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The darkstat export format was designed by Ben Stewart.
Note that all integers are stored in network order (big-endian).
FILE HEADER 0xDA314159 darkstat export format
SECTION HEADER 0xDA 'H' 'S' 0x01 hosts_db ver1
HOST COUNT 0x00000001 1 host follows
For each host:
HOST HEADER 'H' 'S' 'T' 0x03 host ver3
ADDRESS FAMILY 0x04 Either 4 or 6.
IPv4 ADDR 0x0A010101 IPv4 10.1.1.1
or for 0x06:
IPv6 ADDR 0x0000 0000 0000 0000 0000 0000 0000 0001
meaning IPv6 ::1
MACADDR 0x001122334455 00:11:22:33:44:55
LASTSEEN 0x0000000048000123 (time_t) 2008-04-12 00:24:03 UTC
HOSTNAME 0x09 "localhost" 9 is the string length
IN 0x0000000000123456 Bytes in: 1193046
OUT 0x0000000000789ABC Bytes out: 7903932
PROTOS DATA 'P' start ip proto data
IP PROTO COUNT 0x03 3 ip_proto entries
IP PROTO 0x06 tcp
IN 0x0000000000123456 Bytes in: 1193046
OUT 0x0000000000789ABC Bytes out: 7903932
IP PROTO 0x11 udp
IN 0x0000000000000444 Bytes in: 1092
OUT 0x0000000000000555 Bytes out: 1365
IP PROTO 0x01 icmp
IN 0x0000000000000001 Bytes in: 1
OUT 0x0000000000000002 Bytes out: 2
TCP DATA 'T' start tcp proto data
TCP PROTO COUNT 0x0001 1 tcp_proto entry
PORT 0x0050 http (port 80)
SYN COUNT 0x0000000000000003 SYNs: 3
IN 0x0000000000000001 Bytes in: 1
OUT 0x0000000000000002 Bytes out: 2
UDP DATA 'U' start udp proto data
UDP PROTO COUNT 0x0001 1 udp_proto entry
PORT 0x0045 tftp (port 69)
IN 0x0000000000000001 Bytes in: 1
OUT 0x0000000000000002 Bytes out: 2
SECTION HEADER 0xDA 'G' 'R' 0x01 graph_db ver1
LAST_TIME (time_t as 64-bit uint)
For each of 4 graphs: (60 seconds, 60 minutes, 24 hours, 31 days)
8 bits - number of bars in this graph
8 bits - index of last_time bar, in the range [0:n_bars)
For each bar:
64 bits - bytes in
64 bits - bytes out
Host header version 1 is just version 2 without the lastseen time.
Host header version 2 is just version 3 without the address family
byte (or the possibility of an IPv6 address).
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