forked from TrueCloudLab/certificates
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package api
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import (
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"crypto/x509"
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"net/http"
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"strings"
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"github.com/smallstep/certificates/api/render"
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"github.com/smallstep/certificates/errs"
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)
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const (
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authorizationHeader = "Authorization"
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bearerScheme = "Bearer"
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)
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// Renew uses the information of certificate in the TLS connection to create a
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// new one.
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func Renew(w http.ResponseWriter, r *http.Request) {
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//nolint:contextcheck // the reqest has the context
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cert, err := getPeerCertificate(r)
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if err != nil {
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render.Error(w, err)
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return
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}
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a := mustAuthority(r.Context())
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certChain, err := a.Renew(cert)
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if err != nil {
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render.Error(w, errs.Wrap(http.StatusInternalServerError, err, "cahandler.Renew"))
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return
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}
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certChainPEM := certChainToPEM(certChain)
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var caPEM Certificate
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if len(certChainPEM) > 1 {
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caPEM = certChainPEM[1]
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}
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LogCertificate(w, certChain[0])
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render.JSONStatus(w, &SignResponse{
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ServerPEM: certChainPEM[0],
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CaPEM: caPEM,
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CertChainPEM: certChainPEM,
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TLSOptions: a.GetTLSOptions(),
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}, http.StatusCreated)
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}
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func getPeerCertificate(r *http.Request) (*x509.Certificate, error) {
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if r.TLS != nil && len(r.TLS.PeerCertificates) > 0 {
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return r.TLS.PeerCertificates[0], nil
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}
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if s := r.Header.Get(authorizationHeader); s != "" {
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if parts := strings.SplitN(s, bearerScheme+" ", 2); len(parts) == 2 {
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ctx := r.Context()
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return mustAuthority(ctx).AuthorizeRenewToken(ctx, parts[1])
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}
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}
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return nil, errs.BadRequest("missing client certificate")
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}
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