mirror of
https://github.com/StackExchange/dnscontrol.git
synced 2024-09-20 14:56:20 +08:00
373 lines
10 KiB
Go
373 lines
10 KiB
Go
package hostingde
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import (
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"encoding/json"
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"fmt"
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"math"
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"sort"
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"strings"
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"time"
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"github.com/StackExchange/dnscontrol/v4/models"
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"github.com/StackExchange/dnscontrol/v4/pkg/diff"
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"github.com/StackExchange/dnscontrol/v4/providers"
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)
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var defaultNameservers = []string{"ns1.hosting.de", "ns2.hosting.de", "ns3.hosting.de"}
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var features = providers.DocumentationNotes{
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// The default for unlisted capabilities is 'Cannot'.
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// See providers/capabilities.go for the entire list of capabilities.
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providers.CanAutoDNSSEC: providers.Can(),
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providers.CanGetZones: providers.Can(),
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providers.CanConcur: providers.Cannot(),
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providers.CanUseAlias: providers.Can(),
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providers.CanUseCAA: providers.Can(),
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providers.CanUseDS: providers.Can(),
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providers.CanUseLOC: providers.Cannot(),
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providers.CanUseNAPTR: providers.Cannot(),
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providers.CanUsePTR: providers.Can(),
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providers.CanUseSOA: providers.Can(),
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providers.CanUseSRV: providers.Can(),
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providers.CanUseSSHFP: providers.Can(),
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providers.CanUseTLSA: providers.Can(),
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providers.DocCreateDomains: providers.Can(),
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providers.DocDualHost: providers.Can(),
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providers.DocOfficiallySupported: providers.Cannot(),
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}
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func init() {
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providers.RegisterRegistrarType("HOSTINGDE", newHostingdeReg)
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fns := providers.DspFuncs{
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Initializer: newHostingdeDsp,
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RecordAuditor: AuditRecords,
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}
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providers.RegisterDomainServiceProviderType("HOSTINGDE", fns, features)
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}
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type providerMeta struct {
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DefaultNS []string `json:"default_ns"`
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}
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func newHostingde(m map[string]string, providermeta json.RawMessage) (*hostingdeProvider, error) {
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authToken, ownerAccountID, filterAccountID, baseURL := m["authToken"], m["ownerAccountId"], m["filterAccountId"], m["baseURL"]
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if authToken == "" {
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return nil, fmt.Errorf("hosting.de: authtoken must be provided")
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}
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if baseURL == "" {
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baseURL = "https://secure.hosting.de"
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}
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baseURL = strings.TrimSuffix(baseURL, "/")
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hp := &hostingdeProvider{
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authToken: authToken,
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ownerAccountID: ownerAccountID,
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filterAccountID: filterAccountID,
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baseURL: baseURL,
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nameservers: defaultNameservers,
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}
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if len(providermeta) > 0 {
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var pm providerMeta
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if err := json.Unmarshal(providermeta, &pm); err != nil {
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return nil, fmt.Errorf("hosting.de: could not parse providermeta: %w", err)
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}
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if len(pm.DefaultNS) > 0 {
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hp.nameservers = pm.DefaultNS
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}
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}
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return hp, nil
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}
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func newHostingdeDsp(m map[string]string, providermeta json.RawMessage) (providers.DNSServiceProvider, error) {
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return newHostingde(m, providermeta)
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}
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func newHostingdeReg(m map[string]string) (providers.Registrar, error) {
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return newHostingde(m, json.RawMessage{})
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}
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func (hp *hostingdeProvider) GetNameservers(domain string) ([]*models.Nameserver, error) {
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return models.ToNameservers(hp.nameservers)
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}
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func (hp *hostingdeProvider) GetZoneRecords(domain string, meta map[string]string) (models.Records, error) {
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zone, err := hp.getZone(domain)
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if err != nil {
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return nil, err
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}
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return hp.APIRecordsToStandardRecordsModel(domain, zone.Records), nil
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}
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func (hp *hostingdeProvider) APIRecordsToStandardRecordsModel(domain string, src []record) models.Records {
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records := []*models.RecordConfig{}
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for _, r := range src {
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if r.Type == "SOA" {
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continue
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}
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records = append(records, r.nativeToRecord(domain))
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}
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return records
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}
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func soaToString(s soaValues) string {
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return fmt.Sprintf("refresh=%d retry=%d expire=%d negativettl=%d ttl=%d", s.Refresh, s.Retry, s.Expire, s.NegativeTTL, s.TTL)
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}
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// GetZoneRecordsCorrections returns a list of corrections that will turn existing records into dc.Records.
