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Convert Thread+Handler to lifecycle-aware coroutines, add GPL-3.0 license

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eddy 2026-07-26 20:43:37 +02:00
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This is free and unencumbered software released into the public domain. GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
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<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

10
README.md
View file

@ -402,4 +402,12 @@ sylvia-touch-relay/
- De HMAC key wordt in de app opgeslagen via `EncryptedSharedPreferences` (AES256-GCM) via `PrefsHelper`. Dit versleutelt de key at-rest, in tegenstelling tot gewone SharedPreferences waarbij waarden plaintext op schijf staan. - De HMAC key wordt in de app opgeslagen via `EncryptedSharedPreferences` (AES256-GCM) via `PrefsHelper`. Dit versleutelt de key at-rest, in tegenstelling tot gewone SharedPreferences waarbij waarden plaintext op schijf staan.
- Bij geweigerde BLE-permissies wordt de HOLD-knop uitgeschakeld en toont de app "Permissies geweigerd — open Instellingen" met een link naar de systeem-instellingen. - Bij geweigerde BLE-permissies wordt de HOLD-knop uitgeschakeld en toont de app "Permissies geweigerd — open Instellingen" met een link naar de systeem-instellingen.
- De BLE-scan wordt in `onPause` betrouwbaar gestopt via `handler.removeCallbacks(scanRunnable)`, wat voorkomt dat scans doordraaien op de achtergrond. - De BLE-scan wordt in `onPause` betrouwbaar gestopt via `handler.removeCallbacks(scanRunnable)`, wat voorkomt dat scans doordraaien op de achtergrond.
- Het firmware flash-proces is annuleerbaar: `EspFlasher` gebruikt een `@Volatile cancelled` flag met checkpoints in de flash-lus. `SettingsActivity.onDestroy` roept `flasher?.cancel()` aan. - Het firmware flash-proces is annuleerbaar: `EspFlasher` gebruikt een `@Volatile cancelled` flag met checkpoints in de flash-lus. `SettingsActivity.onDestroy` roept `flasher?.cancel()` aan.
## Licentie
Dit project is gelicentieerd onder de **GNU General Public License v3.0 of later** (GPL-3.0-or-later).
Deze licentie is vereist omdat de app gebruik maakt van [`esp32-flash-lib`](https://github.com/dkaukov/esp32-flash) (GPL-3.0), een library voor het flashen van ESP32 firmware. De GPL-3.0 copyleft-clausule bepaalt dat een werk dat aan een GPL-3.0 werk linkt zelf ook onder GPL-3.0 (of een compatibele licentie) moet worden gedistribueerd.
Zie het `LICENSE` bestand voor de volledige licentietekst.

1
android/app/build.gradle
View file

@ -43,4 +43,5 @@ dependencies {
implementation 'com.eclipsesource.minimal-json:minimal-json:0.9.5' implementation 'com.eclipsesource.minimal-json:minimal-json:0.9.5'
implementation 'org.slf4j:slf4j-nop:2.0.16' implementation 'org.slf4j:slf4j-nop:2.0.16'
implementation 'androidx.security:security-crypto:1.1.0-alpha06' implementation 'androidx.security:security-crypto:1.1.0-alpha06'
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.7.0'
} }

