Merge branch 'feature/pcloud' into develop

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "subsampling-scale-image-view"]
 	path = subsampling-scale-image-view
 	url = https://github.com/SailReal/subsampling-scale-image-view.git
+[submodule "pcloud-sdk-java"]
+	path = pcloud-sdk-java
+	url = https://github.com/SailReal/pcloud-sdk-java

.idea/vcs.xml

@@ -3,6 +3,7 @@
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/msa-auth-for-android" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/pcloud-sdk-java" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/subsampling-scale-image-view" vcs="Git" />
   </component>
 </project>

data/build.gradle

@@ -74,7 +74,7 @@ android {
 }
 
 greendao {
-	schemaVersion 4
+	schemaVersion 5
 }
 
 configurations.all {
@@ -88,6 +88,7 @@ dependencies {
 	implementation project(':domain')
 	implementation project(':util')
 	implementation project(':msa-auth-for-android')
+	implementation project(':pcloud-sdk-java')
 
 	// cryptomator
 	implementation dependencies.cryptolib

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudApiError.java

@@ -0,0 +1,112 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import java.util.Arrays;
+import java.util.HashSet;
+
+public class PCloudApiError {
+
+	public static final HashSet<Integer> ignoreExistsSet = new HashSet<>( //
+			Arrays.asList( //
+					PCloudApiErrorCodes.COMPONENT_OF_PARENT_DIRECTORY_DOES_NOT_EXIST.getValue(), //
+					PCloudApiErrorCodes.FILE_NOT_FOUND.getValue(), //
+					PCloudApiErrorCodes.FILE_OR_FOLDER_NOT_FOUND.getValue(), //
+					PCloudApiErrorCodes.DIRECTORY_DOES_NOT_EXIST.getValue(), //
+					PCloudApiErrorCodes.INVALID_FILE_OR_FOLDER_NAME.getValue() //
+			));
+	public static final HashSet<Integer> ignoreMoveSet = new HashSet<>( //
+			Arrays.asList( //
+					PCloudApiErrorCodes.FILE_OR_FOLDER_ALREADY_EXISTS.getValue(), //
+					PCloudApiErrorCodes.COMPONENT_OF_PARENT_DIRECTORY_DOES_NOT_EXIST.getValue(), //
+					PCloudApiErrorCodes.FILE_NOT_FOUND.getValue(), //
+					PCloudApiErrorCodes.FILE_OR_FOLDER_NOT_FOUND.getValue(), //
+					PCloudApiErrorCodes.DIRECTORY_DOES_NOT_EXIST.getValue() //
+			) //
+	);
+
+	public static boolean isCloudNodeAlreadyExistsException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.FILE_OR_FOLDER_ALREADY_EXISTS.getValue();
+	}
+
+	public static boolean isFatalBackendException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.INTERNAL_UPLOAD_ERROR.getValue() //
+				|| errorCode == PCloudApiErrorCodes.INTERNAL_UPLOAD_ERROR.getValue() //
+				|| errorCode == PCloudApiErrorCodes.UPLOAD_NOT_FOUND.getValue() //
+				|| errorCode == PCloudApiErrorCodes.TRANSFER_NOT_FOUND.getValue();
+	}
+
+	public static boolean isForbiddenException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.ACCESS_DENIED.getValue();
+	}
+
+	public static boolean isNetworkConnectionException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.CONNECTION_BROKE.getValue();
+	}
+
+	public static boolean isNoSuchCloudFileException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.COMPONENT_OF_PARENT_DIRECTORY_DOES_NOT_EXIST.getValue() //
+				|| errorCode == PCloudApiErrorCodes.FILE_NOT_FOUND.getValue() //
+				|| errorCode == PCloudApiErrorCodes.FILE_OR_FOLDER_NOT_FOUND.getValue() //
+				|| errorCode == PCloudApiErrorCodes.DIRECTORY_DOES_NOT_EXIST.getValue();
+	}
+
+	public static boolean isWrongCredentialsException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.INVALID_ACCESS_TOKEN.getValue() //
+				|| errorCode == PCloudApiErrorCodes.ACCESS_TOKEN_REVOKED.getValue();
+	}
+
+	public static boolean isUnauthorizedException(int errorCode) {
+		return errorCode == PCloudApiErrorCodes.LOGIN_FAILED.getValue() //
+				|| errorCode == PCloudApiErrorCodes.LOGIN_REQUIRED.getValue() //
+				|| errorCode == PCloudApiErrorCodes.TOO_MANY_LOGIN_TRIES_FROM_IP.getValue();
+	}
+
+	public enum PCloudApiErrorCodes {
+		LOGIN_REQUIRED(1000), //
+		NO_FULL_PATH_OR_NAME_FOLDER_ID_PROVIDED(1001), //
+		NO_FULL_PATH_OR_FOLDER_ID_PROVIDED(1002), //
+		NO_FILE_ID_OR_PATH_PROVIDED(1004), //
+		INVALID_DATE_TIME_FORMAT(1013), //
+		NO_DESTINATION_PROVIDED(1016), //
+		INVALID_FOLDER_ID(1017), //
+		INVALID_DESTINATION(1037), //
+		PROVIDE_URL(1040), //
+		UPLOAD_NOT_FOUND(1900), //
+		TRANSFER_NOT_FOUND(1902), //
+		LOGIN_FAILED(2000), //
+		INVALID_FILE_OR_FOLDER_NAME(2001), //
+		COMPONENT_OF_PARENT_DIRECTORY_DOES_NOT_EXIST(2002), //
+		ACCESS_DENIED(2003), //
+		FILE_OR_FOLDER_ALREADY_EXISTS(2004), //
+		DIRECTORY_DOES_NOT_EXIST(2005), //
+		FOLDER_NOT_EMPTY(2006), //
+		CANNOT_DELETE_ROOT_FOLDER(2007), //
+		USER_OVER_QUOTA(2008), //
+		FILE_NOT_FOUND(2009), //
+		INVALID_PATH(2010), //
+		SHARED_FOLDER_IN_SHARED_FOLDER(2023), //
+		ACTIVE_SHARES_OR_SHAREREQUESTS_PRESENT(2028), //
+		CONNECTION_BROKE(2041), //
+		CANNOT_RENAME_ROOT_FOLDER(2042), //
+		CANNOT_MOVE_FOLDER_INTO_SUBFOLDER_OF_ITSELF(2043), //
+		FILE_OR_FOLDER_NOT_FOUND(2055), //
+		NO_FILE_UPLOAD_DETECTED(2088), //
+		INVALID_ACCESS_TOKEN(2094), //
+		ACCESS_TOKEN_REVOKED(2095), //
+		TRANSFER_OVER_QUOTA(2097), //
+		TARGET_FOLDER_DOES_NOT_EXIST(2208), //
+		TOO_MANY_LOGIN_TRIES_FROM_IP(4000), //
+		INTERNAL_ERROR(5000), //
+		INTERNAL_UPLOAD_ERROR(5001);
+
+		private final int value;
+
+		PCloudApiErrorCodes(final int newValue) {
+			value = newValue;
+		}
+
+		public int getValue() {
+			return value;
+		}
+	}
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudClientFactory.java

@@ -0,0 +1,53 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import android.content.Context;
+
+import com.pcloud.sdk.ApiClient;
+import com.pcloud.sdk.Authenticators;
+import com.pcloud.sdk.PCloudSdk;
+
+import org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor;
+import org.cryptomator.util.crypto.CredentialCryptor;
+
+import okhttp3.Interceptor;
+import okhttp3.OkHttpClient;
+import timber.log.Timber;
+
+import static org.cryptomator.data.util.NetworkTimeout.CONNECTION;
+import static org.cryptomator.data.util.NetworkTimeout.READ;
+import static org.cryptomator.data.util.NetworkTimeout.WRITE;
+
+class PCloudClientFactory {
+
+	private ApiClient apiClient;
+
+	private static Interceptor httpLoggingInterceptor(Context context) {
+		return new HttpLoggingInterceptor(message -> Timber.tag("OkHttp").d(message), context);
+	}
+
+	public ApiClient getClient(String accessToken, String url, Context context) {
+		if (apiClient == null) {
+			apiClient = createApiClient(accessToken, url, context);
+		}
+		return apiClient;
+	}
+
+	private ApiClient createApiClient(String accessToken, String url, Context context) {
+		OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient() //
+				.newBuilder() //
+				.connectTimeout(CONNECTION.getTimeout(), CONNECTION.getUnit()) //
+				.readTimeout(READ.getTimeout(), READ.getUnit()) //
+				.writeTimeout(WRITE.getTimeout(), WRITE.getUnit()) //
+				.addInterceptor(httpLoggingInterceptor(context)); //;
+
+		OkHttpClient okHttpClient = okHttpClientBuilder.build();
+
+		return PCloudSdk.newClientBuilder().authenticator(Authenticators.newOAuthAuthenticator(decrypt(accessToken, context))).withClient(okHttpClient).apiHost(url).create();
+	}
+
+	private String decrypt(String password, Context context) {
+		return CredentialCryptor //
+				.getInstance(context) //
+				.decrypt(password);
+	}
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudContentRepository.java

