Add support for creating password protected zips

app/build.gradle

@@ -64,7 +64,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.SimpleMobileTools:Simple-Commons:84c71fdcc1'
+    implementation 'com.github.SimpleMobileTools:Simple-Commons:db25f91be3'
     implementation 'com.github.tibbi:AndroidPdfViewer:e6a533125b'
     implementation 'com.github.Stericson:RootTools:df729dcb13'
     implementation 'com.github.Stericson:RootShell:1.6'
@@ -72,4 +72,5 @@ dependencies {
     implementation 'androidx.documentfile:documentfile:1.0.1'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
     implementation 'me.grantland:autofittextview:0.2.1'
+    implementation 'net.lingala.zip4j:zip4j:2.11.5'
 }

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt

@@ -44,13 +44,14 @@ import kotlinx.android.synthetic.main.item_file_dir_list.view.item_icon
 import kotlinx.android.synthetic.main.item_file_dir_list.view.item_name
 import kotlinx.android.synthetic.main.item_file_grid.view.*
 import kotlinx.android.synthetic.main.item_section.view.*
+import net.lingala.zip4j.io.outputstream.ZipOutputStream
+import net.lingala.zip4j.model.ZipParameters
 import java.io.BufferedInputStream
 import java.io.Closeable
 import java.io.File
 import java.util.*
 import java.util.zip.ZipEntry
 import java.util.zip.ZipInputStream
-import java.util.zip.ZipOutputStream
 
 class ItemsAdapter(
     activity: SimpleActivity, var listItems: MutableList<ListItem>, val listener: ItemOperationsListener?, recyclerView: MyRecyclerView,
@@ -482,8 +483,7 @@ class ItemsAdapter(
             return
         }
 
-        CompressAsDialog(activity, firstPath) {
+        CompressAsDialog(activity, firstPath) { destination, password ->
-            val destination = it
             activity.handleAndroidSAFDialog(firstPath) { granted ->
                 if (!granted) {
                     return@handleAndroidSAFDialog
@@ -496,7 +496,7 @@ class ItemsAdapter(
                     activity.toast(R.string.compressing)
                     val paths = getSelectedFileDirItems().map { it.path }
                     ensureBackgroundThread {
-                        if (compressPaths(paths, destination)) {
+                        if (compressPaths(paths, destination, password)) {
                             activity.runOnUiThread {
                                 activity.toast(R.string.compression_successful)
                                 listener?.refreshFragment()
@@ -643,13 +643,17 @@ class ItemsAdapter(
     }
 
     @SuppressLint("NewApi")
-    private fun compressPaths(sourcePaths: List<String>, targetPath: String): Boolean {
+    private fun compressPaths(sourcePaths: List<String>, targetPath: String, password: String? = null): Boolean {
         val queue = LinkedList<String>()
         val fos = activity.getFileOutputStreamSync(targetPath, "application/zip") ?: return false
 
-        val zout = ZipOutputStream(fos)
+        val zout = password?.let { ZipOutputStream(fos, password.toCharArray()) } ?: ZipOutputStream(fos)
         var res: Closeable = fos
 
+        fun zipEntry(name: String) = ZipParameters().also {
+            it.fileNameInZip = name
+        }
+
         try {
             sourcePaths.forEach { currentPath ->
                 var name: String
@@ -659,7 +663,11 @@ class ItemsAdapter(
                 queue.push(mainFilePath)
                 if (activity.getIsPathDirectory(mainFilePath)) {
                     name = "${mainFilePath.getFilenameFromPath()}/"
-                    zout.putNextEntry(ZipEntry(name))
+                    zout.putNextEntry(
+                        ZipParameters().also {
+                            it.fileNameInZip = name
+                        }
+                    )
                 }
 
                 while (!queue.isEmpty()) {
@@ -672,9 +680,9 @@ class ItemsAdapter(
                                     if (activity.getIsPathDirectory(file.path)) {
                                         queue.push(file.path)
                                         name = "${name.trimEnd('/')}/"
-                                        zout.putNextEntry(ZipEntry(name))
+                                        zout.putNextEntry(zipEntry(name))
                                     } else {
-                                        zout.putNextEntry(ZipEntry(name))
+                                        zout.putNextEntry(zipEntry(name))
                                         activity.getFileInputStreamSync(file.path)!!.copyTo(zout)
                                         zout.closeEntry()
                                     }
@@ -687,9 +695,9 @@ class ItemsAdapter(
                                 if (activity.getIsPathDirectory(file.absolutePath)) {
                                     queue.push(file.absolutePath)
                                     name = "${name.trimEnd('/')}/"
-                                    zout.putNextEntry(ZipEntry(name))
+                                    zout.putNextEntry(zipEntry(name))
                                 } else {
-                                    zout.putNextEntry(ZipEntry(name))
+                                    zout.putNextEntry(zipEntry(name))
                                     activity.getFileInputStreamSync(file.path)!!.copyTo(zout)
                                     zout.closeEntry()
                                 }
@@ -698,7 +706,7 @@ class ItemsAdapter(
 
