forked from TrueCloudLab/certificates
77 lines
2 KiB
Go
77 lines
2 KiB
Go
package api
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import (
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"context"
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"net/http"
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"github.com/pkg/errors"
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"github.com/smallstep/certificates/authority/provisioner"
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"golang.org/x/crypto/ssh"
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)
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// SSHRekeyRequest is the request body of an SSH certificate request.
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type SSHRekeyRequest struct {
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OTT string `json:"ott"`
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PublicKey []byte `json:"publicKey"` //base64 encoded
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}
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// Validate validates the SSHSignRekey.
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func (s *SSHRekeyRequest) Validate() error {
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switch {
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case len(s.OTT) == 0:
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return errors.New("missing or empty ott")
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case len(s.PublicKey) == 0:
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return errors.New("missing or empty public key")
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default:
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return nil
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}
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}
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// SSHRekeyResponse is the response object that returns the SSH certificate.
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type SSHRekeyResponse struct {
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Certificate SSHCertificate `json:"crt"`
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}
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// SSHRekey is an HTTP handler that reads an RekeySSHRequest with a one-time-token
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// (ott) from the body and creates a new SSH certificate with the information in
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// the request.
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func (h *caHandler) SSHRekey(w http.ResponseWriter, r *http.Request) {
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var body SSHRekeyRequest
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if err := ReadJSON(r.Body, &body); err != nil {
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WriteError(w, BadRequest(errors.Wrap(err, "error reading request body")))
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return
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}
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logOtt(w, body.OTT)
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if err := body.Validate(); err != nil {
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WriteError(w, BadRequest(err))
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return
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}
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publicKey, err := ssh.ParsePublicKey(body.PublicKey)
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if err != nil {
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WriteError(w, BadRequest(errors.Wrap(err, "error parsing publicKey")))
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return
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}
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ctx := provisioner.NewContextWithMethod(context.Background(), provisioner.RekeySSHMethod)
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signOpts, err := h.Authority.Authorize(ctx, body.OTT)
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if err != nil {
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WriteError(w, Unauthorized(err))
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return
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}
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oldCert, err := provisioner.ExtractSSHPOPCert(body.OTT)
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if err != nil {
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WriteError(w, InternalServerError(err))
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}
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newCert, err := h.Authority.RekeySSH(oldCert, publicKey, signOpts...)
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if err != nil {
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WriteError(w, Forbidden(err))
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return
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}
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JSONStatus(w, &SSHSignResponse{
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Certificate: SSHCertificate{newCert},
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}, http.StatusCreated)
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}
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