nextcloud / server

lib/private/GlobalScale/Config.php

Indentation +35 added lines, -35 removed lines

@@ -27,45 +27,45 @@
 
 class Config implements \OCP\GlobalScale\IConfig {
 
-	/** @var IConfig */
-	private $config;
+    /** @var IConfig */
+    private $config;
 
-	/**
-	 * Config constructor.
-	 *
-	 * @param IConfig $config
-	 */
-	public function __construct(IConfig $config) {
-		$this->config = $config;
-	}
+    /**
+     * Config constructor.
+     *
+     * @param IConfig $config
+     */
+    public function __construct(IConfig $config) {
+        $this->config = $config;
+    }
 
-	/**
-	 * check if global scale is enabled
-	 *
-	 * @since 12.0.1
-	 * @return bool
-	 */
-	public function isGlobalScaleEnabled() {
-		$enabled = $this->config->getSystemValue('gs.enabled', false);
-		return $enabled !== false;
-	}
+    /**
+     * check if global scale is enabled
+     *
+     * @since 12.0.1
+     * @return bool
+     */
+    public function isGlobalScaleEnabled() {
+        $enabled = $this->config->getSystemValue('gs.enabled', false);
+        return $enabled !== false;
+    }
 
-	/**
-	 * check if federation should only be used internally in a global scale setup
-	 *
-	 * @since 12.0.1
-	 * @return bool
-	 */
-	public function onlyInternalFederation() {
-		// if global scale is disabled federation works always globally
-		$gsEnabled = $this->isGlobalScaleEnabled();
-		if ($gsEnabled === false) {
-			return false;
-		}
+    /**
+     * check if federation should only be used internally in a global scale setup
+     *
+     * @since 12.0.1
+     * @return bool
+     */
+    public function onlyInternalFederation() {
+        // if global scale is disabled federation works always globally
+        $gsEnabled = $this->isGlobalScaleEnabled();
+        if ($gsEnabled === false) {
+            return false;
+        }
 
-		$enabled = $this->config->getSystemValue('gs.federation', 'internal');
+        $enabled = $this->config->getSystemValue('gs.federation', 'internal');
 
-		return $enabled === 'internal';
-	}
+        return $enabled === 'internal';
+    }
 
 }

lib/public/GlobalScale/IConfig.php

Indentation +14 added lines, -14 removed lines

@@ -32,20 +32,20 @@
  */
 interface IConfig {
 
-	/**
-	 * check if global scale is enabled
-	 *
-	 * @since 12.0.1
-	 * @return bool
-	 */
-	public function isGlobalScaleEnabled();
+    /**
+     * check if global scale is enabled
+     *
+     * @since 12.0.1
+     * @return bool
+     */
+    public function isGlobalScaleEnabled();
 
-	/**
-	 * check if federation should only be used internally in a global scale setup
-	 *
-	 * @since 12.0.1
-	 * @return bool
-	 */
-	public function onlyInternalFederation();
+    /**
+     * check if federation should only be used internally in a global scale setup
+     *
+     * @since 12.0.1
+     * @return bool
+     */
+    public function onlyInternalFederation();
 
