3 * $Id: wtap.h,v 1.151 2004/01/29 10:58:28 guy Exp $
6 * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #ifdef HAVE_SYS_TIME_H
30 #ifdef HAVE_WINSOCK2_H
31 # include <winsock2.h>
37 /* Encapsulation types. Choose names that truly reflect
38 * what is contained in the packet trace file.
40 * WTAP_ENCAP_PER_PACKET is a value passed to "wtap_dump_open()" or
41 * "wtap_dump_fd_open()" to indicate that there is no single encapsulation
42 * type for all packets in the file; this may cause those routines to
43 * fail if the capture file format being written can't support that.
44 * It's also returned by "wtap_file_encap()" for capture files that
45 * don't have a single encapsulation type for all packets in the file.
47 * WTAP_ENCAP_UNKNOWN is returned by "wtap_pcap_encap_to_wtap_encap()"
48 * if it's handed an unknown encapsulation.
50 * WTAP_ENCAP_FDDI_BITSWAPPED is for FDDI captures on systems where the
51 * MAC addresses you get from the hardware are bit-swapped. Ideally,
52 * the driver would tell us that, but I know of none that do, so, for
53 * now, we base it on the machine on which we're *reading* the
54 * capture, rather than on the machine on which the capture was taken
55 * (they're probably likely to be the same). We assume that they're
56 * bit-swapped on everything except for systems running Ultrix, Alpha
57 * systems, and BSD/OS systems (that's what "tcpdump" does; I guess
58 * Digital decided to bit-swap addresses in the hardware or in the
59 * driver, and I guess BSDI bit-swapped them in the driver, given that
60 * BSD/OS generally runs on Boring Old PC's). If we create a wiretap
61 * save file format, we'd use the WTAP_ENCAP values to flag the
62 * encapsulation of a packet, so there we'd at least be able to base
63 * it on the machine on which the capture was taken.
65 * WTAP_ENCAP_LINUX_ATM_CLIP is the encapsulation you get with the
66 * ATM on Linux code from <http://linux-atm.sourceforge.net/>;
67 * that code adds a DLT_ATM_CLIP DLT_ code of 19, and that
68 * encapsulation isn't the same as the DLT_ATM_RFC1483 encapsulation
69 * presumably used on some BSD systems, which we turn into
70 * WTAP_ENCAP_ATM_RFC1483.
72 * WTAP_ENCAP_NULL corresponds to DLT_NULL from "libpcap". This
75 * 1) PPP-over-HDLC encapsulation, at least with some versions
76 * of ISDN4BSD (but not the current ones, it appears, unless
77 * I've missed something);
79 * 2) a 4-byte header containing the AF_ address family, in
80 * the byte order of the machine that saved the capture,
81 * for the packet, as used on many BSD systems for the
82 * loopback device and some other devices, or a 4-byte header
83 * containing the AF_ address family in network byte order,
