firmware/src/modules/AdminModule.cpp

#include "AdminModule.h"
#include "Channels.h"
#include "MeshService.h"
#include "NodeDB.h"
#include "PowerFSM.h"
#include "RTC.h"
#include "SPILock.h"
#include "input/InputBroker.h"
#include "meshUtils.h"
#include <FSCommon.h>
#include <ctype.h> // for better whitespace handling
#if defined(ARCH_ESP32) && !MESHTASTIC_EXCLUDE_WIFI
#include "MeshtasticOTA.h"
#endif
#include "Router.h"
#include "configuration.h"
#include "main.h"
#ifdef ARCH_NRF52
#include "main.h"
#endif
#ifdef ARCH_PORTDUINO
#include "unistd.h"
#endif

#include "Default.h"
#include "MeshRadio.h"
#include "RadioInterface.h"
#include "TypeConversions.h"
#include "mesh/RadioLibInterface.h"

#if !MESHTASTIC_EXCLUDE_MQTT
#include "mqtt/MQTT.h"
#endif

#if !MESHTASTIC_EXCLUDE_GPS
#include "GPS.h"
#endif

#if MESHTASTIC_EXCLUDE_GPS
#include "modules/PositionModule.h"
#endif

#if !defined(ARCH_STM32WL) && !MESHTASTIC_EXCLUDE_I2C && !MESHTASTIC_EXCLUDE_ACCELEROMETER
#include "motion/AccelerometerThread.h"
#endif
#if (defined(ARCH_ESP32) || defined(ARCH_NRF52) || defined(ARCH_RP2040)) && !defined(CONFIG_IDF_TARGET_ESP32S2) &&               \
    !defined(CONFIG_IDF_TARGET_ESP32C3)
#include "SerialModule.h"
#endif

AdminModule *adminModule;
bool hasOpenEditTransaction;

/// A special reserved string to indicate strings we can not share with external nodes.  We will use this 'reserved' word instead.
/// Also, to make setting work correctly, if someone tries to set a string to this reserved value we assume they don't really want
/// a change.
static const char *secretReserved = "sekrit";

/// If buf is the reserved secret word, replace the buffer with currentVal
static void writeSecret(char *buf, size_t bufsz, const char *currentVal)
{
    if (strcmp(buf, secretReserved) == 0) {
        strncpy(buf, currentVal, bufsz);
    }
}

/**
 * @brief Handle received protobuf message
 *
 * @param mp Received MeshPacket
 * @param r Decoded AdminMessage
 * @return bool
 */
bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshtastic_AdminMessage *r)
{
    // if handled == false, then let others look at this message also if they want
    bool handled = false;
    assert(r);
    bool fromOthers = !isFromUs(&mp);
    if (mp.which_payload_variant != meshtastic_MeshPacket_decoded_tag) {
        return handled;
    }
    meshtastic_Channel *ch = &channels.getByIndex(mp.channel);
    // Could tighten this up further by tracking the last public_key we went an AdminMessage request to
    // and only allowing responses from that remote.
    if (messageIsResponse(r)) {
        LOG_DEBUG("Allow admin response message");
    } else if (mp.from == 0) {
        if (config.security.is_managed) {
            LOG_INFO("Ignore local admin payload because is_managed");
            return handled;
        }
    } else if (strcasecmp(ch->settings.name, Channels::adminChannel) == 0) {
        if (!config.security.admin_channel_enabled) {
            LOG_INFO("Ignore admin channel, legacy admin is disabled");
            myReply = allocErrorResponse(meshtastic_Routing_Error_NOT_AUTHORIZED, &mp);
            return handled;
        }
    } else if (mp.pki_encrypted) {
        if ((config.security.admin_key[0].size == 32 &&
             memcmp(mp.public_key.bytes, config.security.admin_key[0].bytes, 32) == 0) ||
            (config.security.admin_key[1].size == 32 &&
             memcmp(mp.public_key.bytes, config.security.admin_key[1].bytes, 32) == 0) ||
            (config.security.admin_key[2].size == 32 &&
             memcmp(mp.public_key.bytes, config.security.admin_key[2].bytes, 32) == 0)) {
            LOG_INFO("PKC admin payload with authorized sender key");

            // Automatically favorite the node that is using the admin key
            auto remoteNode = nodeDB->getMeshNode(mp.from);
            if (remoteNode && !remoteNode->is_favorite) {
                if (config.device.role == meshtastic_Config_DeviceConfig_Role_CLIENT_BASE) {
                    // Special case for CLIENT_BASE: is_favorite has special meaning, and we don't want to automatically set it
                    // without the user doing so deliberately.
                    LOG_INFO("PKC admin valid, but not auto-favoriting node %x because role==CLIENT_BASE", mp.from);
                } else {
                    LOG_INFO("PKC admin valid. Auto-favoriting node %x", mp.from);
                    remoteNode->is_favorite = true;
                }
            }
        } else {
            myReply = allocErrorResponse(meshtastic_Routing_Error_ADMIN_PUBLIC_KEY_UNAUTHORIZED, &mp);
            LOG_INFO("Received PKC admin payload, but the sender public key does not match the admin authorized key!");
            return handled;
        }
    } else {
        LOG_INFO("Ignore unauthorized admin payload %i", r->which_payload_variant);
        myReply = allocErrorResponse(meshtastic_Routing_Error_NOT_AUTHORIZED, &mp);
        return handled;
    }

    LOG_INFO("Handle admin payload %i", r->which_payload_variant);

    // all of the get and set messages, including those for other modules, flow through here first.
    // any message that changes state, we want to check the passkey for
    if (mp.from != 0 && !messageIsRequest(r) && !messageIsResponse(r)) {
        if (!checkPassKey(r)) {
            LOG_WARN("Admin message without session_key!");
            myReply = allocErrorResponse(meshtastic_Routing_Error_ADMIN_BAD_SESSION_KEY, &mp);
            return handled;
        }
    }
    switch (r->which_payload_variant) {

    /**
     * Getters
     */
    case meshtastic_AdminMessage_get_owner_request_tag:
        LOG_DEBUG("Client got owner");
        handleGetOwner(mp);
        break;

    case meshtastic_AdminMessage_get_config_request_tag:
        LOG_DEBUG("Client got config");
        handleGetConfig(mp, r->get_config_request);
        break;

    case meshtastic_AdminMessage_get_module_config_request_tag:
        LOG_DEBUG("Client got module config");
        handleGetModuleConfig(mp, r->get_module_config_request);
        break;

    case meshtastic_AdminMessage_get_channel_request_tag: {
        uint32_t i = r->get_channel_request - 1;
        LOG_DEBUG("Client got channel %u", i);
        if (i >= MAX_NUM_CHANNELS)
            myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        else
            handleGetChannel(mp, i);
        break;
    }

    /**
     * Setters
     */
    case meshtastic_AdminMessage_set_owner_tag:
        LOG_DEBUG("Client set owner");
        // Validate names
        if (*r->set_owner.long_name) {
            const char *start = r->set_owner.long_name;
            // Skip all whitespace (space, tab, newline, etc)
            while (*start && isspace((unsigned char)*start))
                start++;
            if (*start == '\0') {
                LOG_WARN("Rejected long_name: must contain at least 1 non-whitespace character");
                myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
                break;
            }
        }
        if (*r->set_owner.short_name) {
            const char *start = r->set_owner.short_name;
            while (*start && isspace((unsigned char)*start))
                start++;
            if (*start == '\0') {
                LOG_WARN("Rejected short_name: must contain at least 1 non-whitespace character");
                myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
                break;
            }
        }
        handleSetOwner(r->set_owner);
        break;

    case meshtastic_AdminMessage_set_config_tag: {
        LOG_DEBUG("Client set config");

        // Non-LoRa configs need no further validation.
        if (r->set_config.which_payload_variant != meshtastic_Config_lora_tag) {
            LOG_DEBUG("Non-LoRa config, applying directly");
            handleSetConfig(r->set_config, fromOthers);
            break;
        }

        // Only LORA_24 requires hardware capability validation.
        if (r->set_config.payload_variant.lora.region != meshtastic_Config_LoRaConfig_RegionCode_LORA_24) {
            LOG_DEBUG("LoRa config, region is not LORA_24, applying directly");
            handleSetConfig(r->set_config, fromOthers);
            break;
        }

