1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright 2012 Milan Jurik. All rights reserved.
25 */
26
27 #include <stdio.h>
28 #include <string.h>
29 #include <fcntl.h>
30 #include <string.h>
31 #include <sys/types.h>
32 #include <sys/time.h>
33
34 #include <sys/stropts.h>
35 #include <sys/socket.h>
36 #include <net/if.h>
37 #include <netinet/in_systm.h>
38 #include <netinet/in.h>
39 #include <netinet/ip.h>
40 #include <netinet/ip6.h>
41 #include <netinet/ip_icmp.h>
42 #include <netinet/icmp6.h>
43 #include <netinet/if_ether.h>
44 #include <inet/ip.h>
45 #include <inet/ip6.h>
46 #include <arpa/inet.h>
47 #include <netdb.h>
48 #include <tsol/label.h>
49 #include <sys/tsol/tndb.h>
50 #include <sys/tsol/label_macro.h>
51
52 #include "snoop.h"
53
54
55 /*
56 * IPv6 extension header masks. These are used by the print_ipv6_extensions()
57 * function to return information to the caller about which extension headers
58 * were processed. This can be useful if the caller wants to know if the
59 * packet is an IPv6 fragment, for example.
60 */
61 #define SNOOP_HOPOPTS 0x01U
62 #define SNOOP_ROUTING 0x02U
63 #define SNOOP_DSTOPTS 0x04U
64 #define SNOOP_FRAGMENT 0x08U
65 #define SNOOP_AH 0x10U
66 #define SNOOP_ESP 0x20U
67 #define SNOOP_IPV6 0x40U
68
69 static void prt_routing_hdr(int, const struct ip6_rthdr *);
70 static void prt_fragment_hdr(int, const struct ip6_frag *);
71 static void prt_hbh_options(int, const struct ip6_hbh *);
72 static void prt_dest_options(int, const struct ip6_dest *);
73 static void print_route(const uchar_t *);
74 static void print_ipoptions(const uchar_t *, int);
75 static void print_ripso(const uchar_t *);
76 static void print_cipso(const uchar_t *);
77
78 /* Keep track of how many nested IP headers we have. */
79 unsigned int encap_levels;
80 unsigned int total_encap_levels = 1;
81
82 int
interpret_ip(int flags,const struct ip * ip,int fraglen)83 interpret_ip(int flags, const struct ip *ip, int fraglen)
84 {
85 uchar_t *data;
86 char buff[24];
87 boolean_t isfrag = B_FALSE;
88 boolean_t morefrag;
89 uint16_t fragoffset;
90 int hdrlen;
91 uint16_t iplen, uitmp;
92
93 if (ip->ip_v == IPV6_VERSION) {
94 iplen = interpret_ipv6(flags, (ip6_t *)ip, fraglen);
95 return (iplen);
96 }
97
98 if (encap_levels == 0)
99 total_encap_levels = 0;
100 encap_levels++;
101 total_encap_levels++;
102
103 hdrlen = ip->ip_hl * 4;
104 data = ((uchar_t *)ip) + hdrlen;
105 iplen = ntohs(ip->ip_len) - hdrlen;
106 fraglen -= hdrlen;
107 if (fraglen > iplen)
108 fraglen = iplen;
109 if (fraglen < 0) {
110 (void) snprintf(get_sum_line(), MAXLINE,
111 "IP truncated: header missing %d bytes", -fraglen);
112 encap_levels--;
113 return (fraglen + iplen);
114 }
115 /*
116 * We flag this as a fragment if the more fragments bit is set, or
117 * if the fragment offset is non-zero.
118 */
119 morefrag = (ntohs(ip->ip_off) & IP_MF) == 0 ? B_FALSE : B_TRUE;
120 fragoffset = (ntohs(ip->ip_off) & 0x1FFF) * 8;
121 if (morefrag || fragoffset != 0)
122 isfrag = B_TRUE;
123
124 src_name = addrtoname(AF_INET, &ip->ip_src);
125 dst_name = addrtoname(AF_INET, &ip->ip_dst);
126
127 if (flags & F_SUM) {
128 if (isfrag) {
129 (void) snprintf(get_sum_line(), MAXLINE,
130 "%s IP fragment ID=%d Offset=%-4d MF=%d TOS=0x%x "
131 "TTL=%d",
132 getproto(ip->ip_p),
133 ntohs(ip->ip_id),
134 fragoffset,
135 morefrag,
136 ip->ip_tos,
137 ip->ip_ttl);
138 } else {
139 (void) strlcpy(buff, inet_ntoa(ip->ip_dst),
140 sizeof (buff));
141 uitmp = ntohs(ip->ip_len);
142 (void) snprintf(get_sum_line(), MAXLINE,
143 "IP D=%s S=%s LEN=%u%s, ID=%d, TOS=0x%x, TTL=%d",
144 buff,
145 inet_ntoa(ip->ip_src),
146 uitmp,
147 iplen > fraglen ? "?" : "",
148 ntohs(ip->ip_id),
149 ip->ip_tos,
150 ip->ip_ttl);
151 }
152 }
153
154 if (flags & F_DTAIL) {
155 show_header("IP: ", "IP Header", iplen);
156 show_space();
157 (void) snprintf(get_line(0, 0), get_line_remain(),
158 "Version = %d", ip->ip_v);
159 (void) snprintf(get_line(0, 0), get_line_remain(),
160 "Header length = %d bytes", hdrlen);
161 (void) snprintf(get_line(0, 0), get_line_remain(),
162 "Type of service = 0x%02x", ip->ip_tos);
163 (void) snprintf(get_line(0, 0), get_line_remain(),
164 " xxx. .... = %d (precedence)",
165 ip->ip_tos >> 5);
166 (void) snprintf(get_line(0, 0), get_line_remain(),
167 " %s", getflag(ip->ip_tos, IPTOS_LOWDELAY,
168 "low delay", "normal delay"));
169 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
170 getflag(ip->ip_tos, IPTOS_THROUGHPUT,
171 "high throughput", "normal throughput"));
172 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
173 getflag(ip->ip_tos, IPTOS_RELIABILITY,
174 "high reliability", "normal reliability"));
175 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
176 getflag(ip->ip_tos, IPTOS_ECT,
177 "ECN capable transport", "not ECN capable transport"));
178 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
179 getflag(ip->ip_tos, IPTOS_CE,
180 "ECN congestion experienced",
181 "no ECN congestion experienced"));
182 /* warning: ip_len is signed in netinet/ip.h */
183 uitmp = ntohs(ip->ip_len);
184 (void) snprintf(get_line(0, 0), get_line_remain(),
185 "Total length = %u bytes%s", uitmp,
186 iplen > fraglen ? " -- truncated" : "");
187 (void) snprintf(get_line(0, 0), get_line_remain(),
188 "Identification = %d", ntohs(ip->ip_id));
189 /* warning: ip_off is signed in netinet/ip.h */
190 uitmp = ntohs(ip->ip_off);
191 (void) snprintf(get_line(0, 0), get_line_remain(),
192 "Flags = 0x%x", uitmp >> 12);
193 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
194 getflag(uitmp >> 8, IP_DF >> 8,
195 "do not fragment", "may fragment"));
196 (void) snprintf(get_line(0, 0), get_line_remain(), " %s",
197 getflag(uitmp >> 8, IP_MF >> 8,
198 "more fragments", "last fragment"));
199 (void) snprintf(get_line(0, 0), get_line_remain(),
200 "Fragment offset = %u bytes",
201 fragoffset);
202 (void) snprintf(get_line(0, 0), get_line_remain(),
203 "Time to live = %d seconds/hops",
204 ip->ip_ttl);
205 (void) snprintf(get_line(0, 0), get_line_remain(),
206 "Protocol = %d (%s)", ip->ip_p,
207 getproto(ip->ip_p));
208 /*
209 * XXX need to compute checksum and print whether it's correct
210 */
211 (void) snprintf(get_line(0, 0), get_line_remain(),
212 "Header checksum = %04x",
213 ntohs(ip->ip_sum));
214 (void) snprintf(get_line(0, 0), get_line_remain(),
215 "Source address = %s, %s",
216 inet_ntoa(ip->ip_src), addrtoname(AF_INET, &ip->ip_src));
217 (void) snprintf(get_line(0, 0), get_line_remain(),
218 "Destination address = %s, %s",
219 inet_ntoa(ip->ip_dst), addrtoname(AF_INET, &ip->ip_dst));
220
221 /* Print IP options - if any */
222
223 print_ipoptions((const uchar_t *)(ip + 1),
224 hdrlen - sizeof (struct ip));
225 show_space();
226 }
227
228 /*
229 * If we are in detail mode, and this is not the first fragment of
230 * a fragmented packet, print out a little line stating this.
