Meshtastic unified OTA (#9231)

* Initial commit of combined BLE and WiFi OTA

* Incorporate ota_hash in AdminMessage protobuf

* OTA protobuf changes

* Trunk fmt

---------

Co-authored-by: Jake-B <jake-b@users.noreply.github.com>

src/platform/esp32/MeshtasticOTA.cpp

@@ -0,0 +1,98 @@
+#include "MeshtasticOTA.h"
+#include "configuration.h"
+#include <Preferences.h>
+#include <esp_ota_ops.h>
+
+namespace MeshtasticOTA
+{
+
+static const char *nvsNamespace = "MeshtasticOTA";
+static const char *appProjectName = "MeshtasticOTA";
+
+static bool updated = false;
+
+bool isUpdated()
+{
+    return updated;
+}
+
+void initialize()
+{
+    Preferences prefs;
+    prefs.begin(nvsNamespace);
+    if (prefs.getBool("updated")) {
+        LOG_INFO("First boot after OTA update");
+        updated = true;
+        prefs.putBool("updated", false);
+    }
+    prefs.end();
+}
+
+void recoverConfig(meshtastic_Config_NetworkConfig *network)
+{
+    LOG_INFO("Recovering WiFi settings after OTA update");
+
+    Preferences prefs;
+    prefs.begin(nvsNamespace, true);
+    String ssid = prefs.getString("ssid");
+    String psk = prefs.getString("psk");
+    prefs.end();
+
+    network->wifi_enabled = true;
+    strncpy(network->wifi_ssid, ssid.c_str(), sizeof(network->wifi_ssid));
+    strncpy(network->wifi_psk, psk.c_str(), sizeof(network->wifi_psk));
+}
+
+void saveConfig(meshtastic_Config_NetworkConfig *network, meshtastic_OTAMode method, uint8_t *ota_hash)
+{
+    LOG_INFO("Saving WiFi settings for upcoming OTA update");
+
+    Preferences prefs;
+    prefs.begin(nvsNamespace);
+    prefs.putUChar("method", method);
+    prefs.putBytes("ota_hash", ota_hash, 32);
+    prefs.putString("ssid", network->wifi_ssid);
+    prefs.putString("psk", network->wifi_psk);
+    prefs.putBool("updated", false);
+    prefs.end();
+}
+
+const esp_partition_t *getAppPartition()
+{
+    return esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_APP_OTA_1, NULL);
+}
+
+bool getAppDesc(const esp_partition_t *part, esp_app_desc_t *app_desc)
+{
+    if (esp_ota_get_partition_description(part, app_desc) != ESP_OK) {
+        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 trySwitchToOTA()
+{
+    const esp_partition_t *part = getAppPartition();
+    esp_app_desc_t app_desc;
+    if (!getAppDesc(part, &app_desc))
+        return false;
+    if (esp_ota_set_boot_partition(part) != ESP_OK)
+        return false;
+    return true;
+}
+
+const char *getVersion()
+{
+    const esp_partition_t *part = getAppPartition();
+    static esp_app_desc_t app_desc;
+    if (!getAppDesc(part, &app_desc))
+        return "";
+    return app_desc.version;
+}
+
+} // namespace MeshtasticOTA