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81 lines
2.6 KiB
81 lines
2.6 KiB
// Copyright 2016 fatedier, fatedier@gmail.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package vhost
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import (
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"crypto/tls"
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"io"
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"net"
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"time"
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gnet "github.com/fatedier/golib/net"
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)
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type HTTPSMuxer struct {
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*Muxer
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}
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func NewHTTPSMuxer(listener net.Listener, timeout time.Duration) (*HTTPSMuxer, error) {
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mux, err := NewMuxer(listener, GetHTTPSHostname, nil, nil, nil, timeout)
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return &HTTPSMuxer{mux}, err
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}
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func GetHTTPSHostname(c net.Conn) (_ net.Conn, _ map[string]string, err error) {
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reqInfoMap := make(map[string]string, 0)
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sc, rd := gnet.NewSharedConn(c)
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clientHello, err := readClientHello(rd)
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if err != nil {
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return nil, reqInfoMap, err
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}
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reqInfoMap["Host"] = clientHello.ServerName
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reqInfoMap["Scheme"] = "https"
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return sc, reqInfoMap, nil
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}
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func readClientHello(reader io.Reader) (*tls.ClientHelloInfo, error) {
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var hello *tls.ClientHelloInfo
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// Note that Handshake always fails because the readOnlyConn is not a real connection.
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// As long as the Client Hello is successfully read, the failure should only happen after GetConfigForClient is called,
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// so we only care about the error if hello was never set.
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err := tls.Server(readOnlyConn{reader: reader}, &tls.Config{
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GetConfigForClient: func(argHello *tls.ClientHelloInfo) (*tls.Config, error) {
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hello = &tls.ClientHelloInfo{}
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*hello = *argHello
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return nil, nil
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},
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}).Handshake()
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if hello == nil {
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return nil, err
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}
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return hello, nil
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}
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type readOnlyConn struct {
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reader io.Reader
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}
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func (conn readOnlyConn) Read(p []byte) (int, error) { return conn.reader.Read(p) }
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func (conn readOnlyConn) Write(p []byte) (int, error) { return 0, io.ErrClosedPipe }
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func (conn readOnlyConn) Close() error { return nil }
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func (conn readOnlyConn) LocalAddr() net.Addr { return nil }
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func (conn readOnlyConn) RemoteAddr() net.Addr { return nil }
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func (conn readOnlyConn) SetDeadline(t time.Time) error { return nil }
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func (conn readOnlyConn) SetReadDeadline(t time.Time) error { return nil }
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func (conn readOnlyConn) SetWriteDeadline(t time.Time) error { return nil }
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