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| -rw-r--r-- | libnetutil/ICMPv4Header.h | 530 |
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diff --git a/libnetutil/ICMPv4Header.h b/libnetutil/ICMPv4Header.h new file mode 100644 index 0000000..01bd6c9 --- /dev/null +++ b/libnetutil/ICMPv4Header.h @@ -0,0 +1,530 @@ +/*************************************************************************** + * ICMPv4Header.h -- The ICMPv4Header Class represents an ICMP version 4 * + * 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) 1996-2023 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 ICMPv4HEADER_H +#define ICMPv4HEADER_H 1 + +#include "ICMPHeader.h" + +/* ICMP types and codes. These defines were originally taken from Slirp 1.0 + * source file ip_icmp.h http://slirp.sourceforge.net/ (BSD licensed) and + * then, partially modified for Nping */ +#define ICMP_ECHOREPLY 0 /* Echo reply */ +#define ICMP_UNREACH 3 /* Destination unreachable: */ +#define ICMP_UNREACH_NET 0 /* --> Bad network */ +#define ICMP_UNREACH_HOST 1 /* --> Bad host */ +#define ICMP_UNREACH_PROTOCOL 2 /* --> Bad protocol */ +#define ICMP_UNREACH_PORT 3 /* --> Bad port */ +#define ICMP_UNREACH_NEEDFRAG 4 /* --> DF flag caused pkt drop */ +#define ICMP_UNREACH_SRCFAIL 5 /* --> Source route failed */ +#define ICMP_UNREACH_NET_UNKNOWN 6 /* --> Unknown network */ +#define ICMP_UNREACH_HOST_UNKNOWN 7 /* --> Unknown host */ +#define ICMP_UNREACH_ISOLATED 8 /* --> Source host isolated */ +#define ICMP_UNREACH_NET_PROHIB 9 /* --> Prohibited access */ +#define ICMP_UNREACH_HOST_PROHIB 10 /* --> Prohibited access */ +#define ICMP_UNREACH_TOSNET 11 /* --> Bad TOS for network */ +#define ICMP_UNREACH_TOSHOST 12 /* --> Bad TOS for host */ +#define ICMP_UNREACH_COMM_PROHIB 13 /* --> Prohibited communication */ +#define ICMP_UNREACH_HOSTPRECEDENCE 14 /* --> Host precedence violation */ +#define ICMP_UNREACH_PRECCUTOFF 15 /* --> Precedence cutoff */ +#define ICMP_SOURCEQUENCH 4 /* Source Quench. */ +#define ICMP_REDIRECT 5 /* Redirect: */ +#define ICMP_REDIRECT_NET 0 /* --> For the network */ +#define ICMP_REDIRECT_HOST 1 /* --> For the host */ +#define ICMP_REDIRECT_TOSNET 2 /* --> For the TOS and network */ +#define ICMP_REDIRECT_TOSHOST 3 /* --> For the TOS and host */ +#define ICMP_ECHO 8 /* Echo request */ +#define ICMP_ROUTERADVERT 9 /* Router advertisement */ +#define ICMP_ROUTERADVERT_MOBILE 16 /* Used by mobile IP agents */ +#define ICMP_ROUTERSOLICIT 10 /* Router solicitation */ +#define ICMP_TIMXCEED 11 /* Time exceeded: */ +#define ICMP_TIMXCEED_INTRANS 0 /* --> TTL==0 in transit */ +#define ICMP_TIMXCEED_REASS 1 /* --> TTL==0 in reassembly */ +#define ICMP_PARAMPROB 12 /* Parameter problem */ +#define ICMM_PARAMPROB_POINTER 0 /* --> Pointer shows the problem */ +#define ICMP_PARAMPROB_OPTABSENT 1 /* --> Option missing */ +#define ICMP_PARAMPROB_BADLEN 2 /* --> Bad datagram length */ +#define ICMP_TSTAMP 13 /* Timestamp request */ +#define ICMP_TSTAMPREPLY 14 /* Timestamp reply */ +#define ICMP_INFO 15 /* Information request */ +#define ICMP_INFOREPLY 16 /* Information reply */ +#define ICMP_MASK 17 /* Address mask request */ +#define ICMP_MASKREPLY 18 /* Address mask reply */ +#define ICMP_TRACEROUTE 30 /* Traceroute */ +#define ICMP_TRACEROUTE_SUCCESS 0 /* --> Dgram sent to next router */ +#define ICMP_TRACEROUTE_DROPPED 1 /* --> Dgram was dropped */ +#define ICMP_DOMAINNAME 37 /* Domain name request */ +#define ICMP_DOMAINNAMEREPLY 38 /* Domain name reply */ +#define ICMP_SECURITYFAILURES 40 /* Security failures */ + + +#define ICMP_STD_HEADER_LEN 8 +#define ICMP_MAX_PAYLOAD_LEN 1500 +#define MAX_ROUTER_ADVERT_ENTRIES (((ICMP_MAX_PAYLOAD_LEN-4)/8)-1) + + +class ICMPv4Header : public ICMPHeader { + + private: + + /**********************************************************************/ + /* COMMON ICMPv4 packet HEADER */ + /**********************************************************************/ + /* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | | + + Message Body + + | | */ + struct nping_icmpv4_hdr { + u8 type; /* ICMP Message Type */ + u8 code; /* ICMP Message Code */ + u16 checksum; /* Checksum */ + u8 data[ICMP_MAX_PAYLOAD_LEN]; + }__attribute__((__packed__)); + typedef struct nping_icmpv4_hdr nping_icmpv4_hdr_t; + + + /**********************************************************************/ + /* ICMPv4 MESSAGE SPECIFIC HEADERS */ + /**********************************************************************/ + + /* Destination Unreachable Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | unused | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Internet Header + 64 bits of Original Data Datagram | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_dest_unreach_msg{ + u32 unused; + //u8 original_dgram[?]; + }__attribute__((__packed__)); + typedef struct icmp4_dest_unreach_msg icmp4_dest_unreach_msg_t; + + + /* Time Exceeded Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | unused | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Internet Header + 64 bits of Original Data Datagram | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_time_exceeded_msg{ + u32 unused; + //u8 original_dgram[?]; + }__attribute__((__packed__)); + typedef struct icmp4_time_exceeded_msg icmp4_time_exceeded_msg_t; + + + /* Parameter Problem Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Pointer | unused | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Internet Header + 64 bits of Original Data Datagram | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + + struct icmp4_parameter_problem_msg{ + u8 pointer; + u8 unused[3]; + //u8 original_dgram[?]; + }__attribute__((__packed__)); + typedef struct icmp4_parameter_problem_msg icmp4_parameter_problem_msg_t; + + + /* Source Quench Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | unused | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Internet Header + 64 bits of Original Data Datagram | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_source_quench_msg{ + u32 unused; + //u8 original_dgram[?]; + }__attribute__((__packed__)); + typedef struct icmp4_source_quench_msg icmp4_source_quench_msg_t; + + + /* Redirect Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Gateway Internet Address | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Internet Header + 64 bits of Original Data Datagram | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_redirect_msg{ + struct in_addr gateway_address; + //u8 original_dgram[?]; + }__attribute__((__packed__)); + typedef struct icmp4_redirect_msg icmp4_redirect_msg_t; + + + /* Echo Request/Reply Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Data ... + +-+-+-+-+- */ + struct icmp4_echo_msg{ + u16 identifier; + u16 sequence; + //u8 data[?]; + }__attribute__((__packed__)); + typedef struct icmp4_echo_msg icmp4_echo_msg_t; + + + /* Timestamp Request/Reply Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Originate Timestamp | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Receive Timestamp | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Transmit Timestamp | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_timestamp_msg{ + u16 identifier; + u16 sequence; + u32 originate_ts; + u32 receive_ts; + u32 transmit_ts; + }__attribute__((__packed__)); + typedef struct icmp4_timestamp_msg icmp4_timestamp_msg_t; + + + /* Information Request/Reply Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_information_msg{ + u16 identifier; + u16 sequence; + }__attribute__((__packed__)); + typedef struct icmp4_information_msg icmp4_information_msg_t; + + + /* ICMP Router Advertisement Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Num Addrs |Addr Entry Size| Lifetime | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Router Address[1] | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Preference Level[1] | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Router Address[2] | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Preference Level[2] | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | . | + | . | + | . | */ + struct icmp4_router_advert_entry{ + struct in_addr router_addr; + u32 preference_level; + }__attribute__((__packed__)); + typedef struct icmp4_router_advert_entry icmp4_router_advert_entry_t; + + struct icmp4_router_advert_msg{ + u8 num_addrs; + u8 addr_entry_size; + u16 lifetime; + icmp4_router_advert_entry_t adverts[MAX_ROUTER_ADVERT_ENTRIES]; + }__attribute__((__packed__)); + typedef struct icmp4_router_advert_msg icmp4_router_advert_msg_t; + + + /* ICMP Router Solicitation Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Reserved | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_router_solicit_msg{ + u32 reserved; + }__attribute__((__packed__)); + typedef struct icmp4_router_solicit_msg icmp4_router_solicit_msg_t; + + + /* ICMP Security Failures Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Reserved | Pointer | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | | + ~ Original Internet Headers + 64 bits of Payload ~ + | | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_security_failures_msg{ + u16 reserved; + u16 pointer; + //u8 original_headers[?]; + }__attribute__((__packed__)); + typedef struct icmp4_security_failures_msg icmp4_security_failures_msg_t; + + + /* ICMP Address Mask Request/Reply Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Address Mask | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_address_mask_msg{ + u16 identifier; + u16 sequence; + struct in_addr address_mask; + }__attribute__((__packed__)); + typedef struct icmp4_address_mask_msg icmp4_address_mask_msg_t; + + + /* ICMP Traceroute Message + +---------------+---------------+---------------+---------------+ + | Type | Code | Checksum | + +---------------+---------------+---------------+---------------+ + | ID Number | unused | + +---------------+---------------+---------------+---------------+ + | Outbound Hop Count | Return Hop Count | + +---------------+---------------+---------------+---------------+ + | Output Link Speed | + +---------------+---------------+---------------+---------------+ + | Output Link MTU | + +---------------+---------------+---------------+---------------+ */ + struct icmp4_traceroute_msg{ + u16 id_number; + u16 unused; + u16 outbound_hop_count; + u16 return_hop_count; + u32 output_link_speed; + u32 output_link_mtu; + }__attribute__((__packed__)); + typedef struct icmp4_traceroute_msg icmp4_traceroute_msg_t; + + + /* ICMP Domain Name Request Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ + struct icmp4_domain_name_request_msg{ + u16 identifier; + u16 sequence; + }__attribute__((__packed__)); + typedef struct icmp4_domain_name_request_msg icmp4_domain_name_request_msg_t; + + + /* ICMP Domain Name Reply Message + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Type | Code | Checksum | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Identifier | Sequence Number | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Time-To-Live | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + | Names ... + +-+-+-+-+-+-+-+- */ + struct icmp4_domain_name_reply_msg{ + u16 identifier; + u16 sequence; + s16 ttl; /* Signed! */ + u8 names[ICMP_MAX_PAYLOAD_LEN-8]; + }__attribute__((__packed__)); + typedef struct icmp4_domain_name_reply_msg icmp4_domain_name_reply_msg_t; + + + /* Main data structure */ + nping_icmpv4_hdr_t h; + + /* Helper pointers */ + icmp4_dest_unreach_msg_t *h_du; + icmp4_time_exceeded_msg_t *h_te; + icmp4_parameter_problem_msg_t *h_pp; + icmp4_source_quench_msg_t *h_sq; + icmp4_redirect_msg_t *h_r; + icmp4_echo_msg_t *h_e; + icmp4_timestamp_msg_t *h_t; + icmp4_information_msg_t *h_i; + icmp4_router_advert_msg_t *h_ra; + icmp4_router_solicit_msg_t *h_rs; + icmp4_security_failures_msg_t *h_sf; + icmp4_address_mask_msg_t *h_am; + icmp4_traceroute_msg_t *h_trc; + icmp4_domain_name_request_msg_t *h_dn; + icmp4_domain_name_reply_msg_t *h_dnr; + + /* Internal counts */ + int routeradventries; + int domainnameentries; + + public: + /* PacketElement:: Mandatory methods */ + ICMPv4Header(); + ~ICMPv4Header(); + 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); + + /* ICMP Code */ + int setCode(u8 c); + u8 getCode() const; + bool validateCode(); + bool validateCode(u8 type, u8 code); + + /* Checksum */ + int setSum(); + int setSum(u16 s); + u16 getSum() const; + + /* Unused and reserved fields */ + int setUnused(u32 val); + u32 getUnused() const; + int setReserved( u32 val ); + u32 getReserved() const; + + /* Redirect */ + int setGatewayAddress(struct in_addr ipaddr); + struct in_addr getGatewayAddress() const; + + /* Parameter problem */ + int setParameterPointer(u8 val); + u8 getParameterPointer() const; + + /* Router advertisement */ + int setNumAddresses(u8 val); + u8 getNumAddresses() const; + int setAddrEntrySize(u8 val); + u8 getAddrEntrySize() const; + int setLifetime(u16 val); + u16 getLifetime() const; + int addRouterAdvEntry(struct in_addr raddr, u32 pref); + u8 *getRouterAdvEntries(int *num) const; + int clearRouterAdvEntries(); + + /* Echo/Timestamp/Mask */ + int setIdentifier(u16 val); + u16 getIdentifier() const; + int setSequence(u16 val); + u16 getSequence() const; + + /* Timestamp only */ + int setOriginateTimestamp(u32 t); + u32 getOriginateTimestamp() const; + int setReceiveTimestamp(u32 t); + u32 getReceiveTimestamp() const; + int setTransmitTimestamp(u32 t); + u32 getTransmitTimestamp() const; + + /* Mask only */ + int setAddressMask(struct in_addr mask); + struct in_addr getAddressMask() const; + + /* Security Failures */ + int setSecurityPointer(u16 val); + u16 getSecurityPointer() const; + + /* Traceroute */ + int setIDNumber(u16 val); + u16 getIDNumber() const; + int setOutboundHopCount(u16 val); + u16 getOutboundHopCount() const; + int setReturnHopCount(u16 val); + u16 getReturnHopCount() const; + int setOutputLinkSpeed(u32 val); + u32 getOutputLinkSpeed() const; + int setOutputLinkMTU(u32 val); + u32 getOutputLinkMTU() const; + + /* Misc */ + int getICMPHeaderLengthFromType( u8 type ) const; + const char *type2string(int type, int code) const; + bool isError() const; + + +}; /* End of class ICMPv4Header */ + +#endif |