[packages] dhcp: rename to isc-dhcp and fix ipv6 support

git-svn-id: svn://svn.openwrt.org/openwrt/packages@32897 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/isc-dhcp/files/dhclient-script

@@ -0,0 +1,281 @@
+#!/bin/sh
+
+make_resolv_conf() {
+  if [ x"$new_domain_name_servers" != x ]; then
+    cat /dev/null > /etc/resolv.conf.dhclient
+    chmod 644 /etc/resolv.conf.dhclient
+    if [ x"$new_domain_search" != x ]; then
+      echo search $new_domain_search >> /etc/resolv.conf.dhclient
+    elif [ x"$new_domain_name" != x ]; then
+      # Note that the DHCP 'Domain Name Option' is really just a domain
+      # name, and that this practice of using the domain name option as
+      # a search path is both nonstandard and deprecated.
+      echo search $new_domain_name >> /etc/resolv.conf.dhclient
+    fi
+    for nameserver in $new_domain_name_servers; do
+      echo nameserver $nameserver >>/etc/resolv.conf.dhclient
+    done
+
+  elif [ "x${new_dhcp6_name_servers}" != x ] ; then
+    cat /dev/null > /etc/resolv.conf.dhclient6
+    chmod 644 /etc/resolv.conf.dhclient6
+
+    if [ "x${new_dhcp6_domain_search}" != x ] ; then
+      echo search ${new_dhcp6_domain_search} >> /etc/resolv.conf.dhclient6
+    fi
+    for nameserver in ${new_dhcp6_name_servers} ; do
+      echo nameserver ${nameserver} >> /etc/resolv.conf.dhclient6
+    done
+  fi
+
+  # if both v4 and v6 clients are running, concatenate results
+  cat /etc/resolv.conf.* > /etc/resolv.conf
+}
+
+# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
+exit_with_hooks() {
+  exit_status=$1
+  if [ -f /etc/dhclient-exit-hooks ]; then
+    . /etc/dhclient-exit-hooks
+  fi
+# probably should do something with exit status of the local script
+  exit $exit_status
+}
+
+# Invoke the local dhcp client enter hooks, if they exist.
+if [ -f /etc/dhclient-enter-hooks ]; then
+  exit_status=0
+  . /etc/dhclient-enter-hooks
+  # allow the local script to abort processing of this state
+  # local script must set exit_status variable to nonzero.
+  if [ $exit_status -ne 0 ]; then
+    exit $exit_status
+  fi
+fi
+
+###
+### DHCPv4 Handlers
+###
+
+if [ x$new_broadcast_address != x ]; then
+  new_broadcast_arg="broadcast $new_broadcast_address"
+fi
+if [ x$new_subnet_mask != x ]; then
+  new_subnet_arg="netmask $new_subnet_mask"
+fi
+if [ x$alias_subnet_mask != x ]; then
+  alias_subnet_arg="netmask $alias_subnet_mask"
+fi
+
+if [ x$reason = xMEDIUM ]; then
+  # Linux doesn't do mediums (ok, ok, media).
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xPREINIT ]; then
+  if [ x$alias_ip_address != x ]; then
+    # Bring down alias interface. Its routes will disappear too.
+    ifconfig $interface:0- 0.0.0.0
+  fi
+  ifconfig $interface 0.0.0.0 up
+
+  # We need to give the kernel some time to get the interface up.
+  sleep 1
+
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
+  exit_with_hooks 0
+fi
+  
+if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
+   [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
+  current_hostname=`hostname`
+  if [ x$current_hostname = x ] || \
+     [ x$current_hostname = x$old_host_name ]; then
+    if [ x$current_hostname = x ] || \
+       [ x$new_host_name != x$old_host_name ]; then
+      hostname $new_host_name
+    fi
+  fi
+    
+  if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
+		[ x$alias_ip_address != x$old_ip_address ]; then
+    # Possible new alias. Remove old alias.
+    ifconfig $interface:0- 0.0.0.0
+  fi
+  if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
+    # IP address changed. Bringing down the interface will delete all routes,
+    # and clear the ARP cache.
+    ifconfig $interface 0.0.0.0 down
+
+  fi
+  if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
+     [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
+
+    ifconfig $interface $new_ip_address $new_subnet_arg \
+							$new_broadcast_arg
+    for router in $new_routers; do
+      if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+	route add -host $router dev $interface
+      fi
+      route add default gw $router
