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, "keyed-md5", }, 129 { SADB_X_AALG_SHA, "keyed-sha1", }, 130 { SADB_X_AALG_NULL, "null", }, 131 { SADB_X_AALG_SHA2_256, "hmac-sha2-256", }, 132 { SADB_X_AALG_SHA2_384, "hmac-sha2-384", }, 133 { SADB_X_AALG_SHA2_512, "hmac-sha2-512", }, 134 { SADB_X_AALG_RIPEMD160HMAC, "hmac-ripemd160", }, 135 { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", }, 136 { SADB_X_AALG_TCP_MD5, "tcp-md5", }, 137 { SADB_X_AALG_AES128GMAC, "aes-gmac-128", }, 138 { SADB_X_AALG_AES192GMAC, "aes-gmac-192", }, 139 { SADB_X_AALG_AES256GMAC, "aes-gmac-256", }, 140 { -1, NULL }, 141 }; 142 143 static struct val2str ipsec_espnames[] = { 144 { SADB_EALG_NONE, "none", }, 145 { SADB_EALG_DESCBC, "des-cbc", }, 146 { SADB_EALG_3DESCBC, "3des-cbc", }, 147 { SADB_EALG_NULL, "null", }, 148 { SADB_X_EALG_CAST128CBC, "cast128-cbc", }, 149 { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", }, 150 { SADB_X_EALG_RIJNDAELCBC, "rijndael-cbc", }, 151 { SADB_X_EALG_CAMELLIACBC, "camellia-cbc", }, 152 { SADB_X_EALG_AESCTR, "aes-ctr", }, 153 { SADB_X_EALG_AESGCM16, "aes-gcm-16", }, 154 { SADB_X_EALG_AESGMAC, "aes-gmac", }, 155 { -1, NULL }, 156 }; 157 158 static struct val2str ipsec_compnames[] = { 159 { SADB_X_CALG_NONE, "none", }, 160 { SADB_X_CALG_OUI, "oui", }, 161 { SADB_X_CALG_DEFLATE, "deflate", }, 162 { SADB_X_CALG_LZS, "lzs", }, 163 { -1, NULL }, 164 }; 165 166 static void print_ipsecstats(const struct ipsecstat *ipsecstat); 167 168 static void 169 print_ipsecstats(const struct ipsecstat *ipsecstat) 170 { 171 xo_open_container("ipsec-statistics"); 172 173 #define p(f, m) if (ipsecstat->f || sflag <= 1) \ 174 xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f)) 175 #define p2(f, m) if (ipsecstat->f || sflag <= 1) \ 176 xo_emit(m, (uintmax_t)ipsecstat->f, plurales(ipsecstat->f)) 177 178 p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} " 179 "{N:/inbound packet%s violated process security policy}\n"); 180 p(ips_in_nomem, "\t{:dropped-no-memory/%ju} " 181 "{N:/inbound packet%s failed due to insufficient memory}\n"); 182 p(ips_in_inval, "\t{:dropped-invalid/%ju} " 183 "{N:/invalid inbound packet%s}\n"); 184 p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} " 185 "{N:/outbound packet%s violated process security policy}\n"); 186 p(ips_out_nosa, "\t{:discarded-no-sa/%ju} " 187 "{N:/outbound packet%s with no SA available}\n"); 188 p(ips_out_nomem, "\t{:discarded-no-memory/%ju} " 189 "{N:/outbound packet%s failed due to insufficient memory}\n"); 190 p(ips_out_noroute, "\t{:discarded-no-route/%ju} " 191 "{N:/outbound packet%s with no route available}\n"); 192 p(ips_out_inval, "\t{:discarded-invalid/%ju} " 193 "{N:/invalid outbound packet%s}\n"); 194 p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} " 195 "{N:/outbound packet%s with bundled SAs}\n"); 196 p(ips_spdcache_hits, "\t{:spdcache-hits/%ju} " 197 "{N:/spd cache hit%s}\n"); 198 p2(ips_spdcache_misses, "\t{:spdcache-misses/%ju} " 199 "{N:/spd cache miss%s}\n"); 200 p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} " 201 "{N:/cluster%s copied during clone}\n"); 202 p(ips_mbinserted, "\t{:mbufs-inserted/%ju} " 203 "{N:/mbuf%s inserted during makespace}\n"); 204 #undef p2 205 #undef p 206 xo_close_container("ipsec-statistics"); 207 } 208 209 void 210 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 211 { 212 struct ipsecstat ipsecstat; 213 214 if (strcmp(name, "ipsec6") == 0) { 215 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat, 216 sizeof(ipsecstat), kread_counters) != 0) 217 return; 218 } else { 219 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat, 220 sizeof(ipsecstat), kread_counters) != 0) 221 return; 222 } 223 224 xo_emit("{T:/%s}:\n", name); 225 226 print_ipsecstats(&ipsecstat); 227 } 228 229 230 static void print_ahstats(const struct ahstat *ahstat); 231 static void print_espstats(const struct espstat *espstat); 232 static void print_ipcompstats(const struct ipcompstat *ipcompstat); 233 234 /* 235 * Dump IPSEC statistics structure. 