Update target API to 30 (Android 11)

Write external storage got removed due to forced scoped storage. Local storage cloud is now only available using the storage access framework implementation. Migration still needs to be implemented as well as how to recover when the authentications fails in the LocalStorageAuthStrategy.

Fixes #251

buildsystem/dependencies.gradle

@@ -8,8 +8,8 @@ allprojects {
 ext {
 	androidBuildToolsVersion = "30.0.2"
 	androidMinSdkVersion = 24
-	androidTargetSdkVersion = 29
-	androidCompileSdkVersion = 29
+	androidTargetSdkVersion = 30
+	androidCompileSdkVersion = 30
 
 	// android and java libs
 	androidVersion = '4.1.1.4'

data/src/main/java/org/cryptomator/data/cloud/crypto/CryptoCloud.java

@@ -31,11 +31,6 @@ private boolean configurationMatches(CryptoCloud cloud) {
 		return vault.equals(cloud.vault);
 	}
 
-	@Override
-	public boolean predefined() {
-		return false;
-	}
-
 	@Override
 	public boolean persistent() {
 		return false;

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/DocumentIdCache.kt → data/src/main/java/org/cryptomator/data/cloud/local/DocumentIdCache.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.util.LruCache
 import org.cryptomator.domain.CloudFolder

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessFile.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessFile.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.net.Uri
 import org.cryptomator.domain.Cloud

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessFolder.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessFolder.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.net.Uri
 import org.cryptomator.domain.Cloud

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessFrameworkContentRepository.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessFrameworkContentRepository.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.content.Context
 import org.cryptomator.domain.LocalStorageCloud

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessFrameworkImpl.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessFrameworkImpl.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.content.ContentResolver
 import android.content.Context
@@ -7,10 +7,10 @@ import android.net.Uri
 import android.os.Build
 import android.provider.DocumentsContract
 import androidx.documentfile.provider.DocumentFile
-import org.cryptomator.data.cloud.local.storageaccessframework.LocalStorageAccessFrameworkNodeFactory.file
-import org.cryptomator.data.cloud.local.storageaccessframework.LocalStorageAccessFrameworkNodeFactory.folder
-import org.cryptomator.data.cloud.local.storageaccessframework.LocalStorageAccessFrameworkNodeFactory.from
-import org.cryptomator.data.cloud.local.storageaccessframework.LocalStorageAccessFrameworkNodeFactory.getNodePath
+import org.cryptomator.data.cloud.local.LocalStorageAccessFrameworkNodeFactory.file
+import org.cryptomator.data.cloud.local.LocalStorageAccessFrameworkNodeFactory.folder
+import org.cryptomator.data.cloud.local.LocalStorageAccessFrameworkNodeFactory.from
+import org.cryptomator.data.cloud.local.LocalStorageAccessFrameworkNodeFactory.getNodePath
 import org.cryptomator.data.util.CopyStream
 import org.cryptomator.data.util.TransferredBytesAwareInputStream
 import org.cryptomator.data.util.TransferredBytesAwareOutputStream
@@ -243,7 +243,8 @@ internal class LocalStorageAccessFrameworkImpl(context: Context, private val mim
 	private fun rename(source: LocalStorageAccessNode, name: String): LocalStorageAccessNode {
 		source.parent?.let { parent ->
 			var newUri = try {
-				DocumentsContract.renameDocument(contentResolver(), source.uri, name)
+				requireNotNull(source.uri)
+				DocumentsContract.renameDocument(contentResolver(), source.uri!!, name)
 			} catch (e: FileNotFoundException) {
 				/* Bug in Android 9 see #460 TLDR; In this renameDocument-method, Android 9 throws
 					a `FileNotFoundException` although the file exists and is also renamed. */
@@ -336,11 +337,13 @@ internal class LocalStorageAccessFrameworkImpl(context: Context, private val mim
 
