/* * Copyright (c) 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * savefile.c - supports offline use of tcpdump * Extraction/creation by Jeffrey Mogul, DECWRL * Modified by Steve McCanne, LBL. * * Used to save the received packet headers, after filtering, to * a file, and then read them later. * The first record in the file contains saved values for the machine * dependent values so we can print the dump file on any architecture. */ #ifndef lint static const char rcsid[] _U_ = "@(#) $Header: /tcpdump/master/libpcap/savefile.c,v 1.183 2008-12-23 20:13:29 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #ifdef WIN32 #include <pcap-stdinc.h> #else /* WIN32 */ #if HAVE_INTTYPES_H #include <inttypes.h> #elif HAVE_STDINT_H #include <stdint.h> #endif #ifdef HAVE_SYS_BITYPES_H #include <sys/bitypes.h> #endif #include <sys/types.h> #endif /* WIN32 */ #include "pcap-int.h" #include "pcap/usb.h" #include "pcap-common.h" /* * We don't write DLT_* values to capture files, because they're not the * same on all platforms. * * Unfortunately, the various flavors of BSD have not always used the same * numerical values for the same data types, and various patches to * libpcap for non-BSD OSes have added their own DLT_* codes for link * layer encapsulation types seen on those OSes, and those codes have had, * in some cases, values that were also used, on other platforms, for other * link layer encapsulation types. * * This means that capture files of a type whose numerical DLT_* code * means different things on different BSDs, or with different versions * of libpcap, can't always be read on systems other than those like * the one running on the machine on which the capture was made. * * Instead, we define here a set of LINKTYPE_* codes, and map DLT_* codes * to LINKTYPE_* codes when writing a savefile header, and map LINKTYPE_* * codes to DLT_* codes when reading a savefile header. * * For those DLT_* codes that have, as far as we know, the same values on * all platforms (DLT_NULL through DLT_FDDI), we define LINKTYPE_xxx as * DLT_xxx; that way, captures of those types can still be read by * versions of libpcap that map LINKTYPE_* values to DLT_* values, and * captures of those types written by versions of libpcap that map DLT_ * values to LINKTYPE_ values can still be read by older versions * of libpcap. * * The other LINKTYPE_* codes are given values starting at 100, in the * hopes that no DLT_* code will be given one of those values. * * In order to ensure that a given LINKTYPE_* code's value will refer to * the same encapsulation type on all platforms, you should not allocate * a new LINKTYPE_* value without consulting * "tcpdump-workers@lists.tcpdump.org". The tcpdump developers will * allocate a value for you, and will not subsequently allocate it to * anybody else; that value will be added to the "pcap.h" in the * tcpdump.org Git repository, so that a future libpcap release will * include it. * * You should, if possible, also contribute patches to libpcap and tcpdump * to handle the new encapsulation type, so that they can also be checked * into the tcpdump.org Git repository and so that they will appear in * future libpcap and tcpdump releases. * * Do *NOT* assume that any values after the largest value in this file * are available; you might not have the most up-to-date version of this * file, and new values after that one might have been assigned. Also, * do *NOT* use any values below 100 - those might already have been * taken by one (or more!) organizations. */ #define LINKTYPE_NULL DLT_NULL #define LINKTYPE_ETHERNET DLT_EN10MB /* also for 100Mb and up */ #define LINKTYPE_EXP_ETHERNET DLT_EN3MB /* 3Mb experimental Ethernet */ #define LINKTYPE_AX25 DLT_AX25 #define LINKTYPE_PRONET DLT_PRONET #define LINKTYPE_CHAOS DLT_CHAOS #define LINKTYPE_TOKEN_RING DLT_IEEE802 /* DLT_IEEE802 is used for Token Ring */ #define LINKTYPE_ARCNET DLT_ARCNET /* BSD-style headers */ #define LINKTYPE_SLIP DLT_SLIP #define LINKTYPE_PPP DLT_PPP #define LINKTYPE_FDDI DLT_FDDI /* * LINKTYPE_PPP is for use when there might, or might not, be an RFC 1662 * PPP in HDLC-like framing header (with 0xff 0x03 before the PPP protocol * field) at the beginning of the packet. * * This is