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 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved. 35 * @(#)lpq.c 8.3 (Berkeley) 5/10/95 36 * $FreeBSD: src/usr.sbin/lpr/lpq/lpq.c,v 1.7.2.4 2001/07/22 02:51:53 gad Exp $ 37 * $DragonFly: src/usr.sbin/lpr/lpq/lpq.c,v 1.3 2004/03/22 22:32:50 cpressey Exp $ 38 */ 39 40 /* 41 * Spool Queue examination program 42 * 43 * lpq [-a] [-l] [-Pprinter] [user...] [job...] 44 * 45 * -a show all non-null queues on the local machine 46 * -l long output 47 * -P used to identify printer as per lpr/lprm 48 */ 49 50 #include <sys/param.h> 51 52 #include <ctype.h> 53 #include <dirent.h> 54 #include <err.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <syslog.h> 58 #include <unistd.h> 59 60 #include "lp.h" 61 #include "lp.local.h" 62 #include "pathnames.h" 63 64 int requ[MAXREQUESTS]; /* job number of spool entries */ 65 int requests; /* # of spool requests */ 66 char *user[MAXUSERS]; /* users to process */ 67 int users; /* # of users in user array */ 68 69 uid_t uid, euid; 70 71 static int ckqueue(const struct printer *_pp); 72 static void usage(void); 73 int main(int _argc, char **_argv); 74 75 int 76 main(int argc, char **argv) 77 { 78 int ch, aflag, lflag; 79 const char *printer; 80 struct printer myprinter, *pp = &myprinter; 81 82 printer = NULL; 83 euid = geteuid(); 84 uid = getuid(); 85 seteuid(uid); 86 progname = *argv; 87 if (gethostname(local_host, sizeof(local_host))) 88 err(1, "gethostname"); 89 openlog("lpd", 0, LOG_LPR); 90 91 aflag = lflag = 0; 92 while ((ch = getopt(argc, argv, "alP:")) != -1) 93 switch((char)ch) { 94 case 'a': 95 ++aflag; 96 break; 97 case 'l': /* long output */ 98 ++lflag; 99 break; 100 case 'P': /* printer name */ 101 printer = optarg; 102 break; 103 case '?': 104 default: 105 usage(); 106 } 107 108 if (!aflag && printer == NULL && (printer = getenv("PRINTER")) == NULL) 109 printer = DEFLP; 110 111 for (argc -= optind, argv += optind; argc; --argc, ++argv) 112 if (isdigit(argv[0][0])) { 113 if (requests >= MAXREQUESTS) 114 fatal(0, "too many requests"); 115 requ[requests++] = atoi(*argv); 116 } 117 else { 118 if (users >= MAXUSERS) 119 fatal(0, "too many users"); 120 user[users++] = *argv; 121 } 122 123 if (aflag) { 124 int more, status; 125 126 more = firstprinter(pp, &status); 127 if (status) 128 goto looperr; 129 while (more) { 130 if (ckqueue(pp) > 0) { 131 printf("%s:\n", pp->printer); 132 displayq(pp, lflag); 133 printf("\n"); 134 } 135 do { 136 more = nextprinter(pp, &status); 137 looperr: 138 switch (status) { 139 case PCAPERR_TCOPEN: 140 printf("warning: %s: unresolved " 141 "tc= reference(s) ", 142 pp->printer); 143 case PCAPERR_SUCCESS: 144 break; 145 default: 146 fatal(pp, "%s", pcaperr(status)); 147 } 148 } while (more && status); 149 } 150 } else { 151 int status; 152 153 init_printer(pp); 154 status = getprintcap(printer, pp); 155 if (status < 0) 156 fatal(pp, "%s", pcaperr(status)); 157 158 displayq(pp, lflag); 159 } 160 exit(0); 161 } 162 163 static int 164 ckqueue(const struct printer *pp) 165 { 166 struct dirent *d; 167 DIR *dirp; 168 char *spooldir; 169 170 spooldir = pp->spool_dir; 171 if ((dirp = opendir(spooldir)) == NULL) 172 return (-1); 173 while ((d = readdir(dirp)) != NULL) { 174 if (d->d_name[0] != 'c' || d->d_name[1] != 'f') 175 continue; /* daemon control files only */ 176 closedir(dirp); 177 return (1); /* found something */ 178 } 179 closedir(dirp); 180 return (0); 181 } 182 183 static void 184 usage(void) 185 { 186 fprintf(stderr, 187 "usage: lpq [-a] [-l] [-Pprinter] [user ...] [job ...]\n"); 188 exit(1); 189 } 190