231 * Otherwise, go to the next protocol layer only if this is not a
232 * fragment, or we are in detail mode and this is the first fragment
233 * of a fragmented packet.
234 */
235 if (flags & F_DTAIL && fragoffset != 0) {
236 (void) snprintf(get_detail_line(0, 0), MAXLINE,
237 "%s: [%d byte(s) of data, continuation of IP ident=%d]",
238 getproto(ip->ip_p),
239 iplen,
240 ntohs(ip->ip_id));
241 } else if (!isfrag || (flags & F_DTAIL) && isfrag && fragoffset == 0) {
242 /* go to the next protocol layer */
243
244 if (fraglen > 0) {
245 switch (ip->ip_p) {
246 case IPPROTO_IP:
247 break;
248 case IPPROTO_ENCAP:
249 (void) interpret_ip(flags,
250 /* LINTED: alignment */
251 (const struct ip *)data, fraglen);
252 break;
253 case IPPROTO_ICMP:
254 (void) interpret_icmp(flags,
255 /* LINTED: alignment */
256 (struct icmp *)data, iplen, fraglen);
257 break;
258 case IPPROTO_IGMP:
259 interpret_igmp(flags, data, iplen, fraglen);
260 break;
261 case IPPROTO_GGP:
262 break;
263 case IPPROTO_TCP:
264 (void) interpret_tcp(flags,
265 (struct tcphdr *)data, iplen, fraglen);
266 break;
267
268 case IPPROTO_ESP:
269 (void) interpret_esp(flags, data, iplen,
270 fraglen);
271 break;
272 case IPPROTO_AH:
273 (void) interpret_ah(flags, data, iplen,
274 fraglen);
275 break;
276
277 case IPPROTO_OSPF:
278 interpret_ospf(flags, data, iplen, fraglen);
279 break;
280
281 case IPPROTO_EGP:
282 case IPPROTO_PUP:
283 break;
284 case IPPROTO_UDP:
285 (void) interpret_udp(flags,
286 (struct udphdr *)data, iplen, fraglen);
287 break;
288
289 case IPPROTO_IDP:
290 case IPPROTO_HELLO:
291 case IPPROTO_ND:
292 case IPPROTO_RAW:
293 break;
294 case IPPROTO_IPV6: /* IPV6 encap */
295 /* LINTED: alignment */
296 (void) interpret_ipv6(flags, (ip6_t *)data,
297 iplen);
298 break;
299 case IPPROTO_SCTP:
300 (void) interpret_sctp(flags,
301 (struct sctp_hdr *)data, iplen, fraglen);
302 break;
303 }
304 }
305 }
306
307 encap_levels--;
308 return (iplen);
309 }
310
311 int
interpret_ipv6(int flags,const ip6_t * ip6h,int fraglen)312 interpret_ipv6(int flags, const ip6_t *ip6h, int fraglen)
313 {
314 uint8_t *data;
315 int hdrlen, iplen;
316 int version, flow, class;
317 uchar_t proto;
318 boolean_t isfrag = B_FALSE;
319 uint8_t extmask;
320 /*
321 * The print_srcname and print_dstname strings are the hostname
322 * parts of the verbose IPv6 header output, including the comma
323 * and the space after the litteral address strings.
324 */
325 char print_srcname[MAXHOSTNAMELEN + 2];
326 char print_dstname[MAXHOSTNAMELEN + 2];
327 char src_addrstr[INET6_ADDRSTRLEN];
328 char dst_addrstr[INET6_ADDRSTRLEN];
329
330 iplen = ntohs(ip6h->ip6_plen);
331 hdrlen = IPV6_HDR_LEN;
332 fraglen -= hdrlen;
333 if (fraglen < 0)
334 return (fraglen + hdrlen);
335 data = ((uint8_t *)ip6h) + hdrlen;
336
337 proto = ip6h->ip6_nxt;
338
339 src_name = addrtoname(AF_INET6, &ip6h->ip6_src);
340 dst_name = addrtoname(AF_INET6, &ip6h->ip6_dst);
341
342 /*
343 * Use endian-aware masks to extract traffic class and
344 * flowinfo. Also, flowinfo is now 20 bits and class 8
345 * rather than 24 and 4.
346 */
347 class = ntohl((ip6h->ip6_vcf & IPV6_FLOWINFO_TCLASS) >> 20);
348 flow = ntohl(ip6h->ip6_vcf & IPV6_FLOWINFO_FLOWLABEL);
349
350 /*
351 * NOTE: the F_SUM and F_DTAIL flags are mutually exclusive,
352 * so the code within the first part of the following if statement
353 * will not affect the detailed printing of the packet.