67
android/app/src/main/java/com/eddy/atomrelay/EspFlasher.kt
View file

@ -1,15 +1,18 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.content.Context import android.content.Context
import android.hardware.usb.UsbConstants import android.hardware.usb.UsbConstants
import android.hardware.usb.UsbDevice import android.hardware.usb.UsbDevice
import android.hardware.usb.UsbManager import android.hardware.usb.UsbManager
import android.os.Handler
import android.os.Looper
import android.util.Log import android.util.Log
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.ensureActive
import kotlinx.coroutines.withContext
import org.dkaukov.esp32.core.EspFlasherApi import org.dkaukov.esp32.core.EspFlasherApi
import org.dkaukov.esp32.io.ProgressCallback import org.dkaukov.esp32.io.ProgressCallback
import java.io.IOException import java.io.IOException
import kotlin.coroutines.coroutineContext
class EspFlasher(private val context: Context) { class EspFlasher(private val context: Context) {
@ -19,12 +22,8 @@ class EspFlasher(private val context: Context) {
interface FlashCallback { interface FlashCallback {
fun onProgress(percent: Int, message: String) fun onProgress(percent: Int, message: String)
fun onComplete()
fun onError(message: String)
} }
private val handler = Handler(Looper.getMainLooper())
@Volatile @Volatile
private var cancelled = false private var cancelled = false
@ -32,16 +31,18 @@ class EspFlasher(private val context: Context) {
cancelled = true cancelled = true
} }
fun flashDevice(usbManager: UsbManager, device: UsbDevice, callback: FlashCallback) { suspend fun flashDevice(usbManager: UsbManager, device: UsbDevice, callback: FlashCallback) {
cancelled = false cancelled = false
Thread { try {
try { withContext(kotlinx.coroutines.Dispatchers.IO) {
doFlash(usbManager, device, callback) doFlash(usbManager, device, callback)
} catch (e: Exception) {
Log.e(TAG, "Flash failed", e)
handler.post { callback.onError(e.message ?: "Onbekende fout") }
} }
}.start() } catch (e: CancellationException) {
throw e
} catch (e: Exception) {
Log.e(TAG, "Flash failed", e)
throw e
}
} }
private class FlashStep( private class FlashStep(
@ -53,9 +54,9 @@ class EspFlasher(private val context: Context) {
val compress: Boolean val compress: Boolean
) )
private fun doFlash(usbManager: UsbManager, device: UsbDevice, callback: FlashCallback) { private suspend fun doFlash(usbManager: UsbManager, device: UsbDevice, callback: FlashCallback) {
Thread.sleep(500) kotlinx.coroutines.delay(500)
if (cancelled) return checkCancelled()
val connection = usbManager.openDevice(device) val connection = usbManager.openDevice(device)
?: throw IOException("Kan USB-apparaat niet openen") ?: throw IOException("Kan USB-apparaat niet openen")
@ -73,10 +74,10 @@ class EspFlasher(private val context: Context) {
val epIn = UsbUtils.findBulkEndpoint(intf, UsbConstants.USB_DIR_IN) val epIn = UsbUtils.findBulkEndpoint(intf, UsbConstants.USB_DIR_IN)
?: throw IOException("Geen USB IN endpoint gevonden") ?: throw IOException("Geen USB IN endpoint gevonden")
postProgress(callback, 0, "Verbinden met ESP bootloader...") callback.onProgress(0, "Verbinden met ESP bootloader...")
val transport = UsbSerialTransport(connection, epOut, epIn) val transport = UsbSerialTransport(connection, epOut, epIn)
if (cancelled) return checkCancelled()
val assets = context.assets val assets = context.assets
val bootloader = assets.open("firmware/bootloader.bin").readBytes() val bootloader = assets.open("firmware/bootloader.bin").readBytes()
@ -84,8 +85,6 @@ class EspFlasher(private val context: Context) {
val bootApp0 = assets.open("firmware/boot_app0.bin").readBytes() val bootApp0 = assets.open("firmware/boot_app0.bin").readBytes()
val firmware = assets.open("firmware/firmware.bin").readBytes() val firmware = assets.open("firmware/firmware.bin").readBytes()
val totalSize = bootloader.size + partitions.size + bootApp0.size + firmware.size
val steps = listOf( val steps = listOf(
FlashStep("Bootloader", 0x0, bootloader, 30, 10, false), FlashStep("Bootloader", 0x0, bootloader, 30, 10, false),
FlashStep("Partitie tabel", 0x8000, partitions, 40, 10, false), FlashStep("Partitie tabel", 0x8000, partitions, 40, 10, false),
@ -93,7 +92,7 @@ class EspFlasher(private val context: Context) {
FlashStep("Firmware", 0x10000, firmware, 60, 35, true) FlashStep("Firmware", 0x10000, firmware, 60, 35, true)
) )
postProgress(callback, 5, "Sync met bootloader...") callback.onProgress(5, "Sync met bootloader...")
val api = EspFlasherApi.connect(transport) val api = EspFlasherApi.connect(transport)
.withCallBack(object : ProgressCallback { .withCallBack(object : ProgressCallback {
override fun onProgress(pct: Float) { override fun onProgress(pct: Float) {
@ -104,42 +103,42 @@ class EspFlasher(private val context: Context) {
} }
}) })
postProgress(callback, 10, "Chip detecteren...") callback.onProgress(10, "Chip detecteren...")
val detected = api.chipDetect() val detected = api.chipDetect()
val chipId = detected.getChipId() val chipId = detected.getChipId()
Log.i(TAG, "Detected chip: $chipId") Log.i(TAG, "Detected chip: $chipId")
postProgress(callback, 15, "Chip: ${chipId.readableName}") callback.onProgress(15, "Chip: ${chipId.readableName}")
postProgress(callback, 20, "Stub laden...") callback.onProgress(20, "Stub laden...")
val stub = detected.loadStub() val stub = detected.loadStub()
postProgress(callback, 25, "Flash wissen...") callback.onProgress(25, "Flash wissen...")
stub.eraseFlash() stub.eraseFlash()
for (step in steps) { for (step in steps) {
if (cancelled) return checkCancelled()
val sizeStr = if (step.data.size > 1024) "${step.data.size / 1024}KB" else "${step.data.size} bytes" val sizeStr = if (step.data.size > 1024) "${step.data.size / 1024}KB" else "${step.data.size} bytes"
postProgress(callback, step.baseProgress, "${step.name} schrijven ($sizeStr)...") callback.onProgress(step.baseProgress, "${step.name} schrijven ($sizeStr)...")
val writeStub = if (step.compress) stub.withCompression(true) else stub.withCompression(false) val writeStub = if (step.compress) stub.withCompression(true) else stub.withCompression(false)
writeStub.writeFlash(step.address, step.data) writeStub.writeFlash(step.address, step.data)
val endProgress = step.baseProgress + step.range val endProgress = step.baseProgress + step.range
postProgress(callback, endProgress.coerceAtMost(95), "${step.name} geschreven") callback.onProgress(endProgress.coerceAtMost(95), "${step.name} geschreven")
} }
postProgress(callback, 95, "ESP resetten...") callback.onProgress(95, "ESP resetten...")
stub.reset() stub.reset()
postProgress(callback, 100, "Firmware geflashed!") callback.onProgress(100, "Firmware geflashed!")
handler.post { callback.onComplete() }
} finally { } finally {
connection.close() connection.close()
} }
} }
private fun postProgress(callback: FlashCallback, percent: Int, message: String) { private suspend fun checkCancelled() {
Log.d(TAG, "Progress $percent%: $message") if (cancelled) {
handler.post { callback.onProgress(percent, message) } coroutineContext.ensureActive()
}
} }
} }

