WLED/wled00/wled_server.cpp
Blaz Kristan 432c5837f0 Bugfix
- WiFi power for Lolin S2 & C3 (use -DLOLIN_WIFI_FIX)
- web response buffer size (corruption when websockets not used)
2023-04-30 17:30:36 +02:00

640 lines
23 KiB
C++

#include "wled.h"
#include "html_ui.h"
#ifdef WLED_ENABLE_SIMPLE_UI
#include "html_simple.h"
#endif
#include "html_settings.h"
#include "html_other.h"
#ifdef WLED_ENABLE_PIXART
#include "html_pixart.h"
#endif
/*
* Integrated HTTP web server page declarations
*/
bool handleIfNoneMatchCacheHeader(AsyncWebServerRequest* request);
void setStaticContentCacheHeaders(AsyncWebServerResponse *response);
// define flash strings once (saves flash memory)
static const char s_redirecting[] PROGMEM = "Redirecting...";
static const char s_content_enc[] PROGMEM = "Content-Encoding";
static const char s_unlock_ota [] PROGMEM = "Please unlock OTA in security settings!";
static const char s_unlock_cfg [] PROGMEM = "Please unlock settings using PIN code!";
//Is this an IP?
bool isIp(String str) {
for (size_t i = 0; i < str.length(); i++) {
int c = str.charAt(i);
if (c != '.' && (c < '0' || c > '9')) {
return false;
}
}
return true;
}
void handleUpload(AsyncWebServerRequest *request, const String& filename, size_t index, uint8_t *data, size_t len, bool final) {
if (!correctPIN) {
if (final) request->send(500, "text/plain", FPSTR(s_unlock_cfg));
return;
}
if (!index) {
String finalname = filename;
if (finalname.charAt(0) != '/') {
finalname = '/' + finalname; // prepend slash if missing
}
request->_tempFile = WLED_FS.open(finalname, "w");
DEBUG_PRINT(F("Uploading "));
DEBUG_PRINTLN(finalname);
if (finalname.equals("/presets.json")) presetsModifiedTime = toki.second();
}
if (len) {
request->_tempFile.write(data,len);
}
if (final) {
request->_tempFile.close();
if (filename.indexOf(F("cfg.json")) >= 0) { // check for filename with or without slash
doReboot = true;
request->send(200, "text/plain", F("Configuration restore successful.\nRebooting..."));
} else
request->send(200, "text/plain", F("File Uploaded!"));
cacheInvalidate++;
}
}
void createEditHandler(bool enable) {
if (editHandler != nullptr) server.removeHandler(editHandler);
if (enable) {
#ifdef WLED_ENABLE_FS_EDITOR
#ifdef ARDUINO_ARCH_ESP32
editHandler = &server.addHandler(new SPIFFSEditor(WLED_FS));//http_username,http_password));
#else
editHandler = &server.addHandler(new SPIFFSEditor("","",WLED_FS));//http_username,http_password));
#endif
#else
editHandler = &server.on("/edit", HTTP_GET, [](AsyncWebServerRequest *request){
serveMessage(request, 501, "Not implemented", F("The FS editor is disabled in this build."), 254);
});
#endif
} else {
editHandler = &server.on("/edit", HTTP_ANY, [](AsyncWebServerRequest *request){
serveMessage(request, 500, "Access Denied", FPSTR(s_unlock_cfg), 254);
});
}
}
bool captivePortal(AsyncWebServerRequest *request)
{
if (ON_STA_FILTER(request)) return false; //only serve captive in AP mode
String hostH;
if (!request->hasHeader("Host")) return false;
hostH = request->getHeader("Host")->value();
if (!isIp(hostH) && hostH.indexOf("wled.me") < 0 && hostH.indexOf(cmDNS) < 0) {
DEBUG_PRINTLN("Captive portal");
AsyncWebServerResponse *response = request->beginResponse(302);
response->addHeader(F("Location"), F("http://4.3.2.1"));
request->send(response);
return true;
}
return false;
}
void initServer()
{
//CORS compatiblity
DefaultHeaders::Instance().addHeader(F("Access-Control-Allow-Origin"), "*");
DefaultHeaders::Instance().addHeader(F("Access-Control-Allow-Methods"), "*");
DefaultHeaders::Instance().addHeader(F("Access-Control-Allow-Headers"), "*");
#ifdef WLED_ENABLE_WEBSOCKETS
server.on("/liveview", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_liveviewws, PAGE_liveviewws_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
//request->send_P(200, "text/html", PAGE_liveviewws);
});
#ifndef WLED_DISABLE_2D
