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[tcpdump] / print-radius.c
1 /*
2 * Copyright (C) 2000 Alfredo Andres Omella. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 * 3. The names of the authors may not be used to endorse or promote
15 * products derived from this software without specific prior
16 * written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 */
22 /*
23 * Radius printer routines as specified on:
24 *
25 * RFC 2865:
26 * "Remote Authentication Dial In User Service (RADIUS)"
27 *
28 * RFC 2866:
29 * "RADIUS Accounting"
30 *
31 * RFC 2867:
32 * "RADIUS Accounting Modifications for Tunnel Protocol Support"
33 *
34 * RFC 2868:
35 * "RADIUS Attributes for Tunnel Protocol Support"
36 *
37 * RFC 2869:
38 * "RADIUS Extensions"
39 *
40 * Alfredo Andres Omella (aandres@s21sec.com) v0.1 2000/09/15
41 *
42 * TODO: Among other things to print ok MacIntosh and Vendor values
43 */
44
45 #ifndef lint
46 static const char rcsid[] =
47 "$Id: print-radius.c,v 1.10 2001-10-22 06:58:33 itojun Exp $";
48 #endif
49
50 #ifdef HAVE_CONFIG_H
51 #include "config.h"
52 #endif
53
54 #include <string.h>
55
56 #include <sys/param.h>
57
58 #include <netinet/in.h>
59
60 #include <stdio.h>
61
62 #include "interface.h"
63 #include "addrtoname.h"
64 #include "extract.h"
65
66 #define TAM_SIZE(x) (sizeof(x)/sizeof(x[0]) )
67
68 #define PRINT_HEX(bytes_len, ptr_data) \
69 while(bytes_len) \
70 { \
71 printf("%02X", *ptr_data ); \
72 ptr_data++; \
73 bytes_len--; \
74 }
75
76
77 /* Radius packet codes */
78 #define RADCMD_ACCESS_REQ 1 /* Access-Request */
79 #define RADCMD_ACCESS_ACC 2 /* Access-Accept */
80 #define RADCMD_ACCESS_REJ 3 /* Access-Reject */
81 #define RADCMD_ACCOUN_REQ 4 /* Accounting-Request */
82 #define RADCMD_ACCOUN_RES 5 /* Accounting-Response */
83 #define RADCMD_ACCESS_CHA 11 /* Access-Challenge */
84 #define RADCMD_STATUS_SER 12 /* Status-Server */
85 #define RADCMD_STATUS_CLI 13 /* Status-Client */
86 #define RADCMD_RESERVED 255 /* Reserved */
87
88
89 /********************************/
90 /* Begin Radius Attribute types */
91 /********************************/
92 #define SERV_TYPE 6
93 #define FRM_IPADDR 8
94 #define LOG_IPHOST 14
95 #define LOG_SERVICE 15
96 #define FRM_IPX 23
97 #define SESSION_TIMEOUT 27
98 #define IDLE_TIMEOUT 28
99 #define FRM_ATALK_LINK 37
100 #define FRM_ATALK_NETWORK 38
101
102 #define ACCT_DELAY 41
103 #define ACCT_SESSION_TIME 46
104
105 #define TUNNEL_TYPE 64
106 #define TUNNEL_MEDIUM 65
107 #define TUNNEL_CLIENT_END 66
108 #define TUNNEL_SERVER_END 67
109 #define TUNNEL_PASS 69
110
111 #define ARAP_PASS 70
112 #define ARAP_FEATURES 71
113
114 #define TUNNEL_PRIV_GROUP 81
115 #define TUNNEL_ASSIGN_ID 82
116 #define TUNNEL_PREFERENCE 83
117
118 #define ARAP_CHALLENGE_RESP 84
119 #define ACCT_INT_INTERVAL 85
120
121 #define TUNNEL_CLIENT_AUTH 90
122 #define TUNNEL_SERVER_AUTH 91
123 /********************************/
124 /* End Radius Attribute types */
125 /********************************/
126
127
128 static void print_attr_string(register u_char *, u_int, u_short );
129 static void print_attr_num(register u_char *, u_int, u_short );
130 static void print_attr_address(register u_char *, u_int, u_short);
