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PhabricatorFaviconController.php
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			<?php

			final class PhabricatorFaviconController
			extends PhabricatorController {

			public function shouldRequireLogin() {
			return false;
			}

			public function handleRequest(AphrontRequest $request) {
			// See PHI1719. Phabricator uses "<link /"> tags in the document body
			// to direct user agents to icons, like this:
			//
			// <link rel="icon" href="..." />
			//
			// However, some software requests the hard-coded path "/favicon.ico"
			// directly. To tidy the logs, serve some reasonable response rather than
			// a 404.

			// NOTE: Right now, this only works for the "PhabricatorPlatformSite".
			// Other sites (like custom Phame blogs) won't currently route this
			// path.

			$ref = id(new PhabricatorFaviconRef())
			->setWidth(64)
			->setHeight(64);

			id(new PhabricatorFaviconRefQuery())
			->withRefs(array($ref))
			->execute();

			return id(new AphrontRedirectResponse())
			->setIsExternal(true)
			->setURI($ref->getURI());
			}
			}