1 files changed, 181 insertions, 0 deletions
diff --git a/lib/private/Repair/Owncloud/SaveAccountsTableData.php b/lib/private/Repair/Owncloud/SaveAccountsTableData.php
new file mode 100644
index 00000000000..ab1560ddb8d
--- /dev/null
+++ b/lib/private/Repair/Owncloud/SaveAccountsTableData.php
@@ -0,0 +1,181 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Repair\Owncloud;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+use OCP\PreConditionNotMetException;
+
+/**
+ * Copies the email address from the accounts table to the preference table,
+ * before the data structure is changed and the information is gone
+ */
+class SaveAccountsTableData implements IRepairStep {
+	public const BATCH_SIZE = 75;
+
+	/** @var IDBConnection */
+	protected $db;
+
+	/** @var IConfig */
+	protected $config;
+
+	protected $hasForeignKeyOnPersistentLocks = false;
+
+	/**
+	 * @param IDBConnection $db
+	 * @param IConfig $config
+	 */
+	public function __construct(IDBConnection $db, IConfig $config) {
+		$this->db = $db;
+		$this->config = $config;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getName() {
+		return 'Copy data from accounts table when migrating from ownCloud';
+	}
+
+	/**
+	 * @param IOutput $output
+	 */
+	public function run(IOutput $output) {
+		if (!$this->shouldRun()) {
+			return;
+		}
+
+		$offset = 0;
+		$numUsers = $this->runStep($offset);
+
+		while ($numUsers === self::BATCH_SIZE) {
+			$offset += $numUsers;
+			$numUsers = $this->runStep($offset);
+		}
+
+		// oc_persistent_locks will be removed later on anyways so we can just drop and ignore any foreign key constraints here
+		$tableName = $this->config->getSystemValueString('dbtableprefix', 'oc_') . 'persistent_locks';
+		$schema = $this->db->createSchema();
+		$table = $schema->getTable($tableName);
+		foreach ($table->getForeignKeys() as $foreignKey) {
+			$table->removeForeignKey($foreignKey->getName());
+		}
+		$this->db->migrateToSchema($schema);
+
+		// Remove the table
+		if ($this->hasForeignKeyOnPersistentLocks) {
+			$this->db->dropTable('persistent_locks');
+		}
+		$this->db->dropTable('accounts');
+	}
+
+	/**
+	 * @return bool
+	 */
+	protected function shouldRun() {
+		$schema = $this->db->createSchema();
+		$prefix = $this->config->getSystemValueString('dbtableprefix', 'oc_');
+
+		$tableName = $prefix . 'accounts';
+		if (!$schema->hasTable($tableName)) {
+			return false;
+		}
+
+		$table = $schema->getTable($tableName);
+		if (!$table->hasColumn('user_id')) {
+			return false;
+		}
+
+		if ($schema->hasTable($prefix . 'persistent_locks')) {
+			$locksTable = $schema->getTable($prefix . 'persistent_locks');
+			$foreignKeys = $locksTable->getForeignKeys();
+			foreach ($foreignKeys as $foreignKey) {
+				if ($tableName === $foreignKey->getForeignTableName()) {
+					$this->hasForeignKeyOnPersistentLocks = true;
+				}
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param int $offset
+	 * @return int Number of copied users
+	 */
+	protected function runStep($offset) {
+		$query = $this->db->getQueryBuilder();
+		$query->select('*')
+			->from('accounts')
+			->orderBy('id')
+			->setMaxResults(self::BATCH_SIZE);
+
+		if ($offset > 0) {
+			$query->setFirstResult($offset);
+		}
+
+		$result = $query->execute();
+
+		$update = $this->db->getQueryBuilder();
+		$update->update('users')
+			->set('displayname', $update->createParameter('displayname'))
+			->where($update->expr()->eq('uid', $update->createParameter('userid')));
+
+		$updatedUsers = 0;
+		while ($row = $result->fetch()) {
+			try {
+				$this->migrateUserInfo($update, $row);
+			} catch (PreConditionNotMetException $e) {
+				// Ignore and continue
+			} catch (\UnexpectedValueException $e) {
+				// Ignore and continue
+			}
+			$updatedUsers++;
+		}
+		$result->closeCursor();
+
+		return $updatedUsers;
+	}
+
+	/**
+	 * @param IQueryBuilder $update
+	 * @param array $userdata
+	 * @throws PreConditionNotMetException
+	 * @throws \UnexpectedValueException
+	 */
+	protected function migrateUserInfo(IQueryBuilder $update, $userdata) {
+		$state = (int)$userdata['state'];
+		if ($state === 3) {
+			// Deleted user, ignore
+			return;
+		}
+
+		if ($userdata['email'] !== null) {
+			$this->config->setUserValue($userdata['user_id'], 'settings', 'email', $userdata['email']);
+		}
+		if ($userdata['quota'] !== null) {
+			$this->config->setUserValue($userdata['user_id'], 'files', 'quota', $userdata['quota']);
+		}
+		if ($userdata['last_login'] !== null) {
+			$this->config->setUserValue($userdata['user_id'], 'login', 'lastLogin', $userdata['last_login']);
+		}
+		if ($state === 1) {
+			$this->config->setUserValue($userdata['user_id'], 'core', 'enabled', 'true');
+		} elseif ($state === 2) {
+			$this->config->setUserValue($userdata['user_id'], 'core', 'enabled', 'false');
+		}
+
+		if ($userdata['display_name'] !== null) {
+			$update->setParameter('displayname', $userdata['display_name'])
+				->setParameter('userid', $userdata['user_id']);
+			$update->execute();
+		}
+	}
+}