120 lines
3.4 KiB
Go
120 lines
3.4 KiB
Go
// Package cloudflare implements a DNS provider for solving the DNS-01
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// challenge using cloudflare DNS.
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package cloudflare
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import (
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"errors"
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"fmt"
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"net/http"
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"time"
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"github.com/xenolf/lego/acme"
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"github.com/xenolf/lego/platform/config/env"
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)
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// CloudFlareAPIURL represents the API endpoint to call.
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const CloudFlareAPIURL = defaultBaseURL // Deprecated
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// Config is used to configure the creation of the DNSProvider
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type Config struct {
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AuthEmail string
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AuthKey string
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TTL int
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PropagationTimeout time.Duration
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PollingInterval time.Duration
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HTTPClient *http.Client
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}
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// NewDefaultConfig returns a default configuration for the DNSProvider
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func NewDefaultConfig() *Config {
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return &Config{
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TTL: env.GetOrDefaultInt("CLOUDFLARE_TTL", 120),
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PropagationTimeout: env.GetOrDefaultSecond("CLOUDFLARE_PROPAGATION_TIMEOUT", 2*time.Minute),
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PollingInterval: env.GetOrDefaultSecond("CLOUDFLARE_POLLING_INTERVAL", 2*time.Second),
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HTTPClient: &http.Client{
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Timeout: env.GetOrDefaultSecond("CLOUDFLARE_HTTP_TIMEOUT", 30*time.Second),
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},
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}
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}
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// DNSProvider is an implementation of the acme.ChallengeProvider interface
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type DNSProvider struct {
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client *Client
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config *Config
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}
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// NewDNSProvider returns a DNSProvider instance configured for Cloudflare.
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// Credentials must be passed in the environment variables:
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// CLOUDFLARE_EMAIL and CLOUDFLARE_API_KEY.
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func NewDNSProvider() (*DNSProvider, error) {
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values, err := env.Get("CLOUDFLARE_EMAIL", "CLOUDFLARE_API_KEY")
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if err != nil {
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return nil, fmt.Errorf("cloudflare: %v", err)
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}
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config := NewDefaultConfig()
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config.AuthEmail = values["CLOUDFLARE_EMAIL"]
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config.AuthKey = values["CLOUDFLARE_API_KEY"]
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return NewDNSProviderConfig(config)
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}
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// NewDNSProviderCredentials uses the supplied credentials
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// to return a DNSProvider instance configured for Cloudflare.
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// Deprecated
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func NewDNSProviderCredentials(email, key string) (*DNSProvider, error) {
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config := NewDefaultConfig()
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config.AuthEmail = email
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config.AuthKey = key
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return NewDNSProviderConfig(config)
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}
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// NewDNSProviderConfig return a DNSProvider instance configured for Cloudflare.
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func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
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if config == nil {
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return nil, errors.New("cloudflare: the configuration of the DNS provider is nil")
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}
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client, err := NewClient(config.AuthEmail, config.AuthKey)
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if err != nil {
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return nil, err
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}
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client.HTTPClient = config.HTTPClient
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// TODO: must be remove. keep only for compatibility reason.
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client.BaseURL = CloudFlareAPIURL
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return &DNSProvider{
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client: client,
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config: config,
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}, nil
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}
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// Timeout returns the timeout and interval to use when checking for DNS
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// propagation. Adjusting here to cope with spikes in propagation times.
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func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
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return d.config.PropagationTimeout, d.config.PollingInterval
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}
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// Present creates a TXT record to fulfil the dns-01 challenge
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func (d *DNSProvider) Present(domain, token, keyAuth string) error {
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fqdn, value, _ := acme.DNS01Record(domain, keyAuth)
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rec := TxtRecord{
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Type: "TXT",
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Name: acme.UnFqdn(fqdn),
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Content: value,
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TTL: d.config.TTL,
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}
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return d.client.AddTxtRecord(fqdn, rec)
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}
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// CleanUp removes the TXT record matching the specified parameters
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func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
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fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
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return d.client.RemoveTxtRecord(fqdn)
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}
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