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/*
* TLS ASIO Stream Wrapper
* (C) 2018-2019 Jack Lloyd
* 2018-2019 Hannes Rantzsch, Tim Oesterreich, Rene Meusel
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_TLS) && defined(BOTAN_HAS_BOOST_ASIO)
#include <botan/asio_stream.h>
#include <botan/tls_callbacks.h>
#include <boost/beast/experimental/test/stream.hpp>
#include <boost/bind.hpp>
namespace Botan_Tests {
namespace net = boost::asio;
using error_code = boost::system::error_code;
constexpr uint8_t TEST_DATA[] = "The story so far: In the beginning the Universe was created. "
"This has made a lot of people very angry and been widely regarded as a bad move.";
constexpr std::size_t TEST_DATA_SIZE = 142;
static_assert(sizeof(TEST_DATA) == TEST_DATA_SIZE, "size of TEST_DATA must match TEST_DATA_SIZE");
// use memcmp to check if the data in a is a prefix of the data in b
bool contains(const void* a, const void* b, const std::size_t size) { return memcmp(a, b, size) == 0; }
/**
* Mocked Botan::TLS::Channel. Pretends to perform TLS operations and triggers appropriate callbacks in StreamCore.
*/
class MockChannel
{
public:
MockChannel(Botan::TLS::StreamCore& core)
: m_callbacks(core)
, m_bytes_till_complete_record(TEST_DATA_SIZE)
, m_active(false)
{
}
public:
std::size_t received_data(const uint8_t[], std::size_t buf_size)
{
if(m_bytes_till_complete_record <= buf_size)
{
m_callbacks.tls_record_received(0, TEST_DATA, TEST_DATA_SIZE);
m_active = true; // claim to be active once a full record has been received (for handshake test)
return 0;
}
m_bytes_till_complete_record -= buf_size;
return m_bytes_till_complete_record;
}
void send(const uint8_t buf[], std::size_t buf_size) { m_callbacks.tls_emit_data(buf, buf_size); }
bool is_active() { return m_active; }
protected:
Botan::TLS::StreamCore& m_callbacks;
std::size_t m_bytes_till_complete_record; // number of bytes still to read before tls record is completed
bool m_active;
};
}
namespace Botan {
namespace TLS {
/**
* A specification of StreamBase for the MockChannel used in this test. It
* matches the specifications for StreamBase<Botan::TLS::Client> and
* StreamBase<Botan::TLS::Server> except for the underlying channel type and the
* simplified constructor.
*/
template <>
class StreamBase<Botan_Tests::MockChannel>
{
public:
StreamBase()
: m_channel(m_core)
{
}
StreamBase(const StreamBase&) = delete;
StreamBase& operator=(const StreamBase&) = delete;
using handshake_type = Botan::TLS::handshake_type;
protected:
StreamCore m_core;
Botan::AutoSeeded_RNG m_rng;
Botan_Tests::MockChannel m_channel;
void validate_handshake_type(handshake_type) {}
bool validate_handshake_type(handshake_type, boost::system::error_code&) { return true; }
};
} // namespace TLS
} // namespace Botan
namespace Botan_Tests {
/**
Synchronous tests for Botan::Stream.
This test validates the asynchronous behavior Botan::Stream, including its utility classes StreamCore and Async_*_Op.
The stream's channel, i.e. TLS_Client or TLS_Server, is mocked and pretends to perform TLS operations (noop) and
provides the test data to the stream.
The underlying network socket, claiming it read / wrote a number of bytes.