236 */ 237 static void 238 ipsec_hist_new(const uint64_t *hist, size_t histmax, 239 const struct val2str *name, const char *title, const char *cname) 240 { 241 int first; 242 size_t proto; 243 const struct val2str *p; 244 245 first = 1; 246 for (proto = 0; proto < histmax; proto++) { 247 if (hist[proto] <= 0) 248 continue; 249 if (first) { 250 xo_open_list(cname); 251 xo_emit("\t{T:/%s histogram}:\n", title); 252 first = 0; 253 } 254 xo_open_instance(cname); 255 for (p = name; p && p->str; p++) { 256 if (p->val == (int)proto) 257 break; 258 } 259 if (p && p->str) { 260 xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str, 261 (uintmax_t)hist[proto]); 262 } else { 263 xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n", 264 (unsigned long)proto, (uintmax_t)hist[proto]); 265 } 266 xo_close_instance(cname); 267 } 268 if (!first) 269 xo_close_list(cname); 270 } 271 272 static void 273 print_ahstats(const struct ahstat *ahstat) 274 { 275 xo_open_container("ah-statictics"); 276 277 #define p(f, n, m) if (ahstat->f || sflag <= 1) \ 278 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 279 (uintmax_t)ahstat->f, plural(ahstat->f)) 280 #define hist(f, n, t, c) \ 281 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)) 282 283 p(ahs_hdrops, "dropped-short-header", 284 "packet%s shorter than header shows"); 285 p(ahs_nopf, "dropped-bad-protocol", 286 "packet%s dropped; protocol family not supported"); 287 p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 288 p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 289 p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 290 p(ahs_noxform, "dropped-no-transform", 291 "packet%s dropped; no transform"); 292 p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s"); 293 p(ahs_badauth, "dropped-bad-auth", 294 "packet%s dropped; bad authentication detected"); 295 p(ahs_badauthl, "dropped-bad-auth-level", 296 "packet%s dropped; bad authentication length"); 297 p(ahs_replay, "possile-replay-detected", 298 "possible replay packet%s detected"); 299 p(ahs_input, "received-packets", "packet%s in"); 300 p(ahs_output, "send-packets", "packet%s out"); 301 p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 302 p(ahs_ibytes, "received-bytes", "byte%s in"); 303 p(ahs_obytes, "send-bytes", "byte%s out"); 304 p(ahs_toobig, "dropped-too-large", 305 "packet%s dropped; larger than IP_MAXPACKET"); 306 p(ahs_pdrops, "dropped-policy-violation", 307 "packet%s blocked due to policy"); 308 p(ahs_crypto, "crypto-failures", "crypto processing failure%s"); 309 p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 310 hist(ahstat->ahs_hist, ipsec_ahnames, 311 "AH output", "ah-output-histogram"); 312 313 #undef p 314 #undef hist 315 xo_close_container("ah-statictics"); 316 } 317 318 void 319 ah_stats(u_long off, const char *name, int family __unused, int proto __unused) 320 { 321 struct ahstat ahstat; 322 323 if (fetch_stats("net.inet.ah.stats", off, &ahstat, 324 sizeof(ahstat), kread_counters) != 0) 325 return; 326 327 xo_emit("{T:/%s}:\n", name); 328 329 print_ahstats(&ahstat); 330 } 331 332 static void 333 print_espstats(const struct espstat *espstat) 334 { 335 xo_open_container("esp-statictics"); 336 #define p(f, n, m) if (espstat->f || sflag <= 1) \ 337 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 338 (uintmax_t)espstat->f, plural(espstat->f)) 339 #define hist(f, n, t, c) \ 340 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 341 342 p(esps_hdrops, "dropped-short-header", 343 "packet%s shorter than header shows"); 344 p(esps_nopf, "dropped-bad-protocol", 345 "packet%s dropped; protocol family not supported"); 346 p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 347 