lpq.c revision 1.4 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by the University of
17 *	California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef lint
36static char copyright[] =
37"@(#) Copyright (c) 1983, 1993\n\
38	The Regents of the University of California.  All rights reserved.\n";
39#endif /* not lint */
40
41#ifndef lint
42static char sccsid[] = "@(#)lpq.c	8.1 (Berkeley) 6/6/93";
43#endif /* not lint */
44
45/*
46 * Spool Queue examination program
47 *
48 * lpq [-l] [-Pprinter] [user...] [job...]
49 *
50 * -l long output
51 * -P used to identify printer as per lpr/lprm
52 */
53
54#include <sys/param.h>
55
56#include <syslog.h>
57#include <dirent.h>
58#include <unistd.h>
59#include <stdlib.h>
60#include <stdio.h>
61#include <ctype.h>
62#include "lp.h"
63#include "lp.local.h"
64
65int	 requ[MAXREQUESTS];	/* job number of spool entries */
66int	 requests;		/* # of spool requests */
67char	*user[MAXUSERS];	/* users to process */
68int	 users;			/* # of users in user array */
69
70uid_t	uid, euid;
71
72void usage __P((void));
73
74int
75main(argc, argv)
76	register int	argc;
77	register char	**argv;
78{
79	extern char	*optarg;
80	extern int	optind;
81	int	ch, lflag;		/* long output option */
82
83	euid = geteuid();
84	uid = getuid();
85	seteuid(uid);
86	name = *argv;
87	if (gethostname(host, sizeof(host))) {
88		perror("lpq: gethostname");
89		exit(1);
90	}
91	openlog("lpd", 0, LOG_LPR);
92
93	lflag = 0;
94	while ((ch = getopt(argc, argv, "lP:")) != EOF)
95		switch((char)ch) {
96		case 'l':			/* long output */
97			++lflag;
98			break;
99		case 'P':		/* printer name */
100			printer = optarg;
101			break;
102		case '?':
103		default:
104			usage();
105		}
106
107	if (printer == NULL && (printer = getenv("PRINTER")) == NULL)
108		printer = DEFLP;
109
110	for (argc -= optind, argv += optind; argc; --argc, ++argv)
111		if (isdigit(argv[0][0])) {
112			if (requests >= MAXREQUESTS)
113				fatal("too many requests");
114			requ[requests++] = atoi(*argv);
115		}
116		else {
117			if (users >= MAXUSERS)
118				fatal("too many users");
119			user[users++] = *argv;
120		}
121
122	displayq(lflag);
123	exit(0);
124}
125
126void
127usage()
128{
129	puts("usage: lpq [-l] [-Pprinter] [user ...] [job ...]");
130	exit(1);
131}
132