        // Hardware supports 2.4 GHz — apply the config.
        // Fail closed: null instance is treated as incapable.
        if (RadioLibInterface::instance && RadioLibInterface::instance->wideLora()) {
            LOG_DEBUG("LORA_24 requested, radio hardware supports 2.4 GHz, applying");
            handleSetConfig(r->set_config, fromOthers);
            break;
        }

        LOG_WARN("Radio hardware does not support 2.4 GHz; rejecting LORA_24 region");
        myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        break;
    }

    case meshtastic_AdminMessage_set_module_config_tag:
        LOG_DEBUG("Client set module config");
        if (!handleSetModuleConfig(r->set_module_config)) {
            myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        }
        break;

    case meshtastic_AdminMessage_set_channel_tag:
        LOG_DEBUG("Client set channel %d", r->set_channel.index);
        if (r->set_channel.index < 0 || r->set_channel.index >= (int)MAX_NUM_CHANNELS)
            myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        else
            handleSetChannel(r->set_channel);
        break;
    case meshtastic_AdminMessage_set_ham_mode_tag:
        LOG_DEBUG("Client set ham mode");
        handleSetHamMode(r->set_ham_mode);
        break;
    case meshtastic_AdminMessage_get_ui_config_request_tag: {
        LOG_DEBUG("Client is getting device-ui config");
        handleGetDeviceUIConfig(mp);
        handled = true;
        break;
    }

    /**
     * Other
     */
    case meshtastic_AdminMessage_reboot_seconds_tag: {
        reboot(r->reboot_seconds);
        break;
    }
    case meshtastic_AdminMessage_ota_request_tag: {
#if defined(ARCH_ESP32)
        LOG_INFO("OTA Requested");

        if (r->ota_request.ota_hash.size != 32) {
            suppressRebootBanner = true;
            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()) {
            suppressRebootBanner = true;
            if (screen)
                screen->startFirmwareUpdateScreen();
            MeshtasticOTA::saveConfig(&config.network, mode, r->ota_request.ota_hash.bytes);
            sendWarningAndLog("Rebooting to %s OTA", mode_name);
        } else {
            sendWarningAndLog("Unable to switch to the OTA partition.");
        }
#endif
        int s = 1; // Reboot in 1 second, hard coded
        LOG_INFO("Reboot in %d seconds", s);
        rebootAtMsec = (s < 0) ? 0 : (millis() + s * 1000);
        break;
    }
    case meshtastic_AdminMessage_shutdown_seconds_tag: {
        int32_t s = r->shutdown_seconds;
        LOG_INFO("Shutdown in %d seconds", s);
        shutdownAtMsec = (s < 0) ? 0 : (millis() + s * 1000);
        break;
    }
    case meshtastic_AdminMessage_get_device_metadata_request_tag: {
        LOG_INFO("Client got device metadata");
        handleGetDeviceMetadata(mp);
        break;
    }
    case meshtastic_AdminMessage_factory_reset_config_tag: {
        disableBluetooth();
        LOG_INFO("Initiate factory config reset");
        nodeDB->factoryReset();
        LOG_INFO("Factory config reset finished, rebooting soon");
        reboot(DEFAULT_REBOOT_SECONDS);
        break;
    }
    case meshtastic_AdminMessage_factory_reset_device_tag: {
        disableBluetooth();
        LOG_INFO("Initiate full factory reset");
        nodeDB->factoryReset(true);
        reboot(DEFAULT_REBOOT_SECONDS);
        break;
    }
    case meshtastic_AdminMessage_nodedb_reset_tag: {
        disableBluetooth();
        LOG_INFO("Initiate node-db reset");
        //  CLIENT_BASE, ROUTER and ROUTER_LATE are able to preserve the remaining hop count when relaying a packet via a
        //  favorited node, so ensure that their favorites are kept on reset
        bool rolePreference =
            isOneOf(config.device.role, meshtastic_Config_DeviceConfig_Role_CLIENT_BASE,
                    meshtastic_Config_DeviceConfig_Role_ROUTER, meshtastic_Config_DeviceConfig_Role_ROUTER_LATE);
        nodeDB->resetNodes(rolePreference ? rolePreference : r->nodedb_reset);
        reboot(DEFAULT_REBOOT_SECONDS);
        break;
    }
    case meshtastic_AdminMessage_store_ui_config_tag: {
        LOG_INFO("Storing device-ui config");
        handleStoreDeviceUIConfig(r->store_ui_config);
        handled = true;
        break;
    }
    case meshtastic_AdminMessage_begin_edit_settings_tag: {
        LOG_INFO("Begin transaction for editing settings");
        hasOpenEditTransaction = true;
        break;
    }
    case meshtastic_AdminMessage_commit_edit_settings_tag: {
        disableBluetooth();
        LOG_INFO("Commit transaction for edited settings");
        hasOpenEditTransaction = false;
        saveChanges(SEGMENT_CONFIG | SEGMENT_MODULECONFIG | SEGMENT_DEVICESTATE | SEGMENT_CHANNELS | SEGMENT_NODEDATABASE);
        break;
    }
    case meshtastic_AdminMessage_get_device_connection_status_request_tag: {
        LOG_INFO("Client got device connection status");
        handleGetDeviceConnectionStatus(mp);
        break;
    }
    case meshtastic_AdminMessage_get_module_config_response_tag: {
        LOG_INFO("Client received a get_module_config response");
        if (fromOthers && r->get_module_config_response.which_payload_variant ==
                              meshtastic_AdminMessage_ModuleConfigType_REMOTEHARDWARE_CONFIG) {
            handleGetModuleConfigResponse(mp, r);
        }
        break;
    }
    case meshtastic_AdminMessage_remove_by_nodenum_tag: {
        LOG_INFO("Client received remove_nodenum command");
        nodeDB->removeNodeByNum(r->remove_by_nodenum);
        break;
    }
    case meshtastic_AdminMessage_add_contact_tag: {
        LOG_INFO("Client received add_contact command");
        nodeDB->addFromContact(r->add_contact);
        break;
    }
    case meshtastic_AdminMessage_set_favorite_node_tag: {
        LOG_INFO("Client received set_favorite_node command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->set_favorite_node);
        if (node != NULL) {
            node->is_favorite = true;
            saveChanges(SEGMENT_NODEDATABASE, false);
            if (screen)
                screen->setFrames(graphics::Screen::FOCUS_PRESERVE); // <-- Rebuild screens
        }
        break;
    }
    case meshtastic_AdminMessage_remove_favorite_node_tag: {
        LOG_INFO("Client received remove_favorite_node command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->remove_favorite_node);
        if (node != NULL) {
            node->is_favorite = false;
            saveChanges(SEGMENT_NODEDATABASE, false);
            if (screen)
                screen->setFrames(graphics::Screen::FOCUS_PRESERVE); // <-- Rebuild screens
        }
        break;
    }
    case meshtastic_AdminMessage_set_ignored_node_tag: {
        LOG_INFO("Client received set_ignored_node command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->set_ignored_node);
        if (node != NULL) {
            node->is_ignored = true;
            node->has_device_metrics = false;
            node->has_position = false;
            node->user.public_key.size = 0;
            memset(node->user.public_key.bytes, 0, sizeof(node->user.public_key.bytes));
            saveChanges(SEGMENT_NODEDATABASE, false);
        }
        break;
    }
    case meshtastic_AdminMessage_remove_ignored_node_tag: {
        LOG_INFO("Client received remove_ignored_node command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->remove_ignored_node);
        if (node != NULL) {
            node->is_ignored = false;
            saveChanges(SEGMENT_NODEDATABASE, false);
        }
        break;
    }
    case meshtastic_AdminMessage_toggle_muted_node_tag: {
        LOG_INFO("Client received toggle_muted_node command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->toggle_muted_node);
        if (node != NULL) {
            node->bitfield ^= (1 << NODEINFO_BITFIELD_IS_MUTED_SHIFT);
            saveChanges(SEGMENT_NODEDATABASE, false);
        }
        break;
    }

