add findmyflipper

base_pack/find_my_flipper/README.md

@@ -0,0 +1,74 @@
+# FindMy Flipper - FindMy SmartTag Emulator
+
+This app extends the functionality of the FlipperZero's bluetooth capabilities, enabling it to act as an Apple AirTag or Samsung SmartTag, or even both simultaneously. It utilizes the FlipperZero's BLE beacon to broadcast a SmartTag signal to be picked up by the FindMy Network. I made this to serve as a versatile tool for tracking purposes, offering the ability to clone existing tags, generate OpenHaystack key pairs for integration with Apple's FindMy network, and tune the device's beacon broadcast settings.
+
+## Features
+
+1. Tag Emulation: Clone your existing Apple AirTag or Samsung SmartTag to the FlipperZero, or generate a key pair for use with the FindMy network without owning an actual AirTag.
+2. Customization: Users can adjust the interval between beacon broadcasts and modify the transmit power to suit their needs, optimizing for both visibility and battery life.
+3. Efficient Background Operation: The app is optimized to run in the background, ensuring that your FlipperZero can still be tracked with minimal battery usage and without stopping normal use.
+
+## Usage Guide
+
+### Step 1: Installation
+- **Option A:** Use the released/precompiled firmware appropriate (FAP) for your device.
+- **Option B:** Build the firmware yourself using `fbt/ufbt`.
+- Both Installation options require you to be running a dev build of firmware. When release gets access to the extra BLE beacon this will change, thank you!
+### Step 2: Obtaining SmartTag Data
+
+#### Option A: Open Haystack Method
+1. **Generate a Tag:** Download the `generate_keys.py` file and execute it in your terminal. (You will need cryptography ```python3 -m pip install cryptography```)
+2. **Follow Prompts:** During execution, you'll be prompted for inputs. By the end, you'll obtain a **Private Key**, **Public Key**, **Payload**, and **MAC Address**.
+   - **Private Key** is necessary to receive location reports from Apple.
+   - **MAC Address** should be registered in the FlipperZero app:
+     1. Open the app and navigate to the config menu.
+     2. Choose "register tag" and enter the MAC Address when prompted.
+     3. A payload dialog will appear next. Enter your **Payload** here.
+     4. Click save.
+3. **Configuration Completion:** With this setup, your device is ready for Open Haystack. Proceed with the specific steps for Open Haystack or MaclessHaystack based on your setup.
+   - Don't Own a Mac: https://github.com/dchristl/macless-haystack
+   - Own a Mac: https://github.com/seemoo-lab/openhaystack
+
+#### Option B: Cloning Existing Tag
+1. **Pair a Tag:** First, pair an AirTag or Samsung SmartTag with your device.
+2. **Enter 'Lost' Mode:** Keep the tag away from the device it's registered to for approximately 15 minutes.
+3. **Download nrfConnect:** Install nrfConnect from the Apple App Store or Google Play Store.
+4. **Filter and Scan:**
+   - Open the app, click on filters, and exclude all except for the brand of your tag (Apple/Samsung).
+   - Adjust the RSSI to the lowest setting (-40 dBm).
+   - Initiate a scan. Wait for your SmartTag to appear as a "FindMy" device.
+5. **Capture Data:** Click **Raw** or **View Raw** to capture your **payload** and note your tag's **MAC Address**. Immediately remove the tag's battery to prevent key/MAC rotation.
+6. **Enter Data in FlipperZero App:** Input the captured **payload** and **MAC Address** into the FlipperZero app.
+
+### Step 3: Configuration
+- Upon launching the app, choose whether to clone an AirTag or SmartTag, generate a new Open Haystack key pair, or adjust broadcast settings.
+
+### Step 4: Tracking
+- Once the app is configured, your FlipperZero can be tracked using the relevant platform's tracking service (FindMy app for Apple devices, SmartThings for Samsung devices, and respective web browsers).
+
+
+Customization
+
+- Beacon Interval: Adjust how frequently your FlipperZero broadcasts its presence.
+- Transmit Power: Increase or decrease the signal strength to balance between tracking range and battery life.
+
+Background Use
+
+The app is designed to have a negligible impact on battery life, even when running in the background. This allows for continuous tracking without the need for frequent recharging.
+
+Compatibility
+
+- Apple devices for AirTag tracking via the FindMy network.
+- Any device that supports Samsung SmartTag tracking, including web browsers (previously FindMyMobile).
+
+Thanks
+
+- Huge thanks to all the people that contributed to the OpenHaystack project, supporting projects, and guides on the subject. This wouldn't be a thing without any of you!
+
+Legal and Privacy
+
+This app is intended for personal and educational use. Users are responsible for complying with local privacy laws and regulations regarding tracking devices. The cloning and emulation of tracking tags should be done responsibly and with respect to the ownership of the original devices.
+
+Disclaimer
+
+This project is not affiliated with Apple Inc. or Samsung. All product names, logos, and brands are property of their respective owners. Use this app responsibly and ethically.

base_pack/find_my_flipper/application.fam

@@ -0,0 +1,15 @@
+App(
+    appid="findmy",
+    name="FindMy Flipper",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="findmy_main",
+    requires=["gui"],
+    stack_size=2 * 1024,
+    fap_icon="location_icon.png",
+    fap_icon_assets="icons",
+    fap_category="Bluetooth",
+    fap_author="@MatthewKuKanich",
+    fap_weburl="https://github.com/MatthewKuKanich/FindMyFlipper",
+    fap_version="1.0",
+    fap_description="BLE FindMy Location Beacon",
+)

