1 /* $OpenBSD: lprm.c,v 1.5 1997/01/17 16:12:47 millert 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 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1983, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 46 #else 47 static char rcsid[] = "$OpenBSD: lprm.c,v 1.5 1997/01/17 16:12:47 millert Exp $"; 48 #endif 49 #endif /* not lint */ 50 51 /* 52 * lprm - remove the current user's spool entry 53 * 54 * lprm [-] [[job #] [user] ...] 55 * 56 * Using information in the lock file, lprm will kill the 57 * currently active daemon (if necessary), remove the associated files, 58 * and startup a new daemon. Priviledged users may remove anyone's spool 59 * entries, otherwise one can only remove their own. 60 */ 61 62 #include <sys/param.h> 63 64 #include <syslog.h> 65 #include <dirent.h> 66 #include <pwd.h> 67 #include <unistd.h> 68 #include <stdlib.h> 69 #include <stdio.h> 70 #include <string.h> 71 #include <ctype.h> 72 #include "lp.h" 73 #include "lp.local.h" 74 75 /* 76 * Stuff for handling job specifications 77 */ 78 char *person; /* name of person doing lprm */ 79 int requ[MAXREQUESTS]; /* job number of spool entries */ 80 int requests; /* # of spool requests */ 81 char *user[MAXUSERS]; /* users to process */ 82 int users; /* # of users in user array */ 83 uid_t uid, euid; /* real and effective user id's */ 84 85 static char luser[16]; /* buffer for person */ 86 87 void usage __P((void)); 88 89 int 90 main(argc, argv) 91 int argc; 92 char *argv[]; 93 { 94 register 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 openlog("lpd", 0, LOG_LPR); 103 if ((p = getpwuid(getuid())) == NULL) 104 fatal("Who are you?"); 105 if (strlen(p->pw_name) >= sizeof(luser)) 106 fatal("Your name is too long"); 107 strcpy(luser, p->pw_name); 108 person = luser; 109 while (--argc) { 110 if ((arg = *++argv)[0] == '-') 111 switch (arg[1]) { 112 case 'P': 113 if (arg[2]) 114 printer = &arg[2]; 115 else if (argc > 1) { 116 argc--; 117 printer = *++argv; 118 } 119 break; 120 case '\0': 121 if (!users) { 122 users = -1; 123 break; 124 } 125 default: 126 usage(); 127 } 128 else { 129 if (users < 0) 130 usage(); 131 if (isdigit(arg[0])) { 132 if (requests >= MAXREQUESTS) 133 fatal("Too many requests"); 134 requ[requests++] = atoi(arg); 135 } else { 136 if (users >= MAXUSERS) 137 fatal("Too many users"); 138 user[users++] = arg; 139 } 140 } 141 } 142 if (printer == NULL) { 143 char *p; 144 145 printer = DEFLP; 146 if ((p = getenv("PRINTER")) != NULL) 147 printer = p; 148 } 149 150 rmjob(); 151 exit(0); 152 } 153 154 void 155 usage() 156 { 157 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 158 exit(2); 159 } 160