function obfuscate($filename)
{
global $conf;
global $parser, $traverser, $prettyPrinter;
global $debug_mode;
try {
$source = php_strip_whitespace($filename);
fprintf(STDERR, "Obfuscating %s%s", $filename, PHP_EOL);
//var_dump( token_get_all($source)); exit;
if ($source === '') {
throw new Exception("Error obfuscating [{$filename}]: php_strip_whitespace returned an empty string!");
}
try {
$stmts = $parser->parse($source . PHP_EOL . PHP_EOL);
// PHP-Parser returns the syntax tree
} catch (PhpParser\Error $e) {
$source = file_get_contents($filename);
$stmts = $parser->parse($source . PHP_EOL . PHP_EOL);
}
if ($debug_mode === 2) {
$source = file_get_contents($filename);
$stmts = $parser->parse($source . PHP_EOL . PHP_EOL);
}
if ($debug_mode) {
var_dump($stmts);
}
$stmts = $traverser->traverse($stmts);
// Use PHP-Parser function to traverse the syntax tree and obfuscate names
if ($conf->shuffle_stmts) {
$last_inst = array_pop($stmts);
$stmts = shuffle_statements($stmts);
$stmts[] = $last_inst;
}
$code = $prettyPrinter->prettyPrintFile($stmts);
// Use PHP-Parser function to output the obfuscated source, taking the modified obfuscated syntax tree as input
$code = trim($code);
// var_dump($stmts);
if (isset($conf->strip_indentation) && $conf->strip_indentation) {
$code = remove_whitespaces($code);
}
$endcode = substr($code, 6);
$code = '<?php' . PHP_EOL;
$code .= $conf->get_comment();
// comment obfuscated source
if (isset($conf->extract_comment_from_line) && isset($conf->extract_comment_to_line)) {
$t_source = file($filename);
for ($i = $conf->extract_comment_from_line - 1; $i < $conf->extract_comment_to_line; ++$i) {
$code .= $t_source[$i];
}
}
if (isset($conf->user_comment)) {
$code .= '/*' . PHP_EOL . $conf->user_comment . PHP_EOL . '*/' . PHP_EOL;
}
$code .= $endcode;
return $code;
} catch (Exception $e) {
fprintf(STDERR, "Obfuscator Parse Error [%s]:%s\t%s%s", $filename, PHP_EOL, $e->getMessage(), PHP_EOL);
return null;
}
}
private function shuffle_stmts(PhpParser\Node &$node)
{
global $conf;
if ($conf->shuffle_stmts) {
if (isset($node->stmts)) {
$stmts = $node->stmts;
$chunk_size = shuffle_get_chunk_size($stmts);
if ($chunk_size <= 0) {
return false;
}
// should never occur!
if (count($stmts) > 2 * $chunk_size) {
// $last_inst = array_pop($stmts);
$stmts = shuffle_statements($stmts);
// $stmts[] = $last_inst;
$node->stmts = $stmts;
return true;
}
}
}
return false;
}