base_pack/find_my_flipper/findmy.c

@@ -0,0 +1,156 @@
+#include "findmy_i.h"
+
+static bool findmy_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    FindMy* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool findmy_back_event_callback(void* context) {
+    furi_assert(context);
+    FindMy* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static FindMy* findmy_app_alloc() {
+    FindMy* app = malloc(sizeof(FindMy));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->storage = furi_record_open(RECORD_STORAGE);
+    app->dialogs = furi_record_open(RECORD_DIALOGS);
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+
+    app->scene_manager = scene_manager_alloc(&findmy_scene_handlers, app);
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_custom_event_callback(app->view_dispatcher, findmy_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, findmy_back_event_callback);
+
+    app->findmy_main = findmy_main_alloc(app);
+    view_dispatcher_add_view(
+        app->view_dispatcher, FindMyViewMain, findmy_main_get_view(app->findmy_main));
+
+    app->byte_input = byte_input_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, FindMyViewByteInput, byte_input_get_view(app->byte_input));
+
+    app->var_item_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        FindMyViewVarItemList,
+        variable_item_list_get_view(app->var_item_list));
+
+    app->popup = popup_alloc();
+    view_dispatcher_add_view(app->view_dispatcher, FindMyViewPopup, popup_get_view(app->popup));
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    findmy_state_load(&app->state);
+    findmy_state_apply(&app->state);
+
+    findmy_main_update_active(app->findmy_main, furi_hal_bt_extra_beacon_is_active());
+    findmy_main_update_interval(app->findmy_main, app->state.broadcast_interval);
+    findmy_main_update_type(app->findmy_main, findmy_data_get_type(app->state.data));
+
+    return app;
+}
+
+static void findmy_app_free(FindMy* app) {
+    furi_assert(app);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewPopup);
+    popup_free(app->popup);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewVarItemList);
+    variable_item_list_free(app->var_item_list);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewByteInput);
+    byte_input_free(app->byte_input);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewMain);
+    findmy_main_free(app->findmy_main);
+
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    furi_record_close(RECORD_DIALOGS);
+    furi_record_close(RECORD_STORAGE);
+    furi_record_close(RECORD_GUI);
+
+    free(app);
+}
+
+int32_t findmy_main(void* p) {
+    UNUSED(p);
+    FindMy* app = findmy_app_alloc();
+
+    scene_manager_next_scene(app->scene_manager, FindMySceneMain);
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    findmy_app_free(app);
+    return 0;
+}
+
+void findmy_change_broadcast_interval(FindMy* app, uint8_t value) {
+    if(value > 10 || value < 1) {
+        return;
+    }
+    app->state.broadcast_interval = value;
+    findmy_state_sync_config(&app->state);
+    findmy_state_save(&app->state);
+    findmy_main_update_interval(app->findmy_main, app->state.broadcast_interval);
+    if(furi_hal_bt_extra_beacon_is_active()) {
+        // Always check if beacon is active before changing config
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+    furi_check(furi_hal_bt_extra_beacon_set_config(&app->state.config));
+    if(app->state.beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+}
+
+void findmy_change_transmit_power(FindMy* app, uint8_t value) {
+    if(value > 6) {
+        return;
+    }
+    app->state.transmit_power = value;
+    findmy_state_sync_config(&app->state);
+    findmy_state_save(&app->state);
+    if(furi_hal_bt_extra_beacon_is_active()) {
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+    furi_check(furi_hal_bt_extra_beacon_set_config(&app->state.config));
+    if(app->state.beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+}
+
+void findmy_toggle_beacon(FindMy* app) {
+    app->state.beacon_active = !app->state.beacon_active;
+    findmy_state_save(&app->state);
+    if(furi_hal_bt_extra_beacon_is_active()) {
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+    if(app->state.beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+    findmy_main_update_active(app->findmy_main, furi_hal_bt_extra_beacon_is_active());
+}
+
+FindMyType findmy_data_get_type(uint8_t data[EXTRA_BEACON_MAX_DATA_SIZE]) {
+    if(data[0] == 0x1E && // Length
+       data[1] == 0xFF && // Manufacturer Specific Data
+       data[2] == 0x4C && // Company ID (Apple, Inc.)
+       data[3] == 0x00 && // ...
+       data[4] == 0x12 && // Type (FindMy)
+       data[5] == 0x19 // Length
+    ) {
+        return FindMyTypeApple;
+    } else {
+        return FindMyTypeSamsung;
+    }
+}

base_pack/find_my_flipper/findmy.h

@@ -0,0 +1,5 @@
+#pragma once
+
+typedef struct FindMy FindMy;
+
+typedef enum FindMyType FindMyType;

base_pack/find_my_flipper/findmy_i.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include "findmy.h"
+#include "findmy_state.h"
+#include <furi_hal_bt.h>
+#include <extra_beacon.h>
+#include "findmy_icons.h"
+#include <toolbox/stream/file_stream.h>
+#include <toolbox/hex.h>
+#include <toolbox/path.h>
+#include <gui/gui.h>
+#include <storage/storage.h>
+#include <dialogs/dialogs.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+#include "views/findmy_main.h"
+#include <gui/modules/byte_input.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/modules/popup.h>
+#include "scenes/findmy_scene.h"
+#include "helpers/base64.h"
+
+struct FindMy {
+    Gui* gui;
+    Storage* storage;
+    DialogsApp* dialogs;
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+
+    FindMyMain* findmy_main;
+    ByteInput* byte_input;
+    VariableItemList* var_item_list;
+    Popup* popup;
+
+    uint8_t mac_buf[EXTRA_BEACON_MAC_ADDR_SIZE];
+    uint8_t packet_buf[EXTRA_BEACON_MAX_DATA_SIZE];
+
+    FindMyState state;
+};
+
+typedef enum {
+    FindMyViewMain,
+    FindMyViewByteInput,
+    FindMyViewVarItemList,
+    FindMyViewPopup,
+} FindMyView;
+
+enum FindMyType {
+    FindMyTypeApple,
+    FindMyTypeSamsung,
+};
+
+void findmy_change_broadcast_interval(FindMy* app, uint8_t value);
+void findmy_change_transmit_power(FindMy* app, uint8_t value);
+void findmy_toggle_beacon(FindMy* app);
+FindMyType findmy_data_get_type(uint8_t data[EXTRA_BEACON_MAX_DATA_SIZE]);

