many small improvements to prepare the client for the Nextcloud 10 release

14 files changed, 1374 insertions, 0 deletions

diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
new file mode 100644
index 0000000..a610dfc
--- /dev/null
+++ b/lib/AppInfo/Application.php
@@ -0,0 +1,62 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\AppInfo;
+
+use OCA\Survey_Client\Controller\EndpointController;
+use OCA\Survey_Client\Collector;
+use OCP\AppFramework\App;
+use OCP\IContainer;
+
+class Application extends App {
+	public function __construct (array $urlParams = array()) {
+		parent::__construct('survey_client', $urlParams);
+		$container = $this->getContainer();
+
+		$container->registerService('EndpointController', function(IContainer $c) {
+			/** @var \OC\Server $server */
+			$server = $c->query('ServerContainer');
+
+			return new EndpointController(
+				$c->query('AppName'),
+				$server->getRequest(),
+				$c->query('OCA\Survey_Client\Collector'),
+				$server->getJobList(),
+				$server->getNotificationManager()
+			);
+		});
+
+		$container->registerService('OCA\Survey_Client\Collector', function(IContainer $c) {
+			/** @var \OCP\IServerContainer $server */
+			$server = $c->query('ServerContainer');
+
+			return new Collector(
+				$server->getHTTPClientService(),
+				$server->getConfig(),
+				$server->getDatabaseConnection(),
+				$server->getIniWrapper(),
+				$server->getL10NFactory()->get('survey_client')
+			);
+		});
+
+		$container->registerCapability('Capabilities');
+	}
+}
diff --git a/lib/BackgroundJobs/AdminNotification.php b/lib/BackgroundJobs/AdminNotification.php
new file mode 100644
index 0000000..5aeeb51
--- /dev/null
+++ b/lib/BackgroundJobs/AdminNotification.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Survey_Client\BackgroundJobs;
+
+use OC\BackgroundJob\QueuedJob;
+
+class AdminNotification extends QueuedJob {
+	protected function run($argument) {
+		$manager = \OC::$server->getNotificationManager();
+		$urlGenerator = \OC::$server->getURLGenerator();
+
+		$notification = $manager->createNotification();
+		$notification->setApp('survey_client')
+			->setDateTime(new \DateTime())
+			->setSubject('updated')
+			->setObject('dummy', 23)
+			->setLink($urlGenerator->getAbsoluteURL('index.php/settings/admin#usage-report'));
+
+		$enableAction = $notification->createAction();
+		$enableAction->setLabel('enable')
+			->setLink($urlGenerator->getAbsoluteURL('ocs/v2.php/apps/survey_client/api/v1/monthly'), 'POST')
+			->setPrimary(true);
+		$notification->addAction($enableAction);
+
+		$disableAction = $notification->createAction();
+		$disableAction->setLabel('disable')
+			->setLink($urlGenerator->getAbsoluteURL('ocs/v2.php/apps/survey_client/api/v1/monthly'), 'DELETE')
+			->setPrimary(false);
+		$notification->addAction($disableAction);
+
+		$adminGroup = \OC::$server->getGroupManager()->get('admin');
+		foreach ($adminGroup->getUsers() as $admin) {
+			$notification->setUser($admin->getUID());
+			$manager->notify($notification);
+		}
+
+	}
+}
diff --git a/lib/BackgroundJobs/MonthlyReport.php b/lib/BackgroundJobs/MonthlyReport.php
new file mode 100644
index 0000000..ccb0cc1
--- /dev/null
+++ b/lib/BackgroundJobs/MonthlyReport.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\BackgroundJobs;
+
+use OC\BackgroundJob\TimedJob;
+use OCA\Survey_Client\AppInfo\Application;
+
+class MonthlyReport extends TimedJob {
+
+	/**
+	 * MonthlyReport constructor.
