2009-04-27 09:28:28 +00:00
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/* pcap-common.c
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* Code common to libpcap and pcap-NG file formats
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*
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* $Id$
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*
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* Wiretap Library
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* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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*
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* File format support for pcap-ng file format
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* Copyright (c) 2007 by Ulf Lamping <ulf.lamping@web.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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2009-04-27 19:39:06 +00:00
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "erf.h"
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2009-04-27 09:28:28 +00:00
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#include "pcap-common.h"
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/*
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* Map link-layer types (LINKTYPE_ values) to Wiretap encapsulations.
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*/
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/*
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* Either LBL NRG wasn't an adequate central registry (e.g., because of
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* the slow rate of releases from them), or nobody bothered using them
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* as a central registry, as many different groups have patched libpcap
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* (and BPF, on the BSDs) to add new encapsulation types, and have ended
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* up using the same DLT_ values for different encapsulation types.
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*
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* For those numerical encapsulation type values that everybody uses for
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* the same encapsulation type (which inclues those that some platforms
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* specify different DLT_ names for but don't appear to use), we map
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* those values to the appropriate Wiretap values.
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*
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* For those numerical encapsulation type values that different libpcap
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* variants use for different encapsulation types, we check what
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* <pcap.h> defined to determine how to interpret them, so that we
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* interpret them the way the libpcap with which we're building
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* Wireshark/Wiretap interprets them (which, if it doesn't support
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* them at all, means we don't support them either - any capture files
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* using them are foreign, and we don't hazard a guess as to which
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* platform they came from; we could, I guess, choose the most likely
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* platform).
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*
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* Note: if you need a new encapsulation type for libpcap files, do
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* *N*O*T* use *ANY* of the values listed here! I.e., do *NOT*
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* add a new encapsulation type by changing an existing entry;
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* leave the existing entries alone.
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*
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* Instead, send mail to tcpdump-workers@lists.tcpdump.org, asking for
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* a new DLT_ value, and specifying the purpose of the new value. When
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* you get the new DLT_ value, use that numerical value in the "dlt_value"
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* field of "pcap_to_wtap_map[]".
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*/
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2009-04-27 22:07:11 +00:00
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static const struct {
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int dlt_value;
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int wtap_encap_value;
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} pcap_to_wtap_map[] = {
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2009-04-27 09:28:28 +00:00
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/*
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* These are the values that are almost certainly the same
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* in all libpcaps (I've yet to find one where the values
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* in question are used for some purpose other than the
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* one below, but...), and that Wiretap and Wireshark
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* currently support.
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*/
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{ 0, WTAP_ENCAP_NULL }, /* null encapsulation */
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{ 1, WTAP_ENCAP_ETHERNET },
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{ 6, WTAP_ENCAP_TOKEN_RING }, /* IEEE 802 Networks - assume token ring */
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{ 7, WTAP_ENCAP_ARCNET },
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{ 8, WTAP_ENCAP_SLIP },
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{ 9, WTAP_ENCAP_PPP },
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#ifdef BIT_SWAPPED_MAC_ADDRS
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{ 10, WTAP_ENCAP_FDDI_BITSWAPPED },
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#else
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{ 10, WTAP_ENCAP_FDDI },
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#endif
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{ 32, WTAP_ENCAP_REDBACK },
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/*
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* 50 is DLT_PPP_SERIAL in NetBSD; it appears that DLT_PPP
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* on BSD (at least according to standard tcpdump) has, as
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* the first octet, an indication of whether the packet was
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* transmitted or received (rather than having the standard
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* PPP address value of 0xff), but that DLT_PPP_SERIAL puts
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* a real live PPP header there, or perhaps a Cisco PPP header
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* as per section 4.3.1 of RFC 1547 (implementations of this
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* exist in various BSDs in "sys/net/if_spppsubr.c", and
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* I think also exist either in standard Linux or in
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* various Linux patches; the implementations show how to handle
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* Cisco keepalive packets).
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*
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* However, I don't see any obvious place in FreeBSD "if_ppp.c"
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* where anything other than the standard PPP header would be
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* passed up. I see some stuff that sets the first octet
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* to 0 for incoming and 1 for outgoing packets before applying
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* a BPF filter to see whether to drop packets whose protocol
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* field has the 0x8000 bit set, i.e. network control protocols -
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* those are handed up to userland - but that code puts the
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* address field back before passing the packet up.
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*
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* I also don't see anything immediately obvious that munges
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* the address field for sync PPP, either.
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*
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* Wireshark currently assumes that if the first octet of a
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* PPP frame is 0xFF, it's the address field and is followed
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* by a control field and a 2-byte protocol, otherwise the
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* address and control fields are absent and the frame begins
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* with a protocol field. If we ever see a BSD/OS PPP
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* capture, we'll have to handle it differently, and we may
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* have to handle standard BSD captures differently if, in fact,
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* they don't have 0xff 0x03 as the first two bytes - but, as per
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* the two paragraphs preceding this, it's not clear that
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* the address field *is* munged into an incoming/outgoing
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* field when the packet is handed to the BPF device.
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*
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* For now, we just map DLT_PPP_SERIAL to WTAP_ENCAP_PPP, as
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* we treat WTAP_ENCAP_PPP packets as if those beginning with
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* 0xff have the standard RFC 1662 "PPP in HDLC-like Framing"
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* 0xff 0x03 address/control header, and DLT_PPP_SERIAL frames
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* appear to contain that unless they're Cisco frames (if we
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* ever see a capture with them, we'd need to implement the
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* RFC 1547 stuff, and the keepalive protocol stuff).
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*
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* We may have to distinguish between "PPP where if it doesn't
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* begin with 0xff there's no HDLC encapsulation and the frame
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* begins with the protocol field" (which is how we handle
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* WTAP_ENCAP_PPP now) and "PPP where there's either HDLC
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* encapsulation or Cisco PPP" (which is what DLT_PPP_SERIAL
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* is) at some point.
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*
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* XXX - NetBSD has DLT_HDLC, which appears to be used for
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* Cisco HDLC. Ideally, they should use DLT_PPP_SERIAL
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* only for real live HDLC-encapsulated PPP, not for Cisco
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* HDLC.
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*/
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{ 50, WTAP_ENCAP_PPP },
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/*
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* Apparently used by the Axent Raptor firewall (now Symantec
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* Enterprise Firewall).
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* Thanks, Axent, for not reserving that type with tcpdump.org
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* and not telling anybody about it.
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*/
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{ 99, WTAP_ENCAP_SYMANTEC },
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/*
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* These are the values that libpcap 0.5 and later use in
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* capture file headers, in an attempt to work around the
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* confusion decried above, and that Wiretap and Wireshark
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* currently support.
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*/
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{ 100, WTAP_ENCAP_ATM_RFC1483 },
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{ 101, WTAP_ENCAP_RAW_IP },
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#if 0
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/*
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* More values used by libpcap 0.5 as DLT_ values and used by the
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* current CVS version of libpcap in capture file headers.
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* They are not yet handled in Wireshark.
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* If we get a capture that contains them, we'll implement them.
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*/
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{ 102, WTAP_ENCAP_SLIP_BSDOS },
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{ 103, WTAP_ENCAP_PPP_BSDOS },
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#endif
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/*
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* These ones are handled in Wireshark, though.
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*/
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{ 104, WTAP_ENCAP_CHDLC }, /* Cisco HDLC */
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{ 105, WTAP_ENCAP_IEEE_802_11 }, /* IEEE 802.11 */
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{ 106, WTAP_ENCAP_LINUX_ATM_CLIP },
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{ 107, WTAP_ENCAP_FRELAY }, /* Frame Relay */
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{ 108, WTAP_ENCAP_NULL }, /* OpenBSD loopback */
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{ 109, WTAP_ENCAP_ENC }, /* OpenBSD IPSEC enc */
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#if 0
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{ 110, WTAP_ENCAP_LANE_802_3 },/* ATM LANE 802.3 */
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{ 111, WTAP_ENCAP_HIPPI }, /* NetBSD HIPPI */
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#endif
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{ 112, WTAP_ENCAP_CHDLC }, /* NetBSD HDLC framing */
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/*
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* Linux "cooked mode" captures, used by the current CVS version
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* of libpcap
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* OR
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* it could be a packet in Cisco's ERSPAN encapsulation which uses
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* this number as well (why can't people stick to protocols when it
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* comes to allocating/using DLT types).
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*/
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{ 113, WTAP_ENCAP_SLL }, /* Linux cooked capture */
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{ 114, WTAP_ENCAP_LOCALTALK }, /* Localtalk */
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/*
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* The tcpdump.org version of libpcap uses 117, rather than 17,
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* for OpenBSD packet filter logging, so as to avoid conflicting
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* with DLT_LANE8023 in SuSE 6.3 libpcap.
