47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
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// wire.h
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//
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// Structures used for sending packets over the wire
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//
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#define ICMP_ECHO 8
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#define ICMP_ECHOREPLY 0
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#define ICMP_MIN 8 // minimum 8 byte icmp packet (just header)
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/* The IP header */
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typedef struct iphdr {
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unsigned int h_len:4; // length of the header
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unsigned int version:4; // Version of IP
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unsigned char tos; // Type of service
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unsigned short total_len; // total length of the packet
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unsigned short ident; // unique identifier
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unsigned short frag_and_flags; // flags
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unsigned char ttl;
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unsigned char proto; // protocol (TCP, UDP etc)
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unsigned short checksum; // IP checksum
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unsigned int sourceIP;
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unsigned int destIP;
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}IpHeader;
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//
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// ICMP header
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//
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typedef struct _ihdr {
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BYTE i_type;
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BYTE i_code; /* type sub code */
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USHORT i_cksum;
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USHORT i_id;
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USHORT i_seq;
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/* This is not the std header, but we reserve space for time */
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ULONG timestamp;
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}IcmpHeader;
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#define STATUS_FAILED 0xFFFF
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#define DEF_PACKET_SIZE 32
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#define MAX_PACKET 1024
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#define xmalloc(s) HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,(s))
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#define xfree(p) HeapFree (GetProcessHeap(),0,(p))
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