elkarte / Elkarte

sources/ElkArte/AdminController/Maintenance.php

<?php

/**
 * Forum maintenance. Important stuff.
 *
 * @package   ElkArte Forum
 * @copyright ElkArte Forum contributors
 * @license   BSD http://opensource.org/licenses/BSD-3-Clause (see accompanying LICENSE.txt file)
 *
 * This file contains code covered by:
 * copyright: 2011 Simple Machines (http://www.simplemachines.org)
 *
 * @version 2.0 Beta 1
 *
 */

namespace ElkArte\AdminController;

use ElkArte\AbstractController;
use ElkArte\Action;
use ElkArte\Cache\Cache;
use ElkArte\Debug;
use ElkArte\EventManager;
use ElkArte\Exceptions\Exception;
use ElkArte\Helper\DataValidator;
use ElkArte\Http\FtpConnection;
use ElkArte\Languages\Txt;
use ElkArte\User;

/**
 * Entry point class for all maintenance, routine, members, database,
 * attachments, topics, and hooks
 *
 * @package Maintenance
 */
class Maintenance extends AbstractController
{
	/** @var int Maximum topic counter */
	public int $max_topics;

	/** @var int How many actions to take for a maintenance action */
	public int $increment;

	/** @var int Total steps for a given maintenance action */
	public int $total_steps;

	/** @var int reStart pointer for paused maintenance actions */
	public int $start;

	/** @var int Loop counter for paused maintenance actions */
	public int $step;

	/**
	 * Main dispatcher, the maintenance access point.
	 *
	 * What it does:
	 *
	 * - This, as usual, checks permissions, loads language files,
	 * and forwards to the actual workers.
	 *
	 * @see AbstractController::action_index
	 */
	public function action_index()
	{
		global $txt, $context;

		// You absolutely must be an admin by here!
		isAllowedTo('admin_forum');

		// Need something to talk about?
		Txt::load('Maintenance');
		theme()->getTemplates()->load('Maintenance');

		// This uses admin tabs - as it should!
		// Create the tabs
		$context[$context['admin_menu_name']]['object']->prepareTabData([
				'title' => 'maintain_title',
				'description' => 'maintain_info',
				'class' => 'i-cog']
		);

		// So many things you can do - but frankly, I won't let you - just these!
		$subActions = [
			'routine' => [$this, 'action_routine',
				'activities' => [
					'repair' => 'action_repair_display',
					'recount' => 'action_recount_display',
					'logs' => 'action_logs_display',
					'cleancache' => 'action_cleancache_display',
				],
			],
			'database' => [$this, 'action_database',
				'activities' => [
					'optimize' => 'action_optimize_display',
					'backup' => 'action_backup_display',
					'convertmsgbody' => 'action_convertmsgbody_display',
				],
			],
			'members' => [$this, 'action_members',
				'activities' => [
					'reattribute' => 'action_reattribute_display',
					'purgeinactive' => 'action_purgeinactive_display',
					'recountposts' => 'action_recountposts_display',
				],
			],
			'topics' => [$this, 'action_topics',
				'activities' => [
					'massmove' => 'action_massmove_display',
					'pruneold' => 'action_pruneold_display',
				],
			],
			'hooks' => [$this, 'action_hooks'],
			'attachments' => ['controller' => ManageAttachments::class, 'function' => 'action_maintenance'],
		];

		// Set up the action handler
		$action = new Action('manage_maintenance');

		// Yep, sub-action time and call integrate_sa_manage_maintenance as well
		$subAction = $action->initialize($subActions, 'routine');

		// Doing something special, does it exist?
		$activity = $this->_req->getQuery('activity', 'trim|strval', '');

		// Set a few things.
		$context[$context['admin_menu_name']]['current_subsection'] = $subAction;
		$context['page_title'] = $txt['maintain_title'];
		$context['sub_action'] = $subAction;

		// Finally, fall through to what we are doing.
		$action->dispatch($subAction);

		// Any special activity defined, then go to it.
		if (isset($subActions[$subAction]['activities'][$activity]))
		{
			if (is_string($subActions[$subAction]['activities'][$activity]) && method_exists($this, $subActions[$subAction]['activities'][$activity]))
			{
				$this->{$subActions[$subAction]['activities'][$activity]}();
			}
			elseif (is_string($subActions[$subAction]['activities'][$activity]))
			{
				$subActions[$subAction]['activities'][$activity]();
			}
			elseif (is_array($subActions[$subAction]['activities'][$activity]))
			{
				$activity_obj = new $subActions[$subAction]['activities'][$activity]['class']();
				$activity_obj->{$subActions[$subAction]['activities'][$activity]['method']}();
			}
			else
			{
				$subActions[$subAction]['activities'][$activity]();
			}
		}

		// Create a maintenance token.  Kinda hard to do it any other way.
		createToken('admin-maint');
	}

	/**
	 * Supporting function for the routine maintenance area.
	 *
	 * @event integrate_routine_maintenance, passed $context['routine_actions'] array to allow
	 * addons to add more options
	 * @uses Template Maintenance, sub template maintain_routine
	 */
	public function action_routine(): void
	{
		global $context, $txt;

		if ($this->_req->compareQuery('done', 'recount', 'trim|strval'))
		{
			$context['maintenance_finished'] = $txt['maintain_recount'];
		}

