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/***************************************************************************
* 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) 1996-2023 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 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
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