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android: Refactor zip code into FileUtil

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This commit is contained in:
Charles Lombardo 2023-09-26 13:26:06 -04:00
parent e9e6296893
commit c8673a16bb
4 changed files with 89 additions and 91 deletions
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6
src/android/app/src/main/java/org/yuzu/yuzu_emu/model/TaskViewModel.kt
View file

@ -50,3 +50,9 @@ class TaskViewModel : ViewModel() {
}
}
}
enum class TaskState {
Completed,
Failed,
Cancelled
}

106
src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/main/MainActivity.kt
View file

@ -51,17 +51,16 @@ import org.yuzu.yuzu_emu.fragments.MessageDialogFragment
import org.yuzu.yuzu_emu.getPublicFilesDir
import org.yuzu.yuzu_emu.model.GamesViewModel
import org.yuzu.yuzu_emu.model.HomeViewModel
import org.yuzu.yuzu_emu.model.TaskState
import org.yuzu.yuzu_emu.model.TaskViewModel
import org.yuzu.yuzu_emu.utils.*
import java.io.BufferedInputStream
import java.io.BufferedOutputStream
import java.io.FileInputStream
import java.io.FileOutputStream
import java.time.LocalDateTime
import java.time.format.DateTimeFormatter
import java.util.zip.ZipEntry
import java.util.zip.ZipInputStream
import java.util.zip.ZipOutputStream
class MainActivity : AppCompatActivity(), ThemeProvider {
private lateinit var binding: ActivityMainBinding
@ -396,7 +395,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
val task: () -> Any = {
var messageToShow: Any
try {
FileUtil.unzip(inputZip, cacheFirmwareDir)
FileUtil.unzipToInternalStorage(BufferedInputStream(inputZip), cacheFirmwareDir)
val unfilteredNumOfFiles = cacheFirmwareDir.list()?.size ?: -1
val filteredNumOfFiles = cacheFirmwareDir.list(filterNCA)?.size ?: -2
messageToShow = if (unfilteredNumOfFiles != filteredNumOfFiles) {
@ -639,35 +638,17 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
R.string.exporting_user_data,
true
) {
val zos = ZipOutputStream(
BufferedOutputStream(contentResolver.openOutputStream(result))
val zipResult = FileUtil.zipFromInternalStorage(
File(DirectoryInitialization.userDirectory!!),
DirectoryInitialization.userDirectory!!,
BufferedOutputStream(contentResolver.openOutputStream(result)),
taskViewModel.cancelled
)
zos.use { stream ->
File(DirectoryInitialization.userDirectory!!).walkTopDown().forEach { file ->
if (taskViewModel.cancelled.value) {
return@newInstance R.string.user_data_export_cancelled
}
if (!file.isDirectory) {
val newPath = file.path.substring(
DirectoryInitialization.userDirectory!!.length,
file.path.length
)
stream.putNextEntry(ZipEntry(newPath))
val buffer = ByteArray(8096)
var read: Int
FileInputStream(file).use { fis ->
while (fis.read(buffer).also { read = it } != -1) {
stream.write(buffer, 0, read)
}
}
stream.closeEntry()
}
}
return@newInstance when (zipResult) {
TaskState.Completed -> getString(R.string.user_data_export_success)
TaskState.Failed -> R.string.export_failed
TaskState.Cancelled -> R.string.user_data_export_cancelled
}
return@newInstance getString(R.string.user_data_export_success)
}.show(supportFragmentManager, IndeterminateProgressDialogFragment.TAG)
}
@ -698,40 +679,17 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
return@newInstance getString(R.string.invalid_yuzu_backup)
}
// Clear existing user data
File(DirectoryInitialization.userDirectory!!).deleteRecursively()
val zis =
ZipInputStream(BufferedInputStream(contentResolver.openInputStream(result)))
val userDirectory = File(DirectoryInitialization.userDirectory!!)
val canonicalPath = userDirectory.canonicalPath + '/'
zis.use { stream ->
var ze: ZipEntry? = stream.nextEntry
while (ze != null) {
val newFile = File(userDirectory, ze!!.name)
val destinationDirectory =
if (ze!!.isDirectory) newFile else newFile.parentFile
if (!newFile.canonicalPath.startsWith(canonicalPath)) {
throw SecurityException(
"Zip file attempted path traversal! ${ze!!.name}"
)
}
if (!destinationDirectory.isDirectory && !destinationDirectory.mkdirs()) {
throw IOException("Failed to create directory $destinationDirectory")
}
if (!ze!!.isDirectory) {
val buffer = ByteArray(8096)
var read: Int
BufferedOutputStream(FileOutputStream(newFile)).use { bos ->
while (zis.read(buffer).also { read = it } != -1) {
bos.write(buffer, 0, read)
}
}
}
ze = stream.nextEntry
}
// Copy archive to internal storage
try {
FileUtil.unzipToInternalStorage(
BufferedInputStream(contentResolver.openInputStream(result)),
File(DirectoryInitialization.userDirectory!!)
)
} catch (e: Exception) {
return@newInstance getString(R.string.invalid_yuzu_backup)
}
// Reinitialize relevant data
@ -758,19 +716,13 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
}.zip"
)
outputZipFile.createNewFile()
ZipOutputStream(BufferedOutputStream(FileOutputStream(outputZipFile))).use { zos ->
saveFolder.walkTopDown().forEach { file ->
val zipFileName =
file.absolutePath.removePrefix(savesFolderRoot).removePrefix("/")
if (zipFileName == "") {
return@forEach
}
val entry = ZipEntry("$zipFileName${(if (file.isDirectory) "/" else "")}")
zos.putNextEntry(entry)
if (file.isFile) {
file.inputStream().use { fis -> fis.copyTo(zos) }
}
}
val result = FileUtil.zipFromInternalStorage(
saveFolder,
savesFolderRoot,
BufferedOutputStream(FileOutputStream(outputZipFile))
)
if (result == TaskState.Failed) {
return false
}
lastZipCreated = outputZipFile
} catch (e: Exception) {
@ -832,7 +784,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
NativeLibrary.initializeEmptyUserDirectory()
val inputZip = applicationContext.contentResolver.openInputStream(result)
val inputZip = contentResolver.openInputStream(result)
// A zip needs to have at least one subfolder named after a TitleId in order to be considered valid.
var validZip = false
val savesFolder = File(savesFolderRoot)
@ -853,7 +805,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
try {
CoroutineScope(Dispatchers.IO).launch {
FileUtil.unzip(inputZip, cacheSaveDir)
FileUtil.unzipToInternalStorage(BufferedInputStream(inputZip), cacheSaveDir)
cacheSaveDir.list(filterTitleId)?.forEach { savePath ->
File(savesFolder, savePath).deleteRecursively()
File(cacheSaveDir, savePath).copyRecursively(

