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// Package webroot implements a HTTP provider for solving the HTTP-01 challenge using web server's root path.
package webroot
import (
"fmt"
"io/ioutil"
"os"
"path"
"github.com/xenolf/lego/acme"
)
// HTTPProvider implements ChallengeProvider for `http-01` challenge
type HTTPProvider struct {
path string
}
// NewHTTPProvider returns a HTTPProvider instance with a configured webroot path
func NewHTTPProvider(path string) (*HTTPProvider, error) {
if _, err := os.Stat(path); os.IsNotExist(err) {
return nil, fmt.Errorf("Webroot path does not exist")
}
c := &HTTPProvider{
path: path,
}
return c, nil
}
// Present makes the token available at `HTTP01ChallengePath(token)` by creating a file in the given webroot path
func (w *HTTPProvider) Present(domain, token, keyAuth string) error {
var err error
challengeFilePath := path.Join(w.path, acme.HTTP01ChallengePath(token))
err = os.MkdirAll(path.Dir(challengeFilePath), 0755)
if err != nil {
return fmt.Errorf("Could not create required directories in webroot for HTTP challenge -> %v", err)
}
err = ioutil.WriteFile(challengeFilePath, []byte(keyAuth), 0644)
if err != nil {
return fmt.Errorf("Could not write file in webroot for HTTP challenge -> %v", err)
}
return nil
}
// CleanUp removes the file created for the challenge
func (w *HTTPProvider) CleanUp(domain, token, keyAuth string) error {
var err error
err = os.Remove(path.Join(w.path, acme.HTTP01ChallengePath(token)))
if err != nil {
return fmt.Errorf("Could not remove file in webroot after HTTP challenge -> %v", err)
}
return nil
}
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