mirror of
https://github.com/square/certigo.git
synced 2026-10-20 08:19:01 +00:00
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// Copyright 2025 Block, Inc.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package starttls
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"net"
|
|
"net/url"
|
|
"time"
|
|
|
|
"github.com/mwitkow/go-http-dialer"
|
|
)
|
|
|
|
type timeoutError struct{}
|
|
|
|
func (timeoutError) Error() string { return "tls: DialWithDialer timed out" }
|
|
func (timeoutError) Timeout() bool { return true }
|
|
func (timeoutError) Temporary() bool { return true }
|
|
|
|
// Dialer is an interface for dialers (either net.Dialer, or http_dialer.HttpTunnel)
|
|
type Dialer interface {
|
|
Dial(network, address string) (net.Conn, error)
|
|
}
|
|
|
|
// Internal copy of tls.DialWithDialer, adapter so it can work with HTTP CONNECT dialers.
|
|
// See: https://golang.org/pkg/crypto/tls/#DialWithDialer
|
|
func dialWithDialer(dialer Dialer, timeout time.Duration, network, addr string, config *tls.Config) (*tls.Conn, error) {
|
|
var errChannel chan error
|
|
if timeout != 0 {
|
|
errChannel = make(chan error, 2)
|
|
time.AfterFunc(timeout, func() {
|
|
errChannel <- timeoutError{}
|
|
})
|
|
}
|
|
|
|
rawConn, err := dialer.Dial(network, addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
conn := tls.Client(rawConn, config)
|
|
if timeout == 0 {
|
|
err = conn.Handshake()
|
|
} else {
|
|
go func() {
|
|
errChannel <- conn.Handshake()
|
|
}()
|
|
|
|
err = <-errChannel
|
|
}
|
|
|
|
if err != nil {
|
|
_ = rawConn.Close()
|
|
return nil, err
|
|
}
|
|
|
|
return conn, nil
|
|
}
|
|
|
|
func wrapDialerWithProxy(dialer Dialer, connectProxy *url.URL, tlsConfig *tls.Config) (Dialer, error) {
|
|
dialerOpt := http_dialer.WithDialer(dialer.(*net.Dialer))
|
|
tlsOpt := http_dialer.WithTls(tlsConfig)
|
|
if connectProxy.User != nil {
|
|
password, ok := connectProxy.User.Password()
|
|
if !ok {
|
|
return nil, fmt.Errorf("proxy username without password not currently supported")
|
|
}
|
|
auth := http_dialer.WithProxyAuth(http_dialer.AuthBasic(connectProxy.User.Username(), password))
|
|
dialer = http_dialer.New(connectProxy, dialerOpt, tlsOpt, auth)
|
|
} else {
|
|
dialer = http_dialer.New(connectProxy, dialerOpt, tlsOpt)
|
|
}
|
|
return dialer, nil
|
|
}
|