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func (hp *hostingdeProvider) GetZoneRecordsCorrections(dc *models.DomainConfig, records models.Records) ([]*models.Correction, error) {
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var err error
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// TTL must be between (inclusive) 1m and 1y (in fact, a little bit more)
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for _, r := range dc.Records {
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if r.TTL < 60 {
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r.TTL = 60
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}
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if r.TTL > 31556926 {
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r.TTL = 31556926
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}
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}
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zoneChanged := false
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zone, err := hp.getZone(dc.Name)
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if err != nil {
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return nil, err
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}
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toReport, create, del, mod, err := diff.NewCompat(dc).IncrementalDiff(records)
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if err != nil {
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return nil, err
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}
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// Start corrections with the reports
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corrections := diff.GenerateMessageCorrections(toReport)
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// NOPURGE
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if dc.KeepUnknown {
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del = nil
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}
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// remove SOA record from corrections as it is handled separately
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for i, r := range create {
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if r.Desired.Type == "SOA" {
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create = append(create[:i], create[i+1:]...)
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break
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}
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}
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if len(create) != 0 || len(del) != 0 || len(mod) != 0 {
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zoneChanged = true
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}
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msg := []string{}
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for _, c := range append(del, append(create, mod...)...) {
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msg = append(msg, c.String())
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}
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var desiredSoa *models.RecordConfig
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for _, r := range dc.Records {
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if r.Type == "SOA" && r.Name == "@" {
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desiredSoa = r
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break
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}
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}
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if desiredSoa == nil {
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desiredSoa = &models.RecordConfig{}
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}
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defaultSoa := &hp.defaultSoa
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// Commented out because this can not happen:
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// if defaultSoa == nil {
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// defaultSoa = &soaValues{}
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// }
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newSOA := soaValues{
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Refresh: firstNonZero(desiredSoa.SoaRefresh, defaultSoa.Refresh, 86400),
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Retry: firstNonZero(desiredSoa.SoaRetry, defaultSoa.Retry, 7200),
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Expire: firstNonZero(desiredSoa.SoaExpire, defaultSoa.Expire, 3600000),
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NegativeTTL: firstNonZero(desiredSoa.SoaMinttl, defaultSoa.NegativeTTL, 900),
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TTL: firstNonZero(desiredSoa.TTL, defaultSoa.TTL, 86400),
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}
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if zone.ZoneConfig.SOAValues != newSOA {
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msg = append(msg, fmt.Sprintf("Updating SOARecord from (%s) to (%s)", soaToString(zone.ZoneConfig.SOAValues), soaToString(newSOA)))
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zone.ZoneConfig.SOAValues = newSOA
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zoneChanged = true
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}
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if desiredSoa.SoaMbox != "" {
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desiredMail := ""
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if desiredSoa.SoaMbox[len(desiredSoa.SoaMbox)-1] != '.' {
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desiredMail = desiredSoa.SoaMbox + "@" + dc.Name
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}
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if desiredMail != "" && zone.ZoneConfig.EmailAddress != desiredMail {
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msg = append(msg, fmt.Sprintf("Changing SOA Mail from %s to %s", zone.ZoneConfig.EmailAddress, desiredMail))
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zone.ZoneConfig.EmailAddress = desiredMail
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zoneChanged = true
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}
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}
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existingAutoDNSSecEnabled := zone.ZoneConfig.DNSSECMode == "automatic"
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desiredAutoDNSSecEnabled := dc.AutoDNSSEC == "on"
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var DNSSecOptions *dnsSecOptions
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var removeDNSSecEntries []dnsSecEntry
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// ensure that publishKsk is set for domains with AutoDNSSec
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if existingAutoDNSSecEnabled && desiredAutoDNSSecEnabled {
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currentDNSSecOptions, err := hp.getDNSSECOptions(zone.ZoneConfig.ID)
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if err != nil {
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return nil, err
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}
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if !currentDNSSecOptions.PublishKSK {
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msg = append(msg, "Enabling publishKsk for AutoDNSSec")
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DNSSecOptions = currentDNSSecOptions
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DNSSecOptions.PublishKSK = true
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zoneChanged = true
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}
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}
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if !existingAutoDNSSecEnabled && desiredAutoDNSSecEnabled {
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msg = append(msg, "Enable AutoDNSSEC")
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DNSSecOptions = &dnsSecOptions{
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NSECMode: "nsec3",
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PublishKSK: true,
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}
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zone.ZoneConfig.DNSSECMode = "automatic"
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zoneChanged = true
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} else if existingAutoDNSSecEnabled && !desiredAutoDNSSecEnabled {
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currentDNSSecOptions, err := hp.getDNSSECOptions(zone.ZoneConfig.ID)
