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authorFelix Fietkau <nbd@openwrt.org>2009-06-13 14:42:47 +0000
committerFelix Fietkau <nbd@openwrt.org>2009-06-13 14:42:47 +0000
commitd196e4087eb6ded3fb230648e997888171992796 (patch)
tree255967f60a8ca9ed61a431896cea3ef89ef11c5d /package/base-files/files/usr
parentc90052be54e523117c99ae8a4a59b63f37fda293 (diff)
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udhcpc: add cidr routes support (patch from #5299)
SVN-Revision: 16433
Diffstat (limited to 'package/base-files/files/usr')
-rwxr-xr-xpackage/base-files/files/usr/share/udhcpc/default.script74
1 files changed, 74 insertions, 0 deletions
diff --git a/package/base-files/files/usr/share/udhcpc/default.script b/package/base-files/files/usr/share/udhcpc/default.script
index f629c74..08b59d0 100755
--- a/package/base-files/files/usr/share/udhcpc/default.script
+++ b/package/base-files/files/usr/share/udhcpc/default.script
@@ -62,6 +62,80 @@ setup_interface () {
change_state network "$ifc" gateway "$router"
}
+ # CIDR STATIC ROUTES (rfc3442)
+ [ -n "$cidrroute" ] && {
+ # This defines how many CIDR Routes can be assigned so that we do not enter
+ # an endless loop on malformed data
+ MAXCIDRROUTES=24;
+ while [ ${MAXCIDRROUTES} -gt "0" ]; do
+ # Format is
+ # $MASK $NW $GW
+ # $NW == AAA.BBB.CCC.DDD
+ # $GW == EEE.FFF.CCC.DDD
+ # $MASK AAA.[BBB].[CCC].[DDD] EEE.FFF.GGG.HHH
+ # 1 2 3 4 5 6 7 8 9
+ MASK=$(echo $cidrroute | awk '{ print $1 }')
+ if [ ${MASK} = "0" ] ; then
+ # $MASK EEE.FFF.GGG.HHH
+ # 1 2 3 5 6
+ NW="0"
+ GW=$(echo $cidrroute | awk '{ print $2"."$3"."$4"."$5 }' )
+ elif [ ${MASK} -le "8" ] ; then
+ # $MASK AAA EEE.FFF.GGG.HHH
+ # 1 2 3 5 6 7
+ NW=$(echo $cidrroute | awk '{ print $2 }' )
+ GW=$(echo $cidrroute | awk '{ print $3"."$4"."$5"."$6 }' )
+ elif [ ${MASK} -le "16" ] ; then
+ # $MASK AAA.BBB EEE.FFF.GGG.HHH
+ # 1 2 3 5 6 7 8
+ NW=$(echo $cidrroute | awk '{ print $2"."$3 }' )
+ GW=$(echo $cidrroute | awk '{ print $4"."$5"."$6"."$7 }' )
+ elif [ ${MASK} -le "24" ] ; then
+ # $MASK AAA.BBB.CCC EEE.FFF.GGG.HHH
+ # 1 2 3 4 5 6 7 8
+ NW=$(echo $cidrroute | awk '{ print $2"."$3"."$4 }' )
+ GW=$(echo $cidrroute | awk '{ print $5"."$6"."$7"."$8 }' )
+
+ else
+ # $MASK AAA.BBB.CCC.DDD EEE.FFF.GGG.HHH
+ # 1 2 3 4 5 6 7 8 9
+ NW=$(echo $cidrroute | awk '{ print $2"."$3"."$4"."$5 }' )
+ GW=$(echo $cidrroute | awk '{ print $6"."$7"."$8"."$9 }' )
+ fi
+ echo [$ROUTECOUNTER] Route Network: $NW/$MASK Gateway: $GW on $interface
+
+ # TODO: Check for malformed data here to eliminate counter workaround
+ # Malformed data is: ... or xxx... or xxx.yyy.. or xxx.yyy.zzz.
+
+ [ -n "$NW" ] && [ -n "$GW" ] && {
+ route add $NW gw $GW dev $interface
+ }
+
+ # Clear the strings incase they don't get set next time around
+ if [ ${NW} = "0" ]; then
+ NW=""
+ fi
+ TMP="$MASK $NW $GW "
+ NW=""
+ GW=""
+
+ # Remove the '.' so that we can delete them from the input with sed
+ TMP=$(echo $TMP | sed "s/\./ /g")
+
+ # Remove the previous entry from cidrroute
+ cidrroute=$(echo $cidrroute | sed "s/$TMP//g")
+
+ # Add to counter
+ let ROUTECOUNTER=$ROUTECOUNTER+1;
+ let MAXCIDRROUTES=$MAXCIDRROUTES-1;
+
+ # Leave the loop if cidrroutes is empty (we've parsed everything)
+ [ ! -n "$cidrroute" ] && break
+
+ done
+
+ echo "done."
+ }
# DNS
config_get old_dns "$ifc" dns