Certificate Transparency: Threading the CT verifier into the SSL client socket.

net/cert/cert_status_flags.h

 // 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.
 
 #ifndef NET_CERT_CERT_STATUS_FLAGS_H_
 #define NET_CERT_CERT_STATUS_FLAGS_H_
 
 #include "base/basictypes.h"
 #include "net/base/net_export.h"
 
@@ skipping 21 matching lines @@
 // 1 << 9 was used for CERT_STATUS_NOT_IN_DNS
 static const CertStatus CERT_STATUS_NON_UNIQUE_NAME            = 1 << 10;
 static const CertStatus CERT_STATUS_WEAK_KEY                   = 1 << 11;
 static const CertStatus CERT_STATUS_WEAK_DH_KEY                = 1 << 12;
 static const CertStatus CERT_STATUS_PINNED_KEY_MISSING         = 1 << 13;
 
 // Bits 16 to 31 are for non-error statuses.
 static const CertStatus CERT_STATUS_IS_EV                      = 1 << 16;
 static const CertStatus CERT_STATUS_REV_CHECKING_ENABLED       = 1 << 17;
 // bit 18 was CERT_STATUS_IS_DNSSEC.
+// Bits 19 to 21 are for Certificate Transparency. Note that while
+// the current state can be represented with only 2 bits, the mapping
+// from bit to state will not be straightforward.

[Ryan Sleevi, 2013/11/25 06:49:31]

Why not? Can we not just encapsulate it in a helper function like we do for
CertStatusMinorError (which just handles masking)

[Eran M. (Google), 2013/11/25 17:18:33]

Done, but the const names aren't pretty - PTAL.

+static const CertStatus CERT_STATUS_HAS_ANY_SCT              = 1 << 19;
+static const CertStatus CERT_STATUS_HAS_SCT_FROM_KNOWN_LOG   = 1 << 20;
+static const CertStatus CERT_STATUS_HAS_VALID_SCT            = 1 << 21;
 
 // Returns true if the specified cert status has an error set.
 static inline bool IsCertStatusError(CertStatus status) {
   return (CERT_STATUS_ALL_ERRORS & status) != 0;
 }
 
 // IsCertStatusMinorError returns true iff |cert_status| indicates a condition
 // that should typically be ignored by automated requests. (i.e. a revocation
 // check failure.)
 NET_EXPORT bool IsCertStatusMinorError(CertStatus cert_status);
 
 // Maps a network error code to the equivalent certificate status flag.  If
 // the error code is not a certificate error, it is mapped to 0.
 NET_EXPORT CertStatus MapNetErrorToCertStatus(int error);
 
 // Maps the most serious certificate error in the certificate status flags
 // to the equivalent network error code.
 NET_EXPORT int MapCertStatusToNetError(CertStatus cert_status);
 
 }  // namespace net
 
 #endif  // NET_CERT_CERT_STATUS_FLAGS_H_