+	 */
+	public function __construct() {
+		// Run all 28 days
+		$this->setInterval(28 * 24 * 60 * 60);
+	}
+
+	protected function run($argument) {
+		$application = new Application();
+		/** @var \OCA\Survey_Client\Collector $collector */
+		$collector = $application->getContainer()->query('OCA\Survey_Client\Collector');
+		$result = $collector->sendReport();
+
+		if (!$result->succeeded()) {
+			\OC::$server->getLogger()->info('Error while sending usage statistic');
+		}
+	}
+}
diff --git a/lib/Categories/Apps.php b/lib/Categories/Apps.php
new file mode 100644
index 0000000..b5b3333
--- /dev/null
+++ b/lib/Categories/Apps.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use Doctrine\DBAL\Connection;
+use OCP\IDBConnection;
+use OCP\IL10N;
+
+/**
+ * Class Apps
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Apps implements ICategory {
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IDBConnection $connection
+	 * @param IL10N $l
+	 */
+	public function __construct(IDBConnection $connection, IL10N $l) {
+		$this->connection = $connection;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'apps';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('App list <em>(for each app: name, version, is enabled?)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select('*')
+			->from('appconfig')
+			->where($query->expr()->in('configkey', $query->createNamedParameter(
+				['enabled', 'installed_version'],
+				Connection::PARAM_STR_ARRAY
+			)));
+		$result = $query->execute();
+
+		$data = [];
+		while ($row = $result->fetch()) {
+			if ($row['configkey'] === 'enabled' && $row['configvalue'] === 'no') {
+				$data[$row['appid']] = 'disabled';
+			}
+			if ($row['configkey'] === 'installed_version' && !isset($data[$row['appid']])) {
+				$data[$row['appid']] = $row['configvalue'];
+			}
+		}
+		$result->closeCursor();
+
+		return $data;
+	}
+}
diff --git a/lib/Categories/Database.php b/lib/Categories/Database.php
new file mode 100644
index 0000000..fe2d4c1
--- /dev/null
+++ b/lib/Categories/Database.php
@@ -0,0 +1,208 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\IL10N;
+
+/**
+ * Class Database
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Database implements ICategory {
+	/** @var \OCP\IConfig */
+	protected $config;
+
+	/** @var \OCP\IDBConnection */
+	protected $connection;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IConfig $config
+	 * @param IDBConnection $connection
+	 * @param IL10N $l
+	 */
+	public function __construct(IConfig $config, IDBConnection $connection, IL10N $l) {
+		$this->config = $config;
+		$this->connection = $connection;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'database';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('Database environment <em>(type, version, database size)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		return [
+			'type' => $this->config->getSystemValue('dbtype'),
+			'version' => $this->databaseVersion(),
+			'size' => $this->databaseSize(),
+		];
+	}
+
+	protected function databaseVersion() {
+		switch ($this->config->getSystemValue('dbtype')) {
+			case 'sqlite':
+			case 'sqlite3':
+				$sql = 'SELECT sqlite_version() AS version';
+				break;
+
+			case 'oci':
+				$sql = 'SELECT version FROM v$instance';
+				break;
+
+			case 'mysql':
+			case 'pgsql':
+			default:
+				$sql = 'SELECT VERSION() AS version';
+				break;
+		}
+
+		$result = $this->connection->executeQuery($sql);
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		if ($row) {
+			return $this->cleanVersion($row['version']);
+		}
+
+		return 'N/A';
+	}
+
+	/**
+	 * Copy of phpBB's get_database_size()
+	 * @link https://github.com/phpbb/phpbb/blob/release-3.1.6/phpBB/includes/functions_admin.php#L2908-L3043
+	 *
+	 * @copyright (c) phpBB Limited <https://www.phpbb.com>
+	 * @license GNU General Public License, version 2 (GPL-2.0)
+	 *
+	 * @return int|string
+	 */
+	protected function databaseSize() {
+		$database_size = false;
+
+		// This code is heavily influenced by a similar routine in phpMyAdmin 2.2.0
+		switch ($this->config->getSystemValue('dbtype')) {
+			case 'mysql':
+				$sql = 'SELECT VERSION() AS mysql_version';
+				$result = $this->connection->executeQuery($sql);
+				$row = $result->fetch();
+				$result->closeCursor();
+
+				if ($row) {
+					$version = $row['mysql_version'];
+					if (preg_match('#(3\.23|[45]\.)#', $version)) {
+						$db_name = (preg_match('#^(?:3\.23\.(?:[6-9]|[1-9]{2}))|[45]\.#', $version)) ? "`{$this->config->getSystemValue('dbname')}`" : $this->config->getSystemValue('dbname');
+						$sql = 'SHOW TABLE STATUS