84 * as used on recent OpenBSD systems for the loopback device;
86 * 3) a 4-byte header containing 2 octets of 0 and an Ethernet
87 * type in the byte order from an Ethernet header, that being
88 * what older versions of "libpcap" on Linux turn the Ethernet
89 * header for loopback interfaces into (0.6.0 and later versions
90 * leave the Ethernet header alone and make it DLT_EN10MB). */
91 #define WTAP_ENCAP_PER_PACKET -1
92 #define WTAP_ENCAP_UNKNOWN 0
93 #define WTAP_ENCAP_ETHERNET 1
94 #define WTAP_ENCAP_TOKEN_RING 2
95 #define WTAP_ENCAP_SLIP 3
96 #define WTAP_ENCAP_PPP 4
97 #define WTAP_ENCAP_FDDI 5
98 #define WTAP_ENCAP_FDDI_BITSWAPPED 6
99 #define WTAP_ENCAP_RAW_IP 7
100 #define WTAP_ENCAP_ARCNET 8
101 #define WTAP_ENCAP_ARCNET_LINUX 9
102 #define WTAP_ENCAP_ATM_RFC1483 10
103 #define WTAP_ENCAP_LINUX_ATM_CLIP 11
104 #define WTAP_ENCAP_LAPB 12
105 #define WTAP_ENCAP_ATM_PDUS 13
106 #define WTAP_ENCAP_ATM_PDUS_UNTRUNCATED 14
107 #define WTAP_ENCAP_NULL 15
108 #define WTAP_ENCAP_ASCEND 16
109 #define WTAP_ENCAP_ISDN 17
110 #define WTAP_ENCAP_IP_OVER_FC 18
111 #define WTAP_ENCAP_PPP_WITH_PHDR 19
112 #define WTAP_ENCAP_IEEE_802_11 20
113 #define WTAP_ENCAP_PRISM_HEADER 21
114 #define WTAP_ENCAP_IEEE_802_11_WITH_RADIO 22
115 #define WTAP_ENCAP_IEEE_802_11_WLAN_BSD 23
116 #define WTAP_ENCAP_IEEE_802_11_WLAN_AVS 24
117 #define WTAP_ENCAP_SLL 25
118 #define WTAP_ENCAP_FRELAY 26
119 #define WTAP_ENCAP_FRELAY_WITH_PHDR 27
120 #define WTAP_ENCAP_CHDLC 28
121 #define WTAP_ENCAP_CISCO_IOS 29
122 #define WTAP_ENCAP_LOCALTALK 30
123 #define WTAP_ENCAP_OLD_PFLOG 31
124 #define WTAP_ENCAP_HHDLC 32
125 #define WTAP_ENCAP_DOCSIS 33
126 #define WTAP_ENCAP_COSINE 34
127 #define WTAP_ENCAP_WFLEET_HDLC 35
128 #define WTAP_ENCAP_SDLC 36
129 #define WTAP_ENCAP_TZSP 37
130 #define WTAP_ENCAP_ENC 38
131 #define WTAP_ENCAP_PFLOG 39
132 #define WTAP_ENCAP_CHDLC_WITH_PHDR 40
133 #define WTAP_ENCAP_BLUETOOTH_H4 41
134 #define WTAP_ENCAP_MTP2 42
135 #define WTAP_ENCAP_MTP3 43
136 #define WTAP_ENCAP_IRDA 44
137 #define WTAP_ENCAP_USER0 45
138 #define WTAP_ENCAP_USER1 46
139 #define WTAP_ENCAP_USER2 47
140 #define WTAP_ENCAP_USER3 48
141 #define WTAP_ENCAP_USER4 49
142 #define WTAP_ENCAP_USER5 50
143 #define WTAP_ENCAP_USER6 51
144 #define WTAP_ENCAP_USER7 52
145 #define WTAP_ENCAP_USER8 53
146 #define WTAP_ENCAP_USER9 54
147 #define WTAP_ENCAP_USER10 55
148 #define WTAP_ENCAP_USER11 56
149 #define WTAP_ENCAP_USER12 57
150 #define WTAP_ENCAP_USER13 58
151 #define WTAP_ENCAP_USER14 59
152 #define WTAP_ENCAP_USER15 60
154 /* last WTAP_ENCAP_ value + 1 */
155 #define WTAP_NUM_ENCAP_TYPES 61
157 /* File types that can be read by wiretap.
