--- /dev/null
+/* $OpenBSD: broadcast_bind.c,v 1.1 2015/10/27 16:05:54 vgross Exp $ */
+
+/*
+ * Copyright (c) 2015 Vincent Gross <vgross@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <arpa/inet.h>
+
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+
+int test_result = EXIT_SUCCESS;
+
+void
+test_bind(char *paddr, struct in_addr *addr, u_int16_t port, int type, int expected_errno)
+{
+ int s, rc;
+ struct sockaddr_in sin;
+
+ bzero(&sin, sizeof(sin));
+ sin.sin_family = AF_INET;
+ sin.sin_len = sizeof(sin);
+ sin.sin_port = htons(port);
+ memcpy(&sin.sin_addr, addr, sizeof(*addr));
+
+ s = socket(PF_INET, type, 0);
+ if (s < 0) {
+ warn("socket(PF_INET, %d, 0)", type);
+ test_result = EXIT_FAILURE;
+ return;
+ }
+
+ rc = bind(s, (struct sockaddr *)&sin, sin.sin_len);
+ if ((rc == 0 && expected_errno == 0) ||
+ (rc != 0 && expected_errno == errno)) {
+ close(s);
+ return;
+ }
+
+ warn("bind(%s,%d) (type %d) expected %d, got %d", paddr, port, type, expected_errno, errno);
+ test_result = EXIT_FAILURE;
+ close(s);
+ return;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int rc;
+ struct in_addr uc_addr, err_addr, bc_addr;
+ int port = 30000;
+
+ if (argc != 4)
+ errx(EXIT_FAILURE, "needs 2 arguments: <unicast> <error> <broadcast>");
+
+ rc = inet_pton(AF_INET, argv[1], &uc_addr);
+ if (rc != 1) {
+ if (rc)
+ err(EXIT_FAILURE, "inet_pton(unicast)");
+ else
+ errx(EXIT_FAILURE, "inet_pton(unicast): error parsing %s",
+ argv[1]);
+ }
+ rc = inet_pton(AF_INET, argv[2], &err_addr);
+ if (rc != 1) {
+ if (rc)
+ err(EXIT_FAILURE, "inet_pton(error)");
+ else
+ errx(EXIT_FAILURE, "inet_pton(error): error parsing %s",
+ argv[2]);
+ }
+ rc = inet_pton(AF_INET, argv[3], &bc_addr);
+ if (rc != 1) {
+ if (rc)
+ err(EXIT_FAILURE, "inet_pton(broadcast)");
+ else
+ errx(EXIT_FAILURE, "inet_pton(broadcast): error parsing %s",
+ argv[3]);
+ }
+
+ test_result = EXIT_SUCCESS;
+
+ test_bind(argv[1], &uc_addr, port, SOCK_STREAM, 0);
+ test_bind(argv[2], &err_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
+ test_bind(argv[3], &bc_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
+
+ test_bind(argv[1], &uc_addr, port, SOCK_DGRAM, 0);
+ test_bind(argv[2], &err_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
+ test_bind(argv[3], &bc_addr, port, SOCK_DGRAM, 0);
+
+ return test_result;
+}