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nmap/libnetutil/ICMPv6Header.h
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/***************************************************************************
* ICMPv6Header.h -- The ICMPv6Header Class represents an ICMP version 6 *
* packet. 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) 1996-2025 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 ICMPv6HEADER_H
#define ICMPv6HEADER_H 1
#include "ICMPHeader.h"
/******************************************************************************/
/* IMPORTANT INFORMATION ON HOW TO USE THIS CLASS. */
/******************************************************************************/
/* This class represents an ICMPv6 messages. ICMPv6 messages may be of
* different types. Each type has its own header and possibly a variable
* length data field. Information messages have an "invoking packet" field
* which is the IP packet that triggered the emission of the ICMPv6 message.
* Other messages may contain a "data" field, like echo requests an replies.
* Some others may contain ICMPv6 Options.
*
* So the thing is, that this class only represents fixed-length ICMPv6
* headers and does NOT offer storage for ANY variable-length field. This
* fields may be added to the ICMPv6 header using instances of the RawData
* class the ICMPv6Option class or even the IPv6Header class (in those cases
* where a whole packet is appendend to the ICMPv6 message).
*
* So, how does this work? Let's look at some examples.
*
* 1. Imagine we need to build an ICMP echo request message that includes some
* arbitrary data to be echoed. We could do the following:
*
* u8 final_packet[1024]; <-- Buffer to store the resulting packet
* u32 final_packet_len=0; <-- Length of the resulting packet
* ICMPv6Header header; <-- The ICMPv6 fixed-length part
* RawData data; <-- The data to append to the echo message
*
* header.setType(ICMPv6_ECHO); <-- Set ICMPv6 type to "Echo request"
* data.store("1234567890"); <-- Store data we need to send.
* header.setNextElement(&data); <-- Tell ICMPv6Header what's after it
* header.setSum(); <-- Compute the checksum
*
* final_packet_len=header.dumpToBinaryBuffer(fina_packet, 1024);
* send_packet(final_packet, final_packet_len)
*
* 2. If we are sending a parameter problem message and we need to include the
* invoking datagram, we can call setNextElement() passing an IPv6Header
* pointer.
*
* u8 final_packet[1024]; <-- Buffer to store the resulting packet
* u32 final_packet_len=0; <-- Length of the resulting packet
* ICMPv6Header header; <-- The ICMPv6 fixed-length part
* IPv6Header ipv6; <-- The IPv6 packet that triggered ICMPv6
*
* header.setType(ICMPv6_PARAMPROB); <-- Set ICMPv6 type to "Param Problem"
* header.setNextElement(&ipv6); <-- Tell ICMPv6Header what's after it
* header.setSum(); <-- Compute the checksum
*
* Note that here we don't show how the ipv6 object is set.
*
* 3. If we are sending a router solicitation message, we'll call
* setNextElement() passing an IPv6Options Pointer.
*
* u8 final_packet[1024]; <-- Buffer to store the resulting packet
* u32 final_packet_len=0; <-- Length of the resulting packet
* ICMPv6Header header; <-- The ICMPv6 fixed-length part
* IPv6Options opts1; <-- IPv6 options
* IPv6Options opts2; <-- IPv6 options
* IPv6Options opts3; <-- IPv6 options
*
* header.setType(ICMPv6_ROUTERSOLICIT); <-- Set ICMPv6 type
*
* opts1.setXXXX(); <-- Set up the options
* .
* .
* .
* opts3.setYYYY();
*
* opts2.setNextElement(&opts3); <-- Link the options
* opts1.setNextElement(&opts2);
* header.setNextElement(&opts1);
* header.setNextElement(&ipv6); <-- Link the first option to the ICMPv6
* header.setSum(); <-- Compute the checksum
*
* And so on...
*
*/
/* Packet header diagrams included in this file have been taken from the
* following IETF RFC documents: RFC 4443, RFC 2461, RFC 2894 */
/* ICMP types and codes.
* The following types and codes have been defined by IANA. A complete list
* may be found at http://www.iana.org/assignments/icmpv6-parameters
*
* Definitions on the first level of indentation are ICMPv6 Types.
