File: targets.h

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/***************************************************************************
 * targets.h -- Functions relating to "ping scanning" as well as           *
 * determining the exact IPs to hit based on CIDR and other input formats. * 
 *                                                                         *
 ***********************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: targets.h 28192 2012-03-01 06:53:35Z fyodor $ */

#ifndef TARGETS_H
#define TARGETS_H

#ifdef HAVE_CONFIG_H
#include "nmap_config.h"
#else
#ifdef WIN32
#include "nmap_winconfig.h"
#endif /* WIN32 */
#endif /* HAVE_CONFIG_H */

/* This contains pretty much everything we need ... */
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_SYS_PARAM_H   
#include <sys/param.h> /* Defines MAXHOSTNAMELEN on BSD*/
#endif

#include "nmap.h"
#include "global_structures.h"

class HostGroupState;

/**************************STRUCTURES******************************/
struct pingtune {
  int up_this_block;
  int down_this_block;
  int block_tries;
  int block_unaccounted;
  int max_tries;
  int num_responses;
  int dropthistry;
  double group_size;
  int min_group_size; /* The group size must never go below this value */
  int group_start;
  int group_end;
  u16 seq_offset; // For distinguishing between received packets from this 
                  // execution vs. concurrent nmaps
};

struct tcpqueryinfo {
  int *sockets[MAX_PROBE_PORTS];
  int maxsd;
  fd_set fds_r;
  fd_set fds_w;
  fd_set fds_x;
  int sockets_out;
};

struct pingtech {
  unsigned int rawicmpscan: 1,
    connecttcpscan: 1,
    rawtcpscan: 1,
    rawudpscan: 1,
    rawsctpscan: 1,
    rawprotoscan: 1;
};

/* Ports is the list of ports the user asked to be scanned (0 terminated),
   you can just pass NULL (it is only a stupid optimization that needs it) */
Target *nexthost(HostGroupState *hs,const addrset *exclude_group, 
                 struct scan_lists *ports, int pingtype);
int load_exclude_file(addrset *exclude_group, FILE *fp);
int load_exclude_string(addrset *exclude_group, const char *s);
/* a debugging routine to dump an exclude list to stdout. */
int dumpExclude(addrset *exclude_group);
/* Returns the last host obtained by nexthost.  It will be given again the next
   time you call nexthost(). */
void returnhost(HostGroupState *hs);

#endif /* TARGETS_H */