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

8 files changed, 1105 insertions, 0 deletions

diff --git a/network_cmds/mnc.tproj/LICENCE b/network_cmds/mnc.tproj/LICENCE
new file mode 100644
index 0000000..4fec3e3
--- /dev/null
+++ b/network_cmds/mnc.tproj/LICENCE
@@ -0,0 +1,37 @@
+/*
+ * 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.
+ *
+ */
+
diff --git a/network_cmds/mnc.tproj/README b/network_cmds/mnc.tproj/README
new file mode 100644
index 0000000..77cbaa8
--- /dev/null
+++ b/network_cmds/mnc.tproj/README
@@ -0,0 +1,63 @@
+1                             MNC - Multicast NetCat
+                            ------------------------
+
+1. Introduction
+
+mnc is a simple, one-direction-at-a-time, "netcat"-like application using
+multicast. The aim is to provide a tool for easy debugging and testing when
+setting up a multicast network or host. MNC supports IPv4 and IPv6
+any-source-multicast and single-source-multicast, but depending on your
+platform some of those features may not be available:
+       
+       L = Listen (Implies IGMP/MLD mupport)
+       S = Send
+       
+       +----------+----------+----------+----------+----------+
+       | Platform | IPv4 ASM | IPv4 SSM | IPv6 ASM | IPv6 SSM |
+       +----------+----------+----------+----------+----------+
+       | *nix     |  L + S   |  L + S   |  L + S   |  L + S   |
+       +----------+----------+----------+----------+----------+
+       | Win2k    |  L + S   |    S     |   None   |   None   |
+       +----------+----------+----------+----------+----------+
+       | WinXP    |  L + S   |  L + S   |    S     |    S     |
+       +----------+----------+----------+----------+----------+
+       | Win2k3   |  L + S   |  L + S   |    S     |    S     |
+       +----------+----------+----------+----------+----------+
+       
+man doc/mnc.1 for information and help on how to run multicast.
+
+2. Supported platforms
+
+As of September 2004, mnc has been compiled and tested with Linux 2.6.8
+kernels, the BSD KAME stack and Windows XP Profesional. Currently automatic
+interface selection does not work on a KAME-based host and you will need to
+specify the interface when in listening mode.
+
+3. Installing mnc from source on UNIX:
+
+	./configure ; make ; make install
+
+4. Compiling from source on Windows:
+
+nmc is compilable with free utilities available from Microsoft. You need to
+download and install the free (as in beer) MS Visual C++ command-line tools
+from:
+	
+	http://msdn.microsoft.com/visualc/vctoolkit2003/
+
+and the SDK relevant to your platform from:
+
+	http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
+
+You can run a Visual C++ command-line session, and use:
+
+	cl /DWINDOWS=1 /TC /c *.c 
+	link /fixed /out:mnc.exe *.obj ws2_32.lib
+
+to compile a working mnc.exe. The Windows version of MNC does not yet fully
+support IPv6 due to underlying limitation in the Operating System.
+
+5. Reporting problems
+
+Any problems, bugs or suggested features should be mailed to colm
+at apache.org.
diff --git a/network_cmds/mnc.tproj/mnc.1 b/network_cmds/mnc.tproj/mnc.1
new file mode 100644
index 0000000..ed1073b
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc.1
@@ -0,0 +1,101 @@
+.\"
+.\" mnc.1 -- mnc manual
+.\"
+.\" Colm MacCárthaigh, <colm@apache.org>
+.\"
+.\" Copyright (c) 2007 Coolm 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.
+.\"
+.TH mnc 1 "17 September 2004" "mnc"
+.SH NAME
+mnc \- Multicast NetCat
+.SH SYNOPSIS
+.BR mnc 
+[ -l ] [ -i interface ] [ -p port ] group-id [ source-address ]
+.SH DESCRIPTION
+.B mnc
+is designed for simple multicast debugging and testing. It supports
+IPv4 and IPv6 any-source multicast and source-specific multicast.
+In standard mode it will multicast the standard-input verbatim. 
