1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
|
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Support for splitting captures into multiple files with a maximum
* file size:
*
* Copyright (c) 2001
* Seth Webster <swebster@sst.ll.mit.edu>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <netdissect-stdinc.h>
#include "netdissect.h"
#include "addrtoname.h"
#include "print.h"
struct printer {
if_printer f;
int type;
};
static const struct printer printers[] = {
{ ether_if_print, DLT_EN10MB },
#ifdef DLT_IPNET
{ ipnet_if_print, DLT_IPNET },
#endif
#ifdef DLT_IEEE802_15_4
{ ieee802_15_4_if_print, DLT_IEEE802_15_4 },
#endif
#ifdef DLT_IEEE802_15_4_NOFCS
{ ieee802_15_4_if_print, DLT_IEEE802_15_4_NOFCS },
#endif
#ifdef DLT_PPI
{ ppi_if_print, DLT_PPI },
#endif
#ifdef DLT_NETANALYZER
{ netanalyzer_if_print, DLT_NETANALYZER },
#endif
#ifdef DLT_NETANALYZER_TRANSPARENT
{ netanalyzer_transparent_if_print, DLT_NETANALYZER_TRANSPARENT },
#endif
#if defined(DLT_NFLOG) && defined(HAVE_PCAP_NFLOG_H)
{ nflog_if_print, DLT_NFLOG},
#endif
#ifdef DLT_CIP
{ cip_if_print, DLT_CIP },
#endif
#ifdef DLT_ATM_CLIP
{ cip_if_print, DLT_ATM_CLIP },
#endif
#ifdef DLT_IP_OVER_FC
{ ipfc_if_print, DLT_IP_OVER_FC },
#endif
{ null_if_print, DLT_NULL },
#ifdef DLT_LOOP
{ null_if_print, DLT_LOOP },
#endif
#ifdef DLT_APPLE_IP_OVER_IEEE1394
{ ap1394_if_print, DLT_APPLE_IP_OVER_IEEE1394 },
#endif
#if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
{ bt_if_print, DLT_BLUETOOTH_HCI_H4_WITH_PHDR},
#endif
#ifdef DLT_LANE8023
{ lane_if_print, DLT_LANE8023 },
#endif
{ arcnet_if_print, DLT_ARCNET },
#ifdef DLT_ARCNET_LINUX
{ arcnet_linux_if_print, DLT_ARCNET_LINUX },
#endif
{ raw_if_print, DLT_RAW },
#ifdef DLT_IPV4
{ raw_if_print, DLT_IPV4 },
#endif
#ifdef DLT_IPV6
{ raw_if_print, DLT_IPV6 },
#endif
#ifdef HAVE_PCAP_USB_H
#ifdef DLT_USB_LINUX
{ usb_linux_48_byte_print, DLT_USB_LINUX},
#endif /* DLT_USB_LINUX */
#ifdef DLT_USB_LINUX_MMAPPED
{ usb_linux_64_byte_print, DLT_USB_LINUX_MMAPPED},
#endif /* DLT_USB_LINUX_MMAPPED */
#endif /* HAVE_PCAP_USB_H */
#ifdef DLT_SYMANTEC_FIREWALL
{ symantec_if_print, DLT_SYMANTEC_FIREWALL },
#endif
#ifdef DLT_C_HDLC
{ chdlc_if_print, DLT_C_HDLC },
#endif
#ifdef DLT_HDLC
{ chdlc_if_print, DLT_HDLC },
#endif
#ifdef DLT_PPP_ETHER
{ pppoe_if_print, DLT_PPP_ETHER },
#endif
#if defined(DLT_PFLOG) && defined(HAVE_NET_IF_PFLOG_H)
{ pflog_if_print, DLT_PFLOG },
#endif
{ token_if_print, DLT_IEEE802 },
{ fddi_if_print, DLT_FDDI },
#ifdef DLT_LINUX_SLL
{ sll_if_print, DLT_LINUX_SLL },
#endif
#ifdef DLT_FR
{ fr_if_print, DLT_FR },
#endif
#ifdef DLT_FRELAY
{ fr_if_print, DLT_FRELAY },
#endif
#ifdef DLT_MFR
{ mfr_if_print, DLT_MFR },
#endif
{ atm_if_print, DLT_ATM_RFC1483 },
#ifdef DLT_SUNATM
{ sunatm_if_print, DLT_SUNATM },
#endif