base_pack/find_my_flipper/findmy_state.c

@@ -0,0 +1,130 @@
+#include "findmy_state.h"
+
+#include <string.h>
+#include <stddef.h>
+#include <furi_hal_bt.h>
+#include <flipper_format/flipper_format.h>
+
+bool findmy_state_load(FindMyState* out_state) {
+    FindMyState state;
+
+    // Try to load from file
+    bool loaded_from_file = false;
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    if(storage_file_exists(storage, FINDMY_STATE_PATH)) {
+        FlipperFormat* file = flipper_format_file_alloc(storage);
+        do {
+            uint32_t tmp;
+            FuriString* str = furi_string_alloc();
+            if(!flipper_format_file_open_existing(file, FINDMY_STATE_PATH)) break;
+            if(!flipper_format_read_header(file, str, &tmp)) break;
+            if(furi_string_cmp_str(str, FINDMY_STATE_HEADER)) break;
+            if(tmp != FINDMY_STATE_VER) break;
+
+            if(!flipper_format_read_bool(file, "beacon_active", &state.beacon_active, 1)) break;
+
+            if(!flipper_format_read_uint32(file, "broadcast_interval", &tmp, 1)) break;
+            state.broadcast_interval = tmp;
+
+            if(!flipper_format_read_uint32(file, "transmit_power", &tmp, 1)) break;
+            state.transmit_power = tmp;
+
+            if(!flipper_format_read_hex(file, "mac", state.mac, sizeof(state.mac))) break;
+
+            if(!flipper_format_read_hex(file, "data", state.data, sizeof(state.data))) break;
+
+            loaded_from_file = true;
+        } while(0);
+        flipper_format_free(file);
+    }
+    furi_record_close(RECORD_STORAGE);
+
+    // Otherwise set default values
+    if(!loaded_from_file) {
+        state.beacon_active = false;
+        state.broadcast_interval = 5;
+        state.transmit_power = 6;
+
+        // Set default mac
+        uint8_t default_mac[EXTRA_BEACON_MAC_ADDR_SIZE] = {0x66, 0x55, 0x44, 0x33, 0x22, 0x11};
+        memcpy(state.mac, default_mac, sizeof(state.mac));
+
+        // Set default empty AirTag data
+        uint8_t* data = state.data;
+        *data++ = 0x1E; // Length
+        *data++ = 0xFF; // Manufacturer Specific Data
+        *data++ = 0x4C; // Company ID (Apple, Inc.)
+        *data++ = 0x00; // ...
+        *data++ = 0x12; // Type (FindMy)
+        *data++ = 0x19; // Length
+        *data++ = 0x00; // Status
+        // Placeholder Empty Public Key without the MAC address
+        for(size_t i = 0; i < 22; ++i) {
+            *data++ = 0x00;
+        }
+        *data++ = 0x00; // First 2 bits are the version, the rest is the battery level
+        *data++ = 0x00; // Hint (0x00)
+    }
+
+    // Sync values to config
+    findmy_state_sync_config(&state);
+
+    // Set constants
+    state.config.adv_channel_map = GapAdvChannelMapAll;
+    state.config.address_type = GapAddressTypePublic;
+
+    // Copy to caller state before popping stack
+    memcpy(out_state, &state, sizeof(state));
+
+    // Return if active, can be used to start after loading in an if statement
+    return state.beacon_active;
+}
+
+void findmy_state_apply(FindMyState* state) {
+    // Stop any running beacon
+    if(furi_hal_bt_extra_beacon_is_active()) {
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+
+    furi_check(furi_hal_bt_extra_beacon_set_config(&state->config));
+
+    furi_check(furi_hal_bt_extra_beacon_set_data(state->data, sizeof(state->data)));
+
+    if(state->beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+}
+
+void findmy_state_sync_config(FindMyState* state) {
+    state->config.min_adv_interval_ms = state->broadcast_interval * 1000; // Converting s to ms
+    state->config.max_adv_interval_ms = (state->broadcast_interval * 1000) + 150;
+    state->config.adv_power_level = GapAdvPowerLevel_0dBm + state->transmit_power;
+    memcpy(state->config.address, state->mac, sizeof(state->config.address));
+}
+
+void findmy_state_save(FindMyState* state) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    storage_simply_mkdir(storage, FINDMY_STATE_DIR);
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        uint32_t tmp;
+        if(!flipper_format_file_open_always(file, FINDMY_STATE_PATH)) break;
+        if(!flipper_format_write_header_cstr(file, FINDMY_STATE_HEADER, FINDMY_STATE_VER)) break;
+
+        if(!flipper_format_write_bool(file, "beacon_active", &state->beacon_active, 1)) break;
+
+        tmp = state->broadcast_interval;
+        if(!flipper_format_write_uint32(file, "broadcast_interval", &tmp, 1)) break;
+
+        tmp = state->transmit_power;
+        if(!flipper_format_write_uint32(file, "transmit_power", &tmp, 1)) break;
+
+        if(!flipper_format_write_hex(file, "mac", state->mac, sizeof(state->mac))) break;
+
+        if(!flipper_format_write_hex(file, "data", state->data, sizeof(state->data))) break;
+    } while(0);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+}

base_pack/find_my_flipper/findmy_state.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <extra_beacon.h>
+
+#define FINDMY_STATE_HEADER "FindMy Flipper State"
+#define FINDMY_STATE_VER 1
+#define FINDMY_STATE_DIR EXT_PATH("apps_data/findmy")
+#define FINDMY_STATE_PATH FINDMY_STATE_DIR "/findmy_state.txt"
+
+typedef struct {
+    bool beacon_active;
+    uint8_t broadcast_interval;
+    uint8_t transmit_power;
+
+    uint8_t mac[EXTRA_BEACON_MAC_ADDR_SIZE];
+    uint8_t data[EXTRA_BEACON_MAX_DATA_SIZE];
+
+    // Generated from the other state values
+    GapExtraBeaconConfig config;
+} FindMyState;
+
+bool findmy_state_load(FindMyState* out_state);
+
+void findmy_state_apply(FindMyState* state);
+
+void findmy_state_sync_config(FindMyState* state);
+
+void findmy_state_save(FindMyState* state);