server.on("/liveview2D", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_liveviewws2D, PAGE_liveviewws2D_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
//request->send_P(200, "text/html", PAGE_liveviewws);
});
#endif
#else
server.on("/liveview", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_liveview, PAGE_liveview_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
//request->send_P(200, "text/html", PAGE_liveview);
});
#endif
//settings page
server.on("/settings", HTTP_GET, [](AsyncWebServerRequest *request){
serveSettings(request);
});
// "/settings/settings.js&p=x" request also handled by serveSettings()
server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/css", PAGE_settingsCss, PAGE_settingsCss_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
});
server.on("/favicon.ico", HTTP_GET, [](AsyncWebServerRequest *request){
if(!handleFileRead(request, "/favicon.ico"))
{
request->send_P(200, "image/x-icon", favicon, 156);
}
});
server.on("/sliders", HTTP_GET, [](AsyncWebServerRequest *request){
serveIndex(request);
});
server.on("/welcome", HTTP_GET, [](AsyncWebServerRequest *request){
serveSettings(request);
});
server.on("/reset", HTTP_GET, [](AsyncWebServerRequest *request){
serveMessage(request, 200,F("Rebooting now..."),F("Please wait ~10 seconds..."),129);
doReboot = true;
});
server.on("/settings", HTTP_POST, [](AsyncWebServerRequest *request){
serveSettings(request, true);
});
server.on("/json", HTTP_GET, [](AsyncWebServerRequest *request){
serveJson(request);
});
AsyncCallbackJsonWebHandler* handler = new AsyncCallbackJsonWebHandler("/json", [](AsyncWebServerRequest *request) {
bool verboseResponse = false;
bool isConfig = false;
if (!requestJSONBufferLock(14)) return;
DeserializationError error = deserializeJson(doc, (uint8_t*)(request->_tempObject));
JsonObject root = doc.as<JsonObject>();
if (error || root.isNull()) {
releaseJSONBufferLock();
request->send(400, "application/json", F("{\"error\":9}"));
return;
}
const String& url = request->url();
isConfig = url.indexOf("cfg") > -1;
if (!isConfig) {
/*
#ifdef WLED_DEBUG
DEBUG_PRINTLN(F("Serialized HTTP"));
serializeJson(root,Serial);
DEBUG_PRINTLN();
#endif
*/
verboseResponse = deserializeState(root);
} else {
verboseResponse = deserializeConfig(root); //use verboseResponse to determine whether cfg change should be saved immediately
}
releaseJSONBufferLock();
if (verboseResponse) {
if (!isConfig) {
serveJson(request); return; //if JSON contains "v"
} else {
doSerializeConfig = true; //serializeConfig(); //Save new settings to FS
}
}
request->send(200, "application/json", F("{\"success\":true}"));
}, JSON_BUFFER_SIZE);
server.addHandler(handler);
server.on("/version", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", (String)VERSION);
});
server.on("/uptime", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", (String)millis());
});
server.on("/freeheap", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", (String)ESP.getFreeHeap());
});
server.on("/u", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_usermod, PAGE_usermod_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
//request->send_P(200, "text/html", PAGE_usermod);
});
//Deprecated, use of /json/state and presets recommended instead
server.on("/url", HTTP_GET, [](AsyncWebServerRequest *request){
URL_response(request);
});
server.on("/teapot", HTTP_GET, [](AsyncWebServerRequest *request){
serveMessage(request, 418, F("418. I'm a teapot."), F("(Tangible Embedded Advanced Project Of Twinkling)"), 254);
});
server.on("/upload", HTTP_POST, [](AsyncWebServerRequest *request) {},
[](AsyncWebServerRequest *request, const String& filename, size_t index, uint8_t *data,
size_t len, bool final) {handleUpload(request, filename, index, data, len, final);}
);
#ifdef WLED_ENABLE_SIMPLE_UI
server.on("/simple.htm", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleFileRead(request, "/simple.htm")) return;