 }

lib/public/Encryption/IEncryptionModule.php

Indentation +156 added lines, -156 removed lines

@@ -35,161 +35,161 @@
  */
 interface IEncryptionModule {
 
-	/**
-	 * @return string defining the technical unique id
-	 * @since 8.1.0
-	 */
-	public function getId();
-
-	/**
-	 * In comparison to getKey() this function returns a human readable (maybe translated) name
-	 *
-	 * @return string
-	 * @since 8.1.0
-	 */
-	public function getDisplayName();
-
-	/**
-	 * start receiving chunks from a file. This is the place where you can
-	 * perform some initial step before starting encrypting/decrypting the
-	 * chunks
-	 *
-	 * @param string $path to the file
-	 * @param string $user who read/write the file (null for public access)
-	 * @param string $mode php stream open mode
-	 * @param array $header contains the header data read from the file
-	 * @param array $accessList who has access to the file contains the key 'users' and 'public'
-	 *
-	 * $return array $header contain data as key-value pairs which should be
-	 *                       written to the header, in case of a write operation
-	 *                       or if no additional data is needed return a empty array
-	 * @since 8.1.0
-	 */
-	public function begin($path, $user, $mode, array $header, array $accessList);
-
-	/**
-	 * last chunk received. This is the place where you can perform some final
-	 * operation and return some remaining data if something is left in your
-	 * buffer.
-	 *
-	 * @param string $path to the file
-	 * @param string $position id of the last block (looks like "<Number>end")
-	 *
-	 * @return string remained data which should be written to the file in case
-	 *                of a write operation
-	 *
-	 * @since 8.1.0
-	 * @since 9.0.0 parameter $position added
-	 */
-	public function end($path, $position);
-
-	/**
-	 * encrypt data
-	 *
-	 * @param string $data you want to encrypt
-	 * @param string $position position of the block we want to encrypt (starts with '0')
-	 *
-	 * @return mixed encrypted data
-	 *
-	 * @since 8.1.0
-	 * @since 9.0.0 parameter $position added
-	 */
-	public function encrypt($data, $position);
-
-	/**
-	 * decrypt data
-	 *
-	 * @param string $data you want to decrypt
-	 * @param string $position position of the block we want to decrypt
-	 *
-	 * @return mixed decrypted data
-	 *
-	 * @since 8.1.0
-	 * @since 9.0.0 parameter $position added
-	 */
-	public function decrypt($data, $position);
-
-	/**
-	 * update encrypted file, e.g. give additional users access to the file
-	 *
-	 * @param string $path path to the file which should be updated
-	 * @param string $uid of the user who performs the operation
-	 * @param array $accessList who has access to the file contains the key 'users' and 'public'
-	 * @return boolean
-	 * @since 8.1.0
-	 */
-	public function update($path, $uid, array $accessList);
-
-	/**
-	 * should the file be encrypted or not
-	 *
-	 * @param string $path
-	 * @return boolean
-	 * @since 8.1.0
-	 */
-	public function shouldEncrypt($path);
-
-	/**
-	 * get size of the unencrypted payload per block.
-	 * ownCloud read/write files with a block size of 8192 byte
-	 *
-	 * @param bool $signed
-	 * @return int
-	 * @since 8.1.0 optional parameter $signed was added in 9.0.0
-	 */
-	public function getUnencryptedBlockSize($signed = false);
-
-	/**
-	 * check if the encryption module is able to read the file,
-	 * e.g. if all encryption keys exists
-	 *
-	 * @param string $path
-	 * @param string $uid user for whom we want to check if he can read the file
-	 * @return boolean
-	 * @since 8.1.0
-	 */
-	public function isReadable($path, $uid);
-
-	/**
-	 * Initial encryption of all files
-	 *
-	 * @param InputInterface $input
-	 * @param OutputInterface $output write some status information to the terminal during encryption
-	 * @since 8.2.0
-	 */
-	public function encryptAll(InputInterface $input, OutputInterface $output);
-
-	/**
-	 * prepare encryption module to decrypt all files
-	 *
-	 * @param InputInterface $input
-	 * @param OutputInterface $output write some status information to the terminal during encryption
-	 * @param $user (optional) for which the files should be decrypted, default = all users
-	 * @return bool return false on failure or if it isn't supported by the module
-	 * @since 8.2.0
-	 */
-	public function prepareDecryptAll(InputInterface $input, OutputInterface $output, $user = '');
-
-	/**
-	 * Check if the module is ready to be used by that specific user.
-	 * In case a module is not ready - because e.g. key pairs have not been generated
-	 * upon login this method can return false before any operation starts and might
-	 * cause issues during operations.
-	 *
-	 * @param string $user
-	 * @return boolean
-	 * @since 9.1.0
-	 */
-	public function isReadyForUser($user);
-
-	/**
-	 * Does the encryption module needs a detailed list of users with access to the file?
-	 * For example if the encryption module uses per-user encryption keys and needs to know
-	 * the users with access to the file to encrypt/decrypt it.
-	 *
-	 * @since 13.0.0
-	 * @return bool
-	 */
-	public function needDetailedAccessList();
+    /**
+     * @return string defining the technical unique id
+     * @since 8.1.0
+     */
+    public function getId();
+
+    /**
+     * In comparison to getKey() this function returns a human readable (maybe translated) name
+     *
+     * @return string
+     * @since 8.1.0
+     */
+    public function getDisplayName();
+
+    /**
+     * start receiving chunks from a file. This is the place where you can
+     * perform some initial step before starting encrypting/decrypting the
+     * chunks
+     *
+     * @param string $path to the file
+     * @param string $user who read/write the file (null for public access)
+     * @param string $mode php stream open mode
+     * @param array $header contains the header data read from the file
+     * @param array $accessList who has access to the file contains the key 'users' and 'public'
+     *
+     * $return array $header contain data as key-value pairs which should be
+     *                       written to the header, in case of a write operation
+     *                       or if no additional data is needed return a empty array
+     * @since 8.1.0
+     */
+    public function begin($path, $user, $mode, array $header, array $accessList);
+
+    /**
+     * last chunk received. This is the place where you can perform some final
+     * operation and return some remaining data if something is left in your
+     * buffer.
+     *
+     * @param string $path to the file
+     * @param string $position id of the last block (looks like "<Number>end")
+     *
+     * @return string remained data which should be written to the file in case
+     *                of a write operation
+     *
+     * @since 8.1.0
+     * @since 9.0.0 parameter $position added
+     */
+    public function end($path, $position);
+
+    /**
+     * encrypt data
+     *
+     * @param string $data you want to encrypt
+     * @param string $position position of the block we want to encrypt (starts with '0')
+     *
+     * @return mixed encrypted data
+     *
+     * @since 8.1.0
+     * @since 9.0.0 parameter $position added
+     */
+    public function encrypt($data, $position);
+
+    /**
+     * decrypt data
+     *
+     * @param string $data you want to decrypt
+     * @param string $position position of the block we want to decrypt
+     *
+     * @return mixed decrypted data
+     *
+     * @since 8.1.0
+     * @since 9.0.0 parameter $position added
+     */
+    public function decrypt($data, $position);
+
+    /**
+     * update encrypted file, e.g. give additional users access to the file
+     *
+     * @param string $path path to the file which should be updated
+     * @param string $uid of the user who performs the operation
+     * @param array $accessList who has access to the file contains the key 'users' and 'public'
+     * @return boolean
+     * @since 8.1.0
+     */
+    public function update($path, $uid, array $accessList);
+
+    /**
+     * should the file be encrypted or not
+     *
+     * @param string $path
+     * @return boolean
+     * @since 8.1.0
+     */
+    public function shouldEncrypt($path);
+
+    /**
+     * get size of the unencrypted payload per block.
+     * ownCloud read/write files with a block size of 8192 byte
+     *
+     * @param bool $signed
+     * @return int
+     * @since 8.1.0 optional parameter $signed was added in 9.0.0
+     */
+    public function getUnencryptedBlockSize($signed = false);
+
+    /**
+     * check if the encryption module is able to read the file,
+     * e.g. if all encryption keys exists
+     *
+     * @param string $path
+     * @param string $uid user for whom we want to check if he can read the file
+     * @return boolean
+     * @since 8.1.0
+     */
+    public function isReadable($path, $uid);
+
+    /**
+     * Initial encryption of all files
+     *
+     * @param InputInterface $input
+     * @param OutputInterface $output write some status information to the terminal during encryption
+     * @since 8.2.0
+     */
+    public function encryptAll(InputInterface $input, OutputInterface $output);
+
+    /**
+     * prepare encryption module to decrypt all files
+     *
+     * @param InputInterface $input
+     * @param OutputInterface $output write some status information to the terminal during encryption
+     * @param $user (optional) for which the files should be decrypted, default = all users
+     * @return bool return false on failure or if it isn't supported by the module
+     * @since 8.2.0
+     */
+    public function prepareDecryptAll(InputInterface $input, OutputInterface $output, $user = '');
+
+    /**
+     * Check if the module is ready to be used by that specific user.
+     * In case a module is not ready - because e.g. key pairs have not been generated
+     * upon login this method can return false before any operation starts and might
+     * cause issues during operations.
+     *
+     * @param string $user
+     * @return boolean
+     * @since 9.1.0
+     */
+    public function isReadyForUser($user);
+
+    /**
+     * Does the encryption module needs a detailed list of users with access to the file?
+     * For example if the encryption module uses per-user encryption keys and needs to know
+     * the users with access to the file to encrypt/decrypt it.
+     *
+     * @since 13.0.0
+     * @return bool
+     */
+    public function needDetailedAccessList();
 
