/*************************************************************************** * EthernetHeader.h -- The EthernetHeader Class represents an Ethernet * * header and footer. It contains methods to set the different header * * fields. These methods tipically perform the necessary error checks and * * byte order conversions. * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2022 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 ETHERNETHEADER_H #define ETHERNETHEADER_H 1 #include "DataLinkLayerElement.h" /* Ether Types. (From RFC 5342 http://www.rfc-editor.org/rfc/rfc5342.txt) */ #define ETHTYPE_IPV4 0x0800 /* Internet Protocol Version 4 */ #define ETHTYPE_ARP 0x0806 /* Address Resolution Protocol */ #define ETHTYPE_FRAMERELAY 0x0808 /* Frame Relay ARP */ #define ETHTYPE_PPTP 0x880B /* Point-to-Point Tunneling Protocol */ #define ETHTYPE_GSMP 0x880C /* General Switch Management Protocol */ #define ETHTYPE_RARP 0x8035 /* Reverse Address Resolution Protocol */ #define ETHTYPE_IPV6 0x86DD /* Internet Protocol Version 6 */ #define ETHTYPE_MPLS 0x8847 /* MPLS */ #define ETHTYPE_MPS_UAL 0x8848 /* MPLS with upstream-assigned label */ #define ETHTYPE_MCAP 0x8861 /* Multicast Channel Allocation Protocol */ #define ETHTYPE_PPPOE_D 0x8863 /* PPP over Ethernet Discovery Stage */ #define ETHTYPE_PPOE_S 0x8864 /* PPP over Ethernet Session Stage */ #define ETHTYPE_CTAG 0x8100 /* Customer VLAN Tag Type */ #define ETHTYPE_EPON 0x8808 /* Ethernet Passive Optical Network */ #define ETHTYPE_PBNAC 0x888E /* Port-based network access control */ #define ETHTYPE_STAG 0x88A8 /* Service VLAN tag identifier */ #define ETHTYPE_ETHEXP1 0x88B5 /* Local Experimental Ethertype */ #define ETHTYPE_ETHEXP2 0x88B6 /* Local Experimental Ethertype */ #define ETHTYPE_ETHOUI 0x88B7 /* OUI Extended Ethertype */ #define ETHTYPE_PREAUTH 0x88C7 /* Pre-Authentication */ #define ETHTYPE_LLDP 0x88CC /* Link Layer Discovery Protocol (LLDP) */ #define ETHTYPE_MACSEC 0x88E5 /* Media Access Control Security */ #define ETHTYPE_MVRP 0x88F5 /* Multiple VLAN Registration Protocol */ #define ETHTYPE_MMRP 0x88F6 /* Multiple Multicast Registration Protocol */ #define ETHTYPE_FRRR 0x890D /* Fast Roaming Remote Request */ #define ETH_HEADER_LEN 14 class EthernetHeader : public DataLinkLayerElement { private: struct nping_eth_hdr{ u8 eth_dmac[6]; u8 eth_smac[6]; u16 eth_type; }__attribute__((__packed__)); typedef struct nping_eth_hdr nping_eth_hdr_t; nping_eth_hdr_t h; public: EthernetHeader(); ~EthernetHeader(); 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; int setSrcMAC(const u8 *m); const u8 *getSrcMAC() const; int setDstMAC(u8 *m); const u8 *getDstMAC() const; int setEtherType(u16 val); u16 getEtherType() const; }; #endif