/*************************************************************************** * IPv6Header.h -- The IPv6Header Class represents an IPv6 datagram. 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) 1996-2022 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 IPV6HEADER_H #define IPV6HEADER_H 1 #include "NetworkLayerElement.h" #define IPv6_HEADER_LEN 40 /* Default header values */ #define IPv6_DEFAULT_TCLASS 0 #define IPv6_DEFAULT_FLABEL 0 #define IPv6_DEFAULT_HOPLIM 64 #define IPv6_DEFAULT_NXTHDR 6 /* TCP */ class IPv6Header : public NetworkLayerElement { private: /* IPv6 Header Format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Version| Traffic Class | Flow Label | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Payload Length | Next Header | Hop Limit | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | +-- --+ | | +-- Source Address --+ | | +-- --+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | +-- --+ | | +-- Destination Address --+ | | +-- --+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct nping_ipv6_hdr { u8 ip6_start[4]; /* Version, Traffic and Flow */ u16 ip6_len; /* Payload length */ u8 ip6_nh; /* Next Header */ u8 ip6_hopl; /* Hop Limit */ u8 ip6_src[16]; /* Source IP Address */ u8 ip6_dst[16]; /* Destination IP Address */ }__attribute__((__packed__)); typedef struct nping_ipv6_hdr nping_ipv6_hdr_t; nping_ipv6_hdr_t h; public: /* Misc */ IPv6Header(); ~IPv6Header(); 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; /* IP version */ int setVersion(); int setVersion(u8 val); u8 getVersion() const; /* Traffic class */ int setTrafficClass(u8 val); u8 getTrafficClass() const; /* Flow Label */ int setFlowLabel(u32 val); u32 getFlowLabel() const; /* Payload Length */ int setPayloadLength(u16 val); int setPayloadLength(); u16 getPayloadLength() const; /* Next Header */ int setNextHeader(u8 val); int setNextHeader(const char *p); u8 getNextHeader() const; /* Hop Limit */ int setHopLimit(u8 val); u8 getHopLimit() const; /* Source Address */ int setSourceAddress(u8 *val); int setSourceAddress(struct in6_addr val); const u8 *getSourceAddress() const; struct in6_addr getSourceAddress(struct in6_addr *result) const; /* Destination Address*/ int setDestinationAddress(u8 *val); int setDestinationAddress(struct in6_addr val); const u8 *getDestinationAddress() const; struct in6_addr getDestinationAddress(struct in6_addr *result) const; u16 getAddressLength() const; }; #endif