354 */
355 if (flags & F_SUM) {
356 (void) snprintf(get_sum_line(), MAXLINE,
357 "IPv6 S=%s D=%s LEN=%d HOPS=%d CLASS=0x%x FLOW=0x%x",
358 src_name, dst_name, iplen, ip6h->ip6_hops, class, flow);
359 } else if (flags & F_DTAIL) {
360
361 (void) inet_ntop(AF_INET6, &ip6h->ip6_src, src_addrstr,
362 INET6_ADDRSTRLEN);
363 (void) inet_ntop(AF_INET6, &ip6h->ip6_dst, dst_addrstr,
364 INET6_ADDRSTRLEN);
365
366 version = ntohl(ip6h->ip6_vcf) >> 28;
367
368 if (strcmp(src_name, src_addrstr) == 0) {
369 print_srcname[0] = '\0';
370 } else {
371 snprintf(print_srcname, sizeof (print_srcname),
372 ", %s", src_name);
373 }
374
375 if (strcmp(dst_name, dst_addrstr) == 0) {
376 print_dstname[0] = '\0';
377 } else {
378 snprintf(print_dstname, sizeof (print_dstname),
379 ", %s", dst_name);
380 }
381
382 show_header("IPv6: ", "IPv6 Header", iplen);
383 show_space();
384
385 (void) snprintf(get_line(0, 0), get_line_remain(),
386 "Version = %d", version);
387 (void) snprintf(get_line(0, 0), get_line_remain(),
388 "Traffic Class = %d", class);
389 (void) snprintf(get_line(0, 0), get_line_remain(),
390 "Flow label = 0x%x", flow);
391 (void) snprintf(get_line(0, 0), get_line_remain(),
392 "Payload length = %d", iplen);
393 (void) snprintf(get_line(0, 0), get_line_remain(),
394 "Next Header = %d (%s)", proto,
395 getproto(proto));
396 (void) snprintf(get_line(0, 0), get_line_remain(),
397 "Hop Limit = %d", ip6h->ip6_hops);
398 (void) snprintf(get_line(0, 0), get_line_remain(),
399 "Source address = %s%s", src_addrstr, print_srcname);
400 (void) snprintf(get_line(0, 0), get_line_remain(),
401 "Destination address = %s%s", dst_addrstr, print_dstname);
402
403 show_space();
404 }
405
406 /*
407 * Print IPv6 Extension Headers, or skip them in the summary case.
408 * Set isfrag to true if one of the extension headers encounterred
409 * was a fragment header.
410 */
411 if (proto == IPPROTO_HOPOPTS || proto == IPPROTO_DSTOPTS ||
412 proto == IPPROTO_ROUTING || proto == IPPROTO_FRAGMENT) {
413 extmask = print_ipv6_extensions(flags, &data, &proto, &iplen,
414 &fraglen);
415 if ((extmask & SNOOP_FRAGMENT) != 0) {
416 isfrag = B_TRUE;
417 }
418 }
419
420 /*
421 * We only want to print upper layer information if this is not
422 * a fragment, or if we're printing in detail. Note that the
423 * proto variable will be set to IPPROTO_NONE if this is a fragment
424 * with a non-zero fragment offset.
425 */
426 if (!isfrag || flags & F_DTAIL) {
427 /* go to the next protocol layer */
428
429 switch (proto) {
430 case IPPROTO_IP:
431 break;
432 case IPPROTO_ENCAP:
433 /* LINTED: alignment */
434 (void) interpret_ip(flags, (const struct ip *)data,
435 fraglen);
436 break;
437 case IPPROTO_ICMPV6:
438 /* LINTED: alignment */
439 (void) interpret_icmpv6(flags, (icmp6_t *)data, iplen,
440 fraglen);
441 break;
442 case IPPROTO_IGMP:
443 interpret_igmp(flags, data, iplen, fraglen);
444 break;
445 case IPPROTO_GGP:
446 break;
447 case IPPROTO_TCP:
448 (void) interpret_tcp(flags, (struct tcphdr *)data,
449 iplen, fraglen);
450 break;
451 case IPPROTO_ESP:
452 (void) interpret_esp(flags, data, iplen, fraglen);
453 break;
454 case IPPROTO_AH:
455 (void) interpret_ah(flags, data, iplen, fraglen);
456 break;
457 case IPPROTO_EGP:
458 case IPPROTO_PUP:
459 break;
460 case IPPROTO_UDP:
461 (void) interpret_udp(flags, (struct udphdr *)data,
462 iplen, fraglen);
463 break;
464 case IPPROTO_IDP:
465 case IPPROTO_HELLO:
466 case IPPROTO_ND:
467 case IPPROTO_RAW:
468 break;
469 case IPPROTO_IPV6:
470 /* LINTED: alignment */
471 (void) interpret_ipv6(flags, (const ip6_t *)data,
472 iplen);
473 break;
474 case IPPROTO_SCTP:
475 (void) interpret_sctp(flags, (struct sctp_hdr *)data,
476 iplen, fraglen);
477 break;
478 case IPPROTO_OSPF:
479 interpret_ospf6(flags, data, iplen, fraglen);
480 break;
481 }
482 }
483
484 return (iplen);
485 }
486
487 /*
488 * ip_ext: data including the extension header.
489 * iplen: length of the data remaining in the packet.
490 * Returns a mask of IPv6 extension headers it processed.
491 */
492 uint8_t
print_ipv6_extensions(int flags,uint8_t ** hdr,uint8_t * next,int * iplen,int * fraglen)493 print_ipv6_extensions(int flags, uint8_t **hdr, uint8_t *next, int *iplen,
494 int *fraglen)
495 {
496 uint8_t *data_ptr;
497 uchar_t proto = *next;
498 boolean_t is_extension_header;
499 struct ip6_hbh *ipv6ext_hbh;
500 struct ip6_dest *ipv6ext_dest;
501 struct ip6_rthdr *ipv6ext_rthdr;
502 struct ip6_frag *ipv6ext_frag;
503 uint32_t exthdrlen;
504 uint8_t extmask = 0;
505
506 if ((hdr == NULL) || (*hdr == NULL) || (next == NULL) || (iplen == 0))
507 return (0);
508
509 data_ptr = *hdr;
510 is_extension_header = B_TRUE;
511 while (is_extension_header) {
512
513 /*
514 * There must be at least enough data left to read the
515 * next header and header length fields from the next
516 * header.
517 */
518 if (*fraglen < 2) {
519 return (extmask);
520 }
521
522 switch (proto) {
523 case IPPROTO_HOPOPTS:
524 ipv6ext_hbh = (struct ip6_hbh *)data_ptr;
525 exthdrlen = 8 + ipv6ext_hbh->ip6h_len * 8;
526 if (*fraglen <= exthdrlen) {
527 return (extmask);
528 }
529 prt_hbh_options(flags, ipv6ext_hbh);
530 extmask |= SNOOP_HOPOPTS;
531 proto = ipv6ext_hbh->ip6h_nxt;
532 break;
533 case IPPROTO_DSTOPTS:
534 ipv6ext_dest = (struct ip6_dest *)data_ptr;
535 exthdrlen = 8 + ipv6ext_dest->ip6d_len * 8;
536 if (*fraglen <= exthdrlen) {
537 return (extmask);
538 }
539 prt_dest_options(flags, ipv6ext_dest);
540 extmask |= SNOOP_DSTOPTS;
541 proto = ipv6ext_dest->ip6d_nxt;
542 break;
543 case IPPROTO_ROUTING:
544 ipv6ext_rthdr = (struct ip6_rthdr *)data_ptr;
545 exthdrlen = 8 + ipv6ext_rthdr->ip6r_len * 8;
546 if (*fraglen <= exthdrlen) {
547 return (extmask);
548 }
549 prt_routing_hdr(flags, ipv6ext_rthdr);
550 extmask |= SNOOP_ROUTING;
551 proto = ipv6ext_rthdr->ip6r_nxt;
552 break;
553 case IPPROTO_FRAGMENT:
554 /* LINTED: alignment */
555 ipv6ext_frag = (struct ip6_frag *)data_ptr;
556 exthdrlen = sizeof (struct ip6_frag);
557 if (*fraglen <= exthdrlen) {
558 return (extmask);
559 }
560 prt_fragment_hdr(flags, ipv6ext_frag);
561 extmask |= SNOOP_FRAGMENT;
562 /*
563 * If this is not the first fragment, forget about
564 * the rest of the packet, snoop decoding is
565 * stateless.
