603 lines
21 KiB
PHP
603 lines
21 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Functions for the replication GUI
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*
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* @package PhpMyAdmin
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin;
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/**
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* Functions for the replication GUI
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*
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* @package PhpMyAdmin
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*/
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class ReplicationGui
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{
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/**
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* @var Replication
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*/
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private $replication;
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/**
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* @var Template
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*/
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private $template;
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/**
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* ReplicationGui constructor.
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*
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* @param Replication $replication Replication instance
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* @param Template $template Template instance
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*/
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public function __construct(Replication $replication, Template $template)
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{
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$this->replication = $replication;
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$this->template = $template;
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}
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/**
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* returns HTML for error message
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*
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* @return string HTML code
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*/
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public function getHtmlForErrorMessage()
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{
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$html = '';
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if (isset($_SESSION['replication']['sr_action_status'])
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&& isset($_SESSION['replication']['sr_action_info'])
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) {
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if ($_SESSION['replication']['sr_action_status'] == 'error') {
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$error_message = $_SESSION['replication']['sr_action_info'];
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$html .= Message::error($error_message)->getDisplay();
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$_SESSION['replication']['sr_action_status'] = 'unknown';
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} elseif ($_SESSION['replication']['sr_action_status'] == 'success') {
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$success_message = $_SESSION['replication']['sr_action_info'];
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$html .= Message::success($success_message)->getDisplay();
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$_SESSION['replication']['sr_action_status'] = 'unknown';
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}
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}
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return $html;
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}
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/**
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* returns HTML for master replication
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*
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* @return string HTML code
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*/
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public function getHtmlForMasterReplication()
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{
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if (! isset($_POST['repl_clear_scr'])) {
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$masterStatusTable = $this->getHtmlForReplicationStatusTable('master', true, false);
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$slaves = $GLOBALS['dbi']->fetchResult('SHOW SLAVE HOSTS', null, null);
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$urlParams = $GLOBALS['url_params'];
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$urlParams['mr_adduser'] = true;
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$urlParams['repl_clear_scr'] = true;
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}
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if (isset($_POST['mr_adduser'])) {
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$masterAddSlaveUser = $this->getHtmlForReplicationMasterAddSlaveUser();
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}
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return $this->template->render('server/replication/master_replication', [
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'clear_screen' => isset($_POST['repl_clear_scr']),
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'master_status_table' => $masterStatusTable ?? '',
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'slaves' => $slaves ?? [],
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'url_params' => $urlParams ?? [],
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'master_add_user' => isset($_POST['mr_adduser']),
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'master_add_slave_user' => $masterAddSlaveUser ?? '',
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]);
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}
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/**
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* returns HTML for master replication configuration
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*
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* @return string HTML code
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*/
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public function getHtmlForMasterConfiguration()
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{
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$databaseMultibox = $this->getHtmlForReplicationDbMultibox();
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return $this->template->render('server/replication/master_configuration', [
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'database_multibox' => $databaseMultibox,
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]);
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}
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/**
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* returns HTML for slave replication configuration
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*
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* @param bool $serverSlaveStatus Whether it is Master or Slave
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* @param array $serverSlaveReplication Slave replication
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*
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* @return string HTML code
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*/
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public function getHtmlForSlaveConfiguration(
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$serverSlaveStatus,
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array $serverSlaveReplication
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) {
