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 #define p2(f, m) if (ipsecstat->f || sflag <= 1) \ 195 xo_emit(m, (uintmax_t)ipsecstat->f, plurales(ipsecstat->f)) 196 197 p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} " 198 "{N:/inbound packet%s violated process security policy}\n"); 199 p(ips_in_nomem, "\t{:dropped-no-memory/%ju} " 200 "{N:/inbound packet%s failed due to insufficient memory}\n"); 201 p(ips_in_inval, "\t{:dropped-invalid/%ju} " 202 "{N:/invalid inbound packet%s}\n"); 203 p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} " 204 "{N:/outbound packet%s violated process security policy}\n"); 205 p(ips_out_nosa, "\t{:discarded-no-sa/%ju} " 206 "{N:/outbound packet%s with no SA available}\n"); 207 p(ips_out_nomem, "\t{:discarded-no-memory/%ju} " 208 "{N:/outbound packet%s failed due to insufficient memory}\n"); 209 p(ips_out_noroute, "\t{:discarded-no-route/%ju} " 210 "{N:/outbound packet%s with no route available}\n"); 211 p(ips_out_inval, "\t{:discarded-invalid/%ju} " 212 "{N:/invalid outbound packet%s}\n"); 213 p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} " 214 "{N:/outbound packet%s with bundled SAs}\n"); 215 p(ips_spdcache_hits, "\t{:spdcache-hits/%ju} " 216 "{N:/spd cache hit%s}\n"); 217 p2(ips_spdcache_misses, "\t{:spdcache-misses/%ju} " 218 "{N:/spd cache miss%s}\n"); 219 p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} " 220 "{N:/cluster%s copied during clone}\n"); 221 p(ips_mbinserted, "\t{:mbufs-inserted/%ju} " 222 "{N:/mbuf%s inserted during makespace}\n"); 223 #undef p2 224 #undef p 225 xo_close_container("ipsec-statistics"); 226 } 227 228 void 229 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 230 { 231 struct ipsecstat ipsecstat; 232 233 if (strcmp(name, "ipsec6") == 0) { 234 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat, 235 sizeof(ipsecstat), kread_counters) != 0) 236 return; 237 } else { 238 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat, 239 sizeof(ipsecstat), kread_counters) != 0) 240 return; 241 } 242 243 xo_emit("{T:/%s}:\n", name); 244 245 print_ipsecstats(&ipsecstat); 246 } 247 248 249 static void print_ahstats(const struct ahstat *ahstat); 250 static void print_espstats(const struct espstat *espstat); 251 static void print_ipcompstats(const struct ipcompstat *ipcompstat); 252 253 /* 254 * Dump IPSEC statistics structure. 255 */ 256 static void 257 ipsec_hist_new(const uint64_t *hist, size_t histmax, 258 const struct val2str *name, const char *title, const char *cname) 259 { 260 int first; 261 size_t proto; 262 const struct val2str *p; 263 264 first = 1; 265 for (proto = 0; proto < histmax; proto++) { 266 if (hist[proto] <= 0) 267 continue; 268 if (first) { 269 xo_open_list(cname); 270 xo_emit("\t{T:/%s histogram}:\n", title); 271 first = 0; 272 } 273 xo_open_instance(cname); 274 for (p = name; p && p->str; p++) { 275 if (p->val == (int)proto) 276 break; 277 } 278 if (p && p->str) { 279 xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str, 280 (uintmax_t)hist[proto]); 281 } else { 282 xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n", 283 (unsigned long)proto, (uintmax_t)hist[proto]); 284 } 285 xo_close_instance(cname); 286 } 287 if (!first) 288 xo_close_list(cname); 289 } 290 291 static void 292 print_ahstats(const struct ahstat *ahstat) 293 { 294 xo_open_container("ah-statictics"); 295 296 #define p(f, n, m) if (ahstat->f || sflag <= 1) \ 297 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 298 (uintmax_t)ahstat->f, plural(ahstat->f)) 299 #define hist(f, n, t, c) \ 300 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)) 301 302 p(ahs_hdrops, "dropped-short-header", 303 "packet%s shorter than header shows"); 304 p(ahs_nopf, "dropped-bad-protocol", 305 "packet%s dropped; protocol family not supported"); 306 p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 307 p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 308 p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 309 p(ahs_noxform, "dropped-no-transform", 310 "packet%s dropped; no transform"); 311 p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s"); 312 p(ahs_badauth, "dropped-bad-auth", 313 "packet%s dropped; bad authentication detected"); 314 p(ahs_badauthl, "dropped-bad-auth-level", 315 "packet%s dropped; bad authentication length"); 316 p(ahs_replay, "possile-replay-detected", 317 "possible replay packet%s detected"); 318 p(ahs_input, "received-packets", "packet%s in"); 319 p(ahs_output, "send-packets", "packet%s out"); 320 p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 321 p(ahs_ibytes, "received-bytes", "byte%s in"); 322 p(ahs_obytes, "send-bytes", "byte%s out"); 323 p(ahs_toobig, "dropped-too-large", 324 "packet%s dropped; larger than IP_MAXPACKET"); 325 p(ahs_pdrops, "dropped-policy-violation", 326 "packet%s blocked due to policy"); 327 p(ahs_crypto, "crypto-failures", "crypto processing failure%s"); 328 p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 329 