Gabriel Radureau
ee832de089
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55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package main
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import (
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"crypto/subtle"
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"log"
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"net/http"
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"runtime/debug"
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"time"
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)
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func chain(h http.Handler, mws ...func(http.Handler) http.Handler) http.Handler {
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for i := len(mws) - 1; i >= 0; i-- {
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h = mws[i](h)
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}
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return h
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}
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func recoverMW(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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defer func() {
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if rec := recover(); rec != nil {
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log.Printf("panic %s %s: %v\n%s", r.Method, r.URL.Path, rec, debug.Stack())
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http.Error(w, "internal error", http.StatusInternalServerError)
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}
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}()
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next.ServeHTTP(w, r)
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})
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}
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type statusRecorder struct {
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http.ResponseWriter
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status int
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}
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func (sr *statusRecorder) WriteHeader(code int) {
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sr.status = code
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sr.ResponseWriter.WriteHeader(code)
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}
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func accessLogMW(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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sr := &statusRecorder{ResponseWriter: w, status: http.StatusOK}
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next.ServeHTTP(sr, r)
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log.Printf("%s %s %d %s", r.Method, r.URL.Path, sr.status, time.Since(start))
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})
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}
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func verifyTelegramSecret(provided, expected string) bool {
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if expected == "" {
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return false
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}
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return subtle.ConstantTimeCompare([]byte(provided), []byte(expected)) == 1
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}
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