*/
class Asio_Stream_Tests final : public Test
{
using TestStream = boost::beast::test::stream;
using FailCount = boost::beast::test::fail_count;
using AsioStream = Botan::TLS::Stream<TestStream&, MockChannel>;
boost::string_view test_data() const { return boost::string_view((const char*)TEST_DATA, TEST_DATA_SIZE); }
void test_sync_handshake(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()};
AsioStream ssl{socket};
ssl.handshake(AsioStream::handshake_type::client);
Test::Result result("sync TLS handshake");
result.test_eq("feeds data into channel until active", ssl.native_handle()->is_active(), true);
results.push_back(result);
}
void test_sync_handshake_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
// mimic handshake initialization
ssl.native_handle()->send(TEST_DATA, TEST_DATA_SIZE);
error_code ec;
ssl.handshake(AsioStream::handshake_type::client, ec);
Test::Result result("sync TLS handshake error");
result.test_eq("does not activate channel", ssl.native_handle()->is_active(), false);
result.confirm("propagates error code", (bool)ec);
results.push_back(result);
}
void test_async_handshake(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
// mimic handshake initialization
ssl.native_handle()->send(TEST_DATA, TEST_DATA_SIZE);
Test::Result result("async TLS handshake");
auto handler = [&](const error_code&)
{
result.confirm("reads from socket", socket.nread() > 0);
result.confirm("writes from socket", socket.nwrite() > 0);
result.test_eq("feeds data into channel until active", ssl.native_handle()->is_active(), true);
};
ssl.async_handshake(AsioStream::handshake_type::client, handler);
socket.close_remote();
ioc.run();
results.push_back(result);
}
void test_async_handshake_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
// mimic handshake initialization
ssl.native_handle()->send(TEST_DATA, TEST_DATA_SIZE);
Test::Result result("async TLS handshake error");
auto handler = [&](const error_code &ec)
{
result.test_eq("does not activate channel", ssl.native_handle()->is_active(), false);
result.confirm("propagates error code", (bool)ec);
};
ssl.async_handshake(AsioStream::handshake_type::client, handler);
ioc.run();
results.push_back(result);
}
void test_sync_read_some_success(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()};
AsioStream ssl{socket};
const std::size_t buf_size = 128;
uint8_t buf[buf_size];
error_code ec;
auto bytes_transferred = net::read(ssl, net::mutable_buffer(buf, sizeof(buf)), ec);
Test::Result result("sync read_some success");
result.confirm("reads the correct data", contains(buf, TEST_DATA, buf_size));
result.test_eq("reads the correct amount of data", bytes_transferred, buf_size);
result.confirm("does not report an error", !ec);
results.push_back(result);
}
void test_sync_read_some_buffer_sequence(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()};
AsioStream ssl{socket};
error_code ec;
std::vector<net::mutable_buffer> data;
uint8_t buf1[TEST_DATA_SIZE/2];
uint8_t buf2[TEST_DATA_SIZE/2];
data.emplace_back(net::mutable_buffer(buf1, TEST_DATA_SIZE/2));
data.emplace_back(net::mutable_buffer(buf2, TEST_DATA_SIZE/2));
auto bytes_transferred = net::read(ssl, data, ec);
Test::Result result("sync read_some buffer sequence");
result.confirm("reads the correct data",
contains(buf1, TEST_DATA, TEST_DATA_SIZE/2) &&
contains(buf2, TEST_DATA+TEST_DATA_SIZE/2, TEST_DATA_SIZE/2));
result.test_eq("reads the correct amount of data", bytes_transferred, TEST_DATA_SIZE);
result.confirm("does not report an error", !ec);
results.push_back(result);
}
void test_sync_read_some_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
uint8_t buf[128];
error_code ec;
auto bytes_transferred = net::read(ssl, net::mutable_buffer(buf, sizeof(buf)), ec);
Test::Result result("sync read_some error");
result.test_eq("didn't transfer anything", bytes_transferred, 0);
result.confirm("propagates error code", (bool)ec);
results.push_back(result);
}
void test_async_read_some_success(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()};
AsioStream ssl{socket};
uint8_t data[TEST_DATA_SIZE];
error_code ec;
Test::Result result("async read_some success");
auto read_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.confirm("reads the correct data", contains(data, TEST_DATA, TEST_DATA_SIZE));
result.test_eq("reads the correct amount of data", bytes_transferred, TEST_DATA_SIZE);
result.confirm("does not report an error", !ec);
};
net::mutable_buffer buf {data, TEST_DATA_SIZE};
net::async_read(ssl, buf, read_handler);
socket.close_remote();
ioc.run();
results.push_back(result);
}
void test_async_read_some_buffer_sequence(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc, test_data()};
AsioStream ssl{socket};
error_code ec;
std::vector<net::mutable_buffer> data;
uint8_t buf1[TEST_DATA_SIZE/2];
uint8_t buf2[TEST_DATA_SIZE/2];
data.emplace_back(net::mutable_buffer(buf1, TEST_DATA_SIZE/2));
data.emplace_back(net::mutable_buffer(buf2, TEST_DATA_SIZE/2));
Test::Result result("async read_some buffer sequence");
auto read_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.confirm("reads the correct data",
contains(buf1, TEST_DATA, TEST_DATA_SIZE/2) &&
contains(buf2, TEST_DATA+TEST_DATA_SIZE/2, TEST_DATA_SIZE/2));
result.test_eq("reads the correct amount of data", bytes_transferred, TEST_DATA_SIZE);
result.confirm("does not report an error", !ec);
};
net::async_read(ssl, data, read_handler);
socket.close_remote();
ioc.run();
results.push_back(result);
}
void test_async_read_some_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc};
AsioStream ssl{socket};
uint8_t data[TEST_DATA_SIZE];
error_code ec;