 	private fun createNewDocumentSupplier(file: LocalStorageAccessFile): Supplier<Uri?> {
 		return Supplier {
-			val mimeType = if (mimeTypes.fromFilename(file.name) == null) MimeType.APPLICATION_OCTET_STREAM else mimeTypes.fromFilename(file.name)
-			try {
-				DocumentsContract.createDocument(contentResolver(), file.parent.uri, mimeType.toString(), file.name) // FIXME
-			} catch (e: FileNotFoundException) {
-				null
+			file.parent.uri?.let {
+				val mimeType = if (mimeTypes.fromFilename(file.name) == null) MimeType.APPLICATION_OCTET_STREAM else mimeTypes.fromFilename(file.name)
+				try {
+					DocumentsContract.createDocument(contentResolver(), it, mimeType.toString(), file.name) // FIXME
+				} catch (e: FileNotFoundException) {
+					null
+				}
 			}
 		}
 	}
@@ -372,7 +375,7 @@ internal class LocalStorageAccessFrameworkImpl(context: Context, private val mim
 	fun delete(node: LocalStorageAccessNode) {
 		requireNotNull(node.uri)
 		try {
-			DocumentsContract.deleteDocument(contentResolver(), node.uri)
+			DocumentsContract.deleteDocument(contentResolver(), node.uri!!)
 		} catch (e: FileNotFoundException) {
 			throw NoSuchCloudFileException(node.name)
 		}

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessFrameworkNodeFactory.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessFrameworkNodeFactory.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.database.Cursor
 import android.provider.DocumentsContract

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/LocalStorageAccessNode.kt → data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageAccessNode.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.net.Uri
 import org.cryptomator.domain.CloudNode

data/src/main/java/org/cryptomator/data/cloud/local/LocalStorageContentRepositoryFactory.java

@@ -1,25 +1,22 @@
 package org.cryptomator.data.cloud.local;
 
+import static org.cryptomator.domain.CloudType.LOCAL;
+
 import android.content.Context;
+import android.content.UriPermission;
 
-import org.cryptomator.data.cloud.local.file.LocalStorageContentRepository;
-import org.cryptomator.data.cloud.local.storageaccessframework.LocalStorageAccessFrameworkContentRepository;
 import org.cryptomator.data.repository.CloudContentRepositoryFactory;
 import org.cryptomator.domain.Cloud;
 import org.cryptomator.domain.LocalStorageCloud;
 import org.cryptomator.domain.exception.authentication.NoAuthenticationProvidedException;
 import org.cryptomator.domain.repository.CloudContentRepository;
 import org.cryptomator.util.file.MimeTypes;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
-import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
-import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
-import static android.content.pm.PackageManager.PERMISSION_GRANTED;
-import static androidx.core.content.ContextCompat.checkSelfPermission;
-import static org.cryptomator.domain.CloudType.LOCAL;
-
 @Singleton
 public class LocalStorageContentRepositoryFactory implements CloudContentRepositoryFactory {
 
@@ -39,23 +36,14 @@ public boolean supports(Cloud cloud) {
 
 	@Override
 	public CloudContentRepository cloudContentRepositoryFor(Cloud cloud) {
-		if (!hasPermissions(WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE)) {
-			throw new NoAuthenticationProvidedException(cloud);
-		}
-		if (((LocalStorageCloud) cloud).rootUri() != null) {
-			return new LocalStorageAccessFrameworkContentRepository(context, mimeTypes, (LocalStorageCloud) cloud);
-		} else {
-			return new LocalStorageContentRepository(context, (LocalStorageCloud) cloud);
-		}
-	}
-
-	private boolean hasPermissions(String... permissions) {
-		for (String permission : permissions) {
-			if (checkSelfPermission(context, permission) != PERMISSION_GRANTED) {
-				return false;
+		List<UriPermission> permissions = context.getContentResolver().getPersistedUriPermissions();
+		for (UriPermission permission : permissions) {
+			if(permission.getUri().toString().equals(((LocalStorageCloud) cloud).rootUri())) {
+				return new LocalStorageAccessFrameworkContentRepository(context, mimeTypes, (LocalStorageCloud) cloud);
 			}
 		}
-		return true;
+
+		throw new NoAuthenticationProvidedException(cloud);
 	}
 
 }

data/src/main/java/org/cryptomator/data/cloud/local/storageaccessframework/RootLocalStorageAccessFolder.kt → data/src/main/java/org/cryptomator/data/cloud/local/RootLocalStorageAccessFolder.kt

@@ -1,4 +1,4 @@
-package org.cryptomator.data.cloud.local.storageaccessframework
+package org.cryptomator.data.cloud.local
 
 import android.net.Uri
 import android.provider.DocumentsContract