Initial import.

connection.cpp

@@ -0,0 +1,131 @@
+#include <iostream>
+#include <assert.h>
+#include <malloc.h>
+#include "nethogs.h"
+#include "connection.h"
+
+class ConnList
+{
+public:
+	ConnList (Connection * m_val = NULL, ConnList * m_next = NULL)
+	{
+	    val = m_val; next = m_next;
+	}
+	Connection * val;
+	ConnList * next;
+};
+
+ConnList * connections = NULL;
+
+void PackList::add (Packet * p)
+{
+	if (content == NULL)
+	{
+		content = new PackListNode (p);
+		return;
+	}
+
+	if (content->val->time.tv_sec == p->time.tv_sec)
+	{
+		content->val->len += p->len;
+		return;
+	}
+
+	content = new PackListNode(p, content);
+}
+
+/* sums up the total bytes used and removes 'old' packets */
+bpf_u_int32 PackList::sumanddel (timeval t)
+{
+	bpf_u_int32 retval = 0;
+	PackListNode * current = content;
+	PackListNode * previous = NULL;
+
+	while (current != NULL) 
+	{
+		if (current->val->isOlderThan(t))
+		{
+			if (current == content)
+				content = NULL;
+			else if (previous != NULL)
+				previous->next = NULL;
+			delete current;
+			return retval;
+		}
+		retval += current->val->len;
+		previous = current;
+		current = current->next;
+	}
+	return retval;
+}
+
+Connection::Connection (Packet * packet)
+{
+	if (DEBUG)
+		assert (packet != NULL);
+	connections = new ConnList (this, connections);
+	sent_packets = new PackList ();
+	recv_packets = new PackList ();
+	if (packet->Outgoing())
+	{
+		sent_packets->add(packet);
+	} else {
+		recv_packets->add(packet);
+	}
+	refpacket = packet->newPacket ();
+	lastpacket = packet->time.tv_sec;
+	if (DEBUG)
+		std::cout << "New reference packet created at " << refpacket << std::endl;
+}
+
+Connection::~Connection ()
+{
+	if (DEBUG)
+		std::cout << "Deleting connection" << std::endl;
+	delete refpacket;
+    	if (sent_packets != NULL)
+		delete sent_packets;
+    	if (recv_packets != NULL)
+		delete recv_packets;
+}
+
+void Connection::add (Packet * packet)
+{
+	lastpacket = packet->time.tv_sec;
+	if (packet->Outgoing())
+	{
+		sent_packets->add (packet);
+	} else {
+		recv_packets->add (packet);
+	}
+}
+
+Connection * findConnection (Packet * packet)
+{
+	ConnList * current = connections;
+	while (current != NULL)
+	{
+		if (packet->match(current->val->refpacket))
+			return current->val;
+
+		current = current->next;
+	}
+	return NULL;
+}
+
+/*
+ * Connection::sumanddel
+ *	
+ * sums up the total bytes used
+ * and removes 'old' packets. 
+ *
+ * Returns sum of sent packages (by address)
+ *	   sum of recieved packages (by address)
+ */
+void Connection::sumanddel (timeval t, bpf_u_int32 * sent, bpf_u_int32 * recv)
+{
+    (*sent)=(*recv)=0;
+
+    *sent = sent_packets->sumanddel(t);
+    *recv = recv_packets->sumanddel(t);
+}