@@ -0,0 +1,193 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import android.content.Context;
+
+import com.pcloud.sdk.ApiError;
+
+import org.cryptomator.data.cloud.InterceptingCloudContentRepository;
+import org.cryptomator.domain.PCloud;
+import org.cryptomator.domain.exception.BackendException;
+import org.cryptomator.domain.exception.FatalBackendException;
+import org.cryptomator.domain.exception.NetworkConnectionException;
+import org.cryptomator.domain.exception.authentication.WrongCredentialsException;
+import org.cryptomator.domain.repository.CloudContentRepository;
+import org.cryptomator.domain.usecases.ProgressAware;
+import org.cryptomator.domain.usecases.cloud.DataSource;
+import org.cryptomator.domain.usecases.cloud.DownloadState;
+import org.cryptomator.domain.usecases.cloud.UploadState;
+import org.cryptomator.util.Optional;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.List;
+
+import static org.cryptomator.util.ExceptionUtil.contains;
+
+class PCloudContentRepository extends InterceptingCloudContentRepository<PCloud, PCloudNode, PCloudFolder, PCloudFile> {
+
+	private final PCloud cloud;
+
+	public PCloudContentRepository(PCloud cloud, Context context) {
+		super(new Intercepted(cloud, context));
+		this.cloud = cloud;
+	}
+
+	@Override
+	protected void throwWrappedIfRequired(Exception e) throws BackendException {
+		throwConnectionErrorIfRequired(e);
+		throwWrongCredentialsExceptionIfRequired(e);
+	}
+
+	private void throwConnectionErrorIfRequired(Exception e) throws NetworkConnectionException {
+		if (contains(e, IOException.class)) {
+			throw new NetworkConnectionException(e);
+		}
+	}
+
+	private void throwWrongCredentialsExceptionIfRequired(Exception e) {
+		if (e instanceof ApiError) {
+			int errorCode = ((ApiError) e).errorCode();
+			if (errorCode == PCloudApiError.PCloudApiErrorCodes.INVALID_ACCESS_TOKEN.getValue() //
+					|| errorCode == PCloudApiError.PCloudApiErrorCodes.ACCESS_TOKEN_REVOKED.getValue()) {
+				throw new WrongCredentialsException(cloud);
+			}
+		}
+	}
+
+	private static class Intercepted implements CloudContentRepository<PCloud, PCloudNode, PCloudFolder, PCloudFile> {
+
+		private final PCloudImpl cloud;
+
+		public Intercepted(PCloud cloud, Context context) {
+			this.cloud = new PCloudImpl(context, cloud);
+		}
+
+		public PCloudFolder root(PCloud cloud) {
+			return this.cloud.root();
+		}
+
+		@Override
+		public PCloudFolder resolve(PCloud cloud, String path) throws BackendException {
+			try {
+				return this.cloud.resolve(path);
+			} catch (IOException ex) {
+				throw new FatalBackendException(ex);
+			}
+		}
+
+		@Override
+		public PCloudFile file(PCloudFolder parent, String name) throws BackendException {
+			try {
+				return cloud.file(parent, name);
+			} catch (IOException ex) {
+				throw new FatalBackendException(ex);
+			}
+		}
+
+		@Override
+		public PCloudFile file(PCloudFolder parent, String name, Optional<Long> size) throws BackendException {
+			try {
+				return cloud.file(parent, name, size);
+			} catch (IOException ex) {
+				throw new FatalBackendException(ex);
+			}
+		}
+
+		@Override
+		public PCloudFolder folder(PCloudFolder parent, String name) throws BackendException {
+			try {
+				return cloud.folder(parent, name);
+			} catch (IOException ex) {
+				throw new FatalBackendException(ex);
+			}
+		}
+
+		@Override
+		public boolean exists(PCloudNode node) throws BackendException {
+			try {
+				return cloud.exists(node);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public List<PCloudNode> list(PCloudFolder folder) throws BackendException {
+			try {
+				return cloud.list(folder);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public PCloudFolder create(PCloudFolder folder) throws BackendException {
+			try {
+				return cloud.create(folder);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public PCloudFolder move(PCloudFolder source, PCloudFolder target) throws BackendException {
+			try {
+				return (PCloudFolder) cloud.move(source, target);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public PCloudFile move(PCloudFile source, PCloudFile target) throws BackendException {
+			try {
+				return (PCloudFile) cloud.move(source, target);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public PCloudFile write(PCloudFile uploadFile, DataSource data, ProgressAware<UploadState> progressAware, boolean replace, long size) throws BackendException {
+			try {
+				return cloud.write(uploadFile, data, progressAware, replace, size);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public void read(PCloudFile file, Optional<File> encryptedTmpFile, OutputStream data, ProgressAware<DownloadState> progressAware) throws BackendException {
+			try {
+				cloud.read(file, encryptedTmpFile, data, progressAware);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public void delete(PCloudNode node) throws BackendException {
+			try {
+				cloud.delete(node);
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public String checkAuthenticationAndRetrieveCurrentAccount(PCloud cloud) throws BackendException {
+			try {
+				return this.cloud.currentAccount();
+			} catch (IOException e) {
+				throw new FatalBackendException(e);
+			}
+		}
+
+		@Override
+		public void logout(PCloud cloud) throws BackendException {
+			// empty
+		}
+	}
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudContentRepositoryFactory.java

@@ -0,0 +1,35 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import android.content.Context;
+
+import org.cryptomator.data.repository.CloudContentRepositoryFactory;
+import org.cryptomator.domain.Cloud;
+import org.cryptomator.domain.PCloud;
+import org.cryptomator.domain.repository.CloudContentRepository;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import static org.cryptomator.domain.CloudType.PCLOUD;
+
+@Singleton
+public class PCloudContentRepositoryFactory implements CloudContentRepositoryFactory {
+
+	private final Context context;
+
+	@Inject
+	public PCloudContentRepositoryFactory(Context context) {
+		this.context = context;
+	}
+
+	@Override
+	public boolean supports(Cloud cloud) {
+		return cloud.type() == PCLOUD;
+	}
+
+	@Override
+	public CloudContentRepository cloudContentRepositoryFor(Cloud cloud) {
+		return new PCloudContentRepository((PCloud) cloud, context);
+	}
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudFile.java

@@ -0,0 +1,55 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import org.cryptomator.domain.Cloud;
+import org.cryptomator.domain.CloudFile;
+import org.cryptomator.util.Optional;
+
+import java.util.Date;
+
+class PCloudFile implements CloudFile, PCloudNode {
+
+	private final PCloudFolder parent;
+	private final String name;
+	private final String path;
+	private final Optional<Long> size;
+	private final Optional<Date> modified;
+
+	public PCloudFile(PCloudFolder parent, String name, String path, Optional<Long> size, Optional<Date> modified) {
+		this.parent = parent;
+		this.name = name;
+		this.path = path;
+		this.size = size;
+		this.modified = modified;
+	}
+
+	@Override
+	public Cloud getCloud() {
+		return parent.getCloud();
+	}
+
+	@Override
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public String getPath() {
+		return path;
+	}
+
+	@Override
+	public PCloudFolder getParent() {
+		return parent;
+	}
+
+	@Override
+	public Optional<Long> getSize() {
+		return size;
+	}
+
+	@Override
+	public Optional<Date> getModified() {
+		return modified;
+	}
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudFolder.java

@@ -0,0 +1,42 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import org.cryptomator.domain.Cloud;
+import org.cryptomator.domain.CloudFolder;
+
+class PCloudFolder implements CloudFolder, PCloudNode {
+
+	private final PCloudFolder parent;
+	private final String name;
+	private final String path;
+
+	public PCloudFolder(PCloudFolder parent, String name, String path) {
+		this.parent = parent;
+		this.name = name;
+		this.path = path;
+	}
+
+	@Override
+	public Cloud getCloud() {
+		return parent.getCloud();
+	}
+
+	@Override
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public String getPath() {
+		return path;
+	}
+
+	@Override
+	public PCloudFolder getParent() {
+		return parent;
+	}
+
+	@Override
+	public PCloudFolder withCloud(Cloud cloud) {
+		return new PCloudFolder(parent.withCloud(cloud), name, path);
+	}
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudImpl.java