+							FROM ' . $db_name;
+						$result = $this->connection->executeQuery($sql);
+						$database_size = 0;
+						while ($row = $result->fetch()) {
+							if ((isset($row['Type']) && $row['Type'] != 'MRG_MyISAM') || (isset($row['Engine']) && ($row['Engine'] == 'MyISAM' || $row['Engine'] == 'InnoDB'))) {
+								$database_size += $row['Data_length'] + $row['Index_length'];
+							}
+						}
+						$result->closeCursor();
+					}
+				}
+				break;
+
+			case 'sqlite':
+				if (file_exists($this->config->getSystemValue('dbhost'))) {
+					$database_size = filesize($this->config->getSystemValue('dbhost'));
+				}
+				break;
+
+			case 'pgsql':
+				$sql = "SELECT proname
+					FROM pg_proc
+					WHERE proname = 'pg_database_size'";
+				$result = $this->connection->executeQuery($sql);
+				$row = $result->fetch();
+				$result->closeCursor();
+				if ($row['proname'] == 'pg_database_size') {
+					$database = $this->config->getSystemValue('dbname');
+					if (strpos($database, '.') !== false)
+					{
+						list($database, ) = explode('.', $database);
+					}
+					$sql = "SELECT oid
+						FROM pg_database
+						WHERE datname = '$database'";
+					$result = $this->connection->executeQuery($sql);
+					$row = $result->fetch();
+					$result->closeCursor();
+					$oid = $row['oid'];
+					$sql = 'SELECT pg_database_size(' . $oid . ') as size';
+					$result = $this->connection->executeQuery($sql);
+					$row = $result->fetch();
+					$result->closeCursor();
+					$database_size = $row['size'];
+				}
+				break;
+
+			case 'oci':
+				$sql = 'SELECT SUM(bytes) as dbsize
+					FROM user_segments';
+				$result = $this->connection->executeQuery($sql);
+				$database_size = ($row = $result->fetch()) ? $row['dbsize'] : false;
+				$result->closeCursor();
+				break;
+		}
+
+		return ($database_size !== false) ? $database_size : 'N/A';
+	}
+
+	/**
+	 * Try to strip away additional information
+	 *
+	 * @param string $version E.g. `5.6.27-0ubuntu0.14.04.1`
+	 * @return string `5.6.27`
+	 */
+	protected function cleanVersion($version) {
+		$matches = [];
+		preg_match('/^(\d+)(\.\d+)(\.\d+)/', $version, $matches);
+		if (isset($matches[0])) {
+			return $matches[0];
+		}
+
+		return $version;
+	}
+}
diff --git a/lib/Categories/Encryption.php b/lib/Categories/Encryption.php
new file mode 100644
index 0000000..72334d4
--- /dev/null
+++ b/lib/Categories/Encryption.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use OCP\IConfig;
+use OCP\IL10N;
+
+/**
+ * Class Encryption
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Encryption implements ICategory {
+	/** @var \OCP\IConfig */
+	protected $config;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IConfig $config
+	 * @param IL10N $l
+	 */
+	public function __construct(IConfig $config, IL10N $l) {
+		$this->config = $config;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'encryption';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('Encryption information <em>(is it enabled?, what is the default module)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		$data = [
+			'enabled' => $this->config->getAppValue('core', 'encryption_enabled', 'no') ? 'yes' : 'no',
+			'default_module' => $this->config->getAppValue('core', 'default_encryption_module') === 'OC_DEFAULT_MODULE'  ? 'yes' : 'no',
+		];
+
+		if ($data['enabled'] === 'yes') {
+			unset($data['default_module']);
+		}
+
+		return $data;
+	}
+}
diff --git a/lib/Categories/FilesSharing.php b/lib/Categories/FilesSharing.php
new file mode 100644
index 0000000..16164d8
--- /dev/null
+++ b/lib/Categories/FilesSharing.php
@@ -0,0 +1,128 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use OCP\IDBConnection;
+use OCP\IL10N;
+
+/**
+ * Class FilesSharing
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class FilesSharing implements ICategory {
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IDBConnection $connection
+	 * @param IL10N $l
+	 */
+	public function __construct(IDBConnection $connection, IL10N $l) {
+		$this->connection = $connection;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'files_sharing';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('Number of shares <em>(per type and permission setting)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->addSelect(['permissions', 'share_type'])
+			->from('share')
+			->groupBy('permissions')
+			->groupBy('share_type');
+		$result = $query->execute();
+
+		$data = [
+			'num_shares' => $this->countEntries('share'),
+			'num_shares_user' => $this->countShares(0),
+			'num_shares_groups' => $this->countShares(1),