+    done
+  fi
+  if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
+   then
+    ifconfig $interface:0- 0.0.0.0
+    ifconfig $interface:0 $alias_ip_address $alias_subnet_arg
+    route add -host $alias_ip_address $interface:0
+  fi
+  make_resolv_conf
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
+   || [ x$reason = xSTOP ]; then
+  if [ x$alias_ip_address != x ]; then
+    # Turn off alias interface.
+    ifconfig $interface:0- 0.0.0.0
+  fi
+  if [ x$old_ip_address != x ]; then
+    # Shut down interface, which will delete routes and clear arp cache.
+    ifconfig $interface 0.0.0.0 down
+  fi
+  if [ x$alias_ip_address != x ]; then
+    ifconfig $interface:0 $alias_ip_address $alias_subnet_arg
+    route add -host $alias_ip_address $interface:0
+  fi
+
+  # remove v4 dns configuration for this interface
+  rm /etc/resolv.conf.dhclient
+  cat /etc/resolv.conf.* > /etc/resolv.conf
+
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xTIMEOUT ]; then
+  if [ x$alias_ip_address != x ]; then
+    ifconfig $interface:0- 0.0.0.0
+  fi
+  ifconfig $interface $new_ip_address $new_subnet_arg \
+					$new_broadcast_arg
+  set $new_routers
+  if ping -q -c 1 $1; then
+    if [ x$new_ip_address != x$alias_ip_address ] && \
+			[ x$alias_ip_address != x ]; then
+      ifconfig $interface:0 $alias_ip_address $alias_subnet_arg
+      route add -host $alias_ip_address dev $interface:0
+    fi
+    for router in $new_routers; do
+      if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+	route add -host $router dev $interface
+      fi
+      route add default gw $router
+    done
+    make_resolv_conf
+    exit_with_hooks 0
+  fi
+  ifconfig $interface 0.0.0.0 down
+  exit_with_hooks 1
+fi
+
+###
+### DHCPv6 Handlers
+###
+
+if [ x$reason = xPREINIT6 ]; then
+  # Ensure interface is up.
+  ifconfig ${interface} up
+
+  # Remove any stale addresses from aborted clients.
+  ip -f inet6 addr flush dev ${interface} scope global
+
+  exit_with_hooks 0
+fi
+
+if [ x${old_ip6_prefix} != x ] || [ x${new_ip6_prefix} != x ] ; then
+    echo Prefix ${reason} old=${old_ip6_prefix} new=${new_ip6_prefix}
+
+    exit_with_hooks 0
+fi
+
+if [ x$reason = xBOUND6 ]; then
+  if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
+    exit_with_hooks 2;
+  fi
+
+  ifconfig ${interface} add ${new_ip6_address}/${new_ip6_prefixlen}
+
+  # Check for nameserver options.
+  make_resolv_conf
+
+### <<
+  # Set up softwire tunnel
+  if [ x${new_dhcp6_softwire} != x ] ; then
+    /etc/init.d/dhclient stop
+    ifconfig ${interface} 0.0.0.0
+    ip -6 tunnel add tun0 mode ipip6 \
+	remote ${new_dhcp6_softwire} \
+	local ${new_ip6_address} \
+	dev ${interface} encaplimit none
+    ip link set tun0 up
+    ip route add default dev tun0
+  fi
+### >>
+
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xRENEW6 ] || [ x$reason = xREBIND6 ]; then
+  if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
+    exit_with_hooks 2;
+  fi
+
+  ifconfig ${interface} add ${new_ip6_address}/${new_ip6_prefixlen}
+
+  # Make sure nothing has moved around on us.
+
+  # Nameservers/domains/etc.
+  if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] ||
+     [ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ] ; then
+    make_resolv_conf
+  fi
+
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xDEPREF6 ]; then
+  if [ x${new_ip6_address} = x ] ; then
+    exit_with_hooks 2;
+  fi
+
+  # Busybox ifconfig has no way to communicate this to the kernel, so ignore it
+
+  exit_with_hooks 0
+fi
+
+if [ x$reason = xEXPIRE6 -o x$reason = xRELEASE6 -o x$reason = xSTOP6 ]; then
+  if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then
+    exit_with_hooks 2;
+  fi
+
+  ifconfig ${interface} del ${old_ip6_address}/${old_ip6_prefixlen}
+
+  # remove v6 dns configuration for this interface
+  rm /etc/resolv.conf.dhclient6
+  cat /etc/resolv.conf.* > /etc/resolv.conf
+
+### <<
+  # Tear down softwire tunnel
+  if [ x${old_dhcp6_softwire} != x ] ; then
+    ip link set tun0 down
+    ip tunnel del tun0
+  fi
+### >>
+
+  exit_with_hooks 0
+fi
+
+exit_with_hooks 0

