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Network discover utility from Max Holtzberg
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5137 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
@@ -275,6 +275,28 @@ examples/dhcpd
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CONFIGURED_APPS += uiplib
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examples/discover
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^^^^^^^^^^^^^^^^^
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This example execises netutils/discover utility. This example initializes
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and starts the UDP discover daemon. This daemon is useful for discovering
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devices in local networks, especially with DHCP configured devices. It
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listens for UDP broadcasts which also can include a device class so that
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groups of devices can be discovered. It is also possible to address all
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classes with a kind of broadcast discover.
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This example will automatically be built as an NSH built-in if
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CONFIG_NSH_BUILTIN_APPS is selected. Otherwise, it will be a standalone
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program with entry point "discover_main".
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NuttX configuration settings:
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CONFIG_EXAMPLE_DISCOVER_DHCPC - DHCP Client
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CONFIG_EXAMPLE_DISCOVER_NOMAC - Use canned MAC address
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CONFIG_EXAMPLE_DISCOVER_IPADDR - Target IP address
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CONFIG_EXAMPLE_DISCOVER_DRIPADDR - Router IP address
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CONFIG_EXAMPLE_DISCOVER_NETMASK - Network Mask
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examples/ftpc
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^^^^^^^^^^^^^
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@@ -0,0 +1,42 @@
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#
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# For a description of the syntax of this configuration file,
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# see misc/tools/kconfig-language.txt.
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#
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config EXAMPLES_DISCOVER
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bool "UDP Discovery Example"
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default n
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depends on NET_UDP
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select NETUTILS_DISCOVER
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---help---
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Enable the netutils/discover utility. This example initializes and
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starts the UDP discover daemon. This daemon is useful for
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discovering devices in local networks, especially with DHCP
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configured devices. It listens for UDP broadcasts which also can
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include a device class so that groups of devices can be discovered.
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It is also possible to address all classes with a kind of broadcast
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discover.
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if EXAMPLES_DISCOVER
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config EXAMPLE_DISCOVER_DHCPC
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bool "DHCP Client"
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default n
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config EXAMPLE_DISCOVER_NOMAC
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bool "Use canned MAC address"
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default n
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config EXAMPLE_DISCOVER_IPADDR
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hex "Target IP address"
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default 0x0a000002
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config EXAMPLE_DISCOVER_DRIPADDR
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hex "Router IP address"
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default 0x0a000001
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config EXAMPLE_DISCOVER_NETMASK
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hex "Network Mask"
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default 0xffffff00
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endif
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@@ -0,0 +1,106 @@
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############################################################################
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# apps/examples/discover/Makefile
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#
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# Copyright (C) 2012 Max Holtzberg. All rights reserved.
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# Copyright (C) 2008, 2010-2012 Gregory Nutt. All rights reserved.
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#
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# Authors: Max Holtzberg <mh@uvc.de>
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# Gregory Nutt <gnutt@nuttx.org>
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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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#
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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
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# 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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############################################################################
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-include $(TOPDIR)/.config
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-include $(TOPDIR)/Make.defs
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include $(APPDIR)/Make.defs
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# Discover built-in application info
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APPNAME = discover
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PRIORITY = SCHED_PRIORITY_DEFAULT
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STACKSIZE = 2048
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ASRCS =
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CSRCS = main.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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OBJS = $(AOBJS) $(COBJS)
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ifeq ($(WINTOOL),y)
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BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
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else
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BIN = "$(APPDIR)/libapps$(LIBEXT)"
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endif
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ROOTDEPPATH = --dep-path .
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# Common build
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VPATH =
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all: .built
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.PHONY: clean depend distclean
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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.built: $(OBJS)
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@( for obj in $(OBJS) ; do \
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$(call ARCHIVE, $(BIN), $${obj}); \
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done ; )
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@touch .built
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.context:
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ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
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$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
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@touch $@
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endif
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context: .context
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.depend: Makefile $(SRCS)
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@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
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@touch $@
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depend: .depend
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clean:
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@rm -f *.o *~ .*.swp .built
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$(call CLEAN)
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distclean: clean
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@rm -f Make.dep .depend
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-include Make.dep
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@@ -0,0 +1,183 @@
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/****************************************************************************
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* examples/discover/main.c
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*
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* Copyright (C) 2012 Max Holtzberg. All rights reserved.
