_exp_first_use; |
| 2337 | #endif |
| 2338 | sadb_comb++; |
| 2339 | } |
| 2340 | |
| 2341 | /* Send the ACQUIRE message to all compliant registered listeners. */ |
| 2342 | if ((rval = pfkeyv2_sendmessage(headers, |
| 2343 | PFKEYV2_SENDMESSAGE_REGISTERED2, NULL((void *)0), smsg->sadb_msg_satype, 0, |
| 2344 | ipo->ipo_rdomain)) != 0) |
| 2345 | goto ret; |
| 2346 | |
| 2347 | rval = 0; |
| 2348 | ret: |
| 2349 | if (buffer != NULL((void *)0)) { |
| 2350 | explicit_bzero(buffer, i); |
| 2351 | free(buffer, M_PFKEY74, i); |
| 2352 | } |
| 2353 | |
| 2354 | return (rval); |
| 2355 | } |
| 2356 | |
| 2357 | /* |
| 2358 | * Notify key management that an expiration went off. The second argument |
| 2359 | * specifies the type of expiration (soft or hard). |
| 2360 | */ |
| 2361 | int |
| 2362 | pfkeyv2_expire(struct tdb *tdb, u_int16_t type) |
| 2363 | { |
| 2364 | void *p, *headers[SADB_EXT_MAX40+1], *buffer = NULL((void *)0); |
| 2365 | struct sadb_msg *smsg; |
| 2366 | int rval = 0; |
| 2367 | int i; |
| 2368 | |
| 2369 | NET_ASSERT_LOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s != 0x0001UL && _s != 0x0002UL)) splassert_fail (0x0002UL, _s, __func__); } while (0); |
| 2370 | |
| 2371 | switch (tdb->tdb_sproto) { |
| 2372 | case IPPROTO_AH51: |
| 2373 | case IPPROTO_ESP50: |
| 2374 | case IPPROTO_IPIP4: |
| 2375 | case IPPROTO_IPCOMP108: |
| 2376 | #ifdef TCP_SIGNATURE1 |
| 2377 | case IPPROTO_TCP6: |
| 2378 | #endif /* TCP_SIGNATURE */ |
| 2379 | break; |
| 2380 | |
| 2381 | default: |
| 2382 | rval = EOPNOTSUPP45; |
| 2383 | goto ret; |
| 2384 | } |
| 2385 | |
| 2386 | i = sizeof(struct sadb_msg) + sizeof(struct sadb_sa) + |
| 2387 | 2 * sizeof(struct sadb_lifetime) + |
| 2388 | sizeof(struct sadb_address) + PADUP(tdb->tdb_src.sa.sa_len)(((tdb->tdb_src.sa.sa_len) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)) + |
| 2389 | sizeof(struct sadb_address) + PADUP(tdb->tdb_dst.sa.sa_len)(((tdb->tdb_dst.sa.sa_len) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 2390 | |
| 2391 | if (!(p = malloc(i, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 2392 | rval = ENOMEM12; |
| 2393 | goto ret; |
| 2394 | } |
| 2395 | |
| 2396 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 2397 | |
| 2398 | buffer = p; |
| 2399 | |
| 2400 | headers[0] = p; |
| 2401 | p += sizeof(struct sadb_msg); |
| 2402 | |
| 2403 | smsg = (struct sadb_msg *) headers[0]; |
| 2404 | smsg->sadb_msg_version = PF_KEY_V22; |
| 2405 | smsg->sadb_msg_type = SADB_EXPIRE8; |
| 2406 | smsg->sadb_msg_satype = tdb->tdb_satype; |
| 2407 | smsg->sadb_msg_len = i / sizeof(uint64_t); |
| 2408 | |
| 2409 | mtx_enter(&pfkeyv2_mtx); |
| 2410 | smsg->sadb_msg_seq = pfkeyv2_seq++; |
| 2411 | mtx_leave(&pfkeyv2_mtx); |
| 2412 | |
| 2413 | headers[SADB_EXT_SA1] = p; |
| 2414 | export_sa(&p, tdb); |
| 2415 | |
| 2416 | headers[SADB_EXT_LIFETIME_CURRENT2] = p; |
| 2417 | export_lifetime(&p, tdb, PFKEYV2_LIFETIME_CURRENT2); |
