forked from osmocom/wireshark
140 lines
3.9 KiB
Lua
140 lines
3.9 KiB
Lua
-- init.lua
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--
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-- initialize wireshark's lua
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--
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-- This file is going to be executed before any other lua script.
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-- It can be used to load libraries, disable functions and more.
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--
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-- Wireshark - Network traffic analyzer
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-- By Gerald Combs <gerald@wireshark.org>
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-- Copyright 1998 Gerald Combs
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--
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-- SPDX-License-Identifier: GPL-2.0-or-later
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-- Set enable_lua to false to disable Lua support.
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enable_lua = true
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if not enable_lua then
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return
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end
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-- If set and Wireshark was started as (setuid) root, then the user
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-- will not be able to execute custom Lua scripts from the personal
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-- configuration directory, the -Xlua_script command line option or
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-- the Lua Evaluate menu option in the GUI.
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run_user_scripts_when_superuser = true
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function typeof(obj)
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local mt = getmetatable(obj)
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return mt and mt.__typeof or obj.__typeof or type(obj)
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end
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-- the following function checks if a file exists
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-- since 1.11.3
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function file_exists(name)
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local f = io.open(name,"r")
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if f ~= nil then io.close(f) return true else return false end
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end
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-- the following function prepends the given directory name to
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-- the package.path, so that a 'require "foo"' will work if 'foo'
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-- is in the directory name given to this function. For example,
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-- if your Lua file will do a 'require "foo"' and the foo.lua
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-- file is in a local directory (local to your script) named 'bar',
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-- then call this function before doing your 'require', by doing
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-- package.prepend_path("bar")
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-- and that will let Wireshark's Lua find the file "bar/foo.lua"
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-- when you later do 'require "foo"'
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--
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-- Because this function resides here in init.lua, it does not
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-- have the same environment as your script, so it has to get it
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-- using the debug library, which is why the code appears so
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-- cumbersome.
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--
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-- since 1.11.3
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function package.prepend_path(name)
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-- get the function calling this package.prepend_path function
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local dt = debug.getinfo(2, "f")
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if not dt then
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error("could not retrieve debug info table")
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end
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-- get its upvalue
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local _, val = debug.getupvalue(dt.func, 1)
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if not val or type(val) ~= 'table' then
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error("No calling function upvalue or it is not a table")
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end
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-- get the __DIR__ field in its upvalue table
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local dir = val["__DIR__"]
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-- get the platform-specific directory separator character
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local sep = package.config:sub(1,1)
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-- prepend the dir and given name to path
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if dir and dir:len() > 0 then
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package.path = dir .. sep .. name .. sep .. "?.lua;" .. package.path
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end
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-- also prepend just the name as a directory
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package.path = name .. sep .. "?.lua;" .. package.path
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end
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%WTAP_ENCAPS%
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--
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-- Generate the wtap_filetypes items for file types, for backwards
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-- compatibility.
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-- We no longer have WTAP_FILE_TYPE_SUBTYPE_ #defines;
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-- built-in file types are registered the same way that
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-- plugin file types are registered.
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--
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-- New code should use wtap_name_to_file_type_subtype to
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-- look up file types by name.
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--
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wtap_filetypes = get_wtap_filetypes()
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%WTAP_TSPRECS%
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%WTAP_COMMENTTYPES%
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%FT_TYPES%
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-- the following table is since 2.0
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%FT_FRAME_TYPES%
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-- the following table is since 1.12
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%WTAP_REC_TYPES%
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-- the following table is since 1.11.3
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%WTAP_PRESENCE_FLAGS%
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%BASES%
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%ENCODINGS%
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%EXPERT%
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-- the following table is since 1.11.3
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%EXPERT_TABLE%
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%MENU_GROUPS%
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-- the possible values for Pinfo's p2p_dir attribute
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P2P_DIR_UNKNOWN = -1
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P2P_DIR_SENT = 0
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P2P_DIR_RECV = 1
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-- other useful constants
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-- DATA_DIR and USER_DIR have a trailing directory separator.
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GUI_ENABLED = gui_enabled()
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DATA_DIR = Dir.global_config_path()..package.config:sub(1,1)
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USER_DIR = Dir.personal_config_path()..package.config:sub(1,1)
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-- deprecated function names
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datafile_path = Dir.global_config_path
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persconffile_path = Dir.personal_config_path
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if not running_superuser or run_user_scripts_when_superuser then
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dofile(DATA_DIR.."console.lua")
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end
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--dofile(DATA_DIR.."dtd_gen.lua")
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