/*************************************************************************** * ICMPv6Option.h -- The ICMPv6Option Class represents an ICMP version 6 * * option. 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) 1996-2012 Insecure.Com LLC. Nmap is * * also a registered trademark of Insecure.Com LLC. 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 with the clarifications and exceptions described * * below. 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@insecure.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 "derived 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: * * o Integrates source code from Nmap * * o Reads or includes Nmap copyrighted data files, such as * * nmap-os-db or nmap-service-probes. * * o Executes Nmap and parses the results (as opposed to typical shell or * * execution-menu apps, which simply display raw Nmap output and so are * * not derivative works.) * * o Integrates/includes/aggregates Nmap into a proprietary executable * * installer, such as those produced by InstallShield. * * o Links to a library or executes a program that does any of the above * * * * The term "Nmap" should be taken to also include any portions or derived * * works of Nmap, as well as other software we distribute under this * * license such as Zenmap, Ncat, and Nping. This list is not exclusive, * * but is meant to clarify our interpretation of derived works with some * * common examples. 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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 (Insecure.Com LLC) 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 GNU * * General Public License v2.0 for more details at * * http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file * * included with Nmap. * * * ***************************************************************************/ /* This code was originally part of the Nping tool. */ #ifndef __ICMPv6OPTION_H__ #define __ICMPv6OPTION_H__ 1 #include "NetworkLayerElement.h" /* Packet header diagrams included in this file have been taken from the * following IETF RFC documents: RFC 2461, RFC 2894 */ /* The following codes have been defined by IANA. A complete list may be found * at http://www.iana.org/assignments/icmpv6-parameters */ /* ICMPv6 Option Types */ #define ICMPv6_OPTION_SRC_LINK_ADDR 1 #define ICMPv6_OPTION_TGT_LINK_ADDR 2 #define ICMPv6_OPTION_PREFIX_INFO 3 #define ICMPv6_OPTION_REDIR_HDR 4 #define ICMPv6_OPTION_MTU 5 /* Nping ICMPv6Options Class internal definitions */ #define ICMPv6_OPTION_COMMON_HEADER_LEN 2 #define ICMPv6_OPTION_MIN_HEADER_LEN 8 #define ICMPv6_OPTION_SRC_LINK_ADDR_LEN (ICMPv6_OPTION_COMMON_HEADER_LEN+6) #define ICMPv6_OPTION_TGT_LINK_ADDR_LEN (ICMPv6_OPTION_COMMON_HEADER_LEN+6) #define ICMPv6_OPTION_PREFIX_INFO_LEN (ICMPv6_OPTION_COMMON_HEADER_LEN+30) #define ICMPv6_OPTION_REDIR_HDR_LEN (ICMPv6_OPTION_COMMON_HEADER_LEN+6) #define ICMPv6_OPTION_MTU_LEN (ICMPv6_OPTION_COMMON_HEADER_LEN+6) /* This must the MAX() of all values defined above*/ #define ICMPv6_OPTION_MAX_MESSAGE_BODY (ICMPv6_OPTION_PREFIX_INFO_LEN-ICMPv6_OPTION_COMMON_HEADER_LEN) #define ICMPv6_OPTION_LINK_ADDRESS_LEN 6 class ICMPv6Option : public NetworkLayerElement { private: /**********************************************************************/ /* COMMON ICMPv6 OPTION HEADER */ /**********************************************************************/ struct nping_icmpv6_option{ u8 type; u8 length; u8 data[ICMPv6_OPTION_MAX_MESSAGE_BODY]; }__attribute__((__packed__)); typedef struct nping_icmpv6_option nping_icmpv6_option_t; /**********************************************************************/ /* ICMPv6 OPTION FORMATS */ /**********************************************************************/ /* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ ... ~ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ /* Source/Target Link-layer Address +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Link-Layer Address ... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct link_addr_option{ u8 link_addr[6]; }__attribute__((__packed__)); typedef struct link_addr_option link_addr_option_t; /* Prefix Information +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Prefix Length |L|A| Reserved1 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Valid Lifetime | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Preferred Lifetime | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Reserved2 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + Prefix + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct prefix_info_option{ u8 prefix_length; u8 flags; u32 valid_lifetime; u32 preferred_lifetime; u32 reserved; u8 prefix[16]; }__attribute__((__packed__)); typedef struct prefix_info_option prefix_info_option_t; /* Redirect Header +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | ~ IP header + data ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct redirect_option{ u16 reserved_1; u32 reserved_2; //u8 invoking_pkt[?]; }__attribute__((__packed__)); typedef struct redirect_option redirect_option_t; /* MTU +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | MTU | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct mtu_option{ u16 reserved; u32 mtu; }__attribute__((__packed__)); typedef struct mtu_option mtu_option_t; nping_icmpv6_option_t h; link_addr_option_t *h_la; prefix_info_option_t *h_pi; redirect_option_t *h_r; mtu_option_t *h_mtu; public: ICMPv6Option(); ~ICMPv6Option(); void reset(); u8 *getBufferPointer(); int storeRecvData(const u8 *buf, size_t len); int protocol_id() const; int setType(u8 val); u8 getType(); bool validateType(u8 val); int setLength(u8 val); u8 getLength(); int setLinkAddress(u8* val); u8 *getLinkAddress(); int setPrefixLength(u8 val); u8 getPrefixLength(); int setFlags(u8 val); u8 getFlags(); int setValidLifetime(u32 val); u32 getValidLifetime(); int setPreferredLifetime(u32 val); u32 getPreferredLifetime(); int setPrefix(u8 *val); u8 *getPrefix(); int setMTU(u32 val); u32 getMTU(); int getHeaderLengthFromType(u8 type); }; /* End of class ICMPv6Option */ #endif