add all files from Hong

plugins/range/static_ip.go

@@ -0,0 +1,50 @@
+package rangeplugin
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+	"os"
+)
+
+const staticIpFile string = "./static_ip.csv"
+
+var staticIpPool map[string]string // mac as key
+var macPool map[string]string // ip as key
+
+func importStaticIpFile() {
+	fs, err := os.Open(staticIpFile)
+	if err != nil {
+		//fmt.Println(err)
+		return
+	}
+	defer fs.Close()
+
+	staticIpPool = make(map[string]string)
+	macPool = make(map[string]string)
+
+	r := csv.NewReader(fs)
+	for {
+		row, err := r.Read()
+		if err != nil && err != io.EOF {
+			fmt.Printf("Can not read, err is %+v", err)
+		}
+		if err == io.EOF {
+			break
+		}
+		//fmt.Println(row)
+		if len(row) > 1 {
+			staticIpPool[row[0]] = row[1]
+			macPool[row[1]] = row[0]
+		}
+	}
+}
+
+func GetStaticIp(mac string) string {
+	return staticIpPool[mac]
+}
+
+func IsStaticIp(ip string) bool {
+	_, ok := macPool[ip]
+	return ok
+}