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* Copyright (C) 2008, 2011-2012 Gregory Nutt. All rights reserved.
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*
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* Authors: Max Holtzberg <mh@uvc.de>
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* Gregory Nutt <gnutt@nuttx.org>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.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 <time.h>
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#include <debug.h>
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#include <net/if.h>
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#include <nuttx/net/uip/uip.h>
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#include <nuttx/net/uip/uip-arp.h>
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#include <apps/netutils/uiplib.h>
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#include <apps/netutils/discover.h>
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#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC
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# include <arpa/inet.h>
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#endif
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/* Here we include the header file for the application(s) we use in
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* our project as defined in the config/<board-name>/defconfig file
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*/
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/* DHCPC may be used in conjunction with any other feature (or not) */
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#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC
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# include <apps/netutils/resolv.h>
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# include <apps/netutils/dhcpc.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* discover_main
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****************************************************************************/
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int discover_main(int argc, char *argv[])
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{
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#ifndef CONFIG_NSH_BUILTIN_APPS
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struct in_addr addr;
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#if defined(CONFIG_EXAMPLE_DISCOVER_DHCPC) || defined(CONFIG_EXAMPLE_DISCOVER_NOMAC)
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uint8_t mac[IFHWADDRLEN];
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#endif
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#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC
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void *handle;
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#endif
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/* Many embedded network interfaces must have a software assigned MAC */
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#ifdef CONFIG_EXAMPLE_DISCOVER_NOMAC
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mac[0] = 0x00;
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mac[1] = 0xe0;
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mac[2] = 0xde;
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mac[3] = 0xad;
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mac[4] = 0xbe;
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mac[5] = 0xef;
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uip_setmacaddr("eth0", mac);
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#endif
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/* Set up our host address */
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#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC
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addr.s_addr = 0;
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#else
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addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_IPADDR);
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#endif
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uip_sethostaddr("eth0", &addr);
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/* Set up the default router address */
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addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_DRIPADDR);
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uip_setdraddr("eth0", &addr);
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/* Setup the subnet mask */
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addr.s_addr = HTONL(CONFIG_EXAMPLE_DISCOVER_NETMASK);
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uip_setnetmask("eth0", &addr);
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#ifdef CONFIG_EXAMPLE_DISCOVER_DHCPC
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/* Set up the resolver */
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resolv_init();
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/* Get the MAC address of the NIC */
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uip_getmacaddr("eth0", mac);
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/* Set up the DHCPC modules */
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handle = dhcpc_open(&mac, IFHWADDRLEN);
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/* Get an IP address. Note: there is no logic here for renewing the address in this
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* example. The address should be renewed in ds.lease_time/2 seconds.
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*/
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printf("Getting IP address\n");
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if (handle)
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{
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struct dhcpc_state ds;
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(void)dhcpc_request(handle, &ds);
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uip_sethostaddr("eth1", &ds.ipaddr);
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if (ds.netmask.s_addr != 0)
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{
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uip_setnetmask("eth0", &ds.netmask);
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}
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if (ds.default_router.s_addr != 0)
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{
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uip_setdraddr("eth0", &ds.default_router);
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}
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if (ds.dnsaddr.s_addr != 0)
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{
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resolv_conf(&ds.dnsaddr);
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}
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dhcpc_close(handle);
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printf("IP: %s\n", inet_ntoa(ds.ipaddr));
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}
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#endif
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#endif /* CONFIG_NSH_BUILTIN_APPS */
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if (discover_start() < 0)
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{
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ndbg("Could not start discover daemon.\n");
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return ERROR;
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}
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return OK;
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}
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