check-smf-license.php

<?php

/**
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines https://www.simplemachines.org
 * @copyright 2025 Simple Machines and individual contributors
 * @license https://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 3.0 Alpha 4
 */

// Stuff we will ignore.
$ignoreFiles = [
	// Index files in subdirectories.
	'\./(?:\w+/)+\bindex\.php',

	// Language Files are ignored as they don't use the License format.
	'./Themes/default/languages/',
	'\./Languages/',

	// Cache and miscellaneous.
	'\./cache/',
	'\./tests/',
	'\./vendor/',

	// Everything in other except install.php, upgrade.php, Settings.php and Settings_bak.php.
	'\./other/(?!install|upgrade|Settings)\w+\.php',

	// We will ignore Settings.php if this is a live dev site.
	'\./Settings\.php',
	'\./Settings_bak\.php',
	'\./db_last_error\.php',
];

$checkVersionAndYearFiles = [
	'\./index\.php',
	'\./SSI\.php',
	'\./cron\.php',
	'\./proxy\.php',
	'\./other/.*\.php',
];

try {
	if (($indexFile = fopen('./index.php', 'r')) !== false) {
		$indexContents = fread($indexFile, 1500);

		if (!preg_match('~define\(\'SMF_VERSION\', \'([^\']+)\'\);~i', $indexContents, $versionResults)) {
			throw new Exception('Could not locate SMF_VERSION');
		}
		$currentVersion = $versionResults[1];

		if (!preg_match('~define\(\'SMF_SOFTWARE_YEAR\', \'(\d{4})\'\);~i', $indexContents, $yearResults)) {
			throw new Exception('Could not locate SMF_SOFTWARE_YEAR');
		}
		$currentSoftwareYear = (int) $yearResults[1];

		foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator('.', FilesystemIterator::UNIX_PATHS)) as $currentFile => $fileInfo) {
			// Starts with a dot, skip.  Also gets Mac OS X resource files.
			if ($currentFile[0] == '.') {
				continue;
			}

			if ($fileInfo->getExtension() == 'php') {
				foreach ($ignoreFiles as $if) {
					if (preg_match('~' . $if . '~i', $currentFile)) {
						continue 2;
					}
				}

				if (($file = fopen($currentFile, 'r')) !== false) {
					// Some files, *cough* ManageServer *cough* have lots of junk before the license, otherwise this could easily be 500.
					$contents = fread($file, 4000);

					// How the license file should look, in a regex type format.
					$match = array(
						0 => '\* Simple Machines Forum \(SMF\)' . '[\r]?\n',
						1 => ' \*' . '[\r]?\n',
						2 => ' \* @package SMF' . '[\r]?\n',
						3 => ' \* @author Simple Machines https?://www.simplemachines.org' . '[\r]?\n',
						4 => ' \* @copyright \d{4} Simple Machines and individual contributors' . '[\r]?\n',
						5 => ' \* @license https?://www.simplemachines.org/about/smf/license.php BSD' . '[\r]?\n',
						6 => ' \*' . '[\r]?\n',
						7 => ' \* @version',
					);

					// Just see if the license is there.
					if (!preg_match('~' . implode('', $match) . '~i', $contents)) {
						throw new Exception('License File is invalid or not found in ' . $currentFile);
					}

					$shouldCheckVersionAndYear = false;
					foreach ($checkVersionAndYearFiles as $f) {
						if (preg_match('~' . $f . '~i', $currentFile)) {
							$shouldCheckVersionAndYear = true;
							break;
						}
					}

					if ($shouldCheckVersionAndYear) {
						// Check the year is correct.
						$yearMatch = $match;
						$yearMatch[4] = ' \* @copyright ' . $currentSoftwareYear . ' Simple Machines and individual contributors' . '[\r]?\n';
						if (!preg_match('~' . implode('', $yearMatch) . '~i', $contents)) {
							throw new Exception('The software year is incorrect in ' . $currentFile);
						}

						// Check the version is correct.
						$versionMatch = $match;
						$versionMatch[7] = ' \* @version ' . $currentVersion . '[\r]?\n';
						if (!preg_match('~' . implode('', $versionMatch) . '~i', $contents)) {
							throw new Exception('The version is incorrect in ' . $currentFile);
						}
					}
				} else {
					throw new Exception('Unable to open file ' . $currentFile);
				}
			}
		}
	} else {
		throw new Exception('Unable to open file ./index.php');
	}
}
catch (Exception $e) {
	fwrite(STDERR, $e->getMessage());
	exit(1);
}