158 We support writing some many of these file types, too, so we
159 distinguish between different versions of them. */
160 #define WTAP_FILE_UNKNOWN 0
161 #define WTAP_FILE_WTAP 1
162 #define WTAP_FILE_PCAP 2
163 #define WTAP_FILE_PCAP_SS990417 3
164 #define WTAP_FILE_PCAP_SS990915 4
165 #define WTAP_FILE_PCAP_SS991029 5
166 #define WTAP_FILE_PCAP_NOKIA 6
167 #define WTAP_FILE_PCAP_AIX 7
168 #define WTAP_FILE_LANALYZER 8
169 #define WTAP_FILE_NGSNIFFER_UNCOMPRESSED 9
170 #define WTAP_FILE_NGSNIFFER_COMPRESSED 10
171 #define WTAP_FILE_SNOOP 11
172 #define WTAP_FILE_SHOMITI 12
173 #define WTAP_FILE_IPTRACE_1_0 13
174 #define WTAP_FILE_IPTRACE_2_0 14
175 #define WTAP_FILE_NETMON_1_x 15
176 #define WTAP_FILE_NETMON_2_x 16
177 #define WTAP_FILE_NETXRAY_OLD 17
178 #define WTAP_FILE_NETXRAY_1_0 18
179 #define WTAP_FILE_NETXRAY_1_1 19
180 #define WTAP_FILE_NETXRAY_2_00x 20
181 #define WTAP_FILE_RADCOM 21
182 #define WTAP_FILE_ASCEND 22
183 #define WTAP_FILE_NETTL 23
184 #define WTAP_FILE_TOSHIBA 24
185 #define WTAP_FILE_I4BTRACE 25
186 #define WTAP_FILE_CSIDS 26
187 #define WTAP_FILE_PPPDUMP 27
188 #define WTAP_FILE_ETHERPEEK_V56 28
189 #define WTAP_FILE_ETHERPEEK_V7 29
190 #define WTAP_FILE_VMS 30
191 #define WTAP_FILE_DBS_ETHERWATCH 31
192 #define WTAP_FILE_VISUAL_NETWORKS 32
193 #define WTAP_FILE_COSINE 33
194 #define WTAP_FILE_5VIEWS 34
195 #define WTAP_FILE_ERF 35
196 #define WTAP_FILE_HCIDUMP 36
197 #define WTAP_FILE_NETWORK_INSTRUMENTS_V9 37
198 #define WTAP_FILE_AIROPEEK_V9 38
200 /* last WTAP_FILE_ value + 1 */
201 #define WTAP_NUM_FILE_TYPES 39
204 * Maximum packet size we'll support.
205 * It must be at least 65535.
207 #define WTAP_MAX_PACKET_SIZE 65535
210 * "Pseudo-headers" are used to supply to the clients of wiretap
211 * per-packet information that's not part of the packet payload
214 * NOTE: do not use pseudo-header structures to hold information
215 * used by the code to read a particular capture file type; to
216 * keep that sort of state information, add a new structure for
217 * that private information to "wtap-int.h", add a pointer to that
218 * type of structure to the "capture" member of the "struct wtap"
219 * structure, and allocate one of those structures and set that member
220 * in the "open" routine for that capture file type if the open
221 * succeeds. See various other capture file type handlers for examples
225 /* Packet "pseudo-header" information for Ethernet capture files. */
227 gint fcs_len; /* Number of bytes of FCS - -1 means "unknown" */
230 /* Packet "pseudo-header" information for X.25 capture files. */
231 #define FROM_DCE 0x80
233 guint8 flags; /* ENCAP_LAPB, ENCAP_V120 : 1st bit means From DCE */
236 /* Packet "pseudo-header" information for ISDN capture files. */
241 guint8 channel; /* 0 = D-channel; n = B-channel n */
244 /* Packet "pseudo-header" for ATM capture files.
