usr.bin/netstat/ipsec.c

   1 /*      $NetBSD: ipsec.c,v 1.14 2008/04/24 04:09:27 thorpej Exp $       */
   2 /*      $KAME: ipsec.c,v 1.33 2003/07/25 09:54:32 itojun Exp $  */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1983, 1988, 1993
  35  *      The Regents of the University of California.  All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  */
  61
  62 #include <sys/cdefs.h>
  63 #ifndef lint
  64 #if 0
  65 static char sccsid[] = "from: @(#)inet.c        8.4 (Berkeley) 4/20/94";
  66 #else
  67 #ifdef __NetBSD__
  68 __RCSID("$NetBSD: ipsec.c,v 1.14 2008/04/24 04:09:27 thorpej Exp $");
  69 #endif
  70 #endif
  71 #endif /* not lint */
  72
  73 #include <sys/param.h>
  74 #include <sys/queue.h>
  75 #include <sys/socket.h>
  76 #include <sys/sysctl.h>
  77
  78 #include <netinet/in.h>
  79
  80 #ifdef IPSEC
  81 #include <netinet6/ipsec.h>
  82 #include <netkey/keysock.h>
  83 #endif
  84
  85 #include <err.h>
  86 #include <kvm.h>
  87 #include <stdio.h>
  88 #include <string.h>
  89 #include <unistd.h>
  90 #include "netstat.h"
  91
  92 #ifdef IPSEC
  93 struct val2str {
  94         int val;
  95         const char *str;
  96 };
  97
  98 static struct val2str ipsec_ahnames[] = {
  99         { SADB_AALG_NONE, "none", },
 100         { SADB_AALG_MD5HMAC, "hmac-md5", },
 101         { SADB_AALG_SHA1HMAC, "hmac-sha1", },
 102         { SADB_X_AALG_MD5, "md5", },
 103         { SADB_X_AALG_SHA, "sha", },
 104         { SADB_X_AALG_NULL, "null", },
 105         { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
 106         { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
 107         { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
 108         { SADB_X_AALG_RIPEMD160HMAC, "hmac-ripemd160", },
 109         { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
 110         { -1, NULL },
 111 };
 112
 113 static struct val2str ipsec_espnames[] = {
 114         { SADB_EALG_NONE, "none", },
 115         { SADB_EALG_DESCBC, "des-cbc", },
 116         { SADB_EALG_3DESCBC, "3des-cbc", },
 117         { SADB_EALG_NULL, "null", },
 118         { SADB_X_EALG_CAST128CBC, "cast128-cbc", },
 119         { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
 120         { SADB_X_EALG_RIJNDAELCBC, "rijndael-cbc", },
 121         { SADB_X_EALG_AESCTR, "aes-ctr", },
 122         { -1, NULL },
 123 };
 124
 125 static struct val2str ipsec_compnames[] = {
 126         { SADB_X_CALG_NONE, "none", },
 127         { SADB_X_CALG_OUI, "oui", },
 128         { SADB_X_CALG_DEFLATE, "deflate", },
 129         { SADB_X_CALG_LZS, "lzs", },
 130         { -1, NULL },
 131 };
 132
 133 static const char *pfkey_msgtypenames[] = {
 134         "reserved", "getspi", "update", "add", "delete",
 135         "get", "acquire", "register", "expire", "flush",
 136         "dump", "x_promisc", "x_pchange", "x_spdupdate", "x_spdadd",
 137         "x_spddelete", "x_spdget", "x_spdacquire", "x_spddump", "x_spdflush",
 138         "x_spdsetidx", "x_spdexpire", "x_spddelete2"
 139 };
 140
 141 static uint64_t ipsecstat[IPSEC_NSTATS];
 142
 143 static void print_ipsecstats(void);
 144 static const char *pfkey_msgtype_names(int);
 145 static void ipsec_hist(const u_quad_t *, int, const struct val2str *,
 146         size_t, const char *);
 147
 148 /*
 149  * Dump IPSEC statistics structure.