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$serverSlaveMultiReplication = $GLOBALS['dbi']->fetchResult(
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'SHOW ALL SLAVES STATUS'
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);
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if ($serverSlaveStatus) {
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$urlParams = $GLOBALS['url_params'];
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$urlParams['sr_take_action'] = true;
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$urlParams['sr_slave_server_control'] = true;
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if ($serverSlaveReplication[0]['Slave_IO_Running'] == 'No') {
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$urlParams['sr_slave_action'] = 'start';
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} else {
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$urlParams['sr_slave_action'] = 'stop';
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}
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$urlParams['sr_slave_control_parm'] = 'IO_THREAD';
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$slaveControlIoLink = Url::getCommon($urlParams, '');
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if ($serverSlaveReplication[0]['Slave_SQL_Running'] == 'No') {
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$urlParams['sr_slave_action'] = 'start';
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} else {
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$urlParams['sr_slave_action'] = 'stop';
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}
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$urlParams['sr_slave_control_parm'] = 'SQL_THREAD';
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$slaveControlSqlLink = Url::getCommon($urlParams, '');
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if ($serverSlaveReplication[0]['Slave_IO_Running'] == 'No'
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|| $serverSlaveReplication[0]['Slave_SQL_Running'] == 'No'
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) {
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$urlParams['sr_slave_action'] = 'start';
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} else {
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$urlParams['sr_slave_action'] = 'stop';
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}
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$urlParams['sr_slave_control_parm'] = null;
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$slaveControlFullLink = Url::getCommon($urlParams, '');
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$urlParams['sr_slave_action'] = 'reset';
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$slaveControlResetLink = Url::getCommon($urlParams, '');
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$urlParams = $GLOBALS['url_params'];
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$urlParams['sr_take_action'] = true;
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$urlParams['sr_slave_skip_error'] = true;
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$slaveSkipErrorLink = Url::getCommon($urlParams, '');
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$urlParams = $GLOBALS['url_params'];
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$urlParams['sl_configure'] = true;
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$urlParams['repl_clear_scr'] = true;
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$reconfigureMasterLink = Url::getCommon($urlParams, '');
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$slaveStatusTable = $this->getHtmlForReplicationStatusTable('slave', true, false);
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$slaveIoRunning = $serverSlaveReplication[0]['Slave_IO_Running'] !== 'No';
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$slaveSqlRunning = $serverSlaveReplication[0]['Slave_SQL_Running'] !== 'No';
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}
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return $this->template->render('server/replication/slave_configuration', [
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'server_slave_multi_replication' => $serverSlaveMultiReplication,
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'url_params' => $GLOBALS['url_params'],
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'master_connection' => $_POST['master_connection'] ?? '',
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'server_slave_status' => $serverSlaveStatus,
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'slave_status_table' => $slaveStatusTable ?? '',
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'slave_sql_running' => $slaveSqlRunning ?? false,
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'slave_io_running' => $slaveIoRunning ?? false,
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'slave_control_full_link' => $slaveControlFullLink ?? '',
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'slave_control_reset_link' => $slaveControlResetLink ?? '',
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'slave_control_sql_link' => $slaveControlSqlLink ?? '',
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'slave_control_io_link' => $slaveControlIoLink ?? '',
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'slave_skip_error_link' => $slaveSkipErrorLink ?? '',
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'reconfigure_master_link' => $reconfigureMasterLink ?? '',
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'has_slave_configure' => isset($_POST['sl_configure']),
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]);
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}
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/**
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* returns HTML code for selecting databases
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationDbMultibox()
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{
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$databases = [];
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foreach ($GLOBALS['dblist']->databases as $database) {
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if (! $GLOBALS['dbi']->isSystemSchema($database)) {
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$databases[] = $database;
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}
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}
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return $this->template->render('server/replication/database_multibox', [
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'databases' => $databases,
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]);
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}
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/**
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* returns HTML for changing master
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*
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* @param string $submitName submit button name
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationChangeMaster($submitName)
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{
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list(
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$usernameLength,
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$hostnameLength
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) = $this->getUsernameHostnameLength();
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return $this->template->render('server/replication/change_master', [
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'server_id' => time(),
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'username_length' => $usernameLength,
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'hostname_length' => $hostnameLength,
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'submit_name' => $submitName,
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]);
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}
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/**
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* This function returns html code for table with replication status.
