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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/omnibox/omnibox_navigation_observer.h"
#include "chrome/browser/history/shortcuts_backend.h"
#include "chrome/browser/history/shortcuts_backend_factory.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/intranet_redirect_detector.h"
#include "chrome/browser/ui/omnibox/alternate_nav_infobar_delegate.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/web_contents.h"
#include "net/base/load_flags.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request.h"
// Helpers --------------------------------------------------------------------
namespace {
// HTTP 2xx, 401, and 407 all indicate that the target address exists.
bool ResponseCodeIndicatesSuccess(int response_code) {
return ((response_code / 100) == 2) || (response_code == 401) ||
(response_code == 407);
}
// Returns true if |final_url| doesn't represent an ISP hijack of
// |original_url|, based on the IntranetRedirectDetector's RedirectOrigin().
bool IsValidNavigation(const GURL& original_url, const GURL& final_url) {
const GURL& redirect_url(IntranetRedirectDetector::RedirectOrigin());
return !redirect_url.is_valid() ||
net::registry_controlled_domains::SameDomainOrHost(
original_url, final_url,
net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES) ||
!net::registry_controlled_domains::SameDomainOrHost(
final_url, redirect_url,
net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
}
} // namespace
// OmniboxNavigationObserver --------------------------------------------------
OmniboxNavigationObserver::OmniboxNavigationObserver(
Profile* profile,
const string16& text,
const AutocompleteMatch& match,
const GURL& alternate_nav_url)
: text_(text),
match_(match),
alternate_nav_url_(alternate_nav_url),
shortcuts_backend_(ShortcutsBackendFactory::GetForProfile(profile)),
load_state_(LOAD_NOT_SEEN),
fetch_state_(FETCH_NOT_COMPLETE) {
if (alternate_nav_url_.is_valid()) {
fetcher_.reset(net::URLFetcher::Create(alternate_nav_url,
net::URLFetcher::HEAD, this));
fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES);
fetcher_->SetStopOnRedirect(true);
}
// We need to start by listening to AllSources, since we don't know which tab
// the navigation might occur in.
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
content::NotificationService::AllSources());
}
OmniboxNavigationObserver::~OmniboxNavigationObserver() {
}
void OmniboxNavigationObserver::OnSuccessfulNavigation() {
if (shortcuts_backend_)
shortcuts_backend_->OnOmniboxNavigation(text_, match_);
}
void OmniboxNavigationObserver::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(content::NOTIFICATION_NAV_ENTRY_PENDING, type);
registrar_.Remove(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
content::NotificationService::AllSources());
content::NavigationController* controller =
content::Source<content::NavigationController>(source).ptr();
if (fetcher_) {
fetcher_->SetRequestContext(
controller->GetBrowserContext()->GetRequestContext());
}
WebContentsObserver::Observe(controller->GetWebContents());
// NavigateToPendingEntry() will be called for this load as well.
}
void OmniboxNavigationObserver::NavigationEntryCommitted(
const content::LoadCommittedDetails& load_details) {
load_state_ = LOAD_COMMITTED;
if (ResponseCodeIndicatesSuccess(load_details.http_status_code) &&
IsValidNavigation(match_.destination_url, load_details.entry->GetURL()))
OnSuccessfulNavigation();
if (!fetcher_ || (fetch_state_ != FETCH_NOT_COMPLETE))
OnAllLoadingFinished(); // deletes |this|!
}
void OmniboxNavigationObserver::WebContentsDestroyed(
content::WebContents* web_contents) {
delete this;
}
void OmniboxNavigationObserver::NavigateToPendingEntry(
const GURL& url,
content::NavigationController::ReloadType reload_type) {
if (load_state_ == LOAD_NOT_SEEN) {
load_state_ = LOAD_PENDING;
if (fetcher_)
fetcher_->Start();
} else {
delete this;
}
}
void OmniboxNavigationObserver::OnURLFetchComplete(
const net::URLFetcher* source) {
DCHECK_EQ(fetcher_.get(), source);
const net::URLRequestStatus& status = source->GetStatus();
int response_code = source->GetResponseCode();
fetch_state_ =
(status.is_success() && ResponseCodeIndicatesSuccess(response_code)) ||
((status.status() == net::URLRequestStatus::CANCELED) &&
((response_code / 100) == 3) &&
IsValidNavigation(alternate_nav_url_, source->GetURL())) ?
FETCH_SUCCEEDED : FETCH_FAILED;
if (load_state_ == LOAD_COMMITTED)
OnAllLoadingFinished(); // deletes |this|!
}
void OmniboxNavigationObserver::OnAllLoadingFinished() {
if (fetch_state_ == FETCH_SUCCEEDED) {
AlternateNavInfoBarDelegate::Create(
InfoBarService::FromWebContents(web_contents()), alternate_nav_url_);
}
delete this;
}
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