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220 lines
10 KiB
C
220 lines
10 KiB
C
/***************************************************************************
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* ncat_core.h *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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* *
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* The Nmap Security Scanner is (C) 1996-2012 Insecure.Com LLC. Nmap is *
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* also a registered trademark of Insecure.Com LLC. This program is free *
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* software; you may redistribute and/or modify it under the terms of the *
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* GNU General Public License as published by the Free Software *
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* Foundation; Version 2 with the clarifications and exceptions described *
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* below. This guarantees your right to use, modify, and redistribute *
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* this software under certain conditions. If you wish to embed Nmap *
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* technology into proprietary software, we sell alternative licenses *
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* (contact sales@insecure.com). Dozens of software vendors already *
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* license Nmap technology such as host discovery, port scanning, OS *
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* detection, version detection, and the Nmap Scripting Engine. *
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* *
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* Note that the GPL places important restrictions on "derived works", yet *
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* it does not provide a detailed definition of that term. To avoid *
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* misunderstandings, we interpret that term as broadly as copyright law *
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* allows. For example, we consider an application to constitute a *
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* "derivative work" for the purpose of this license if it does any of the *
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* following: *
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* o Integrates source code from Nmap *
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* o Reads or includes Nmap copyrighted data files, such as *
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* nmap-os-db or nmap-service-probes. *
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* o Executes Nmap and parses the results (as opposed to typical shell or *
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* execution-menu apps, which simply display raw Nmap output and so are *
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* not derivative works.) *
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* o Integrates/includes/aggregates Nmap into a proprietary executable *
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* installer, such as those produced by InstallShield. *
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* o Links to a library or executes a program that does any of the above *
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* *
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* The term "Nmap" should be taken to also include any portions or derived *
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* works of Nmap, as well as other software we distribute under this *
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* license such as Zenmap, Ncat, and Nping. This list is not exclusive, *
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* but is meant to clarify our interpretation of derived works with some *
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* common examples. Our interpretation applies only to Nmap--we don't *
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* speak for other people's GPL works. *
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* *
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* If you have any questions about the GPL licensing restrictions on using *
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* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
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* we also offer alternative license to integrate Nmap into proprietary *
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* applications and appliances. These contracts have been sold to dozens *
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* of software vendors, and generally include a perpetual license as well *
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* as providing for priority support and updates. They also fund the *
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* continued development of Nmap. Please email sales@insecure.com for *
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* further information. *
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* *
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* As a special exception to the GPL terms, Insecure.Com LLC grants *
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* permission to link the code of this program with any version of the *
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* OpenSSL library which is distributed under a license identical to that *
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* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
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* linked combinations including the two. You must obey the GNU GPL in all *
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* respects for all of the code used other than OpenSSL. If you modify *
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* this file, you may extend this exception to your version of the file, *
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* but you are not obligated to do so. *
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* *
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* If you received these files with a written license agreement or *
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* contract stating terms other than the terms above, then that *
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* alternative license agreement takes precedence over these comments. *
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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 (none *
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* have been found so far). *
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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 send your changes *
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* to nmap-dev@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, or checking them into the Nmap *
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* source code repository, it is understood (unless you specify otherwise) *
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* that you are offering the Nmap Project (Insecure.Com LLC) the *
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* unlimited, non-exclusive right to reuse, modify, and relicense the *
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* code. Nmap will always be available Open Source, but this is important *
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* because the inability to relicense code has caused devastating problems *
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* for other Free Software projects (such as KDE and NASM). We also *
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* occasionally relicense the code to third parties as discussed above. *
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* If you wish to specify special license conditions of your *
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* contributions, just say so when you send them. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License v2.0 for more details at *
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* http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file *
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* included with Nmap. *
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* *
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***************************************************************************/
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/* $Id$ */
