Meshtastic OTA (moar)

src/main.cpp

@@ -105,6 +105,43 @@ NRF52Bluetooth *nrf52Bluetooth = nullptr;
 #include <string>
 #endif
 
+#ifdef ARCH_ESP32
+#ifdef DEBUG_PARTITION_TABLE
+#include "esp_partition.h"
+
+void printPartitionTable()
+{
+    printf("\n--- Partition Table ---\n");
+    // Print Column Headers
+    printf("| %-16s | %-4s | %-7s | %-10s | %-10s |\n", "Label", "Type", "Subtype", "Offset", "Size");
+    printf("|------------------|------|---------|------------|------------|\n");
+
+    // Create an iterator to find ALL partitions (Type ANY, Subtype ANY)
+    esp_partition_iterator_t it = esp_partition_find(ESP_PARTITION_TYPE_ANY, ESP_PARTITION_SUBTYPE_ANY, NULL);
+
+    // Loop through the iterator
+    if (it != NULL) {
+        do {
+            const esp_partition_t *part = esp_partition_get(it);
+
+            // Print details: Label, Type (Hex), Subtype (Hex), Offset (Hex), Size (Hex)
+            printf("| %-16s | 0x%02x | 0x%02x    | 0x%08x | 0x%08x |\n", part->label, part->type, part->subtype, part->address,
+                   part->size);
+
+            // Move to next partition
+            it = esp_partition_next(it);
+        } while (it != NULL);
+
+        // Release the iterator memory
+        esp_partition_iterator_release(it);
+    } else {
+        printf("No partitions found.\n");
+    }
+    printf("-----------------------\n");
+}
+#endif // DEBUG_PARTITION_TABLE
+#endif // ARCH_ESP32
+
 #if HAS_BUTTON || defined(ARCH_PORTDUINO)
 #include "input/ButtonThread.h"
 
@@ -648,7 +685,11 @@ void setup()
         sensor_detected = true;
 #endif
     }
-
+#ifdef ARCH_ESP32
+#ifdef DEBUG_PARTITION_TABLE
+    printPartitionTable();
+#endif
+#endif // ARCH_ESP32
 #ifdef ARCH_ESP32
     // Don't init display if we don't have one or we are waking headless due to a timer event
     if (wakeCause == ESP_SLEEP_WAKEUP_TIMER) {

src/modules/AdminModule.cpp

@@ -235,22 +235,46 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
     }
     case meshtastic_AdminMessage_ota_request_tag: {
 #if defined(ARCH_ESP32)
+        LOG_INFO("OTA Requested");
+
         if (r->ota_request.ota_hash.size != 32) {
             suppressRebootBanner = true;
-            LOG_INFO("OTA Failed: Invalid `ota_hash` provided");
+            sendWarningAndLog("Cannot start OTA: Invalid `ota_hash` provided.");
             break;
         }
 
         meshtastic_OTAMode mode = r->ota_request.reboot_ota_mode;
+        const char *mode_name = (mode == METHOD_OTA_BLE ? "BLE" : "WiFi");
+
+        // Check that we have an OTA partition
+        const esp_partition_t *part = MeshtasticOTA::getAppPartition();
+        if (part == NULL) {
+            suppressRebootBanner = true;
+            sendWarningAndLog("Cannot start OTA: Cannot find OTA Loader partition.");
+            break;
+        }
+
+        static esp_app_desc_t app_desc;
+        if (!MeshtasticOTA::getAppDesc(part, &app_desc)) {
+            suppressRebootBanner = true;
+            sendWarningAndLog("Cannot start OTA: Device does have a valid OTA Loader.");
+            break;
+        }
+
+        if (!MeshtasticOTA::checkOTACapability(&app_desc, mode)) {
+            suppressRebootBanner = true;
+            sendWarningAndLog("OTA Loader does not support %s", mode_name);
+            break;
+        }
+
         if (MeshtasticOTA::trySwitchToOTA()) {
-            LOG_INFO("OTA Requested");
             suppressRebootBanner = true;
             if (screen)
                 screen->startFirmwareUpdateScreen();
             MeshtasticOTA::saveConfig(&config.network, mode, r->ota_request.ota_hash.bytes);
-            LOG_INFO("Rebooting to WiFi OTA");
+            sendWarningAndLog("Rebooting to %s OTA", mode_name);
         } else {
-            LOG_INFO("WIFI OTA Failed");
+            sendWarningAndLog("Unable to switch to the OTA partition.");
         }
 #endif
         int s = 1; // Reboot in 1 second, hard coded
@@ -1472,15 +1496,43 @@ void AdminModule::handleSendInputEvent(const meshtastic_AdminMessage_InputEvent
 #endif
 }
 
-void AdminModule::sendWarning(const char *message)
+void AdminModule::sendWarning(const char *format, ...)
 {
     meshtastic_ClientNotification *cn = clientNotificationPool.allocZeroed();
+    if (!cn)
+        return;
+
     cn->level = meshtastic_LogRecord_Level_WARNING;
     cn->time = getValidTime(RTCQualityFromNet);
-    strncpy(cn->message, message, sizeof(cn->message));
+
+    va_list args;
+    va_start(args, format);
+    // Format the arguments directly into the notification object
+    vsnprintf(cn->message, sizeof(cn->message), format, args);
+    va_end(args);
+
     service->sendClientNotification(cn);
 }
 
