usr.bin/netstat/ipsec.c

   1 /*      $KAME: ipsec.c,v 1.33 2003/07/25 09:54:32 itojun Exp $  */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  *
   6  * Copyright (c) 2005 NTT Multimedia Communications Laboratories, Inc.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30 /*-
  31  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
  32  * All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. Neither the name of the project nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  */
  58 /*-
  59  * Copyright (c) 1983, 1988, 1993
  60  *      The Regents of the University of California.  All rights reserved.
  61  *
  62  * Redistribution and use in source and binary forms, with or without
  63  * modification, are permitted provided that the following conditions
  64  * are met:
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  * 2. Redistributions in binary form must reproduce the above copyright
  68  *    notice, this list of conditions and the following disclaimer in the
  69  *    documentation and/or other materials provided with the distribution.
  70  * 3. Neither the name of the University nor the names of its contributors
  71  *    may be used to endorse or promote products derived from this software
  72  *    without specific prior written permission.
  73  *
  74  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  75  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  76  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  77  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  78  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  79  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  80  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  81  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  82  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  83  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  84  * SUCH DAMAGE.
  85  */
  86
  87 #if 0
  88 #ifndef lint
  89 static char sccsid[] = "@(#)inet.c      8.5 (Berkeley) 5/24/95";
  90 #endif /* not lint */
  91 #endif
  92
  93 #include <sys/cdefs.h>
  94 __FBSDID("$FreeBSD$");
  95
  96 #include <sys/param.h>
  97 #include <sys/queue.h>
  98 #include <sys/socket.h>
  99 #include <sys/socketvar.h>
 100
 101 #include <netinet/in.h>
 102
 103 #ifdef IPSEC
 104 #include <netipsec/ipsec.h>
 105 #include <netipsec/ah_var.h>
 106 #include <netipsec/esp_var.h>
 107 #include <netipsec/ipcomp_var.h>
 108 #endif
 109
 110 #include <stdint.h>
 111 #include <stdio.h>
 112 #include <stdbool.h>
 113 #include <string.h>
 114 #include <unistd.h>
 115 #include <libxo/xo.h>
 116 #include "netstat.h"
 117
 118 #ifdef IPSEC
 119 struct val2str {
 120         int val;
 121         const char *str;
 122 };
 123
 124 static struct val2str ipsec_ahnames[] = {
 125         { SADB_AALG_NONE, "none", },
 126         { SADB_AALG_MD5HMAC, "hmac-md5", },
 127         { SADB_AALG_SHA1HMAC, "hmac-sha1", },
 128         { SADB_X_AALG_MD5, "md5", },
 129         { SADB_X_AALG_SHA, "sha", },
 130         { SADB_X_AALG_NULL, "null", },
 131 #ifdef SADB_X_AALG_SHA2_256
 132         { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
 133 #endif
 134 #ifdef SADB_X_AALG_SHA2_384
 135         { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
 136 #endif
 137 #ifdef SADB_X_AALG_SHA2_512
 138         { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
 139 #endif
 140 #ifdef SADB_X_AALG_RIPEMD160HMAC
 141         { SADB_X_AALG_RIPEMD160HMAC, "hmac-ripemd160", },
 142 #endif
 143 #ifdef SADB_X_AALG_AES_XCBC_MAC
 144         { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
 145 #endif
 146 #ifdef SADB_X_AALG_AES128GMAC
 147         { SADB_X_AALG_AES128GMAC, "aes-gmac-128", },
 148 #endif
 149 #ifdef SADB_X_AALG_AES192GMAC
 150         { SADB_X_AALG_AES192GMAC, "aes-gmac-192", },
 151 #endif
 152 #ifdef SADB_X_AALG_AES256GMAC
 153         { SADB_X_AALG_AES256GMAC, "aes-gmac-256", },
 154 #endif
 155         { -1, NULL },
 156 };
 157
