<?php
# No need for the template engine
if ( ! defined( 'WP_USE_THEMES' ) ) {
	define( 'WP_USE_THEMES', false ); // phpcs:ignore
}
//we set wp admin to true, so the backend features get loaded.
if ( ! defined( 'RSSSL_DOING_SYSTEM_STATUS' ) ) {
	define( 'RSSSL_DOING_SYSTEM_STATUS', true ); // phpcs:ignore
}

#find the base path
if ( ! defined( 'BASE_PATH' ) ) {
	define( 'BASE_PATH', rsssl_find_wordpress_base_path() . '/' );
}

# Load WordPress Core
if ( ! file_exists( BASE_PATH . 'wp-load.php' ) ) {
	die( 'WordPress not installed here' );
}
require_once BASE_PATH . 'wp-load.php';
require_once ABSPATH . 'wp-includes/class-phpass.php';
require_once ABSPATH . 'wp-admin/includes/image.php';
require_once ABSPATH . 'wp-admin/includes/plugin.php';

//by deleting these we make sure these functions run again
delete_transient( 'rsssl_testpage' );
function rsssl_get_system_status() {
	$output = '';
	global $wp_version;

	$output .= "General\n";
	$output .= 'Domain: ' . site_url() . "\n";
	$output .= 'Plugin version: ' . rsssl_version . "\n";
	$output .= 'WordPress version: ' . $wp_version . "\n";

	if ( RSSSL()->certificate->is_valid() ) {
		$output .= "SSL certificate is valid\n";
	} else {
		if ( ! function_exists( 'stream_context_get_params' ) ) {
			$output .= "stream_context_get_params not available\n";
		} elseif ( RSSSL()->certificate->detection_failed() ) {
			$output .= "Not able to detect certificate\n";
		} else {
			$output .= "Invalid SSL certificate\n";
		}
	}

	$output .= ( rsssl_get_option( 'ssl_enabled' ) ) ? "SSL is enabled\n\n"
		: "SSL is not yet enabled\n\n";

	$output .= "Options\n";
	if ( rsssl_get_option( 'mixed_content_fixer' ) ) {
		$output .= "* Mixed content fixer\n";
	}
	$output .= '* WordPress redirect' . rsssl_get_option( 'redirect' ) . "\n";

	if ( rsssl_get_option( 'switch_mixed_content_fixer_hook' ) ) {
		$output .= "* Use alternative method to fix mixed content\n";
	}
	if ( rsssl_get_option( 'dismiss_all_notices' ) ) {
		$output .= "* Dismiss all Really Simple SSL notices\n";
	}
	$output .= "\n";

	$output .= "Server information\n";
	$output .= 'Server: ' . RSSSL()->server->get_server() . "\n";
	$output .= 'SSL Type: ' . RSSSL()->admin->ssl_type . "\n";

	if ( function_exists( 'phpversion' ) ) {
		$output .= 'PHP Version: ' . phpversion() . "\n";
	}

	if ( is_multisite() ) {
		$output .= "MULTISITE\n";
	}

	if ( rsssl_is_networkwide_active() ) {
		$output .= "Really Simple SSL network wide activated\n";
	} elseif ( is_multisite() ) {
		$output .= "Really Simple SSL per site activated\n";
	}

	$output  .= '<br>' . '<b>' . 'SSL Configuration' . '</b>';
	$domain   = RSSSL()->certificate->get_domain();
	$certinfo = RSSSL()->certificate->get_certinfo( $domain );
	if ( ! $certinfo ) {
		$output .= 'SSL certificate not valid<br>';
	}

	$domain_valid = RSSSL()->certificate->is_domain_valid( $certinfo, $domain );
	if ( ! $domain_valid ) {
		$output .= "Domain on certificate does not match website's domain<br>";
	}

	$date_valid = RSSSL()->certificate->is_date_valid( $certinfo );
	if ( ! $date_valid ) {
		$output .= 'Date on certificate expired or not valid<br>';
	}
	$filecontents = get_transient( 'rsssl_testpage' );
	if ( strpos( $filecontents, '#SSL TEST PAGE#' ) !== false ) {
		$output .= 'SSL test page loaded successfully<br>';
	} else {
		$output .= 'Could not open testpage<br>';
	}
	if ( RSSSL()->admin->wpconfig_siteurl_not_fixed ) {
		$output .= 'siteurl or home url defines found in wpconfig<br>';
	}
	if ( RSSSL()->admin->wpconfig_siteurl_not_fixed ) {
		$output .= 'not able to fix wpconfig siteurl/homeurl.<br>';
	}

	if ( ! is_writable( rsssl_find_wp_config_path() ) ) {
		$output .= 'wp-config.php not writable<br>';
	}
	$output .= 'Detected SSL setup: ' . RSSSL()->admin->ssl_type . '<br>';
	if ( file_exists( RSSSL()->admin->htaccess_file() ) ) {
		$output .= 'htaccess file exists.<br>';
		if ( ! is_writable( RSSSL()->admin->htaccess_file() ) ) {
			$output .= 'htaccess file not writable.<br>';
		}
	} else {
		$output .= 'no htaccess file available.<br>';
	}