245 Not all of this information is supplied by all capture types. */
250 #define ATM_RAW_CELL 0x01 /* TRUE if the packet is a single cell */
255 #define AAL_UNKNOWN 0 /* AAL unknown */
256 #define AAL_1 1 /* AAL1 */
257 #define AAL_2 2 /* AAL2 */
258 #define AAL_3_4 3 /* AAL3/4 */
259 #define AAL_5 4 /* AAL5 */
260 #define AAL_USER 5 /* User AAL */
261 #define AAL_SIGNALLING 6 /* Signaling AAL */
262 #define AAL_OAMCELL 7 /* OAM cell */
267 #define TRAF_UNKNOWN 0 /* Unknown */
268 #define TRAF_LLCMX 1 /* LLC multiplexed (RFC 1483) */
269 #define TRAF_VCMX 2 /* VC multiplexed (RFC 1483) */
270 #define TRAF_LANE 3 /* LAN Emulation */
271 #define TRAF_ILMI 4 /* ILMI */
272 #define TRAF_FR 5 /* Frame Relay */
273 #define TRAF_SPANS 6 /* FORE SPANS */
274 #define TRAF_IPSILON 7 /* Ipsilon */
279 #define TRAF_ST_UNKNOWN 0 /* Unknown */
284 #define TRAF_ST_VCMX_802_3_FCS 1 /* 802.3 with an FCS */
285 #define TRAF_ST_VCMX_802_4_FCS 2 /* 802.4 with an FCS */
286 #define TRAF_ST_VCMX_802_5_FCS 3 /* 802.5 with an FCS */
287 #define TRAF_ST_VCMX_FDDI_FCS 4 /* FDDI with an FCS */
288 #define TRAF_ST_VCMX_802_6_FCS 5 /* 802.6 with an FCS */
289 #define TRAF_ST_VCMX_802_3 7 /* 802.3 without an FCS */
290 #define TRAF_ST_VCMX_802_4 8 /* 802.4 without an FCS */
291 #define TRAF_ST_VCMX_802_5 9 /* 802.5 without an FCS */
292 #define TRAF_ST_VCMX_FDDI 10 /* FDDI without an FCS */
293 #define TRAF_ST_VCMX_802_6 11 /* 802.6 without an FCS */
294 #define TRAF_ST_VCMX_FRAGMENTS 12 /* Fragments */
295 #define TRAF_ST_VCMX_BPDU 13 /* BPDU */
300 #define TRAF_ST_LANE_LE_CTRL 1 /* LANE: LE Ctrl */
301 #define TRAF_ST_LANE_802_3 2 /* LANE: 802.3 */
302 #define TRAF_ST_LANE_802_5 3 /* LANE: 802.5 */
303 #define TRAF_ST_LANE_802_3_MC 4 /* LANE: 802.3 multicast */
304 #define TRAF_ST_LANE_802_5_MC 5 /* LANE: 802.5 multicast */
309 #define TRAF_ST_IPSILON_FT0 1 /* Ipsilon: Flow Type 0 */
310 #define TRAF_ST_IPSILON_FT1 2 /* Ipsilon: Flow Type 1 */
311 #define TRAF_ST_IPSILON_FT2 3 /* Ipsilon: Flow Type 2 */
314 guint32 flags; /* status flags */
315 guint8 aal; /* AAL of the traffic */
316 guint8 type; /* traffic type */
317 guint8 subtype; /* traffic subtype */
318 guint16 vpi; /* virtual path identifier */
319 guint16 vci; /* virtual circuit identifier */
320 guint16 channel; /* link: 0 for DTE->DCE, 1 for DCE->DTE */
321 guint16 cells; /* number of cells */
322 guint16 aal5t_u2u; /* user-to-user indicator */
323 guint16 aal5t_len; /* length of the packet */
324 guint32 aal5t_chksum; /* checksum for AAL5 packet */
327 /* Packet "pseudo-header" for the output from "wandsession", "wannext",
328 "wandisplay", and similar commands on Lucent/Ascend access equipment. */
330 #define ASCEND_MAX_STR_LEN 64
332 #define ASCEND_PFX_WDS_X 1
333 #define ASCEND_PFX_WDS_R 2
334 #define ASCEND_PFX_WDD 3
