87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
package gost
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import (
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"context"
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"net"
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"net/url"
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"time"
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ss "github.com/shadowsocks/shadowsocks-go/shadowsocks"
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)
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// Due to in/out byte length is inconsistent of the shadowsocks.Conn.Write,
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// we wrap around it to make io.Copy happy
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type shadowConn struct {
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conn net.Conn
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}
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func ShadowConn(conn net.Conn) net.Conn {
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return &shadowConn{conn: conn}
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}
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func (c *shadowConn) Read(b []byte) (n int, err error) {
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return c.conn.Read(b)
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}
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func (c *shadowConn) Write(b []byte) (n int, err error) {
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n = len(b) // force byte length consistent
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_, err = c.conn.Write(b)
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return
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}
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func (c *shadowConn) Close() error {
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return c.conn.Close()
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}
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func (c *shadowConn) LocalAddr() net.Addr {
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return c.conn.LocalAddr()
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}
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func (c *shadowConn) RemoteAddr() net.Addr {
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return c.conn.RemoteAddr()
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}
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func (c *shadowConn) SetDeadline(t time.Time) error {
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return c.conn.SetDeadline(t)
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}
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func (c *shadowConn) SetReadDeadline(t time.Time) error {
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return c.conn.SetReadDeadline(t)
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}
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func (c *shadowConn) SetWriteDeadline(t time.Time) error {
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return c.conn.SetWriteDeadline(t)
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}
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type shadowConnector struct {
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Cipher *url.Userinfo
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}
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func ShadowConnector(cipher *url.Userinfo) Connector {
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return &shadowConnector{Cipher: cipher}
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}
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func (c *shadowConnector) Connect(ctx context.Context, conn net.Conn, addr string) (net.Conn, error) {
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rawaddr, err := ss.RawAddr(addr)
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if err != nil {
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return nil, err
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}
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var method, password string
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if c.Cipher != nil {
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method = c.Cipher.Username()
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password, _ = c.Cipher.Password()
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}
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cipher, err := ss.NewCipher(method, password)
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if err != nil {
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return nil, err
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}
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sc, err := ss.DialWithRawAddrConn(rawaddr, conn, cipher)
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if err != nil {
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return nil, err
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}
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return &shadowConn{conn: sc}, nil
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}
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