vendor: add d2g/dhcp4server

vendor/github.com/d2g/dhcp4server/leasepool/lease.go

@@ -0,0 +1,95 @@
+package leasepool
+
+import (
+	"encoding/json"
+	"net"
+	"time"
+)
+
+type LeaseStatus int
+
+const (
+	Free     LeaseStatus = 0
+	Reserved LeaseStatus = 1
+	Active   LeaseStatus = 2
+)
+
+type Lease struct {
+	IP         net.IP           //The IP of the Lease
+	Status     LeaseStatus      //Are Reserved, Active or Free
+	MACAddress net.HardwareAddr //Mac Address of the Device
+	Hostname   string           //Hostname From option 12
+	Expiry     time.Time        //Expiry Time
+}
+
+func (this Lease) MarshalJSON() ([]byte, error) {
+	stringMarshal := struct {
+		IP         string
+		Status     int
+		MACAddress string
+		Hostname   string
+		Expiry     time.Time
+	}{
+		(this.IP.String()),
+		int(this.Status),
+		(this.MACAddress.String()),
+		this.Hostname,
+		this.Expiry,
+	}
+
+	return json.Marshal(stringMarshal)
+}
+
+func (this *Lease) UnmarshalJSON(data []byte) error {
+	stringUnMarshal := struct {
+		IP         string
+		Status     int
+		MACAddress string
+		Hostname   string
+		Expiry     time.Time
+	}{}
+
+	err := json.Unmarshal(data, &stringUnMarshal)
+	if err != nil {
+		return err
+	}
+
+	this.IP = net.ParseIP(stringUnMarshal.IP)
+	this.Status = LeaseStatus(stringUnMarshal.Status)
+	if stringUnMarshal.MACAddress != "" {
+		this.MACAddress, err = net.ParseMAC(stringUnMarshal.MACAddress)
+	}
+
+	if err != nil {
+		return err
+	}
+
+	this.Hostname = stringUnMarshal.Hostname
+	this.Expiry = stringUnMarshal.Expiry
+
+	return nil
+}
+
+func (this Lease) Equal(other Lease) bool {
+	if !this.IP.Equal(other.IP) {
+		return false
+	}
+
+	if int(this.Status) != int(other.Status) {
+		return false
+	}
+
+	if this.MACAddress.String() != other.MACAddress.String() {
+		return false
+	}
+
+	if this.Hostname != other.Hostname {
+		return false
+	}
+
+	if !this.Expiry.Equal(other.Expiry) {
+		return false
+	}
+
+	return true
+}