caddy/modules/caddytls/fileloader.go
Matthew Holt c9980fd367
Refactor Caddyfile adapter and module registration
Use piles from which to draw config values.

Module values can return their name, so now we can do two-way mapping
from value to name and name to value; whereas before we could only map
name to value. This was problematic with the Caddyfile adapter since
it receives values and needs to know the name to put in the config.
2019-08-21 10:46:35 -06:00

82 lines
2.2 KiB
Go

// Copyright 2015 Matthew Holt and The Caddy 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 caddytls
import (
"crypto/tls"
"fmt"
"io/ioutil"
"github.com/caddyserver/caddy/v2"
)
func init() {
caddy.RegisterModule(FileLoader{})
}
// FileLoader loads certificates and their associated keys from disk.
type FileLoader []CertKeyFilePair
// CaddyModule returns the Caddy module information.
func (FileLoader) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
Name: "tls.certificates.load_files",
New: func() caddy.Module { return new(FileLoader) },
}
}
// 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
Tags []string `json:"tags,omitempty"`
}
// LoadCertificates returns the certificates to be loaded by fl.
func (fl FileLoader) LoadCertificates() ([]Certificate, error) {
var certs []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, Certificate{Certificate: cert, Tags: pair.Tags})
}
return certs, nil
}
// Interface guard
var _ CertificateLoader = (FileLoader)(nil)