
/***************************************************************************
 * global_structures.h -- Common structure definitions used by Nmap        *
 * components.                                                             *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *                                                                         *
 * The Nmap Security Scanner is (C) 1995-2003 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.  This guarantees your right to use,     *
 * modify, and redistribute this software under certain conditions.  If    *
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 * Many security scanner vendors already license Nmap technology such as   *
 * our remote OS fingerprinting database and code.                         *
 *                                                                         *
 * Note that the GPL places important restrictions on "derived works", yet *
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 * 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-fingerprints or nmap-service-probes.                          *
 * o Executes Nmap                                                         *
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 *                                                                         *
 * The term "Nmap" should be taken to also include any portions or derived *
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 *                                                                         *
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 *                                                                         *
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 *                                                                         *
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 * have been found so far).                                                *
 *                                                                         *
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 *                                                                         *
 * This program is distributed in the hope that it will be useful, but     *
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 * General Public License for more details at                              *
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 *                                                                         *
 ***************************************************************************/

/* $Id: global_structures.h,v 1.48 2003/09/11 02:12:57 fyodor Exp $ */


#ifndef GLOBAL_STRUCTURES_H
#define GLOBAL_STRUCTURES_H

class TargetGroup;
class Target;

/* Stores "port info" which is TCP/UDP ports or RPC program ids */
struct portinfo {
   unsigned long portno; /* TCP/UDP port or RPC program id or IP protocool */
   short trynum;
   int sd[3]; /* Socket descriptors for connect_scan */
   struct timeval sent[3]; 
   int state;
   int next; /* not struct portinfo * for historical reasons */
   int prev;
};

struct portinfolist {
   struct portinfo *openlist;
   struct portinfo *firewalled;
   struct portinfo *testinglist;
};

struct udpprobeinfo {
  u16 iptl;
  u16 ipid;
  u16 ipck;
  u16 sport;
  u16 dport;
  u16 udpck;
  u16 udplen;
  u8 patternbyte;
  struct in_addr target;
};

struct connectsockinfo {
  fd_set fds_read;
  fd_set fds_write;
  fd_set fds_except;
  struct portinfo *socklookup[2048]; /* index socket descriptor -> scan[] 
					index.  No OS better give us
					an SD > 2047!@#$ */
  int maxsd;
};

struct firewallmodeinfo {
  int active; /* is firewall mode currently active for the host? */
  int nonresponsive_ports; /* # Of ports we haven't received any response from */
  int responsive_ports; /* # of ports that told us whether they were open/closed/filtered/unfiltered */
};

/* The runtime statistics used to decide how fast to proced and how
   many ports we can try at once */
struct scanstats {
  int packet_incr;
  int initial_packet_width; /* Number of queries in parallel we should 
			       start with */
  double fallback_percent;
  int numqueries_outstanding; /* How many unexpired queries are on the 'net
				 right now? */
  double numqueries_ideal; /* How many do we WANT to be on the 'net right now? */
  int max_width; /* What is the MOST we will tolerate at once.  Can be 
		    modified via --max_parallelism */
  int min_width; /* We must always allow at least this many at once.  Can 
		    be modified via --min_parallelism*/
  int ports_left;
  int changed; /* Has anything changed since last round? */
  int alreadydecreasedqueries;
};

struct ftpinfo {
  char user[64];
  char pass[256]; /* methinks you're paranoid if you need this much space */
  char server_name[MAXHOSTNAMELEN + 1];
  struct in_addr server;
  u16 port;
  int sd; /* socket descriptor */
};

struct AVal {
  char *attribute;
  char value[128];
  struct AVal *next;
};

struct OS_Classification {
  char *OS_Vendor;
  char *OS_Family;
  char *OS_Generation; /* Can be NULL if unclassified */
  char *Device_Type;
};

#define MAX_OS_CLASSIFICATIONS_PER_FP 8
typedef struct FingerTest {
  char *OS_name;
  struct OS_Classification OS_class[MAX_OS_CLASSIFICATIONS_PER_FP];
  int num_OS_Classifications;
  int line; /* For reference prints, the line # in nmap-os-fingerprints */
  const char *name;
  struct AVal *results;
  struct FingerTest *next;
 } FingerPrint;

struct timeout_info {
  int srtt; /* Smoothed rtt estimate (microseconds) */
  int rttvar; /* Rout trip time variance */
  int timeout; /* Current timeout threshold (microseconds) */
};

struct seq_info {
  int responses;
  int seqclass; /* SEQ_* defines in nmap.h */
  int ts_seqclass; /* TS_SEQ_* defines in nmap.h */
  time_t uptime; /* time of latest system boot (or 0 if unknown ) */
  int ipid_seqclass; /* IPID_SEQ_* defines in nmap.h */
  u32 seqs[NUM_SEQ_SAMPLES];
  u32 timestamps[NUM_SEQ_SAMPLES];
  int index;
  u16 ipids[NUM_SEQ_SAMPLES];
  time_t lastboot; /* 0 means unknown */
};

/* The various kinds of port/protocol scans we can have
 * Each element is to point to an array of port/protocol numbers
 */
struct scan_lists {
	unsigned short *tcp_ports;
	int tcp_count;
	unsigned short *udp_ports;
	int udp_count;
	unsigned short *prots;
	int prot_count;
};


typedef enum { ACK_SCAN, SYN_SCAN, FIN_SCAN, XMAS_SCAN, UDP_SCAN, CONNECT_SCAN, NULL_SCAN, WINDOW_SCAN, RPC_SCAN, MAIMON_SCAN, IPPROT_SCAN } stype;

#endif /*GLOBAL_STRUCTURES_H */