for use when there is always such a header; the address field * might be 0xff, for regular PPP, or it might be an address field for Cisco * point-to-point with HDLC framing as per section 4.3.1 of RFC 1547 ("Cisco * HDLC"). This is, for example, what you get with NetBSD's DLT_PPP_SERIAL. * * We give it the same value as NetBSD's DLT_PPP_SERIAL, in the hopes that * nobody else will choose a DLT_ value of 50, and so that DLT_PPP_SERIAL * captures will be written out with a link type that NetBSD's tcpdump * can read. */ #define LINKTYPE_PPP_HDLC 50 /* PPP in HDLC-like framing */ #define LINKTYPE_PPP_ETHER 51 /* NetBSD PPP-over-Ethernet */ #define LINKTYPE_SYMANTEC_FIREWALL 99 /* Symantec Enterprise Firewall */ #define LINKTYPE_ATM_RFC1483 100 /* LLC/SNAP-encapsulated ATM */ #define LINKTYPE_RAW 101 /* raw IP */ #define LINKTYPE_SLIP_BSDOS 102 /* BSD/OS SLIP BPF header */ #define LINKTYPE_PPP_BSDOS 103 /* BSD/OS PPP BPF header */ #define LINKTYPE_C_HDLC 104 /* Cisco HDLC */ #define LINKTYPE_IEEE802_11 105 /* IEEE 802.11 (wireless) */ #define LINKTYPE_ATM_CLIP 106 /* Linux Classical IP over ATM */ #define LINKTYPE_FRELAY 107 /* Frame Relay */ #define LINKTYPE_LOOP 108 /* OpenBSD loopback */ #define LINKTYPE_ENC 109 /* OpenBSD IPSEC enc */ /* * These three types are reserved for future use. */ #define LINKTYPE_LANE8023 110 /* ATM LANE + 802.3 */ #define LINKTYPE_HIPPI 111 /* NetBSD HIPPI */ #define LINKTYPE_HDLC 112 /* NetBSD HDLC framing */ #define LINKTYPE_LINUX_SLL 113 /* Linux cooked socket capture */ #define LINKTYPE_LTALK 114 /* Apple LocalTalk hardware */ #define LINKTYPE_ECONET 115 /* Acorn Econet */ /* * Reserved for use with OpenBSD ipfilter. */ #define LINKTYPE_IPFILTER 116 #define LINKTYPE_PFLOG 117 /* OpenBSD DLT_PFLOG */ #define LINKTYPE_CISCO_IOS 118 /* For Cisco-internal use */ #define LINKTYPE_PRISM_HEADER 119 /* 802.11+Prism II monitor mode */ #define LINKTYPE_AIRONET_HEADER 120 /* FreeBSD Aironet driver stuff */ /* * Reserved for Siemens HiPath HDLC. */ #define LINKTYPE_HHDLC 121 #define LINKTYPE_IP_OVER_FC 122 /* RFC 2625 IP-over-Fibre Channel */ #define LINKTYPE_SUNATM 123 /* Solaris+SunATM */ /* * Reserved as per request from Kent Dahlgren <kent@praesum.com> * for private use. */ #define LINKTYPE_RIO 124 /* RapidIO */ #define LINKTYPE_PCI_EXP 125 /* PCI Express */ #define LINKTYPE_AURORA 126 /* Xilinx Aurora link layer */ #define LINKTYPE_IEEE802_11_RADIO 127 /* 802.11 plus BSD radio header */ /* * Reserved for the TZSP encapsulation, as per request from * Chris Waters <chris.waters@networkchemistry.com> * TZSP is a generic encapsulation for any other link type, * which includes a means to include meta-information * with the packet, e.g. signal strength and channel * for 802.11 packets. */ #define LINKTYPE_TZSP 128 /* Tazmen Sniffer Protocol */ #define LINKTYPE_ARCNET_LINUX 129 /* Linux-style headers */ /* * Juniper-private data link types, as per request from * Hannes Gredler <hannes@juniper.net>. The corresponding * DLT_s are used for passing on chassis-internal * metainformation such as QOS profiles, etc.. */ #define LINKTYPE_JUNIPER_MLPPP 130 #define LINKTYPE_JUNIPER_MLFR 131 #define LINKTYPE_JUNIPER_ES 132 #define LINKTYPE_JUNIPER_GGSN 133 #define LINKTYPE_JUNIPER_MFR 134 #define LINKTYPE_JUNIPER_ATM2 135 #define LINKTYPE_JUNIPER_SERVICES 136 #define LINKTYPE_JUNIPER_ATM1 137 #define LINKTYPE_APPLE_IP_OVER_IEEE1394 138 /* Apple IP-over-IEEE 1394 cooked header */ #define LINKTYPE_MTP2_WITH_PHDR 139 #define LINKTYPE_MTP2 140 #define LINKTYPE_MTP3 141 #define LINKTYPE_SCCP 142 #define LINKTYPE_DOCSIS 143 /* DOCSIS MAC frames */ #define LINKTYPE_LINUX_IRDA 144 /* Linux-IrDA */ /* * Reserved for IBM SP switch and IBM Next Federation switch. */ #define LINKTYPE_IBM_SP 145 #define LINKTYPE_IBM_SN 146 /* * Reserved for private use. If you have some link-layer header type * that you want to use within your organization, with the capture files * using that link-layer header type not ever be sent outside your * organization, you can use these values. * * No libpcap release will use these for any purpose, nor will any * tcpdump release use them, either. * * Do *NOT* use these in capture files that you expect anybody not using * your private