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 * @(#)lprm.c 8.1 (Berkeley) 6/6/93 36 * $FreeBSD: src/usr.sbin/lpr/lprm/lprm.c,v 1.6.2.3 2001/06/25 01:01:04 gad Exp $ 37 */ 38 39 /* 40 * lprm - remove the current user's spool entry 41 * 42 * lprm [-] [[job #] [user] ...] 43 * 44 * Using information in the lock file, lprm will kill the 45 * currently active daemon (if necessary), remove the associated files, 46 * and startup a new daemon. Priviledged users may remove anyone's spool 47 * entries, otherwise one can only remove their own. 48 */ 49 50 #include <sys/param.h> 51 52 #include <syslog.h> 53 #include <dirent.h> 54 #include <pwd.h> 55 #include <unistd.h> 56 #include <stdlib.h> 57 #include <stdio.h> 58 #include <string.h> 59 #include <ctype.h> 60 #include "lp.h" 61 #include "lp.local.h" 62 63 /* 64 * Stuff for handling job specifications 65 */ 66 char *person; /* name of person doing lprm */ 67 int requ[MAXREQUESTS]; /* job number of spool entries */ 68 int requests; /* # of spool requests */ 69 char *user[MAXUSERS]; /* users to process */ 70 int users; /* # of users in user array */ 71 uid_t uid, euid; /* real and effective user id's */ 72 73 static char luser[16]; /* buffer for person */ 74 75 static void usage(void); 76 77 int 78 main(int argc, char *argv[]) 79 { 80 char *arg; 81 const char *printer; 82 struct passwd *p; 83 static char root[] = "root"; 84 85 printer = NULL; 86 uid = getuid(); 87 euid = geteuid(); 88 seteuid(uid); /* be safe */ 89 progname = argv[0]; 90 gethostname(local_host, sizeof(local_host)); 91 openlog("lpd", 0, LOG_LPR); 92 93 /* 94 * Bogus code later checks for string equality between 95 * `person' and "root", so if we are root, better make sure 96 * that code will succeed. 97 */ 98 if (getuid() == 0) { 99 person = root; 100 } else if ((person = getlogin()) == NULL) { 101 if ((p = getpwuid(getuid())) == NULL) 102 fatal(0, "Who are you?"); 103 if (strlen(p->pw_name) >= sizeof(luser)) 104 fatal(0, "Your name is too long"); 105 strcpy(luser, p->pw_name); 106 person = luser; 107 } 108 while (--argc) { 109 if ((arg = *++argv)[0] == '-') 110 switch (arg[1]) { 111 case 'P': 112 if (arg[2]) 113 printer = &arg[2]; 114 else if (argc > 1) { 115 argc--; 116 printer = *++argv; 117 } 118 break; 119 case '\0': 120 if (!users) { 121 users = -1; 122 break; 123 } 124 default: 125 usage(); 126 } 127 else { 128 if (users < 0) 129 usage(); 130 if (isdigit(arg[0])) { 131 if (requests >= MAXREQUESTS) 132 fatal(0, "Too many requests"); 133 requ[requests++] = atoi(arg); 134 } else { 135 if (users >= MAXUSERS) 136 fatal(0, "Too many users"); 137 user[users++] = arg; 138 } 139 } 140 } 141 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 142 printer = DEFLP; 143 144 rmjob(printer); 145 exit(0); 146 } 147 148 static void 149 usage(void) 150 { 151 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 152 exit(2); 153 } 154