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Replace lua function with equivalent bin.unpack

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dmiller
2015-02-25 03:34:30 +00:00
parent 66e235b98e
commit b136a4a80f
1 changed files with 17 additions and 29 deletions
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46
scripts/allseeingeye-info.nse
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@@ -2,6 +2,7 @@ local comm = require "comm"
local nmap = require "nmap"
local shortport = require "shortport"
local string = require "string"
local bin = require "bin"
local bit = require "bit"
local stdnse = require "stdnse"
@@ -131,18 +132,6 @@ author = "Marin Maržić"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = { "discovery", "safe", "version" }
-- Unpacks a string preceded by a 1-byte integer length
-- (+1 for the length byte) from another string, starting
-- at the given position.
-- @param str the string from which to unpack
-- @param pos the position in the string from which to start unpacking (position of the length byte)
-- @return ret_pos the position after the last unpacked byte
-- @return string the unpacked string
local unpack_str = function(str, pos)
local ret_pos = pos + str:byte(pos)
return ret_pos, string.sub(str, pos + 1, ret_pos - 1)
end
portrule = shortport.version_port_or_service({1258,2126,3123,12444,13200,23196,26000,27138,27244,27777,28138}, "allseeingeye", "udp")
action = function(host, port)
@@ -162,23 +151,22 @@ action = function(host, port)
local o = stdnse.output_table()
local pos = 5
pos, o["game"] = unpack_str(data, pos)
pos, o["port"] = unpack_str(data, pos)
pos, o["server name"] = unpack_str(data, pos)
pos, o["game type"] = unpack_str(data, pos)
pos, o["map"] = unpack_str(data, pos)
pos, o["version"] = unpack_str(data, pos)
pos, o["passworded"] = unpack_str(data, pos)
pos, o["num players"] = unpack_str(data, pos)
pos, o["max players"] = unpack_str(data, pos)
pos, o["game"] = bin.unpack("p", data, pos)
pos, o["port"] = bin.unpack("p", data, pos)
pos, o["server name"] = bin.unpack("p", data, pos)
pos, o["game type"] = bin.unpack("p", data, pos)
pos, o["map"] = bin.unpack("p", data, pos)
pos, o["version"] = bin.unpack("p", data, pos)
pos, o["passworded"] = bin.unpack("p", data, pos)
pos, o["num players"] = bin.unpack("p", data, pos)
pos, o["max players"] = bin.unpack("p", data, pos)
-- extract the key-value pairs
local kv = stdnse.output_table()
o["settings"] = kv
while data:byte(pos) ~= 1 do
local key, value
pos, key = unpack_str(data, pos)
pos, value = unpack_str(data, pos)
pos, key, value = bin.unpack("pp", data, pos)
kv[key] = value
end
pos = pos + 1
@@ -193,22 +181,22 @@ action = function(host, port)
local player = stdnse.output_table()
if bit.band(flags, 1) ~= 0 then
pos, player.name = unpack_str(data, pos)
pos, player.name = bin.unpack("p", data, pos)
end
if bit.band(flags, 2) ~= 0 then
pos, player.team = unpack_str(data, pos)
pos, player.team = bin.unpack("p", data, pos)
end
if bit.band(flags, 4) ~= 0 then
pos, player.skin = unpack_str(data, pos)
pos, player.skin = bin.unpack("p", data, pos)
end
if bit.band(flags, 8) ~= 0 then
pos, player.score = unpack_str(data, pos)
pos, player.score = bin.unpack("p", data, pos)
end
if bit.band(flags, 16) ~= 0 then
pos, player.ping = unpack_str(data, pos)
pos, player.ping = bin.unpack("p", data, pos)
end
if bit.band(flags, 32) ~= 0 then
pos, player.time = unpack_str(data, pos)
pos, player.time = bin.unpack("p", data, pos)
end
players["player " .. playernum] = player