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<?php
/**
* Handle troubleshooting options.
*
* @package Health Check
*/
// Make sure the file is not directly accessible.
if ( ! defined( 'ABSPATH' ) ) {
die( 'We\'re sorry, but you can not directly access this file.' );
}
/**
* Class Health_Check_Troubleshoot
*/
class Health_Check_Troubleshoot {
/**
* Initiate the troubleshooting mode by setting meta data and cookies.
*
* @uses is_array()
* @uses md5()
* @uses rand()
* @uses update_option()
* @uses setcookie()
*
* @param array $allowed_plugins An array of plugins that may be active right away.
*
* @return void
*/
static function initiate_troubleshooting_mode( $allowed_plugins = array() ) {
if ( ! is_array( $allowed_plugins ) ) {
$allowed_plugins = (array) $allowed_plugins;
}
$loopback_hash = md5( rand() );
update_option( 'health-check-allowed-plugins', $allowed_plugins );
update_option( 'health-check-disable-plugin-hash', $loopback_hash . md5( $_SERVER['REMOTE_ADDR'] ) );
setcookie( 'wp-health-check-disable-plugins', $loopback_hash, 0, COOKIEPATH, COOKIE_DOMAIN );
}
/**
* Check if our Must-Use plugin exists.
*
* @uses file_exists()
*
* @return bool
*/
static function mu_plugin_exists() {
return file_exists( WPMU_PLUGIN_DIR . '/health-check-troubleshooting-mode.php' );
}
/**
* Check if the old Must-Use plugin exists.
*
* @uses file_exists()
*
* @return bool
*/
static function old_mu_plugin_exists() {
return file_exists( WPMU_PLUGIN_DIR . '/health-check-disable-plugins.php' );
}
/**
* Introduce our Must-Use plugin.
*
* Move the Must-Use plugin out to the correct directory, and prompt for credentials if required.
*
* @global $wp_filesystem
*
* @uses is_dir()
* @uses WP_Filesystem::mkdir()
* @uses Health_Check::display_notice()
* @uses esc_html__()
* @uses WP_Filesystem::copy()
* @uses trailingslashit()
* @uses Health_Check_Troubleshoot::session_started()
*
* @return bool
*/
static function setup_must_use_plugin( $redirect = true ) {
global $wp_filesystem;
// Make sure the `mu-plugins` directory exists.
if ( ! is_dir( WPMU_PLUGIN_DIR ) ) {
if ( ! $wp_filesystem->mkdir( WPMU_PLUGIN_DIR ) ) {
Health_Check::display_notice( esc_html__( 'We were unable to create the mu-plugins directory.', 'health-check' ), 'error' );
return false;
}
}
// Remove instances of the old plugin, to avoid collisions.
if ( Health_Check_Troubleshoot::old_mu_plugin_exists() ) {
if ( ! $wp_filesystem->delete( trailingslashit( WPMU_PLUGIN_DIR ) . 'health-check-disable-plugins.php' ) ) {
Health_Check::display_notice( esc_html__( 'We could not remove the old must-use plugin.', 'health-check' ), 'error' );
return false;
}
}
// Copy the must-use plugin to the local directory.
if ( ! $wp_filesystem->copy( trailingslashit( HEALTH_CHECK_PLUGIN_DIRECTORY ) . 'mu-plugin/health-check-troubleshooting-mode.php', trailingslashit( WPMU_PLUGIN_DIR ) . 'health-check-troubleshooting-mode.php' ) ) {
Health_Check::display_notice( esc_html__( 'We were unable to copy the plugin file required to enable the Troubleshooting Mode.', 'health-check' ), 'error' );
return false;
}
if ( $redirect ) {
Health_Check_Troubleshoot::session_started();
}
return true;
}
/**
* Check if our Must-Use plugin needs updating, and do so if necessary.
