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_SHA1HMAC, "hmac-sha1", }, 127 { SADB_X_AALG_NULL, "null", }, 128 { SADB_X_AALG_SHA2_256, "hmac-sha2-256", }, 129 { SADB_X_AALG_SHA2_384, "hmac-sha2-384", }, 130 { SADB_X_AALG_SHA2_512, "hmac-sha2-512", }, 131 { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", }, 132 { SADB_X_AALG_TCP_MD5, "tcp-md5", }, 133 { SADB_X_AALG_AES128GMAC, "aes-gmac-128", }, 134 { SADB_X_AALG_AES192GMAC, "aes-gmac-192", }, 135 { SADB_X_AALG_AES256GMAC, "aes-gmac-256", }, 136 { -1, NULL }, 137 }; 138 139 static struct val2str ipsec_espnames[] = { 140 { SADB_EALG_NONE, "none", }, 141 { SADB_EALG_NULL, "null", }, 142 { SADB_X_EALG_AESCBC, "aes-cbc", }, 143 { SADB_X_EALG_AESCTR, "aes-ctr", }, 144 { SADB_X_EALG_AESGCM16, "aes-gcm-16", }, 145 { SADB_X_EALG_AESGMAC, "aes-gmac", }, 146 { -1, NULL }, 147 }; 148 149 static struct val2str ipsec_compnames[] = { 150 { SADB_X_CALG_NONE, "none", }, 151 { SADB_X_CALG_OUI, "oui", }, 152 { SADB_X_CALG_DEFLATE, "deflate", }, 153 { SADB_X_CALG_LZS, "lzs", }, 154 { -1, NULL }, 155 }; 156 157 static void 158 print_ipsecstats(const char *tag, const struct ipsecstat *ipsecstat) 159 { 160 xo_open_container(tag); 161 162 #define p(f, m) if (ipsecstat->f || sflag <= 1) \ 163 xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f)) 164 #define p2(f, m) if (ipsecstat->f || sflag <= 1) \ 165 xo_emit(m, (uintmax_t)ipsecstat->f, plurales(ipsecstat->f)) 166 167 p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} " 168 "{N:/inbound packet%s violated process security policy}\n"); 169 p(ips_in_nomem, "\t{:dropped-no-memory/%ju} " 170 "{N:/inbound packet%s failed due to insufficient memory}\n"); 171 p(ips_in_inval, "\t{:dropped-invalid/%ju} " 172 "{N:/invalid inbound packet%s}\n"); 173 p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} " 174 "{N:/outbound packet%s violated process security policy}\n"); 175 p(ips_out_nosa, "\t{:discarded-no-sa/%ju} " 176 "{N:/outbound packet%s with no SA available}\n"); 177 p(ips_out_nomem, "\t{:discarded-no-memory/%ju} " 178 "{N:/outbound packet%s failed due to insufficient memory}\n"); 179 p(ips_out_noroute, "\t{:discarded-no-route/%ju} " 180 "{N:/outbound packet%s with no route available}\n"); 181 p(ips_out_inval, "\t{:discarded-invalid/%ju} " 182 "{N:/invalid outbound packet%s}\n"); 183 p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} " 184 "{N:/outbound packet%s with bundled SAs}\n"); 185 p(ips_spdcache_hits, "\t{:spdcache-hits/%ju} " 186 "{N:/spd cache hit%s}\n"); 187 p2(ips_spdcache_misses, "\t{:spdcache-misses/%ju} " 188 "{N:/spd cache miss%s}\n"); 189 p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} " 190 "{N:/cluster%s copied during clone}\n"); 191 p(ips_mbinserted, "\t{:mbufs-inserted/%ju} " 192 "{N:/mbuf%s inserted during makespace}\n"); 193 #undef p2 194 #undef p 195 xo_close_container(tag); 196 } 197 198 void 199 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 200 { 201 struct ipsecstat ipsecstat; 202 const char *tag; 203 204 if (strcmp(name, "ipsec6") == 0) { 205 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat, 206 sizeof(ipsecstat), kread_counters) != 0) 207 return; 208 tag = "ipsec6-statistics"; 209 } else { 210 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat, 211 sizeof(ipsecstat), kread_counters) != 0) 212 return; 213 tag = "ipsec-statistics"; 214 } 215 216 xo_emit("{T:/%s}:\n", name); 217 218 print_ipsecstats(tag, &ipsecstat); 219 } 220 221 222 static void print_ahstats(const struct ahstat *ahstat); 223 static void print_espstats(const struct espstat *espstat); 224 static void print_ipcompstats(const struct ipcompstat *ipcompstat); 225 226 /* 227 * Dump IPSEC statistics structure. 