mirror of
https://github.com/nmap/nmap.git
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202 lines
9.4 KiB
C++
202 lines
9.4 KiB
C++
/***************************************************************************
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* ICMPv6RRBody.cc -- The ICMPv6RRBody Class represents an ICMP version 6 *
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* Router Renumbering message body. It contains methods to set any header *
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* field. In general, these methods do error checkings and byte order *
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* conversions. *
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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) 1996-2025 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 redistributed
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* without special permission (such as an Nmap OEM 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, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* 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 ICMPv6RRBODY_H
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#define ICMPv6RRBODY_H 1
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#include "NetworkLayerElement.h"
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/* Packet header diagrams included in this file have been taken from the
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* following IETF RFC documents: RFC 2894 */
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/* Nping ICMPv6RRBody Class internal definitions */
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#define ICMPv6_RR_MATCH_PREFIX_LEN 24
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#define ICMPv6_RR_USE_PREFIX_LEN 32
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#define ICMPv6_RR_RESULT_MSG_LEN 24
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/* This must the MAX() of all values defined above*/
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#define ICMPv6_RR_MAX_LENGTH (ICMPv6_RR_USE_PREFIX_LEN)
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#define ICMPv6_RR_MIN_LENGTH (ICMPv6_RR_MATCH_PREFIX_LEN)
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class ICMPv6RRBody : public NetworkLayerElement {
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private:
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/**********************************************************************/
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/* COMMON ICMPv6 OPTION HEADER */
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/**********************************************************************/
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struct nping_icmpv6_rr_body{
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u8 data[ICMPv6_RR_MAX_LENGTH];
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}__attribute__((__packed__));
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typedef struct nping_icmpv6_rr_body nping_icmpv6_rr_body_t;
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/**********************************************************************/
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/* ICMPv6 OPTION FORMATS */
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/**********************************************************************/
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/* Match-Prefix Part
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| OpCode | OpLength | Ordinal | MatchLen |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| MinLen | MaxLen | reserved |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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+- -+
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+- MatchPrefix -+
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+- -+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct rr_match_prefix{
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u8 op_code;
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u8 op_length;
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u8 ordinal;
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u8 match_length;
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u8 min_length;
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u8 max_length;
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u16 reserved;
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u8 match_prefix[16];
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}__attribute__((__packed__));
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typedef struct rr_match_prefix rr_match_prefix_t;
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/* Use-Prefix Part
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| UseLen | KeepLen | FlagMask | RAFlags |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Valid Lifetime |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Preferred Lifetime |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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|V|P| reserved |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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+- -+
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+- UsePrefix -+
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+- -+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct rr_use_prefix{
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u8 use_len;
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u8 keep_len;
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u8 flag_mask;
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u8 ra_flags;
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u32 valid_lifetime;
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u32 preferred_lifetime;
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u8 flags;
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u8 reserved[3];
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u8 use_prefix[16];
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}__attribute__((__packed__));
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typedef struct rr_use_prefix rr_use_prefix_t;
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/* Result Message
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| reserved |B|F| Ordinal | MatchedLen |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| InterfaceIndex |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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+- -+
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+- MatchedPrefix -+
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+- -+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
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struct rr_result_msg{
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u8 reserved;
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u8 flags;
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u8 ordinal;
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u8 matched_length;
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u32 interface_index;
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u8 matched_prefix[16];
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}__attribute__((__packed__));
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typedef struct rr_result_msg rr_result_msg_t;
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nping_icmpv6_rr_body_t h;
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rr_match_prefix_t *h_mp;
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rr_use_prefix_t *h_up;
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rr_result_msg_t *h_r;
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public:
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ICMPv6RRBody();
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~ICMPv6RRBody();
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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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}; /* End of class ICMPv6RRBody */
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#endif
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