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authorGuy Harris <guy@alum.mit.edu>2012-07-09 23:07:28 +0000
committerGuy Harris <guy@alum.mit.edu>2012-07-09 23:07:28 +0000
commit9fcbc2377fa09fb6c4837780faac307b467486ae (patch)
tree7f8e1e178c63debb56384169d620eaeef8f76c23 /wiretap/etherpeek.c
parent4705839f110e9cbef5538e9a205fa59524aba83d (diff)
The names "etherpeek" and "airopeek" are a bit misleading, as the
"etherpeek.c" file format is used by AiroPeek and the "airopeek9.c" file format is used by EtherPeek. Instead, use the names that WildPackets apparently uses for those formats - "classic" and "tagged". svn path=/trunk/; revision=43630
Diffstat (limited to 'wiretap/etherpeek.c')
-rw-r--r--wiretap/etherpeek.c604
1 files changed, 0 insertions, 604 deletions
diff --git a/wiretap/etherpeek.c b/wiretap/etherpeek.c
deleted file mode 100644
index 419364922f..0000000000
--- a/wiretap/etherpeek.c
+++ /dev/null
@@ -1,604 +0,0 @@
-/* etherpeek.c
- * Routines for opening EtherPeek and AiroPeek (and TokenPeek?) V5, V6,
- * and V7 files
- * Copyright (c) 2001, Daniel Thompson <d.thompson@gmx.net>
- *
- * $Id$
- *
- * Wiretap Library
- * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <errno.h>
-#include <string.h>
-#include "wtap-int.h"
-#include "file_wrappers.h"
-#include "buffer.h"
-#include "etherpeek.h"
-/* CREDITS
- *
- * This file decoder could not have been writen without examining how
- * tcptrace (http://www.tcptrace.org/) handles EtherPeek files.
- */
-
-/*
- * NOTE: it says "etherpeek" because the first files seen that use this
- * format were EtherPeek files; however, AiroPeek files using it have
- * also been seen, and I suspect TokenPeek uses it as well.
- */
-
-/* master header */
-typedef struct etherpeek_master_header {
- guint8 version;
- guint8 status;
-} etherpeek_master_header_t;
-#define ETHERPEEK_MASTER_HDR_SIZE 2
-
-/* secondary header (V5,V6,V7) */
-typedef struct etherpeek_v567_header {
- guint32 filelength;
- guint32 numPackets;
- guint32 timeDate;
- guint32 timeStart;
- guint32 timeStop;
- guint32 mediaType; /* Media Type Ethernet=0 Token Ring = 1 */
- guint32 physMedium; /* Physical Medium native=0 802.1=1 */
- guint32 appVers; /* App Version Number Maj.Min.Bug.Build */
- guint32 linkSpeed; /* Link Speed Bits/sec */
- guint32 reserved[3];
-} etherpeek_v567_header_t;
-#define ETHERPEEK_V567_HDR_SIZE 48
-
-/* full header */
-typedef struct etherpeek_header {
- etherpeek_master_header_t master;
- union {
- etherpeek_v567_header_t v567;
- } secondary;
-} etherpeek_header_t;
-
-/*
- * Packet header (V5, V6).
- *
- * NOTE: the time stamp, although it's a 32-bit number, is only aligned
- * on a 16-bit boundary. (Does this date back to 68K Macs? The 68000
- * only required 16-bit alignment of 32-bit quantities, as did the 68010,
- * and the 68020/68030/68040 required no alignment.)
- *
- * As such, we cannot declare this as a C structure, as compilers on
- * most platforms will put 2 bytes of padding before the time stamp to
- * align it on a 32-bit boundary.
- *
- * So, instead, we #define numbers as the offsets of the fields.
- */
-#define ETHERPEEK_V56_LENGTH_OFFSET 0
-#define ETHERPEEK_V56_SLICE_LENGTH_OFFSET 2
-#define ETHERPEEK_V56_FLAGS_OFFSET 4
-#define ETHERPEEK_V56_STATUS_OFFSET 5
-#define ETHERPEEK_V56_TIMESTAMP_OFFSET 6
-#define ETHERPEEK_V56_DESTNUM_OFFSET 10
-#define ETHERPEEK_V56_SRCNUM_OFFSET 12
-#define ETHERPEEK_V56_PROTONUM_OFFSET 14
-#define ETHERPEEK_V56_PROTOSTR_OFFSET 16
-#define ETHERPEEK_V56_FILTERNUM_OFFSET 24
-#define ETHERPEEK_V56_PKT_SIZE 26
-
-/* 64-bit time in micro seconds from the (Mac) epoch */
-typedef struct etherpeek_utime {
- guint32 upper;
- guint32 lower;
-} etherpeek_utime;
-
-/*
- * Packet header (V7).
