1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * discard inetd service - both stream and dgram based.
29 */
30
31 #include <sys/types.h>
32 #include <sys/socket.h>
33 #include <unistd.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <netinet/in.h>
37 #include <inetsvc.h>
38
39
40 static void
discard_stream(int s,char * argv[])41 discard_stream(int s, char *argv[])
42 {
43 char buffer[BUFSIZ];
44
45 setproctitle("discard", s, argv);
46 while (read(s, buffer, sizeof (buffer)) > 0)
47 ;
48 }
49
50 /* ARGSUSED0 */
51 static void
noop(int s,const struct sockaddr * sap,int sa_size,const void * buf,size_t sz)52 noop(int s, const struct sockaddr *sap, int sa_size, const void *buf, size_t sz)
53 {
54 }
55
56 int
main(int argc,char * argv[])57 main(int argc, char *argv[])
58 {
59 opterr = 0; /* disable getopt error msgs */
60 switch (getopt(argc, argv, "ds")) {
61 case 'd':
62 /*
63 * We don't need to do any work since dg_template consumes the
64 * datagrams for us, and we just ignore them.
65 */
66 dg_template(noop, STDIN_FILENO, NULL, 0);
67 break;
68 case 's':
69 discard_stream(STDIN_FILENO, argv);
70 break;
71 default:
72 return (1);
73 }
74
75 return (0);
76 }
77