67
src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/FileUtil.kt
View file

@ -8,6 +8,7 @@ import android.database.Cursor
import android.net.Uri
import android.provider.DocumentsContract
import androidx.documentfile.provider.DocumentFile
import kotlinx.coroutines.flow.StateFlow
import java.io.BufferedInputStream
import java.io.File
import java.io.FileOutputStream
@ -18,6 +19,9 @@ import java.util.zip.ZipEntry
import java.util.zip.ZipInputStream
import org.yuzu.yuzu_emu.YuzuApplication
import org.yuzu.yuzu_emu.model.MinimalDocumentFile
import org.yuzu.yuzu_emu.model.TaskState
import java.io.BufferedOutputStream
import java.util.zip.ZipOutputStream
object FileUtil {
const val PATH_TREE = "tree"
@ -282,30 +286,65 @@ object FileUtil {
/**
* Extracts the given zip file into the given directory.
* @exception IOException if the file was being created outside of the target directory
*/
@Throws(SecurityException::class)
fun unzip(zipStream: InputStream, destDir: File): Boolean {
ZipInputStream(BufferedInputStream(zipStream)).use { zis ->
fun unzipToInternalStorage(zipStream: BufferedInputStream, destDir: File) {
ZipInputStream(zipStream).use { zis ->
var entry: ZipEntry? = zis.nextEntry
while (entry != null) {
val entryName = entry.name
val entryFile = File(destDir, entryName)
if (!entryFile.canonicalPath.startsWith(destDir.canonicalPath + File.separator)) {
throw SecurityException("Entry is outside of the target dir: " + entryFile.name)
val newFile = File(destDir, entry.name)
val destinationDirectory = if (entry.isDirectory) newFile else newFile.parentFile
if (!newFile.canonicalPath.startsWith(destDir.canonicalPath + File.separator)) {
throw SecurityException("Zip file attempted path traversal! ${entry.name}")
}
if (entry.isDirectory) {
entryFile.mkdirs()
} else {
entryFile.parentFile?.mkdirs()
entryFile.createNewFile()
entryFile.outputStream().use { fos -> zis.copyTo(fos) }
if (!destinationDirectory.isDirectory && !destinationDirectory.mkdirs()) {
throw IOException("Failed to create directory $destinationDirectory")
}
if (!entry.isDirectory) {
newFile.outputStream().use { fos -> zis.copyTo(fos) }
}
entry = zis.nextEntry
}
}
}
return true
/**
* Creates a zip file from a directory within internal storage
* @param inputFile File representation of the item that will be zipped
* @param rootDir Directory containing the inputFile
* @param outputStream Stream where the zip file will be output
*/
fun zipFromInternalStorage(
inputFile: File,
rootDir: String,
outputStream: BufferedOutputStream,
cancelled: StateFlow<Boolean>? = null
): TaskState {
try {
ZipOutputStream(outputStream).use { zos ->
inputFile.walkTopDown().forEach { file ->
if (cancelled?.value == true) {
return TaskState.Cancelled
}
if (!file.isDirectory) {
val entryName =
file.absolutePath.removePrefix(rootDir).removePrefix("/")
val entry = ZipEntry(entryName)
zos.putNextEntry(entry)
if (file.isFile) {
file.inputStream().use { fis -> fis.copyTo(zos) }
}
}
}
}
} catch (e: Exception) {
return TaskState.Failed
}
return TaskState.Completed
}
fun isRootTreeUri(uri: Uri): Boolean {

1
src/android/app/src/main/res/values/strings.xml
View file

@ -229,6 +229,7 @@
<string name="string_null">Null</string>
<string name="string_import">Import</string>
<string name="export">Export</string>
<string name="export_failed">Export failed</string>
<string name="cancelling">Cancelling</string>
<!-- GPU driver installation -->