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/***************************************************************************
* ARPHeader.h -- The ARPHeader Class represents an ARP packet. It *
* contains methods to set any header field. In general, these methods do *
* error checkings and byte order conversion. *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
*
* The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
* Project"). Nmap is also a registered trademark of the Nmap Project.
*
* This program is distributed under the terms of the Nmap Public Source
* License (NPSL). The exact license text applying to a particular Nmap
* release or source code control revision is contained in the LICENSE
* file distributed with that version of Nmap or source code control
* revision. More Nmap copyright/legal information is available from
* https://nmap.org/book/man-legal.html, and further information on the
* NPSL license itself can be found at https://nmap.org/npsl/ . This
* header summarizes some key points from the Nmap license, but is no
* substitute for the actual license text.
*
* Nmap is generally free for end users to download and use themselves,
* including commercial use. It is available from https://nmap.org.
*
* The Nmap license generally prohibits companies from using and
* redistributing Nmap in commercial products, but we sell a special Nmap
* OEM Edition with a more permissive license and special features for
* this purpose. See https://nmap.org/oem/
*
* If you have received a written Nmap license agreement or contract
* stating terms other than these (such as an Nmap OEM license), you may
* choose to use and redistribute Nmap under those terms instead.
*
* The official Nmap Windows builds include the Npcap software
* (https://npcap.com) for packet capture and transmission. It is under
* separate license terms which forbid redistribution without special
* permission. So the official Nmap Windows builds may not be redistributed
* without special permission (such as an Nmap OEM license).
*
* Source is provided to this software because we believe users have a
* right to know exactly what a program is going to do before they run it.
* This also allows you to audit the software for security holes.
*
* Source code also allows you to port Nmap to new platforms, fix bugs, and add
* new features. You are highly encouraged to submit your changes as a Github PR
* or by email to the dev@nmap.org mailing list for possible incorporation into
* the main distribution. Unless you specify otherwise, it is understood that
* you are offering us very broad rights to use your submissions as described in
* the Nmap Public Source License Contributor Agreement. This is important
* because we fund the project by selling licenses with various terms, and also
* because the inability to relicense code has caused devastating problems for
* other Free Software projects (such as KDE and NASM).
*
* The free version of Nmap is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
* indemnification and commercial support are all available through the
* Npcap OEM program--see https://nmap.org/oem/
*
***************************************************************************/
/* This code was originally part of the Nping tool. */
#ifndef __ARPHEADER_H__
#define __ARPHEADER_H__ 1
#include "NetworkLayerElement.h"
/* Lengths */
#define ARP_HEADER_LEN 28
#define IPv4_ADDRESS_LEN 4
#define ETH_ADDRESS_LEN 6
/* Hardware Types */
#define HDR_RESERVED 0 /* [RFC5494] */
#define HDR_ETH10MB 1 /* Ethernet (10Mb) */
#define HDR_ETH3MB 2 /* Experimental Ethernet (3Mb) */
#define HDR_AX25 3 /* Amateur Radio AX.25 */
#define HDR_PRONET_TR 4 /* Proteon ProNET Token Ring */
#define HDR_CHAOS 5 /* Chaos */
#define HDR_IEEE802 6 /* IEEE 802 Networks */
#define HDR_ARCNET 7 /* ARCNET [RFC1201] */
#define HDR_HYPERCHANNEL 8 /* Hyperchannel */
#define HDR_LANSTAR 9 /* Lanstar */
#define HDR_AUTONET 10 /* Autonet Short Address */
#define HDR_LOCALTALK 11 /* LocalTalk */
#define HDR_LOCALNET 12 /* LocalNet (IBM PCNet or SYTEK LocalNET) */
#define HDR_ULTRALINK 13 /* Ultra link */
#define HDR_SMDS 14 /* SMDS */
