-Add new kind of Filter: HookingFilter

git-svn-id: file:///Users/braun/svn/vermont/trunk/vermont@71 aef3b71b-58ee-0310-9ba9-8811b9f0742f

sampler/HookingFilter.cpp

@@ -0,0 +1,20 @@
+#include "HookingFilter.h"
+#include "packet_hook.h"
+
+bool HookingFilter::processPacket(const Packet *p)
+{
+	struct packet_hook ph;
+
+        /* marshall data into C struct - just pointers */
+	ph.data=p->data;
+	ph.ip_header=p->ipHeader;
+	ph.transport_header=p->transportHeader;
+
+	ph.timestamp=&(p->timestamp);
+	ph.length=p->length;
+
+        /* call hooking function */
+	hook((void *)&ph);
+
+	return true;
+}

sampler/HookingFilter.h

@@ -0,0 +1,40 @@
+/*
+ Hooking Filter
+ (c) by Ronny T. Lampert
+
+ This filter calls a given function pointer for every packet it receives.
+ Because we assume standard C code that doesn't know about class Packet
+ we have to marshall the relevant pointers into a struct first.
+
+ */
+
+#ifndef HOOKING_FILTER_H
+#define HOOKING_FILTER_H
+
+#include "Globals.h"
+#include "PacketProcessor.h"
+
+class HookingFilter : public PacketProcessor {
+
+public:
+
+	HookingFilter(void (*f)(void *)) {
+                hook=f;
+	}
+
+	~HookingFilter() {
+
+	}
+
+	virtual bool processPacket(const Packet *p);
+
+protected:
+
+	void (*hook)(void *);
+
+};
+
+
+
+
+#endif