131 static void print_attr_time(register u_char *, u_int, u_short);
132 static void print_attr_strange(register u_char *, u_int, u_short);
133
134
135 struct radius_hdr { u_int8_t code; /* Radius packet code */
136 u_int8_t id; /* Radius packet id */
137 u_int16_t len; /* Radius total length */
138 u_int8_t auth[16]; /* Authenticator */
139 };
140
141 #define MIN_RADIUS_LEN 20
142
143 struct radius_attr { u_int8_t type; /* Attribute type */
144 u_int8_t len; /* Attribute length */
145 };
146
147
148 /* Service-Type Attribute standard values */
149 static const char *serv_type[]={ NULL,
150 "Login",
151 "Framed",
152 "Callback Login",
153 "Callback Framed",
154 "Outbound",
155 "Administrative",
156 "NAS Prompt",
157 "Authenticate Only",
158 "Callback NAS Prompt",
159 "Call Check",
160 "Callback Administrative",
161 };
162
163 /* Framed-Protocol Attribute standard values */
164 static const char *frm_proto[]={ NULL,
165 "PPP",
166 "SLIP",
167 "ARAP",
168 "Gandalf proprietary",
169 "Xylogics IPX/SLIP",
170 "X.75 Synchronous",
171 };
172
173 /* Framed-Routing Attribute standard values */
174 static const char *frm_routing[]={ "None",
175 "Send",
176 "Listen",
177 "Send&Listen",
178 };
179
180 /* Framed-Compression Attribute standard values */
181 static const char *frm_comp[]={ "None",
182 "VJ TCP/IP",
183 "IPX",
184 "Stac-LZS",
185 };
186
187 /* Login-Service Attribute standard values */
188 static const char *login_serv[]={ "Telnet",
189 "Rlogin",
190 "TCP Clear",
191 "PortMaster(proprietary)",
192 "LAT",
193 "X.25-PAD",
194 "X.25-T3POS",
195 "Unassigned",
196 "TCP Clear Quiet",
197 };
198
199
200 /* Termination-Action Attribute standard values */
201 static const char *term_action[]={ "Default",
202 "RADIUS-Request",
203 };
204
205 /* NAS-Port-Type Attribute standard values */
206 static const char *nas_port_type[]={ "Async",
207 "Sync",
208 "ISDN Sync",
209 "ISDN Async V.120",
210 "ISDN Async V.110",
211 "Virtual",
212 "PIAFS",
213 "HDLC Clear Channel",
214 "X.25",
215 "X.75",
216 "G.3 Fax",
217 "SDSL",
218 "ADSL-CAP",
219 "ADSL-DMT",
220 "ISDN-DSL",
221 "Ethernet",
222 "xDSL",
223 "Cable",
224 "Wireless - Other",
225 "Wireless - IEEE 802.11",
226 };
227
228 /* Acct-Status-Type Accounting Attribute standard values */
229 static const char *acct_status[]={ NULL,
230 "Start",
231 "Stop",
232 "Interim-Update",
233 "Unassigned",
234 "Unassigned",
235 "Unassigned",
236 "Accounting-On",
237 "Accounting-Off",
238 "Tunnel-Start",
239 "Tunnel-Stop",
240 "Tunnel-Reject",
241 "Tunnel-Link-Start",
242 "Tunnel-Link-Stop",
243 "Tunnel-Link-Reject",
244 "Failed",
245 };
246
247 /* Acct-Authentic Accounting Attribute standard values */
248 static const char *acct_auth[]={ NULL,
249 "RADIUS",
250 "Local",
251 "Remote",
252 };
253
254 /* Acct-Terminate-Cause Accounting Attribute standard values */
255 static const char *acct_term[]={ NULL,
256 "User Request",
257 "Lost Carrier",
258 "Lost Service",
259 "Idle Timeout",
260 "Session Timeout",
261 "Admin Reset",
262 "Admin Reboot",
263 "Port Error",
264 "NAS Error",
265 "NAS Request",
266 "NAS Reboot",
267 "Port Unneeded",
268 "Port Preempted",
269 "Port Suspended",
270 "Service Unavailable",
271 "Callback",
272 "User Error",
273 "Host Request",
274 };
275
276 /* Tunnel-Type Attribute standard values */
