/*************************************************************************** * 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) 1996-2022 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. 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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