* Definitions on the second level of indentation (values enclosed in
* parenthesis) are ICMPv6 Codes */
#define ICMPv6_UNREACH 1 /* Destination unreachable [RFC 2463, 4443] */
#define ICMPv6_UNREACH_NO_ROUTE (0) /* --> No route to destination */
#define ICMPv6_UNREACH_PROHIBITED (1) /* --> Communication administratively prohibited */
#define ICMPv6_UNREACH_BEYOND_SCOPE (2) /* --> Beyond scope of source address [RFC4443] */
#define ICMPv6_UNREACH_ADDR_UNREACH (3) /* --> Address unreachable */
#define ICMPv6_UNREACH_PORT_UNREACH (4) /* --> Port unreachable */
#define ICMPv6_UNREACH_SRC_ADDR_FAILED (5) /* --> Source address failed ingress/egress policy [RFC4443] */
#define ICMPv6_UNREACH_REJECT_ROUTE (6) /* --> Reject route to destination [RFC4443] */
#define ICMPv6_PKTTOOBIG 2 /* Packet too big [RFC 2463, 4443] */
#define ICMPv6_TIMXCEED 3 /* Time exceeded [RFC 2463, 4443] */
#define ICMPv6_TIMXCEED_HOP_EXCEEDED (0) /* --> Hop limit exceeded in transit */
#define ICMPv6_TIMXCEED_REASS_EXCEEDED (1) /* --> Fragment reassembly time exceeded */
#define ICMPv6_PARAMPROB 4 /* Parameter problem [RFC 2463, 4443] */
#define ICMPv6_PARAMPROB_FIELD (0) /* --> Erroneous header field encountered */
#define ICMPv6_PARAMPROB_NEXT_HDR (1) /* --> Unrecognized Next Header type encountered */
#define ICMPv6_PARAMPROB_OPTION (2) /* --> Unrecognized IPv6 option encountered */
#define ICMPv6_ECHO 128 /* Echo request [RFC 2463, 4443] */
#define ICMPv6_ECHOREPLY 129 /* Echo reply [RFC 2463, 4443] */
#define ICMPv6_GRPMEMBQUERY 130 /* Group Membership Query [RFC 2710] */
#define ICMPv6_GRPMEMBREP 131 /* Group Membership Report [RFC 2710] */
#define ICMPv6_GRPMEMBRED 132 /* Group Membership Reduction [RFC 2710] */
#define ICMPv6_ROUTERSOLICIT 133 /* Router Solicitation [RFC 2461] */
#define ICMPv6_ROUTERADVERT 134 /* Router Advertisement [RFC 2461] */
#define ICMPv6_NGHBRSOLICIT 135 /* Neighbor Solicitation [RFC 2461] */
#define ICMPv6_NGHBRADVERT 136 /* Neighbor Advertisement [RFC 2461] */
#define ICMPv6_REDIRECT 137 /* Redirect [RFC 2461] */
#define ICMPv6_RTRRENUM 138 /* Router Renumbering [RFC 2894] */
#define ICMPv6_RTRRENUM_COMMAND (0) /* --> Router Renumbering Command */
#define ICMPv6_RTRRENUM_RESULT (1) /* --> Router Renumbering Result */
#define ICMPv6_RTRRENUM_SEQ_RESET (255) /* Sequence Number Reset */
#define ICMPv6_NODEINFOQUERY 139 /* ICMP Node Information Query [RFC 4620] */
#define ICMPv6_NODEINFOQUERY_IPv6ADDR (0) /* --> The Data field contains an IPv6 address */
#define ICMPv6_NODEINFOQUERY_NAME (1) /* --> The Data field contains a name */
#define ICMPv6_NODEINFOQUERY_IPv4ADDR (2) /* --> The Data field contains an IPv4 address */
#define ICMPv6_NODEINFORESP 140 /* ICMP Node Information Response [RFC 4620] */
#define ICMPv6_NODEINFORESP_SUCCESS (0) /* --> A successful reply. */
#define ICMPv6_NODEINFORESP_REFUSED (1) /* --> The Responder refuses to supply the answer */
#define ICMPv6_NODEINFORESP_UNKNOWN (2) /* --> The Qtype of the Query is unknown */
#define ICMPv6_INVNGHBRSOLICIT 141 /* Inverse Neighbor Discovery Solicitation Message [RFC 3122] */
#define ICMPv6_INVNGHBRADVERT 142 /* Inverse Neighbor Discovery Advertisement Message [RFC 3122] */
#define ICMPv6_MLDV2 143 /* MLDv2 Multicast Listener Report [RFC 3810] */
#define ICMPv6_AGENTDISCOVREQ 144 /* Home Agent Address Discovery Request Message [RFC 3775] */
