Convert SignedCertificateClass to be ref_counted, and add an SCTStore in which to store them. Add S…

net/cert/signed_certificate_timestamp.h

 // Copyright 2013 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_SIGNED_CERTIFICATE_TIMESTAMP_H_
 #define NET_CERT_SIGNED_CERTIFICATE_TIMESTAMP_H_
 
 #include <string>
 #include <vector>
 
+#include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "net/base/hash_value.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
 // Structures related to Certificate Transparency (RFC6962).
 namespace ct {
 
 // LogEntry struct in RFC 6962, Section 3.1
@@ skipping 41 matching lines @@
   DigitallySigned();
   ~DigitallySigned();
 
   HashAlgorithm hash_algorithm;
   SignatureAlgorithm signature_algorithm;
   // 'signature' field.
   std::string signature_data;
 };
 
 // SignedCertificateTimestamp struct in RFC 6962, Section 3.2.
-struct NET_EXPORT SignedCertificateTimestamp {
+struct NET_EXPORT SignedCertificateTimestamp
+    : public base::RefCountedThreadSafe<SignedCertificateTimestamp> {
+  // Predicate functor used in maps when SignedCertificateTimestamp is used as
+  // the key.
+  struct NET_EXPORT LessThan {
+    bool operator()(const scoped_refptr<SignedCertificateTimestamp>& lhs,
+        const scoped_refptr<SignedCertificateTimestamp>& rhs) const;
+
+  };
+
   // Version enum in RFC 6962, Section 3.2.
   enum Version {
     SCT_VERSION_1 = 0,
   };
 
   // Source of the SCT - supplementary, not defined in CT RFC.
   enum Origin {
     SCT_EMBEDDED = 0,
     SCT_FROM_TLS_HANDSHAKE = 1,
     SCT_FROM_OCSP_RESPONSE = 2,
   };
 
   SignedCertificateTimestamp();
-  ~SignedCertificateTimestamp();
 
   Version version;
   std::string log_id;
   base::Time timestamp;
   std::string extensions;
   DigitallySigned signature;
   // The origin should not participate in equality checks
   // as the same SCT can be provided from multiple sources.
   Origin origin;
+
+ private:
+  ~SignedCertificateTimestamp();
+  friend class base::RefCountedThreadSafe<SignedCertificateTimestamp>;
+  DISALLOW_COPY_AND_ASSIGN(SignedCertificateTimestamp);
 };
 
 }  // namespace ct
 
 }  // namespace net
 
 #endif  // NET_CERT_SIGNED_CERTIFICATE_TIMESTAMP_H_