 }

lib/private/Encryption/Update.php

Indentation +157 added lines, -157 removed lines

@@ -33,162 +33,162 @@
  */
 class Update {
 
-	/** @var \OC\Files\View */
-	protected $view;
-
-	/** @var \OC\Encryption\Util */
-	protected $util;
-
-	 /** @var \OC\Files\Mount\Manager */
-	protected $mountManager;
-
-	/** @var \OC\Encryption\Manager */
-	protected $encryptionManager;
-
-	/** @var string */
-	protected $uid;
-
-	/** @var \OC\Encryption\File */
-	protected $file;
-
-	/**
-	 *
-	 * @param \OC\Files\View $view
-	 * @param \OC\Encryption\Util $util
-	 * @param \OC\Files\Mount\Manager $mountManager
-	 * @param \OC\Encryption\Manager $encryptionManager
-	 * @param \OC\Encryption\File $file
-	 * @param string $uid
-	 */
-	public function __construct(
-			View $view,
-			Util $util,
-			Mount\Manager $mountManager,
-			Manager $encryptionManager,
-			File $file,
-			$uid
-		) {
-
-		$this->view = $view;
-		$this->util = $util;
-		$this->mountManager = $mountManager;
-		$this->encryptionManager = $encryptionManager;
-		$this->file = $file;
-		$this->uid = $uid;
-	}
-
-	/**
-	 * hook after file was shared
-	 *
-	 * @param array $params
-	 */
-	public function postShared($params) {
-		if ($this->encryptionManager->isEnabled()) {
-			if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
-				$path = Filesystem::getPath($params['fileSource']);
-				list($owner, $ownerPath) = $this->getOwnerPath($path);
-				$absPath = '/' . $owner . '/files/' . $ownerPath;
-				$this->update($absPath);
-			}
-		}
-	}
-
-	/**
-	 * hook after file was unshared
-	 *
-	 * @param array $params
-	 */
-	public function postUnshared($params) {
-		if ($this->encryptionManager->isEnabled()) {
-			if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
-				$path = Filesystem::getPath($params['fileSource']);
-				list($owner, $ownerPath) = $this->getOwnerPath($path);
-				$absPath = '/' . $owner . '/files/' . $ownerPath;
-				$this->update($absPath);
-			}
-		}
-	}
-
-	/**
-	 * inform encryption module that a file was restored from the trash bin,
-	 * e.g. to update the encryption keys
-	 *
-	 * @param array $params
-	 */
-	public function postRestore($params) {
-		if ($this->encryptionManager->isEnabled()) {
-			$path = Filesystem::normalizePath('/' . $this->uid . '/files/' . $params['filePath']);
-			$this->update($path);
-		}
-	}
-
-	/**
-	 * inform encryption module that a file was renamed,
-	 * e.g. to update the encryption keys
-	 *
-	 * @param array $params
-	 */
-	public function postRename($params) {
-		$source = $params['oldpath'];
-		$target = $params['newpath'];
-		if(
-			$this->encryptionManager->isEnabled() &&
-			dirname($source) !== dirname($target)
-		) {
-				list($owner, $ownerPath) = $this->getOwnerPath($target);
-				$absPath = '/' . $owner . '/files/' . $ownerPath;
-				$this->update($absPath);
-		}
-	}
-
-	/**
-	 * get owner and path relative to data/<owner>/files
-	 *
-	 * @param string $path path to file for current user
-	 * @return array ['owner' => $owner, 'path' => $path]
-	 * @throw \InvalidArgumentException
-	 */
-	protected function getOwnerPath($path) {
-		$info = Filesystem::getFileInfo($path);
-		$owner = Filesystem::getOwner($path);
-		$view = new View('/' . $owner . '/files');
-		$path = $view->getPath($info->getId());
-		if ($path === null) {
-			throw new \InvalidArgumentException('No file found for ' . $info->getId());
-		}
-
-		return array($owner, $path);
-	}
-
-	/**
-	 * notify encryption module about added/removed users from a file/folder
-	 *
-	 * @param string $path relative to data/
-	 * @throws Exceptions\ModuleDoesNotExistsException
-	 */
-	public function update($path) {
-
-		$encryptionModule = $this->encryptionManager->getEncryptionModule();
-
-		// if the encryption module doesn't encrypt the files on a per-user basis
-		// we have nothing to do here.
-		if ($encryptionModule->needDetailedAccessList() === false) {
-			return;
-		}
-
-		// if a folder was shared, get a list of all (sub-)folders
-		if ($this->view->is_dir($path)) {
-			$allFiles = $this->util->getAllFiles($path);
-		} else {
-			$allFiles = array($path);
-		}
-
-
-
-		foreach ($allFiles as $file) {
-			$usersSharing = $this->file->getAccessList($file);
-			$encryptionModule->update($file, $this->uid, $usersSharing);
-		}
-	}
+    /** @var \OC\Files\View */
+    protected $view;
+
+    /** @var \OC\Encryption\Util */
+    protected $util;
+
+        /** @var \OC\Files\Mount\Manager */
+    protected $mountManager;
+
+    /** @var \OC\Encryption\Manager */
+    protected $encryptionManager;
+
+    /** @var string */
+    protected $uid;
+
+    /** @var \OC\Encryption\File */
+    protected $file;
+
+    /**
+     *
+     * @param \OC\Files\View $view
+     * @param \OC\Encryption\Util $util
+     * @param \OC\Files\Mount\Manager $mountManager
+     * @param \OC\Encryption\Manager $encryptionManager
+     * @param \OC\Encryption\File $file
+     * @param string $uid
+     */
+    public function __construct(
+            View $view,
+            Util $util,
+            Mount\Manager $mountManager,
+            Manager $encryptionManager,
+            File $file,
+            $uid
+        ) {
+
+        $this->view = $view;
+        $this->util = $util;
+        $this->mountManager = $mountManager;
+        $this->encryptionManager = $encryptionManager;
+        $this->file = $file;
+        $this->uid = $uid;
+    }
+
+    /**
+     * hook after file was shared
+     *
+     * @param array $params
+     */
+    public function postShared($params) {
+        if ($this->encryptionManager->isEnabled()) {
+            if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
+                $path = Filesystem::getPath($params['fileSource']);
+                list($owner, $ownerPath) = $this->getOwnerPath($path);
+                $absPath = '/' . $owner . '/files/' . $ownerPath;
+                $this->update($absPath);
+            }
+        }
+    }
+
+    /**
+     * hook after file was unshared
+     *
+     * @param array $params
+     */
+    public function postUnshared($params) {
+        if ($this->encryptionManager->isEnabled()) {
+            if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
+                $path = Filesystem::getPath($params['fileSource']);
+                list($owner, $ownerPath) = $this->getOwnerPath($path);
+                $absPath = '/' . $owner . '/files/' . $ownerPath;
+                $this->update($absPath);
+            }
+        }
+    }
+
+    /**
+     * inform encryption module that a file was restored from the trash bin,
+     * e.g. to update the encryption keys
+     *
+     * @param array $params
+     */
+    public function postRestore($params) {
+        if ($this->encryptionManager->isEnabled()) {
+            $path = Filesystem::normalizePath('/' . $this->uid . '/files/' . $params['filePath']);
+            $this->update($path);
+        }
+    }
+
+    /**
+     * inform encryption module that a file was renamed,
+     * e.g. to update the encryption keys
+     *
+     * @param array $params
+     */
+    public function postRename($params) {
+        $source = $params['oldpath'];
+        $target = $params['newpath'];
+        if(
+            $this->encryptionManager->isEnabled() &&
+            dirname($source) !== dirname($target)
+        ) {
+                list($owner, $ownerPath) = $this->getOwnerPath($target);
+                $absPath = '/' . $owner . '/files/' . $ownerPath;
+                $this->update($absPath);
+        }
+    }
+
+    /**
+     * get owner and path relative to data/<owner>/files
+     *
+     * @param string $path path to file for current user
+     * @return array ['owner' => $owner, 'path' => $path]
+     * @throw \InvalidArgumentException
+     */
+    protected function getOwnerPath($path) {
+        $info = Filesystem::getFileInfo($path);
+        $owner = Filesystem::getOwner($path);
+        $view = new View('/' . $owner . '/files');
+        $path = $view->getPath($info->getId());
+        if ($path === null) {
+            throw new \InvalidArgumentException('No file found for ' . $info->getId());
+        }
+
+        return array($owner, $path);
+    }
+
+    /**
+     * notify encryption module about added/removed users from a file/folder
+     *
+     * @param string $path relative to data/
+     * @throws Exceptions\ModuleDoesNotExistsException
+     */
+    public function update($path) {
+
+        $encryptionModule = $this->encryptionManager->getEncryptionModule();
+
+        // if the encryption module doesn't encrypt the files on a per-user basis
+        // we have nothing to do here.
+        if ($encryptionModule->needDetailedAccessList() === false) {
+            return;
+        }
+
+        // if a folder was shared, get a list of all (sub-)folders
+        if ($this->view->is_dir($path)) {
+            $allFiles = $this->util->getAllFiles($path);
+        } else {
+            $allFiles = array($path);
+        }
+
+
+
+        foreach ($allFiles as $file) {
+            $usersSharing = $this->file->getAccessList($file);
+            $encryptionModule->update($file, $this->uid, $usersSharing);
+        }
+    }
 