    case meshtastic_AdminMessage_set_fixed_position_tag: {
        LOG_INFO("Client received set_fixed_position command");
        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
        node->has_position = true;
        node->position = TypeConversions::ConvertToPositionLite(r->set_fixed_position);
        nodeDB->setLocalPosition(r->set_fixed_position);
        config.position.fixed_position = true;
        saveChanges(SEGMENT_NODEDATABASE | SEGMENT_CONFIG, false);
#if !MESHTASTIC_EXCLUDE_GPS
        if (gps != nullptr)
            gps->enable();
        // Send our new fixed position to the mesh for good measure
        positionModule->sendOurPosition();
#endif
        break;
    }
    case meshtastic_AdminMessage_remove_fixed_position_tag: {
        LOG_INFO("Client received remove_fixed_position command");
        nodeDB->clearLocalPosition();
        config.position.fixed_position = false;
        saveChanges(SEGMENT_NODEDATABASE | SEGMENT_CONFIG, false);
        break;
    }
    case meshtastic_AdminMessage_set_time_only_tag: {
        LOG_INFO("Client received set_time_only command");
        struct timeval tv;
        tv.tv_sec = r->set_time_only;
        tv.tv_usec = 0;

        perhapsSetRTC(RTCQualityNTP, &tv, false);
        break;
    }
    case meshtastic_AdminMessage_enter_dfu_mode_request_tag: {
        LOG_INFO("Client requesting to enter DFU mode");
#if HAS_SCREEN
        IF_SCREEN(screen->showSimpleBanner("Device is rebooting\ninto DFU mode.", 0));
#endif
#if defined(ARCH_NRF52) || defined(ARCH_RP2040) || defined(ARCH_STM32WL)
        enterDfuMode();
#endif
        break;
    }
    case meshtastic_AdminMessage_delete_file_request_tag: {
        LOG_DEBUG("Client requesting to delete file: %s", r->delete_file_request);

#ifdef FSCom
        spiLock->lock();
        if (FSCom.remove(r->delete_file_request)) {
            LOG_DEBUG("Successfully deleted file");
        } else {
            LOG_DEBUG("Failed to delete file");
        }
        spiLock->unlock();
#endif
        break;
    }
    case meshtastic_AdminMessage_backup_preferences_tag: {
        LOG_INFO("Client requesting to backup preferences");
        if (nodeDB->backupPreferences(r->backup_preferences)) {
            myReply = allocErrorResponse(meshtastic_Routing_Error_NONE, &mp);
        } else {
            myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        }
        break;
    }
    case meshtastic_AdminMessage_restore_preferences_tag: {
        LOG_INFO("Client requesting to restore preferences");
        if (nodeDB->restorePreferences(r->backup_preferences,
                                       SEGMENT_DEVICESTATE | SEGMENT_CONFIG | SEGMENT_MODULECONFIG | SEGMENT_CHANNELS)) {
            myReply = allocErrorResponse(meshtastic_Routing_Error_NONE, &mp);
            LOG_DEBUG("Rebooting after successful restore of preferences");
            reboot(1000);
            disableBluetooth();
        } else {
            myReply = allocErrorResponse(meshtastic_Routing_Error_BAD_REQUEST, &mp);
        }
        break;
    }
    case meshtastic_AdminMessage_remove_backup_preferences_tag: {
        LOG_INFO("Client requesting to remove backup preferences");
#ifdef FSCom
        if (r->remove_backup_preferences == meshtastic_AdminMessage_BackupLocation_FLASH) {
            spiLock->lock();
            FSCom.remove(backupFileName);
            spiLock->unlock();
        } else if (r->remove_backup_preferences == meshtastic_AdminMessage_BackupLocation_SD) {
            // TODO: After more mainline SD card support
            LOG_ERROR("SD backup removal not implemented yet");
        }
#endif
        break;
    }
    case meshtastic_AdminMessage_send_input_event_tag: {
        LOG_INFO("Client requesting to send input event");
        handleSendInputEvent(r->send_input_event);
        break;
    }
#ifdef ARCH_PORTDUINO
    case meshtastic_AdminMessage_exit_simulator_tag:
        LOG_INFO("Exiting simulator");
        exit(0);
        break;
#endif

    default:
        meshtastic_AdminMessage res = meshtastic_AdminMessage_init_default;
        AdminMessageHandleResult handleResult = MeshModule::handleAdminMessageForAllModules(mp, r, &res);

        if (handleResult == AdminMessageHandleResult::HANDLED_WITH_RESPONSE) {
            setPassKey(&res);
            myReply = allocDataProtobuf(res);
        } else if (mp.decoded.want_response) {
            LOG_DEBUG("Module API did not respond to admin message. req.variant=%d", r->which_payload_variant);
        } else if (handleResult != AdminMessageHandleResult::HANDLED) {
            // Probably a message sent by us or sent to our local node.  FIXME, we should avoid scanning these messages
            LOG_DEBUG("Module API did not handle admin message %d", r->which_payload_variant);
        }
        break;
    }

    // Allow any observers (e.g. the UI) to handle/respond
    AdminMessageHandleResult observerResult = AdminMessageHandleResult::NOT_HANDLED;
    meshtastic_AdminMessage observerResponse = meshtastic_AdminMessage_init_default;
    AdminModule_ObserverData observerData = {
        .request = r,
        .response = &observerResponse,
        .result = &observerResult,
    };

    notifyObservers(&observerData);

    if (observerResult == AdminMessageHandleResult::HANDLED_WITH_RESPONSE) {
        setPassKey(&observerResponse);
        myReply = allocDataProtobuf(observerResponse);
        LOG_DEBUG("Observer responded to admin message");
    } else if (observerResult == AdminMessageHandleResult::HANDLED) {
        LOG_DEBUG("Observer handled admin message");
    }

    // If asked for a response and it is not yet set, generate an 'ACK' response
    if (mp.decoded.want_response && !myReply) {
        myReply = allocErrorResponse(meshtastic_Routing_Error_NONE, &mp);
    }
    if (mp.pki_encrypted && myReply) {
        myReply->pki_encrypted = true;
    }
    return handled;
}

void AdminModule::handleGetModuleConfigResponse(const meshtastic_MeshPacket &mp, meshtastic_AdminMessage *r)
{
    // Skip if it's disabled or no pins are exposed
    if (!r->get_module_config_response.payload_variant.remote_hardware.enabled ||
        r->get_module_config_response.payload_variant.remote_hardware.available_pins_count == 0) {
        LOG_DEBUG("Remote hardware module disabled or no available_pins. Skip");
        return;
    }
    for (uint8_t i = 0; i < devicestate.node_remote_hardware_pins_count; i++) {
        if (devicestate.node_remote_hardware_pins[i].node_num == 0 || !devicestate.node_remote_hardware_pins[i].has_pin) {
            continue;
        }
        for (uint8_t j = 0; j < r->get_module_config_response.payload_variant.remote_hardware.available_pins_count; j++) {
            auto availablePin = r->get_module_config_response.payload_variant.remote_hardware.available_pins[j];
            if (i < devicestate.node_remote_hardware_pins_count) {
                devicestate.node_remote_hardware_pins[i].node_num = mp.from;
                devicestate.node_remote_hardware_pins[i].pin = availablePin;
            }
            i++;
        }
    }
}

/**
 * Setter methods
 */

void AdminModule::handleSetOwner(const meshtastic_User &o)
{
    int changed = 0;

    if (*o.long_name) {
        changed |= strcmp(owner.long_name, o.long_name);
        strncpy(owner.long_name, o.long_name, sizeof(owner.long_name));
        owner.long_name[sizeof(owner.long_name) - 1] = '\0';
        sanitizeUtf8(owner.long_name, sizeof(owner.long_name));
    }
    if (*o.short_name) {
        changed |= strcmp(owner.short_name, o.short_name);
        strncpy(owner.short_name, o.short_name, sizeof(owner.short_name));
        owner.short_name[sizeof(owner.short_name) - 1] = '\0';
        sanitizeUtf8(owner.short_name, sizeof(owner.short_name));
    }
    snprintf(owner.id, sizeof(owner.id), "!%08x", nodeDB->getNodeNum());

    if (owner.is_licensed != o.is_licensed) {
        changed = 1;
        owner.is_licensed = o.is_licensed;
        if (channels.ensureLicensedOperation()) {
            sendWarning(licensedModeMessage);
        }
    }
    if (owner.has_is_unmessagable != o.has_is_unmessagable ||
        (o.has_is_unmessagable && owner.is_unmessagable != o.is_unmessagable)) {
        changed = 1;
        owner.has_is_unmessagable = owner.has_is_unmessagable || o.has_is_unmessagable;
        owner.is_unmessagable = o.is_unmessagable;
    }

    if (changed) { // If nothing really changed, don't broadcast on the network or write to flash
        service->reloadOwner(!hasOpenEditTransaction);
        saveChanges(SEGMENT_DEVICESTATE | SEGMENT_NODEDATABASE);
    }
}