1
android/app/src/main/java/com/eddy/atomrelay/MainActivity.kt
View file

@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.Manifest import android.Manifest

1
android/app/src/main/java/com/eddy/atomrelay/PrefsHelper.kt
View file

@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.content.Context import android.content.Context

90
android/app/src/main/java/com/eddy/atomrelay/SettingsActivity.kt
View file

@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.app.AlertDialog import android.app.AlertDialog
@ -13,14 +14,17 @@ import android.hardware.usb.UsbEndpoint
import android.hardware.usb.UsbInterface import android.hardware.usb.UsbInterface
import android.hardware.usb.UsbManager import android.hardware.usb.UsbManager
import android.os.Bundle import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.util.Log import android.util.Log
import android.widget.Button import android.widget.Button
import android.widget.ProgressBar import android.widget.ProgressBar
import android.widget.TextView import android.widget.TextView
import android.widget.Toast import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import java.nio.charset.StandardCharsets import java.nio.charset.StandardCharsets
import java.security.SecureRandom import java.security.SecureRandom
@ -44,7 +48,6 @@ class SettingsActivity : AppCompatActivity() {
private var progressDialog: AlertDialog? = null private var progressDialog: AlertDialog? = null
private var dialog: AlertDialog? = null private var dialog: AlertDialog? = null
private var flasher: EspFlasher? = null private var flasher: EspFlasher? = null
private val handler = Handler(Looper.getMainLooper())
private val usbAttachedReceiver = object : BroadcastReceiver() { private val usbAttachedReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) { override fun onReceive(context: Context, intent: Intent) {
@ -123,9 +126,9 @@ class SettingsActivity : AppCompatActivity() {
currentAction = UsbAction.NONE currentAction = UsbAction.NONE
flasher?.cancel() flasher?.cancel()
flasher = null flasher = null
try { unregisterReceiver(usbAttachedReceiver) } catch (e: Exception) {} try { unregisterReceiver(usbAttachedReceiver) } catch (_: Exception) {}
try { unregisterReceiver(usbPermissionReceiver) } catch (e: Exception) {} try { unregisterReceiver(usbPermissionReceiver) } catch (_: Exception) {}
try { unregisterReceiver(usbDetachedReceiver) } catch (e: Exception) {} try { unregisterReceiver(usbDetachedReceiver) } catch (_: Exception) {}
} }
override fun onSupportNavigateUp(): Boolean { override fun onSupportNavigateUp(): Boolean {
@ -155,30 +158,30 @@ class SettingsActivity : AppCompatActivity() {
private fun doKeyExchange(usbManager: UsbManager, device: UsbDevice) { private fun doKeyExchange(usbManager: UsbManager, device: UsbDevice) {
showProgressDialog("Sleutel Uitwisselen", "Sleutel uitlezen...", STYLE_SPINNER) showProgressDialog("Sleutel Uitwisselen", "Sleutel uitlezen...", STYLE_SPINNER)
Thread { lifecycleScope.launch(Dispatchers.IO) {
val result = readKeyFromEsp(usbManager, device) val result = readKeyFromEsp(usbManager, device)
if (isFinishing || isDestroyed) return@Thread withContext(Dispatchers.Main) {
handler.post { if (isFinishing || isDestroyed) return@withContext
when (result) { when (result) {
is KeyResult.Success -> { is KeyResult.Success -> {
val prefs = PrefsHelper.getPrefs(this@SettingsActivity) val prefs = PrefsHelper.getPrefs(this@SettingsActivity)
prefs.edit().putString(PrefsHelper.PREF_KEY, result.hexKey).apply() prefs.edit().putString(PrefsHelper.PREF_KEY, result.hexKey).apply()
