chore: add preference item

app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt

@@ -35,8 +35,8 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
             DefaultEuiccChannelManager.TAG,
             "Trying OMAPI for physical slot ${port.card.physicalSlotIndex}"
         )
-        try {
-            return EuiccChannelImpl(
+        return try {
+            EuiccChannelImpl(
                 context.getString(R.string.channel_type_omapi),
                 port,
                 intrinsicChannelName = null,
@@ -48,19 +48,15 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
                 isdrAid,
                 context.preferenceRepository.verboseLoggingFlow,
                 context.preferenceRepository.ignoreTLSCertificateFlow,
-            ).also {
-                Log.i(DefaultEuiccChannelManager.TAG, "Is OMAPI channel, setting MSS to 60")
-                it.lpa.setEs10xMss(60)
-            }
+            )
         } catch (_: IllegalArgumentException) {
             // Failed
             Log.w(
                 DefaultEuiccChannelManager.TAG,
                 "OMAPI APDU interface unavailable for physical slot ${port.card.physicalSlotIndex} with ISD-R AID: ${isdrAid.encodeHex()}."
             )
+            null
         }
-
-        return null
     }
 
     override fun tryOpenUsbEuiccChannel(

app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt

@@ -99,6 +99,12 @@ open class DefaultEuiccChannelManager(
             val channel =
                 tryOpenChannelFirstValidAid { euiccChannelFactory.tryOpenEuiccChannel(port, it) }
 
+            if (channel != null) {
+                val mss = context.preferenceRepository.es10xMssFlow.first()
+                Log.i(TAG, "Set ${channel.type} channel, ES10x MSS to $mss")
+                channel.lpa.setEs10xMss(mss.toByte())
+            }
+
             if (channel != null) {
                 channelCache.add(channel)
                 return channel

app-common/src/main/java/im/angry/openeuicc/ui/SettingsFragment.kt

@@ -8,6 +8,7 @@ import android.provider.Settings
 import android.widget.Toast
 import androidx.lifecycle.lifecycleScope
 import androidx.preference.CheckBoxPreference
+import androidx.preference.ListPreference
 import androidx.preference.Preference
 import androidx.preference.PreferenceCategory
 import androidx.preference.PreferenceFragmentCompat
@@ -16,7 +17,6 @@ import im.angry.openeuicc.util.*
 import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.runBlocking
 
 open class SettingsFragment: PreferenceFragmentCompat() {
     private lateinit var developerPref: PreferenceCategory
@@ -84,6 +84,9 @@ open class SettingsFragment: PreferenceFragmentCompat() {
         requirePreference<CheckBoxPreference>("pref_developer_euicc_memory_reset")
             .bindBooleanFlow(preferenceRepository.euiccMemoryResetFlow)
 
+        requirePreference<ListPreference>("pref_developer_es10x_mss")
+            .bindIntFlow(preferenceRepository.es10xMssFlow, 63)
+
         requirePreference<Preference>("pref_developer_isdr_aid_list").apply {
             intent = Intent(requireContext(), IsdrAidListActivity::class.java)
         }
@@ -138,13 +141,26 @@ open class SettingsFragment: PreferenceFragmentCompat() {
         }
 
         setOnPreferenceChangeListener { _, newValue ->
-            runBlocking {
+            lifecycleScope.launch {
                 flow.updatePreference(newValue as Boolean)
             }
             true
         }
     }
 
+    private fun ListPreference.bindIntFlow(flow: PreferenceFlowWrapper<Int>, defaultValue: Int) {
+        lifecycleScope.launch {
+            flow.collect { value = it.toString() }
+        }
+
+        setOnPreferenceChangeListener { _, newValue ->
+            lifecycleScope.launch {
+                flow.updatePreference((newValue as String).toIntOrNull() ?: defaultValue)
+            }
+            true
+        }
+    }
+
     protected fun mergePreferenceOverlay(overlayKey: String, targetKey: String) {
         val overlayCat = requirePreference<PreferenceCategory>(overlayKey)
         val targetCat = requirePreference<PreferenceCategory>(targetKey)

app-common/src/main/java/im/angry/openeuicc/util/PreferenceUtils.kt

@@ -5,6 +5,7 @@ import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.core.booleanPreferencesKey
 import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.intPreferencesKey
 import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import androidx.fragment.app.Fragment
@@ -38,6 +39,7 @@ internal object PreferenceKeys {
     val IGNORE_TLS_CERTIFICATE = booleanPreferencesKey("ignore_tls_certificate")
     val EUICC_MEMORY_RESET = booleanPreferencesKey("euicc_memory_reset")
     val ISDR_AID_LIST = stringPreferencesKey("isdr_aid_list")
+    val ES10X_MSS = intPreferencesKey("es10x_mss")
 }
 
 const val EUICC_DEFAULT_ISDR_AID = "A0000005591010FFFFFFFF8900000100"
@@ -86,6 +88,7 @@ open class PreferenceRepository(private val context: Context) {
         PreferenceConstants.DEFAULT_AID_LIST,
         { Base64.getEncoder().encodeToString(it.encodeToByteArray()) },
         { Base64.getDecoder().decode(it).decodeToString() })
+    val es10xMssFlow = bindFlow(PreferenceKeys.ES10X_MSS, 63)
 
     protected fun <T> bindFlow(
         key: Preferences.Key<T>,

app-common/src/main/res/values/strings.xml

@@ -200,6 +200,16 @@
     <string name="pref_developer_ignore_tls_certificate_desc">Accept any TLS certificate used by the RSP server</string>
     <string name="pref_developer_euicc_memory_reset">Allow erasing eUICC</string>
     <string name="pref_developer_euicc_memory_reset_desc">This is a dangerous operation and hidden by default. As an alternative, you can delete all profiles manually.</string>
+    <string name="pref_developer_es10x_mss">ES10x MSS</string>
+    <string name="pref_developer_es10x_mss_desc">Global ES10x MSS</string>
+    <string-array name="pref_developer_es10x_entry_keys">
+        <item>High Speed</item>
+        <item>Compatibility Mode</item>
+    </string-array>
+    <string-array name="pref_developer_es10x_entry_values" translatable="false">
+        <item>255</item>
+        <item>63</item>
+    </string-array>
     <string name="pref_developer_isdr_aid_list">Customize ISD-R AID list</string>
     <string name="pref_developer_isdr_aid_list_desc">Some brands of removable eUICCs may use their own non-standard ISD-R AID, rendering them inaccessible to third-party apps. We can attempt to use non-standard AIDs added in this list, but there is no guarantee that they will work.</string>
     <string name="pref_info">Info</string>

app-common/src/main/res/xml/pref_settings.xml

@@ -81,6 +81,14 @@
             app:summary="@string/pref_developer_euicc_memory_reset_desc"
             app:title="@string/pref_developer_euicc_memory_reset" />
 
+        <ListPreference
+            app:iconSpaceReserved="false"
+            app:key="pref_developer_es10x_mss"
+            app:summary="@string/pref_developer_es10x_mss_desc"
+            app:title="@string/pref_developer_es10x_mss"
+            app:entries="@array/pref_developer_es10x_entry_keys"
+            app:entryValues="@array/pref_developer_es10x_entry_values" />
+
         <Preference
             app:iconSpaceReserved="false"
             app:key="pref_developer_isdr_aid_list"