void AdminModule::handleSetConfig(const meshtastic_Config &c, bool fromOthers)
{
    auto changes = SEGMENT_CONFIG;
    auto existingRole = config.device.role;
    bool isRegionUnset = (config.lora.region == meshtastic_Config_LoRaConfig_RegionCode_UNSET);
    bool requiresReboot = true;

    switch (c.which_payload_variant) {
    case meshtastic_Config_device_tag:
        LOG_INFO("Set config: Device");
        config.has_device = true;
#if !defined(ARCH_PORTDUINO) && !defined(ARCH_STM32WL) && !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR &&                            \
    !MESHTASTIC_EXCLUDE_ACCELEROMETER
        if (config.device.double_tap_as_button_press == false && c.payload_variant.device.double_tap_as_button_press == true &&
            accelerometerThread->enabled == false) {
            config.device.double_tap_as_button_press = c.payload_variant.device.double_tap_as_button_press;
            accelerometerThread->enabled = true;
            accelerometerThread->start();
        }
#endif
        if (config.device.button_gpio == c.payload_variant.device.button_gpio &&
            config.device.buzzer_gpio == c.payload_variant.device.buzzer_gpio &&
            config.device.role == c.payload_variant.device.role &&
            config.device.rebroadcast_mode == c.payload_variant.device.rebroadcast_mode) {
            requiresReboot = false;
        }
        config.device = c.payload_variant.device;
        if (config.device.rebroadcast_mode == meshtastic_Config_DeviceConfig_RebroadcastMode_NONE &&
            (config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER ||
             config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER_LATE)) {
            config.device.rebroadcast_mode = meshtastic_Config_DeviceConfig_RebroadcastMode_ALL;
            const char *warning = "Rebroadcast mode can't be set to NONE for a router role";
            LOG_WARN(warning);
            sendWarning(warning);
        }
        // If we're setting router role for the first time, install its intervals
        if (existingRole != c.payload_variant.device.role) {
            nodeDB->installRoleDefaults(c.payload_variant.device.role);
            changes |= SEGMENT_NODEDATABASE | SEGMENT_DEVICESTATE; // Some role defaults affect owner
        }
        if (config.device.node_info_broadcast_secs < min_node_info_broadcast_secs) {
            LOG_DEBUG("Tried to set node_info_broadcast_secs too low, setting to %d", min_node_info_broadcast_secs);
            config.device.node_info_broadcast_secs = min_node_info_broadcast_secs;
        }
        // Router Client and Repeater deprecated; Set it to client
        if (IS_ONE_OF(c.payload_variant.device.role, meshtastic_Config_DeviceConfig_Role_ROUTER_CLIENT,
                      meshtastic_Config_DeviceConfig_Role_REPEATER)) {
            config.device.role = meshtastic_Config_DeviceConfig_Role_CLIENT;
            if (moduleConfig.store_forward.enabled && !moduleConfig.store_forward.is_server) {
                moduleConfig.store_forward.is_server = true;
                changes |= SEGMENT_MODULECONFIG;
                requiresReboot = true;
            }
        }
#if USERPREFS_EVENT_MODE
        // If we're in event mode, nobody is a Router or Router Late
        if (config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER ||
            config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER_LATE) {
            config.device.role = meshtastic_Config_DeviceConfig_Role_CLIENT;
        }
#endif
        break;
    case meshtastic_Config_position_tag:
        LOG_INFO("Set config: Position");
        config.has_position = true;
        // If we have turned off the GPS (disabled or not present) and we're not using fixed position,
        // clear the stored position since it may not get updated
        if (config.position.gps_mode == meshtastic_Config_PositionConfig_GpsMode_ENABLED &&
            c.payload_variant.position.gps_mode != meshtastic_Config_PositionConfig_GpsMode_ENABLED &&
            config.position.fixed_position == false && c.payload_variant.position.fixed_position == false) {
            nodeDB->clearLocalPosition();
            saveChanges(SEGMENT_NODEDATABASE | SEGMENT_CONFIG, false);
        }
        config.position = c.payload_variant.position;

        // Save nodedb as well in case we got a fixed position packet
        break;
    case meshtastic_Config_power_tag:
        LOG_INFO("Set config: Power");
        config.has_power = true;
        // Really just the adc override is the only thing that can change without a reboot
        if (config.power.device_battery_ina_address == c.payload_variant.power.device_battery_ina_address &&
            config.power.is_power_saving == c.payload_variant.power.is_power_saving &&
            config.power.ls_secs == c.payload_variant.power.ls_secs &&
            config.power.min_wake_secs == c.payload_variant.power.min_wake_secs &&
            config.power.on_battery_shutdown_after_secs == c.payload_variant.power.on_battery_shutdown_after_secs &&
            config.power.sds_secs == c.payload_variant.power.sds_secs &&
            config.power.wait_bluetooth_secs == c.payload_variant.power.wait_bluetooth_secs) {
            requiresReboot = false;
        }
        config.power = c.payload_variant.power;
        if (c.payload_variant.power.on_battery_shutdown_after_secs > 0 &&
            c.payload_variant.power.on_battery_shutdown_after_secs < 30) {
            LOG_WARN("Tried to set on_battery_shutdown_after_secs too low, set to min 30 seconds");
            config.power.on_battery_shutdown_after_secs = 30;
        }
        break;
    case meshtastic_Config_network_tag:
        LOG_INFO("Set config: WiFi");
        config.has_network = true;
        config.network = c.payload_variant.network;
        break;
    case meshtastic_Config_display_tag:
        LOG_INFO("Set config: Display");
        config.has_display = true;
        if (config.display.screen_on_secs == c.payload_variant.display.screen_on_secs &&
            config.display.flip_screen == c.payload_variant.display.flip_screen &&
            config.display.oled == c.payload_variant.display.oled &&
            config.display.displaymode == c.payload_variant.display.displaymode) {
            requiresReboot = false;
        } else if (config.display.displaymode != meshtastic_Config_DisplayConfig_DisplayMode_COLOR &&
                   c.payload_variant.display.displaymode == meshtastic_Config_DisplayConfig_DisplayMode_COLOR) {
            config.bluetooth.enabled = false;
        }
#if !defined(ARCH_PORTDUINO) && !defined(ARCH_STM32WL) && !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR &&                            \
    !MESHTASTIC_EXCLUDE_ACCELEROMETER
        if (config.display.wake_on_tap_or_motion == false && c.payload_variant.display.wake_on_tap_or_motion == true &&
            accelerometerThread->enabled == false) {
            config.display.wake_on_tap_or_motion = c.payload_variant.display.wake_on_tap_or_motion;
            accelerometerThread->enabled = true;
            accelerometerThread->start();
        }
#endif
        config.display = c.payload_variant.display;
        break;

    case meshtastic_Config_lora_tag: {
        // Wrap the entire case in a block to scope variables and avoid crossing initialization
        auto oldLoraConfig = config.lora;
        auto validatedLora = c.payload_variant.lora;

        LOG_INFO("Set config: LoRa");
        config.has_lora = true;

        if (validatedLora.coding_rate != clampCodingRate(validatedLora.coding_rate)) {
            LOG_WARN("Invalid coding_rate %d, setting to %d", validatedLora.coding_rate, LORA_CR_DEFAULT);
            validatedLora.coding_rate = LORA_CR_DEFAULT;
        }

        if (validatedLora.spread_factor != clampSpreadFactor(validatedLora.spread_factor)) {
            LOG_WARN("Invalid spread_factor %d, setting to %d", validatedLora.spread_factor, LORA_SF_DEFAULT);
            validatedLora.spread_factor = LORA_SF_DEFAULT;
        }