+			'num_shares_link' => $this->countShares(3),
+			'num_shares_link_no_password' => $this->countShares(3, true),
+			'num_fed_shares_sent' => $this->countShares(6),
+			'num_fed_shares_received' => $this->countEntries('share_external'),
+		];
+		while ($row = $result->fetch()) {
+			$data['permissions_' . $row['share_type'] . '_' . $row['permissions']] = $row['num_entries'];
+		}
+		$result->closeCursor();
+
+		return $data;
+	}
+
+	/**
+	 * @param string $tableName
+	 * @return int
+	 */
+	protected function countEntries($tableName) {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->from($tableName);
+		$result = $query->execute();
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		return (int) $row['num_entries'];
+	}
+
+	/**
+	 * @param int $type
+	 * @param bool $noShareWith
+	 * @return int
+	 */
+	protected function countShares($type, $noShareWith = false) {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->from('share')
+			->where($query->expr()->eq('share_type', $query->createNamedParameter($type)));
+
+		if ($noShareWith) {
+			$query->andWhere($query->expr()->isNull('share_with'));
+		}
+
+		$result = $query->execute();
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		return (int) $row['num_entries'];
+	}
+}
diff --git a/lib/Categories/ICategory.php b/lib/Categories/ICategory.php
new file mode 100644
index 0000000..c5a7f5d
--- /dev/null
+++ b/lib/Categories/ICategory.php
@@ -0,0 +1,46 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+/**
+ * Interface ICategory
+ *
+ * TODO Move to core public API?
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+interface ICategory {
+	/**
+	 * @return string
+	 */
+	public function getCategory();
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName();
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData();
+}
diff --git a/lib/Categories/Php.php b/lib/Categories/Php.php
new file mode 100644
index 0000000..cd30ab4
--- /dev/null
+++ b/lib/Categories/Php.php
@@ -0,0 +1,90 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use bantu\IniGetWrapper\IniGetWrapper;
+use OCP\IL10N;
+
+/**
+ * Class php
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Php implements ICategory {
+	/** @var IniGetWrapper */
+	protected $phpIni;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IniGetWrapper $phpIni
+	 * @param IL10N $l
+	 */
+	public function __construct(IniGetWrapper $phpIni, IL10N $l) {
+		$this->phpIni = $phpIni;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'php';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('PHP environment <em>(version, memory limit, max. execution time, max. file size)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		return [
+			'version' => $this->cleanVersion(PHP_VERSION),
+			'memory_limit' => $this->phpIni->getBytes('memory_limit'),
+			'max_execution_time' => $this->phpIni->getNumeric('max_execution_time'),
+			'upload_max_filesize' => $this->phpIni->getBytes('upload_max_filesize'),
+		];
+	}
+
+	/**
+	 * Try to strip away additional information
+	 *
+	 * @param string $version E.g. `5.5.30-1+deb.sury.org~trusty+1`
+	 * @return string `5.5.30`
+	 */
+	protected function cleanVersion($version) {
+		$matches = [];
+		preg_match('/^(\d+)(\.\d+)(\.\d+)/', $version, $matches);
+		if (isset($matches[0])) {
+			return $matches[0];
+		}
+
+		return $version;
+	}
+}
diff --git a/lib/Categories/Server.php b/lib/Categories/Server.php
new file mode 100644
index 0000000..c3307a1
--- /dev/null
+++ b/lib/Categories/Server.php
@@ -0,0 +1,87 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use OCP\IConfig;
+use OCP\IL10N;
+
+/**
+ * Class Server
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Server implements ICategory {
+	/** @var \OCP\IConfig */
+	protected $config;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IConfig $config
+	 * @param IL10N $l
+	 */
+	public function __construct(IConfig $config, IL10N $l) {
+		$this->config = $config;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'server';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('Server instance details <em>(version, memcache used, locking/previews/avatars enabled?)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		return [
+			'version' => $this->config->getSystemValue('version'),
+			'code' => $this->codeLocation(),
+			'enable_avatars' => $this->config->getSystemValue('enable_avatars', true) ? 'yes' : 'no',
+			'enable_previews' => $this->config->getSystemValue('enable_previews', true) ? 'yes' : 'no',
+			'memcache.local' => $this->config->getSystemValue('memcache.local', 'none'),
