tailscale/ipn/localapi/cert.go
Brad Fitzpatrick b1248442c3 all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork
Updates #7123
Updates #5309

Change-Id: I90bcd87a2fb85a91834a0dd4be6e03db08438672
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-02-01 15:23:54 -08:00

53 lines
1.4 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build !ios && !android && !js
package localapi
import (
"fmt"
"net/http"
"strings"
"tailscale.com/ipn/ipnlocal"
)
func (h *Handler) serveCert(w http.ResponseWriter, r *http.Request) {
if !h.PermitWrite && !h.PermitCert {
http.Error(w, "cert access denied", http.StatusForbidden)
return
}
domain, ok := strings.CutPrefix(r.URL.Path, "/localapi/v0/cert/")
if !ok {
http.Error(w, "internal handler config wired wrong", 500)
return
}
pair, err := h.b.GetCertPEM(r.Context(), domain)
if err != nil {
// TODO(bradfitz): 500 is a little lazy here. The errors returned from
// GetCertPEM (and everywhere) should carry info info to get whether
// they're 400 vs 403 vs 500 at minimum. And then we should have helpers
// (in tsweb probably) to return an error that looks at the error value
// to determine the HTTP status code.
http.Error(w, fmt.Sprint(err), 500)
return
}
serveKeyPair(w, r, pair)
}
func serveKeyPair(w http.ResponseWriter, r *http.Request, p *ipnlocal.TLSCertKeyPair) {
w.Header().Set("Content-Type", "text/plain")
switch r.URL.Query().Get("type") {
case "", "crt", "cert":
w.Write(p.CertPEM)
case "key":
w.Write(p.KeyPEM)
case "pair":
w.Write(p.KeyPEM)
w.Write(p.CertPEM)
default:
http.Error(w, `invalid type; want "cert" (default), "key", or "pair"`, 400)
}
}