backdrop_get_favicon in core/includes/common.inc

Gets the file location and mime type for site favicon.

check_url in core/includes/common.inc

Strips dangerous protocols from a URI and encodes it for output to HTML.

CommonXssUnitTestCase::testBadProtocolStripping in core/modules/simpletest/tests/common.test

Check that harmful protocols are stripped.

drupal_strip_dangerous_protocols in core/includes/drupal.inc

Strips dangerous protocols (e.g. 'javascript:') from a URI.

filter_xss_bad_protocol in core/includes/common.inc

Processes an HTML attribute value and strips dangerous protocols from URLs.

theme_form in core/includes/form.inc

Returns HTML for a form.

url_is_external in core/includes/common.inc

Returns TRUE if a path is external to Backdrop (e.g. http://example.com).

_filter_format_editor_link_url_validate in core/modules/filter/filter.pages.inc

Element validation function.