From fb86311df4e1db902cbb6f527ad6c038543973a8 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Thu, 12 Jun 2008 22:51:52 +0200
Subject: Einige Verbesserungen

---
 src/Net/ServerConnection.cpp | 48 +++++++++-----------------------------------
 src/Net/ServerConnection.h   |  8 +++++---
 src/mad-core.cpp             | 12 ++++++-----
 src/madc.cpp                 |  5 +++--
 4 files changed, 24 insertions(+), 49 deletions(-)

(limited to 'src')

diff --git a/src/Net/ServerConnection.cpp b/src/Net/ServerConnection.cpp
index 4a0bf15..1e0959d 100644
--- a/src/Net/ServerConnection.cpp
+++ b/src/Net/ServerConnection.cpp
@@ -27,38 +27,7 @@
 namespace Mad {
 namespace Net {
 
-bool ServerConnection::loadDHParams(const std::string &file) {
-  std::ifstream stream(file.c_str());
-  
-  if(!stream.is_open())
-    return false;
-  
-  std::string data, line;
-  
-  while(!stream.eof()) {
-    std::getline(stream, line);
-    data += line + "\n";
-  }
-  
-  stream.close();
-  
-  gnutls_datum_t datum;
-  datum.data = new unsigned char[data.size()];
-  datum.size = data.size();
-  
-  std::memcpy(datum.data, data.data(), data.size());
-  
-  int ret = gnutls_dh_params_import_pkcs3(dh_params, &datum, GNUTLS_X509_FMT_PEM);
-  
-  if(ret == 0)
-    gnutls_anon_set_server_dh_params(anoncred, dh_params);
-  
-  delete [] datum.data;
-  
-  return (ret == 0);
-}
-
-bool ServerConnection::listen(const IPAddress &address) {
+void ServerConnection::listen(const IPAddress &address) throw(ConnectionException) {
   const int kx_list[] = {GNUTLS_KX_ANON_DH, 0};
   
   if(connected)
@@ -66,27 +35,30 @@ bool ServerConnection::listen(const IPAddress &address) {
   
   int listen_sock = socket(PF_INET, SOCK_STREAM, 0);
   if(listen_sock < 0)
-    return false;
+    throw ConnectionException("socket()", std::strerror(errno));
   
   peer = new IPAddress(address);
   
   if(bind(listen_sock, peer->getSockAddr(), peer->getSockAddrLength()) < 0) {
     close(listen_sock);
     delete peer;
-    return false;
+    
+    throw ConnectionException("bind()", std::strerror(errno));
   }
   
   if(::listen(listen_sock, 1024) < 0) {
     close(listen_sock);
     delete peer;
-    return false;
+    
+    throw ConnectionException("listen()", std::strerror(errno));
   }
   
   sock = accept(listen_sock, NULL, NULL);
   if(sock < 0) {
     close(listen_sock);
     delete peer;
-    return false;
+    
+    throw ConnectionException("accept()", std::strerror(errno));
   }
   
   close(listen_sock);
@@ -106,10 +78,8 @@ bool ServerConnection::listen(const IPAddress &address) {
   if(ret < 0) {
     disconnect();
     
-    return false;
+    throw ConnectionException("gnutls_handshake()", gnutls_strerror(ret));
   }
-  
-  return true;
 }
 
 void ServerConnection::disconnect() {
diff --git a/src/Net/ServerConnection.h b/src/Net/ServerConnection.h
index a1e839f..09f9d6b 100644
--- a/src/Net/ServerConnection.h
+++ b/src/Net/ServerConnection.h
@@ -21,6 +21,7 @@
 #define MAD_NET_SERVERCONNECTION_H_
 
 #include "Connection.h"
+#include "ConnectionException.h"
 #include <string>
 
 namespace Mad {
@@ -44,7 +45,10 @@ class ServerConnection : public Connection {
   public:
     ServerConnection() : connected(false) {
       gnutls_anon_allocate_server_credentials(&anoncred);
+      
       gnutls_dh_params_init(&dh_params);
+      gnutls_dh_params_generate2(dh_params, 768);
+      gnutls_anon_set_server_dh_params(anoncred, dh_params);
     }
     
     virtual ~ServerConnection() {
@@ -55,9 +59,7 @@ class ServerConnection : public Connection {
       gnutls_anon_free_server_credentials(anoncred);
     }
     
-    bool loadDHParams(const std::string &file);
-    
-    bool listen(const IPAddress &address);
+    void listen(const IPAddress &address) throw(ConnectionException);
     void disconnect();
     
     virtual bool dataPending();
diff --git a/src/mad-core.cpp b/src/mad-core.cpp
index 219621f..76e7b9a 100644
--- a/src/mad-core.cpp
+++ b/src/mad-core.cpp
@@ -35,11 +35,13 @@ int main() {
   
   connection.signalRecieve().connect(sigc::ptr_fun(recieveHandler));
   
-  connection.loadDHParams("dh.pem");
-  
-  connection.listen(Mad::Net::IPAddress("0.0.0.0", 6666));
-  
-  while(!connection.recieve());
+  try {  
+    connection.listen(Mad::Net::IPAddress("0.0.0.0", 6666));
+    while(!connection.recieve());
+  }
+  catch(Mad::Net::Exception &e) {
+    std::cerr << "Connection error: " << e.what() << std::endl;
+  }
   
   connection.disconnect();
   
diff --git a/src/madc.cpp b/src/madc.cpp
index a4fc2bf..9d525b2 100644
--- a/src/madc.cpp
+++ b/src/madc.cpp
@@ -29,13 +29,14 @@ int main() {
   
   try {
     connection.connect(Mad::Net::IPAddress("127.0.0.1", 6666));
-    std::cout << connection.send(Mad::Net::Packet(0x0001, 0xABCD)) << std::endl;
-    connection.disconnect();
+    connection.send(Mad::Net::Packet(0x0001, 0xABCD));
   }
   catch(Mad::Net::Exception &e) {
     std::cerr << "Connection error: " << e.what() << std::endl;
   }
   
+  connection.disconnect();
+  
   Mad::Net::Connection::deinit();
   
   return 0;
-- 
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