[git commit master] tweak dhcp service example - add ntp configuration
Denys Vlasenko
vda.linux at googlemail.com
Mon Nov 9 08:39:50 UTC 2009
commit: http://git.busybox.net/busybox/commit/?id=391dd92ce218dea9a015e6b06f95403772876ac9
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
examples/var_service/dhcp_if/convert2ipconf | 22 ++------
examples/var_service/dhcp_if/convert2ntpconf | 34 +++++++++++
examples/var_service/dhcp_if/dhcp_handler | 81 ++++++++++++++-----------
3 files changed, 84 insertions(+), 53 deletions(-)
create mode 100755 examples/var_service/dhcp_if/convert2ntpconf
diff --git a/examples/var_service/dhcp_if/convert2ipconf b/examples/var_service/dhcp_if/convert2ipconf
index cee0854..114ab05 100755
--- a/examples/var_service/dhcp_if/convert2ipconf
+++ b/examples/var_service/dhcp_if/convert2ipconf
@@ -19,24 +19,12 @@
#let cfg=cfg+1
#if[$cfg]=...; ip[$cfg]=...; ipmask[$cfg]=.../...; gw[$cfg]=...; net[$cfg]=... dns[$cfg]=...
-exec >"$0.out" 2>&1
+exec >/dev/null
+#exec >"$0.out" # debug
+exec 2>&1
test "$interface" || exit 1
-test -f "$1" || exit 1
-
-# Unsafe, and does not handle values with spaces:
-#. "./$1" || exit 1
-# Safe(r) parsing:
-sq="'"
-while read line; do
- #echo "line: $line"
- # Skip empty lines and lines with single quotes
- test "${line##*$sq*}" || continue
- var="${line%%=*}"
- val="${line#*=}"
- #echo "var:$var val:'$val'"
- eval "$var='$val'"
-done <"$1"
+test "$ip" || exit 1
{
echo "let cfg=cfg+1"
@@ -50,4 +38,4 @@ test "$dns" && echo "dns[\$cfg]='$dns'"
# which subnet(s) is/are available thru advertised router
# Assume 0/0
echo "net[\$cfg]='0/0'"
-} >"$2"
+} >"$1"
diff --git a/examples/var_service/dhcp_if/convert2ntpconf b/examples/var_service/dhcp_if/convert2ntpconf
new file mode 100755
index 0000000..debf1eb
--- /dev/null
+++ b/examples/var_service/dhcp_if/convert2ntpconf
@@ -0,0 +1,34 @@
+#!/bin/sh
+# convert:
+
+# dhcptype=5
+# serverid=172.16.42.102
+# lease=97200
+# interface=eth0
+# ip=172.16.42.177
+# subnet=255.255.255.0
+# mask=24
+# broadcast=172.16.22.255
+# router=172.16.42.98
+# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
+# domain=lab.example.com example.com
+# ntpsrv=10.34.32.125 10.34.255.7
+
+# into:
+
+#let cfg=cfg+1
+#ntpip[$cfg]=...
+
+exec >/dev/null
+#exec >"$0.out" # debug
+exec 2>&1
+
+test "$interface" || exit 1
+test "$ip" || exit 1
+
+{
+for n in $ntpsrv; do
+ echo "let cfg=cfg+1"
+ echo "ntpip[\$cfg]='$n'";
+done
+} >"$1"
diff --git a/examples/var_service/dhcp_if/dhcp_handler b/examples/var_service/dhcp_if/dhcp_handler
index 9ed3e7a..a119b4d 100755
--- a/examples/var_service/dhcp_if/dhcp_handler
+++ b/examples/var_service/dhcp_if/dhcp_handler
@@ -3,56 +3,54 @@
# parameters: $1 and environment
#
# $1 is:
-#
# deconfig: This argument is used when udhcpc starts, and
-# when a lease is lost. The script should put the interface in an
+# when a leases is lost. The script should put the interface in an
# up, but deconfigured state, ie: ifconfig $interface 0.0.0.0.
-# Environment: interface=ethN
#
# bound: This argument is used when udhcpc moves from an
# unbound, to a bound state. All of the paramaters are set in
# enviromental variables, The script should configure the interface,
-# and set any other relavent parameters (default gateway, dns server, etc).
-# Environment:
-# 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
+# and set any other relavent parameters (default gateway, dns server,
+# etc).
#
# renew: This argument is used when a DHCP lease is renewed. All of
# the paramaters are set in enviromental variables. This argument is
# used when the interface is already configured, so the IP address,
# will not change, however, the other DHCP paramaters, such as the
# default gateway, subnet mask, and dns server may change.
-# Environment: same as for "bound".
#
# nak: This argument is used with udhcpc receives a NAK message.
# The script with the deconfig argument will be called directly
# afterwards, so no changes to the network interface are neccessary.
# This hook is provided for purely informational purposes (the
# message option may contain a reason for the NAK).
-# Environment: interface=ethN, serverid=IP_ADDR
#
-# leasefail: called when lease cannot be obtained
-# (for example, when DHCP server is down).
-# Environment: interface=ethN
+# env shows something like:
+# 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
# TODO: put domain into /etc/resolv.conf (thru /var/service/fw)
# TODO: feed ntp IPs to /var/service/ntp
-service=`basename $PWD`
-outfile="$service.ipconf"
-dir="/var/run/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 >>"$0.out" 2>&1
+exec >/dev/null
+#exec >>"$0.out" #debug
+exec 2>&1
echo "`date`: Params: $*"
@@ -60,23 +58,34 @@ if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
# Reconfigure network with this interface disabled
echo "Deconfiguring"
rm "$service.out"
- rm "$outfile"
- rm "$dir/$outfile"
+ rm "$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
-# Process params
-env >"$service.out"
-./convert2ipconf "$service.out" "$outfile"
-
+./convert2ipconf "$file_ipconf"
# Reconfigure routing and firewall if needed
-diff --brief "$outfile" "$dir/$outfile" >/dev/null 2>&1
+diff --brief "$file_ipconf" "$dir_ipconf/$file_ipconf" >/dev/null 2>&1
if test "$?" != "0"; then
- echo "Reconfiguring"
- mkdir -p "$dir" 2>/dev/null
- cp "$outfile" "$dir/$outfile"
+ echo "Reconfiguring fw"
+ mkdir -p "$dir_ipconf" 2>/dev/null
+ cp "$file_ipconf" "$dir_ipconf/$file_ipconf"
sv u /var/service/fw
fi
+
+./convert2ntpconf "$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
--
1.6.3.3
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