base_pack/find_my_flipper/helpers/base64.c

@@ -0,0 +1,141 @@
+/*
+ * Base64 encoding/decoding (RFC1341)
+ * Copyright (c) 2005-2011, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+// https://web.mit.edu/freebsd/head/contrib/wpa/src/utils/base64.c
+
+#include "base64.h"
+
+#define os_malloc malloc
+#define os_free free
+#define os_memset memset
+
+static const unsigned char base64_table[65] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/**
+ * base64_encode - Base64 encode
+ * @src: Data to be encoded
+ * @len: Length of the data to be encoded
+ * @out_len: Pointer to output length variable, or %NULL if not used
+ * Returns: Allocated buffer of out_len bytes of encoded data,
+ * or %NULL on failure
+ *
+ * Caller is responsible for freeing the returned buffer. Returned buffer is
+ * nul terminated to make it easier to use as a C string. The nul terminator is
+ * not included in out_len.
+ */
+unsigned char* base64_encode(const unsigned char* src, size_t len, size_t* out_len) {
+    unsigned char *out, *pos;
+    const unsigned char *end, *in;
+    size_t olen;
+    int line_len;
+
+    olen = len * 4 / 3 + 4; /* 3-byte blocks to 4-byte */
+    olen += olen / 72; /* line feeds */
+    olen++; /* nul termination */
+    if(olen < len) return NULL; /* integer overflow */
+    out = os_malloc(olen);
+    if(out == NULL) return NULL;
+
+    end = src + len;
+    in = src;
+    pos = out;
+    line_len = 0;
+    while(end - in >= 3) {
+        *pos++ = base64_table[in[0] >> 2];
+        *pos++ = base64_table[((in[0] & 0x03) << 4) | (in[1] >> 4)];
+        *pos++ = base64_table[((in[1] & 0x0f) << 2) | (in[2] >> 6)];
+        *pos++ = base64_table[in[2] & 0x3f];
+        in += 3;
+        line_len += 4;
+        if(line_len >= 72) {
+            *pos++ = '\n';
+            line_len = 0;
+        }
+    }
+
+    if(end - in) {
+        *pos++ = base64_table[in[0] >> 2];
+        if(end - in == 1) {
+            *pos++ = base64_table[(in[0] & 0x03) << 4];
+            *pos++ = '=';
+        } else {
+            *pos++ = base64_table[((in[0] & 0x03) << 4) | (in[1] >> 4)];
+            *pos++ = base64_table[(in[1] & 0x0f) << 2];
+        }
+        *pos++ = '=';
+        line_len += 4;
+    }
+
+    if(line_len) *pos++ = '\n';
+
+    *pos = '\0';
+    if(out_len) *out_len = pos - out;
+    return out;
+}
+
+/**
+ * base64_decode - Base64 decode
+ * @src: Data to be decoded
+ * @len: Length of the data to be decoded
+ * @out_len: Pointer to output length variable
+ * Returns: Allocated buffer of out_len bytes of decoded data,
+ * or %NULL on failure
+ *
+ * Caller is responsible for freeing the returned buffer.
+ */
+unsigned char* base64_decode(const unsigned char* src, size_t len, size_t* out_len) {
+    unsigned char dtable[256], *out, *pos, block[4], tmp;
+    size_t i, count, olen;
+    int pad = 0;
+
+    os_memset(dtable, 0x80, 256);
+    for(i = 0; i < sizeof(base64_table) - 1; i++) dtable[base64_table[i]] = (unsigned char)i;
+    dtable['='] = 0;
+
+    count = 0;
+    for(i = 0; i < len; i++) {
+        if(dtable[src[i]] != 0x80) count++;
+    }
+
+    if(count == 0 || count % 4) return NULL;
+
+    olen = count / 4 * 3;
+    pos = out = os_malloc(olen);
+    if(out == NULL) return NULL;
+
+    count = 0;
+    for(i = 0; i < len; i++) {
+        tmp = dtable[src[i]];
+        if(tmp == 0x80) continue;
+
+        if(src[i] == '=') pad++;
+        block[count] = tmp;
+        count++;
+        if(count == 4) {
+            *pos++ = (block[0] << 2) | (block[1] >> 4);
+            *pos++ = (block[1] << 4) | (block[2] >> 2);
+            *pos++ = (block[2] << 6) | block[3];
+            count = 0;
+            if(pad) {
+                if(pad == 1)
+                    pos--;
+                else if(pad == 2)
+                    pos -= 2;
+                else {
+                    /* Invalid padding */
+                    os_free(out);
+                    return NULL;
+                }
+                break;
+            }
+        }
+    }
+
+    *out_len = pos - out;
+    return out;
+}

base_pack/find_my_flipper/helpers/base64.h

@@ -0,0 +1,21 @@
+/*
+ * Base64 encoding/decoding (RFC1341)
+ * Copyright (c) 2005, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+// https://web.mit.edu/freebsd/head/contrib/wpa/src/utils/base64.h
+
+#ifndef BASE64_H
+#define BASE64_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+unsigned char* base64_encode(const unsigned char* src, size_t len, size_t* out_len);
+unsigned char* base64_decode(const unsigned char* src, size_t len, size_t* out_len);
+
+#endif /* BASE64_H */

base_pack/find_my_flipper/scenes/findmy_scene.c

@@ -0,0 +1,31 @@
+#include "findmy_scene.h"
+#include "findmy.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const findmy_on_enter_handlers[])(void*) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const findmy_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const findmy_on_exit_handlers[])(void* context) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers findmy_scene_handlers = {
+    .on_enter_handlers = findmy_on_enter_handlers,
+    .on_event_handlers = findmy_on_event_handlers,
+    .on_exit_handlers = findmy_on_exit_handlers,
+    .scene_num = FindMySceneNum,
+};

base_pack/find_my_flipper/scenes/findmy_scene.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+#include "findmy.h"
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) FindMyScene##id,
+typedef enum {
+#include "findmy_scenes.h"
+    FindMySceneNum,
+} FindMyScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers findmy_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "findmy_scenes.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "findmy_scenes.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "findmy_scenes.h"
+#undef ADD_SCENE

