added full udhcp integration

examples/udhcp/sample.bound

@@ -0,0 +1,30 @@
+#!/bin/sh
+# Sample udhcpc renew script
+
+RESOLV_CONF="/etc/udhcpc/resolv.conf"
+
+[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
+[ -n "$subnet" ] && NETMASK="netmask $subnet"
+
+/sbin/ifconfig $interface $ip $BROADCAST $NETMASK
+
+if [ -n "$router" ]
+then
+	echo "deleting routers"
+	while /sbin/route del default gw 0.0.0.0 dev $interface
+	do :
+	done
+
+	for i in $router
+	do
+		/sbin/route add default gw $i dev $interface
+	done
+fi
+
+echo -n > $RESOLV_CONF
+[ -n "$domain" ] && echo domain $domain >> $RESOLV_CONF
+for i in $dns
+do
+	echo adding dns $i
+	echo nameserver $i >> $RESOLV_CONF
+done

examples/udhcp/sample.deconfig

@@ -0,0 +1,4 @@
+#!/bin/sh
+# Sample udhcpc deconfig script
+
+/sbin/ifconfig $interface 0.0.0.0

examples/udhcp/sample.nak

@@ -0,0 +1,4 @@
+#!/bin/sh
+# Sample udhcpc nak script
+
+echo Received a NAK: $message

examples/udhcp/sample.renew

@@ -0,0 +1,30 @@
+#!/bin/sh
+# Sample udhcpc bound script
+
+RESOLV_CONF="/etc/udhcpc/resolv.conf"
+
+[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
+[ -n "$subnet" ] && NETMASK="netmask $subnet"
+
+/sbin/ifconfig $interface $ip $BROADCAST $NETMASK
+
+if [ -n "$router" ]
+then
+	echo "deleting routers"
+	while /sbin/route del default gw 0.0.0.0 dev $interface
+	do :
+	done
+
+	for i in $router
+	do
+		/sbin/route add default gw $i dev $interface
+	done
+fi
+
+echo -n > $RESOLV_CONF
+[ -n "$domain" ] && echo domain $domain >> $RESOLV_CONF
+for i in $dns
+do
+	echo adding dns $i
+	echo nameserver $i >> $RESOLV_CONF
+done

examples/udhcp/sample.script

@@ -0,0 +1,7 @@
+#!/bin/sh
+# Currently, we only dispatch according to command.  However, a more
+# elaborate system might dispatch by command and interface or do some
+# common initialization first, especially if more dhcp event notifications
+# are added.
+
+exec /usr/share/udhcpc/sample.$1

examples/udhcp/simple.script

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# udhcpc script edited by Tim Riker <Tim@Rikers.org>
+
+[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
+
+RESOLV_CONF="/etc/resolv.conf"
+[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
+[ -n "$subnet" ] && NETMASK="netmask $subnet"
+
+case "$1" in
+	deconfig)
+		/sbin/ifconfig $interface 0.0.0.0
+		;;
+
+	renew|bound)
+		/sbin/ifconfig $interface $ip $BROADCAST $NETMASK
+
+		if [ -n "$router" ] ; then
+			echo "deleting routers"
+			while route del default gw 0.0.0.0 dev $interface ; do
+				:
+			done
+
+			for i in $router ; do
+				route add default gw $i dev $interface
+			done
+		fi
+
+		echo -n > $RESOLV_CONF
+		[ -n "$domain" ] && echo search $domain >> $RESOLV_CONF
+		for i in $dns ; do
+			echo adding dns $i
+			echo nameserver $i >> $RESOLV_CONF
+		done
+		;;
+esac
+
+exit 0

examples/udhcp/udhcpd.conf

@@ -0,0 +1,116 @@
+# Sample udhcpd configuration file (/etc/udhcpd.conf)
+
+# The start and end of the IP lease block
+
+start 		192.168.0.20	#default: 192.168.0.20
+end		192.168.0.254	#default: 192.168.0.254
+
+
+# The interface that udhcpd will use
+
+interface	eth0		#default: eth0
+
+
+# The maximim number of leases (includes addressesd reserved
+# by OFFER's, DECLINE's, and ARP conficts
+
+#max_leases	254		#default: 254
+
+
+# If remaining is true (default), udhcpd will store the time
+# remaining for each lease in the udhcpd leases file. This is
+# for embedded systems that cannot keep time between reboots.
+# If you set remaining to no, the absolute time that the lease
+# expires at will be stored in the dhcpd.leases file.
+
+#remaining	yes		#default: yes
+
+
+# The time period at which udhcpd will write out a dhcpd.leases
+# file. If this is 0, udhcpd will never automatically write a
+# lease file. (specified in seconds)
+
+#auto_time	7200		#default: 7200 (2 hours)
+
+
+# The amount of time that an IP will be reserved (leased) for if a 
+# DHCP decline message is received (seconds).
+
+#decline_time	3600		#default: 3600 (1 hour)
+
+
+# The amount of time that an IP will be reserved (leased) for if an
+# ARP conflct occurs. (seconds
+
+#conflict_time	3600		#default: 3600 (1 hour)
+
+
+# How long an offered address is reserved (leased) in seconds
+
+#offer_time	60		#default: 60 (1 minute)
+
+# If a lease to be given is below this value, the full lease time is
+# instead used (seconds).
+
+#min_lease	60		#defult: 60
+
+
+# The location of the leases file
+
+#lease_file	/var/lib/misc/udhcpd.leases	#defualt: /var/lib/misc/udhcpd.leases
+
+# The location of the pid file
+#pidfile	/var/run/udhcpd.pid	#default: /var/run/udhcpd.pid
+
+# Everytime udhcpd writes a leases file, the below script will be called.
+# Useful for writing the lease file to flash every few hours.
+
+#notify_file				#default: (no script)
+
+#notify_file	dumpleases 	# <--- usefull for debugging
+
+# The following are bootp specific options, setable by udhcpd.
+
+#siaddr		192.168.0.22		#default: 0.0.0.0
+
+#sname		zorak			#default: (none)
+
+#boot_file	/var/nfs_root		#default: (none)
+
+# The remainer of options are DHCP options and can be specifed with the
+# keyword 'opt' or 'option'. If an option can take multiple items, such
+# as the dns option, they can be listed on the same line, or multiple
+# lines. The only option with a default is 'lease'.
+
+#Examles
+opt	dns	192.168.10.2 192.168.10.10
+option	subnet	255.255.255.0
+opt	router	192.168.10.2
+opt	wins	192.168.10.10
+option	dns	129.219.13.81	# appened to above DNS servers for a total of 3
+option	domain	local
+option	lease	864000		# 10 days of seconds
+
+
+# Currently supported options, for more info, see options.c
+#subnet
+#timezone
+#router
+#timesvr
+#namesvr
+#dns
+#logsvr
+#cookiesvr
+#lprsvr
+#bootsize
+#domain
+#swapsvr
+#rootpath
+#ipttl
+#mtu
+#broadcast
+#wins
+#lease
+#ntpsrv
+#tftp
+#bootfile