/*
 * $Id: party.h,v 1.6 2002/08/23 13:39:23 howardjp Exp $
 *
 * Copyright (c) 1990
 *      Jan Wolter.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Jan Wolter
 *      and his contributors.
 * 4. Neither the name of Jan Wolter nor the names of his contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY JAN WOLTER AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL JAN WOLTER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/* PARTY PROGRAM - GLOBAL DECLARATIONS */

/* This file contains installation dependent information about the party
 * program.  The user should define either SYSIII, SYSV or BSD to get this
 * to compile.  If none of these seem appropriate, there are lower level
 * defines that can be set to mix and match features from this Unixes.
 *
 * BSD works for SunOS and Mach.  SYSV has not been tested in eons.
 *
 * Defines should be set with -D options in the Makefile, not by editting
 * this file.  This just sets defaults if you don't define anything.  The
 * defaults are mostly set up for M-Net.
 */

#include <sys/types.h>
#include <paths.h>		/* Comment this out if you ain't got it */
#include <utmp.h>

/* The name of the partytab file must be compiled into the program.  This
 * is the file that determines the rest of the system configuration.
 */

#ifndef PARTYTAB
#define PARTYTAB "/usr/local/lib/party/partytab"
#endif /*PARTYTAB*/

/* either SUID or SGID should be set, depending on whether the party
 * program is to be installed suid or sgid.
 */

#ifndef SUID
#ifndef SGID
#define SUID
#endif /*SGID*/
#endif /*SUID*/

/* MAILDELAY determines how often the program checks for new mail and for
 * idleness.  The test will be made roughly every 4*MAILDELAY seconds.
 */

#ifndef MAILDELAY
#define MAILDELAY 30
#endif /*MAILDELAY*/

/* UTMP is the location of the utmp file, which varies on some systems */

#ifndef UTMP
#ifdef _PATH_UTMP
#define UTMP _PATH_UTMP
#else
#define UTMP "/etc/utmp"
#endif
#endif

/* The following options give default values for options.  All of these can
 * be overridden by the partytab file, and most can be overridden by the
 * user in various ways.
 */

#ifndef DFLT_CHANTAB
#define DFLT_CHANTAB "/usr/local/lib/party/chantab"
#endif /*DFLT_CHANTAB*/

#ifndef DFLT_DIR
#define DFLT_DIR "/usr/local/lib/party/log"
#endif /*DFLT_DIR*/

#ifndef DFLT_HELP
#define DFLT_HELP "/usr/local/lib/party/partyhlp"
#endif /*DFLT_HELP*/

#ifndef DFLT_MAKENOISE
#define DFLT_MAKENOISE "/usr/local/lib/party/noisetab"
#endif /*DFLT_MAKENOISE*/

#ifndef DFLT_WHOFILE
#define DFLT_WHOFILE "/usr/local/lib/party/partytmp"
#endif /*DFLT_WHOFILE*/

#ifndef DFLT_FULLMESG
#define DFLT_FULLMESG "Sorry, Party is full.  Please try again later."
#endif /*DFLT_FULLMESG*/

#ifndef DFLT_INTRO
#define DFLT_INTRO "Welcome to PARTY!  Type '?' for help:"
#endif /*DFLT_INTRO*/

#ifndef DFLT_PROMPT
#define DFLT_PROMPT ">"
#endif /*DFLT_PROMPT*/

#ifndef DFLT_TPMORP
#define DFLT_TPMORP ""
#endif /*DFLT_TPMORP*/

#ifndef DFLT_SPACEONLY
#define DFLT_SPACEONLY "Type '?' for help."
#endif /*DFLT_SPACEONLY*/

