/* $NetBSD: cltest.c,v 1.1.1.1 2020/06/15 01:52:54 christos Exp $ */ /*- * Copyright (c) 2015 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christos Zoulas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include __RCSID("$NetBSD: cltest.c,v 1.1.1.1 2020/06/15 01:52:54 christos Exp $"); #include #include #include #include #include #include #include #include #include #ifdef HAVE_UTIL_H #include #endif static __dead void usage(int c) { warnx("Unknown option `%c'", (char)c); fprintf(stderr, "Usage: %s [-u] [-a ] [-m ] [-p ]\n", getprogname()); exit(EXIT_FAILURE); } static void getaddr(const char *a, in_port_t p, struct sockaddr_storage *ss, socklen_t *slen) { int c; memset(ss, 0, sizeof(*ss)); p = htons(p); if (strchr(a, ':')) { struct sockaddr_in6 *s6 = (void *)ss; c = inet_pton(AF_INET6, a, &s6->sin6_addr); s6->sin6_family = AF_INET6; *slen = sizeof(*s6); s6->sin6_port = p; } else { struct sockaddr_in *s = (void *)ss; c = inet_pton(AF_INET, a, &s->sin_addr); s->sin_family = AF_INET; *slen = sizeof(*s); s->sin_port = p; } #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN ss->ss_len = (uint8_t)*slen; #endif if (c == -1) err(EXIT_FAILURE, "Invalid address `%s'", a); } int main(int argc, char *argv[]) { int sfd; int c; struct sockaddr_storage ss; const char *msg = "hello"; const char *addr = "127.0.0.1"; int type = SOCK_STREAM; in_port_t port = 6161; socklen_t slen; char buf[128]; while ((c = getopt(argc, argv, "a:m:p:u")) != -1) { switch (c) { case 'a': addr = optarg; break; case 'm': msg = optarg; break; case 'p': port = (in_port_t)atoi(optarg); break; case 'u': type = SOCK_DGRAM; break; default: usage(c); } } getaddr(addr, port, &ss, &slen); if ((sfd = socket(AF_INET, type, 0)) == -1) err(EXIT_FAILURE, "socket"); sockaddr_snprintf(buf, sizeof(buf), "%a:%p", (const void *)&ss); printf("connecting to: %s\n", buf); if (connect(sfd, (const void *)&ss, slen) == -1) err(EXIT_FAILURE, "connect"); size_t len = strlen(msg) + 1; if (write(sfd, msg, len) != (ssize_t)len) err(EXIT_FAILURE, "write"); return 0; }