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 * global_structures.h -- Common structure definitions used by Nmap        *
 * components.                                                             *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
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 * The Nmap Security Scanner is (C) 1996-2004 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        *
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 * detection system, and port scanning code.                               *
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 *                                                                         *

/* $Id: global_structures.h 3024 2005-12-31 00:32:42Z fyodor $ */


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;

/* 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;

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;



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