| 2418 | |
| 2419 | headers[type] = p; |
| 2420 | export_lifetime(&p, tdb, type == SADB_EXT_LIFETIME_SOFT4 ? |
| 2421 | PFKEYV2_LIFETIME_SOFT1 : PFKEYV2_LIFETIME_HARD0); |
| 2422 | |
| 2423 | headers[SADB_EXT_ADDRESS_SRC5] = p; |
| 2424 | export_address(&p, &tdb->tdb_src.sa); |
| 2425 | |
| 2426 | headers[SADB_EXT_ADDRESS_DST6] = p; |
| 2427 | export_address(&p, &tdb->tdb_dst.sa); |
| 2428 | |
| 2429 | if ((rval = pfkeyv2_sendmessage(headers, PFKEYV2_SENDMESSAGE_BROADCAST3, |
| 2430 | NULL((void *)0), 0, 0, tdb->tdb_rdomain)) != 0) |
| 2431 | goto ret; |
| 2432 | /* XXX */ |
| 2433 | if (tdb->tdb_rdomain != tdb->tdb_rdomain_post) |
| 2434 | if ((rval = pfkeyv2_sendmessage(headers, |
| 2435 | PFKEYV2_SENDMESSAGE_BROADCAST3, NULL((void *)0), 0, 0, |
| 2436 | tdb->tdb_rdomain_post)) != 0) |
| 2437 | goto ret; |
| 2438 | |
| 2439 | rval = 0; |
| 2440 | |
| 2441 | ret: |
| 2442 | if (buffer != NULL((void *)0)) { |
| 2443 | explicit_bzero(buffer, i); |
| 2444 | free(buffer, M_PFKEY74, i); |
| 2445 | } |
| 2446 | |
| 2447 | return (rval); |
| 2448 | } |
| 2449 | |
| 2450 | struct pfkeyv2_sysctl_walk { |
| 2451 | void *w_where; |
| 2452 | size_t w_len; |
| 2453 | int w_op; |
| 2454 | u_int8_t w_satype; |
| 2455 | }; |
| 2456 | |
| 2457 | int |
| 2458 | pfkeyv2_sysctl_walker(struct tdb *tdb, void *arg, int last) |
| 2459 | { |
| 2460 | struct pfkeyv2_sysctl_walk *w = (struct pfkeyv2_sysctl_walk *)arg; |
| 2461 | void *buffer = NULL((void *)0); |
| 2462 | int error = 0; |
| 2463 | int usedlen, buflen, i; |
| 2464 | |
| 2465 | if (w->w_satype != SADB_SATYPE_UNSPEC0 && |
| 2466 | w->w_satype != tdb->tdb_satype) |
| 2467 | return (0); |
| 2468 | |
| 2469 | if (w->w_where) { |
| 2470 | void *headers[SADB_EXT_MAX40+1]; |
| 2471 | struct sadb_msg msg; |
| 2472 | |
| 2473 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 2474 | if ((error = pfkeyv2_get(tdb, headers, &buffer, &buflen, |
| 2475 | &usedlen)) != 0) |
| 2476 | goto done; |
| 2477 | if (w->w_len < sizeof(msg) + usedlen) { |
| 2478 | error = ENOMEM12; |
| 2479 | goto done; |
| 2480 | } |
| 2481 | /* prepend header */ |
| 2482 | bzero(&msg, sizeof(msg))__builtin_bzero((&msg), (sizeof(msg))); |
| 2483 | msg.sadb_msg_version = PF_KEY_V22; |
| 2484 | msg.sadb_msg_satype = tdb->tdb_satype; |
| 2485 | msg.sadb_msg_type = SADB_DUMP10; |
| 2486 | msg.sadb_msg_len = (sizeof(msg) + usedlen) / sizeof(uint64_t); |
| 2487 | if ((error = copyout(&msg, w->w_where, sizeof(msg))) != 0) |
| 2488 | goto done; |
| 2489 | w->w_where += sizeof(msg); |
| 2490 | w->w_len -= sizeof(msg); |
| 2491 | /* set extension type */ |
| 2492 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 2493 | if (headers[i]) |
| 2494 | ((struct sadb_ext *) |
| 2495 | headers[i])->sadb_ext_type = i; |
| 2496 | if ((error = copyout(buffer, w->w_where, usedlen)) != 0) |
| 2497 | goto done; |
| 2498 | w->w_where += usedlen; |
| 2499 | w->w_len -= usedlen; |
| 2500 | } else { |