	if ( get_transient( 'rsssl_htaccess_test_success' ) === 'success' ) {
		$output .= 'htaccess redirect tested successfully.<br>';
	} elseif ( get_transient( 'rsssl_htaccess_test_success' ) === 'error' ) {
		$output .= 'htaccess redirect test failed.<br>';
	} elseif ( get_transient( 'rsssl_htaccess_test_success' ) === 'no-response' ) {
		$output .= 'htaccess redirect test failed: no response from server.<br>';
	}
	$mixed_content_fixer_detected = get_transient( 'rsssl_mixed_content_fixer_detected' );
	if ( 'no-response' === $mixed_content_fixer_detected ) {
		$output .= 'Could not connect to webpage to detect mixed content fixer<br>';
	}
	if ( 'not-found' === $mixed_content_fixer_detected ) {
		$output .= 'Mixed content marker not found in websource<br>';
	}
	if ( 'error' === $mixed_content_fixer_detected ) {
		$output .= 'Mixed content marker not found: unknown error<br>';
	}
	if ( 'curl-error' === $mixed_content_fixer_detected ) {
		//Site has has a cURL error
		$output .= 'Mixed content fixer could not be detected: cURL error<br>';
	}
	if ( 'found' === $mixed_content_fixer_detected ) {
		$output .= 'Mixed content fixer successfully detected<br>';
	}
	if ( ! rsssl_get_option( 'mixed_content_fixer' ) ) {
		$output .= 'Mixed content fixer not enabled<br>';
	}
	if ( ! RSSSL()->admin->htaccess_contains_redirect_rules() ) {
		$output .= '.htaccess does not contain default Really Simple SSL redirect.<br>';
	}

	$output .= "\nConstants\n";

	if ( defined( 'RSSSL_FORCE_ACTIVATE' ) ) {
		$output .= "RSSSL_FORCE_ACTIVATE defined\n";
	}
	if ( defined( 'RSSSL_NO_FLUSH' ) ) {
		$output .= 'RSSSL_NO_FLUSH defined';
	}
	if ( defined( 'RSSSL_DISMISS_ACTIVATE_SSL_NOTICE' ) ) {
		$output .= "RSSSL_DISMISS_ACTIVATE_SSL_NOTICE defined\n";
	}

	if ( defined( 'RSSSL_SAFE_MODE' ) ) {
		$output .= "RSSSL_SAFE_MODE defined\n";
	}
	if ( defined( 'RSSSL_SERVER_OVERRIDE' ) ) {
		$output .= "RSSSL_SERVER_OVERRIDE defined\n";
	}

	if ( ! defined( 'RSSSL_FORCE_ACTIVATE' )
		&& ! defined( 'RSSSL_NO_FLUSH' )
		&& ! defined( 'RSSSL_DISMISS_ACTIVATE_SSL_NOTICE' )
		&& ! defined( 'RSSSL_SAFE_MODE' )
		&& ! defined( 'RSSSL_SERVER_OVERRIDE' )
	) {
		$output .= "No constants defined\n";
	}
	return $output;
}

if ( rsssl_user_can_manage() && isset( $_GET['download'] ) ) {
	$rsssl_content   = rsssl_get_system_status();
	$rsssl_fsize     = function_exists( 'mb_strlen' ) ? mb_strlen( $rsssl_content, '8bit' ) : strlen( $rsssl_content );
	$rsssl_file_name = 'really-simple-ssl-system-status.txt';

	//direct download
	header( 'Content-type: application/octet-stream' );
	header( 'Content-Disposition: attachment; filename="' . $rsssl_file_name . '"' );
	//open in browser
	//header("Content-Disposition: inline; filename=\"".$file_name."\"");
	header( "Content-length: $rsssl_fsize" );
	header( 'Cache-Control: private', false ); // required for certain browsers
	header( 'Pragma: public' ); // required
	header( 'Expires: 0' );
	header( 'Cache-Control: must-revalidate, post-check=0, pre-check=0' );
	header( 'Content-Transfer-Encoding: binary' );
	echo $rsssl_content;
}

function rsssl_find_wordpress_base_path() {
	$path = __DIR__;

	do {
		if ( file_exists( $path . '/wp-config.php' ) ) {
			//check if the wp-load.php file exists here. If not, we assume it's in a subdir.
			if ( file_exists( $path . '/wp-load.php' ) ) {
				return $path;
			} else {
				//wp not in this directory. Look in each folder to see if it's there.
				if ( file_exists( $path ) && $handle = opendir( $path ) ) { //phpcs:ignore
					while ( false !== ( $file = readdir( $handle ) ) ) {//phpcs:ignore
						if ( '.' !== $file && '..' !== $file ) {
							$file = $path . '/' . $file;
							if ( is_dir( $file ) && file_exists( $file . '/wp-load.php' ) ) {
								$path = $file;
								break;
							}
						}
					}
					closedir( $handle );
				}
			}

			return $path;
		}
	} while ( $path = realpath( "$path/.." ) ); //phpcs:ignore

	return false;
}