337 guint16 type; /* ASCEND_PFX_*, as defined above */
338 char user[ASCEND_MAX_STR_LEN]; /* Username, from wandsession header */
339 guint32 sess; /* Session number, from wandsession header */
340 char call_num[ASCEND_MAX_STR_LEN]; /* Called number, from WDD header */
341 guint32 chunk; /* Chunk number, from WDD header */
342 guint32 task; /* Task number */
345 /* Packet "pseudo-header" for point-to-point links with direction flags. */
347 gboolean sent; /* TRUE=sent, FALSE=received */
350 /* Packet "pseudo-header" information for 802.11
351 Radio information is only present for WTAP_ENCAP_IEEE_802_11_WITH_RADIO. */
352 struct ieee_802_11_phdr {
353 gint fcs_len; /* Number of bytes of FCS - -1 means "unknown" */
354 guint8 channel; /* Channel number */
355 guint8 data_rate; /* in .5 Mb/s units */
356 guint8 signal_level; /* percentage */
359 /* Packet "pseudo-header" for the output from CoSine L2 debug output. */
361 #define COSINE_MAX_IF_NAME_LEN 128
363 #define COSINE_ENCAP_TEST 1
364 #define COSINE_ENCAP_PPoATM 2
365 #define COSINE_ENCAP_PPoFR 3
366 #define COSINE_ENCAP_ATM 4
367 #define COSINE_ENCAP_FR 5
368 #define COSINE_ENCAP_HDLC 6
369 #define COSINE_ENCAP_PPP 7
370 #define COSINE_ENCAP_ETH 8
371 #define COSINE_ENCAP_UNKNOWN 99
373 #define COSINE_DIR_TX 1
374 #define COSINE_DIR_RX 2
377 guint8 encap; /* COSINE_ENCAP_* as defined above */
378 guint8 direction; /* COSINE_DIR_*, as defined above */
379 char if_name[COSINE_MAX_IF_NAME_LEN]; /* Encap & Logical I/F name */
380 guint16 pro; /* Protocol */
381 guint16 off; /* Offset */
382 guint16 pri; /* Priority */
383 guint16 rm; /* Rate Marking */
384 guint16 err; /* Error Code */
387 /* Packet "pseudo-header" for IrDA capture files. */
390 * Direction of the packet
392 #define IRDA_INCOMING 0x0000
393 #define IRDA_OUTGOING 0x0004
396 * "Inline" log messages produced by IrCOMM2k on Windows
398 #define IRDA_LOG_MESSAGE 0x0100 /* log message */
399 #define IRDA_MISSED_MSG 0x0101 /* missed log entry or frame */
402 * Differentiate between frames and log messages
404 #define IRDA_CLASS_FRAME 0x0000
405 #define IRDA_CLASS_LOG 0x0100
406 #define IRDA_CLASS_MASK 0xFF00
409 guint16 pkttype; /* packet type */
412 union wtap_pseudo_header {
415 struct isdn_phdr isdn;
417 struct ascend_phdr ascend;
419 struct ieee_802_11_phdr ieee_802_11;
420 struct cosine_phdr cosine;
421 struct irda_phdr irda;
431 typedef void (*wtap_handler)(guchar*, const struct wtap_pkthdr*,
432 long, union wtap_pseudo_header *pseudo_header, const guchar *);
438 typedef struct wtap wtap;
439 typedef struct wtap_dumper wtap_dumper;
442 * On failure, "wtap_open_offline()" returns NULL, and puts into the
443 * "int" pointed to by its second argument:
445 * a positive "errno" value if the capture file can't be opened;
447 * a negative number, indicating the type of error, on other failures.
