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Diffstat (limited to 'libnetutil/IPv6Header.h')
| -rw-r--r-- | libnetutil/IPv6Header.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/libnetutil/IPv6Header.h b/libnetutil/IPv6Header.h new file mode 100644 index 0000000..4932923 --- /dev/null +++ b/libnetutil/IPv6Header.h @@ -0,0 +1,172 @@ +/*************************************************************************** + * 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) 1996-2023 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 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 |