Logo Search packages:      
Sourcecode: nmap version File versions  Download package


 * scan_engine.h -- Includes much of the "engine" functions for scanning,  *
 * such as pos_scan and ultra_scan.  It also includes dependant functions  *
 * such as those for collecting SYN/connect scan responses.                *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *                                                                         *
 * The Nmap Security Scanner is (C) 1996-2009 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, and version detection.                                       *
 *                                                                         *
 * 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 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.  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 as well as helping to     *
 * fund the continued development of Nmap technology.  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 COPYING.OpenSSL 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, it is assumed 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              *
 * 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: scan_engine.h 13506 2009-06-03 23:15:45Z daniel $ */


#include "nmap.h"
#include "global_structures.h"
#include <vector>

struct probespec_tcpdata {
  u16 dport;
  u8 flags;

struct probespec_udpdata {
  u16 dport;

struct probespec_sctpdata {
  u16 dport;
  u8 chunktype;

struct probespec_icmpdata {
  u8 type;
  u8 code;

#define PS_NONE 0
#define PS_TCP 1
#define PS_UDP 2
#define PS_PROTO 3
#define PS_ICMP 4
#define PS_ARP 5
#define PS_SCTP 7

/* The size of this structure is critical, since there can be tens of
   thousands of them stored together ... */
typedef struct probespec {
  /* To save space, I changed this from private enum (took 4 bytes) to
     u8 that uses #defines above */
  u8 type;
  u8 proto; /* If not PS_ARP -- Protocol number ... eg IPPROTO_TCP, etc. */
  union {
    struct probespec_tcpdata tcp; /* If type is PS_TCP or PS_CONNECTTCP. */
    struct probespec_udpdata udp; /* PS_UDP */
    struct probespec_sctpdata sctp; /* PS_SCTP */
    struct probespec_icmpdata icmp; /* PS_ICMP */
    /* Nothing needed for PS_ARP, since src mac and target IP are
       avail from target structure anyway */
  } pd;
} probespec;

/* 3rd generation Nmap scanning function.  Handles most Nmap port scan types */
void ultra_scan(std::vector<Target *> &Targets, struct scan_lists *ports, 
            stype scantype, struct timeout_info *to = NULL);

/* Handles the "positive-response" scans (where we get a response
   telling us that the port is open based on the probe.  This includes
   SYN Scan, Connect Scan, RPC scan, Window Scan, and ACK scan */
void pos_scan(Target *target, u16 *portarray, int numports, stype scantype);

/* FTP bounce attack scan.  This function is rather lame and should be
   rewritten.  But I don't think it is used much anyway.  If I'm going to
   allow FTP bounce scan, I should really allow SOCKS proxy scan.  */
void bounce_scan(Target *target, u16 *portarray, int numports,
             struct ftpinfo *ftp);

/* Determines an ideal number of hosts to be scanned (port scan, os
   scan, version detection, etc.) in parallel after the ping scan is
   completed.  This is a balance between efficiency (more hosts in
   parallel often reduces scan time per host) and results latency (you
   need to wait for all hosts to finish before Nmap can spit out the
   results).  Memory consumption usually also increases with the
   number of hosts scanned in parallel, though rarely to significant
   levels. */
int determineScanGroupSize(int hosts_scanned_so_far, 
                     struct scan_lists *ports);

#endif /* SCAN_ENGINE_H */

Generated by  Doxygen 1.6.0   Back to index