]> git.saurik.com Git - apple/xnu.git/blobdiff - bsd/netinet6/ah_input.c
xnu-1228.tar.gz
[apple/xnu.git] / bsd / netinet6 / ah_input.c
index 06340aa1e3840d7d2ef5e05d2b52a125b8ce3b9b..b79bf0895cdbf4ad708329c5b50e5c18ccd54df9 100644 (file)
 #define        KEYDEBUG(lev,arg)
 #endif
 
+#include <net/kpi_protocol.h>
+#include <netinet/kpi_ipfilter_var.h>
 
 #include <net/net_osdep.h>
 
 #define IPLEN_FLIPPED
 
-extern lck_mtx_t *sadb_mutex;
 #if INET
 extern struct protosw inetsw[];
 
@@ -108,10 +109,8 @@ ah4_input(struct mbuf *m, int off)
        struct secasvar *sav = NULL;
        u_int16_t nxt;
        size_t hlen;
-       int s;
        size_t stripsiz = 0;
-
-       lck_mtx_lock(sadb_mutex);
+       sa_family_t ifamily;
 
 #ifndef PULLDOWN_TEST
        if (m->m_len < off + sizeof(struct newah)) {
@@ -119,7 +118,7 @@ ah4_input(struct mbuf *m, int off)
                if (!m) {
                        ipseclog((LOG_DEBUG, "IPv4 AH input: can't pullup;"
                                "dropping the packet for simplicity\n"));
-                       ipsecstat.in_inval++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                        goto fail;
                }
        }
@@ -132,7 +131,7 @@ ah4_input(struct mbuf *m, int off)
        if (ah == NULL) {
                ipseclog((LOG_DEBUG, "IPv4 AH input: can't pullup;"
                        "dropping the packet for simplicity\n"));
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
 #endif
@@ -152,7 +151,7 @@ ah4_input(struct mbuf *m, int off)
                ipseclog((LOG_WARNING,
                    "IPv4 AH input: no key association found for spi %u\n",
                    (u_int32_t)ntohl(spi)));
-               ipsecstat.in_nosa++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_nosa);
                goto fail;
        }
        KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
@@ -162,7 +161,7 @@ ah4_input(struct mbuf *m, int off)
                ipseclog((LOG_DEBUG,
                    "IPv4 AH input: non-mature/dying SA found for spi %u\n",
                    (u_int32_t)ntohl(spi)));
-               ipsecstat.in_badspi++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_badspi);
                goto fail;
        }
 
@@ -171,7 +170,7 @@ ah4_input(struct mbuf *m, int off)
                ipseclog((LOG_DEBUG, "IPv4 AH input: "
                    "unsupported authentication algorithm for spi %u\n",
                    (u_int32_t)ntohl(spi)));
-               ipsecstat.in_badspi++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_badspi);
                goto fail;
        }
 
@@ -212,7 +211,7 @@ ah4_input(struct mbuf *m, int off)
                    "(%lu, should be at least %lu): %s\n",
                    (u_long)siz1, (u_long)siz,
                    ipsec4_logpacketstr(ip, spi)));
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
        if ((ah->ah_len << 2) - sizoff != siz1) {
@@ -220,7 +219,7 @@ ah4_input(struct mbuf *m, int off)
                    "(%d should be %lu): %s\n",
                    (ah->ah_len << 2) - sizoff, (u_long)siz1,
                    ipsec4_logpacketstr(ip, spi)));
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
 
@@ -229,7 +228,7 @@ ah4_input(struct mbuf *m, int off)
                m = m_pullup(m, off + sizeof(struct ah) + sizoff + siz1);
                if (!m) {
                        ipseclog((LOG_DEBUG, "IPv4 AH input: can't pullup\n"));
-                       ipsecstat.in_inval++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                        goto fail;
                }
 
@@ -241,7 +240,7 @@ ah4_input(struct mbuf *m, int off)
                sizeof(struct ah) + sizoff + siz1);
        if (ah == NULL) {
                ipseclog((LOG_DEBUG, "IPv4 AH input: can't pullup\n"));
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
 #endif
@@ -254,7 +253,7 @@ ah4_input(struct mbuf *m, int off)
                if (ipsec_chkreplay(ntohl(((struct newah *)ah)->ah_seq), sav))
                        ; /*okey*/
                else {
-                       ipsecstat.in_ahreplay++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_ahreplay);
                        ipseclog((LOG_WARNING,
                            "replay packet in IPv4 AH input: %s %s\n",
                            ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
@@ -270,7 +269,7 @@ ah4_input(struct mbuf *m, int off)
        if (!cksum) {
                ipseclog((LOG_DEBUG, "IPv4 AH input: "
                    "couldn't alloc temporary region for cksum\n"));
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
        
