mirror of
https://github.com/caddyserver/caddy.git
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86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package caddyhttp
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import (
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"fmt"
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"net/http"
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"strconv"
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"github.com/caddyserver/caddy/v2"
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)
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func init() {
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caddy.RegisterModule(caddy.Module{
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Name: "http.responders.static",
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New: func() interface{} { return new(Static) },
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})
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}
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// Static implements a simple responder for static responses.
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type Static struct {
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StatusCode int `json:"status_code"` // TODO: should we turn this into a string so that only one field is needed? (string allows replacements)
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StatusCodeStr string `json:"status_code_str"`
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Headers http.Header `json:"headers"`
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Body string `json:"body"`
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Close bool `json:"close"`
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}
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func (s Static) ServeHTTP(w http.ResponseWriter, r *http.Request) error {
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repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
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// close the connection after responding
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r.Close = s.Close
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// set all headers
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for field, vals := range s.Headers {
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field = repl.ReplaceAll(field, "")
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newVals := make([]string, len(vals))
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for i := range vals {
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newVals[i] = repl.ReplaceAll(vals[i], "")
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}
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w.Header()[field] = newVals
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}
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// do not allow Go to sniff the content-type
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if w.Header().Get("Content-Type") == "" {
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w.Header()["Content-Type"] = nil
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}
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// get the status code
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statusCode := s.StatusCode
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if statusCode == 0 && s.StatusCodeStr != "" {
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intVal, err := strconv.Atoi(repl.ReplaceAll(s.StatusCodeStr, ""))
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if err == nil {
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statusCode = intVal
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}
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}
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if statusCode == 0 {
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statusCode = http.StatusOK
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}
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// write headers
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w.WriteHeader(statusCode)
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// write response body
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if s.Body != "" {
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fmt.Fprint(w, repl.ReplaceAll(s.Body, ""))
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}
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return nil
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}
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// Interface guard
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var _ Handler = (*Static)(nil)
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