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tls.go
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tls.go
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// Copyright 2023 Jigsaw Operations LLC
//
// 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
//
// https://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 config
import (
"fmt"
"net/url"
"strings"
"github.com/Jigsaw-Code/outline-sdk/transport"
"github.com/Jigsaw-Code/outline-sdk/transport/tls"
)
func parseOptions(configURL *url.URL) ([]tls.ClientOption, error) {
query := configURL.Opaque
values, err := url.ParseQuery(query)
if err != nil {
return nil, err
}
options := []tls.ClientOption{}
for key, values := range values {
switch strings.ToLower(key) {
case "sni":
if len(values) != 1 {
return nil, fmt.Errorf("sni option must has one value, found %v", len(values))
}
options = append(options, tls.WithSNI(values[0]))
case "certname":
if len(values) != 1 {
return nil, fmt.Errorf("certName option must has one value, found %v", len(values))
}
options = append(options, tls.WithCertificateName(values[0]))
default:
return nil, fmt.Errorf("unsupported option %v", key)
}
}
return options, nil
}
func wrapStreamDialerWithTLS(innerSD func() (transport.StreamDialer, error), _ func() (transport.PacketDialer, error), configURL *url.URL) (transport.StreamDialer, error) {
sd, err := innerSD()
if err != nil {
return nil, err
}
options, err := parseOptions(configURL)
if err != nil {
return nil, err
}
return tls.NewStreamDialer(sd, options...)
}