		// set up the sub-template
		$context['sub_template'] = 'maintain_routine';
		$context['routine_actions'] = [
			'repair' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'repairboards']),
				'title' => $txt['maintain_errors'],
				'description' => $txt['maintain_errors_info'],
				'submit' => $txt['maintain_run_now'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
			'recount' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'routine', 'activity' => 'recount']),
				'title' => $txt['maintain_recount'],
				'description' => $txt['maintain_recount_info'],
				'submit' => $txt['maintain_run_now'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
			'logs' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'routine', 'activity' => 'logs']),
				'title' => $txt['maintain_logs'],
				'description' => $txt['maintain_logs_info'],
				'submit' => $txt['maintain_run_now'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
			'cleancache' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'routine', 'activity' => 'cleancache']),
				'title' => $txt['maintain_cache'],
				'description' => $txt['maintain_cache_info'],
				'submit' => $txt['maintain_run_now'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
		];

		call_integration_hook('integrate_routine_maintenance', [&$context['routine_actions']]);
	}

	/**
	 * Supporting function for the members maintenance area.
	 */
	public function action_members(): void
	{
		global $context, $txt;

		require_once(SUBSDIR . '/Membergroups.subs.php');

		// Get all membergroups - for deleting members and the like.
		$context['membergroups'] = getBasicMembergroupData(['all']);

		// Show that we completed this action
		if ($this->_req->compareQuery('done', 'recountposts', 'trim|strval'))
		{
			$context['maintenance_finished'] = [
				'errors' => [sprintf($txt['maintain_done'], $txt['maintain_recountposts'])],
			];
		}

		loadJavascriptFile('suggest.js', ['defer' => true]);

		// Set up the sub-template
		$context['sub_template'] = 'maintain_members';
	}

	/**
	 * Supporting function for the topics maintenance area.
	 *
	 * @event integrate_topics_maintenance, passed $context['topics_actions'] to allow addons
	 * to add additonal topic maintance functions
	 * @uses GenericBoards template, sub template maintain_topics
	 */
	public function action_topics(): void
	{
		global $context, $txt;

		require_once(SUBSDIR . '/Boards.subs.php');

		// Let's load up the boards in case they are useful.
		$context += getBoardList(['not_redirection' => true]);

		// Include a list of boards per category for easy toggling.
		foreach ($context['categories'] as $cat => &$category)
		{
			$context['boards_in_category'][$cat] = count($category['boards']);
			$category['child_ids'] = array_keys($category['boards']);
		}

		// @todo Hacky!
		$txt['choose_board'] = $txt['maintain_old_all'];
		$context['boards_check_all'] = true;
		theme()->getTemplates()->load('GenericBoards');

		$context['topics_actions'] = [
			'pruneold' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'topics', 'activity' => 'pruneold']),
				'title' => $txt['maintain_old'],
				'submit' => $txt['maintain_old_remove'],
				'confirm' => $txt['maintain_old_confirm'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
			'massmove' => [
				'url' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'topics', 'activity' => 'massmove']),
				'title' => $txt['move_topics_maintenance'],
				'submit' => $txt['move_topics_now'],
				'confirm' => $txt['move_topics_confirm'],
				'hidden' => [
					'session_var' => 'session_id',
					'admin-maint_token_var' => 'admin-maint_token',
				]
			],
		];

		call_integration_hook('integrate_topics_maintenance', [&$context['topics_actions']]);

		if ($this->_req->compareQuery('done', 'purgeold', 'trim|strval'))
		{
			$context['maintenance_finished'] = [
				'errors' => [sprintf($txt['maintain_done'], $txt['maintain_old'])],
			];
		}
		elseif ($this->_req->compareQuery('done', 'massmove', 'trim|strval'))
		{
			$context['maintenance_finished'] = [
				'errors' => [sprintf($txt['maintain_done'], $txt['move_topics_maintenance'])],
			];
		}

		// Set up the sub-template
		$context['sub_template'] = 'maintain_topics';
	}

	/**
	 * Find and try to fix all errors on the forum.
	 *
	 * - Forwards to repair boards controller.
	 */
	public function action_repair_display(): void
	{
		// Honestly, this should be done in the sub function.
		validateToken('admin-maint');

		$controller = new RepairBoards(new EventManager());
		$controller->setUser(User::$info);
		$controller->pre_dispatch();
		$controller->action_repairboards();
	}

	/**
	 * Wipes the current cache entries as best it can.
	 *
	 * - This only applies to our own cache entries, opcache, and data.
	 * - This action, like other maintenance tasks, may be called automatically
	 * by the task scheduler or manually by the admin in Maintenance area.
	 */
	public function action_cleancache_display(): void
	{
		global $context, $txt;

		checkSession();
		validateToken('admin-maint');

		// Just wipe the whole cache directory!
		Cache::instance()->clean();

		// Change the PWA stale so it will refresh (if enabled)
		setPWACacheStale(true);

		$context['maintenance_finished'] = $txt['maintain_cache'];
	}

	/**
	 * Empties all unimportant logs.
	 *
	 * - This action may be called periodically, by the tasks scheduler,
	 * or manually by the admin in Maintenance area.
	 */
	public function action_logs_display(): void
	{
		global $context, $txt;

		require_once(SUBSDIR . '/Maintenance.subs.php');

		checkSession();
		validateToken('admin-maint');

		// Maintenance time was scheduled!
		// When there is no intelligent life on this planet.
		// Apart from me, I mean.
		flushLogTables();

		updateSettings(['search_pointer' => 0]);

		$context['maintenance_finished'] = $txt['maintain_logs'];
	}

	/**
	 * Convert the column "body" of the table {db_prefix}messages from TEXT to
	 * MEDIUMTEXT and vice versa.
	 *
	 * What it does:
	 *
	 * - It requires the admin_forum permission.
	 * - This is needed only for MySQL.
	 * - During the conversion from MEDIUMTEXT to TEXT it check if any of the
	 * posts exceed the TEXT length and if so it aborts.
	 * - This action is linked from the maintenance screen (if it's applicable).
	 * - Accessed by ?action=admin;area=maintain;sa=database;activity=convertmsgbody.
	 *
	 * @uses the convert_msgbody sub template of the Admin template.
	 */
	public function action_convertmsgbody_display(): void
	{
		global $context, $txt, $modSettings, $time_start;

		// Show me your badge!
		isAllowedTo('admin_forum');
		$db = database();

		if ($db->supportMediumtext() === false)

The method supportMediumtext() does not exist on ElkArte\Database\QueryInterface. Since it exists in all sub-types, consider adding an abstract or default implementation to ElkArte\Database\QueryInterface.