@@ -0,0 +1,370 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import android.content.Context;
+
+import com.pcloud.sdk.ApiClient;
+import com.pcloud.sdk.ApiError;
+import com.pcloud.sdk.DataSink;
+import com.pcloud.sdk.DownloadOptions;
+import com.pcloud.sdk.FileLink;
+import com.pcloud.sdk.ProgressListener;
+import com.pcloud.sdk.RemoteEntry;
+import com.pcloud.sdk.RemoteFile;
+import com.pcloud.sdk.RemoteFolder;
+import com.pcloud.sdk.UploadOptions;
+import com.pcloud.sdk.UserInfo;
+import com.tomclaw.cache.DiskLruCache;
+
+import org.cryptomator.data.util.CopyStream;
+import org.cryptomator.domain.PCloud;
+import org.cryptomator.domain.exception.BackendException;
+import org.cryptomator.domain.exception.CloudNodeAlreadyExistsException;
+import org.cryptomator.domain.exception.FatalBackendException;
+import org.cryptomator.domain.exception.ForbiddenException;
+import org.cryptomator.domain.exception.NetworkConnectionException;
+import org.cryptomator.domain.exception.NoSuchCloudFileException;
+import org.cryptomator.domain.exception.UnauthorizedException;
+import org.cryptomator.domain.exception.authentication.NoAuthenticationProvidedException;
+import org.cryptomator.domain.exception.authentication.WrongCredentialsException;
+import org.cryptomator.domain.usecases.ProgressAware;
+import org.cryptomator.domain.usecases.cloud.DataSource;
+import org.cryptomator.domain.usecases.cloud.DownloadState;
+import org.cryptomator.domain.usecases.cloud.Progress;
+import org.cryptomator.domain.usecases.cloud.UploadState;
+import org.cryptomator.util.Optional;
+import org.cryptomator.util.SharedPreferencesHandler;
+import org.cryptomator.util.file.LruFileCacheUtil;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Set;
+
+import okio.BufferedSink;
+import okio.BufferedSource;
+import okio.Okio;
+import okio.Source;
+import timber.log.Timber;
+
+import static org.cryptomator.domain.usecases.cloud.Progress.progress;
+import static org.cryptomator.util.file.LruFileCacheUtil.Cache.PCLOUD;
+import static org.cryptomator.util.file.LruFileCacheUtil.retrieveFromLruCache;
+import static org.cryptomator.util.file.LruFileCacheUtil.storeToLruCache;
+
+class PCloudImpl {
+
+	private final PCloudClientFactory clientFactory = new PCloudClientFactory();
+	private final PCloud cloud;
+	private final RootPCloudFolder root;
+	private final Context context;
+
+	private final SharedPreferencesHandler sharedPreferencesHandler;
+	private DiskLruCache diskLruCache;
+
+	PCloudImpl(Context context, PCloud cloud) {
+		if (cloud.accessToken() == null) {
+			throw new NoAuthenticationProvidedException(cloud);
+		}
+
+		this.context = context;
+		this.cloud = cloud;
+		this.root = new RootPCloudFolder(cloud);
+		this.sharedPreferencesHandler = new SharedPreferencesHandler(context);
+	}
+
+	private ApiClient client() {
+		return clientFactory.getClient(cloud.accessToken(), cloud.url(), context);
+	}
+
+	public PCloudFolder root() {
+		return root;
+	}
+
+	public PCloudFolder resolve(String path) throws IOException, BackendException {
+		if (path.startsWith("/")) {
+			path = path.substring(1);
+		}
+		String[] names = path.split("/");
+		PCloudFolder folder = root;
+		for (String name : names) {
+			folder = folder(folder, name);
+		}
+		return folder;
+	}
+
+	public PCloudFile file(PCloudFolder parent, String name) throws BackendException, IOException {
+		return file(parent, name, Optional.empty());
+	}
+
+	public PCloudFile file(PCloudFolder parent, String name, Optional<Long> size) throws BackendException, IOException {
+		return PCloudNodeFactory.file(parent, name, size, parent.getPath() + "/" + name);
+	}
+
+	public PCloudFolder folder(PCloudFolder parent, String name) throws IOException, BackendException {
+		return PCloudNodeFactory.folder(parent, name, parent.getPath() + "/" + name);
+	}
+
+	public boolean exists(PCloudNode node) throws IOException, BackendException {
+		try {
+			if (node instanceof PCloudFolder) {
+				client().loadFolder(node.getPath()).execute();
+			} else {
+				client().loadFile(node.getPath()).execute();
+			}
+			return true;
+		} catch (ApiError ex) {
+			handleApiError(ex, PCloudApiError.ignoreExistsSet, node.getName());
+			return false;
+		}
+	}
+
+	public List<PCloudNode> list(PCloudFolder folder) throws IOException, BackendException {
+		List<PCloudNode> result = new ArrayList<>();
+
+		try {
+			RemoteFolder listFolderResult = client().listFolder(folder.getPath()).execute();
+			List<RemoteEntry> entryMetadata = listFolderResult.children();
+			for (RemoteEntry metadata : entryMetadata) {
+				result.add(PCloudNodeFactory.from(folder, metadata));
+			}
+			return result;
+		} catch (ApiError ex) {
+			handleApiError(ex, folder.getName());
+			throw new FatalBackendException(ex);
+		}
+	}
+
+	public PCloudFolder create(PCloudFolder folder) throws IOException, BackendException {
+		if (!exists(folder.getParent())) {
+			folder = new PCloudFolder( //
+					create(folder.getParent()), //
+					folder.getName(), folder.getPath() //
+			);
+		}
+
+		try {
+			RemoteFolder createdFolder = client() //
+					.createFolder(folder.getPath()) //
+					.execute();
+			return PCloudNodeFactory.folder(folder.getParent(), createdFolder);
+		} catch (ApiError ex) {
+			handleApiError(ex, folder.getName());
+			throw new FatalBackendException(ex);
+		}
+	}
+
+	public PCloudNode move(PCloudNode source, PCloudNode target) throws IOException, BackendException {
+		if (exists(target)) {
+			throw new CloudNodeAlreadyExistsException(target.getName());
+		}
+
+		try {
+			if (source instanceof PCloudFolder) {
+				return PCloudNodeFactory.from(target.getParent(), client().moveFolder(source.getPath(), target.getPath()).execute());
+			} else {
+				return PCloudNodeFactory.from(target.getParent(), client().moveFile(source.getPath(), target.getPath()).execute());
+			}
+		} catch (ApiError ex) {
+			if (PCloudApiError.isCloudNodeAlreadyExistsException(ex.errorCode())) {
+				throw new CloudNodeAlreadyExistsException(target.getName());
+			} else if (PCloudApiError.isNoSuchCloudFileException(ex.errorCode())) {
+				throw new NoSuchCloudFileException(source.getName());
+			} else {
+				handleApiError(ex, PCloudApiError.ignoreMoveSet, null);
+			}
+			throw new FatalBackendException(ex);
+		}
+	}
+
+	public PCloudFile write(PCloudFile file, DataSource data, final ProgressAware<UploadState> progressAware, boolean replace, long size) throws IOException, BackendException {
+		if (!replace && exists(file)) {
+			throw new CloudNodeAlreadyExistsException("CloudNode already exists and replace is false");
+		}
+
+		progressAware.onProgress(Progress.started(UploadState.upload(file)));
+		UploadOptions uploadOptions = UploadOptions.DEFAULT;
+		if (replace) {
+			uploadOptions = UploadOptions.OVERRIDE_FILE;
+		}
+
+		RemoteFile uploadedFile = uploadFile(file, data, progressAware, uploadOptions, size);
+
+		progressAware.onProgress(Progress.completed(UploadState.upload(file)));
+
+		return PCloudNodeFactory.file(file.getParent(), uploadedFile);
+
+	}
+
+	private RemoteFile uploadFile(final PCloudFile file, DataSource data, final ProgressAware<UploadState> progressAware, UploadOptions uploadOptions, final long size) //
+			throws IOException, BackendException {
+		ProgressListener listener = (done, total) -> progressAware.onProgress( //
+				progress(UploadState.upload(file)) //
+						.between(0) //
+						.and(size) //
+						.withValue(done));
+
+		com.pcloud.sdk.DataSource pCloudDataSource = new com.pcloud.sdk.DataSource() {
+			@Override
+			public long contentLength() {
+				return data.size(context).get();
+			}
+
+			@Override
+			public void writeTo(BufferedSink sink) throws IOException {
+				try (Source source = Okio.source(data.open(context))) {
+					sink.writeAll(source);
+				}
+			}
+		};
+
+		try {
+			return client() //
+					.createFile(file.getParent().getPath(), file.getName(), pCloudDataSource, new Date(), listener, uploadOptions) //
+					.execute();
+		} catch (ApiError ex) {
+			handleApiError(ex, file.getName());
+			throw new FatalBackendException(ex);
+		}
+	}
+
+	public void read(PCloudFile file, Optional<File> encryptedTmpFile, OutputStream data, final ProgressAware<DownloadState> progressAware) throws IOException, BackendException {
+		progressAware.onProgress(Progress.started(DownloadState.download(file)));
+
+		Optional<String> cacheKey = Optional.empty();
+		Optional<File> cacheFile = Optional.empty();
+
+		RemoteFile remoteFile;
+
+		if (sharedPreferencesHandler.useLruCache() && createLruCache(sharedPreferencesHandler.lruCacheSize())) {
+			try {
+				remoteFile = client().loadFile(file.getPath()).execute().asFile();
+				cacheKey = Optional.of(remoteFile.fileId() + remoteFile.hash());
+			} catch (ApiError ex) {
+				handleApiError(ex, file.getName());
+			}
+
+			File cachedFile = diskLruCache.get(cacheKey.get());
+			cacheFile = cachedFile != null ? Optional.of(cachedFile) : Optional.empty();
+		}
+
+		if (sharedPreferencesHandler.useLruCache() && cacheFile.isPresent()) {
+			try {
+				retrieveFromLruCache(cacheFile.get(), data);
+			} catch (IOException e) {
+				Timber.tag("PCloudImpl").w(e, "Error while retrieving content from Cache, get from web request");
+				writeToData(file, data, encryptedTmpFile, cacheKey, progressAware);
+			}
+		} else {
+			writeToData(file, data, encryptedTmpFile, cacheKey, progressAware);
+		}
+
+		progressAware.onProgress(Progress.completed(DownloadState.download(file)));
+	}
+
+	private void writeToData(final PCloudFile file, //
+			final OutputStream data, //
+			final Optional<File> encryptedTmpFile, //
+			final Optional<String> cacheKey, //
+			final ProgressAware<DownloadState> progressAware) throws IOException, BackendException {
+		try {
+			FileLink fileLink = client().createFileLink(file.getPath(), DownloadOptions.DEFAULT).execute();
+
+			ProgressListener listener = (done, total) -> progressAware.onProgress( //
+					progress(DownloadState.download(file)) //
+							.between(0) //
+							.and(file.getSize().orElse(Long.MAX_VALUE)) //
+							.withValue(done));
+
+			DataSink sink = new DataSink() {
+				@Override
+				public void readAll(BufferedSource source) {
+					CopyStream.copyStreamToStream(source.inputStream(), data);
+				}
+			};
+
+			client().download(fileLink, sink, listener).execute();
+		} catch (ApiError ex) {
+			handleApiError(ex, file.getName());
+		}
+
+		if (sharedPreferencesHandler.useLruCache() && encryptedTmpFile.isPresent() && cacheKey.isPresent()) {
+			try {
+				storeToLruCache(diskLruCache, cacheKey.get(), encryptedTmpFile.get());
+			} catch (IOException e) {
+				Timber.tag("PCloudImpl").e(e, "Failed to write downloaded file in LRU cache");
+			}
+		}
+
+	}
+
+	public void delete(PCloudNode node) throws IOException, BackendException {
+		try {
+			if (node instanceof PCloudFolder) {
+				client() //
+						.deleteFolder(node.getPath(), true).execute();
+			} else {
+				client() //
+						.deleteFile(node.getPath()).execute();
+			}
+		} catch (ApiError ex) {
+			handleApiError(ex, node.getName());
+		}
+	}
+
+	public String currentAccount() throws IOException, BackendException {
+		try {
+			UserInfo currentAccount = client() //
+					.getUserInfo() //
+					.execute();
+			return currentAccount.email();
+		} catch (ApiError ex) {
+			handleApiError(ex);
+			throw new FatalBackendException(ex);
+		}
+	}
+
+	private boolean createLruCache(int cacheSize) {
+		if (diskLruCache == null) {
+			try {
+				diskLruCache = DiskLruCache.create(new LruFileCacheUtil(context).resolve(PCLOUD), cacheSize);
+			} catch (IOException e) {
+				Timber.tag("PCloudImpl").e(e, "Failed to setup LRU cache");
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	private void handleApiError(ApiError ex) throws BackendException {
+		handleApiError(ex, null, null);
+	}
+
+	private void handleApiError(ApiError ex, String name) throws BackendException {
+		handleApiError(ex, null, name);
+	}
+
+	private void handleApiError(ApiError ex, Set<Integer> errorCodes, String name) throws BackendException {
+		if (errorCodes == null || !errorCodes.contains(ex.errorCode())) {
+			int errorCode = ex.errorCode();
+			if (PCloudApiError.isCloudNodeAlreadyExistsException(errorCode)) {
+				throw new CloudNodeAlreadyExistsException(name);
+			} else if (PCloudApiError.isForbiddenException(errorCode)) {
+				throw new ForbiddenException();
+			} else if (PCloudApiError.isNetworkConnectionException(errorCode)) {
+				throw new NetworkConnectionException(ex);
+			} else if (PCloudApiError.isNoSuchCloudFileException(errorCode)) {
+				throw new NoSuchCloudFileException(name);
+			} else if (PCloudApiError.isWrongCredentialsException(errorCode)) {
+				throw new WrongCredentialsException(cloud);
+			} else if (PCloudApiError.isUnauthorizedException(errorCode)) {
+				throw new UnauthorizedException();
+			} else {
+				throw new FatalBackendException(ex);
+			}
+		}
+	}
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudNode.java

@@ -0,0 +1,10 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import org.cryptomator.domain.CloudNode;
+
+interface PCloudNode extends CloudNode {
+
+	@Override
+	PCloudFolder getParent();
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/PCloudNodeFactory.java