p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 348 p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 349 p(esps_noxform, "dropped-no-transform", 350 "packet%s dropped; no transform"); 351 p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen"); 352 p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 353 p(esps_badenc, "dropped-bad-crypto", 354 "packet%s dropped; bad encryption detected"); 355 p(esps_badauth, "dropped-bad-auth", 356 "packet%s dropped; bad authentication detected"); 357 p(esps_replay, "possible-replay-detected", 358 "possible replay packet%s detected"); 359 p(esps_input, "received-packets", "packet%s in"); 360 p(esps_output, "sent-packets", "packet%s out"); 361 p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 362 p(esps_ibytes, "receieve-bytes", "byte%s in"); 363 p(esps_obytes, "sent-bytes", "byte%s out"); 364 p(esps_toobig, "dropped-too-large", 365 "packet%s dropped; larger than IP_MAXPACKET"); 366 p(esps_pdrops, "dropped-policy-violation", 367 "packet%s blocked due to policy"); 368 p(esps_crypto, "crypto-failures", "crypto processing failure%s"); 369 p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 370 hist(espstat->esps_hist, ipsec_espnames, 371 "ESP output", "esp-output-histogram"); 372 373 #undef p 374 #undef hist 375 xo_close_container("esp-statictics"); 376 } 377 378 void 379 esp_stats(u_long off, const char *name, int family __unused, int proto __unused) 380 { 381 struct espstat espstat; 382 383 if (fetch_stats("net.inet.esp.stats", off, &espstat, 384 sizeof(espstat), kread_counters) != 0) 385 return; 386 387 xo_emit("{T:/%s}:\n", name); 388 389 print_espstats(&espstat); 390 } 391 392 static void 393 print_ipcompstats(const struct ipcompstat *ipcompstat) 394 { 395 xo_open_container("ipcomp-statictics"); 396 397 #define p(f, n, m) if (ipcompstat->f || sflag <= 1) \ 398 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 399 (uintmax_t)ipcompstat->f, plural(ipcompstat->f)) 400 #define hist(f, n, t, c) \ 401 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 402 403 p(ipcomps_hdrops, "dropped-short-header", 404 "packet%s shorter than header shows"); 405 p(ipcomps_nopf, "dropped-bad-protocol", 406 "packet%s dropped; protocol family not supported"); 407 p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 408 p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 409 p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 410 p(ipcomps_noxform, "dropped-no-transform", 411 "packet%s dropped; no transform"); 412 p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 413 p(ipcomps_input, "receieve-packets", "packet%s in"); 414 p(ipcomps_output, "sent-packets", "packet%s out"); 415 p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 416 p(ipcomps_ibytes, "receieved-bytes", "byte%s in"); 417 p(ipcomps_obytes, "sent-bytes", "byte%s out"); 418 p(ipcomps_toobig, "dropped-too-large", 419 "packet%s dropped; larger than IP_MAXPACKET"); 420 p(ipcomps_pdrops, "dropped-policy-violation", 421 "packet%s blocked due to policy"); 422 p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s"); 423 hist(ipcompstat->ipcomps_hist, ipsec_compnames, 424 "COMP output", "comp-output-histogram"); 425 p(ipcomps_threshold, "sent-uncompressed-small-packets", 426 "packet%s sent uncompressed; size < compr. algo. threshold"); 427 p(ipcomps_uncompr, "sent-uncompressed-useless-packets", 428 "packet%s sent uncompressed; compression was useless"); 429 430 #undef p 431 #undef hist 432 xo_close_container("ipcomp-statictics"); 433 } 434 435 void 436 ipcomp_stats(u_long off, const char *name, int family __unused, 437 int proto __unused) 438 { 439 struct ipcompstat ipcompstat; 440 441 if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat, 442 sizeof(ipcompstat), kread_counters) != 0) 443 return; 444 445 xo_emit("{T:/%s}:\n", name); 446 447 print_ipcompstats(&ipcompstat); 448 } 449 450 #endif /*IPSEC*/ 451