@@ -282,10 +281,10 @@ ah4_input(struct mbuf *m, int off)
        ip->ip_off = htons(ip->ip_off);
        if (ah4_calccksum(m, (caddr_t)cksum, siz1, algo, sav)) {
                FREE(cksum, M_TEMP);
-               ipsecstat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                goto fail;
        }
-       ipsecstat.in_ahhist[sav->alg_auth]++;
+       IPSEC_STAT_INCREMENT(ipsecstat.in_ahhist[sav->alg_auth]);
        /*
         * flip them back.
         */
@@ -308,7 +307,7 @@ ah4_input(struct mbuf *m, int off)
                    "checksum mismatch in IPv4 AH input: %s %s\n",
                    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
                FREE(cksum, M_TEMP);
-               ipsecstat.in_ahauthfail++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_ahauthfail);
                goto fail;
        }
     }
@@ -335,7 +334,7 @@ ah4_input(struct mbuf *m, int off)
                        if (!m) {
                                ipseclog((LOG_DEBUG,
                                    "IPv4 AH input: can't pullup\n"));
-                               ipsecstat.in_inval++;
+                               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                                goto fail;
                        }
                }
@@ -361,12 +360,12 @@ ah4_input(struct mbuf *m, int off)
                ipseclog((LOG_DEBUG,
                    "IPv4 AH input: authentication succeess\n"));
 #endif
-               ipsecstat.in_ahauthsucc++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_ahauthsucc);
        } else {
                ipseclog((LOG_WARNING,
                    "authentication failed in IPv4 AH input: %s %s\n",
                    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
-               ipsecstat.in_ahauthfail++;
+               IPSEC_STAT_INCREMENT(ipsecstat.in_ahauthfail);
                goto fail;
        }
 
@@ -375,7 +374,7 @@ ah4_input(struct mbuf *m, int off)
         */
        if ((sav->flags & SADB_X_EXT_OLD) == 0 && sav->replay) {
                if (ipsec_updatereplay(ntohl(((struct newah *)ah)->ah_seq), sav)) {
-                       ipsecstat.in_ahreplay++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_ahreplay);
                        goto fail;
                }
        }
@@ -388,7 +387,7 @@ ah4_input(struct mbuf *m, int off)
                /* RFC 2402 */
                stripsiz = sizeof(struct newah) + siz1;
        }
-       if (ipsec4_tunnel_validate(m, off + stripsiz, nxt, sav)) {
+       if (ipsec4_tunnel_validate(m, off + stripsiz, nxt, sav, &ifamily)) {
                /*
                 * strip off all the headers that precedes AH.
                 *      IP xx AH IP' payload -> IP' payload
@@ -397,13 +396,18 @@ ah4_input(struct mbuf *m, int off)
                 * XXX relationship with gif?
                 */
                u_int8_t tos;
-
+               
+               if (ifamily == AF_INET6) {
+                       ipseclog((LOG_NOTICE, "ipsec tunnel protocol mismatch "
+                           "in IPv4 AH input: %s\n", ipsec_logsastr(sav)));
+                       goto fail;
+               }
                tos = ip->ip_tos;
                m_adj(m, off + stripsiz);
                if (m->m_len < sizeof(*ip)) {
                        m = m_pullup(m, sizeof(*ip));
                        if (!m) {
-                               ipsecstat.in_inval++;
+                               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                                goto fail;
                        }
                }
@@ -415,7 +419,7 @@ ah4_input(struct mbuf *m, int off)
                        ipseclog((LOG_NOTICE, "ipsec tunnel address mismatch "
                            "in IPv4 AH input: %s %s\n",
                            ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
-                       ipsecstat.in_inval++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                        goto fail;
                }
 
