1/*	$NetBSD: cltest.c,v 1.6 2015/01/22 05:44:28 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2015 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#ifdef HAVE_CONFIG_H
32#include "config.h"
33#endif
34
35#include <sys/cdefs.h>
36__RCSID("$NetBSD: cltest.c,v 1.6 2015/01/22 05:44:28 christos Exp $");
37
38#include <sys/types.h>
39#include <sys/socket.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
42
43#include <stdio.h>
44#include <string.h>
45#include <unistd.h>
46#include <stdlib.h>
47#include <err.h>
48#ifdef HAVE_UTIL_H
49#include <util.h>
50#endif
51
52static __dead void
53usage(int c)
54{
55	warnx("Unknown option `%c'", (char)c);
56	fprintf(stderr, "Usage: %s [-u] [-a <addr>] [-m <msg>] [-p <port>]\n",
57	    getprogname());
58	exit(EXIT_FAILURE);
59}
60
61static void
62getaddr(const char *a, in_port_t p, struct sockaddr_storage *ss,
63    socklen_t *slen)
64{
65	int c;
66
67	memset(ss, 0, sizeof(*ss));
68	p = htons(p);
69
70	if (strchr(a, ':')) {
71		struct sockaddr_in6 *s6 = (void *)ss;
72		c = inet_pton(AF_INET6, a, &s6->sin6_addr);
73		s6->sin6_family = AF_INET6;
74		*slen = sizeof(*s6);
75		s6->sin6_port = p;
76	} else {
77		struct sockaddr_in *s = (void *)ss;
78		c = inet_pton(AF_INET, a, &s->sin_addr);
79		s->sin_family = AF_INET;
80		*slen = sizeof(*s);
81		s->sin_port = p;
82	}
83#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
84	ss->ss_len = (uint8_t)*slen;
85#endif
86	if (c == -1)
87		err(EXIT_FAILURE, "Invalid address `%s'", a);
88}
89
90int
91main(int argc, char *argv[])
92{
93	int sfd;
94	int c;
95	struct sockaddr_storage ss;
96	const char *msg = "hello";
97	const char *addr = "127.0.0.1";
98	int type = SOCK_STREAM;
99	in_port_t port = 6161;
100	socklen_t slen;
101	char buf[128];
102
103	while ((c = getopt(argc, argv, "a:m:p:u")) != -1) {
104		switch (c) {
105		case 'a':
106			addr = optarg;
107			break;
108		case 'm':
109			msg = optarg;
110			break;
111		case 'p':
112			port = (in_port_t)atoi(optarg);
113			break;
114		case 'u':
115			type = SOCK_DGRAM;
116			break;
117		default:
118			usage(c);
119		}
120	}
121
122	getaddr(addr, port, &ss, &slen);
123
124	if ((sfd = socket(AF_INET, type, 0)) == -1)
125		err(EXIT_FAILURE, "socket");
126
127	sockaddr_snprintf(buf, sizeof(buf), "%a:%p", (const void *)&ss);
128	printf("connecting to: %s\n", buf);
129	if (connect(sfd, (const void *)&ss, slen) == -1)
130		err(EXIT_FAILURE, "connect");
131
132	size_t len = strlen(msg) + 1;
133	if (write(sfd, msg, len) != (ssize_t)len)
134		err(EXIT_FAILURE, "write");
135	return 0;
136}
137