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Editing: class.integrity-checker.php
<?php class IntegrityChecker { public function __construct() { } /** * Recursive glob. This function is used to match files given the specified pattern, recursively. * @todo Put this somewhere standardised, this is copied (WET) from the ScriptLoader * @param string $pattern The pattern to match * @param int $flags Flags to pass to glob * @return string[] An array of matching files. * @see http://php.net/manual/en/function.glob.php */ protected function rglob($pattern, $flags = 0) { $files = glob($pattern, $flags); foreach (glob(dirname($pattern).'/*', GLOB_ONLYDIR|GLOB_NOSORT) as $dir) { $files = array_merge($files, $this->rglob($dir.'/'.basename($pattern), $flags)); } return $files; } public function record($dir, $pattern="*.php") { $dst = "$dir/integrity.json"; $files = $this->rglob("$dir/$pattern"); $json = (object)array('files' => array()); foreach($files as $filename) { $src = file_get_contents($filename); $crc = crc32($src); $json->records []= array( 'file' => preg_replace('#.+includes#', '', $filename), 'crc32' => $crc ); } file_put_contents($dst, json_encode($json)); } public function check($dir) { $src = "$dir/integrity.json"; if(!file_exists($src)) { trigger_error("Integrity records missing", E_USER_WARNING); return false; } $json = json_decode( file_get_contents($src) ); foreach($json->records as $record) { $filename = "$dir/{$record->file}"; if(!file_exists($filename)) { trigger_error("File in integrity record missing ({$record->file})", E_USER_WARNING); return false; } $src = file_get_contents($filename); $crc = crc32($src); if($crc != $record->crc32) { trigger_error("File integrity check failed ({$record->file})", E_USER_WARNING); return false; } } return true; } }
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