Move Lib\Backend to PSR-4

14 files changed, 949 insertions, 0 deletions

diff --git a/apps/files_external/lib/Lib/Backend/AmazonS3.php b/apps/files_external/lib/Lib/Backend/AmazonS3.php
new file mode 100644
index 00000000000..449b6c0379d
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/AmazonS3.php
@@ -0,0 +1,61 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\AmazonS3\AccessKey;
+
+class AmazonS3 extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, AccessKey $legacyAuth) {
+		$this
+			->setIdentifier('amazons3')
+			->addIdentifierAlias('\OC\Files\Storage\AmazonS3') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\AmazonS3')
+			->setText($l->t('Amazon S3'))
+			->addParameters([
+				(new DefinitionParameter('bucket', $l->t('Bucket'))),
+				(new DefinitionParameter('hostname', $l->t('Hostname')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('port', $l->t('Port')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('region', $l->t('Region')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('use_ssl', $l->t('Enable SSL')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+				(new DefinitionParameter('use_path_style', $l->t('Enable Path Style')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+			])
+			->addAuthScheme(AccessKey::SCHEME_AMAZONS3_ACCESSKEY)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/Backend.php b/apps/files_external/lib/Lib/Backend/Backend.php
new file mode 100644
index 00000000000..8fb84b0e835
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/Backend.php
@@ -0,0 +1,165 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCA\Files_External\Lib\StorageConfig;
+use \OCA\Files_External\Lib\VisibilityTrait;
+use \OCA\Files_External\Lib\FrontendDefinitionTrait;
+use \OCA\Files_External\Lib\PriorityTrait;
+use \OCA\Files_External\Lib\DependencyTrait;
+use \OCA\Files_External\Lib\StorageModifierTrait;
+use \OCA\Files_External\Lib\IdentifierTrait;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+
+/**
+ * Storage backend
+ *
+ * A backend can have services injected during construction,
+ * such as \OCP\IDB for database operations. This allows a backend
+ * to perform advanced operations based on provided information.
+ *
+ * An authenication scheme defines the parameter interface, common to the
+ * storage implementation, the backend and the authentication mechanism.
+ * A storage implementation expects parameters according to the authentication
+ * scheme, which are provided from the authentication mechanism.
+ *
+ * This class uses the following traits:
+ *  - VisibilityTrait
+ *      Restrict usage to admin-only/none
+ *  - FrontendDefinitionTrait
+ *      Specify configuration parameters and other definitions
+ *  - PriorityTrait
+ *      Allow objects to prioritize over others with the same mountpoint
+ *  - DependencyTrait
+ *      The object requires certain dependencies to be met
+ *  - StorageModifierTrait
+ *      Object can affect storage mounting
+ */
+class Backend implements \JsonSerializable {
+
+	use VisibilityTrait;
+	use FrontendDefinitionTrait;
+	use PriorityTrait;
+	use DependencyTrait;
+	use StorageModifierTrait;
+	use IdentifierTrait;
+
+	/** @var string storage class */
+	private $storageClass;
+
+	/** @var array 'scheme' => true, supported authentication schemes */
+	private $authSchemes = [];
+
+	/** @var AuthMechanism|callable authentication mechanism fallback */
+	private $legacyAuthMechanism;
+
+	/**
+	 * @return string
+	 */
+	public function getStorageClass() {
+		return $this->storageClass;
+	}
+
+	/**
+	 * @param string $class
+	 * @return self
+	 */
+	public function setStorageClass($class) {
+		$this->storageClass = $class;
+		return $this;
+	}
+
+	/**
+	 * @return array
+	 */
+	public function getAuthSchemes() {
+		if (empty($this->authSchemes)) {
+			return [AuthMechanism::SCHEME_NULL => true];
+		}
+		return $this->authSchemes;
+	}
+
+	/**
+	 * @param string $scheme
+	 * @return self
+	 */
+	public function addAuthScheme($scheme) {
+		$this->authSchemes[$scheme] = true;
+		return $this;
+	}
+
+	/**
+	 * @param array $parameters storage parameters, for dynamic mechanism selection
+	 * @return AuthMechanism
+	 */
+	public function getLegacyAuthMechanism(array $parameters = []) {
+		if (is_callable($this->legacyAuthMechanism)) {
+			return call_user_func($this->legacyAuthMechanism, $parameters);
+		}
+		return $this->legacyAuthMechanism;
+	}
+
+	/**
+	 * @param AuthMechanism $authMechanism
+	 * @return self
+	 */
+	public function setLegacyAuthMechanism(AuthMechanism $authMechanism) {
+		$this->legacyAuthMechanism = $authMechanism;
+		return $this;
+	}
+
+	/**
+	 * @param callable $callback dynamic auth mechanism selection
+	 * @return self
+	 */