 150  */
 151 static void
 152 ipsec_hist(const uint64_t *hist, int histmax, const struct val2str *name,
 153            size_t namemax, const char *title)
 154 {
 155         int first;
 156         int proto;
 157         const struct val2str *p;
 158
 159         first = 1;
 160         for (proto = 0; proto < histmax; proto++) {
 161                 if (hist[proto] <= 0)
 162                         continue;
 163                 if (first) {
 164                         printf("\t%s histogram:\n", title);
 165                         first = 0;
 166                 }
 167                 for (p = name; p && p->str; p++) {
 168                         if (p->val == proto)
 169                                 break;
 170                 }
 171                 if (p && p->str) {
 172                         printf("\t\t%s: %llu\n", p->str, (unsigned long long)hist[proto]);
 173                 } else {
 174                         printf("\t\t#%ld: %llu\n", (long)proto,
 175                             (unsigned long long)hist[proto]);
 176                 }
 177         }
 178 }
 179
 180 static void
 181 print_ipsecstats(void)
 182 {
 183 #define p(f, m) if (ipsecstat[f] || sflag <= 1) \
 184     printf(m, (unsigned long long)ipsecstat[f], plural(ipsecstat[f]))
 185 #define pes(f, m) if (ipsecstat[f] || sflag <= 1) \
 186     printf(m, (unsigned long long)ipsecstat[f], plurales(ipsecstat[f]))
 187 #define hist(f, c, n, t) \
 188     ipsec_hist(&(f), (c), (n), sizeof(n)/sizeof(n[0]), (t));
 189
 190         p(IPSEC_STAT_IN_SUCCESS, "\t%llu inbound packet%s processed successfully\n");
 191         p(IPSEC_STAT_IN_POLVIO, "\t%llu inbound packet%s violated process security "
 192             "policy\n");
 193         p(IPSEC_STAT_IN_NOSA, "\t%llu inbound packet%s with no SA available\n");
 194         p(IPSEC_STAT_IN_INVAL, "\t%llu invalid inbound packet%s\n");
 195         p(IPSEC_STAT_IN_NOMEM, "\t%llu inbound packet%s failed due to insufficient memory\n");
 196         p(IPSEC_STAT_IN_BADSPI, "\t%llu inbound packet%s failed getting SPI\n");
 197         p(IPSEC_STAT_IN_AHREPLAY, "\t%llu inbound packet%s failed on AH replay check\n");
 198         p(IPSEC_STAT_IN_ESPREPLAY, "\t%llu inbound packet%s failed on ESP replay check\n");
 199         p(IPSEC_STAT_IN_AHAUTHSUCC, "\t%llu inbound packet%s considered authentic\n");
 200         p(IPSEC_STAT_IN_AHAUTHFAIL, "\t%llu inbound packet%s failed on authentication\n");
 201         hist(ipsecstat[IPSEC_STAT_IN_AHHIST], 256, ipsec_ahnames, "AH input");
 202         hist(ipsecstat[IPSEC_STAT_IN_ESPHIST], 256, ipsec_espnames, "ESP input");
 203         hist(ipsecstat[IPSEC_STAT_IN_COMPHIST], 256, ipsec_compnames, "IPComp input");
 204
 205         p(IPSEC_STAT_OUT_SUCCESS, "\t%llu outbound packet%s processed successfully\n");
 206         p(IPSEC_STAT_OUT_POLVIO, "\t%llu outbound packet%s violated process security "
 207             "policy\n");
 208         p(IPSEC_STAT_OUT_NOSA, "\t%llu outbound packet%s with no SA available\n");
 209         p(IPSEC_STAT_OUT_INVAL, "\t%llu invalid outbound packet%s\n");
 210         p(IPSEC_STAT_OUT_NOMEM, "\t%llu outbound packet%s failed due to insufficient memory\n");
 211         p(IPSEC_STAT_OUT_NOROUTE, "\t%llu outbound packet%s with no route\n");
 212         hist(ipsecstat[IPSEC_STAT_OUT_AHHIST], 256, ipsec_ahnames, "AH output");
 213         hist(ipsecstat[IPSEC_STAT_OUT_ESPHIST], 256, ipsec_espnames, "ESP output");
 214         hist(ipsecstat[IPSEC_STAT_OUT_COMPHIST], 256, ipsec_compnames, "IPComp output");
 215
 216         p(IPSEC_STAT_SPDCACHELOOKUP, "\t%llu SPD cache lookup%s\n");
 217         pes(IPSEC_STAT_SPDCACHEMISS, "\t%llu SPD cache miss%s\n");
 218 #undef p
 219 #undef pes
 220 #undef hist
 221 }
 222
 223 void
 224 ipsec_stats(u_long off, const char *name)
 225 {
 226
 227         if (use_sysctl) {
 228                 size_t size = sizeof(ipsecstat);
 229
 230                 if (sysctlbyname("net.inet.ipsec.stats", ipsecstat, &size,
 231                                  NULL, 0) == -1)