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*/
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{ 117, WTAP_ENCAP_PFLOG },
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{ 118, WTAP_ENCAP_CISCO_IOS },
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{ 119, WTAP_ENCAP_PRISM_HEADER }, /* Prism monitor mode hdr */
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{ 121, WTAP_ENCAP_HHDLC }, /* HiPath HDLC */
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{ 122, WTAP_ENCAP_IP_OVER_FC }, /* RFC 2625 IP-over-FC */
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{ 123, WTAP_ENCAP_ATM_PDUS }, /* SunATM */
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{ 127, WTAP_ENCAP_IEEE_802_11_WLAN_RADIOTAP }, /* 802.11 plus radiotap WLAN header */
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{ 128, WTAP_ENCAP_TZSP }, /* Tazmen Sniffer Protocol */
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{ 129, WTAP_ENCAP_ARCNET_LINUX },
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{ 130, WTAP_ENCAP_JUNIPER_MLPPP }, /* Juniper MLPPP on ML-, LS-, AS- PICs */
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{ 131, WTAP_ENCAP_JUNIPER_MLFR }, /* Juniper MLFR (FRF.15) on ML-, LS-, AS- PICs */
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{ 133, WTAP_ENCAP_JUNIPER_GGSN},
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/*
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* Values 132-134, 136 not listed here are reserved for use
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* in Juniper hardware.
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*/
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{ 135, WTAP_ENCAP_JUNIPER_ATM2 }, /* various encapsulations captured on the ATM2 PIC */
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{ 137, WTAP_ENCAP_JUNIPER_ATM1 }, /* various encapsulations captured on the ATM1 PIC */
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{ 138, WTAP_ENCAP_APPLE_IP_OVER_IEEE1394 },
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/* Apple IP-over-IEEE 1394 */
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{ 139, WTAP_ENCAP_MTP2_WITH_PHDR },
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{ 140, WTAP_ENCAP_MTP2 },
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{ 141, WTAP_ENCAP_MTP3 },
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{ 142, WTAP_ENCAP_SCCP },
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{ 143, WTAP_ENCAP_DOCSIS },
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{ 144, WTAP_ENCAP_IRDA }, /* IrDA capture */
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/* Reserved for private use. */
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{ 147, WTAP_ENCAP_USER0 },
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{ 148, WTAP_ENCAP_USER1 },
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{ 149, WTAP_ENCAP_USER2 },
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{ 150, WTAP_ENCAP_USER3 },
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{ 151, WTAP_ENCAP_USER4 },
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{ 152, WTAP_ENCAP_USER5 },
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{ 153, WTAP_ENCAP_USER6 },
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{ 154, WTAP_ENCAP_USER7 },
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{ 155, WTAP_ENCAP_USER8 },
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{ 156, WTAP_ENCAP_USER9 },
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{ 157, WTAP_ENCAP_USER10 },
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{ 158, WTAP_ENCAP_USER11 },
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{ 159, WTAP_ENCAP_USER12 },
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{ 160, WTAP_ENCAP_USER13 },
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{ 161, WTAP_ENCAP_USER14 },
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{ 162, WTAP_ENCAP_USER15 },
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{ 163, WTAP_ENCAP_IEEE_802_11_WLAN_AVS }, /* 802.11 plus AVS WLAN header */
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/*
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* 164 is reserved for Juniper-private chassis-internal
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* meta-information such as QoS profiles, etc..
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*/
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{ 165, WTAP_ENCAP_BACNET_MS_TP },
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/*
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* 166 is reserved for a PPP variant in which the first byte
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* of the 0xff03 header, the 0xff, is replaced by a direction
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* byte. I don't know whether any captures look like that,
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* but it is used for some Linux IP filtering (ipfilter?).
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*/
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/* Ethernet PPPoE frames captured on a service PIC */
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{ 167, WTAP_ENCAP_JUNIPER_PPPOE },
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/*
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* 168 is reserved for more Juniper private-chassis-
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* internal meta-information.
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*/
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{ 169, WTAP_ENCAP_GPRS_LLC },
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/*
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* 170 and 171 are reserved for ITU-T G.7041/Y.1303 Generic
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* Framing Procedure.
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*/
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/* Registered by Gcom, Inc. */
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{ 172, WTAP_GCOM_TIE1 },
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{ 173, WTAP_GCOM_SERIAL },
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{ 177, WTAP_ENCAP_LINUX_LAPD },
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/* Ethernet frames prepended with meta-information */
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{ 178, WTAP_ENCAP_JUNIPER_ETHER },
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/* PPP frames prepended with meta-information */
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{ 179, WTAP_ENCAP_JUNIPER_PPP },
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/* Frame-Relay frames prepended with meta-information */
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{ 180, WTAP_ENCAP_JUNIPER_FRELAY },
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/* C-HDLC frames prepended with meta-information */
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{ 181, WTAP_ENCAP_JUNIPER_CHDLC },
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/* VOIP Frames prepended with meta-information */
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{ 183, WTAP_ENCAP_JUNIPER_VP },
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/* raw USB packets */
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{ 186, WTAP_ENCAP_USB },
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/* Bluetooth HCI UART transport (part H:4) frames, like hcidump */
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{ 187, WTAP_ENCAP_BLUETOOTH_H4 },
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/* IEEE 802.16 MAC Common Part Sublayer */
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{ 188, WTAP_ENCAP_IEEE802_16_MAC_CPS },
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/* USB packets with Linux-specified header */
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{ 189, WTAP_ENCAP_USB_LINUX },
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/* CAN 2.0b frame */
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{ 190, WTAP_ENCAP_CAN20B },
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/* Per-Packet Information header */
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{ 192, WTAP_ENCAP_PPI },
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/* IEEE 802.15.4 Wireless PAN */
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{ 195, WTAP_ENCAP_IEEE802_15_4 },
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|
|
/* SITA File Encapsulation */
|
|
|
|
{ 196, WTAP_ENCAP_SITA },
|
|
|
|
/* Endace Record File Encapsulation */
|
|
|
|
{ 197, WTAP_ENCAP_ERF },
|
|
|
|
/* IPMB */
|
|
|
|
{ 199, WTAP_ENCAP_IPMB },
|
|
|
|
/* Bluetooth HCI UART transport (part H:4) frames, like hcidump */
|
|
|
|
{ 201, WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR },
|
2009-06-28 18:22:15 +00:00
|
|
|
{ 204, WTAP_ENCAP_PPP_WITH_PHDR },
|
2009-04-27 09:28:28 +00:00
|
|
|
/* IPMB/I2C */
|
|
|
|
{ 209, WTAP_ENCAP_I2C },
|
|
|
|
/* FlexRay frame */
|
|
|
|
{ 210, WTAP_ENCAP_FLEXRAY },
|
|
|
|
/* MOST frame */
|
|
|
|
{ 211, WTAP_ENCAP_MOST },
|
|
|
|
/* LIN frame */
|
|
|
|
{ 212, WTAP_ENCAP_LIN },
|
|
|
|
/* X2E Xoraya serial frame */
|
|
|
|
{ 213, WTAP_ENCAP_X2E_SERIAL },
|
|
|
|
/* X2E Xoraya frame */
|
|
|
|
{ 214, WTAP_ENCAP_X2E_XORAYA },
|
|
|
|
/* IEEE 802.15.4 Wireless PAN non-ASK PHY */
|
|
|
|
{ 215, WTAP_ENCAP_IEEE802_15_4_NONASK_PHY },
|
|
|
|
/* USB packets with padded Linux-specified header */
|
|
|
|
{ 220, WTAP_ENCAP_USB_LINUX_MMAPPED },
|
2009-07-16 10:45:14 +00:00
|
|
|
/* Fibre Channel FC-2 frame */
|
|
|
|
{ 224, WTAP_ENCAP_FIBRE_CHANNEL_FC2 },
|
2009-08-23 19:16:35 +00:00
|
|
|
/* Fibre Channel FC-2 frame with Delimiter */
|
|
|
|
{ 225, WTAP_ENCAP_FIBRE_CHANNEL_FC2_WITH_FRAME_DELIMS },
|
2009-12-03 15:27:39 +00:00
|
|
|
/* Solaris DLPI */
|
|
|
|
{ 226, WTAP_ENCAP_IPNET },
|
2009-04-27 09:28:28 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* To repeat:
|
|
|
|
*
|
|
|
|
* If you need a new encapsulation type for libpcap files, do
|
|
|
|
* *N*O*T* use *ANY* of the values listed here! I.e., do *NOT*
|
|
|
|
* add a new encapsulation type by changing an existing entry;
|
|
|
|
* leave the existing entries alone.
|
|
|
|
*
|
|
|
|
* Instead, send mail to tcpdump-workers@lists.tcpdump.org, asking
|
|
|
|
* for a new DLT_ value, and specifying the purpose of the new value.
|
|
|
|
* When you get the new DLT_ value, use that numerical value in
|
|
|
|
* the "dlt_value" field of "pcap_to_wtap_map[]".
