1 /* $NetBSD: lprm.c,v 1.6 1996/12/09 09:57:49 mrg Exp $ */ 2 /* 3 * Copyright (c) 1983, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1983, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 44 #endif /* not lint */ 45 46 /* 47 * lprm - remove the current user's spool entry 48 * 49 * lprm [-] [[job #] [user] ...] 50 * 51 * Using information in the lock file, lprm will kill the 52 * currently active daemon (if necessary), remove the associated files, 53 * and startup a new daemon. Priviledged users may remove anyone's spool 54 * entries, otherwise one can only remove their own. 55 */ 56 57 #include <sys/param.h> 58 59 #include <syslog.h> 60 #include <dirent.h> 61 #include <pwd.h> 62 #include <unistd.h> 63 #include <stdlib.h> 64 #include <stdio.h> 65 #include <string.h> 66 #include <ctype.h> 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 void usage __P((void)); 83 84 int 85 main(argc, argv) 86 int argc; 87 char *argv[]; 88 { 89 register char *arg; 90 struct passwd *p; 91 92 uid = getuid(); 93 euid = geteuid(); 94 seteuid(uid); /* be safe */ 95 name = argv[0]; 96 gethostname(host, sizeof(host)); 97 openlog("lpd", 0, LOG_LPR); 98 if ((p = getpwuid(getuid())) == NULL) 99 fatal("Who are you?"); 100 if (strlen(p->pw_name) >= sizeof(luser)) 101 fatal("Your name is too long"); 102 strncpy(luser, p->pw_name, sizeof(luser) - 1); 103 person = luser; 104 while (--argc) { 105 if ((arg = *++argv)[0] == '-') 106 switch (arg[1]) { 107 case 'P': 108 if (arg[2]) 109 printer = &arg[2]; 110 else if (argc > 1) { 111 argc--; 112 printer = *++argv; 113 } 114 break; 115 case '\0': 116 if (!users) { 117 users = -1; 118 break; 119 } 120 default: 121 usage(); 122 } 123 else { 124 if (users < 0) 125 usage(); 126 if (isdigit(arg[0])) { 127 if (requests >= MAXREQUESTS) 128 fatal("Too many requests"); 129 requ[requests++] = atoi(arg); 130 } else { 131 if (users >= MAXUSERS) 132 fatal("Too many users"); 133 user[users++] = arg; 134 } 135 } 136 } 137 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 138 printer = DEFLP; 139 140 rmjob(); 141 exit(0); 142 } 143 144 void 145 usage() 146 { 147 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 148 exit(2); 149 } 150