| 2501 | if ((error = pfkeyv2_get(tdb, NULL((void *)0), NULL((void *)0), &buflen, NULL((void *)0))) != 0) |
| 2502 | return (error); |
| 2503 | w->w_len += buflen; |
| 2504 | w->w_len += sizeof(struct sadb_msg); |
| 2505 | } |
| 2506 | |
| 2507 | done: |
| 2508 | if (buffer != NULL((void *)0)) { |
| 2509 | explicit_bzero(buffer, buflen); |
| 2510 | free(buffer, M_PFKEY74, buflen); |
| 2511 | } |
| 2512 | return (error); |
| 2513 | } |
| 2514 | |
| 2515 | int |
| 2516 | pfkeyv2_dump_policy(struct ipsec_policy *ipo, void **headers, void **buffer, |
| 2517 | int *lenp) |
| 2518 | { |
| 2519 | int i, rval, perm; |
| 2520 | void *p; |
| 2521 | |
| 2522 | /* Find how much space we need. */ |
| 2523 | i = 2 * sizeof(struct sadb_protocol); |
| 2524 | |
| 2525 | /* We'll need four of them: src, src mask, dst, dst mask. */ |
| 2526 | switch (ipo->ipo_addr.sen_type) { |
| 2527 | case SENT_IP40x0001: |
| 2528 | i += 4 * PADUP(sizeof(struct sockaddr_in))(((sizeof(struct sockaddr_in)) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 2529 | i += 4 * sizeof(struct sadb_address); |
| 2530 | break; |
| 2531 | #ifdef INET61 |
| 2532 | case SENT_IP60x0002: |
| 2533 | i += 4 * PADUP(sizeof(struct sockaddr_in6))(((sizeof(struct sockaddr_in6)) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2534 | i += 4 * sizeof(struct sadb_address); |
| 2535 | break; |
| 2536 | #endif /* INET6 */ |
| 2537 | default: |
| 2538 | return (EINVAL22); |
| 2539 | } |
| 2540 | |
| 2541 | /* Local address, might be zeroed. */ |
| 2542 | switch (ipo->ipo_src.sa.sa_family) { |
| 2543 | case 0: |
| 2544 | break; |
| 2545 | case AF_INET2: |
| 2546 | i += PADUP(sizeof(struct sockaddr_in))(((sizeof(struct sockaddr_in)) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 2547 | i += sizeof(struct sadb_address); |
| 2548 | break; |
| 2549 | #ifdef INET61 |
| 2550 | case AF_INET624: |
| 2551 | i += PADUP(sizeof(struct sockaddr_in6))(((sizeof(struct sockaddr_in6)) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2552 | i += sizeof(struct sadb_address); |
| 2553 | break; |
| 2554 | #endif /* INET6 */ |
| 2555 | default: |
| 2556 | return (EINVAL22); |
| 2557 | } |
| 2558 | |
| 2559 | /* Remote address, might be zeroed. XXX ??? */ |
| 2560 | switch (ipo->ipo_dst.sa.sa_family) { |
| 2561 | case 0: |
| 2562 | break; |
| 2563 | case AF_INET2: |
| 2564 | i += PADUP(sizeof(struct sockaddr_in))(((sizeof(struct sockaddr_in)) + sizeof(uint64_t) - 1) & ~ (sizeof(uint64_t) - 1)); |
| 2565 | i += sizeof(struct sadb_address); |
| 2566 | break; |
| 2567 | #ifdef INET61 |
| 2568 | case AF_INET624: |
| 2569 | i += PADUP(sizeof(struct sockaddr_in6))(((sizeof(struct sockaddr_in6)) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2570 | i += sizeof(struct sadb_address); |
| 2571 | break; |
| 2572 | #endif /* INET6 */ |
| 2573 | default: |
| 2574 | return (EINVAL22); |
| 2575 | } |
| 2576 | |
| 2577 | if (ipo->ipo_ids) { |
