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 #include <sys/param.h>
88 #include <sys/queue.h>
89 #include <sys/socket.h>
90 #include <sys/socketvar.h>
91
92 #include <netinet/in.h>
93
94 #ifdef IPSEC
95 #include <netipsec/ipsec.h>
96 #include <netipsec/ah_var.h>
97 #include <netipsec/esp_var.h>
98 #include <netipsec/ipcomp_var.h>
99 #endif
100
101 #include <stdint.h>
102 #include <stdio.h>
103 #include <stdbool.h>
104 #include <string.h>
105 #include <unistd.h>
106 #include <libxo/xo.h>
107 #include "netstat.h"
108
109 #ifdef IPSEC
110 struct val2str {
111 int val;
112 const char *str;
113 };
114
115 static struct val2str ipsec_ahnames[] = {
116 { SADB_AALG_NONE, "none", },
117 { SADB_AALG_SHA1HMAC, "hmac-sha1", },
118 { SADB_X_AALG_NULL, "null", },
119 { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
120 { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
121 { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
122 { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
123 { SADB_X_AALG_TCP_MD5, "tcp-md5", },
124 { SADB_X_AALG_AES128GMAC, "aes-gmac-128", },
125 { SADB_X_AALG_AES192GMAC, "aes-gmac-192", },
126 { SADB_X_AALG_AES256GMAC, "aes-gmac-256", },
127 { -1, NULL },
128 };
129
130 static struct val2str ipsec_espnames[] = {
131 { SADB_EALG_NONE, "none", },
132 { SADB_EALG_NULL, "null", },
133 { SADB_X_EALG_AESCBC, "aes-cbc", },
134 { SADB_X_EALG_AESCTR, "aes-ctr", },
135 { SADB_X_EALG_AESGCM16, "aes-gcm-16", },
136 { SADB_X_EALG_AESGMAC, "aes-gmac", },
137 { -1, NULL },
138 };
139
140 static struct val2str ipsec_compnames[] = {
141 { SADB_X_CALG_NONE, "none", },
142 { SADB_X_CALG_OUI, "oui", },
143 { SADB_X_CALG_DEFLATE, "deflate", },
144 { SADB_X_CALG_LZS, "lzs", },
145 { -1, NULL },
146 };
147
148 static void
print_ipsecstats(const char * tag,const struct ipsecstat * ipsecstat)149 print_ipsecstats(const char *tag, const struct ipsecstat *ipsecstat)
150 {
151 xo_open_container(tag);
152
153 #define p(f, m) if (ipsecstat->f || sflag <= 1) \
154 xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f))
155 #define p2(f, m) if (ipsecstat->f || sflag <= 1) \
156 xo_emit(m, (uintmax_t)ipsecstat->f, plurales(ipsecstat->f))
157
158 p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} "
159 "{N:/inbound packet%s violated process security policy}\n");
160 p(ips_in_nomem, "\t{:dropped-no-memory/%ju} "
161 "{N:/inbound packet%s failed due to insufficient memory}\n");
162 p(ips_in_inval, "\t{:dropped-invalid/%ju} "
163 "{N:/invalid inbound packet%s}\n");
164 p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} "
165 "{N:/outbound packet%s violated process security policy}\n");
166 p(ips_out_nosa, "\t{:discarded-no-sa/%ju} "
167 "{N:/outbound packet%s with no SA available}\n");
168 p(ips_out_nomem, "\t{:discarded-no-memory/%ju} "
169 "{N:/outbound packet%s failed due to insufficient memory}\n");
170 p(ips_out_noroute, "\t{:discarded-no-route/%ju} "
171 "{N:/outbound packet%s with no route available}\n");
172 p(ips_out_inval, "\t{:discarded-invalid/%ju} "
173 "{N:/invalid outbound packet%s}\n");
174 p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} "
175 "{N:/outbound packet%s with bundled SAs}\n");
176 p(ips_spdcache_hits, "\t{:spdcache-hits/%ju} "
177 "{N:/spd cache hit%s}\n");
178 p2(ips_spdcache_misses, "\t{:spdcache-misses/%ju} "
179 "{N:/spd cache miss%s}\n");
180 p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} "
181 "{N:/cluster%s copied during clone}\n");
182 p(ips_mbinserted, "\t{:mbufs-inserted/%ju} "
183 "{N:/mbuf%s inserted during makespace}\n");
184 #undef p2
185 #undef p
186 xo_close_container(tag);
187 }
188
189 void
ipsec_stats(u_long off,const char * name,int af1 __unused,int proto __unused)190 ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
191 {
192 struct ipsecstat ipsecstat;
193 const char *tag;
194
195 if (strcmp(name, "ipsec6") == 0) {
196 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat,
197 sizeof(ipsecstat), kread_counters) != 0)
198 return;
199 tag = "ipsec6-statistics";
200 } else {
201 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat,
202 sizeof(ipsecstat), kread_counters) != 0)
203 return;
204 tag = "ipsec-statistics";
205 }
206
207 xo_emit("{T:/%s}:\n", name);
208
209 print_ipsecstats(tag, &ipsecstat);
210 }
211
212
213 static void print_ahstats(const struct ahstat *ahstat);
214 static void print_espstats(const struct espstat *espstat);
215 static void print_ipcompstats(const struct ipcompstat *ipcompstat);
216
217 /*
218 * Dump IPSEC statistics structure.