277 static const char *tunnel_type[]={ NULL,
278 "PPTP",
279 "L2F",
280 "L2TP",
281 "ATMP",
282 "VTP",
283 "AH",
284 "IP-IP",
285 "MIN-IP-IP",
286 "ESP",
287 "GRE",
288 "DVS",
289 "IP-in-IP Tunneling",
290 };
291
292 /* Tunnel-Medium-Type Attribute standard values */
293 static const char *tunnel_medium[]={ NULL,
294 "IPv4",
295 "IPv6",
296 "NSAP",
297 "HDLC",
298 "BBN 1822",
299 "802",
300 "E.163",
301 "E.164",
302 "F.69",
303 "X.121",
304 "IPX",
305 "Appletalk",
306 "Decnet IV",
307 "Banyan Vines",
308 "E.164 with NSAP subaddress",
309 };
310
311 /* ARAP-Zone-Access Attribute standard values */
312 static const char *arap_zone[]={ NULL,
313 "Only access to dfl zone",
314 "Use zone filter inc.",
315 "Not used",
316 "Use zone filter exc.",
317 };
318
319 static const char *prompt[]={ "No Echo",
320 "Echo",
321 };
322
323
324 struct attrtype { char *name; /* Attribute name */
325 const char **subtypes; /* Standard Values (if any) */
326 u_char siz_subtypes; /* Size of total standard values */
327 u_char first_subtype; /* First standard value is 0 or 1 */
328 void (*print_func)(register u_char *, u_int, u_short );
329 } attr_type[]=
330 {
331 { NULL, NULL, 0, 0, NULL },
332 { "User", NULL, 0, 0, print_attr_string },
333 { "Pass", NULL, 0, 0, NULL },
334 { "CHAP-Pass", NULL, 0, 0, NULL },
335 { "NAS_ipaddr", NULL, 0, 0, print_attr_address },
336 { "NAS_port", NULL, 0, 0, print_attr_num },
337 { "Service_type", serv_type, TAM_SIZE(serv_type)-1, 1, print_attr_num },
338 { "Framed_proto", frm_proto, TAM_SIZE(frm_proto)-1, 1, print_attr_num },
339 { "Framed_ipaddr", NULL, 0, 0, print_attr_address },
340 { "Framed_ipnet", NULL, 0, 0, print_attr_address },
341 { "Framed_routing", frm_routing, TAM_SIZE(frm_routing), 0,
342 print_attr_num },
343 { "Filter_id", NULL, 0, 0, print_attr_string },
344 { "Framed_mtu", NULL, 0, 0, print_attr_num },
345 { "Framed_compress", frm_comp, TAM_SIZE(frm_comp), 0, print_attr_num },
346 { "Login_iphost", NULL, 0, 0, print_attr_address },
347 { "Login_service", login_serv, TAM_SIZE(login_serv), 0, print_attr_num },
348 { "Login_TCP_port", NULL, 0, 0, print_attr_num },
349 /*17*/ { "Unassigned", NULL, 0, 0, NULL },
350 { "Reply", NULL, 0, 0, print_attr_string },
351 { "Callback-number", NULL, 0, 0, print_attr_string },
352 { "Callback-id", NULL, 0, 0, print_attr_string },
353 /*21*/ { "Unassigned", NULL, 0, 0, NULL },
354 { "Framed_route", NULL, 0, 0, print_attr_string },
355 { "Framed_ipx_net", NULL, 0, 0, print_attr_num },
356 { "State", NULL, 0, 0, print_attr_string },
357 { "Class", NULL, 0, 0, print_attr_string },
358 { "Vendor_specific", NULL, 0, 0, print_attr_string },
359 { "Session_timeout", NULL, 0, 0, print_attr_num },
360 { "Idle_timeout", NULL, 0, 0, print_attr_num },
361 { "Term_action", term_action, TAM_SIZE(term_action), 0, print_attr_num },
362 { "Called_station", NULL, 0, 0, print_attr_string },
363 { "Calling_station", NULL, 0, 0, print_attr_string },
364 { "NAS_id", NULL, 0, 0, print_attr_string },
365 { "Proxy_state", NULL, 0, 0, print_attr_string },
366 { "Login_LAT_service", NULL, 0, 0, print_attr_string },
367 { "Login_LAT_node", NULL, 0, 0, print_attr_string },
368 { "Login_LAT_group", NULL, 0, 0, print_attr_string },
