mirror of https://github.com/minio/minio.git
85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// +build !windows
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/*
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* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
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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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*/
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package certs
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import (
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"crypto/x509"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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)
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// Possible directories with certificate files, this is an extended
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// list from https://golang.org/src/crypto/x509/root_unix.go?#L18
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// for k8s platform
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var certDirectories = []string{
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"/var/run/secrets/kubernetes.io/serviceaccount",
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}
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// readUniqueDirectoryEntries is like ioutil.ReadDir but omits
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// symlinks that point within the directory.
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func readUniqueDirectoryEntries(dir string) ([]os.FileInfo, error) {
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fis, err := ioutil.ReadDir(dir)
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if err != nil {
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return nil, err
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}
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uniq := fis[:0]
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for _, fi := range fis {
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if !isSameDirSymlink(fi, dir) {
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uniq = append(uniq, fi)
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}
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}
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return uniq, nil
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}
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// isSameDirSymlink reports whether fi in dir is a symlink with a
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// target not containing a slash.
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func isSameDirSymlink(fi os.FileInfo, dir string) bool {
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if fi.Mode()&os.ModeSymlink == 0 {
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return false
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}
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target, err := os.Readlink(filepath.Join(dir, fi.Name()))
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return err == nil && !strings.Contains(target, "/")
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}
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func loadSystemRoots() (*x509.CertPool, error) {
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caPool, err := x509.SystemCertPool()
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if err != nil {
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return caPool, err
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}
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for _, directory := range certDirectories {
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fis, err := readUniqueDirectoryEntries(directory)
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if err != nil {
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if os.IsNotExist(err) || os.IsPermission(err) {
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return caPool, nil
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}
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return caPool, err
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}
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for _, fi := range fis {
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data, err := ioutil.ReadFile(directory + "/" + fi.Name())
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if err == nil {
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caPool.AppendCertsFromPEM(data)
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}
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}
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}
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return caPool, nil
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}
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