function SaveUploadTest::testHandleDangerousFile

Test dangerous file handling.

File

core/modules/file/tests/src/Functional/SaveUploadTest.php, line 256

Class

SaveUploadTest

Tests the file_save_upload() function.

Namespace

Code

public function testHandleDangerousFile() {
    $config = $this->config('system.file');
    // Allow the .php extension and make sure it gets munged and given a .txt
    // extension for safety. Also check to make sure its MIME type was changed.
    $edit = [
        'file_test_replace' => FileSystemInterface::EXISTS_REPLACE,
        'files[file_test_upload]' => \Drupal::service('file_system')->realpath($this->phpfile->uri),
        'is_image_file' => FALSE,
        'extensions' => 'php',
    ];
    $this->drupalPostForm('file-test/upload', $edit, t('Submit'));
    $this->assertSession()
        ->statusCodeEquals(200);
    $message = t('For security reasons, your upload has been renamed to') . ' <em class="placeholder">' . $this->phpfile->filename . '_.txt' . '</em>';
    $this->assertRaw($message, 'Dangerous file was renamed.');
    $this->assertSession()
        ->pageTextContains('File name is php-2.php_.txt.');
    $this->assertRaw(t('File MIME type is text/plain.'), "Dangerous file's MIME type was changed.");
    $this->assertRaw(t('You WIN!'), 'Found the success message.');
    // Check that the correct hooks were called.
    $this->assertFileHooksCalled([
        'validate',
        'insert',
    ]);
    // Ensure dangerous files are not renamed when insecure uploads is TRUE.
    // Turn on insecure uploads.
    $config->set('allow_insecure_uploads', 1)
        ->save();
    // Reset the hook counters.
    file_test_reset();
    $this->drupalPostForm('file-test/upload', $edit, t('Submit'));
    $this->assertSession()
        ->statusCodeEquals(200);
    $this->assertNoRaw(t('For security reasons, your upload has been renamed'), 'Found no security message.');
    $this->assertSession()
        ->pageTextContains('File name is php-2.php.');
    $this->assertRaw(t('You WIN!'), 'Found the success message.');
    // Check that the correct hooks were called.
    $this->assertFileHooksCalled([
        'validate',
        'insert',
    ]);
    // Reset the hook counters.
    file_test_reset();
    // Even with insecure uploads allowed, the .php file should not be uploaded
    // if it is not explicitly included in the list of allowed extensions.
    $edit['extensions'] = 'foo';
    $this->drupalPostForm('file-test/upload', $edit, t('Submit'));
    $this->assertSession()
        ->statusCodeEquals(200);
    $message = t('Only files with the following extensions are allowed:') . ' <em class="placeholder">' . $edit['extensions'] . '</em>';
    $this->assertRaw($message, 'Cannot upload a disallowed extension');
    $this->assertRaw(t('Epic upload FAIL!'), 'Found the failure message.');
    // Check that the correct hooks were called.
    $this->assertFileHooksCalled([
        'validate',
    ]);
    // Reset the hook counters.
    file_test_reset();
    // Turn off insecure uploads, then try the same thing as above (ensure that
    // the .php file is still rejected since it's not in the list of allowed
    // extensions).
    $config->set('allow_insecure_uploads', 0)
        ->save();
    $this->drupalPostForm('file-test/upload', $edit, t('Submit'));
    $this->assertSession()
        ->statusCodeEquals(200);
    $message = t('Only files with the following extensions are allowed:') . ' <em class="placeholder">' . $edit['extensions'] . '</em>';
    $this->assertRaw($message, 'Cannot upload a disallowed extension');
    $this->assertRaw(t('Epic upload FAIL!'), 'Found the failure message.');
    // Check that the correct hooks were called.
    $this->assertFileHooksCalled([
        'validate',
    ]);
    // Reset the hook counters.
    file_test_reset();
}