base_pack/find_my_flipper/scenes/findmy_scene_config.c

@@ -0,0 +1,110 @@
+#include "../findmy_i.h"
+
+enum VarItemListIndex {
+    VarItemListIndexBroadcastInterval,
+    VarItemListIndexTransmitPower,
+    VarItemListIndexImportTagFromFile,
+    VarItemListIndexRegisterTagManually,
+    VarItemListIndexAbout,
+};
+
+void findmy_scene_config_broadcast_interval_changed(VariableItem* item) {
+    FindMy* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    findmy_change_broadcast_interval(app, index + 1);
+    char str[5];
+    snprintf(str, sizeof(str), "%ds", app->state.broadcast_interval);
+    variable_item_set_current_value_text(item, str);
+    variable_item_set_current_value_index(item, app->state.broadcast_interval - 1);
+}
+
+void findmy_scene_config_transmit_power_changed(VariableItem* item) {
+    FindMy* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    findmy_change_transmit_power(app, index);
+    char str[7];
+    snprintf(str, sizeof(str), "%ddBm", app->state.transmit_power);
+    variable_item_set_current_value_text(item, str);
+    variable_item_set_current_value_index(item, app->state.transmit_power);
+}
+
+void findmy_scene_config_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    FindMy* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void findmy_scene_config_on_enter(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+    VariableItem* item;
+
+    item = variable_item_list_add(
+        var_item_list,
+        "Broadcast Interval",
+        10,
+        findmy_scene_config_broadcast_interval_changed,
+        app);
+    // Broadcast Interval is 1-10, so use 0-9 and offset indexes by 1
+    variable_item_set_current_value_index(item, app->state.broadcast_interval - 1);
+    char interval_str[5];
+    snprintf(interval_str, sizeof(interval_str), "%ds", app->state.broadcast_interval);
+    variable_item_set_current_value_text(item, interval_str);
+
+    item = variable_item_list_add(
+        var_item_list, "Transmit Power", 7, findmy_scene_config_transmit_power_changed, app);
+    variable_item_set_current_value_index(item, app->state.transmit_power);
+    char power_str[7];
+    snprintf(power_str, sizeof(power_str), "%ddBm", app->state.transmit_power);
+    variable_item_set_current_value_text(item, power_str);
+
+    item = variable_item_list_add(var_item_list, "Import Tag From File", 0, NULL, NULL);
+
+    item = variable_item_list_add(var_item_list, "Register Tag Manually", 0, NULL, NULL);
+
+    item = variable_item_list_add(
+        var_item_list,
+        "Matthew KuKanich, Thanks to Chapoly1305, WillyJL, OpenHaystack, Testers",
+        1,
+        NULL,
+        NULL);
+    variable_item_set_current_value_text(item, "Credits");
+
+    variable_item_list_set_enter_callback(var_item_list, findmy_scene_config_callback, app);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, FindMySceneConfig));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewVarItemList);
+}
+
+bool findmy_scene_config_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_set_scene_state(app->scene_manager, FindMySceneConfig, event.event);
+        consumed = true;
+        switch(event.event) {
+        case VarItemListIndexImportTagFromFile:
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigImport);
+            break;
+        case VarItemListIndexRegisterTagManually:
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigMac);
+            break;
+        case VarItemListIndexAbout:
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_on_exit(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+
+    variable_item_list_reset(var_item_list);
+}

