Make preferred directory structure for Autofill configurable (#660)

Some users keep their password files in a directory structure such as:
/example.org/john@doe.org.gpg
while others prefer the style:
/example.org/john@doe.org/password.gpg

This commit adds a setting that allows to switch between the two. All Autofill
operations, such as search, match, generate and save, respect this setting.

Note: The first style seems to be the most widely used and is therefore kept as
the default. The second style is mentioned on the official Pass website at:
https://www.passwordstore.org/#organization

app/src/main/java/com/zeapo/pwdstore/UserPreference.kt

@@ -62,8 +62,9 @@ class UserPreference : AppCompatActivity() {
     private lateinit var prefsFragment: PrefsFragment
 
     class PrefsFragment : PreferenceFragmentCompat() {
-        private var autofillDependencies = listOf<Preference?>()
         private var autoFillEnablePreference: SwitchPreferenceCompat? = null
+        private lateinit var autofillDependencies: List<Preference>
+        private lateinit var oreoAutofillDependencies: List<Preference>
         private lateinit var callingActivity: UserPreference
 
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -96,16 +97,21 @@ class UserPreference : AppCompatActivity() {
 
             // Autofill preferences
             autoFillEnablePreference = findPreference("autofill_enable")
-            val autoFillAppsPreference = findPreference<Preference>("autofill_apps")
+            val autoFillAppsPreference = findPreference<Preference>("autofill_apps")!!
-            val autoFillDefaultPreference = findPreference<CheckBoxPreference>("autofill_default")
+            val autoFillDefaultPreference = findPreference<CheckBoxPreference>("autofill_default")!!
-            val autoFillAlwaysShowDialogPreference = findPreference<CheckBoxPreference>("autofill_always")
+            val autoFillAlwaysShowDialogPreference =
-            val autoFillShowFullNamePreference = findPreference<CheckBoxPreference>("autofill_full_path")
+                findPreference<CheckBoxPreference>("autofill_always")!!
+            val autoFillShowFullNamePreference =
+                findPreference<CheckBoxPreference>("autofill_full_path")!!
             autofillDependencies = listOf(
                     autoFillAppsPreference,
                     autoFillDefaultPreference,
                     autoFillAlwaysShowDialogPreference,
                     autoFillShowFullNamePreference
             )
+            val oreoAutofillDirectoryStructurePreference =
+                findPreference<ListPreference>("oreo_autofill_directory_structure")!!
+            oreoAutofillDependencies = listOf(oreoAutofillDirectoryStructurePreference)
 
             // Misc preferences
             val appVersionPreference = findPreference<Preference>("app_version")
@@ -236,7 +242,7 @@ class UserPreference : AppCompatActivity() {
             selectExternalGitRepositoryPreference?.onPreferenceChangeListener = resetRepo
             externalGitRepositoryPreference?.onPreferenceChangeListener = resetRepo
 
-            autoFillAppsPreference?.onPreferenceClickListener = ClickListener {
+            autoFillAppsPreference.onPreferenceClickListener = ClickListener {
                 val intent = Intent(callingActivity, AutofillPreferenceActivity::class.java)
                 startActivity(intent)
                 true
@@ -356,10 +362,14 @@ class UserPreference : AppCompatActivity() {
 
         private fun updateAutofillSettings() {
             val isAccessibilityServiceEnabled = callingActivity.isAccessibilityServiceEnabled
+            val isAutofillServiceEnabled = callingActivity.isAutofillServiceEnabled
             autoFillEnablePreference?.isChecked =
-                isAccessibilityServiceEnabled || callingActivity.isAutofillServiceEnabled
+                isAccessibilityServiceEnabled || isAutofillServiceEnabled
             autofillDependencies.forEach {
-                it?.isVisible = isAccessibilityServiceEnabled
+                it.isVisible = isAccessibilityServiceEnabled
+            }
+            oreoAutofillDependencies.forEach {
+                it.isVisible = isAutofillServiceEnabled
             }
         }
 
