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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/ssl/ssl_blocking_page.h"
#include "base/i18n/rtl.h"
#include "base/metrics/histogram.h"
#include "base/string_piece.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/renderer_preferences_util.h"
#include "chrome/browser/ssl/ssl_error_info.h"
#include "chrome/common/jstemplate_builder.h"
#include "content/public/browser/cert_store.h"
#include "content/public/browser/interstitial_page.h"
#include "content/public/browser/navigation_controller.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/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/ssl_status.h"
#include "grit/browser_resources.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
using content::InterstitialPage;
using content::NavigationController;
using content::NavigationEntry;
namespace {
enum SSLBlockingPageEvent {
SHOW,
PROCEED,
DONT_PROCEED,
UNUSED_ENUM,
};
void RecordSSLBlockingPageStats(SSLBlockingPageEvent event) {
UMA_HISTOGRAM_ENUMERATION("interstial.ssl", event, UNUSED_ENUM);
}
} // namespace
// Note that we always create a navigation entry with SSL errors.
// No error happening loading a sub-resource triggers an interstitial so far.
SSLBlockingPage::SSLBlockingPage(
content::WebContents* web_contents,
int cert_error,
const net::SSLInfo& ssl_info,
const GURL& request_url,
bool overridable,
bool strict_enforcement,
const base::Callback<void(bool)>& callback)
: callback_(callback),
web_contents_(web_contents),
cert_error_(cert_error),
ssl_info_(ssl_info),
request_url_(request_url),
overridable_(overridable),
strict_enforcement_(strict_enforcement) {
RecordSSLBlockingPageStats(SHOW);
interstitial_page_ = InterstitialPage::Create(
web_contents_, true, request_url, this);
interstitial_page_->Show();
}
SSLBlockingPage::~SSLBlockingPage() {
if (!callback_.is_null()) {
// The page is closed without the user having chosen what to do, default to
// deny.
NotifyDenyCertificate();
}
}
std::string SSLBlockingPage::GetHTMLContents() {
// Let's build the html error page.
DictionaryValue strings;
SSLErrorInfo error_info = SSLErrorInfo::CreateError(
SSLErrorInfo::NetErrorToErrorType(cert_error_), ssl_info_.cert,
request_url_);
strings.SetString("headLine", error_info.title());
strings.SetString("description", error_info.details());
strings.SetString("moreInfoTitle",
l10n_util::GetStringUTF16(IDS_CERT_ERROR_EXTRA_INFO_TITLE));
SetExtraInfo(&strings, error_info.extra_information());
int resource_id;
if (overridable_ && !strict_enforcement_) {
resource_id = IDR_SSL_ROAD_BLOCK_HTML;
strings.SetString("title",
l10n_util::GetStringUTF16(IDS_SSL_BLOCKING_PAGE_TITLE));
strings.SetString("proceed",
l10n_util::GetStringUTF16(IDS_SSL_BLOCKING_PAGE_PROCEED));
strings.SetString("exit",
l10n_util::GetStringUTF16(IDS_SSL_BLOCKING_PAGE_EXIT));
strings.SetString("shouldNotProceed",
l10n_util::GetStringUTF16(
IDS_SSL_BLOCKING_PAGE_SHOULD_NOT_PROCEED));
} else {
resource_id = IDR_SSL_ERROR_HTML;
strings.SetString("title",
l10n_util::GetStringUTF16(IDS_SSL_ERROR_PAGE_TITLE));
strings.SetString("back",
l10n_util::GetStringUTF16(IDS_SSL_ERROR_PAGE_BACK));
if (strict_enforcement_) {
strings.SetString("cannotProceed",
l10n_util::GetStringUTF16(
IDS_SSL_ERROR_PAGE_CANNOT_PROCEED));
}
}
strings.SetString("textdirection", base::i18n::IsRTL() ? "rtl" : "ltr");
base::StringPiece html(
ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id));
return jstemplate_builder::GetI18nTemplateHtml(html, &strings);
}
void SSLBlockingPage::OverrideEntry(NavigationEntry* entry) {
int cert_id = content::CertStore::GetInstance()->StoreCert(
ssl_info_.cert, web_contents_->GetRenderProcessHost()->GetID());
entry->GetSSL().security_style =
content::SECURITY_STYLE_AUTHENTICATION_BROKEN;
entry->GetSSL().cert_id = cert_id;
entry->GetSSL().cert_status = ssl_info_.cert_status;
entry->GetSSL().security_bits = ssl_info_.security_bits;
content::NotificationService::current()->Notify(
content::NOTIFICATION_SSL_VISIBLE_STATE_CHANGED,
content::Source<NavigationController>(&web_contents_->GetController()),
content::NotificationService::NoDetails());
}
void SSLBlockingPage::CommandReceived(const std::string& command) {
if (command == "1") {
interstitial_page_->Proceed();
} else {
interstitial_page_->DontProceed();
}
}
void SSLBlockingPage::OverrideRendererPrefs(
content::RendererPreferences* prefs) {
Profile* profile = Profile::FromBrowserContext(
web_contents_->GetBrowserContext());
renderer_preferences_util::UpdateFromSystemSettings(prefs, profile);
}
void SSLBlockingPage::OnProceed() {
RecordSSLBlockingPageStats(PROCEED);
// Accepting the certificate resumes the loading of the page.
NotifyAllowCertificate();
}
void SSLBlockingPage::OnDontProceed() {
RecordSSLBlockingPageStats(DONT_PROCEED);
NotifyDenyCertificate();
}
void SSLBlockingPage::NotifyDenyCertificate() {
// It's possible that callback_ may not exist if the user clicks "Proceed"
// followed by pressing the back button before the interstitial is hidden.
// In that case the certificate will still be treated as allowed.
if (callback_.is_null())
return;
callback_.Run(false);
callback_.Reset();
}
void SSLBlockingPage::NotifyAllowCertificate() {
DCHECK(!callback_.is_null());
callback_.Run(true);
callback_.Reset();
}
// static
void SSLBlockingPage::SetExtraInfo(
DictionaryValue* strings,
const std::vector<string16>& extra_info) {
DCHECK_LT(extra_info.size(), 5U); // We allow 5 paragraphs max.
const char* keys[5] = {
"moreInfo1", "moreInfo2", "moreInfo3", "moreInfo4", "moreInfo5"
};
int i;
for (i = 0; i < static_cast<int>(extra_info.size()); i++) {
strings->SetString(keys[i], extra_info[i]);
}
for (; i < 5; i++) {
strings->SetString(keys[i], "");
}
}
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