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package api
import (
"net/http"
"github.com/smallstep/certificates/api/read"
"github.com/smallstep/certificates/api/render"
"github.com/smallstep/certificates/errs"
)
// RekeyRequest is the request body for a certificate rekey request.
type RekeyRequest struct {
CsrPEM CertificateRequest `json:"csr"`
}
// Validate checks the fields of the RekeyRequest and returns nil if they are ok
// or an error if something is wrong.
func (s *RekeyRequest) Validate() error {
if s.CsrPEM.CertificateRequest == nil {
return errs.BadRequest("missing csr")
}
if err := s.CsrPEM.CertificateRequest.CheckSignature(); err != nil {
return errs.BadRequestErr(err, "invalid csr")
}
return nil
}
// Rekey is similar to renew except that the certificate will be renewed with new key from csr.
func Rekey(w http.ResponseWriter, r *http.Request) {
if r.TLS == nil || len(r.TLS.PeerCertificates) == 0 {
render.Error(w, errs.BadRequest("missing client certificate"))
return
}
var body RekeyRequest
if err := read.JSON(r.Body, &body); err != nil {
render.Error(w, errs.BadRequestErr(err, "error reading request body"))
return
}
if err := body.Validate(); err != nil {
render.Error(w, err)
return
}
a := mustAuthority(r.Context())
certChain, err := a.Rekey(r.TLS.PeerCertificates[0], body.CsrPEM.CertificateRequest.PublicKey)
if err != nil {
render.Error(w, errs.Wrap(http.StatusInternalServerError, err, "cahandler.Rekey"))
return
}
certChainPEM := certChainToPEM(certChain)
var caPEM Certificate
if len(certChainPEM) > 1 {
caPEM = certChainPEM[1]
}
LogCertificate(w, certChain[0])
render.JSONStatus(w, &SignResponse{
ServerPEM: certChainPEM[0],
CaPEM: caPEM,
CertChainPEM: certChainPEM,
TLSOptions: a.GetTLSOptions(),
}, http.StatusCreated)
}
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