#ifdef DLT_ENC
{ enc_if_print, DLT_ENC },
#endif
{ sl_if_print, DLT_SLIP },
#ifdef DLT_SLIP_BSDOS
{ sl_bsdos_if_print, DLT_SLIP_BSDOS },
#endif
#ifdef DLT_LTALK
{ ltalk_if_print, DLT_LTALK },
#endif
#ifdef DLT_JUNIPER_ATM1
{ juniper_atm1_print, DLT_JUNIPER_ATM1 },
#endif
#ifdef DLT_JUNIPER_ATM2
{ juniper_atm2_print, DLT_JUNIPER_ATM2 },
#endif
#ifdef DLT_JUNIPER_MFR
{ juniper_mfr_print, DLT_JUNIPER_MFR },
#endif
#ifdef DLT_JUNIPER_MLFR
{ juniper_mlfr_print, DLT_JUNIPER_MLFR },
#endif
#ifdef DLT_JUNIPER_MLPPP
{ juniper_mlppp_print, DLT_JUNIPER_MLPPP },
#endif
#ifdef DLT_JUNIPER_PPPOE
{ juniper_pppoe_print, DLT_JUNIPER_PPPOE },
#endif
#ifdef DLT_JUNIPER_PPPOE_ATM
{ juniper_pppoe_atm_print, DLT_JUNIPER_PPPOE_ATM },
#endif
#ifdef DLT_JUNIPER_GGSN
{ juniper_ggsn_print, DLT_JUNIPER_GGSN },
#endif
#ifdef DLT_JUNIPER_ES
{ juniper_es_print, DLT_JUNIPER_ES },
#endif
#ifdef DLT_JUNIPER_MONITOR
{ juniper_monitor_print, DLT_JUNIPER_MONITOR },
#endif
#ifdef DLT_JUNIPER_SERVICES
{ juniper_services_print, DLT_JUNIPER_SERVICES },
#endif
#ifdef DLT_JUNIPER_ETHER
{ juniper_ether_print, DLT_JUNIPER_ETHER },
#endif
#ifdef DLT_JUNIPER_PPP
{ juniper_ppp_print, DLT_JUNIPER_PPP },
#endif
#ifdef DLT_JUNIPER_FRELAY
{ juniper_frelay_print, DLT_JUNIPER_FRELAY },
#endif
#ifdef DLT_JUNIPER_CHDLC
{ juniper_chdlc_print, DLT_JUNIPER_CHDLC },
#endif
#ifdef DLT_PKTAP
{ pktap_if_print, DLT_PKTAP },
#endif
#ifdef DLT_IEEE802_11_RADIO
{ ieee802_11_radio_if_print, DLT_IEEE802_11_RADIO },
#endif
#ifdef DLT_IEEE802_11
{ ieee802_11_if_print, DLT_IEEE802_11},
#endif
#ifdef DLT_IEEE802_11_RADIO_AVS
{ ieee802_11_radio_avs_if_print, DLT_IEEE802_11_RADIO_AVS },
#endif
#ifdef DLT_PRISM_HEADER
{ prism_if_print, DLT_PRISM_HEADER },
#endif
{ ppp_if_print, DLT_PPP },
#ifdef DLT_PPP_WITHDIRECTION
{ ppp_if_print, DLT_PPP_WITHDIRECTION },
#endif
#ifdef DLT_PPP_BSDOS
{ ppp_bsdos_if_print, DLT_PPP_BSDOS },
#endif
#ifdef DLT_PPP_SERIAL
{ ppp_hdlc_if_print, DLT_PPP_SERIAL },
#endif
{ NULL, 0 },
};
static void ndo_default_print(netdissect_options *ndo, const u_char *bp,
u_int length);
static void ndo_error(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
NORETURN PRINTFLIKE(2, 3);
static void ndo_warning(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
PRINTFLIKE(2, 3);
static int ndo_printf(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
PRINTFLIKE(2, 3);
void
init_print(netdissect_options *ndo, uint32_t localnet, uint32_t mask,
uint32_t timezone_offset)
{
thiszone = timezone_offset;
init_addrtoname(ndo, localnet, mask);
init_checksum();
}
if_printer
lookup_printer(int type)
{
const struct printer *p;
for (p = printers; p->f; ++p)
if (type == p->type)
return p->f;
#if defined(DLT_USER2) && defined(DLT_PKTAP)
/*
* Apple incorrectly chose to use DLT_USER2 for their PKTAP
* header.