        // If we're setting a new region, check the region is valid and then init the region or discard the change
        if (validatedLora.region != myRegion->code) {
            //  Region has changed so check whether it is valid for e.g. licensing conditions and if the lora config is valid
            if (RadioInterface::validateConfigRegion(validatedLora) && RadioInterface::validateConfigLora(validatedLora)) {
                // If we're setting region for the first time, init the region and regenerate the keys
                if (isRegionUnset && validatedLora.region > meshtastic_Config_LoRaConfig_RegionCode_UNSET) {
#if !(MESHTASTIC_EXCLUDE_PKI_KEYGEN || MESHTASTIC_EXCLUDE_PKI)
                    if (crypto) {
                        crypto->ensurePkiKeys(config.security, owner);
                    }
#endif
                    // new region is valid and we're coming from an unset region, so enable tx
                    validatedLora.tx_enabled = true;
                }
                // If we're unsetting the region for some reason, disable tx
                if (!isRegionUnset && validatedLora.region == meshtastic_Config_LoRaConfig_RegionCode_UNSET) {
                    validatedLora.tx_enabled = false;
                }
                // Ensure initRegion() uses the newly validated region
                config.lora.region = validatedLora.region;
                initRegion();
                if (myRegion->dutyCycle < 100) {
                    validatedLora.ignore_mqtt = true; // Ignore MQTT by default if region has a duty cycle limit
                }
                if (strncmp(moduleConfig.mqtt.root, default_mqtt_root, strlen(default_mqtt_root)) == 0) {
                    //  Default root is in use, so subscribe to the appropriate MQTT topic for this region
                    sprintf(moduleConfig.mqtt.root, "%s/%s", default_mqtt_root, myRegion->name);
                }
                changes = SEGMENT_CONFIG | SEGMENT_MODULECONFIG;
            } else {
                //  Region validation has failed, so just copy all of the old config over the new config
                validatedLora = oldLoraConfig;
            }
        } // end of new region handling

        if (!RadioInterface::validateConfigLora(validatedLora)) {
            if (fromOthers) {
                LOG_WARN("Invalid LoRa config received from another node, rejecting changes");
                //  modem_preset set to use the old setting if the check fails
                validatedLora.modem_preset = oldLoraConfig.modem_preset;
            } else {
                LOG_WARN("Invalid LoRa config received from client, using corrected values");
                RadioInterface::clampConfigLora(validatedLora);
            }
            //  use_preset and bandwidth are coerced into valid values by the check.
        }

        // All LoRa radio changes apply live via configChanged observer → reconfigure().
        // reconfigure() puts the radio in standby, reprograms all modem parameters, and restarts receive.
        requiresReboot = false;

#if defined(ARCH_PORTDUINO)
        // If running on portduino and using SimRadio, do not require reboot
        if (SimRadio::instance) {
            requiresReboot = false;
        }
#endif

#ifdef RF95_FAN_EN
        // Turn PA off if disabled by config
        if (c.payload_variant.lora.pa_fan_disabled) {
            digitalWrite(RF95_FAN_EN, LOW ^ 0);
        } else {
            digitalWrite(RF95_FAN_EN, HIGH ^ 0);
        }
#endif

#if HAS_LORA_FEM
        // Apply FEM LNA mode from config (only meaningful on hardware that supports it)
        // Note that a rejected lora config will revert this as well.
        if (loraFEMInterface.isLnaCanControl()) {
            loraFEMInterface.setLNAEnable(validatedLora.fem_lna_mode != meshtastic_Config_LoRaConfig_FEM_LNA_Mode_DISABLED);
        } else if (validatedLora.fem_lna_mode != meshtastic_Config_LoRaConfig_FEM_LNA_Mode_NOT_PRESENT) {
            // Hardware FEM does not support LNA control; normalize stored config to match actual capability
            LOG_WARN("FEM LNA mode configured but current FEM does not support LNA control; normalizing to NOT_PRESENT");
            validatedLora.fem_lna_mode = meshtastic_Config_LoRaConfig_FEM_LNA_Mode_NOT_PRESENT;
        }
#endif

        config.lora = validatedLora; // Finally, return the validated config back to the main config

        break;
    }
    case meshtastic_Config_bluetooth_tag:
        LOG_INFO("Set config: Bluetooth");
        config.has_bluetooth = true;
        config.bluetooth = c.payload_variant.bluetooth;
        break;
    case meshtastic_Config_security_tag:
        LOG_INFO("Set config: Security");
        config.security = c.payload_variant.security;
#if !(MESHTASTIC_EXCLUDE_PKI_KEYGEN) && !(MESHTASTIC_EXCLUDE_PKI)
        // If the client set the key to blank, go ahead and regenerate so long as we're not in ham mode
        if (!owner.is_licensed && config.lora.region != meshtastic_Config_LoRaConfig_RegionCode_UNSET) {
            if (config.security.private_key.size != 32) {
                crypto->generateKeyPair(config.security.public_key.bytes, config.security.private_key.bytes);

            } else {
                if (crypto->regeneratePublicKey(config.security.public_key.bytes, config.security.private_key.bytes)) {
                    config.security.public_key.size = 32;
                }
            }
        }
#endif
        owner.public_key.size = config.security.public_key.size;
        memcpy(owner.public_key.bytes, config.security.public_key.bytes, config.security.public_key.size);
#if !MESHTASTIC_EXCLUDE_PKI
        crypto->setDHPrivateKey(config.security.private_key.bytes);
#endif
        if (config.security.is_managed && !(config.security.admin_key[0].size == 32 || config.security.admin_key[1].size == 32 ||
                                            config.security.admin_key[2].size == 32)) {
            config.security.is_managed = false;
            const char *warning = "You must provide at least one admin public key to enable managed mode";
            LOG_WARN(warning);
            sendWarning(warning);
        }

        if (config.security.debug_log_api_enabled == c.payload_variant.security.debug_log_api_enabled &&
            config.security.serial_enabled == c.payload_variant.security.serial_enabled)
            requiresReboot = false;

        break;
    case meshtastic_Config_device_ui_tag:
        // NOOP! This is handled by handleStoreDeviceUIConfig
        break;
    }
    if (requiresReboot && !hasOpenEditTransaction) {
        disableBluetooth();
    } // end of switch case which_payload_variant

    saveChanges(changes, requiresReboot);
} // end of handleSetConfig

bool AdminModule::handleSetModuleConfig(const meshtastic_ModuleConfig &c)
{
    bool shouldReboot = true;
    // If we are in an open transaction or configuring MQTT or Serial (which have validation), defer disabling Bluetooth
    // Otherwise, disable Bluetooth to prevent the phone from interfering with the config
    if (!hasOpenEditTransaction && !IS_ONE_OF(c.which_payload_variant, meshtastic_ModuleConfig_mqtt_tag,
                                              meshtastic_ModuleConfig_serial_tag, meshtastic_ModuleConfig_statusmessage_tag)) {
        disableBluetooth();
    }