versions of capture-file-reading tools to read; in * particular, do *NOT* use them in products, otherwise you may find that * people won't be able to use tcpdump, or snort, or Ethereal, or... to * read capture files from your firewall/intrusion detection/traffic * monitoring/etc. appliance, or whatever product uses that LINKTYPE_ value, * and you may also find that the developers of those applications will * not accept patches to let them read those files. * * Also, do not use them if somebody might send you a capture using them * for *their* private type and tools using them for *your* private type * would have to read them. * * Instead, in those cases, ask "tcpdump-workers@lists.tcpdump.org" for a * new DLT_ and LINKTYPE_ value, as per the comment in pcap/bpf.h, and use * the type you're given. */ #define LINKTYPE_USER0 147 #define LINKTYPE_USER1 148 #define LINKTYPE_USER2 149 #define LINKTYPE_USER3 150 #define LINKTYPE_USER4 151 #define LINKTYPE_USER5 152 #define LINKTYPE_USER6 153 #define LINKTYPE_USER7 154 #define LINKTYPE_USER8 155 #define LINKTYPE_USER9 156 #define LINKTYPE_USER10 157 #define LINKTYPE_USER11 158 #define LINKTYPE_USER12 159 #define LINKTYPE_USER13 160 #define LINKTYPE_USER14 161 #define LINKTYPE_USER15 162 /* * For future use with 802.11 captures - defined by AbsoluteValue * Systems to store a number of bits of link-layer information * including radio information: * * http://www.shaftnet.org/~pizza/software/capturefrm.txt * * but could and arguably should also be used by non-AVS Linux * 802.11 drivers; that may happen in the future. */ #define LINKTYPE_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. The corresponding * DLT_s are used for passing on chassis-internal * metainformation such as QOS profiles, etc.. */ #define LINKTYPE_JUNIPER_MONITOR 164 /* * Reserved for BACnet MS/TP. */ #define LINKTYPE_BACNET_MS_TP 165 /* * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>. * * This is used in some OSes to allow a kernel socket filter to distinguish * between incoming and outgoing packets, on a socket intended to * supply pppd with outgoing packets so it can do dial-on-demand and * hangup-on-lack-of-demand; incoming packets are filtered out so they * don't cause pppd to hold the connection up (you don't want random * input packets such as port scans, packets from old lost connections, * etc. to force the connection to stay up). * * The first byte of the PPP header (0xff03) is modified to accomodate * the direction - 0x00 = IN, 0x01 = OUT. */ #define LINKTYPE_PPP_PPPD 166 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. The DLT_s are used * for passing on chassis-internal metainformation such as * QOS profiles, cookies, etc.. */ #define LINKTYPE_JUNIPER_PPPOE 167 #define LINKTYPE_JUNIPER_PPPOE_ATM 168 #define LINKTYPE_GPRS_LLC 169 /* GPRS LLC */ #define LINKTYPE_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ #define LINKTYPE_GPF_F 171 /* GPF-T (ITU-T G.7041/Y.1303) */ /* * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line * monitoring equipment. */ #define LINKTYPE_GCOM_T1E1 172 #define LINKTYPE_GCOM_SERIAL 173 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. The DLT_ is used * for internal communication to Physical Interface Cards (PIC) */ #define LINKTYPE_JUNIPER_PIC_PEER 174 /* * Link types requested by Gregor Maier <gregor@endace.com> of Endace * Measurement Systems. They add an ERF header (see * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of * the link-layer header. */ #define LINKTYPE_ERF_ETH 175 /* Ethernet */ #define LINKTYPE_ERF_POS 176 /* Packet-over-SONET */ /* * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header * includes additional information before the LAPD header, so it's * not necessarily a generic LAPD header. */ #define LINKTYPE_LINUX_LAPD 177 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. * The Link Types are used for prepending meta-information * like interface index, interface name * before standard Ethernet, PPP, Frelay & C-HDLC Frames */ #define LINKTYPE_JUNIPER_ETHER 178 #define LINKTYPE_JUNIPER_PPP 179 #define LINKTYPE_JUNIPER_FRELAY 180 #define LINKTYPE_JUNIPER_CHDLC 181 /* * Multi Link Frame Relay (FRF.16) */ #define LINKTYPE_MFR 182 