fix: Fix connection interface binding, JSON lease DB

pkg/types/json.go

@@ -0,0 +1,46 @@
+package types
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+
+	util "github.com/adrianokf/go-dhcp/pkg/util"
+)
+
+func (txid *TxId) UnmarshalText(text []byte) (err error) {
+	result, err := strconv.ParseUint(string(text), 16, 32)
+	if err != nil {
+		return err
+	}
+
+	copy(txid[:], util.U32ToByte(uint32(result)))
+	return nil
+}
+
+func (id TxId) MarshalText() ([]byte, error) {
+	return []byte(fmt.Sprintf("%x", id)), nil
+}
+
+func (addr *Ipv4Addr) UnmarshalText(text []byte) (err error) {
+	ip := net.ParseIP(string(text))
+	fmt.Println(ip)
+	if ip == nil {
+		return fmt.Errorf("could not parse IP address: '%s'", text)
+	}
+	*addr = Ipv4AddrFromNetIP(ip)
+	return nil
+}
+
+func (addr Ipv4Addr) MarshalText() ([]byte, error) {
+	return addr.ToNetIPv4().MarshalText()
+}
+
+func (addr HwAddr) MarshalText() ([]byte, error) {
+	return []byte(addr.String()), nil
+}
+
+func (addr *HwAddr) UnmarshalText(text []byte) (err error) {
+	*addr, err = HwAddrFromString(string(text))
+	return err
+}