1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static const char copyright[] = 35 "@(#) Copyright (c) 1983, 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #if 0 40 #endif 41 42 #include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */ 43 /* 44 * lprm - remove the current user's spool entry 45 * 46 * lprm [-] [[job #] [user] ...] 47 * 48 * Using information in the lock file, lprm will kill the 49 * currently active daemon (if necessary), remove the associated files, 50 * and startup a new daemon. Priviledged users may remove anyone's spool 51 * entries, otherwise one can only remove their own. 52 */ 53 54 #include <sys/param.h> 55 56 #include <syslog.h> 57 #include <dirent.h> 58 #include <err.h> 59 #include <pwd.h> 60 #include <unistd.h> 61 #include <stdlib.h> 62 #include <stdio.h> 63 #include <string.h> 64 #include <ctype.h> 65 #include "lp.h" 66 #include "lp.local.h" 67 68 /* 69 * Stuff for handling job specifications 70 */ 71 char *person; /* name of person doing lprm */ 72 int requ[MAXREQUESTS]; /* job number of spool entries */ 73 int requests; /* # of spool requests */ 74 char *user[MAXUSERS]; /* users to process */ 75 int users; /* # of users in user array */ 76 uid_t uid, euid; /* real and effective user id's */ 77 78 static char luser[16]; /* buffer for person */ 79 80 int main(int argc, char *_argv[]); 81 static void usage(void); 82 83 int 84 main(int argc, char *argv[]) 85 { 86 char *arg; 87 const char *printer; 88 struct passwd *p; 89 static char root[] = "root"; 90 91 printer = NULL; 92 uid = getuid(); 93 euid = geteuid(); 94 PRIV_END /* be safe */ 95 progname = argv[0]; 96 gethostname(local_host, sizeof(local_host)); 97 openlog("lpd", 0, LOG_LPR); 98 99 /* 100 * Bogus code later checks for string equality between 101 * `person' and "root", so if we are root, better make sure 102 * that code will succeed. 103 */ 104 if (getuid() == 0) { 105 person = root; 106 } else if ((person = getlogin()) == NULL) { 107 if ((p = getpwuid(getuid())) == NULL) 108 fatal(0, "Who are you?"); 109 if (strlen(p->pw_name) >= sizeof(luser)) 110 fatal(0, "Your name is too long"); 111 strcpy(luser, p->pw_name); 112 person = luser; 113 } 114 while (--argc) { 115 if ((arg = *++argv)[0] == '-') 116 switch (arg[1]) { 117 case 'P': 118 if (arg[2]) 119 printer = &arg[2]; 120 else if (argc > 1) { 121 argc--; 122 printer = *++argv; 123 } 124 break; 125 case '\0': 126 if (!users) { 127 users = -1; 128 break; 129 } 130 default: 131 usage(); 132 } 133 else { 134 if (users < 0) 135 usage(); 136 if (isdigit(arg[0])) { 137 if (requests >= MAXREQUESTS) 138 fatal(0, "Too many requests"); 139 requ[requests++] = atoi(arg); 140 } else { 141 if (users >= MAXUSERS) 142 fatal(0, "Too many users"); 143 user[users++] = arg; 144 } 145 } 146 } 147 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 148 printer = DEFLP; 149 150 rmjob(printer); 151 exit(0); 152 } 153 154 static void 155 usage(void) 156 { 157 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 158 exit(2); 159 } 160