Calculate severity score for date_invalid error

chrome/browser/ssl/ssl_blocking_page.cc

 // 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/build_time.h"
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "base/i18n/time_formatting.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_preferences_util.h"
+#include "chrome/browser/ssl/ssl_error_classification.h"
 #include "chrome/browser/ssl/ssl_error_info.h"
 #include "chrome/common/chrome_switches.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"
@@ skipping 175 matching lines @@
       else
         RecordSSLBlockingPageEventStats(DONT_PROCEED_AUTHORITY);
       break;
     }
     default: {
       break;
     }
   }
 }
 
-// Events for UMA. Do not reorder or change!
-enum SSLInterstitialCause {
-  CLOCK_PAST,
-  CLOCK_FUTURE,
-  UNUSED_INTERSTITIAL_CAUSE_ENTRY,
-};
-
-void RecordSSLInterstitialCause(bool overridable, SSLInterstitialCause event) {
-  if (overridable) {
-    UMA_HISTOGRAM_ENUMERATION("interstitial.ssl.cause.overridable",
-                              event,
-                              UNUSED_INTERSTITIAL_CAUSE_ENTRY);
-  } else {
-    UMA_HISTOGRAM_ENUMERATION("interstitial.ssl.cause.nonoverridable",
-                              event,
-                              UNUSED_INTERSTITIAL_CAUSE_ENTRY);
-  }
-}
-
-// The cause of most clock errors (CMOS battery causing clock reset) will
-// fall backwards, not forwards. IsErrorProbablyCausedByClock therefore only
-// returns true for clocks set early, and histograms clocks set far into the
-// future to see if there are more future-clocks than expected.
-bool IsErrorProbablyCausedByClock(bool overridable, int cert_info) {
-  if (SSLErrorInfo::NetErrorToErrorType(cert_info) !=
-      SSLErrorInfo::CERT_DATE_INVALID) {
-    return false;
-  }
-  const base::Time current_time = base::Time::NowFromSystemTime();
-  const base::Time build_time = base::GetBuildTime();
-  if (current_time < build_time - base::TimeDelta::FromDays(2)) {
-    RecordSSLInterstitialCause(overridable, CLOCK_PAST);
-    return true;
-  }
-  if (current_time > build_time + base::TimeDelta::FromDays(365))
-    RecordSSLInterstitialCause(overridable, CLOCK_FUTURE);
-  return false;
-}
-
 }  // 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,
@@ skipping 250 matching lines @@
   load_time_data.SetString("trialCondition", trial_condition_);
 
   // Shared values for both the overridable and non-overridable versions.
   load_time_data.SetBoolean("ssl", true);
   load_time_data.SetBoolean(
       "overridable", overridable_ && !strict_enforcement_);
   load_time_data.SetString(
       "tabTitle", l10n_util::GetStringUTF16(IDS_SSL_V2_TITLE));
   load_time_data.SetString(
       "heading", l10n_util::GetStringUTF16(IDS_SSL_V2_HEADING));
-  if (IsErrorProbablyCausedByClock(
-          overridable_ && !strict_enforcement_, cert_error_)) {
+  if ((SSLErrorClassification::IsUserClockInThePast(
+      overridable_ && !strict_enforcement_, base::Time::NowFromSystemTime()))
+      && (SSLErrorInfo::NetErrorToErrorType(cert_error_) ==
+          SSLErrorInfo::CERT_DATE_INVALID)) {
     load_time_data.SetString("primaryParagraph",
                              l10n_util::GetStringFUTF16(
                                  IDS_SSL_CLOCK_ERROR,
                                  url,
                                  base::TimeFormatShortDate(base::Time::Now())));
   } else {
     load_time_data.SetString(
         "primaryParagraph",
         l10n_util::GetStringFUTF16(IDS_SSL_V2_PRIMARY_PARAGRAPH, url));
   }
@@ skipping 213 matching lines @@
     // sure we don't clear the captive portal flag, since the interstitial was
     // potentially caused by the captive portal.
     captive_portal_detected_ = captive_portal_detected_ ||
         (results->result == captive_portal::RESULT_BEHIND_CAPTIVE_PORTAL);
     // Also keep track of non-HTTP portals and error cases.
     captive_portal_no_response_ = captive_portal_no_response_ ||
         (results->result == captive_portal::RESULT_NO_RESPONSE);
   }
 #endif
 }