usr.bin/netstat/ipsec.c

   1 /*      $KAME: ipsec.c,v 1.33 2003/07/25 09:54:32 itojun Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2005 NTT Multimedia Communications Laboratories, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28 /*-
  29  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
  30  * All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. Neither the name of the project nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56 /*-
  57  * Copyright (c) 1983, 1988, 1993
  58  *      The Regents of the University of California.  All rights reserved.
  59  *
  60  * Redistribution and use in source and binary forms, with or without
  61  * modification, are permitted provided that the following conditions
  62  * are met:
  63  * 1. Redistributions of source code must retain the above copyright
  64  *    notice, this list of conditions and the following disclaimer.
  65  * 2. Redistributions in binary form must reproduce the above copyright
  66  *    notice, this list of conditions and the following disclaimer in the
  67  *    documentation and/or other materials provided with the distribution.
  68  * 4. Neither the name of the University nor the names of its contributors
  69  *    may be used to endorse or promote products derived from this software
  70  *    without specific prior written permission.
  71  *
  72  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  73  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  74  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  75  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  76  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  77  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  78  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  79  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  80  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  81  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  82  * SUCH DAMAGE.
  83  */
  84
  85 #if 0
  86 #ifndef lint
  87 static char sccsid[] = "@(#)inet.c      8.5 (Berkeley) 5/24/95";
  88 #endif /* not lint */
  89 #endif
  90
  91 #include <sys/cdefs.h>
  92 __FBSDID("$FreeBSD$");
  93
  94 #include <sys/param.h>
  95 #include <sys/queue.h>
  96 #include <sys/socket.h>
  97 #include <sys/socketvar.h>
  98
  99 #include <netinet/in.h>
 100
 101 #ifdef IPSEC
 102 #include <netipsec/ipsec.h>
 103 #include <netipsec/ah_var.h>
 104 #include <netipsec/esp_var.h>
 105 #include <netipsec/ipcomp_var.h>
 106 #endif
 107
 108 #include <stdint.h>
 109 #include <stdio.h>
 110 #include <stdbool.h>
 111 #include <string.h>
 112 #include <unistd.h>
 113 #include <libxo/xo.h>
 114 #include "netstat.h"
 115
 116 #ifdef IPSEC
 117 struct val2str {
 118         int val;
 119         const char *str;
 120 };
 121
 122 static struct val2str ipsec_ahnames[] = {
 123         { SADB_AALG_NONE, "none", },
 124         { SADB_AALG_MD5HMAC, "hmac-md5", },
 125         { SADB_AALG_SHA1HMAC, "hmac-sha1", },
 126         { SADB_X_AALG_MD5, "md5", },
 127         { SADB_X_AALG_SHA, "sha", },
 128         { SADB_X_AALG_NULL, "null", },
 129 #ifdef SADB_X_AALG_SHA2_256
 130         { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
 131 #endif
 132 #ifdef SADB_X_AALG_SHA2_384
 133         { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
 134 #endif
 135 #ifdef SADB_X_AALG_SHA2_512
 136         { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
 137 #endif
 138 #ifdef SADB_X_AALG_RIPEMD160HMAC
 139         { SADB_X_AALG_RIPEMD160HMAC, "hmac-ripemd160", },
 140 #endif
 141 #ifdef SADB_X_AALG_AES_XCBC_MAC
 142         { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
 143 #endif
 144 #ifdef SADB_X_AALG_AES128GMAC
 145         { SADB_X_AALG_AES128GMAC, "aes-gmac-128", },
 146 #endif
 147 #ifdef SADB_X_AALG_AES192GMAC
 148         { SADB_X_AALG_AES192GMAC, "aes-gmac-192", },
 149 #endif
 150 #ifdef SADB_X_AALG_AES256GMAC
 151         { SADB_X_AALG_AES256GMAC, "aes-gmac-256", },
 152 #endif
 153         { -1, NULL },
 154 };