 158 static struct val2str ipsec_espnames[] = {
 159         { SADB_EALG_NONE, "none", },
 160         { SADB_EALG_DESCBC, "des-cbc", },
 161         { SADB_EALG_3DESCBC, "3des-cbc", },
 162         { SADB_EALG_NULL, "null", },
 163         { SADB_X_EALG_CAST128CBC, "cast128-cbc", },
 164         { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
 165 #ifdef SADB_X_EALG_RIJNDAELCBC
 166         { SADB_X_EALG_RIJNDAELCBC, "rijndael-cbc", },
 167 #endif
 168 #ifdef SADB_X_EALG_AESCTR
 169         { SADB_X_EALG_AESCTR, "aes-ctr", },
 170 #endif
 171 #ifdef SADB_X_EALG_AESGCM16
 172         { SADB_X_EALG_AESGCM16, "aes-gcm-16", },
 173 #endif
 174         { -1, NULL },
 175 };
 176
 177 static struct val2str ipsec_compnames[] = {
 178         { SADB_X_CALG_NONE, "none", },
 179         { SADB_X_CALG_OUI, "oui", },
 180         { SADB_X_CALG_DEFLATE, "deflate", },
 181         { SADB_X_CALG_LZS, "lzs", },
 182         { -1, NULL },
 183 };
 184
 185 static void print_ipsecstats(const struct ipsecstat *ipsecstat);
 186
 187 static void
 188 print_ipsecstats(const struct ipsecstat *ipsecstat)
 189 {
 190         xo_open_container("ipsec-statistics");
 191
 192 #define p(f, m) if (ipsecstat->f || sflag <= 1) \
 193         xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f))
 194
 195         p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} "
 196             "{N:/inbound packet%s violated process security policy}\n");
 197         p(ips_in_nomem, "\t{:dropped-no-memory/%ju} "
 198             "{N:/inbound packet%s failed due to insufficient memory}\n");
 199         p(ips_in_inval, "\t{:dropped-invalid/%ju} "
 200             "{N:/invalid inbound packet%s}\n");
 201         p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} "
 202             "{N:/outbound packet%s violated process security policy}\n");
 203         p(ips_out_nosa, "\t{:discarded-no-sa/%ju} "
 204             "{N:/outbound packet%s with no SA available}\n");
 205         p(ips_out_nomem, "\t{:discarded-no-memory/%ju} "
 206             "{N:/outbound packet%s failed due to insufficient memory}\n");
 207         p(ips_out_noroute, "\t{:discarded-no-route/%ju} "
 208             "{N:/outbound packet%s with no route available}\n");
 209         p(ips_out_inval, "\t{:discarded-invalid/%ju} "
 210             "{N:/invalid outbound packet%s}\n");
 211         p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} "
 212             "{N:/outbound packet%s with bundled SAs}\n");
 213         p(ips_mbcoalesced, "\t{:mbufs-coalesced-during-clone/%ju} "
 214             "{N:/mbuf%s coalesced during clone}\n");
 215         p(ips_clcoalesced, "\t{:clusters-coalesced-during-clone/%ju} "
 216             "{N:/cluster%s coalesced during clone}\n");
 217         p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} "
 218             "{N:/cluster%s copied during clone}\n");
 219         p(ips_mbinserted, "\t{:mbufs-inserted/%ju} "
 220             "{N:/mbuf%s inserted during makespace}\n");
 221 #undef p
 222         xo_close_container("ipsec-statistics");
 223 }
 224
 225 void
 226 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 227 {
 228         struct ipsecstat ipsecstat;
 229
 230         if (strcmp(name, "ipsec6") == 0) {
 231                 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat,
 232                                 sizeof(ipsecstat), kread_counters) != 0)
 233                         return;
 234         } else {
 235                 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat,
 236                                 sizeof(ipsecstat), kread_counters) != 0)
 237                         return;
 238         }
 239
 240         xo_emit("{T:/%s}:\n", name);
 241
 242         print_ipsecstats(&ipsecstat);
 243 }
 244
 245
 246 static void print_ahstats(const struct ahstat *ahstat);
 247 static void print_espstats(const struct espstat *espstat);
 248 static void print_ipcompstats(const struct ipcompstat *ipcompstat);
 249
 250 /*
 251  * Dump IPSEC statistics structure.
