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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build aix dragonfly freebsd hurd js,wasm linux netbsd openbsd solaris
package x509
import (
"io/ioutil"
"os"
)
// Possible directories with certificate files; stop after successfully
// reading at least one file from a directory.
var certDirectories = []string{
"/etc/ssl/certs", // SLES10/SLES11, https://golang.org/issue/12139
"/system/etc/security/cacerts", // Android
"/usr/local/share/certs", // FreeBSD
"/etc/pki/tls/certs", // Fedora/RHEL
"/etc/openssl/certs", // NetBSD
"/var/ssl/certs", // AIX
}
const (
// certFileEnv is the environment variable which identifies where to locate
// the SSL certificate file. If set this overrides the system default.
certFileEnv = "SSL_CERT_FILE"
// certDirEnv is the environment variable which identifies which directory
// to check for SSL certificate files. If set this overrides the system default.
certDirEnv = "SSL_CERT_DIR"
)
func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
return nil, nil
}
func loadSystemRoots() (*CertPool, error) {
roots := NewCertPool()
files := certFiles
if f := os.Getenv(certFileEnv); f != "" {
files = []string{f}
}
var firstErr error
for _, file := range files {
data, err := ioutil.ReadFile(file)
if err == nil {
roots.AppendCertsFromPEM(data)
break
}
if firstErr == nil && !os.IsNotExist(err) {
firstErr = err
}
}
dirs := certDirectories
if d := os.Getenv(certDirEnv); d != "" {
dirs = []string{d}
}
for _, directory := range dirs {
fis, err := ioutil.ReadDir(directory)
if err != nil {
if firstErr == nil && !os.IsNotExist(err) {
firstErr = err
}
continue
}
rootsAdded := false
for _, fi := range fis {
data, err := ioutil.ReadFile(directory + "/" + fi.Name())
if err == nil && roots.AppendCertsFromPEM(data) {
rootsAdded = true
}
}
if rootsAdded {
return roots, nil
}
}
if len(roots.certs) > 0 || firstErr == nil {
return roots, nil
}
return nil, firstErr
}
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