12017ca883
This import includes The basic blacklist library and utility programs, to add a system-wide packet filtering notification mechanism to FreeBSD. The rational behind the daemon was given by Christos Zoulas in a presentation at vBSDcon 2015: https://youtu.be/fuuf8G28mjs Reviewed by: rpaulo Approved by: rpaulo Obtained from: NetBSD Relnotes: YES Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D5912
137 lines
3.6 KiB
C
137 lines
3.6 KiB
C
/* $NetBSD: cltest.c,v 1.6 2015/01/22 05:44:28 christos Exp $ */
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/*-
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* Copyright (c) 2015 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: cltest.c,v 1.6 2015/01/22 05:44:28 christos Exp $");
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <err.h>
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#ifdef HAVE_UTIL_H
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#include <util.h>
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#endif
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static __dead void
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usage(int c)
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{
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warnx("Unknown option `%c'", (char)c);
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fprintf(stderr, "Usage: %s [-u] [-a <addr>] [-m <msg>] [-p <port>]\n",
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getprogname());
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exit(EXIT_FAILURE);
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}
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static void
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getaddr(const char *a, in_port_t p, struct sockaddr_storage *ss,
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socklen_t *slen)
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{
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int c;
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memset(ss, 0, sizeof(*ss));
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p = htons(p);
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if (strchr(a, ':')) {
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struct sockaddr_in6 *s6 = (void *)ss;
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c = inet_pton(AF_INET6, a, &s6->sin6_addr);
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s6->sin6_family = AF_INET6;
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*slen = sizeof(*s6);
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s6->sin6_port = p;
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} else {
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struct sockaddr_in *s = (void *)ss;
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c = inet_pton(AF_INET, a, &s->sin_addr);
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s->sin_family = AF_INET;
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*slen = sizeof(*s);
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s->sin_port = p;
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}
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#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
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ss->ss_len = (uint8_t)*slen;
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#endif
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if (c == -1)
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err(EXIT_FAILURE, "Invalid address `%s'", a);
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}
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int
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main(int argc, char *argv[])
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{
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int sfd;
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int c;
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struct sockaddr_storage ss;
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const char *msg = "hello";
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const char *addr = "127.0.0.1";
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int type = SOCK_STREAM;
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in_port_t port = 6161;
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socklen_t slen;
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char buf[128];
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while ((c = getopt(argc, argv, "a:m:p:u")) != -1) {
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switch (c) {
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case 'a':
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addr = optarg;
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break;
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case 'm':
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msg = optarg;
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break;
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case 'p':
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port = (in_port_t)atoi(optarg);
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break;
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case 'u':
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type = SOCK_DGRAM;
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break;
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default:
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usage(c);
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}
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}
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getaddr(addr, port, &ss, &slen);
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if ((sfd = socket(AF_INET, type, 0)) == -1)
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err(EXIT_FAILURE, "socket");
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sockaddr_snprintf(buf, sizeof(buf), "%a:%p", (const void *)&ss);
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printf("connecting to: %s\n", buf);
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if (connect(sfd, (const void *)&ss, slen) == -1)
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err(EXIT_FAILURE, "connect");
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size_t len = strlen(msg) + 1;
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if (write(sfd, msg, len) != (ssize_t)len)
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err(EXIT_FAILURE, "write");
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return 0;
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}
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