+			'memcache.distributed' => $this->config->getSystemValue('memcache.distributed', 'none'),
+			'asset-pipeline.enabled' => $this->config->getSystemValue('asset-pipeline.enabled') ? 'yes' : 'no',
+			'filelocking.enabled' => $this->config->getSystemValue('filelocking.enabled', true) ? 'yes' : 'no',
+			'memcache.locking' => $this->config->getSystemValue('memcache.locking', 'none'),
+			'debug' => $this->config->getSystemValue('debug', false) ? 'yes' : 'no',
+		];
+	}
+
+	protected function codeLocation() {
+		if (file_exists(\OC::$SERVERROOT . '/.git') && is_dir(\OC::$SERVERROOT . '/.git')) {
+			return 'git';
+		}
+		return 'other';
+	}
+}
diff --git a/lib/Categories/Stats.php b/lib/Categories/Stats.php
new file mode 100644
index 0000000..08df7a7
--- /dev/null
+++ b/lib/Categories/Stats.php
@@ -0,0 +1,131 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Categories;
+
+
+use OCP\IDBConnection;
+use OCP\IL10N;
+
+/**
+ * Class Stats
+ *
+ * @package OCA\Survey_Client\Categories
+ */
+class Stats implements ICategory {
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * @param IDBConnection $connection
+	 * @param IL10N $l
+	 */
+	public function __construct(IDBConnection $connection, IL10N $l) {
+		$this->connection = $connection;
+		$this->l = $l;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCategory() {
+		return 'stats';
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getDisplayName() {
+		return (string) $this->l->t('Statistic <em>(number of: files, users, storages per type)</em>');
+	}
+
+	/**
+	 * @return array (string => string|int)
+	 */
+	public function getData() {
+		return [
+			'num_files' => $this->countEntries('filecache'),
+			'num_users' => $this->countUserEntries(),
+			'num_storages' => $this->countEntries('storages'),
+			'num_storages_local' => $this->countStorages('local'),
+			'num_storages_home' => $this->countStorages('home'),
+			'num_storages_other' => $this->countStorages('other'),
+		];
+	}
+
+	/**
+	 * @return int
+	 */
+	protected function countUserEntries() {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->from('preferences')
+			->where($query->expr()->eq('configkey', $query->createNamedParameter('lastLogin')));
+		$result = $query->execute();
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		return (int) $row['num_entries'];
+	}
+
+	/**
+	 * @param string $type
+	 * @return int
+	 */
+	protected function countStorages($type) {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->from('storages');
+
+		if ($type === 'home') {
+			$query->where($query->expr()->like('id', $query->createNamedParameter('home::%')));
+		} else if ($type === 'local') {
+			$query->where($query->expr()->like('id', $query->createNamedParameter('local::%')));
+		} else if ($type === 'other') {
+			$query->where($query->expr()->notLike('id', $query->createNamedParameter('home::%')));
+			$query->andWhere($query->expr()->notLike('id', $query->createNamedParameter('local::%')));
+		}
+
+		$result = $query->execute();
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		return (int) $row['num_entries'];
+	}
+
+	/**
+	 * @param string $tableName
+	 * @return int
+	 */
+	protected function countEntries($tableName) {
+		$query = $this->connection->getQueryBuilder();
+		$query->selectAlias($query->createFunction('COUNT(*)'), 'num_entries')
+			->from($tableName);
+		$result = $query->execute();
+		$row = $result->fetch();
+		$result->closeCursor();
+
+		return (int) $row['num_entries'];
+	}
+}
diff --git a/lib/Collector.php b/lib/Collector.php
new file mode 100644
index 0000000..89e4a4d
--- /dev/null
+++ b/lib/Collector.php
@@ -0,0 +1,189 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client;
+
+use bantu\IniGetWrapper\IniGetWrapper;
+use OCA\Survey_Client\Categories\Apps;
+use OCA\Survey_Client\Categories\Database;
+use OCA\Survey_Client\Categories\Encryption;
+use OCA\Survey_Client\Categories\FilesSharing;
+use OCA\Survey_Client\Categories\ICategory;
+use OCA\Survey_Client\Categories\Php;
+use OCA\Survey_Client\Categories\Server;
+use OCA\Survey_Client\Categories\Stats;
+use OCP\AppFramework\Http;
+use OCP\Http\Client\IClientService;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\IL10N;
+
+class Collector {
+
+	const SURVEY_SERVER_URL = 'https://surveyserver.nextcloud.com/';
+
+	/** @var ICategory[] */
+	protected $categories;
+
+	/** @var IClientService */
+	protected $clientService;
+
+	/** @var IConfig */
+	protected $config;
+
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var IniGetWrapper */
+	protected $phpIni;
+
+	/** @var \OCP\IL10N */
+	protected $l;
+
+	/**
+	 * Collector constructor.