@@ -0,0 +1,47 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import com.pcloud.sdk.RemoteEntry;
+import com.pcloud.sdk.RemoteFile;
+import com.pcloud.sdk.RemoteFolder;
+
+import org.cryptomator.util.Optional;
+
+class PCloudNodeFactory {
+
+	public static PCloudFile file(PCloudFolder parent, RemoteFile file) {
+		return new PCloudFile(parent, file.name(), getNodePath(parent, file.name()), Optional.ofNullable(file.size()), Optional.ofNullable(file.lastModified()));
+	}
+
+	public static PCloudFile file(PCloudFolder parent, String name, Optional<Long> size) {
+		return new PCloudFile(parent, name, getNodePath(parent, name), size, Optional.empty());
+	}
+
+	public static PCloudFile file(PCloudFolder folder, String name, Optional<Long> size, String path) {
+		return new PCloudFile(folder, name, path, size, Optional.empty());
+	}
+
+	public static PCloudFolder folder(PCloudFolder parent, RemoteFolder folder) {
+		return new PCloudFolder(parent, folder.name(), getNodePath(parent, folder.name()));
+	}
+
+	public static PCloudFolder folder(PCloudFolder parent, String name) {
+		return new PCloudFolder(parent, name, getNodePath(parent, name));
+	}
+
+	public static PCloudFolder folder(PCloudFolder parent, String name, String path) {
+		return new PCloudFolder(parent, name, path);
+	}
+
+	public static String getNodePath(PCloudFolder parent, String name) {
+		return parent.getPath() + "/" + name;
+	}
+
+	public static PCloudNode from(PCloudFolder parent, RemoteEntry remoteEntry) {
+		if (remoteEntry instanceof RemoteFile) {
+			return file(parent, remoteEntry.asFile());
+		} else {
+			return folder(parent, remoteEntry.asFolder());
+		}
+	}
+
+}

data/src/main/java/org/cryptomator/data/cloud/pcloud/RootPCloudFolder.java

@@ -0,0 +1,24 @@
+package org.cryptomator.data.cloud.pcloud;
+
+import org.cryptomator.domain.Cloud;
+import org.cryptomator.domain.PCloud;
+
+class RootPCloudFolder extends PCloudFolder {
+
+	private final PCloud cloud;
+
+	public RootPCloudFolder(PCloud cloud) {
+		super(null, "", "");
+		this.cloud = cloud;
+	}
+
+	@Override
+	public PCloud getCloud() {
+		return cloud;
+	}
+
+	@Override
+	public PCloudFolder withCloud(Cloud cloud) {
+		return new RootPCloudFolder((PCloud) cloud);
+	}
+}

data/src/main/java/org/cryptomator/data/db/DatabaseUpgrades.java

@@ -22,13 +22,15 @@ class DatabaseUpgrades {
 			Upgrade0To1 upgrade0To1, //
 			Upgrade1To2 upgrade1To2, //
 			Upgrade2To3 upgrade2To3, //
-			Upgrade3To4 upgrade3To4) {
+			Upgrade3To4 upgrade3To4, //
+			Upgrade4To5 upgrade4To5) {
 
 		availableUpgrades = defineUpgrades( //
 				upgrade0To1, //
 				upgrade1To2, //
 				upgrade2To3, //
-				upgrade3To4);
+				upgrade3To4, //
+				upgrade4To5);
 	}
 
 	private static Comparator<DatabaseUpgrade> reverseOrder() {

data/src/main/java/org/cryptomator/data/db/Sql.java

@@ -1,6 +1,7 @@
 package org.cryptomator.data.db;
 
 import android.content.ContentValues;
+import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 
 import org.greenrobot.greendao.database.Database;
@@ -49,6 +50,10 @@ class Sql {
 		return new SqlUpdateBuilder(tableName);
 	}
 
+	public static SqlQueryBuilder query(String table) {
+		return new SqlQueryBuilder(table);
+	}
+
 	public static Criterion eq(final String value) {
 		return (column, whereClause, whereArgs) -> {
 			whereClause.append('"').append(column).append("\" = ?");
@@ -91,6 +96,56 @@ class Sql {
 		void appendTo(String column, StringBuilder whereClause, List<String> whereArgs);
 	}
 
+	public static class SqlQueryBuilder {
+
+		private final String tableName;
+		private final StringBuilder whereClause = new StringBuilder();
+		private final List<String> whereArgs = new ArrayList<>();
+
+		private List<String> columns = new ArrayList<>();
+		private String groupBy;
+		private String having;
+		private String limit;
+
+		public SqlQueryBuilder(String tableName) {
+			this.tableName = tableName;
+		}
+
+		public SqlQueryBuilder columns(List<String> columns) {
+			this.columns = columns;
+			return this;
+		}
+
+		public SqlQueryBuilder where(String column, Criterion criterion) {
+			if (whereClause.length() > 0) {
+				whereClause.append(" AND ");
+			}
+			criterion.appendTo(column, whereClause, whereArgs);
+			return this;
+		}
+
+		public SqlQueryBuilder groupBy(String groupBy) {
+			this.groupBy = groupBy;
+			return this;
+		}
+
+		public SqlQueryBuilder having(String having) {
+			this.having = having;
+			return this;
+		}
+
+		public SqlQueryBuilder limit(String limit) {
+			this.limit = limit;
+			return this;
+		}
+
+		public Cursor executeOn(Database wrapped) {
+			SQLiteDatabase db = unwrap(wrapped);
+			return db.query(tableName, columns.toArray(new String[columns.size()]), whereClause.toString(), whereArgs.toArray(new String[whereArgs.size()]), groupBy, having, limit);
+		}
+
+	}
+
 	public static class SqlUpdateBuilder {
 
 		private final String tableName;

data/src/main/java/org/cryptomator/data/db/Upgrade2To3.kt

@@ -2,10 +2,8 @@ package org.cryptomator.data.db
 
 import android.content.Context
 import android.content.SharedPreferences
-import org.cryptomator.data.db.entities.CloudEntityDao
 import org.cryptomator.util.crypto.CredentialCryptor
 import org.greenrobot.greendao.database.Database
-import org.greenrobot.greendao.internal.DaoConfig
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -13,16 +11,23 @@ import javax.inject.Singleton
 internal class Upgrade2To3 @Inject constructor(private val context: Context) : DatabaseUpgrade(2, 3) {
 
 	override fun internalApplyTo(db: Database, origin: Int) {
-		val clouds = CloudEntityDao(DaoConfig(db, CloudEntityDao::class.java)).loadAll()
 		db.beginTransaction()
 		try {
-			clouds.filter { cloud -> cloud.type == "DROPBOX" || cloud.type == "ONEDRIVE" } //
-					.map {
-						Sql.update("CLOUD_ENTITY") //
-								.where("TYPE", Sql.eq(it.type)) //
-								.set("ACCESS_TOKEN", Sql.toString(encrypt(if (it.type == "DROPBOX") it.accessToken else onedriveToken()))) //
-								.executeOn(db)
+			Sql.query("CLOUD_ENTITY")
+					.columns(listOf("ACCESS_TOKEN"))
+					.where("TYPE", Sql.eq("DROPBOX"))
+					.executeOn(db).use {
+						if (it.moveToFirst()) {
+							Sql.update("CLOUD_ENTITY")
+									.set("ACCESS_TOKEN", Sql.toString(encrypt(it.getString(it.getColumnIndex("ACCESS_TOKEN")))))
+									.where("TYPE", Sql.eq("DROPBOX"));
+						}
 					}
+
+			Sql.update("CLOUD_ENTITY")
+					.set("ACCESS_TOKEN", Sql.toString(encrypt(onedriveToken())))
+					.where("TYPE", Sql.eq("ONEDRIVE"));
+
 			db.setTransactionSuccessful()
 		} finally {
 			db.endTransaction()

data/src/main/java/org/cryptomator/data/db/Upgrade4To5.kt

@@ -0,0 +1,73 @@
+package org.cryptomator.data.db
+
+import org.greenrobot.greendao.database.Database
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+internal class Upgrade4To5 @Inject constructor() : DatabaseUpgrade(4, 5) {
+
+	override fun internalApplyTo(db: Database, origin: Int) {
+		db.beginTransaction()
+		try {
+			changeWebdavUrlInCloudEntityToUrl(db)
+			db.setTransactionSuccessful()
+		} finally {
+			db.endTransaction()
+		}
+	}
+
+	private fun changeWebdavUrlInCloudEntityToUrl(db: Database) {
+		Sql.alterTable("CLOUD_ENTITY").renameTo("CLOUD_ENTITY_OLD").executeOn(db)
+
+		Sql.createTable("CLOUD_ENTITY") //
+				.id() //
+				.requiredText("TYPE") //
+				.optionalText("ACCESS_TOKEN") //
+				.optionalText("URL") //
+				.optionalText("USERNAME") //
+				.optionalText("WEBDAV_CERTIFICATE") //
+				.executeOn(db);
+
+		Sql.insertInto("CLOUD_ENTITY") //
+				.select("_id", "TYPE", "ACCESS_TOKEN", "WEBDAV_URL", "USERNAME", "WEBDAV_CERTIFICATE") //
+				.columns("_id", "TYPE", "ACCESS_TOKEN", "URL", "USERNAME", "WEBDAV_CERTIFICATE") //
+				.from("CLOUD_ENTITY_OLD") //
+				.executeOn(db)
+
+		recreateVaultEntity(db)
+
+		Sql.dropTable("CLOUD_ENTITY_OLD").executeOn(db)
+	}
+
+	private fun recreateVaultEntity(db: Database) {
+		Sql.alterTable("VAULT_ENTITY").renameTo("VAULT_ENTITY_OLD").executeOn(db)
+		Sql.createTable("VAULT_ENTITY") //
+				.id() //
+				.optionalInt("FOLDER_CLOUD_ID") //
+				.optionalText("FOLDER_PATH") //
+				.optionalText("FOLDER_NAME") //
+				.requiredText("CLOUD_TYPE") //
+				.optionalText("PASSWORD") //
+				.optionalInt("POSITION") //
+				.foreignKey("FOLDER_CLOUD_ID", "CLOUD_ENTITY", Sql.SqlCreateTableBuilder.ForeignKeyBehaviour.ON_DELETE_SET_NULL) //
+				.executeOn(db)
+
+		Sql.insertInto("VAULT_ENTITY") //
+				.select("_id", "FOLDER_CLOUD_ID", "FOLDER_PATH", "FOLDER_NAME", "PASSWORD", "POSITION", "CLOUD_ENTITY.TYPE") //
+				.columns("_id", "FOLDER_CLOUD_ID", "FOLDER_PATH", "FOLDER_NAME", "PASSWORD", "POSITION", "CLOUD_TYPE") //
+				.from("VAULT_ENTITY_OLD") //
+				.join("CLOUD_ENTITY", "VAULT_ENTITY_OLD.FOLDER_CLOUD_ID") //
+				.executeOn(db)
+
+		Sql.dropIndex("IDX_VAULT_ENTITY_FOLDER_PATH_FOLDER_CLOUD_ID").executeOn(db)
+
+		Sql.createUniqueIndex("IDX_VAULT_ENTITY_FOLDER_PATH_FOLDER_CLOUD_ID") //
+				.on("VAULT_ENTITY") //
+				.asc("FOLDER_PATH") //
+				.asc("FOLDER_CLOUD_ID") //
+				.executeOn(db)
+
+		Sql.dropTable("VAULT_ENTITY_OLD").executeOn(db)
+	}
+}

data/src/main/java/org/cryptomator/data/db/entities/CloudEntity.java

@@ -16,18 +16,18 @@ public class CloudEntity extends DatabaseEntity {
 
 	private String accessToken;
 
