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134 lines
5.5 KiB
C++
134 lines
5.5 KiB
C++
/***************************************************************************
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* PacketParser.h -- The PacketParser Class offers methods to parse *
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* received network packets. Its main purpose is to facilitate the *
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* conversion of raw sequences of bytes into chains of objects of the *
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* PacketElement family. *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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*
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* The Nmap Security Scanner is (C) 1996-2025 Nmap Software LLC ("The Nmap
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* Project"). Nmap is also a registered trademark of the Nmap Project.
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*
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* This program is distributed under the terms of the Nmap Public Source
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* License (NPSL). The exact license text applying to a particular Nmap
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* release or source code control revision is contained in the LICENSE
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* file distributed with that version of Nmap or source code control
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* revision. More Nmap copyright/legal information is available from
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* https://nmap.org/book/man-legal.html, and further information on the
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* NPSL license itself can be found at https://nmap.org/npsl/ . This
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* header summarizes some key points from the Nmap license, but is no
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* substitute for the actual license text.
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*
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* Nmap is generally free for end users to download and use themselves,
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* including commercial use. It is available from https://nmap.org.
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*
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* The Nmap license generally prohibits companies from using and
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* redistributing Nmap in commercial products, but we sell a special Nmap
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* OEM Edition with a more permissive license and special features for
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* this purpose. See https://nmap.org/oem/
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*
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* If you have received a written Nmap license agreement or contract
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* stating terms other than these (such as an Nmap OEM license), you may
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* choose to use and redistribute Nmap under those terms instead.
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*
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* The official Nmap Windows builds include the Npcap software
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* (https://npcap.com) for packet capture and transmission. It is under
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* separate license terms which forbid redistribution without special
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* permission. So the official Nmap Windows builds may not be redistributed
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* without special permission (such as an Nmap OEM license).
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*
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* Source is provided to this software because we believe users have a
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* right to know exactly what a program is going to do before they run it.
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* This also allows you to audit the software for security holes.
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*
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* Source code also allows you to port Nmap to new platforms, fix bugs, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* and NASM).
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*
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* The free version of Nmap is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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* indemnification and commercial support are all available through the
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* Npcap OEM program--see https://nmap.org/oem/
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*
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***************************************************************************/
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/* This code was originally part of the Nping tool. */
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#ifndef __PACKETPARSER_H__
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#define __PACKETPARSER_H__ 1
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#include "ApplicationLayerElement.h"
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#include "ARPHeader.h"
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#include "DataLinkLayerElement.h"
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#include "EthernetHeader.h"
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#include "ICMPHeader.h"
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#include "ICMPv4Header.h"
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#include "ICMPv6Header.h"
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#include "ICMPv6Option.h"
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#include "ICMPv6RRBody.h"
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#include "IPv4Header.h"
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#include "IPv6Header.h"
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#include "NetworkLayerElement.h"
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#include "PacketElement.h"
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#include "RawData.h"
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#include "TCPHeader.h"
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#include "TransportLayerElement.h"
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#include "UDPHeader.h"
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#include "HopByHopHeader.h"
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#include "DestOptsHeader.h"
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#include "FragmentHeader.h"
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#include "RoutingHeader.h"
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#define LINK_LAYER 2
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#define NETWORK_LAYER 3
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#define TRANSPORT_LAYER 4
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#define APPLICATION_LAYER 5
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#define EXTHEADERS_LAYER 6
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typedef struct header_type_string{
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u32 type;
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const char *str;
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}header_type_string_t;
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typedef struct packet_type{
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u32 type;
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u32 length;
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}pkt_type_t;
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class PacketParser {
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private:
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public:
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/* Misc */
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PacketParser();
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~PacketParser();
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void reset();
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static const char *header_type2string(int val);
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static pkt_type_t *parse_packet(const u8 *pkt, size_t pktlen, bool eth_included);
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static int dummy_print_packet_type(const u8 *pkt, size_t pktlen, bool eth_included); /* TODO: remove */
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static int dummy_print_packet(const u8 *pkt, size_t pktlen, bool eth_included); /* TODO: remove */
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static int payload_offset(const u8 *pkt, size_t pktlen, bool link_included);
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static PacketElement *split(const u8 *pkt, size_t pktlen, bool eth_included);
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static PacketElement *split(const u8 *pkt, size_t pktlen);
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static int freePacketChain(PacketElement *first);
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static const char *test_packet_parser(PacketElement *test_pkt);
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static bool is_response(PacketElement *sent, PacketElement *rcvd);
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static PacketElement *find_transport_layer(PacketElement *chain);
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}; /* End of class PacketParser */
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#endif /* __PACKETPARSER_H__ */
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