-
Notifications
You must be signed in to change notification settings - Fork 390
/
vultrProvider.go
255 lines (216 loc) · 6.93 KB
/
vultrProvider.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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
package vultr
import (
"context"
"encoding/json"
"errors"
"fmt"
"strconv"
"strings"
"github.com/miekg/dns/dnsutil"
"github.com/vultr/govultr"
"github.com/StackExchange/dnscontrol/v2/models"
"github.com/StackExchange/dnscontrol/v2/pkg/diff"
"github.com/StackExchange/dnscontrol/v2/providers"
)
/*
Vultr API DNS provider:
Info required in `creds.json`:
- token
*/
var features = providers.DocumentationNotes{
providers.CanUseAlias: providers.Cannot(),
providers.CanUseCAA: providers.Can(),
providers.CanUsePTR: providers.Cannot(),
providers.CanUseSRV: providers.Can(),
providers.CanUseTLSA: providers.Cannot(),
providers.CanUseSSHFP: providers.Can(),
providers.DocCreateDomains: providers.Can(),
providers.DocOfficiallySupported: providers.Cannot(),
providers.CanGetZones: providers.Can(),
}
func init() {
providers.RegisterDomainServiceProviderType("VULTR", NewProvider, features)
}
// Provider represents the Vultr DNSServiceProvider.
type Provider struct {
client *govultr.Client
token string
}
// defaultNS contains the default nameservers for Vultr.
var defaultNS = []string{
"ns1.vultr.com",
"ns2.vultr.com",
}
// NewProvider initializes a Vultr DNSServiceProvider.
func NewProvider(m map[string]string, metadata json.RawMessage) (providers.DNSServiceProvider, error) {
token := m["token"]
if token == "" {
return nil, fmt.Errorf("Vultr API token is required")
}
client := govultr.NewClient(nil, token)
client.SetUserAgent("dnscontrol")
_, err := client.Account.GetInfo(context.Background())
return &Provider{client, token}, err
}
// GetZoneRecords gets the records of a zone and returns them in RecordConfig format.
func (api *Provider) GetZoneRecords(domain string) (models.Records, error) {
records, err := api.client.DNSRecord.List(context.Background(), domain)
if err != nil {
return nil, err
}
curRecords := make(models.Records, len(records))
for i := range records {
r, err := toRecordConfig(domain, &records[i])
if err != nil {
return nil, err
}
curRecords[i] = r
}
return curRecords, nil
}
// GetDomainCorrections gets the corrections for a DomainConfig.
func (api *Provider) GetDomainCorrections(dc *models.DomainConfig) ([]*models.Correction, error) {
dc.Punycode()
curRecords, err := api.GetZoneRecords(dc.Name)
if err != nil {
return nil, err
}
models.PostProcessRecords(curRecords)
differ := diff.New(dc)
_, create, delete, modify := differ.IncrementalDiff(curRecords)
var corrections []*models.Correction
for _, mod := range delete {
id := mod.Existing.Original.(*govultr.DNSRecord).RecordID
corrections = append(corrections, &models.Correction{
Msg: fmt.Sprintf("%s; Vultr RecordID: %v", mod.String(), id),
F: func() error {
return api.client.DNSRecord.Delete(context.Background(), dc.Name, strconv.Itoa(id))
},
})
}
for _, mod := range create {
r := toVultrRecord(dc, mod.Desired, 0)
corrections = append(corrections, &models.Correction{
Msg: mod.String(),
F: func() error {
return api.client.DNSRecord.Create(context.Background(), dc.Name, r.Type, r.Name, r.Data, r.TTL, r.Priority)
},
})
}
for _, mod := range modify {
r := toVultrRecord(dc, mod.Desired, mod.Existing.Original.(*govultr.DNSRecord).RecordID)
corrections = append(corrections, &models.Correction{
Msg: fmt.Sprintf("%s; Vultr RecordID: %v", mod.String(), r.RecordID),
F: func() error {
return api.client.DNSRecord.Update(context.Background(), dc.Name, r)
},
})
}
return corrections, nil
}
// GetNameservers gets the Vultr nameservers for a domain
func (api *Provider) GetNameservers(domain string) ([]*models.Nameserver, error) {
return models.ToNameservers(defaultNS)
}
// EnsureDomainExists adds a domain to the Vutr DNS service if it does not exist
func (api *Provider) EnsureDomainExists(domain string) error {
if ok, err := api.isDomainInAccount(domain); err != nil {
return err
} else if ok {
return nil
}
// Vultr requires an initial IP, use a dummy one.
