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83 lines
2.5 KiB
Bash
Executable File
83 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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# executed by udhcpc
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# parameters: $1 and environment
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#
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# $1 is:
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#
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# deconfig: This argument is used when udhcpc starts, and
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# when a lease is lost. The script should put the interface in an
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# up, but deconfigured state, ie: ifconfig $interface 0.0.0.0.
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# Environment: interface=ethN
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#
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# bound: This argument is used when udhcpc moves from an
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# unbound, to a bound state. All of the paramaters are set in
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# enviromental variables, The script should configure the interface,
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# and set any other relavent parameters (default gateway, dns server, etc).
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# Environment:
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# dhcptype=5
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# serverid=172.16.42.102
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# lease=97200
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# interface=eth0
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# ip=172.16.42.177
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# subnet=255.255.255.0
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# mask=24
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# broadcast=172.16.22.255
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# router=172.16.42.98
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# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
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# domain=lab.example.com example.com
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# ntpsrv=10.34.32.125 10.34.255.7
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#
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# renew: This argument is used when a DHCP lease is renewed. All of
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# the paramaters are set in enviromental variables. This argument is
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# used when the interface is already configured, so the IP address,
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# will not change, however, the other DHCP paramaters, such as the
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# default gateway, subnet mask, and dns server may change.
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# Environment: same as for "bound".
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#
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# nak: This argument is used with udhcpc receives a NAK message.
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# The script with the deconfig argument will be called directly
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# afterwards, so no changes to the network interface are neccessary.
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# This hook is provided for purely informational purposes (the
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# message option may contain a reason for the NAK).
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# Environment: interface=ethN, serverid=IP_ADDR
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#
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# leasefail: called when lease cannot be obtained
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# (for example, when DHCP server is down).
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# Environment: interface=ethN
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# TODO: put domain into /etc/resolv.conf (thru /var/service/fw)
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# TODO: feed ntp IPs to /var/service/ntp
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service=`basename $PWD`
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outfile="$service.ipconf"
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dir="/var/run/service/fw"
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exec >>"$0.out" 2>&1
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echo "`date`: Params: $*"
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if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
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# Reconfigure network with this interface disabled
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echo "Deconfiguring"
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rm "$service.out"
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rm "$outfile"
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rm "$dir/$outfile"
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sv u /var/service/fw
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exit
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fi
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# Bound: we've got the lease
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# Process params
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env >"$service.out"
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./convert2ipconf "$service.out" "$outfile"
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# Reconfigure routing and firewall if needed
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diff --brief "$outfile" "$dir/$outfile" >/dev/null 2>&1
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if test "$?" != "0"; then
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echo "Reconfiguring"
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mkdir -p "$dir" 2>/dev/null
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cp "$outfile" "$dir/$outfile"
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sv u /var/service/fw
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fi
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