 }

apps/encryption/lib/Migration/SetMasterKeyStatus.php

Indentation +32 added lines, -32 removed lines

@@ -35,43 +35,43 @@
 class SetMasterKeyStatus implements IRepairStep {
 
 
-	/** @var  IConfig */
-	private $config;
+    /** @var  IConfig */
+    private $config;
 
 
-	public function __construct(IConfig $config) {
-		$this->config = $config;
-	}
+    public function __construct(IConfig $config) {
+        $this->config = $config;
+    }
 
-	/**
-	 * Returns the step's name
-	 *
-	 * @return string
-	 * @since 9.1.0
-	 */
-	public function getName() {
-		return 'Write default encryption module configuration to the database';
-	}
+    /**
+     * Returns the step's name
+     *
+     * @return string
+     * @since 9.1.0
+     */
+    public function getName() {
+        return 'Write default encryption module configuration to the database';
+    }
 
-	/**
-	 * @param IOutput $output
-	 */
-	public function run(IOutput $output) {
-		if (!$this->shouldRun()) {
-			return;
-		}
+    /**
+     * @param IOutput $output
+     */
+    public function run(IOutput $output) {
+        if (!$this->shouldRun()) {
+            return;
+        }
 
-		// if no config for the master key is set we set it explicitly to '0' in
-		// order not to break old installations because the default changed to '1'.
-		$configAlreadySet = $this->config->getAppValue('encryption', 'useMasterKey', false);
-		if ($configAlreadySet === false) {
-			$this->config->setAppValue('encryption', 'useMasterKey', '0');
-		}
-	}
+        // if no config for the master key is set we set it explicitly to '0' in
+        // order not to break old installations because the default changed to '1'.
+        $configAlreadySet = $this->config->getAppValue('encryption', 'useMasterKey', false);
+        if ($configAlreadySet === false) {
+            $this->config->setAppValue('encryption', 'useMasterKey', '0');
+        }
+    }
 
-	protected function shouldRun() {
-		$appVersion = $this->config->getAppValue('encryption', 'installed_version', '0.0.0');
-		return version_compare($appVersion, '2.0.0', '<');
-	}
+    protected function shouldRun() {
+        $appVersion = $this->config->getAppValue('encryption', 'installed_version', '0.0.0');
+        return version_compare($appVersion, '2.0.0', '<');
+    }
 
 }

apps/encryption/lib/Command/DisableMasterKey.php

Indentation +52 added lines, -52 removed lines

@@ -33,57 +33,57 @@
 
 class DisableMasterKey extends Command {
 
-	/** @var Util */
-	protected $util;
-
-	/** @var IConfig */
-	protected $config;
-
-	/** @var  QuestionHelper */
-	protected $questionHelper;
-
-	/**
-	 * @param Util $util
-	 * @param IConfig $config
-	 * @param QuestionHelper $questionHelper
-	 */
-	public function __construct(Util $util,
-								IConfig $config,
-								QuestionHelper $questionHelper) {
-
-		$this->util = $util;
-		$this->config = $config;
-		$this->questionHelper = $questionHelper;
-		parent::__construct();
-	}
-
-	protected function configure() {
-		$this
-			->setName('encryption:disable-master-key')
-			->setDescription('Disable the master key and use per-user keys instead. Only available for fresh installations with no existing encrypted data! There is no way to enable it again.');
-	}
-
-	protected function execute(InputInterface $input, OutputInterface $output) {
-
-		$isMasterKeyEnabled = $this->util->isMasterKeyEnabled();
-
-		if(!$isMasterKeyEnabled) {
-			$output->writeln('Master key already disabled');
-		} else {
-			$question = new ConfirmationQuestion(
-				'Warning: Only perform this operation for a fresh installations with no existing encrypted data! '
-				. 'There is no way to enable the master key again. '
-				. 'We strongly recommend to keep the master key, it provides significant performance improvements '
-				. 'and is easier to handle for both, users and administrators. '
-				. 'Do you really want to switch to per-user keys? (y/n) ', false);
-			if ($this->questionHelper->ask($input, $output, $question)) {
-				$this->config->setAppValue('encryption', 'useMasterKey', '0');
-				$output->writeln('Master key successfully disabled.');
-			} else {
-				$output->writeln('aborted.');
-			}
-		}
-
-	}
+    /** @var Util */
+    protected $util;
+
+    /** @var IConfig */
+    protected $config;
+
+    /** @var  QuestionHelper */
+    protected $questionHelper;
+
+    /**
+     * @param Util $util
+     * @param IConfig $config
+     * @param QuestionHelper $questionHelper
+     */
+    public function __construct(Util $util,
+                                IConfig $config,
+                                QuestionHelper $questionHelper) {
+
+        $this->util = $util;
+        $this->config = $config;
+        $this->questionHelper = $questionHelper;
+        parent::__construct();
+    }
+
+    protected function configure() {
+        $this
+            ->setName('encryption:disable-master-key')
+            ->setDescription('Disable the master key and use per-user keys instead. Only available for fresh installations with no existing encrypted data! There is no way to enable it again.');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) {
+
+        $isMasterKeyEnabled = $this->util->isMasterKeyEnabled();
+
+        if(!$isMasterKeyEnabled) {
+            $output->writeln('Master key already disabled');
+        } else {
+            $question = new ConfirmationQuestion(
+                'Warning: Only perform this operation for a fresh installations with no existing encrypted data! '
+                . 'There is no way to enable the master key again. '
+                . 'We strongly recommend to keep the master key, it provides significant performance improvements '
+                . 'and is easier to handle for both, users and administrators. '
+                . 'Do you really want to switch to per-user keys? (y/n) ', false);
+            if ($this->questionHelper->ask($input, $output, $question)) {
+                $this->config->setAppValue('encryption', 'useMasterKey', '0');
+                $output->writeln('Master key successfully disabled.');
+            } else {
+                $output->writeln('aborted.');
+            }
+        }
+
+    }
 
 }

apps/files_external/lib/Settings/Personal.php

Indentation +57 added lines, -57 removed lines

@@ -32,72 +32,72 @@
 
 class Personal implements ISettings {
 
-	/** @var IManager */
-	private $encryptionManager;
+    /** @var IManager */
+    private $encryptionManager;
 
