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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/testkit/time_bomb.h>
#include <vespa/vespalib/net/crypto_engine.h>
#include <vespa/vespalib/net/tls/tls_crypto_engine.h>
#include <vespa/vespalib/net/tls/maybe_tls_crypto_engine.h>
#include <vespa/vespalib/net/crypto_socket.h>
#include <vespa/vespalib/net/selector.h>
#include <vespa/vespalib/net/server_socket.h>
#include <vespa/vespalib/net/socket_handle.h>
#include <vespa/vespalib/net/socket_spec.h>
#include <vespa/vespalib/net/socket_utils.h>
#include <vespa/vespalib/data/smart_buffer.h>
#include <vespa/vespalib/test/make_tls_options_for_testing.h>
#include <vespa/vespalib/util/size_literals.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
using namespace vespalib;
using namespace vespalib::test;
struct SocketPair {
SocketHandle client;
SocketHandle server;
SocketPair() : client(), server() {
int sockets[2];
socketutils::nonblocking_socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
client.reset(sockets[0]);
server.reset(sockets[1]);
}
};
//-----------------------------------------------------------------------------
bool is_blocked(int res) {
return ((res == -1) && ((errno == EWOULDBLOCK) || (errno == EAGAIN)));
}
void read(CryptoSocket &socket, SmartBuffer &buffer) {
size_t chunk_size = std::max(size_t(4_Ki), socket.min_read_buffer_size());
auto chunk = buffer.reserve(chunk_size);
int res = socket.read(chunk.data, chunk.size);
if (res > 0) {
buffer.commit(res);
} else {
ASSERT_TRUE(is_blocked(res));
}
}
void drain(CryptoSocket &socket, SmartBuffer &buffer) {
int res;
size_t chunk_size = std::max(size_t(4_Ki), socket.min_read_buffer_size());
do {
auto chunk = buffer.reserve(chunk_size);
res = socket.drain(chunk.data, chunk.size);
if (res > 0) {
buffer.commit(res);
}
} while (res > 0);
ASSERT_EQUAL(res, 0);
}
void write(CryptoSocket &socket, SmartBuffer &buffer) {
auto chunk = buffer.obtain();
auto res = socket.write(chunk.data, chunk.size);
if (res > 0) {
buffer.evict(res);
} else {
ASSERT_TRUE(is_blocked(res));
}
}
void flush(CryptoSocket &socket) {
int res = 1;
while (res > 0) {
res = socket.flush();
}
ASSERT_TRUE((res == 0) || is_blocked(res));
}
void half_close(CryptoSocket &socket) {
auto res = socket.half_close();
ASSERT_TRUE((res == 0) || is_blocked(res));
}
//-----------------------------------------------------------------------------
vespalib::string read_bytes(CryptoSocket &socket, SmartBuffer &read_buffer, size_t wanted_bytes) {
SingleFdSelector selector(socket.get_fd());
while (read_buffer.obtain().size < wanted_bytes) {
ASSERT_TRUE(selector.wait_readable());
read(socket, read_buffer);
drain(socket, read_buffer);
}
auto data = read_buffer.obtain();
vespalib::string message(data.data, wanted_bytes);
read_buffer.evict(message.size());
return message;
}
//-----------------------------------------------------------------------------
void read_EOF(CryptoSocket &socket, SmartBuffer &read_buffer) {
ASSERT_EQUAL(read_buffer.obtain().size, 0u);
SingleFdSelector selector(socket.get_fd());
ASSERT_TRUE(selector.wait_readable());
size_t chunk_size = std::max(size_t(4_Ki), socket.min_read_buffer_size());
auto chunk = read_buffer.reserve(chunk_size);
auto res = socket.read(chunk.data, chunk.size);
while (is_blocked(res)) {
ASSERT_TRUE(selector.wait_readable());
res = socket.read(chunk.data, chunk.size);
}
ASSERT_EQUAL(res, 0);
}
//-----------------------------------------------------------------------------
void write_bytes(CryptoSocket &socket, const vespalib::string &message) {
SmartBuffer write_buffer(message.size());
SingleFdSelector selector(socket.get_fd());
auto data = write_buffer.reserve(message.size());
memcpy(data.data, message.data(), message.size());
write_buffer.commit(message.size());
while (write_buffer.obtain().size > 0) {
ASSERT_TRUE(selector.wait_writable());
write(socket, write_buffer);
flush(socket);
}
}
//-----------------------------------------------------------------------------