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. * The DLT_ is used for internal communication with a * voice Adapter Card (PIC) */ #define LINKTYPE_JUNIPER_VP 183 /* * Arinc 429 frames. * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. * Every frame contains a 32bit A429 label. * More documentation on Arinc 429 can be found at * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf */ #define LINKTYPE_A429 184 /* * Arinc 653 Interpartition Communication messages. * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. * Please refer to the A653-1 standard for more information. */ #define LINKTYPE_A653_ICM 185 /* * USB packets, beginning with a USB setup header; requested by * Paolo Abeni <paolo.abeni@email.it>. */ #define LINKTYPE_USB 186 /* * Bluetooth HCI UART transport layer (part H:4); requested by * Paolo Abeni. */ #define LINKTYPE_BLUETOOTH_HCI_H4 187 /* * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz * <cruz_petagay@bah.com>. */ #define LINKTYPE_IEEE802_16_MAC_CPS 188 /* * USB packets, beginning with a Linux USB header; requested by * Paolo Abeni <paolo.abeni@email.it>. */ #define LINKTYPE_USB_LINUX 189 /* * Controller Area Network (CAN) v. 2.0B packets. * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. * Used to dump CAN packets coming from a CAN Vector board. * More documentation on the CAN v2.0B frames can be found at * http://www.can-cia.org/downloads/?269 */ #define LINKTYPE_CAN20B 190 /* * IEEE 802.15.4, with address fields padded, as is done by Linux * drivers; requested by Juergen Schimmer. */ #define LINKTYPE_IEEE802_15_4_LINUX 191 /* * Per Packet Information encapsulated packets. * LINKTYPE_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. */ #define LINKTYPE_PPI 192 /* * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; * requested by Charles Clancy. */ #define LINKTYPE_IEEE802_16_MAC_CPS_RADIO 193 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. * The DLT_ is used for internal communication with a * integrated service module (ISM). */ #define LINKTYPE_JUNIPER_ISM 194 /* * IEEE 802.15.4, exactly as it appears in the spec (no padding, no * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>. */ #define LINKTYPE_IEEE802_15_4 195 /* * Various link-layer types, with a pseudo-header, for SITA * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com). */ #define LINKTYPE_SITA 196 /* * Various link-layer types, with a pseudo-header, for Endace DAG cards; * encapsulates Endace ERF records. Requested by Stephen Donnelly * <stephen@endace.com>. */ #define LINKTYPE_ERF 197 /* * Special header prepended to Ethernet packets when capturing from a * u10 Networks board. Requested by Phil Mulholland * <phil@u10networks.com>. */ #define LINKTYPE_RAIF1 198 /* * IPMB packet for IPMI, beginning with the I2C slave address, followed * by the netFn and LUN, etc.. Requested by Chanthy Toeung * <chanthy.toeung@ca.kontron.com>. */ #define LINKTYPE_IPMB 199 /* * Juniper-private data link type, as per request from * Hannes Gredler <hannes@juniper.net>. * The DLT_ is used for capturing data on a secure tunnel interface. */ #define LINKTYPE_JUNIPER_ST 200 /* * Bluetooth HCI UART transport layer (part H:4), with pseudo-header * that includes direction information; requested by Paolo Abeni. */ #define LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR 201 /* * AX.25 packet with a 1-byte KISS header; see * * http://www.ax25.net/kiss.htm * * as per Richard Stearn <richard@rns-stearn.demon.co.uk>. */ #define LINKTYPE_AX25_KISS 202 /* * LAPD packets from an ISDN channel, starting with the address field, * with no pseudo-header. * Requested by Varuna De Silva <varunax@gmail.com>. */ #define LINKTYPE_LAPD 203 /* * Variants of various link-layer headers, with a one-byte direction * pseudo-header prepended - zero means "received by this host", * non-zero (any non-zero value) means "sent by this host" - as per * Will Barker <w.barker@zen.co.uk>. */ #define LINKTYPE_PPP_WITH_DIR 204 /* PPP */ #define LINKTYPE_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ #define LINKTYPE_FRELAY_WITH_DIR 206 /* Frame Relay */ #define LINKTYPE_LAPB_WITH_DIR 207 /* LAPB */ /* * 208 is reserved for an as-yet-unspecified proprietary link-layer * type, as requested by Will Barker. */ /* * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman * <avn@pigeonpoint.com>. */ #define LINKTYPE_IPMB_LINUX 209 /* * FlexRay automotive bus - http://www.flexray.com/ - as requested * by Hannes Kaelber <hannes.kaelber@x2e.de>. */ #define LINKTYPE_FLEXRAY 210 /* * Media Oriented Systems Transport (MOST) bus for multimedia * transport - http://www.mostcooperation.com/ - as requested * by Hannes Kaelber <hannes.kaelber@x2e.de>. */ #define LINKTYPE_MOST 211 /* * Local Interconnect Network (LIN) bus for vehicle networks - * http://www.lin-subbus.org/ - as requested by Hannes Kaelber * <hannes.kaelber@x2e.de>. */ #define LINKTYPE_LIN 212 /* * X2E-private data link type used for serial line capture, * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>. */ #define LINKTYPE_X2E_SERIAL 213 /* * X2E-private data link type used for the Xoraya data logger * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>. */ #define LINKTYPE_X2E_XORAYA 214 /* * IEEE 802.15.4, exactly as it appears in the spec (no padding, no * nothing), but with the PHY-level data for non-ASK PHYs (4 octets * of 0 as preamble, one octet of SFD, one octet of frame length+ * reserved bit, and then the MAC-layer data, starting with the * frame control field). * * Requested by Max Filippov <jcmvbkbc@gmail.com>. */ #define LINKTYPE_IEEE802_15_4_NONASK_PHY 215 /* * David Gibson <david@gibson.dropbear.id.au> requested this for * captures from the Linux kernel /dev/input/eventN devices. This * is used to communicate keystrokes and mouse movements from the * Linux kernel to display systems, such as Xorg. */ #define LINKTYPE_LINUX_EVDEV 216 /* * GSM Um and Abis interfaces, preceded by a "gsmtap" header. * * Requested by Harald Welte <laforge@gnumonks.org>. */ #define LINKTYPE_GSMTAP_UM 217 #define LINKTYPE_GSMTAP_ABIS 218 /* * MPLS, with an MPLS label as the link-layer header. * Requested by Michele Marchetto <michele@openbsd.org> on behalf * of OpenBSD. */ #define LINKTYPE_MPLS 219 /* * USB packets, beginning with a Linux USB header, with the USB header * padded to 64 bytes; required for memory-mapped access. */ #define LINKTYPE_USB_LINUX_MMAPPED 220 /* * DECT packets, with a pseudo-header; requested by * Matthias Wenzel <tcpdump@mazzoo.de>. */ #define LINKTYPE_DECT 221 /* * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1@nasa.gov> * Date: Mon, 11 May 2009 11:18:30 -0500 * * DLT_AOS. We need it for AOS Space Data Link Protocol. * I have already written dissectors for but need an OK from * legal before I can submit a patch. * */ #define LINKTYPE_AOS 222 /* * Wireless HART (Highway Addressable Remote Transducer) * From the HART Communication Foundation * IES/PAS 62591 * * Requested by Sam Roberts <vieuxtech@gmail.com>. */ #define LINKTYPE_WIHART 223 /* * Fibre Channel FC-2 frames, beginning with a Frame_Header. * Requested by Kahou Lei <kahou82@gmail.com>. */ #define LINKTYPE_FC_2 224 /* * Fibre Channel FC-2 frames, beginning with an encoding of the * SOF, and ending with an encoding of the EOF. * * The encodings represent the frame delimiters as 4-byte sequences * representing the corresponding ordered sets, with K28.5 * represented as 0xBC, and the D symbols as the corresponding * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2, * is represented as 0xBC 0xB5 0x55 0x55. * * Requested by Kahou Lei <kahou82@gmail.com>. */ #define LINKTYPE_FC_2_WITH_FRAME_DELIMS 225 /* * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed@Sun.COM>. * * The pseudo-header starts with a one-byte version number; for version 2, * the pseudo-header is: * * struct dl_ipnetinfo { * u_int8_t dli_version; * u_int8_t dli_family; * u_int16_t dli_htype; * u_int32_t dli_pktlen; * u_int32_t dli_ifindex; * u_int32_t dli_grifindex; * u_int32_t dli_zsrc; * u_int32_t dli_zdst; * }; * * dli_version is 2 for the current version of the pseudo-header. * * dli_family is a Solaris address family value, so it's 2 for IPv4 * and 26 for IPv6. * * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing * packets, and 2 for packets arriving from another zone on the same * machine. * * dli_pktlen is the length of the packet data following the pseudo-header * (so the captured length minus