-	/** @var UserGlobalStoragesService */
-	private $userGlobalStoragesService;
+    /** @var UserGlobalStoragesService */
+    private $userGlobalStoragesService;
 
-	/** @var BackendService */
-	private $backendService;
+    /** @var BackendService */
+    private $backendService;
 
-	/** @var GlobalAuth	 */
-	private $globalAuth;
+    /** @var GlobalAuth	 */
+    private $globalAuth;
 
-	/** @var IUserSession */
-	private $userSession;
+    /** @var IUserSession */
+    private $userSession;
 
-	public function __construct(
-		IManager $encryptionManager,
-		UserGlobalStoragesService $userGlobalStoragesService,
-		BackendService $backendService,
-		GlobalAuth $globalAuth,
-		IUserSession $userSession
-	) {
-		$this->encryptionManager = $encryptionManager;
-		$this->userGlobalStoragesService = $userGlobalStoragesService;
-		$this->backendService = $backendService;
-		$this->globalAuth = $globalAuth;
-		$this->userSession = $userSession;
-	}
+    public function __construct(
+        IManager $encryptionManager,
+        UserGlobalStoragesService $userGlobalStoragesService,
+        BackendService $backendService,
+        GlobalAuth $globalAuth,
+        IUserSession $userSession
+    ) {
+        $this->encryptionManager = $encryptionManager;
+        $this->userGlobalStoragesService = $userGlobalStoragesService;
+        $this->backendService = $backendService;
+        $this->globalAuth = $globalAuth;
+        $this->userSession = $userSession;
+    }
 
-	/**
-	 * @return TemplateResponse
-	 */
-	public function getForm() {
-		$uid = $this->userSession->getUser()->getUID();
+    /**
+     * @return TemplateResponse
+     */
+    public function getForm() {
+        $uid = $this->userSession->getUser()->getUID();
 
-		$parameters = [
-			'encryptionEnabled'    => $this->encryptionManager->isEnabled(),
-			'visibilityType'       => BackendService::VISIBILITY_PERSONAL,
-			'storages'             => $this->userGlobalStoragesService->getStorages(),
-			'backends'             => $this->backendService->getAvailableBackends(),
-			'authMechanisms'       => $this->backendService->getAuthMechanisms(),
-			'dependencies'         => \OC_Mount_Config::dependencyMessage($this->backendService->getBackends()),
-			'allowUserMounting'    => $this->backendService->isUserMountingAllowed(),
-			'globalCredentials'    => $this->globalAuth->getAuth($uid),
-			'globalCredentialsUid' => $uid,
-		];
+        $parameters = [
+            'encryptionEnabled'    => $this->encryptionManager->isEnabled(),
+            'visibilityType'       => BackendService::VISIBILITY_PERSONAL,
+            'storages'             => $this->userGlobalStoragesService->getStorages(),
+            'backends'             => $this->backendService->getAvailableBackends(),
+            'authMechanisms'       => $this->backendService->getAuthMechanisms(),
+            'dependencies'         => \OC_Mount_Config::dependencyMessage($this->backendService->getBackends()),
+            'allowUserMounting'    => $this->backendService->isUserMountingAllowed(),
+            'globalCredentials'    => $this->globalAuth->getAuth($uid),
+            'globalCredentialsUid' => $uid,
+        ];
 
-		return new TemplateResponse('files_external', 'settings', $parameters, '');
-	}
+        return new TemplateResponse('files_external', 'settings', $parameters, '');
+    }
 
-	/**
-	 * @return string the section ID, e.g. 'sharing'
-	 */
-	public function getSection() {
-		return 'externalstorages';
-	}
+    /**
+     * @return string the section ID, e.g. 'sharing'
+     */
+    public function getSection() {
+        return 'externalstorages';
+    }
 
-	/**
-	 * @return int whether the form should be rather on the top or bottom of
-	 * the admin section. The forms are arranged in ascending order of the
-	 * priority values. It is required to return a value between 0 and 100.
-	 *
-	 * E.g.: 70
-	 */
-	public function getPriority() {
-		return 40;
-	}
+    /**
+     * @return int whether the form should be rather on the top or bottom of
+     * the admin section. The forms are arranged in ascending order of the
+     * priority values. It is required to return a value between 0 and 100.
+     *
+     * E.g.: 70
+     */
+    public function getPriority() {
+        return 40;
+    }
 
 }

lib/private/DB/OracleConnection.php

Indentation +71 added lines, -71 removed lines

@@ -26,80 +26,80 @@
 namespace OC\DB;
 
 class OracleConnection extends Connection {
-	/**
-	 * Quote the keys of the array
-	 */
-	private function quoteKeys(array $data) {
-		$return = [];
-		$c = $this->getDatabasePlatform()->getIdentifierQuoteCharacter();
-		foreach($data as $key => $value) {
-			if ($key[0] !== $c) {
-				$return[$this->quoteIdentifier($key)] = $value;
-			} else {
-				$return[$key] = $value;
-			}
-		}
-		return $return;
-	}
+    /**
+     * Quote the keys of the array
+     */
+    private function quoteKeys(array $data) {
+        $return = [];
+        $c = $this->getDatabasePlatform()->getIdentifierQuoteCharacter();
+        foreach($data as $key => $value) {
+            if ($key[0] !== $c) {
+                $return[$this->quoteIdentifier($key)] = $value;
+            } else {
+                $return[$key] = $value;
+            }
+        }
+        return $return;
+    }
 
-	/**
-	 * {@inheritDoc}
-	 */
-	public function insert($tableName, array $data, array $types = array()) {
-		if ($tableName[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
-			$tableName = $this->quoteIdentifier($tableName);
-		}
-		$data = $this->quoteKeys($data);
-		return parent::insert($tableName, $data, $types);
-	}
+    /**
+     * {@inheritDoc}
+     */
+    public function insert($tableName, array $data, array $types = array()) {
+        if ($tableName[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
+            $tableName = $this->quoteIdentifier($tableName);
+        }
+        $data = $this->quoteKeys($data);
+        return parent::insert($tableName, $data, $types);
+    }
 
-	/**
-	 * {@inheritDoc}
-	 */
-	public function update($tableName, array $data, array $identifier, array $types = array()) {
-		if ($tableName[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
-			$tableName = $this->quoteIdentifier($tableName);
-		}
-		$data = $this->quoteKeys($data);
-		$identifier = $this->quoteKeys($identifier);
-		return parent::update($tableName, $data, $identifier, $types);
-	}
+    /**
+     * {@inheritDoc}
+     */
+    public function update($tableName, array $data, array $identifier, array $types = array()) {
+        if ($tableName[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
+            $tableName = $this->quoteIdentifier($tableName);
+        }
+        $data = $this->quoteKeys($data);
+        $identifier = $this->quoteKeys($identifier);
+        return parent::update($tableName, $data, $identifier, $types);
+    }
 
