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 35 #ifndef lint 36 static const char copyright[] = 37 "@(#) Copyright (c) 1983, 1993\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 #endif /* not lint */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 44 #endif 45 static const char rcsid[] = 46 "$Id$"; 47 #endif /* not lint */ 48 49 /* 50 * lprm - remove the current user's spool entry 51 * 52 * lprm [-] [[job #] [user] ...] 53 * 54 * Using information in the lock file, lprm will kill the 55 * currently active daemon (if necessary), remove the associated files, 56 * and startup a new daemon. Priviledged users may remove anyone's spool 57 * entries, otherwise one can only remove their own. 58 */ 59 60 #include <sys/param.h> 61 62 #include <syslog.h> 63 #include <dirent.h> 64 #include <pwd.h> 65 #include <unistd.h> 66 #include <stdlib.h> 67 #include <stdio.h> 68 #include <string.h> 69 #include <ctype.h> 70 #include "lp.h" 71 #include "lp.local.h" 72 73 /* 74 * Stuff for handling job specifications 75 */ 76 char *person; /* name of person doing lprm */ 77 int requ[MAXREQUESTS]; /* job number of spool entries */ 78 int requests; /* # of spool requests */ 79 char *user[MAXUSERS]; /* users to process */ 80 int users; /* # of users in user array */ 81 uid_t uid, euid; /* real and effective user id's */ 82 83 static char luser[16]; /* buffer for person */ 84 85 static void usage __P((void)); 86 87 int 88 main(argc, argv) 89 int argc; 90 char *argv[]; 91 { 92 register char *arg; 93 struct passwd *p; 94 95 uid = getuid(); 96 euid = geteuid(); 97 seteuid(uid); /* be safe */ 98 name = argv[0]; 99 gethostname(host, sizeof(host)); 100 openlog("lpd", 0, LOG_LPR); 101 if ((p = getpwuid(getuid())) == NULL) 102 fatal("Who are you?"); 103 if (strlen(p->pw_name) >= sizeof(luser)) 104 fatal("Your name is too long"); 105 strcpy(luser, p->pw_name); 106 person = luser; 107 while (--argc) { 108 if ((arg = *++argv)[0] == '-') 109 switch (arg[1]) { 110 case 'P': 111 if (arg[2]) 112 printer = &arg[2]; 113 else if (argc > 1) { 114 argc--; 115 printer = *++argv; 116 } 117 break; 118 case '\0': 119 if (!users) { 120 users = -1; 121 break; 122 } 123 default: 124 usage(); 125 } 126 else { 127 if (users < 0) 128 usage(); 129 if (isdigit(arg[0])) { 130 if (requests >= MAXREQUESTS) 131 fatal("Too many requests"); 132 requ[requests++] = atoi(arg); 133 } else { 134 if (users >= MAXUSERS) 135 fatal("Too many users"); 136 user[users++] = arg; 137 } 138 } 139 } 140 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 141 printer = DEFLP; 142 143 rmjob(); 144 exit(0); 145 } 146 147 static void 148 usage() 149 { 150 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 151 exit(2); 152 } 153