#define ICMPv6_AGENTDISCOVREPLY 145 /* Home Agent Address Discovery Reply Message [RFC 3775] */
#define ICMPv6_MOBPREFIXSOLICIT 146 /* Mobile Prefix Solicitation [RFC 3775] */
#define ICMPv6_MOBPREFIXADVERT 147 /* Mobile Prefix Advertisement [RFC 3775] */
#define ICMPv6_CERTPATHSOLICIT 148 /* Certification Path Solicitation [RFC 3971] */
#define ICMPv6_CERTPATHADVERT 149 /* Certification Path Advertisement [RFC 3971] */
#define ICMPv6_EXPMOBILITY 150 /* Experimental mobility protocols [RFC 4065] */
#define ICMPv6_MRDADVERT 151 /* MRD, Multicast Router Advertisement [RFC 4286] */
#define ICMPv6_MRDSOLICIT 152 /* MRD, Multicast Router Solicitation [RFC 4286] */
#define ICMPv6_MRDTERMINATE 153 /* MRD, Multicast Router Termination [RFC 4286] */
#define ICMPv6_FMIPV6 154 /* FMIPv6 messages [RFC 5568] */
/* Node Information parameters */
/* -> Query types */
#define NI_QTYPE_NOOP 0
#define NI_QTYPE_UNUSED 1
#define NI_QTYPE_NODENAME 2
#define NI_QTYPE_NODEADDRS 3
#define NI_QTYPE_IPv4ADDRS 4
/* -> Misc */
#define NI_NONCE_LEN 8
/* Nping ICMPv6Header Class internal definitions */
#define ICMPv6_COMMON_HEADER_LEN 4
#define ICMPv6_MIN_HEADER_LEN 8
#define ICMPv6_UNREACH_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_PKTTOOBIG_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_TIMXCEED_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_PARAMPROB_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_ECHO_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_ECHOREPLY_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_ROUTERSOLICIT_LEN (ICMPv6_COMMON_HEADER_LEN+4)
#define ICMPv6_ROUTERADVERT_LEN (ICMPv6_COMMON_HEADER_LEN+12)
#define ICMPv6_NGHBRSOLICIT_LEN (ICMPv6_COMMON_HEADER_LEN+20)
#define ICMPv6_NGHBRADVERT_LEN (ICMPv6_COMMON_HEADER_LEN+20)
#define ICMPv6_REDIRECT_LEN (ICMPv6_COMMON_HEADER_LEN+36)
#define ICMPv6_RTRRENUM_LEN (ICMPv6_COMMON_HEADER_LEN+12)
#define ICMPv6_NODEINFO_LEN (ICMPv6_COMMON_HEADER_LEN+12)
#define ICMPv6_MLD_LEN (ICMPv6_COMMON_HEADER_LEN+20)
/* This must the MAX() of all values defined above*/
#define ICMPv6_MAX_MESSAGE_BODY (ICMPv6_REDIRECT_LEN-ICMPv6_COMMON_HEADER_LEN)
/* Node Information flag bitmaks */
#define ICMPv6_NI_FLAG_T 0x01
#define ICMPv6_NI_FLAG_A 0x02
#define ICMPv6_NI_FLAG_C 0x04
#define ICMPv6_NI_FLAG_L 0x08
#define ICMPv6_NI_FLAG_G 0x10
#define ICMPv6_NI_FLAG_S 0x20
class ICMPv6Header : public ICMPHeader {
/**********************************************************************/
/* COMMON ICMPv6 packet HEADER */
/**********************************************************************/
/* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ Message Body +
| | */
struct nping_icmpv6_hdr{
u8 type;
u8 code;
u16 checksum;
u8 data[ICMPv6_MAX_MESSAGE_BODY];
}__attribute__((__packed__));
typedef struct nping_icmpv6_hdr nping_icmpv6_hdr_t;
/**********************************************************************/
/* ICMPv6 MESSAGE SPECIFIC HEADERS */
/**********************************************************************/
/* Destination Unreachable Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Unused |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| As much of invoking packet |
+ as possible without the ICMPv6 packet +
| exceeding the minimum IPv6 MTU [IPv6] | */
struct dest_unreach_msg{
u32 unused;
//u8 invoking_pkt[?];
}__attribute__((__packed__));
