Add a command to import an json array into the config

1 files changed, 164 insertions, 0 deletions

diff --git a/core/command/config/import.php b/core/command/config/import.php
new file mode 100644
index 00000000000..08c37570174
--- /dev/null
+++ b/core/command/config/import.php
@@ -0,0 +1,164 @@
+<?php
+/**
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, 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 OC\Core\Command\Config;
+
+use OCP\IConfig;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class Import extends Command {
+	protected $validRootKeys = ['system', 'apps'];
+
+	/** @var IConfig */
+	protected $config;
+
+	/**
+	 * @param IConfig $config
+	 */
+	public function __construct(IConfig $config) {
+		parent::__construct();
+		$this->config = $config;
+	}
+
+	protected function configure() {
+		$this
+			->setName('config:import')
+			->setDescription('Import a list of configs')
+			->addArgument(
+				'file',
+				InputArgument::REQUIRED,
+				'File with the json array to import'
+			)
+		;
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output) {
+		$importFile = $input->getArgument('file');
+		try {
+			$configs = $this->getArrayFromFile($importFile);
+		} catch (\UnexpectedValueException $e) {
+			$output->writeln('<error>' . $e->getMessage(). '</error>');
+		}
+
+		if (!empty($configs['system'])) {
+			$this->config->setSystemValues($configs['system']);
+		}
+
+		if (!empty($configs['apps'])) {
+			foreach ($configs['apps'] as $app => $appConfigs) {
+				foreach ($appConfigs as $key => $value) {
+					if ($value === null) {
+						$this->config->deleteAppValue($app, $key);
+					} else {
+						$this->config->setAppValue($app, $key, $value);
+					}
+				}
+			}
+		}
+
+		$output->writeln('<info>Config successfully imported from: ' . $importFile . '</info>');
+	}
+
+	/**
+	 * @param string $importFile
+	 * @return array
+	 * @throws \UnexpectedValueException when the array is invalid
+	 */
+	protected function getArrayFromFile($importFile) {
+		$helo = file_get_contents($importFile);
+		$decodedContent = json_decode($helo, true);
+		if (!is_array($decodedContent) || empty($decodedContent)) {
+			throw new \UnexpectedValueException('The file must contain a valid json array');
+		}
+
+		$this->validateArray($decodedContent);
+
+		return $decodedContent;
+	}
+
+	/**
+	 * Validates that the array only contains `system` and `apps`
+	 *
+	 * @param array $array
+	 */
+	protected function validateArray($array) {
+		$arrayKeys = array_keys($array);
+		$additionalKeys = array_diff($arrayKeys, $this->validRootKeys);
+		$commonKeys = array_intersect($arrayKeys, $this->validRootKeys);
+		if (!empty($additionalKeys)) {
+			throw new \UnexpectedValueException('Found invalid entries in root: ' . implode(', ', $additionalKeys));
+		}
+		if (empty($commonKeys)) {
+			throw new \UnexpectedValueException('At least one key of the following is expected: ' . implode(', ', $this->validRootKeys));
+		}
+
+		if (isset($array['system'])) {
+			if (is_array($array['system'])) {
+				foreach ($array['system'] as $name => $value) {
+					$this->checkTypeRecursively($value, $name);
+				}
+			} else {
+				throw new \UnexpectedValueException('The system config array is not an array');
+			}
+		}
+
+		if (isset($array['apps'])) {
+			if (is_array($array['apps'])) {
+				$this->validateAppsArray($array['apps']);
+			} else {
+				throw new \UnexpectedValueException('The apps config array is not an array');
+			}
+		}
+	}
+
+	/**
+	 * @param mixed $configValue
+	 * @param string $configName
+	 */
+	protected function checkTypeRecursively($configValue, $configName) {
+		if (!is_array($configValue) && !is_bool($configValue) && !is_int($configValue) && !is_string($configValue) && !is_null($configValue)) {
+			throw new \UnexpectedValueException('Invalid system config value for "' . $configName . '". Only arrays, bools, integers, strings and null (delete) are allowed.');
+		}
+		if (is_array($configValue)) {
+			foreach ($configValue as $key => $value) {
+				$this->checkTypeRecursively($value, $configName);
+			}
+		}
+	}
+
+	/**
+	 * Validates that app configs are only integers and strings
+	 *
+	 * @param array $array
+	 */
+	protected function validateAppsArray($array) {
+		foreach ($array as $app => $configs) {
+			foreach ($configs as $name => $value) {
+				if (!is_int($value) && !is_string($value) && !is_null($value)) {
+					throw new \UnexpectedValueException('Invalid app config value for "' . $app . '":"' . $name . '". Only integers, strings and null (delete) are allowed.');
+				}
+			}
+		}
+	}
+}