From 4b0778537ea5f1c4d7592639208e7c235abab260 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Thu, 12 Jun 2008 19:17:28 +0200
Subject: Recieve-Funktion hinzugef?gt (ungetestet)

---
 src/Net/ClientConnection.cpp | 26 ++++++++---------
 src/Net/Connection.cpp       | 69 ++++++++++++++++++++++++++++++++++++++++----
 src/Net/Connection.h         | 11 ++++++-
 src/Net/Packet.h             |  2 +-
 src/madc.cpp                 |  2 +-
 5 files changed, 87 insertions(+), 23 deletions(-)

diff --git a/src/Net/ClientConnection.cpp b/src/Net/ClientConnection.cpp
index 66df2ea..ea2e10e 100644
--- a/src/Net/ClientConnection.cpp
+++ b/src/Net/ClientConnection.cpp
@@ -32,8 +32,6 @@ void ClientConnection::connect(const IPAddress &address) throw(ConnectionExcepti
   if(connected)
     disconnect();
   
-  peer = new IPAddress(address);
-  
   sock = socket(PF_INET, SOCK_STREAM, 0);
   if(sock < 0)
     throw ConnectionException("socket()", std::strerror(errno));
@@ -41,6 +39,10 @@ void ClientConnection::connect(const IPAddress &address) throw(ConnectionExcepti
   if(::connect(sock, peer->getSockAddr(), peer->getSockAddrLength()) < 0)
     throw ConnectionException("connect()", std::strerror(errno));
   
+  peer = new IPAddress(address);
+  
+  connected = true;
+  
   gnutls_anon_allocate_client_credentials(&anoncred);
   gnutls_init(&session, GNUTLS_CLIENT);
   
@@ -52,10 +54,11 @@ void ClientConnection::connect(const IPAddress &address) throw(ConnectionExcepti
   gnutls_transport_set_ptr(session, reinterpret_cast<gnutls_transport_ptr_t>(sock));
   
   int ret = gnutls_handshake(session);
-  if(ret < 0)
+  if(ret < 0) {
+    disconnect();
+    
     throw ConnectionException("gnutls_handshake()", gnutls_strerror(ret));
-  
-  connected = true;
+  }
 }
 
 void ClientConnection::disconnect() {
@@ -64,19 +67,14 @@ void ClientConnection::disconnect() {
   
   gnutls_bye(session, GNUTLS_SHUT_RDWR);
   
-  if(sock >= 0) {
-    shutdown(sock, SHUT_RDWR);
-    close(sock);
-    sock = -1;
-  }
+  shutdown(sock, SHUT_RDWR);
+  close(sock);
+  sock = -1;
   
   gnutls_deinit(session);
   gnutls_anon_free_client_credentials(anoncred);
   
-  if(peer) {
-    delete peer;
-    peer = 0;
-  }
+  delete peer;
   
   connected = false;
 }
diff --git a/src/Net/Connection.cpp b/src/Net/Connection.cpp
index 34b6ed6..bc38ed2 100644
--- a/src/Net/Connection.cpp
+++ b/src/Net/Connection.cpp
@@ -36,17 +36,74 @@ bool Connection::send(const Packet &packet) {
     if(ret < 0) {
       if(ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN)
         continue;
-      else
-        return false;
-    }
-    else {
-      data += ret;
-      dataLength -= ret;
+      
+      return false;
     }
+    
+    data += ret;
+    dataLength -= ret;
   }
   
   return true;
 }
 
+bool Connection::recieve() {
+  unsigned char *headerData = reinterpret_cast<unsigned char*>(&header);
+  ssize_t ret;
+  
+  if(!isConnected())
+    return false;
+  
+  while(true) {
+    if(!gnutls_record_check_pending(getSession()))
+      return false;
+    
+    if(read < sizeof(Packet::Data)) {
+      ret = gnutls_record_recv(getSession(), headerData+read, sizeof(Packet::Data)-read);
+      
+      if(ret < 0) {
+        if(ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN)
+          continue;
+        
+        return false;
+      }
+      
+      read += ret;
+      
+      if(read < sizeof(Packet::Data))
+        continue;
+      
+      if(!header.length) {
+        Packet packet(header.type, header.requestId);
+        
+        return true;
+      }
+      
+      data = new unsigned char[header.length];
+    }
+    
+    ret = gnutls_record_recv(getSession(), data+read-sizeof(Packet::Data), header.length+sizeof(Packet::Data)-read);
+    
+    if(ret < 0) {
+      if(ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN)
+        continue;
+      
+      return false;
+    }
+    
+    read += ret;
+    
+    if(read < header.length+sizeof(Packet::Data))
+      continue;
+    
+    Packet packet(header.type, header.requestId, data, header.length);
+    
+    delete [] data;
+    data = 0;
+    
+    return true;
+  }
+}
+
 }
 }
diff --git a/src/Net/Connection.h b/src/Net/Connection.h
index 6e8d8de..1879f9e 100644
--- a/src/Net/Connection.h
+++ b/src/Net/Connection.h
@@ -21,6 +21,7 @@
 #define MAD_NET_CONNECTION_H_
 
 #include <gnutls/gnutls.h>
+#include "Packet.h"
 
 namespace Mad {
 namespace Net {
@@ -29,16 +30,24 @@ class IPAddress;
 class Packet;
 
 class Connection {
+  private:
+    Packet::Data header;
+    unsigned char *data;
+    
+    unsigned long read;
+    
   protected:
     virtual gnutls_session_t& getSession() = 0;
     
   public:
-    virtual ~Connection() {}
+    Connection() : data(0), read(0) {}
+    virtual ~Connection() {if(data) delete [] data;}
     
     virtual bool isConnected() const = 0;
     virtual const IPAddress* getPeer() const = 0;
     
     bool send(const Packet &packet);
+    bool recieve();
     
     static void init() {
       gnutls_global_init();
diff --git a/src/Net/Packet.h b/src/Net/Packet.h
index 28dcb86..32aba18 100644
--- a/src/Net/Packet.h
+++ b/src/Net/Packet.h
@@ -39,7 +39,7 @@ class Packet {
     Data *rawData;
     
   public:
-    Packet(unsigned short type, unsigned short requestId, void *data = NULL, unsigned long length = 0) {
+    Packet(unsigned short type, unsigned short requestId, const void *data = NULL, unsigned long length = 0) {
       rawData = (Data*)std::malloc(sizeof(Data)+length);
       
       rawData->type = type;
diff --git a/src/madc.cpp b/src/madc.cpp
index 63516d9..731186e 100644
--- a/src/madc.cpp
+++ b/src/madc.cpp
@@ -34,7 +34,7 @@ int main() {
     std::cerr << "Connection error: " << e.what() << std::endl;
   }
   
-  connection.send(Mad::Net::Packet(0x0001, 0xABCD));
+  std::cout << connection.send(Mad::Net::Packet(0x0001, 0xABCD)) << std::endl;
   
   connection.disconnect();
   
-- 
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