TargetGroup.h

/***************************************************************************
 * TargetGroup.h -- The "TargetGroup" class holds a group of IP addresses, *
 * such as those from a '/16' or '10.*.*.*' specification. It is a         *
 * stripped version of the equivalent class of Nmap.                       *
 *                                                                         *
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 ***************************************************************************/

/* $Id: TargetGroup.h 12955 2009-04-15 00:37:03Z fyodor $ */

#ifndef TARGETGROUP_H
#define TARGETGROUP_H

#include "ncrack.h"
#include "Target.h"
#include "global_structures.h"

#include <vector>

class TargetGroup {
 public:
  /* used by get_target_types */
  enum _targets_types { TYPE_NONE, IPV4_NETMASK, IPV4_RANGES, IPV6_ADDRESS };
  /* used as input to skip range */
  enum _octet_nums { FIRST_OCTET, SECOND_OCTET, THIRD_OCTET };
  TargetGroup();

 /* Initializes (or reinitializes) the object with a new expression,
    such as 192.168.0.0/16 , 10.1.0-5.1-254 , or
    fe80::202:e3ff:fe14:1102 .  The af parameter is AF_INET or
    AF_INET6 Returns 0 for success */
  int parse_expr(const char * const target_expr, int af);
  /* Reset the object without reinitializing it */
  int rewind();
  /* Grab the next host from this expression (if any).  Returns 0 and
     fills in ss if successful.  ss must point to a pre-allocated
     sockaddr_storage structure */
  int get_next_host(struct sockaddr_storage *ss, size_t *sslen);
  /* Returns the last given host, so that it will be given again next
     time get_next_host is called.  Obviously, you should only call
     this if you have fetched at least 1 host since parse_expr() was
     called */
  int return_last_host();
  /* return the target type */
  char get_targets_type() {return targets_type;};
  /* get the netmask */
  int get_mask() {return netmask;};
  /* is the current expression a named host */
  int get_namedhost() {return namedhost;};
  /* Skip an octet in the range array */
  int skip_range(_octet_nums octet);

  vector <service_lookup *>services;

 private:
  enum _targets_types targets_type;
  void Initialize();

#if HAVE_IPV6
  struct sockaddr_in6 ip6;
#endif

  /* These 4 are used for the '/mask' style of specifying target 
     net (IPV4_NETMASK) */
  u32 netmask;
  struct in_addr startaddr;
  struct in_addr currentaddr;
  struct in_addr endaddr;

  // These three are for the '138.[1-7,16,91-95,200-].12.1' style (IPV4_RANGES)
  u8 addresses[4][256];
  unsigned int current[4];
  u8 last[4];  

/* Number of IPs left in this structure -- set to 0 if 
      the fields are not valid */
  unsigned long long ipsleft; 

  // is the current target expression a named host
  int namedhost;
};


#endif /* TARGETGROUP_H */