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