#ifndef _INTERFACE_H_477d2d7c_
#define _INTERFACE_H_477d2d7c_

/* This software is Copyright 1989, 1990, 1992, 1993 by various individuals.
   Please see the accompanying file COPYRIGHT for details. */
#include "db.h"

/* these symbols must be defined by the interface */
extern int notify(dbref, const char *);
extern int awakep(dbref);
extern int shutdown_flag; /* if non-zero, interface should shut down */
extern void emergency_shutdown(void);
extern int boot_off(dbref);
extern void dump_descriptors(dbref, const char *);

/* the following symbols are provided by game.c */

/* max length of command argument to process_command */
#define MAX_COMMAND_LEN 512
#define BUFFER_LEN ((MAX_COMMAND_LEN)*8)
extern int do_builtin_command(dbref, const char *, char *);
extern void process_command(dbref, char *);

extern dbref create_player(const char *, const char *);
extern dbref connect_player(const char *, const char *);
extern void do_look_around(dbref);

extern int init_game(const char *, const char *, int);
extern void free_game(void);
extern void register_free(void **);
extern void dump_database(void);

struct text_block {
  int nchars;
  struct text_block *nxt;
  char *start;
  char *buf;
  } ;

struct text_queue {
  struct text_block *head;
  struct text_block **tail;
  } ;

struct descriptor_data {
  int descriptor;
  unsigned int connected : 1;
  unsigned int booted : 1;
  unsigned int wordfold : 1;
  unsigned int waiting : 1;
  unsigned int hostnamewait : 1;
  unsigned int usernamewait : 1;
  unsigned int holdshutdown : 1;
  unsigned int telnetstate : 3;
#define TNS_DONT 0 /* don't do telnet stuff */
#define TNS_DATA 1 /* telnet in data mode */
#define TNS_IAC  2 /* just after IAC */
#define TNS_DO   3 /* after IAC DO */
#define TNS_WILL 4 /* after IAC WILL */
#define TNS_SKIP 5 /* after IAC DONT or IAC WONT - skip next byte */
#define TNS_SB   6 /* after IAC SB, in subnegotiation */
#define TNS_SBI  7 /* after IAC SB, just after IAC in subnegotiation */
  unsigned int windows_kludge : 1;
  dbref player;
  char *output_prefix;
  char *output_suffix;
  int output_fold;
  int output_col;
  int output_size;
  struct text_queue output;
  struct text_queue input;
  unsigned char *raw_input;
  unsigned char *raw_input_at;
  long last_time;
  long connected_at;
  const char *hostname;
  const char *username;
  int quota;
  struct descriptor_data *next;
  struct descriptor_data **prev;
  } ;

extern struct descriptor_data *descriptor_list;
extern void panic(const char *);
extern void dump_rusers(struct descriptor_data *);

#endif