+	public function setLegacyAuthMechanismCallback(callable $callback) {
+		$this->legacyAuthMechanism = $callback;
+	}
+
+	/**
+	 * Serialize into JSON for client-side JS
+	 *
+	 * @return array
+	 */
+	public function jsonSerialize() {
+		$data = $this->jsonSerializeDefinition();
+		$data += $this->jsonSerializeIdentifier();
+
+		$data['backend'] = $data['name']; // legacy compat
+		$data['priority'] = $this->getPriority();
+		$data['authSchemes'] = $this->getAuthSchemes();
+
+		return $data;
+	}
+
+	/**
+	 * Check if parameters are satisfied in a StorageConfig
+	 *
+	 * @param StorageConfig $storage
+	 * @return bool
+	 */
+	public function validateStorage(StorageConfig $storage) {
+		return $this->validateStorageDefinition($storage);
+	}
+
+}
+
diff --git a/apps/files_external/lib/Lib/Backend/DAV.php b/apps/files_external/lib/Lib/Backend/DAV.php
new file mode 100644
index 00000000000..c6e9630be9e
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/DAV.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\Password\Password;
+
+class DAV extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, Password $legacyAuth) {
+		$this
+			->setIdentifier('dav')
+			->addIdentifierAlias('\OC\Files\Storage\DAV') // legacy compat
+			->setStorageClass('\OC\Files\Storage\DAV')
+			->setText($l->t('WebDAV'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('URL'))),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('secure', $l->t('Secure https://')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/Dropbox.php b/apps/files_external/lib/Lib/Backend/Dropbox.php
new file mode 100644
index 00000000000..2133c274996
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/Dropbox.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\OAuth1\OAuth1;
+
+class Dropbox extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, OAuth1 $legacyAuth) {
+		$this
+			->setIdentifier('dropbox')
+			->addIdentifierAlias('\OC\Files\Storage\Dropbox') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\Dropbox')
+			->setText($l->t('Dropbox'))
+			->addParameters([
+				// all parameters handled in OAuth1 mechanism
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_OAUTH1)
+			->addCustomJs('dropbox')
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/FTP.php b/apps/files_external/lib/Lib/Backend/FTP.php
new file mode 100644
index 00000000000..3960592d0bc
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/FTP.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\Password\Password;
+
+class FTP extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, Password $legacyAuth) {
+		$this
+			->setIdentifier('ftp')
+			->addIdentifierAlias('\OC\Files\Storage\FTP') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\FTP')
+			->setText($l->t('FTP'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('Host'))),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('secure', $l->t('Secure ftps://')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/Google.php b/apps/files_external/lib/Lib/Backend/Google.php
new file mode 100644
index 00000000000..b18b7bdb348
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/Google.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\OAuth2\OAuth2;
+
+class Google extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, OAuth2 $legacyAuth) {
+		$this
+			->setIdentifier('googledrive')
+			->addIdentifierAlias('\OC\Files\Storage\Google') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\Google')
+			->setText($l->t('Google Drive'))
+			->addParameters([
+				// all parameters handled in OAuth2 mechanism
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_OAUTH2)
+			->addCustomJs('gdrive')
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/LegacyBackend.php b/apps/files_external/lib/Lib/Backend/LegacyBackend.php
new file mode 100644
index 00000000000..752c501e1ec
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/LegacyBackend.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\Auth\Builtin;
+use \OCA\Files_External\Lib\MissingDependency;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+/**
+ * Legacy compatibility for OC_Mount_Config::registerBackend()
+ */
+class LegacyBackend extends Backend {
+
+	use LegacyDependencyCheckPolyfill {
+		LegacyDependencyCheckPolyfill::checkDependencies as doCheckDependencies;
+	}
+
+	/** @var bool */
+	protected $hasDependencies = false;
+
+	/**
+	 * @param string $class
+	 * @param array $definition
+	 * @param Builtin $authMechanism
+	 */
+	public function __construct($class, array $definition, Builtin $authMechanism) {
+		$this
+			->setIdentifier($class)
+			->setStorageClass($class)
+			->setText($definition['backend'])
+			->addAuthScheme(Builtin::SCHEME_BUILTIN)
