From 25db9ff8a4cfb4b98aeeaae360e8c718b9c5e20c Mon Sep 17 00:00:00 2001
From: Dennis Brentjes <d.brentjes@gmail.com>
Date: Thu, 27 Oct 2016 09:25:53 +0200
Subject: Adds libgcrypt implementation for elgamal in multiplicative group.

Also adapts the API to both handle sodium and gcrypt libraries.
---
 client/cmixclient.cpp | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

(limited to 'client/cmixclient.cpp')

diff --git a/client/cmixclient.cpp b/client/cmixclient.cpp
index 6866274..9ee1d81 100644
--- a/client/cmixclient.cpp
+++ b/client/cmixclient.cpp
@@ -1,14 +1,23 @@
 
 #include "cmixclient.hpp"
 
+#include <iostream>
+
 using namespace boost::asio::ip;
 using namespace boost::asio;
 
 void CMixClient::key_exchange(int i) {
 	BOOST_LOG_TRIVIAL(trace) << "Sending KeyExchange for node: " << i;
 		
+	char* buffer;
+	size_t len;
+	
+	api.get_key_array(&buffer, &len, keypair.pub);
+	
 	cmix_proto::KeyExchange ke;
-	ke.set_public_key(keypair.pub, keypair.pub_len);
+	ke.set_public_key(buffer, len);
+	
+	free(buffer);
 		
 	network_connections.at(i).async_send(ke);
 	network_connections.at(i).async_receive([i, this](cmix_proto::CMixMessage message) {
@@ -27,8 +36,9 @@ void CMixClient::initialize_connections() {
 			imaclient.set_id("A");
 			BOOST_LOG_TRIVIAL(trace) << "sending imaclient to node: " << i;
 			network_connections.at(i).async_send(imaclient);
-		
-			key_exchange(i);
+			network_connections.at(i).async_receive([i, this](cmix_proto::CMixMessage message) {
+				handle_message(i, message);
+			});
 		};
 	
 		network_connections.emplace_back(std::unique_ptr<ssl::stream<tcp::socket>>(new ssl::stream<tcp::socket>(io_service, *ctx)));
@@ -48,12 +58,12 @@ void CMixClient::handle_message(int node_id, cmix_proto::CMixMessage message)
 {
 	switch(message.contents_case()) {
 		case cmix_proto::CMixMessage::ContentsCase::kKeyexchange: {
-			BOOST_LOG_TRIVIAL(trace) << "handling keyexchange";
+			BOOST_LOG_TRIVIAL(trace) << "handling keyexchange for node: " << node_id;
 			handle_key_exchange(node_id, *message.mutable_keyexchange());
 			return;
 		}
 		case cmix_proto::CMixMessage::ContentsCase::kBye: {
-			BOOST_LOG_TRIVIAL(trace) << "handling bye";
+			BOOST_LOG_TRIVIAL(trace) << "handling bye for node: " << node_id;
 			network_connections.at(node_id).close();
 			if(std::all_of(network_connections.begin(), network_connections.end(), [](SSLSenderReceiver const& c) { return !c.is_open(); })) {
 				break;
@@ -61,6 +71,11 @@ void CMixClient::handle_message(int node_id, cmix_proto::CMixMessage message)
 				return;
 			}
  		}
+ 		case cmix_proto::CMixMessage::ContentsCase::kNodeready: {
+			BOOST_LOG_TRIVIAL(trace) << "handling NodeReady: " << node_id;
+			key_exchange(node_id);
+			return;
+ 		}
 		default: {
 			BOOST_LOG_TRIVIAL(error) << "Received unknown message";
 		}
@@ -86,7 +101,11 @@ CMixClient::CMixClient(NetworkDetails details)
 
 CMixClient::~CMixClient()
 {
-	api.free_key_pair(keypair);
+	api.free_key_pair(&keypair);
+	for(auto&& d : data) {
+		api.free_shared_key(&d.shared_value);
+	}
+	
 }
 
 void CMixClient::run() {
-- 
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