dli_pktlen is the length of the * pseudo-header, assuming the entire pseudo-header was captured). * * dli_ifindex is the interface index of the interface on which the * packet arrived. * * dli_grifindex is the group interface index number (for IPMP interfaces). * * dli_zsrc is the zone identifier for the source of the packet. * * dli_zdst is the zone identifier for the destination of the packet. * * A zone number of 0 is the global zone; a zone number of 0xffffffff * means that the packet arrived from another host on the network, not * from another zone on the same machine. * * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates * which of those it is. */ #define LINKTYPE_IPNET 226 /* * CAN (Controller Area Network) frames, with a pseudo-header as supplied * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux * source. * * Requested by Felix Obenhuber <felix@obenhuber.de>. */ #define LINKTYPE_CAN_SOCKETCAN 227 /* * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies * whether it's v4 or v6. Requested by Darren Reed <Darren.Reed@Sun.COM>. */ #define LINKTYPE_IPV4 228 #define LINKTYPE_IPV6 229 static struct linktype_map { int dlt; int linktype; } map[] = { /* * These DLT_* codes have LINKTYPE_* codes with values identical * to the values of the corresponding DLT_* code. */ { DLT_NULL, LINKTYPE_NULL }, { DLT_EN10MB, LINKTYPE_ETHERNET }, { DLT_EN3MB, LINKTYPE_EXP_ETHERNET }, { DLT_AX25, LINKTYPE_AX25 }, { DLT_PRONET, LINKTYPE_PRONET }, { DLT_CHAOS, LINKTYPE_CHAOS }, { DLT_IEEE802, LINKTYPE_TOKEN_RING }, { DLT_ARCNET, LINKTYPE_ARCNET }, { DLT_SLIP, LINKTYPE_SLIP }, { DLT_PPP, LINKTYPE_PPP }, { DLT_FDDI, LINKTYPE_FDDI }, /* * These DLT_* codes have different values on different * platforms; we map them to LINKTYPE_* codes that * have values that should never be equal to any DLT_* * code. */ #ifdef DLT_FR /* BSD/OS Frame Relay */ { DLT_FR, LINKTYPE_FRELAY }, #endif { DLT_SYMANTEC_FIREWALL, LINKTYPE_SYMANTEC_FIREWALL }, { DLT_ATM_RFC1483, LINKTYPE_ATM_RFC1483 }, { DLT_RAW, LINKTYPE_RAW }, { DLT_SLIP_BSDOS, LINKTYPE_SLIP_BSDOS }, { DLT_PPP_BSDOS, LINKTYPE_PPP_BSDOS }, /* BSD/OS Cisco HDLC */ { DLT_C_HDLC, LINKTYPE_C_HDLC }, /* * These DLT_* codes are not on all platforms, but, so far, * there don't appear to be any platforms that define * other codes with those values; we map them to * different LINKTYPE_* values anyway, just in case. */ /* Linux ATM Classical IP */ { DLT_ATM_CLIP, LINKTYPE_ATM_CLIP }, /* NetBSD sync/async serial PPP (or Cisco HDLC) */ { DLT_PPP_SERIAL, LINKTYPE_PPP_HDLC }, /* NetBSD PPP over Ethernet */ { DLT_PPP_ETHER, LINKTYPE_PPP_ETHER }, /* IEEE 802.11 wireless */ { DLT_IEEE802_11, LINKTYPE_IEEE802_11 }, /* Frame Relay */ { DLT_FRELAY, LINKTYPE_FRELAY }, /* OpenBSD loopback */ { DLT_LOOP, LINKTYPE_LOOP }, /* OpenBSD IPSEC enc */ { DLT_ENC, LINKTYPE_ENC }, /* Linux cooked socket capture */ { DLT_LINUX_SLL, LINKTYPE_LINUX_SLL }, /* Apple LocalTalk hardware */ { DLT_LTALK, LINKTYPE_LTALK }, /* Acorn Econet */ { DLT_ECONET, LINKTYPE_ECONET }, /* OpenBSD DLT_PFLOG */ { DLT_PFLOG, LINKTYPE_PFLOG }, /* For Cisco-internal use */ { DLT_CISCO_IOS, LINKTYPE_CISCO_IOS }, /* Prism II monitor-mode header plus 802.11 header */ { DLT_PRISM_HEADER, LINKTYPE_PRISM_HEADER }, /* FreeBSD Aironet driver stuff */ { DLT_AIRONET_HEADER, LINKTYPE_AIRONET_HEADER }, /* Siemens HiPath HDLC */ { DLT_HHDLC, LINKTYPE_HHDLC }, /* RFC 2625 IP-over-Fibre Channel */ { DLT_IP_OVER_FC, LINKTYPE_IP_OVER_FC }, /* Solaris+SunATM */ { DLT_SUNATM, LINKTYPE_SUNATM }, /* RapidIO */ { DLT_RIO, LINKTYPE_RIO }, /* PCI Express */ { DLT_PCI_EXP, LINKTYPE_PCI_EXP }, /* Xilinx Aurora link layer */ { DLT_AURORA, LINKTYPE_AURORA }, /* 802.11 plus BSD radio header */ { DLT_IEEE802_11_RADIO, LINKTYPE_IEEE802_11_RADIO }, /* Tazmen Sniffer Protocol */ { DLT_TZSP, LINKTYPE_TZSP }, /* Arcnet with Linux-style link-layer headers */ { DLT_ARCNET_LINUX, LINKTYPE_ARCNET_LINUX }, /* Juniper-internal chassis encapsulation */ { DLT_JUNIPER_MLPPP, LINKTYPE_JUNIPER_MLPPP }, { DLT_JUNIPER_MLFR, LINKTYPE_JUNIPER_MLFR }, { DLT_JUNIPER_ES, LINKTYPE_JUNIPER_ES }, { DLT_JUNIPER_GGSN, LINKTYPE_JUNIPER_GGSN }, { DLT_JUNIPER_MFR, LINKTYPE_JUNIPER_MFR }, { DLT_JUNIPER_ATM2, LINKTYPE_JUNIPER_ATM2 }, { DLT_JUNIPER_SERVICES, LINKTYPE_JUNIPER_SERVICES }, { DLT_JUNIPER_ATM1, LINKTYPE_JUNIPER_ATM1 }, /* Apple IP-over-IEEE 1394 cooked header */ { DLT_APPLE_IP_OVER_IEEE1394, LINKTYPE_APPLE_IP_OVER_IEEE1394 }, /* SS7 */ { DLT_MTP2_WITH_PHDR, LINKTYPE_MTP2_WITH_PHDR }, { DLT_MTP2, LINKTYPE_MTP2 }, { DLT_MTP3, LINKTYPE_MTP3 }, { DLT_SCCP, LINKTYPE_SCCP }, /* DOCSIS MAC frames */ { DLT_DOCSIS, LINKTYPE_DOCSIS }, /* IrDA IrLAP packets + Linux-cooked header */ { DLT_LINUX_IRDA, LINKTYPE_LINUX_IRDA }, /* IBM SP and Next Federation switches */ { DLT_IBM_SP, LINKTYPE_IBM_SP }, { DLT_IBM_SN, LINKTYPE_IBM_SN }, /* 802.11 plus AVS radio header */ { DLT_IEEE802_11_RADIO_AVS, LINKTYPE_IEEE802_11_RADIO_AVS }, /* * Any platform that defines additional DLT_* codes should: * * request a LINKTYPE_* code and value from tcpdump.org, * as per the above; * * add, in their version of libpcap, an entry to map * those DLT_* codes to the corresponding LINKTYPE_* * code; * * redefine, in their "net/bpf.h", any DLT_* values * that collide with the values used by their additional * DLT_* codes, to remove those collisions (but without * making them collide with any of the LINKTYPE_* * values equal to 50 or above; they should also avoid * defining DLT_* values that collide with those * LINKTYPE_* values, either). */ /* Juniper-internal chassis encapsulation */ { DLT_JUNIPER_MONITOR, LINKTYPE_JUNIPER_MONITOR }, /* BACnet MS/TP */ { DLT_BACNET_MS_TP, LINKTYPE_BACNET_MS_TP }, /* PPP for pppd, with direction flag in the PPP header */ { DLT_PPP_PPPD, LINKTYPE_PPP_PPPD}, /* Juniper-internal chassis encapsulation */ { DLT_JUNIPER_PPPOE, LINKTYPE_JUNIPER_PPPOE }, { DLT_JUNIPER_PPPOE_ATM,LINKTYPE_JUNIPER_PPPOE_ATM }, /* GPRS LLC */ { DLT_GPRS_LLC, LINKTYPE_GPRS_LLC }, /* Transparent Generic Framing Procedure (ITU-T G.7041/Y.1303) */ { DLT_GPF_T, LINKTYPE_GPF_T }, /* Framed Generic Framing Procedure (ITU-T G.7041/Y.1303) */ { DLT_GPF_F, LINKTYPE_GPF_F }, { DLT_GCOM_T1E1, LINKTYPE_GCOM_T1E1 }, { DLT_GCOM_SERIAL, LINKTYPE_GCOM_SERIAL }, /* Juniper-internal chassis encapsulation */ { DLT_JUNIPER_PIC_PEER, LINKTYPE_JUNIPER_PIC_PEER }, /* Endace types */ { DLT_ERF_ETH, LINKTYPE_ERF_ETH }, { DLT_ERF_POS, LINKTYPE_ERF_POS }, /* viSDN LAPD */ { DLT_LINUX_LAPD, LINKTYPE_LINUX_LAPD }, /* Juniper meta-information before Ether, PPP, Frame Relay, C-HDLC Frames */ { DLT_JUNIPER_ETHER, LINKTYPE_JUNIPER_ETHER }, { DLT_JUNIPER_PPP, LINKTYPE_JUNIPER_PPP }, { DLT_JUNIPER_FRELAY, LINKTYPE_JUNIPER_FRELAY }, { DLT_JUNIPER_CHDLC, LINKTYPE_JUNIPER_CHDLC }, /* Multi Link Frame Relay (FRF.16) */ { DLT_MFR, LINKTYPE_MFR }, /* Juniper Voice PIC */ { DLT_JUNIPER_VP, LINKTYPE_JUNIPER_VP }, /* Controller Area Network (CAN) v2.0B */ { DLT_A429, LINKTYPE_A429 }, /* Arinc 653 Interpartition Communication messages */ { DLT_A653_ICM, LINKTYPE_A653_ICM }, /* USB */ { DLT_USB, LINKTYPE_USB }, /* Bluetooth HCI UART transport layer */ { DLT_BLUETOOTH_HCI_H4, LINKTYPE_BLUETOOTH_HCI_H4 }, /* IEEE 802.16 MAC Common Part Sublayer */ { DLT_IEEE802_16_MAC_CPS, LINKTYPE_IEEE802_16_MAC_CPS }, /* USB with Linux header */ { DLT_USB_LINUX, LINKTYPE_USB_LINUX }, /* Controller Area Network (CAN) v2.0B */ { DLT_CAN20B, LINKTYPE_CAN20B }, /* IEEE 802.15.4 with address fields padded */ { DLT_IEEE802_15_4_LINUX, LINKTYPE_IEEE802_15_4_LINUX }, /* Per Packet Information encapsulated packets */ { DLT_PPI, LINKTYPE_PPI }, /* IEEE 802.16 MAC Common Part Sublayer plus radiotap header */ { DLT_IEEE802_16_MAC_CPS_RADIO, LINKTYPE_IEEE802_16_MAC_CPS_RADIO }, /* Juniper Voice ISM */ { DLT_JUNIPER_ISM, LINKTYPE_JUNIPER_ISM }, /* IEEE 802.15.4 exactly as it appears in the spec */ { DLT_IEEE802_15_4, LINKTYPE_IEEE802_15_4 }, /* Various link-layer types for SITA */ { DLT_SITA, LINKTYPE_SITA }, /* Various link-layer types for Endace */ { DLT_ERF, LINKTYPE_ERF }, /* Special header for u10 Networks boards */ { DLT_RAIF1, LINKTYPE_RAIF1 }, /* IPMB */ { DLT_IPMB, LINKTYPE_IPMB }, /* Juniper Secure Tunnel */ { DLT_JUNIPER_ST, LINKTYPE_JUNIPER_ST }, /* Bluetooth HCI UART transport layer, with pseudo-header */ { DLT_BLUETOOTH_HCI_H4_WITH_PHDR, LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR }, /* AX.25 with KISS header */ { DLT_AX25_KISS, LINKTYPE_AX25_KISS }, /* Raw LAPD, with