Add tls util
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// Copyright 2019 Sorint.lab
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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 util
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import (
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"io/ioutil"
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)
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func NewTLSConfig(certFile, keyFile, caFile string, insecureSkipVerify bool) (*tls.Config, error) {
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tlsConfig := tls.Config{}
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// Populate root CA certs
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if caFile != "" {
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pemBytes, err := ioutil.ReadFile(caFile)
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if err != nil {
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return nil, err
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}
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roots := x509.NewCertPool()
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for {
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var block *pem.Block
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block, pemBytes = pem.Decode(pemBytes)
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if block == nil {
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break
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}
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cert, err := x509.ParseCertificate(block.Bytes)
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if err != nil {
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return nil, err
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}
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roots.AddCert(cert)
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}
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tlsConfig.RootCAs = roots
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}
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// Populate keypair
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// both must be defined
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if certFile != "" && keyFile != "" {
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cert, err := tls.LoadX509KeyPair(certFile, keyFile)
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if err != nil {
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return nil, err
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}
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tlsConfig.Certificates = []tls.Certificate{cert}
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}
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tlsConfig.InsecureSkipVerify = insecureSkipVerify
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return &tlsConfig, nil
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}
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