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// 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.
#include "net/quic/test_tools/crypto_test_utils.h"
#include "base/string_piece.h"
#include "net/quic/crypto/quic_decrypter.h"
#include "net/quic/crypto/quic_encrypter.h"
#include "net/quic/quic_crypto_client_stream.h"
#include "net/quic/quic_crypto_server_stream.h"
#include "net/quic/quic_crypto_stream.h"
#include "net/quic/test_tools/quic_test_utils.h"
#include "net/quic/test_tools/simple_quic_framer.h"
using base::StringPiece;
using std::string;
namespace net {
namespace test {
namespace {
class TestSession : public QuicSession {
public:
TestSession(QuicConnection* connection, bool is_server)
: QuicSession(connection, is_server) {
}
MOCK_METHOD1(CreateIncomingReliableStream,
ReliableQuicStream*(QuicStreamId id));
MOCK_METHOD0(GetCryptoStream, QuicCryptoStream*());
MOCK_METHOD0(CreateOutgoingReliableStream, ReliableQuicStream*());
};
// CommunicateHandshakeMessages moves messages from |a| to |b| and back until
// |a|'s handshake has completed.
void CommunicateHandshakeMessages(
PacketSavingConnection* a_conn,
QuicCryptoStream* a,
PacketSavingConnection* b_conn,
QuicCryptoStream* b) {
scoped_ptr<SimpleQuicFramer> framer;
for (size_t i = 0; !a->handshake_complete(); i++) {
framer.reset(new SimpleQuicFramer);
ASSERT_LT(i, a_conn->packets_.size());
ASSERT_TRUE(framer->ProcessPacket(*a_conn->packets_[i]));
ASSERT_EQ(1u, framer->stream_frames().size());
scoped_ptr<CryptoHandshakeMessage> a_msg(framer->HandshakeMessage(0));
b->OnHandshakeMessage(*(a_msg.get()));
framer.reset(new SimpleQuicFramer);
ASSERT_LT(i, b_conn->packets_.size());
ASSERT_TRUE(framer->ProcessPacket(*b_conn->packets_[i]));
ASSERT_EQ(1u, framer->stream_frames().size());
scoped_ptr<CryptoHandshakeMessage> b_msg(framer->HandshakeMessage(0));
a->OnHandshakeMessage(*(b_msg.get()));
}
}
} // anonymous namespace
// static
void CryptoTestUtils::HandshakeWithFakeServer(
PacketSavingConnection* client_conn,
QuicCryptoClientStream* client) {
QuicGuid guid(1);
IPAddressNumber ip;
CHECK(ParseIPLiteralToNumber("192.0.2.33", &ip));
IPEndPoint addr = IPEndPoint(ip, 1);
PacketSavingConnection* server_conn =
new PacketSavingConnection(guid, addr, true);
TestSession server_session(server_conn, true);
QuicCryptoServerStream server(&server_session);
// The client's handshake must have been started already.
CHECK_NE(0u, client_conn->packets_.size());
CommunicateHandshakeMessages(client_conn, client, server_conn, &server);
CompareClientAndServerKeys(client, &server);
}
// static
void CryptoTestUtils::HandshakeWithFakeClient(
PacketSavingConnection* server_conn,
QuicCryptoServerStream* server) {
QuicGuid guid(1);
IPAddressNumber ip;
CHECK(ParseIPLiteralToNumber("192.0.2.33", &ip));
IPEndPoint addr = IPEndPoint(ip, 1);
PacketSavingConnection* client_conn =
new PacketSavingConnection(guid, addr, false);
TestSession client_session(client_conn, true);
QuicCryptoClientStream client(&client_session, "test.example.com");
CHECK(client.CryptoConnect());
CHECK_EQ(1u, client_conn->packets_.size());
CommunicateHandshakeMessages(client_conn, &client, server_conn, server);
CompareClientAndServerKeys(&client, server);
}
// static
string CryptoTestUtils::GetValueForTag(const CryptoHandshakeMessage& message,
CryptoTag tag) {
CryptoTagValueMap::const_iterator it = message.tag_value_map().find(tag);
if (it == message.tag_value_map().end()) {
return string();
}
return it->second;
}
void CryptoTestUtils::CompareClientAndServerKeys(
QuicCryptoClientStream* client,
QuicCryptoServerStream* server) {
StringPiece client_encrypter_key =
client->crypto_negotiated_params_.encrypter->GetKey();
StringPiece client_encrypter_iv =
client->crypto_negotiated_params_.encrypter->GetNoncePrefix();
StringPiece client_decrypter_key =
client->crypto_negotiated_params_.decrypter->GetKey();
StringPiece client_decrypter_iv =
client->crypto_negotiated_params_.decrypter->GetNoncePrefix();
StringPiece server_encrypter_key =
server->crypto_negotiated_params_.encrypter->GetKey();
StringPiece server_encrypter_iv =
server->crypto_negotiated_params_.encrypter->GetNoncePrefix();
StringPiece server_decrypter_key =
server->crypto_negotiated_params_.decrypter->GetKey();
StringPiece server_decrypter_iv =
server->crypto_negotiated_params_.decrypter->GetNoncePrefix();
CompareCharArraysWithHexError("client write key",
client_encrypter_key.data(),
client_encrypter_key.length(),
server_decrypter_key.data(),
server_decrypter_key.length());
CompareCharArraysWithHexError("client write IV",
client_encrypter_iv.data(),
client_encrypter_iv.length(),
server_decrypter_iv.data(),
server_decrypter_iv.length());
CompareCharArraysWithHexError("server write key",
server_encrypter_key.data(),
server_encrypter_key.length(),
client_decrypter_key.data(),
client_decrypter_key.length());
CompareCharArraysWithHexError("server write IV",
server_encrypter_iv.data(),
server_encrypter_iv.length(),
client_decrypter_iv.data(),
client_decrypter_iv.length());
}
} // namespace test
} // namespace net
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