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#include "nsock.h"
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#include "nbase.h"
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#include "util.h"
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#include "sockaddr_u.h"
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/* Maximum size of the srcaddrs array. In this case two because we can only have
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a IPV4 INADDR_ANY and a IPV6 in6addr_any at most or a user defined address */
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#define NUM_LISTEN_ADDRS 2
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extern union sockaddr_u listenaddrs[NUM_LISTEN_ADDRS];
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extern int num_listenaddrs;
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extern union sockaddr_u srcaddr;
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extern size_t srcaddrlen;
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extern union sockaddr_u targetss;
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extern size_t targetsslen;
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extern union sockaddr_u httpconnect;
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extern union sockaddr_u socksconnect;
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struct options {
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unsigned short portno;
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int verbose;
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int debug;
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char *target;
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int af;
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int broker;
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int listen;
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int keepopen;
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int sendonly;
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int recvonly;
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int telnet;
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int udp;
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int sctp;
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int linedelay;
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int chat;
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int nodns;
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const char *normlog;
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const char *hexlog;
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int normlogfd;
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int hexlogfd;
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int append;
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int idletimeout;
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int crlf;
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/* Were any hosts specifically allowed? If so, deny all others. */
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int allow;
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int deny;
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struct addrset allowset;
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struct addrset denyset;
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int httpserver;
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/* Loose source-routing stuff */
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struct in_addr srcrtes[8];
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int numsrcrtes;
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int srcrteptr;
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/* Maximum number of simultaneous connections */
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int conn_limit;
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int conntimeout;
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char *cmdexec;
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int shellexec;
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char *proxy_auth;
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char *proxytype;
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int ssl;
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char *sslcert;
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char *sslkey;
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int sslverify;
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char *ssltrustfile;
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};
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extern struct options o;
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/* The time the program was started, for exit statistics in connect mode. */
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extern struct timeval start_time;
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/* Initializes global options to their default values. */
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void options_init(void);
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/* Tries to resolve the given name (or literal IP) into a sockaddr structure.
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Pass 0 for the port if you don't care. Returns 0 if hostname cannot be
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resolved. */
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int resolve(char *hostname, unsigned short port,
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struct sockaddr_storage *ss, size_t *sslen, int af);
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int fdinfo_close(struct fdinfo *fdn);
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int fdinfo_recv(struct fdinfo *fdn, char *buf, size_t size);
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int fdinfo_send(struct fdinfo *fdn, const char *buf, size_t size);
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int fdinfo_pending(struct fdinfo *fdn);
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int ncat_recv(struct fdinfo *fdn, char *buf, size_t size, int *pending);
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int ncat_send(struct fdinfo *fdn, const char *buf, size_t size);
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/* Broadcast a message to all the descriptors in fds. Returns -1 if any of the
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sends failed. */
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extern int ncat_broadcast(fd_set *fds, const fd_list_t *fdlist, const char *msg, size_t size);
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/* Do telnet WILL/WONT DO/DONT negotiations */
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extern void dotelnet(int s, unsigned char *buf, size_t bufsiz);
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/* sleep(), usleep(), msleep(), Sleep() -- all together now, "portability".
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*
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* There is no upper or lower limit to the delayval, so if you pass in a short
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* length of time <100ms, then you're likely going to get odd results.
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* This is because the Linux timeslice is 10ms-200ms. So don't expect
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* it to return for at least that long.
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*
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* Block until the specified time has elapsed, then return 1.
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*/
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extern int ncat_delay_timer(int delayval);
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/* Open a logfile for writing.
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* Return the open file descriptor. */
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extern int ncat_openlog(const char *logfile, int append);
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extern void ncat_log_send(const char *data, size_t len);
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extern void ncat_log_recv(const char *data, size_t len);
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extern int ncat_hostaccess(char *matchaddr, char *filename, char *remoteip);
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/* Make it so that line endings read from a console are always \n (not \r\n).
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Defined in ncat_posix.c and ncat_win.c. */
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extern void set_lf_mode(void);
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