1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */
34 /*
35 * Spool Queue examination program
36 *
37 * lpq [-a] [-l] [-Pprinter] [user...] [job...]
38 *
39 * -a show all non-null queues on the local machine
40 * -l long output
41 * -P used to identify printer as per lpr/lprm
42 */
43
44 #include <sys/param.h>
45
46 #include <ctype.h>
47 #include <dirent.h>
48 #include <err.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <syslog.h>
52 #include <unistd.h>
53
54 #include "lp.h"
55 #include "lp.local.h"
56 #include "pathnames.h"
57
58 int requ[MAXREQUESTS]; /* job number of spool entries */
59 int requests; /* # of spool requests */
60 char *user[MAXUSERS]; /* users to process */
61 int users; /* # of users in user array */
62
63 uid_t uid, euid;
64
65 static int ckqueue(const struct printer *_pp);
66 static void usage(void);
67 int main(int _argc, char **_argv);
68
69 int
main(int argc,char ** argv)70 main(int argc, char **argv)
71 {
72 int ch, aflag, lflag;
73 const char *printer;
74 struct printer myprinter, *pp = &myprinter;
75
76 printer = NULL;
77 euid = geteuid();
78 uid = getuid();
79 PRIV_END
80 progname = *argv;
81 if (gethostname(local_host, sizeof(local_host)))
82 err(1, "gethostname");
83 openlog("lpd", 0, LOG_LPR);
84
85 aflag = lflag = 0;
86 while ((ch = getopt(argc, argv, "alP:")) != -1)
87 switch((char)ch) {
88 case 'a':
89 ++aflag;
90 break;
91 case 'l': /* long output */
92 ++lflag;
93 break;
94 case 'P': /* printer name */
95 printer = optarg;
96 break;
97 case '?':
98 default:
99 usage();
100 }
101
102 if (!aflag && printer == NULL && (printer = getenv("PRINTER")) == NULL)
103 printer = DEFLP;
104
105 for (argc -= optind, argv += optind; argc; --argc, ++argv)
106 if (isdigit(argv[0][0])) {
107 if (requests >= MAXREQUESTS)
108 fatal(0, "too many requests");
109 requ[requests++] = atoi(*argv);
110 }
111 else {
112 if (users >= MAXUSERS)
113 fatal(0, "too many users");
114 user[users++] = *argv;
115 }
116
117 if (aflag) {
118 int more, status;
119
120 more = firstprinter(pp, &status);
121 if (status)
122 goto looperr;
123 while (more) {
124 if (ckqueue(pp) > 0) {
125 printf("%s:\n", pp->printer);
126 displayq(pp, lflag);
127 printf("\n");
128 }
129 do {
130 more = nextprinter(pp, &status);
131 looperr:
132 switch (status) {
133 case PCAPERR_TCOPEN:
134 printf("warning: %s: unresolved "
135 "tc= reference(s) ",
136 pp->printer);
137 case PCAPERR_SUCCESS:
138 break;
139 default:
140 fatal(pp, "%s", pcaperr(status));
141 }
142 } while (more && status);
143 }
144 } else {
145 int status;
146
147 init_printer(pp);
148 status = getprintcap(printer, pp);
149 if (status < 0)
150 fatal(pp, "%s", pcaperr(status));
151
152 displayq(pp, lflag);
153 }
154 exit(0);
155 }
156
157 static int
ckqueue(const struct printer * pp)158 ckqueue(const struct printer *pp)
159 {
160 register struct dirent *d;
161 DIR *dirp;
162 char *spooldir;
163
164 spooldir = pp->spool_dir;
165 if ((dirp = opendir(spooldir)) == NULL)
166 return (-1);
167 while ((d = readdir(dirp)) != NULL) {
168 if (d->d_name[0] != 'c' || d->d_name[1] != 'f')
169 continue; /* daemon control files only */
170 closedir(dirp);
171 return (1); /* found something */
172 }
173 closedir(dirp);
174 return (0);
175 }
176
177 static void
usage(void)178 usage(void)
179 {
180 fprintf(stderr,
181 "usage: lpq [-a] [-l] [-Pprinter] [user ...] [job ...]\n");
182 exit(1);
183 }
184