566 */
567 if ((ipv6ext_frag->ip6f_offlg & IP6F_OFF_MASK) != 0)
568 proto = IPPROTO_NONE;
569 else
570 proto = ipv6ext_frag->ip6f_nxt;
571 break;
572 default:
573 is_extension_header = B_FALSE;
574 break;
575 }
576
577 if (is_extension_header) {
578 *iplen -= exthdrlen;
579 *fraglen -= exthdrlen;
580 data_ptr += exthdrlen;
581 }
582 }
583
584 *next = proto;
585 *hdr = data_ptr;
586 return (extmask);
587 }
588
589 static void
print_ipoptions(const uchar_t * opt,int optlen)590 print_ipoptions(const uchar_t *opt, int optlen)
591 {
592 int len;
593 int remain;
594 char *line;
595 const char *truncstr;
596
597 if (optlen <= 0) {
598 (void) snprintf(get_line(0, 0), get_line_remain(),
599 "No options");
600 return;
601 }
602
603 (void) snprintf(get_line(0, 0), get_line_remain(),
604 "Options: (%d bytes)", optlen);
605
606 while (optlen > 0) {
607 line = get_line(0, 0);
608 remain = get_line_remain();
609 len = opt[1];
610 truncstr = len > optlen ? "?" : "";
611 switch (opt[0]) {
612 case IPOPT_EOL:
613 (void) strlcpy(line, " - End of option list", remain);
614 return;
615 case IPOPT_NOP:
616 (void) strlcpy(line, " - No op", remain);
617 len = 1;
618 break;
619 case IPOPT_RR:
620 (void) snprintf(line, remain,
621 " - Record route (%d bytes%s)", len, truncstr);
622 print_route(opt);
623 break;
624 case IPOPT_TS:
625 (void) snprintf(line, remain,
626 " - Time stamp (%d bytes%s)", len, truncstr);
627 break;
628 case IPOPT_SECURITY:
629 (void) snprintf(line, remain, " - RIPSO (%d bytes%s)",
630 len, truncstr);
631 print_ripso(opt);
632 break;
633 case IPOPT_COMSEC:
634 (void) snprintf(line, remain, " - CIPSO (%d bytes%s)",
635 len, truncstr);
636 print_cipso(opt);
637 break;
638 case IPOPT_LSRR:
639 (void) snprintf(line, remain,
640 " - Loose source route (%d bytes%s)", len,
641 truncstr);
642 print_route(opt);
643 break;
644 case IPOPT_SATID:
645 (void) snprintf(line, remain,
646 " - SATNET Stream id (%d bytes%s)",
647 len, truncstr);
648 break;
649 case IPOPT_SSRR:
650 (void) snprintf(line, remain,
651 " - Strict source route, (%d bytes%s)", len,
652 truncstr);
653 print_route(opt);
654 break;
655 default:
656 (void) snprintf(line, remain,
657 " - Option %d (unknown - %d bytes%s) %s",
658 opt[0], len, truncstr,
659 tohex((char *)&opt[2], len - 2));
660 break;
661 }
662 if (len <= 0) {
663 (void) snprintf(line, remain,
664 " - Incomplete option len %d", len);
665 break;
666 }
667 opt += len;
668 optlen -= len;
669 }
670 }
671
672 static void
print_route(const uchar_t * opt)673 print_route(const uchar_t *opt)
674 {
675 int len, pointer, remain;
676 struct in_addr addr;
677 char *line;
678
679 len = opt[1];
680 pointer = opt[2];
681
682 (void) snprintf(get_line(0, 0), get_line_remain(),
683 " Pointer = %d", pointer);
684
685 pointer -= IPOPT_MINOFF;
686 opt += (IPOPT_OFFSET + 1);
687 len -= (IPOPT_OFFSET + 1);
688
689 while (len > 0) {
690 line = get_line(0, 0);
691 remain = get_line_remain();
692 memcpy((char *)&addr, opt, sizeof (addr));
693 if (addr.s_addr == INADDR_ANY)
694 (void) strlcpy(line, " -", remain);
695 else
696 (void) snprintf(line, remain, " %s",
697 addrtoname(AF_INET, &addr));
698 if (pointer == 0)
699 (void) strlcat(line, " <-- (current)", remain);
700
701 opt += sizeof (addr);
702 len -= sizeof (addr);
703 pointer -= sizeof (addr);
704 }
705 }
706
707 char *
getproto(int p)708 getproto(int p)
709 {
710 switch (p) {
711 case IPPROTO_HOPOPTS: return ("IPv6-HopOpts");
712 case IPPROTO_IPV6: return ("IPv6");
713 case IPPROTO_ROUTING: return ("IPv6-Route");
714 case IPPROTO_FRAGMENT: return ("IPv6-Frag");
715 case IPPROTO_RSVP: return ("RSVP");
716 case IPPROTO_ENCAP: return ("IP-in-IP");
717 case IPPROTO_AH: return ("AH");
718 case IPPROTO_ESP: return ("ESP");
719 case IPPROTO_ICMP: return ("ICMP");
720 case IPPROTO_ICMPV6: return ("ICMPv6");
721 case IPPROTO_DSTOPTS: return ("IPv6-DstOpts");
722 case IPPROTO_IGMP: return ("IGMP");
723 case IPPROTO_GGP: return ("GGP");
724 case IPPROTO_TCP: return ("TCP");
725 case IPPROTO_EGP: return ("EGP");
726 case IPPROTO_PUP: return ("PUP");
727 case IPPROTO_UDP: return ("UDP");
728 case IPPROTO_IDP: return ("IDP");
729 case IPPROTO_HELLO: return ("HELLO");
730 case IPPROTO_ND: return ("ND");
731 case IPPROTO_EON: return ("EON");
732 case IPPROTO_RAW: return ("RAW");
733 case IPPROTO_OSPF: return ("OSPF");
734 default: return ("");
735 }
736 }
737
738 static void
prt_routing_hdr(int flags,const struct ip6_rthdr * ipv6ext_rthdr)739 prt_routing_hdr(int flags, const struct ip6_rthdr *ipv6ext_rthdr)
740 {
741 uint8_t nxt_hdr;
742 uint8_t type;
743 uint32_t len;
744 uint8_t segleft;
745 uint32_t numaddrs;
746 int i;
747 struct ip6_rthdr0 *ipv6ext_rthdr0;
748 struct in6_addr *addrs;
749 char addr[INET6_ADDRSTRLEN];
750
751 /* in summary mode, we don't do anything. */
752 if (flags & F_SUM) {
753 return;
754 }
755
756 nxt_hdr = ipv6ext_rthdr->ip6r_nxt;
757 type = ipv6ext_rthdr->ip6r_type;
758 len = 8 * (ipv6ext_rthdr->ip6r_len + 1);
759 segleft = ipv6ext_rthdr->ip6r_segleft;
760
761 show_header("IPv6-Route: ", "IPv6 Routing Header", 0);
762 show_space();
763
764 (void) snprintf(get_line(0, 0), get_line_remain(),
765 "Next header = %d (%s)", nxt_hdr, getproto(nxt_hdr));
766 (void) snprintf(get_line(0, 0), get_line_remain(),
767 "Header length = %d", len);
768 (void) snprintf(get_line(0, 0), get_line_remain(),
769 "Routing type = %d", type);
770 (void) snprintf(get_line(0, 0), get_line_remain(),
771 "Segments left = %d", segleft);
772
773 if (type == IPV6_RTHDR_TYPE_0) {
774 /*
775 * XXX This loop will print all addresses in the routing header,
776 * XXX not just the segments left.