369 { "Framed_atalk_link", NULL, 0, 0, print_attr_num },
370 { "Framed_atalk_net", NULL, 0, 0, print_attr_num },
371 { "Framed_atalk_zone", NULL, 0, 0, print_attr_string },
372 { "Acct_status", acct_status, TAM_SIZE(acct_status)-1, 1, print_attr_num },
373 { "Acct_delay", NULL, 0, 0, print_attr_num },
374 { "Acct_in_octets", NULL, 0, 0, print_attr_num },
375 { "Acct_out_octets", NULL, 0, 0, print_attr_num },
376 { "Acct_session_id", NULL, 0, 0, print_attr_string },
377 { "Acct_authentic", acct_auth, TAM_SIZE(acct_auth)-1, 1, print_attr_num },
378 { "Acct_session_time", NULL, 0, 0, print_attr_num },
379 { "Acct_in_packets", NULL, 0, 0, print_attr_num },
380 { "Acct_out_packets", NULL, 0, 0, print_attr_num },
381 { "Acct_term_cause", acct_term, TAM_SIZE(acct_term)-1, 1, print_attr_num },
382 { "Acct_multi_session_id", NULL, 0, 0, print_attr_string },
383 { "Acct_link_count", NULL, 0, 0, print_attr_num },
384 { "Acct_in_giga", NULL, 0, 0, print_attr_num },
385 { "Acct_out_giga", NULL, 0, 0, print_attr_num },
386 /*54*/ { "Unassigned", NULL, 0, 0, NULL },
387 { "Event_timestamp", NULL, 0, 0, print_attr_time },
388 /*56*/ { "Unassigned", NULL, 0, 0, NULL },
389 /*57*/ { "Unassigned", NULL, 0, 0, NULL },
390 /*58*/ { "Unassigned", NULL, 0, 0, NULL },
391 /*59*/ { "Unassigned", NULL, 0, 0, NULL },
392 { "CHAP_challenge", NULL, 0, 0, print_attr_string },
393 { "NAS_port_type", nas_port_type, TAM_SIZE(nas_port_type), 0,
394 print_attr_num },
395 { "Port_limit", NULL, 0, 0, print_attr_num },
396 /*63*/ { "Login_LAT_port", NULL, 0, 0, print_attr_string },
397 { "Tunnel_type", tunnel_type, TAM_SIZE(tunnel_type)-1, 1, print_attr_num },
398 { "Tunnel_medium", tunnel_medium, TAM_SIZE(tunnel_medium)-1, 1,
399 print_attr_num },
400 { "Tunnel_client_end", NULL, 0, 0, print_attr_string },
401 { "Tunnel_server_end", NULL, 0, 0, print_attr_string },
402 { "Acct_tunnel_connect", NULL, 0, 0, print_attr_string },
403 { "Tunnel_pass", NULL, 0, 0, print_attr_string },
404 { "ARAP_pass", NULL, 0, 0, print_attr_strange },
405 { "ARAP_feature", NULL, 0, 0, print_attr_strange },
406 /*72*/ { "ARAP_zone_acces", arap_zone, TAM_SIZE(arap_zone)-1, 1,
407 print_attr_num },
408 { "ARAP_security", NULL, 0, 0, print_attr_string },
409 { "ARAP_security_data", NULL, 0, 0, print_attr_string },
410 { "Password_retry", NULL, 0, 0, print_attr_num },
411 { "Prompt", prompt, TAM_SIZE(prompt), 0, print_attr_num },
412 { "Connect_info", NULL, 0, 0, print_attr_string },
413 { "Config_token", NULL, 0, 0, print_attr_string },
414 { "EAP_msg", NULL, 0, 0, print_attr_string },
415 /*80*/ { "Message_auth", NULL, 0, 0, print_attr_string },
416 { "Tunnel_priv_group", NULL, 0, 0, print_attr_string },
417 { "Tunnel_assign_id", NULL, 0, 0, print_attr_string },
418 { "Tunnel_pref", NULL, 0, 0, print_attr_num },
419 { "ARAP_challenge_resp", NULL, 0, 0, print_attr_strange },
420 { "Acct_interim_interval", NULL, 0, 0, print_attr_num },
421 /*86*/ { "Acct_tunnel_pack_lost", NULL, 0, 0, print_attr_num },
422 { "NAS_port_id", NULL, 0, 0, print_attr_string },
423 { "Framed_pool", NULL, 0, 0, print_attr_string },
424 { "Unassigned", NULL, 0, 0, NULL },
425 { "Tunnel_client_auth_id", NULL, 0, 0, print_attr_string },
426 { "Tunnel_server_auth_id", NULL, 0, 0, print_attr_string },
