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134 lines
7.2 KiB
C++
134 lines
7.2 KiB
C++
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/***************************************************************************
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* EchoServer.h -- *
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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) 1996-2022 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 *
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* redistributed without special permission (such as an Nmap OEM *
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* 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, *
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* and add new features. You are highly encouraged to submit your *
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* changes as a Github PR or by email to the dev@nmap.org mailing list *
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* for possible incorporation into the main distribution. Unless you *
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* specify otherwise, it is understood that you are offering us very *
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* broad rights to use your submissions as described in the Nmap Public *
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* Source License Contributor Agreement. This is important because we *
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* fund the project by selling licenses with various terms, and also *
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* because the inability to relicense code has caused devastating *
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* problems for other Free Software projects (such as KDE 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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#ifndef __ECHOSERVER_H__
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#define __ECHOSERVER_H__ 1
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#include "nping.h"
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#include "nsock.h"
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#include <vector>
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#include "NEPContext.h"
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#define LISTEN_QUEUE_SIZE 10
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class EchoServer {
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private:
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/* Attributes */
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std::vector<NEPContext> client_ctx;
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clientid_t client_id_count;
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/* Methods */
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int nep_listen_socket();
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int addClientContext(NEPContext ctx);
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NEPContext *getClientContext(clientid_t clnt);
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NEPContext *getClientContext(nsock_iod iod);
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int destroyClientContext(clientid_t clnt);
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nsock_iod getClientNsockIOD(clientid_t clnt);
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clientid_t getNewClientID();
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clientid_t nep_match_packet(const u8 *pkt, size_t pktlen);
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clientid_t nep_match_headers(IPv4Header *ip4, IPv6Header *ip6, TCPHeader *tcp, UDPHeader *udp, ICMPv4Header *icmp4, RawData *payload);
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int parse_hs_client(u8 *pkt, size_t pktlen, NEPContext *ctx);
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int parse_packet_spec(u8 *pkt, size_t pktlen, NEPContext *ctx);
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int generate_hs_server(EchoHeader *h, NEPContext *ctx);
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int generate_hs_final(EchoHeader *h, NEPContext *ctx);
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int generate_ready(EchoHeader *h, NEPContext *ctx);
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int generate_echo(EchoHeader *h, const u8 *pkt, size_t pktlen, NEPContext *ctx);
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public:
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EchoServer();
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~EchoServer();
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void reset();
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int start();
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int cleanup();
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int nep_capture_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_echo_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_hs_server_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_hs_client_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_hs_final_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_packetspec_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_ready_handler(nsock_pool nsp, nsock_event nse, void *param);
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int nep_session_ended_handler(nsock_pool nsp, nsock_event nse, void *param);
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}; /* End of class EchoServer */
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typedef struct handler_arg{
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EchoServer *me;
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void *param;
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} handler_arg_t;
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/* Handler wrappers */
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void capture_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void echo_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void hs_server_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void hs_client_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void hs_final_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void packetspec_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void ready_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void empty_handler(nsock_pool nsp, nsock_event nse, void *arg);
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void session_ended_handler(nsock_pool nsp, nsock_event nse, void *arg);
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#endif /* __ECHOSERVER_H__ */
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