Annotation of /trunk/mkinitrd-magellan/busybox/examples/var_service/dhcp_if/dhcp_handler

#!/bin/sh
# executed by udhcpc
# parameters: $1 and environment
# $1 is:
#
# deconfig: udhcpc starts, or lease is lost.
# Environment example: interface=eth0
#
# bound: lease is obtained. Environment example:
# dhcptype=5
# serverid=172.16.42.102
# lease=97200
# interface=eth0
# ip=172.16.42.177
# subnet=255.255.255.0
# mask=24
# broadcast=172.16.22.255
# router=172.16.42.98
# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
# domain=lab.example.com example.com
# ntpsrv=10.34.32.125 10.34.255.7
#
# renew: lease is renewed. Environment is similar to "bound".
# The IP address does not change, however, the other DHCP paramaters,
# such as the default gateway, subnet mask, and dns server may change.
#
# nak: udhcpc received a NAK message.
# Environment example: interface=eth0
#
# leasefail: udhcpc cannot obtain a lease (DHCP server not responding, etc).
# Environment example: interface=eth0

# TODO: put $domain into /etc/resolv.conf (thru /var/service/fw)

service=${PWD##*/}
file_ipconf="$service.ipconf"
file_ntpconf="$service.ntpconf"
dir_ipconf="/var/run/service/fw"
dir_ntpconf="/var/run/service/ntp"

exec >/dev/null
#exec >>"$0.out"  #debug
exec 2>&1

echo "`date`: Params: $*"

if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
	# Reconfigure network with this interface disabled
	echo "Deconfiguring"
	rm "$service.out"
	rm "$file_ipconf"
	rm "$file_ntpconf"
	rm "$dir_ipconf/$file_ipconf"
	rm "$dir_ntpconf/$file_ntpconf"
	sv u /var/service/fw
	exit
fi

# Bound: we've got the lease
#env >"$service.out"  # debug

./convert2ipconf "$file_ipconf"
# Reconfigure routing and firewall if needed
diff --brief "$file_ipconf" "$dir_ipconf/$file_ipconf" >/dev/null 2>&1
if test $? != 0; then
	echo "Reconfiguring fw"
	mkdir -p "$dir_ipconf" 2>/dev/null
	cp "$file_ipconf" "$dir_ipconf/$file_ipconf"
	sv u /var/service/fw
fi

if test -d /var/service/ntp; then
	./convert2ntpconf "$file_ntpconf"
	# Reconfigure ntp server addresses if needed
	diff --brief "$file_ntpconf" "$dir_ntpconf/$file_ntpconf" >/dev/null 2>&1
	if test $? != 0; then
		echo "Reconfiguring ntp"
		mkdir -p "$dir_ntpconf" 2>/dev/null
		cp "$file_ntpconf" "$dir_ntpconf/$file_ntpconf"
		sv t /var/service/ntp
		sv u /var/service/ntp
	fi
fi
1	niro	984	#!/bin/sh
2			# executed by udhcpc
3			# parameters: $1 and environment
4			# $1 is:
5			#
6			# deconfig: udhcpc starts, or lease is lost.
7			# Environment example: interface=eth0
8			#
9			# bound: lease is obtained. Environment example:
10			# dhcptype=5
11			# serverid=172.16.42.102
12			# lease=97200
13			# interface=eth0
14			# ip=172.16.42.177
15			# subnet=255.255.255.0
16			# mask=24
17			# broadcast=172.16.22.255
18			# router=172.16.42.98
19			# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
20			# domain=lab.example.com example.com
21			# ntpsrv=10.34.32.125 10.34.255.7
22			#
23			# renew: lease is renewed. Environment is similar to "bound".
24			# The IP address does not change, however, the other DHCP paramaters,
25			# such as the default gateway, subnet mask, and dns server may change.
26			#
27			# nak: udhcpc received a NAK message.
28			# Environment example: interface=eth0
29			#
30			# leasefail: udhcpc cannot obtain a lease (DHCP server not responding, etc).
31			# Environment example: interface=eth0
32
33			# TODO: put $domain into /etc/resolv.conf (thru /var/service/fw)
34
35			service=${PWD##*/}
36			file_ipconf="$service.ipconf"
37			file_ntpconf="$service.ntpconf"
38			dir_ipconf="/var/run/service/fw"
39			dir_ntpconf="/var/run/service/ntp"
40
41			exec >/dev/null
42			#exec >>"$0.out" #debug
43			exec 2>&1
44
45			echo "`date`: Params: $*"
46
47			if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
48			# Reconfigure network with this interface disabled
49			echo "Deconfiguring"
50			rm "$service.out"
51			rm "$file_ipconf"
52			rm "$file_ntpconf"
53			rm "$dir_ipconf/$file_ipconf"
54			rm "$dir_ntpconf/$file_ntpconf"
55			sv u /var/service/fw
56			exit
57			fi
58
59			# Bound: we've got the lease
60			#env >"$service.out" # debug
61
62			./convert2ipconf "$file_ipconf"
63			# Reconfigure routing and firewall if needed
64			diff --brief "$file_ipconf" "$dir_ipconf/$file_ipconf" >/dev/null 2>&1
65			if test $? != 0; then
66			echo "Reconfiguring fw"
67			mkdir -p "$dir_ipconf" 2>/dev/null
68			cp "$file_ipconf" "$dir_ipconf/$file_ipconf"
69			sv u /var/service/fw
70			fi
71
72			if test -d /var/service/ntp; then
73			./convert2ntpconf "$file_ntpconf"
74			# Reconfigure ntp server addresses if needed
75			diff --brief "$file_ntpconf" "$dir_ntpconf/$file_ntpconf" >/dev/null 2>&1
76			if test $? != 0; then
77			echo "Reconfiguring ntp"
78			mkdir -p "$dir_ntpconf" 2>/dev/null
79			cp "$file_ntpconf" "$dir_ntpconf/$file_ntpconf"
80			sv t /var/service/ntp
81			sv u /var/service/ntp
82			fi
83			fi