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_simple, PAGE_simple_L);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
});
#endif
server.on("/iro.js", HTTP_GET, [](AsyncWebServerRequest *request){
AsyncWebServerResponse *response = request->beginResponse_P(200, "application/javascript", iroJs, iroJs_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
});
server.on("/rangetouch.js", HTTP_GET, [](AsyncWebServerRequest *request){
AsyncWebServerResponse *response = request->beginResponse_P(200, "application/javascript", rangetouchJs, rangetouchJs_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
});
createEditHandler(correctPIN);
#ifndef WLED_DISABLE_OTA
//init ota page
server.on("/update", HTTP_GET, [](AsyncWebServerRequest *request){
if (otaLock) {
serveMessage(request, 500, "Access Denied", FPSTR(s_unlock_ota), 254);
} else
serveSettings(request); // checks for "upd" in URL and handles PIN
});
server.on("/update", HTTP_POST, [](AsyncWebServerRequest *request){
if (!correctPIN) {
serveSettings(request, true); // handle PIN page POST request
return;
}
if (Update.hasError() || otaLock) {
serveMessage(request, 500, F("Update failed!"), F("Please check your file and retry!"), 254);
} else {
serveMessage(request, 200, F("Update successful!"), F("Rebooting..."), 131);
doReboot = true;
}
},[](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final){
if (!correctPIN || otaLock) return;
if(!index){
DEBUG_PRINTLN(F("OTA Update Start"));
WLED::instance().disableWatchdog();
usermods.onUpdateBegin(true); // notify usermods that update is about to begin (some may require task de-init)
lastEditTime = millis(); // make sure PIN does not lock during update
#ifdef ESP8266
Update.runAsync(true);
#endif
Update.begin((ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000);
}
if(!Update.hasError()) Update.write(data, len);
if(final){
if(Update.end(true)){
DEBUG_PRINTLN(F("Update Success"));
} else {
DEBUG_PRINTLN(F("Update Failed"));
usermods.onUpdateBegin(false); // notify usermods that update has failed (some may require task init)
WLED::instance().enableWatchdog();
}
}
});
#else
server.on("/update", HTTP_GET, [](AsyncWebServerRequest *request){
serveMessage(request, 501, "Not implemented", F("OTA updating is disabled in this build."), 254);
});
#endif
#ifdef WLED_ENABLE_DMX
server.on("/dmxmap", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/html", PAGE_dmxmap , dmxProcessor);
});
#else
server.on("/dmxmap", HTTP_GET, [](AsyncWebServerRequest *request){
serveMessage(request, 501, "Not implemented", F("DMX support is not enabled in this build."), 254);
});
#endif
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
if (captivePortal(request)) return;
serveIndexOrWelcome(request);
});
#ifdef WLED_ENABLE_PIXART
server.on("/pixart.htm", HTTP_GET, [](AsyncWebServerRequest *request){
if (handleFileRead(request, "/pixart.htm")) return;
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", PAGE_pixart, PAGE_pixart_L);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
});
#endif
#ifdef WLED_ENABLE_WEBSOCKETS
server.addHandler(&ws);
#endif
//called when the url is not defined here, ajax-in; get-settings
server.onNotFound([](AsyncWebServerRequest *request){
DEBUG_PRINTLN("Not-Found HTTP call:");
DEBUG_PRINTLN("URI: " + request->url());
if (captivePortal(request)) return;
//make API CORS compatible
if (request->method() == HTTP_OPTIONS)
{
AsyncWebServerResponse *response = request->beginResponse(200);
response->addHeader(F("Access-Control-Max-Age"), F("7200"));
request->send(response);
return;
}
if(handleSet(request, request->url())) return;
#ifndef WLED_DISABLE_ALEXA
if(espalexa.handleAlexaApiCall(request)) return;
#endif
if(handleFileRead(request, request->url())) return;
AsyncWebServerResponse *response = request->beginResponse_P(404, "text/html", PAGE_404, PAGE_404_length);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