+			->setLegacyAuthMechanism($authMechanism)
+		;
+
+		foreach ($definition['configuration'] as $name => $placeholder) {
+			$flags = DefinitionParameter::FLAG_NONE;
+			$type = DefinitionParameter::VALUE_TEXT;
+			if ($placeholder[0] === '&') {
+				$flags = DefinitionParameter::FLAG_OPTIONAL;
+				$placeholder = substr($placeholder, 1);
+			}
+			switch ($placeholder[0]) {
+			case '!':
+				$type = DefinitionParameter::VALUE_BOOLEAN;
+				$placeholder = substr($placeholder, 1);
+				break;
+			case '*':
+				$type = DefinitionParameter::VALUE_PASSWORD;
+				$placeholder = substr($placeholder, 1);
+				break;
+			case '#':
+				$type = DefinitionParameter::VALUE_HIDDEN;
+				$placeholder = substr($placeholder, 1);
+				break;
+			}
+			$this->addParameter((new DefinitionParameter($name, $placeholder))
+				->setType($type)
+				->setFlags($flags)
+			);
+		}
+
+		if (isset($definition['priority'])) {
+			$this->setPriority($definition['priority']);
+		}
+		if (isset($definition['custom'])) {
+			$this->addCustomJs($definition['custom']);
+		}
+		if (isset($definition['has_dependencies']) && $definition['has_dependencies']) {
+			$this->hasDependencies = true;
+		}
+	}
+
+	/**
+	 * @return MissingDependency[]
+	 */
+	public function checkDependencies() {
+		if ($this->hasDependencies) {
+			return $this->doCheckDependencies();
+		}
+		return [];
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/Local.php b/apps/files_external/lib/Lib/Backend/Local.php
new file mode 100644
index 00000000000..1db707e7247
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/Local.php
@@ -0,0 +1,49 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\Auth\NullMechanism;
+
+class Local extends Backend {
+
+	public function __construct(IL10N $l, NullMechanism $legacyAuth) {
+		$this
+			->setIdentifier('local')
+			->addIdentifierAlias('\OC\Files\Storage\Local') // legacy compat
+			->setStorageClass('\OC\Files\Storage\Local')
+			->setText($l->t('Local'))
+			->addParameters([
+				(new DefinitionParameter('datadir', $l->t('Location'))),
+			])
+			->setAllowedVisibility(BackendService::VISIBILITY_ADMIN)
+			->setPriority(BackendService::PRIORITY_DEFAULT + 50)
+			->addAuthScheme(AuthMechanism::SCHEME_NULL)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/OwnCloud.php b/apps/files_external/lib/Lib/Backend/OwnCloud.php
new file mode 100644
index 00000000000..e92288b1354
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/OwnCloud.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+
+use \OCA\Files_External\Lib\Auth\Password\Password;
+
+class OwnCloud extends Backend {
+
+	public function __construct(IL10N $l, Password $legacyAuth) {
+		$this
+			->setIdentifier('owncloud')
+			->addIdentifierAlias('\OC\Files\Storage\OwnCloud') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\OwnCloud')
+			->setText($l->t('ownCloud'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('URL'))),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('secure', $l->t('Secure https://')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/SFTP.php b/apps/files_external/lib/Lib/Backend/SFTP.php
new file mode 100644
index 00000000000..fa33caeb576
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/SFTP.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+
+use \OCA\Files_External\Lib\Auth\Password\Password;
+
+class SFTP extends Backend {
+
+	public function __construct(IL10N $l, Password $legacyAuth) {
+		$this
+			->setIdentifier('sftp')
+			->addIdentifierAlias('\OC\Files\Storage\SFTP') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
+			->setText($l->t('SFTP'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('Host'))),
+				(new DefinitionParameter('root', $l->t('Root')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/SFTP_Key.php b/apps/files_external/lib/Lib/Backend/SFTP_Key.php
new file mode 100644
index 00000000000..838cf6c52b2
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/SFTP_Key.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\Auth\PublicKey\RSA;
+use \OCA\Files_External\Lib\Backend\SFTP;
+
+class SFTP_Key extends Backend {
+
+	public function __construct(IL10N $l, RSA $legacyAuth, SFTP $sftpBackend) {
+		$this
+			->setIdentifier('\OC\Files\Storage\SFTP_Key')
+			->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
+			->setText($l->t('SFTP with secret key login'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('Host'))),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
+			->setLegacyAuthMechanism($legacyAuth)
+			->deprecateTo($sftpBackend)
+		;
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/SMB.php b/apps/files_external/lib/Lib/Backend/SMB.php
new file mode 100644
index 00000000000..7ea30dd11bd
