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lprm.c revision 1.3 
      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 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 static char sccsid[] = "@(#)lprm.c	8.1 (Berkeley) 6/6/93";
     43 #endif /* not lint */
     44 
     45 /*
     46  * lprm - remove the current user's spool entry
     47  *
     48  * lprm [-] [[job #] [user] ...]
     49  *
     50  * Using information in the lock file, lprm will kill the
     51  * currently active daemon (if necessary), remove the associated files,
     52  * and startup a new daemon.  Priviledged users may remove anyone's spool
     53  * entries, otherwise one can only remove their own.
     54  */
     55 
     56 #include <sys/param.h>
     57 
     58 #include <syslog.h>
     59 #include <dirent.h>
     60 #include <pwd.h>
     61 #include <unistd.h>
     62 #include <stdlib.h>
     63 #include <stdio.h>
     64 #include <string.h>
     65 #include <ctype.h>
     66 #include "lp.h"
     67 #include "lp.local.h"
     68 
     69 /*
     70  * Stuff for handling job specifications
     71  */
     72 char	*person;		/* name of person doing lprm */
     73 int	 requ[MAXREQUESTS];	/* job number of spool entries */
     74 int	 requests;		/* # of spool requests */
     75 char	*user[MAXUSERS];	/* users to process */
     76 int	 users;			/* # of users in user array */
     77 
     78 static char	luser[16];	/* buffer for person */
     79 
     80 void usage __P((void));
     81 
     82 int
     83 main(argc, argv)
     84 	int argc;
     85 	char *argv[];
     86 {
     87 	register char *arg;
     88 	struct passwd *p;
     89 
     90 	name = argv[0];
     91 	gethostname(host, sizeof(host));
     92 	openlog("lpd", 0, LOG_LPR);
     93 	if ((p = getpwuid(getuid())) == NULL)
     94 		fatal("Who are you?");
     95 	if (strlen(p->pw_name) >= sizeof(luser))
     96 		fatal("Your name is too long");
     97 	strcpy(luser, p->pw_name);
     98 	person = luser;
     99 	while (--argc) {
    100 		if ((arg = *++argv)[0] == '-')
    101 			switch (arg[1]) {
    102 			case 'P':
    103 				if (arg[2])
    104 					printer = &arg[2];
    105 				else if (argc > 1) {
    106 					argc--;
    107 					printer = *++argv;
    108 				}
    109 				break;
    110 			case '\0':
    111 				if (!users) {
    112 					users = -1;
    113 					break;
    114 				}
    115 			default:
    116 				usage();
    117 			}
    118 		else {
    119 			if (users < 0)
    120 				usage();
    121 			if (isdigit(arg[0])) {
    122 				if (requests >= MAXREQUESTS)
    123 					fatal("Too many requests");
    124 				requ[requests++] = atoi(arg);
    125 			} else {
    126 				if (users >= MAXUSERS)
    127 					fatal("Too many users");
    128 				user[users++] = arg;
    129 			}
    130 		}
    131 	}
    132 	if (printer == NULL && (printer = getenv("PRINTER")) == NULL)
    133 		printer = DEFLP;
    134 
    135 	rmjob();
    136 	exit(0);
    137 }
    138 
    139 void
    140 usage()
    141 {
    142 	fprintf(stderr, "usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n");
    143 	exit(2);
    144 }
    145