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The following are entries for libpcap type values that have
|
|
|
|
* different meanings on different OSes.
|
|
|
|
*
|
|
|
|
* We put these *after* the entries for the platform-independent
|
|
|
|
* libpcap type values for those Wiretap encapsulation types, so
|
|
|
|
* that Wireshark chooses the platform-independent libpcap type
|
|
|
|
* value for those encapsulatioin types, not the platform-dependent
|
|
|
|
* one.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 11 is DLT_ATM_RFC1483 on most platforms; the only libpcaps I've
|
|
|
|
* seen that define anything other than DLT_ATM_RFC1483 as 11 are
|
|
|
|
* the BSD/OS one, which defines DLT_FR as 11, and libpcap 0.5,
|
|
|
|
* which define it as 100, mapping the kernel's value to 100, in
|
|
|
|
* an attempt to hide the different values used on different
|
|
|
|
* platforms.
|
|
|
|
*
|
|
|
|
* If this is a platform where DLT_FR is defined as 11, we
|
|
|
|
* don't handle 11 at all; otherwise, we handle it as
|
|
|
|
* DLT_ATM_RFC1483 (this means we'd misinterpret Frame Relay
|
|
|
|
* captures from BSD/OS if running on platforms other than BSD/OS,
|
|
|
|
* but
|
|
|
|
*
|
|
|
|
* 1) we don't yet support DLT_FR
|
|
|
|
*
|
|
|
|
* and
|
|
|
|
*
|
|
|
|
* 2) nothing short of a heuristic would let us interpret
|
|
|
|
* them correctly).
|
|
|
|
*/
|
|
|
|
#if defined(DLT_FR) && (DLT_FR == 11)
|
|
|
|
{ 11, WTAP_ENCAP_FRELAY },
|
|
|
|
#else
|
|
|
|
{ 11, WTAP_ENCAP_ATM_RFC1483 },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 12 is DLT_RAW on most platforms, but it's DLT_C_HDLC on
|
|
|
|
* BSD/OS, and DLT_LOOP on OpenBSD.
|
|
|
|
*
|
|
|
|
* We don't yet handle DLT_C_HDLC, but we can handle DLT_LOOP
|
|
|
|
* (it's just like DLT_NULL, only with the AF_ value in network
|
|
|
|
* rather than host byte order - Wireshark figures out the
|
|
|
|
* byte order from the data, so we don't care what byte order
|
|
|
|
* it's in), so if DLT_LOOP is defined as 12, interpret 12
|
|
|
|
* as WTAP_ENCAP_NULL, otherwise, unless DLT_C_HDLC is defined
|
|
|
|
* as 12, interpret it as WTAP_ENCAP_RAW_IP.
|
|
|
|
*/
|
|
|
|
#if defined(DLT_LOOP) && (DLT_LOOP == 12)
|
|
|
|
{ 12, WTAP_ENCAP_NULL },
|
|
|
|
#elif defined(DLT_C_HDLC) && (DLT_C_HDLC == 12)
|
|
|
|
/*
|
|
|
|
* Put entry for Cisco HDLC here.
|
|
|
|
* XXX - is this just WTAP_ENCAP_CHDLC, i.e. does the frame
|
|
|
|
* start with a 4-byte Cisco HDLC header?
|
|
|
|
*/
|
|
|
|
#else
|
|
|
|
{ 12, WTAP_ENCAP_RAW_IP },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 13 is DLT_SLIP_BSDOS on FreeBSD and NetBSD, but those OSes
|
|
|
|
* don't actually generate it. I infer that BSD/OS translates
|
|
|
|
* DLT_SLIP from the kernel BPF code to DLT_SLIP_BSDOS in
|
|
|
|
* libpcap, as the BSD/OS link-layer header is different;
|
|
|
|
* however, in BSD/OS, DLT_SLIP_BSDOS is 15.
|
|
|
|
*
|
|
|
|
* From this, I infer that there's no point in handling 13
|
|
|
|
* as DLT_SLIP_BSDOS.
|
|
|
|
*
|
|
|
|
* 13 is DLT_ATM_RFC1483 on BSD/OS.
|
|
|
|
*
|
|
|
|
* 13 is DLT_ENC in OpenBSD, which is, I suspect, some kind
|
2009-09-25 21:55:39 +00:00
|
|
|
* of decrypted IPsec traffic.
|
|
|
|
*
|
|
|
|
* We treat 13 as WTAP_ENCAP_ENC on all systems except those
|
|
|
|
* that define DLT_ATM_RFC1483 as 13 - presumably only
|
|
|
|
* BSD/OS does so - so that, on BSD/OS systems, we still
|
|
|
|
* treate 13 as WTAP_ENCAP_ATM_RFC1483, but, on all other
|
|
|
|
* systems, we can read OpenBSD DLT_ENC captures.
|
2009-04-27 09:28:28 +00:00
|
|
|
*/
|
|
|
|
#if defined(DLT_ATM_RFC1483) && (DLT_ATM_RFC1483 == 13)
|
|
|
|
{ 13, WTAP_ENCAP_ATM_RFC1483 },
|
2009-09-25 21:55:39 +00:00
|
|
|
#else
|
2009-04-27 09:28:28 +00:00
|
|
|
{ 13, WTAP_ENCAP_ENC },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 14 is DLT_PPP_BSDOS on FreeBSD and NetBSD, but those OSes
|
|
|
|
* don't actually generate it. I infer that BSD/OS translates
|
|
|
|
* DLT_PPP from the kernel BPF code to DLT_PPP_BSDOS in
|
|
|
|
* libpcap, as the BSD/OS link-layer header is different;
|
|
|
|
* however, in BSD/OS, DLT_PPP_BSDOS is 16.
|
|
|
|
*
|
|
|
|
* From this, I infer that there's no point in handling 14
|
|
|
|
* as DLT_PPP_BSDOS.
|
|
|
|
*
|
|
|
|
* 14 is DLT_RAW on BSD/OS and OpenBSD.
|
|
|
|
*/
|
|
|
|
{ 14, WTAP_ENCAP_RAW_IP },
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 15 is:
|
|
|
|
*
|
|
|
|
* DLT_SLIP_BSDOS on BSD/OS;
|
|
|
|
*
|
|
|
|
* DLT_HIPPI on NetBSD;
|
|
|
|
*
|
|
|
|
* DLT_LANE8023 with Alexey Kuznetzov's patches for
|
|
|
|
* Linux libpcap;
|
|
|
|
*
|
|
|
|
* DLT_I4L_RAWIP with the ISDN4Linux patches for libpcap
|
|
|
|
* (and on SuSE 6.3);
|
|
|
|
*
|
|
|
|
* but we don't currently handle any of those.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 16 is:
|
|
|
|
*
|
|
|
|
* DLT_PPP_BSDOS on BSD/OS;
|
|
|
|
*
|
|
|
|
* DLT_HDLC on NetBSD (Cisco HDLC);
|
|
|
|
*
|
|
|
|
* DLT_CIP with Alexey Kuznetzov's patches for
|
|
|
|
* Linux libpcap - this is WTAP_ENCAP_LINUX_ATM_CLIP;
|
|
|
|
*
|
|
|
|
* DLT_I4L_IP with the ISDN4Linux patches for libpcap
|
|
|
|
* (and on SuSE 6.3).
|
|
|
|
*/
|
|
|
|
#if defined(DLT_CIP) && (DLT_CIP == 16)
|
|
|
|
{ 16, WTAP_ENCAP_LINUX_ATM_CLIP },
|
|
|
|
#endif
|
|
|
|
#if defined(DLT_HDLC) && (DLT_HDLC == 16)
|
|
|
|
{ 16, WTAP_ENCAP_CHDLC },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 17 is DLT_LANE8023 in SuSE 6.3 libpcap; we don't currently
|
|
|
|
* handle it.
|
|
|
|
* It is also used as the PF (Packet Filter) logging format beginning
|
|
|
|
* with OpenBSD 3.0; we use 17 for PF logs unless DLT_LANE8023 is
|
|
|
|
* defined with the value 17.
|
|
|
|
*/
|
|
|
|
#if !defined(DLT_LANE8023) || (DLT_LANE8023 != 17)
|
|
|
|
{ 17, WTAP_ENCAP_OLD_PFLOG },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 18 is DLT_CIP in SuSE 6.3 libpcap; if it's the same as the
|
|
|
|
* DLT_CIP of 16 that the Alexey Kuznetzov patches for
|
|
|
|
* libpcap/tcpdump define, it's WTAP_ENCAP_LINUX_ATM_CLIP.
|
|
|
|
* I've not found any libpcap that uses it for any other purpose -
|
|
|
|
* hopefully nobody will do so in the future.
|
|
|
|
*/
|
|
|
|
{ 18, WTAP_ENCAP_LINUX_ATM_CLIP },
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 19 is DLT_ATM_CLIP in the libpcap/tcpdump patches in the
|
|
|
|
* recent versions I've seen of the Linux ATM distribution;
|
|
|
|
* I've not yet found any libpcap that uses it for any other
|
|
|
|
* purpose - hopefully nobody will do so in the future.
|
|
|
|
*/
|
|
|
|
{ 19, WTAP_ENCAP_LINUX_ATM_CLIP },
|
|
|
|
|
|
|
|
/*
|
|
|
|
* To repeat:
|
|
|
|
*
|
|
|
|
* If you need a new encapsulation type for libpcap files, do
|
|
|
|
* *N*O*T* use *ANY* of the values listed here! I.e., do *NOT*
|
|
|
|
* add a new encapsulation type by changing an existing entry;
|
|
|
|
* leave the existing entries alone.
