pages-server/server/certificates/cached_challengers.go

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package certificates
import (
"fmt"
"net/http"
"net/url"
"strings"
"time"
"github.com/go-acme/lego/v4/challenge"
"github.com/rs/zerolog/log"
"codeberg.org/codeberg/pages/server/cache"
"codeberg.org/codeberg/pages/server/context"
)
type AcmeTLSChallengeProvider struct {
challengeCache cache.SetGetKey
}
// make sure AcmeTLSChallengeProvider match Provider interface
var _ challenge.Provider = AcmeTLSChallengeProvider{}
func (a AcmeTLSChallengeProvider) Present(domain, _, keyAuth string) error {
return a.challengeCache.Set(domain, keyAuth, 1*time.Hour)
}
func (a AcmeTLSChallengeProvider) CleanUp(domain, _, _ string) error {
a.challengeCache.Remove(domain)
return nil
}
type AcmeHTTPChallengeProvider struct {
challengeCache cache.SetGetKey
}
// make sure AcmeHTTPChallengeProvider match Provider interface
var _ challenge.Provider = AcmeHTTPChallengeProvider{}
func (a AcmeHTTPChallengeProvider) Present(domain, token, keyAuth string) error {
return a.challengeCache.Set(domain+"/"+token, keyAuth, 1*time.Hour)
}
func (a AcmeHTTPChallengeProvider) CleanUp(domain, token, _ string) error {
a.challengeCache.Remove(domain + "/" + token)
return nil
}
func SetupHTTPACMEChallengeServer(challengeCache cache.SetGetKey, sslPort uint) http.HandlerFunc {
// handle custom-ssl-ports to be added on https redirects
portPart := ""
if sslPort != 443 {
portPart = fmt.Sprintf(":%d", sslPort)
}
return func(w http.ResponseWriter, req *http.Request) {
ctx := context.New(w, req)
domain := ctx.TrimHostPort()
// it's an acme request
if strings.HasPrefix(ctx.Path(), challengePath) {
challenge, ok := challengeCache.Get(domain + "/" + strings.TrimPrefix(ctx.Path(), challengePath))
if !ok || challenge == nil {
log.Info().Msgf("HTTP-ACME challenge for '%s' failed: token not found", domain)
ctx.String("no challenge for this token", http.StatusNotFound)
}
log.Info().Msgf("HTTP-ACME challenge for '%s' succeeded", domain)
ctx.String(challenge.(string))
return
}
// it's a normal http request that needs to be redirected
u, err := url.Parse(fmt.Sprintf("https://%s%s%s", domain, portPart, ctx.Path()))
if err != nil {
log.Error().Err(err).Msg("could not craft http to https redirect")
ctx.String("", http.StatusInternalServerError)
}
newURL := u.String()
log.Debug().Msgf("redirect http to https: %s", newURL)
ctx.Redirect(newURL, http.StatusMovedPermanently)
}
}