Toast.makeText(this, "Beveiligingssleutel gelezen", Toast.LENGTH_LONG).show() Toast.makeText(this@SettingsActivity, "Beveiligingssleutel gelezen", Toast.LENGTH_LONG).show()
cleanupAction() cleanupAction()
setResult(RESULT_SCAN) setResult(RESULT_SCAN)
finish() finish()
} }
is KeyResult.Error -> { is KeyResult.Error -> {
Toast.makeText(this, "Sleutel uitwisselen mislukt - probeer opnieuw", Toast.LENGTH_LONG).show() Toast.makeText(this@SettingsActivity, "Sleutel uitwisselen mislukt - probeer opnieuw", Toast.LENGTH_LONG).show()
cleanupAction() cleanupAction()
} }
null -> { null -> {
Toast.makeText(this, "Sleutel uitwisselen mislukt - probeer opnieuw", Toast.LENGTH_SHORT).show() Toast.makeText(this@SettingsActivity, "Sleutel uitwisselen mislukt - probeer opnieuw", Toast.LENGTH_SHORT).show()
cleanupAction() cleanupAction()
} }
} }
} }
}.start() }
} }
// === Firmware Flashing === // === Firmware Flashing ===
@ -209,42 +212,41 @@ class SettingsActivity : AppCompatActivity() {
showProgressDialog("Firmware Flashen", "Initialiseren...", STYLE_HORIZONTAL) showProgressDialog("Firmware Flashen", "Initialiseren...", STYLE_HORIZONTAL)
flasher = EspFlasher(this) flasher = EspFlasher(this)
flasher?.flashDevice(usbManager, device, object : EspFlasher.FlashCallback { val progressCallback = object : EspFlasher.FlashCallback {
override fun onProgress(percent: Int, message: String) { override fun onProgress(percent: Int, message: String) {
runOnUiThread { lifecycleScope.launch(Dispatchers.Main) {
val d = progressDialog ?: return@runOnUiThread val d = progressDialog ?: return@launch
d.findViewById<ProgressBar>(R.id.progressBar)?.progress = percent d.findViewById<ProgressBar>(R.id.progressBar)?.progress = percent
d.findViewById<TextView>(R.id.message)?.text = message d.findViewById<TextView>(R.id.message)?.text = message
} }
} }
}
override fun onComplete() { lifecycleScope.launch {
runOnUiThread { try {
currentAction = UsbAction.NONE flasher?.flashDevice(usbManager, device, progressCallback)
progressDialog?.dismiss() if (isFinishing || isDestroyed) return@launch
progressDialog = null currentAction = UsbAction.NONE
dialog = AlertDialog.Builder(this@SettingsActivity) progressDialog?.dismiss()
.setTitle("Firmware Flashen") progressDialog = null
.setMessage("Firmware geflashed!\n\nOntkoppel de ESP en sluit opnieuw aan om de sleutel in te stellen.") dialog = AlertDialog.Builder(this@SettingsActivity)
.setPositiveButton("Sluiten") { d, _ -> .setTitle("Firmware Flashen")
d.dismiss() .setMessage("Firmware geflashed!\n\nOntkoppel de ESP en sluit opnieuw aan om de sleutel in te stellen.")
dialog = null .setPositiveButton("Sluiten") { d, _ ->
} d.dismiss()
.setCancelable(true) dialog = null
.setOnCancelListener { dialog = null } }
.show() .setCancelable(true)
} .setOnCancelListener { dialog = null }
.show()
} catch (e: kotlinx.coroutines.CancellationException) {
cleanupAction()
} catch (e: Exception) {
progressDialog?.dismiss()
progressDialog = null
Toast.makeText(this@SettingsActivity, "Flashen mislukt: ${e.message}", Toast.LENGTH_LONG).show()
cleanupAction()
} }
}
override fun onError(message: String) {
runOnUiThread {
progressDialog?.dismiss()
progressDialog = null
Toast.makeText(this@SettingsActivity, "Flashen mislukt: $message", Toast.LENGTH_LONG).show()
cleanupAction()
}
}
})
} }
// === USB dispatch === // === USB dispatch ===
@ -403,7 +405,7 @@ class SettingsActivity : AppCompatActivity() {
Log.e(TAG, "Key exchange error", e) Log.e(TAG, "Key exchange error", e)
return KeyResult.Error("Fout: ${e.message}") return KeyResult.Error("Fout: ${e.message}")
} finally { } finally {
try { connection.close() } catch (e: Exception) {} try { connection.close() } catch (_: Exception) {}
} }
} }