+	 *
+	 * @param IClientService $clientService
+	 * @param IConfig $config
+	 * @param IDBConnection $connection
+	 * @param IniGetWrapper $phpIni
+	 * @param IL10N $l
+	 */
+	public function __construct(IClientService $clientService, IConfig $config, IDBConnection $connection, IniGetWrapper $phpIni, IL10N $l) {
+		$this->clientService = $clientService;
+		$this->config = $config;
+		$this->connection = $connection;
+		$this->phpIni = $phpIni;
+		$this->l = $l;
+	}
+
+	protected function registerCategories() {
+		$this->categories[] = new Server(
+			$this->config,
+			$this->l
+		);
+		$this->categories[] = new php(
+			$this->phpIni,
+			$this->l
+		);
+		$this->categories[] = new Database(
+			$this->config,
+			$this->connection,
+			$this->l
+		);
+		$this->categories[] = new Apps(
+			$this->connection,
+			$this->l
+		);
+		$this->categories[] = new Stats(
+			$this->connection,
+			$this->l
+		);
+		$this->categories[] = new FilesSharing(
+			$this->connection,
+			$this->l
+		);
+		$this->categories[] = new Encryption(
+			$this->config,
+			$this->l
+		);
+	}
+
+	/**
+	 * @return array
+	 */
+	public function getCategories() {
+		$this->registerCategories();
+
+		$categories = [];
+
+		foreach ($this->categories as $category) {
+			$categories[$category->getCategory()] = [
+				'displayName'	=> $category->getDisplayName(),
+				'enabled'		=> $this->config->getAppValue('survey_client', $category->getCategory(), 'yes') === 'yes',
+			];
+		}
+
+		return $categories;
+	}
+
+	/**
+	 * @return array
+	 */
+	public function getReport() {
+		$this->registerCategories();
+
+		$tuples = [];
+		foreach ($this->categories as $category) {
+			if ($this->config->getAppValue('survey_client', $category->getCategory(), 'yes') === 'yes') {
+				foreach ($category->getData() as $key => $value) {
+					$tuples[] = [
+						$category->getCategory(),
+						$key,
+						$value
+					];
+				}
+			}
+		}
+
+		return [
+			'id' => $this->config->getSystemValue('instanceid'),
+			'items' => $tuples,
+		];
+	}
+
+	/**
+	 * @return \OC_OCS_Result
+	 */
+	public function sendReport() {
+		$report = $this->getReport();
+
+		$client = $this->clientService->newClient();
+
+		try {
+			$response = $client->post(self::SURVEY_SERVER_URL . 'ocs/v2.php/apps/survey_server/api/v1/survey', [
+				'timeout' => 5,
+				'query' => [
+					'data' => json_encode($report),
+				],
+			]);
+		} catch (\Exception $e) {
+			return new \OC_OCS_Result(
+				$report,
+				Http::STATUS_INTERNAL_SERVER_ERROR
+			);
+		}
+
+		if ($response->getStatusCode() === Http::STATUS_OK) {
+			$this->config->setAppValue('survey_client', 'last_sent', time());
+			$this->config->setAppValue('survey_client', 'last_report', json_encode($report));
+			return new \OC_OCS_Result(
+				$report,
+				100// HTTP::STATUS_OK, TODO: <status>failure</status><statuscode>200</statuscode>
+			);
+		}
+
+		return new \OC_OCS_Result(
+			$report,
+			Http::STATUS_INTERNAL_SERVER_ERROR
+		);
+	}
+}
diff --git a/lib/Controller/EndpointController.php b/lib/Controller/EndpointController.php
new file mode 100644
index 0000000..6b21ddf
--- /dev/null
+++ b/lib/Controller/EndpointController.php
@@ -0,0 +1,89 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client\Controller;
+
