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// Package crl implements the HTTP handler for the crl command.
package crl
import (
"crypto"
"crypto/x509"
"net/http"
"os"
"time"
"github.com/cloudflare/cfssl/api"
"github.com/cloudflare/cfssl/certdb"
"github.com/cloudflare/cfssl/crl"
"github.com/cloudflare/cfssl/errors"
"github.com/cloudflare/cfssl/helpers"
"github.com/cloudflare/cfssl/log"
)
// A Handler accepts requests with a serial number parameter
// and revokes
type Handler struct {
dbAccessor certdb.Accessor
ca *x509.Certificate
key crypto.Signer
}
// NewHandler returns a new http.Handler that handles a revoke request.
func NewHandler(dbAccessor certdb.Accessor, caPath string, caKeyPath string) (http.Handler, error) {
ca, err := helpers.ReadBytes(caPath)
if err != nil {
return nil, err
}
caKey, err := helpers.ReadBytes(caKeyPath)
if err != nil {
return nil, errors.Wrap(errors.PrivateKeyError, errors.ReadFailed, err)
}
// Parse the PEM encoded certificate
issuerCert, err := helpers.ParseCertificatePEM(ca)
if err != nil {
return nil, err
}
strPassword := os.Getenv("CFSSL_CA_PK_PASSWORD")
password := []byte(strPassword)
if strPassword == "" {
password = nil
}
// Parse the key given
key, err := helpers.ParsePrivateKeyPEMWithPassword(caKey, password)
if err != nil {
log.Debugf("malformed private key %v", err)
return nil, err
}
return &api.HTTPHandler{
Handler: &Handler{
dbAccessor: dbAccessor,
ca: issuerCert,
key: key,
},
Methods: []string{"GET"},
}, nil
}
// Handle responds to revocation requests. It attempts to revoke
// a certificate with a given serial number
func (h *Handler) Handle(w http.ResponseWriter, r *http.Request) error {
var newExpiryTime = 7 * helpers.OneDay
certs, err := h.dbAccessor.GetRevokedAndUnexpiredCertificates()
if err != nil {
return err
}
queryExpiryTime := r.URL.Query().Get("expiry")
if queryExpiryTime != "" {
log.Infof("requested expiry time of %s", queryExpiryTime)
newExpiryTime, err = time.ParseDuration(queryExpiryTime)
if err != nil {
return err
}
}
result, err := crl.NewCRLFromDB(certs, h.ca, h.key, newExpiryTime)
if err != nil {
return err
}
return api.SendResponse(w, result)
}
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