Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS
Mirrored from https://github.com/Slazee/caddy.git
Synced Nov 11, 01:00 UTC
| 1 | // Copyright 2015 Matthew Holt and The Caddy Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package caddytls |
| 16 | |
| 17 | import ( |
| 18 | "crypto/x509" |
| 19 | "encoding/json" |
| 20 | "encoding/pem" |
| 21 | "fmt" |
| 22 | |
| 23 | "github.com/caddyserver/certmagic" |
| 24 | |
| 25 | "github.com/caddyserver/caddy/v2" |
| 26 | ) |
| 27 | |
| 28 | func init() { |
| 29 | caddy.RegisterModule(LeafStorageLoader{}) |
| 30 | } |
| 31 | |
| 32 | // LeafStorageLoader loads leaf certificates from the |
| 33 | // globally configured storage module. |
| 34 | type LeafStorageLoader struct { |
| 35 | // A list of certificate file names to be loaded from storage. |
| 36 | Certificates []string `json:"certificates,omitempty"` |
| 37 | |
| 38 | // The storage module where the trusted leaf certificates are stored. Absent |
| 39 | // explicit storage implies the use of Caddy default storage. |
| 40 | StorageRaw json.RawMessage `json:"storage,omitempty" caddy:"namespace=caddy.storage inline_key=module"` |
| 41 | |
| 42 | // Reference to the globally configured storage module. |
| 43 | storage certmagic.Storage |
| 44 | |
| 45 | ctx caddy.Context |
| 46 | } |
| 47 | |
| 48 | // CaddyModule returns the Caddy module information. |
| 49 | func (LeafStorageLoader) CaddyModule() caddy.ModuleInfo { |
| 50 | return caddy.ModuleInfo{ |
| 51 | ID: "tls.leaf_cert_loader.storage", |
| 52 | New: func() caddy.Module { return new(LeafStorageLoader) }, |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | // Provision loads the storage module for sl. |
| 57 | func (sl *LeafStorageLoader) Provision(ctx caddy.Context) error { |
| 58 | if sl.StorageRaw != nil { |
| 59 | val, err := ctx.LoadModule(sl, "StorageRaw") |
| 60 | if err != nil { |
| 61 | return fmt.Errorf("loading storage module: %v", err) |
| 62 | } |
| 63 | cmStorage, err := val.(caddy.StorageConverter).CertMagicStorage() |
| 64 | if err != nil { |
| 65 | return fmt.Errorf("creating storage configuration: %v", err) |
| 66 | } |
| 67 | sl.storage = cmStorage |
| 68 | } |
| 69 | if sl.storage == nil { |
| 70 | sl.storage = ctx.Storage() |
| 71 | } |
| 72 | sl.ctx = ctx |
| 73 | |
| 74 | repl, ok := ctx.Value(caddy.ReplacerCtxKey).(*caddy.Replacer) |
| 75 | if !ok { |
| 76 | repl = caddy.NewReplacer() |
| 77 | } |
| 78 | for k, path := range sl.Certificates { |
| 79 | sl.Certificates[k] = repl.ReplaceKnown(path, "") |
| 80 | } |
| 81 | return nil |
| 82 | } |
| 83 | |
| 84 | // LoadLeafCertificates returns the certificates to be loaded by sl. |
| 85 | func (sl LeafStorageLoader) LoadLeafCertificates() ([]*x509.Certificate, error) { |
| 86 | certificates := make([]*x509.Certificate, 0, len(sl.Certificates)) |
| 87 | for _, path := range sl.Certificates { |
| 88 | certData, err := sl.storage.Load(sl.ctx, path) |
| 89 | if err != nil { |
| 90 | return nil, err |
| 91 | } |
| 92 | |
| 93 | ders, err := convertPEMToDER(certData) |
| 94 | if err != nil { |
| 95 | return nil, err |
| 96 | } |
| 97 | certs, err := x509.ParseCertificates(ders) |
| 98 | if err != nil { |
| 99 | return nil, err |
| 100 | } |
| 101 | certificates = append(certificates, certs...) |
| 102 | } |
| 103 | return certificates, nil |
| 104 | } |
| 105 | |
| 106 | func convertPEMToDER(pemData []byte) ([]byte, error) { |
| 107 | var ders []byte |
| 108 | // while block is not nil, we have more certificates in the file |
| 109 | for block, rest := pem.Decode(pemData); block != nil; block, rest = pem.Decode(rest) { |
| 110 | if block.Type != "CERTIFICATE" { |
| 111 | return nil, fmt.Errorf("no CERTIFICATE pem block found in the given pem data") |
| 112 | } |
| 113 | ders = append( |
| 114 | ders, |
| 115 | block.Bytes..., |
| 116 | ) |
| 117 | } |
| 118 | // if we decoded nothing, return an error |
| 119 | if len(ders) == 0 { |
| 120 | return nil, fmt.Errorf("no CERTIFICATE pem block found in the given pem data") |
| 121 | } |
| 122 | return ders, nil |
| 123 | } |
| 124 | |
| 125 | // Interface guard |
| 126 | var ( |
| 127 | _ LeafCertificateLoader = (*LeafStorageLoader)(nil) |
| 128 | _ caddy.Provisioner = (*LeafStorageLoader)(nil) |
| 129 | ) |