		{
			return;
		}

		$body_type = '';

		// Find the body column "type" from the message table
		$colData = getMessageTableColumns();
		foreach ($colData as $column)
		{
			if ($column['name'] === 'body')
			{
				$body_type = $column['type'];
				break;
			}
		}

		$context['convert_to'] = $body_type === 'text' ? 'mediumtext' : 'text';
		if ($body_type === 'text' || isset($this->_req->post->do_conversion))
		{
			checkSession();
			validateToken('admin-maint');

			// Make it longer so we can do their limit.
			if ($body_type === 'text')
			{
				resizeMessageTableBody('mediumtext');
			}
			// Shorten the column so we can have (literally per record) less space occupied.
			else
			{
				resizeMessageTableBody('text');
			}

			$colData = getMessageTableColumns();
			foreach ($colData as $column)
			{
				if ($column['name'] === 'body')
				{
					$body_type = $column['type'];
				}
			}

			$context['maintenance_finished'] = $txt[$context['convert_to'] . '_title'];
			$context['convert_to'] = $body_type === 'text' ? 'mediumtext' : 'text';
			$context['convert_to_suggest'] = ($body_type !== 'text' && !empty($modSettings['max_messageLength']) && $modSettings['max_messageLength'] < 65536);

			return;
		}

		if (!isset($this->_req->post->do_conversion) || isset($this->_req->post->cont))
		{
			checkSession();
			if (!$this->_req->hasQuery('start'))
			{
				validateToken('admin-maint');
			}
			else
			{
				validateToken('admin-convertMsg');
			}

			$context['page_title'] = $txt['not_done_title'];
			$context['continue_post_data'] = '';
			$context['continue_countdown'] = 3;
			$context['sub_template'] = 'not_done';

			$increment = 500;
			$id_msg_exceeding = isset($this->_req->post->id_msg_exceeding) ? explode(',', $this->_req->post->id_msg_exceeding) : [];
			$max_msgs = countMessages();
			$start = $this->_req->getQuery('start', 'intval', 0);

			// Try for as much time as possible.
			detectServer()->setTimeLimit(600);
			while ($start < $max_msgs)
			{
				$id_msg_exceeding = detectExceedingMessages($start, $increment);

				$start += $increment;

				if (microtime(true) - $time_start > 3)
				{
					createToken('admin-convertMsg');
					$context['continue_post_data'] = '
						<input type="hidden" name="' . $context['admin-convertMsg_token_var'] . '" value="' . $context['admin-convertMsg_token'] . '" />
						<input type="hidden" name="' . $context['session_var'] . '" value="' . $context['session_id'] . '" />
						<input type="hidden" name="id_msg_exceeding" value="' . implode(',', $id_msg_exceeding) . '" />';
					$context['continue_get_data'] = '?action=admin;area=maintain;sa=database;activity=convertmsgbody;start=' . $start;
					$context['continue_percent'] = round(100 * $start / $max_msgs);
					$context['not_done_title'] = $txt['not_done_title'] . ' (' . $context['continue_percent'] . '%)';

					return;
				}
			}

			createToken('admin-maint');
			$context['page_title'] = $txt[$context['convert_to'] . '_title'];
			$context['sub_template'] = 'convert_msgbody';

			if (!empty($id_msg_exceeding))
			{
				if (count($id_msg_exceeding) > 100)
				{
					$query_msg = array_slice($id_msg_exceeding, 0, 100);
					$context['exceeding_messages_morethan'] = sprintf($txt['exceeding_messages_morethan'], count($id_msg_exceeding));
				}
				else
				{
					$query_msg = $id_msg_exceeding;
				}

				$context['exceeding_messages'] = getExceedingMessages($query_msg);
			}
		}
	}

	/**
	 * Optimizes all tables in the database and lists how much was saved.
	 *
	 * What it does:
	 *
	 * - It requires the admin_forum permission.
	 * - It shows as the maintain_forum admin area.
	 * - It is accessed from ?action=admin;area=maintain;sa=database;activity=optimize.
	 * - It also updates the optimize scheduled task such that the tables are not automatically optimized again too soon.
	 */
	public function action_optimize_display(): void
	{
		global $txt, $context;

		isAllowedTo('admin_forum');

		// Some validation
		checkSession();
		validateToken('admin-maint');

		ignore_user_abort(true);

		require_once(SUBSDIR . '/Maintenance.subs.php');

		$context['page_title'] = $txt['database_optimize'];
		$context['sub_template'] = 'optimize';

		$tables = getElkTables();

		// If there aren't any tables, then I believe that would mean the world has exploded...
		$context['num_tables'] = count($tables);
		if ($context['num_tables'] === 0)
		{
			throw new Exception('You appear to be running ElkArte in a flat file mode... fantastic!', false);
		}

		// For each table....
		$context['optimized_tables'] = [];
		$db_table = db_table();

		foreach ($tables as $table)
		{
			// Optimize the table!  We use backticks here because it might be a custom table.
			$data_freed = $db_table->optimize($table['table_name']);

			if ($data_freed > 0)
			{
				$context['optimized_tables'][] = [
					'name' => $table['table_name'],
					'data_freed' => $data_freed,
				];
			}
		}

