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https://github.com/nmap/nmap.git
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176 lines
8.8 KiB
C++
176 lines
8.8 KiB
C++
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/***************************************************************************
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* IPv6Header.h -- The IPv6Header Class represents an IPv6 datagram. 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) 1996-2022 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 *
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* redistributed without special permission (such as an Nmap OEM *
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* 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, *
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* and add new features. You are highly encouraged to submit your *
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* changes as a Github PR or by email to the dev@nmap.org mailing list *
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* for possible incorporation into the main distribution. Unless you *
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* specify otherwise, it is understood that you are offering us very *
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* broad rights to use your submissions as described in the Nmap Public *
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* Source License Contributor Agreement. This is important because we *
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* fund the project by selling licenses with various terms, and also *
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* because the inability to relicense code has caused devastating *
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* problems for other Free Software projects (such as KDE 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 IPV6HEADER_H
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#define IPV6HEADER_H 1
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#include "NetworkLayerElement.h"
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#define IPv6_HEADER_LEN 40
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/* Default header values */
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#define IPv6_DEFAULT_TCLASS 0
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#define IPv6_DEFAULT_FLABEL 0
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#define IPv6_DEFAULT_HOPLIM 64
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#define IPv6_DEFAULT_NXTHDR 6 /* TCP */
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class IPv6Header : public NetworkLayerElement {
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private:
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/* IPv6 Header Format:
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0 1 2 3
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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|Version| Traffic Class | Flow Label |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Payload Length | Next Header | Hop Limit |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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+-- --+
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+-- Source Address --+
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+-- --+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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+-- --+
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+-- Destination Address --+
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+-- --+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct nping_ipv6_hdr {
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u8 ip6_start[4]; /* Version, Traffic and Flow */
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u16 ip6_len; /* Payload length */
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u8 ip6_nh; /* Next Header */
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u8 ip6_hopl; /* Hop Limit */
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u8 ip6_src[16]; /* Source IP Address */
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u8 ip6_dst[16]; /* Destination IP Address */
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}__attribute__((__packed__));
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typedef struct nping_ipv6_hdr nping_ipv6_hdr_t;
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nping_ipv6_hdr_t h;
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public:
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/* Misc */
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IPv6Header();
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~IPv6Header();
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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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/* IP version */
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int setVersion();
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int setVersion(u8 val);
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u8 getVersion() const;
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/* Traffic class */
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int setTrafficClass(u8 val);
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u8 getTrafficClass() const;
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/* Flow Label */
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int setFlowLabel(u32 val);
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u32 getFlowLabel() const;
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/* Payload Length */
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int setPayloadLength(u16 val);
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int setPayloadLength();
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u16 getPayloadLength() const;
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/* Next Header */
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int setNextHeader(u8 val);
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int setNextHeader(const char *p);
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u8 getNextHeader() const;
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/* Hop Limit */
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int setHopLimit(u8 val);
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u8 getHopLimit() const;
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/* Source Address */
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int setSourceAddress(u8 *val);
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int setSourceAddress(struct in6_addr val);
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const u8 *getSourceAddress() const;
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struct in6_addr getSourceAddress(struct in6_addr *result) const;
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/* Destination Address*/
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int setDestinationAddress(u8 *val);
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int setDestinationAddress(struct in6_addr val);
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const u8 *getDestinationAddress() const;
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struct in6_addr getDestinationAddress(struct in6_addr *result) const;
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u16 getAddressLength() const;
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};
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#endif
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