97 lines
4.4 KiB
C++
97 lines
4.4 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022-2024 Thomas Basler and others
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*/
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#include "WebApi_webapp.h"
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#include <MD5Builder.h>
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extern const uint8_t file_index_html_start[] asm("_binary_webapp_dist_index_html_gz_start");
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extern const uint8_t file_favicon_ico_start[] asm("_binary_webapp_dist_favicon_ico_start");
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extern const uint8_t file_favicon_png_start[] asm("_binary_webapp_dist_favicon_png_start");
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extern const uint8_t file_zones_json_start[] asm("_binary_webapp_dist_zones_json_gz_start");
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extern const uint8_t file_app_js_start[] asm("_binary_webapp_dist_js_app_js_gz_start");
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extern const uint8_t file_site_webmanifest_start[] asm("_binary_webapp_dist_site_webmanifest_start");
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extern const uint8_t file_index_html_end[] asm("_binary_webapp_dist_index_html_gz_end");
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extern const uint8_t file_favicon_ico_end[] asm("_binary_webapp_dist_favicon_ico_end");
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extern const uint8_t file_favicon_png_end[] asm("_binary_webapp_dist_favicon_png_end");
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extern const uint8_t file_zones_json_end[] asm("_binary_webapp_dist_zones_json_gz_end");
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extern const uint8_t file_app_js_end[] asm("_binary_webapp_dist_js_app_js_gz_end");
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extern const uint8_t file_site_webmanifest_end[] asm("_binary_webapp_dist_site_webmanifest_end");
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void WebApiWebappClass::responseBinaryDataWithETagCache(AsyncWebServerRequest *request, const String &contentType, const String &contentEncoding, const uint8_t *content, size_t len)
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{
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auto md5 = MD5Builder();
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md5.begin();
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md5.add(const_cast<uint8_t *>(content), len);
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md5.calculate();
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String expectedEtag;
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expectedEtag = "\"";
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expectedEtag += md5.toString();
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expectedEtag += "\"";
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bool eTagMatch = false;
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if (request->hasHeader("If-None-Match")) {
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const AsyncWebHeader* h = request->getHeader("If-None-Match");
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eTagMatch = h->value().equals(expectedEtag);
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}
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// begin response 200 or 304
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AsyncWebServerResponse* response;
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if (eTagMatch) {
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response = request->beginResponse(304);
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} else {
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response = request->beginResponse(200, contentType, content, len);
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if (contentEncoding.length() > 0) {
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response->addHeader("Content-Encoding", contentEncoding);
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}
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}
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// HTTP requires cache headers in 200 and 304 to be identical
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response->addHeader("Cache-Control", "public, must-revalidate");
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response->addHeader("ETag", expectedEtag);
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request->send(response);
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}
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void WebApiWebappClass::init(AsyncWebServer& server, Scheduler& scheduler)
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{
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/*
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We don't validate the request header "Accept-Encoding" if gzip compression is supported!
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We just have the gzipped data available - so we ship them!
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*/
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server.on("/", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "text/html", "gzip", file_index_html_start, file_index_html_end - file_index_html_start);
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});
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server.onNotFound([&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "text/html", "gzip", file_index_html_start, file_index_html_end - file_index_html_start);
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});
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server.on("/index.html", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "text/html", "gzip", file_index_html_start, file_index_html_end - file_index_html_start);
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});
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server.on("/favicon.ico", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "image/x-icon", "", file_favicon_ico_start, file_favicon_ico_end - file_favicon_ico_start);
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});
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server.on("/favicon.png", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "image/png", "", file_favicon_png_start, file_favicon_png_end - file_favicon_png_start);
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});
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server.on("/zones.json", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "application/json", "gzip", file_zones_json_start, file_zones_json_end - file_zones_json_start);
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});
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server.on("/site.webmanifest", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "application/json", "", file_site_webmanifest_start, file_site_webmanifest_end - file_site_webmanifest_start);
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});
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server.on("/js/app.js", HTTP_GET, [&](AsyncWebServerRequest* request) {
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responseBinaryDataWithETagCache(request, "text/javascript", "gzip", file_app_js_start, file_app_js_end - file_app_js_start);
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});
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}
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