@@ -446,12 +450,10 @@ ah4_input(struct mbuf *m, int off)
                key_sa_recordxfer(sav, m);
                if (ipsec_addhist(m, IPPROTO_AH, spi) != 0 ||
                    ipsec_addhist(m, IPPROTO_IPV4, 0) != 0) {
-                       ipsecstat.in_nomem++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_nomem);
                        goto fail;
                }
-               lck_mtx_unlock(sadb_mutex);
                proto_input(PF_INET, m);
-               lck_mtx_lock(sadb_mutex);
                nxt = IPPROTO_DONE;
        } else {
                /*
@@ -500,7 +502,7 @@ ah4_input(struct mbuf *m, int off)
                if (m->m_len < sizeof(*ip)) {
                        m = m_pullup(m, sizeof(*ip));
                        if (m == NULL) {
-                               ipsecstat.in_inval++;
+                               IPSEC_STAT_INCREMENT(ipsecstat.in_inval);
                                goto fail;
                        }
                }
@@ -515,19 +517,17 @@ ah4_input(struct mbuf *m, int off)
 
                key_sa_recordxfer(sav, m);
                if (ipsec_addhist(m, IPPROTO_AH, spi) != 0) {
-                       ipsecstat.in_nomem++;
+                       IPSEC_STAT_INCREMENT(ipsecstat.in_nomem);
                        goto fail;
                }
 
                if (nxt != IPPROTO_DONE) {
                        if ((ip_protox[nxt]->pr_flags & PR_LASTHDR) != 0 &&
                            ipsec4_in_reject(m, NULL)) {
-                               ipsecstat.in_polvio++;
+                               IPSEC_STAT_INCREMENT(ipsecstat.in_polvio);
                                goto fail;
                        }
-                       lck_mtx_unlock(sadb_mutex);
                        ip_proto_dispatch_in(m, off, nxt, 0);
-                       lck_mtx_lock(sadb_mutex);
                } else
                        m_freem(m);
                m = NULL;
@@ -536,19 +536,17 @@ ah4_input(struct mbuf *m, int off)
        if (sav) {
                KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
                        printf("DP ah4_input call free SA:%p\n", sav));
-               key_freesav(sav);
+               key_freesav(sav, KEY_SADB_UNLOCKED);
        }
-       ipsecstat.in_success++;
-       lck_mtx_unlock(sadb_mutex);
+       IPSEC_STAT_INCREMENT(ipsecstat.in_success);
        return;
 
 fail:
        if (sav) {
                KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
                        printf("DP ah4_input call free SA:%p\n", sav));
-               key_freesav(sav);
+               key_freesav(sav, KEY_SADB_UNLOCKED);
        }
-       lck_mtx_unlock(sadb_mutex);
        if (m)
                m_freem(m);
        return;
@@ -572,20 +570,17 @@ ah6_input(mp, offp)
        u_char *cksum;
        struct secasvar *sav = NULL;
        u_int16_t nxt;
-       int s;
        size_t stripsiz = 0;
 
-       lck_mtx_lock(sadb_mutex);
 
 #ifndef PULLDOWN_TEST
-       IP6_EXTHDR_CHECK(m, off, sizeof(struct ah), {lck_mtx_unlock(sadb_mutex);return IPPROTO_DONE;});
+       IP6_EXTHDR_CHECK(m, off, sizeof(struct ah), {return IPPROTO_DONE;});
        ah = (struct ah *)(mtod(m, caddr_t) + off);
 #else
        IP6_EXTHDR_GET(ah, struct ah *, m, off, sizeof(struct newah));
        if (ah == NULL) {
                ipseclog((LOG_DEBUG, "IPv6 AH input: can't pullup\n"));
                ipsec6stat.in_inval++;
-               lck_mtx_unlock(sadb_mutex);
                return IPPROTO_DONE;
        }
 #endif
@@ -598,7 +593,7 @@ ah6_input(mp, offp)
        if (ntohs(ip6->ip6_plen) == 0) {
                ipseclog((LOG_ERR, "IPv6 AH input: "
                    "AH with IPv6 jumbogram is not supported.\n"));
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                goto fail;
        }
 
@@ -608,7 +603,7 @@ ah6_input(mp, offp)
                ipseclog((LOG_WARNING,
                    "IPv6 AH input: no key association found for spi %u\n",
                    (u_int32_t)ntohl(spi)));
-               ipsec6stat.in_nosa++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_nosa);
                goto fail;
        }
        KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
@@ -618,7 +613,7 @@ ah6_input(mp, offp)
                ipseclog((LOG_DEBUG,
                    "IPv6 AH input: non-mature/dying SA found for spi %u; ",
                    (u_int32_t)ntohl(spi)));
-               ipsec6stat.in_badspi++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_badspi);
                goto fail;
        }
 
