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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package osp
// TODO(jophba):
// - avoid NetworkIdleTimeout
// - make a client object that can send and receive more than one stream
// - make a server object that can send and receive more than one stream
import (
"context"
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"fmt"
"io"
"log"
"math/big"
quic "github.com/lucas-clemente/quic-go"
)
func GenerateTlsCert() (*tls.Certificate, error) {
key, err := rsa.GenerateKey(rand.Reader, 1024)
if err != nil {
return nil, err
}
template := x509.Certificate{SerialNumber: big.NewInt(1)}
certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &key.PublicKey, key)
if err != nil {
return nil, err
}
keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)})
certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
tlsCert, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
return nil, err
}
return &tlsCert, nil
}
func readAllStreams(ctx context.Context, session quic.Session, streams chan<- io.ReadWriteCloser) {
for !done(ctx) {
stream, err := session.AcceptStream()
if err != nil && !done(ctx) {
log.Println("Failed to accept stream with QUIC", err.Error())
}
streams <- stream
}
}
// Returns a quic.Session object with a .OpenStreamSync method to send streams
func DialAsQuicClient(ctx context.Context, hostname string, port int) (quic.Session, error) {
// TODO(jophba): Change InsecureSkipVerify
tlsConfig := &tls.Config{InsecureSkipVerify: true}
addr := fmt.Sprintf("%s:%d", hostname, port)
session, err := quic.DialAddrContext(ctx, addr, tlsConfig, nil)
return session, err
}
// Reads in streams
func RunQuicServer(ctx context.Context, port int, cert tls.Certificate, streams chan<- io.ReadWriteCloser) error {
addr := fmt.Sprintf(":%d", port)
tlsConfig := &tls.Config{Certificates: []tls.Certificate{cert}}
listener, err := quic.ListenAddr(addr, tlsConfig, nil)
if err != nil {
return err
}
go func() {
waitUntilDone(ctx)
listener.Close()
}()
for {
session, err := listener.Accept()
if err != nil && !done(ctx) {
log.Println("Failed to accept session with QUIC:", err.Error())
}
go readAllStreams(ctx, session, streams)
}
}
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