54 lines
1.1 KiB
Bash
Executable File
54 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# dhcp.leases to hosts
|
|
|
|
CONFIG=passwall
|
|
TMP_PATH=/tmp/etc/${CONFIG}
|
|
TMP_PATH2=/tmp/etc/${CONFIG}_tmp
|
|
LOCK_FILE=/tmp/lock/${CONFIG}_lease2hosts.lock
|
|
LEASE_FILE="/tmp/dhcp.leases"
|
|
HOSTS_FILE="$TMP_PATH2/dhcp-hosts"
|
|
TMP_FILE="/tmp/dhcp-hosts.tmp"
|
|
|
|
exec 99>"$LOCK_FILE"
|
|
flock -n 99
|
|
if [ "$?" != 0 ]; then
|
|
exit 0
|
|
fi
|
|
|
|
reload_dnsmasq_pids() {
|
|
local pidfile pid
|
|
find $TMP_PATH/acl -type f -name 'dnsmasq.pid' 2>/dev/null | while read pidfile; do
|
|
if [ -s "$pidfile" ]; then
|
|
read pid < "$pidfile"
|
|
if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
|
|
kill -HUP "$pid"
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
while true; do
|
|
|
|
if [ -f "$LEASE_FILE" ]; then
|
|
awk 'NF >= 4 && $4 != "*" {print $3" "$4}' "$LEASE_FILE" | sort > "$TMP_FILE"
|
|
if [ -s "$TMP_FILE" ]; then
|
|
if [ ! -f "$HOSTS_FILE" ] || ! cmp -s "$TMP_FILE" "$HOSTS_FILE"; then
|
|
mv "$TMP_FILE" "$HOSTS_FILE"
|
|
reload_dnsmasq_pids
|
|
else
|
|
rm -f "$TMP_FILE"
|
|
fi
|
|
else
|
|
if [ -s "$HOSTS_FILE" ]; then
|
|
: > "$HOSTS_FILE"
|
|
reload_dnsmasq_pids
|
|
fi
|
|
rm -f "$TMP_FILE"
|
|
fi
|
|
fi
|
|
|
|
sleep 60
|
|
|
|
done 2>/dev/null
|