@@ -627,7 +622,7 @@ ah6_input(mp, offp)
                ipseclog((LOG_DEBUG, "IPv6 AH input: "
                    "unsupported authentication algorithm for spi %u\n",
                    (u_int32_t)ntohl(spi)));
-               ipsec6stat.in_badspi++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_badspi);
                goto fail;
        }
 
@@ -651,7 +646,7 @@ ah6_input(mp, offp)
                    "(%lu, should be at least %lu): %s\n",
                    (u_long)siz1, (u_long)siz,
                    ipsec6_logpacketstr(ip6, spi)));
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                goto fail;
        }
        if ((ah->ah_len << 2) - sizoff != siz1) {
@@ -659,18 +654,18 @@ ah6_input(mp, offp)
                    "(%d should be %lu): %s\n",
                    (ah->ah_len << 2) - sizoff, (u_long)siz1,
                    ipsec6_logpacketstr(ip6, spi)));
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                goto fail;
        }
 #ifndef PULLDOWN_TEST
        IP6_EXTHDR_CHECK(m, off, sizeof(struct ah) + sizoff + siz1, 
-               {lck_mtx_unlock(sadb_mutex);return IPPROTO_DONE;});
+               {return IPPROTO_DONE;});
 #else
        IP6_EXTHDR_GET(ah, struct ah *, m, off,
                sizeof(struct ah) + sizoff + siz1);
        if (ah == NULL) {
                ipseclog((LOG_NOTICE, "couldn't pullup gather IPv6 AH checksum part"));
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                m = NULL;
                goto fail;
        }
@@ -684,7 +679,7 @@ ah6_input(mp, offp)
                if (ipsec_chkreplay(ntohl(((struct newah *)ah)->ah_seq), sav))
                        ; /*okey*/
                else {
-                       ipsec6stat.in_ahreplay++;
+                       IPSEC_STAT_INCREMENT(ipsec6stat.in_ahreplay);
                        ipseclog((LOG_WARNING,
                            "replay packet in IPv6 AH input: %s %s\n",
                            ipsec6_logpacketstr(ip6, spi),
@@ -701,16 +696,16 @@ ah6_input(mp, offp)
        if (!cksum) {
                ipseclog((LOG_DEBUG, "IPv6 AH input: "
                    "couldn't alloc temporary region for cksum\n"));
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                goto fail;
        }
        
        if (ah6_calccksum(m, (caddr_t)cksum, siz1, algo, sav)) {
                FREE(cksum, M_TEMP);
-               ipsec6stat.in_inval++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                goto fail;
        }
-       ipsec6stat.in_ahhist[sav->alg_auth]++;
+       IPSEC_STAT_INCREMENT(ipsec6stat.in_ahhist[sav->alg_auth]);
 
     {
        caddr_t sumpos = NULL;
@@ -728,7 +723,7 @@ ah6_input(mp, offp)
                    "checksum mismatch in IPv6 AH input: %s %s\n",
                    ipsec6_logpacketstr(ip6, spi), ipsec_logsastr(sav)));
                FREE(cksum, M_TEMP);
-               ipsec6stat.in_ahauthfail++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_ahauthfail);
                goto fail;
        }
     }
@@ -751,7 +746,7 @@ ah6_input(mp, offp)
 
                IP6_EXTHDR_CHECK(m, off, sizeof(struct ah) + sizoff + siz1
                                + sizeof(struct ip6_hdr), 
-                               {lck_mtx_unlock(sadb_mutex);return IPPROTO_DONE;});
+                               {return IPPROTO_DONE;});
 
                nip6 = (struct ip6_hdr *)((u_char *)(ah + 1) + sizoff + siz1);
                if (!IN6_ARE_ADDR_EQUAL(&nip6->ip6_src, &ip6->ip6_src)
@@ -774,12 +769,12 @@ ah6_input(mp, offp)
                ipseclog((LOG_DEBUG,
                    "IPv6 AH input: authentication succeess\n"));
 #endif
-               ipsec6stat.in_ahauthsucc++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_ahauthsucc);
        } else {
                ipseclog((LOG_WARNING,
                    "authentication failed in IPv6 AH input: %s %s\n",
                    ipsec6_logpacketstr(ip6, spi), ipsec_logsastr(sav)));
-               ipsec6stat.in_ahauthfail++;
+               IPSEC_STAT_INCREMENT(ipsec6stat.in_ahauthfail);
                goto fail;
        }
 
