/
tls.go
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/
tls.go
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// Copyright The OpenTelemetry Authors
//
// 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 oconf // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/internal/oconf"
import (
"crypto/tls"
"crypto/x509"
"errors"
"os"
)
// ReadTLSConfigFromFile reads a PEM certificate file and creates
// a tls.Config that will use this certifate to verify a server certificate.
func ReadTLSConfigFromFile(path string) (*tls.Config, error) {
b, err := os.ReadFile(path)
if err != nil {
return nil, err
}
return CreateTLSConfig(b)
}
// CreateTLSConfig creates a tls.Config from a raw certificate bytes
// to verify a server certificate.
func CreateTLSConfig(certBytes []byte) (*tls.Config, error) {
cp := x509.NewCertPool()
if ok := cp.AppendCertsFromPEM(certBytes); !ok {
return nil, errors.New("failed to append certificate to the cert pool")
}
return &tls.Config{
RootCAs: cp,
}, nil
}