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/pem" |
| 20 | "fmt" |
| 21 | "os" |
| 22 | |
| 23 | "github.com/caddyserver/caddy/v2" |
| 24 | "github.com/caddyserver/caddy/v2/caddyconfig/caddyfile" |
| 25 | ) |
| 26 | |
| 27 | func init() { |
| 28 | caddy.RegisterModule(LeafFileLoader{}) |
| 29 | } |
| 30 | |
| 31 | // LeafFileLoader loads leaf certificates from disk. |
| 32 | type LeafFileLoader struct { |
| 33 | Files []string `json:"files,omitempty"` |
| 34 | } |
| 35 | |
| 36 | // CaddyModule returns the Caddy module information. |
| 37 | func (LeafFileLoader) CaddyModule() caddy.ModuleInfo { |
| 38 | return caddy.ModuleInfo{ |
| 39 | ID: "tls.leaf_cert_loader.file", |
| 40 | New: func() caddy.Module { return new(LeafFileLoader) }, |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | // Provision implements caddy.Provisioner. |
| 45 | func (fl *LeafFileLoader) Provision(ctx caddy.Context) error { |
| 46 | repl, ok := ctx.Value(caddy.ReplacerCtxKey).(*caddy.Replacer) |
| 47 | if !ok { |
| 48 | repl = caddy.NewReplacer() |
| 49 | } |
| 50 | for k, path := range fl.Files { |
| 51 | fl.Files[k] = repl.ReplaceKnown(path, "") |
| 52 | } |
| 53 | return nil |
| 54 | } |
| 55 | |
| 56 | // UnmarshalCaddyfile implements caddyfile.Unmarshaler. |
| 57 | func (fl *LeafFileLoader) UnmarshalCaddyfile(d *caddyfile.Dispenser) error { |
| 58 | d.NextArg() |
| 59 | fl.Files = append(fl.Files, d.RemainingArgs()...) |
| 60 | return nil |
| 61 | } |
| 62 | |
| 63 | // LoadLeafCertificates returns the certificates to be loaded by fl. |
| 64 | func (fl LeafFileLoader) LoadLeafCertificates() ([]*x509.Certificate, error) { |
| 65 | certificates := make([]*x509.Certificate, 0, len(fl.Files)) |
| 66 | for _, path := range fl.Files { |
| 67 | ders, err := convertPEMFilesToDERBytes(path) |
| 68 | if err != nil { |
| 69 | return nil, err |
| 70 | } |
| 71 | certs, err := x509.ParseCertificates(ders) |
| 72 | if err != nil { |
| 73 | return nil, err |
| 74 | } |
| 75 | certificates = append(certificates, certs...) |
| 76 | } |
| 77 | return certificates, nil |
| 78 | } |
| 79 | |
| 80 | func convertPEMFilesToDERBytes(filename string) ([]byte, error) { |
| 81 | certDataPEM, err := os.ReadFile(filename) |
| 82 | if err != nil { |
| 83 | return nil, err |
| 84 | } |
| 85 | var ders []byte |
| 86 | // while block is not nil, we have more certificates in the file |
| 87 | for block, rest := pem.Decode(certDataPEM); block != nil; block, rest = pem.Decode(rest) { |
| 88 | if block.Type != "CERTIFICATE" { |
| 89 | return nil, fmt.Errorf("no CERTIFICATE pem block found in %s", filename) |
| 90 | } |
| 91 | ders = append( |
| 92 | ders, |
| 93 | block.Bytes..., |
| 94 | ) |
| 95 | } |
| 96 | // if we decoded nothing, return an error |
| 97 | if len(ders) == 0 { |
| 98 | return nil, fmt.Errorf("no CERTIFICATE pem block found in %s", filename) |
| 99 | } |
| 100 | return ders, nil |
| 101 | } |
| 102 | |
| 103 | // Interface guard |
| 104 | var ( |
| 105 | _ LeafCertificateLoader = (*LeafFileLoader)(nil) |
| 106 | _ caddy.Provisioner = (*LeafFileLoader)(nil) |
| 107 | _ caddyfile.Unmarshaler = (*LeafFileLoader)(nil) |
| 108 | ) |