228 */ 229 static void 230 ipsec_hist_new(const uint64_t *hist, size_t histmax, 231 const struct val2str *name, const char *title, const char *cname) 232 { 233 int first; 234 size_t proto; 235 const struct val2str *p; 236 237 first = 1; 238 for (proto = 0; proto < histmax; proto++) { 239 if (hist[proto] <= 0) 240 continue; 241 if (first) { 242 xo_open_list(cname); 243 xo_emit("\t{T:/%s histogram}:\n", title); 244 first = 0; 245 } 246 xo_open_instance(cname); 247 for (p = name; p && p->str; p++) { 248 if (p->val == (int)proto) 249 break; 250 } 251 if (p && p->str) { 252 xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str, 253 (uintmax_t)hist[proto]); 254 } else { 255 xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n", 256 (unsigned long)proto, (uintmax_t)hist[proto]); 257 } 258 xo_close_instance(cname); 259 } 260 if (!first) 261 xo_close_list(cname); 262 } 263 264 static void 265 print_ahstats(const struct ahstat *ahstat) 266 { 267 xo_open_container("ah-statictics"); 268 269 #define p(f, n, m) if (ahstat->f || sflag <= 1) \ 270 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 271 (uintmax_t)ahstat->f, plural(ahstat->f)) 272 #define hist(f, n, t, c) \ 273 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)) 274 275 p(ahs_hdrops, "dropped-short-header", 276 "packet%s shorter than header shows"); 277 p(ahs_nopf, "dropped-bad-protocol", 278 "packet%s dropped; protocol family not supported"); 279 p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 280 p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 281 p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 282 p(ahs_noxform, "dropped-no-transform", 283 "packet%s dropped; no transform"); 284 p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s"); 285 p(ahs_badauth, "dropped-bad-auth", 286 "packet%s dropped; bad authentication detected"); 287 p(ahs_badauthl, "dropped-bad-auth-level", 288 "packet%s dropped; bad authentication length"); 289 p(ahs_replay, "possile-replay-detected", 290 "possible replay packet%s detected"); 291 p(ahs_input, "received-packets", "packet%s in"); 292 p(ahs_output, "send-packets", "packet%s out"); 293 p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 294 p(ahs_ibytes, "received-bytes", "byte%s in"); 295 p(ahs_obytes, "send-bytes", "byte%s out"); 296 p(ahs_toobig, "dropped-too-large", 297 "packet%s dropped; larger than IP_MAXPACKET"); 298 p(ahs_pdrops, "dropped-policy-violation", 299 "packet%s blocked due to policy"); 300 p(ahs_crypto, "crypto-failures", "crypto processing failure%s"); 301 p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 302 hist(ahstat->ahs_hist, ipsec_ahnames, 303 "AH output", "ah-output-histogram"); 304 305 #undef p 306 #undef hist 307 xo_close_container("ah-statictics"); 308 } 309 310 void 311 ah_stats(u_long off, const char *name, int family __unused, int proto __unused) 312 { 313 struct ahstat ahstat; 314 315 if (fetch_stats("net.inet.ah.stats", off, &ahstat, 316 sizeof(ahstat), kread_counters) != 0) 317 return; 318 319 xo_emit("{T:/%s}:\n", name); 320 321 print_ahstats(&ahstat); 322 } 323 324 static void 325 print_espstats(const struct espstat *espstat) 326 { 327 xo_open_container("esp-statictics"); 328 #define p(f, n, m) if (espstat->f || sflag <= 1) \ 329 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 330 (uintmax_t)espstat->f, plural(espstat->f)) 331 #define hist(f, n, t, c) \ 332 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 333 334 p(esps_hdrops, "dropped-short-header", 335 "packet%s shorter than header shows"); 336 p(esps_nopf, "dropped-bad-protocol", 337 "packet%s dropped; protocol family not supported"); 338 p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 339 p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 340 p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 341 