lpq.c revision 1.6 
1/*	$NetBSD: lpq.c,v 1.6 1997/10/05 11:52:38 mrg Exp $	*/
2/*
3 * Copyright (c) 1983, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#ifndef lint
37static char copyright[] =
38"@(#) Copyright (c) 1983, 1993\n\
39	The Regents of the University of California.  All rights reserved.\n";
40#endif /* not lint */
41
42#ifndef lint
43static char sccsid[] = "@(#)lpq.c	8.3 (Berkeley) 5/10/95";
44#endif /* not lint */
45
46/*
47 * Spool Queue examination program
48 *
49 * lpq [-a] [-l] [-Pprinter] [user...] [job...]
50 *
51 * -a show all non-null queues on the local machine
52 * -l long output
53 * -P used to identify printer as per lpr/lprm
54 */
55
56#include <sys/param.h>
57
58#include <syslog.h>
59#include <dirent.h>
60#include <unistd.h>
61#include <stdlib.h>
62#include <stdio.h>
63#include <ctype.h>
64#include "lp.h"
65#include "lp.local.h"
66#include "pathnames.h"
67
68int	 requ[MAXREQUESTS];	/* job number of spool entries */
69int	 requests;		/* # of spool requests */
70char	*user[MAXUSERS];	/* users to process */
71int	 users;			/* # of users in user array */
72uid_t	uid, euid;
73
74static int ckqueue __P((char *));
75void usage __P((void));
76
77int
78main(argc, argv)
79	register int	argc;
80	register char	**argv;
81{
82	extern char	*optarg;
83	extern int	optind;
84	int	ch, aflag, lflag;
85	char	*buf, *cp;
86
87	euid = geteuid();
88	uid = getuid();
89	seteuid(uid);
90	name = *argv;
91	if (gethostname(host, sizeof(host))) {
92		perror("lpq: gethostname");
93		exit(1);
94	}
95	openlog("lpd", 0, LOG_LPR);
96
97	aflag = lflag = 0;
98	while ((ch = getopt(argc, argv, "alP:")) != EOF)
99		switch((char)ch) {
100		case 'a':
101			++aflag;
102			break;
103		case 'l':			/* long output */
104			++lflag;
105			break;
106		case 'P':		/* printer name */
107			printer = optarg;
108			break;
109		case '?':
110		default:
111			usage();
112		}
113
114	if (!aflag && printer == NULL && (printer = getenv("PRINTER")) == NULL)
115		printer = DEFLP;
116
117	for (argc -= optind, argv += optind; argc; --argc, ++argv)
118		if (isdigit(argv[0][0])) {
119			if (requests >= MAXREQUESTS)
120				fatal("too many requests");
121			requ[requests++] = atoi(*argv);
122		}
123		else {
124			if (users >= MAXUSERS)
125				fatal("too many users");
126			user[users++] = *argv;
127		}
128
129	if (aflag) {
130		while (cgetnext(&buf, printcapdb) > 0) {
131			if (ckqueue(buf) <= 0) {
132				free(buf);
133				continue;	/* no jobs */
134			}
135			for (cp = buf; *cp; cp++)
136				if (*cp == '|' || *cp == ':') {
137					*cp = '\0';
138					break;
139				}
140			printer = buf;
141			printf("%s:\n", printer);
142			displayq(lflag);
143			free(buf);
144			printf("\n");
145		}
146	} else
147		displayq(lflag);
148	exit(0);
149}
150
151static int
152ckqueue(cap)
153	char *cap;
154{
155	register struct dirent *d;
156	DIR *dirp;
157	char *spooldir;
158
159	if (cgetstr(cap, "sd", &spooldir) == -1)
160		spooldir = _PATH_DEFSPOOL;
161	if ((dirp = opendir(spooldir)) == NULL)
162		return (-1);
163	while ((d = readdir(dirp)) != NULL) {
164		if (d->d_name[0] != 'c' || d->d_name[1] != 'f')
165			continue;	/* daemon control files only */
166		closedir(dirp);
167		return (1);		/* found something */
168	}
169	closedir(dirp);
170	return (0);
171}
172
173void
174usage()
175{
176	puts("usage: lpq [-a] [-l] [-Pprinter] [user ...] [job ...]");
177	exit(1);
178}
179