WIP: NSS trust store integration for path builder.

net/cert/internal/trust_store_static.h

+// Copyright 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.
+
+#ifndef NET_CERT_INTERNAL_TRUST_STORE_STATIC_H_
+#define NET_CERT_INTERNAL_TRUST_STORE_STATIC_H_
+
+#include <map>
+
+#include "base/memory/ref_counted.h"
+#include "base/strings/string_piece.h"
+#include "net/base/net_export.h"
+#include "net/cert/internal/cert_issuer_source_static.h"
+#include "net/cert/internal/parsed_certificate.h"
+#include "net/cert/internal/trust_store.h"
+
+namespace net {
+
+namespace der {
+class Input;
+}
+
+// A very simple implementation of a TrustStoreStatic, which contains a set of
+// trusted certificates.
+class NET_EXPORT TrustStoreStatic : public TrustStore {
+ public:
+  TrustStoreStatic();
+  ~TrustStoreStatic() override;
+
+  // Adds a trusted certificate to the store.
+  void AddTrustedCertificate(scoped_refptr<ParsedCertificate> anchor);
+
+  // TrustStore implementation:
+  void IsTrustedCertificate(
+      scoped_refptr<ParsedCertificate> cert,
+      const TrustCallback& callback,
+      bool* out_trusted,
+      std::unique_ptr<TrustStore::Request>* out_req) const override;
+
+  // CertIssuerSource implementation:
+  void SyncGetIssuersOf(const ParsedCertificate* cert,
+                        ParsedCertificateList* issuers) override;
+  void AsyncGetIssuersOf(
+      scoped_refptr<ParsedCertificate> cert,
+      const IssuerCallback& callback,
+      std::unique_ptr<CertIssuerSource::Request>* out_req) override;
+
+ private:
+  using Key = std::tuple<base::StringPiece, base::StringPiece>;
+
+  static Key GetKey(const ParsedCertificate* cert);
+
+  // TODO(mattm): use unordered_map. Requires making a hash function for Key.
+  // Multimap from (normalized subject, SPKI) -> ParsedCertificate.
+  std::map<Key, scoped_refptr<ParsedCertificate>> anchors_;
+
+  CertIssuerSourceStatic cert_source_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrustStoreStatic);
+};
+
+}  // namespace net
+
+#endif  // NET_CERT_INTERNAL_TRUST_STORE_STATIC_H_