+In listening mode it recieves the content and displays it on the 
+standard output.
+.PP
+When given the optional source-address, mnc will attempt to use
+source-specific multicast. You may also specify this address
+in standard mode and mnc will use this source-address for
+outgoing packets.
+.PP
+.SH OPTIONS
+.IP \-l
+Listen for multicast packets. Default is to send.
+.IP \-i\ "interface"
+When listening for multicast packets, use the specified interface.
+.IP \-p\ "port"
+Specify a UDP port to use for sending or receiving packets. Default is to use port 1234.
+.SH "SEE ALSO"
+.BR nc (1)
+.PP
+.SH EXAMPLES
+To send IPv4 packets to an ASM group-id:
+.PP
+.RS 
+mnc 233.1.2.3 
+.RE
+.PP
+To receive IPv4 ASM packets from the same group-id, using eth0 as
+the listening interface:
+.PP
+.RS
+mnc -l -i eth0 233.1.2.3
+.RE
+.PP
+To receive IPv4 packets from an SSM group-id, using eth1 as the
+listening interface and 193.1.219.90 as the permitted source:
+.PP
+.RS
+mnc -l -i eth1 232.0.0.1 193.1.219.90
+.RE
+.PP
+To receive IPv6 packets from an SSM group-id, using eth1 as the
+listening interface and 2001:770:18:2::90 as the permitted source:
+.PP
+.RS
+mnc -l -i eth1 ff31::12 2001:770:18:2::90
+.RE
+.PP
+.SH CREDITS
+mnc is by Colm MacCárthaigh <colm@apache.org> and is available from:
+.PP
+http://people.apache.org/~colm/mnc/ 
+.PP
+Additional multicast development and support provided by John Lyons 
+<john.lyons@heanet.ie> and Eoin Kenny <eoin.kenny@heanet.ie>
diff --git a/network_cmds/mnc.tproj/mnc.h b/network_cmds/mnc.tproj/mnc.h
new file mode 100644
index 0000000..db6e68e
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc.h
@@ -0,0 +1,92 @@
+/*
+ * $Id: mnc.h,v 1.4 2004/09/22 14:07:10 colmmacc Exp $
+ *
+ * mnc.h -- 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 _MNC_H_
+#define _MNC_H_
+
+#ifndef WINDOWS
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+#else
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#endif
+
+/* The UDP port MNC will use by default */
+#define MNC_DEFAULT_PORT    	"1234"
+
+struct mnc_configuration
+{
+	/* Are we sending or recieving ? */
+	enum {SENDER, LISTENER}	mode;
+
+	/* What UDP port are we using ? */
+	char	*		port;
+	
+	/* The group-id */
+	struct addrinfo	*	group;
+
+	/* The source */
+	struct addrinfo *	source;
+	
+	/* An interface index for listening */
+	char	*		iface;
+};
+
+
+/* Functions in mnc_opts.c */
+void 				usage(void);
+struct mnc_configuration * 	parse_arguments(int argc, char **argv);
+
+/* Functions in mnc_multicast.c */
+int multicast_setup_listen(int, struct addrinfo *, struct addrinfo *, char *);
+int multicast_setup_send(int, struct addrinfo *, struct addrinfo *);
+
+/* Functions in mnc_error.c */
+void mnc_warning(char * string, ...);
+void mnc_error(char * string, ...);
+
+#endif /* _MNC_H_ */
diff --git a/network_cmds/mnc.tproj/mnc_error.c b/network_cmds/mnc.tproj/mnc_error.c
new file mode 100644
index 0000000..4478e7e
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc_error.c
@@ -0,0 +1,95 @@
+/*
+ * $Id: mnc_error.c,v 1.2 2004/09/22 16:02:26 colmmacc Exp $
+ *
+ * mnc_multicast.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.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "mnc.h"
+
+void mnc_warning(char * string, ...)