| 2578 | i += sizeof(struct sadb_ident) + PADUP(ipo->ipo_ids->id_local->len)(((ipo->ipo_ids->id_local->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2579 | i += sizeof(struct sadb_ident) + PADUP(ipo->ipo_ids->id_remote->len)(((ipo->ipo_ids->id_remote->len) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)); |
| 2580 | } |
| 2581 | |
| 2582 | if (lenp) |
| 2583 | *lenp = i; |
| 2584 | |
| 2585 | if (buffer == NULL((void *)0)) { |
| 2586 | rval = 0; |
| 2587 | goto ret; |
| 2588 | } |
| 2589 | |
| 2590 | if (!(p = malloc(i, M_PFKEY74, M_NOWAIT0x0002 | M_ZERO0x0008))) { |
| 2591 | rval = ENOMEM12; |
| 2592 | goto ret; |
| 2593 | } else |
| 2594 | *buffer = p; |
| 2595 | |
| 2596 | /* Local address. */ |
| 2597 | if (ipo->ipo_src.sa.sa_family) { |
| 2598 | headers[SADB_EXT_ADDRESS_SRC5] = p; |
| 2599 | export_address(&p, &ipo->ipo_src.sa); |
| 2600 | } |
| 2601 | |
| 2602 | /* Remote address. */ |
| 2603 | if (ipo->ipo_dst.sa.sa_family) { |
| 2604 | headers[SADB_EXT_ADDRESS_DST6] = p; |
| 2605 | export_address(&p, &ipo->ipo_dst.sa); |
| 2606 | } |
| 2607 | |
| 2608 | /* Get actual flow. */ |
| 2609 | export_flow(&p, ipo->ipo_type, &ipo->ipo_addr, &ipo->ipo_mask, |
| 2610 | headers); |
| 2611 | |
| 2612 | /* Add ids only when we are root. */ |
| 2613 | perm = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc); |
| 2614 | if (perm == 0 && ipo->ipo_ids) |
| 2615 | export_identities(&p, ipo->ipo_ids, 0, headers); |
| 2616 | |
| 2617 | rval = 0; |
| 2618 | ret: |
| 2619 | return (rval); |
| 2620 | } |
| 2621 | |
| 2622 | int |
| 2623 | pfkeyv2_sysctl_policydumper(struct ipsec_policy *ipo, void *arg, |
| 2624 | unsigned int tableid) |
| 2625 | { |
| 2626 | struct pfkeyv2_sysctl_walk *w = (struct pfkeyv2_sysctl_walk *)arg; |
| 2627 | void *buffer = NULL((void *)0); |
| 2628 | int i, buflen, error = 0; |
| 2629 | |
| 2630 | if (w->w_where) { |
| 2631 | void *headers[SADB_EXT_MAX40 + 1]; |
| 2632 | struct sadb_msg msg; |
| 2633 | |
| 2634 | bzero(headers, sizeof(headers))__builtin_bzero((headers), (sizeof(headers))); |
| 2635 | if ((error = pfkeyv2_dump_policy(ipo, headers, &buffer, |
| 2636 | &buflen)) != 0) |
| 2637 | goto done; |
| 2638 | if (w->w_len < buflen) { |
| 2639 | error = ENOMEM12; |
| 2640 | goto done; |
| 2641 | } |
| 2642 | /* prepend header */ |
| 2643 | bzero(&msg, sizeof(msg))__builtin_bzero((&msg), (sizeof(msg))); |
| 2644 | msg.sadb_msg_version = PF_KEY_V22; |
| 2645 | if (ipo->ipo_sproto == IPPROTO_ESP50) |
| 2646 | msg.sadb_msg_satype = SADB_SATYPE_ESP2; |
| 2647 | else if (ipo->ipo_sproto == IPPROTO_AH51) |
| 2648 | msg.sadb_msg_satype = SADB_SATYPE_AH1; |
| 2649 | else if (ipo->ipo_sproto == IPPROTO_IPCOMP108) |
| 2650 | msg.sadb_msg_satype = SADB_X_SATYPE_IPCOMP9; |
| 2651 | else if (ipo->ipo_sproto == IPPROTO_IPIP4) |
| 2652 | msg.sadb_msg_satype = SADB_X_SATYPE_IPIP7; |
| 2653 | msg.sadb_msg_type = SADB_X_SPDDUMP16; |
| 2654 | msg.sadb_msg_len = (sizeof(msg) + buflen) / sizeof(uint64_t); |
