Added - file encryption, custom key creation.
This commit is contained in:
Binondi
@@ -2,7 +2,10 @@ package devs.org.calculator.activities
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import android.net.Uri
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import android.os.Bundle
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import android.os.Handler
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import android.os.Looper
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import android.view.WindowManager
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import android.widget.Toast
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import androidx.appcompat.app.AppCompatActivity
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import androidx.lifecycle.lifecycleScope
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import androidx.viewpager2.widget.ViewPager2
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@@ -14,6 +17,7 @@ import devs.org.calculator.databinding.ActivityPreviewBinding
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import devs.org.calculator.utils.DialogUtil
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import devs.org.calculator.utils.FileManager
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import devs.org.calculator.utils.PrefsUtil
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import devs.org.calculator.utils.SecurityUtils
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import kotlinx.coroutines.launch
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import java.io.File
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@@ -28,6 +32,7 @@ class PreviewActivity : AppCompatActivity() {
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private lateinit var adapter: ImagePreviewAdapter
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private lateinit var fileManager: FileManager
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private val dialogUtil = DialogUtil(this)
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private val mainHandler = Handler(Looper.getMainLooper())
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private val prefs: PrefsUtil by lazy { PrefsUtil(this) }
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private val hiddenFileRepository: HiddenFileRepository by lazy {
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HiddenFileRepository(AppDatabase.getDatabase(this).hiddenFileDao())
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@@ -81,14 +86,17 @@ class PreviewActivity : AppCompatActivity() {
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filetype = FileManager.FileType.IMAGE
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binding.title.text = getString(R.string.preview_images)
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}
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"VIDEO" -> {
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filetype = FileManager.FileType.VIDEO
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binding.title.text = getString(R.string.preview_videos)
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}
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"AUDIO" -> {
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filetype = FileManager.FileType.AUDIO
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binding.title.text = getString(R.string.preview_audios)
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}
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else -> {
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filetype = FileManager.FileType.DOCUMENT
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binding.title.text = getString(R.string.preview_documents)
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@@ -154,7 +162,7 @@ class PreviewActivity : AppCompatActivity() {
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}
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binding.unHide.setOnClickListener {
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handleUnhideFile()
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performFileUnHiding()
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}
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binding.viewPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
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override fun onPageSelected(position: Int) {
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@@ -181,7 +189,8 @@ class PreviewActivity : AppCompatActivity() {
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override fun onPositiveButtonClicked() {
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lifecycleScope.launch {
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try {
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val hiddenFile = hiddenFileRepository.getHiddenFileByPath(currentFile.absolutePath)
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val hiddenFile =
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hiddenFileRepository.getHiddenFileByPath(currentFile.absolutePath)
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hiddenFile?.let {
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hiddenFileRepository.deleteHiddenFile(it)
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}
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@@ -202,43 +211,113 @@ class PreviewActivity : AppCompatActivity() {
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}
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}
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private fun handleUnhideFile() {
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private fun performFileUnHiding() {
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if (files.isEmpty() || currentPosition >= files.size) return
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val file = files[currentPosition]
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val currentFile = files[currentPosition]
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val fileUri = FileManager.FileManager().getContentUriImage(this, currentFile)
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dialogUtil.showMaterialDialog(
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getString(R.string.un_hide_file),
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getString(R.string.are_you_sure_you_want_to_un_hide_this_file),
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getString(R.string.un_hide),
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getString(R.string.cancel),
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object : DialogUtil.DialogCallback {
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override fun onPositiveButtonClicked() {
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lifecycleScope.launch {
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var allUnhidden = true
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try {
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val hiddenFile = hiddenFileRepository.getHiddenFileByPath(file.absolutePath)
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if (hiddenFile != null){
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if (hiddenFile.isEncrypted) {
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val originalExtension = hiddenFile.originalExtension
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val decryptedFile = SecurityUtils.changeFileExtension(file, originalExtension)
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if (fileUri != null) {
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dialogUtil.showMaterialDialog(
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getString(R.string.un_hide_file),
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getString(R.string.are_you_sure_you_want_to_un_hide_this_file),
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getString(R.string.un_hide),
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getString(R.string.cancel),
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object : DialogUtil.DialogCallback {
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override fun onPositiveButtonClicked() {
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lifecycleScope.launch {
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try {
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val result = fileManager.copyFileToNormalDir(fileUri)
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if (result != null) {
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val hiddenFile = hiddenFileRepository.getHiddenFileByPath(currentFile.absolutePath)
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hiddenFile?.let {
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hiddenFileRepository.deleteHiddenFile(it)
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if (SecurityUtils.decryptFile(this@PreviewActivity, file, decryptedFile)) {
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if (decryptedFile.exists() && decryptedFile.length() > 0) {
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val fileUri = FileManager.FileManager()
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.getContentUriImage(this@PreviewActivity, decryptedFile)
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if (fileUri != null) {
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val result = fileManager.copyFileToNormalDir(fileUri)
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if (result != null) {
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hiddenFile.let {
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hiddenFileRepository.deleteHiddenFile(it)
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}
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file.delete()
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decryptedFile.delete()
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removeFileFromList(currentPosition)
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} else {
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decryptedFile.delete()
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allUnhidden = false
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}
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} else {
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decryptedFile.delete()
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allUnhidden = false
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}
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} else {
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decryptedFile.delete()
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allUnhidden = false
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}
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} else {
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if (decryptedFile.exists()) {
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decryptedFile.delete()
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}
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allUnhidden = false
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}
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} else {
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val fileUri = FileManager.FileManager().getContentUriImage(this@PreviewActivity, file)
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if (fileUri != null) {
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val result = fileManager.copyFileToNormalDir(fileUri)
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if (result != null) {
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hiddenFile.let {
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hiddenFileRepository.deleteHiddenFile(it)
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}
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file.delete()
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removeFileFromList(currentPosition)
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} else {
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allUnhidden = false
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}
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} else {
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allUnhidden = false
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}
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removeFileFromList(currentPosition)
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}
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} catch (e: Exception) {
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e.printStackTrace()
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}else{
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val fileUri = FileManager.FileManager().getContentUriImage(this@PreviewActivity, file)
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if (fileUri != null) {
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val result = fileManager.copyFileToNormalDir(fileUri)
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if (result != null) {
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file.delete()
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removeFileFromList(currentPosition)
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} else {
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allUnhidden = false
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}
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} else {
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allUnhidden = false
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}
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}
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} catch (_: Exception) {
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allUnhidden = false
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}
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mainHandler.post {
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val message = if (allUnhidden) {
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getString(R.string.file_unhidden_successfully)
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} else {
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getString(R.string.something_went_wrong)
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}
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Toast.makeText(this@PreviewActivity, message, Toast.LENGTH_SHORT).show()
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}
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}
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override fun onNegativeButtonClicked() {}
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override fun onNaturalButtonClicked() {}
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}
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)
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}
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override fun onNegativeButtonClicked() {}
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override fun onNaturalButtonClicked() {}
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}
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)
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}
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private fun removeFileFromList(position: Int) {
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@@ -175,4 +175,5 @@
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<string name="select_file_type">Select File Type!</string>
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<string name="please_select_the_type_of_file_to_decrypt">Please select the type of file to decrypt</string>
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<string name="file_no_longer_exists">File no longer exists</string>
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<string name="something_went_wrong">Something went wrong !</string>
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</resources>
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