Mirror of espurna firmware for wireless switches and more
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/*
Part of the WEBSERVER module
Copyright (C) 2016-2019 by Xose Pérez <xose dot perez at gmail dot com>
Copyright (C) 2020 by Maxim Prokhorov <prokhorov dot max at outlook dot com>
*/
#include "ota.h"
#if WEB_SUPPORT && OTA_WEB_SUPPORT
#include "web.h"
#include "ws.h"
void _onUpgradeResponse(AsyncWebServerRequest *request, int code, const String& payload = "") {
auto *response = request->beginResponseStream("text/plain", 256);
response->addHeader("Connection", "close");
response->addHeader("X-XSS-Protection", "1; mode=block");
response->addHeader("X-Content-Type-Options", "nosniff");
response->addHeader("X-Frame-Options", "deny");
response->setCode(code);
if (payload.length()) {
response->printf("%s", payload.c_str());
} else {
if (!Update.hasError()) {
response->print("OK");
} else {
#if defined(ARDUINO_ESP8266_RELEASE_2_3_0)
Update.printError(reinterpret_cast<Stream&>(response));
#else
Update.printError(*response);
#endif
}
}
request->send(response);
}
void _onUpgradeStatusSet(AsyncWebServerRequest *request, int code, const String& payload = "") {
_onUpgradeResponse(request, code, payload);
request->_tempObject = malloc(sizeof(bool));
}
void _onUpgrade(AsyncWebServerRequest *request) {
webLog(request);
if (!webAuthenticate(request)) {
return request->requestAuthentication(getSetting("hostname").c_str());
}
if (request->_tempObject) {
return;
}
_onUpgradeResponse(request, 200);
}
void _onUpgradeFile(AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) {
if (!webAuthenticate(request)) {
return request->requestAuthentication(getSetting("hostname").c_str());
}
// We set this after we are done with the request
// It is still possible to re-enter this callback even after connection is already closed
// 1.15.0: TODO: see https://github.com/me-no-dev/ESPAsyncWebServer/pull/660
// remote close or request sending some data before finishing parsing of the body will leak 1460 bytes
// waiting a bit for upstream. looks more and more we need to fork the server
if (request->_tempObject) {
return;
}
if (!index) {
// TODO: stop network activity completely when handling Update through ArduinoOTA or `ota` command?
if (Update.isRunning()) {
_onUpgradeStatusSet(request, 400, F("ERROR: Upgrade in progress"));
return;
}
// Check that header is correct and there is more data before anything is written to the flash
if (final || !len) {
_onUpgradeStatusSet(request, 400, F("ERROR: Invalid request"));
return;
}
if (!otaVerifyHeader(data, len)) {
_onUpgradeStatusSet(request, 400, F("ERROR: No magic byte / invalid flash config"));
return;
}
// Disabling EEPROM rotation to prevent writing to EEPROM after the upgrade
eepromRotate(false);
DEBUG_MSG_P(PSTR("[UPGRADE] Start: %s\n"), filename.c_str());
Update.runAsync(true);
// Note: cannot use request->contentLength() for multipart/form-data
if (!Update.begin((ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000)) {
_onUpgradeStatusSet(request, 500);
eepromRotate(true);
return;
}
}
if (request->_tempObject) {
return;
}
// Any error will cancel the update, but request may still be alive
if (!Update.isRunning()) {
return;
}
if (Update.write(data, len) != len) {
_onUpgradeStatusSet(request, 500);
Update.end();
eepromRotate(true);
return;
}
if (final) {
otaFinalize(index + len, CUSTOM_RESET_UPGRADE, true);
} else {
otaProgress(index + len);
}
}
void otaWebSetup() {
webServer()->on("/upgrade", HTTP_POST, _onUpgrade, _onUpgradeFile);
wsRegister().
onVisible([](JsonObject& root) {
root["otaVisible"] = 1;
});
}
#endif // OTA_WEB_SUPPORT