777 * XXX (The header length field is twice the number of
778 * XXX addresses)
779 * XXX At some future time, we may want to change this
780 * XXX to differentiate between the hops yet to do
781 * XXX and the hops already taken.
782 */
783 /* LINTED: alignment */
784 ipv6ext_rthdr0 = (struct ip6_rthdr0 *)ipv6ext_rthdr;
785 numaddrs = ipv6ext_rthdr0->ip6r0_len / 2;
786 addrs = (struct in6_addr *)(ipv6ext_rthdr0 + 1);
787 for (i = 0; i < numaddrs; i++) {
788 (void) inet_ntop(AF_INET6, &addrs[i], addr,
789 INET6_ADDRSTRLEN);
790 (void) snprintf(get_line(0, 0), get_line_remain(),
791 "address[%d]=%s", i, addr);
792 }
793 }
794
795 show_space();
796 }
797
798 static void
prt_fragment_hdr(int flags,const struct ip6_frag * ipv6ext_frag)799 prt_fragment_hdr(int flags, const struct ip6_frag *ipv6ext_frag)
800 {
801 boolean_t morefrag;
802 uint16_t fragoffset;
803 uint8_t nxt_hdr;
804 uint32_t fragident;
805
806 /* extract the various fields from the fragment header */
807 nxt_hdr = ipv6ext_frag->ip6f_nxt;
808 morefrag = (ipv6ext_frag->ip6f_offlg & IP6F_MORE_FRAG) == 0
809 ? B_FALSE : B_TRUE;
810 fragoffset = ntohs(ipv6ext_frag->ip6f_offlg & IP6F_OFF_MASK);
811 fragident = ntohl(ipv6ext_frag->ip6f_ident);
812
813 if (flags & F_SUM) {
814 (void) snprintf(get_sum_line(), MAXLINE,
815 "IPv6 fragment ID=%u Offset=%-4d MF=%d",
816 fragident,
817 fragoffset,
818 morefrag);
819 } else { /* F_DTAIL */
820 show_header("IPv6-Frag: ", "IPv6 Fragment Header", 0);
821 show_space();
822
823 (void) snprintf(get_line(0, 0), get_line_remain(),
824 "Next Header = %d (%s)", nxt_hdr, getproto(nxt_hdr));
825 (void) snprintf(get_line(0, 0), get_line_remain(),
826 "Fragment Offset = %d", fragoffset);
827 (void) snprintf(get_line(0, 0), get_line_remain(),
828 "More Fragments Flag = %s", morefrag ? "true" : "false");
829 (void) snprintf(get_line(0, 0), get_line_remain(),
830 "Identification = %u", fragident);
831
832 show_space();
833 }
834 }
835
836 static void
print_ip6opt_ls(const uchar_t * data,unsigned int op_len)837 print_ip6opt_ls(const uchar_t *data, unsigned int op_len)
838 {
839 uint32_t doi;
840 uint8_t sotype, solen;
841 uint16_t value, value2;
842 char *cp;
843 int remlen;
844 boolean_t printed;
845
846 (void) snprintf(get_line(0, 0), get_line_remain(),
847 "Labeled Security Option len = %u bytes%s", op_len,
848 op_len < sizeof (uint32_t) || (op_len & 1) != 0 ? "?" : "");
849 if (op_len < sizeof (uint32_t))
850 return;
851 GETINT32(doi, data);
852 (void) snprintf(get_line(0, 0), get_line_remain(),
853 " DOI = %d (%s)", doi, doi == IP6LS_DOI_V4 ? "IPv4" : "???");
854 op_len -= sizeof (uint32_t);
855 while (op_len > 0) {
856 GETINT8(sotype, data);
857 if (op_len < 2) {
858 (void) snprintf(get_line(0, 0), get_line_remain(),
859 " truncated %u suboption (no len)", sotype);
860 break;
861 }
862 GETINT8(solen, data);
863 if (solen < 2 || solen > op_len) {
864 (void) snprintf(get_line(0, 0), get_line_remain(),
865 " bad %u suboption (len 2 <= %u <= %u)",
866 sotype, solen, op_len);
867 if (solen < 2)
868 solen = 2;
869 if (solen > op_len)
870 solen = op_len;
871 }
872 op_len -= solen;
873 solen -= 2;
874 cp = get_line(0, 0);
875 remlen = get_line_remain();
876 (void) strlcpy(cp, " ", remlen);
877 cp += 4;
878 remlen -= 4;
879 printed = B_TRUE;
880 switch (sotype) {
881 case IP6LS_TT_LEVEL:
882 if (solen != 2) {
883 printed = B_FALSE;
884 break;
885 }
886 GETINT16(value, data);
887 (void) snprintf(cp, remlen, "Level %u", value);
888 solen = 0;
889 break;
890 case IP6LS_TT_VECTOR:
891 (void) strlcpy(cp, "Bit-Vector: ", remlen);
892 remlen -= strlen(cp);
893 cp += strlen(cp);
894 while (solen > 1) {
895 GETINT16(value, data);
896 solen -= 2;
897 (void) snprintf(cp, remlen, "%04x", value);
898 remlen -= strlen(cp);
899 cp += strlen(cp);
900 }
901 break;
902 case IP6LS_TT_ENUM:
903 (void) strlcpy(cp, "Enumeration:", remlen);
904 remlen -= strlen(cp);
905 cp += strlen(cp);
906 while (solen > 1) {
907 GETINT16(value, data);
908 solen -= 2;
909 (void) snprintf(cp, remlen, " %u", value);
910 remlen -= strlen(cp);
911 cp += strlen(cp);
912 }
913 break;
914 case IP6LS_TT_RANGES:
915 (void) strlcpy(cp, "Ranges:", remlen);
916 remlen -= strlen(cp);
917 cp += strlen(cp);
918 while (solen > 3) {
919 GETINT16(value, data);
920 GETINT16(value2, data);
921 solen -= 4;
922 (void) snprintf(cp, remlen, " %u-%u", value,
923 value2);
924 remlen -= strlen(cp);
925 cp += strlen(cp);
926 }
927 break;
928 case IP6LS_TT_V4:
929 (void) strlcpy(cp, "IPv4 Option", remlen);
930 print_ipoptions(data, solen);
931 solen = 0;
932 break;
933 case IP6LS_TT_DEST:
934 (void) snprintf(cp, remlen,
935 "Destination-Only Data length %u", solen);
936 solen = 0;
937 break;
938 default:
939 (void) snprintf(cp, remlen,
940 " unknown %u suboption (len %u)", sotype, solen);
941 solen = 0;
942 break;
943 }
944 if (solen != 0) {
945 if (printed) {
946 cp = get_line(0, 0);
947 remlen = get_line_remain();
948 }
949 (void) snprintf(cp, remlen,
950 " malformed %u suboption (remaining %u)",
951 sotype, solen);
952 data += solen;
953 }
954 }
955 }
956
957 static void
prt_hbh_options(int flags,const struct ip6_hbh * ipv6ext_hbh)958 prt_hbh_options(int flags, const struct ip6_hbh *ipv6ext_hbh)
959 {
960 const uint8_t *data, *ndata;
961 uint32_t len;
962 uint8_t op_type;
963 uint8_t op_len;
964 uint8_t nxt_hdr;
965
966 /* in summary mode, we don't do anything. */
967 if (flags & F_SUM) {
968 return;
969 }
970
971 show_header("IPv6-HopOpts: ", "IPv6 Hop-by-Hop Options Header", 0);
972 show_space();
973
974 /*
975 * Store the lengh of this ext hdr in bytes. The caller has
976 * ensured that there is at least len bytes of data left.