| 2655 | if ((error = copyout(&msg, w->w_where, sizeof(msg))) != 0) |
| 2656 | goto done; |
| 2657 | w->w_where += sizeof(msg); |
| 2658 | w->w_len -= sizeof(msg); |
| 2659 | /* set extension type */ |
| 2660 | for (i = 1; i <= SADB_EXT_MAX40; i++) |
| 2661 | if (headers[i]) |
| 2662 | ((struct sadb_ext *) |
| 2663 | headers[i])->sadb_ext_type = i; |
| 2664 | if ((error = copyout(buffer, w->w_where, buflen)) != 0) |
| 2665 | goto done; |
| 2666 | w->w_where += buflen; |
| 2667 | w->w_len -= buflen; |
| 2668 | } else { |
| 2669 | if ((error = pfkeyv2_dump_policy(ipo, NULL((void *)0), NULL((void *)0), |
| 2670 | &buflen)) != 0) |
| 2671 | goto done; |
| 2672 | w->w_len += buflen; |
| 2673 | w->w_len += sizeof(struct sadb_msg); |
| 2674 | } |
| 2675 | |
| 2676 | done: |
| 2677 | if (buffer) |
| 2678 | free(buffer, M_PFKEY74, buflen); |
| 2679 | return (error); |
| 2680 | } |
| 2681 | |
| 2682 | int |
| 2683 | pfkeyv2_policy_flush(struct ipsec_policy *ipo, void *arg, unsigned int tableid) |
| 2684 | { |
| 2685 | int error; |
| 2686 | |
| 2687 | error = ipsec_delete_policy(ipo); |
| 2688 | if (error == 0) |
| 2689 | error = EAGAIN35; |
| 2690 | |
| 2691 | return (error); |
| 2692 | } |
| 2693 | |
| 2694 | int |
| 2695 | pfkeyv2_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, |
| 2696 | void *new, size_t newlen) |
| 2697 | { |
| 2698 | struct pfkeyv2_sysctl_walk w; |
| 2699 | int error = EINVAL22; |
| 2700 | u_int rdomain; |
| 2701 | u_int tableid; |
| 2702 | |
| 2703 | if (new) |
| 2704 | return (EPERM1); |
| 2705 | if (namelen < 1) |
| 2706 | return (EINVAL22); |
| 2707 | w.w_op = name[0]; |
| 2708 | w.w_satype = name[1]; |
| 2709 | w.w_where = oldp; |
| 2710 | w.w_len = oldp ? *oldlenp : 0; |
| 2711 | |
| 2712 | if (namelen == 3) { |
| 2713 | tableid = name[2]; |
| 2714 | if (!rtable_exists(tableid)) |
| 2715 | return (ENOENT2); |
| 2716 | } else |
| 2717 | tableid = curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_rtableid; |
| 2718 | rdomain = rtable_l2(tableid); |
| 2719 | |
| 2720 | switch(w.w_op) { |
| 2721 | case NET_KEY_SADB_DUMP1: |
| 2722 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) |
| 2723 | return (error); |
| 2724 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
| 2725 | error = tdb_walk(rdomain, pfkeyv2_sysctl_walker, &w); |
| 2726 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
| 2727 | if (oldp) |
| 2728 | *oldlenp = w.w_where - oldp; |
| 2729 | else |
| 2730 | *oldlenp = w.w_len; |
| 2731 | break; |
| 2732 | |
| 2733 | case NET_KEY_SPD_DUMP2: |
| 2734 | NET_LOCK_SHARED()do { rw_enter_read(&netlock); } while (0); |
| 2735 | error = spd_table_walk(rdomain, |
| 2736 | pfkeyv2_sysctl_policydumper, &w); |
| 2737 | NET_UNLOCK_SHARED()do { rw_exit_read(&netlock); } while (0); |
| 2738 | if (oldp) |
| 2739 | *oldlenp = w.w_where - oldp; |
| 2740 | else |
| 2741 | *oldlenp = w.w_len; |
| 2742 | break; |
| 2743 | } |
| 2744 | |
| 2745 | return (error); |
| 2746 | } |