126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
package adapters
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import (
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"fmt"
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"net"
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"strconv"
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"strings"
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"github.com/Dreamacro/clash/component/vmess"
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C "github.com/Dreamacro/clash/constant"
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)
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type Vmess struct {
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*Base
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server string
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client *vmess.Client
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}
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type VmessOption struct {
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Name string `proxy:"name"`
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Server string `proxy:"server"`
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Port int `proxy:"port"`
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UUID string `proxy:"uuid"`
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AlterID int `proxy:"alterId"`
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Cipher string `proxy:"cipher"`
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TLS bool `proxy:"tls,omitempty"`
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UDP bool `proxy:"udp,omitempty"`
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Network string `proxy:"network,omitempty"`
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WSPath string `proxy:"ws-path,omitempty"`
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WSHeaders map[string]string `proxy:"ws-headers,omitempty"`
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SkipCertVerify bool `proxy:"skip-cert-verify,omitempty"`
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}
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func (v *Vmess) Dial(metadata *C.Metadata) (C.Conn, error) {
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c, err := dialTimeout("tcp", v.server, tcpTimeout)
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if err != nil {
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return nil, fmt.Errorf("%s connect error", v.server)
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}
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tcpKeepAlive(c)
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c, err = v.client.New(c, parseVmessAddr(metadata))
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return newConn(c, v), err
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}
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func (v *Vmess) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
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c, err := dialTimeout("tcp", v.server, tcpTimeout)
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if err != nil {
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return nil, nil, fmt.Errorf("%s connect error", v.server)
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}
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tcpKeepAlive(c)
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c, err = v.client.New(c, parseVmessAddr(metadata))
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if err != nil {
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return nil, nil, fmt.Errorf("new vmess client error: %v", err)
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}
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return newPacketConn(&vmessUDPConn{Conn: c}, v), c.RemoteAddr(), nil
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}
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func NewVmess(option VmessOption) (*Vmess, error) {
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security := strings.ToLower(option.Cipher)
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client, err := vmess.NewClient(vmess.Config{
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UUID: option.UUID,
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AlterID: uint16(option.AlterID),
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Security: security,
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TLS: option.TLS,
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HostName: option.Server,
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Port: strconv.Itoa(option.Port),
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NetWork: option.Network,
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WebSocketPath: option.WSPath,
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WebSocketHeaders: option.WSHeaders,
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SkipCertVerify: option.SkipCertVerify,
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SessionCache: getClientSessionCache(),
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})
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if err != nil {
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return nil, err
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}
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return &Vmess{
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Base: &Base{
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name: option.Name,
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tp: C.Vmess,
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udp: true,
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},
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server: net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
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client: client,
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}, nil
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}
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func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {
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var addrType byte
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var addr []byte
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switch metadata.AddrType {
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case C.AtypIPv4:
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addrType = byte(vmess.AtypIPv4)
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addr = make([]byte, net.IPv4len)
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copy(addr[:], metadata.DstIP.To4())
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case C.AtypIPv6:
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addrType = byte(vmess.AtypIPv6)
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addr = make([]byte, net.IPv6len)
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copy(addr[:], metadata.DstIP.To16())
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case C.AtypDomainName:
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addrType = byte(vmess.AtypDomainName)
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addr = make([]byte, len(metadata.Host)+1)
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addr[0] = byte(len(metadata.Host))
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copy(addr[1:], []byte(metadata.Host))
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}
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port, _ := strconv.Atoi(metadata.DstPort)
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return &vmess.DstAddr{
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UDP: metadata.NetWork == C.UDP,
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AddrType: addrType,
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Addr: addr,
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Port: uint(port),
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}
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}
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type vmessUDPConn struct {
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net.Conn
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}
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func (uc *vmessUDPConn) WriteTo(b []byte, addr net.Addr) (int, error) {
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return uc.Conn.Write(b)
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}
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func (uc *vmessUDPConn) ReadFrom(b []byte) (int, net.Addr, error) {
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n, err := uc.Conn.Read(b)
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return n, uc.RemoteAddr(), err
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}
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