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*
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* @param string $type either master or slave
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* @param boolean $isHidden if true, then default style is set to hidden,
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* default value false
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* @param boolean $hasTitle if true, then title is displayed, default true
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationStatusTable(
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$type,
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$isHidden = false,
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$hasTitle = true
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): string {
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global $master_variables, $slave_variables;
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global $master_variables_alerts, $slave_variables_alerts;
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global $master_variables_oks, $slave_variables_oks;
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global $server_master_replication, $server_slave_replication;
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$replicationVariables = $master_variables;
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$variablesAlerts = $master_variables_alerts;
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$variablesOks = $master_variables_oks;
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$serverReplication = $server_master_replication;
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if ($type === 'slave') {
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$replicationVariables = $slave_variables;
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$variablesAlerts = $slave_variables_alerts;
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$variablesOks = $slave_variables_oks;
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$serverReplication = $server_slave_replication;
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}
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$variables = [];
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foreach ($replicationVariables as $variable) {
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$serverReplicationVariable = is_array($serverReplication) && isset($serverReplication[0]) ? $serverReplication[0][$variable] : '';
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$variables[$variable] = [
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'name' => $variable,
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'status' => '',
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'value' => $serverReplicationVariable,
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];
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if (isset($variablesAlerts[$variable])
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&& $variablesAlerts[$variable] === $serverReplicationVariable
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) {
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$variables[$variable]['status'] = 'attention';
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} elseif (isset($variablesOks[$variable])
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&& $variablesOks[$variable] === $serverReplicationVariable
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) {
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$variables[$variable]['status'] = 'allfine';
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}
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$variablesWrap = [
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'Replicate_Do_DB',
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'Replicate_Ignore_DB',
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'Replicate_Do_Table',
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'Replicate_Ignore_Table',
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'Replicate_Wild_Do_Table',
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'Replicate_Wild_Ignore_Table',
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];
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if (in_array($variable, $variablesWrap)) {
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$variables[$variable]['value'] = str_replace(
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',',
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', ',
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$serverReplicationVariable
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);
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}
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}
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return $this->template->render('server/replication/status_table', [
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'type' => $type,
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'is_hidden' => $isHidden,
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'has_title' => $hasTitle,
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'variables' => $variables,
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]);
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}
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/**
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* get the correct username and hostname lengths for this MySQL server
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*
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* @return array username length, hostname length
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*/
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public function getUsernameHostnameLength()
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{
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$fields_info = $GLOBALS['dbi']->getColumns('mysql', 'user');
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$username_length = 16;
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$hostname_length = 41;
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foreach ($fields_info as $val) {
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if ($val['Field'] == 'User') {
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strtok($val['Type'], '()');
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$v = strtok('()');
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if (Util::isInteger($v)) {
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$username_length = (int) $v;
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}
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} elseif ($val['Field'] == 'Host') {
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strtok($val['Type'], '()');
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$v = strtok('()');
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if (Util::isInteger($v)) {
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$hostname_length = (int) $v;
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}
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}
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}
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return [
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$username_length,
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$hostname_length,
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];
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}
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/**
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* returns html code to add a replication slave user to the master
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationMasterAddSlaveUser()
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{
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list(
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$usernameLength,
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$hostnameLength
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) = $this->getUsernameHostnameLength();
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if (isset($_POST['username']) && strlen($_POST['username']) === 0) {
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$GLOBALS['pred_username'] = 'any';
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}
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$username = '';
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if (! empty($_POST['username'])) {
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$username = $GLOBALS['new_username'] ?? $_POST['username'];
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}
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$currentUser = $GLOBALS['dbi']->fetchValue('SELECT USER();');
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if (! empty($currentUser)) {
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$userHost = str_replace(
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"'",
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'',
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mb_substr(
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$currentUser,
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mb_strrpos($currentUser, '@') + 1
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)
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);
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if ($userHost !== 'localhost' && $userHost !== '127.0.0.1') {
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$thisHost = $userHost;
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}
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}
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// when we start editing a user, $GLOBALS['pred_hostname'] is not defined
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if (! isset($GLOBALS['pred_hostname']) && isset($_POST['hostname'])) {
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switch (mb_strtolower($_POST['hostname'])) {
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case 'localhost':
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case '127.0.0.1':
