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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package route | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "io" | ||
| "net/http" | ||
|
|
||
| "github.com/metacubex/mihomo/component/resolver" | ||
|
|
||
| "github.com/go-chi/render" | ||
| ) | ||
|
|
||
| func dohRouter() http.Handler { | ||
| return http.HandlerFunc(dohHandler) | ||
| } | ||
|
|
||
| func dohHandler(w http.ResponseWriter, r *http.Request) { | ||
| if resolver.DefaultResolver == nil { | ||
| render.Status(r, http.StatusInternalServerError) | ||
| render.JSON(w, r, newError("DNS section is disabled")) | ||
| return | ||
| } | ||
|
|
||
| if r.Header.Get("Accept") != "application/dns-message" { | ||
| render.Status(r, http.StatusInternalServerError) | ||
| render.JSON(w, r, newError("invalid accept header")) | ||
| return | ||
| } | ||
|
|
||
| var dnsData []byte | ||
| var err error | ||
| switch r.Method { | ||
| case "GET": | ||
| dnsData, err = base64.RawURLEncoding.DecodeString(r.URL.Query().Get("dns")) | ||
| case "POST": | ||
| if r.Header.Get("Content-Type") != "application/dns-message" { | ||
| render.Status(r, http.StatusInternalServerError) | ||
| render.JSON(w, r, newError("invalid content-type")) | ||
| return | ||
| } | ||
| dnsData, err = io.ReadAll(r.Body) | ||
| _ = r.Body.Close() | ||
| default: | ||
| render.Status(r, http.StatusMethodNotAllowed) | ||
| render.JSON(w, r, newError("method not allowed")) | ||
| return | ||
| } | ||
| if err != nil { | ||
| render.Status(r, http.StatusInternalServerError) | ||
| render.JSON(w, r, newError(err.Error())) | ||
| return | ||
| } | ||
|
|
||
| ctx, cancel := context.WithTimeout(context.Background(), resolver.DefaultDNSTimeout) | ||
| defer cancel() | ||
|
|
||
| dnsData, err = resolver.RelayDnsPacket(ctx, dnsData, dnsData) | ||
| if err != nil { | ||
| render.Status(r, http.StatusInternalServerError) | ||
| render.JSON(w, r, newError(err.Error())) | ||
| return | ||
| } | ||
|
|
||
| render.Status(r, http.StatusOK) | ||
| render.Data(w, r, dnsData) | ||
| } |
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