		// Number of tables, etc....
		$txt['database_numb_tables'] = sprintf($txt['database_numb_tables'], $context['num_tables']);
		$context['num_tables_optimized'] = count($context['optimized_tables']);

		// Check that we don't auto-optimize again too soon!
		require_once(SUBSDIR . '/ScheduledTasks.subs.php');
		calculateNextTrigger('auto_optimize', true);
	}

	/**
	 * Recount many forum totals that can be recounted automatically without harm.
	 *
	 * What it does:
	 *
	 * - It requires the admin_forum permission.
	 * - It shows the maintain_forum admin area.
	 * - The function redirects back to ?action=admin;area=maintain when complete.
	 * - It is accessed via ?action=admin;area=maintain;sa=database;activity=recount.
	 *
	 * Totals recounted:
	 * - fixes for topics with wrong num_replies.
	 * - updates for num_posts and num_topics of all boards.
	 * - recounts personal_messages but not unread_messages.
	 * - repairs messages pointing to boards with topics pointing to other boards.
	 * - updates the last message posted in boards and children.
	 * - updates member count, latest member, topic count, and message count.
	 */
	public function action_recount_display(): void
	{
		global $txt, $context, $modSettings, $time_start;

		isAllowedTo('admin_forum');
		checkSession();

		// Functions
		require_once(SUBSDIR . '/Maintenance.subs.php');
		require_once(SUBSDIR . '/Topic.subs.php');

		// Validate the request or the loop
		if (!$this->_req->hasQuery('step'))
		{
			validateToken('admin-maint');
		}
		else
		{
			validateToken('admin-boardrecount');
		}

		// For the loop template
		$context['page_title'] = $txt['not_done_title'];
		$context['continue_post_data'] = '';
		$context['continue_countdown'] = 3;
		$context['sub_template'] = 'not_done';

		// Try for as much time as possible.
		detectServer()->setTimeLimit(600);

		// Step the number of topics at a time so things don't time out...
		$this->max_topics = getMaxTopicID();
		$this->increment = (int) min(max(50, ceil($this->max_topics / 4)), 2000);

		// An 8-step process should be 12 for the admin
		$this->total_steps = 8;
		$this->start = $this->_req->getQuery('start', 'inval', 0);
		$this->step = $this->_req->getQuery('step', 'intval', 0);

		// Get each topic with a wrong reply count and fix it
		if (empty($this->step))
		{
			// let's just do some at a time, though.
			while ($this->start < $this->max_topics)
			{
				recountApprovedMessages($this->start, $this->increment);
				recountUnapprovedMessages($this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((100 * $this->start / $this->max_topics) / $this->total_steps);
					$this->_buildContinue($percent, 0);

					return;
				}
			}

			// Done with step 0, reset start for the next one
			$this->start = 0;
		}

		// Update the post-count of each board.
		if ($this->step <= 1)
		{
			if (empty($this->start))
			{
				resetBoardsCounter('num_posts');
			}

			while ($this->start < $this->max_topics)
			{
				// Recount the posts
				updateBoardsCounter('posts', $this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((200 + 100 * $this->start / $this->max_topics) / $this->total_steps);
					$this->_buildContinue($percent, 1);

					return;
				}
			}

			// Done with step 1, reset start for the next one
			$this->start = 0;
		}

		// Update the topic count of each board.
		if ($this->step <= 2)
		{
			if (empty($this->start))
			{
				resetBoardsCounter('num_topics');
			}

			while ($this->start < $this->max_topics)
			{
				updateBoardsCounter('topics', $this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((300 + 100 * $this->start / $this->max_topics) / $this->total_steps);
					$this->_buildContinue($percent, 2);

					return;
				}
			}

			// Done with step 2, reset start for the next one
			$this->start = 0;
		}

		// Update the unapproved post-count of each board.
		if ($this->step <= 3)
		{
			if (empty($this->start))
			{
				resetBoardsCounter('unapproved_posts');
			}

			while ($this->start < $this->max_topics)
			{
				updateBoardsCounter('unapproved_posts', $this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((400 + 100 * $this->start / $this->max_topics) / $this->total_steps);
					$this->_buildContinue($percent, 3);

					return;
				}
			}

			// Done with step 3, reset start for the next one
			$this->start = 0;
		}

		// Update the unapproved topic count of each board.
		if ($this->step <= 4)
		{
			if (empty($this->start))
			{
				resetBoardsCounter('unapproved_topics');
			}

			while ($this->start < $this->max_topics)
			{
				updateBoardsCounter('unapproved_topics', $this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((500 + 100 * $this->start / $this->max_topics) / $this->total_steps);
					$this->_buildContinue($percent, 4);

					return;
				}
			}

			// Done with step 4, reset start for the next one
			$this->start = 0;
		}

		// Get all members with the wrong number of personal messages.
		if ($this->step <= 5)
		{
			updatePersonalMessagesCounter();

			// Done with step 5, reset start for the next one
			$this->start = 0;
			if (microtime(true) - $time_start > 3)
			{
				$percent = round(700 / $this->total_steps);
				$this->_buildContinue($percent, 6);

				return;
			}
		}

		// Any messages pointing to the wrong board?
		if ($this->step <= 6)
		{
			while ($this->start < $modSettings['maxMsgID'])
			{
				// Use the controller's start pointer, not the raw request
				updateMessagesBoardID($this->start, $this->increment);
				$this->start += $this->increment;

				if (microtime(true) - $time_start > 3)
				{
					$percent = round((700 + 100 * $this->start / $modSettings['maxMsgID']) / $this->total_steps);
					$this->_buildContinue($percent, 6);

					return;
				}
			}

			// Done with step 6, reset start for the next one
			$this->start = 0;
		}

		updateBoardsLastMessage();