- *
- * This doesn't have the same alignment problem, but we do it with
- * #defines anyway.
- */
-#define ETHERPEEK_V7_PROTONUM_OFFSET 0
-#define ETHERPEEK_V7_LENGTH_OFFSET 2
-#define ETHERPEEK_V7_SLICE_LENGTH_OFFSET 4
-#define ETHERPEEK_V7_FLAGS_OFFSET 6
-#define ETHERPEEK_V7_STATUS_OFFSET 7
-#define ETHERPEEK_V7_TIMESTAMP_OFFSET 8
-#define ETHERPEEK_V7_PKT_SIZE 16
-
-typedef struct etherpeek_encap_lookup {
- guint16 protoNum;
- int encap;
-} etherpeek_encap_lookup_t;
-
-static const unsigned int mac2unix = 2082844800u;
-static const etherpeek_encap_lookup_t etherpeek_encap[] = {
- { 1400, WTAP_ENCAP_ETHERNET }
-};
-#define NUM_ETHERPEEK_ENCAPS \
- (sizeof (etherpeek_encap) / sizeof (etherpeek_encap[0]))
-
-typedef struct {
- struct timeval reference_time;
-} etherpeek_t;
-
-static gboolean etherpeek_read_v7(wtap *wth, int *err, gchar **err_info,
- gint64 *data_offset);
-static gboolean etherpeek_seek_read_v7(wtap *wth, gint64 seek_off,
- union wtap_pseudo_header *pseudo_header, guint8 *pd, int length,
- int *err, gchar **err_info);
-static gboolean etherpeek_read_v56(wtap *wth, int *err, gchar **err_info,
- gint64 *data_offset);
-static gboolean etherpeek_seek_read_v56(wtap *wth, gint64 seek_off,
- union wtap_pseudo_header *pseudo_header, guint8 *pd, int length,
- int *err, gchar **err_info);
-
-int etherpeek_open(wtap *wth, int *err, gchar **err_info)
-{
- etherpeek_header_t ep_hdr;
- struct timeval reference_time;
- int file_encap;
- etherpeek_t *etherpeek;
-
- /* EtherPeek files do not start with a magic value large enough
- * to be unique; hence we use the following algorithm to determine
- * the type of an unknown file:
- * - populate the master header and reject file if there is no match
- * - populate the secondary header and check that the reserved space
- * is zero, and check some other fields; this isn't perfect,
- * and we may have to add more checks at some point.
- */
- g_assert(sizeof(ep_hdr.master) == ETHERPEEK_MASTER_HDR_SIZE);
- wtap_file_read_unknown_bytes(
- &ep_hdr.master, sizeof(ep_hdr.master), wth->fh, err, err_info);
-
- /*
- * It appears that EtherHelp (a free application from WildPackets
- * that did blind capture, saving to a file, so that you could
- * give the resulting file to somebody with EtherPeek) saved
- * captures in EtherPeek format except that it ORed the 0x80
- * bit on in the version number.
- *
- * We therefore strip off the 0x80 bit in the version number.
- * Perhaps there's some reason to care whether the capture
- * came from EtherHelp; if we discover one, we should check
- * that bit.
- */
- ep_hdr.master.version &= ~0x80;
-
- /* switch on the file version */
- switch (ep_hdr.master.version) {
-
- case 5:
- case 6:
- case 7:
- /* get the secondary header */
- g_assert(sizeof(ep_hdr.secondary.v567) ==
- ETHERPEEK_V567_HDR_SIZE);
- wtap_file_read_unknown_bytes(
- &ep_hdr.secondary.v567,
- sizeof(ep_hdr.secondary.v567), wth->fh, err, err_info);
-
- if ((0 != ep_hdr.secondary.v567.reserved[0]) ||
- (0 != ep_hdr.secondary.v567.reserved[1]) ||
- (0 != ep_hdr.secondary.v567.reserved[2])) {
- /* still unknown */
- return 0;
- }
-
- /*
- * Check the mediaType and physMedium fields.
- * We assume it's not an EtherPeek/TokenPeek/AiroPeek
- * file if these aren't values we know, rather than
- * reporting them as invalid *Peek files, as, given
- * the lack of a magic number, we need all the checks
- * we can get.
- */
- ep_hdr.secondary.v567.mediaType =
- g_ntohl(ep_hdr.secondary.v567.mediaType);
- ep_hdr.secondary.v567.physMedium =
- g_ntohl(ep_hdr.secondary.v567.physMedium);
-
- switch (ep_hdr.secondary.v567.physMedium) {
-
- case 0:
- /*
- * "Native" format, presumably meaning
- * Ethernet or Token Ring.