1
android/app/src/main/java/com/eddy/atomrelay/UsbSerialTransport.kt
View file

@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.hardware.usb.UsbConstants import android.hardware.usb.UsbConstants

1
android/app/src/main/java/com/eddy/atomrelay/UsbUtils.kt
View file

@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-3.0-or-later
package com.eddy.atomrelay package com.eddy.atomrelay
import android.hardware.usb.UsbConstants import android.hardware.usb.UsbConstants

205
appstore.md Normal file
View file

@ -0,0 +1,205 @@
# App Store Publicatie — Sylvia Touch Relay
## Licentie-overzicht Dependencies
| Dependency | Versie | Licentie | Copyleft? | FOSS? |
|---|---|---|---|---|
| `io.github.dkaukov:esp32-flash-lib` | 1.1.17 | **GPL-3.0** | Ja (strong) | Ja |
| `com.eclipsesource.minimal-json:minimal-json` | 0.9.5 | MIT | Nee | Ja |
| `org.slf4j:slf4j-nop` | 2.0.16 | MIT | Nee | Ja |
| `androidx.security:security-crypto` | 1.1.0-alpha06 | Apache 2.0 | Nee | Ja |
| `androidx.core:core-ktx` | 1.12.0 | Apache 2.0 | Nee | Ja |
| `androidx.appcompat:appcompat` | 1.6.1 | Apache 2.0 | Nee | Ja |
### GPL-3.0 Copyleft Implicatie
`esp32-flash-lib` is GPL-3.0. Een app die ertoe linkt (compile-time dependency) moet zelf ook GPL-3.0 (of compatibele licentie) zijn. Dit betekent:
- App **moet** onder GPL-3.0 worden uitgebracht
- Source code moet beschikbaar blijven (GitHub volstaat)
- Geen proprietary SDKs linken (niet van toepassing)
- Voor andere stores (Amazon, Samsung) is dit geen belemmering
### Actie: GPL-3.0 toepassen ✅ Voltooid
1. ✅ `LICENSE` file toevoegen in repo root (volledige GPL-3.0 tekst)
2. ✅ Source file headers toevoegen: `// SPDX-License-Identifier: GPL-3.0-or-later` in alle 6 Kotlin bestanden
3. ✅ `README.md` licentiesectie bijwerken
---
## Google Play Store
### Vereisten (2026)
| Vereiste | Status | Opmerking |
|---|---|---|
| Ontwikkelaarsaccount | ❌ Nog aanmaken | $25 eenmalig |
| Overheids-ID verificatie | ❌ Nog doen | Paspoort/rijbewijs + selfie |
| AAB formaat (geen APK) | ❌ Release build nodig | Nu alleen debug |
| Release signing key | ❌ Aanmaken | `keytool` of Play App Signing |
| targetSdk ≥ 35 | ❌ Nu 34 | Verplicht; ≥ 36 vanaf 31 aug 2026 |
| App icoon (mipmap) | ❌ Ontbreekt | Geen mipmap resources aanwezig |
| Privacy Policy URL | ❌ Nodig | Website of GitHub Pages |
| Data Safety formulier | ❌ Invullen | In Play Console |
| IARC content rating | ❌ Invullen | Vragenlijst in Play Console |
| App signing | ⚠️ Keuze | Play App Signing (aanbevolen) of eigen key |
| `minifyEnabled true` | ⚠️ Aanbevolen | Proguard/R8 rules ontbreken nog |
| `ACCESS_FINE_LOCATION` | ⚠️ Mogelijk overbodig | Sinds Android 12 niet meer nodig voor BLE scan |
### Closed Testing Verplichting
Nieuwe persoonlijke accounts moeten **closed testing** doorlopen:
- Minimaal **12 testers**
- Minimaal **14 opeenvolgende dagen** testen
- Testers moeten de app actief gebruiken
- Na goedkeuring: pas dan kan de app publiek
### Publicatie Stappenplan
1. Ontwikkelaarsaccount aanmaken + ID verificatie
2. `targetSdk` upgraden naar 35 (codereview #7.2)
3. App icoon ontwerpen + mipmap resources toevoegen
4. Release build configureren (signing, minify, proguard)
5. Privacy Policy pagina maken (GitHub Pages of statische site)
6. AAB build maken: `./gradlew bundleRelease`
7. Closed testing opzetten met 12 testers
8. Na 14 dagen: productie-release indienen
---
## Alternatieve App Stores
### Vergelijking
| Store | Kosten | Review tijd | GMS nodig? | FOSS verplicht? | Relevante beperking |
