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225 lines
11 KiB
C++
225 lines
11 KiB
C++
/***************************************************************************
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* ARPHeader.h -- The ARPHeader Class represents an ARP packet. It *
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* contains methods to set any header field. In general, these methods do *
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* error checkings and byte order conversion. *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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*
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* The Nmap Security Scanner is (C) 1996-2025 Nmap Software LLC ("The Nmap
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* Project"). Nmap is also a registered trademark of the Nmap Project.
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*
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* This program is distributed under the terms of the Nmap Public Source
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* License (NPSL). The exact license text applying to a particular Nmap
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* release or source code control revision is contained in the LICENSE
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* file distributed with that version of Nmap or source code control
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* revision. More Nmap copyright/legal information is available from
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* https://nmap.org/book/man-legal.html, and further information on the
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* NPSL license itself can be found at https://nmap.org/npsl/ . This
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* header summarizes some key points from the Nmap license, but is no
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* substitute for the actual license text.
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*
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* Nmap is generally free for end users to download and use themselves,
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* including commercial use. It is available from https://nmap.org.
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*
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* The Nmap license generally prohibits companies from using and
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* redistributing Nmap in commercial products, but we sell a special Nmap
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* OEM Edition with a more permissive license and special features for
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* this purpose. See https://nmap.org/oem/
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*
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* If you have received a written Nmap license agreement or contract
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* stating terms other than these (such as an Nmap OEM license), you may
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* choose to use and redistribute Nmap under those terms instead.
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*
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* The official Nmap Windows builds include the Npcap software
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* (https://npcap.com) for packet capture and transmission. It is under
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* separate license terms which forbid redistribution without special
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* permission. So the official Nmap Windows builds may not be redistributed
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* without special permission (such as an Nmap OEM license).
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*
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* Source is provided to this software because we believe users have a
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* right to know exactly what a program is going to do before they run it.
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* This also allows you to audit the software for security holes.
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*
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* Source code also allows you to port Nmap to new platforms, fix bugs, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* and NASM).
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*
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* The free version of Nmap is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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* indemnification and commercial support are all available through the
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* Npcap OEM program--see https://nmap.org/oem/
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*
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***************************************************************************/
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/* This code was originally part of the Nping tool. */
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#ifndef __ARPHEADER_H__
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#define __ARPHEADER_H__ 1
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#include "NetworkLayerElement.h"
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/* Lengths */
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#define ARP_HEADER_LEN 28
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#define IPv4_ADDRESS_LEN 4
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#define ETH_ADDRESS_LEN 6
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/* Hardware Types */
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#define HDR_RESERVED 0 /* [RFC5494] */
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#define HDR_ETH10MB 1 /* Ethernet (10Mb) */
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#define HDR_ETH3MB 2 /* Experimental Ethernet (3Mb) */
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#define HDR_AX25 3 /* Amateur Radio AX.25 */
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#define HDR_PRONET_TR 4 /* Proteon ProNET Token Ring */
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#define HDR_CHAOS 5 /* Chaos */
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#define HDR_IEEE802 6 /* IEEE 802 Networks */
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#define HDR_ARCNET 7 /* ARCNET [RFC1201] */
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#define HDR_HYPERCHANNEL 8 /* Hyperchannel */
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#define HDR_LANSTAR 9 /* Lanstar */
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#define HDR_AUTONET 10 /* Autonet Short Address */
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#define HDR_LOCALTALK 11 /* LocalTalk */
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#define HDR_LOCALNET 12 /* LocalNet (IBM PCNet or SYTEK LocalNET) */
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#define HDR_ULTRALINK 13 /* Ultra link */
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#define HDR_SMDS 14 /* SMDS */
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#define HDR_FRAMERELAY 15 /* Frame Relay */
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#define HDR_ATM 16 /* Asynchronous Transmission Mode (ATM) */
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#define HDR_HDLC 17 /* HDLC */
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#define HDR_FIBRE 18 /* Fibre Channel [RFC4338] */
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#define HDR_ATMb 19 /* Asynchronous Transmission Mode (ATM) */
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#define HDR_SERIAL 20 /* Serial Line */
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#define HDR_ATMc 21 /* Asynchronous Transmission Mode [RFC2225] */
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#define HDR_MILSTD 22 /* MIL-STD-188-220 */
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#define HDR_METRICOM 23 /* Metricom */
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#define HDR_IEEE1394 24 /* IEEE 1394.199 */
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#define HDR_MAPOS 25 /* MAPOS [RFC2176] */
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#define HDR_TWINAXIAL 26 /* Twinaxial */
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#define HDR_EUI64 27 /* EUI-64 */
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#define HDR_HIPARP 28 /* HIPARP */