*
* We map DLT_PKTAP, whether it's DLT_USER2 as it is on Darwin-
* based OSes or the same value as LINKTYPE_PKTAP as it is on
* other OSes, to LINKTYPE_PKTAP, so files written with
* this version of libpcap for a DLT_PKTAP capture have a link-
* layer header type of LINKTYPE_PKTAP.
*
* However, files written on OS X Mavericks for a DLT_PKTAP
* capture have a link-layer header type of LINKTYPE_USER2.
* If we don't have a printer for DLT_USER2, and type is
* DLT_USER2, we look up the printer for DLT_PKTAP and use
* that.
*/
if (type == DLT_USER2) {
for (p = printers; p->f; ++p)
if (DLT_PKTAP == p->type)
return p->f;
}
#endif
return NULL;
/* NOTREACHED */
}
int
has_printer(int type)
{
return (lookup_printer(type) != NULL);
}
if_printer
get_if_printer(netdissect_options *ndo, int type)
{
const char *dltname;
if_printer printer;
printer = lookup_printer(type);
if (printer == NULL) {
dltname = pcap_datalink_val_to_name(type);
if (dltname != NULL)
(*ndo->ndo_error)(ndo,
"packet printing is not supported for link type %s: use -w",
dltname);
else
(*ndo->ndo_error)(ndo,
"packet printing is not supported for link type %d: use -w", type);
}
return printer;
}
void
pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h,
const u_char *sp, u_int packets_captured)
{
u_int hdrlen;
if(ndo->ndo_packet_number)
ND_PRINT((ndo, "%5u ", packets_captured));
ts_print(ndo, &h->ts);
/*
* Some printers want to check that they're not walking off the
* end of the packet.
* Rather than pass it all the way down, we set this member
* of the netdissect_options structure.
*/
ndo->ndo_snapend = sp + h->caplen;
hdrlen = (ndo->ndo_if_printer)(ndo, h, sp);
/*
* Restore the original snapend, as a printer might have
* changed it.
*/
ndo->ndo_snapend = sp + h->caplen;
if (ndo->ndo_Xflag) {
/*
* Print the raw packet data in hex and ASCII.
*/
if (ndo->ndo_Xflag > 1) {
/*
* Include the link-layer header.
*/
hex_and_ascii_print(ndo, "\n\t", sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
hex_and_ascii_print(ndo, "\n\t", sp + hdrlen,
h->caplen - hdrlen);
}
} else if (ndo->ndo_xflag) {
/*
* Print the raw packet data in hex.
*/
if (ndo->ndo_xflag > 1) {
/*
* Include the link-layer header.
*/
hex_print(ndo, "\n\t", sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
hex_print(ndo, "\n\t", sp + hdrlen,
h->caplen - hdrlen);
}
} else if (ndo->ndo_Aflag) {
/*
* Print the raw packet data in ASCII.
*/
if (ndo->ndo_Aflag > 1) {
/*
* Include the link-layer header.
*/
ascii_print(ndo, sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
ascii_print(ndo, sp + hdrlen, h->caplen - hdrlen);
}
}
ND_PRINT((ndo, "\n"));
}
/*
* By default, print the specified data out in hex and ASCII.
*/
static void
ndo_default_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
hex_and_ascii_print(ndo, "\n\t", bp, length); /* pass on lf and indentation string */
}
/* VARARGS */
static void
ndo_error(netdissect_options *ndo, const char *fmt, ...)
{
va_list ap;
if(ndo->program_name)
(void)fprintf(stderr, "%s: ", ndo->program_name);
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
if (*fmt) {
fmt += strlen(fmt);
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
nd_cleanup();
exit(1);
/* NOTREACHED */
}
/* VARARGS */
static void
ndo_warning(netdissect_options *ndo, const char *fmt, ...)
{
va_list ap;
if(ndo->program_name)
(void)fprintf(stderr, "%s: ", ndo->program_name);
(void)fprintf(stderr, "WARNING: ");
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
if (*fmt) {
fmt += strlen(fmt);
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
}
static int
ndo_printf(netdissect_options *ndo, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = vfprintf(stdout, fmt, args);
va_end(args);
if (ret < 0)
ndo_error(ndo, "Unable to write output: %s", pcap_strerror(errno));
return (ret);
}
void
ndo_set_function_pointers(netdissect_options *ndo)
{
ndo->ndo_default_print=ndo_default_print;
ndo->ndo_printf=ndo_printf;
ndo->ndo_error=ndo_error;
ndo->ndo_warning=ndo_warning;
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 8
* End:
*/
|