base_pack/find_my_flipper/scenes/findmy_scene_config_import.c

@@ -0,0 +1,220 @@
+#include "../findmy_i.h"
+
+enum VarItemListIndex {
+    VarItemListIndexNrfConnect,
+    VarItemListIndexOpenHaystack,
+};
+
+static const char* parse_nrf_connect(FindMy* app, const char* path) {
+    const char* error = NULL;
+
+    Stream* stream = file_stream_alloc(app->storage);
+    FuriString* line = furi_string_alloc();
+    do {
+        // XX-XX-XX-XX-XX-XX_YYYY-MM-DD HH_MM_SS.txt
+        error = "Filename must\nhave MAC\naddress";
+        uint8_t mac[EXTRA_BEACON_MAC_ADDR_SIZE];
+        path_extract_filename_no_ext(path, line);
+        if(furi_string_size(line) < sizeof(mac) * 3 - 1) break;
+        error = NULL;
+        for(size_t i = 0; i < sizeof(mac); i++) {
+            char a = furi_string_get_char(line, i * 3);
+            char b = furi_string_get_char(line, i * 3 + 1);
+            if((a < 'A' && a > 'F') || (a < '0' && a > '9') || (b < 'A' && b > 'F') ||
+               (b < '0' && b > '9') || !hex_char_to_uint8(a, b, &mac[i])) {
+                error = "Filename must\nhave MAC\naddress";
+                break;
+            }
+        }
+        if(error) break;
+        furi_hal_bt_reverse_mac_addr(mac);
+
+        error = "Can't open file";
+        if(!file_stream_open(stream, path, FSAM_READ, FSOM_OPEN_EXISTING)) break;
+
+        // YYYY-MM-DD HH:MM:SS.ms, XX dBm, 0xXXXXX
+        error = "Wrong file format";
+        if(!stream_read_line(stream, line)) break;
+        const char* marker = " dBm, 0x";
+        size_t pos = furi_string_search(line, marker);
+        if(pos == FURI_STRING_FAILURE) break;
+        furi_string_right(line, pos + strlen(marker));
+        furi_string_trim(line);
+
+        error = "Wrong payload size";
+        uint8_t data[EXTRA_BEACON_MAX_DATA_SIZE];
+        if(furi_string_size(line) != sizeof(data) * 2) break;
+        error = NULL;
+        for(size_t i = 0; i < sizeof(data); i++) {
+            char a = furi_string_get_char(line, i * 2);
+            char b = furi_string_get_char(line, i * 2 + 1);
+            if((a < 'A' && a > 'F') || (a < '0' && a > '9') || (b < 'A' && b > 'F') ||
+               (b < '0' && b > '9') || !hex_char_to_uint8(a, b, &data[i])) {
+                error = "Invalid payload";
+                break;
+            }
+        }
+        if(error) break;
+
+        memcpy(app->state.mac, mac, sizeof(app->state.mac));
+        memcpy(app->state.data, data, sizeof(app->state.data));
+        findmy_state_sync_config(&app->state);
+        findmy_state_save(&app->state);
+
+        error = NULL;
+
+    } while(false);
+    furi_string_free(line);
+    file_stream_close(stream);
+    stream_free(stream);
+
+    return error;
+}
+
+static const char* parse_open_haystack(FindMy* app, const char* path) {
+    const char* error = NULL;
+
+    Stream* stream = file_stream_alloc(app->storage);
+    FuriString* line = furi_string_alloc();
+    do {
+        error = "Can't open file";
+        if(!file_stream_open(stream, path, FSAM_READ, FSOM_OPEN_EXISTING)) break;
+
+        error = "Wrong file format";
+        while(stream_read_line(stream, line)) {
+            if(furi_string_start_with(line, "Public key: ") ||
+               furi_string_start_with(line, "Advertisement key: ")) {
+                error = NULL;
+                break;
+            }
+        }
+        if(error) break;
+
+        furi_string_right(line, furi_string_search_char(line, ':') + 2);
+        furi_string_trim(line);
+
+        error = "Base64 failed";
+        size_t decoded_len;
+        uint8_t* public_key = base64_decode(
+            (uint8_t*)furi_string_get_cstr(line), furi_string_size(line), &decoded_len);
+        if(decoded_len != 28) {
+            free(public_key);
+            break;
+        }
+
+        memcpy(app->state.mac, public_key, sizeof(app->state.mac));
+        app->state.mac[0] |= 0b11000000;
+        furi_hal_bt_reverse_mac_addr(app->state.mac);
+
+        uint8_t advertisement_template[EXTRA_BEACON_MAX_DATA_SIZE] = {
+            0x1e, // length (30)
+            0xff, // manufacturer specific data
+            0x4c, 0x00, // company ID (Apple)
+            0x12, 0x19, // offline finding type and length
+            0x00, //state
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, // first two bits of key[0]
+            0x00, // hint
+        };
+        memcpy(app->state.data, advertisement_template, sizeof(app->state.data));
+        memcpy(&app->state.data[7], &public_key[6], decoded_len - 6);
+        app->state.data[29] = public_key[0] >> 6;
+        findmy_state_sync_config(&app->state);
+        findmy_state_save(&app->state);
+
+        free(public_key);
+        error = NULL;
+
+    } while(false);
+    furi_string_free(line);
+    file_stream_close(stream);
+    stream_free(stream);
+
+    return error;
+}
+
+void findmy_scene_config_import_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    FindMy* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void findmy_scene_config_import_on_enter(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+    VariableItem* item;
+
+    item = variable_item_list_add(var_item_list, "nRF Connect .txt", 0, NULL, NULL);
+
+    item = variable_item_list_add(var_item_list, "OpenHaystack .keys", 0, NULL, NULL);
+
+    // This scene acts more like a submenu than a var item list tbh
+    UNUSED(item);
+
+    variable_item_list_set_enter_callback(var_item_list, findmy_scene_config_import_callback, app);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, FindMySceneConfigImport));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewVarItemList);
+}
+
+bool findmy_scene_config_import_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_set_scene_state(app->scene_manager, FindMySceneConfigImport, event.event);
+        consumed = true;
+
+        const char* extension = NULL;
+        switch(event.event) {
+        case VarItemListIndexNrfConnect:
+            extension = ".txt";
+            break;
+        case VarItemListIndexOpenHaystack:
+            extension = ".keys";
+            break;
+        default:
+            break;
+        }
+        if(!extension) {
+            return consumed;
+        }
+
+        const DialogsFileBrowserOptions browser_options = {
+            .extension = extension,
+            .icon = &I_text_10px,
+            .base_path = FINDMY_STATE_DIR,
+        };
+        storage_simply_mkdir(app->storage, browser_options.base_path);
+        FuriString* path = furi_string_alloc_set_str(browser_options.base_path);
+        if(dialog_file_browser_show(app->dialogs, path, path, &browser_options)) {
+            // The parse functions return the error text, or NULL for success
+            // Used in result to show success or error message
+            const char* error = NULL;
+            switch(event.event) {
+            case VarItemListIndexNrfConnect:
+                error = parse_nrf_connect(app, furi_string_get_cstr(path));
+                break;
+            case VarItemListIndexOpenHaystack:
+                error = parse_open_haystack(app, furi_string_get_cstr(path));
+                break;
+            }
+            scene_manager_set_scene_state(
+                app->scene_manager, FindMySceneConfigImportResult, (uint32_t)error);
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigImportResult);
+        }
+        furi_string_free(path);
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_import_on_exit(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+
+    variable_item_list_reset(var_item_list);
+}

base_pack/find_my_flipper/scenes/findmy_scene_config_import_result.c

@@ -0,0 +1,58 @@
+#include "../findmy_i.h"
+
+enum PopupEvent {
+    PopupEventExit,
+};
+
+static void findmy_scene_config_import_result_callback(void* context) {
+    FindMy* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, PopupEventExit);
+}
+
+void findmy_scene_config_import_result_on_enter(void* context) {
+    FindMy* app = context;
+    Popup* popup = app->popup;
+
+    const char* error = (const char*)scene_manager_get_scene_state(
+        app->scene_manager, FindMySceneConfigImportResult);
+    if(error) {
+        popup_set_icon(popup, 83, 22, &I_WarningDolphinFlip_45x42);
+        popup_set_header(popup, "Error!", 13, 22, AlignLeft, AlignBottom);
+        popup_set_text(popup, error, 6, 26, AlignLeft, AlignTop);
+        popup_disable_timeout(popup);
+    } else {
+        popup_set_icon(popup, 36, 5, &I_DolphinDone_80x58);
+        popup_set_header(popup, "Imported!", 7, 14, AlignLeft, AlignBottom);
+        popup_enable_timeout(popup);
+    }
+    popup_set_timeout(popup, 1500);
+    popup_set_context(popup, app);
+    popup_set_callback(popup, findmy_scene_config_import_result_callback);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewPopup);
+}
+
+bool findmy_scene_config_import_result_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        switch(event.event) {
+        case PopupEventExit:
+            scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, FindMySceneConfig);
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_import_result_on_exit(void* context) {
+    FindMy* app = context;
+    popup_reset(app->popup);
+}