427 /*92*/ { "Unassigned", NULL, 0, 0, NULL },
428 /*93*/ { "Unassigned", NULL, 0, 0, NULL }
429 };
430
431
432 /*****************************/
433 /* Print an attribute string */
434 /* value pointed by 'data' */
435 /* and 'length' size. */
436 /*****************************/
437 /* Returns nothing. */
438 /*****************************/
439 static void
440 print_attr_string(register u_char *data, u_int length, u_short attr_code )
441 {
442 register u_int i;
443
444 TCHECK2(data[0],length);
445
446 printf("{");
447 switch(attr_code)
448 {
449 case TUNNEL_PASS:
450 if (*data && (*data <=0x1F) )
451 printf("Tag[%d] ",*data);
452 data++;
453 printf("Salt[%d] ",EXTRACT_16BITS(data) );
454 data+=2;
455 length-=2;
456 break;
457 case TUNNEL_CLIENT_END:
458 case TUNNEL_SERVER_END:
459 case TUNNEL_PRIV_GROUP:
460 case TUNNEL_ASSIGN_ID:
461 case TUNNEL_CLIENT_AUTH:
462 case TUNNEL_SERVER_AUTH:
463 if (*data <= 0x1F)
464 {
465 printf("Tag[%d] ",*data);
466 data++;
467 length--;
468 }
469 break;
470 }
471
472 for (i=0; i < length ; i++, data++)
473 printf("%c",(*data < 32 || *data > 128) ? '.' : *data );
474
475 printf("}");
476
477 return;
478
479 trunc:
480 printf("|radius");
481 }
482
483
484 /******************************/
485 /* Print an attribute numeric */
486 /* value pointed by 'data' */
487 /* and 'length' size. */
488 /******************************/
489 /* Returns nothing. */
490 /******************************/
491 static void
492 print_attr_num(register u_char *data, u_int length, u_short attr_code )
493 {
494 u_int8_t tag;
495 u_int32_t timeout;
496
497 if (length != 4)
498 {
499 printf("{length %u != 4}", length);
500 return;
501 }
502
503 TCHECK2(data[0],4);
504 /* This attribute has standard values */
505 if (attr_type[attr_code].siz_subtypes)
506 {
507 static const char **table;
508 u_int32_t data_value;
509 table = attr_type[attr_code].subtypes;
510
511 if ( (attr_code == TUNNEL_TYPE) || (attr_code == TUNNEL_MEDIUM) )
512 {
513 if (!*data)
514 printf("{Tag[Unused]");
515 else
516 printf("{Tag[%d]", *data);
517 data++;
518 data_value = EXTRACT_24BITS(data);
519 }
520 else
521 {
522 data_value = EXTRACT_32BITS(data);
523 }
524 if ( data_value <= (attr_type[attr_code].siz_subtypes - 1 +
525 attr_type[attr_code].first_subtype) )
526 printf("{%s}",table[data_value]);
527 else
528 printf("{#%d}",data_value);
529 }
530 else
531 {
532 switch(attr_code) /* Be aware of special cases... */
533 {
534 case FRM_IPX:
535 if (EXTRACT_32BITS( data) == 0xFFFFFFFE )
536 printf("{NAS_select}");
537 else
538 printf("{%d}",EXTRACT_32BITS( data) );
539 break;
540
541 case SESSION_TIMEOUT:
542 case IDLE_TIMEOUT:
543 case ACCT_DELAY:
544 case ACCT_SESSION_TIME:
545 case ACCT_INT_INTERVAL:
546 timeout = EXTRACT_32BITS( data);
547 if ( timeout < 60 )
548 printf( "{%02d secs}", timeout);
549 else
550 {
551 if ( timeout < 3600 )
552 printf( "{%02d:%02d min}",
553 timeout / 60, timeout % 60);
554 else
555 printf( "{%02d:%02d:%02d hours}",
556 timeout / 3600, (timeout % 3600) / 60,
557 timeout % 60);
558 }
559 break;
560
561 case FRM_ATALK_LINK:
562 if (EXTRACT_32BITS(data) )
563 printf("{%d}",EXTRACT_32BITS(data) );
564 else
565 printf("{Unnumbered}" );
566 break;
567
