Add interstitial info to certificate reports

chrome/browser/ssl/cert_logger.proto

 // Copyright 2015 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.
 //
 // This protobuffer is intended to store reports from Chrome users of
 // certificate errors. A report will be sent from Chrome when it gets
 // e.g. a certificate for google.com that chains up to a root CA not expected by
 // Chrome for that origin, such as DigiNotar (compromised in July 2011), or
 // other pinning errors such as a blacklisted cert in the chain, or
 // (when opted in) other certificate validation errors like an expired
 // cert. The report from the user will include the hostname being accessed,
 // the full certificate chain (in PEM format), and the
 // timestamp of when the client tried to access the site. A response is
 // generated by the frontend and logged, including validation and error checking
 // done on the client's input data.
 
 syntax = "proto2";
 
 // Chrome requires this.
 option optimize_for = LITE_RUNTIME;
 
 // Protocol types
+
+message CertLoggerInterstitialInfo {
+  // The different reasons that an SSL warning interstitial could be shown to
+  // a user.
+  enum InterstitialReason {
+    // A standard SSL interstitial
+    INTERSTITIAL_SSL = 1;
+    // An interstitial alerting the user that they are in a captive portal
+    INTERSTITIAL_CAPTIVE_PORTAL = 2;
+    // An interstitial telling the user to update their system clock
+    INTERSTITIAL_CLOCK = 3;
+  }
+
+  // The type of interstitial that was shown
+  optional InterstitialReason interstitial_reason = 1;
+  // True if the user clicked through to the offending website
+  optional bool user_proceeded = 2;
+  // True if the user was shown an option to click through
+  optional bool overridable = 3;
+}
+
 message CertLoggerRequest {
   // The hostname being accessed (required as the cert could be valid for
   // multiple hosts, e.g. a wildcard or a SubjectAltName.
   required string hostname = 1;
   // The certificate chain as a series of PEM-encoded certificates, including
   // intermediates but not necessarily the root.
   required string cert_chain = 2;
   // The time (in usec since the epoch) when the client attempted to access the
   // site generating the pinning error.
   required int64 time_usec = 3;
@@ skipping 16 matching lines @@
     ERR_CERT_DATE_INVALID = 9;
     ERR_CERT_VALIDITY_TOO_LONG = 10;
     ERR_CERT_UNABLE_TO_CHECK_REVOCATION = 11;
     ERR_CERT_NO_REVOCATION_MECHANISM = 12;
     ERR_CERT_NON_UNIQUE_NAME = 13;
   };
 
   // Certificate errors encountered (if any) when validating this
   // certificate chain.
   repeated CertError cert_error = 6;
+
+  // Information about the interstitial that was shown to the user for
+  // this certificate error.
+  optional CertLoggerInterstitialInfo interstitial_info = 7;
 };