219 */
220 static void
ipsec_hist_new(const uint64_t * hist,size_t histmax,const struct val2str * name,const char * title,const char * cname)221 ipsec_hist_new(const uint64_t *hist, size_t histmax,
222 const struct val2str *name, const char *title, const char *cname)
223 {
224 int first;
225 size_t proto;
226 const struct val2str *p;
227
228 first = 1;
229 for (proto = 0; proto < histmax; proto++) {
230 if (hist[proto] <= 0)
231 continue;
232 if (first) {
233 xo_open_list(cname);
234 xo_emit("\t{T:/%s histogram}:\n", title);
235 first = 0;
236 }
237 xo_open_instance(cname);
238 for (p = name; p && p->str; p++) {
239 if (p->val == (int)proto)
240 break;
241 }
242 if (p && p->str) {
243 xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str,
244 (uintmax_t)hist[proto]);
245 } else {
246 xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n",
247 (unsigned long)proto, (uintmax_t)hist[proto]);
248 }
249 xo_close_instance(cname);
250 }
251 if (!first)
252 xo_close_list(cname);
253 }
254
255 static void
print_ahstats(const struct ahstat * ahstat)256 print_ahstats(const struct ahstat *ahstat)
257 {
258 xo_open_container("ah-statictics");
259
260 #define p(f, n, m) if (ahstat->f || sflag <= 1) \
261 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \
262 (uintmax_t)ahstat->f, plural(ahstat->f))
263 #define hist(f, n, t, c) \
264 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c))
265
266 p(ahs_hdrops, "dropped-short-header",
267 "packet%s shorter than header shows");
268 p(ahs_nopf, "dropped-bad-protocol",
269 "packet%s dropped; protocol family not supported");
270 p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
271 p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
272 p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full");
273 p(ahs_noxform, "dropped-no-transform",
274 "packet%s dropped; no transform");
275 p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s");
276 p(ahs_badauth, "dropped-bad-auth",
277 "packet%s dropped; bad authentication detected");
278 p(ahs_badauthl, "dropped-bad-auth-level",
279 "packet%s dropped; bad authentication length");
280 p(ahs_replay, "possile-replay-detected",
281 "possible replay packet%s detected");
282 p(ahs_input, "received-packets", "packet%s in");
283 p(ahs_output, "send-packets", "packet%s out");
284 p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
285 p(ahs_ibytes, "received-bytes", "byte%s in");
286 p(ahs_obytes, "send-bytes", "byte%s out");
287 p(ahs_toobig, "dropped-too-large",
288 "packet%s dropped; larger than IP_MAXPACKET");
289 p(ahs_pdrops, "dropped-policy-violation",
290 "packet%s blocked due to policy");
291 p(ahs_crypto, "crypto-failures", "crypto processing failure%s");
292 p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
293 hist(ahstat->ahs_hist, ipsec_ahnames,
294 "AH output", "ah-output-histogram");
295
296 #undef p
297 #undef hist
298 xo_close_container("ah-statictics");
299 }
300
301 void
ah_stats(u_long off,const char * name,int family __unused,int proto __unused)302 ah_stats(u_long off, const char *name, int family __unused, int proto __unused)
303 {
304 struct ahstat ahstat;
305
306 if (fetch_stats("net.inet.ah.stats", off, &ahstat,
307 sizeof(ahstat), kread_counters) != 0)
308 return;
309
310 xo_emit("{T:/%s}:\n", name);
311
312 print_ahstats(&ahstat);
313 }
314
315 static void
print_espstats(const struct espstat * espstat)316 print_espstats(const struct espstat *espstat)
317 {
318 xo_open_container("esp-statictics");
319 #define p(f, n, m) if (espstat->f || sflag <= 1) \
320 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \
321 (uintmax_t)espstat->f, plural(espstat->f))
322 #define hist(f, n, t, c) \
323 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
324
325 p(esps_hdrops, "dropped-short-header",
326 "packet%s shorter than header shows");
327 p(esps_nopf, "dropped-bad-protocol",
328 "packet%s dropped; protocol family not supported");
329 p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
330 p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