|---|---|---|---|---|---|
| **Samsung Galaxy Store** | Gratis | Weken | Nee | Nee | 16KB page size verplicht voor native libs |
| **Amazon Appstore** | $0 | ~1 dag | Nee | Nee | Laagste drempel, grote userbase (Fire TV/tablets) |
| **F-Droid** | $0 | 2-3 weken | Nee | **Ja** | Bouwt zelf vanuit source; hele codebase + deps moeten FOSS |
| **Huawei AppGallery** | Gratis | Dagen | Nee | Nee | ID verificatie verplicht |
| **Aptoide** | $0 | Uren | Nee | Nee | Minimale review, minder vertrouwd |
### F-Droid Specifiek
- **Compatibel**: alle deps zijn FOSS (GPL-3.0, MIT, Apache 2.0)
- **Vereist**: app moet open-source licentie hebben → GPL-3.0 (verplicht door esp32-flash-lib copyleft)
- **Proces**: F-Droid bouwt de app zelf vanuit source (geen APK/AAB upload)
- **Aanvraag**: merge request in [fdroiddata](https://gitlab.com/fdroid/fdroiddata) repo met build recipe
- **Voordelen**: geen ontwikkelaarskosten, geen account nodig, vertrouwd door FOSS-gemeenschap
- **Nadelen**: kleine userbase, geen automatische updates buiten F-Droid client
### Amazon Appstore Specifiek
- **Laagste drempel**: gratis, snelle review (~1 dag), geen ID verificatie
- **Bereik**: Fire TV, Fire tablets, Kindle — niche maar relevant voor IoT-apps
- **Formaat**: APK of AAB
- **Aanmelden**: [developer.amazon.com](https://developer.amazon.com)
### Samsung Galaxy Store Specifiek
- **Bereik**: alleen Samsung Galaxy toestellen (groot marktaandeel, maar exclusief)
- **Niet-Samsung**: Galaxy Store kan officieel alleen op Samsung toestellen; sideloading APK op andere merken werkt onbetrouwbaar (ROM-afhankelijkheden, craches, geen updates)
- **16KB page size**: als de app native libraries bevat, moeten deze met 16KB page alignment worden gebuild. Onze app heeft geen native libs, dus geen probleem.
- **Aanmelden**: [seller.samsungapps.com](https://seller.samsungapps.com)
### Aptoide
- **Niet zelf-hosted**: jouw store draait binnen Aptoide's infrastructuur, niet op eigen server
- **Gebruikers moeten eerst Aptoide client installeren** voordat ze jouw store kunnen vinden
- **Data breach**: 2020 — 20M gebruikersgegevens gelekt
- **Review**: minimaal (uren), maar minder vertrouwd bij gebruikers
- **Geschikt voor**: grote distributie, niet voor 1-2 apps → overkill voor ons
---
## Eigen App Store (Self-Hosted)
Technisch is een eigen app store simpel: APK hosten op een webserver, gebruiker downloadt direct. Android staat installatie uit onbekende bronnen toe. Er zijn geen Google-licenties of -toestemmingen nodig om een app store te runnen.
### Praktische Overwegingen
- Gebruiker moet "Installatie uit onbekende bronnen" inschakelen; Google Play Protect waarschuwt
- Geen automatische updates tenzij je zelf een update-check in de app bouwt
- **Android Developer Verificatie (vanaf 2027 globaal)**: Google vereist identity verification + package name registratie via Android Developer Console voor installatie op gecertificeerde apparaten. Dit geldt voor óók sideloading. De verificatie is gratis (geen $25 Play-account nodig), maar vereist legitimatiebewijs.
### Self-Hosted Oplossingen Vergelijking
| Aspect | Selfdroid | Aptoide | Simpele webpagina |
|---|---|---|---|
| **Zelf-hosted** | ✅ Ja | ❌ Nee (Aptoide's ecosysteem) | ✅ Ja |
| **Installatie voor gebruiker** | URL in browser → download APK | Eerst Aptoide client, dan store zoeken | URL → download APK |
| **Licentie** | BSD 3-clause | Propriëtair | NVT |