|
|
|
|
*
|
|
|
|
* Instead, send mail to tcpdump-workers@lists.tcpdump.org, asking
|
|
|
|
* for a new DLT_ value, and specifying the purpose of the new value.
|
|
|
|
* When you get the new DLT_ value, use that numerical value in
|
|
|
|
* the "dlt_value" field of "pcap_to_wtap_map[]".
|
|
|
|
*/
|
|
|
|
};
|
|
|
|
#define NUM_PCAP_ENCAPS (sizeof pcap_to_wtap_map / sizeof pcap_to_wtap_map[0])
|
|
|
|
|
|
|
|
int
|
|
|
|
wtap_pcap_encap_to_wtap_encap(int encap)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (i = 0; i < NUM_PCAP_ENCAPS; i++) {
|
|
|
|
if (pcap_to_wtap_map[i].dlt_value == encap)
|
|
|
|
return pcap_to_wtap_map[i].wtap_encap_value;
|
|
|
|
}
|
|
|
|
return WTAP_ENCAP_UNKNOWN;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
wtap_wtap_encap_to_pcap_encap(int encap)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
switch (encap) {
|
|
|
|
|
|
|
|
case WTAP_ENCAP_FDDI:
|
|
|
|
case WTAP_ENCAP_FDDI_BITSWAPPED:
|
|
|
|
case WTAP_ENCAP_NETTL_FDDI:
|
|
|
|
/*
|
|
|
|
* Special-case WTAP_ENCAP_FDDI and
|
|
|
|
* WTAP_ENCAP_FDDI_BITSWAPPED; both of them get mapped
|
|
|
|
* to DLT_FDDI (even though that may mean that the bit
|
|
|
|
* order in the FDDI MAC addresses is wrong; so it goes
|
|
|
|
* - libpcap format doesn't record the byte order,
|
|
|
|
* so that's not fixable).
|
|
|
|
*/
|
|
|
|
return 10; /* that's DLT_FDDI */
|
|
|
|
|
|
|
|
case WTAP_ENCAP_FRELAY_WITH_PHDR:
|
|
|
|
/*
|
|
|
|
* Do the same with Frame Relay.
|
|
|
|
*/
|
|
|
|
return 107;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_IEEE_802_11_WITH_RADIO:
|
|
|
|
/*
|
|
|
|
* Map this to DLT_IEEE802_11, for now, even though
|
|
|
|
* that means the radio information will be lost.
|
|
|
|
* Once tcpdump support for the BSD radiotap header
|
|
|
|
* is sufficiently widespread, we should probably
|
|
|
|
* use that, instead - although we should probably
|
|
|
|
* ultimately just have WTAP_ENCAP_IEEE_802_11
|
|
|
|
* as the only Wiretap encapsulation for 802.11,
|
|
|
|
* and have the pseudo-header include a radiotap-style
|
|
|
|
* list of attributes. If we do that, though, we
|
|
|
|
* should probably bypass the regular Wiretap code
|
|
|
|
* when writing out packets during a capture, and just
|
|
|
|
* do the equivalent of a libpcap write (unfortunately,
|
|
|
|
* libpcap doesn't have an "open dump by file descriptor"
|
|
|
|
* function, so we can't just use "pcap_dump()"), so
|
|
|
|
* that we don't spend cycles mapping from libpcap to
|
|
|
|
* Wiretap and then back to libpcap. (There are other
|
|
|
|
* reasons to do that, e.g. to handle AIX libpcap better.)
|
|
|
|
*/
|
|
|
|
return 105;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < NUM_PCAP_ENCAPS; i++) {
|
|
|
|
if (pcap_to_wtap_map[i].wtap_encap_value == encap)
|
|
|
|
return pcap_to_wtap_map[i].dlt_value;
|
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
2009-04-27 19:39:06 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Various pseudo-headers that appear at the beginning of packet data.
|
|
|
|
*
|
|
|
|
* We represent them as sets of offsets, as they might not be aligned on
|
|
|
|
* an appropriate structure boundary in the buffer, and as that makes them
|
|
|
|
* independent of the way the compiler might align fields.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The link-layer header on SunATM packets.
|
|
|
|
*/
|
|
|
|
#define SUNATM_FLAGS 0 /* destination and traffic type - 1 byte */
|
|
|
|
#define SUNATM_VPI 1 /* VPI - 1 byte */
|
|
|
|
#define SUNATM_VCI 2 /* VCI - 2 bytes */
|
|
|
|
#define SUNATM_LEN 4 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The link-layer header on Nokia IPSO ATM packets.
|
|
|
|
*/
|
|
|
|
#define NOKIAATM_FLAGS 0 /* destination - 1 byte */
|
|
|
|
#define NOKIAATM_VPI 1 /* VPI - 1 byte */
|
|
|
|
#define NOKIAATM_VCI 2 /* VCI - 2 bytes */
|
|
|
|
#define NOKIAATM_LEN 4 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The fake link-layer header of IrDA packets as introduced by Jean Tourrilhes
|
|
|
|
* to libpcap.
|
|
|
|
*/
|
|
|
|
#define IRDA_SLL_PKTTYPE_OFFSET 0 /* packet type - 2 bytes */
|
|
|
|
/* 12 unused bytes */
|
|
|
|
#define IRDA_SLL_PROTOCOL_OFFSET 14 /* protocol, should be ETH_P_LAPD - 2 bytes */
|
|
|
|
#define IRDA_SLL_LEN 16 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A header containing additional MTP information.
|
|
|
|
*/
|
|
|
|
#define MTP2_SENT_OFFSET 0 /* 1 byte */
|
|
|
|
#define MTP2_ANNEX_A_USED_OFFSET 1 /* 1 byte */
|
|
|
|
#define MTP2_LINK_NUMBER_OFFSET 2 /* 2 bytes */
|
|
|
|
#define MTP2_HDR_LEN 4 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A header containing additional SITA WAN information.
|
|
|
|
*/
|
|
|
|
#define SITA_FLAGS_OFFSET 0 /* 1 byte */
|
|
|
|
#define SITA_SIGNALS_OFFSET 1 /* 1 byte */
|
|
|
|
#define SITA_ERRORS1_OFFSET 2 /* 1 byte */
|
|
|
|
#define SITA_ERRORS2_OFFSET 3 /* 1 byte */
|
|
|
|
#define SITA_PROTO_OFFSET 4 /* 1 byte */
|
|
|
|
#define SITA_HDR_LEN 5 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The fake link-layer header of LAPD packets.
|
|
|
|
*/
|
|
|
|
#ifndef ETH_P_LAPD
|
|
|
|
#define ETH_P_LAPD 0x0030
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define LAPD_SLL_PKTTYPE_OFFSET 0 /* packet type - 2 bytes */
|
|
|
|
#define LAPD_SLL_HATYPE_OFFSET 2 /* hardware address type - 2 bytes */
|
|
|
|
#define LAPD_SLL_HALEN_OFFSET 4 /* hardware address length - 2 bytes */
|
|
|
|
#define LAPD_SLL_ADDR_OFFSET 6 /* address - 8 bytes */
|
|
|
|
#define LAPD_SLL_PROTOCOL_OFFSET 14 /* protocol, should be ETH_P_LAPD - 2 bytes */
|
|
|
|
#define LAPD_SLL_LEN 16 /* length of the header */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* I2C link-layer on-disk format
|
|
|
|
*/
|
|
|
|
struct i2c_file_hdr {
|
|
|
|
guint8 bus;
|
|
|
|
guint8 flags[4];
|
|
|
|
};
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_sunatm_pseudoheader(FILE_T fh,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err)
|
|
|
|
{
|
|
|
|
guint8 atm_phdr[SUNATM_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
guint8 vpi;
|
|
|
|
guint16 vci;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(atm_phdr, 1, SUNATM_LEN, fh);
|
|
|
|
if (bytes_read != SUNATM_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
vpi = atm_phdr[SUNATM_VPI];
|
|
|
|
vci = pntohs(&atm_phdr[SUNATM_VCI]);
|
|
|
|
|
|
|
|
switch (atm_phdr[SUNATM_FLAGS] & 0x0F) {
|
|
|
|
|
|
|
|
case 0x01: /* LANE */
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_LANE;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x02: /* RFC 1483 LLC multiplexed traffic */
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_LLCMX;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x05: /* ILMI */
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_ILMI;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x06: /* Q.2931 */
|
|
|
|
pseudo_header->atm.aal = AAL_SIGNALLING;
|
|
|
|
pseudo_header->atm.type = TRAF_UNKNOWN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x03: /* MARS (RFC 2022) */
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_UNKNOWN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0x04: /* IFMP (Ipsilon Flow Management Protocol; see RFC 1954) */
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_UNKNOWN; /* XXX - TRAF_IPSILON? */
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* Assume it's AAL5, unless it's VPI 0 and VCI 5, in which
|
|
|
|
* case assume it's AAL_SIGNALLING; we know nothing more
|
|
|
|
* about it.
|
|
|
|
*
|
|
|
|
* XXX - is this necessary? Or are we guaranteed that
|
|
|
|
* all signalling traffic has a type of 0x06?
|
|
|
|
*
|
|
|
|
* XXX - is this guaranteed to be AAL5? Or, if the type is
|
|
|
|
* 0x00 ("raw"), might it be non-AAL5 traffic?
