diff options
Diffstat (limited to 'ipn/ipnlocal/peerapi.go')
| -rw-r--r-- | ipn/ipnlocal/peerapi.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/ipn/ipnlocal/peerapi.go b/ipn/ipnlocal/peerapi.go index 2e180afbf..75bb53ee7 100644 --- a/ipn/ipnlocal/peerapi.go +++ b/ipn/ipnlocal/peerapi.go @@ -12,6 +12,7 @@ import ( "html" "io" "io/fs" + "io/ioutil" "net" "net/http" "net/url" @@ -500,6 +501,10 @@ func (h *peerAPIHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { h.handlePeerPut(w, r) return } + if r.URL.Path == "/v0/doh" { + h.handleDoH(w, r) + return + } if r.URL.Path == "/v0/goroutines" { h.handleServeGoroutines(w, r) return @@ -710,3 +715,32 @@ func (h *peerAPIHandler) handleServeGoroutines(w http.ResponseWriter, r *http.Re } w.Write(buf) } + +func (h *peerAPIHandler) handleDoH(w http.ResponseWriter, r *http.Request) { + if r.Method != "POST" { + http.Error(w, "only POST is support for DNS-over-HTTP", http.StatusMethodNotAllowed) + return + } + const dohType = "application/dns-message" + if r.Header.Get("Content-Type") != dohType { + http.Error(w, fmt.Sprintf("Content-Type=%q; want %q", r.Header.Get("Content-Type"), dohType), http.StatusBadRequest) + return + } + r.Body = http.MaxBytesReader(w, r.Body, 1<<20) + bs, err := ioutil.ReadAll(r.Body) + if err != nil { + http.Error(w, "read body: "+err.Error(), http.StatusInternalServerError) + return + } + + res, err := h.ps.b.DNSManager().Request(r.Context(), bs) + if err != nil { + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + w.Header().Set("Content-Type", dohType) + w.Header().Set("Content-Length", strconv.FormatInt(int64(len(res)), 10)) + w.WriteHeader(200) + w.Write(res) +} |