 155
 156 static struct val2str ipsec_espnames[] = {
 157         { SADB_EALG_NONE, "none", },
 158         { SADB_EALG_DESCBC, "des-cbc", },
 159         { SADB_EALG_3DESCBC, "3des-cbc", },
 160         { SADB_EALG_NULL, "null", },
 161         { SADB_X_EALG_CAST128CBC, "cast128-cbc", },
 162         { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
 163 #ifdef SADB_X_EALG_RIJNDAELCBC
 164         { SADB_X_EALG_RIJNDAELCBC, "rijndael-cbc", },
 165 #endif
 166 #ifdef SADB_X_EALG_AESCTR
 167         { SADB_X_EALG_AESCTR, "aes-ctr", },
 168 #endif
 169 #ifdef SADB_X_EALG_AESGCM16
 170         { SADB_X_EALG_AESGCM16, "aes-gcm-16", },
 171 #endif
 172         { -1, NULL },
 173 };
 174
 175 static struct val2str ipsec_compnames[] = {
 176         { SADB_X_CALG_NONE, "none", },
 177         { SADB_X_CALG_OUI, "oui", },
 178         { SADB_X_CALG_DEFLATE, "deflate", },
 179         { SADB_X_CALG_LZS, "lzs", },
 180         { -1, NULL },
 181 };
 182
 183 static void print_ipsecstats(const struct ipsecstat *ipsecstat);
 184
 185 static void
 186 print_ipsecstats(const struct ipsecstat *ipsecstat)
 187 {
 188         xo_open_container("ipsec-statistics");
 189
 190 #define p(f, m) if (ipsecstat->f || sflag <= 1) \
 191         xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f))
 192
 193         p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} "
 194             "{N:/inbound packet%s violated process security policy}\n");
 195         p(ips_in_nomem, "\t{:dropped-no-memory/%ju} "
 196             "{N:/inbound packet%s failed due to insufficient memory}\n");
 197         p(ips_in_inval, "\t{:dropped-invalid/%ju} "
 198             "{N:/invalid inbound packet%s}\n");
 199         p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} "
 200             "{N:/outbound packet%s violated process security policy}\n");
 201         p(ips_out_nosa, "\t{:discarded-no-sa/%ju} "
 202             "{N:/outbound packet%s with no SA available}\n");
 203         p(ips_out_nomem, "\t{:discarded-no-memory/%ju} "
 204             "{N:/outbound packet%s failed due to insufficient memory}\n");
 205         p(ips_out_noroute, "\t{:discarded-no-route/%ju} "
 206             "{N:/outbound packet%s with no route available}\n");
 207         p(ips_out_inval, "\t{:discarded-invalid/%ju} "
 208             "{N:/invalid outbound packet%s}\n");
 209         p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} "
 210             "{N:/outbound packet%s with bundled SAs}\n");
 211         p(ips_mbcoalesced, "\t{:mbufs-coalesced-during-clone/%ju} "
 212             "{N:/mbuf%s coalesced during clone}\n");
 213         p(ips_clcoalesced, "\t{:clusters-coalesced-during-clone/%ju} "
 214             "{N:/cluster%s coalesced during clone}\n");
 215         p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} "
 216             "{N:/cluster%s copied during clone}\n");
 217         p(ips_mbinserted, "\t{:mbufs-inserted/%ju} "
 218             "{N:/mbuf%s inserted during makespace}\n");
 219 #undef p
 220         xo_close_container("ipsec-statistics");
 221 }
 222
 223 void
 224 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 225 {
 226         struct ipsecstat ipsecstat;
 227
 228         if (strcmp(name, "ipsec6") == 0) {
 229                 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat,
 230                                 sizeof(ipsecstat), kread_counters) != 0)
 231                         return;
 232         } else {
 233                 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat,
 234                                 sizeof(ipsecstat), kread_counters) != 0)
 235                         return;
 236         }
 237
 238         xo_emit("{T:/%s}:\n", name);
 239
 240         print_ipsecstats(&ipsecstat);
 241 }
 242
 243
 244 static void print_ahstats(const struct ahstat *ahstat);
 245 static void print_espstats(const struct espstat *espstat);
 246 static void print_ipcompstats(const struct ipcompstat *ipcompstat);
 247
 248 /*
 249  * Dump IPSEC statistics structure.
