Ensure to load only regular files for CAs (#5612)

In kubernetes statefulset like environments when secrets
are mounted to pods they have sub-directories, we should
ideally be only looking for regular files here and skip
all others.
This commit is contained in:
Harshavardhana 2018-03-07 08:46:28 -08:00 committed by Nitish Tiwari
parent b325593b47
commit 27258b9c54
2 changed files with 12 additions and 20 deletions

View file

@ -23,7 +23,6 @@ import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
)
// TLSPrivateKeyPassword is the environment variable which contains the password used
@ -64,14 +63,18 @@ func parsePublicCertFile(certFile string) (x509Certs []*x509.Certificate, err er
func getRootCAs(certsCAsDir string) (*x509.CertPool, error) {
// Get all CA file names.
var caFiles []string
fis, err := ioutil.ReadDir(certsCAsDir)
fis, err := readDir(certsCAsDir)
if err != nil {
return nil, err
}
for _, fi := range fis {
caFiles = append(caFiles, filepath.Join(certsCAsDir, fi.Name()))
// Skip all directories.
if hasSuffix(fi, slashSeparator) {
continue
}
// We are only interested in regular files here.
caFiles = append(caFiles, pathJoin(certsCAsDir, fi))
}
if len(caFiles) == 0 {
return nil, nil
}

View file

@ -219,27 +219,16 @@ func TestGetRootCAs(t *testing.T) {
t.Fatalf("Unable create test file. %v", err)
}
nonexistentErr := fmt.Errorf("open nonexistent-dir: no such file or directory")
if runtime.GOOS == "windows" {
// Below concatenation is done to get rid of goline error
// "error strings should not be capitalized or end with punctuation or a newline"
nonexistentErr = fmt.Errorf("open nonexistent-dir:" + " The system cannot find the file specified.")
}
err1 := fmt.Errorf("read %s: is a directory", filepath.Join(dir1, "empty-dir"))
if runtime.GOOS == "windows" {
// Below concatenation is done to get rid of goline error
// "error strings should not be capitalized or end with punctuation or a newline"
err1 = fmt.Errorf("read %s:"+" The handle is invalid.", filepath.Join(dir1, "empty-dir"))
}
testCases := []struct {
certCAsDir string
expectedErr error
}{
{"nonexistent-dir", nonexistentErr},
{dir1, err1},
{"nonexistent-dir", errFileNotFound},
// Ignores directories.
{dir1, nil},
// Ignore empty directory.
{emptydir, nil},
// Loads the cert properly.
{dir2, nil},
}