/*************************************************************************** * 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) 1996-2024 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__ */