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/SMB.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\StorageConfig;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+use \OCA\Files_External\Lib\Auth\Password\Password;
+use OCP\IUser;
+
+class SMB extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, Password $legacyAuth) {
+		$this
+			->setIdentifier('smb')
+			->addIdentifierAlias('\OC\Files\Storage\SMB') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\SMB')
+			->setText($l->t('SMB / CIFS'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('Host'))),
+				(new DefinitionParameter('share', $l->t('Share'))),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('domain', $l->t('Domain')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->setLegacyAuthMechanism($legacyAuth)
+		;
+	}
+
+	/**
+	 * @param StorageConfig $storage
+	 * @param IUser $user
+	 */
+	public function manipulateStorageConfig(StorageConfig &$storage, IUser $user = null) {
+		$user = $storage->getBackendOption('user');
+		if ($domain = $storage->getBackendOption('domain')) {
+			$storage->setBackendOption('user', $domain.'\\'.$user);
+		}
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/SMB_OC.php b/apps/files_external/lib/Lib/Backend/SMB_OC.php
new file mode 100644
index 00000000000..c543a19bdd8
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/SMB_OC.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\Auth\Password\SessionCredentials;
+use \OCA\Files_External\Lib\StorageConfig;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+use \OCA\Files_External\Lib\Backend\SMB;
+use OCP\IUser;
+
+/**
+ * Deprecated SMB_OC class - use SMB with the password::sessioncredentials auth mechanism
+ */
+class SMB_OC extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, SessionCredentials $legacyAuth, SMB $smbBackend) {
+		$this
+			->setIdentifier('\OC\Files\Storage\SMB_OC')
+			->setStorageClass('\OCA\Files_External\Lib\Storage\SMB')
+			->setText($l->t('SMB / CIFS using OC login'))
+			->addParameters([
+				(new DefinitionParameter('host', $l->t('Host'))),
+				(new DefinitionParameter('username_as_share', $l->t('Username as share')))
+					->setType(DefinitionParameter::VALUE_BOOLEAN),
+				(new DefinitionParameter('share', $l->t('Share')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('root', $l->t('Remote subfolder')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+			])
+			->setPriority(BackendService::PRIORITY_DEFAULT - 10)
+			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+			->setLegacyAuthMechanism($legacyAuth)
+			->deprecateTo($smbBackend)
+		;
+	}
+
+	public function manipulateStorageConfig(StorageConfig &$storage, IUser $user = null) {
+		$username_as_share = ($storage->getBackendOption('username_as_share') === true);
+
+		if ($username_as_share) {
+			$share = '/' . $storage->getBackendOption('user');
+			$storage->setBackendOption('share', $share);
+		}
+	}
+
+}
diff --git a/apps/files_external/lib/Lib/Backend/Swift.php b/apps/files_external/lib/Lib/Backend/Swift.php
new file mode 100644
index 00000000000..58677575f52
--- /dev/null
+++ b/apps/files_external/lib/Lib/Backend/Swift.php
@@ -0,0 +1,62 @@
+<?php
+/**
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Backend;
+
+use \OCP\IL10N;
+use \OCA\Files_External\Lib\Backend\Backend;
+use \OCA\Files_External\Lib\DefinitionParameter;
+use \OCA\Files_External\Lib\Auth\AuthMechanism;
+use \OCA\Files_External\Service\BackendService;
+use \OCA\Files_External\Lib\Auth\OpenStack\OpenStack;
+use \OCA\Files_External\Lib\Auth\OpenStack\Rackspace;
+use \OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
+
+class Swift extends Backend {
+
+	use LegacyDependencyCheckPolyfill;
+
+	public function __construct(IL10N $l, OpenStack $openstackAuth, Rackspace $rackspaceAuth) {
+		$this
+			->setIdentifier('swift')
+			->addIdentifierAlias('\OC\Files\Storage\Swift') // legacy compat
+			->setStorageClass('\OCA\Files_External\Lib\Storage\Swift')
+			->setText($l->t('OpenStack Object Storage'))
+			->addParameters([
+				(new DefinitionParameter('service_name', $l->t('Service name')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('region', $l->t('Region')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+				(new DefinitionParameter('bucket', $l->t('Bucket'))),
+				(new DefinitionParameter('timeout', $l->t('Request timeout (seconds)')))
+					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+			])
+			->addAuthScheme(AuthMechanism::SCHEME_OPENSTACK)
+			->setLegacyAuthMechanismCallback(function(array $params) use ($openstackAuth, $rackspaceAuth) {
+				if (isset($params['options']['key']) && $params['options']['key']) {
+					return $rackspaceAuth;
+				}
+				return $openstackAuth;
+			})
+		;
+	}
+
+}