/*      $OpenBSD: lpq.c,v 1.25 2022/12/28 21:30:17 jmc Exp $    */
/*      $NetBSD: lpq.c,v 1.9 1999/12/07 14:54:47 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.
 */

/*
 * Spool Queue examination program
 *
 * lpq [-a] [-l] [-Pprinter] [user...] [job...]
 *
 * -a show all non-null queues on the local machine
 * -l long output
 * -P used to identify printer as per lpr/lprm
 */


#include <ctype.h>
#include <signal.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <limits.h>
#include <syslog.h>

#include "lp.h"
#include "lp.local.h"
#include "pathnames.h"

int      requ[MAXREQUESTS];     /* job number of spool entries */
int      requests;              /* # of spool requests */
char    *user[MAXUSERS];        /* users to process */
int      users;                 /* # of users in user array */

volatile sig_atomic_t gotintr;

static __dead void usage(void);

int
main(int argc, char **argv)
{
        int     ch, aflag, lflag;
        char    *buf, *cp;
        long    l;

        effective_uid = geteuid();
        real_uid = getuid();
        effective_gid = getegid();
        real_gid = getgid();
        PRIV_END;       /* be safe */

        if (gethostname(host, sizeof(host)) != 0)
                err(1, "gethostname");
        openlog("lpq", 0, LOG_LPR);

        aflag = lflag = 0;
        while ((ch = getopt(argc, argv, "alP:w:")) != -1) {
                switch(ch) {
                case 'a':
                        aflag = 1;
                        break;
                case 'l':                       /* long output */
                        lflag = 1;
                        break;
                case 'P':               /* printer name */
                        printer = optarg;
                        break;
                case 'w':
                        l = strtol(optarg, &cp, 10);
                        if (*cp != '\0' || l < 0 || l >= INT_MAX)
                                errx(1, "wait time must be positive integer: %s",
                                    optarg);
                        wait_time = (u_int)l;
                        if (wait_time < 30)
                                warnx("warning: wait time less than 30 seconds");
                        break;
                default:
                        usage();
                }
        }

        if (!aflag && printer == NULL && (printer = getenv("PRINTER")) == NULL)
                printer = DEFLP;

        for (argc -= optind, argv += optind; argc; --argc, ++argv)
                if (isdigit((unsigned char)argv[0][0])) {
                        if (requests >= MAXREQUESTS)
                                fatal("too many requests");
                        requ[requests++] = atoi(*argv);
                }
                else {
                        if (users >= MAXUSERS)
                                fatal("too many users");
                        user[users++] = *argv;
                }

        if (aflag) {
                while (cgetnext(&buf, printcapdb) > 0) {
                        if (ckqueue(buf) <= 0) {
                                free(buf);
                                continue;       /* no jobs */
                        }
                        for (cp = buf; *cp; cp++)
                                if (*cp == '|' || *cp == ':') {
                                        *cp = '\0';
                                        break;
                                }
                        printer = buf;
                        printf("%s:\n", printer);
                        displayq(lflag);
                        free(buf);
                        printf("\n");
                }
        } else
                displayq(lflag);
        exit(0);
}

static __dead void
usage(void)
{
        extern char *__progname;

        fprintf(stderr,
            "usage: %s [-al] [-Pprinter] [job# ...] [user ...]\n",
            __progname);
        exit(1);
}