977 */
978 len = ipv6ext_hbh->ip6h_len * 8 + 8;
979
980 ndata = (const uint8_t *)ipv6ext_hbh + 2;
981 len -= 2;
982
983 nxt_hdr = ipv6ext_hbh->ip6h_nxt;
984 (void) snprintf(get_line(0, 0), get_line_remain(),
985 "Next Header = %u (%s)", nxt_hdr, getproto(nxt_hdr));
986
987 while (len > 0) {
988 data = ndata;
989 GETINT8(op_type, data);
990 /* This is the only one-octet IPv6 option */
991 if (op_type == IP6OPT_PAD1) {
992 (void) snprintf(get_line(0, 0), get_line_remain(),
993 "pad1 option ");
994 len--;
995 ndata = data;
996 continue;
997 }
998 GETINT8(op_len, data);
999 if (len < 2 || op_len + 2 > len) {
1000 (void) snprintf(get_line(0, 0), get_line_remain(),
1001 "Error: option %u truncated (%u + 2 > %u)",
1002 op_type, op_len, len);
1003 op_len = len - 2;
1004 /*
1005 * Continue processing the malformed option so that we
1006 * can display as much as possible.
1007 */
1008 }
1009
1010 /* advance pointers to the next option */
1011 len -= op_len + 2;
1012 ndata = data + op_len;
1013
1014 /* process this option */
1015 switch (op_type) {
1016 case IP6OPT_PADN:
1017 (void) snprintf(get_line(0, 0), get_line_remain(),
1018 "padN option len = %u", op_len);
1019 break;
1020 case IP6OPT_JUMBO: {
1021 uint32_t payload_len;
1022
1023 (void) snprintf(get_line(0, 0), get_line_remain(),
1024 "Jumbo Payload Option len = %u bytes%s", op_len,
1025 op_len == sizeof (uint32_t) ? "" : "?");
1026 if (op_len == sizeof (uint32_t)) {
1027 GETINT32(payload_len, data);
1028 (void) snprintf(get_line(0, 0),
1029 get_line_remain(),
1030 "Jumbo Payload Length = %u bytes",
1031 payload_len);
1032 }
1033 break;
1034 }
1035 case IP6OPT_ROUTER_ALERT: {
1036 uint16_t value;
1037 const char *label[] = {"MLD", "RSVP", "AN"};
1038
1039 (void) snprintf(get_line(0, 0), get_line_remain(),
1040 "Router Alert Option len = %u bytes%s", op_len,
1041 op_len == sizeof (uint16_t) ? "" : "?");
1042 if (op_len == sizeof (uint16_t)) {
1043 GETINT16(value, data);
1044 (void) snprintf(get_line(0, 0),
1045 get_line_remain(),
1046 "Alert Type = %d (%s)", value,
1047 value < sizeof (label) / sizeof (label[0]) ?
1048 label[value] : "???");
1049 }
1050 break;
1051 }
1052 case IP6OPT_LS:
1053 print_ip6opt_ls(data, op_len);
1054 break;
1055 default:
1056 (void) snprintf(get_line(0, 0), get_line_remain(),
1057 "Option type = %u, len = %u", op_type, op_len);
1058 break;
1059 }
1060 }
1061
1062 show_space();
1063 }
1064
1065 static void
prt_dest_options(int flags,const struct ip6_dest * ipv6ext_dest)1066 prt_dest_options(int flags, const struct ip6_dest *ipv6ext_dest)
1067 {
1068 const uint8_t *data, *ndata;
1069 uint32_t len;
1070 uint8_t op_type;
1071 uint32_t op_len;
1072 uint8_t nxt_hdr;
1073 uint8_t value;
1074
1075 /* in summary mode, we don't do anything. */
1076 if (flags & F_SUM) {
1077 return;
1078 }
1079
1080 show_header("IPv6-DstOpts: ", "IPv6 Destination Options Header", 0);
1081 show_space();
1082
1083 /*
1084 * Store the length of this ext hdr in bytes. The caller has
1085 * ensured that there is at least len bytes of data left.
1086 */
1087 len = ipv6ext_dest->ip6d_len * 8 + 8;
1088
1089 ndata = (const uint8_t *)ipv6ext_dest + 2; /* skip hdr/len */
1090 len -= 2;
1091
1092 nxt_hdr = ipv6ext_dest->ip6d_nxt;
1093 (void) snprintf(get_line(0, 0), get_line_remain(),
1094 "Next Header = %u (%s)", nxt_hdr, getproto(nxt_hdr));
1095
1096 while (len > 0) {
1097 data = ndata;
1098 GETINT8(op_type, data);
1099 if (op_type == IP6OPT_PAD1) {
1100 (void) snprintf(get_line(0, 0), get_line_remain(),
1101 "pad1 option ");
1102 len--;
1103 ndata = data;
1104 continue;
1105 }
1106 GETINT8(op_len, data);
1107 if (len < 2 || op_len + 2 > len) {
1108 (void) snprintf(get_line(0, 0), get_line_remain(),
1109 "Error: option %u truncated (%u + 2 > %u)",
1110 op_type, op_len, len);
1111 op_len = len - 2;
1112 /*
1113 * Continue processing the malformed option so that we
1114 * can display as much as possible.
