chromium/chrome/browser/intranet_redirect_detector.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_INTRANET_REDIRECT_DETECTOR_H_
#define CHROME_BROWSER_INTRANET_REDIRECT_DETECTOR_H_

#include <map>
#include <memory>
#include <string>
#include <vector>

#include "base/memory/weak_ptr.h"
#include "build/build_config.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "services/network/public/cpp/network_connection_tracker.h"
#include "services/network/public/mojom/host_resolver.mojom.h"
#include "url/gurl.h"

namespace network {
class SimpleURLLoader;
}

class PrefRegistrySimple;

#if !(BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || \
      BUILDFLAG(IS_CHROMEOS))
#error "IntranetRedirectDetector should only be built on Desktop platforms."
#endif

// This object is responsible for determining whether the user is on a network
// that redirects requests for intranet hostnames to another site, and if so,
// tracking what that site is (including across restarts via a pref).  For
// example, the user's ISP might convert a request for "http://query/" into a
// 302 redirect to "http://isp.domain.com/search?q=query" in order to display
// custom pages on typos, nonexistent sites, etc.
//
// We use this information in the OmniboxNavigationObserver to avoid displaying
// infobars for these cases.  Our infobars are designed to allow users to get at
// intranet sites when they were erroneously taken to a search result page.  In
// these cases, however, users would be shown a confusing and useless infobar
// when they really did mean to do a search.
//
// Consumers should call RedirectOrigin(), which is guaranteed to synchronously
// return a value at all times (even during startup or in unittest mode).  If no
// redirection is in place, the returned GURL will be empty.
class IntranetRedirectDetector
    : public network::NetworkConnectionTracker::NetworkConnectionObserver,
      public network::mojom::DnsConfigChangeManagerClient { … };

#endif  // CHROME_BROWSER_INTRANET_REDIRECT_DETECTOR_H_