Test::Result result("async read_some error");
auto read_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.test_eq("didn't transfer anything", bytes_transferred, 0);
result.confirm("propagates error code", (bool)ec);
};
net::mutable_buffer buf {data, TEST_DATA_SIZE};
net::async_read(ssl, buf, read_handler);
socket.close_remote();
ioc.run();
results.push_back(result);
}
void test_sync_write_some_success(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
auto bytes_transferred = net::write(ssl, net::const_buffer(TEST_DATA, TEST_DATA_SIZE), ec);
Test::Result result("sync write_some success");
result.confirm("writes the correct data", remote.str() == test_data());
result.test_eq("writes the correct amount of data", bytes_transferred, TEST_DATA_SIZE);
result.confirm("does not report an error", !ec);
results.push_back(result);
}
void test_sync_write_some_buffer_sequence(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
// this should be Botan::TLS::MAX_PLAINTEXT_SIZE + 1024 + 1
std::array<uint8_t, 17 * 1024 + 1> random_data;
random_data.fill('4'); // chosen by fair dice roll
random_data.back() = '5';
std::vector<net::const_buffer> data;
data.emplace_back(net::const_buffer(random_data.data(), 1));
for(std::size_t i = 1; i < random_data.size(); i += 1024)
{
data.emplace_back(net::const_buffer(random_data.data() + i, 1024));
}
auto bytes_transferred = net::write(ssl, data, ec);
Test::Result result("sync write_some buffer sequence");
result.confirm("[precondition] MAX_PLAINTEXT_SIZE is still smaller than random_data.size()",
Botan::TLS::MAX_PLAINTEXT_SIZE < random_data.size());
result.confirm("writes the correct data",
contains(remote.buffer().data().data(), random_data.data(), random_data.size()));
result.test_eq("writes the correct amount of data", bytes_transferred, random_data.size());
result.test_eq("correct number of writes", socket.nwrite(), 2);
result.confirm("does not report an error", !ec);
results.push_back(result);
}
void test_sync_write_some_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
auto bytes_transferred = net::write(ssl, net::const_buffer(TEST_DATA, TEST_DATA_SIZE), ec);
Test::Result result("sync write_some error");
result.test_eq("didn't transfer anything", bytes_transferred, 0);
result.confirm("propagates error code", (bool)ec);
results.push_back(result);
}
void test_async_write_some_success(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
Test::Result result("async write_some success");
auto write_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.confirm("writes the correct data", remote.str() == test_data());
result.test_eq("writes the correct amount of data", bytes_transferred, TEST_DATA_SIZE);
result.confirm("does not report an error", !ec);
};
net::async_write(ssl, net::const_buffer(TEST_DATA, TEST_DATA_SIZE), write_handler);
ioc.run();
results.push_back(result);
}
void test_async_write_some_buffer_sequence(std::vector<Test::Result>& results)
{
net::io_context ioc;
TestStream socket{ioc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
// this should be Botan::TLS::MAX_PLAINTEXT_SIZE + 1024 + 1
std::array<uint8_t, 17 * 1024 + 1> random_data;
random_data.fill('4'); // chosen by fair dice roll
random_data.back() = '5';
std::vector<net::const_buffer> src;
src.emplace_back(net::const_buffer(random_data.data(), 1));
for(std::size_t i = 1; i < random_data.size(); i += 1024)
{
src.emplace_back(net::const_buffer(random_data.data() + i, 1024));
}
Test::Result result("async write_some buffer sequence");
result.confirm("[precondition] MAX_PLAINTEXT_SIZE is still smaller than random_data.size()",
Botan::TLS::MAX_PLAINTEXT_SIZE < random_data.size());
auto write_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.confirm("writes the correct data",
contains(remote.buffer().data().data(), random_data.data(), random_data.size()));
result.test_eq("writes the correct amount of data", bytes_transferred, random_data.size());
result.test_eq("correct number of writes", socket.nwrite(), 2);
result.confirm("does not report an error", !ec);
};
net::async_write(ssl, src, write_handler);
ioc.run();
results.push_back(result);
}
void test_async_write_some_error(std::vector<Test::Result>& results)
{
net::io_context ioc;
// fail right away
FailCount fc{0, net::error::eof};
TestStream socket{ioc, fc}, remote{ioc};
socket.connect(remote);
AsioStream ssl{socket};
error_code ec;
Test::Result result("async write_some error");
auto write_handler = [&](const error_code &ec, std::size_t bytes_transferred)
{
result.test_eq("didn't transfer anything", bytes_transferred, 0);
result.confirm("propagates error code", (bool)ec);
};
net::async_write(ssl, net::const_buffer(TEST_DATA, TEST_DATA_SIZE), write_handler);
ioc.run();
results.push_back(result);
}
public:
std::vector<Test::Result> run() override
{
std::vector<Test::Result> results;
test_sync_handshake(results);
test_sync_handshake_error(results);
test_async_handshake(results);
test_async_handshake_error(results);
test_sync_read_some_success(results);
test_sync_read_some_buffer_sequence(results);
test_sync_read_some_error(results);
test_async_read_some_success(results);
test_async_read_some_buffer_sequence(results);
test_async_read_some_error(results);
test_sync_write_some_success(results);
test_sync_write_some_buffer_sequence(results);
test_sync_write_some_error(results);
test_async_write_some_success(results);
test_async_write_some_buffer_sequence(results);
test_async_write_some_error(results);
return results;
}
};
BOTAN_REGISTER_TEST("asio_stream", Asio_Stream_Tests);
} // namespace Botan_Tests
#endif
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