- */
- switch (ep_hdr.secondary.v567.mediaType) {
-
- case 0:
- file_encap = WTAP_ENCAP_ETHERNET;
- break;
-
- case 1:
- file_encap = WTAP_ENCAP_TOKEN_RING;
- break;
-
- default:
- /*
- * Assume this isn't a *Peek file.
- */
- return 0;
- }
- break;
-
- case 1:
- switch (ep_hdr.secondary.v567.mediaType) {
-
- case 0:
- /*
- * 802.11, with a private header giving
- * some radio information. Presumably
- * this is from AiroPeek.
- */
- file_encap = WTAP_ENCAP_IEEE_802_11_AIROPEEK;
- break;
-
- default:
- /*
- * Assume this isn't a *Peek file.
- */
- return 0;
- }
- break;
-
- default:
- /*
- * Assume this isn't a *Peek file.
- */
- return 0;
- }
-
-
- /*
- * Assume this is a V5, V6 or V7 *Peek file, and byte
- * swap the rest of the fields in the secondary header.
- *
- * XXX - we could check the file length if the file were
- * uncompressed, but it might be compressed.
- */
- ep_hdr.secondary.v567.filelength =
- g_ntohl(ep_hdr.secondary.v567.filelength);
- ep_hdr.secondary.v567.numPackets =
- g_ntohl(ep_hdr.secondary.v567.numPackets);
- ep_hdr.secondary.v567.timeDate =
- g_ntohl(ep_hdr.secondary.v567.timeDate);
- ep_hdr.secondary.v567.timeStart =
- g_ntohl(ep_hdr.secondary.v567.timeStart);
- ep_hdr.secondary.v567.timeStop =
- g_ntohl(ep_hdr.secondary.v567.timeStop);
- ep_hdr.secondary.v567.appVers =
- g_ntohl(ep_hdr.secondary.v567.appVers);
- ep_hdr.secondary.v567.linkSpeed =
- g_ntohl(ep_hdr.secondary.v567.linkSpeed);
-
- /* Get the reference time as a "struct timeval" */
- reference_time.tv_sec =
- ep_hdr.secondary.v567.timeDate - mac2unix;
- reference_time.tv_usec = 0;
- break;
-
- default:
- /*
- * Assume this isn't a *Peek file.
- */
- return 0;
- }
-
- /*
- * This is an EtherPeek (or TokenPeek or AiroPeek?) file.
- *
- * At this point we have recognised the file type and have populated
- * the whole ep_hdr structure in host byte order.
- */
- etherpeek = (etherpeek_t *)g_malloc(sizeof(etherpeek_t));
- wth->priv = (void *)etherpeek;
- etherpeek->reference_time = reference_time;
- switch (ep_hdr.master.version) {
-
- case 5:
- case 6:
- wth->file_type = WTAP_FILE_ETHERPEEK_V56;
- /*
- * XXX - can we get the file encapsulation from the
- * header in the same way we do for V7 files?
- */
- wth->file_encap = WTAP_ENCAP_PER_PACKET;
- wth->subtype_read = etherpeek_read_v56;
- wth->subtype_seek_read = etherpeek_seek_read_v56;
- break;
-
- case 7:
- wth->file_type = WTAP_FILE_ETHERPEEK_V7;
- wth->file_encap = file_encap;
- wth->subtype_read = etherpeek_read_v7;
- wth->subtype_seek_read = etherpeek_seek_read_v7;
- break;
-
- default:
- /* this is impossible */
- g_assert_not_reached();
- }
-
- wth->snapshot_length = 0; /* not available in header */
- wth->tsprecision = WTAP_FILE_TSPREC_USEC;
-
- return 1;
-}
-
-static gboolean etherpeek_read_v7(wtap *wth, int *err, gchar **err_info,
- gint64 *data_offset)
-{
- guint8 ep_pkt[ETHERPEEK_V7_PKT_SIZE];
-#if 0
- guint16 protoNum;
-#endif
- guint16 length;
- guint16 sliceLength;
-#if 0
- guint8 flags;
-#endif
- guint8 status;
- guint64 timestamp;
- time_t tsecs;
- guint32 tusecs;
-
- *data_offset = file_tell(wth->fh);
-
- wtap_file_read_expected_bytes(ep_pkt, sizeof(ep_pkt), wth->fh, err,
- err_info);
-
- /* Extract the fields from the packet */
-#if 0
- protoNum = pntohs(&ep_pkt[ETHERPEEK_V7_PROTONUM_OFFSET]);
-#endif
- length = pntohs(&ep_pkt[ETHERPEEK_V7_LENGTH_OFFSET]);
- sliceLength = pntohs(&ep_pkt[ETHERPEEK_V7_SLICE_LENGTH_OFFSET]);
-#if 0