-	private String webdavUrl;
+	private String url;
 
 	private String username;
 
 	private String webdavCertificate;
 
-	@Generated(hash = 2078985174)
-	public CloudEntity(Long id, @NotNull String type, String accessToken, String webdavUrl, String username, String webdavCertificate) {
+	@Generated(hash = 361171073)
+	public CloudEntity(Long id, @NotNull String type, String accessToken, String url, String username, String webdavCertificate) {
 		this.id = id;
 		this.type = type;
 		this.accessToken = accessToken;
-		this.webdavUrl = webdavUrl;
+		this.url = url;
 		this.username = username;
 		this.webdavCertificate = webdavCertificate;
 	}
@@ -60,12 +60,12 @@ public class CloudEntity extends DatabaseEntity {
 		this.id = id;
 	}
 
-	public String getWebdavUrl() {
-		return webdavUrl;
+	public String getUrl() {
+		return url;
 	}
 
-	public void setWebdavUrl(String webdavUrl) {
-		this.webdavUrl = webdavUrl;
+	public void setUrl(String url) {
+		this.url = url;
 	}
 
 	public String getUsername() {

data/src/main/java/org/cryptomator/data/db/entities/VaultEntity.java

@@ -182,7 +182,9 @@ public class VaultEntity extends DatabaseEntity {
 		this.position = position;
 	}
 
-	/** called by internal mechanisms, do not call yourself. */
+	/**
+	 * called by internal mechanisms, do not call yourself.
+	 */
 	@Generated(hash = 674742652)
 	public void __setDaoSession(DaoSession daoSession) {
 		this.daoSession = daoSession;

data/src/main/java/org/cryptomator/data/db/mappers/CloudEntityMapper.java

@@ -7,6 +7,7 @@ import org.cryptomator.domain.DropboxCloud;
 import org.cryptomator.domain.GoogleDriveCloud;
 import org.cryptomator.domain.LocalStorageCloud;
 import org.cryptomator.domain.OnedriveCloud;
+import org.cryptomator.domain.PCloud;
 import org.cryptomator.domain.WebDavCloud;
 
 import javax.inject.Inject;
@@ -16,6 +17,7 @@ import static org.cryptomator.domain.DropboxCloud.aDropboxCloud;
 import static org.cryptomator.domain.GoogleDriveCloud.aGoogleDriveCloud;
 import static org.cryptomator.domain.LocalStorageCloud.aLocalStorage;
 import static org.cryptomator.domain.OnedriveCloud.aOnedriveCloud;
+import static org.cryptomator.domain.PCloud.aPCloud;
 import static org.cryptomator.domain.WebDavCloud.aWebDavCloudCloud;
 
 @Singleton
@@ -47,6 +49,13 @@ public class CloudEntityMapper extends EntityMapper<CloudEntity, Cloud> {
 						.withAccessToken(entity.getAccessToken()) //
 						.withUsername(entity.getUsername()) //
 						.build();
+			case PCLOUD:
+				return aPCloud() //
+						.withId(entity.getId()) //
+						.withUrl(entity.getUrl()) //
+						.withAccessToken(entity.getAccessToken()) //
+						.withUsername(entity.getUsername()) //
+						.build();
 			case LOCAL:
 				return aLocalStorage() //
 						.withId(entity.getId()) //
@@ -54,7 +63,7 @@ public class CloudEntityMapper extends EntityMapper<CloudEntity, Cloud> {
 			case WEBDAV:
 				return aWebDavCloudCloud() //
 						.withId(entity.getId()) //
-						.withUrl(entity.getWebdavUrl()) //
+						.withUrl(entity.getUrl()) //
 						.withUsername(entity.getUsername()) //
 						.withPassword(entity.getAccessToken()) //
 						.withCertificate(entity.getWebdavCertificate()) //
@@ -82,12 +91,17 @@ public class CloudEntityMapper extends EntityMapper<CloudEntity, Cloud> {
 				result.setAccessToken(((OnedriveCloud) domainObject).accessToken());
 				result.setUsername(((OnedriveCloud) domainObject).username());
 				break;
+			case PCLOUD:
+				result.setAccessToken(((PCloud) domainObject).accessToken());
+				result.setUrl(((PCloud) domainObject).url());
+				result.setUsername(((PCloud) domainObject).username());
+				break;
 			case LOCAL:
 				result.setAccessToken(((LocalStorageCloud) domainObject).rootUri());
 				break;
 			case WEBDAV:
 				result.setAccessToken(((WebDavCloud) domainObject).password());
-				result.setWebdavUrl(((WebDavCloud) domainObject).url());
+				result.setUrl(((WebDavCloud) domainObject).url());
 				result.setUsername(((WebDavCloud) domainObject).username());
 				result.setWebdavCertificate(((WebDavCloud) domainObject).certificate());
 				break;

data/src/notFoss/java/org/cryptomator/data/cloud/CloudContentRepositoryFactories.java

@@ -5,6 +5,7 @@ import org.cryptomator.data.cloud.dropbox.DropboxCloudContentRepositoryFactory;
 import org.cryptomator.data.cloud.googledrive.GoogleDriveCloudContentRepositoryFactory;
 import org.cryptomator.data.cloud.local.LocalStorageContentRepositoryFactory;
 import org.cryptomator.data.cloud.onedrive.OnedriveCloudContentRepositoryFactory;
+import org.cryptomator.data.cloud.pcloud.PCloudContentRepositoryFactory;
 import org.cryptomator.data.cloud.webdav.WebDavCloudContentRepositoryFactory;
 import org.cryptomator.data.repository.CloudContentRepositoryFactory;
 import org.jetbrains.annotations.NotNull;
@@ -25,6 +26,7 @@ public class CloudContentRepositoryFactories implements Iterable<CloudContentRep
 	public CloudContentRepositoryFactories(DropboxCloudContentRepositoryFactory dropboxFactory, //
 			GoogleDriveCloudContentRepositoryFactory googleDriveFactory, //
 			OnedriveCloudContentRepositoryFactory oneDriveFactory, //
+			PCloudContentRepositoryFactory pCloudFactory, //
 			CryptoCloudContentRepositoryFactory cryptoFactory, //
 			LocalStorageContentRepositoryFactory localStorageFactory, //
 			WebDavCloudContentRepositoryFactory webDavFactory) {
@@ -32,6 +34,7 @@ public class CloudContentRepositoryFactories implements Iterable<CloudContentRep
 		factories = asList(dropboxFactory, //
 				googleDriveFactory, //
 				oneDriveFactory, //
+				pCloudFactory, //
 				cryptoFactory, //
 				localStorageFactory, //
 				webDavFactory);

domain/src/main/java/org/cryptomator/domain/CloudType.java

@@ -2,6 +2,6 @@ package org.cryptomator.domain;
 
 public enum CloudType {
 
-	DROPBOX, GOOGLE_DRIVE, ONEDRIVE, WEBDAV, LOCAL, CRYPTO
+	DROPBOX, GOOGLE_DRIVE, ONEDRIVE, PCLOUD, WEBDAV, LOCAL, CRYPTO
 
 }

domain/src/main/java/org/cryptomator/domain/PCloud.java

@@ -0,0 +1,140 @@
+package org.cryptomator.domain;
+
+import org.jetbrains.annotations.NotNull;
+
+public class PCloud implements Cloud {
+
+	private final Long id;
+	private final String accessToken;
+	private final String url;
+	private final String username;
+
+	private PCloud(Builder builder) {
+		this.id = builder.id;
+		this.accessToken = builder.accessToken;
+		this.url = builder.url;
+		this.username = builder.username;
+	}
+
+	public static Builder aPCloud() {
+		return new Builder();
+	}
+
+	public static Builder aCopyOf(PCloud pCloud) {
+		return new Builder() //
+				.withId(pCloud.id()) //
+				.withAccessToken(pCloud.accessToken()) //
+				.withUrl(pCloud.url()) //
+				.withUsername(pCloud.username());
+	}
+
+	@Override
+	public Long id() {
+		return id;
+	}
+
+	public String accessToken() {
+		return accessToken;
+	}
+
+	public String url() {
+		return url;
+	}
+
+	public String username() {
+		return username;
+	}
+
+	@Override
+	public CloudType type() {
+		return CloudType.PCLOUD;
+	}
+
+	@Override
+	public boolean configurationMatches(Cloud cloud) {
+		return cloud instanceof PCloud && configurationMatches((PCloud) cloud);
+	}
+
+	private boolean configurationMatches(PCloud cloud) {
+		return username.equals(cloud.username);
+	}
+
+
+	@Override
+	public boolean predefined() {
+		return false;
+	}
+
+	@Override
+	public boolean persistent() {
+		return true;
+	}
+
+	@Override
+	public boolean requiresNetwork() {
+		return true;
+	}
+
+	@NotNull
+	@Override
+	public String toString() {
+		return "PCLOUD";
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null || getClass() != obj.getClass()) {
+			return false;
+		}
+		if (obj == this) {
+			return true;
+		}
+		return internalEquals((PCloud) obj);
+	}
+
+	@Override
+	public int hashCode() {
+		return id == null ? 0 : id.hashCode();
+	}
+
+	private boolean internalEquals(PCloud obj) {
+		return id != null && id.equals(obj.id);
+	}
+
+	public static class Builder {
+
+		private Long id;
+		private String accessToken;
+		private String url;
+		private String username;
+
+		private Builder() {
+		}
+
+		public Builder withId(Long id) {
+			this.id = id;
+			return this;
+		}
+
+		public Builder withAccessToken(String accessToken) {
+			this.accessToken = accessToken;
+			return this;
+		}
+
+		public Builder withUrl(String url) {
+			this.url = url;
+			return this;
+		}
+
+		public Builder withUsername(String username) {
+			this.username = username;
+			return this;
+		}
+
+		public PCloud build() {
+			return new PCloud(this);
+		}
+
+	}
+
+}

