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feat: enhance OTA upload handling with magic byte checks for image types
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This commit is contained in:
Manuel Weiser 2025-02-20 10:53:23 +01:00
parent 8b2a537b72
commit c857e16de2
1 changed files with 22 additions and 17 deletions
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37
src/ota.cpp
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@ -4,8 +4,14 @@
#include <SPIFFS.h>
#include "commonFS.h"
// Magic byte patterns für verschiedene Image-Typen
const uint8_t FIRMWARE_MAGIC = 0xE9;
const uint8_t ESP_MAGIC = 0xE9;
void handleOTAUpload(AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) {
static size_t contentLength = 0;
static bool isFullImage = false;
static uint32_t currentOffset = 0;
if (!index) {
contentLength = request->contentLength();
@ -16,29 +22,26 @@ void handleOTAUpload(AsyncWebServerRequest *request, String filename, size_t ind
return;
}
// Determine if this is a full image (firmware + SPIFFS) or just firmware
bool isFullImage = (contentLength > 0x3D0000); // SPIFFS starts at 0x3D0000
// Prüfe Magic Byte für Image-Typ
if (data[0] == ESP_MAGIC) {
// Normales Firmware Image oder full.bin
isFullImage = (contentLength > 0x3D0000);
if (isFullImage) {
// For full images, we need to make sure we have enough space and properly partition it
if (!Update.begin(ESP.getFreeSketchSpace(), U_FLASH)) {
Serial.printf("Not enough space for full image: %u bytes required\n", contentLength);
request->send(400, "application/json", "{\"status\":\"error\",\"message\":\"Full image updates are not supported via OTA. Please use USB update for full images.\"}");
return;
}
} else {
// For firmware-only updates
if (!Update.begin(contentLength, U_FLASH)) {
if (!Update.begin(contentLength)) {
Serial.printf("Not enough space: %u required\n", contentLength);
request->send(400, "application/json", "{\"status\":\"error\",\"message\":\"Not enough space available for firmware update\"}");
request->send(400, "application/json", "{\"status\":\"error\",\"message\":\"Not enough space available\"}");
return;
}
}
Serial.println(isFullImage ? "Full image update started" : "Firmware update started");
Serial.println(isFullImage ? "Full image update started" : "Firmware update started");
} else {
request->send(400, "application/json", "{\"status\":\"error\",\"message\":\"Invalid image format\"}");
return;
}
currentOffset = 0;
}
// Write chunk to flash
// Schreibe Daten
if (Update.write(data, len) != len) {
Update.printError(Serial);
String errorMsg = Update.errorString();
@ -46,6 +49,8 @@ void handleOTAUpload(AsyncWebServerRequest *request, String filename, size_t ind
return;
}
currentOffset += len;
if (final) {
if (Update.end(true)) {
Serial.println("Update complete");