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. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved. 31 * @(#)lprm.c 8.1 (Berkeley) 6/6/93 32 * $FreeBSD: src/usr.sbin/lpr/lprm/lprm.c,v 1.6.2.3 2001/06/25 01:01:04 gad Exp $ 33 */ 34 35 /* 36 * lprm - remove the current user's spool entry 37 * 38 * lprm [-] [[job #] [user] ...] 39 * 40 * Using information in the lock file, lprm will kill the 41 * currently active daemon (if necessary), remove the associated files, 42 * and startup a new daemon. Priviledged users may remove anyone's spool 43 * entries, otherwise one can only remove their own. 44 */ 45 46 #include <sys/param.h> 47 48 #include <syslog.h> 49 #include <dirent.h> 50 #include <pwd.h> 51 #include <unistd.h> 52 #include <stdlib.h> 53 #include <stdio.h> 54 #include <string.h> 55 #include <ctype.h> 56 #include "lp.h" 57 #include "lp.local.h" 58 59 /* 60 * Stuff for handling job specifications 61 */ 62 char *person; /* name of person doing lprm */ 63 int requ[MAXREQUESTS]; /* job number of spool entries */ 64 int requests; /* # of spool requests */ 65 char *user[MAXUSERS]; /* users to process */ 66 int users; /* # of users in user array */ 67 uid_t uid, euid; /* real and effective user id's */ 68 69 static char luser[16]; /* buffer for person */ 70 71 static void usage(void); 72 73 int 74 main(int argc, char *argv[]) 75 { 76 char *arg; 77 const char *printer; 78 struct passwd *p; 79 static char root[] = "root"; 80 81 printer = NULL; 82 uid = getuid(); 83 euid = geteuid(); 84 seteuid(uid); /* be safe */ 85 progname = argv[0]; 86 gethostname(local_host, sizeof(local_host)); 87 openlog("lpd", 0, LOG_LPR); 88 89 /* 90 * Bogus code later checks for string equality between 91 * `person' and "root", so if we are root, better make sure 92 * that code will succeed. 93 */ 94 if (getuid() == 0) { 95 person = root; 96 } else if ((person = getlogin()) == NULL) { 97 if ((p = getpwuid(getuid())) == NULL) 98 fatal(0, "Who are you?"); 99 if (strlen(p->pw_name) >= sizeof(luser)) 100 fatal(0, "Your name is too long"); 101 strcpy(luser, p->pw_name); 102 person = luser; 103 } 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(0, "Too many requests"); 129 requ[requests++] = atoi(arg); 130 } else { 131 if (users >= MAXUSERS) 132 fatal(0, "Too many users"); 133 user[users++] = arg; 134 } 135 } 136 } 137 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 138 printer = DEFLP; 139 140 rmjob(printer); 141 exit(0); 142 } 143 144 static void 145 usage(void) 146 { 147 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 148 exit(2); 149 } 150