Cert - protobufs to serialize and deserialize CertVerifierCache.

net/cert/cert_verifier_cache_persister.h

+// Copyright (c) 2016 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.
+
+// CertVerifierCachePersister maintains an in memory database containing the
+// list of hosts whose cerificates have been verified. This singleton object
+// deals with writing that data out to disk as needed and loading it at startup.
+//
+// At startup we need to load the certificate verification results from the
+// disk and we deserialize the data and then pouplate
+// MultiThreadedCertVerifier's cache.
+//
+// At shutdown, we serialize MultiThreadedCertVerifier's cache and then write
+// that data to disk.
+
+#ifndef NET_CERT_CERT_VERIFIER_CACHE_PERSISTER_H_
+#define NET_CERT_CERT_VERIFIER_CACHE_PERSISTER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "net/base/net_export.h"
+
+namespace net {
+
+class MultiThreadedCertVerifier;
+
+class NET_EXPORT_PRIVATE CertVerifierCachePersister {
+ public:
+  typedef std::vector<std::string> CertVector;
+
+  CertVerifierCachePersister(MultiThreadedCertVerifier* verifier);
+  ~CertVerifierCachePersister();
+
+  // Recursively iterate over this |verifier_|'s |cache_| and all children and
+  // write the hierarchical structure into |data|.
+  void SerializeCache(std::string* data);
+
+  // Populates MultiThreadedCertVerifier's |cache_|. Returns true if the |data|
+  // is deserialized correctly.
+  bool LoadCache(const std::string& data);
+
+ private:
+  // |verifier_| whose |cache_| will be serialized/deserialized.
+  MultiThreadedCertVerifier* verifier_;
+
+  DISALLOW_COPY_AND_ASSIGN(CertVerifierCachePersister);
+};
+
+}  // namespace net
+
+#endif  // NET_CERT_CERT_VERIFIER_CACHE_PERSISTER_H_