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eg. IN-TYPE,SOCKS/REDIR/INNER,Proxy support list: HTTP HTTPS SOCKS SOCKS4 SOCKS5 REDIR TPROXY TUN INNER
185 lines
3.4 KiB
Go
185 lines
3.4 KiB
Go
package constant
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import (
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"encoding/json"
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"fmt"
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"net"
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"net/netip"
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"strconv"
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)
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// Socks addr type
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const (
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AtypIPv4 = 1
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AtypDomainName = 3
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AtypIPv6 = 4
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TCP NetWork = iota
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UDP
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ALLNet
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HTTP Type = iota
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HTTPS
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SOCKS4
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SOCKS5
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REDIR
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TPROXY
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TUN
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INNER
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)
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type NetWork int
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func (n NetWork) String() string {
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if n == TCP {
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return "tcp"
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} else if n == UDP {
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return "udp"
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}
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return "all"
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}
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func (n NetWork) MarshalJSON() ([]byte, error) {
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return json.Marshal(n.String())
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}
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type Type int
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func (t Type) String() string {
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switch t {
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case HTTP:
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return "HTTP"
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case HTTPS:
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return "HTTPS"
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case SOCKS4:
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return "Socks4"
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case SOCKS5:
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return "Socks5"
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case REDIR:
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return "Redir"
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case TPROXY:
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return "TProxy"
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case TUN:
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return "Tun"
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case INNER:
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return "Inner"
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default:
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return "Unknown"
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}
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}
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func ParseType(t string) (*Type, error) {
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var res Type
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switch t {
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case "HTTP":
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res = HTTP
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case "HTTPS":
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res = HTTPS
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case "SOCKS4":
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res = SOCKS4
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case "SOCKS5":
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res = SOCKS5
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case "REDIR":
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res = REDIR
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case "TPROXY":
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res = TPROXY
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case "TUN":
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res = TUN
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case "INNER":
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res = INNER
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default:
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return nil, fmt.Errorf("unknown type: %s", t)
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}
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return &res, nil
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}
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func (t Type) MarshalJSON() ([]byte, error) {
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return json.Marshal(t.String())
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}
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// Metadata is used to store connection address
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type Metadata struct {
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NetWork NetWork `json:"network"`
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Type Type `json:"type"`
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SrcIP netip.Addr `json:"sourceIP"`
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DstIP netip.Addr `json:"destinationIP"`
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SrcPort string `json:"sourcePort"`
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DstPort string `json:"destinationPort"`
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AddrType int `json:"-"`
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Host string `json:"host"`
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DNSMode DNSMode `json:"dnsMode"`
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Uid *int32 `json:"uid"`
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Process string `json:"process"`
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ProcessPath string `json:"processPath"`
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RemoteDst string `json:"remoteDestination"`
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}
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func (m *Metadata) RemoteAddress() string {
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return net.JoinHostPort(m.String(), m.DstPort)
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}
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func (m *Metadata) SourceAddress() string {
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return net.JoinHostPort(m.SrcIP.String(), m.SrcPort)
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}
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func (m *Metadata) SourceDetail() string {
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if m.Type == INNER {
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return fmt.Sprintf("[%s]", ClashName)
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}
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if m.Process != "" && m.Uid != nil {
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return fmt.Sprintf("%s(%s, uid=%d)", m.SourceAddress(), m.Process, *m.Uid)
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} else if m.Uid != nil {
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return fmt.Sprintf("%s(uid=%d)", m.SourceAddress(), *m.Uid)
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} else if m.Process != "" {
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return fmt.Sprintf("%s(%s)", m.SourceAddress(), m.Process)
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} else {
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return fmt.Sprintf("%s", m.SourceAddress())
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}
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}
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func (m *Metadata) Resolved() bool {
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return m.DstIP.IsValid()
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}
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// Pure is used to solve unexpected behavior
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// when dialing proxy connection in DNSMapping mode.
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func (m *Metadata) Pure() *Metadata {
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if m.DNSMode == DNSMapping && m.DstIP.IsValid() {
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copyM := *m
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copyM.Host = ""
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if copyM.DstIP.Is4() {
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copyM.AddrType = AtypIPv4
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} else {
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copyM.AddrType = AtypIPv6
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}
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return ©M
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}
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return m
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}
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func (m *Metadata) UDPAddr() *net.UDPAddr {
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if m.NetWork != UDP || !m.DstIP.IsValid() {
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return nil
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}
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port, _ := strconv.ParseUint(m.DstPort, 10, 16)
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return &net.UDPAddr{
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IP: m.DstIP.AsSlice(),
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Port: int(port),
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}
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}
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func (m *Metadata) String() string {
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if m.Host != "" {
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return m.Host
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} else if m.DstIP.IsValid() {
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return m.DstIP.String()
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} else {
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return "<nil>"
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}
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}
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func (m *Metadata) Valid() bool {
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return m.Host != "" || m.DstIP.IsValid()
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}
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