|
|
|
|
*/
|
|
|
|
if (vpi == 0 && vci == 5)
|
|
|
|
pseudo_header->atm.aal = AAL_SIGNALLING;
|
|
|
|
else
|
|
|
|
pseudo_header->atm.aal = AAL_5;
|
|
|
|
pseudo_header->atm.type = TRAF_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
pseudo_header->atm.subtype = TRAF_ST_UNKNOWN;
|
|
|
|
|
|
|
|
pseudo_header->atm.vpi = vpi;
|
|
|
|
pseudo_header->atm.vci = vci;
|
|
|
|
pseudo_header->atm.channel = (atm_phdr[SUNATM_FLAGS] & 0x80) ? 0 : 1;
|
|
|
|
|
|
|
|
/* We don't have this information */
|
|
|
|
pseudo_header->atm.flags = 0;
|
|
|
|
pseudo_header->atm.cells = 0;
|
|
|
|
pseudo_header->atm.aal5t_u2u = 0;
|
|
|
|
pseudo_header->atm.aal5t_len = 0;
|
|
|
|
pseudo_header->atm.aal5t_chksum = 0;
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_nokiaatm_pseudoheader(FILE_T fh,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err)
|
|
|
|
{
|
|
|
|
guint8 atm_phdr[NOKIAATM_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
guint8 vpi;
|
|
|
|
guint16 vci;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(atm_phdr, 1, NOKIAATM_LEN, fh);
|
|
|
|
if (bytes_read != NOKIAATM_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
vpi = atm_phdr[NOKIAATM_VPI];
|
|
|
|
vci = pntohs(&atm_phdr[NOKIAATM_VCI]);
|
|
|
|
|
|
|
|
pseudo_header->atm.vpi = vpi;
|
|
|
|
pseudo_header->atm.vci = vci;
|
|
|
|
pseudo_header->atm.channel = (atm_phdr[NOKIAATM_FLAGS] & 0x80) ? 0 : 1;
|
|
|
|
|
|
|
|
/* We don't have this information */
|
|
|
|
pseudo_header->atm.flags = 0;
|
|
|
|
pseudo_header->atm.cells = 0;
|
|
|
|
pseudo_header->atm.aal5t_u2u = 0;
|
|
|
|
pseudo_header->atm.aal5t_len = 0;
|
|
|
|
pseudo_header->atm.aal5t_chksum = 0;
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_irda_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header,
|
|
|
|
int *err, gchar **err_info)
|
|
|
|
{
|
|
|
|
guint8 irda_phdr[IRDA_SLL_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(irda_phdr, 1, IRDA_SLL_LEN, fh);
|
|
|
|
if (bytes_read != IRDA_SLL_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pntohs(&irda_phdr[IRDA_SLL_PROTOCOL_OFFSET]) != 0x0017) {
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
|
|
|
if (err_info != NULL)
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup("libpcap: IrDA capture has a packet with an invalid sll_protocol field");
|
2009-04-27 19:39:06 +00:00
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
pseudo_header->irda.pkttype = pntohs(&irda_phdr[IRDA_SLL_PKTTYPE_OFFSET]);
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_mtp2_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header, int *err, gchar **err_info _U_)
|
|
|
|
{
|
|
|
|
guint8 mtp2_hdr[MTP2_HDR_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(mtp2_hdr, 1, MTP2_HDR_LEN, fh);
|
|
|
|
if (bytes_read != MTP2_HDR_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
pseudo_header->mtp2.sent = mtp2_hdr[MTP2_SENT_OFFSET];
|
|
|
|
pseudo_header->mtp2.annex_a_used = mtp2_hdr[MTP2_ANNEX_A_USED_OFFSET];
|
|
|
|
pseudo_header->mtp2.link_number = pntohs(&mtp2_hdr[MTP2_LINK_NUMBER_OFFSET]);
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_lapd_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header,
|
|
|
|
int *err, gchar **err_info)
|
|
|
|
{
|
|
|
|
guint8 lapd_phdr[LAPD_SLL_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(lapd_phdr, 1, LAPD_SLL_LEN, fh);
|
|
|
|
if (bytes_read != LAPD_SLL_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pntohs(&lapd_phdr[LAPD_SLL_PROTOCOL_OFFSET]) != ETH_P_LAPD) {
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
|
|
|
if (err_info != NULL)
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup("libpcap: LAPD capture has a packet with an invalid sll_protocol field");
|
2009-04-27 19:39:06 +00:00
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
pseudo_header->lapd.pkttype = pntohs(&lapd_phdr[LAPD_SLL_PKTTYPE_OFFSET]);
|
|
|
|
pseudo_header->lapd.we_network = !!lapd_phdr[LAPD_SLL_ADDR_OFFSET+0];
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_sita_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header, int *err, gchar **err_info _U_)
|
|
|
|
{
|
|
|
|
guint8 sita_phdr[SITA_HDR_LEN];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(sita_phdr, 1, SITA_HDR_LEN, fh);
|
|
|
|
if (bytes_read != SITA_HDR_LEN) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
pseudo_header->sita.flags = sita_phdr[SITA_FLAGS_OFFSET];
|
|
|
|
pseudo_header->sita.signals = sita_phdr[SITA_SIGNALS_OFFSET];
|
|
|
|
pseudo_header->sita.errors1 = sita_phdr[SITA_ERRORS1_OFFSET];
|
|
|
|
pseudo_header->sita.errors2 = sita_phdr[SITA_ERRORS2_OFFSET];
|
|
|
|
pseudo_header->sita.proto = sita_phdr[SITA_PROTO_OFFSET];
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
2009-06-27 16:08:18 +00:00
|
|
|
pcap_read_linux_usb_pseudoheader(FILE_T fh,
|
|
|
|
union wtap_pseudo_header *pseudo_header, gboolean byte_swapped, int *err)
|
2009-04-27 19:39:06 +00:00
|
|
|
{
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(&pseudo_header->linux_usb, 1,
|
|
|
|
sizeof (struct linux_usb_phdr), fh);
|
|
|
|
if (bytes_read != sizeof (struct linux_usb_phdr)) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2009-06-27 16:08:18 +00:00
|
|
|
if (byte_swapped) {
|
2009-04-27 19:39:06 +00:00
|
|
|
pseudo_header->linux_usb.id = GUINT64_SWAP_LE_BE(pseudo_header->linux_usb.id);
|
|
|
|
pseudo_header->linux_usb.bus_id = GUINT16_SWAP_LE_BE(pseudo_header->linux_usb.bus_id);
|
|
|
|
pseudo_header->linux_usb.ts_sec = GUINT64_SWAP_LE_BE(pseudo_header->linux_usb.ts_sec);
|
|
|
|
pseudo_header->linux_usb.ts_usec = GUINT32_SWAP_LE_BE(pseudo_header->linux_usb.ts_usec);
|
|
|
|
pseudo_header->linux_usb.status = GUINT32_SWAP_LE_BE(pseudo_header->linux_usb.status);
|
|
|
|
pseudo_header->linux_usb.urb_len = GUINT32_SWAP_LE_BE(pseudo_header->linux_usb.urb_len);
|
|
|
|
pseudo_header->linux_usb.data_len = GUINT32_SWAP_LE_BE(pseudo_header->linux_usb.data_len);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_bt_pseudoheader(FILE_T fh,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err)
|
|
|
|
{
|
|
|
|
int bytes_read;
|
|
|
|
struct libpcap_bt_phdr phdr;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(&phdr, 1,
|
|
|
|
sizeof (struct libpcap_bt_phdr), fh);
|
|
|
|
if (bytes_read != sizeof (struct libpcap_bt_phdr)) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
2009-05-21 23:16:49 +00:00
|
|
|
pseudo_header->p2p.sent = ((g_ntohl(phdr.direction) & LIBPCAP_BT_PHDR_RECV) == 0)? TRUE: FALSE;
|
2009-04-27 19:39:06 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2009-06-28 18:22:15 +00:00
|
|
|
static gboolean
|
|
|
|
pcap_read_ppp_pseudoheader(FILE_T fh,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err)
|
|
|
|
{
|
|
|
|
int bytes_read;
|
|
|
|
struct libpcap_ppp_phdr phdr;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(&phdr, 1,
|
|
|
|
sizeof (struct libpcap_ppp_phdr), fh);
|
|
|
|
if (bytes_read != sizeof (struct libpcap_ppp_phdr)) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
pseudo_header->p2p.sent = (phdr.direction == LIBPCAP_PPP_PHDR_SENT) ? TRUE: FALSE;
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2009-04-27 19:39:06 +00:00
|
|
|
static gboolean
|
|
|
|
pcap_read_erf_pseudoheader(FILE_T fh, struct wtap_pkthdr *whdr,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err, gchar **err_info _U_)
|
|
|
|
{
|
|
|
|
guint8 erf_hdr[sizeof(struct erf_phdr)];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(erf_hdr, 1, sizeof(struct erf_phdr), fh);
|
|
|
|
if (bytes_read != sizeof(struct erf_phdr)) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
pseudo_header->erf.phdr.ts = pletohll(&erf_hdr[0]); /* timestamp */
|
|
|
|
pseudo_header->erf.phdr.type = erf_hdr[8];
|
|
|
|
pseudo_header->erf.phdr.flags = erf_hdr[9];
|
|
|
|
pseudo_header->erf.phdr.rlen = pntohs(&erf_hdr[10]);
|
|
|
|
pseudo_header->erf.phdr.lctr = pntohs(&erf_hdr[12]);
|
|
|
|
pseudo_header->erf.phdr.wlen = pntohs(&erf_hdr[14]);
|
|
|
|
|
|
|
|
/* The high 32 bits of the timestamp contain the integer number of seconds
|
|
|
|
* while the lower 32 bits contain the binary fraction of the second.
