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// Copyright 2014 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/supervised_user/supervised_user_navigation_observer.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/metrics/histogram.h"
#include "base/strings/string_util.h"
#include "chrome/browser/history/history_service.h"
#include "chrome/browser/history/history_service_factory.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/supervised_user/supervised_user_interstitial.h"
#include "chrome/browser/supervised_user/supervised_user_resource_throttle.h"
#include "chrome/browser/supervised_user/supervised_user_service.h"
#include "chrome/browser/supervised_user/supervised_user_service_factory.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "chrome/grit/generated_resources.h"
#include "components/history/core/browser/history_types.h"
#include "components/infobars/core/confirm_infobar_delegate.h"
#include "components/infobars/core/infobar.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/user_metrics.h"
#include "ui/base/l10n/l10n_util.h"
#if !defined(OS_ANDROID)
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/host_desktop.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#endif
using base::Time;
using content::NavigationEntry;
namespace {
// Helpers --------------------------------------------------------------------
#if !defined(OS_ANDROID)
// TODO(bauerb): Get rid of the platform-specific #ifdef here.
// http://crbug.com/313377
void GoBackToSafety(content::WebContents* web_contents) {
// For now, just go back one page (the user didn't retreat from that page,
// so it should be okay).
content::NavigationController* controller =
&web_contents->GetController();
if (controller->CanGoBack()) {
controller->GoBack();
return;
}
// If we can't go back (because we opened a new tab), try to close the tab.
// If this is the last tab on this desktop, open a new window.
chrome::HostDesktopType host_desktop_type =
chrome::GetHostDesktopTypeForNativeView(web_contents->GetNativeView());
const BrowserList* browser_list = BrowserList::GetInstance(host_desktop_type);
if (browser_list->size() == 1) {
Browser* browser = browser_list->get(0);
DCHECK(browser == chrome::FindBrowserWithWebContents(web_contents));
if (browser->tab_strip_model()->count() == 1)
chrome::NewEmptyWindow(browser->profile(), browser->host_desktop_type());
}
web_contents->GetDelegate()->CloseContents(web_contents);
}
#endif
// SupervisedUserWarningInfoBarDelegate ---------------------------------------
class SupervisedUserWarningInfoBarDelegate : public ConfirmInfoBarDelegate {
public:
// Creates a supervised user warning infobar and delegate and adds the infobar
// to |infobar_service|. Returns the infobar if it was successfully added.
static infobars::InfoBar* Create(InfoBarService* infobar_service);
private:
SupervisedUserWarningInfoBarDelegate();
~SupervisedUserWarningInfoBarDelegate() override;
// ConfirmInfoBarDelegate:
bool ShouldExpire(const NavigationDetails& details) const override;
void InfoBarDismissed() override;
base::string16 GetMessageText() const override;
int GetButtons() const override;
base::string16 GetButtonLabel(InfoBarButton button) const override;
bool Accept() override;
DISALLOW_COPY_AND_ASSIGN(SupervisedUserWarningInfoBarDelegate);
};
// static
infobars::InfoBar* SupervisedUserWarningInfoBarDelegate::Create(
InfoBarService* infobar_service) {
return infobar_service->AddInfoBar(
infobar_service->CreateConfirmInfoBar(scoped_ptr<ConfirmInfoBarDelegate>(
new SupervisedUserWarningInfoBarDelegate())));
}
SupervisedUserWarningInfoBarDelegate::SupervisedUserWarningInfoBarDelegate()
: ConfirmInfoBarDelegate() {
}
SupervisedUserWarningInfoBarDelegate::~SupervisedUserWarningInfoBarDelegate() {
}
bool SupervisedUserWarningInfoBarDelegate::ShouldExpire(
const NavigationDetails& details) const {
// SupervisedUserNavigationObserver removes us below.
return false;
}
void SupervisedUserWarningInfoBarDelegate::InfoBarDismissed() {
content::WebContents* web_contents =
InfoBarService::WebContentsFromInfoBar(infobar());
SupervisedUserNavigationObserver::FromWebContents(
web_contents)->WarnInfoBarDismissed();
}
base::string16 SupervisedUserWarningInfoBarDelegate::GetMessageText() const {
return l10n_util::GetStringUTF16(IDS_SUPERVISED_USER_WARN_INFOBAR_MESSAGE);
}
int SupervisedUserWarningInfoBarDelegate::GetButtons() const {
return BUTTON_OK;
}
base::string16 SupervisedUserWarningInfoBarDelegate::GetButtonLabel(
InfoBarButton button) const {
DCHECK_EQ(BUTTON_OK, button);
return l10n_util::GetStringUTF16(IDS_SUPERVISED_USER_WARN_INFOBAR_GO_BACK);
}
bool SupervisedUserWarningInfoBarDelegate::Accept() {
#if defined(OS_ANDROID)
// TODO(bauerb): Get rid of the platform-specific #ifdef here.
