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package api
import (
"crypto/tls"
"encoding/json"
"net/http"
"github.com/smallstep/certificates/api/read"
"github.com/smallstep/certificates/api/render"
"github.com/smallstep/certificates/authority/config"
"github.com/smallstep/certificates/authority/provisioner"
"github.com/smallstep/certificates/errs"
)
// SignRequest is the request body for a certificate signature request.
type SignRequest struct {
CsrPEM CertificateRequest `json:"csr"`
OTT string `json:"ott"`
NotAfter TimeDuration `json:"notAfter,omitempty"`
NotBefore TimeDuration `json:"notBefore,omitempty"`
TemplateData json.RawMessage `json:"templateData,omitempty"`
}
// Validate checks the fields of the SignRequest and returns nil if they are ok
// or an error if something is wrong.
func (s *SignRequest) 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")
}
if s.OTT == "" {
return errs.BadRequest("missing ott")
}
return nil
}
// SignResponse is the response object of the certificate signature request.
type SignResponse struct {
ServerPEM Certificate `json:"crt"`
CaPEM Certificate `json:"ca"`
CertChainPEM []Certificate `json:"certChain"`
TLSOptions *config.TLSOptions `json:"tlsOptions,omitempty"`
TLS *tls.ConnectionState `json:"-"`
}
// Sign is an HTTP handler that reads a certificate request and an
// one-time-token (ott) from the body and creates a new certificate with the
// information in the certificate request.
func Sign(w http.ResponseWriter, r *http.Request) {
var body SignRequest
if err := read.JSON(r.Body, &body); err != nil {
render.Error(w, errs.BadRequestErr(err, "error reading request body"))
return
}
logOtt(w, body.OTT)
if err := body.Validate(); err != nil {
render.Error(w, err)
return
}
opts := provisioner.SignOptions{
NotBefore: body.NotBefore,
NotAfter: body.NotAfter,
TemplateData: body.TemplateData,
}
ctx := r.Context()
a := mustAuthority(ctx)
ctx = provisioner.NewContextWithMethod(ctx, provisioner.SignMethod)
signOpts, err := a.Authorize(ctx, body.OTT)
if err != nil {
render.Error(w, errs.UnauthorizedErr(err))
return
}
certChain, err := a.Sign(body.CsrPEM.CertificateRequest, opts, signOpts...)
if err != nil {
render.Error(w, errs.ForbiddenErr(err, "error signing certificate"))
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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