| **Setup** | Python/Flask + nginx + uWSGI | Account op aptoide.com | Statische HTML |
| **Admin paneel** | ✅ Met wachtwoordbeveiliging | Via Aptoide dashboard | Handmatig upload |
| **APK metadata extractie** | ✅ Automatisch (naam, versie, icoon) | ✅ Automatisch | Nee |
| **Android companion app** | Gepland, nooit gebouwd | ✅ Aptoide client | Nee |
| **Data breach history** | Nee | Ja (2020, 20M gebruikers) | Nee |
| **Geschikt voor 1 app** | ✅ Perfect | ❌ Overkill | ✅ Simpelst |
### Aanrader: Selfdroid
**Selfdroid** ([vitlabuda/selfdroid-web-app](https://github.com/vitlabuda/selfdroid-web-app)) — self-hosted Android app store, Python/Flask, BSD-licentie.
Voordelen:
- Admin uploadt APK, metadata automatisch geëxtraheerd
- Gebruikers openen URL op telefoon → downloaden APK direct vanuit browser
- Geen extra app installatie nodig voor gebruikers
- Lichtgewicht: Python 3.7+, Flask, nginx + uWSGI
- Kan op bestaande server draaien
- BSD-licentie compatibel met onze GPL-3.0 app
Deploy stappen:
1. Clone repo, configureer `Settings.py` (admin wachtwoord)
2. `./prepare.sh` voor Python venv + dependencies
3. nginx vhost + uWSGI config (meegeleverd in repo)
4. Upload APK via admin paneel
5. Deel URL met gebruikers
Alternatief voor maximale eenvoud: APK op GitHub Releases hosten + simpele downloadpagina (GitHub Pages). Geen server nodig, maar geen auto-metadata of admin paneel.
---
## Multi-Channel Distributiestrategie
We publiceren parallel via meerdere kanalen. Geen exclusiviteit — Android staat meerdere distributiekanalen naast elkaar toe.
| Kanaal | Bereik | Kosten | Beheer | Prioriteit |
|---|---|---|---|---|
| **F-Droid** | FOSS-gebruikers wereldwijd | Gratis | MR in fdroiddata, F-Droid bouwt zelf | 1e |
| **Samsung Galaxy Store** | Samsung-gebruikers | Gratis | Upload AAB, Samsung review | 2e |
| **Eigen store (Selfdroid)** | Iedereen met directe link | Hosting alleen | APK upload via admin paneel | 3e |
| **Google Play Store** | Grootste bereik | $25 + ID verificatie | Veel vereisten, closed testing | 4e |
### Volgorde
1. **F-Droid** — geen kosten, F-Droid bouwt zelf vanuit source, vertrouwd kanaal
2. **Samsung Galaxy Store** — gratis, bereikt Samsung-gebruikers die geen F-Droid hebben
3. **Selfdroid (eigen store)** — APK distributie voor iedereen buiten F-Droid/Samsung, geen goedkeuringsproces
4. **Google Play Store** — grootste bereik maar veel vereisten (account, closed testing, targetSdk 35)
### Benodigde stappen vóór publicatie (alle kanalen)
| Stap | F-Droid | Galaxy Store | Eigen store | Google Play |
|---|---|---|---|---|
| GPL-3.0 licentie | ✅ Gedaan | — | — | — |
| Release build (signed) | F-Droid bouwt zelf | ✅ Nodig | ✅ Nodig | ✅ Nodig (AAB) |
| App icoon (mipmap) | ✅ Nodig | ✅ Nodig | — | ✅ Nodig |
| targetSdk ≥ 35 | — | — | — | ✅ Verplicht |
| Privacy Policy URL | — | — | — | ✅ Verplicht |
| Developer verificatie | — | — | 2027 | ✅ Automatisch |
| Proguard rules | Aanbevolen | Aanbevolen | — | Aanbevolen |
---
## Openstaande Codereview Punten die Publicatie Blokkeren
| # | Prioriteit | Bevinding | Relevantie voor publicatie |
|---|---|---|---|
| 7.2 | LAAG | compileSdk/targetSdk → 35 | **Blokkeert Google Play** |
| 4.5 | LAAG | Proguard rules | **Aanbevolen** voor release build |
| 6.2 | LAAG | Dark mode | Gebruikerservaring |
| — | — | App icoon (mipmap) | **Verplicht** voor alle stores |
| — | — | Release build signing | **Verplicht** voor alle stores |
| — | — | Privacy Policy URL | **Verplicht** voor Google Play |

