p0f v3 + JSON

See docs/README for original readme of p0f v3.

This fork integrates p0f v3 [http://lcamtuf.coredump.cx/p0f3/] with JSON-C [https://github.com/json-c/json-c], enabling to stream JSON-serialized data via the UNIX socket.

In addition, more fields are exposed through JSON, such as raw TCP and HTTP signatures and a number of TCP metrics.

Use new command line argument "-j" to enable JSON output.

Sample output (formatted):

{
  "magic":1345340930,
  "status":16,
  "first_seen":1354940857,
  "last_seen":1354940863,
  "total_conn":8,
  "bad_sw":false,
  "last_nat":0,
  "last_chg":0,
  "up_mod_days":0,
  "distance":0,
  "os_match_q":false,
  "os_name":"Windows",
  "os_flavor":"7 or 8",
  "http_name":"Chrome",
  "http_flavor":"11 or newer",
  "link_type":"Ethernet or modem",
  "language":"English",
  "tcp_sig":{
    "opt_hash":1862996884,
    "quirks":6,
    "opt_eol_pad":0,
    "ip_opt_len":0,
    "ip_ver":4,
    "ttl":128,
    "mss":1460,
    "win":8192,
    "win_type":0,
    "wscale":2,
    "pay_class":0,
    "tot_hdr":52,
    "ts1":0,
    "recv_ms":1354940863453,
    "matched":true,
    "fuzzy":0,
    "dist":0
  },
  "tcp_raw_sig":"4:64+0:0:1460:mss*10,3:mss,nop,nop,sok,nop,ws:df:0",
  "http_raw_sig":"1:Host,Connection=[keep-alive],Accept=[*\/*],User-Agent,Accept-Encoding=[gzip,deflate,sdch],..."
}