49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
/*
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Copyright 2023 The Crossplane Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package oci
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import (
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"crypto/x509"
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"os"
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"path/filepath"
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"github.com/crossplane/crossplane-runtime/pkg/errors"
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)
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// ParseCertificatesFromPath parses PEM file containing extra x509
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// certificates(s) and combines them with the built in root CA CertPool.
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func ParseCertificatesFromPath(path string) (*x509.CertPool, error) {
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// Get the SystemCertPool, continue with an empty pool on error
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rootCAs, _ := x509.SystemCertPool()
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if rootCAs == nil {
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rootCAs = x509.NewCertPool()
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}
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// Read in the cert file
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certs, err := os.ReadFile(filepath.Clean(path))
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if err != nil {
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return nil, errors.Wrapf(err, "Failed to append %q to RootCAs", path)
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}
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// Append our cert to the system pool
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if ok := rootCAs.AppendCertsFromPEM(certs); !ok {
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return nil, errors.Errorf("No certificates could be parsed from %q", path)
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}
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return rootCAs, nil
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}
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