#ifndef DFLT_SHELL
#define DFLT_SHELL "/bin/sh"
#endif /*DFLT_SHELL*/

#ifndef DFLT_BACK
#define DFLT_BACK "10"
#endif /*DFLT_BACK*/

#ifndef DFLT_COLS
#define DFLT_COLS "80"
#endif /*DFLT_COLS*/

#ifndef DFLT_FILTER
#define DFLT_FILTER ""
#endif /*DFLT_FILTER*/

#ifndef DFLT_START
#define DFLT_START "party"
#endif /*DFLT_START*/

#ifndef DFLT_READLIM
#define DFLT_READLIM "0"
#endif /*DFLT_READLIM*/

#ifndef DFLT_MAILDIR
#define DFLT_MAILDIR "/usr/mail"
#endif /*DFLT_MAILDIR*/

#ifndef DFLT_KNOCKWAIT
#define DFLT_KNOCKWAIT "30"
#endif /*DFLT_KNOCKWAIT*/

#ifndef DFLT_IDLEOUT
#define DFLT_IDLEOUT "10"
#endif /*DFLT_IDLEOUT*/

#ifndef DFLT_CAPACITY
#define DFLT_CAPACITY "50"
#endif /*DFLT_CAPACITY*/

#ifndef DFLT_DEBUG
#define DFLT_DEBUG "party.debug"
#endif /*DFLT_DEBUG*/

/* Recognize some builtin compiler defines */

#ifdef NeXT
#ifndef BSD
#define BSD
#endif
#endif

#if defined(sparc) || defined(bsdi)
#ifndef BSD
#define BSD
#endif
#ifndef POSIX
#define POSIX
#endif
#endif

/* Translate high level defines into lower level defines */

#ifdef SYSIII
#define NOSTRSTR	/* Don't use strstr() call */
#define L_LOCKING       /* Use locking() to lock files */
#define F_TERMIO        /* Use ioctl() to set modes */
typedef int vint;	/* No void type on this old machine */
typedef unsigned mtype;	/* arg type for malloc() */
#define BFSZ 268	/* in Sys3 can't type more than 256 anyway */
#define CANT_RESET	/* can't give up effective uid and take it back */
#define RAND() rand()
#define MAXRAND 32767
#define SEEDRAND(x) srand(x)
#define NOSELECT
#endif /*SYSIII*/

#ifdef SYSV
#define L_LOCKF         /* Use lockf() to lock files */
#define F_TERMIO        /* Use ioctl() to set modes */
#define NODUP2          /* Don't use dup2() call */
#define BFSZ 1035
#define index strchr
typedef void vint;
typedef unsigned long mtype;	/* arg type for malloc() */
#define RAND() rand()
#define MAXRAND 32767
#define SEEDRAND(x) srand(x)
#define VAR_ARGS
#endif /*SYSV*/

#ifdef BSD
#define L_FLOCK         /* Use flock() to lock files */
#if defined(bsdi) || defined(linux) || defined(__FreeBSD__)
#define F_TERMIOS       /* Use tcsetattr() to set modes */
#else
#define F_STTY          /* Use stty() to set modes */
#endif /*bsdi*/
#define WINDOWS         /* Get window size from kernel */
#define BFSZ 1035
typedef void vint;
typedef unsigned long mtype;	/* arg type for malloc() */
#define RAND() random()
#define MAXRAND 2147483647
#define SEEDRAND(x) srandom(x)
#define VAR_ARGS
#endif /*BSD*/

#ifdef POSIX
#include <unistd.h>
#endif

#ifdef F_TERMIOS
#include <termios.h>
struct termios cooked, cbreak;
#define GTTY(fd, st)    tcgetattr(fd, (st))
#ifdef TCSASOFT
#define STTY(fd, st)    tcsetattr(fd, TCSASOFT | TCSANOW, (st))
#else
#define STTY(fd, st)    tcsetattr(fd, TCSANOW, (st))
#endif
#define EOF_CHAR    (cooked.c_cc[VEOF])
#define ERASE_CHAR  (cooked.c_cc[VERASE])
#define KILL_CHAR   (cooked.c_cc[VKILL])
#ifdef VREPRINT
#define REPRINT_CHAR (cooked.c_cc[VREPRINT])
#else
#define REPRINT_CHAR '\022'
#endif
#ifdef VWERASE
#define WERASE_CHAR (cooked.c_cc[VWERASE])
#else
#define WERASE_CHAR '\027'
#endif
#ifdef VLNEXT
#define LNEXT_CHAR (cooked.c_cc[VLNEXT])
#else
#define LNEXT_CHAR '\026'
#endif
#endif /*F_TERMIOS*/

