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) }