|
|
|
|
* This allows an ultimate resolution of 1/(2^32) seconds, or approximately 233 picoseconds */
|
|
|
|
if (whdr) {
|
|
|
|
guint64 ts = pseudo_header->erf.phdr.ts;
|
|
|
|
whdr->ts.secs = (guint32) (ts >> 32);
|
|
|
|
ts = ((ts & 0xffffffff) * 1000 * 1000 * 1000);
|
|
|
|
ts += (ts & 0x80000000) << 1; /* rounding */
|
|
|
|
whdr->ts.nsecs = ((guint32) (ts >> 32));
|
|
|
|
if ( whdr->ts.nsecs >= 1000000000) {
|
|
|
|
whdr->ts.nsecs -= 1000000000;
|
|
|
|
whdr->ts.secs += 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the type of record given in the pseudo header indicate the presence of an extension
|
|
|
|
* header then, read all the extension headers
|
|
|
|
*/
|
|
|
|
static gboolean
|
|
|
|
pcap_read_erf_exheader(FILE_T fh, union wtap_pseudo_header *pseudo_header,
|
|
|
|
int *err, gchar **err_info _U_, guint * psize)
|
|
|
|
{
|
|
|
|
int bytes_read = 0;
|
|
|
|
guint8 erf_exhdr[8];
|
|
|
|
guint64 erf_exhdr_sw;
|
|
|
|
int i = 0, max = sizeof(pseudo_header->erf.ehdr_list)/sizeof(struct erf_ehdr);
|
|
|
|
guint8 type = pseudo_header->erf.phdr.type;
|
|
|
|
*psize = 0;
|
|
|
|
if (pseudo_header->erf.phdr.type & 0x80){
|
|
|
|
do{
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(erf_exhdr, 1, 8, fh);
|
|
|
|
if (bytes_read != 8 ) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
type = erf_exhdr[0];
|
|
|
|
erf_exhdr_sw = pntohll((guint64*) &(erf_exhdr[0]));
|
|
|
|
if (i < max)
|
|
|
|
memcpy(&pseudo_header->erf.ehdr_list[i].ehdr, &erf_exhdr_sw, sizeof(erf_exhdr_sw));
|
|
|
|
*psize += 8;
|
|
|
|
i++;
|
|
|
|
} while (type & 0x80);
|
|
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the type of record given in the pseudo header indicate the precense of a subheader
|
|
|
|
* then, read this optional subheader
|
|
|
|
*/
|
|
|
|
static gboolean
|
|
|
|
pcap_read_erf_subheader(FILE_T fh, union wtap_pseudo_header *pseudo_header,
|
|
|
|
int *err, gchar **err_info _U_, guint * psize)
|
|
|
|
{
|
|
|
|
guint8 erf_subhdr[sizeof(union erf_subhdr)];
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
*psize=0;
|
|
|
|
switch(pseudo_header->erf.phdr.type & 0x7F) {
|
|
|
|
case ERF_TYPE_MC_HDLC:
|
|
|
|
case ERF_TYPE_MC_RAW:
|
|
|
|
case ERF_TYPE_MC_ATM:
|
|
|
|
case ERF_TYPE_MC_RAW_CHANNEL:
|
|
|
|
case ERF_TYPE_MC_AAL5:
|
|
|
|
case ERF_TYPE_MC_AAL2:
|
|
|
|
case ERF_TYPE_COLOR_MC_HDLC_POS:
|
|
|
|
/* Extract the Multi Channel header to include it in the pseudo header part */
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(erf_subhdr, 1, sizeof(erf_mc_header_t), fh);
|
|
|
|
if (bytes_read != sizeof(erf_mc_header_t) ) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
pseudo_header->erf.subhdr.mc_hdr = pntohl(&erf_subhdr[0]);
|
|
|
|
*psize = sizeof(erf_mc_header_t);
|
|
|
|
break;
|
|
|
|
case ERF_TYPE_ETH:
|
|
|
|
case ERF_TYPE_COLOR_ETH:
|
|
|
|
case ERF_TYPE_DSM_COLOR_ETH:
|
|
|
|
/* Extract the Ethernet additional header to include it in the pseudo header part */
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(erf_subhdr, 1, sizeof(erf_eth_header_t), fh);
|
|
|
|
if (bytes_read != sizeof(erf_eth_header_t) ) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
pseudo_header->erf.subhdr.eth_hdr = pntohs(&erf_subhdr[0]);
|
|
|
|
*psize = sizeof(erf_eth_header_t);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* No optional pseudo header for this ERF type */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
pcap_read_i2c_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header, int *err, gchar **err_info _U_)
|
|
|
|
{
|
|
|
|
struct i2c_file_hdr i2c_hdr;
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
|
|
|
bytes_read = file_read(&i2c_hdr, 1, sizeof (i2c_hdr), fh);
|
|
|
|
if (bytes_read != sizeof (i2c_hdr)) {
|
|
|
|
*err = file_error(fh);
|
|
|
|
if (*err == 0)
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
pseudo_header->i2c.is_event = i2c_hdr.bus & 0x80 ? 1 : 0;
|
|
|
|
pseudo_header->i2c.bus = i2c_hdr.bus & 0x7f;
|
|
|
|
pseudo_header->i2c.flags = pntohl(&i2c_hdr.flags);
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2009-06-27 16:08:18 +00:00
|
|
|
pcap_process_pseudo_header(FILE_T fh, int file_type, int wtap_encap, gboolean bytes_swapped, guint packet_size,
|
2009-06-02 19:06:05 +00:00
|
|
|
gboolean check_packet_size, struct wtap_pkthdr *phdr,
|
|
|
|
union wtap_pseudo_header *pseudo_header, int *err, gchar **err_info)
|
2009-04-27 19:39:06 +00:00
|
|
|
{
|
|
|
|
int phdr_len = 0;
|
|
|
|
guint size;
|
|
|
|
|
2009-06-27 16:08:18 +00:00
|
|
|
switch (wtap_encap) {
|
2009-04-27 19:39:06 +00:00
|
|
|
|
|
|
|
case WTAP_ENCAP_ATM_PDUS:
|
2009-06-27 16:08:18 +00:00
|
|
|
if (file_type == WTAP_FILE_PCAP_NOKIA) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Nokia IPSO ATM.
|
|
|
|
*/
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < NOKIAATM_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: Nokia IPSO ATM file has a %u-byte packet, too small to have even an ATM pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_nokiaatm_pseudoheader(fh,
|
|
|
|
pseudo_header, err))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = NOKIAATM_LEN;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* SunATM.
|
|
|
|
*/
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < SUNATM_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: SunATM file has a %u-byte packet, too small to have even an ATM pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_sunatm_pseudoheader(fh,
|
|
|
|
pseudo_header, err))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = SUNATM_LEN;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_ETHERNET:
|
|
|
|
/*
|
|
|
|
* We don't know whether there's an FCS in this frame or not.
|
|
|
|
*/
|
|
|
|
pseudo_header->eth.fcs_len = -1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_IEEE_802_11:
|
|
|
|
case WTAP_ENCAP_PRISM_HEADER:
|
|
|
|
case WTAP_ENCAP_IEEE_802_11_WLAN_RADIOTAP:
|
|
|
|
case WTAP_ENCAP_IEEE_802_11_WLAN_AVS:
|
|
|
|
/*
|
|
|
|
* We don't know whether there's an FCS in this frame or not.
|
|
|
|
* XXX - are there any OSes where the capture mechanism
|
|
|
|
* supplies an FCS?