                     } else {
                         name = if (base == currentPath) currentPath.getFilenameFromPath() else mainFilePath.relativizeWith(base)
-                        zout.putNextEntry(ZipEntry(name))
+                        zout.putNextEntry(zipEntry(name))
                         activity.getFileInputStreamSync(mainFilePath)!!.copyTo(zout)
                         zout.closeEntry()
                     }

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/dialogs/CompressAsDialog.kt

@@ -7,10 +7,9 @@ import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.filemanager.pro.R
 import com.simplemobiletools.filemanager.pro.extensions.config
-import kotlinx.android.synthetic.main.dialog_compress_as.view.filename_value
+import kotlinx.android.synthetic.main.dialog_compress_as.view.*
-import kotlinx.android.synthetic.main.dialog_compress_as.view.folder
 
-class CompressAsDialog(val activity: BaseSimpleActivity, val path: String, val callback: (destination: String) -> Unit) {
+class CompressAsDialog(val activity: BaseSimpleActivity, val path: String, val callback: (destination: String, password: String?) -> Unit) {
     private val view = activity.layoutInflater.inflate(R.layout.dialog_compress_as, null)
 
     init {
@@ -29,6 +28,10 @@ class CompressAsDialog(val activity: BaseSimpleActivity, val path: String, val c
                     realPath = it
                 }
             }
+
+            password_protect.setOnCheckedChangeListener { _, _ ->
+                enter_password_hint.beVisibleIf(password_protect.isChecked)
+            }
         }
 
         activity.getAlertDialogBuilder()
@@ -39,6 +42,14 @@ class CompressAsDialog(val activity: BaseSimpleActivity, val path: String, val c
                     alertDialog.showKeyboard(view.filename_value)
                     alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(View.OnClickListener {
                         val name = view.filename_value.value
+                        var password: String? = null
+                        if (view.password_protect.isChecked) {
+                            password = view.password.value
+                            if (password.isEmpty()) {
+                                activity.toast(R.string.empty_password)
+                                return@OnClickListener
+                            }
+                        }
                         when {
                             name.isEmpty() -> activity.toast(R.string.empty_name)
                             name.isAValidFilename() -> {
@@ -49,8 +60,9 @@ class CompressAsDialog(val activity: BaseSimpleActivity, val path: String, val c
                                 }
 
                                 alertDialog.dismiss()
-                                callback(newPath)
+                                callback(newPath, password)
                             }
+
                             else -> activity.toast(R.string.invalid_name)
                         }
                     })

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

@@ -27,6 +27,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@+id/folder_hint"
+        android:layout_marginBottom="@dimen/activity_margin"
         android:hint="@string/filename_without_zip">
 
         <com.google.android.material.textfield.TextInputEditText
@@ -39,4 +40,34 @@
             android:textSize="@dimen/bigger_text_size" />
 
     </com.simplemobiletools.commons.views.MyTextInputLayout>
+
+    <com.simplemobiletools.commons.views.MyAppCompatCheckbox
+        android:id="@+id/password_protect"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/filename_hint"
+        android:layout_marginTop="@dimen/small_margin"
+        android:paddingTop="@dimen/normal_margin"
+        android:paddingBottom="@dimen/normal_margin"
+        android:text="@string/password" />
+
+    <com.simplemobiletools.commons.views.MyTextInputLayout
+        android:id="@+id/enter_password_hint"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/password_protect"
+        android:hint="@string/password"
+        android:visibility="gone">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/password"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/activity_margin"
+            android:inputType="textPassword"
+            android:singleLine="true"
+            android:textCursorDrawable="@null"
+            android:textSize="@dimen/normal_text_size" />
+
+    </com.simplemobiletools.commons.views.MyTextInputLayout>
 </RelativeLayout>