+void AdminModule::sendWarningAndLog(const char *format, ...)
+{
+    // We need a temporary buffer to hold the formatted text so we can log it
+    // Using 250 bytes as a safe upper limit for typical text notifications
+    char buf[250];
+
+    va_list args;
+    va_start(args, format);
+    vsnprintf(buf, sizeof(buf), format, args);
+    va_end(args);
+
+    LOG_WARN(buf);
+    // 2. Call sendWarning
+    // SECURITY NOTE: We pass "%s", buf instead of just 'buf'.
+    // If 'buf' contained a % symbol (e.g. "Battery 50%"), passing it directly
+    // would crash sendWarning. "%s" treats it purely as text.
+    sendWarning("%s", buf);
+}
+
 void disableBluetooth()
 {
 #if HAS_BLUETOOTH

src/modules/AdminModule.h

@@ -1,7 +1,9 @@
-#include <sys/types.h>
-
 #pragma once
+#ifdef ESP_PLATFORM
+#include <esp_ota_ops.h>
+#endif
 #include "ProtobufModule.h"
+#include <sys/types.h>
 #if HAS_WIFI
 #include "mesh/wifi/WiFiAPClient.h"
 #endif
@@ -71,7 +73,8 @@ class AdminModule : public ProtobufModule<meshtastic_AdminMessage>, public Obser
 
     bool messageIsResponse(const meshtastic_AdminMessage *r);
     bool messageIsRequest(const meshtastic_AdminMessage *r);
-    void sendWarning(const char *message);
+    void sendWarning(const char *format, ...) __attribute__((format(printf, 2, 3)));
+    void sendWarningAndLog(const char *format, ...) __attribute__((format(printf, 2, 3)));
 };
 
 static constexpr const char *licensedModeMessage =

src/platform/esp32/MeshtasticOTA.cpp

@@ -1,13 +1,17 @@
 #include "MeshtasticOTA.h"
 #include "configuration.h"
+#ifdef ESP_PLATFORM
 #include <Preferences.h>
 #include <esp_ota_ops.h>
+#endif
 
 namespace MeshtasticOTA
 {
 
 static const char *nvsNamespace = "MeshtasticOTA";
-static const char *appProjectName = "MeshtasticOTA";
+static const char *combinedAppProjectName = "MeshtasticOTA";
+static const char *bleOnlyAppProjectName = "MeshtasticOTA-BLE";
+static const char *wifiOnlyAppProjectName = "MeshtasticOTA-WiFi";
 
 static bool updated = false;
 
@@ -68,21 +72,44 @@ bool getAppDesc(const esp_partition_t *part, esp_app_desc_t *app_desc)
         LOG_INFO("esp_ota_get_partition_description failed");
         return false;
     }
-    if (strcmp(app_desc->project_name, appProjectName) != 0) {
-        LOG_INFO("app_desc->project_name == 0");
-        return false;
-    }
     return true;
 }
 
+bool checkOTACapability(esp_app_desc_t *app_desc, uint8_t method)
+{
+    // Combined loader supports all (both) transports, BLE and WiFi
+    if (strcmp(app_desc->project_name, combinedAppProjectName) == 0) {
+        LOG_INFO("OTA partition contains combined BLE/WiFi OTA Loader");
+        return true;
+    }
+    if (method == METHOD_OTA_BLE && strcmp(app_desc->project_name, bleOnlyAppProjectName) == 0) {
+        LOG_INFO("OTA partition contains BLE-only OTA Loader");
+        return true;
+    }
+    if (method == METHOD_OTA_WIFI && strcmp(app_desc->project_name, wifiOnlyAppProjectName) == 0) {
+        LOG_INFO("OTA partition contains WiFi-only OTA Loader");
+        return true;
+    }
+    LOG_INFO("OTA partition does not contain a known OTA loader");
+    return false;
+}
+
 bool trySwitchToOTA()
 {
     const esp_partition_t *part = getAppPartition();
-    esp_app_desc_t app_desc;
-    if (!getAppDesc(part, &app_desc))
+
+    if (part == NULL) {
+        LOG_WARN("Unable to get app partition in preparation of OTA reboot");
         return false;
-    if (esp_ota_set_boot_partition(part) != ESP_OK)
+    }
+
+    uint8_t result = esp_ota_set_boot_partition(part);
+    // Partition and app checks should now be done in the AdminModule before this is called
+    if (result != ESP_OK) {
+        LOG_WARN("Unable to switch to OTA partiton.  (Reason %d)", result);
         return false;
+    }
+
     return true;
 }
 

src/platform/esp32/MeshtasticOTA.h

@@ -3,12 +3,20 @@
 
 #include "mesh-pb-constants.h"
 #include <Arduino.h>
+#ifdef ESP_PLATFORM
+#include <esp_ota_ops.h>
+#endif
+
+#define METHOD_OTA_BLE 1
+#define METHOD_OTA_WIFI 2
 
 namespace MeshtasticOTA
 {
 void initialize();
 bool isUpdated();
-
+const esp_partition_t *getAppPartition();
+bool getAppDesc(const esp_partition_t *part, esp_app_desc_t *app_desc);
+bool checkOTACapability(esp_app_desc_t *app_desc, uint8_t method);
 void recoverConfig(meshtastic_Config_NetworkConfig *network);
 void saveConfig(meshtastic_Config_NetworkConfig *network, meshtastic_OTAMode method, uint8_t *ota_hash);
 bool trySwitchToOTA();

variants/esp32c6/m5stack_unitc6l/platformio.ini

@@ -10,6 +10,8 @@ custom_meshtastic_tags = M5Stack
 
 extends = esp32c6_base
 board = esp32-c6-devkitc-1
+board_upload.flash_size = 16MB
+board_build.partitions = default_16MB.csv
 ;OpenOCD flash method
 ;upload_protocol = esp-builtin
 ;Normal method