1115 */
1116 }
1117
1118 /* advance pointers to the next option */
1119 len -= op_len + 2;
1120 ndata = data + op_len;
1121
1122 /* process this option */
1123 switch (op_type) {
1124 case IP6OPT_PADN:
1125 (void) snprintf(get_line(0, 0), get_line_remain(),
1126 "padN option len = %u", op_len);
1127 break;
1128 case IP6OPT_TUNNEL_LIMIT:
1129 GETINT8(value, data);
1130 (void) snprintf(get_line(0, 0), get_line_remain(),
1131 "tunnel encapsulation limit len = %d, value = %d",
1132 op_len, value);
1133 break;
1134 case IP6OPT_LS:
1135 print_ip6opt_ls(data, op_len);
1136 break;
1137 default:
1138 (void) snprintf(get_line(0, 0), get_line_remain(),
1139 "Option type = %u, len = %u", op_type, op_len);
1140 break;
1141 }
1142 }
1143
1144 show_space();
1145 }
1146
1147 #define ALABEL_MAXLEN 256
1148
1149 static char ascii_label[ALABEL_MAXLEN];
1150 static char *plabel = ascii_label;
1151
1152 struct snoop_pair {
1153 int val;
1154 const char *name;
1155 };
1156
1157 static struct snoop_pair ripso_class_tbl[] = {
1158 TSOL_CL_TOP_SECRET, "TOP SECRET",
1159 TSOL_CL_SECRET, "SECRET",
1160 TSOL_CL_CONFIDENTIAL, "CONFIDENTIAL",
1161 TSOL_CL_UNCLASSIFIED, "UNCLASSIFIED",
1162 -1, NULL
1163 };
1164
1165 static struct snoop_pair ripso_prot_tbl[] = {
1166 TSOL_PA_GENSER, "GENSER",
1167 TSOL_PA_SIOP_ESI, "SIOP-ESI",
1168 TSOL_PA_SCI, "SCI",
1169 TSOL_PA_NSA, "NSA",
1170 TSOL_PA_DOE, "DOE",
1171 0x04, "UNASSIGNED",
1172 0x02, "UNASSIGNED",
1173 -1, NULL
1174 };
1175
1176 static struct snoop_pair *
get_pair_byval(struct snoop_pair pairlist[],int val)1177 get_pair_byval(struct snoop_pair pairlist[], int val)
1178 {
1179 int i;
1180
1181 for (i = 0; pairlist[i].name != NULL; i++)
1182 if (pairlist[i].val == val)
1183 return (&pairlist[i]);
1184 return (NULL);
1185 }
1186
1187 static void
print_ripso(const uchar_t * opt)1188 print_ripso(const uchar_t *opt)
1189 {
1190 struct snoop_pair *ripso_class;
1191 int i, index, prot_len;
1192 boolean_t first_prot;
1193 char line[100], *ptr;
1194
1195 prot_len = opt[1] - 3;
1196 if (prot_len < 0)
1197 return;
1198
1199 show_header("RIPSO: ", "Revised IP Security Option", 0);
1200 show_space();
1201
1202 (void) snprintf(get_line(0, 0), get_line_remain(),
1203 "Type = Basic Security Option (%d), Length = %d", opt[0], opt[1]);
1204
1205 /*
1206 * Display Classification Level
1207 */
1208 ripso_class = get_pair_byval(ripso_class_tbl, (int)opt[2]);
1209 if (ripso_class == NULL)
1210 (void) snprintf(get_line(0, 0), get_line_remain(),
1211 "Classification = Unknown (0x%02x)", opt[2]);
1212 else
1213 (void) snprintf(get_line(0, 0), get_line_remain(),
1214 "Classification = %s (0x%02x)",
1215 ripso_class->name, ripso_class->val);
1216
1217 /*
1218 * Display Protection Authority Flags
1219 */
1220 (void) snprintf(line, sizeof (line), "Protection Authority = ");
1221 ptr = line;
1222 first_prot = B_TRUE;
1223 for (i = 0; i < prot_len; i++) {
1224 index = 0;
1225 while (ripso_prot_tbl[index].name != NULL) {
1226 if (opt[3 + i] & ripso_prot_tbl[index].val) {
1227 ptr = strchr(ptr, 0);
1228 if (!first_prot) {
1229 (void) strlcpy(ptr, ", ",
1230 sizeof (line) - (ptr - line));
1231 ptr = strchr(ptr, 0);
1232 }
1233 (void) snprintf(ptr,
1234 sizeof (line) - (ptr - line),
1235 "%s (0x%02x)",
1236 ripso_prot_tbl[index].name,
1237 ripso_prot_tbl[index].val);
1238 }
1239 index++;
1240 }
1241 if ((opt[3 + i] & 1) == 0)
1242 break;
1243 }
1244 if (!first_prot)
1245 (void) snprintf(get_line(0, 0), get_line_remain(), "%s", line);
1246 else
1247 (void) snprintf(get_line(0, 0), get_line_remain(), "%sNone",
1248 line);
1249 }
1250
1251 #define CIPSO_GENERIC_ARRAY_LEN 200
1252
1253 /*
1254 * Return 1 if CIPSO SL and Categories are all 1's; 0 otherwise.
1255 *
1256 * Note: opt starts with "Tag Type":
1257 *
1258 * |tag_type(1)|tag_length(1)|align(1)|sl(1)|categories(variable)|
1259 *
1260 */
1261 static boolean_t
cipso_high(const uchar_t * opt)1262 cipso_high(const uchar_t *opt)
1263 {
1264 int i;
1265
1266 if (((int)opt[1] + 6) < IP_MAX_OPT_LENGTH)
1267 return (B_FALSE);
1268 for (i = 0; i < ((int)opt[1] - 3); i++)
1269 if (opt[3 + i] != 0xff)
1270 return (B_FALSE);
1271 return (B_TRUE);
1272 }
1273
1274 /*
1275 * Converts CIPSO label to SL.