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$GLOBALS['pred_hostname'] = 'localhost';
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break;
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case '%':
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$GLOBALS['pred_hostname'] = 'any';
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break;
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default:
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$GLOBALS['pred_hostname'] = 'userdefined';
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break;
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}
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}
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return $this->template->render('server/replication/master_add_slave_user', [
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'username_length' => $usernameLength,
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'hostname_length' => $hostnameLength,
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'has_username' => isset($_POST['username']),
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'username' => $username,
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'hostname' => $_POST['hostname'] ?? '',
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'predefined_username' => $GLOBALS['pred_username'] ?? '',
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'predefined_hostname' => $GLOBALS['pred_hostname'] ?? '',
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'this_host' => $thisHost ?? null,
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]);
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}
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/**
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* handle control requests
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*
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* @return void
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*/
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public function handleControlRequest()
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{
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if (isset($_POST['sr_take_action'])) {
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$refresh = false;
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$result = false;
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$messageSuccess = null;
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$messageError = null;
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if (isset($_POST['slave_changemaster']) && ! $GLOBALS['cfg']['AllowArbitraryServer']) {
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$_SESSION['replication']['sr_action_status'] = 'error';
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$_SESSION['replication']['sr_action_info'] = __('Connection to server is disabled, please enable $cfg[\'AllowArbitraryServer\'] in phpMyAdmin configuration.');
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} elseif (isset($_POST['slave_changemaster'])) {
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$result = $this->handleRequestForSlaveChangeMaster();
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} elseif (isset($_POST['sr_slave_server_control'])) {
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$result = $this->handleRequestForSlaveServerControl();
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$refresh = true;
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switch ($_POST['sr_slave_action']) {
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case 'start':
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$messageSuccess = __('Replication started successfully.');
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$messageError = __('Error starting replication.');
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break;
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case 'stop':
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$messageSuccess = __('Replication stopped successfully.');
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$messageError = __('Error stopping replication.');
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break;
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case 'reset':
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$messageSuccess = __('Replication resetting successfully.');
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$messageError = __('Error resetting replication.');
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break;
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default:
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$messageSuccess = __('Success.');
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$messageError = __('Error.');
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break;
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}
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} elseif (isset($_POST['sr_slave_skip_error'])) {
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$result = $this->handleRequestForSlaveSkipError();
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}
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if ($refresh) {
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$response = Response::getInstance();
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if ($response->isAjax()) {
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$response->setRequestStatus($result);
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$response->addJSON(
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'message',
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$result
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? Message::success($messageSuccess)
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: Message::error($messageError)
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);
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} else {
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Core::sendHeaderLocation(
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'./server_replication.php'
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. Url::getCommonRaw($GLOBALS['url_params'])
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);
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}
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}
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unset($refresh);
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}
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}
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/**
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* handle control requests for Slave Change Master
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*
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* @return boolean
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*/
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public function handleRequestForSlaveChangeMaster()
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{
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$sr = [];
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$_SESSION['replication']['m_username'] = $sr['username']
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= $GLOBALS['dbi']->escapeString($_POST['username']);
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$_SESSION['replication']['m_password'] = $sr['pma_pw']
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= $GLOBALS['dbi']->escapeString($_POST['pma_pw']);
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$_SESSION['replication']['m_hostname'] = $sr['hostname']
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= $GLOBALS['dbi']->escapeString($_POST['hostname']);
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$_SESSION['replication']['m_port'] = $sr['port']
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= $GLOBALS['dbi']->escapeString($_POST['text_port']);
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$_SESSION['replication']['m_correct'] = '';
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$_SESSION['replication']['sr_action_status'] = 'error';
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$_SESSION['replication']['sr_action_info'] = __('Unknown error');
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// Attempt to connect to the new master server
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$link_to_master = $this->replication->connectToMaster(
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$sr['username'],
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$sr['pma_pw'],
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$sr['hostname'],
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$sr['port']
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);
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if (! $link_to_master) {
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$_SESSION['replication']['sr_action_status'] = 'error';
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$_SESSION['replication']['sr_action_info'] = sprintf(
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__('Unable to connect to master %s.'),
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htmlspecialchars($sr['hostname'])
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);
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} else {
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// Read the current master position
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$position = $this->replication->slaveBinLogMaster($link_to_master);
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if (empty($position)) {
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$_SESSION['replication']['sr_action_status'] = 'error';
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$_SESSION['replication']['sr_action_info']
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= __(
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'Unable to read master log position. '
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. 'Possible privilege problem on master.'