domain/src/main/java/org/cryptomator/domain/usecases/cloud/ConnectToPCloud.java

@@ -0,0 +1,23 @@
+package org.cryptomator.domain.usecases.cloud;
+
+import org.cryptomator.domain.PCloud;
+import org.cryptomator.domain.exception.BackendException;
+import org.cryptomator.domain.repository.CloudContentRepository;
+import org.cryptomator.generator.Parameter;
+import org.cryptomator.generator.UseCase;
+
+@UseCase
+class ConnectToPCloud {
+
+	private final CloudContentRepository cloudContentRepository;
+	private final PCloud cloud;
+
+	public ConnectToPCloud(CloudContentRepository cloudContentRepository, @Parameter PCloud cloud) {
+		this.cloudContentRepository = cloudContentRepository;
+		this.cloud = cloud;
+	}
+
+	public void execute() throws BackendException {
+		cloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(cloud);
+	}
+}

pcloud-sdk-java

@@ -0,0 +1 @@
+Subproject commit d12c6e6c4af8d0360812900663d5298ca093377b

presentation/build.gradle

@@ -51,6 +51,7 @@ android {
 
 			buildConfigField "String", "DROPBOX_API_KEY", "\"" + getApiKey('DROPBOX_API_KEY') + "\""
 			manifestPlaceholders = [DROPBOX_API_KEY: getApiKey('DROPBOX_API_KEY')]
+			buildConfigField "String", "PCLOUD_CLIENT_ID", "\"" + getApiKey('PCLOUD_CLIENT_ID') + "\""
 
 			resValue "string", "app_id", androidApplicationId
 		}
@@ -65,6 +66,7 @@ android {
 
 			buildConfigField "String", "DROPBOX_API_KEY", "\"" + getApiKey('DROPBOX_API_KEY_DEBUG') + "\""
 			manifestPlaceholders = [DROPBOX_API_KEY: getApiKey('DROPBOX_API_KEY_DEBUG')]
+			buildConfigField "String", "PCLOUD_CLIENT_ID", "\"" + getApiKey('PCLOUD_CLIENT_ID_DEBUG') + "\""
 
 			applicationIdSuffix ".debug"
 			versionNameSuffix '-DEBUG'
@@ -118,6 +120,7 @@ dependencies {
 	implementation project(':util')
 	implementation project(':domain')
 	implementation project(':data')
+	implementation project(':pcloud-sdk-android')
 
 	// dagger
 	kapt dependencies.daggerCompiler

presentation/src/main/java/org/cryptomator/presentation/model/CloudTypeModel.kt

@@ -7,42 +7,59 @@ enum class CloudTypeModel(builder: Builder) {
 
 	CRYPTO(Builder("CRYPTO", R.string.cloud_names_crypto)),  //
 	DROPBOX(Builder("DROPBOX", R.string.cloud_names_dropbox) //
-			.withCloudImageResource(R.drawable.cloud_type_dropbox) //
-			.withCloudImageLargeResource(R.drawable.cloud_type_dropbox_large)),  //
+			.withCloudImageResource(R.drawable.dropbox) //
+			.withVaultImageResource(R.drawable.dropbox_vault) //
+			.withVaultSelectedImageResource(R.drawable.dropbox_vault_selected)),  //
 	GOOGLE_DRIVE(Builder("GOOGLE_DRIVE", R.string.cloud_names_google_drive) //
-			.withCloudImageResource(R.drawable.cloud_type_google_drive) //
-			.withCloudImageLargeResource(R.drawable.cloud_type_google_drive_large)),  //
+			.withCloudImageResource(R.drawable.google_drive) //
+			.withVaultImageResource(R.drawable.google_drive_vault) //
+			.withVaultSelectedImageResource(R.drawable.google_drive_vault_selected)),  //
 	ONEDRIVE(Builder("ONEDRIVE", R.string.cloud_names_onedrive) //
-			.withCloudImageResource(R.drawable.cloud_type_onedrive) //
-			.withCloudImageLargeResource(R.drawable.cloud_type_onedrive_large)),  //
+			.withCloudImageResource(R.drawable.onedrive) //
+			.withVaultImageResource(R.drawable.onedrive_vault) //
+			.withVaultSelectedImageResource(R.drawable.onedrive_vault_selected)),  //
+	PCLOUD(Builder("PCLOUD", R.string.cloud_names_pcloud) //
+			.withCloudImageResource(R.drawable.pcloud) //
+			.withVaultImageResource(R.drawable.pcloud_vault) //
+			.withVaultSelectedImageResource(R.drawable.pcloud_vault_selected) //
+			.withMultiInstances()),  //
 	WEBDAV(Builder("WEBDAV", R.string.cloud_names_webdav) //
-			.withCloudImageResource(R.drawable.cloud_type_webdav) //
-			.withCloudImageLargeResource(R.drawable.cloud_type_webdav_large) //
+			.withCloudImageResource(R.drawable.webdav) //
+			.withVaultImageResource(R.drawable.webdav_vault) //
+			.withVaultSelectedImageResource(R.drawable.webdav_vault_selected) //
 			.withMultiInstances()),  //
 	LOCAL(Builder("LOCAL", R.string.cloud_names_local_storage) //
-			.withCloudImageResource(R.drawable.storage_type_local) //
-			.withCloudImageLargeResource(R.drawable.storage_type_local_large) //
+			.withCloudImageResource(R.drawable.local_fs) //
+			.withVaultImageResource(R.drawable.local_fs_vault) //
+			.withVaultSelectedImageResource(R.drawable.local_fs_vault_selected) //
 			.withMultiInstances());
 
 	val cloudName: String = builder.cloudName
 	val displayNameResource: Int = builder.displayNameResource
 	val cloudImageResource: Int = builder.cloudImageResource
-	val cloudImageLargeResource: Int = builder.cloudImageLargeResource
+	val vaultImageResource: Int = builder.vaultImageResource
+	val vaultSelectedImageResource: Int = builder.vaultSelectedImageResource
 	val isMultiInstance: Boolean = builder.multiInstances
 
 	private class Builder(val cloudName: String, val displayNameResource: Int) {
 
 		var cloudImageResource = 0
-		var cloudImageLargeResource = 0
+		var vaultImageResource = 0
+		var vaultSelectedImageResource = 0
 		var multiInstances = false
 
-		fun withCloudImageResource(cloudImageResource: Int): Builder {
-			this.cloudImageResource = cloudImageResource
+		fun withCloudImageResource(cloudImageLargeResource: Int): Builder {
+			this.cloudImageResource = cloudImageLargeResource
 			return this
 		}
 
-		fun withCloudImageLargeResource(cloudImageLargeResource: Int): Builder {
-			this.cloudImageLargeResource = cloudImageLargeResource
+		fun withVaultImageResource(vaultImageResource: Int): Builder {
+			this.vaultImageResource = vaultImageResource
+			return this
+		}
+
+		fun withVaultSelectedImageResource(vaultSelectedImageResource: Int): Builder {
+			this.vaultSelectedImageResource = vaultSelectedImageResource
 			return this
 		}
 

presentation/src/main/java/org/cryptomator/presentation/model/PCloudModel.kt

@@ -0,0 +1,32 @@
+package org.cryptomator.presentation.model
+
+import org.cryptomator.domain.Cloud
+import org.cryptomator.domain.PCloud
+import org.cryptomator.presentation.R
+
+class PCloudModel(cloud: Cloud) : CloudModel(cloud) {
+
+	override fun name(): Int {
+		return R.string.cloud_names_pcloud
+	}
+
+	override fun username(): String? {
+		return cloud().username()
+	}
+
+	fun url(): String {
+		return cloud().url()
+	}
+
+	fun id(): Long {
+		return cloud().id()
+	}
+
+	private fun cloud(): PCloud {
+		return toCloud() as PCloud
+	}
+
+	override fun cloudType(): CloudTypeModel {
+		return CloudTypeModel.PCLOUD
+	}
+}

presentation/src/main/java/org/cryptomator/presentation/model/mappers/CloudModelMapper.kt

@@ -9,6 +9,7 @@ import org.cryptomator.presentation.model.DropboxCloudModel
 import org.cryptomator.presentation.model.GoogleDriveCloudModel
 import org.cryptomator.presentation.model.LocalStorageModel
 import org.cryptomator.presentation.model.OnedriveCloudModel
+import org.cryptomator.presentation.model.PCloudModel
 import org.cryptomator.presentation.model.WebDavCloudModel
 import javax.inject.Inject
 
@@ -24,6 +25,7 @@ class CloudModelMapper @Inject constructor() : ModelMapper<CloudModel, Cloud>()
 			CloudTypeModel.DROPBOX -> DropboxCloudModel(domainObject)
 			CloudTypeModel.GOOGLE_DRIVE -> GoogleDriveCloudModel(domainObject)
 			CloudTypeModel.ONEDRIVE -> OnedriveCloudModel(domainObject)
+			CloudTypeModel.PCLOUD -> PCloudModel(domainObject)
 			CloudTypeModel.CRYPTO -> CryptoCloudModel(domainObject)
 			CloudTypeModel.LOCAL -> LocalStorageModel(domainObject)
 			CloudTypeModel.WEBDAV -> WebDavCloudModel(domainObject)

presentation/src/main/java/org/cryptomator/presentation/presenter/CloudConnectionListPresenter.kt