449 struct wtap* wtap_open_offline(const char *filename, int *err,
450 gchar **err_info, gboolean do_random);
452 /* Returns TRUE if entire loop-reading was successful. If read failure
453 * happened, FALSE is returned and err is set. */
454 gboolean wtap_loop(wtap *wth, int, wtap_handler, guchar*, int *err,
457 /* Returns TRUE if read was successful. FALSE if failure. data_offset is
458 * set the the offset in the file where the data for the read packet is
460 gboolean wtap_read(wtap *wth, int *err, gchar **err_info,
463 struct wtap_pkthdr *wtap_phdr(wtap *wth);
464 union wtap_pseudo_header *wtap_pseudoheader(wtap *wth);
465 guint8 *wtap_buf_ptr(wtap *wth);
467 int wtap_fd(wtap *wth);
468 int wtap_snapshot_length(wtap *wth); /* per file */
469 int wtap_file_type(wtap *wth);
470 int wtap_file_encap(wtap *wth);
472 const char *wtap_file_type_string(int filetype);
473 const char *wtap_file_type_short_string(int filetype);
474 int wtap_short_string_to_file_type(const char *short_name);
476 const char *wtap_encap_string(int encap);
477 const char *wtap_encap_short_string(int encap);
478 int wtap_short_string_to_encap(const char *short_name);
480 const char *wtap_strerror(int err);
481 void wtap_sequential_close(wtap *wth);
482 void wtap_close(wtap *wth);
483 gboolean wtap_seek_read (wtap *wth, long seek_off,
484 union wtap_pseudo_header *pseudo_header, guint8 *pd, int len,
485 int *err, gchar **err_info);
487 gboolean wtap_dump_can_open(int filetype);
488 gboolean wtap_dump_can_write_encap(int filetype, int encap);
489 wtap_dumper* wtap_dump_open(const char *filename, int filetype, int encap,
490 int snaplen, int *err);
491 wtap_dumper* wtap_dump_fdopen(int fd, int filetype, int encap, int snaplen,
493 gboolean wtap_dump(wtap_dumper *, const struct wtap_pkthdr *,
494 const union wtap_pseudo_header *pseudo_header, const guchar *, int *err);
495 FILE* wtap_dump_file(wtap_dumper *);
496 gboolean wtap_dump_close(wtap_dumper *, int *);
497 long wtap_get_bytes_dumped(wtap_dumper *);
498 void wtap_set_bytes_dumped(wtap_dumper *wdh, long bytes_dumped);
501 * Wiretap error codes.
503 #define WTAP_ERR_NOT_REGULAR_FILE -1
504 /* The file being opened for reading isn't a plain file (or pipe) */
505 #define WTAP_ERR_RANDOM_OPEN_PIPE -2
506 /* The file is being opened for random access and it's a pipe */
507 #define WTAP_ERR_FILE_UNKNOWN_FORMAT -3
508 /* The file being opened is not a capture file in a known format */
509 #define WTAP_ERR_UNSUPPORTED -4
510 /* Supported file type, but there's something in the file we
512 #define WTAP_ERR_CANT_WRITE_TO_PIPE -5
513 /* Wiretap can't save to a pipe in the specified format */
514 #define WTAP_ERR_CANT_OPEN -6
515 /* The file couldn't be opened, reason unknown */
516 #define WTAP_ERR_UNSUPPORTED_FILE_TYPE -7
517 /* Wiretap can't save files in the specified format */
518 #define WTAP_ERR_UNSUPPORTED_ENCAP -8
519 /* Wiretap can't read or save files in the specified format with the
520 specified encapsulation */
521 #define WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED -9
522 /* The specified format doesn't support per-packet encapsulations */
523 #define WTAP_ERR_CANT_CLOSE -10
524 /* The file couldn't be closed, reason unknown */
525 #define WTAP_ERR_CANT_READ -11
526 /* An attempt to read failed, reason unknown */
527 #define WTAP_ERR_SHORT_READ -12
528 /* An attempt to read read less data than it should have */
529 #define WTAP_ERR_BAD_RECORD -13
530 /* We read an invalid record */
531 #define WTAP_ERR_SHORT_WRITE -14
532 /* An attempt to write wrote less data than it should have */
533 #define WTAP_ERR_UNC_TRUNCATED -15
534 /* Sniffer compressed data was oddly truncated */
535 #define WTAP_ERR_UNC_OVERFLOW -16
536 /* Uncompressing Sniffer data would overflow buffer */
537 #define WTAP_ERR_UNC_BAD_OFFSET -17
538 /* LZ77 compressed data has bad offset to string */
540 /* Errors from zlib; zlib error Z_xxx turns into Wiretap error
541 WTAP_ERR_ZLIB + Z_xxx.
543 WTAP_ERR_ZLIB_MIN and WTAP_ERR_ZLIB_MAX bound the range of zlib
544 errors; we leave room for 100 positive and 100 negative error
547 #define WTAP_ERR_ZLIB -200
548 #define WTAP_ERR_ZLIB_MAX -100
549 #define WTAP_ERR_ZLIB_MIN -300
552 #endif /* __WTAP_H__ */