@@ -409,16 +419,7 @@ class UserPreference : AppCompatActivity() {
                         startActivity(intent)
                     }
                     setNegativeButton(R.string.dialog_cancel, null)
-                    setOnDismissListener {
+                    setOnDismissListener { updateAutofillSettings() }
-                        val isEnabled =
-                            if (enableOreoAutofill && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                                callingActivity.isAutofillServiceEnabled
-                            } else {
-                                callingActivity.isAccessibilityServiceEnabled
-                            }
-                        autoFillEnablePreference?.isChecked = isEnabled
-                        autofillDependencies.forEach { it?.isVisible = isEnabled }
-                    }
                     show()
                 }
             }

app/src/main/java/com/zeapo/pwdstore/autofill/oreo/AutofillHelper.kt

@@ -73,9 +73,14 @@ val AssistStructure.ViewNode.webOrigin: String?
 
 data class Credentials(val username: String?, val password: String) {
     companion object {
-        fun fromStoreEntry(file: File, entry: PasswordEntry): Credentials {
+        fun fromStoreEntry(
-            return if (entry.hasUsername()) Credentials(entry.username, entry.password)
+            file: File,
-            else Credentials(file.nameWithoutExtension, entry.password)
+            entry: PasswordEntry,
+            directoryStructure: DirectoryStructure
+        ): Credentials {
+            // Always give priority to a username stored in the encrypted extras
+            val username = entry.username ?: directoryStructure.getUsernameFor(file)
+            return Credentials(username, entry.password)
         }
     }
 }
@@ -95,7 +100,7 @@ private fun makeRemoteView(
 
 fun makeFillMatchRemoteView(context: Context, file: File, formOrigin: FormOrigin): RemoteViews {
     val title = formOrigin.getPrettyIdentifier(context, untrusted = false)
-    val summary = file.nameWithoutExtension
+    val summary = AutofillPreferences.directoryStructure(context).getUsernameFor(file)
     val iconRes = R.drawable.ic_person_black_24dp
     return makeRemoteView(context, title, summary, iconRes)
 }

app/src/main/java/com/zeapo/pwdstore/autofill/oreo/AutofillPreferences.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+package com.zeapo.pwdstore.autofill.oreo
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.os.Build
+import androidx.annotation.RequiresApi
+import androidx.preference.PreferenceManager
+import java.io.File
+import java.nio.file.Paths
+
+private val Context.defaultSharedPreferences: SharedPreferences
+    get() = PreferenceManager.getDefaultSharedPreferences(this)
+
+enum class DirectoryStructure(val value: String) {
+    FileBased("file"),
+    DirectoryBased("directory");
+
+    fun getUsernameFor(file: File) = when (this) {
+        FileBased -> file.nameWithoutExtension
+        DirectoryBased -> file.parentFile?.name ?: file.nameWithoutExtension
+    }
+
+    fun getIdentifierFor(file: File) = when (this) {
+        FileBased -> file.parentFile?.name
+        DirectoryBased -> file.parentFile?.parentFile?.name
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    fun getSaveFolderName(sanitizedIdentifier: String, username: String?) = when (this) {
+        FileBased -> sanitizedIdentifier
+        DirectoryBased -> Paths.get(sanitizedIdentifier, username ?: "username").toString()
+    }
+
+    fun getSaveFileName(username: String?) = when (this) {
+        FileBased -> username
+        DirectoryBased -> "password"
+    }
+
+    companion object {
+        const val PREFERENCE = "oreo_autofill_directory_structure"
+        private val DEFAULT = FileBased
+
+        private val reverseMap = values().associateBy { it.value }
+        fun fromValue(value: String?) = if (value != null) reverseMap[value] ?: DEFAULT else DEFAULT
+    }
+}
+
+object AutofillPreferences {
+
+    fun directoryStructure(context: Context): DirectoryStructure {
+        val value =
+            context.defaultSharedPreferences.getString(DirectoryStructure.PREFERENCE, null)
+        return DirectoryStructure.fromValue(value)
+    }
+}

app/src/main/java/com/zeapo/pwdstore/autofill/oreo/ui/AutofillDecryptActivity.kt

@@ -18,7 +18,9 @@ import com.github.ajalt.timberkt.d
 import com.github.ajalt.timberkt.e
 import com.zeapo.pwdstore.PasswordEntry
 import com.zeapo.pwdstore.autofill.oreo.AutofillAction
+import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
 import com.zeapo.pwdstore.autofill.oreo.Credentials
+import com.zeapo.pwdstore.autofill.oreo.DirectoryStructure
 import com.zeapo.pwdstore.autofill.oreo.FillableForm
 import java.io.ByteArrayOutputStream
 import java.io.File
@@ -76,6 +78,7 @@ class AutofillDecryptActivity : Activity(), CoroutineScope {
     }
 