331 p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
332 p(esps_noxform, "dropped-no-transform",
333 "packet%s dropped; no transform");
334 p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen");
335 p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s");
336 p(esps_badenc, "dropped-bad-crypto",
337 "packet%s dropped; bad encryption detected");
338 p(esps_badauth, "dropped-bad-auth",
339 "packet%s dropped; bad authentication detected");
340 p(esps_replay, "possible-replay-detected",
341 "possible replay packet%s detected");
342 p(esps_input, "received-packets", "packet%s in");
343 p(esps_output, "sent-packets", "packet%s out");
344 p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
345 p(esps_ibytes, "receive-bytes", "byte%s in");
346 p(esps_obytes, "sent-bytes", "byte%s out");
347 p(esps_toobig, "dropped-too-large",
348 "packet%s dropped; larger than IP_MAXPACKET");
349 p(esps_pdrops, "dropped-policy-violation",
350 "packet%s blocked due to policy");
351 p(esps_crypto, "crypto-failures", "crypto processing failure%s");
352 p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s");
353 hist(espstat->esps_hist, ipsec_espnames,
354 "ESP output", "esp-output-histogram");
355
356 #undef p
357 #undef hist
358 xo_close_container("esp-statictics");
359 }
360
361 void
esp_stats(u_long off,const char * name,int family __unused,int proto __unused)362 esp_stats(u_long off, const char *name, int family __unused, int proto __unused)
363 {
364 struct espstat espstat;
365
366 if (fetch_stats("net.inet.esp.stats", off, &espstat,
367 sizeof(espstat), kread_counters) != 0)
368 return;
369
370 xo_emit("{T:/%s}:\n", name);
371
372 print_espstats(&espstat);
373 }
374
375 static void
print_ipcompstats(const struct ipcompstat * ipcompstat)376 print_ipcompstats(const struct ipcompstat *ipcompstat)
377 {
378 xo_open_container("ipcomp-statictics");
379
380 #define p(f, n, m) if (ipcompstat->f || sflag <= 1) \
381 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \
382 (uintmax_t)ipcompstat->f, plural(ipcompstat->f))
383 #define hist(f, n, t, c) \
384 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c));
385
386 p(ipcomps_hdrops, "dropped-short-header",
387 "packet%s shorter than header shows");
388 p(ipcomps_nopf, "dropped-bad-protocol",
389 "packet%s dropped; protocol family not supported");
390 p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB");
391 p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR");
392 p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full");
393 p(ipcomps_noxform, "dropped-no-transform",
394 "packet%s dropped; no transform");
395 p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s");
396 p(ipcomps_input, "receive-packets", "packet%s in");
397 p(ipcomps_output, "sent-packets", "packet%s out");
398 p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB");
399 p(ipcomps_ibytes, "received-bytes", "byte%s in");
400 p(ipcomps_obytes, "sent-bytes", "byte%s out");
401 p(ipcomps_toobig, "dropped-too-large",
402 "packet%s dropped; larger than IP_MAXPACKET");
403 p(ipcomps_pdrops, "dropped-policy-violation",
404 "packet%s blocked due to policy");
405 p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s");
406 hist(ipcompstat->ipcomps_hist, ipsec_compnames,
407 "COMP output", "comp-output-histogram");
408 p(ipcomps_threshold, "sent-uncompressed-small-packets",
409 "packet%s sent uncompressed; size < compr. algo. threshold");
410 p(ipcomps_uncompr, "sent-uncompressed-useless-packets",
411 "packet%s sent uncompressed; compression was useless");
412
413 #undef p
414 #undef hist
415 xo_close_container("ipcomp-statictics");
416 }
417
418 void
ipcomp_stats(u_long off,const char * name,int family __unused,int proto __unused)419 ipcomp_stats(u_long off, const char *name, int family __unused,
420 int proto __unused)
421 {
422 struct ipcompstat ipcompstat;
423
424 if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat,
425 sizeof(ipcompstat), kread_counters) != 0)
426 return;
427
428 xo_emit("{T:/%s}:\n", name);
429
430 print_ipcompstats(&ipcompstat);
431 }
432
433 #endif /*IPSEC*/
434