@@ -6,16 +6,23 @@ import android.net.Uri
 import android.os.Build
 import android.widget.Toast
 import androidx.annotation.RequiresApi
+import com.pcloud.sdk.AuthorizationActivity
+import com.pcloud.sdk.AuthorizationData
+import com.pcloud.sdk.AuthorizationRequest
+import com.pcloud.sdk.AuthorizationResult
 import org.cryptomator.domain.Cloud
 import org.cryptomator.domain.LocalStorageCloud
+import org.cryptomator.domain.PCloud
 import org.cryptomator.domain.Vault
 import org.cryptomator.domain.di.PerView
 import org.cryptomator.domain.usecases.cloud.AddOrChangeCloudConnectionUseCase
 import org.cryptomator.domain.usecases.cloud.GetCloudsUseCase
+import org.cryptomator.domain.usecases.cloud.GetUsernameUseCase
 import org.cryptomator.domain.usecases.cloud.RemoveCloudUseCase
 import org.cryptomator.domain.usecases.vault.DeleteVaultUseCase
 import org.cryptomator.domain.usecases.vault.GetVaultListUseCase
 import org.cryptomator.generator.Callback
+import org.cryptomator.presentation.BuildConfig
 import org.cryptomator.presentation.R
 import org.cryptomator.presentation.exception.ExceptionHandlers
 import org.cryptomator.presentation.intent.Intents
@@ -26,6 +33,7 @@ import org.cryptomator.presentation.model.WebDavCloudModel
 import org.cryptomator.presentation.model.mappers.CloudModelMapper
 import org.cryptomator.presentation.ui.activity.view.CloudConnectionListView
 import org.cryptomator.presentation.workflow.ActivityResult
+import org.cryptomator.util.crypto.CredentialCryptor
 import java.util.*
 import java.util.concurrent.atomic.AtomicReference
 import javax.inject.Inject
@@ -34,6 +42,7 @@ import timber.log.Timber
 @PerView
 class CloudConnectionListPresenter @Inject constructor( //
 		private val getCloudsUseCase: GetCloudsUseCase,  //
+		private val getUsernameUseCase: GetUsernameUseCase, //
 		private val removeCloudUseCase: RemoveCloudUseCase,  //
 		private val addOrChangeCloudConnectionUseCase: AddOrChangeCloudConnectionUseCase,  //
 		private val getVaultListUseCase: GetVaultListUseCase,  //
@@ -122,6 +131,18 @@ class CloudConnectionListPresenter @Inject constructor( //
 		when (selectedCloudType.get()) {
 			CloudTypeModel.WEBDAV -> requestActivityResult(ActivityResultCallbacks.addChangeWebDavCloud(),  //
 					Intents.webDavAddOrChangeIntent())
+			CloudTypeModel.PCLOUD -> {
+				val authIntent: Intent = AuthorizationActivity.createIntent(
+						this.context(),
+						AuthorizationRequest.create()
+								.setType(AuthorizationRequest.Type.TOKEN)
+								.setClientId(BuildConfig.PCLOUD_CLIENT_ID)
+								.setForceAccessApproval(true)
+								.addPermission("manageshares")
+								.build())
+				requestActivityResult(ActivityResultCallbacks.pCloudAuthenticationFinished(),  //
+						authIntent)
+			}
 			CloudTypeModel.LOCAL -> openDocumentTree()
 		}
 	}
@@ -162,6 +183,71 @@ class CloudConnectionListPresenter @Inject constructor( //
 		loadCloudList()
 	}
 
+	@Callback
+	fun pCloudAuthenticationFinished(activityResult: ActivityResult) {
+		val authData: AuthorizationData = AuthorizationActivity.getResult(activityResult.intent())
+		val result: AuthorizationResult = authData.result
+
+		when (result) {
+			AuthorizationResult.ACCESS_GRANTED -> {
+				val accessToken: String = CredentialCryptor //
+						.getInstance(this.context()) //
+						.encrypt(authData.token)
+				val pCloudSkeleton: PCloud = PCloud.aPCloud() //
+						.withAccessToken(accessToken)
+						.withUrl(authData.apiHost)
+						.build();
+				getUsernameUseCase //
+						.withCloud(pCloudSkeleton) //
+						.run(object : DefaultResultHandler<String>() {
+							override fun onSuccess(username: String?) {
+								prepareForSavingPCloud(PCloud.aCopyOf(pCloudSkeleton).withUsername(username).build())
+							}
+						})
+			}
+			AuthorizationResult.ACCESS_DENIED -> {
+				Timber.tag("CloudConnListPresenter").e("Account access denied")
+				view?.showMessage(String.format(getString(R.string.screen_authenticate_auth_authentication_failed), getString(R.string.cloud_names_pcloud)))
+			}
+			AuthorizationResult.AUTH_ERROR -> {
+				Timber.tag("CloudConnListPresenter").e("""Account access grant error: ${authData.errorMessage}""".trimIndent())
+				view?.showMessage(String.format(getString(R.string.screen_authenticate_auth_authentication_failed), getString(R.string.cloud_names_pcloud)))
+			}
+			AuthorizationResult.CANCELLED -> {
+				Timber.tag("CloudConnListPresenter").i("Account access grant cancelled")
+				view?.showMessage(String.format(getString(R.string.screen_authenticate_auth_authentication_failed), getString(R.string.cloud_names_pcloud)))
+			}
+		}
+	}
+
+	fun prepareForSavingPCloud(cloud: PCloud) {
+		getCloudsUseCase //
+				.withCloudType(CloudTypeModel.valueOf(selectedCloudType.get())) //
+				.run(object : DefaultResultHandler<List<Cloud>>() {
+					override fun onSuccess(clouds: List<Cloud>) {
+						clouds.firstOrNull {
+							(it as PCloud).username() == cloud.username()
+						}?.let {
+							it as PCloud
+							saveCloud(PCloud.aCopyOf(it) //
+									.withUrl(cloud.url())
+									.withAccessToken(cloud.accessToken())
+									.build())
+						} ?: saveCloud(cloud)
+					}
+				})
+	}
+
+	fun saveCloud(cloud: PCloud) {
+		addOrChangeCloudConnectionUseCase //
+				.withCloud(cloud) //
+				.run(object : DefaultResultHandler<Void?>() {
+					override fun onSuccess(void: Void?) {
+						loadCloudList()
+					}
+				})
+	}
+
 	@Callback
 	@RequiresApi(api = Build.VERSION_CODES.KITKAT)
 	fun pickedLocalStorageLocation(result: ActivityResult) {

presentation/src/main/java/org/cryptomator/presentation/presenter/CloudSettingsPresenter.kt

@@ -2,6 +2,7 @@ package org.cryptomator.presentation.presenter
 
 import org.cryptomator.domain.Cloud
 import org.cryptomator.domain.LocalStorageCloud
+import org.cryptomator.domain.PCloud
 import org.cryptomator.domain.WebDavCloud
 import org.cryptomator.domain.di.PerView
 import org.cryptomator.domain.exception.FatalBackendException
@@ -16,6 +17,7 @@ import org.cryptomator.presentation.intent.Intents
 import org.cryptomator.presentation.model.CloudModel
 import org.cryptomator.presentation.model.CloudTypeModel
 import org.cryptomator.presentation.model.LocalStorageModel
+import org.cryptomator.presentation.model.PCloudModel
 import org.cryptomator.presentation.model.WebDavCloudModel
 import org.cryptomator.presentation.model.mappers.CloudModelMapper
 import org.cryptomator.presentation.ui.activity.view.CloudSettingsView
@@ -34,6 +36,7 @@ class CloudSettingsPresenter @Inject constructor( //
 	private val nonSingleLoginClouds: Set<CloudTypeModel> = EnumSet.of( //
 			CloudTypeModel.CRYPTO,  //
 			CloudTypeModel.LOCAL,  //
+			CloudTypeModel.PCLOUD, //
 			CloudTypeModel.WEBDAV)
 
 	fun loadClouds() {
@@ -41,7 +44,7 @@ class CloudSettingsPresenter @Inject constructor( //
 	}
 
 	fun onCloudClicked(cloudModel: CloudModel) {
-		if (isWebdavOrLocal(cloudModel)) {
+		if (isWebdavOrPCloudOrLocal(cloudModel)) {
 			startConnectionListActivity(cloudModel.cloudType())
 		} else {
 			if (isLoggedIn(cloudModel)) {
@@ -58,8 +61,8 @@ class CloudSettingsPresenter @Inject constructor( //
 		}
 	}
 
-	private fun isWebdavOrLocal(cloudModel: CloudModel): Boolean {
-		return cloudModel is WebDavCloudModel || cloudModel is LocalStorageModel
+	private fun isWebdavOrPCloudOrLocal(cloudModel: CloudModel): Boolean {
+		return cloudModel is WebDavCloudModel || cloudModel is LocalStorageModel || cloudModel is PCloudModel
 	}
 
 	private fun loginCloud(cloudModel: CloudModel) {
@@ -91,6 +94,7 @@ class CloudSettingsPresenter @Inject constructor( //
 	private fun effectiveTitle(cloudTypeModel: CloudTypeModel): String {
 		when (cloudTypeModel) {
 			CloudTypeModel.WEBDAV -> return context().getString(R.string.screen_cloud_settings_webdav_connections)
+			CloudTypeModel.PCLOUD -> return context().getString(R.string.screen_cloud_settings_pcloud_connections)
 			CloudTypeModel.LOCAL -> return context().getString(R.string.screen_cloud_settings_local_storage_locations)
 		}
 		return context().getString(R.string.screen_cloud_settings_title)
@@ -123,6 +127,7 @@ class CloudSettingsPresenter @Inject constructor( //
 					.toMutableList() //
 					.also {
 						it.add(aWebdavCloud())
+						it.add(aPCloud())
 						it.add(aLocalCloud())
 					}
 			view?.render(cloudModel)
@@ -132,6 +137,10 @@ class CloudSettingsPresenter @Inject constructor( //
 			return WebDavCloudModel(WebDavCloud.aWebDavCloudCloud().build())
 		}
 
+		private fun aPCloud(): PCloudModel {
+			return PCloudModel(PCloud.aPCloud().build())
+		}
+
 		private fun aLocalCloud(): CloudModel {
 			return LocalStorageModel(LocalStorageCloud.aLocalStorage().build())
 		}

presentation/src/main/java/org/cryptomator/presentation/ui/activity/ChooseCloudServiceActivity.kt

@@ -29,7 +29,7 @@ class ChooseCloudServiceActivity : BaseActivity(), ChooseCloudServiceView {
 		setSupportActionBar(toolbar)
 	}
 
-	override fun createFragment(): Fragment? = ChooseCloudServiceFragment()
+	override fun createFragment(): Fragment = ChooseCloudServiceFragment()
 
 	override fun getCustomMenuResource(): Int = R.menu.menu_cloud_services
 

presentation/src/main/java/org/cryptomator/presentation/ui/activity/ImagePreviewActivity.kt

@@ -207,7 +207,7 @@ class ImagePreviewActivity : BaseActivity(), ImagePreviewView, ConfirmDeleteClou
 		presenter.pageIndexes.size.let {
 			when {
 				it == 0 -> {
-					showMessage(getString(R.string.dialog_no_more_images_to_display	))
+					showMessage(getString(R.string.dialog_no_more_images_to_display))
 					finish()
 				}
 				it > index -> updateTitle(index)

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/BiometricAuthSettingsAdapter.kt