		// Update all the basic statistics.
		require_once(SUBSDIR . '/Members.subs.php');
		updateMemberStats();
		require_once(SUBSDIR . '/Messages.subs.php');
		updateMessageStats();
		require_once(SUBSDIR . '/Topic.subs.php');
		updateTopicStats();

		// Finally, update the latest event times.
		require_once(SUBSDIR . '/ScheduledTasks.subs.php');
		calculateNextTrigger();

		// Ta-da
		redirectexit('action=admin;area=maintain;sa=routine;done=recount');
	}

	/**
	 * Helper function for the recount process, build the continued values for
	 * the template
	 *
	 * @param int $percent percent done
	 * @param int $step step we are on
	 */
	private function _buildContinue(int $percent, int $step): void
	{
		global $context, $txt;

		createToken('admin-boardrecount');

		$context['continue_post_data'] = '
			<input type="hidden" name="' . $context['admin-boardrecount_token_var'] . '" value="' . $context['admin-boardrecount_token'] . '" />
			<input type="hidden" name="' . $context['session_var'] . '" value="' . $context['session_id'] . '" />';
		$context['continue_get_data'] = '?action=admin;area=maintain;sa=routine;activity=recount;step=' . $step . ';start=' . $this->start;
		$context['continue_percent'] = $percent;
		$context['not_done_title'] = $txt['not_done_title'] . ' (' . $context['continue_percent'] . '%)';
	}

	/**
	 * Re-attribute posts to the user sent from the maintenance page.
	 */
	public function action_reattribute_display(): void
	{
		global $context, $txt;

		checkSession();

		$validator = new DataValidator();
		$validator->sanitation_rules(['posts' => 'empty', 'type' => 'trim', 'from_email' => 'trim', 'from_name' => 'trim', 'to' => 'trim']);
		$validator->validation_rules(['from_email' => 'valid_email', 'from_name' => 'required', 'to' => 'required', 'type' => 'contains[name,email]']);
		$validator->validate($this->_req->post);

		// Fetch the Mr. Clean values
		$our_post = array_replace((array) $this->_req->post, $validator->validation_data());

		// Do we have a valid set of options to continue?
		if (($our_post['type'] === 'name' && !empty($our_post['from_name'])) || ($our_post['type'] === 'email' && !$validator->validation_errors('from_email')))
		{
			// Find the member.
			require_once(SUBSDIR . '/Auth.subs.php');
			$members = findMembers($our_post['to']);

			// No members, no further
			if (empty($members))
			{
				throw new Exception('reattribute_cannot_find_member');
			}

			$memID = array_shift($members);
			$memID = $memID['id'];

			$email = $our_post['type'] === 'email' ? $our_post['from_email'] : '';
			$memberName = $our_post['type'] === 'name' ? $our_post['from_name'] : '';

			// Now call the reattribute function.
			require_once(SUBSDIR . '/Members.subs.php');
			reattributePosts($memID, $email, $memberName, !$our_post['posts']);

			$context['maintenance_finished'] = [
				'errors' => [sprintf($txt['maintain_done'], $txt['maintain_reattribute_posts'])],
			];
		}
		else
		{
			// Show them the correct error
			if ($our_post['type'] === 'name' && empty($our_post['from_name']))
			{
				$error = $validator->validation_errors(['from_name', 'to']);
			}
			else
			{
				$error = $validator->validation_errors(['from_email', 'to']);
			}

			$context['maintenance_finished'] = [
				'errors' => $error,
				'type' => 'minor',
			];
		}
	}

	/**
	 * Handling function for the backup stuff.
	 *
	 * - It requires an administrator and the session hash by post.
	 * - This method simply forwards to DumpDatabase2().
	 */
	public function action_backup_display(): ?bool
	{
		validateToken('admin-maint');

		// Administrators only!
		if (!allowedTo('admin_forum'))
		{
			throw new Exception('no_dump_database', 'critical');
		}

		checkSession();

		// Validate access
		if (!defined('I_KNOW_IT_MAY_BE_UNSAFE') && $this->_validate_access() === false)
		{
			$this->action_database();
			return null;
		}

		require_once(SUBSDIR . '/Admin.subs.php');
		emailAdmins('admin_backup_database', [
			'BAK_REALNAME' => $this->user->name
		]);

		logAction('database_backup', ['member' => $this->user->id], 'admin');
		require_once(SOURCEDIR . '/DumpDatabase.php');
		DumpDatabase2();

		// Should not get here as DumpDatabase2 exits
		return true;
	}

	/**
	 * Validates the user can make an FTP connection with the supplied uid/pass
	 *
	 * - Used as an extra layer of security when performing backups
	 */
	private function _validate_access(): bool
	{
		global $context, $txt;

		$ftp = new FtpConnection($this->_req->post->ftp_server, $this->_req->post->ftp_port, $this->_req->post->ftp_username, $this->_req->post->ftp_password);

		// No errors on the connection, id/pass are good
		// I know, I know... but a lot of people want to type /home/xyz/... which is wrong but logical.
		if ($ftp->error === false && !$ftp->chdir($this->_req->post->ftp_path))
		{
			$ftp->chdir(preg_replace('~^/home[2]?/[^/]+~', '', $this->_req->post->ftp_path));
		}

		// If we had an error...
		if ($ftp->error !== false)
		{
			Txt::load('Packages');
			$ftp_error = $ftp->last_message ?? $txt['package_ftp_' . $ftp->error] ?? '';

Are you sure $ftp->error of type string|true can be used in concatenation?