net/isc-dhcp/files/dhclient.init

@@ -0,0 +1,30 @@
+#!/bin/sh /etc/rc.common
+
+START=60
+
+lease_file=/var/dhclient.leases
+config_file=/etc/dhclient.conf
+pid_file=/var/run/dhclient.pid
+script_file=/usr/sbin/dhclient-script
+
+start() {
+	/usr/sbin/dhclient -q -nw -cf $config_file -lf $lease_file -pf $pid_file -sf $script_file `/sbin/uci get network.wan.ifname`
+	
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+}
+
+stop() {
+	if [ ! -e $pid_file ]; then
+		return 1
+	fi
+
+	kill -9 `cat $pid_file`
+
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+
+	rm $pid_file
+}

net/isc-dhcp/files/dhclient6.conf

@@ -0,0 +1,2 @@
+option dhcp6.softwire code 54 = ip6-address;
+also request dhcp6.softwire;

net/isc-dhcp/files/dhclient6.init

@@ -0,0 +1,30 @@
+#!/bin/sh /etc/rc.common
+
+START=60
+
+lease_file=/var/dhclient6.leases
+config_file=/etc/dhclient6.conf
+pid_file=/var/run/dhclient6.pid
+script_file=/usr/sbin/dhclient-script
+
+start() {
+	/usr/sbin/dhclient -q -nw -6 -cf $config_file -lf $lease_file -pf $pid_file -sf $script_file `/sbin/uci get network.wan.ifname`
+	
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+}
+
+stop() {
+	if [ ! -e $pid_file ]; then
+		return 1
+	fi
+
+	kill -9 `cat $pid_file`
+
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+	
+	rm $pid_file
+}

net/isc-dhcp/files/dhcpd.conf

@@ -0,0 +1,13 @@
+# dhcpd.conf
+
+authoritative;
+
+default-lease-time 3600;
+max-lease-time 86400;
+
+option domain-name-servers 192.168.1.1;
+
+subnet 192.168.1.0 netmask 255.255.255.0 {
+  range 192.168.1.10 192.168.1.50;
+  option routers 192.168.1.1;
+}

net/isc-dhcp/files/dhcpd.init

@@ -0,0 +1,33 @@
+#!/bin/sh /etc/rc.common
+
+START=65
+
+lease_file=/var/dhcpd.leases
+config_file=/etc/dhcpd.conf
+pid_file=/var/run/dhcpd.pid
+
+start() {
+	if [ ! -e $lease_file ]; then
+		touch $lease_file
+	fi
+	
+	/usr/sbin/dhcpd -q -cf $config_file -lf $lease_file -pf $pid_file
+	
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+}
+
+stop() {
+	if [ ! -e $pid_file ]; then
+		return 1
+	fi
+
+	kill -9 `cat $pid_file`
+
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+
+	rm $pid_file
+}

net/isc-dhcp/files/dhcpd6.conf

@@ -0,0 +1,30 @@
+# dhcpd6.conf
+
+authoritative;
+
+default-lease-time 3600;
+max-lease-time 86400;
+
+# Enable RFC 5007 support
+#allow leasequery;
+
+# Global definitions for name server address(es) and domain search list
+#option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:3f3e;
+#option dhcp6.domain-search "test.example.com","example.com";
+
+# Set preference to 255 (maximum) in order to avoid waiting for
+# additional servers when there is only one
+#option dhcp6.preference 255;
+
+# Server side command to enable rapid-commit (2 packet exchange)
+#option dhcp6.rapid-commit;
+
+# The delay before information-request refresh
+#  (minimum is 10 minutes, maximum one day, default is to not refresh)
+#  (set to 6 hours)
+#option dhcp6.info-refresh-time 3600;
+
+subnet6 3ffe:501:ffff:101::/64 {
+	# Use the whole /64 prefix for clients
+	range6 3ffe:501:ffff:101:: /64;
+}

net/isc-dhcp/files/dhcpd6.init

@@ -0,0 +1,33 @@
+#!/bin/sh /etc/rc.common
+
+START=65
+
+lease_file=/var/dhcpd6.leases
+config_file=/etc/dhcpd6.conf
+pid_file=/var/run/dhcpd6.pid
+
+start() {
+	if [ ! -e $lease_file ]; then
+		touch $lease_file
+	fi
+	
+	/usr/sbin/dhcpd -q -6 -cf $config_file -lf $lease_file -pf $pid_file
+	
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+}
+
+stop() {
+	if [ ! -e $pid_file ]; then
+		return 1
+	fi
+
+	kill -9 `cat $pid_file`
+
+	if [ $? -ne 0 ]; then
+		return 1
+	fi
+
+	rm $pid_file
+}