*
* @global $wp_filesystem
*
* @uses Health_Check_Troubleshoot::mu_plugin_exists()
* @uses Health_Check::get_filesystem_credentials()
* @uses get_plugin_data()
* @uses trailingslashit()
* @uses version_compare()
* @uses WP_Filesystem::copy()
* @uses esc_html__()
*
* @return bool
*/
static function maybe_update_must_use_plugin() {
if ( ! Health_Check_Troubleshoot::mu_plugin_exists() ) {
return false;
}
if ( ! Health_Check::get_filesystem_credentials() ) {
return false;
}
$current = get_plugin_data( trailingslashit( HEALTH_CHECK_PLUGIN_DIRECTORY ) . 'mu-plugin/health-check-troubleshooting-mode.php' );
$active = get_plugin_data( trailingslashit( WPMU_PLUGIN_DIR ) . 'health-check-troubleshooting-mode.php' );
$current_version = ( isset( $current['Version'] ) ? $current['Version'] : '0.0' );
$active_version = ( isset( $active['Version'] ) ? $active['Version'] : '0.0' );
if ( version_compare( $current_version, $active_version, '>' ) ) {
global $wp_filesystem;
if ( ! $wp_filesystem->copy( trailingslashit( HEALTH_CHECK_PLUGIN_DIRECTORY ) . 'mu-plugin/health-check-troubleshooting-mode.php', trailingslashit( WPMU_PLUGIN_DIR ) . 'health-check-troubleshooting-mode.php', true ) ) {
Health_Check::display_notice( esc_html__( 'We were unable to replace the plugin file required to enable the Troubleshooting Mode.', 'health-check' ), 'error' );
return false;
}
}
return true;
}
/**
* Output a notice if our Troubleshooting Mode has been initiated.
*
* @uses Health_Check::display_notice()
* @uses sprintf()
* @uses esc_html__()
* @uses esc_url()
* @uses admin_url()
*
* @return void
*/
static function session_started() {
Health_Check::display_notice(
sprintf(
'%s<br>%s',
esc_html__( 'You have successfully enabled Troubleshooting Mode, all plugins will appear inactive until you disable Troubleshooting Mode, or log out and back in again.', 'health-check' ),
sprintf(
'<a href="%1$s">%2$s</a><script type="text/javascript">window.location = "%1$s";</script>',
esc_url( admin_url( '/' ) ),
esc_html__( 'Return to the Dashboard', 'health-check' )
)
)
);
}
/**
* Display the form for enabling troubleshooting mode.
*
* @uses printf()
* @uses esc_html__()
* @uses Health_Check_Troubleshoot::mu_plugin_exists()
* @uses Health_Check_Troubleshoot::maybe_update_must_use_plugin()
* @uses Health_Check_Troubleshoot::session_started()
* @uses Health_Check::get_filesystem_credentials()
* @uses Health_Check_Troubleshoot::setup_must_use_plugin()
* @uses esc_html_e()
*
* @return void
*/
/**
* Display the form for enabling troubleshooting mode.
*
* @uses printf()
* @uses esc_html__()
* @uses Health_Check_Troubleshoot::mu_plugin_exists()
* @uses Health_Check_Troubleshoot::maybe_update_must_use_plugin()
* @uses Health_Check_Troubleshoot::session_started()
* @uses Health_Check::get_filesystem_credentials()
* @uses Health_Check_Troubleshoot::setup_must_use_plugin()
* @uses Health_Check_Troubleshooting_MU::is_troubleshooting()
* @uses esc_url()
* @uses add_query_arg()
* @uses esc_html_e()
*
* @return void
*/
static function show_enable_troubleshoot_form() {
if ( isset( $_POST['health-check-troubleshoot-mode'] ) ) {
if ( Health_Check_Troubleshoot::mu_plugin_exists() ) {
if ( ! Health_Check_Troubleshoot::maybe_update_must_use_plugin() ) {
return;
}
Health_Check_Troubleshoot::session_started();
} else {
if ( ! Health_Check::get_filesystem_credentials() ) {
return;
} else {
Health_Check_Troubleshoot::setup_must_use_plugin();
}
}
}
?>
<div>
<?php
$troubleshooting = null;
if ( class_exists( 'Health_Check_Troubleshooting_MU' ) ) {
$troubleshooting = new Health_Check_Troubleshooting_MU();
}
if ( null !== $troubleshooting && is_callable( array( $troubleshooting, 'is_troubleshooting' ) ) && $troubleshooting->is_troubleshooting() ) :
?>
<p style="text-align: center;">
<a class="button button-primary" href="<?php echo esc_url( add_query_arg( array( 'health-check-disable-troubleshooting' => true ) ) ); ?>">
<?php esc_html_e( 'Disable Troubleshooting Mode', 'health-check' ); ?>
</a>
</p>
<?php else : ?>
<form action="" method="post" class="form" style="text-align: center;">
<?php wp_nonce_field( 'health-check-enable-troubleshooting' ); ?>
<input type="hidden" name="health-check-troubleshoot-mode" value="true">
<p>
<button type="submit" class="button button-primary">
<?php esc_html_e( 'Enable Troubleshooting Mode', 'health-check' ); ?>
</button>
</p>
</form>
<?php endif; ?>
</div>
<?php
}
}