forked from TrueCloudLab/lego
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
// Package memcached implements an HTTP provider for solving the HTTP-01 challenge using memcached in combination with a webserver.
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package memcached
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import (
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"errors"
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"fmt"
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"path"
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"github.com/go-acme/lego/v4/challenge/http01"
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"github.com/rainycape/memcache"
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)
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// HTTPProvider implements HTTPProvider for `http-01` challenge.
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type HTTPProvider struct {
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hosts []string
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}
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// NewMemcachedProvider returns a HTTPProvider instance with a configured webroot path.
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func NewMemcachedProvider(hosts []string) (*HTTPProvider, error) {
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if len(hosts) == 0 {
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return nil, errors.New("no memcached hosts provided")
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}
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c := &HTTPProvider{
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hosts: hosts,
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}
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return c, nil
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}
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// Present makes the token available at `HTTP01ChallengePath(token)` by creating a file in the given webroot path.
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func (w *HTTPProvider) Present(domain, token, keyAuth string) error {
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var errs []error
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challengePath := path.Join("/", http01.ChallengePath(token))
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for _, host := range w.hosts {
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mc, err := memcache.New(host)
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if err != nil {
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errs = append(errs, err)
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continue
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}
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_ = mc.Add(&memcache.Item{
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Key: challengePath,
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Value: []byte(keyAuth),
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Expiration: 60,
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})
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}
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if len(errs) == len(w.hosts) {
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return fmt.Errorf("unable to store key in any of the memcache hosts: %v", errs)
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}
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return nil
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}
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// CleanUp removes the file created for the challenge.
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func (w *HTTPProvider) CleanUp(domain, token, keyAuth string) error {
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// Memcached will clean up itself, that's what expiration is for.
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return nil
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}
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