|
|
|
|
*/
|
|
|
|
pseudo_header->ieee_802_11.fcs_len = -1;
|
|
|
|
pseudo_header->ieee_802_11.channel = 0;
|
|
|
|
pseudo_header->ieee_802_11.data_rate = 0;
|
|
|
|
pseudo_header->ieee_802_11.signal_level = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_IRDA:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < IRDA_SLL_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: IrDA file has a %u-byte packet, too small to have even an IrDA pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_irda_pseudoheader(fh, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = IRDA_SLL_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_MTP2_WITH_PHDR:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < MTP2_HDR_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: MTP2 file has a %u-byte packet, too small to have even an MTP2 pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_mtp2_pseudoheader(fh, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = MTP2_HDR_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_LINUX_LAPD:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < LAPD_SLL_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: LAPD file has a %u-byte packet, too small to have even a LAPD pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_lapd_pseudoheader(fh, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = LAPD_SLL_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_SITA:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size && packet_size < SITA_HDR_LEN) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: SITA file has a %u-byte packet, too small to have even a SITA pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_sita_pseudoheader(fh, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = SITA_HDR_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_USB_LINUX:
|
|
|
|
case WTAP_ENCAP_USB_LINUX_MMAPPED:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size &&
|
|
|
|
packet_size < sizeof (struct linux_usb_phdr)) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: Linux USB file has a %u-byte packet, too small to have even a Linux USB pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
2009-06-27 16:08:18 +00:00
|
|
|
if (!pcap_read_linux_usb_pseudoheader(fh,
|
|
|
|
pseudo_header, bytes_swapped, err))
|
2009-04-27 19:39:06 +00:00
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = (int)sizeof (struct linux_usb_phdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_BLUETOOTH_H4:
|
|
|
|
/* We don't have pseudoheader, so just pretend we received everything. */
|
|
|
|
pseudo_header->p2p.sent = FALSE;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size &&
|
|
|
|
packet_size < sizeof (struct libpcap_bt_phdr)) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: lipcap bluetooth file has a %u-byte packet, too small to have even a pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_bt_pseudoheader(fh,
|
|
|
|
pseudo_header, err))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = (int)sizeof (struct libpcap_bt_phdr);
|
|
|
|
break;
|
|
|
|
|
2009-06-28 18:22:15 +00:00
|
|
|
case WTAP_ENCAP_PPP_WITH_PHDR:
|
|
|
|
if (check_packet_size &&
|
|
|
|
packet_size < sizeof (struct libpcap_ppp_phdr)) {
|
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
|
|
|
*err_info = g_strdup_printf("pcap: lipcap ppp file has a %u-byte packet, too small to have even a pseudo-header",
|
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_ppp_pseudoheader(fh,
|
|
|
|
pseudo_header, err))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = (int)sizeof (struct libpcap_ppp_phdr);
|
|
|
|
break;
|
|
|
|
|
2009-04-27 19:39:06 +00:00
|
|
|
case WTAP_ENCAP_ERF:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size &&
|
|
|
|
packet_size < sizeof(struct erf_phdr) ) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: ERF file has a %u-byte packet, too small to have even an ERF pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!pcap_read_erf_pseudoheader(fh, phdr, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len = (int)sizeof(struct erf_phdr);
|
|
|
|
|
|
|
|
/* check the optional Extension header */
|
|
|
|
if (!pcap_read_erf_exheader(fh, pseudo_header, err, err_info,
|
|
|
|
&size))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len += size;
|
|
|
|
|
|
|
|
/* check the optional Multi Channel header */
|
|
|
|
if (!pcap_read_erf_subheader(fh, pseudo_header, err, err_info,
|
|
|
|
&size))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
phdr_len += size;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_I2C:
|
2009-06-02 19:06:05 +00:00
|
|
|
if (check_packet_size &&
|
|
|
|
packet_size < sizeof (struct i2c_file_hdr)) {
|
2009-04-27 19:39:06 +00:00
|
|
|
/*
|
|
|
|
* Uh-oh, the packet isn't big enough to even
|
|
|
|
* have a pseudo-header.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_RECORD;
|
2009-06-02 07:18:18 +00:00
|
|
|
*err_info = g_strdup_printf("pcap: I2C file has a %u-byte packet, too small to have even a I2C pseudo-header",
|
2009-04-27 19:39:06 +00:00
|
|
|
packet_size);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!pcap_read_i2c_pseudoheader(fh, pseudo_header,
|
|
|
|
err, err_info))
|
|
|
|
return -1; /* Read error */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Don't count the pseudo-header as part of the packet.
|
|
|
|
*/
|
|
|
|
phdr_len = (int)sizeof (struct i2c_file_hdr);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return phdr_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
pcap_get_phdr_size(int encap, const union wtap_pseudo_header *pseudo_header)
|
|
|
|
{
|
|
|
|
int hdrsize;
|
|
|
|
|
|
|
|
switch (encap) {
|
|
|
|
|
|
|
|
case WTAP_ENCAP_ATM_PDUS:
|
|
|
|
hdrsize = SUNATM_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_IRDA:
|
|
|
|
hdrsize = IRDA_SLL_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_MTP2_WITH_PHDR:
|
|
|
|
hdrsize = MTP2_HDR_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_LINUX_LAPD:
|
|
|
|
hdrsize = LAPD_SLL_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_SITA:
|
|
|
|
hdrsize = SITA_HDR_LEN;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_USB_LINUX:
|
|
|
|
case WTAP_ENCAP_USB_LINUX_MMAPPED:
|
|
|
|
hdrsize = (int)sizeof (struct linux_usb_phdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_ERF:
|
|
|
|
hdrsize = (int)sizeof (struct erf_phdr);
|
|
|
|
if (pseudo_header->erf.phdr.type & 0x80)
|
|
|
|
hdrsize += 8;
|
|
|
|
switch (pseudo_header->erf.phdr.type & 0x7F) {
|
|
|
|
|
|
|
|
case ERF_TYPE_MC_HDLC:
|
|
|
|
case ERF_TYPE_MC_RAW:
|
|
|
|
case ERF_TYPE_MC_ATM:
|
|
|
|
case ERF_TYPE_MC_RAW_CHANNEL:
|
|
|
|
case ERF_TYPE_MC_AAL5:
|
|
|
|
case ERF_TYPE_MC_AAL2:
|
|
|
|
case ERF_TYPE_COLOR_MC_HDLC_POS:
|
|
|
|
hdrsize += (int)sizeof(struct erf_mc_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ERF_TYPE_ETH:
|
|
|
|
case ERF_TYPE_COLOR_ETH:
|
|
|
|
case ERF_TYPE_DSM_COLOR_ETH:
|
|
|
|
hdrsize += (int)sizeof(struct erf_eth_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_I2C:
|
|
|
|
hdrsize = (int)sizeof (struct i2c_file_hdr);
|
|
|
|
break;
|
|
|
|
|
2009-05-21 23:16:49 +00:00
|
|
|
case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR:
|
|
|
|
hdrsize = (int)sizeof (struct libpcap_bt_phdr);
|
|
|
|
break;
|
|
|
|
|
2009-06-28 18:22:15 +00:00
|
|
|
case WTAP_ENCAP_PPP_WITH_PHDR:
|
|
|
|
hdrsize = (int)sizeof (struct libpcap_ppp_phdr);
|
|
|
|
break;
|
|
|
|
|
2009-04-27 19:39:06 +00:00
|
|
|
default:
|
|
|
|
hdrsize = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return hdrsize;
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
2009-06-27 12:41:06 +00:00
|
|
|
pcap_write_phdr(wtap_dumper *wdh, int encap, const union wtap_pseudo_header *pseudo_header,
|
2009-04-27 19:39:06 +00:00
|
|
|
int *err)
|
|
|
|
{
|
|
|
|
guint8 atm_hdr[SUNATM_LEN];
|
|
|
|
guint8 irda_hdr[IRDA_SLL_LEN];
|
|
|
|
guint8 lapd_hdr[LAPD_SLL_LEN];
|
|
|
|
guint8 mtp2_hdr[MTP2_HDR_LEN];
|
|
|
|
guint8 sita_hdr[SITA_HDR_LEN];
|
|
|
|
guint8 erf_hdr[ sizeof(struct erf_mc_phdr)];
|
|
|
|
struct i2c_file_hdr i2c_hdr;
|
2009-05-21 23:16:49 +00:00
|
|
|
struct libpcap_bt_phdr bt_hdr;
|
2009-06-28 18:22:15 +00:00
|
|
|
struct libpcap_ppp_phdr ppp_hdr;
|
2009-04-27 19:39:06 +00:00
|
|
|
size_t nwritten;
|
|
|
|
size_t size;
|
|
|
|
|
2009-06-27 12:41:06 +00:00
|
|
|
switch (encap) {
|
2009-04-27 19:39:06 +00:00
|
|
|
|
|
|
|
case WTAP_ENCAP_ATM_PDUS:
|
|
|
|
/*
|
|
|
|
* Write the ATM header.
|
|
|
|
*/
|
|
|
|
atm_hdr[SUNATM_FLAGS] =
|
|
|
|
(pseudo_header->atm.channel == 0) ? 0x80 : 0x00;
|
|
|
|
switch (pseudo_header->atm.aal) {
|
|
|
|
|
|
|
|
case AAL_SIGNALLING:
|
|
|
|
/* Q.2931 */
|
|
|
|
atm_hdr[SUNATM_FLAGS] |= 0x06;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AAL_5:
|
|
|
|
switch (pseudo_header->atm.type) {
|
|
|
|
|
|
|
|
case TRAF_LANE:
|
|
|
|
/* LANE */
|
|
|
|
atm_hdr[SUNATM_FLAGS] |= 0x01;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TRAF_LLCMX:
|
|
|
|
/* RFC 1483 LLC multiplexed traffic */
|
|
|
|
atm_hdr[SUNATM_FLAGS] |= 0x02;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TRAF_ILMI:
|
|
|
|
/* ILMI */
|
|
|
|
atm_hdr[SUNATM_FLAGS] |= 0x05;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
atm_hdr[SUNATM_VPI] = (guint8)pseudo_header->atm.vpi;
|
|
|
|
phtons(&atm_hdr[SUNATM_VCI], pseudo_header->atm.vci);
|
|
|
|
nwritten = wtap_dump_file_write(wdh, atm_hdr, sizeof(atm_hdr));
|
|
|
|
if (nwritten != sizeof(atm_hdr)) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(atm_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_IRDA:
|
|
|
|
/*
|
|
|
|
* Write the IrDA header.