- flags = ep_pkt[ETHERPEEK_V7_FLAGS_OFFSET];
-#endif
- status = ep_pkt[ETHERPEEK_V7_STATUS_OFFSET];
- timestamp = pntohll(&ep_pkt[ETHERPEEK_V7_TIMESTAMP_OFFSET]);
-
- /* force sliceLength to be the actual length of the packet */
- if (0 == sliceLength) {
- sliceLength = length;
- }
-
- wth->phdr.presence_flags = WTAP_HAS_TS|WTAP_HAS_CAP_LEN;
-
- /* fill in packet header length values before slicelength may be
- adjusted */
- wth->phdr.len = length;
- wth->phdr.caplen = sliceLength;
-
- if (sliceLength % 2) /* packets are padded to an even length */
- sliceLength++;
-
- switch (wth->file_encap) {
-
- case WTAP_ENCAP_IEEE_802_11_AIROPEEK:
- wth->pseudo_header.ieee_802_11.fcs_len = 0; /* no FCS */
- break;
-
- case WTAP_ENCAP_ETHERNET:
- /* XXX - it appears that if the low-order bit of
- "status" is 0, there's an FCS in this frame,
- and if it's 1, there's 4 bytes of 0. */
- wth->pseudo_header.eth.fcs_len = (status & 0x01) ? 0 : 4;
- break;
- }
-
- /* read the frame data */
- buffer_assure_space(wth->frame_buffer, sliceLength);
- wtap_file_read_expected_bytes(buffer_start_ptr(wth->frame_buffer),
- sliceLength, wth->fh, err, err_info);
-
- /* fill in packet header values */
- tsecs = (time_t) (timestamp/1000000);
- tusecs = (guint32) (timestamp - tsecs*1000000);
- wth->phdr.ts.secs = tsecs - mac2unix;
- wth->phdr.ts.nsecs = tusecs * 1000;
-
- if (wth->file_encap == WTAP_ENCAP_IEEE_802_11_AIROPEEK) {
- /*
- * The last 4 bytes appear to be random data - the length
- * might include the FCS - so we reduce the length by 4.
- *
- * Or maybe this is just the same kind of random 4 bytes
- * of junk at the end you get in Wireless Sniffer
- * captures.
- */
- wth->phdr.len -= 4;
- wth->phdr.caplen -= 4;
- }
-
- return TRUE;
-}
-
-static gboolean
-etherpeek_seek_read_v7(wtap *wth, gint64 seek_off,
- union wtap_pseudo_header *pseudo_header, guint8 *pd, int length,
- int *err, gchar **err_info)
-{
- guint8 ep_pkt[ETHERPEEK_V7_PKT_SIZE];
- guint8 status;
-
- if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
- return FALSE;
-
- /* Read the packet header. */
- wtap_file_read_expected_bytes(ep_pkt, sizeof(ep_pkt), wth->random_fh,
- err, err_info);
- status = ep_pkt[ETHERPEEK_V7_STATUS_OFFSET];
-
- switch (wth->file_encap) {
-
- case WTAP_ENCAP_IEEE_802_11_AIROPEEK:
- pseudo_header->ieee_802_11.fcs_len = 0; /* no FCS */
- break;
-
- case WTAP_ENCAP_ETHERNET:
- /* XXX - it appears that if the low-order bit of
- "status" is 0, there's an FCS in this frame,
- and if it's 1, there's 4 bytes of 0. */
- pseudo_header->eth.fcs_len = (status & 0x01) ? 0 : 4;
- break;
- }
-
- /*
- * XXX - should "errno" be set in "wtap_file_read_expected_bytes()"?
- */
- errno = WTAP_ERR_CANT_READ;
- wtap_file_read_expected_bytes(pd, length, wth->random_fh, err,
- err_info);
- return TRUE;
-}
-
-static gboolean etherpeek_read_v56(wtap *wth, int *err, gchar **err_info,
- gint64 *data_offset)
-{
- etherpeek_t *etherpeek = (etherpeek_t *)wth->priv;
- guint8 ep_pkt[ETHERPEEK_V56_PKT_SIZE];
- guint16 length;
- guint16 sliceLength;
-#if 0
- guint8 flags;
- guint8 status;
-#endif
- guint32 timestamp;
-#if 0
- guint16 destNum;
- guint16 srcNum;
-#endif
- guint16 protoNum;
- char protoStr[8];
- unsigned int i;
-
- /*
- * XXX - in order to figure out whether this packet is an
- * Ethernet packet or not, we have to look at the packet
- * header, so we have to remember the address of the header,
- * not the address of the data, for random access.