+{
+	va_list ap;
+
+	/* Do the vararg stuff */
+	va_start(ap, string);
+		
+	/* Output our name */
+	if (fprintf(stderr, "mnc: ") < 0)
+	{
+		exit(2);
+	}
+
+	/* Output our error */
+	if (vfprintf(stderr, string, ap) < 0)
+	{
+		exit(2);
+	}
+
+	/* End the vararg stuff */
+	va_end(ap);
+}
+	
+void mnc_error(char * string, ...)
+{
+	va_list ap;
+
+	/* Do the vararg stuff */
+	va_start(ap, string);
+	
+	/* Output our name */
+	if (fprintf(stderr, "mnc: ") < 0)
+	{
+		exit(2);
+	}
+
+	/* Output our error */
+	if (vfprintf(stderr, string, ap) < 0)
+	{
+		exit(2);
+	}
+
+	/* End the vararg stuff */
+	va_end(ap);
+
+	/* Die! */
+	exit(1);
+}
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;
+}
diff --git a/network_cmds/mnc.tproj/mnc_multicast.c b/network_cmds/mnc.tproj/mnc_multicast.c
new file mode 100644
index 0000000..35f3415
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc_multicast.c
@@ -0,0 +1,404 @@
+/*
+ * $Id: mnc_multicast.c,v 1.8 2004/09/22 19:14:23 colmmacc Exp $
+ *
+ * mnc_multicast.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
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <string.h>
+#include <netdb.h>
+#include <errno.h>
+
+#else
+
+#include <sys/types.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <stdlib.h>
+
+#endif
+
+#include "mnc.h"
+
+#ifndef MCAST_JOIN_GROUP
+
+#ifdef IP_ADD_SOURCE_MEMBERSHIP
+int mnc_join_ipv4_ssm(int socket, struct addrinfo * group, 
+                      struct addrinfo * source, char * iface)
+{
+	struct	ip_mreq_source	multicast_request;
+
+	if (iface != NULL)
+	{
+		/* See if interface is a literal IPv4 address */
+		if ((multicast_request.imr_interface.s_addr = 
+		     inet_addr(iface)) == INADDR_NONE)
+		{
+			mnc_warning("Invalid interface address\n");
+			return -1;
+		}
+	}
+	else
+	{
+		/* set the interface to the default */
+		multicast_request.imr_interface.s_addr = htonl(INADDR_ANY);
+	}
+
+	multicast_request.imr_multiaddr.s_addr = 
+	                ((struct sockaddr_in *)group->ai_addr)->sin_addr.s_addr;
+
+	multicast_request.imr_sourceaddr.s_addr = 
+	               ((struct sockaddr_in *)source->ai_addr)->sin_addr.s_addr;
+	
+	/* Set the socket option */
+	if (setsockopt(socket, IPPROTO_IP, IP_ADD_SOURCE_MEMBERSHIP,
+	               (char *) &multicast_request, 
+	               sizeof(multicast_request)) != 0)
+	{
+		mnc_warning("Could not join the multicast group: %s\n", 
+		            strerror(errno));
+
+		return -1;
+	}
+	
+	return 0;
+}
+#else
+
+int mnc_join_ipv4_ssm(int socket, struct addrinfo * group, 
+                      struct addrinfo * source, char * iface)
+{
+	mnc_warning("Sorry, No support for IPv4 source-specific multicast in this build\n");
+	
+	return -1;
+}
+#endif
+
+int mnc_join_ipv6_ssm(int socket, struct addrinfo * group, 
+                      struct addrinfo * source, char * iface)
+{
+	mnc_warning("Sorry, No support for IPv6 source-specific multicast in this build\n");
+	
+	return -1;
+}
+#else /* if MCAST_JOIN_GROUP  .. */
+
+#define mnc_join_ipv6_asm(a, b, c)      mnc_join_ip_asm((a), (b), (c))
+#define mnc_join_ipv4_asm(a, b, c)      mnc_join_ip_asm((a), (b), (c))
+
+int mnc_join_ip_asm(int socket, struct addrinfo * group, char * iface)
+{
+	struct	group_req	multicast_request;
+	int			ip_proto;
+
+	if (group->ai_family == AF_INET6)
+	{
+		ip_proto = IPPROTO_IPV6;
