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#ifndef _RAWPING_H
#define _RAWPING_H
// ICMP protocol identifier
#define ICMP_PROTO 1
// ICMP packet types
#define PT_ICMP_ECHO_REPLY 0
#define PT_ICMP_DEST_UNREACH 3
#define PT_ICMP_TTL_EXPIRE 11
#define PT_ICMP_ECHO_REQUEST 8
#define PT_ICMP_SOURCE_QUENCH 4
// Minimum ICMP packet size, in bytes
#define ICMP_MIN 8
#ifdef _MSC_VER
// The following two structures need to be packed tightly, but unlike
// Borland C++, Microsoft C++ does not do this by default.
#pragma pack(1)
#endif
// The IP header
struct IPHeader {
BYTE h_len:4; // Length of the header in dwords
BYTE version:4; // Version of IP
BYTE tos; // Type of service
USHORT total_len; // Length of the packet in dwords
USHORT ident; // unique identifier
USHORT flags; // Flags
BYTE ttl; // Time to live
BYTE proto; // Protocol number (TCP, UDP etc)
USHORT checksum; // IP checksum
ULONG source_ip;
ULONG dest_ip;
};
// ICMP header
struct ICMPHeader {
BYTE type; // ICMP packet type
BYTE code; // Type sub code
USHORT checksum;
USHORT id;
USHORT seq;
};
#ifdef _MSC_VER
#pragma pack()
#endif
extern USHORT ip_checksum(USHORT* buffer, int size);
extern int init_raw_ping();
extern int raw_ping(char *host, int timeout);
extern int cleanup_raw_ping();
#endif
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