 252  */
 253 static void
 254 ipsec_hist_new(const uint64_t *hist, size_t histmax,
 255     const struct val2str *name, const char *title, const char *cname)
 256 {
 257         int first;
 258         size_t proto;
 259         const struct val2str *p;
 260
 261         first = 1;
 262         for (proto = 0; proto < histmax; proto++) {
 263                 if (hist[proto] <= 0)
 264                         continue;
 265                 if (first) {
 266                         xo_open_list(cname);
 267                         xo_emit("\t{T:/%s histogram}:\n", title);
 268                         first = 0;
 269                 }
 270                 xo_open_instance(cname);
 271                 for (p = name; p && p->str; p++) {
 272                         if (p->val == (int)proto)
 273                                 break;
 274                 }
 275                 if (p && p->str) {
 276                         xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str,
 277                             (uintmax_t)hist[proto]);
 278                 } else {
 279                         xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n",
 280                             (unsigned long)proto, (uintmax_t)hist[proto]);
 281                 }
 282                 xo_close_instance(cname);
 283         }
 284         if (!first)
 285                 xo_close_list(cname);
 286 }
 287
 288 static void
 289 print_ahstats(const struct ahstat *ahstat)
 290 {
 291         xo_open_container("ah-statictics");
 292
 293 #define p(f, n, m) if (ahstat->f || sflag <= 1) \
 294         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",  \
 295             (uintmax_t)ahstat->f, plural(ahstat->f))
 296 #define hist(f, n, t, c) \
 297         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c))
 298
 299         p(ahs_hdrops, "dropped-short-header",
 300             "packet%s shorter than header shows");
 301         p(ahs_nopf, "dropped-bad-protocol",
 302             "packet%s dropped; protocol family not supported");
 303         p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 304         p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 305         p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 306         p(ahs_noxform, "dropped-no-transform",
 307             "packet%s dropped; no transform");
 308         p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s");
 309         p(ahs_badauth, "dropped-bad-auth",
 310             "packet%s dropped; bad authentication detected");
 311         p(ahs_badauthl, "dropped-bad-auth-level",
 312             "packet%s dropped; bad authentication length");
 313         p(ahs_replay, "possile-replay-detected",
 314             "possible replay packet%s detected");
 315         p(ahs_input, "received-packets", "packet%s in");
 316         p(ahs_output, "send-packets", "packet%s out");
 317         p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 318         p(ahs_ibytes, "received-bytes", "byte%s in");
 319         p(ahs_obytes, "send-bytes", "byte%s out");
 320         p(ahs_toobig, "dropped-too-large",
 321             "packet%s dropped; larger than IP_MAXPACKET");
 322         p(ahs_pdrops, "dropped-policy-violation",
 323             "packet%s blocked due to policy");
 324         p(ahs_crypto, "crypto-failures", "crypto processing failure%s");
 325         p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
 326         hist(ahstat->ahs_hist, ipsec_ahnames,
 327             "AH output", "ah-output-histogram");
 328
 329 #undef p
 330 #undef hist
 331         xo_close_container("ah-statictics");
 332 }
 333
 334 void
 335 ah_stats(u_long off, const char *name, int family __unused, int proto __unused)
 336 {
 337         struct ahstat ahstat;
 338
 339         if (fetch_stats("net.inet.ah.stats", off, &ahstat,
 340             sizeof(ahstat), kread_counters) != 0)
 341                 return;
 342
 343         xo_emit("{T:/%s}:\n", name);
 344
 345         print_ahstats(&ahstat);
 346 }
 347
 348 static void
 349 print_espstats(const struct espstat *espstat)
 350 {
 351         xo_open_container("esp-statictics");
 352 #define p(f, n, m) if (espstat->f || sflag <= 1)        \
 353         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",          \
 354             (uintmax_t)espstat->f, plural(espstat->f))
 355 #define hist(f, n, t, c) \
 356         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
 357
 358         p(esps_hdrops, "dropped-short-header",
 359             "packet%s shorter than header shows");
 360         p(esps_nopf, "dropped-bad-protocol",
 361             "packet%s dropped; protocol family not supported");