|
|
|
|
*/
|
|
|
|
memset(irda_hdr, 0, sizeof(irda_hdr));
|
|
|
|
phtons(&irda_hdr[IRDA_SLL_PKTTYPE_OFFSET],
|
|
|
|
pseudo_header->irda.pkttype);
|
|
|
|
phtons(&irda_hdr[IRDA_SLL_PROTOCOL_OFFSET], 0x0017);
|
|
|
|
nwritten = wtap_dump_file_write(wdh, irda_hdr, sizeof(irda_hdr));
|
|
|
|
if (nwritten != sizeof(irda_hdr)) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(irda_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_MTP2_WITH_PHDR:
|
|
|
|
/*
|
|
|
|
* Write the MTP2 header.
|
|
|
|
*/
|
|
|
|
memset(&mtp2_hdr, 0, sizeof(mtp2_hdr));
|
|
|
|
mtp2_hdr[MTP2_SENT_OFFSET] = pseudo_header->mtp2.sent;
|
|
|
|
mtp2_hdr[MTP2_ANNEX_A_USED_OFFSET] = pseudo_header->mtp2.annex_a_used;
|
|
|
|
phtons(&mtp2_hdr[MTP2_LINK_NUMBER_OFFSET],
|
|
|
|
pseudo_header->mtp2.link_number);
|
|
|
|
nwritten = wtap_dump_file_write(wdh, mtp2_hdr, sizeof(mtp2_hdr));
|
|
|
|
if (nwritten != sizeof(mtp2_hdr)) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(mtp2_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_LINUX_LAPD:
|
|
|
|
/*
|
|
|
|
* Write the LAPD header.
|
|
|
|
*/
|
|
|
|
memset(&lapd_hdr, 0, sizeof(lapd_hdr));
|
|
|
|
phtons(&lapd_hdr[LAPD_SLL_PKTTYPE_OFFSET],
|
|
|
|
pseudo_header->lapd.pkttype);
|
|
|
|
phtons(&lapd_hdr[LAPD_SLL_PROTOCOL_OFFSET], ETH_P_LAPD);
|
|
|
|
lapd_hdr[LAPD_SLL_ADDR_OFFSET + 0] =
|
|
|
|
pseudo_header->lapd.we_network?0x01:0x00;
|
|
|
|
nwritten = fwrite(&lapd_hdr, 1, sizeof(lapd_hdr), wdh->fh);
|
|
|
|
if (nwritten != sizeof(lapd_hdr)) {
|
|
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
|
|
*err = errno;
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(lapd_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_SITA:
|
|
|
|
/*
|
|
|
|
* Write the SITA header.
|
|
|
|
*/
|
|
|
|
memset(&sita_hdr, 0, sizeof(sita_hdr));
|
|
|
|
sita_hdr[SITA_FLAGS_OFFSET] = pseudo_header->sita.flags;
|
|
|
|
sita_hdr[SITA_SIGNALS_OFFSET] = pseudo_header->sita.signals;
|
|
|
|
sita_hdr[SITA_ERRORS1_OFFSET] = pseudo_header->sita.errors1;
|
|
|
|
sita_hdr[SITA_ERRORS2_OFFSET] = pseudo_header->sita.errors2;
|
|
|
|
sita_hdr[SITA_PROTO_OFFSET] = pseudo_header->sita.proto;
|
|
|
|
nwritten = fwrite(&sita_hdr, 1, sizeof(sita_hdr), wdh->fh);
|
|
|
|
if (nwritten != sizeof(sita_hdr)) {
|
|
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
|
|
*err = errno;
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(sita_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_USB_LINUX:
|
|
|
|
case WTAP_ENCAP_USB_LINUX_MMAPPED:
|
|
|
|
/*
|
|
|
|
* Write out the pseudo-header; it has the same format
|
|
|
|
* as the Linux USB header, and that header is supposed
|
|
|
|
* to be written in the host byte order of the machine
|
|
|
|
* writing the file.
|
|
|
|
*/
|
|
|
|
nwritten = fwrite(&pseudo_header->linux_usb, 1,
|
|
|
|
sizeof(pseudo_header->linux_usb), wdh->fh);
|
|
|
|
if (nwritten != sizeof(pseudo_header->linux_usb)) {
|
|
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
|
|
*err = errno;
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(lapd_hdr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_ERF:
|
|
|
|
/*
|
|
|
|
* Write the ERF header.
|
|
|
|
*/
|
|
|
|
memset(&erf_hdr, 0, sizeof(erf_hdr));
|
|
|
|
pletonll(&erf_hdr[0], pseudo_header->erf.phdr.ts);
|
|
|
|
erf_hdr[8] = pseudo_header->erf.phdr.type;
|
|
|
|
erf_hdr[9] = pseudo_header->erf.phdr.flags;
|
|
|
|
phtons(&erf_hdr[10], pseudo_header->erf.phdr.rlen);
|
|
|
|
phtons(&erf_hdr[12], pseudo_header->erf.phdr.lctr);
|
|
|
|
phtons(&erf_hdr[14], pseudo_header->erf.phdr.wlen);
|
|
|
|
size = sizeof(struct erf_phdr);
|
|
|
|
|
|
|
|
switch(pseudo_header->erf.phdr.type & 0x7F) {
|
|
|
|
case ERF_TYPE_MC_HDLC:
|
|
|
|
case ERF_TYPE_MC_RAW:
|
|
|
|
case ERF_TYPE_MC_ATM:
|
|
|
|
case ERF_TYPE_MC_RAW_CHANNEL:
|
|
|
|
case ERF_TYPE_MC_AAL5:
|
|
|
|
case ERF_TYPE_MC_AAL2:
|
|
|
|
case ERF_TYPE_COLOR_MC_HDLC_POS:
|
|
|
|
phtonl(&erf_hdr[16], pseudo_header->erf.subhdr.mc_hdr);
|
|
|
|
size += (int)sizeof(struct erf_mc_hdr);
|
|
|
|
break;
|
|
|
|
case ERF_TYPE_ETH:
|
|
|
|
case ERF_TYPE_COLOR_ETH:
|
|
|
|
case ERF_TYPE_DSM_COLOR_ETH:
|
|
|
|
phtons(&erf_hdr[16], pseudo_header->erf.subhdr.eth_hdr);
|
|
|
|
size += (int)sizeof(struct erf_eth_hdr);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
nwritten = wtap_dump_file_write(wdh, erf_hdr, size);
|
|
|
|
if (nwritten != (guint) size) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += size;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case WTAP_ENCAP_I2C:
|
|
|
|
/*
|
|
|
|
* Write the I2C header.
|
|
|
|
*/
|
|
|
|
memset(&i2c_hdr, 0, sizeof(i2c_hdr));
|
|
|
|
i2c_hdr.bus = pseudo_header->i2c.bus |
|
|
|
|
(pseudo_header->i2c.is_event ? 0x80 : 0x00);
|
|
|
|
phtonl((guint8 *)&i2c_hdr.flags, pseudo_header->i2c.flags);
|
|
|
|
nwritten = fwrite(&i2c_hdr, 1, sizeof(i2c_hdr), wdh->fh);
|
|
|
|
if (nwritten != sizeof(i2c_hdr)) {
|
|
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
|
|
*err = errno;
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof(i2c_hdr);
|
|
|
|
break;
|
|
|
|
|
2009-05-21 23:16:49 +00:00
|
|
|
case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR:
|
|
|
|
bt_hdr.direction = GUINT32_TO_BE(pseudo_header->p2p.sent ? LIBPCAP_BT_PHDR_SENT : LIBPCAP_BT_PHDR_RECV);
|
|
|
|
nwritten = wtap_dump_file_write(wdh, &bt_hdr, sizeof bt_hdr);
|
|
|
|
if (nwritten != sizeof bt_hdr) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof bt_hdr;
|
|
|
|
break;
|
2009-06-28 18:22:15 +00:00
|
|
|
|
|
|
|
case WTAP_ENCAP_PPP_WITH_PHDR:
|
|
|
|
ppp_hdr.direction = (pseudo_header->p2p.sent ? LIBPCAP_PPP_PHDR_SENT : LIBPCAP_PPP_PHDR_RECV);
|
|
|
|
nwritten = wtap_dump_file_write(wdh, &ppp_hdr, sizeof ppp_hdr);
|
|
|
|
if (nwritten != sizeof ppp_hdr) {
|
|
|
|
if (nwritten == 0 && wtap_dump_file_ferror(wdh))
|
|
|
|
*err = wtap_dump_file_ferror(wdh);
|
|
|
|
else
|
|
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
wdh->bytes_dumped += sizeof ppp_hdr;
|
|
|
|
break;
|
2009-05-21 23:16:49 +00:00
|
|
|
}
|
2009-04-27 19:39:06 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|