+	}
+	else
+	{
+		ip_proto = IPPROTO_IP;
+	}
+	
+	if (iface != NULL)
+	{
+		if ((multicast_request.gr_interface = if_nametoindex(iface)) 
+		    == 0)
+		{
+			mnc_warning("Ignoring unknown interface: %s\n", iface);
+		}
+	}
+	else
+	{
+		multicast_request.gr_interface = 0;
+	}		
+			
+	memcpy(&multicast_request.gr_group, group->ai_addr, group->ai_addrlen);
+
+	/* Set the socket option */
+	if (setsockopt(socket, ip_proto, MCAST_JOIN_GROUP, (char *)
+	               &multicast_request, sizeof(multicast_request)) != 0)
+	{
+		mnc_warning("Could not join the multicast group: %s\n", 
+		            strerror(errno));
+
+		return -1;
+	}
+	
+	return 0;
+}
+
+#endif /* MCAST_JOIN_GROUP */
+
+#ifndef MCAST_JOIN_SOURCE_GROUP
+int mnc_join_ipv4_asm(int socket, struct addrinfo * group, char * iface)
+{
+	struct	ip_mreq		multicast_request;
+	
+	if (iface != NULL)
+	{
+		/* See if interface is a literal IPv4 address */
+		if ((multicast_request.imr_interface.s_addr = 
+		     inet_addr(iface)) == INADDR_NONE)
+		{
+			mnc_warning("Invalid interface address\n");
+			return -1;
+		}
+	}
+	else
+	{
+		/* Set the interface to the default */
+		multicast_request.imr_interface.s_addr = htonl(INADDR_ANY);
+	}
+
+	multicast_request.imr_multiaddr.s_addr = 
+	                ((struct sockaddr_in *)group->ai_addr)->sin_addr.s_addr;
+
+	/* Set the socket option */
+	if (setsockopt(socket, IPPROTO_IP, IP_ADD_MEMBERSHIP, 
+	               (char *) &multicast_request, 
+	               sizeof(multicast_request)) != 0)
+	{
+		mnc_warning("Could not join the multicast group: %s\n", 
+		            strerror(errno));
+
+		return -1;
+	}
+	
+	return 0;
+}
+
+int mnc_join_ipv6_asm(int socket, struct addrinfo * group, char * iface)
+{
+	mnc_warning("Sorry, No support for IPv6 any-source multicast in this build\n");
+	
+	return -1;
+}
+#else /* if MCAST_JOIN_SOURCE_GROUP ... */
+
+#define mnc_join_ipv4_ssm(a, b, c, d)   mnc_join_ip_ssm((a), (b), (c), (d))
+#define mnc_join_ipv6_ssm(a, b, c, d)   mnc_join_ip_ssm((a), (b), (c), (d))
+
+int mnc_join_ip_ssm(int socket, struct addrinfo * group, 
+                      struct addrinfo * source,
+                      char * iface)
+{
+	struct	group_source_req	multicast_request;
+	int				ip_proto;
+
+	if (group->ai_family == AF_INET6)
+	{
+		ip_proto = IPPROTO_IPV6;
+	}
+	else
+	{
+		ip_proto = IPPROTO_IP;
+	}
+	
+	if (iface != NULL)
+	{
+		if ((multicast_request.gsr_interface = if_nametoindex(iface)) 
+		    == 0)
+		{
+			mnc_warning("Ignoring unknown interface: %s\n", iface);
+		}
+	}
+	else
+	{
+		multicast_request.gsr_interface = 0;
+	}		
+	
+	memcpy(&multicast_request.gsr_group, group->ai_addr, group->ai_addrlen);
+	memcpy(&multicast_request.gsr_source, source->ai_addr, 
+	       source->ai_addrlen);
+
+	/* Set the socket option */
+	if (setsockopt(socket, ip_proto, MCAST_JOIN_SOURCE_GROUP, 
+	               (char *) &multicast_request, 
+	               sizeof(multicast_request)) != 0)
+	{
+		mnc_warning("Could not join the multicast group: %s\n", 
+		            strerror(errno));
+
+		return -1;
+	}
+	
+	return 0;
+}
+#endif /* MCAST_JOIN_SOURCE_GROUP */
+
+int multicast_setup_listen(int socket, struct addrinfo * group, 
+                            struct addrinfo * source, char * iface)
+{
+        size_t rcvbuf;
+
+#ifndef WINDOWS
+	/* bind to the group address before anything */
