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 * $DragonFly: src/usr.sbin/lpr/lprm/lprm.c,v 1.2 2003/06/17 04:29:56 dillon Exp $ 38 */ 39 40 /* 41 * lprm - remove the current user's spool entry 42 * 43 * lprm [-] [[job #] [user] ...] 44 * 45 * Using information in the lock file, lprm will kill the 46 * currently active daemon (if necessary), remove the associated files, 47 * and startup a new daemon. Priviledged users may remove anyone's spool 48 * entries, otherwise one can only remove their own. 49 */ 50 51 #include <sys/param.h> 52 53 #include <syslog.h> 54 #include <dirent.h> 55 #include <pwd.h> 56 #include <unistd.h> 57 #include <stdlib.h> 58 #include <stdio.h> 59 #include <string.h> 60 #include <ctype.h> 61 #include "lp.h" 62 #include "lp.local.h" 63 64 /* 65 * Stuff for handling job specifications 66 */ 67 char *person; /* name of person doing lprm */ 68 int requ[MAXREQUESTS]; /* job number of spool entries */ 69 int requests; /* # of spool requests */ 70 char *user[MAXUSERS]; /* users to process */ 71 int users; /* # of users in user array */ 72 uid_t uid, euid; /* real and effective user id's */ 73 74 static char luser[16]; /* buffer for person */ 75 76 int main(int argc, char *_argv[]); 77 static void usage(void); 78 79 int 80 main(int argc, char *argv[]) 81 { 82 char *arg; 83 const char *printer; 84 struct passwd *p; 85 static char root[] = "root"; 86 87 printer = NULL; 88 uid = getuid(); 89 euid = geteuid(); 90 seteuid(uid); /* be safe */ 91 progname = argv[0]; 92 gethostname(local_host, sizeof(local_host)); 93 openlog("lpd", 0, LOG_LPR); 94 95 /* 96 * Bogus code later checks for string equality between 97 * `person' and "root", so if we are root, better make sure 98 * that code will succeed. 99 */ 100 if (getuid() == 0) { 101 person = root; 102 } else if ((person = getlogin()) == NULL) { 103 if ((p = getpwuid(getuid())) == NULL) 104 fatal(0, "Who are you?"); 105 if (strlen(p->pw_name) >= sizeof(luser)) 106 fatal(0, "Your name is too long"); 107 strcpy(luser, p->pw_name); 108 person = luser; 109 } 110 while (--argc) { 111 if ((arg = *++argv)[0] == '-') 112 switch (arg[1]) { 113 case 'P': 114 if (arg[2]) 115 printer = &arg[2]; 116 else if (argc > 1) { 117 argc--; 118 printer = *++argv; 119 } 120 break; 121 case '\0': 122 if (!users) { 123 users = -1; 124 break; 125 } 126 default: 127 usage(); 128 } 129 else { 130 if (users < 0) 131 usage(); 132 if (isdigit(arg[0])) { 133 if (requests >= MAXREQUESTS) 134 fatal(0, "Too many requests"); 135 requ[requests++] = atoi(arg); 136 } else { 137 if (users >= MAXUSERS) 138 fatal(0, "Too many users"); 139 user[users++] = arg; 140 } 141 } 142 } 143 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 144 printer = DEFLP; 145 146 rmjob(printer); 147 exit(0); 148 } 149 150 static void 151 usage(void) 152 { 153 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 154 exit(2); 155 } 156