Function addHTTPVarsToReplacer

modules/caddyhttp/replacer.go:58–404

(repl *caddy.Replacer, req *http.Request, w http.ResponseWriter)

}

func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.ResponseWriter) {
	SetVar(req.Context(), "start_time", time.Now())
	SetVar(req.Context(), "uuid", new(requestID))

	httpVars := func(key string) (any, bool) {
		if req != nil {
			// query string parameters
			if strings.HasPrefix(key, reqURIQueryReplPrefix) {
				vals := req.URL.Query()[key[len(reqURIQueryReplPrefix):]]
				// always return true, since the query param might
				// be present only in some requests
				return strings.Join(vals, ","), true
			}

			// request header fields
			if strings.HasPrefix(key, reqHeaderReplPrefix) {
				field := key[len(reqHeaderReplPrefix):]
				vals := req.Header[textproto.CanonicalMIMEHeaderKey(field)]
				// always return true, since the header field might
				// be present only in some requests
				return strings.Join(vals, ","), true
			}

			// cookies
			if strings.HasPrefix(key, reqCookieReplPrefix) {
				name := key[len(reqCookieReplPrefix):]
				for _, cookie := range req.Cookies() {
					if strings.EqualFold(name, cookie.Name) {
						// always return true, since the cookie might
						// be present only in some requests
						return cookie.Value, true
					}
				}
			}

			// http.request.tls.*
			if strings.HasPrefix(key, reqTLSReplPrefix) {
				return getReqTLSReplacement(req, key)
			}

			switch key {
			case "http.request.method":
				return req.Method, true
			case "http.request.scheme":
				if req.TLS != nil {
					return "https", true
				}
				return "http", true
			case "http.request.proto":
				return req.Proto, true
			case "http.request.host":
				host, _, err := net.SplitHostPort(req.Host)
				if err != nil {
					return req.Host, true // OK; there probably was no port
				}
				return host, true
			case "http.request.port":
				_, port, _ := net.SplitHostPort(req.Host)