Add project

lib/netchecks/netchecks.go

@@ -0,0 +1,25 @@
+package netchecks
+
+import (
+	"fmt"
+	"net"
+	"reflect"
+)
+
+func IPNetIndexByIP(list []net.IPNet, ip net.IP) (int, error) {
+	for index, ipNetEntry := range list {
+		if ipNetEntry.Contains(ip) {
+			return index, nil
+		}
+	}
+	return -1, fmt.Errorf("ip not in ipNet-list")
+}
+
+func IPNetIndexByIPNet(list []net.IPNet, ipNet net.IPNet) (int, error) {
+	for index, ipNetEntry := range list {
+		if reflect.DeepEqual(ipNetEntry, ipNet) {
+			return index, nil
+		}
+	}
+	return -1, fmt.Errorf("ipNet not in ipNet-list")
+}