#ifdef F_TERMIO
#include <termio.h>
struct termio cooked, cbreak;
#define GTTY(fd, st)    ioctl(fd, TCGETA, (st))
#define STTY(fd, st)    ioctl(fd, TCSETAF, (st))
#define EOF_CHAR    (cooked.c_cc[VEOF])
#define ERASE_CHAR  (cooked.c_cc[VERASE])
#define KILL_CHAR   (cooked.c_cc[VKILL])
#ifdef VREPRINT
#define REPRINT_CHAR (cooked.c_cc[VREPRINT])
#else
#define REPRINT_CHAR '\022'
#endif
#ifdef VWERASE
#define WERASE_CHAR (cooked.c_cc[VWERASE])
#else
#define WERASE_CHAR '\027'
#endif
#ifdef VLNEXT
#define LNEXT_CHAR (cooked.c_cc[VLNEXT])
#else
#define LNEXT_CHAR '\026'
#endif
#endif /*F_TERMIO*/

#ifdef F_STTY
#include <sgtty.h>
struct tchars tch;
struct ltchars ltch;
struct sgttyb cooked, cbreak;
#define GTTY(fd, st)    ioctl(fd, TIOCGETP, (st))
#define STTY(fd, st)    ioctl(fd, TIOCSETN, (st))
#define EOF_CHAR (tch.t_eofc)
#define ERASE_CHAR  (cooked.sg_erase)
#define KILL_CHAR   (cooked.sg_kill)
#ifdef TIOCGLTC
#define WERASE_CHAR  (ltch.t_werasc)
#define REPRINT_CHAR (ltch.t_rprntc)
#define LNEXT_CHAR   (ltch.t_lnextc)
#else
#define WERASE_CHAR  '\027'
#define REPRINT_CHAR '\022'
#define LNEXT_CHAR   '\026'
#endif
#endif /*F_STTY*/

#ifdef L_FLOCK
#include <sys/file.h>
#define LOCK(file)      flock(fileno(file), LOCK_EX)
#define UNLOCK(file)    flock(fileno(file), LOCK_UN)
#endif /*L_FLOCK*/

#ifdef L_LOCKF
#define LOCK(file)      fseek(file, 0L, 0), lockf(file, 1, 0L)
#define UNLOCK(file)    fseek(file, 0L, 0), lockf(file, 0, 0L)
#endif /*L_LOCKF*/

#ifdef L_LOCKING
#define LOCK(file)      fseek(file, 0L, 0), chk_lock(file, 1)
#define UNLOCK(file)    fseek(file, 0L, 0), chk_lock(file, 0)
#endif /*L_LOCKING*/

#ifdef SUID
#define CHN_MODE 0644
#define DEP_MODE 0600
#define USR_MODE 0600

#ifdef _POSIX_SAVED_IDS
#define be_user()  seteuid(real_id)
#define be_party() seteuid(eff_id)
#else
#ifdef CANT_RESET
#define be_user()
#define be_party()
#else
#define be_user()  setreuid(eff_id,real_id)
#define be_party() setreuid(real_id,eff_id)
#endif /*CANT_RESET*/
#endif /*_POSIX_SAVED_IDS*/
#endif /*SUID*/

#ifdef SGID
#define CHN_MODE 0664
#define USR_MODE 0664
#define DEP_MODE 0660

#ifdef _POSIX_SAVED_IDS
#define be_user()  setegid(real_id)
#define be_party() setegid(eff_id)
#else
#ifdef CANT_RESET
#define be_user()
#define be_party()
#else
#define be_user()  setregid(eff_id,real_id)
#define be_party() setregid(real_id,eff_id)
#endif /*CANT_RESET*/
#endif /*_POSIX_SAVED_IDS*/
#endif /*SGID*/

