mirror of
https://github.com/caddyserver/caddy.git
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110 lines
2.9 KiB
Go
110 lines
2.9 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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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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package caddytls
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import (
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"crypto/tls"
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"fmt"
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"github.com/caddyserver/certmagic"
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"github.com/caddyserver/caddy/v2"
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)
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func init() {
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caddy.RegisterModule(StorageLoader{})
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}
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// StorageLoader loads certificates and their associated keys
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// from the globally configured storage module.
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type StorageLoader struct {
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// A list of pairs of certificate and key file names along with their
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// encoding format so that they can be loaded from storage.
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Pairs []CertKeyFilePair `json:"pairs,omitempty"`
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// Reference to the globally configured storage module.
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storage certmagic.Storage
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ctx caddy.Context
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}
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// CaddyModule returns the Caddy module information.
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func (StorageLoader) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "tls.certificates.load_storage",
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New: func() caddy.Module { return new(StorageLoader) },
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}
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}
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// Provision loads the storage module for sl.
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func (sl *StorageLoader) Provision(ctx caddy.Context) error {
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sl.storage = ctx.Storage()
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sl.ctx = ctx
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repl, ok := ctx.Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
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if !ok {
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repl = caddy.NewReplacer()
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}
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for k, pair := range sl.Pairs {
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for i, tag := range pair.Tags {
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pair.Tags[i] = repl.ReplaceKnown(tag, "")
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}
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sl.Pairs[k] = CertKeyFilePair{
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Certificate: repl.ReplaceKnown(pair.Certificate, ""),
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Key: repl.ReplaceKnown(pair.Key, ""),
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Format: repl.ReplaceKnown(pair.Format, ""),
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Tags: pair.Tags,
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}
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}
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return nil
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}
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// LoadCertificates returns the certificates to be loaded by sl.
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func (sl StorageLoader) LoadCertificates() ([]Certificate, error) {
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certs := make([]Certificate, 0, len(sl.Pairs))
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for _, pair := range sl.Pairs {
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certData, err := sl.storage.Load(sl.ctx, pair.Certificate)
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if err != nil {
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return nil, err
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}
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keyData, err := sl.storage.Load(sl.ctx, pair.Key)
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if err != nil {
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return nil, err
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}
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var cert tls.Certificate
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switch pair.Format {
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case "":
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fallthrough
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case "pem":
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cert, err = tls.X509KeyPair(certData, keyData)
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default:
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return nil, fmt.Errorf("unrecognized certificate/key encoding format: %s", pair.Format)
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}
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if err != nil {
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return nil, err
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}
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certs = append(certs, Certificate{Certificate: cert, Tags: pair.Tags})
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}
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return certs, nil
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}
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// Interface guard
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var (
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_ CertificateLoader = (*StorageLoader)(nil)
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_ caddy.Provisioner = (*StorageLoader)(nil)
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)
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