From 5fd83771641d15c418f747bd343ba6738d3875f7 Mon Sep 17 00:00:00 2001
From: Cameron Katri <me@cameronkatri.com>
Date: Sun, 9 May 2021 14:20:58 -0400
Subject: Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
---
 network_cmds/mnc.tproj/mnc_main.c | 131 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 network_cmds/mnc.tproj/mnc_main.c

(limited to 'network_cmds/mnc.tproj/mnc_main.c')

diff --git a/network_cmds/mnc.tproj/mnc_main.c b/network_cmds/mnc.tproj/mnc_main.c
new file mode 100644
index 0000000..1e5c5af
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc_main.c
@@ -0,0 +1,131 @@
+/*
+ * $Id: mnc_main.c,v 1.12 2004/09/22 19:14:23 colmmacc Exp $
+ *
+ * mnc_main.c -- Multicast NetCat
+ *
+ * Colm MacCarthaigh, <colm@apache.org>
+ *
+ * Copyright (c) 2007, Colm MacCarthaigh.
+ * Copyright (c) 2004 - 2006, HEAnet Ltd. 
+ *
+ * This software is an open source.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of the HEAnet Ltd. nor the names of its contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 REGENTS 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.
+ *
+ */
+
+#ifndef WINDOWS
+
+/* Non-windows includes */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#else 
+
+/* Windows-specific includes */
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#endif /* WINDOWS */
+
+#include "mnc.h"
+
+int main(int argc, char **argv)
+{
+	/* Utility variables */
+	int				sock,
+					len;
+	char				buffer[1024];
+
+	/* Our main configuration */
+	struct mnc_configuration *	config;
+
+#ifdef WINDOWS
+	WSADATA 			wsaData;
+ 
+	if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0)
+	{
+		mnc_error("This operating system is not supported\n");
+	}
+#endif
+	
+	/* Parse the command line */
+	config = parse_arguments(argc, argv);
+	
+	/* Create a socket */
+	if ((sock = socket(config->group->ai_family, config->group->ai_socktype, 
+ 	    config->group->ai_protocol)) < 0)
+	{
+		mnc_error("Could not create socket\n");
+	}
+
+	/* Are we supposed to listen? */
+	if (config->mode == LISTENER)
+	{
+		/* Set up the socket for listening */
+		if (multicast_setup_listen(sock, config->group, config->source, 
+		                 config->iface) < 0)
+		{
+			mnc_error("Can not listen for multicast packets.\n");
+		}
+
+		/* Recieve the packets */
+		while ((len = recvfrom(sock, buffer, sizeof(buffer), 
+		                       0, NULL, NULL)) >= 0)
+		{	
+			write(STDOUT_FILENO, buffer, len);
+		}
+	}
+	else /* Assume MODE == SENDER */
+	{
+		/* Set up the socket for sending */
+		if (multicast_setup_send(sock, config->group, config->source) 
+		    < 0)
+		{
+			mnc_error("Can not send multicast packets\n");
+		}
+		
+		/* Send the packets */
+		while((len = read(STDIN_FILENO, buffer, sizeof(buffer))) > 0)
+		{
+			sendto(sock, buffer, len, 0, config->group->ai_addr, 
+			       config->group->ai_addrlen);
+		}
+	}
+	
+	/* Close the socket */
+	close(sock);
+
+	return 0;
+}
-- 
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