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// Copyright 2014 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 EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_ICA_H_
#define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_ICA_H_
#include <stddef.h>
#include <map>
#include <string>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_piece.h"
#include "net/base/hash_value.h"
namespace extensions {
namespace api {
namespace cast_channel {
typedef std::map<net::SHA256HashValue,
base::StringPiece,
net::SHA256HashValueLessThan> AuthorityKeysMap;
namespace proto {
// Forward declaration to avoid including generated protobuf header.
class AuthorityKeys;
} // namespace proto
// AuthorityKeyStore is a helper class that is used to store and manipulate
// intermediate CAs (ICAs) information used to authenticate cast devices.
// A static list of ICAs is hardcoded and may optionally be replaced during
// runtime by an extension supplying a protobuf of ICAs information signed with
// known key.
class AuthorityKeyStore {
public:
AuthorityKeyStore();
~AuthorityKeyStore();
// Returns the public key of the ICA whose fingerprint matches |fingerprint|.
// Returns an empty StringPiece if no such ICA is found.
// Note: the returned StringPiece is invalidated if Load() is called.
base::StringPiece GetICAPublicKeyFromFingerprint(
const net::SHA256HashValue& fingerprint);
// Returns the public key of the default / original cast ICA.
// Returns an empty StringPiece if the default cast ICA is not found.
// Note: the returned StringPiece is invalidated if Load() is called.
base::StringPiece GetDefaultICAPublicKey();
// Replaces stored authority keys with the keys loaded from a serialized
// protobuf.
bool Load(const std::string& keys);
private:
// The map of trusted certificate authorities - fingerprints to public keys.
AuthorityKeysMap certificate_authorities_;
// Trusted certificate authorities data passed from the extension.
scoped_ptr<proto::AuthorityKeys> authority_keys_;
DISALLOW_COPY_AND_ASSIGN(AuthorityKeyStore);
};
// Sets trusted certificate authorities.
bool SetTrustedCertificateAuthorities(const std::string& keys,
const std::string& signature);
// Gets the trusted ICA entry for the cert represented by |data|.
// Returns the serialized certificate as bytes if the ICA was found.
// Returns an empty-length StringPiece if the ICA was not found.
base::StringPiece GetTrustedICAPublicKey(const base::StringPiece& data);
// Gets the default trusted ICA for legacy compatibility.
base::StringPiece GetDefaultTrustedICAPublicKey();
} // namespace cast_channel
} // namespace api
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_ICA_H_
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