- *
- * If we can determine that from the file header, rather than
- * the packet header, we can remember the offset of the data,
- * and not have the seek_read routine read the header.
- */
- *data_offset = file_tell(wth->fh);
-
- wtap_file_read_expected_bytes(ep_pkt, sizeof(ep_pkt), wth->fh, err,
- err_info);
-
- /* Extract the fields from the packet */
- length = pntohs(&ep_pkt[ETHERPEEK_V56_LENGTH_OFFSET]);
- sliceLength = pntohs(&ep_pkt[ETHERPEEK_V56_SLICE_LENGTH_OFFSET]);
-#if 0
- flags = ep_pkt[ETHERPEEK_V56_FLAGS_OFFSET];
- status = ep_pkt[ETHERPEEK_V56_STATUS_OFFSET];
-#endif
- timestamp = pntohl(&ep_pkt[ETHERPEEK_V56_TIMESTAMP_OFFSET]);
-#if 0
- destNum = pntohs(&ep_pkt[ETHERPEEK_V56_DESTNUM_OFFSET]);
- srcNum = pntohs(&ep_pkt[ETHERPEEK_V56_SRCNUM_OFFSET]);
-#endif
- protoNum = pntohs(&ep_pkt[ETHERPEEK_V56_PROTONUM_OFFSET]);
- memcpy(protoStr, &ep_pkt[ETHERPEEK_V56_PROTOSTR_OFFSET],
- sizeof protoStr);
-
- /*
- * XXX - is the captured packet data padded to a multiple
- * of 2 bytes?
- */
-
- /* force sliceLength to be the actual length of the packet */
- if (0 == sliceLength) {
- sliceLength = length;
- }
-
- /* read the frame data */
- buffer_assure_space(wth->frame_buffer, sliceLength);
- wtap_file_read_expected_bytes(buffer_start_ptr(wth->frame_buffer),
- sliceLength, wth->fh, err, err_info);
-
- /* fill in packet header values */
- wth->phdr.len = length;
- wth->phdr.caplen = sliceLength;
- /* timestamp is in milliseconds since reference_time */
- wth->phdr.ts.secs = etherpeek->reference_time.tv_sec
- + (timestamp / 1000);
- wth->phdr.ts.nsecs = 1000 * (timestamp % 1000) * 1000;
-
- wth->phdr.pkt_encap = WTAP_ENCAP_UNKNOWN;
- for (i=0; i<NUM_ETHERPEEK_ENCAPS; i++) {
- if (etherpeek_encap[i].protoNum == protoNum) {
- wth->phdr.pkt_encap = etherpeek_encap[i].encap;
- }
- }
-
- switch (wth->phdr.pkt_encap) {
-
- case WTAP_ENCAP_ETHERNET:
- /* We assume there's no FCS in this frame. */
- wth->pseudo_header.eth.fcs_len = 0;
- break;
- }
- return TRUE;
-}
-
-static gboolean
-etherpeek_seek_read_v56(wtap *wth, gint64 seek_off,
- union wtap_pseudo_header *pseudo_header, guint8 *pd, int length,
- int *err, gchar **err_info)
-{
- guint8 ep_pkt[ETHERPEEK_V56_PKT_SIZE];
- int pkt_encap;
- guint16 protoNum;
- unsigned int i;
-
- if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
- return FALSE;
-
- wtap_file_read_expected_bytes(ep_pkt, sizeof(ep_pkt), wth->random_fh,
- err, err_info);
-
- protoNum = pntohs(&ep_pkt[ETHERPEEK_V56_PROTONUM_OFFSET]);
- pkt_encap = WTAP_ENCAP_UNKNOWN;
- for (i=0; i<NUM_ETHERPEEK_ENCAPS; i++) {
- if (etherpeek_encap[i].protoNum == protoNum) {
- pkt_encap = etherpeek_encap[i].encap;
- }
- }
-
- switch (pkt_encap) {
-
- case WTAP_ENCAP_ETHERNET:
- /* We assume there's no FCS in this frame. */
- pseudo_header->eth.fcs_len = 0;
- break;
- }
-
- /*
- * XXX - should "errno" be set in "wtap_file_read_expected_bytes()"?
- */
- errno = WTAP_ERR_CANT_READ;
- wtap_file_read_expected_bytes(pd, length, wth->random_fh, err,
- err_info);
- return TRUE;
-}