//request->send_P(404, "text/html", PAGE_404);
});
}
void serveIndexOrWelcome(AsyncWebServerRequest *request)
{
if (!showWelcomePage){
serveIndex(request);
} else {
serveSettings(request);
}
}
bool handleIfNoneMatchCacheHeader(AsyncWebServerRequest* request)
{
AsyncWebHeader* header = request->getHeader("If-None-Match");
if (header && header->value() == String(VERSION)) {
request->send(304);
return true;
}
return false;
}
void setStaticContentCacheHeaders(AsyncWebServerResponse *response)
{
char tmp[12];
// https://medium.com/@codebyamir/a-web-developers-guide-to-browser-caching-cc41f3b73e7c
#ifndef WLED_DEBUG
//this header name is misleading, "no-cache" will not disable cache,
//it just revalidates on every load using the "If-None-Match" header with the last ETag value
response->addHeader(F("Cache-Control"),"no-cache");
#else
response->addHeader(F("Cache-Control"),"no-store,max-age=0"); // prevent caching if debug build
#endif
sprintf_P(tmp, PSTR("%8d-%02x"), VERSION, cacheInvalidate);
response->addHeader(F("ETag"), tmp);
}
void serveIndex(AsyncWebServerRequest* request)
{
if (handleFileRead(request, "/index.htm")) return;
if (handleIfNoneMatchCacheHeader(request)) return;
AsyncWebServerResponse *response;
#ifdef WLED_ENABLE_SIMPLE_UI
if (simplifiedUI)
response = request->beginResponse_P(200, "text/html", PAGE_simple, PAGE_simple_L);
else
#endif
response = request->beginResponse_P(200, "text/html", PAGE_index, PAGE_index_L);
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
}
String msgProcessor(const String& var)
{
if (var == "MSG") {
String messageBody = messageHead;
messageBody += F("</h2>");
messageBody += messageSub;
uint32_t optt = optionType;
if (optt < 60) //redirect to settings after optionType seconds
{
messageBody += F("<script>setTimeout(RS,");
messageBody +=String(optt*1000);
messageBody += F(")</script>");
} else if (optt < 120) //redirect back after optionType-60 seconds, unused
{
//messageBody += "<script>setTimeout(B," + String((optt-60)*1000) + ")</script>";
} else if (optt < 180) //reload parent after optionType-120 seconds
{
messageBody += F("<script>setTimeout(RP,");
messageBody += String((optt-120)*1000);
messageBody += F(")</script>");
} else if (optt == 253)
{
messageBody += F("<br><br><form action=/settings><button class=\"bt\" type=submit>Back</button></form>"); //button to settings
} else if (optt == 254)
{
messageBody += F("<br><br><button type=\"button\" class=\"bt\" onclick=\"B()\">Back</button>");
}
return messageBody;
}
return String();
}
void serveMessage(AsyncWebServerRequest* request, uint16_t code, const String& headl, const String& subl, byte optionT)
{
messageHead = headl;
messageSub = subl;
optionType = optionT;
request->send_P(code, "text/html", PAGE_msg, msgProcessor);
}
#ifdef WLED_ENABLE_DMX
String dmxProcessor(const String& var)
{
String mapJS;
#ifdef WLED_ENABLE_DMX
if (var == "DMXVARS") {
mapJS += "\nCN=" + String(DMXChannels) + ";\n";
mapJS += "CS=" + String(DMXStart) + ";\n";
mapJS += "CG=" + String(DMXGap) + ";\n";
mapJS += "LC=" + String(strip.getLengthTotal()) + ";\n";
mapJS += "var CH=[";
for (int i=0;i<15;i++) {
mapJS += String(DMXFixtureMap[i]) + ",";
}
mapJS += "0];";
}
#endif
return mapJS;
}
#endif
void serveSettingsJS(AsyncWebServerRequest* request)
{
char buf[SETTINGS_STACK_BUF_SIZE+37];
buf[0] = 0;
byte subPage = request->arg(F("p")).toInt();
if (subPage > 10) {
strcpy_P(buf, PSTR("alert('Settings for this request are not implemented.');"));
request->send(501, "application/javascript", buf);
return;
}
if (subPage > 0 && !correctPIN && strlen(settingsPIN)>0) {
strcpy_P(buf, PSTR("alert('PIN incorrect.');"));
request->send(403, "application/javascript", buf);
return;
}
strcat_P(buf,PSTR("function GetV(){var d=document;"));
getSettingsJS(subPage, buf+strlen(buf)); // this may overflow by 35bytes!!!
