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/***************************************************************************
* ICMPv6RRBody.cc -- The ICMPv6RRBody Class represents an ICMP version 6 *
* Router Renumbering message body. It contains methods to set any header *
* field. In general, these methods do error checkings 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 ICMPv6RRBODY_H
#define ICMPv6RRBODY_H 1
#include "NetworkLayerElement.h"
/* Packet header diagrams included in this file have been taken from the
* following IETF RFC documents: RFC 2894 */
/* Nping ICMPv6RRBody Class internal definitions */
#define ICMPv6_RR_MATCH_PREFIX_LEN 24
#define ICMPv6_RR_USE_PREFIX_LEN 32
#define ICMPv6_RR_RESULT_MSG_LEN 24
/* This must the MAX() of all values defined above*/
#define ICMPv6_RR_MAX_LENGTH (ICMPv6_RR_USE_PREFIX_LEN)
#define ICMPv6_RR_MIN_LENGTH (ICMPv6_RR_MATCH_PREFIX_LEN)
class ICMPv6RRBody : public NetworkLayerElement {
private:
/**********************************************************************/
/* COMMON ICMPv6 OPTION HEADER */
/**********************************************************************/
struct nping_icmpv6_rr_body{
u8 data[ICMPv6_RR_MAX_LENGTH];
}__attribute__((__packed__));
typedef struct nping_icmpv6_rr_body nping_icmpv6_rr_body_t;
/**********************************************************************/
/* ICMPv6 OPTION FORMATS */
/**********************************************************************/
/* Match-Prefix Part
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OpCode | OpLength | Ordinal | MatchLen |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MinLen | MaxLen | reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+- -+
| |
+- MatchPrefix -+
| |
+- -+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct rr_match_prefix{
u8 op_code;
u8 op_length;
u8 ordinal;
u8 match_length;
u8 min_length;
u8 max_length;
u16 reserved;
u8 match_prefix[16];
}__attribute__((__packed__));
typedef struct rr_match_prefix rr_match_prefix_t;
/* Use-Prefix Part
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| UseLen | KeepLen | FlagMask | RAFlags |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Valid Lifetime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Preferred Lifetime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|V|P| reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+- -+
| |
+- UsePrefix -+
| |
+- -+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct rr_use_prefix{
u8 use_len;
u8 keep_len;
u8 flag_mask;
u8 ra_flags;
u32 valid_lifetime;
u32 preferred_lifetime;
u8 flags;
u8 reserved[3];
u8 use_prefix[16];
}__attribute__((__packed__));
typedef struct rr_use_prefix rr_use_prefix_t;
/* Result Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| reserved |B|F| Ordinal | MatchedLen |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| InterfaceIndex |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+- -+
| |
+- MatchedPrefix -+
| |
+- -+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
struct rr_result_msg{
u8 reserved;
u8 flags;
u8 ordinal;
u8 matched_length;
u32 interface_index;
u8 matched_prefix[16];
}__attribute__((__packed__));
typedef struct rr_result_msg rr_result_msg_t;
nping_icmpv6_rr_body_t h;
rr_match_prefix_t *h_mp;
rr_use_prefix_t *h_up;
rr_result_msg_t *h_r;
public:
ICMPv6RRBody();
~ICMPv6RRBody();
void reset();
u8 *getBufferPointer();
int storeRecvData(const u8 *buf, size_t len);
}; /* End of class ICMPv6RRBody */
#endif
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