568 case FRM_ATALK_NETWORK:
569 if (EXTRACT_32BITS(data) )
570 printf("{%d}",EXTRACT_32BITS(data) );
571 else
572 printf("{NAS_assign}" );
573 break;
574
575 case TUNNEL_PREFERENCE:
576 tag = *data;
577 data++;
578 if (tag == 0)
579 printf("{Tag[Unused] %d}",EXTRACT_24BITS(data) );
580 else
581 printf("{Tag[%d] %d}", tag, EXTRACT_24BITS(data) );
582 break;
583
584 default:
585 printf("{%d}",EXTRACT_32BITS( data) );
586 break;
587
588 } /* switch */
589
590 } /* if-else */
591
592 return;
593
594 trunc:
595 printf("|radius}");
596 }
597
598
599 /*****************************/
600 /* Print an attribute IPv4 */
601 /* address value pointed by */
602 /* 'data' and 'length' size. */
603 /*****************************/
604 /* Returns nothing. */
605 /*****************************/
606 static void
607 print_attr_address(register u_char *data, u_int length, u_short attr_code )
608 {
609 if (length != 4)
610 {
611 printf("{length %u != 4}", length);
612 return;
613 }
614
615 TCHECK2(data[0],4);
616
617 switch(attr_code)
618 {
619 case FRM_IPADDR:
620 case LOG_IPHOST:
621 if (EXTRACT_32BITS(data) == 0xFFFFFFFF )
622 printf("{User_select}");
623 else
624 if (EXTRACT_32BITS(data) == 0xFFFFFFFE )
625 printf("{NAS_select}");
626 else
627 printf("{%s}",ipaddr_string(data));
628 break;
629
630 default:
631 printf("{%s}",ipaddr_string(data) );
632 break;
633 }
634
635 return;
636
637 trunc:
638 printf("{|radius}");
639 }
640
641
642 /*************************************/
643 /* Print an attribute of 'secs since */
644 /* January 1, 1970 00:00 UTC' value */
645 /* pointed by 'data' and 'length' */
646 /* size. */
647 /*************************************/
648 /* Returns nothing. */
649 /*************************************/
650 static void print_attr_time(register u_char *data, u_int length, u_short attr_code)
651 {
652 time_t attr_time;
653 char string[26];
654
655 if (length != 4)
656 {
657 printf("{length %u != 4}", length);
658 return;
659 }
660
661 TCHECK2(data[0],4);
662
663 attr_time = EXTRACT_32BITS(data);
664 strlcpy(string, ctime(&attr_time), sizeof(string));
665 /* Get rid of the newline */
666 string[24] = '\0';
667 printf("{%.24s}", string);
668 return;
669
670 trunc:
671 printf("{|radius}");
672 }
673
674
675 /***********************************/
676 /* Print an attribute of 'strange' */
677 /* data format pointed by 'data' */
678 /* and 'length' size. */
679 /***********************************/
680 /* Returns nothing. */
681 /***********************************/
682 static void print_attr_strange(register u_char *data, u_int length, u_short attr_code)
683 {
684 u_short len_data;
685
686 switch(attr_code)
687 {
688 case ARAP_PASS:
689 if (length != 16)
690 {
691 printf("{length %u != 16}", length);
692 return;
693 }
694 printf("{User_challenge[");
695 TCHECK2(data[0],8);
696 len_data = 8;
697 PRINT_HEX(len_data, data);
698 printf("] User_resp[");
699 TCHECK2(data[0],8);
700 len_data = 8;
701 PRINT_HEX(len_data, data);
702 printf("]}");
703 break;
704
705 case ARAP_FEATURES:
706 if (length != 14)
707 {
708 printf("{length %u != 14}", length);
709 return;
710 }
711 TCHECK2(data[0],1);
712 if (*data)
713 printf("{User_can_change_pass");
714 else
715 printf("{User_cant_change_pass");
716 data++;