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#define HDR_ISO7816 29 /* IP and ARP over ISO 7816-3 */
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#define HDR_ARPSEC 30 /* ARPSec */
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#define HDR_IPSEC 31 /* IPsec tunnel */
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#define HDR_INFINIBAND 32 /* InfiniBand (TM) */
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#define HDR_TIA102 33 /* TIA-102 Project 25 Common Air Interface */
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#define HDR_WIEGAND 34 /* Wiegand Interface */
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#define HDR_PUREIP 35 /* Pure IP */
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#define HDR_HW_EXP1 36 /* HW_EXP1 [RFC5494] */
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#define HDR_HW_EXP2 37 /* HW_EXP2 [RFC5494] */
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/* Operation Codes */
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#define OP_ARP_REQUEST 1 /* ARP Request */
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#define OP_ARP_REPLY 2 /* ARP Reply */
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#define OP_RARP_REQUEST 3 /* Reverse ARP Request */
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#define OP_RARP_REPLY 4 /* Reverse ARP Reply */
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#define OP_DRARP_REQUEST 5 /* DRARP-Request */
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#define OP_DRARP_REPLY 6 /* DRARP-Reply */
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#define OP_DRARP_ERROR 7 /* DRARP-Error */
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#define OP_INARP_REQUEST 8 /* InARP-Request */
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#define OP_INARP_REPLY 9 /* InARP-Reply */
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#define OP_ARPNAK 10 /* ARP-NAK */
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#define OP_MARS_REQUEST 11 /* MARS-Request */
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#define OP_MARS_MULTI 12 /* MARS-Multi */
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#define OP_MARS_MSERV 13 /* MARS-MServ */
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#define OP_MARS_JOIN 14 /* MARS-Join */
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#define OP_MARS_LEAVE 15 /* MARS-Leave */
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#define OP_MARS_NAK 16 /* MARS-NAK */
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#define OP_MARS_UNSERV 17 /* MARS-Unserv */
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#define OP_MARS_SJOIN 18 /* MARS-SJoin */
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#define OP_MARS_SLEAVE 19 /* MARS-SLeave */
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#define OP_MARS_GL_REQ 20 /* MARS-Grouplist-Request */
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#define OP_MARS_GL_REP 21 /* MARS-Grouplist-Reply */
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#define OP_MARS_REDIR_MAP 22 /* MARS-Redirect-Map */
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#define OP_MAPOS_UNARP 23 /* MAPOS-UNARP [RFC2176] */
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#define OP_EXP1 24 /* OP_EXP1 [RFC5494] */
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#define OP_EXP2 25 /* OP_EXP2 [RFC5494] */
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#define OP_RESERVED 65535 /* Reserved [RFC5494] */
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/* TODO @todo: getTargetIP() and getSenderIP() should either
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* return struct in_addr or IPAddress but not u32. */
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class ARPHeader : public NetworkLayerElement {
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private:
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struct nping_arp_hdr{
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u16 ar_hrd; /* Hardware Type. */
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u16 ar_pro; /* Protocol Type. */
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u8 ar_hln; /* Hardware Address Length. */
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u8 ar_pln; /* Protocol Address Length. */
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u16 ar_op; /* Operation Code. */
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u8 data[20];
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// Cannot use these because the four-flushing alignment screws up
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// everything. I miss ANSI C.
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//u8 ar_sha[6]; /* Sender Hardware Address. */
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//u32 ar_sip; /* Sender Protocol Address (IPv4 address). */
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//u8 ar_tha[6]; /* Target Hardware Address. */
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//u32 ar_tip; /* Target Protocol Address (IPv4 address). */
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}__attribute__((__packed__));
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typedef struct nping_arp_hdr nping_arp_hdr_t;
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nping_arp_hdr_t h;
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public:
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/* Misc */
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ARPHeader();
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~ARPHeader();
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void reset();
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u8 *getBufferPointer();
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int storeRecvData(const u8 *buf, size_t len);
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int protocol_id() const;
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int validate();
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int print(FILE *output, int detail) const;
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/* Hardware Type */
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int setHardwareType(u16 t);
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int setHardwareType();
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u16 getHardwareType();
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/* Protocol Type */
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int setProtocolType(u16 t);
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int setProtocolType();
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u16 getProtocolType();
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/* Hardware Address Length */
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int setHwAddrLen(u8 v);
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int setHwAddrLen();
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u8 getHwAddrLen();
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/* Hardware Address Length */
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int setProtoAddrLen(u8 v);
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int setProtoAddrLen();
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u8 getProtoAddrLen();
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/* Operation Code */
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int setOpCode(u16 c);
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u16 getOpCode();
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/* Sender Hardware Address */
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int setSenderMAC(const u8 *m);
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u8 *getSenderMAC();
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/* Sender Protocol address */
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int setSenderIP(struct in_addr i);
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u32 getSenderIP();
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/* Target Hardware Address */
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int setTargetMAC(u8 *m);
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u8 *getTargetMAC();
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/* Target Protocol Address */
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int setTargetIP(struct in_addr i);
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u32 getTargetIP();
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}; /* End of class ARPHeader */
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#endif /* __ARPHEADER_H__ */
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