+	if (bind(socket, group->ai_addr, group->ai_addrlen) != 0)
+	{
+		mnc_warning("Could not bind to group-id\n");
+		return -1;
+	}
+#else 
+        if (group->ai_family == AF_INET)
+        {
+                struct sockaddr_in sin;
+
+                sin.sin_family = group->ai_family;
+                sin.sin_port = group->ai_port;
+                sin.sin_addr = INADDR_ANY;
+
+                if (bind(socket, (struct sockaddr *) sin, 
+                         sizeof(sin)) != 0)
+                {
+                        mnc_warning("Could not bind to ::\n");
+                        return -1;
+                }
+        }
+        else if (group->ai_family == AF_INET6)
+        {
+                struct sockaddr_in6 sin6;
+
+                sin6.sin6_family = group->ai_family;
+                sin6.sin6_port = group->ai_port;
+                sin6.sin6_addr = in6addr_any;
+
+                if (bind(socket, (struct sockaddr *) sin6, 
+                         sizeof(sin6)) != 0)
+                {
+                        mnc_warning("Could not bind to ::\n");
+                        return -1;
+                }
+        }
+#endif
+
+        /* Set a receive buffer size of 64k */
+        rcvbuf = 1 << 15;
+        if (setsockopt(socket, SOL_SOCKET, SO_RCVBUF, &rcvbuf, 
+                       sizeof(rcvbuf)) < 0) {
+                mnc_warning("Could not set receive buffer to 64k\n");
+        }
+
+	if (source != NULL)
+	{
+		if (group->ai_family == AF_INET6)
+		{
+			/* Use whatever IPv6 API is appropriate */
+			return 
+			    mnc_join_ipv6_ssm(socket, group, source, iface);
+		}
+		else if (group->ai_family == AF_INET)
+		{
+			/* Use the fully portable IPv4 API */
+			return 
+			    mnc_join_ipv4_ssm(socket, group, source, iface);
+		}
+		else
+		{
+			mnc_warning("Only IPv4 and IPv6 are supported\n");
+			return -1;
+		}
+	}
+	else
+	{
+		if (group->ai_family == AF_INET6)
+		{
+			/* Use the fully portable IPv4 API */
+			return 
+			    mnc_join_ipv6_asm(socket, group, iface);
+		}
+		else if (group->ai_family == AF_INET)
+		{
+			/* Use the fully portable IPv4 API */
+			return
+			    mnc_join_ipv4_asm(socket, group, iface);
+		}
+		else
+		{
+			mnc_warning("Only IPv4 and IPv6 are supported\n");
+			return -1;
+		}
+	}
+
+	/* We should never get here */
+	return -1;
+}
+	
+
+int multicast_setup_send(int socket, struct addrinfo * group, 
+                            struct addrinfo * source)
+{
+	int	ttl	= 255;
+	
+	if (source != NULL)
+	{
+		/* bind to the address before anything */
+		if (bind(socket, source->ai_addr, source->ai_addrlen) != 0)
+		{
+			mnc_warning("Could not bind to source-address\n");
+			return -1;
+		}
+	}
+
+	if (group->ai_family == AF_INET)
+	{
+		if (setsockopt(socket, IPPROTO_IP, IP_MULTICAST_TTL, (char *) 
+		               &ttl, sizeof(ttl)) != 0)
+		{
+			mnc_warning("Could not increase the TTL\n");
+			return -1;
+		}
+	}
+	else if (group->ai_family == AF_INET6)
+	{
+		if (setsockopt(socket, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, 
+		               (char *) &ttl, sizeof(ttl)) != 0)
+		{
+			mnc_warning("Could not increase the hop-count\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
diff --git a/network_cmds/mnc.tproj/mnc_opts.c b/network_cmds/mnc.tproj/mnc_opts.c
new file mode 100644
index 0000000..606746f