     private var continueAfterUserInteraction: Continuation<Intent>? = null
+    private lateinit var directoryStructure: DirectoryStructure
 
     override val coroutineContext
         get() = Dispatchers.IO + SupervisorJob()
@@ -94,6 +97,7 @@ class AutofillDecryptActivity : Activity(), CoroutineScope {
         }
         val isSearchAction = intent?.getBooleanExtra(EXTRA_SEARCH_ACTION, true)!!
         val action = if (isSearchAction) AutofillAction.Search else AutofillAction.Match
+        directoryStructure = AutofillPreferences.directoryStructure(this)
         d { action.toString() }
         launch {
             val credentials = decryptUsernameAndPassword(File(filePath))
@@ -176,7 +180,7 @@ class AutofillDecryptActivity : Activity(), CoroutineScope {
                     val entry = withContext(Dispatchers.IO) {
                         PasswordEntry(decryptedOutput)
                     }
-                    Credentials.fromStoreEntry(file, entry)
+                    Credentials.fromStoreEntry(file, entry, directoryStructure)
                 } catch (e: UnsupportedEncodingException) {
                     e(e) { "Failed to parse password entry" }
                     null

app/src/main/java/com/zeapo/pwdstore/autofill/oreo/ui/AutofillFilterActivity.kt

@@ -23,10 +23,13 @@ import com.afollestad.recyclical.withItem
 import com.github.ajalt.timberkt.e
 import com.zeapo.pwdstore.R
 import com.zeapo.pwdstore.autofill.oreo.AutofillMatcher
+import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
+import com.zeapo.pwdstore.autofill.oreo.DirectoryStructure
 import com.zeapo.pwdstore.autofill.oreo.FormOrigin
 import com.zeapo.pwdstore.utils.PasswordItem
 import com.zeapo.pwdstore.utils.PasswordRepository
 import java.io.File
+import java.nio.file.Paths
 import java.util.Locale
 import kotlinx.android.synthetic.main.activity_oreo_autofill_filter.*
 
@@ -69,6 +72,8 @@ class AutofillFilterView : AppCompatActivity() {
         get() = PasswordRepository.PasswordSortOrder.getSortOrder(preferences)
 
     private lateinit var formOrigin: FormOrigin
+    private lateinit var repositoryRoot: File
+    private lateinit var directoryStructure: DirectoryStructure
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -98,6 +103,8 @@ class AutofillFilterView : AppCompatActivity() {
                 return
             }
         }
+        repositoryRoot = PasswordRepository.getRepositoryDirectory(this)
+        directoryStructure = AutofillPreferences.directoryStructure(this)
 
         supportActionBar?.hide()
         bindUI()
@@ -110,9 +117,19 @@ class AutofillFilterView : AppCompatActivity() {
             withDataSource(dataSource)
             withItem<PasswordItem, PasswordViewHolder>(R.layout.oreo_autofill_filter_row) {
                 onBind(::PasswordViewHolder) { _, item ->
-                    title.text = item.fullPathToParent
+                    when (directoryStructure) {
-                    // drop the .gpg extension
+                        DirectoryStructure.FileBased -> {
-                    subtitle.text = item.name.dropLast(4)
+                            title.text = item.file.relativeTo(item.rootDir).parent
+                            subtitle.text = item.file.nameWithoutExtension
+                        }
+                        DirectoryStructure.DirectoryBased -> {
+                            title.text =
+                                item.file.relativeTo(item.rootDir).parentFile?.parent ?: "/INVALID"
+                            subtitle.text =
+                                Paths.get(item.file.parentFile.name, item.file.nameWithoutExtension)
+                                    .toString()
+                        }
+                    }
                 }
                 onClick { decryptAndFill(item) }
             }
@@ -156,37 +173,37 @@ class AutofillFilterView : AppCompatActivity() {
         }
     }
 