-	/**
-	 * {@inheritDoc}
-	 */
-	public function delete($tableExpression, array $identifier, array $types = array()) {
-		if ($tableExpression[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
-			$tableExpression = $this->quoteIdentifier($tableExpression);
-		}
-		$identifier = $this->quoteKeys($identifier);
-		return parent::delete($tableExpression, $identifier);
-	}
+    /**
+     * {@inheritDoc}
+     */
+    public function delete($tableExpression, array $identifier, array $types = array()) {
+        if ($tableExpression[0] !== $this->getDatabasePlatform()->getIdentifierQuoteCharacter()) {
+            $tableExpression = $this->quoteIdentifier($tableExpression);
+        }
+        $identifier = $this->quoteKeys($identifier);
+        return parent::delete($tableExpression, $identifier);
+    }
 
-	/**
-	 * Drop a table from the database if it exists
-	 *
-	 * @param string $table table name without the prefix
-	 */
-	public function dropTable($table) {
-		$table = $this->tablePrefix . trim($table);
-		$table = $this->quoteIdentifier($table);
-		$schema = $this->getSchemaManager();
-		if($schema->tablesExist(array($table))) {
-			$schema->dropTable($table);
-		}
-	}
+    /**
+     * Drop a table from the database if it exists
+     *
+     * @param string $table table name without the prefix
+     */
+    public function dropTable($table) {
+        $table = $this->tablePrefix . trim($table);
+        $table = $this->quoteIdentifier($table);
+        $schema = $this->getSchemaManager();
+        if($schema->tablesExist(array($table))) {
+            $schema->dropTable($table);
+        }
+    }
 
-	/**
-	 * Check if a table exists
-	 *
-	 * @param string $table table name without the prefix
-	 * @return bool
-	 */
-	public function tableExists($table){
-		$table = $this->tablePrefix . trim($table);
-		$table = $this->quoteIdentifier($table);
-		$schema = $this->getSchemaManager();
-		return $schema->tablesExist(array($table));
-	}
+    /**
+     * Check if a table exists
+     *
+     * @param string $table table name without the prefix
+     * @return bool
+     */
+    public function tableExists($table){
+        $table = $this->tablePrefix . trim($table);
+        $table = $this->quoteIdentifier($table);
+        $schema = $this->getSchemaManager();
+        return $schema->tablesExist(array($table));
+    }
 }

