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types.go
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/
types.go
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package option
import (
"net/http"
"net/netip"
"strings"
"time"
"github.com/sagernet/sing-box/common/json"
"github.com/sagernet/sing-dns"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
N "github.com/sagernet/sing/common/network"
mDNS "github.com/miekg/dns"
)
type ListenAddress netip.Addr
func NewListenAddress(addr netip.Addr) *ListenAddress {
address := ListenAddress(addr)
return &address
}
func (a ListenAddress) MarshalJSON() ([]byte, error) {
addr := netip.Addr(a)
if !addr.IsValid() {
return nil, nil
}
return json.Marshal(addr.String())
}
func (a *ListenAddress) UnmarshalJSON(content []byte) error {
var value string
err := json.Unmarshal(content, &value)
if err != nil {
return err
}
addr, err := netip.ParseAddr(value)
if err != nil {
return err
}
*a = ListenAddress(addr)
return nil
}
func (a *ListenAddress) Build() netip.Addr {
if a == nil {
return netip.AddrFrom4([4]byte{127, 0, 0, 1})
}
return (netip.Addr)(*a)
}
type NetworkList string
func (v *NetworkList) UnmarshalJSON(content []byte) error {
var networkList []string
err := json.Unmarshal(content, &networkList)
if err != nil {
var networkItem string
err = json.Unmarshal(content, &networkItem)
if err != nil {
return err
}
networkList = []string{networkItem}
}
for _, networkName := range networkList {
switch networkName {
case N.NetworkTCP, N.NetworkUDP:
break
default:
return E.New("unknown network: " + networkName)
}
}
*v = NetworkList(strings.Join(networkList, "\n"))
return nil
}
func (v NetworkList) Build() []string {
if v == "" {
return []string{N.NetworkTCP, N.NetworkUDP}
}
return strings.Split(string(v), "\n")
}
type Listable[T comparable] []T
func (l Listable[T]) MarshalJSON() ([]byte, error) {
arrayList := []T(l)
if len(arrayList) == 1 {
return json.Marshal(arrayList[0])
}
return json.Marshal(arrayList)
}
func (l *Listable[T]) UnmarshalJSON(content []byte) error {
err := json.Unmarshal(content, (*[]T)(l))
if err == nil {
return nil
}
var singleItem T
newError := json.Unmarshal(content, &singleItem)
if newError != nil {
return E.Errors(err, newError)
}
*l = []T{singleItem}
return nil
}
type DomainStrategy dns.DomainStrategy
func (s DomainStrategy) MarshalJSON() ([]byte, error) {
var value string
switch dns.DomainStrategy(s) {
case dns.DomainStrategyAsIS:
value = ""
// value = "AsIS"
case dns.DomainStrategyPreferIPv4:
value = "prefer_ipv4"
case dns.DomainStrategyPreferIPv6:
value = "prefer_ipv6"
case dns.DomainStrategyUseIPv4:
value = "ipv4_only"
case dns.DomainStrategyUseIPv6:
value = "ipv6_only"
default:
return nil, E.New("unknown domain strategy: ", s)
}
return json.Marshal(value)
}
func (s *DomainStrategy) UnmarshalJSON(bytes []byte) error {
var value string
err := json.Unmarshal(bytes, &value)
if err != nil {
return err
}
switch value {
case "", "as_is":
*s = DomainStrategy(dns.DomainStrategyAsIS)
case "prefer_ipv4":
*s = DomainStrategy(dns.DomainStrategyPreferIPv4)
case "prefer_ipv6":
*s = DomainStrategy(dns.DomainStrategyPreferIPv6)
case "ipv4_only":
*s = DomainStrategy(dns.DomainStrategyUseIPv4)
case "ipv6_only":
*s = DomainStrategy(dns.DomainStrategyUseIPv6)
default:
return E.New("unknown domain strategy: ", value)
}
return nil
}
type Duration time.Duration
func (d Duration) MarshalJSON() ([]byte, error) {
return json.Marshal((time.Duration)(d).String())
}
func (d *Duration) UnmarshalJSON(bytes []byte) error {
var value string
err := json.Unmarshal(bytes, &value)
if err != nil {
return err
}
duration, err := time.ParseDuration(value)
if err != nil {
return err
}
*d = Duration(duration)
return nil
}
type DNSQueryType uint16
func (t DNSQueryType) MarshalJSON() ([]byte, error) {
typeName, loaded := mDNS.TypeToString[uint16(t)]
if loaded {
return json.Marshal(typeName)
}
return json.Marshal(uint16(t))
}
func (t *DNSQueryType) UnmarshalJSON(bytes []byte) error {
var valueNumber uint16
err := json.Unmarshal(bytes, &valueNumber)
if err == nil {
*t = DNSQueryType(valueNumber)
return nil
}
var valueString string
err = json.Unmarshal(bytes, &valueString)
if err == nil {
queryType, loaded := mDNS.StringToType[valueString]
if loaded {
*t = DNSQueryType(queryType)
return nil
}
}
return E.New("unknown DNS query type: ", string(bytes))
}
func DNSQueryTypeToString(queryType uint16) string {
typeName, loaded := mDNS.TypeToString[queryType]
if loaded {
return typeName
}
return F.ToString(queryType)
}
type HTTPHeader map[string]Listable[string]
func (h HTTPHeader) Build() http.Header {
header := make(http.Header)
for name, values := range h {
for _, value := range values {
header.Add(name, value)
}
}
return header
}