717 TCHECK2(data[0],1);
718 printf(" Min_pass_len[%d]",*data);
719 data++;
720 printf(" Pass_created_at[");
721 TCHECK2(data[0],4);
722 len_data = 4;
723 PRINT_HEX(len_data, data);
724 printf("] Pass_expired_in[");
725 TCHECK2(data[0],4);
726 len_data = 4;
727 PRINT_HEX(len_data, data);
728 printf("] Current_time[");
729 len_data = 4;
730 TCHECK2(data[0],4);
731 PRINT_HEX(len_data, data);
732 printf("]}");
733 break;
734
735 case ARAP_CHALLENGE_RESP:
736 if (length < 8)
737 {
738 printf("{length %u != 8}", length);
739 return;
740 }
741 printf("{");
742 TCHECK2(data[0],8);
743 len_data = 8;
744 PRINT_HEX(len_data, data);
745 printf("}");
746 break;
747 }
748
749 trunc:
750 printf("|radius}");
751 }
752
753
754
755 static void
756 radius_attr_print(register const u_char *attr, u_int length)
757 {
758 register const struct radius_attr *rad_attr = (struct radius_attr *)attr;
759
760 if (length < 3)
761 {
762 printf(" [|radius]");
763 return;
764 }
765
766 printf(" Attr[ ");
767 while (length > 0)
768 {
769 if (rad_attr->len == 0)
770 {
771 printf("(zero-length attribute)");
772 return;
773 }
774 if ( rad_attr->len <= length )
775 {
776 if ( !rad_attr->type || (rad_attr->type > (TAM_SIZE(attr_type)-1)) )
777 printf("#%d",rad_attr->type);
778 else
779 {
780 printf(" %s",attr_type[rad_attr->type].name);
781
782 if (rad_attr->len > 2)
783 {
784 if ( attr_type[rad_attr->type].print_func )
785 (*attr_type[rad_attr->type].print_func)(
786 ((u_char *)(rad_attr+1)),
787 rad_attr->len - 2, rad_attr->type);
788 }
789 }
790 }
791 else
792 {
793 printf(" [|radius]");
794 return;
795 }
796 length-=(rad_attr->len);
797 rad_attr = (struct radius_attr *)( ((char *)(rad_attr))+rad_attr->len);
798 }
799
800 printf(" ]");
801 }
802
803
804 void
805 radius_print(const u_char *dat, u_int length)
806 {
807 register const struct radius_hdr *rad;
808 register int i;
809 int len;
810
811 i = min(length, snapend - dat);
812
813 if (i < MIN_RADIUS_LEN)
814 {
815 printf(" [|radius]");
816 return;
817 }
818
819 rad = (struct radius_hdr *)dat;
820 len = ntohs(rad->len);
821
822 if (len < MIN_RADIUS_LEN)
823 {
824 printf(" [|radius]");
825 return;
826 }
827
828 if (len < i)
829 i = len;
830
831 i -= MIN_RADIUS_LEN;
832
833 switch (rad->code)
834 {
835 case RADCMD_ACCESS_REQ:
836 printf(" rad-access-req %d", length);
837 break;
838
839 case RADCMD_ACCESS_ACC:
840 printf(" rad-access-accept %d", length);
841 break;
842
843 case RADCMD_ACCESS_REJ:
844 printf(" rad-access-reject %d", length);
845 break;
846
847 case RADCMD_ACCOUN_REQ:
848 printf(" rad-account-req %d", length);
849 break;
850
851 case RADCMD_ACCOUN_RES:
852 printf(" rad-account-resp %d", length);
853 break;
854
855 case RADCMD_ACCESS_CHA:
856 printf(" rad-access-cha %d", length);
857 break;
858
859 case RADCMD_STATUS_SER:
860 printf(" rad-status-serv %d", length);
861 break;
862
863 case RADCMD_STATUS_CLI:
864 printf(" rad-status-cli %d", length);
865 break;
866
867 case RADCMD_RESERVED:
868 printf(" rad-reserved %d", length);
869 break;
870
871 default:
872 printf(" rad-#%d %d", rad->code, length);
873 break;
874 }
875 printf(" [id %d]", rad->id);
876
877 if (i)
878 radius_attr_print( dat + MIN_RADIUS_LEN, i);
879 }
[mirror] the TCPdump network dissector