1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
package server
import (
"context"
"crypto/x509"
"net"
"net/http"
"slices"
"strconv"
"go.alanpearce.eu/x/listenfd"
certmagic_redis "github.com/alanpearce/certmagic-storage-redis"
"github.com/ardanlabs/conf/v3"
"github.com/caddyserver/certmagic"
"github.com/libdns/powerdns"
"gitlab.com/tozd/go/errors"
)
type redisConfig struct {
Address string `conf:"required"`
Username string `conf:"default:default"`
Password string `conf:"required"`
EncryptionKey string `conf:"required"`
KeyPrefix string `conf:"default:certmagic"`
TLSEnabled bool `conf:"default:false,env:TLS_ENABLED"`
TLSInsecure bool `conf:"default:false,env:TLS_INSECURE"`
}
func (s *Server) serveTLS() (err error) {
log := s.log.Named("tls")
wildcardDomain := "*." + s.config.WildcardDomain
certificateDomains := slices.Clone(s.config.Domains)
// setting cfg.Logger is too late somehow
certmagic.Default.Logger = log.GetLogger().Named("certmagic")
certmagic.DefaultACME.Agreed = true
certmagic.DefaultACME.Email = s.config.Email
certmagic.DefaultACME.ListenHost = s.runtimeConfig.ListenAddress
certmagic.DefaultACME.AltHTTPPort = s.runtimeConfig.Port
certmagic.DefaultACME.AltTLSALPNPort = s.runtimeConfig.TLSPort
if s.runtimeConfig.Development {
ca := s.runtimeConfig.ACMECA
if ca == "" {
return errors.New("can't enable tls in development without an ACME_CA")
}
cp, err := x509.SystemCertPool()
if err != nil {
log.Warn("could not get system certificate pool", "error", err)
cp = x509.NewCertPool()
}
if cacert := s.runtimeConfig.ACMECACert; cacert != "" {
cp.AppendCertsFromPEM([]byte(cacert))
}
// caddy's ACME server (step-ca) doesn't specify an OCSP server
certmagic.Default.OCSP.DisableStapling = true
certmagic.DefaultACME.CA = s.runtimeConfig.ACMECA
certmagic.DefaultACME.TrustedRoots = cp
certmagic.DefaultACME.DisableTLSALPNChallenge = true
} else {
rc := &redisConfig{}
_, err = conf.Parse("REDIS", rc)
if err != nil {
return errors.WithMessage(err, "could not parse redis config")
}
pdns := &powerdns.Provider{}
_, err = conf.Parse("POWERDNS", pdns)
if err != nil {
return errors.WithMessage(err, "could not parse PowerDNS ACME config")
}
certmagic.DefaultACME.CA = certmagic.LetsEncryptProductionCA
certmagic.DefaultACME.DNS01Solver = &certmagic.DNS01Solver{
DNSManager: certmagic.DNSManager{
DNSProvider: pdns,
Logger: certmagic.Default.Logger,
},
}
certificateDomains = append(slices.Clone(s.config.Domains), wildcardDomain)
rs := certmagic_redis.New()
rs.Address = []string{rc.Address}
rs.Username = rc.Username
rs.Password = rc.Password
rs.EncryptionKey = rc.EncryptionKey
rs.KeyPrefix = rc.KeyPrefix
rs.TlsEnabled = rc.TLSEnabled
rs.TlsInsecure = rc.TLSInsecure
certmagic.Default.Storage = rs
err = rs.ProvisionCertMagic(context.TODO(), log.GetLogger())
if err != nil {
return errors.WithMessage(err, "could not provision redis storage")
}
}
ln, err := listenfd.GetListener(
1,
net.JoinHostPort(s.runtimeConfig.ListenAddress, strconv.Itoa(s.runtimeConfig.Port)),
log.Named("listenfd"),
)
if err != nil {
return errors.WithMessage(err, "could not bind plain socket")
}
go func(ln net.Listener, srv *http.Server) {
httpMux := http.NewServeMux()
httpMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if certmagic.LooksLikeHTTPChallenge(r) &&
certmagic.DefaultACME.HandleHTTPChallenge(w, r) {
return
}
url := r.URL
url.Scheme = "https"
port := s.config.BaseURL.Port()
if port == "" {
url.Host = r.Host
} else {
host, _, err := net.SplitHostPort(r.Host)
if err != nil {
log.Warn("error splitting host and port", "error", err)
host = r.Host
}
url.Host = net.JoinHostPort(host, s.config.BaseURL.Port())
}
http.Redirect(w, r, url.String(), http.StatusMovedPermanently)
})
srv.Handler = httpMux
if err := srv.Serve(ln); err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Error("error in http handler", "error", err)
}
}(ln, &http.Server{
ReadHeaderTimeout: s.ReadHeaderTimeout,
ReadTimeout: s.ReadTimeout,
WriteTimeout: s.WriteTimeout,
IdleTimeout: s.IdleTimeout,
})
log.Debug(
"starting certmagic",
"http_port",
s.runtimeConfig.Port,
"https_port",
s.runtimeConfig.TLSPort,
)
err = certmagic.ManageAsync(context.TODO(), certificateDomains)
if err != nil {
return errors.WithMessage(err, "could not enable TLS")
}
tlsConfig := certmagic.NewDefault().TLSConfig()
tlsConfig.NextProtos = append([]string{"h2", "http/1.1"}, tlsConfig.NextProtos...)
sln, err := listenfd.GetListenerTLS(
0,
net.JoinHostPort(s.runtimeConfig.ListenAddress, strconv.Itoa(s.runtimeConfig.TLSPort)),
tlsConfig,
log.Named("listenfd"),
)
if err != nil {
return errors.WithMessage(err, "could not bind tls socket")
}
return s.Serve(sln)
}
|