 232                         return;
 233         } else {
 234                 warnx("%s stats not available via KVM.", name);
 235                 return;
 236         }
 237
 238         printf ("%s:\n", name);
 239
 240         print_ipsecstats();
 241 }
 242
 243 static const char *
 244 pfkey_msgtype_names(int x)
 245 {
 246         const int max =
 247             sizeof(pfkey_msgtypenames)/sizeof(pfkey_msgtypenames[0]);
 248         static char buf[20];
 249
 250         if (x < max && pfkey_msgtypenames[x])
 251                 return pfkey_msgtypenames[x];
 252         snprintf(buf, sizeof(buf), "#%d", x);
 253         return buf;
 254 }
 255
 256 void
 257 pfkey_stats(u_long off, const char *name)
 258 {
 259         uint64_t pfkeystat[PFKEY_NSTATS];
 260         int first, type;
 261
 262         if (use_sysctl) {
 263                 size_t size = sizeof(pfkeystat);
 264
 265                 if (sysctlbyname("net.key.stats", pfkeystat, &size,
 266                                  NULL, 0) == -1)
 267                         return;
 268         } else {
 269                 warnx("%s stats not available via KVM.", name);
 270                 return;
 271         }
 272
 273         printf ("%s:\n", name);
 274
 275 #define p(f, m) if (pfkeystat[f] || sflag <= 1) \
 276     printf(m, (unsigned long long)pfkeystat[f], plural(pfkeystat[f]))
 277
 278         /* userland -> kernel */
 279         p(PFKEY_STAT_OUT_TOTAL, "\t%llu request%s sent from userland\n");
 280         p(PFKEY_STAT_OUT_BYTES, "\t%llu byte%s sent from userland\n");
 281         for (first = 1, type = 0; type < 256; type++) {
 282                 if (pfkeystat[PFKEY_STAT_OUT_MSGTYPE + type] == 0)
 283                         continue;
 284                 if (first) {
 285                         printf("\thistogram by message type:\n");
 286                         first = 0;
 287                 }
 288                 printf("\t\t%s: %llu\n", pfkey_msgtype_names(type),
 289                     (unsigned long long)pfkeystat[PFKEY_STAT_OUT_MSGTYPE + type]);
 290         }
 291         p(PFKEY_STAT_OUT_INVLEN, "\t%llu message%s with invalid length field\n");
 292         p(PFKEY_STAT_OUT_INVVER, "\t%llu message%s with invalid version field\n");
 293         p(PFKEY_STAT_OUT_INVMSGTYPE, "\t%llu message%s with invalid message type field\n");
 294         p(PFKEY_STAT_OUT_TOOSHORT, "\t%llu message%s too short\n");
 295         p(PFKEY_STAT_OUT_NOMEM, "\t%llu message%s with memory allocation failure\n");
 296         p(PFKEY_STAT_OUT_DUPEXT, "\t%llu message%s with duplicate extension\n");
 297         p(PFKEY_STAT_OUT_INVEXTTYPE, "\t%llu message%s with invalid extension type\n");
 298         p(PFKEY_STAT_OUT_INVSATYPE, "\t%llu message%s with invalid sa type\n");
 299         p(PFKEY_STAT_OUT_INVADDR, "\t%llu message%s with invalid address extension\n");
 300
 301         /* kernel -> userland */
 302         p(PFKEY_STAT_IN_TOTAL, "\t%llu request%s sent to userland\n");
 303         p(PFKEY_STAT_IN_BYTES, "\t%llu byte%s sent to userland\n");
 304         for (first = 1, type = 0; type < 256; type++) {
 305                 if (pfkeystat[PFKEY_STAT_IN_MSGTYPE + type] == 0)
 306                         continue;
 307                 if (first) {
 308                         printf("\thistogram by message type:\n");
 309                         first = 0;
 310                 }
 311                 printf("\t\t%s: %llu\n", pfkey_msgtype_names(type),
 312                     (unsigned long long)pfkeystat[PFKEY_STAT_IN_MSGTYPE + type]);
 313         }
 314         p(PFKEY_STAT_IN_MSGTARGET + KEY_SENDUP_ONE,
 315             "\t%llu message%s toward single socket\n");
 316         p(PFKEY_STAT_IN_MSGTARGET + KEY_SENDUP_ALL,
 317             "\t%llu message%s toward all sockets\n");
 318         p(PFKEY_STAT_IN_MSGTARGET + KEY_SENDUP_REGISTERED,
 319             "\t%llu message%s toward registered sockets\n");
 320         p(PFKEY_STAT_IN_NOMEM, "\t%llu message%s with memory allocation failure\n");
 321 #undef p
 322 }
 323 #endif /*IPSEC*/