+    private fun File.matches(filter: String, strict: Boolean): Boolean {
+        return if (strict) {
+            val toMatch = directoryStructure.getIdentifierFor(this) ?: return false
+            // In strict mode, we match
+            // * the search term exactly,
+            // * subdomains of the search term,
+            // * or the search term plus an arbitrary protocol.
+            toMatch == filter || toMatch.endsWith(".$filter") || toMatch.endsWith("://$filter")
+        } else {
+            val toMatch =
+                "${relativeTo(repositoryRoot).path}/$nameWithoutExtension".toLowerCase(Locale.getDefault())
+            toMatch.contains(filter.toLowerCase(Locale.getDefault()))
+        }
+    }
+
     private fun recursiveFilter(filter: String, dir: File? = null, strict: Boolean = true) {
-        val root = PasswordRepository.getRepositoryDirectory(this)
         // on the root the pathStack is empty
         val passwordItems = if (dir == null) {
-            PasswordRepository.getPasswords(
+            PasswordRepository.getPasswords(repositoryRoot, sortOrder)
-                PasswordRepository.getRepositoryDirectory(this),
-                sortOrder
-            )
         } else {
-            PasswordRepository.getPasswords(
+            PasswordRepository.getPasswords(dir, repositoryRoot, sortOrder)
-                dir,
-                PasswordRepository.getRepositoryDirectory(this),
-                sortOrder
-            )
         }
 
         for (item in passwordItems) {
             if (item.type == PasswordItem.TYPE_CATEGORY) {
                 recursiveFilter(filter, item.file, strict = strict)
-            }
+            } else {
-
                 // TODO: Implement fuzzy search if strict == false?
-            val matches = if (strict) item.file.parentFile.name.let {
+                val matches = item.file.matches(filter, strict = strict)
-                it == filter || it.endsWith(".$filter") || it.endsWith("://$filter")
-            }
-            else "${item.file.relativeTo(root).path}/${item.file.nameWithoutExtension}".toLowerCase(
-                Locale.getDefault()
-            ).contains(filter.toLowerCase(Locale.getDefault()))
-
                 val inAdapter = dataSource.contains(item)
-            if (item.type == PasswordItem.TYPE_PASSWORD && matches && !inAdapter) {
+                if (matches && !inAdapter) {
                     dataSource.add(item)
                 } else if (!matches && inAdapter) {
                     dataSource.remove(item)
@@ -194,3 +211,4 @@ class AutofillFilterView : AppCompatActivity() {
             }
         }
     }
+}

app/src/main/java/com/zeapo/pwdstore/autofill/oreo/ui/AutofillSaveActivity.kt

@@ -18,6 +18,7 @@ import com.github.ajalt.timberkt.e
 import com.zeapo.pwdstore.PasswordStore
 import com.zeapo.pwdstore.autofill.oreo.AutofillAction
 import com.zeapo.pwdstore.autofill.oreo.AutofillMatcher
+import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
 import com.zeapo.pwdstore.autofill.oreo.Credentials
 import com.zeapo.pwdstore.autofill.oreo.FillableForm
 import com.zeapo.pwdstore.autofill.oreo.FormOrigin
@@ -32,7 +33,7 @@ class AutofillSaveActivity : Activity() {
         private const val EXTRA_FOLDER_NAME =
             "com.zeapo.pwdstore.autofill.oreo.ui.EXTRA_FOLDER_NAME"
         private const val EXTRA_PASSWORD = "com.zeapo.pwdstore.autofill.oreo.ui.EXTRA_PASSWORD"
-        private const val EXTRA_USERNAME = "com.zeapo.pwdstore.autofill.oreo.ui.EXTRA_USERNAME"
+        private const val EXTRA_NAME = "com.zeapo.pwdstore.autofill.oreo.ui.EXTRA_NAME"
         private const val EXTRA_SHOULD_MATCH_APP =
             "com.zeapo.pwdstore.autofill.oreo.ui.EXTRA_SHOULD_MATCH_APP"
         private const val EXTRA_SHOULD_MATCH_WEB =
@@ -48,15 +49,23 @@ class AutofillSaveActivity : Activity() {
             formOrigin: FormOrigin
         ): IntentSender {
             val identifier = formOrigin.getPrettyIdentifier(context, untrusted = false)
-            val sanitizedIdentifier = identifier.replace("""[\\\/]""", "")
+            // Prevent directory traversals
-            val folderName =
+            val sanitizedIdentifier = identifier.replace('\\', '_')
-                sanitizedIdentifier.takeUnless { it.isBlank() } ?: formOrigin.identifier
+                .replace('/', '_')
+                .trimStart('.')
+                .takeUnless { it.isBlank() } ?: formOrigin.identifier
+            val directoryStructure = AutofillPreferences.directoryStructure(context)
+            val folderName = directoryStructure.getSaveFolderName(
+                sanitizedIdentifier = sanitizedIdentifier,
+                username = credentials?.username
+            )
+            val fileName = directoryStructure.getSaveFileName(username = credentials?.username)
             val intent = Intent(context, AutofillSaveActivity::class.java).apply {
                 putExtras(
                     bundleOf(
                         EXTRA_FOLDER_NAME to folderName,
+                        EXTRA_NAME to fileName,
                         EXTRA_PASSWORD to credentials?.password,
-                        EXTRA_USERNAME to credentials?.username,
                         EXTRA_SHOULD_MATCH_APP to formOrigin.identifier.takeIf { formOrigin is FormOrigin.App },
                         EXTRA_SHOULD_MATCH_WEB to formOrigin.identifier.takeIf { formOrigin is FormOrigin.Web },
                         EXTRA_GENERATE_PASSWORD to (credentials == null)
@@ -87,15 +96,13 @@ class AutofillSaveActivity : Activity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         val repo = PasswordRepository.getRepositoryDirectory(applicationContext)
-        val username = intent.getStringExtra(EXTRA_USERNAME)
-
         val saveIntent = Intent(this, PgpActivity::class.java).apply {
             putExtras(
                 bundleOf(
                     "REPO_PATH" to repo.absolutePath,
                     "FILE_PATH" to repo.resolve(intent.getStringExtra(EXTRA_FOLDER_NAME)).absolutePath,
                     "OPERATION" to "ENCRYPT",
-                    "SUGGESTED_NAME" to username,
+                    "SUGGESTED_NAME" to intent.getStringExtra(EXTRA_NAME),
                     "SUGGESTED_PASS" to intent.getStringExtra(EXTRA_PASSWORD),
                     "GENERATE_PASSWORD" to intent.getBooleanExtra(EXTRA_GENERATE_PASSWORD, false)
                 )

