1 files changed, 61 insertions, 0 deletions
diff --git a/modules/caddytls/fileloader.go b/modules/caddytls/fileloader.go
new file mode 100644
index 000000000..fae2275a8
--- /dev/null
+++ b/modules/caddytls/fileloader.go
@@ -0,0 +1,61 @@
+package caddytls
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io/ioutil"
+
+	"bitbucket.org/lightcodelabs/caddy2"
+)
+
+func init() {
+	caddy2.RegisterModule(caddy2.Module{
+		Name: "tls.certificates.load_files",
+		New:  func() (interface{}, error) { return fileLoader{}, nil },
+	})
+}
+
+// fileLoader loads certificates and their associated keys from disk.
+type fileLoader []CertKeyFilePair
+
+// CertKeyFilePair pairs certificate and key file names along with their
+// encoding format so that they can be loaded from disk.
+type CertKeyFilePair struct {
+	Certificate string `json:"certificate"`
+	Key         string `json:"key"`
+	Format      string `json:"format,omitempty"` // "pem" is default
+}
+
+// LoadCertificates returns the certificates to be loaded by fl.
+func (fl fileLoader) LoadCertificates() ([]tls.Certificate, error) {
+	var certs []tls.Certificate
+	for _, pair := range fl {
+		certData, err := ioutil.ReadFile(pair.Certificate)
+		if err != nil {
+			return nil, err
+		}
+		keyData, err := ioutil.ReadFile(pair.Key)
+		if err != nil {
+			return nil, err
+		}
+
+		var cert tls.Certificate
+		switch pair.Format {
+		case "":
+			fallthrough
+		case "pem":
+			cert, err = tls.X509KeyPair(certData, keyData)
+		default:
+			return nil, fmt.Errorf("unrecognized certificate/key encoding format: %s", pair.Format)
+		}
+		if err != nil {
+			return nil, err
+		}
+
+		certs = append(certs, cert)
+	}
+	return certs, nil
+}
+
+// Interface guard
+var _ CertificateLoader = (fileLoader)(nil)