			// Fill the boxes for an FTP connection with data from the previous attempt
			$context['package_ftp'] = [
				'form_elements_only' => 1,
				'server' => $this->_req->post->ftp_server,
				'port' => $this->_req->post->ftp_port,
				'username' => $this->_req->post->ftp_username,
				'path' => $this->_req->post->ftp_path,
				'error' => empty($ftp_error) ? null : $ftp_error,
			];

			return false;
		}

		return true;
	}

	/**
	 * Supporting function for the database maintenance area.
	 */
	public function action_database(): void
	{
		global $context, $modSettings, $maintenance;

		// We need this, really...
		require_once(SUBSDIR . '/Maintenance.subs.php');

		// Set up the sub-template
		$context['sub_template'] = 'maintain_database';
		$db = database();

		if ($db->supportMediumtext())
		{
			$body_type = fetchBodyType();

			$context['convert_to'] = $body_type === 'text' ? 'mediumtext' : 'text';
			$context['convert_to_suggest'] = ($body_type !== 'text' && !empty($modSettings['max_messageLength']) && $modSettings['max_messageLength'] < 65536);
		}

		// Check a few things to give advices before make a backup
		// If safe mod is enabled, the external tool is *always* the best (and probably the only) solution
		$context['safe_mode_enable'] = false;

		// This is just a...guess
		$messages = countMessages();

		// 256 is what we use in the backup script
		detectServer()->setMemoryLimit('256M');
		$memory_limit = memoryReturnBytes(ini_get('memory_limit')) / (1024 * 1024);

		// Zip limit is set to more or less 1/4th the size of the available memory * 1500
		// 1500 is an estimate of the number of messages that generates a database of 1 MB (yeah, I know IT'S AN ESTIMATION!!!)
		// Why that? Because the only reliable zip package is the one sent out the first time,
		// so when the backup takes 1/5th (just to stay on the safe side) of the memory available
		$zip_limit = $memory_limit * 1500 / 5;

		// Here is more tricky: it depends on many factors, but the main idea is that
		// if it takes "too long" the backup is not reliable. So, I know that on my computer it takes
		// 20 minutes to back up 2.5 GB; of course, my computer is not representative, so I'll multiply by 4 the time.
		// I would consider "too long" 5 minutes (I know it can be a long time, but let's start with that):
		// 80 minutes for a 2.5 GB and a 5-minute limit means 160 MB approx
		$plain_limit = 240000;

		// Last thing: are we able to gain time?
		$current_time_limit = (int) ini_get('max_execution_time');
		$new_time_limit = detectServer()->setTimeLimit(159); //something strange just to be sure
		detectServer()->setTimeLimit($current_time_limit);

		$context['use_maintenance'] = 0;

		// External tool if:
		//  * cannot change the execution time OR
		//  * cannot reset timeout
		if (empty($new_time_limit) || ($current_time_limit === $new_time_limit && !function_exists('apache_reset_timeout')))
		{
			$context['suggested_method'] = 'use_external_tool';
		}
		elseif ($zip_limit < $plain_limit && $messages < $zip_limit)
		{
			$context['suggested_method'] = 'zipped_file';
		}
		elseif ($zip_limit > $plain_limit || ($zip_limit < $plain_limit && $plain_limit < $messages))
		{
			$context['suggested_method'] = 'use_external_tool';
			$context['use_maintenance'] = empty($maintenance) ? 2 : 0;
		}
		else
		{
			$context['use_maintenance'] = 1;
			$context['suggested_method'] = 'plain_text';
		}

		theme()->getTemplates()->load('Packages');
		Txt::load('Packages');

		// $context['package_ftp'] may be set action_backup_display when an error occurs
		if (!isset($context['package_ftp']))
		{
			$context['package_ftp'] = [
				'form_elements_only' => true,
				'server' => '',
				'port' => '',
				'username' => $modSettings['package_username'] ?? '',
				'path' => '',
				'error' => '',
			];
		}

		$context['skip_security'] = defined('I_KNOW_IT_MAY_BE_UNSAFE');
	}

	/**
	 * Removing old and inactive members.
	 */
	public function action_purgeinactive_display(): void
	{
		global $context, $txt;

		checkSession();
		validateToken('admin-maint');

		// Start with checking and cleaning what was sent
		$validator = new DataValidator();
		$validator->sanitation_rules(['maxdays' => 'intval']);
		$validator->validation_rules(['maxdays' => 'required', 'groups' => 'isarray', 'del_type' => 'required']);

		// Validator says, you can pass or not
		if ($validator->validate($this->_req->post))
		{
			// Get the clean data
			$our_post = array_replace((array) $this->_req->post, $validator->validation_data());

			require_once(SUBSDIR . '/Maintenance.subs.php');
			require_once(SUBSDIR . '/Members.subs.php');

			$groups = [];
			foreach ($our_post['groups'] as $id => $dummy)
			{
				$groups[] = (int) $id;
			}

			$time_limit = (time() - ($our_post['maxdays'] * 24 * 3600));
			$members = purgeMembers($our_post['del_type'], $groups, $time_limit);
			deleteMembers($members);

			$context['maintenance_finished'] = [
				'errors' => [sprintf($txt['maintain_done'], $txt['maintain_members'])],
			];
		}
		else
		{
			$context['maintenance_finished'] = [
				'errors' => $validator->validation_errors(),
				'type' => 'minor',
			];
		}
	}

	/**
	 * This method takes care of removal of old posts.
	 * They're very, very old, perhaps even older.
	 */
	public function action_pruneold_display(): void
	{
		validateToken('admin-maint');

		isAllowedTo('admin_forum');
		checkSession('post', 'admin');