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);
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} else {
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$_SESSION['replication']['m_correct'] = true;
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if (! $this->replication->slaveChangeMaster(
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$sr['username'],
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$sr['pma_pw'],
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$sr['hostname'],
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$sr['port'],
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$position,
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true,
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false
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)
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) {
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$_SESSION['replication']['sr_action_status'] = 'error';
|
|
$_SESSION['replication']['sr_action_info']
|
|
= __('Unable to change master!');
|
|
} else {
|
|
$_SESSION['replication']['sr_action_status'] = 'success';
|
|
$_SESSION['replication']['sr_action_info'] = sprintf(
|
|
__('Master server changed successfully to %s.'),
|
|
htmlspecialchars($sr['hostname'])
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $_SESSION['replication']['sr_action_status'] === 'success';
|
|
}
|
|
|
|
/**
|
|
* handle control requests for Slave Server Control
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function handleRequestForSlaveServerControl()
|
|
{
|
|
if (empty($_POST['sr_slave_control_parm'])) {
|
|
$_POST['sr_slave_control_parm'] = null;
|
|
}
|
|
if ($_POST['sr_slave_action'] == 'reset') {
|
|
$qStop = $this->replication->slaveControl("STOP", null, DatabaseInterface::CONNECT_USER);
|
|
$qReset = $GLOBALS['dbi']->tryQuery("RESET SLAVE;");
|
|
$qStart = $this->replication->slaveControl("START", null, DatabaseInterface::CONNECT_USER);
|
|
|
|
$result = ($qStop !== false && $qStop !== -1 &&
|
|
$qReset !== false && $qReset !== -1 &&
|
|
$qStart !== false && $qStart !== -1);
|
|
} else {
|
|
$qControl = $this->replication->slaveControl(
|
|
$_POST['sr_slave_action'],
|
|
$_POST['sr_slave_control_parm'],
|
|
DatabaseInterface::CONNECT_USER
|
|
);
|
|
|
|
$result = ($qControl !== false && $qControl !== -1);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* handle control requests for Slave Skip Error
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function handleRequestForSlaveSkipError()
|
|
{
|
|
$count = 1;
|
|
if (isset($_POST['sr_skip_errors_count'])) {
|
|
$count = $_POST['sr_skip_errors_count'] * 1;
|
|
}
|
|
|
|
$qStop = $this->replication->slaveControl("STOP", null, DatabaseInterface::CONNECT_USER);
|
|
$qSkip = $GLOBALS['dbi']->tryQuery(
|
|
"SET GLOBAL SQL_SLAVE_SKIP_COUNTER = " . $count . ";"
|
|
);
|
|
$qStart = $this->replication->slaveControl("START", null, DatabaseInterface::CONNECT_USER);
|
|
|
|
$result = ($qStop !== false && $qStop !== -1 &&
|
|
$qSkip !== false && $qSkip !== -1 &&
|
|
$qStart !== false && $qStart !== -1);
|
|
|
|
return $result;
|
|
}
|
|
}
|