base_pack/find_my_flipper/scenes/findmy_scene_config_mac.c

@@ -0,0 +1,67 @@
+#include "../findmy_i.h"
+
+enum ByteInputResult {
+    ByteInputResultOk,
+};
+
+static void findmy_scene_config_mac_callback(void* context) {
+    FindMy* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, ByteInputResultOk);
+}
+
+void findmy_scene_config_mac_on_enter(void* context) {
+    FindMy* app = context;
+    ByteInput* byte_input = app->byte_input;
+
+    byte_input_set_header_text(byte_input, "Enter Bluetooth MAC:");
+
+    memcpy(app->mac_buf, app->state.mac, sizeof(app->mac_buf));
+    furi_hal_bt_reverse_mac_addr(app->mac_buf);
+
+    byte_input_set_result_callback(
+        byte_input,
+        findmy_scene_config_mac_callback,
+        NULL,
+        app,
+        app->mac_buf,
+        sizeof(app->mac_buf));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewByteInput);
+}
+
+bool findmy_scene_config_mac_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        switch(event.event) {
+        case ByteInputResultOk:
+            furi_hal_bt_reverse_mac_addr(app->mac_buf);
+            memcpy(&app->state.mac, app->mac_buf, sizeof(app->state.mac));
+            findmy_state_sync_config(&app->state);
+            findmy_state_save(&app->state);
+            if(furi_hal_bt_extra_beacon_is_active()) {
+                furi_check(furi_hal_bt_extra_beacon_stop());
+            }
+            furi_check(furi_hal_bt_extra_beacon_set_config(&app->state.config));
+            if(app->state.beacon_active) {
+                furi_check(furi_hal_bt_extra_beacon_start());
+            }
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigPacket);
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_mac_on_exit(void* context) {
+    FindMy* app = context;
+
+    byte_input_set_result_callback(app->byte_input, NULL, NULL, NULL, NULL, 0);
+    byte_input_set_header_text(app->byte_input, "");
+}

base_pack/find_my_flipper/scenes/findmy_scene_config_packet.c

@@ -0,0 +1,61 @@
+#include "../findmy_i.h"
+
+enum ByteInputResult {
+    ByteInputResultOk,
+};
+
+static void findmy_scene_config_packet_callback(void* context) {
+    FindMy* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, ByteInputResultOk);
+}
+
+void findmy_scene_config_packet_on_enter(void* context) {
+    FindMy* app = context;
+    ByteInput* byte_input = app->byte_input;
+
+    byte_input_set_header_text(byte_input, "Enter Bluetooth Payload:");
+
+    memcpy(app->packet_buf, app->state.data, sizeof(app->packet_buf));
+
+    byte_input_set_result_callback(
+        byte_input,
+        findmy_scene_config_packet_callback,
+        NULL,
+        app,
+        app->packet_buf,
+        sizeof(app->packet_buf));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewByteInput);
+}
+
+bool findmy_scene_config_packet_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        switch(event.event) {
+        case ByteInputResultOk:
+            scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, FindMySceneConfig);
+            memcpy(app->state.data, app->packet_buf, sizeof(app->state.data));
+            findmy_state_save(&app->state);
+            furi_check(
+                furi_hal_bt_extra_beacon_set_data(app->state.data, sizeof(app->state.data)));
+            findmy_main_update_type(app->findmy_main, findmy_data_get_type(app->state.data));
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_packet_on_exit(void* context) {
+    FindMy* app = context;
+
+    byte_input_set_result_callback(app->byte_input, NULL, NULL, NULL, NULL, 0);
+    byte_input_set_header_text(app->byte_input, "");
+}

base_pack/find_my_flipper/scenes/findmy_scene_main.c

@@ -0,0 +1,63 @@
+#include "../findmy_i.h"
+
+void findmy_scene_main_callback(FindMyMainEvent event, void* context) {
+    furi_assert(context);
+    FindMy* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, event);
+}
+
+void findmy_scene_main_on_enter(void* context) {
+    FindMy* app = context;
+
+    findmy_main_set_callback(app->findmy_main, findmy_scene_main_callback, app);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewMain);
+}
+
+bool findmy_scene_main_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        switch(event.event) {
+        case FindMyMainEventToggle:
+            findmy_toggle_beacon(app);
+            break;
+        case FindMyMainEventBackground:
+            app->state.beacon_active = true;
+            findmy_state_save(&app->state);
+            if(!furi_hal_bt_extra_beacon_is_active()) {
+                furi_check(furi_hal_bt_extra_beacon_start());
+            }
+            view_dispatcher_stop(app->view_dispatcher);
+            break;
+        case FindMyMainEventConfig:
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfig);
+            break;
+        case FindMyMainEventIntervalUp:
+            findmy_change_broadcast_interval(app, app->state.broadcast_interval + 1);
+            break;
+        case FindMyMainEventIntervalDown:
+            findmy_change_broadcast_interval(app, app->state.broadcast_interval - 1);
+            break;
+        case FindMyMainEventQuit:
+            app->state.beacon_active = false;
+            findmy_state_save(&app->state);
+            if(furi_hal_bt_extra_beacon_is_active()) {
+                furi_check(furi_hal_bt_extra_beacon_stop());
+            }
+            break;
+        default:
+            consumed = false;
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_main_on_exit(void* context) {
+    FindMy* app = context;
+    UNUSED(app);
+}

base_pack/find_my_flipper/scenes/findmy_scenes.h

@@ -0,0 +1,6 @@
+ADD_SCENE(findmy, main, Main)
+ADD_SCENE(findmy, config, Config)
+ADD_SCENE(findmy, config_import, ConfigImport)
+ADD_SCENE(findmy, config_import_result, ConfigImportResult)
+ADD_SCENE(findmy, config_mac, ConfigMac)
+ADD_SCENE(findmy, config_packet, ConfigPacket)