@@ -48,7 +48,7 @@ constructor() : RecyclerViewBaseAdapter<VaultModel, BiometricAuthSettingsAdapter
 			val vaultModel = getItem(position)
 
 			itemView.vaultName.text = vaultModel.name
-			itemView.cloud.setImageResource(vaultModel.cloudType.cloudImageResource)
+			itemView.cloud.setImageResource(vaultModel.cloudType.vaultImageResource)
 
 			itemView.toggleBiometricAuth.isChecked = vaultModel.password != null
 

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/CloudConnectionListAdapter.kt

@@ -7,6 +7,7 @@ import org.cryptomator.domain.exception.FatalBackendException
 import org.cryptomator.presentation.R
 import org.cryptomator.presentation.model.CloudModel
 import org.cryptomator.presentation.model.LocalStorageModel
+import org.cryptomator.presentation.model.PCloudModel
 import org.cryptomator.presentation.model.WebDavCloudModel
 import org.cryptomator.presentation.model.comparator.CloudModelComparator
 import org.cryptomator.presentation.ui.adapter.CloudConnectionListAdapter.CloudConnectionHolder
@@ -54,6 +55,8 @@ internal constructor(context: Context) : RecyclerViewBaseAdapter<CloudModel, Clo
 
 			if (cloudModel is WebDavCloudModel) {
 				bindWebDavCloudModel(cloudModel)
+			} else if (cloudModel is PCloudModel) {
+				bindPCloudModel(cloudModel)
 			} else if (cloudModel is LocalStorageModel) {
 				bindLocalStorageCloudModel(cloudModel)
 			}
@@ -70,6 +73,11 @@ internal constructor(context: Context) : RecyclerViewBaseAdapter<CloudModel, Clo
 
 		}
 
+		private fun bindPCloudModel(cloudModel: PCloudModel) {
+			itemView.cloudText.text = cloudModel.username()
+			itemView.cloudSubText.visibility = View.GONE
+		}
+
 		private fun bindLocalStorageCloudModel(cloudModel: LocalStorageModel) {
 			if (cloudModel.location().isEmpty()) {
 				itemView.cloudText.text = cloudModel.storage()

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/CloudSettingsAdapter.kt

@@ -41,6 +41,8 @@ constructor(private val context: Context) : RecyclerViewBaseAdapter<CloudModel,
 
 			if (webdav(cloudModel.cloudType())) {
 				itemView.cloudName.text = context.getString(R.string.screen_cloud_settings_webdav_connections)
+			} else if (pCloud(cloudModel.cloudType())) {
+				itemView.cloudName.text = context.getString(R.string.screen_cloud_settings_pcloud_connections)
 			} else if (local(cloudModel.cloudType())) {
 				itemView.cloudName.text = context.getString(R.string.screen_cloud_settings_local_storage_locations)
 			} else {
@@ -79,4 +81,8 @@ constructor(private val context: Context) : RecyclerViewBaseAdapter<CloudModel,
 	private fun webdav(cloudType: CloudTypeModel): Boolean {
 		return CloudTypeModel.WEBDAV == cloudType
 	}
+
+	private fun pCloud(cloudType: CloudTypeModel): Boolean {
+		return CloudTypeModel.PCLOUD == cloudType
+	}
 }

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/CloudsAdapter.kt

@@ -5,7 +5,7 @@ import org.cryptomator.presentation.R
 import org.cryptomator.presentation.model.CloudTypeModel
 import org.cryptomator.presentation.ui.adapter.CloudsAdapter.CloudViewHolder
 import javax.inject.Inject
-import kotlinx.android.synthetic.main.item_cloud.view.cloud
+import kotlinx.android.synthetic.main.item_cloud.view.cloudImage
 import kotlinx.android.synthetic.main.item_cloud.view.cloudName
 
 class CloudsAdapter @Inject
@@ -28,10 +28,10 @@ constructor() : RecyclerViewBaseAdapter<CloudTypeModel, CloudsAdapter.OnItemClic
 
 		override fun bind(position: Int) {
 			val cloudTypeModel = getItem(position)
-			itemView.cloud.setImageResource(cloudTypeModel.cloudImageLargeResource)
+			itemView.cloudImage.setImageResource(cloudTypeModel.cloudImageResource)
 			itemView.cloudName.setText(cloudTypeModel.displayNameResource)
 
-			itemView.cloud.setOnClickListener { callback.onCloudClicked(cloudTypeModel) }
+			itemView.setOnClickListener { callback.onCloudClicked(cloudTypeModel) }
 		}
 	}
 }

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/SharedLocationsAdapter.kt

@@ -67,13 +67,13 @@ constructor() : RecyclerViewBaseAdapter<VaultModel, SharedLocationsAdapter.Callb
 			boundVault = getItem(position)
 
 			boundVault?.let {
-				itemView.cloudImage.setImageResource(it.cloudType.cloudImageResource)
 				itemView.vaultName.text = it.name
 
 				val boundVaultSelected = it == selectedVault
 				itemView.selectedVault.isChecked = boundVaultSelected
 				itemView.selectedVault.isClickable = !boundVaultSelected
 				if (boundVaultSelected) {
+					itemView.cloudImage.setImageResource(it.cloudType.vaultSelectedImageResource)
 					if (selectedLocation != null) {
 						itemView.chosenLocation.visibility = View.VISIBLE
 						itemView.chosenLocation.text = selectedLocation
@@ -82,6 +82,7 @@ constructor() : RecyclerViewBaseAdapter<VaultModel, SharedLocationsAdapter.Callb
 					}
 					itemView.chooseFolderLocation.visibility = View.VISIBLE
 				} else {
+					itemView.cloudImage.setImageResource(it.cloudType.vaultImageResource)
 					itemView.chosenLocation.visibility = View.GONE
 					itemView.chooseFolderLocation.visibility = View.GONE
 				}

presentation/src/main/java/org/cryptomator/presentation/ui/adapter/VaultsAdapter.kt

@@ -60,7 +60,7 @@ internal constructor() : RecyclerViewBaseAdapter<VaultModel, VaultsAdapter.OnIte
 			itemView.vaultName.text = vaultModel.name
 			itemView.vaultPath.text = vaultModel.path
 
-			itemView.cloudImage.setImageResource(vaultModel.cloudType.cloudImageResource)
+			itemView.cloudImage.setImageResource(vaultModel.cloudType.vaultImageResource)
 
 			if (vaultModel.isLocked) {
 				itemView.unlockedImage.visibility = View.GONE
@@ -68,11 +68,17 @@ internal constructor() : RecyclerViewBaseAdapter<VaultModel, VaultsAdapter.OnIte
 				itemView.unlockedImage.visibility = View.VISIBLE
 			}
 
-			itemView.setOnClickListener { callback.onVaultClicked(vaultModel) }
+			itemView.setOnClickListener {
+				itemView.cloudImage.setImageResource(vaultModel.cloudType.vaultSelectedImageResource)
+				callback.onVaultClicked(vaultModel)
+			}
 
 			itemView.unlockedImage.setOnClickListener { callback.onVaultLockClicked(vaultModel) }
 
-			itemView.settings.setOnClickListener { callback.onVaultSettingsClicked(vaultModel) }
+			itemView.settings.setOnClickListener {
+				itemView.cloudImage.setImageResource(vaultModel.cloudType.vaultSelectedImageResource)
+				callback.onVaultSettingsClicked(vaultModel)
+			}
 		}
 	}
 

presentation/src/main/java/org/cryptomator/presentation/ui/bottomsheet/CloudConnectionSettingsBottomSheet.kt

@@ -7,6 +7,7 @@ import org.cryptomator.presentation.R
 import org.cryptomator.presentation.model.CloudModel
 import org.cryptomator.presentation.model.CloudTypeModel
 import org.cryptomator.presentation.model.LocalStorageModel
+import org.cryptomator.presentation.model.PCloudModel
 import org.cryptomator.presentation.model.WebDavCloudModel
 import kotlinx.android.synthetic.main.dialog_bottom_sheet_cloud_settings.change_cloud
 import kotlinx.android.synthetic.main.dialog_bottom_sheet_cloud_settings.delete_cloud
@@ -28,6 +29,7 @@ class CloudConnectionSettingsBottomSheet : BaseBottomSheet<CloudConnectionSettin
 
 		when (cloudModel.cloudType()) {
 			CloudTypeModel.WEBDAV -> bindViewForWebDAV(cloudModel as WebDavCloudModel)
+			CloudTypeModel.PCLOUD -> bindViewForPCloud(cloudModel as PCloudModel)
 			CloudTypeModel.LOCAL -> bindViewForLocal(cloudModel as LocalStorageModel)
 			else -> throw IllegalStateException("Cloud model is not binded in the view")
 		}
@@ -59,6 +61,11 @@ class CloudConnectionSettingsBottomSheet : BaseBottomSheet<CloudConnectionSettin
 		tv_cloud_subtext.text = cloudModel.username()
 	}
 
+	private fun bindViewForPCloud(cloudModel: PCloudModel) {
+		change_cloud.visibility = View.GONE
+		tv_cloud_name.text = cloudModel.username()
+	}
+
 	companion object {
 
 		private const val CLOUD_NODE_ARG = "cloudModel"

presentation/src/main/java/org/cryptomator/presentation/ui/bottomsheet/SettingsVaultBottomSheet.kt

@@ -31,7 +31,7 @@ class SettingsVaultBottomSheet : BaseBottomSheet<SettingsVaultBottomSheet.Callba
 			lock_vault.visibility = LinearLayout.GONE
 		}
 		val cloudType = vaultModel.cloudType
-		cloud_image.setImageResource(cloudType.cloudImageResource)
+		cloud_image.setImageResource(cloudType.vaultSelectedImageResource)
 		vault_name.text = vaultModel.name
 		vault_path.text = vaultModel.path
 

presentation/src/main/java/org/cryptomator/presentation/ui/fragment/ChooseCloudServiceFragment.kt

@@ -1,6 +1,6 @@
 package org.cryptomator.presentation.ui.fragment
 
-import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager
 import org.cryptomator.generator.Fragment
 import org.cryptomator.presentation.R
 import org.cryptomator.presentation.model.CloudTypeModel
@@ -36,7 +36,7 @@ class ChooseCloudServiceFragment : BaseFragment() {
 
 	private fun setupRecyclerView() {
 		cloudsAdapter.setCallback(onItemClickListener)
-		recyclerView.layoutManager = GridLayoutManager(context(), 2)
+		recyclerView.layoutManager = LinearLayoutManager(context())
 		recyclerView.adapter = cloudsAdapter
 		// smoother scrolling
 		recyclerView.setHasFixedSize(true)