@@ -788,7 +783,7 @@ ah6_input(mp, offp)
         */
        if ((sav->flags & SADB_X_EXT_OLD) == 0 && sav->replay) {
                if (ipsec_updatereplay(ntohl(((struct newah *)ah)->ah_seq), sav)) {
-                       ipsec6stat.in_ahreplay++;
+                       IPSEC_STAT_INCREMENT(ipsec6stat.in_ahreplay);
                        goto fail;
                }
        }
@@ -820,7 +815,7 @@ ah6_input(mp, offp)
                         */
                        m = m_pullup(m, sizeof(*ip6));
                        if (!m) {
-                               ipsec6stat.in_inval++;
+                               IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                                goto fail;
                        }
                }
@@ -833,7 +828,7 @@ ah6_input(mp, offp)
                            "in IPv6 AH input: %s %s\n",
                            ipsec6_logpacketstr(ip6, spi),
                            ipsec_logsastr(sav)));
-                       ipsec6stat.in_inval++;
+                       IPSEC_STAT_INCREMENT(ipsec6stat.in_inval);
                        goto fail;
                }
 
@@ -849,12 +844,10 @@ ah6_input(mp, offp)
                key_sa_recordxfer(sav, m);
                if (ipsec_addhist(m, IPPROTO_AH, spi) != 0 ||
                    ipsec_addhist(m, IPPROTO_IPV6, 0) != 0) {
-                       ipsec6stat.in_nomem++;
+                       IPSEC_STAT_INCREMENT(ipsec6stat.in_nomem);
                        goto fail;
                }
-               lck_mtx_unlock(sadb_mutex);
                proto_input(PF_INET6, m);
-               lck_mtx_lock(sadb_mutex);
                nxt = IPPROTO_DONE;
        } else {
                /*
@@ -914,7 +907,7 @@ ah6_input(mp, offp)
 
                key_sa_recordxfer(sav, m);
                if (ipsec_addhist(m, IPPROTO_AH, spi) != 0) {
-                       ipsec6stat.in_nomem++;
+                       IPSEC_STAT_INCREMENT(ipsec6stat.in_nomem);
                        goto fail;
                }
        }
@@ -925,19 +918,17 @@ ah6_input(mp, offp)
        if (sav) {
                KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
                        printf("DP ah6_input call free SA:%p\n", sav));
-               key_freesav(sav);
+               key_freesav(sav, KEY_SADB_UNLOCKED);
        }
-       ipsec6stat.in_success++;
-       lck_mtx_unlock(sadb_mutex);
+       IPSEC_STAT_INCREMENT(ipsec6stat.in_success);
        return nxt;
 
 fail:
        if (sav) {
                KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
                        printf("DP ah6_input call free SA:%p\n", sav));
-               key_freesav(sav);
+               key_freesav(sav, KEY_SADB_UNLOCKED);
        }
-       lck_mtx_unlock(sadb_mutex);
        if (m)
                m_freem(m);
        return IPPROTO_DONE;
@@ -1004,7 +995,6 @@ ah6_ctlinput(cmd, sa, d)
                         */
                        sa6_src = ip6cp->ip6c_src;
                        sa6_dst = (struct sockaddr_in6 *)sa;
-                       lck_mtx_lock(sadb_mutex);
                        sav = key_allocsa(AF_INET6,
                                          (caddr_t)&sa6_src->sin6_addr,
                                          (caddr_t)&sa6_dst->sin6_addr,
@@ -1013,9 +1003,8 @@ ah6_ctlinput(cmd, sa, d)
                                if (sav->state == SADB_SASTATE_MATURE ||
                                    sav->state == SADB_SASTATE_DYING)
                                        valid++;
-                               key_freesav(sav);
+                               key_freesav(sav, KEY_SADB_UNLOCKED);
                        }
-                       lck_mtx_unlock(sadb_mutex);
 
                        /* XXX Further validation? */