--- /dev/null
+++ b/network_cmds/mnc.tproj/mnc_opts.c
@@ -0,0 +1,182 @@
+/*
+ * $Id: mnc_opts.c,v 1.3 2004/09/22 16:02:26 colmmacc Exp $
+ *
+ * mnc_opts.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.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifndef WINDOWS
+
+/* UNIX-y includes */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#else
+
+/* WINDOWS-y includes */
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
+
+#include "mnc.h"
+
+/* Display a usage statement */
+void usage(void)
+{
+	fprintf(stderr, 
+		"Usage: mnc [-l] [-i interface] [-p port] group-id "
+		"[source-address]\n\n"
+		"-l :    listen mode\n"
+		"-i :    specify interface to listen\n"
+		"-p :    specify port to listen/send on\n\n");
+	exit(1);
+}
+
+struct mnc_configuration * parse_arguments(int argc, char **argv)
+{
+	/* Utility variables */
+	int					optind,
+						errorcode;
+	struct	addrinfo			hints;
+
+	/* Our persisting configuration */
+	static	struct mnc_configuration	config;
+
+	/* Set some defaults */
+	config.mode	= SENDER;
+	config.port 	= MNC_DEFAULT_PORT;
+	config.iface	= NULL;
+	config.source	= NULL;
+
+	/* Loop through the arguments */
+	for (optind = 1; optind < (argc - 1); optind++)
+	{
+		if ( (argv[optind][0] == '-') || (argv[optind][0] == '/') )
+		{
+			switch(argv[optind][1])
+			{
+				/* Set listening mode */
+				case 'l':	config.mode = LISTENER;
+						break;
+
+				/* Set port */
+				case 'p':	config.port = argv[++optind];
+						break;
+
+				/* Set an interface */
+				case 'i':	config.iface = argv[++optind];
+						break;
+
+				/* Unrecognised option */
+				default:	usage();
+						break;
+			}
+		}
+		else
+		{
+			/* assume we've ran out of options */
+			break;
+		}
+	}
+
+	/* There's a chance we were passed one option */
+	if (optind >= argc || argv[optind][0] == '-')
+	{
+		usage();
+	}
+
+	/* Now make sure we have either exactly 1 or 2 more arguments */
+	if ( (argc - optind) != 1 && (argc - optind) != 2 )
+	{
+		/* We have not been given the right ammount of 
+		   arguments */
+		usage();
+	}
+
+	/* You can't have an interface without also listening */
+	if (config.mode == SENDER && config.iface != NULL)
+	{
+		mnc_error("You may only specify the interface when in"
+				" listening mode\n");
+	}
+
+	/* Set some hints for getaddrinfo */
+	memset(&hints, 0, sizeof(hints));
+	
+	/* We want a UDP socket */
+	hints.ai_socktype = SOCK_DGRAM;
+
+	/* Don't do any name-lookups */
+	hints.ai_flags = AI_NUMERICHOST;
+	
+	/* Get the group-id information */
+	if ( (errorcode =
+	      getaddrinfo(argv[optind], config.port, &hints, &config.group)) != 0)
+	{
+		mnc_error("Error getting group-id address information: %s\n", 
+			  gai_strerror(errorcode));
+	}
+
+	/* Move on to next argument */
+	optind++;
+	
+	/* Get the source information */
+	if ( (argc - optind) == 1)
+	{
+
+		if ( (errorcode = 
+        	      getaddrinfo(argv[optind], config.port, &hints, &config.source)) 
+		    != 0)
+		{
+			mnc_error("Error getting source-address information: %s\n", 
+			          gai_strerror(errorcode));	
+		}
+	
+		/* Confirm that the source and group are in the same Address Family */
+		if ( config.source->ai_family != config.group->ai_family )
+		{
+			mnc_error("Group ID and Source address are not of "
+				  "the same type\n");
+		}
+	}
+
+	return &config;
+}