hist(ahstat->ahs_hist, ipsec_ahnames, 330 "AH output", "ah-output-histogram"); 331 332 #undef p 333 #undef hist 334 xo_close_container("ah-statictics"); 335 } 336 337 void 338 ah_stats(u_long off, const char *name, int family __unused, int proto __unused) 339 { 340 struct ahstat ahstat; 341 342 if (fetch_stats("net.inet.ah.stats", off, &ahstat, 343 sizeof(ahstat), kread_counters) != 0) 344 return; 345 346 xo_emit("{T:/%s}:\n", name); 347 348 print_ahstats(&ahstat); 349 } 350 351 static void 352 print_espstats(const struct espstat *espstat) 353 { 354 xo_open_container("esp-statictics"); 355 #define p(f, n, m) if (espstat->f || sflag <= 1) \ 356 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 357 (uintmax_t)espstat->f, plural(espstat->f)) 358 #define hist(f, n, t, c) \ 359 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 360 361 p(esps_hdrops, "dropped-short-header", 362 "packet%s shorter than header shows"); 363 p(esps_nopf, "dropped-bad-protocol", 364 "packet%s dropped; protocol family not supported"); 365 p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 366 p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 367 p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 368 p(esps_noxform, "dropped-no-transform", 369 "packet%s dropped; no transform"); 370 p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen"); 371 p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 372 p(esps_badenc, "dropped-bad-crypto", 373 "packet%s dropped; bad encryption detected"); 374 p(esps_badauth, "dropped-bad-auth", 375 "packet%s dropped; bad authentication detected"); 376 p(esps_replay, "possible-replay-detected", 377 "possible replay packet%s detected"); 378 p(esps_input, "received-packets", "packet%s in"); 379 p(esps_output, "sent-packets", "packet%s out"); 380 p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 381 p(esps_ibytes, "receieve-bytes", "byte%s in"); 382 p(esps_obytes, "sent-bytes", "byte%s out"); 383 p(esps_toobig, "dropped-too-large", 384 "packet%s dropped; larger than IP_MAXPACKET"); 385 p(esps_pdrops, "dropped-policy-violation", 386 "packet%s blocked due to policy"); 387 p(esps_crypto, "crypto-failures", "crypto processing failure%s"); 388 p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 389 hist(espstat->esps_hist, ipsec_espnames, 390 "ESP output", "esp-output-histogram"); 391 392 #undef p 393 #undef hist 394 xo_close_container("esp-statictics"); 395 } 396 397 void 398 esp_stats(u_long off, const char *name, int family __unused, int proto __unused) 399 { 400 struct espstat espstat; 401 402 if (fetch_stats("net.inet.esp.stats", off, &espstat, 403 sizeof(espstat), kread_counters) != 0) 404 return; 405 406 xo_emit("{T:/%s}:\n", name); 407 408 print_espstats(&espstat); 409 } 410 411 static void 412 print_ipcompstats(const struct ipcompstat *ipcompstat) 413 { 414 xo_open_container("ipcomp-statictics"); 415 416 #define p(f, n, m) if (ipcompstat->f || sflag <= 1) \ 417 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 418 (uintmax_t)ipcompstat->f, plural(ipcompstat->f)) 419 #define hist(f, n, t, c) \ 420 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 421 422 p(ipcomps_hdrops, "dropped-short-header", 423 "packet%s shorter than header shows"); 424 p(ipcomps_nopf, "dropped-bad-protocol", 425 "packet%s dropped; protocol family not supported"); 426 p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 427 p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 428 p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 429 p(ipcomps_noxform, "dropped-no-transform", 430 "packet%s dropped; no transform"); 431 p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 432 p(ipcomps_input, "receieve-packets", "packet%s in"); 433 p(ipcomps_output, "sent-packets", "packet%s out"); 434 p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 435 p(ipcomps_ibytes, "receieved-bytes", "byte%s in"); 436 p(ipcomps_obytes, "sent-bytes", "byte%s out"); 437 p(ipcomps_toobig, "dropped-too-large", 438 "packet%s dropped; larger than IP_MAXPACKET"); 439 p(ipcomps_pdrops, "dropped-policy-violation", 440 "packet%s blocked due to policy"); 441 p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s"); 442 hist(ipcompstat->ipcomps_hist, ipsec_compnames, 443 "COMP output", "comp-output-histogram"); 444 p(ipcomps_threshold, "sent-uncompressed-small-packets", 445 "packet%s sent uncompressed; size < compr. algo. threshold"); 446 p(ipcomps_uncompr, "sent-uncompressed-useless-packets", 447 "packet%s sent uncompressed; compression was useless"); 448 449 #undef p 450 #undef hist 451 xo_close_container("ipcomp-statictics"); 452 } 453 454 void 455 ipcomp_stats(u_long off, const char *name, int family __unused, 456 int proto __unused) 457 { 458 struct ipcompstat ipcompstat; 459 460 if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat, 461 sizeof(ipcompstat), kread_counters) != 0) 462 return; 463 464 xo_emit("{T:/%s}:\n", name); 465 466 print_ipcompstats(&ipcompstat); 467 } 468 469 #endif /*IPSEC*/ 470