typedef struct dest_unreach_msg dest_unreach_msg_t;
/* Packet Too Big Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MTU |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| As much of invoking packet |
+ as possible without the ICMPv6 packet +
| exceeding the minimum IPv6 MTU [IPv6] | */
struct pkt_too_big_msg{
u32 mtu;
//u8 invoking_pkt[?];
}__attribute__((__packed__));
typedef struct pkt_too_big_msg pkt_too_big_msg_t;
/* Time Exceeded Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Unused |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| As much of invoking packet |
+ as possible without the ICMPv6 packet +
| exceeding the minimum IPv6 MTU [IPv6] | */
struct time_exceeded_msg{
u32 unused;
//u8 invoking_pkt[?];
}__attribute__((__packed__));
typedef struct time_exceeded_msg time_exceeded_msg_t;
/* Parameter Problem Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Pointer |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| As much of invoking packet |
+ as possible without the ICMPv6 packet +
| exceeding the minimum IPv6 MTU [IPv6] | */
struct parameter_problem_msg{
u32 pointer;
//u8 invoking_pkt[?];
}__attribute__((__packed__));
typedef struct parameter_problem_msg parameter_problem_msg_t;
/* Echo Request/Response Messages
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Identifier | Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Data ...
+-+-+-+-+- */
struct echo_msg{
u16 id;
u16 seq;
//u8 data[?];
}__attribute__((__packed__));
typedef struct echo_msg echo_msg_t;
/* Router Advertisement Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Cur Hop Limit |M|O|H|Prf|P|R|R| Router Lifetime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reachable Time |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Retrans Timer |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options ...
+-+-+-+-+-+-+-+-+-+-+-+- */
struct router_advert_msg{
u8 current_hop_limit;
u8 autoconfig_flags; /* See RFC 5175 */
u16 router_lifetime;
u32 reachable_time;
u32 retransmission_timer;
//u8 icmpv6_options[?];
}__attribute__((__packed__));
typedef struct router_advert_msg router_advert_msg_t;
/* Router Solicitation Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options ...
+-+-+-+-+-+-+-+-+-+-+-+- */
struct router_solicit_msg{
u32 reserved;
//u8 icmpv6_options[?];
}__attribute__((__packed__));
typedef struct router_solicit_msg router_solicit_msg_t;
/* Neighbor Advertisement Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|R|S|O| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Target Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options ...
+-+-+-+-+-+-+-+-+-+-+-+- */
struct neighbor_advert_msg{
u8 flags;
u8 reserved[3];
u8 target_address[16];
//u8 icmpv6_options[?];
}__attribute__((__packed__));
typedef struct neighbor_advert_msg neighbor_advert_msg_t;
/* Neighbor Solicitation Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Target Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options ...
+-+-+-+-+-+-+-+-+-+-+-+- */
struct neighbor_solicit_msg{
u32 reserved;
u8 target_address[16];
//u8 icmpv6_options[?];
}__attribute__((__packed__));
typedef struct neighbor_solicit_msg neighbor_solicit_msg_t;
/* Redirect Message
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Target Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Destination Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options ...