// http://crbug.com/313377
NOTIMPLEMENTED();
#else
GoBackToSafety(InfoBarService::WebContentsFromInfoBar(infobar()));
#endif
return false;
}
} // namespace
// SupervisedUserNavigationObserver -------------------------------------------
DEFINE_WEB_CONTENTS_USER_DATA_KEY(SupervisedUserNavigationObserver);
SupervisedUserNavigationObserver::~SupervisedUserNavigationObserver() {
}
SupervisedUserNavigationObserver::SupervisedUserNavigationObserver(
content::WebContents* web_contents)
: WebContentsObserver(web_contents),
warn_infobar_(NULL) {
Profile* profile =
Profile::FromBrowserContext(web_contents->GetBrowserContext());
supervised_user_service_ =
SupervisedUserServiceFactory::GetForProfile(profile);
url_filter_ = supervised_user_service_->GetURLFilterForUIThread();
}
void SupervisedUserNavigationObserver::WarnInfoBarDismissed() {
DCHECK(warn_infobar_);
warn_infobar_ = NULL;
}
void SupervisedUserNavigationObserver::DidCommitProvisionalLoadForFrame(
content::RenderFrameHost* render_frame_host,
const GURL& url,
ui::PageTransition transition_type) {
if (render_frame_host->GetParent())
return;
DVLOG(1) << "DidCommitProvisionalLoadForFrame " << url.spec();
SupervisedUserURLFilter::FilteringBehavior behavior =
url_filter_->GetFilteringBehaviorForURL(url);
if (behavior == SupervisedUserURLFilter::WARN && !warn_infobar_) {
warn_infobar_ = SupervisedUserWarningInfoBarDelegate::Create(
InfoBarService::FromWebContents(web_contents()));
} else if (behavior != SupervisedUserURLFilter::WARN && warn_infobar_) {
InfoBarService::FromWebContents(web_contents())->
RemoveInfoBar(warn_infobar_);
warn_infobar_ = NULL;
}
}
// static
void SupervisedUserNavigationObserver::OnRequestBlocked(
int render_process_host_id,
int render_view_id,
const GURL& url,
SupervisedUserURLFilter::FilteringBehaviorReason reason,
const base::Callback<void(bool)>& callback) {
content::WebContents* web_contents =
tab_util::GetWebContentsByID(render_process_host_id, render_view_id);
if (!web_contents) {
content::BrowserThread::PostTask(
content::BrowserThread::IO, FROM_HERE, base::Bind(callback, false));
return;
}
SupervisedUserNavigationObserver* navigation_observer =
SupervisedUserNavigationObserver::FromWebContents(web_contents);
if (navigation_observer)
navigation_observer->OnRequestBlockedInternal(url);
// Show the interstitial.
SupervisedUserInterstitial::Show(web_contents, url, reason, callback);
}
void SupervisedUserNavigationObserver::OnRequestBlockedInternal(
const GURL& url) {
Time timestamp = Time::Now(); // TODO(bauerb): Use SaneTime when available.
// Create a history entry for the attempt and mark it as such.
history::HistoryAddPageArgs add_page_args(
url, timestamp, web_contents(), 0,
url, history::RedirectList(),
ui::PAGE_TRANSITION_BLOCKED, history::SOURCE_BROWSED,
false);
// Add the entry to the history database.
Profile* profile =
Profile::FromBrowserContext(web_contents()->GetBrowserContext());
HistoryService* history_service =
HistoryServiceFactory::GetForProfile(profile, Profile::IMPLICIT_ACCESS);
// |history_service| is null if saving history is disabled.
if (history_service)
history_service->AddPage(add_page_args);
scoped_ptr<NavigationEntry> entry(NavigationEntry::Create());
entry->SetVirtualURL(url);
entry->SetTimestamp(timestamp);
blocked_navigations_.push_back(entry.release());
SupervisedUserService* supervised_user_service =
SupervisedUserServiceFactory::GetForProfile(profile);
supervised_user_service->DidBlockNavigation(web_contents());
}
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