/*************************************************************************** * ncat.h * ***********************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. Our interpretation applies only to Nmap--we don't * * speak for other people's GPL works. * * * * If you have any questions about the GPL licensing restrictions on using * * Nmap in non-GPL works, we would be happy to help. As mentioned above, * * we also offer alternative license to integrate Nmap into proprietary * * applications and appliances. These contracts have been sold to dozens * * of software vendors, and generally include a perpetual license as well * * as providing for priority support and updates. They also fund the * * continued development of Nmap. Please email sales@insecure.com for * * further information. * * * * As a special exception to the GPL terms, Insecure.Com LLC grants * * permission to link the code of this program with any version of the * * OpenSSL library which is distributed under a license identical to that * * listed in the included docs/licenses/OpenSSL.txt file, and distribute * * linked combinations including the two. You must obey the GNU GPL in all * * respects for all of the code used other than OpenSSL. If you modify * * this file, you may extend this exception to your version of the file, * * but you are not obligated to do so. * * * * If you received these files with a written license agreement or * * contract stating terms other than the terms above, then that * * alternative license agreement takes precedence over these comments. * * * * 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 (none * * have been found so far). * * * * Source code also allows you to port Nmap to new platforms, fix bugs, * * and add new features. You are highly encouraged to send your changes * * to nmap-dev@insecure.org for possible incorporation into the main * * distribution. 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. * * * ***************************************************************************/ /* $Id$ */ #ifndef NCAT_H_ #define NCAT_H_ #include "ncat_config.h" #include #ifdef HAVE_OPENSSL #include #endif #include "nsock.h" #include "util.h" #include "sys_wrap.h" #include "ncat_connect.h" #include "ncat_core.h" #include "ncat_exec.h" #include "ncat_listen.h" #include "ncat_proxy.h" #include "ncat_ssl.h" /* Ncat information for output, etc. */ #define NCAT_NAME "Ncat" #define NCAT_URL "http://nmap.org/ncat" #define NCAT_VERSION "6.01" #ifndef __GNUC__ #ifndef __attribute__ #define __attribute__(x) #endif #endif /* structs */ #ifdef WIN32 #pragma pack(1) #endif struct socks4_data { char version; char type; unsigned short port; unsigned long address; char username[256]; } __attribute__((packed)); #ifdef WIN32 #pragma pack() #endif /* defines */ /* Client-mode timeout for reads, infinite */ #define DEFAULT_READ_TIMEOUT -1 /* Client-mode timeout for writes, in msecs */ #define DEFAULT_WRITE_TIMEOUT 2000 /* Client-mode timeout for connection establishment, in msecs */ #define DEFAULT_CONNECT_TIMEOUT 10000 /* The default length of Ncat buffers */ #define DEFAULT_BUF_LEN (1024) #define DEFAULT_TCP_BUF_LEN (1024 * 8) #define DEFAULT_UDP_BUF_LEN (1024 * 128) /* Default Ncat port */ #define DEFAULT_NCAT_PORT 31337 /* Default port for SOCKS4 */ #define DEFAULT_SOCKS4_PORT 1080 /* The default port Ncat will connect to when trying to connect to an HTTP * proxy server. The current setting is the default for squid and probably * other HTTP proxies. But it may also be 8080, 8888, etc. */ #define DEFAULT_PROXY_PORT 3128 /* Listen() backlog */ #define BACKLOG 10 /* The default maximum number of simultaneous connections Ncat will accept to * a listening port. You may want to increase or decrease this value depending * on your specific needs. */ #define DEFAULT_MAX_CONNS 100 /* SOCKS4 protocol responses */ #define SOCKS4_VERSION 4 #define SOCKS_CONNECT 1 #define SOCKS_BIND 2 #define SOCKS_CONN_ACC 90 /* woot */ #define SOCKS_CONN_REF 91 #define SOCKS_CONN_IDENT 92 #define SOCKS_CONN_IDENTDIFF 93 /* Length of IPv6 address */ #ifndef INET6_ADDRSTRLEN #define INET6_ADDRSTRLEN 46 #endif #ifndef IPPROTO_SCTP #define IPPROTO_SCTP 132 #endif /* Dummy WNOHANG for Windows */ #ifndef WNOHANG #define WNOHANG 0 #endif #endif