1 /* $NetBSD: lprm.c,v 1.10 1999/12/07 14:54:48 mrg 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"); 41 #if 0 42 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 43 #else 44 __RCSID("$NetBSD: lprm.c,v 1.10 1999/12/07 14:54:48 mrg Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 /* 49 * lprm - remove the current user's spool entry 50 * 51 * lprm [-] [[job #] [user] ...] 52 * 53 * Using information in the lock file, lprm will kill the 54 * currently active daemon (if necessary), remove the associated files, 55 * and startup a new daemon. Privileged users may remove anyone's spool 56 * entries, otherwise one can only remove their own. 57 */ 58 59 #include <sys/param.h> 60 61 #include <err.h> 62 #include <syslog.h> 63 #include <dirent.h> 64 #include <pwd.h> 65 #include <unistd.h> 66 #include <stdlib.h> 67 #include <stdio.h> 68 #include <string.h> 69 #include <ctype.h> 70 71 #include "lp.h" 72 #include "lp.local.h" 73 74 /* 75 * Stuff for handling job specifications 76 */ 77 char *person; /* name of person doing lprm */ 78 int requ[MAXREQUESTS]; /* job number of spool entries */ 79 int requests; /* # of spool requests */ 80 char *user[MAXUSERS]; /* users to process */ 81 int users; /* # of users in user array */ 82 uid_t uid, euid; /* real and effective user id's */ 83 84 static char luser[16]; /* buffer for person */ 85 86 static void usage __P((void)); 87 int main __P((int, char *[])); 88 89 int 90 main(argc, argv) 91 int argc; 92 char *argv[]; 93 { 94 char *arg; 95 struct passwd *p; 96 97 uid = getuid(); 98 euid = geteuid(); 99 seteuid(uid); /* be safe */ 100 name = argv[0]; 101 gethostname(host, sizeof(host)); 102 host[sizeof(host) - 1] = '\0'; 103 openlog("lpd", 0, LOG_LPR); 104 if ((p = getpwuid(getuid())) == NULL) 105 fatal("Who are you?"); 106 if (strlen(p->pw_name) >= sizeof(luser)) 107 fatal("Your name is too long"); 108 strncpy(luser, p->pw_name, sizeof(luser) - 1); 109 luser[sizeof(luser) - 1] = '\0'; 110 person = luser; 111 while (--argc) { 112 if ((arg = *++argv)[0] == '-') 113 switch (arg[1]) { 114 case 'P': 115 if (arg[2]) 116 printer = &arg[2]; 117 else if (argc > 1) { 118 argc--; 119 printer = *++argv; 120 } 121 break; 122 case 'w': 123 if (arg[2]) 124 wait_time = atoi(&arg[2]); 125 else if (argc > 1) { 126 argc--; 127 wait_time = atoi(*++argv); 128 } 129 if (wait_time < 0) 130 errx(1, "wait time must be postive: %s", 131 optarg); 132 if (wait_time < 30) 133 warnx("warning: wait time less than 30 seconds"); 134 break; 135 case '\0': 136 if (!users) { 137 users = -1; 138 break; 139 } 140 default: 141 usage(); 142 } 143 else { 144 if (users < 0) 145 usage(); 146 if (isdigit(arg[0])) { 147 if (requests >= MAXREQUESTS) 148 fatal("Too many requests"); 149 requ[requests++] = atoi(arg); 150 } else { 151 if (users >= MAXUSERS) 152 fatal("Too many users"); 153 user[users++] = arg; 154 } 155 } 156 } 157 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 158 printer = DEFLP; 159 160 rmjob(); 161 exit(0); 162 } 163 164 static void 165 usage() 166 { 167 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 168 exit(2); 169 } 170