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 #if 0 42 #ifndef lint 43 static char sccsid[] = "@(#)lprm.c 8.1 (Berkeley) 6/6/93"; 44 #endif /* not lint */ 45 #endif 46 47 #include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */ 48 __FBSDID("$FreeBSD$"); 49 50 /* 51 * lprm - remove the current user's spool entry 52 * 53 * lprm [-] [[job #] [user] ...] 54 * 55 * Using information in the lock file, lprm will kill the 56 * currently active daemon (if necessary), remove the associated files, 57 * and startup a new daemon. Priviledged users may remove anyone's spool 58 * entries, otherwise one can only remove their own. 59 */ 60 61 #include <sys/param.h> 62 63 #include <syslog.h> 64 #include <dirent.h> 65 #include <pwd.h> 66 #include <unistd.h> 67 #include <stdlib.h> 68 #include <stdio.h> 69 #include <string.h> 70 #include <ctype.h> 71 #include "lp.h" 72 #include "lp.local.h" 73 74 /* 75 * Stuff for handling job specifications 76 */ 77 char *person; /* name of person doing lprm */ 78 int requ[MAXREQUESTS]; /* job number of spool entries */ 79 int requests; /* # of spool requests */ 80 char *user[MAXUSERS]; /* users to process */ 81 int users; /* # of users in user array */ 82 uid_t uid, euid; /* real and effective user id's */ 83 84 static char luser[16]; /* buffer for person */ 85 86 int main(int argc, char *_argv[]); 87 static void usage(void); 88 89 int 90 main(int argc, char *argv[]) 91 { 92 char *arg; 93 const char *printer; 94 struct passwd *p; 95 static char root[] = "root"; 96 97 printer = NULL; 98 uid = getuid(); 99 euid = geteuid(); 100 seteuid(uid); /* be safe */ 101 progname = argv[0]; 102 gethostname(local_host, sizeof(local_host)); 103 openlog("lpd", 0, LOG_LPR); 104 105 /* 106 * Bogus code later checks for string equality between 107 * `person' and "root", so if we are root, better make sure 108 * that code will succeed. 109 */ 110 if (getuid() == 0) { 111 person = root; 112 } else if ((person = getlogin()) == NULL) { 113 if ((p = getpwuid(getuid())) == NULL) 114 fatal(0, "Who are you?"); 115 if (strlen(p->pw_name) >= sizeof(luser)) 116 fatal(0, "Your name is too long"); 117 strcpy(luser, p->pw_name); 118 person = luser; 119 } 120 while (--argc) { 121 if ((arg = *++argv)[0] == '-') 122 switch (arg[1]) { 123 case 'P': 124 if (arg[2]) 125 printer = &arg[2]; 126 else if (argc > 1) { 127 argc--; 128 printer = *++argv; 129 } 130 break; 131 case '\0': 132 if (!users) { 133 users = -1; 134 break; 135 } 136 default: 137 usage(); 138 } 139 else { 140 if (users < 0) 141 usage(); 142 if (isdigit(arg[0])) { 143 if (requests >= MAXREQUESTS) 144 fatal(0, "Too many requests"); 145 requ[requests++] = atoi(arg); 146 } else { 147 if (users >= MAXUSERS) 148 fatal(0, "Too many users"); 149 user[users++] = arg; 150 } 151 } 152 } 153 if (printer == NULL && (printer = getenv("PRINTER")) == NULL) 154 printer = DEFLP; 155 156 rmjob(printer); 157 exit(0); 158 } 159 160 static void 161 usage(void) 162 { 163 fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n"); 164 exit(2); 165 } 166