app.php

<?php

use \FileRun\WebLinks;

class custom_virustotal extends \FileRun\Files\Plugin
{

    static $localeSection = 'Custom Actions: Scan for Virus';

    function init()
    {
        $this->settings = [
            [
                'key' => 'APIKey',
                'title' => self::t('VirusTotal API Key'),
                'comment' => '<a href="https://support.virustotal.com/hc/en-us/articles/115002088769-Please-give-me-an-API-key" target="_blank">Getting a Virus Total API Key</a>'
            ]
        ];
        $this->JSconfig = [
            'title' => self::t("Scan for Virus"),
            'icon' => 'customizables/plugins/virustotal/icons/icon.png',
            'popup' => true,
            'width' => 800, 'height' => 450,
            'requires' => ['preview']
        ];
    }

    function isDisabled()
    {
        return (strlen(self::getSetting('APIKey')) == 0);
    }

    function run()
    {
        $size = \FM::getFileSize($this->data['fullPath']);

        if ($size <= 31457280) {
            $fileName = $this->data['fullPath'];
            $vt_key = self::getSetting('APIKey');
            $hash = hash_file('sha256', $fileName);
            $vt_json = file_get_contents("https://www.virustotal.com/vtapi/v2/file/report?apikey=$vt_key&resource=$hash");
            $vt_json_result = json_decode($vt_json, true);
            if ($vt_json_result['response_code'] == 0) {
                require_once('class/virustotal.class.php');
                $vt = new virustotal(self::getSetting('APIKey'));
                $vt->checkFile($this->data['fullPath']);
            }
            $this->logAction();
            require $this->path . "/display/display.php";
        } else {
            require $this->path . "/display/display_error.php";
            $this->logAction();
        }
    }
}