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// 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 acmeserver
import (
"time"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
"github.com/caddyserver/caddy/v2/modules/caddypki"
)
func init() {
httpcaddyfile.RegisterDirective("acme_server", parseACMEServer)
}
// parseACMEServer sets up an ACME server handler from Caddyfile tokens.
//
// acme_server [<matcher>] {
// ca <id>
// lifetime <duration>
// resolvers <addresses...>
// challenges <challenges...>
// allow_wildcard_names
// allow {
// domains <domains...>
// ip_ranges <addresses...>
// }
// deny {
// domains <domains...>
// ip_ranges <addresses...>
// }
// sign_with_root
// }
func parseACMEServer(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error) {
h.Next() // consume directive name
matcherSet, err := h.ExtractMatcherSet()
if err != nil {
return nil, err
}
h.Next() // consume the directive name again (matcher parsing resets)
// no inline args allowed
if h.NextArg() {
return nil, h.ArgErr()
}
var acmeServer Handler
var ca *caddypki.CA
for h.NextBlock(0) {
switch h.Val() {
case "ca":
if !h.AllArgs(&acmeServer.CA) {
return nil, h.ArgErr()
}
if ca == nil {
ca = new(caddypki.CA)
}
ca.ID = acmeServer.CA
case "lifetime":
if !h.NextArg() {
return nil, h.ArgErr()
}
dur, err := caddy.ParseDuration(h.Val())
if err != nil {
return nil, err
}
if d := time.Duration(ca.IntermediateLifetime); d > 0 && dur > d {
return nil, h.Errf("certificate lifetime (%s) exceeds intermediate certificate lifetime (%s)", dur, d)
}
acmeServer.Lifetime = caddy.Duration(dur)
case "resolvers":
acmeServer.Resolvers = h.RemainingArgs()
if len(acmeServer.Resolvers) == 0 {
return nil, h.Errf("must specify at least one resolver address")
}
case "challenges":
acmeServer.Challenges = append(acmeServer.Challenges, stringToChallenges(h.RemainingArgs())...)
case "allow_wildcard_names":
if acmeServer.Policy == nil {
acmeServer.Policy = &Policy{}
}
acmeServer.Policy.AllowWildcardNames = true
case "allow":
r := &RuleSet{}
for h.Next() {
for h.NextBlock(h.Nesting() - 1) {
if h.CountRemainingArgs() == 0 {
return nil, h.ArgErr() // TODO:
}
switch h.Val() {
case "domains":
r.Domains = append(r.Domains, h.RemainingArgs()...)
case "ip_ranges":
r.IPRanges = append(r.IPRanges, h.RemainingArgs()...)
default:
return nil, h.Errf("unrecognized 'allow' subdirective: %s", h.Val())
}
}
}
if acmeServer.Policy == nil {
acmeServer.Policy = &Policy{}
}
acmeServer.Policy.Allow = r
case "deny":
r := &RuleSet{}
for h.Next() {
for h.NextBlock(h.Nesting() - 1) {
if h.CountRemainingArgs() == 0 {
return nil, h.ArgErr() // TODO:
}
switch h.Val() {
case "domains":
r.Domains = append(r.Domains, h.RemainingArgs()...)
case "ip_ranges":
r.IPRanges = append(r.IPRanges, h.RemainingArgs()...)
default:
return nil, h.Errf("unrecognized 'deny' subdirective: %s", h.Val())
}
}
}
if acmeServer.Policy == nil {
acmeServer.Policy = &Policy{}
}
acmeServer.Policy.Deny = r
case "sign_with_root":
if h.NextArg() {
return nil, h.ArgErr()
}
acmeServer.SignWithRoot = true
default:
return nil, h.Errf("unrecognized ACME server directive: %s", h.Val())
}
}
configVals := h.NewRoute(matcherSet, acmeServer)
if ca == nil {
return configVals, nil
}
return append(configVals, httpcaddyfile.ConfigValue{
Class: "pki.ca",
Value: ca,
}), nil
}
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