    switch (c.which_payload_variant) {
    case meshtastic_ModuleConfig_mqtt_tag:
#if MESHTASTIC_EXCLUDE_MQTT
        LOG_WARN("Set module config: MESHTASTIC_EXCLUDE_MQTT is defined. Not setting MQTT config");
        return false;
#else
        LOG_INFO("Set module config: MQTT");
        if (!MQTT::isValidConfig(c.payload_variant.mqtt)) {
            return false;
        }
        // Disable Bluetooth to prevent interference during MQTT configuration
        disableBluetooth();
        moduleConfig.has_mqtt = true;
        moduleConfig.mqtt = c.payload_variant.mqtt;
#endif
        break;
    case meshtastic_ModuleConfig_serial_tag:
        LOG_INFO("Set module config: Serial");
#if (defined(ARCH_ESP32) || defined(ARCH_NRF52) || defined(ARCH_RP2040)) && !defined(CONFIG_IDF_TARGET_ESP32S2) &&               \
    !defined(CONFIG_IDF_TARGET_ESP32C3)
        if (!SerialModule::isValidConfig(c.payload_variant.serial)) {
            LOG_ERROR("Invalid serial config");
            return false;
        }
        disableBluetooth(); // Disable Bluetooth to prevent interference during Serial configuration
#endif
        moduleConfig.has_serial = true;
        moduleConfig.serial = c.payload_variant.serial;
        break;
    case meshtastic_ModuleConfig_external_notification_tag:
        LOG_INFO("Set module config: External Notification");
        moduleConfig.has_external_notification = true;
        moduleConfig.external_notification = c.payload_variant.external_notification;
        break;
    case meshtastic_ModuleConfig_store_forward_tag:
        LOG_INFO("Set module config: Store & Forward");
        moduleConfig.has_store_forward = true;
        moduleConfig.store_forward = c.payload_variant.store_forward;
        break;
    case meshtastic_ModuleConfig_range_test_tag:
        LOG_INFO("Set module config: Range Test");
        moduleConfig.has_range_test = true;
        moduleConfig.range_test = c.payload_variant.range_test;
        break;
    case meshtastic_ModuleConfig_telemetry_tag:
        LOG_INFO("Set module config: Telemetry");
        moduleConfig.has_telemetry = true;
        moduleConfig.telemetry = c.payload_variant.telemetry;
        break;
    case meshtastic_ModuleConfig_canned_message_tag:
        LOG_INFO("Set module config: Canned Message");
        moduleConfig.has_canned_message = true;
        moduleConfig.canned_message = c.payload_variant.canned_message;
        break;
    case meshtastic_ModuleConfig_audio_tag:
        LOG_INFO("Set module config: Audio");
        moduleConfig.has_audio = true;
        moduleConfig.audio = c.payload_variant.audio;
        break;
    case meshtastic_ModuleConfig_remote_hardware_tag:
        LOG_INFO("Set module config: Remote Hardware");
        moduleConfig.has_remote_hardware = true;
        moduleConfig.remote_hardware = c.payload_variant.remote_hardware;
        break;
    case meshtastic_ModuleConfig_neighbor_info_tag:
        LOG_INFO("Set module config: Neighbor Info");
        moduleConfig.has_neighbor_info = true;
        if (moduleConfig.neighbor_info.update_interval < min_neighbor_info_broadcast_secs) {
            LOG_DEBUG("Tried to set update_interval too low, setting to %d", default_neighbor_info_broadcast_secs);
            moduleConfig.neighbor_info.update_interval = default_neighbor_info_broadcast_secs;
        }
        moduleConfig.neighbor_info = c.payload_variant.neighbor_info;
        break;
    case meshtastic_ModuleConfig_detection_sensor_tag:
        LOG_INFO("Set module config: Detection Sensor");
        moduleConfig.has_detection_sensor = true;
        moduleConfig.detection_sensor = c.payload_variant.detection_sensor;
        break;
    case meshtastic_ModuleConfig_ambient_lighting_tag:
        LOG_INFO("Set module config: Ambient Lighting");
        moduleConfig.has_ambient_lighting = true;
        moduleConfig.ambient_lighting = c.payload_variant.ambient_lighting;
        break;
    case meshtastic_ModuleConfig_paxcounter_tag:
        LOG_INFO("Set module config: Paxcounter");
        moduleConfig.has_paxcounter = true;
        moduleConfig.paxcounter = c.payload_variant.paxcounter;
        break;
    case meshtastic_ModuleConfig_statusmessage_tag:
        LOG_INFO("Set module config: StatusMessage");
        moduleConfig.has_statusmessage = true;
        moduleConfig.statusmessage = c.payload_variant.statusmessage;
        shouldReboot = false;
        break;
    case meshtastic_ModuleConfig_traffic_management_tag:
        LOG_INFO("Set module config: Traffic Management");
        moduleConfig.has_traffic_management = true;
        moduleConfig.traffic_management = c.payload_variant.traffic_management;
        break;
    }
    saveChanges(SEGMENT_MODULECONFIG, shouldReboot);
    return true;
}

void AdminModule::handleSetChannel(const meshtastic_Channel &cc)
{
    channels.setChannel(cc);
    if (channels.ensureLicensedOperation()) {
        sendWarning(licensedModeMessage);
    }
    channels.onConfigChanged(); // tell the radios about this change
    saveChanges(SEGMENT_CHANNELS, false);
}

/**
 * Getters
 */

void AdminModule::handleGetOwner(const meshtastic_MeshPacket &req)
{
    if (req.decoded.want_response) {
        // We create the reply here
        meshtastic_AdminMessage res = meshtastic_AdminMessage_init_default;
        res.get_owner_response = owner;

        res.which_payload_variant = meshtastic_AdminMessage_get_owner_response_tag;
        setPassKey(&res);
        myReply = allocDataProtobuf(res);
        if (req.pki_encrypted) {
            myReply->pki_encrypted = true;
        }
    }
}

void AdminModule::handleGetConfig(const meshtastic_MeshPacket &req, const uint32_t configType)
{
    meshtastic_AdminMessage res = meshtastic_AdminMessage_init_default;

    if (req.decoded.want_response) {
        switch (configType) {
        case meshtastic_AdminMessage_ConfigType_DEVICE_CONFIG:
            LOG_INFO("Get config: Device");
            res.get_config_response.which_payload_variant = meshtastic_Config_device_tag;
            res.get_config_response.payload_variant.device = config.device;
            break;
        case meshtastic_AdminMessage_ConfigType_POSITION_CONFIG:
            LOG_INFO("Get config: Position");
            res.get_config_response.which_payload_variant = meshtastic_Config_position_tag;
            res.get_config_response.payload_variant.position = config.position;
            break;
        case meshtastic_AdminMessage_ConfigType_POWER_CONFIG:
            LOG_INFO("Get config: Power");
            res.get_config_response.which_payload_variant = meshtastic_Config_power_tag;
            res.get_config_response.payload_variant.power = config.power;
            break;
        case meshtastic_AdminMessage_ConfigType_NETWORK_CONFIG:
            LOG_INFO("Get config: Network");
            res.get_config_response.which_payload_variant = meshtastic_Config_network_tag;
            res.get_config_response.payload_variant.network = config.network;
            writeSecret(res.get_config_response.payload_variant.network.wifi_psk,
                        sizeof(res.get_config_response.payload_variant.network.wifi_psk), config.network.wifi_psk);
            break;
        case meshtastic_AdminMessage_ConfigType_DISPLAY_CONFIG:
            LOG_INFO("Get config: Display");
            res.get_config_response.which_payload_variant = meshtastic_Config_display_tag;
            res.get_config_response.payload_variant.display = config.display;
            break;
        case meshtastic_AdminMessage_ConfigType_LORA_CONFIG:
            LOG_INFO("Get config: LoRa");
            res.get_config_response.which_payload_variant = meshtastic_Config_lora_tag;
            res.get_config_response.payload_variant.lora = config.lora;
            break;
        case meshtastic_AdminMessage_ConfigType_BLUETOOTH_CONFIG:
            LOG_INFO("Get config: Bluetooth");
            res.get_config_response.which_payload_variant = meshtastic_Config_bluetooth_tag;
            res.get_config_response.payload_variant.bluetooth = config.bluetooth;
            break;
        case meshtastic_AdminMessage_ConfigType_SECURITY_CONFIG:
            LOG_INFO("Get config: Security");
            res.get_config_response.which_payload_variant = meshtastic_Config_security_tag;
            res.get_config_response.payload_variant.security = config.security;
            break;
        case meshtastic_AdminMessage_ConfigType_SESSIONKEY_CONFIG:
            LOG_INFO("Get config: Sessionkey");
            res.get_config_response.which_payload_variant = meshtastic_Config_sessionkey_tag;
            break;
        case meshtastic_AdminMessage_ConfigType_DEVICEUI_CONFIG:
            // NOOP! This is handled by handleGetDeviceUIConfig
            res.get_config_response.which_payload_variant = meshtastic_Config_device_ui_tag;
            break;
        }
        // NOTE: The phone app needs to know the ls_secs value so it can properly expect sleep behavior.
        // So even if we internally use 0 to represent 'use default' we still need to send the value we are
        // using to the app (so that even old phone apps work with new device loads).
        // r.get_radio_response.preferences.ls_secs = getPref_ls_secs();
        // hideSecret(r.get_radio_response.preferences.wifi_ssid); // hmm - leave public for now, because only minimally
        // private and useful for users to know current provisioning)
        // hideSecret(r.get_radio_response.preferences.wifi_password); r.get_config_response.which_payloadVariant =
        // Config_ModuleConfig_telemetry_tag;
        res.which_payload_variant = meshtastic_AdminMessage_get_config_response_tag;
        setPassKey(&res);
        myReply = allocDataProtobuf(res);
        if (req.pki_encrypted) {
            myReply->pki_encrypted = true;
        }
    }
}

void AdminModule::handleGetModuleConfig(const meshtastic_MeshPacket &req, const uint32_t configType)
{
    meshtastic_AdminMessage res = meshtastic_AdminMessage_init_default;