base_pack/find_my_flipper/views/findmy_main.c

@@ -0,0 +1,150 @@
+#include "findmy_main.h"
+#include "../findmy_i.h"
+
+struct FindMyMain {
+    View* view;
+    FindMyMainCallback callback;
+    void* context;
+};
+
+typedef struct {
+    bool active;
+    uint8_t interval;
+    FindMyType type;
+} FindMyMainModel;
+
+static void findmy_main_draw_callback(Canvas* canvas, void* _model) {
+    FindMyMainModel* model = _model;
+    canvas_clear(canvas);
+    canvas_set_bitmap_mode(canvas, true);
+    canvas_set_font(canvas, FontPrimary);
+
+    canvas_draw_str(canvas, 4, 11, "FindMy Flipper");
+    canvas_set_font(canvas, FontSecondary);
+    if(model->active) {
+        canvas_draw_str(canvas, 4, 49, "Broadcast Active");
+        canvas_draw_icon(canvas, 78, 42, &I_Ok_btn_9x9);
+    } else {
+        canvas_draw_str(canvas, 4, 49, "Broadcast Inactive");
+    }
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 4, 21, "Press <- to run in background");
+    canvas_set_font(canvas, FontSecondary);
+    char interval_str[20];
+    snprintf(interval_str, sizeof(interval_str), "Ping Interval: %ds", model->interval);
+    canvas_draw_str(canvas, 4, 62, interval_str);
+    canvas_set_font(canvas, FontPrimary);
+    switch(model->type) {
+    case FindMyTypeApple:
+        canvas_draw_str(canvas, 4, 32, "Apple Network");
+        canvas_draw_icon(canvas, 80, 24, &I_Lock_7x8);
+        break;
+    case FindMyTypeSamsung:
+        canvas_draw_str(canvas, 4, 32, "Samsung Network");
+        canvas_draw_icon(canvas, 97, 24, &I_Lock_7x8);
+        break;
+    default:
+        break;
+    }
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 100, 61, "Config");
+    canvas_draw_line(canvas, 100, 51, 127, 51);
+    canvas_draw_line(canvas, 97, 53, 97, 63);
+    canvas_draw_line(canvas, 97, 53, 99, 51);
+    canvas_draw_line(canvas, 3, 52, 87, 52);
+}
+
+static bool findmy_main_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    FindMyMain* findmy_main = context;
+    bool consumed = false;
+
+    if(event->type == InputTypePress) {
+        consumed = true;
+        FindMyMainEvent cb_event;
+
+        switch(event->key) {
+        case InputKeyBack:
+            cb_event = FindMyMainEventQuit;
+            break;
+        case InputKeyOk:
+            cb_event = FindMyMainEventToggle;
+            break;
+        case InputKeyLeft:
+            cb_event = FindMyMainEventBackground;
+            break;
+        case InputKeyRight:
+            cb_event = FindMyMainEventConfig;
+            break;
+        case InputKeyUp:
+            cb_event = FindMyMainEventIntervalUp;
+            break;
+        case InputKeyDown:
+            cb_event = FindMyMainEventIntervalDown;
+            break;
+        default:
+            return consumed;
+        }
+
+        findmy_main->callback(cb_event, findmy_main->context);
+    }
+
+    return consumed;
+}
+
+FindMyMain* findmy_main_alloc(FindMy* app) {
+    FindMyMain* findmy_main = malloc(sizeof(FindMyMain));
+
+    findmy_main->view = view_alloc();
+    view_allocate_model(findmy_main->view, ViewModelTypeLocking, sizeof(FindMyMainModel));
+    with_view_model(
+        findmy_main->view,
+        FindMyMainModel * model,
+        {
+            model->active = app->state.beacon_active;
+            model->interval = app->state.broadcast_interval;
+            model->type = findmy_data_get_type(app->state.data);
+        },
+        false);
+    view_set_context(findmy_main->view, findmy_main);
+    view_set_draw_callback(findmy_main->view, findmy_main_draw_callback);
+    view_set_input_callback(findmy_main->view, findmy_main_input_callback);
+
+    return findmy_main;
+}
+
+void findmy_main_free(FindMyMain* findmy_main) {
+    furi_assert(findmy_main);
+    view_free(findmy_main->view);
+    free(findmy_main);
+}
+
+View* findmy_main_get_view(FindMyMain* findmy_main) {
+    furi_assert(findmy_main);
+    return findmy_main->view;
+}
+
+void findmy_main_set_callback(FindMyMain* findmy_main, FindMyMainCallback callback, void* context) {
+    furi_assert(findmy_main);
+    furi_assert(callback);
+    findmy_main->callback = callback;
+    findmy_main->context = context;
+}
+
+void findmy_main_update_active(FindMyMain* findmy_main, bool active) {
+    furi_assert(findmy_main);
+    with_view_model(
+        findmy_main->view, FindMyMainModel * model, { model->active = active; }, true);
+}
+
+void findmy_main_update_interval(FindMyMain* findmy_main, uint8_t interval) {
+    furi_assert(findmy_main);
+    with_view_model(
+        findmy_main->view, FindMyMainModel * model, { model->interval = interval; }, true);
+}
+
+void findmy_main_update_type(FindMyMain* findmy_main, FindMyType type) {
+    furi_assert(findmy_main);
+    with_view_model(
+        findmy_main->view, FindMyMainModel * model, { model->type = type; }, true);
+}

base_pack/find_my_flipper/views/findmy_main.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "../findmy.h"
+#include <gui/view.h>
+
+typedef enum {
+    FindMyMainEventToggle,
+    FindMyMainEventBackground,
+    FindMyMainEventConfig,
+    FindMyMainEventIntervalUp,
+    FindMyMainEventIntervalDown,
+    FindMyMainEventQuit,
+} FindMyMainEvent;
+
+typedef struct FindMyMain FindMyMain;
+typedef void (*FindMyMainCallback)(FindMyMainEvent event, void* context);
+
+// Main functionality
+FindMyMain* findmy_main_alloc(FindMy* app);
+void findmy_main_free(FindMyMain* findmy_main);
+View* findmy_main_get_view(FindMyMain* findmy_main);
+
+// To communicate with scene
+void findmy_main_set_callback(FindMyMain* findmy_main, FindMyMainCallback callback, void* context);
+
+// To redraw when info changes
+void findmy_main_update_active(FindMyMain* findmy_main, bool active);
+void findmy_main_update_interval(FindMyMain* findmy_main, uint8_t interval);
+void findmy_main_update_type(FindMyMain* findmy_main, FindMyType type);