app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt

@@ -41,6 +41,8 @@ import com.zeapo.pwdstore.ClipboardService
 import com.zeapo.pwdstore.PasswordEntry
 import com.zeapo.pwdstore.R
 import com.zeapo.pwdstore.UserPreference
+import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
+import com.zeapo.pwdstore.autofill.oreo.DirectoryStructure
 import com.zeapo.pwdstore.ui.dialogs.PasswordGeneratorDialogFragment
 import com.zeapo.pwdstore.ui.dialogs.XkPasswordGeneratorDialogFragment
 import com.zeapo.pwdstore.utils.Otp
@@ -157,9 +159,23 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
                 }
 
                 title = getString(R.string.new_password_title)
-                crypto_password_category.text = getRelativePath(fullPath, repoPath)
+                crypto_password_category.apply {
-                suggestedName?.let {
+                    setText(getRelativePath(fullPath, repoPath))
-                    crypto_password_file_edit.setText(it)
+                    // If the activity has been provided with suggested info, we allow the user to
+                    // edit the path, otherwise we style the EditText like a TextView.
+                    if (suggestedName != null) {
+                        isEnabled = true
+                    } else {
+                        setBackgroundColor(getColor(android.R.color.transparent))
+                    }
+                }
+                suggestedName?.let { crypto_password_file_edit.setText(it) }
+                // Allow the user to quickly switch between storing the username as the filename or
+                // in the encrypted extras. This only makes sense if the directory structure is
+                // FileBased.
+                if (suggestedName != null &&
+                    AutofillPreferences.directoryStructure(this) == DirectoryStructure.FileBased
+                ) {
                     encrypt_username.apply {
                         visibility = View.VISIBLE
                         setOnClickListener {
@@ -549,7 +565,20 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
         val iStream = ByteArrayInputStream(content.toByteArray(Charset.forName("UTF-8")))
         val oStream = ByteArrayOutputStream()
 
