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 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 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 178 usage(void) 179 { 180 fprintf(stderr, 181 "usage: lpq [-a] [-l] [-Pprinter] [user ...] [job ...]\n"); 182 exit(1); 183 } 184