<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Tests for antivirus manager.
 *
 * @package    core_antivirus
 * @category   phpunit
 * @copyright  2016 Ruslan Kabalin, Lancaster University.
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();
require_once(__DIR__ . '/fixtures/testable_antivirus.php');

class core_antivirus_testcase extends advanced_testcase {
    protected $tempfile;


<     protected function setUp() {



>     protected function setUp(): void {


        global $CFG;
        // Use our special testable fixture plugin.
        $CFG->antiviruses = 'testable';

        $this->resetAfterTest();

        // Create tempfile.
        $tempfolder = make_request_directory(false);
        $this->tempfile = $tempfolder . '/' . rand();
        touch($this->tempfile);
    }


<     protected function tearDown() {



>     protected function tearDown(): void {


        @unlink($this->tempfile);
    }

    public function test_manager_get_antivirus() {
        // We are using clamav plugin in the test,
        // as the only plugin we know exists for sure.
        $antivirusviaget = \core\antivirus\manager::get_antivirus('clamav');
        $antivirusdirect = new \antivirus_clamav\scanner();
        $this->assertEquals($antivirusdirect, $antivirusviaget);
    }

    public function test_manager_scan_file_no_virus() {
        // Run mock scanning.
        $this->assertFileExists($this->tempfile);
        $this->assertEmpty(\core\antivirus\manager::scan_file($this->tempfile, 'OK', true));
        // File expected to remain in place.
        $this->assertFileExists($this->tempfile);
    }

    public function test_manager_scan_file_error() {
        // Run mock scanning.
        $this->assertFileExists($this->tempfile);
        $this->assertEmpty(\core\antivirus\manager::scan_file($this->tempfile, 'ERROR', true));
        // File expected to remain in place.
        $this->assertFileExists($this->tempfile);
    }

    public function test_manager_scan_file_virus() {
        // Run mock scanning without deleting infected file.
        $this->assertFileExists($this->tempfile);
        $this->expectException(\core\antivirus\scanner_exception::class);
        $this->assertEmpty(\core\antivirus\manager::scan_file($this->tempfile, 'FOUND', false));
        // File expected to remain in place.
        $this->assertFileExists($this->tempfile);

        // Run mock scanning with deleting infected file.
        $this->expectException(\core\antivirus\scanner_exception::class);
        $this->assertEmpty(\core\antivirus\manager::scan_file($this->tempfile, 'FOUND', true));
        // File expected to be deleted.

<         $this->assertFileNotExists($this->tempfile);



>         $this->assertFileDoesNotExist($this->tempfile);
>     }
> 
>     public function test_manager_send_message_to_user_email_scan_file_virus() {
>         $sink = $this->redirectEmails();
>         $exception = null;
>         try {
>             set_config('notifyemail', 'fake@example.com', 'antivirus');
>             \core\antivirus\manager::scan_file($this->tempfile, 'FOUND', true);
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         $result = $sink->get_messages();
>         $this->assertCount(1, $result);
>         $this->assertStringContainsString('fake@example.com', $result[0]->to);
>         $sink->close();
>     }
> 
>     public function test_manager_send_message_to_admin_email_scan_file_virus() {
>         $sink = $this->redirectMessages();
>         $exception = null;
>         try {
>             \core\antivirus\manager::scan_file($this->tempfile, 'FOUND', true);
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         $result = $sink->get_messages();
>         $admins = array_keys(get_admins());
>         $this->assertCount(1, $admins);
>         $this->assertCount(1, $result);
>         $this->assertEquals($result[0]->useridto, reset($admins));
>         $sink->close();
>     }
> 
>     public function test_manager_quarantine_file_virus() {
>         try {
>             set_config('enablequarantine', true, 'antivirus');
>             \core\antivirus\manager::scan_file($this->tempfile, 'FOUND', true);
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         // Quarantined files.
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(1, count($quarantinedfiles));
>         // Clean up.
>         \core\antivirus\quarantine::clean_up_quarantine_folder(time());
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(0, count($quarantinedfiles));
>     }
> 
>     public function test_manager_none_quarantine_file_virus() {
>         try {
>             \core\antivirus\manager::scan_file($this->tempfile, 'FOUND', true);
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(0, count($quarantinedfiles));


    }

    public function test_manager_scan_data_no_virus() {
        // Run mock scanning.
        $this->assertEmpty(\core\antivirus\manager::scan_data('OK'));
    }

    public function test_manager_scan_data_error() {
        // Run mock scanning.
        $this->assertEmpty(\core\antivirus\manager::scan_data('ERROR'));
    }

    public function test_manager_scan_data_virus() {
        // Run mock scanning.
        $this->expectException(\core\antivirus\scanner_exception::class);
        $this->assertEmpty(\core\antivirus\manager::scan_data('FOUND'));

>     }
    }
> 
}
>     public function test_manager_send_message_to_user_email_scan_data_virus() {
>         $sink = $this->redirectEmails();
>         set_config('notifyemail', 'fake@example.com', 'antivirus');
>         $exception = null;
>         try {
>             \core\antivirus\manager::scan_data('FOUND');
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         $result = $sink->get_messages();
>         $this->assertCount(1, $result);
>         $this->assertStringContainsString('fake@example.com', $result[0]->to);
>         $sink->close();
>     }
> 
>     public function test_manager_send_message_to_admin_email_scan_data_virus() {
>         $sink = $this->redirectMessages();
>         $exception = null;
>         try {
>             \core\antivirus\manager::scan_data('FOUND');
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         $result = $sink->get_messages();
>         $admins = array_keys(get_admins());
>         $this->assertCount(1, $admins);
>         $this->assertCount(1, $result);
>         $this->assertEquals($result[0]->useridto, reset($admins));
>         $sink->close();
>     }
> 
>     public function test_manager_quarantine_data_virus() {
>         set_config('enablequarantine', true, 'antivirus');
>         $exception = null;
>         try {
>             \core\antivirus\manager::scan_data('FOUND');
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         // Quarantined files.
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(1, count($quarantinedfiles));
>         // Clean up.
>         \core\antivirus\quarantine::clean_up_quarantine_folder(time());
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(0, count($quarantinedfiles));
>     }
> 
> 
>     public function test_manager_none_quarantine_data_virus() {
>         $exception = null;
>         try {
>             \core\antivirus\manager::scan_data('FOUND');
>         } catch (\core\antivirus\scanner_exception $ex) {
>             $exception = $ex;
>         }
>         $this->assertNotEmpty($exception);
>         // No Quarantined files.
>         $quarantinedfiles = \core\antivirus\quarantine::get_quarantined_files();
>         $this->assertEquals(0, count($quarantinedfiles));