mirror of
https://github.com/caddyserver/caddy.git
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94 lines
2.7 KiB
Go
94 lines
2.7 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/caddy/v2"
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)
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func init() {
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caddy.RegisterModule(PEMLoader{})
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}
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// PEMLoader loads certificates and their associated keys by
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// decoding their PEM blocks directly. This has the advantage
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// of not needing to store them on disk at all.
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type PEMLoader []CertKeyPEMPair
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// Provision implements caddy.Provisioner.
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func (pl PEMLoader) Provision(ctx caddy.Context) error {
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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 pl {
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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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pl[k] = CertKeyPEMPair{
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CertificatePEM: repl.ReplaceKnown(pair.CertificatePEM, ""),
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KeyPEM: repl.ReplaceKnown(pair.KeyPEM, ""),
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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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// CaddyModule returns the Caddy module information.
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func (PEMLoader) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "tls.certificates.load_pem",
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New: func() caddy.Module { return new(PEMLoader) },
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}
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}
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// CertKeyPEMPair pairs certificate and key PEM blocks.
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type CertKeyPEMPair struct {
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// The certificate (public key) in PEM format.
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CertificatePEM string `json:"certificate"`
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// The private key in PEM format.
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KeyPEM string `json:"key"`
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// Arbitrary values to associate with this certificate.
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// Can be useful when you want to select a particular
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// certificate when there may be multiple valid candidates.
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Tags []string `json:"tags,omitempty"`
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}
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// LoadCertificates returns the certificates contained in pl.
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func (pl PEMLoader) LoadCertificates() ([]Certificate, error) {
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certs := make([]Certificate, 0, len(pl))
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for i, pair := range pl {
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cert, err := tls.X509KeyPair([]byte(pair.CertificatePEM), []byte(pair.KeyPEM))
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if err != nil {
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return nil, fmt.Errorf("PEM pair %d: %v", i, err)
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}
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certs = append(certs, Certificate{
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Certificate: cert,
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Tags: pair.Tags,
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})
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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 = (PEMLoader)(nil)
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_ caddy.Provisioner = (PEMLoader)(nil)
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)
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