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if err != nil {
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return nil, err
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}
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msg = append(msg, "Disable AutoDNSSEC")
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zone.ZoneConfig.DNSSECMode = "off"
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// Remove auto dnssec keys from domain
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DomainConfig, err := hp.getDomainConfig(dc.Name)
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if err != nil {
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return nil, err
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}
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for _, entry := range DomainConfig.DNSSecEntries {
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for _, autoDNSKey := range currentDNSSecOptions.Keys {
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if entry.KeyData.PublicKey == autoDNSKey.KeyData.PublicKey {
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removeDNSSecEntries = append(removeDNSSecEntries, entry)
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}
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}
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}
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zoneChanged = true
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}
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if !zoneChanged {
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return nil, nil
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}
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corrections = append(corrections, &models.Correction{
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Msg: fmt.Sprintf("\n%s", strings.Join(msg, "\n")),
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F: func() error {
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for i := 0; i < 10; i++ {
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err := hp.updateZone(&zone.ZoneConfig, DNSSecOptions, create, del, mod)
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if err == nil {
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return nil
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}
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// Code:10205 indicates the zone is currently blocked due to a running zone update.
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if !strings.Contains(err.Error(), "Code:10205") {
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return err
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}
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// Exponential back-off retry.
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// Base of 1.8 seemed like a good trade-off, retrying for approximately 45 seconds.
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time.Sleep(time.Duration(math.Pow(1.8, float64(i))) * 100 * time.Millisecond)
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}
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return fmt.Errorf("retry exhaustion: zone blocked for 10 attempts")
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},
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},
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)
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if removeDNSSecEntries != nil {
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correction := &models.Correction{
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Msg: "Removing AutoDNSSEC Keys from Domain",
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F: func() error {
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err := hp.dnsSecKeyModify(dc.Name, nil, removeDNSSecEntries)
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if err != nil {
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return err
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}
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return nil
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},
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}
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corrections = append(corrections, correction)
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}
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return corrections, nil
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}
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func firstNonZero(items ...uint32) uint32 {
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for _, item := range items {
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if item != 0 {
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return item
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}
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}
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return 999
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}
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func (hp *hostingdeProvider) GetRegistrarCorrections(dc *models.DomainConfig) ([]*models.Correction, error) {
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// err := dc.Punycode()
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// if err != nil {
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// return nil, err
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// }
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found, err := hp.getNameservers(dc.Name)
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if err != nil {
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return nil, fmt.Errorf("error getting nameservers: %w", err)
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}
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sort.Strings(found)
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foundNameservers := strings.Join(found, ",")
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expected := []string{}
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for _, ns := range dc.Nameservers {
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expected = append(expected, ns.Name)
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}
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sort.Strings(expected)
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expectedNameservers := strings.Join(expected, ",")
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// We don't care about glued records because we disallowed them
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if foundNameservers != expectedNameservers {
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return []*models.Correction{
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{
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Msg: fmt.Sprintf("Update nameservers %s -> %s", foundNameservers, expectedNameservers),
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F: hp.updateNameservers(expected, dc.Name),
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},
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}, nil
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}
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return nil, nil
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}
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func (hp *hostingdeProvider) EnsureZoneExists(domain string) error {
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_, err := hp.getZoneConfig(domain)
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if err == errZoneNotFound {
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if err := hp.createZone(domain); err != nil {
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return err
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}
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}
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return nil
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}
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func (hp *hostingdeProvider) ListZones() ([]string, error) {
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zcs, err := hp.getAllZoneConfigs()
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if err != nil {
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return nil, err
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}
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zones := make([]string, 0, len(zcs))
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for _, zoneConfig := range zcs {
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zones = append(zones, zoneConfig.Name)
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}
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return zones, nil
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}
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