/*************************************************************************** * 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) 1996-2016 Insecure.Com LLC ("The Nmap * * Project"). Nmap is also a registered trademark of the Nmap Project. * * This program is free software; you may redistribute and/or modify it * * under the terms of the GNU General Public License as published by the * * Free Software Foundation; Version 2 ("GPL"), BUT ONLY WITH ALL OF THE * * CLARIFICATIONS AND EXCEPTIONS DESCRIBED HEREIN. This guarantees your * * right to use, modify, and redistribute this software under certain * * conditions. If you wish to embed Nmap technology into proprietary * * software, we sell alternative licenses (contact sales@nmap.com). * * Dozens of software vendors already license Nmap technology such as * * host discovery, port scanning, OS detection, version detection, and * * the Nmap Scripting Engine. * * * * Note that the GPL places important restrictions on "derivative works", * * yet it does not provide a detailed definition of that term. To avoid * * misunderstandings, we interpret that term as broadly as copyright law * * allows. For example, we consider an application to constitute a * * derivative work for the purpose of this license if it does any of the * * following with any software or content covered by this license * * ("Covered Software"): * * * * o Integrates source code from Covered Software. * * * * o Reads or includes copyrighted data files, such as Nmap's nmap-os-db * * or nmap-service-probes. * * * * o Is designed specifically to execute Covered Software and parse the * * results (as opposed to typical shell or execution-menu apps, which will * * execute anything you tell them to). * * * * o Includes Covered Software in a proprietary executable installer. The * * installers produced by InstallShield are an example of this. Including * * Nmap with other software in compressed or archival form does not * * trigger this provision, provided appropriate open source decompression * * or de-archiving software is widely available for no charge. For the * * purposes of this license, an installer is considered to include Covered * * Software even if it actually retrieves a copy of Covered Software from * * another source during runtime (such as by downloading it from the * * Internet). * * * * o Links (statically or dynamically) to a library which does any of the * * above. * * * * o Executes a helper program, module, or script to do any of the above. * * * * This list is not exclusive, but is meant to clarify our interpretation * * of derived works with some common examples. Other people may interpret * * the plain GPL differently, so we consider this a special exception to * * the GPL that we apply to Covered Software. Works which meet any of * * these conditions must conform to all of the terms of this license, * * particularly including the GPL Section 3 requirements of providing * * source code and allowing free redistribution of the work as a whole. * * * * As another special exception to the GPL terms, the Nmap Project grants * * permission to link the code of this program with any version of the * * OpenSSL library which is distributed under a license identical to that * * listed in the included docs/licenses/OpenSSL.txt file, and distribute * * linked combinations including the two. * * * * The Nmap Project has permission to redistribute Npcap, a packet * * capturing driver and library for the Microsoft Windows platform. * * Npcap is a separate work with it's own license rather than this Nmap * * license. Since the Npcap license does not permit redistribution * * without special permission, our Nmap Windows binary packages which * * contain Npcap may not be redistributed without special permission. * * * * Any redistribution of Covered Software, including any derived works, * * must obey and carry forward all of the terms of this license, including * * obeying all GPL rules and restrictions. For example, source code of * * the whole work must be provided and free redistribution must be * * allowed. All GPL references to "this License", are to be treated as * * including the terms and conditions of this license text as well. * * * * Because this license imposes special exceptions to the GPL, Covered * * Work may not be combined (even as part of a larger work) with plain GPL * * software. The terms, conditions, and exceptions of this license must * * be included as well. This license is incompatible with some other open * * source licenses as well. In some cases we can relicense portions of * * Nmap or grant special permissions to use it in other open source * * software. Please contact fyodor@nmap.org with any such requests. * * Similarly, we don't incorporate incompatible open source software into * * Covered Software without special permission from the copyright holders. * * * * If you have any questions about the licensing restrictions on using * * Nmap in other works, are happy to help. As mentioned above, we also * * offer alternative license to integrate Nmap into proprietary * * applications and appliances. These contracts have been sold to dozens * * of software vendors, and generally include a perpetual license as well * * as providing for priority support and updates. They also fund the * * continued development of Nmap. Please email sales@nmap.com for further * * information. * * * * If you have received a written license agreement or contract for * * Covered Software stating terms other than these, you may choose to use * * and redistribute Covered Software under those terms instead of these. * * * * 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 send your changes * * to the dev@nmap.org mailing list for possible incorporation into the * * main distribution. By sending these changes to Fyodor or one of the * * Insecure.Org development mailing lists, or checking them into the Nmap * * source code repository, it is understood (unless you specify * * otherwise) that you are offering the Nmap Project the unlimited, * * non-exclusive right to reuse, modify, and relicense the code. Nmap * * will always be available Open Source, but this is important because * * the inability to relicense code has caused devastating problems for * * other Free Software projects (such as KDE and NASM). We also * * occasionally relicense the code to third parties as discussed above. * * If you wish to specify special license conditions of your * * contributions, just say so when you send them. * * * * This program 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. See the Nmap * * license file for more details (it's in a COPYING file included with * * Nmap, and also available from https://svn.nmap.org/nmap/COPYING) * * * ***************************************************************************/ /* 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