return api.client.DNSDomain.Create(context.Background(), domain, "0.0.0.0")
}
func (api *Provider) isDomainInAccount(domain string) (bool, error) {
domains, err := api.client.DNSDomain.List(context.Background())
if err != nil {
return false, err
}
for _, d := range domains {
if d.Domain == domain {
return true, nil
}
}
return false, nil
}
// toRecordConfig converts a Vultr DNSRecord to a RecordConfig. #rtype_variations
func toRecordConfig(domain string, r *govultr.DNSRecord) (*models.RecordConfig, error) {
origin, data := domain, r.Data
rc := &models.RecordConfig{
TTL: uint32(r.TTL),
Original: r,
}
rc.SetLabel(r.Name, domain)
switch rtype := r.Type; rtype {
case "CNAME", "NS":
rc.Type = r.Type
// Make target into a FQDN if it is a CNAME, NS, MX, or SRV.
if !strings.HasSuffix(data, ".") {
data = data + "."
}
// FIXME(tlim): the AddOrigin() might be unneeded. Please test.
return rc, rc.SetTarget(dnsutil.AddOrigin(data, origin))
case "CAA":
// Vultr returns CAA records in the format "[flag] [tag] [value]".
return rc, rc.SetTargetCAAString(data)
case "MX":
if !strings.HasSuffix(data, ".") {
data = data + "."
}
return rc, rc.SetTargetMX(uint16(r.Priority), data)
case "SRV":
// Vultr returns SRV records in the format "[weight] [port] [target]".
return rc, rc.SetTargetSRVPriorityString(uint16(r.Priority), data)
case "TXT":
// Remove quotes if it is a TXT record.
if !strings.HasPrefix(data, `"`) || !strings.HasSuffix(data, `"`) {
return nil, errors.New("Unexpected lack of quotes in TXT record from Vultr")
}
return rc, rc.SetTargetTXT(data[1 : len(data)-1])
default:
return rc, rc.PopulateFromString(rtype, r.Data, origin)
}
}
// toVultrRecord converts a RecordConfig converted by toRecordConfig back to a Vultr DNSRecord. #rtype_variations
func toVultrRecord(dc *models.DomainConfig, rc *models.RecordConfig, vultrID int) *govultr.DNSRecord {
name := rc.GetLabel()
// Vultr uses a blank string to represent the apex domain.
if name == "@" {
name = ""
}
data := rc.GetTargetField()
// Vultr does not use a period suffix for CNAME, NS, or MX.
if strings.HasSuffix(data, ".") {
data = data[:len(data)-1]
}
// Vultr needs TXT record in quotes.
if rc.Type == "TXT" {
data = fmt.Sprintf(`"%s"`, data)
}
priority := 0
if rc.Type == "MX" {
priority = int(rc.MxPreference)
}
if rc.Type == "SRV" {
priority = int(rc.SrvPriority)
}
r := &govultr.DNSRecord{
RecordID: vultrID,
Type: rc.Type,
Name: name,
Data: data,
TTL: int(rc.TTL),
Priority: priority,
}
switch rtype := rc.Type; rtype { // #rtype_variations
case "SRV":
r.Data = fmt.Sprintf("%v %v %s", rc.SrvWeight, rc.SrvPort, rc.GetTargetField())
case "CAA":
r.Data = fmt.Sprintf(`%v %s "%s"`, rc.CaaFlag, rc.CaaTag, rc.GetTargetField())
case "SSHFP":
r.Data = fmt.Sprintf("%d %d %s", rc.SshfpAlgorithm, rc.SshfpFingerprint, rc.GetTargetField())
default:
}
return r
}