    if (req.decoded.want_response) {
        const char *configName = "?";
        switch (configType) {
        case meshtastic_AdminMessage_ModuleConfigType_MQTT_CONFIG:
            configName = "MQTT";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_mqtt_tag;
            res.get_module_config_response.payload_variant.mqtt = moduleConfig.mqtt;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_SERIAL_CONFIG:
            configName = "Serial";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_serial_tag;
            res.get_module_config_response.payload_variant.serial = moduleConfig.serial;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_EXTNOTIF_CONFIG:
            configName = "External Notification";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_external_notification_tag;
            res.get_module_config_response.payload_variant.external_notification = moduleConfig.external_notification;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_STOREFORWARD_CONFIG:
            configName = "Store & Forward";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_store_forward_tag;
            res.get_module_config_response.payload_variant.store_forward = moduleConfig.store_forward;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_RANGETEST_CONFIG:
            configName = "Range Test";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_range_test_tag;
            res.get_module_config_response.payload_variant.range_test = moduleConfig.range_test;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_TELEMETRY_CONFIG:
            configName = "Telemetry";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_telemetry_tag;
            res.get_module_config_response.payload_variant.telemetry = moduleConfig.telemetry;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_CANNEDMSG_CONFIG:
            configName = "Canned Message";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_canned_message_tag;
            res.get_module_config_response.payload_variant.canned_message = moduleConfig.canned_message;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_AUDIO_CONFIG:
            configName = "Audio";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_audio_tag;
            res.get_module_config_response.payload_variant.audio = moduleConfig.audio;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_REMOTEHARDWARE_CONFIG:
            configName = "Remote Hardware";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_remote_hardware_tag;
            res.get_module_config_response.payload_variant.remote_hardware = moduleConfig.remote_hardware;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_NEIGHBORINFO_CONFIG:
            configName = "Neighbor Info";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_neighbor_info_tag;
            res.get_module_config_response.payload_variant.neighbor_info = moduleConfig.neighbor_info;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_DETECTIONSENSOR_CONFIG:
            configName = "Detection Sensor";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_detection_sensor_tag;
            res.get_module_config_response.payload_variant.detection_sensor = moduleConfig.detection_sensor;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_AMBIENTLIGHTING_CONFIG:
            configName = "Ambient Lighting";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_ambient_lighting_tag;
            res.get_module_config_response.payload_variant.ambient_lighting = moduleConfig.ambient_lighting;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_PAXCOUNTER_CONFIG:
            configName = "Paxcounter";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_paxcounter_tag;
            res.get_module_config_response.payload_variant.paxcounter = moduleConfig.paxcounter;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_STATUSMESSAGE_CONFIG:
            configName = "StatusMessage";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_statusmessage_tag;
            res.get_module_config_response.payload_variant.statusmessage = moduleConfig.statusmessage;
            break;
        case meshtastic_AdminMessage_ModuleConfigType_TRAFFICMANAGEMENT_CONFIG:
            configName = "Traffic Management";
            res.get_module_config_response.which_payload_variant = meshtastic_ModuleConfig_traffic_management_tag;
            res.get_module_config_response.payload_variant.traffic_management = moduleConfig.traffic_management;
            break;
        }
        LOG_INFO("Get module config: %s", configName);

        // NOTE: The phone app needs to know the ls_secsvalue so it can properly expect sleep behavior.
        // So even if we internally use 0 to represent 'use default' we still need to send the value we are
        // using to the app (so that even old phone apps work with new device loads).
        // r.get_radio_response.preferences.ls_secs = getPref_ls_secs();
        // hideSecret(r.get_radio_response.preferences.wifi_ssid); // hmm - leave public for now, because only minimally
        // private and useful for users to know current provisioning)
        // hideSecret(r.get_radio_response.preferences.wifi_password); r.get_config_response.which_payloadVariant =
        // Config_ModuleConfig_telemetry_tag;
        res.which_payload_variant = meshtastic_AdminMessage_get_module_config_response_tag;
        setPassKey(&res);
        myReply = allocDataProtobuf(res);
        if (req.pki_encrypted) {
            myReply->pki_encrypted = true;
        }
    }
}

void AdminModule::handleGetNodeRemoteHardwarePins(const meshtastic_MeshPacket &req)
{
    meshtastic_AdminMessage r = meshtastic_AdminMessage_init_default;
    r.which_payload_variant = meshtastic_AdminMessage_get_node_remote_hardware_pins_response_tag;
    for (uint8_t i = 0; i < devicestate.node_remote_hardware_pins_count; i++) {
        if (devicestate.node_remote_hardware_pins[i].node_num == 0 || !devicestate.node_remote_hardware_pins[i].has_pin) {
            continue;
        }
        r.get_node_remote_hardware_pins_response.node_remote_hardware_pins[i] = devicestate.node_remote_hardware_pins[i];
    }
    for (uint8_t i = 0; i < moduleConfig.remote_hardware.available_pins_count; i++) {
        if (!moduleConfig.remote_hardware.available_pins[i].gpio_pin) {
            continue;
        }
        meshtastic_NodeRemoteHardwarePin nodePin = meshtastic_NodeRemoteHardwarePin_init_default;
        nodePin.node_num = nodeDB->getNodeNum();
        nodePin.pin = moduleConfig.remote_hardware.available_pins[i];
        r.get_node_remote_hardware_pins_response.node_remote_hardware_pins[i + 12] = nodePin;
    }
    setPassKey(&r);
    myReply = allocDataProtobuf(r);
    if (req.pki_encrypted) {
        myReply->pki_encrypted = true;
    }
}

void AdminModule::handleGetDeviceMetadata(const meshtastic_MeshPacket &req)
{
    meshtastic_AdminMessage r = meshtastic_AdminMessage_init_default;
    r.get_device_metadata_response = getDeviceMetadata();
    r.which_payload_variant = meshtastic_AdminMessage_get_device_metadata_response_tag;
    setPassKey(&r);
    myReply = allocDataProtobuf(r);
    if (req.pki_encrypted) {
        myReply->pki_encrypted = true;
    }
}

void AdminModule::handleGetDeviceConnectionStatus(const meshtastic_MeshPacket &req)
{
    meshtastic_AdminMessage r = meshtastic_AdminMessage_init_default;

    meshtastic_DeviceConnectionStatus conn = meshtastic_DeviceConnectionStatus_init_zero;

#if HAS_WIFI
    conn.has_wifi = true;
    conn.wifi.has_status = true;
#ifdef ARCH_PORTDUINO
    conn.wifi.status.is_connected = true;
#else
    conn.wifi.status.is_connected = WiFi.status() == WL_CONNECTED;
#endif
    strncpy(conn.wifi.ssid, config.network.wifi_ssid, 33);
    if (conn.wifi.status.is_connected) {
        conn.wifi.rssi = WiFi.RSSI();
        conn.wifi.status.ip_address = WiFi.localIP();
#ifndef MESHTASTIC_EXCLUDE_MQTT
        conn.wifi.status.is_mqtt_connected = mqtt && mqtt->isConnectedDirectly();
#endif
        conn.wifi.status.is_syslog_connected = false; // FIXME wire this up
    }
#endif

#if HAS_ETHERNET && !defined(USE_WS5500)
    conn.has_ethernet = true;
    conn.ethernet.has_status = true;
    if (Ethernet.linkStatus() == LinkON) {
        conn.ethernet.status.is_connected = true;
        conn.ethernet.status.ip_address = Ethernet.localIP();
#if !MESHTASTIC_EXCLUDE_MQTT
        conn.ethernet.status.is_mqtt_connected = mqtt && mqtt->isConnectedDirectly();
#endif
        conn.ethernet.status.is_syslog_connected = false; // FIXME wire this up
    } else {
        conn.ethernet.status.is_connected = false;
    }
#endif

#if HAS_BLUETOOTH
    conn.has_bluetooth = true;
    conn.bluetooth.pin = config.bluetooth.fixed_pin;
#ifdef ARCH_ESP32
    if (config.bluetooth.enabled && nimbleBluetooth) {
        conn.bluetooth.is_connected = nimbleBluetooth->isConnected();
        conn.bluetooth.rssi = nimbleBluetooth->getRssi();
    }
#elif defined(ARCH_NRF52)
    if (config.bluetooth.enabled && nrf52Bluetooth) {
        conn.bluetooth.is_connected = nrf52Bluetooth->isConnected();
    }
#endif
#endif
    conn.has_serial = true; // No serial-less devices
#if !MESHTASTIC_EXCLUDE_POWER_FSM
    conn.serial.is_connected = powerFSM.getState() == &stateSERIAL;
#else
    conn.serial.is_connected = powerFSM.getState();
#endif
    conn.serial.baud = SERIAL_BAUD;

    r.get_device_connection_status_response = conn;
    r.which_payload_variant = meshtastic_AdminMessage_get_device_connection_status_response_tag;
    setPassKey(&r);
    myReply = allocDataProtobuf(r);
    if (req.pki_encrypted) {
        myReply->pki_encrypted = true;
    }
}

