95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
// Sshwifty - A Web SSH client
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//
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// Copyright (C) 2019-2020 Rui NI <nirui@gmx.com>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package network
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import (
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"context"
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"net"
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"time"
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"golang.org/x/net/proxy"
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)
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type socks5Dial struct {
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net.Dialer
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}
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func (s socks5Dial) Dial(
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network, address string) (net.Conn, error) {
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conn, dErr := s.Dialer.Dial(network, address)
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if dErr == nil {
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conn.SetReadDeadline(time.Now().Add(s.Dialer.Timeout))
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}
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return conn, dErr
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}
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func (s socks5Dial) DialContext(
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ctx context.Context, network, address string) (net.Conn, error) {
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conn, dErr := s.Dialer.DialContext(ctx, network, address)
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if dErr == nil {
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conn.SetReadDeadline(time.Now().Add(s.Dialer.Timeout))
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}
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return conn, dErr
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}
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// BuildSocks5Dial builds a Socks5 dialer
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func BuildSocks5Dial(
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socks5Address string, userName string, password string) (Dial, error) {
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var auth *proxy.Auth
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if len(userName) > 0 || len(password) > 0 {
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auth = &proxy.Auth{
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User: userName,
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Password: password,
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}
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}
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return func(
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network string,
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address string,
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timeout time.Duration,
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) (net.Conn, error) {
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dialCfg := socks5Dial{
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Dialer: net.Dialer{
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Timeout: timeout,
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Deadline: time.Now().Add(timeout),
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},
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}
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dial, dialErr := proxy.SOCKS5("tcp", socks5Address, auth, &dialCfg)
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if dialErr != nil {
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return nil, dialErr
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}
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dialConn, dialErr := dial.Dial(network, address)
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if dialErr != nil {
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return nil, dialErr
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}
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dialConn.SetReadDeadline(emptyTime)
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return dialConn, nil
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}, nil
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}
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