class.ilVirusScannerICapRemoteAvClient.php

Go to the documentation of this file.

<?php

declare(strict_types=1);

class ilVirusScannerICapRemoteAvClient extends ilVirusScannerICapRemote
{
    private const HEADER = 'headers';
    private const HEADER_VIOLATION_FOUND = 'X-Violations-Found';
    private const HEADER_INFECTION_FOUND = 'X-Infection-Found';

    public function __construct(string $scan_command, string $clean_command)
    {
        parent::__construct($scan_command, $clean_command);
        $this->options(IL_ICAP_AV_COMMAND);
    }

    public function scanFile(string $file_path, string $org_name = ''): string
    {
        $return_string = '';
        $file_path = realpath($file_path);
        if (is_readable($file_path)) {
            $results = ($this->reqmod(
                'avscan',
                [
                    'req-hdr' => "POST /test HTTP/1.1\r\nHost: 127.0.0.1\r\n\r\n",
                    'req-body' => file_get_contents($file_path) //Todo: find a better way
                ]
            ));
            if ($this->analyseHeader($results)) {
                $return_string = sprintf('Virus found in file "%s"!', $file_path);
                $this->log->warning($return_string);
            }
        } else {
            $return_string = sprintf('File "%s" not found or not readable.', $file_path);
            $this->log->warning($return_string);
        }
        $this->log->info(sprintf('No virus found in file "%s".', $file_path));
        return $return_string;
    }

    protected function analyseHeader(array $header): bool
    {
        $virus_found = false;
        if (array_key_exists(self::HEADER, $header)) {
            $header = $header[self::HEADER];
            if (array_key_exists(self::HEADER_VIOLATION_FOUND, $header) && $header[self::HEADER_VIOLATION_FOUND] > 0) {
                $virus_found = true;
            }
            if (array_key_exists(
                self::HEADER_INFECTION_FOUND,
                $header
            ) && $header[self::HEADER_INFECTION_FOUND] !== '') {
                $infection_split = explode(';', $header[self::HEADER_INFECTION_FOUND]);
                foreach ($infection_split as $infection) {
                    $parts = explode('=', $infection);
                    if ($parts !== false &&
                        is_array($parts) &&
                        count($parts) > 0 &&
                        $parts[0] !== '') {
                        $this->log->warning(trim($parts[0]) . ': ' . trim($parts[1]));
                    }
                }
                $virus_found = true;
            }
        }

        return $virus_found;
    }
}