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Convert tap userdata to hex string
From: Peter Smith <psmith135 () gmail com>
Date: Sun, 21 Feb 2010 11:05:29 +0200
Hi, I am trying to use Lua script to extract reassembled packet data in wireshark. I have the required packet data stored in a variable with userdata type. Now I need to print that data as a hex string to pass it over stdout to another program. Could someone please help me how to write a lua function to print out a userdata variable as a hex string? I have the following code to get the reassembled WSP payload out of packet in wireshark =================================== wsp_extractor = Field.new("wsp") tap = Listener.new(nil,"wsp") function tap.packet(pinfo,tvb) local wsp_pdu = wsp_extractor() if wsp_pdu then -- print(tostring(wsp_pdu)) -- print ("PDU_LEN: " .. wsp_pdu.label) end end =================================== Using either of the print statements results in error: [string "wsp.lua"]:20: field cannot be represented as string because it may contain invalid characters Thanks.
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- Convert tap userdata to hex string Peter Smith (Feb 21)