#define HDR_FRAMERELAY 15 /* Frame Relay */
#define HDR_ATM 16 /* Asynchronous Transmission Mode (ATM) */
#define HDR_HDLC 17 /* HDLC */
#define HDR_FIBRE 18 /* Fibre Channel [RFC4338] */
#define HDR_ATMb 19 /* Asynchronous Transmission Mode (ATM) */
#define HDR_SERIAL 20 /* Serial Line */
#define HDR_ATMc 21 /* Asynchronous Transmission Mode [RFC2225] */
#define HDR_MILSTD 22 /* MIL-STD-188-220 */
#define HDR_METRICOM 23 /* Metricom */
#define HDR_IEEE1394 24 /* IEEE 1394.199 */
#define HDR_MAPOS 25 /* MAPOS [RFC2176] */
#define HDR_TWINAXIAL 26 /* Twinaxial */
#define HDR_EUI64 27 /* EUI-64 */
#define HDR_HIPARP 28 /* HIPARP */
#define HDR_ISO7816 29 /* IP and ARP over ISO 7816-3 */
#define HDR_ARPSEC 30 /* ARPSec */
#define HDR_IPSEC 31 /* IPsec tunnel */
#define HDR_INFINIBAND 32 /* InfiniBand (TM) */
#define HDR_TIA102 33 /* TIA-102 Project 25 Common Air Interface */
#define HDR_WIEGAND 34 /* Wiegand Interface */
#define HDR_PUREIP 35 /* Pure IP */
#define HDR_HW_EXP1 36 /* HW_EXP1 [RFC5494] */
#define HDR_HW_EXP2 37 /* HW_EXP2 [RFC5494] */
/* Operation Codes */
#define OP_ARP_REQUEST 1 /* ARP Request */
#define OP_ARP_REPLY 2 /* ARP Reply */
#define OP_RARP_REQUEST 3 /* Reverse ARP Request */
#define OP_RARP_REPLY 4 /* Reverse ARP Reply */
#define OP_DRARP_REQUEST 5 /* DRARP-Request */
#define OP_DRARP_REPLY 6 /* DRARP-Reply */
#define OP_DRARP_ERROR 7 /* DRARP-Error */
#define OP_INARP_REQUEST 8 /* InARP-Request */
#define OP_INARP_REPLY 9 /* InARP-Reply */
#define OP_ARPNAK 10 /* ARP-NAK */
#define OP_MARS_REQUEST 11 /* MARS-Request */
#define OP_MARS_MULTI 12 /* MARS-Multi */
#define OP_MARS_MSERV 13 /* MARS-MServ */
#define OP_MARS_JOIN 14 /* MARS-Join */
#define OP_MARS_LEAVE 15 /* MARS-Leave */
#define OP_MARS_NAK 16 /* MARS-NAK */
#define OP_MARS_UNSERV 17 /* MARS-Unserv */
#define OP_MARS_SJOIN 18 /* MARS-SJoin */
#define OP_MARS_SLEAVE 19 /* MARS-SLeave */
#define OP_MARS_GL_REQ 20 /* MARS-Grouplist-Request */
#define OP_MARS_GL_REP 21 /* MARS-Grouplist-Reply */
#define OP_MARS_REDIR_MAP 22 /* MARS-Redirect-Map */
#define OP_MAPOS_UNARP 23 /* MAPOS-UNARP [RFC2176] */
#define OP_EXP1 24 /* OP_EXP1 [RFC5494] */
#define OP_EXP2 25 /* OP_EXP2 [RFC5494] */
#define OP_RESERVED 65535 /* Reserved [RFC5494] */
/* TODO @todo: getTargetIP() and getSenderIP() should either
* return struct in_addr or IPAddress but not u32. */
class ARPHeader : public NetworkLayerElement {
private:
struct nping_arp_hdr{
u16 ar_hrd; /* Hardware Type. */
u16 ar_pro; /* Protocol Type. */
u8 ar_hln; /* Hardware Address Length. */
u8 ar_pln; /* Protocol Address Length. */
u16 ar_op; /* Operation Code. */
u8 data[20];
// Cannot use these because the four-flushing alignment screws up
// everything. I miss ANSI C.
//u8 ar_sha[6]; /* Sender Hardware Address. */
//u32 ar_sip; /* Sender Protocol Address (IPv4 address). */
//u8 ar_tha[6]; /* Target Hardware Address. */
//u32 ar_tip; /* Target Protocol Address (IPv4 address). */
}__attribute__((__packed__));
typedef struct nping_arp_hdr nping_arp_hdr_t;
nping_arp_hdr_t h;
public:
/* Misc */
ARPHeader();
~ARPHeader();
void reset();
u8 *getBufferPointer();
int storeRecvData(const u8 *buf, size_t len);
int protocol_id() const;
int validate();
int print(FILE *output, int detail) const;
/* Hardware Type */
int setHardwareType(u16 t);
int setHardwareType();
u16 getHardwareType();
/* Protocol Type */
int setProtocolType(u16 t);
int setProtocolType();
u16 getProtocolType();
/* Hardware Address Length */
int setHwAddrLen(u8 v);
int setHwAddrLen();
u8 getHwAddrLen();
/* Hardware Address Length */
int setProtoAddrLen(u8 v);
int setProtoAddrLen();
u8 getProtoAddrLen();
/* Operation Code */
int setOpCode(u16 c);
u16 getOpCode();
/* Sender Hardware Address */
int setSenderMAC(const u8 *m);
u8 *getSenderMAC();
/* Sender Protocol address */
int setSenderIP(struct in_addr i);
u32 getSenderIP();
/* Target Hardware Address */
int setTargetMAC(u8 *m);
u8 *getTargetMAC();
/* Target Protocol Address */
int setTargetIP(struct in_addr i);
u32 getTargetIP();
}; /* End of class ARPHeader */
#endif /* __ARPHEADER_H__ */
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