contact_personal_form in core/modules/contact/contact.pages.inc

Form constructor for the personal contact form.

contact_site_form in core/modules/contact/contact.pages.inc

Form constructor for the site-wide contact form.

FloodFunctionalTest::testCleanUp in core/modules/system/tests/system.test

Test flood control mechanism clean-up.

user_login_authenticate_validate in core/modules/user/user.module

Second phase validation handler on the login form.

user_pass_validate in core/modules/user/user.pages.inc

Form validation handler for user_pass().

user_validate_current_pass in core/modules/user/user.module

Form validation handler for the current password on the user_account_form().