+use OCA\Survey_Client\Collector;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http;
+use OCP\BackgroundJob\IJobList;
+use OCP\IRequest;
+use OCP\Notification\IManager;
+
+class EndpointController extends Controller {
+
+	/** @var Collector */
+	protected $collector;
+
+	/** @var IJobList */
+	protected $jobList;
+
+	/** @var IManager */
+	protected $manager;
+
+	/**
+	 * @param string $appName
+	 * @param IRequest $request
+	 * @param Collector $collector
+	 * @param IJobList $jobList
+	 * @param IManager $manager
+	 */
+	public function __construct($appName, IRequest $request, Collector $collector, IJobList $jobList, IManager $manager) {
+		parent::__construct($appName, $request);
+
+		$this->collector = $collector;
+		$this->jobList = $jobList;
+		$this->manager = $manager;
+	}
+
+	/**
+	 * @return \OC_OCS_Result
+	 */
+	public function enableMonthly() {
+		$this->jobList->add('OCA\Survey_Client\BackgroundJobs\MonthlyReport');
+
+		$notification = $this->manager->createNotification();
+		$notification->setApp('survey_client');
+		$this->manager->markProcessed($notification);
+
+		return new \OC_OCS_Result();
+	}
+
+	/**
+	 * @return \OC_OCS_Result
+	 */
+	public function disableMonthly() {
+		$this->jobList->remove('OCA\Survey_Client\BackgroundJobs\MonthlyReport');
+
+		$notification = $this->manager->createNotification();
+		$notification->setApp('survey_client');
+		$this->manager->markProcessed($notification);
+
+		return new \OC_OCS_Result();
+	}
+
+	/**
+	 * @return \OC_OCS_Result
+	 */
+	public function sendReport() {
+		return $this->collector->sendReport();
+	}
+}
diff --git a/lib/Notifier.php b/lib/Notifier.php
new file mode 100644
index 0000000..995551f
--- /dev/null
+++ b/lib/Notifier.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Survey_Client;
+
+use OCP\L10N\IFactory;
+use OCP\Notification\INotification;
+use OCP\Notification\INotifier;
+
+class Notifier implements INotifier {
+
+	/** @var IFactory */
+	protected $l10nFactory;
+
+	/**
+	 * Notifier constructor.
+	 *
+	 * @param IFactory $l10nFactory
+	 */
+	public function __construct(IFactory $l10nFactory) {
+		$this->l10nFactory = $l10nFactory;
+	}
+
+	/**
+	 * @param INotification $notification
+	 * @param string $languageCode The code of the language that should be used to prepare the notification
+	 * @return INotification
+	 * @throws \InvalidArgumentException When the notification was not prepared by a notifier
+	 */
+	public function prepare(INotification $notification, $languageCode) {
+		if ($notification->getApp() !== 'survey_client') {
+			// Not my app => throw
+			throw new \InvalidArgumentException();
+		}
+
+		// Read the language from the notification
+		$l = $this->l10nFactory->get('survey_client', $languageCode);
+
+		$notification->setParsedSubject((string) $l->t(
+			'Do you want to help us to improve Nextcloud by providing some anonymized data about your setup and usage? You can disable it at any time in the admin settings again.'));
+
+		foreach ($notification->getActions() as $action) {
+			if ($action->getLabel() === 'disable') {
+				$action->setParsedLabel((string) $l->t('Not now'));
+			} else if ($action->getLabel() === 'enable') {
+				$action->setParsedLabel((string) $l->t('Send usage'));
+			}
+			$notification->addParsedAction($action);
+		}
+
+		return $notification;
+	}
+}