/
clouddns.go
144 lines (116 loc) · 4.2 KB
/
clouddns.go
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
// Package clouddns implements a DNS provider for solving the DNS-01 challenge using CloudDNS API.
package clouddns
import (
"context"
"errors"
"fmt"
"net/http"
"time"
"github.com/go-acme/lego/v4/challenge/dns01"
"github.com/go-acme/lego/v4/platform/config/env"
"github.com/go-acme/lego/v4/providers/dns/clouddns/internal"
)
// Environment variables names.
const (
envNamespace = "CLOUDDNS_"
EnvClientID = envNamespace + "CLIENT_ID"
EnvEmail = envNamespace + "EMAIL"
EnvPassword = envNamespace + "PASSWORD"
EnvTTL = envNamespace + "TTL"
EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
EnvPollingInterval = envNamespace + "POLLING_INTERVAL"
EnvHTTPTimeout = envNamespace + "HTTP_TIMEOUT"
)
// Config is used to configure the DNSProvider.
type Config struct {
ClientID string
Email string
Password string
TTL int
PropagationTimeout time.Duration
PollingInterval time.Duration
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider.
func NewDefaultConfig() *Config {
return &Config{
TTL: env.GetOrDefaultInt(EnvTTL, 300),
PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, 120*time.Second),
PollingInterval: env.GetOrDefaultSecond(EnvPollingInterval, 5*time.Second),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 30*time.Second),
},
}
}
// DNSProvider implements the challenge.Provider interface.
type DNSProvider struct {
client *internal.Client
config *Config
}
// NewDNSProvider returns a DNSProvider instance configured for CloudDNS.
// Credentials must be passed in the environment variables:
// CLOUDDNS_CLIENT_ID, CLOUDDNS_EMAIL, CLOUDDNS_PASSWORD.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get(EnvClientID, EnvEmail, EnvPassword)
if err != nil {
return nil, fmt.Errorf("clouddns: %w", err)
}
config := NewDefaultConfig()
config.ClientID = values[EnvClientID]
config.Email = values[EnvEmail]
config.Password = values[EnvPassword]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for CloudDNS.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("clouddns: the configuration of the DNS provider is nil")
}
if config.ClientID == "" || config.Email == "" || config.Password == "" {
return nil, errors.New("clouddns: credentials missing")
}
client := internal.NewClient(config.ClientID, config.Email, config.Password, config.TTL)
if config.HTTPClient != nil {
client.HTTPClient = config.HTTPClient
}
return &DNSProvider{client: client, config: config}, nil
}
// Timeout returns the timeout and interval to use when checking for DNS propagation.
// Adjusting here to cope with spikes in propagation times.
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
return d.config.PropagationTimeout, d.config.PollingInterval
}
// Present creates a TXT record using the specified parameters.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
info := dns01.GetChallengeInfo(domain, keyAuth)
authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
if err != nil {
return fmt.Errorf("clouddns: could not find zone for domain %q (%s): %w", domain, info.EffectiveFQDN, err)
}
ctx, err := d.client.CreateAuthenticatedContext(context.Background())
if err != nil {
return err
}
err = d.client.AddRecord(ctx, authZone, info.EffectiveFQDN, info.Value)
if err != nil {
return fmt.Errorf("clouddns: add record: %w", err)
}
return nil
}
// CleanUp removes the TXT record matching the specified parameters.
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
info := dns01.GetChallengeInfo(domain, keyAuth)
authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
if err != nil {
return fmt.Errorf("clouddns: could not find zone for domain %q (%s): %w", domain, info.EffectiveFQDN, err)
}
ctx, err := d.client.CreateAuthenticatedContext(context.Background())
if err != nil {
return err
}
err = d.client.DeleteRecord(ctx, authZone, info.EffectiveFQDN)
if err != nil {
return fmt.Errorf("clouddns: delete record: %w", err)
}
return nil
}