added network server files

[palacios.git] / misc / network_servers / vtl / net_util.h

diff --git a/misc/network_servers/vtl/net_util.h b/misc/network_servers/vtl/net_util.h
new file mode 100644 (file)
index 0000000..6883c0d
--- /dev/null
+++ b/misc/network_servers/vtl/net_util.h
@@ -0,0 +1,51 @@
+#ifndef __NET_UTIL_H
+#define __NET_UTIL_H 1
+
+#ifdef linux
+#include <sys/socket.h>
+#include <sys/types.h> 
+#include <netinet/in.h>
+#elif WIN32
+
+#endif
+
+// 14 (ethernet frame) + 20 bytes
+struct HEADERS {
+  char ethernetdest[6];
+  char ethernetsrc[6];
+  unsigned char ethernettype[2]; // indicates layer 3 protocol type
+  char ip[20];
+};
+
+struct IPHEADER {
+  unsigned char junk[9];
+  unsigned char protocol[1];
+  unsigned char checksum[2];
+
+  union {
+    // for getting the address information both in binary format and long format
+    unsigned char src[4];
+    unsigned long srcl;
+  };
+
+  union {
+    unsigned char dest[4];
+    unsigned long destl;
+  };
+
+};
+
+// this is used to extract the IP address from the IP header in conventional form
+struct IPADDRESS {
+  unsigned char a1,a2,a3,a4;
+};
+
+
+void do_binary_to_string(unsigned char* ip,char* buffer);
+void do_ipaddress_to_string(IPADDRESS ipaddress,char* buffer);
+void do_binary_to_ipaddress(unsigned char* ip,IPADDRESS& ipaddress);
+//char* return_ip_protocol(unsigned char protocol);
+
+
+
+#endif