Systemsicherheit/Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Networking/Client.cpp

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#include "Client.h"
#include "LogBase.h"
#include "Network_def.h"
#include "Messages.pb.h"
#include <boost/lexical_cast.hpp>
using namespace util;
Client::Client(boost::asio::io_service& io_service,
boost::asio::ssl::context& context,
boost::asio::ip::tcp::resolver::iterator endpoint_iterator) : AbstractNetworkOps(io_service, context) {
socket_.set_verify_mode(boost::asio::ssl::verify_peer);
socket_.set_verify_callback(boost::bind(&Client::verify_certificate, this, _1, _2));
this->endpoint_iterator = endpoint_iterator;
}
Client::~Client() {}
void Client::startConnection() {
Log("Start connecting...");
boost::system::error_code ec;
boost::asio::connect(socket_.lowest_layer(), this->endpoint_iterator, ec);
handle_connect(ec);
}
bool Client::verify_certificate(bool preverified, boost::asio::ssl::verify_context& ctx) {
char subject_name[256];
X509* cert = X509_STORE_CTX_get_current_cert(ctx.native_handle());
X509_NAME_oneline(X509_get_subject_name(cert), subject_name, 256);
Log("Verifying certificate: %s", subject_name);
return preverified;
}
void Client::handle_connect(const boost::system::error_code &error) {
if (!error) {
Log("Connection established");
boost::system::error_code ec;
socket_.handshake(boost::asio::ssl::stream_base::client, ec);
handle_handshake(ec);
} else {
Log("Connect failed: %s", error.message(), log::error);
}
}
void Client::handle_handshake(const boost::system::error_code& error) {
if (!error) {
Log("Handshake successful");
auto ret = this->callback_handler("", -1);
send(ret);
} else {
Log("Handshake failed: %s", error.message(), log::error);
}
}