forked from go-acme/lego
/
oraclecloud.go
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oraclecloud.go
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package oraclecloud
import (
"context"
"errors"
"fmt"
"net/http"
"time"
"github.com/go-acme/lego/challenge/dns01"
"github.com/go-acme/lego/platform/config/env"
"github.com/oracle/oci-go-sdk/common"
"github.com/oracle/oci-go-sdk/dns"
)
// Config is used to configure the creation of the DNSProvider
type Config struct {
CompartmentID string
OCIConfigProvider common.ConfigurationProvider
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
TTL: env.GetOrDefaultInt("OCI_TTL", dns01.DefaultTTL),
PropagationTimeout: env.GetOrDefaultSecond("OCI_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("OCI_POLLING_INTERVAL", dns01.DefaultPollingInterval),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond("OCI_HTTP_TIMEOUT", 60*time.Second),
},
}
}
// DNSProvider is an implementation of the acme.ChallengeProvider interface.
type DNSProvider struct {
client *dns.DnsClient
config *Config
}
// NewDNSProvider returns a DNSProvider instance configured for OracleCloud.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get(ociPrivkey, ociTenancyOCID, ociUserOCID, ociPubkeyFingerprint, ociRegion, "OCI_COMPARTMENT_OCID")
if err != nil {
return nil, fmt.Errorf("oraclecloud: %v", err)
}
config := NewDefaultConfig()
config.CompartmentID = values["OCI_COMPARTMENT_OCID"]
config.OCIConfigProvider = newConfigProvider(values)
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for OracleCloud.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("oraclecloud: the configuration of the DNS provider is nil")
}
if config.CompartmentID == "" {
return nil, errors.New("oraclecloud: CompartmentID is missing")
}
if config.OCIConfigProvider == nil {
return nil, errors.New("oraclecloud: OCIConfigProvider is missing")
}
client, err := dns.NewDnsClientWithConfigurationProvider(config.OCIConfigProvider)
if err != nil {
return nil, fmt.Errorf("oraclecloud: %v", err)
}
if config.HTTPClient != nil {
client.HTTPClient = config.HTTPClient
}
return &DNSProvider{client: &client, config: config}, nil
}
// Present creates a TXT record to fulfill the dns-01 challenge
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
// generate request to dns.PatchDomainRecordsRequest
recordOperation := dns.RecordOperation{
Domain: common.String(dns01.UnFqdn(fqdn)),
Rdata: common.String(value),
Rtype: common.String("TXT"),
Ttl: common.Int(d.config.TTL),
IsProtected: common.Bool(false),
}
request := dns.PatchDomainRecordsRequest{
CompartmentId: common.String(d.config.CompartmentID),
ZoneNameOrId: common.String(domain),
Domain: common.String(dns01.UnFqdn(fqdn)),
PatchDomainRecordsDetails: dns.PatchDomainRecordsDetails{
Items: []dns.RecordOperation{recordOperation},
},
}
_, err := d.client.PatchDomainRecords(context.Background(), request)
if err != nil {
return fmt.Errorf("oraclecloud: %v", err)
}
return nil
}
// CleanUp removes the TXT record matching the specified parameters
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
// search to TXT record's hash to delete
getRequest := dns.GetDomainRecordsRequest{
ZoneNameOrId: common.String(domain),
Domain: common.String(dns01.UnFqdn(fqdn)),
CompartmentId: common.String(d.config.CompartmentID),
Rtype: common.String("TXT"),
}
ctx := context.Background()
domainRecords, err := d.client.GetDomainRecords(ctx, getRequest)
if err != nil {
return fmt.Errorf("oraclecloud: %v", err)
}
if *domainRecords.OpcTotalItems == 0 {
return fmt.Errorf("oraclecloud: no record to CleanUp")
}
var deleteHash *string
for _, record := range domainRecords.RecordCollection.Items {
if record.Rdata != nil && *record.Rdata == `"`+value+`"` {
deleteHash = record.RecordHash
break
}
}
if deleteHash == nil {
return fmt.Errorf("oraclecloud: no record to CleanUp")
}
recordOperation := dns.RecordOperation{
RecordHash: deleteHash,
Operation: dns.RecordOperationOperationRemove,
}
patchRequest := dns.PatchDomainRecordsRequest{
ZoneNameOrId: common.String(domain),
Domain: common.String(dns01.UnFqdn(fqdn)),
PatchDomainRecordsDetails: dns.PatchDomainRecordsDetails{
Items: []dns.RecordOperation{recordOperation},
},
CompartmentId: common.String(d.config.CompartmentID),
}
_, err = d.client.PatchDomainRecords(ctx, patchRequest)
if err != nil {
return fmt.Errorf("oraclecloud: %v", err)
}
return 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
}