🐶 Sync 2025-11-02 14:26:26

luci-app-passwall/root/usr/share/passwall/lease2hosts.sh

@@ -0,0 +1,53 @@
+#!/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