#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <ctype.h>

#include <utmp.h>
/* BSDI is only Unix I know of that threatens to change namesize from 8 to
 * anything else.  Most don't even have a define for it. */
#ifndef UT_NAMESIZE
#define UT_NAMESIZE 8
#endif
#ifndef UT_LINESIZE
#define UT_LINESIZE 8
#endif

/* Option table structure */
struct optent {
        char *name;	/* Name for this option */
        char pf;	/* Syntax for this option */
        char yes;	/* Boolean value of this option 0=no, 1=yes, 2=see */
        char *str;	/* String value of this option */
        };

struct cmdent {
        char *name;	/* Name for this command */
        char abbr;	/* Minimum number of characters which must match */
        };

/* Option pf flags - how can the option be used? */
#define PF_SYS	0001		/* Can only be set in partytab */
#define PF_NO	0002		/* Can use "option" and "nooption" form */
#define PF_SEE	0004		/* Can use "seeoption" form */
#define PF_STR	0010		/* Can use "option=string" form */
#define PF_NUM	0020		/* Can use "option=number" form */
#define PF_CHN	0040		/* Reset on chn change.  Not user settable */
#define PF_SHOW	0100		/* Print even without "all" flag */

extern struct optent opt[];	/* Option structure -- see opttab.c */
extern struct cmdent cmd[];	/* Command structure -- see opttab.c */

extern int rst;			/* Party file open for read */
extern FILE *wfd;		/* Party file open for write */
extern int out_fd;		/* Stream to terminal or filter */
extern char *progname;		/* Program name */
extern char *channel;		/* Current channel number (NULL is outside)*/
extern long tailed_from;	/* File offset we last tailed from */
extern char *version;

extern char name[];		/* User's internal name or alias */
extern char realname[];		/* User's real name (used for mail check) */
extern char logname[];		/* Name user logged in under (utmp) */
extern char logtty[];		/* /dev/ttyXX that user logged into (utmp) */
extern long logtime;		/* Time that the user logged in (utmp)*/

extern FILE *debug;		/* Debug output file */
extern int real_id, eff_id;	/* Real and Effective uid */

/* The following buffer gets used for all sorts of things in all sorts of
 * places.  Beware!
 */

#define INDENT UT_NAMESIZE+2	/* Just changing this value won't work */
char inbuf[BFSZ+INDENT+2];	/* Text buffer - first 10 for "name:   " */
char *txbuf;			/* Text buffer - pointer to respose portion */
				/*               of inbuf */

#define CHN_LEN 12		/* Maximum length of channel name */

/* Data structure used in compiling list of channels for :list command */
struct chnname {
        char name[CHN_LEN+1];	/* Name of this command */
        int users;	        /* number of users in this channel */
        struct chnname *next;   /* Next entry */
        };

#ifndef NOIGNORE
/* Structure of linked list of ignored user.  Initially null */
struct ign {
	struct ign *next;
	char name[UT_NAMESIZE+1];
	};
extern struct ign *ignoring;
#endif /*NOIGNORE*/

int alrm(), intr(), hup(), term(), setcols();
#ifdef BSD
int susp();
#endif /*BSD*/
vint err(char *, ...), db(char *, ...);
char *getlogin(), *malloc(), *ctime(), *fgets(), *getenv();
char *chn_file_name(), *getline();
char *strchr(), *strpbrk(), *strrchr(), *strstr();
char *firstin(), *firstout();
struct passwd *getpwnam(), *getpwuid();
struct chnname *who_clist(), *addchn();
char *leafname();
long backup();
time_t time();
vint (*oldsigpipe)();
vint (*(signal()))();
FILE *upopen();
#ifndef NOCLOSE
char *usr_file_name();
#endif