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 "$FreeBSD$"; 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 int main(int argc, char *_argv[]); 86 static void usage(void); 87 88 int 89 main(int argc, char *argv[]) 90 { 91 char *arg; 92 const char *printer; 93 struct passwd *p; 94 static char root[] = "root"; 95 96 printer = NULL; 97 uid = getuid(); 98 euid = geteuid(); 99 seteuid(uid); /* be safe */ 100 progname = argv[0]; 101 gethostname(local_host, sizeof(local_host)); 102 openlog("lpd", 0, LOG_LPR); 103 104 /* 105 * Bogus code later checks for string equality between 106 * `person' and "root", so if we are root, better make sure 107 * that code will succeed. 108 */ 109 if (getuid() == 0) { 110 person = root; 111 } else if ((person = getlogin()) == NULL) { 112 if ((p = getpwuid(getuid())) == NULL) 113 fatal(0, "Who are you?"); 114 if (strlen(p->pw_name) >= sizeof(luser)) 115 fatal(0, "Your name is too long"); 116 strcpy(luser, p->pw_name); 117 person = luser; 118 } 119 while (--argc) { 120 if ((arg = *++argv)[0] == '-') 121 switch (arg[1]) { 122 case 'P': 123 if (arg[2]) 124 printer = &arg[2]; 125 else if (argc > 1) { 126 argc--; 127 printer = *++argv; 128 } 129 break; 130 case '\0': 131 if (!users) { 132 users = -1; 133 break; 134 } 135 default: 136 usage(); 137 } 138 else { 139 if (users < 0) 140 usage(); 141 if (isdigit(arg[0])) { 142 if (requests >= MAXREQUESTS) 143 fatal(0, "Too many requests"); 144 requ[requests++] = atoi(arg); 145 } else { 146 if (users >= MAXUSERS) 147 fatal(0, "Too many users"); 148 user[users++] = arg; 149 } 150 } 151 } 152 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 153 printer = DEFLP; 154 155 rmjob(printer); 156 exit(0); 157 } 158 159 static void 160 usage(void) 161 { 162 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 163 exit(2); 164 } 165