-        val path = if (intent.getBooleanExtra("fromDecrypt", false)) fullPath else "$fullPath/$editName.gpg"
+        val path = when {
+            intent.getBooleanExtra("fromDecrypt", false) -> fullPath
+            // If we allowed the user to edit the relative path, we have to consider it here instead
+            // of fullPath.
+            crypto_password_category.isEnabled -> {
+                val editRelativePath = crypto_password_category.text!!.toString().trim()
+                if (editRelativePath.isEmpty()) {
+                    showSnackbar(resources.getString(R.string.path_toast_text))
+                    return
+                }
+                "$repoPath/${editRelativePath.trim('/')}/$editName.gpg"
+            }
+            else -> "$fullPath/$editName.gpg"
+        }
 
         lifecycleScope.launch(IO) {
             api?.executeApiAsync(data, iStream, oStream, object : OpenPgpApi.IOpenPgpCallback {
@@ -575,9 +604,14 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
                                 }
 
                                 if (shouldGeneratePassword) {
+                                    val directoryStructure =
+                                        AutofillPreferences.directoryStructure(applicationContext)
                                     val entry = PasswordEntry(content)
                                     returnIntent.putExtra("PASSWORD", entry.password)
-                                    returnIntent.putExtra("USERNAME", entry.username ?: file.nameWithoutExtension)
+                                    returnIntent.putExtra(
+                                        "USERNAME",
+                                        directoryStructure.getUsernameFor(file)
+                                    )
                                 }
 
                                 setResult(RESULT_OK, returnIntent)
@@ -615,7 +649,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
         crypto_extra_edit.setText(passwordEntry?.extraContent)
         crypto_extra_edit.typeface = monoTypeface
 
-        crypto_password_category.text = relativeParentPath
+        crypto_password_category.setText(relativeParentPath)
         crypto_password_file_edit.setText(name)
         crypto_password_file_edit.isEnabled = false
 

app/src/main/res/layout/encrypt_layout.xml

@@ -9,13 +9,13 @@
     android:padding="@dimen/activity_horizontal_margin"
     tools:context="com.zeapo.pwdstore.crypto.PgpActivity">
 
-    <androidx.appcompat.widget.AppCompatTextView
+    <androidx.appcompat.widget.AppCompatEditText
         android:id="@+id/crypto_password_category"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:textColor="?android:attr/textColor"
-        android:textIsSelectable="false"
+        android:enabled="false"
         android:textSize="18sp"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"

app/src/main/res/values/arrays.xml

@@ -51,5 +51,13 @@
         <item>classic</item>
         <item>xkpasswd</item>
     </string-array>
+    <string-array name="oreo_autofill_directory_structure_entries">
+        <item>/example.org/john@doe.org(.gpg)</item>
+        <item>/example.org/john@doe.org/password(.gpg)</item>
+    </string-array>
+    <string-array name="oreo_autofill_directory_structure_values">
+        <item>file</item>
+        <item>directory</item>
+    </string-array>
 
 </resources>

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

@@ -42,6 +42,7 @@
     <string name="clipboard_username_toast_text">Username copied to clipboard</string>
     <string name="clipboard_otp_toast_text">OTP code copied to clipboard</string>
     <string name="file_toast_text">Please provide a file name</string>
+    <string name="path_toast_text">Please provide a file path</string>
     <string name="empty_toast_text">You cannot use an empty password or empty extra content</string>
 
     <!-- Git Async Task -->
@@ -268,6 +269,7 @@
     <string name="oreo_autofill_fill_support">Fill credentials</string>
     <string name="oreo_autofill_flaky_fill_support">Fill credentials (may require restarting the browser from time to time)</string>
     <string name="oreo_autofill_no_support">No support</string>
+    <string name="oreo_autofill_preference_directory_structure">Password file organization</string>
 
     <!-- Autofill -->
     <string name="autofill_description">Autofills password fields in apps. Only works for Android versions 4.3 and up. Does not rely on the clipboard for Android versions 5.0 and up.</string>

app/src/main/res/xml/preference.xml

@@ -6,6 +6,13 @@
             app:defaultValue="true"
             app:key="autofill_enable"
             app:title="@string/pref_autofill_enable_title"/>
+        <androidx.preference.ListPreference
+            app:defaultValue="file"
+            app:entries="@array/oreo_autofill_directory_structure_entries"
+            app:entryValues="@array/oreo_autofill_directory_structure_values"
+            app:key="oreo_autofill_directory_structure"
+            app:title="@string/oreo_autofill_preference_directory_structure"
+            app:useSimpleSummaryProvider="true" />
         <androidx.preference.Preference
             app:key="autofill_apps"
             app:title="@string/pref_autofill_apps_title"/>