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