void write_EOF(CryptoSocket &socket) {
SingleFdSelector selector(socket.get_fd());
ASSERT_TRUE(selector.wait_writable());
auto res = socket.half_close();
while (is_blocked(res)) {
ASSERT_TRUE(selector.wait_writable());
res = socket.half_close();
}
ASSERT_EQUAL(res, 0);
}
//-----------------------------------------------------------------------------
void verify_graceful_shutdown(CryptoSocket &socket, SmartBuffer &read_buffer, bool is_server) {
if(is_server) {
TEST_DO(write_EOF(socket));
TEST_DO(read_EOF(socket, read_buffer));
TEST_DO(read_EOF(socket, read_buffer));
TEST_DO(read_EOF(socket, read_buffer));
} else {
TEST_DO(read_EOF(socket, read_buffer));
TEST_DO(read_EOF(socket, read_buffer));
TEST_DO(read_EOF(socket, read_buffer));
TEST_DO(write_EOF(socket));
}
}
//-----------------------------------------------------------------------------
void verify_socket_io(CryptoSocket &socket, SmartBuffer &read_buffer, bool is_server) {
vespalib::string client_message = "please pick up, I need to talk to you";
vespalib::string server_message = "hello, this is the server speaking";
if(is_server) {
vespalib::string read = read_bytes(socket, read_buffer, client_message.size());
write_bytes(socket, server_message);
EXPECT_EQUAL(client_message, read);
} else {
write_bytes(socket, client_message);
vespalib::string read = read_bytes(socket, read_buffer, server_message.size());
EXPECT_EQUAL(server_message, read);
}
}
//-----------------------------------------------------------------------------
void verify_handshake(CryptoSocket &socket) {
bool done = false;
SingleFdSelector selector(socket.get_fd());
while (!done) {
auto res = socket.handshake();
ASSERT_TRUE(res != CryptoSocket::HandshakeResult::FAIL);
switch (res) {
case CryptoSocket::HandshakeResult::FAIL:
case CryptoSocket::HandshakeResult::DONE:
done = true;
break;
case CryptoSocket::HandshakeResult::NEED_READ:
ASSERT_TRUE(selector.wait_readable());
break;
case CryptoSocket::HandshakeResult::NEED_WRITE:
ASSERT_TRUE(selector.wait_writable());
break;
case CryptoSocket::HandshakeResult::NEED_WORK:
socket.do_handshake_work();
}
}
}
//-----------------------------------------------------------------------------
void verify_crypto_socket(SocketPair &sockets, CryptoEngine &engine, bool is_server) {
SocketHandle &my_handle = is_server ? sockets.server : sockets.client;
my_handle.set_blocking(false);
SmartBuffer read_buffer(4_Ki);
CryptoSocket::UP my_socket = is_server
? engine.create_server_crypto_socket(std::move(my_handle))
: engine.create_client_crypto_socket(std::move(my_handle), make_local_spec());
TEST_DO(verify_handshake(*my_socket));
drain(*my_socket, read_buffer);
TEST_DO(verify_socket_io(*my_socket, read_buffer, is_server));
TEST_DO(verify_graceful_shutdown(*my_socket, read_buffer, is_server));
}
//-----------------------------------------------------------------------------
TEST_MT_FFF("require that encrypted async socket io works with NullCryptoEngine",
2, SocketPair(), NullCryptoEngine(), TimeBomb(60))
{
TEST_DO(verify_crypto_socket(f1, f2, (thread_id == 0)));
}
TEST_MT_FFF("require that encrypted async socket io works with TlsCryptoEngine",
2, SocketPair(), TlsCryptoEngine(make_tls_options_for_testing()), TimeBomb(60))
{
TEST_DO(verify_crypto_socket(f1, f2, (thread_id == 0)));
}
TEST_MT_FFF("require that encrypted async socket io works with MaybeTlsCryptoEngine(true)",
2, SocketPair(), MaybeTlsCryptoEngine(std::make_shared<TlsCryptoEngine>(make_tls_options_for_testing()), true), TimeBomb(60))
{
TEST_DO(verify_crypto_socket(f1, f2, (thread_id == 0)));
}
TEST_MT_FFF("require that encrypted async socket io works with MaybeTlsCryptoEngine(false)",
2, SocketPair(), MaybeTlsCryptoEngine(std::make_shared<TlsCryptoEngine>(make_tls_options_for_testing()), false), TimeBomb(60))
{
TEST_DO(verify_crypto_socket(f1, f2, (thread_id == 0)));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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