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Tbl=/tmp/p2ptbl/update
TblIf=br-mesh
FwDir=/tmp/firmware
# updates global state using current internal state; implicit
# definition of the table format
GS_update () {
p2ptbl update $Tbl "$NodeId" "$CurFw\t$TargetFw\t$TargetTime\t$AckTime" $TblIf
}
# assemble internal state
CurState=$1
CurTime=$(date +%s)
NodeId=$(cat /proc/sys/kernel/random/boot_id) # TODO: replace with stable machine id
CurFw="$(cat /etc/firmware)"
[ -n "$NodeId" -a -n "$CurFw" ]
# get current global state from p2ptable
p2ptbl init $Tbl
GS=$(p2ptbl get $Tbl $NodeId)
if [ -n "$GS" ]; then
GSCurFw=$( echo "$GS" | cut -f1)
TargetFw=$( echo "$GS" | cut -f2)
TargetTime=$(echo "$GS" | cut -f3)
AckTime=$( echo "$GS" | cut -f4)
# update stale firmware entries .. should only happen after manual
# edit of /etc/firmware
[ "$CurFw" == "$GSCurFw" ] || GS_update
else
# no entry exists -> create one
TargetFw=""
TargetTime=""
AckTime=""
GS_update
fi
FwDst=$FwDir/$TargetFw
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