1 /* $NetBSD: lprm.c,v 1.19 2008/07/21 13:36:58 lukem Exp $ */ 2 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 <sys/cdefs.h> 34 #ifndef lint 35 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\ 36 The Regents of the University of California. All rights reserved."); 37 #if 0 38 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: lprm.c,v 1.19 2008/07/21 13:36:58 lukem Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 /* 45 * lprm - remove the current user's spool entry 46 * 47 * lprm [-] [[job #] [user] ...] 48 * 49 * Using information in the lock file, lprm will kill the 50 * currently active daemon (if necessary), remove the associated files, 51 * and startup a new daemon. Privileged users may remove anyone's spool 52 * entries, otherwise one can only remove their own. 53 */ 54 55 #include <sys/param.h> 56 57 #include <err.h> 58 #include <syslog.h> 59 #include <dirent.h> 60 #include <pwd.h> 61 #include <unistd.h> 62 #include <stdlib.h> 63 #include <stdio.h> 64 #include <string.h> 65 #include <ctype.h> 66 67 #include "lp.h" 68 #include "lp.local.h" 69 70 /* 71 * Stuff for handling job specifications 72 */ 73 char *person; /* name of person doing lprm */ 74 int requ[MAXREQUESTS]; /* job number of spool entries */ 75 int requests; /* # of spool requests */ 76 char *user[MAXUSERS]; /* users to process */ 77 int users; /* # of users in user array */ 78 uid_t uid, euid; /* real and effective user id's */ 79 80 static char luser[16]; /* buffer for person */ 81 82 static void usage(void) __dead; 83 84 int 85 main(int argc, char *argv[]) 86 { 87 char *arg; 88 struct passwd *p; 89 90 uid = getuid(); 91 euid = geteuid(); 92 seteuid(uid); /* be safe */ 93 setprogname(*argv); 94 gethostname(host, sizeof(host)); 95 host[sizeof(host) - 1] = '\0'; 96 openlog("lpd", 0, LOG_LPR); 97 if ((p = getpwuid(getuid())) == NULL) 98 fatal("Who are you?"); 99 if (strlen(p->pw_name) >= sizeof(luser)) 100 fatal("Your name is too long"); 101 strlcpy(luser, p->pw_name, sizeof(luser)); 102 person = luser; 103 while (--argc) { 104 if ((arg = *++argv)[0] == '-') 105 switch (arg[1]) { 106 case 'P': 107 if (arg[2]) 108 printer = &arg[2]; 109 else if (argc > 1) { 110 argc--; 111 printer = *++argv; 112 } 113 break; 114 case 'w': 115 if (arg[2]) 116 wait_time = atoi(&arg[2]); 117 else if (argc > 1) { 118 argc--; 119 wait_time = atoi(*++argv); 120 } 121 if (wait_time < 0) 122 errx(1, "wait time must be positive: %d", 123 wait_time); 124 if (wait_time < 30) 125 warnx("warning: wait time less than 30 seconds"); 126 break; 127 case '\0': 128 if (!users) { 129 users = -1; 130 break; 131 } 132 default: 133 usage(); 134 } 135 else { 136 if (users < 0) 137 usage(); 138 if (isdigit((unsigned char)arg[0])) { 139 if (requests >= MAXREQUESTS) 140 fatal("Too many requests"); 141 requ[requests++] = atoi(arg); 142 } else { 143 if (users >= MAXUSERS) 144 fatal("Too many users"); 145 user[users++] = arg; 146 } 147 } 148 } 149 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 150 printer = DEFLP; 151 152 rmjob(); 153 exit(0); 154 } 155 156 static void 157 usage(void) 158 { 159 (void)fprintf(stderr, 160 "Usage: %s [-] [-Pprinter] [-w maxwait] [[job #] [user] ...]\n", 161 getprogname()); 162 exit(2); 163 } 164