FFRK JS unpacker

unpacker.php

<?php

if (count($argv) <= 1) {
    exit();
}

array_shift($argv);

foreach ($argv as $jsFile) {
    if (!file_exists($jsFile)) {
        echo "${jsFile} does not exist.\n";
        continue;
    }

    echo "${jsFile}\n";

    $js = file_get_contents($jsFile);

    $isJp = (stripos($jsFile, '_jp') !== false);

    $target = __DIR__ . '/storage/dev' . ($isJp ? '_jp' : '') . '/dff/static/js/';

    var_dump(strlen($js));

    if (!preg_match_all('/(define\("[\w\/]+", .*?(?:\)|\}))(?=((, |\n)define|;?\Z))/ism', $js, $m)) {
        echo "no define block found in file, skipping.\n";
        continue;
    }

    echo sprintf("Extracting %d blocks.\n", count($m[1]));

    foreach ($m[1] as $codeblock) {
        if (!preg_match('/define\("(.*?)",/i', $codeblock, $name)) {
            //invalid block
            continue;
        }

        $file = $target . $name[1] . ".js";

        if (!file_exists(dirname($file))) {
            mkdir(dirname($file), 0777, true);
        }

        file_put_contents($file, "/* Original file ${jsFile} */\n" . $codeblock);
    }
}