Wireshark - 1.0 Betriebsanweisung PDF herunterladen (Seite 210)

10.3. Example of Listener written in Lua

-- This program will register a menu that will open a window with a count of occurrences

-- of every address in the capture

local function menuable_tap()

-- Declare the window we will use

local tw = TextWindow.new("Address Counter")

-- This will contain a hash of counters of appereances of a certain address

local ips = {}

-- this is our tap

local tap = Listener.new();

function remove()

-- this way we remove the listener than otherwise will remain running indifinitelly

tap:remove();

end

-- we tell the window to call the remove() function when closed

tw:set_atclose(remove)

-- this function will be called once for each packet

function tap.packet(pinfo,tvb)

local src = ips[tostring(pinfo.src)] or 0

local dst = ips[tostring(pinfo.dst)] or 0

ips[tostring(pinfo.src)] = src + 1

ips[tostring(pinfo.dst)] = dst + 1

end

-- this function will be called once every few seconds to update our window

function tap.draw(t)

tw:clear()

for ip,num in pairs(ips) do

tw:append(ip .. "\t" .. num .. "\n");

end

-- this function will be called whenever a reset is needed

-- e.g. when reloading the capture file

function tap.reset()

tw:clear()

ips = {}

end

-- using this function we register our fuction

-- to be called when the user selects the Tools->Test->Packets menu

register_menu("Test/Packets", menuable_tap, MENU_TOOLS)

end

Lua Support in Wireshark

195

1 2 ... 205 206 207 208 209 210 211 212 213 214 215 ... 283 284

Keine Kommentare

Wireshark - 1.0 Betriebsanweisung Seite 210