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# ESP32 Flash Library Alternatieven
## Huidige Situatie
We gebruiken `io.github.dkaukov:esp32-flash-lib:1.1.17` (Java, GPL-3.0). Deze GPL-3.0 licentie dwingt copyleft af: de hele app moet GPL-3.0-compatibel zijn. Dat blokkeert een MIT/Apache licentie voor de app.
## Alternatieven
| Library | Taal | Licentie | Sterren | Serial interface | Laatste update |
|---|---|---|---|---|---|
| **loucass003/EspflashKotlin** | Kotlin | **Apache 2.0** | 3 | JSerialComm (pluggable) | jan 2026 |
| dkaukov/esp32-flash-lib | Java | GPL-3.0 | — | JSerialComm | — |
| bdureau/ESPLoader | Java | GPL-3.0 | 22 | JSerialComm | jan 2026 |
### loucass003/EspflashKotlin (Apache 2.0)
- Repo: https://github.com/loucass003/EspflashKotlin
- JitPack: `com.github.loucass003:EspflashKotlin:<tag>`
- 3 stars, 1 fork, 28 commits
- Pluggable serial interface: implementeer `FlasherSerialInterface` zelf
- Ondersteunt `.addBin(bytes, address)` voor meerdere binaries
- Progress listener via `FlashingProgressListener`
- Geen Maven Central publicatie — via JitPack
**Voordelen:**
- Apache 2.0 — app mag onder MIT/Apache/GPL naar keuze
- Kotlin-native (past bij onze codebase)
- Pluggable serial: we kunnen onze eigen USB serial implementatie aanhaken
**Nadelen:**
- Erg klein project (3 stars, lage adoptie)
- Geen Maven Central — JitPack dependency (minder betrouwbaar voor productie)
- Minder getest dan esp32-flash-lib
- Serial interface adapter moet worden geschreven voor onze USB/BLE implementatie
- Geen stub loader (esptool stub) — alleen ROM bootloader protocol
### bdureau/ESPLoader (GPL-3.0)
- Repo: https://github.com/bdureau/ESPLoader
- 22 stars
- Partial Java port van esptool
- Zelfde GPL-3.0 probleem als onze huidige lib — **geen licentiewinst**
## Migratie-inschatting (esp32-flash-lib → EspflashKotlin)
1. Dependency vervangen in `build.gradle`
2. `EspFlasher.kt` herschrijven: `FlasherSerialInterface` implementeren voor onze USB serial context
3. Firmware bins en addresses overnemen (zelfde ESP32 ROM bootloader protocol)
4. JitPack repo toevoegen in `settings.gradle` of `build.gradle`
5. Testen op device — het ROM bootloader protocol is hetzelfde, maar implementatie kan subtiele verschillen hebben
**Risico:** EspflashKotlin is minimaal getest. Het mist mogelijk edge cases die esp32-flash-lib wel afdekt (stub loader, error recovery, chip detectie).
## Conclusie
| Optie | Licentie-app | Migratie-effort | Risico |
|---|---|---|---|
| Blijf bij esp32-flash-lib, app wordt GPL-3.0 | GPL-3.0 | Geen | Geen |
| Migreer naar EspflashKotlin | MIT/Apache mogelijk | Medium (2-3 dagen) | Hoog (kleine lib, weinig adoptie) |
| Eigen implementatie (esptool protocol zelf porten) | Vrij te kiezen | Hoog (1-2 weken) | Medium (volledig eigen code) |
**Aanbeveling:** Blijf bij `esp32-flash-lib` en breng de app onder GPL-3.0 uit. Voor een open-source project op GitHub is GPL-3.0 geen praktische beperking — je moet alleen source beschikbaar houden, wat je al doet. De migratie naar EspflashKotlin brengt risico's met zich mee die niet opwegen tegen het licentievoordeel.