		// No boards at all?  Forget it then :/.
		if (empty($this->_req->post->boards))
		{
			redirectexit('action=admin;area=maintain;sa=topics');
		}

		$boards = array_keys($this->_req->post->boards);

		if (!isset($this->_req->post->delete_type) || !in_array($this->_req->post->delete_type, ['moved', 'nothing', 'locked']))
		{
			$delete_type = 'nothing';
		}
		else
		{
			$delete_type = $this->_req->post->delete_type;
		}

		$exclude_stickies = isset($this->_req->post->delete_old_not_sticky);

		// @todo what is the minimum for maxdays? Maybe throw an error?
		$older_than = time() - 3600 * 24 * max($this->_req->getPost('maxdays', 'intval', 0), 1);

		require_once(SUBSDIR . '/Topic.subs.php');
		removeOldTopics($boards, $delete_type, $exclude_stickies, $older_than);

		// Log an action into the moderation log.
		logAction('pruned', ['days' => max($this->_req->getPost('maxdays', 'intval', 0), 1)]);

		redirectexit('action=admin;area=maintain;sa=topics;done=purgeold');
	}

	/**
	 * Moves topics from one board to another.
	 *
	 * @uses not_done template to pause the process.
	 */
	public function action_massmove_display(): void
	{
		global $context, $txt, $time_start;

		// Only admins.
		isAllowedTo('admin_forum');

		// And valid requests
		checkSession();

		// Set up to the context.
		$context['page_title'] = $txt['not_done_title'];
		$context['continue_countdown'] = 3;
		$context['continue_post_data'] = '';
		$context['continue_get_data'] = '';
		$context['sub_template'] = 'not_done';
		$context['start'] = $this->_req->getQuery('start', 'intval', 0);

		// First time we do this?
		$id_board_from = $this->_req->getPost('id_board_from', 'intval', $this->_req->getQuery('id_board_from', 'intval', 0));
		$id_board_to = $this->_req->getPost('id_board_to', 'intval', $this->_req->getQuery('id_board_to', 'intval', 0));

		// No boards, then this is your stop.
		if (empty($id_board_from) || empty($id_board_to))
		{
			return;
		}

		// These will be needed
		require_once(SUBSDIR . '/Maintenance.subs.php');
		require_once(SUBSDIR . '/Topic.subs.php');

		// How many topics are we moving?
		$total_topics = $this->_req->getQuery('totaltopics', 'intval', 0);
		if (empty($total_topics) || $context['start'] === 0)
		{
			validateToken('admin-maint');
			$total_topics = countTopicsFromBoard($id_board_from);
		}
		else
		{
			$total_topics = $this->_req->getQuery('totaltopics', 'intval');
			validateToken('admin_movetopics');
		}

		// We have topics to move so start the process.
		if (!empty($total_topics))
		{
			while ($context['start'] <= $total_topics)
			{
				// Let's get the next 10 topics.
				$topics = getTopicsToMove($id_board_from);

				// Just return if we don't have any topics left to move.
				if (empty($topics))
				{
					break;
				}

				// Let's move them.
				moveTopics($topics, $id_board_to);

				// Increase the counter
				$context['start'] += 10;

				// If this is really taking some time, show the pause screen
				if (microtime(true) - $time_start > 3)
				{
					// What's the percent?
					$context['continue_percent'] = round(100 * ($context['start'] / $total_topics), 1);

					// Set up for the form
					$context['continue_get_data'] = '?action=admin;area=maintain;sa=topics;activity=massmove;id_board_from=' . $id_board_from . ';id_board_to=' . $id_board_to . ';totaltopics=' . $total_topics . ';start=' . $context['start'];
					$context['continue_post_data'] = '
						<input type="hidden" name="' . $context['session_var'] . '" value="' . $context['session_id'] . '" />';

					// Let the template system do it's thang.
					return;
				}
			}
		}

		// Don't confuse admins by having an out-of-date cache.
		Cache::instance()->remove('board-' . $id_board_from);
		Cache::instance()->remove('board-' . $id_board_to);

		redirectexit('action=admin;area=maintain;sa=topics;done=massmove');
	}

	/**
	 * Generates a list of integration hooks for display
	 *
	 * - Accessed through ?action=admin;area=maintain;sa=hooks;
	 */
	public function action_hooks(): void
	{
		global $context, $txt;

		require_once(SUBSDIR . '/AddonSettings.subs.php');

		$context['filter_url'] = '';
		$context['current_filter'] = '';

		// Get the list of the current system hooks, filter them if needed
		$currentHooks = get_integration_hooks();
		$filter = $this->_req->getQuery('filter', 'trim', '');
		if (array_key_exists($filter, $currentHooks))
		{
			$context['filter_url'] = ';filter=' . $filter;
			$context['current_filter'] = $filter;
		}

		$list_options = [
			'id' => 'list_integration_hooks',
			'title' => $txt['maintain_sub_hooks_list'],
			'items_per_page' => 20,
			'base_href' => getUrl('admin', ['action' => 'admin', 'area' => 'maintain', 'sa' => 'hooks', $context['filter_url'], '{session_data}']),
			'default_sort_col' => 'hook_name',
			'get_items' => [
				'function' => fn($start, $items_per_page, $sort) => $this->list_getIntegrationHooks($start, $items_per_page, $sort),
			],
			'get_count' => [
				'function' => fn() => $this->list_getIntegrationHooksCount(),
			],
			'no_items_label' => $txt['hooks_no_hooks'],
			'columns' => [
				'hook_name' => [
					'header' => [
						'value' => $txt['hooks_field_hook_name'],
					],
					'data' => [
						'db' => 'hook_name',
					],
					'sort' => [
						'default' => 'hook_name',
						'reverse' => 'hook_name DESC',
					],
				],
				'function_name' => [
					'header' => [
						'value' => $txt['hooks_field_function_name'],
					],
					'data' => [
						'function' => static function ($data) {
							global $txt;