lib/private/DB/Migrator.php

Indentation +268 added lines, -268 removed lines

@@ -43,272 +43,272 @@
 
 class Migrator {
 
-	/** @var \Doctrine\DBAL\Connection */
-	protected $connection;
-
-	/** @var ISecureRandom */
-	private $random;
-
-	/** @var IConfig */
-	protected $config;
-
-	/** @var EventDispatcher  */
-	private $dispatcher;
-
-	/** @var bool */
-	private $noEmit = false;
-
-	/**
-	 * @param \Doctrine\DBAL\Connection|Connection $connection
-	 * @param ISecureRandom $random
-	 * @param IConfig $config
-	 * @param EventDispatcher $dispatcher
-	 */
-	public function __construct(\Doctrine\DBAL\Connection $connection,
-								ISecureRandom $random,
-								IConfig $config,
-								EventDispatcher $dispatcher = null) {
-		$this->connection = $connection;
-		$this->random = $random;
-		$this->config = $config;
-		$this->dispatcher = $dispatcher;
-	}
-
-	/**
-	 * @param \Doctrine\DBAL\Schema\Schema $targetSchema
-	 */
-	public function migrate(Schema $targetSchema) {
-		$this->noEmit = true;
-		$this->applySchema($targetSchema);
-	}
-
-	/**
-	 * @param \Doctrine\DBAL\Schema\Schema $targetSchema
-	 * @return string
-	 */
-	public function generateChangeScript(Schema $targetSchema) {
-		$schemaDiff = $this->getDiff($targetSchema, $this->connection);
-
-		$script = '';
-		$sqls = $schemaDiff->toSql($this->connection->getDatabasePlatform());
-		foreach ($sqls as $sql) {
-			$script .= $this->convertStatementToScript($sql);
-		}
-
-		return $script;
-	}
-
-	/**
-	 * @param Schema $targetSchema
-	 * @throws \OC\DB\MigrationException
-	 */
-	public function checkMigrate(Schema $targetSchema) {
-		$this->noEmit = true;
-		/**@var \Doctrine\DBAL\Schema\Table[] $tables */
-		$tables = $targetSchema->getTables();
-		$filterExpression = $this->getFilterExpression();
-		$this->connection->getConfiguration()->
-			setFilterSchemaAssetsExpression($filterExpression);
-		$existingTables = $this->connection->getSchemaManager()->listTableNames();
-
-		$step = 0;
-		foreach ($tables as $table) {
-			if (strpos($table->getName(), '.')) {
-				list(, $tableName) = explode('.', $table->getName());
-			} else {
-				$tableName = $table->getName();
-			}
-			$this->emitCheckStep($tableName, $step++, count($tables));
-			// don't need to check for new tables
-			if (array_search($tableName, $existingTables) !== false) {
-				$this->checkTableMigrate($table);
-			}
-		}
-	}
-
-	/**
-	 * Create a unique name for the temporary table
-	 *
-	 * @param string $name
-	 * @return string
-	 */
-	protected function generateTemporaryTableName($name) {
-		return $this->config->getSystemValue('dbtableprefix', 'oc_') . $name . '_' . $this->random->generate(13, ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
-	}
-
-	/**
-	 * Check the migration of a table on a copy so we can detect errors before messing with the real table
-	 *
-	 * @param \Doctrine\DBAL\Schema\Table $table
-	 * @throws \OC\DB\MigrationException
-	 */
-	protected function checkTableMigrate(Table $table) {
-		$name = $table->getName();
-		$tmpName = $this->generateTemporaryTableName($name);
-
-		$this->copyTable($name, $tmpName);
-
-		//create the migration schema for the temporary table
-		$tmpTable = $this->renameTableSchema($table, $tmpName);
-		$schemaConfig = new SchemaConfig();
-		$schemaConfig->setName($this->connection->getDatabase());
-		$schema = new Schema(array($tmpTable), array(), $schemaConfig);
-
-		try {
-			$this->applySchema($schema);
-			$this->dropTable($tmpName);
-		} catch (DBALException $e) {
-			// pgsql needs to commit it's failed transaction before doing anything else
-			if ($this->connection->isTransactionActive()) {
-				$this->connection->commit();
-			}
-			$this->dropTable($tmpName);
-			throw new MigrationException($table->getName(), $e->getMessage());
-		}
-	}
-
-	/**
-	 * @param \Doctrine\DBAL\Schema\Table $table
-	 * @param string $newName
-	 * @return \Doctrine\DBAL\Schema\Table
-	 */
-	protected function renameTableSchema(Table $table, $newName) {
-		/**
-		 * @var \Doctrine\DBAL\Schema\Index[] $indexes
-		 */
-		$indexes = $table->getIndexes();
-		$newIndexes = array();
-		foreach ($indexes as $index) {
-			if ($index->isPrimary()) {
-				// do not rename primary key
-				$indexName = $index->getName();
-			} else {
-				// avoid conflicts in index names
-				$indexName = $this->config->getSystemValue('dbtableprefix', 'oc_') . $this->random->generate(13, ISecureRandom::CHAR_LOWER);
-			}
-			$newIndexes[] = new Index($indexName, $index->getColumns(), $index->isUnique(), $index->isPrimary());
-		}
-
-		// foreign keys are not supported so we just set it to an empty array
-		return new Table($newName, $table->getColumns(), $newIndexes, array(), 0, $table->getOptions());
-	}
-
-	public function createSchema() {
-		$filterExpression = $this->getFilterExpression();
-		$this->connection->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
-		return $this->connection->getSchemaManager()->createSchema();
-	}
-
-	/**
-	 * @param Schema $targetSchema
-	 * @param \Doctrine\DBAL\Connection $connection
-	 * @return \Doctrine\DBAL\Schema\SchemaDiff
-	 * @throws DBALException
-	 */
-	protected function getDiff(Schema $targetSchema, \Doctrine\DBAL\Connection $connection) {
-		// adjust varchar columns with a length higher then getVarcharMaxLength to clob
-		foreach ($targetSchema->getTables() as $table) {
-			foreach ($table->getColumns() as $column) {
-				if ($column->getType() instanceof StringType) {
-					if ($column->getLength() > $connection->getDatabasePlatform()->getVarcharMaxLength()) {
-						$column->setType(Type::getType('text'));
-						$column->setLength(null);
-					}
-				}
-			}
-		}
-
-		$filterExpression = $this->getFilterExpression();
-		$this->connection->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
-		$sourceSchema = $connection->getSchemaManager()->createSchema();
-
-		// remove tables we don't know about
-		/** @var $table \Doctrine\DBAL\Schema\Table */
-		foreach ($sourceSchema->getTables() as $table) {
-			if (!$targetSchema->hasTable($table->getName())) {
-				$sourceSchema->dropTable($table->getName());
-			}
-		}
-		// remove sequences we don't know about
-		foreach ($sourceSchema->getSequences() as $table) {
-			if (!$targetSchema->hasSequence($table->getName())) {
-				$sourceSchema->dropSequence($table->getName());
-			}
-		}
-
-		$comparator = new Comparator();
-		return $comparator->compare($sourceSchema, $targetSchema);
-	}
-
-	/**
-	 * @param \Doctrine\DBAL\Schema\Schema $targetSchema
-	 * @param \Doctrine\DBAL\Connection $connection
-	 */
-	protected function applySchema(Schema $targetSchema, \Doctrine\DBAL\Connection $connection = null) {
-		if (is_null($connection)) {
-			$connection = $this->connection;
-		}
-
-		$schemaDiff = $this->getDiff($targetSchema, $connection);
-
-		$connection->beginTransaction();
-		$sqls = $schemaDiff->toSql($connection->getDatabasePlatform());
-		$step = 0;
-		foreach ($sqls as $sql) {
-			$this->emit($sql, $step++, count($sqls));
-			$connection->query($sql);
-		}
-		$connection->commit();
-	}
-
-	/**
-	 * @param string $sourceName
-	 * @param string $targetName
-	 */
-	protected function copyTable($sourceName, $targetName) {
-		$quotedSource = $this->connection->quoteIdentifier($sourceName);
-		$quotedTarget = $this->connection->quoteIdentifier($targetName);
-
-		$this->connection->exec('CREATE TABLE ' . $quotedTarget . ' (LIKE ' . $quotedSource . ')');
-		$this->connection->exec('INSERT INTO ' . $quotedTarget . ' SELECT * FROM ' . $quotedSource);
-	}
-
-	/**
-	 * @param string $name
-	 */
-	protected function dropTable($name) {
-		$this->connection->exec('DROP TABLE ' . $this->connection->quoteIdentifier($name));
-	}
-
-	/**
-	 * @param $statement
-	 * @return string
-	 */
-	protected function convertStatementToScript($statement) {
-		$script = $statement . ';';
-		$script .= PHP_EOL;
-		$script .= PHP_EOL;
-		return $script;
-	}
-
-	protected function getFilterExpression() {
-		return '/^' . preg_quote($this->config->getSystemValue('dbtableprefix', 'oc_')) . '/';
-	}
-
-	protected function emit($sql, $step, $max) {
-		if ($this->noEmit) {
-			return;
-		}
-		if(is_null($this->dispatcher)) {
-			return;
-		}
-		$this->dispatcher->dispatch('\OC\DB\Migrator::executeSql', new GenericEvent($sql, [$step+1, $max]));
-	}
-
-	private function emitCheckStep($tableName, $step, $max) {
-		if(is_null($this->dispatcher)) {
-			return;
-		}
-		$this->dispatcher->dispatch('\OC\DB\Migrator::checkTable', new GenericEvent($tableName, [$step+1, $max]));
-	}
+    /** @var \Doctrine\DBAL\Connection */
+    protected $connection;
+
+    /** @var ISecureRandom */
+    private $random;
+
+    /** @var IConfig */
+    protected $config;
+
+    /** @var EventDispatcher  */
+    private $dispatcher;
+
+    /** @var bool */
+    private $noEmit = false;
+
+    /**
+     * @param \Doctrine\DBAL\Connection|Connection $connection
+     * @param ISecureRandom $random
+     * @param IConfig $config
+     * @param EventDispatcher $dispatcher
+     */
+    public function __construct(\Doctrine\DBAL\Connection $connection,
+                                ISecureRandom $random,