1276 *
1277 * Note: opt starts with "Tag Type":
1278 *
1279 * |tag_type(1)|tag_length(1)|align(1)|sl(1)|categories(variable)|
1280 *
1281 */
1282 static void
cipso2sl(const uchar_t * opt,bslabel_t * sl,int * high)1283 cipso2sl(const uchar_t *opt, bslabel_t *sl, int *high)
1284 {
1285 int i, taglen;
1286 uchar_t *q = (uchar_t *)&((_bslabel_impl_t *)sl)->compartments;
1287
1288 *high = 0;
1289 taglen = opt[1];
1290 memset((caddr_t)sl, 0, sizeof (bslabel_t));
1291
1292 if (cipso_high(opt)) {
1293 BSLHIGH(sl);
1294 *high = 1;
1295 } else {
1296 LCLASS_SET((_bslabel_impl_t *)sl, opt[3]);
1297 for (i = 0; i < taglen - TSOL_TT1_MIN_LENGTH; i++)
1298 q[i] = opt[TSOL_TT1_MIN_LENGTH + i];
1299 }
1300 SETBLTYPE(sl, SUN_SL_ID);
1301 }
1302
1303 static int
interpret_cipso_tagtype1(const uchar_t * opt)1304 interpret_cipso_tagtype1(const uchar_t *opt)
1305 {
1306 int i, taglen, ishigh;
1307 bslabel_t sl;
1308 char line[CIPSO_GENERIC_ARRAY_LEN], *ptr;
1309
1310 taglen = opt[1];
1311 if (taglen < TSOL_TT1_MIN_LENGTH ||
1312 taglen > TSOL_TT1_MAX_LENGTH)
1313 return (taglen);
1314
1315 (void) snprintf(get_line(0, 0), get_line_remain(),
1316 "Tag Type = %d, Tag Length = %d", opt[0], opt[1]);
1317 (void) snprintf(get_line(0, 0), get_line_remain(),
1318 "Sensitivity Level = 0x%02x", opt[3]);
1319 ptr = line;
1320 for (i = 0; i < taglen - TSOL_TT1_MIN_LENGTH; i++) {
1321 (void) snprintf(ptr, sizeof (line) - (ptr - line), "%02x",
1322 opt[TSOL_TT1_MIN_LENGTH + i]);
1323 ptr = strchr(ptr, 0);
1324 }
1325 if (i != 0) {
1326 (void) snprintf(get_line(0, 0), get_line_remain(),
1327 "Categories = ");
1328 (void) snprintf(get_line(0, 0), get_line_remain(), "\t%s",
1329 line);
1330 } else {
1331 (void) snprintf(get_line(0, 0), get_line_remain(),
1332 "Categories = None");
1333 }
1334 cipso2sl(opt, &sl, &ishigh);
1335 if (is_system_labeled()) {
1336 if (bsltos(&sl, &plabel, ALABEL_MAXLEN,
1337 LONG_CLASSIFICATION|LONG_WORDS|VIEW_INTERNAL) < 0) {
1338 (void) snprintf(get_line(0, 0), get_line_remain(),
1339 "The Sensitivity Level and Categories can't be "
1340 "mapped to a valid SL");
1341 } else {
1342 (void) snprintf(get_line(0, 0), get_line_remain(),
1343 "The Sensitivity Level and Categories are mapped "
1344 "to the SL:");
1345 (void) snprintf(get_line(0, 0), get_line_remain(),
1346 "\t%s", ascii_label);
1347 }
1348 }
1349 return (taglen);
1350 }
1351
1352 /*
1353 * The following struct definition #define's are copied from TS1.x. They are
1354 * not used here (except TTYPE_3_MAX_TOKENS), but included as a reference for
1355 * the tag type 3 packet format.
1356 */
1357 #define TTYPE_3_MAX_TOKENS 7
1358
1359 /*
1360 * Display CIPSO tag type 3 which is defined by MAXSIX.
1361 */
1362 static int
interpret_cipso_tagtype3(const uchar_t * opt)1363 interpret_cipso_tagtype3(const uchar_t *opt)
1364 {
1365 uchar_t tagtype;
1366 int index, numtokens, taglen;
1367 uint16_t mask;
1368 uint32_t token;
1369 static const char *name[] = {
1370 "SL",
1371 "NCAV",
1372 "INTEG",
1373 "SID",
1374 "undefined",
1375 "undefined",
1376 "IL",
1377 "PRIVS",
1378 "LUID",
1379 "PID",
1380 "IDS",
1381 "ACL"
1382 };
1383
1384 tagtype = *opt++;
1385 (void) memcpy(&mask, opt + 3, sizeof (mask));
1386 (void) snprintf(get_line(0, 0), get_line_remain(),
1387 "Tag Type = %d (MAXSIX)", tagtype);
1388 (void) snprintf(get_line(0, 0), get_line_remain(),
1389 "Generation = 0x%02x%02x%02x, Mask = 0x%04x", opt[0], opt[1],
1390 opt[2], mask);
1391 opt += 3 + sizeof (mask);
1392
1393 /*
1394 * Display tokens
1395 */
1396 numtokens = 0;
1397 index = 0;
1398 while (mask != 0 && numtokens < TTYPE_3_MAX_TOKENS) {
1399 if (mask & 0x0001) {
1400 (void) memcpy(&token, opt, sizeof (token));
1401 opt += sizeof (token);
1402 (void) snprintf(get_line(0, 0), get_line_remain(),
1403 "Attribute = %s, Token = 0x%08x",
1404 index < sizeof (name) / sizeof (*name) ?
1405 name[index] : "unknown", token);
1406 numtokens++;
1407 }
1408 mask = mask >> 1;
1409 index++;
1410 }
1411
1412 taglen = 6 + numtokens * 4;
1413 return (taglen);
1414 }
1415
1416 static void
print_cipso(const uchar_t * opt)1417 print_cipso(const uchar_t *opt)
1418 {
1419 int optlen, taglen, tagnum;
1420 uint32_t doi;
1421 char line[CIPSO_GENERIC_ARRAY_LEN];
1422 char *oldnest;
1423
1424 optlen = opt[1];
1425 if (optlen < TSOL_CIPSO_MIN_LENGTH || optlen > TSOL_CIPSO_MAX_LENGTH)
1426 return;
1427
1428 oldnest = prot_nest_prefix;
1429 prot_nest_prefix = prot_prefix;
1430 show_header("CIPSO: ", "Common IP Security Option", 0);
1431 show_space();
1432
1433 /*
1434 * Display CIPSO Header
1435 */
1436 (void) snprintf(get_line(0, 0), get_line_remain(),
1437 "Type = CIPSO (%d), Length = %d", opt[0], opt[1]);
1438 (void) memcpy(&doi, opt + 2, sizeof (doi));
1439 (void) snprintf(get_line(0, 0), get_line_remain(),
1440 "Domain of Interpretation = %u", (unsigned)ntohl(doi));
1441
1442 if (opt[1] == TSOL_CIPSO_MIN_LENGTH) { /* no tags */
1443 show_space();
1444 prot_prefix = prot_nest_prefix;
1445 prot_nest_prefix = oldnest;
1446 return;
1447 }
1448 optlen -= TSOL_CIPSO_MIN_LENGTH;
1449 opt += TSOL_CIPSO_MIN_LENGTH;
1450
1451 /*
1452 * Display Each Tag
1453 */
1454 tagnum = 1;
1455 while (optlen >= TSOL_TT1_MIN_LENGTH) {
1456 (void) snprintf(line, sizeof (line), "Tag# %d", tagnum);
1457 show_header("CIPSO: ", line, 0);
1458 /*
1459 * We handle tag type 1 and 3 only. Note, tag type 3
1460 * is MAXSIX defined.
1461 */
1462 switch (opt[0]) {
1463 case 1:
1464 taglen = interpret_cipso_tagtype1(opt);
1465 break;
1466 case 3:
1467 taglen = interpret_cipso_tagtype3(opt);
1468 break;
1469 default:
1470 (void) snprintf(get_line(0, 0), get_line_remain(),
1471 "Unknown Tag Type %d", opt[0]);
1472 show_space();
1473 prot_prefix = prot_nest_prefix;
1474 prot_nest_prefix = oldnest;
1475 return;
1476 }
1477
1478 /*
1479 * Move to the next tag
1480 */
1481 if (taglen <= 0)
1482 break;
1483 optlen -= taglen;
1484 opt += taglen;
1485 tagnum++;
1486 }
1487 show_space();
1488 prot_prefix = prot_nest_prefix;
1489 prot_nest_prefix = oldnest;
1490 }
1491