							if (!empty($data['included_file']))
							{
								return $txt['hooks_field_function'] . ': ' . $data['real_function'] . '<br />' . $txt['hooks_field_included_file'] . ': ' . $data['included_file'];
							}

							return $data['real_function'];
						},
					],
					'sort' => [
						'default' => 'function_name',
						'reverse' => 'function_name DESC',
					],
				],
				'file_name' => [
					'header' => [
						'value' => $txt['hooks_field_file_name'],
					],
					'data' => [
						'db' => 'file_name',
					],
					'sort' => [
						'default' => 'file_name',
						'reverse' => 'file_name DESC',
					],
				],
				'status' => [
					'header' => [
						'value' => $txt['hooks_field_hook_exists'],
						'class' => 'nowrap',
					],
					'data' => [
						'function' => static fn($data) => '<i class="icon i-post_moderation_' . $data['status'] . '" title="' . $data['img_text'] . '"></i>',
						'class' => 'centertext',
					],
					'sort' => [
						'default' => 'status',
						'reverse' => 'status DESC',
					],
				],
			],
			'additional_rows' => [
				[
					'position' => 'after_title',
					'value' => $txt['hooks_disable_legend'] . ':
					<ul>
						<li>
							<i class="icon i-post_moderation_allow" title="' . $txt['hooks_active'] . '"></i>' . $txt['hooks_disable_legend_exists'] . '
						</li>
						<li>
							<i class="icon i-post_moderation_deny col" title="' . $txt['hooks_missing'] . '"></i>' . $txt['hooks_disable_legend_missing'] . '
						</li>
					</ul>'
				],
			],
		];

		createList($list_options);

		$context['page_title'] = $txt['maintain_sub_hooks_list'];
		$context['sub_template'] = 'show_list';
		$context['default_list'] = 'list_integration_hooks';
	}

	/**
	 * Callback for createList(). Called by action_hooks
	 *
	 * @param int $start The item to start with (for pagination purposes)
	 * @param int $items_per_page The number of items to show per page
	 * @param string $sort A string indicating how to sort the results
	 *
	 * @return array
	 */
	public function list_getIntegrationHooks(int $start, int $items_per_page, string $sort): array
	{
		return list_integration_hooks_data($start, $items_per_page, $sort);
	}

	/**
	 * Simply returns the total count of integration hooks
	 * Callback for createList().
	 *
	 * @return int
	 */
	public function list_getIntegrationHooksCount(): int
	{
		global $context;

		$context['filter'] = $this->_req->getQuery('filter', 'trim|strval', false);

		return integration_hooks_count($context['filter']);
	}

	/**
	 * Recalculate all members post-counts
	 *
	 * What it does:
	 *
	 * - It requires the admin_forum permission.
	 * - Recounts all posts for members found in the message table
	 * - Updates the members post-count record in the members table
	 * - Honors the boards post-count flag
	 * - Does not count posts in the recycle bin
	 * - Zeros post-counts for all members with no posts in the message table
	 * - Runs as a delayed loop to avoid server overload
	 * - Uses the not_done template in Admin.template
	 * - Redirects back to action=admin;area=maintain;sa=members when complete.
	 * - Accessed via ?action=admin;area=maintain;sa=members;activity=recountposts
	 */
	public function action_recountposts_display(): void
	{
		global $txt, $context;

		// Check the session
		checkSession();

		// Set up to the context for the pause screen
		$context['page_title'] = $txt['not_done_title'];
		$context['continue_countdown'] = 3;
		$context['continue_get_data'] = '';
		$context['sub_template'] = 'not_done';

		// Init, do 200 members in a bunch
		$increment = 200;
		$start = $this->_req->getQuery('start', 'intval', 0);

		// Ask for some extra time, on big boards this may take a bit
		detectServer()->setTimeLimit(600);
		Debug::instance()->off();

		// The functions here will come in handy
		require_once(SUBSDIR . '/Maintenance.subs.php');

		// Only run this query if we don't have the total number of members that have posted
		if (!isset($_SESSION['total_members']) || $start === 0)
		{
			validateToken('admin-maint');
			$total_members = countContributors();
			$_SESSION['total_member'] = $total_members;
		}
		else
		{
			validateToken('admin-recountposts');
			$total_members = $this->_req->session->total_members;
		}

		// Let's get the next group of members and determine their post-count
		// (from the boards that have post-count enabled, of course).
		$total_rows = updateMembersPostCount($start, $increment);

		// Continue?
		if ($total_rows === $increment)
		{
			createToken('admin-recountposts');

			$start += $increment;
			$context['continue_get_data'] = '?action=admin;area=maintain;sa=members;activity=recountposts;start=' . $start;
			$context['continue_percent'] = round(100 * $start / $total_members);
			$context['not_done_title'] = $txt['not_done_title'] . ' (' . $context['continue_percent'] . '%)';
			$context['continue_post_data'] = '<input type="hidden" name="' . $context['admin-recountposts_token_var'] . '" value="' . $context['admin-recountposts_token'] . '" />
				<input type="hidden" name="' . $context['session_var'] . '" value="' . $context['session_id'] . '" />';

			Debug::instance()->on();

			return;
		}

		// No countable posts? set posts counter to 0
		updateZeroPostMembers();

		Debug::instance()->on();

		// All done, clean up and go back to maintenance
		unset($_SESSION['total_members']);
		redirectexit('action=admin;area=maintain;sa=members;done=recountposts');
	}
}