void AdminModule::handleGetChannel(const meshtastic_MeshPacket &req, uint32_t channelIndex)
{
    if (req.decoded.want_response) {
        // We create the reply here
        meshtastic_AdminMessage r = meshtastic_AdminMessage_init_default;
        r.get_channel_response = channels.getByIndex(channelIndex);
        r.which_payload_variant = meshtastic_AdminMessage_get_channel_response_tag;
        setPassKey(&r);
        myReply = allocDataProtobuf(r);
        if (req.pki_encrypted) {
            myReply->pki_encrypted = true;
        }
    }
}

void AdminModule::handleGetDeviceUIConfig(const meshtastic_MeshPacket &req)
{
    meshtastic_AdminMessage r = meshtastic_AdminMessage_init_default;
    r.which_payload_variant = meshtastic_AdminMessage_get_ui_config_response_tag;
    r.get_ui_config_response = uiconfig;
    myReply = allocDataProtobuf(r);
    if (req.pki_encrypted) {
        myReply->pki_encrypted = true;
    }
}

void AdminModule::reboot(int32_t seconds)
{
    LOG_INFO("Reboot in %d seconds", seconds);
    if (screen)
        screen->showSimpleBanner("Rebooting...", 0); // stays on screen
    rebootAtMsec = (seconds < 0) ? 0 : (millis() + seconds * 1000);
}

void AdminModule::saveChanges(int saveWhat, bool shouldReboot)
{
    if (!hasOpenEditTransaction) {
        LOG_INFO("Save changes to disk");
        service->reloadConfig(saveWhat); // Calls saveToDisk among other things
    } else {
        LOG_INFO("Delay save of changes to disk until the open transaction is committed");
    }
    if (shouldReboot && !hasOpenEditTransaction) {
        reboot(DEFAULT_REBOOT_SECONDS);
    }
}

void AdminModule::handleStoreDeviceUIConfig(const meshtastic_DeviceUIConfig &uicfg)
{
#if HAS_SCREEN
    nodeDB->saveProto("/prefs/uiconfig.proto", meshtastic_DeviceUIConfig_size, &meshtastic_DeviceUIConfig_msg, &uicfg);
#endif
}

void AdminModule::handleSetHamMode(const meshtastic_HamParameters &p)
{
    // Validate ham parameters before setting since this would bypass validation in the owner struct
    const char *fieldsToCheck[] = {p.call_sign, p.short_name};
    const char *fieldNames[] = {"call_sign", "short_name"};
    for (int i = 0; i < 2; i++) {
        if (*fieldsToCheck[i]) {
            const char *start = fieldsToCheck[i];
            while (*start && isspace((unsigned char)*start))
                start++;
            if (*start == '\0') {
                LOG_WARN("Rejected ham %s: must contain at least 1 non-whitespace character", fieldNames[i]);
                return;
            }
        }
    }

    // Set call sign and override lora limitations for licensed use
    strncpy(owner.long_name, p.call_sign, sizeof(owner.long_name));
    owner.long_name[sizeof(owner.long_name) - 1] = '\0';
    sanitizeUtf8(owner.long_name, sizeof(owner.long_name));
    strncpy(owner.short_name, p.short_name, sizeof(owner.short_name));
    owner.short_name[sizeof(owner.short_name) - 1] = '\0';
    sanitizeUtf8(owner.short_name, sizeof(owner.short_name));
    owner.is_licensed = true;
    config.lora.override_duty_cycle = true;
    config.lora.tx_power = p.tx_power;
    config.lora.override_frequency = p.frequency;
    // Set node info broadcast interval to 10 minutes
    // For FCC minimum call-sign announcement
    config.device.node_info_broadcast_secs = 600;

    config.device.rebroadcast_mode = meshtastic_Config_DeviceConfig_RebroadcastMode_LOCAL_ONLY;
    // Remove PSK of primary channel for plaintext amateur usage

    if (channels.ensureLicensedOperation()) {
        sendWarning(licensedModeMessage);
    }
    channels.onConfigChanged();

    service->reloadOwner(false);
    saveChanges(SEGMENT_CONFIG | SEGMENT_NODEDATABASE | SEGMENT_DEVICESTATE | SEGMENT_CHANNELS);
}

AdminModule::AdminModule() : ProtobufModule("Admin", meshtastic_PortNum_ADMIN_APP, &meshtastic_AdminMessage_msg)
{
    // restrict to the admin channel for rx
    // boundChannel = Channels::adminChannel;
}

void AdminModule::setPassKey(meshtastic_AdminMessage *res)
{
    if (session_time == 0 || millis() / 1000 > session_time + 150) {
        for (int i = 0; i < 8; i++) {
            session_passkey[i] = random();
        }
        session_time = millis() / 1000;
    }
    memcpy(res->session_passkey.bytes, session_passkey, 8);
    res->session_passkey.size = 8;
    printBytes("Set admin key to ", res->session_passkey.bytes, 8);
    // if halfway to session_expire, regenerate session_passkey, reset the timeout
    // set the key in the packet
}

bool AdminModule::checkPassKey(meshtastic_AdminMessage *res)
{ // check that the key in the packet is still valid
    printBytes("Incoming session key: ", res->session_passkey.bytes, 8);
    printBytes("Expected session key: ", session_passkey, 8);
    return (session_time + 300 > millis() / 1000 && res->session_passkey.size == 8 &&
            memcmp(res->session_passkey.bytes, session_passkey, 8) == 0);
}

bool AdminModule::messageIsResponse(const meshtastic_AdminMessage *r)
{
    if (r->which_payload_variant == meshtastic_AdminMessage_get_channel_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_owner_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_config_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_module_config_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_canned_message_module_messages_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_device_metadata_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_ringtone_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_device_connection_status_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_node_remote_hardware_pins_response_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_ui_config_response_tag)
        return true;
    else
        return false;
}

bool AdminModule::messageIsRequest(const meshtastic_AdminMessage *r)
{
    if (r->which_payload_variant == meshtastic_AdminMessage_get_channel_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_owner_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_config_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_module_config_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_canned_message_module_messages_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_device_metadata_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_ringtone_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_device_connection_status_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_node_remote_hardware_pins_request_tag ||
        r->which_payload_variant == meshtastic_AdminMessage_get_ui_config_request_tag)
        return true;
    else
        return false;
}

void AdminModule::handleSendInputEvent(const meshtastic_AdminMessage_InputEvent &inputEvent)
{
    LOG_DEBUG("Processing input event: event_code=%u, kb_char=%u, touch_x=%u, touch_y=%u", inputEvent.event_code,
              inputEvent.kb_char, inputEvent.touch_x, inputEvent.touch_y);

    // Create InputEvent for injection.
    //
    // `.source` MUST be a non-null C string: the LOG_INFO below formats it
    // with %s, and passing NULL to the esp-log formatter crashes with
    // Guru Meditation LoadProhibited at strlen(NULL). Other InputBroker
    // sources (buttons, rotary) always set this; the admin path was the
    // only one leaving it default-null.
    InputEvent event = {.source = "admin",
                        .inputEvent = (input_broker_event)inputEvent.event_code,
                        .kbchar = (unsigned char)inputEvent.kb_char,
                        .touchX = inputEvent.touch_x,
                        .touchY = inputEvent.touch_y};

    // Log the event being injected
    LOG_INFO("Injecting input event from admin: source=%s, event=%u, char=%c(%u), touch=(%u,%u)", event.source, event.inputEvent,
             (event.kbchar >= 32 && event.kbchar <= 126) ? event.kbchar : '?', event.kbchar, event.touchX, event.touchY);

    // Wake the device if asleep
    powerFSM.trigger(EVENT_INPUT);
#if !defined(MESHTASTIC_EXCLUDE_INPUTBROKER)
    // Inject the event through InputBroker
    if (inputBroker) {
        inputBroker->injectInputEvent(&event);
    } else {
        LOG_ERROR("InputBroker not available for event injection");
    }
#endif
}

void AdminModule::sendWarning(const char *format, ...)
{
    meshtastic_ClientNotification *cn = clientNotificationPool.allocZeroed();
    if (!cn)
        return;

    cn->level = meshtastic_LogRecord_Level_WARNING;
    cn->time = getValidTime(RTCQualityFromNet);

    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
#ifdef ARCH_ESP32
    if (nimbleBluetooth)
        nimbleBluetooth->deinit();
#elif defined(ARCH_NRF52)
    if (nrf52Bluetooth)
        nrf52Bluetooth->shutdown();
#endif
#endif
}