p(esps_noxform, "dropped-no-transform", 342 "packet%s dropped; no transform"); 343 p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen"); 344 p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 345 p(esps_badenc, "dropped-bad-crypto", 346 "packet%s dropped; bad encryption detected"); 347 p(esps_badauth, "dropped-bad-auth", 348 "packet%s dropped; bad authentication detected"); 349 p(esps_replay, "possible-replay-detected", 350 "possible replay packet%s detected"); 351 p(esps_input, "received-packets", "packet%s in"); 352 p(esps_output, "sent-packets", "packet%s out"); 353 p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 354 p(esps_ibytes, "receieve-bytes", "byte%s in"); 355 p(esps_obytes, "sent-bytes", "byte%s out"); 356 p(esps_toobig, "dropped-too-large", 357 "packet%s dropped; larger than IP_MAXPACKET"); 358 p(esps_pdrops, "dropped-policy-violation", 359 "packet%s blocked due to policy"); 360 p(esps_crypto, "crypto-failures", "crypto processing failure%s"); 361 p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 362 hist(espstat->esps_hist, ipsec_espnames, 363 "ESP output", "esp-output-histogram"); 364 365 #undef p 366 #undef hist 367 xo_close_container("esp-statictics"); 368 } 369 370 void 371 esp_stats(u_long off, const char *name, int family __unused, int proto __unused) 372 { 373 struct espstat espstat; 374 375 if (fetch_stats("net.inet.esp.stats", off, &espstat, 376 sizeof(espstat), kread_counters) != 0) 377 return; 378 379 xo_emit("{T:/%s}:\n", name); 380 381 print_espstats(&espstat); 382 } 383 384 static void 385 print_ipcompstats(const struct ipcompstat *ipcompstat) 386 { 387 xo_open_container("ipcomp-statictics"); 388 389 #define p(f, n, m) if (ipcompstat->f || sflag <= 1) \ 390 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 391 (uintmax_t)ipcompstat->f, plural(ipcompstat->f)) 392 #define hist(f, n, t, c) \ 393 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 394 395 p(ipcomps_hdrops, "dropped-short-header", 396 "packet%s shorter than header shows"); 397 p(ipcomps_nopf, "dropped-bad-protocol", 398 "packet%s dropped; protocol family not supported"); 399 p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 400 p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 401 p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 402 p(ipcomps_noxform, "dropped-no-transform", 403 "packet%s dropped; no transform"); 404 p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 405 p(ipcomps_input, "receieve-packets", "packet%s in"); 406 p(ipcomps_output, "sent-packets", "packet%s out"); 407 p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 408 p(ipcomps_ibytes, "receieved-bytes", "byte%s in"); 409 p(ipcomps_obytes, "sent-bytes", "byte%s out"); 410 p(ipcomps_toobig, "dropped-too-large", 411 "packet%s dropped; larger than IP_MAXPACKET"); 412 p(ipcomps_pdrops, "dropped-policy-violation", 413 "packet%s blocked due to policy"); 414 p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s"); 415 hist(ipcompstat->ipcomps_hist, ipsec_compnames, 416 "COMP output", "comp-output-histogram"); 417 p(ipcomps_threshold, "sent-uncompressed-small-packets", 418 "packet%s sent uncompressed; size < compr. algo. threshold"); 419 p(ipcomps_uncompr, "sent-uncompressed-useless-packets", 420 "packet%s sent uncompressed; compression was useless"); 421 422 #undef p 423 #undef hist 424 xo_close_container("ipcomp-statictics"); 425 } 426 427 void 428 ipcomp_stats(u_long off, const char *name, int family __unused, 429 int proto __unused) 430 { 431 struct ipcompstat ipcompstat; 432 433 if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat, 434 sizeof(ipcompstat), kread_counters) != 0) 435 return; 436 437 xo_emit("{T:/%s}:\n", name); 438 439 print_ipcompstats(&ipcompstat); 440 } 441 442 #endif /*IPSEC*/ 443