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util.go
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util.go
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// Copyright 2021 IBM Corp.
//
// 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 uploaders
import (
"crypto/tls"
"crypto/x509"
"net/http"
"os"
"emperror.dev/errors"
)
type withHeader struct {
http.Header
rt http.RoundTripper
}
func WithHeader(rt http.RoundTripper) withHeader {
if rt == nil {
rt = http.DefaultTransport
}
return withHeader{Header: make(http.Header), rt: rt}
}
func (h withHeader) RoundTrip(req *http.Request) (*http.Response, error) {
for k, v := range h.Header {
req.Header[k] = v
}
return h.rt.RoundTrip(req)
}
func WithBearerAuth(rt http.RoundTripper, token string) http.RoundTripper {
addHead := WithHeader(rt)
addHead.Header.Set("Authorization", "Bearer "+token)
return addHead
}
func GenerateCACertPool(
certs []*x509.Certificate,
files []string,
) (*tls.Config, error) {
caCertPool, err := x509.SystemCertPool()
if err != nil {
return nil, errors.Wrap(err, "failed to get system cert pool")
}
for _, file := range files {
caCert, err := os.ReadFile(file)
if err != nil {
return nil, errors.Wrap(err, "failed to load cert file")
}
caCertPool.AppendCertsFromPEM(caCert)
}
for _, cert := range certs {
caCertPool.AddCert(cert)
}
return &tls.Config{
RootCAs: caCertPool,
ClientCAs: caCertPool,
}, nil
}