 250  */
 251 static void
 252 ipsec_hist_new(const uint64_t *hist, size_t histmax,
 253     const struct val2str *name, const char *title, const char *cname)
 254 {
 255         int first;
 256         size_t proto;
 257         const struct val2str *p;
 258
 259         first = 1;
 260         for (proto = 0; proto < histmax; proto++) {
 261                 if (hist[proto] <= 0)
 262                         continue;
 263                 if (first) {
 264                         xo_open_list(cname);
 265                         xo_emit("\t{T:/%s histogram}:\n", title);
 266                         first = 0;
 267                 }
 268                 xo_open_instance(cname);
 269                 for (p = name; p && p->str; p++) {
 270                         if (p->val == (int)proto)
 271                                 break;
 272                 }
 273                 if (p && p->str) {
 274                         xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str,
 275                             (uintmax_t)hist[proto]);
 276                 } else {
 277                         xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n",
 278                             (unsigned long)proto, (uintmax_t)hist[proto]);
 279                 }
 280                 xo_close_instance(cname);
 281         }
 282         if (!first)
 283                 xo_close_list(cname);
 284 }
 285
 286 static void
 287 print_ahstats(const struct ahstat *ahstat)
 288 {
 289         xo_open_container("ah-statictics");
 290
 291 #define p(f, n, m) if (ahstat->f || sflag <= 1) \
 292         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",  \
 293             (uintmax_t)ahstat->f, plural(ahstat->f))
 294 #define hist(f, n, t, c) \
 295         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c))
 296
 297         p(ahs_hdrops, "dropped-short-header",
 298             "packet%s shorter than header shows");
 299         p(ahs_nopf, "dropped-bad-protocol",
 300             "packet%s dropped; protocol family not supported");
 301         p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 302         p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 303         p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 304         p(ahs_noxform, "dropped-no-transform",
 305             "packet%s dropped; no transform");
 306         p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s");
 307         p(ahs_badauth, "dropped-bad-auth",
 308             "packet%s dropped; bad authentication detected");
 309         p(ahs_badauthl, "dropped-bad-auth-level",
 310             "packet%s dropped; bad authentication length");
 311         p(ahs_replay, "possile-replay-detected",
 312             "possible replay packet%s detected");
 313         p(ahs_input, "received-packets", "packet%s in");
 314         p(ahs_output, "send-packets", "packet%s out");
 315         p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 316         p(ahs_ibytes, "received-bytes", "byte%s in");
 317         p(ahs_obytes, "send-bytes", "byte%s out");
 318         p(ahs_toobig, "dropped-too-large",
 319             "packet%s dropped; larger than IP_MAXPACKET");
 320         p(ahs_pdrops, "dropped-policy-violation",
 321             "packet%s blocked due to policy");
 322         p(ahs_crypto, "crypto-failures", "crypto processing failure%s");
 323         p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
 324         hist(ahstat->ahs_hist, ipsec_ahnames,
 325             "AH output", "ah-output-histogram");
 326
 327 #undef p
 328 #undef hist
 329         xo_close_container("ah-statictics");
 330 }
 331
 332 void
 333 ah_stats(u_long off, const char *name, int family __unused, int proto __unused)
 334 {
 335         struct ahstat ahstat;
 336
 337         if (fetch_stats("net.inet.ah.stats", off, &ahstat,
 338             sizeof(ahstat), kread_counters) != 0)
 339                 return;
 340
 341         xo_emit("{T:/%s}:\n", name);
 342
 343         print_ahstats(&ahstat);
 344 }
 345
 346 static void
 347 print_espstats(const struct espstat *espstat)
 348 {
 349         xo_open_container("esp-statictics");
 350 #define p(f, n, m) if (espstat->f || sflag <= 1)        \
 351         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",          \
 352             (uintmax_t)espstat->f, plural(espstat->f))
 353 #define hist(f, n, t, c) \
 354         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
 355
 356         p(esps_hdrops, "dropped-short-header",
 357             "packet%s shorter than header shows");
 358         p(esps_nopf, "dropped-bad-protocol",
 359             "packet%s dropped; protocol family not supported");