+                                IConfig $config,
+                                EventDispatcher $dispatcher = null) {
+        $this->connection = $connection;
+        $this->random = $random;
+        $this->config = $config;
+        $this->dispatcher = $dispatcher;
+    }
+
+    /**
+     * @param \Doctrine\DBAL\Schema\Schema $targetSchema
+     */
+    public function migrate(Schema $targetSchema) {
+        $this->noEmit = true;
+        $this->applySchema($targetSchema);
+    }
+
+    /**
+     * @param \Doctrine\DBAL\Schema\Schema $targetSchema
+     * @return string
+     */
+    public function generateChangeScript(Schema $targetSchema) {
+        $schemaDiff = $this->getDiff($targetSchema, $this->connection);
+
+        $script = '';
+        $sqls = $schemaDiff->toSql($this->connection->getDatabasePlatform());
+        foreach ($sqls as $sql) {
+            $script .= $this->convertStatementToScript($sql);
+        }
+
+        return $script;
+    }
+
+    /**
+     * @param Schema $targetSchema
+     * @throws \OC\DB\MigrationException
+     */
+    public function checkMigrate(Schema $targetSchema) {
+        $this->noEmit = true;
+        /**@var \Doctrine\DBAL\Schema\Table[] $tables */
+        $tables = $targetSchema->getTables();
+        $filterExpression = $this->getFilterExpression();
+        $this->connection->getConfiguration()->
+            setFilterSchemaAssetsExpression($filterExpression);
+        $existingTables = $this->connection->getSchemaManager()->listTableNames();
+
+        $step = 0;
+        foreach ($tables as $table) {
+            if (strpos($table->getName(), '.')) {
+                list(, $tableName) = explode('.', $table->getName());
+            } else {
+                $tableName = $table->getName();
+            }
+            $this->emitCheckStep($tableName, $step++, count($tables));
+            // don't need to check for new tables
+            if (array_search($tableName, $existingTables) !== false) {
+                $this->checkTableMigrate($table);
+            }
+        }
+    }
+
+    /**
+     * Create a unique name for the temporary table
+     *
+     * @param string $name
+     * @return string
+     */
+    protected function generateTemporaryTableName($name) {
+        return $this->config->getSystemValue('dbtableprefix', 'oc_') . $name . '_' . $this->random->generate(13, ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
+    }
+
+    /**
+     * Check the migration of a table on a copy so we can detect errors before messing with the real table
+     *
+     * @param \Doctrine\DBAL\Schema\Table $table
+     * @throws \OC\DB\MigrationException
+     */
+    protected function checkTableMigrate(Table $table) {
+        $name = $table->getName();
+        $tmpName = $this->generateTemporaryTableName($name);
+
+        $this->copyTable($name, $tmpName);
+
+        //create the migration schema for the temporary table
+        $tmpTable = $this->renameTableSchema($table, $tmpName);
+        $schemaConfig = new SchemaConfig();
+        $schemaConfig->setName($this->connection->getDatabase());
+        $schema = new Schema(array($tmpTable), array(), $schemaConfig);
+
+        try {
+            $this->applySchema($schema);
+            $this->dropTable($tmpName);
+        } catch (DBALException $e) {
+            // pgsql needs to commit it's failed transaction before doing anything else
+            if ($this->connection->isTransactionActive()) {
+                $this->connection->commit();
+            }
+            $this->dropTable($tmpName);
+            throw new MigrationException($table->getName(), $e->getMessage());
+        }
+    }
+
+    /**
+     * @param \Doctrine\DBAL\Schema\Table $table
+     * @param string $newName
+     * @return \Doctrine\DBAL\Schema\Table
+     */
+    protected function renameTableSchema(Table $table, $newName) {
+        /**
+         * @var \Doctrine\DBAL\Schema\Index[] $indexes
+         */
+        $indexes = $table->getIndexes();
+        $newIndexes = array();
+        foreach ($indexes as $index) {
+            if ($index->isPrimary()) {
+                // do not rename primary key
+                $indexName = $index->getName();
+            } else {
+                // avoid conflicts in index names
+                $indexName = $this->config->getSystemValue('dbtableprefix', 'oc_') . $this->random->generate(13, ISecureRandom::CHAR_LOWER);
+            }
+            $newIndexes[] = new Index($indexName, $index->getColumns(), $index->isUnique(), $index->isPrimary());
+        }
+
+        // foreign keys are not supported so we just set it to an empty array
+        return new Table($newName, $table->getColumns(), $newIndexes, array(), 0, $table->getOptions());
+    }
+
+    public function createSchema() {
+        $filterExpression = $this->getFilterExpression();
+        $this->connection->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
+        return $this->connection->getSchemaManager()->createSchema();
+    }
+
+    /**
+     * @param Schema $targetSchema
+     * @param \Doctrine\DBAL\Connection $connection
+     * @return \Doctrine\DBAL\Schema\SchemaDiff
+     * @throws DBALException
+     */
+    protected function getDiff(Schema $targetSchema, \Doctrine\DBAL\Connection $connection) {
+        // adjust varchar columns with a length higher then getVarcharMaxLength to clob
+        foreach ($targetSchema->getTables() as $table) {
+            foreach ($table->getColumns() as $column) {
+                if ($column->getType() instanceof StringType) {
+                    if ($column->getLength() > $connection->getDatabasePlatform()->getVarcharMaxLength()) {
+                        $column->setType(Type::getType('text'));
+                        $column->setLength(null);
+                    }
+                }
+            }
+        }
+
+        $filterExpression = $this->getFilterExpression();
+        $this->connection->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
+        $sourceSchema = $connection->getSchemaManager()->createSchema();
+
+        // remove tables we don't know about
+        /** @var $table \Doctrine\DBAL\Schema\Table */
+        foreach ($sourceSchema->getTables() as $table) {
+            if (!$targetSchema->hasTable($table->getName())) {
+                $sourceSchema->dropTable($table->getName());
+            }
+        }
+        // remove sequences we don't know about
+        foreach ($sourceSchema->getSequences() as $table) {
+            if (!$targetSchema->hasSequence($table->getName())) {
+                $sourceSchema->dropSequence($table->getName());
+            }
+        }
+
+        $comparator = new Comparator();
+        return $comparator->compare($sourceSchema, $targetSchema);
+    }
+
+    /**
+     * @param \Doctrine\DBAL\Schema\Schema $targetSchema
+     * @param \Doctrine\DBAL\Connection $connection
+     */
+    protected function applySchema(Schema $targetSchema, \Doctrine\DBAL\Connection $connection = null) {
+        if (is_null($connection)) {
+            $connection = $this->connection;
+        }
+
+        $schemaDiff = $this->getDiff($targetSchema, $connection);
+
+        $connection->beginTransaction();
+        $sqls = $schemaDiff->toSql($connection->getDatabasePlatform());
+        $step = 0;
+        foreach ($sqls as $sql) {
+            $this->emit($sql, $step++, count($sqls));
+            $connection->query($sql);
+        }
+        $connection->commit();
+    }
+
+    /**
+     * @param string $sourceName
+     * @param string $targetName
+     */
+    protected function copyTable($sourceName, $targetName) {
+        $quotedSource = $this->connection->quoteIdentifier($sourceName);
+        $quotedTarget = $this->connection->quoteIdentifier($targetName);
+
+        $this->connection->exec('CREATE TABLE ' . $quotedTarget . ' (LIKE ' . $quotedSource . ')');
+        $this->connection->exec('INSERT INTO ' . $quotedTarget . ' SELECT * FROM ' . $quotedSource);
+    }
+
+    /**
+     * @param string $name
+     */
+    protected function dropTable($name) {
+        $this->connection->exec('DROP TABLE ' . $this->connection->quoteIdentifier($name));
+    }
+
+    /**
+     * @param $statement
+     * @return string
+     */
+    protected function convertStatementToScript($statement) {
+        $script = $statement . ';';
+        $script .= PHP_EOL;
+        $script .= PHP_EOL;
+        return $script;
+    }
+
+    protected function getFilterExpression() {
+        return '/^' . preg_quote($this->config->getSystemValue('dbtableprefix', 'oc_')) . '/';
+    }
+
+    protected function emit($sql, $step, $max) {
+        if ($this->noEmit) {
+            return;
+        }
+        if(is_null($this->dispatcher)) {
+            return;
+        }
+        $this->dispatcher->dispatch('\OC\DB\Migrator::executeSql', new GenericEvent($sql, [$step+1, $max]));
+    }
+
+    private function emitCheckStep($tableName, $step, $max) {
+        if(is_null($this->dispatcher)) {
+            return;
+        }
+        $this->dispatcher->dispatch('\OC\DB\Migrator::checkTable', new GenericEvent($tableName, [$step+1, $max]));
+    }
 }