forked from go-acme/lego
-
-
Notifications
You must be signed in to change notification settings - Fork 1
/
selectel.go
154 lines (129 loc) · 4.41 KB
/
selectel.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
145
146
147
148
149
150
151
152
153
154
// Package selectel implements a DNS provider for solving the DNS-01 challenge using Selectel Domains API.
// Selectel Domain API reference: https://kb.selectel.com/23136054.html
// Token: https://my.selectel.ru/profile/apikeys
package selectel
import (
"errors"
"fmt"
"net/http"
"time"
"github.com/go-acme/lego/challenge/dns01"
"github.com/go-acme/lego/platform/config/env"
"github.com/go-acme/lego/providers/dns/selectel/internal"
)
const (
defaultBaseURL = "https://api.selectel.ru/domains/v1"
minTTL = 60
)
const (
envNamespace = "SELECTEL_"
baseURLEnvVar = envNamespace + "BASE_URL"
apiTokenEnvVar = envNamespace + "API_TOKEN"
ttlEnvVar = envNamespace + "TTL"
propagationTimeoutEnvVar = envNamespace + "PROPAGATION_TIMEOUT"
pollingIntervalEnvVar = envNamespace + "POLLING_INTERVAL"
httpTimeoutEnvVar = envNamespace + "HTTP_TIMEOUT"
)
// Config is used to configure the creation of the DNSProvider.
type Config struct {
BaseURL string
Token string
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider.
func NewDefaultConfig() *Config {
return &Config{
BaseURL: env.GetOrDefaultString(baseURLEnvVar, defaultBaseURL),
TTL: env.GetOrDefaultInt(ttlEnvVar, minTTL),
PropagationTimeout: env.GetOrDefaultSecond(propagationTimeoutEnvVar, 120*time.Second),
PollingInterval: env.GetOrDefaultSecond(pollingIntervalEnvVar, 2*time.Second),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond(httpTimeoutEnvVar, 30*time.Second),
},
}
}
// DNSProvider is an implementation of the acme.ChallengeProvider interface.
type DNSProvider struct {
config *Config
client *internal.Client
}
// NewDNSProvider returns a DNSProvider instance configured for Selectel Domains API.
// API token must be passed in the environment variable SELECTEL_API_TOKEN.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get(apiTokenEnvVar)
if err != nil {
return nil, fmt.Errorf("selectel: %v", err)
}
config := NewDefaultConfig()
config.Token = values[apiTokenEnvVar]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for selectel.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("selectel: the configuration of the DNS provider is nil")
}
if config.Token == "" {
return nil, errors.New("selectel: credentials missing")
}
if config.TTL < minTTL {
return nil, fmt.Errorf("selectel: invalid TTL, TTL (%d) must be greater than %d", config.TTL, minTTL)
}
client := internal.NewClient(internal.ClientOpts{
BaseURL: config.BaseURL,
Token: config.Token,
HTTPClient: config.HTTPClient,
})
return &DNSProvider{config: config, client: client}, 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 to fulfill DNS-01 challenge.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
domainObj, err := d.client.GetDomainByName(domain)
if err != nil {
return fmt.Errorf("selectel: %v", err)
}
txtRecord := internal.Record{
Type: "TXT",
TTL: d.config.TTL,
Name: fqdn,
Content: value,
}
_, err = d.client.AddRecord(domainObj.ID, txtRecord)
if err != nil {
return fmt.Errorf("selectel: %v", err)
}
return nil
}
// CleanUp removes a TXT record used for DNS-01 challenge.
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _ := dns01.GetRecord(domain, keyAuth)
recordName := dns01.UnFqdn(fqdn)
domainObj, err := d.client.GetDomainByName(domain)
if err != nil {
return fmt.Errorf("selectel: %v", err)
}
records, err := d.client.ListRecords(domainObj.ID)
if err != nil {
return fmt.Errorf("selectel: %v", err)
}
// Delete records with specific FQDN
var lastErr error
for _, record := range records {
if record.Name == recordName {
err = d.client.DeleteRecord(domainObj.ID, record.ID)
if err != nil {
lastErr = fmt.Errorf("selectel: %v", err)
}
}
}
return lastErr
}