/*      $OpenBSD: lp.h,v 1.21 2016/02/29 17:26:01 jca Exp $     */
/*      $NetBSD: lp.h,v 1.14 2000/04/16 14:43:58 mrg Exp $      */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
 *
 *      @(#)lp.h        8.2 (Berkeley) 4/28/95
 */


/*
 * Global definitions for the line printer system.
 */

extern char     *AF;            /* accounting file */
extern long      BR;            /* baud rate if lp is a tty */
extern char     *CF;            /* name of cifplot filter (per job) */
extern char     *DF;            /* name of tex filter (per job) */
extern long      DU;            /* daemon user-id */
extern char     *FF;            /* form feed string */
extern char     *GF;            /* name of graph(1G) filter (per job) */
extern long      HL;            /* print header last */
extern char     *IF;            /* name of input filter (created per job) */
extern char     *LF;            /* log file for error messages */
extern char     *LO;            /* lock file name */
extern char     *LP;            /* line printer device name */
extern long      MC;            /* maximum number of copies allowed */
extern char     *MS;            /* stty flags to set if lp is a tty */
extern long      MX;            /* maximum number of blocks to copy */
extern char     *NF;            /* name of ditroff(1) filter (per job) */
extern char     *OF;            /* name of output filter (created once) */
extern long      PL;            /* page length */
extern long      PW;            /* page width */
extern long      PX;            /* page width in pixels */
extern long      PY;            /* page length in pixels */
extern char     *RF;            /* name of fortran text filter (per job) */
extern char     *RG;            /* restricted group */
extern char     *RM;            /* remote machine name */
extern char     *RP;            /* remote printer name */
extern long      RS;            /* restricted to those with local accounts */
extern long      RW;            /* open LP for reading and writing */
extern long      SB;            /* short banner instead of normal header */
extern long      SC;            /* suppress multiple copies */
extern char     *SD;            /* spool directory */
extern long      SF;            /* suppress FF on each print job */
extern long      SH;            /* suppress header page */
extern char     *ST;            /* status file name */
extern char     *TF;            /* name of troff(1) filter (per job) */
extern char     *TR;            /* trailer string to be output when Q empties */
extern char     *VF;            /* name of raster filter (per job) */

extern char     line[BUFSIZ];
extern char     *bp;            /* pointer into printcap buffer */
extern char     *printer;       /* printer name */
                                /* host machine name */
extern char     host[HOST_NAME_MAX+1];
extern char     *from;          /* client's machine name */
extern int      remote;         /* true if sending files to a remote host */
extern char     *printcapdb[];  /* printcap database array */
extern u_int    wait_time;      /* time to wait for remote responses */

extern uid_t    real_uid, effective_uid;
extern gid_t    real_gid, effective_gid;

extern volatile sig_atomic_t    gotintr;

/*
 * Structure used for building a sorted list of control files.
 */
struct queue {
        time_t  q_time;                 /* modification time */
        char    q_name[MAXNAMLEN+1];    /* control file name */
};

/*
 * Macros to raise/lower permissions.
 */
#define PRIV_START do {                         \
        int save_errno = errno;                 \
        (void)seteuid(effective_uid);           \
        (void)setegid(effective_gid);           \
        errno = save_errno;                     \
} while (0)

#define PRIV_END do {                           \
        int save_errno = errno;                 \
        (void)setegid(real_gid);                \
        (void)seteuid(real_uid);                \
        errno = save_errno;                     \
} while (0)


__BEGIN_DECLS
struct dirent;

/* common.c */
char    *checkremote(void);
int      ckqueue(char *);
void     fatal(const char *, ...)
    __attribute__((__noreturn__,__format__(__printf__, 1, 2)));
int      get_line(FILE *);
int      getport(char *, int);
int      getq(struct queue ***);
int      safe_open(const char *, int, mode_t);

/* displayq.c */
void     displayq(int);

/* rmjob.c */
void     rmjob(void);

/* startdaemon.c */
int      startdaemon(char *);

__END_DECLS