 362         p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 363         p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 364         p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 365         p(esps_noxform, "dropped-no-transform",
 366             "packet%s dropped; no transform");
 367         p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen");
 368         p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s");
 369         p(esps_badenc, "dropped-bad-crypto",
 370             "packet%s dropped; bad encryption detected");
 371         p(esps_badauth, "dropped-bad-auth",
 372             "packet%s dropped; bad authentication detected");
 373         p(esps_replay, "possible-replay-detected",
 374             "possible replay packet%s detected");
 375         p(esps_input, "received-packets", "packet%s in");
 376         p(esps_output, "sent-packets", "packet%s out");
 377         p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 378         p(esps_ibytes, "receieve-bytes", "byte%s in");
 379         p(esps_obytes, "sent-bytes", "byte%s out");
 380         p(esps_toobig, "dropped-too-large",
 381             "packet%s dropped; larger than IP_MAXPACKET");
 382         p(esps_pdrops, "dropped-policy-violation",
 383             "packet%s blocked due to policy");
 384         p(esps_crypto, "crypto-failures", "crypto processing failure%s");
 385         p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
 386         hist(espstat->esps_hist, ipsec_espnames,
 387             "ESP output", "esp-output-histogram");
 388
 389 #undef p
 390 #undef hist
 391         xo_close_container("esp-statictics");
 392 }
 393
 394 void
 395 esp_stats(u_long off, const char *name, int family __unused, int proto __unused)
 396 {
 397         struct espstat espstat;
 398
 399         if (fetch_stats("net.inet.esp.stats", off, &espstat,
 400             sizeof(espstat), kread_counters) != 0)
 401                 return;
 402
 403         xo_emit("{T:/%s}:\n", name);
 404
 405         print_espstats(&espstat);
 406 }
 407
 408 static void
 409 print_ipcompstats(const struct ipcompstat *ipcompstat)
 410 {
 411         xo_open_container("ipcomp-statictics");
 412
 413 #define p(f, n, m) if (ipcompstat->f || sflag <= 1)     \
 414         xo_emit("\t{:" n "/%ju} {N:/" m "}\n",          \
 415             (uintmax_t)ipcompstat->f, plural(ipcompstat->f))
 416 #define hist(f, n, t, c) \
 417         ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
 418
 419         p(ipcomps_hdrops, "dropped-short-header",
 420             "packet%s shorter than header shows");
 421         p(ipcomps_nopf, "dropped-bad-protocol",
 422             "packet%s dropped; protocol family not supported");
 423         p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
 424         p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
 425         p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
 426         p(ipcomps_noxform, "dropped-no-transform",
 427             "packet%s dropped; no transform");
 428         p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s");
 429         p(ipcomps_input, "receieve-packets", "packet%s in");
 430         p(ipcomps_output, "sent-packets", "packet%s out");
 431         p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
 432         p(ipcomps_ibytes, "receieved-bytes", "byte%s in");
 433         p(ipcomps_obytes, "sent-bytes", "byte%s out");
 434         p(ipcomps_toobig, "dropped-too-large",
 435             "packet%s dropped; larger than IP_MAXPACKET");
 436         p(ipcomps_pdrops, "dropped-policy-violation",
 437             "packet%s blocked due to policy");
 438         p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s");
 439         hist(ipcompstat->ipcomps_hist, ipsec_compnames,
 440             "COMP output", "comp-output-histogram");
 441         p(ipcomps_threshold, "sent-uncompressed-small-packets",
 442             "packet%s sent uncompressed; size < compr. algo. threshold");
 443         p(ipcomps_uncompr, "sent-uncompressed-useless-packets",
 444             "packet%s sent uncompressed; compression was useless");
 445
 446 #undef p
 447 #undef hist
 448         xo_close_container("ipcomp-statictics");
 449 }
 450
 451 void
 452 ipcomp_stats(u_long off, const char *name, int family __unused,
 453     int proto __unused)
 454 {
 455         struct ipcompstat ipcompstat;
 456
 457         if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat,
 458             sizeof(ipcompstat), kread_counters) != 0)
 459                 return;
 460
 461         xo_emit("{T:/%s}:\n", name);
 462
 463         print_ipcompstats(&ipcompstat);
 464 }
 465
 466 #endif /*IPSEC*/