no pseudo-header */ { DLT_LAPD, LINKTYPE_LAPD }, /* PPP with one-byte pseudo-header giving direction */ { DLT_PPP_WITH_DIR, LINKTYPE_PPP_WITH_DIR }, /* Cisco HDLC with one-byte pseudo-header giving direction */ { DLT_C_HDLC_WITH_DIR, LINKTYPE_C_HDLC_WITH_DIR }, /* Frame Relay with one-byte pseudo-header giving direction */ { DLT_FRELAY_WITH_DIR, LINKTYPE_FRELAY_WITH_DIR }, /* LAPB with one-byte pseudo-header giving direction */ { DLT_LAPB_WITH_DIR, LINKTYPE_LAPB_WITH_DIR }, /* IPMB with Linux pseudo-header */ { DLT_IPMB_LINUX, LINKTYPE_IPMB_LINUX }, /* FlexRay */ { DLT_FLEXRAY, LINKTYPE_FLEXRAY }, /* MOST */ { DLT_MOST, LINKTYPE_MOST }, /* LIN */ { DLT_LIN, LINKTYPE_LIN }, /* X2E-private serial line capture */ { DLT_X2E_SERIAL, LINKTYPE_X2E_SERIAL }, /* X2E-private for Xoraya data logger family */ { DLT_X2E_XORAYA, LINKTYPE_X2E_XORAYA }, /* IEEE 802.15.4 with PHY data for non-ASK PHYs */ { DLT_IEEE802_15_4_NONASK_PHY, LINKTYPE_IEEE802_15_4_NONASK_PHY }, /* Input device events from Linux /dev/input/eventN devices */ { DLT_LINUX_EVDEV, LINKTYPE_LINUX_EVDEV }, /* GSM types */ { DLT_GSMTAP_UM, LINKTYPE_GSMTAP_UM }, { DLT_GSMTAP_ABIS, LINKTYPE_GSMTAP_ABIS }, /* MPLS, with an MPLS label as the link-layer header */ { DLT_MPLS, LINKTYPE_MPLS }, /* USB with padded Linux header */ { DLT_USB_LINUX_MMAPPED, LINKTYPE_USB_LINUX_MMAPPED }, /* DECT packets with a pseudo-header */ { DLT_DECT, LINKTYPE_DECT }, /* AOS Space Data Link Protocol */ { DLT_AOS, LINKTYPE_AOS }, /* Wireless HART */ { DLT_WIHART, LINKTYPE_WIHART }, /* Fibre Channel FC-2 frames without SOF or EOF */ { DLT_FC_2, LINKTYPE_FC_2 }, /* Fibre Channel FC-2 frames with SOF and EOF */ { DLT_FC_2_WITH_FRAME_DELIMS, LINKTYPE_FC_2_WITH_FRAME_DELIMS }, /* Solaris IPNET */ { DLT_IPNET, LINKTYPE_IPNET }, /* CAN frames with SocketCAN headers */ { DLT_CAN_SOCKETCAN, LINKTYPE_CAN_SOCKETCAN }, /* Raw IPv4/IPv6 */ { DLT_IPV4, LINKTYPE_IPV4 }, { DLT_IPV6, LINKTYPE_IPV6 }, { -1, -1 } }; int dlt_to_linktype(int dlt) { int i; for (i = 0; map[i].dlt != -1; i++) { if (map[i].dlt == dlt) return (map[i].linktype); } /* * If we don't have a mapping for this DLT_ code, return an * error; that means that the table above needs to have an * entry added. */ return (-1); } int linktype_to_dlt(int linktype) { int i; for (i = 0; map[i].linktype != -1; i++) { if (map[i].linktype == linktype) return (map[i].dlt); } /* * If we don't have an entry for this link type, return * the link type value; it may be a DLT_ value from an * older version of libpcap. */ return linktype; } /* * The DLT_USB_LINUX and DLT_USB_LINUX_MMAPPED headers are in host * byte order when capturing (it's supplied directly from a * memory-mapped buffer shared by the kernel). * * When reading a DLT_USB_LINUX or DLT_USB_LINUX_MMAPPED capture file, * we need to convert it from the capturing host's byte order to * the reading host's byte order. */ void swap_linux_usb_header(const struct pcap_pkthdr *hdr, u_char *buf, int header_len_64_bytes) { pcap_usb_header_mmapped *uhdr = (pcap_usb_header_mmapped *)buf; /* * The URB id is a totally opaque value; do we really need to * convert it to the reading host's byte order??? */ if (hdr->caplen < 8) return; uhdr->id = SWAPLL(uhdr->id); if (hdr->caplen < 14) return; uhdr->bus_id = SWAPSHORT(uhdr->bus_id); if (hdr->caplen < 24) return; uhdr->ts_sec = SWAPLL(uhdr->ts_sec); if (hdr->caplen < 28) return; uhdr->ts_usec = SWAPLONG(uhdr->ts_usec); if (hdr->caplen < 32) return; uhdr->status = SWAPLONG(uhdr->status); if (hdr->caplen < 36) return; uhdr->urb_len = SWAPLONG(uhdr->urb_len); if (hdr->caplen < 40) return; uhdr->data_len = SWAPLONG(uhdr->data_len); if (header_len_64_bytes) { /* * This is either the "version 1" header, with * 16 bytes of additional fields at the end, or * a "version 0" header from a memory-mapped * capture, with 16 bytes of zeroed-out padding * at the end. Byte swap them as if this were * a "version 1" header. */ if (hdr->caplen < 52) return; uhdr->interval = SWAPLONG(uhdr->interval); if (hdr->caplen < 56) return; uhdr->start_frame = SWAPLONG(uhdr->start_frame); if (hdr->caplen < 60) return; uhdr->xfer_flags = SWAPLONG(uhdr->xfer_flags); if (hdr->caplen < 64) return; uhdr->ndesc = SWAPLONG(uhdr->ndesc); } }