 360         p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 361         p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 362         p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 363         p(esps_noxform, "dropped-no-transform",
 364             "packet%s dropped; no transform");
 365         p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen");
 366         p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s");
 367         p(esps_badenc, "dropped-bad-crypto",
 368             "packet%s dropped; bad encryption detected");
 369         p(esps_badauth, "dropped-bad-auth",
 370             "packet%s dropped; bad authentication detected");
 371         p(esps_replay, "possible-replay-detected",
 372             "possible replay packet%s detected");
 373         p(esps_input, "received-packets", "packet%s in");
 374         p(esps_output, "sent-packets", "packet%s out");
 375         p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 376         p(esps_ibytes, "receieve-bytes", "byte%s in");
 377         p(esps_obytes, "sent-bytes", "byte%s out");
 378         p(esps_toobig, "dropped-too-large",
 379             "packet%s dropped; larger than IP_MAXPACKET");
 380         p(esps_pdrops, "dropped-policy-violation",
 381             "packet%s blocked due to policy");
 382         p(esps_crypto, "crypto-failures", "crypto processing failure%s");
 383         p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
 384         hist(espstat->esps_hist, ipsec_espnames,
 385             "ESP output", "esp-output-histogram");
 386
 387 #undef p
 388 #undef hist
 389         xo_close_container("esp-statictics");
 390 }
 391
 392 void
 393 esp_stats(u_long off, const char *name, int family __unused, int proto __unused)
 394 {
 395         struct espstat espstat;
 396
 397         if (fetch_stats("net.inet.esp.stats", off, &espstat,
 398             sizeof(espstat), kread_counters) != 0)
 399                 return;
 400
 401         xo_emit("{T:/%s}:\n", name);
 402
 403         print_espstats(&espstat);
 404 }
 405
 406 static void
 407 print_ipcompstats(const struct ipcompstat *ipcompstat)
 408 {
 409         xo_open_container("ipcomp-statictics");
 410
 411 #define p(f, n, m) if (ipcompstat->f || sflag <= 1)     \
 412         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",          \
 413             (uintmax_t)ipcompstat->f, plural(ipcompstat->f))
 414 #define hist(f, n, t, c) \
 415         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
 416
 417         p(ipcomps_hdrops, "dropped-short-header",
 418             "packet%s shorter than header shows");
 419         p(ipcomps_nopf, "dropped-bad-protocol",
 420             "packet%s dropped; protocol family not supported");
 421         p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 422         p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 423         p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 424         p(ipcomps_noxform, "dropped-no-transform",
 425             "packet%s dropped; no transform");
 426         p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s");
 427         p(ipcomps_input, "receieve-packets", "packet%s in");
 428         p(ipcomps_output, "sent-packets", "packet%s out");
 429         p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 430         p(ipcomps_ibytes, "receieved-bytes", "byte%s in");
 431         p(ipcomps_obytes, "sent-bytes", "byte%s out");
 432         p(ipcomps_toobig, "dropped-too-large",
 433             "packet%s dropped; larger than IP_MAXPACKET");
 434         p(ipcomps_pdrops, "dropped-policy-violation",
 435             "packet%s blocked due to policy");
 436         p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s");
 437         hist(ipcompstat->ipcomps_hist, ipsec_compnames,
 438             "COMP output", "comp-output-histogram");
 439         p(ipcomps_threshold, "sent-uncompressed-small-packets",
 440             "packet%s sent uncompressed; size < compr. algo. threshold");
 441         p(ipcomps_uncompr, "sent-uncompressed-useless-packets",
 442             "packet%s sent uncompressed; compression was useless");
 443
 444 #undef p
 445 #undef hist
 446         xo_close_container("ipcomp-statictics");
 447 }
 448
 449 void
 450 ipcomp_stats(u_long off, const char *name, int family __unused,
 451     int proto __unused)
 452 {
 453         struct ipcompstat ipcompstat;
 454
 455         if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat,
 456             sizeof(ipcompstat), kread_counters) != 0)
 457                 return;
 458
 459         xo_emit("{T:/%s}:\n", name);
 460
 461         print_ipcompstats(&ipcompstat);
 462 }
 463
 464 #endif /*IPSEC*/