strcat_P(buf,PSTR("}"));
request->send(200, "application/javascript", buf);
}
void serveSettings(AsyncWebServerRequest* request, bool post)
{
byte subPage = 0, originalSubPage = 0;
const String& url = request->url();
if (url.indexOf("sett") >= 0)
{
if (url.indexOf(".js") > 0) subPage = 254;
else if (url.indexOf(".css") > 0) subPage = 253;
else if (url.indexOf("wifi") > 0) subPage = 1;
else if (url.indexOf("leds") > 0) subPage = 2;
else if (url.indexOf("ui") > 0) subPage = 3;
else if (url.indexOf("sync") > 0) subPage = 4;
else if (url.indexOf("time") > 0) subPage = 5;
else if (url.indexOf("sec") > 0) subPage = 6;
else if (url.indexOf("dmx") > 0) subPage = 7;
else if (url.indexOf("um") > 0) subPage = 8;
else if (url.indexOf("2D") > 0) subPage = 10;
else if (url.indexOf("lock") > 0) subPage = 251;
}
else if (url.indexOf("/update") >= 0) subPage = 9; // update page, for PIN check
//else if (url.indexOf("/edit") >= 0) subPage = 10;
else subPage = 255; // welcome page
if (!correctPIN && strlen(settingsPIN) > 0 && (subPage > 0 && subPage < 11)) {
originalSubPage = subPage;
subPage = 252; // require PIN
}
// if OTA locked or too frequent PIN entry requests fail hard
if ((subPage == 1 && wifiLock && otaLock) || (post && !correctPIN && millis()-lastEditTime < 3000))
{
serveMessage(request, 500, "Access Denied", FPSTR(s_unlock_ota), 254); return;
}
if (post) { //settings/set POST request, saving
if (subPage != 1 || !(wifiLock && otaLock)) handleSettingsSet(request, subPage);
char s[32];
char s2[45] = "";
switch (subPage) {
case 1: strcpy_P(s, PSTR("WiFi")); strcpy_P(s2, PSTR("Please connect to the new IP (if changed)")); forceReconnect = true; break;
case 2: strcpy_P(s, PSTR("LED")); break;
case 3: strcpy_P(s, PSTR("UI")); break;
case 4: strcpy_P(s, PSTR("Sync")); break;
case 5: strcpy_P(s, PSTR("Time")); break;
case 6: strcpy_P(s, PSTR("Security")); if (doReboot) strcpy_P(s2, PSTR("Rebooting, please wait ~10 seconds...")); break;
case 7: strcpy_P(s, PSTR("DMX")); break;
case 8: strcpy_P(s, PSTR("Usermods")); break;
case 10: strcpy_P(s, PSTR("2D")); break;
case 252: strcpy_P(s, correctPIN ? PSTR("PIN accepted") : PSTR("PIN rejected")); break;
}
if (subPage == 252) {
createEditHandler(correctPIN);
} else
strcat_P(s, PSTR(" settings saved."));
if (subPage == 252 && correctPIN) {
subPage = originalSubPage; // on correct PIN load settings page the user intended
} else {
if (!s2[0]) strcpy_P(s2, s_redirecting);
serveMessage(request, 200, s, s2, (subPage == 1 || (subPage == 6 && doReboot)) ? 129 : (correctPIN ? 1 : 3));
return;
}
}
AsyncWebServerResponse *response;
switch (subPage)
{
case 1: response = request->beginResponse_P(200, "text/html", PAGE_settings_wifi, PAGE_settings_wifi_length); break;
case 2: response = request->beginResponse_P(200, "text/html", PAGE_settings_leds, PAGE_settings_leds_length); break;
case 3: response = request->beginResponse_P(200, "text/html", PAGE_settings_ui, PAGE_settings_ui_length); break;
case 4: response = request->beginResponse_P(200, "text/html", PAGE_settings_sync, PAGE_settings_sync_length); break;
case 5: response = request->beginResponse_P(200, "text/html", PAGE_settings_time, PAGE_settings_time_length); break;
case 6: response = request->beginResponse_P(200, "text/html", PAGE_settings_sec, PAGE_settings_sec_length); break;
#ifdef WLED_ENABLE_DMX
case 7: response = request->beginResponse_P(200, "text/html", PAGE_settings_dmx, PAGE_settings_dmx_length); break;
#endif
case 8: response = request->beginResponse_P(200, "text/html", PAGE_settings_um, PAGE_settings_um_length); break;
case 9: response = request->beginResponse_P(200, "text/html", PAGE_update, PAGE_update_length); break;
#ifndef WLED_DISABLE_2D
case 10: response = request->beginResponse_P(200, "text/html", PAGE_settings_2D, PAGE_settings_2D_length); break;
#endif
case 251: {
correctPIN = !strlen(settingsPIN); // lock if a pin is set
createEditHandler(correctPIN);
serveMessage(request, 200, strlen(settingsPIN) > 0 ? PSTR("Settings locked") : PSTR("No PIN set"), FPSTR(s_redirecting), 1);
return;
}
case 252: response = request->beginResponse_P(200, "text/html", PAGE_settings_pin, PAGE_settings_pin_length); break;
case 253: response = request->beginResponse_P(200, "text/css", PAGE_settingsCss, PAGE_settingsCss_length); break;
case 254: serveSettingsJS(request); return;
case 255: response = request->beginResponse_P(200, "text/html", PAGE_welcome, PAGE_welcome_length); break;
default: response = request->beginResponse_P(200, "text/html", PAGE_settings, PAGE_settings_length); break;
}
response->addHeader(FPSTR(s_content_enc),"gzip");
setStaticContentCacheHeaders(response);
request->send(response);
}