+-+-+-+-+-+-+-+-+-+-+-+- */
struct redirect_msg{
u32 reserved;
u8 target_address[16];
u8 destination_address[16];
//u8 icmpv6_options[?];
}__attribute__((__packed__));
typedef struct redirect_msg redirect_msg_t;
/* Router Renumbering Header
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SequenceNumber |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SegmentNumber | Flags | MaxDelay |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
/ RR Message Body /
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
struct router_renumbering_msg{
u32 seq;
u8 segment_number;
u8 flags;
u16 max_delay;
u32 reserved;
//u8 rr_msg_body[?];
}__attribute__((__packed__));
typedef struct router_renumbering_msg router_renumbering_msg_t;
/* Node Information Queries
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Qtype | unused |G|S|L|C|A|T|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ Nonce +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
/ Data /
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
struct nodeinfo_msg{
u16 qtype;
u16 flags;
u64 nonce;
//u8 data[?];
}__attribute__((__packed__));
typedef struct nodeinfo_msg nodeinfo_msg_t;
/* Multicast Listener Discovery
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Maximum Response Delay | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Multicast Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
struct mld_msg{
u16 max_response_delay;
u16 reserved;
u8 mcast_address[16];
}__attribute__((__packed__));
typedef struct mld_msg mld_msg_t;
nping_icmpv6_hdr_t h;
/* Helper pointers */
dest_unreach_msg_t *h_du;
pkt_too_big_msg_t *h_ptb;
time_exceeded_msg_t *h_te;
parameter_problem_msg_t *h_pp;
echo_msg_t *h_e;
router_advert_msg_t *h_ra;
router_solicit_msg_t *h_rs;
neighbor_advert_msg_t *h_na;
neighbor_solicit_msg_t *h_ns;
redirect_msg_t *h_r;
router_renumbering_msg_t *h_rr;
nodeinfo_msg_t *h_ni;
mld_msg_t *h_mld;
public:
ICMPv6Header();
~ICMPv6Header();
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;
/* ICMP Type */
int setType(u8 val);
u8 getType() const;
bool validateType();
bool validateType(u8 val);
/* Code */
int setCode(u8 c);
u8 getCode() const;
bool validateCode();
bool validateCode(u8 type, u8 code);
/* Checksum */
int setSum();
int setSum(u16 s);
int setSumRandom();
u16 getSum() const;
int setReserved(u32 val);
u32 getReserved() const;
int setUnused(u32 val);
u32 getUnused() const;
int setFlags(u8 val);
u8 getFlags() const;
int setMTU(u32 mtu);
u32 getMTU() const;
/* Parameter problem */
int setPointer(u32 val);
u32 getPointer() const;
/* Echo */
int setIdentifier(u16 val);
u16 getIdentifier() const;
int setSequence(u16 val);
int setSequence(u32 val);
u32 getSequence() const;
/* Router Advertisement */
int setCurrentHopLimit(u8 val);
u8 getCurrentHopLimit() const;
int setRouterLifetime(u16 val);
u16 getRouterLifetime() const;
int setReachableTime(u32 val);
u32 getReachableTime() const;
int setRetransmissionTimer(u32 val);
u32 getRetransmissionTimer() const;
int setTargetAddress(struct in6_addr addr);
struct in6_addr getTargetAddress() const;
int setDestinationAddress(struct in6_addr addr);
struct in6_addr getDestinationAddress() const;
int setSegmentNumber(u8 val);
u8 getSegmentNumber() const;
int setMaxDelay(u16 val);
u16 getMaxDelay() const;
/* Node Information Queries */
int setQtype(u16 val);
u16 getQtype() const;
int setNodeInfoFlags(u16 val);
u16 getNodeInfoFlags() const;
int setG(bool flag_value=true);
bool getG() const;
int setS(bool flag_value=true);
bool getS() const;
int setL(bool flag_value=true);
bool getL() const;
int setC(bool flag_value=true);
bool getC() const;
int setA(bool flag_value=true);
bool getA() const;
int setT(bool flag_value=true);
bool getT() const;
int setNonce(u64 nonce_value);
int setNonce(const u8 *nonce);
u64 getNonce() const;
/* Multicast Listener Discovery */
int setMulticastAddress(struct in6_addr addr);
struct in6_addr getMulticastAddress() const;
/* Misc */
int getHeaderLengthFromType(u8 type) const;
bool isError() const;
const char *type2string(int type, int code) const;
}; /* End of class ICMPv6Header */
#endif
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