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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ--- -- Report file and directory listings. -- -- For scripts that gather and report directory listings, this script provides -- a common output format and helpful script arguments. -- -- The arguments can either be set for all the scripts using this -- module (--script-args ls.arg=value) or for one particular script -- (--script-args afp-ls.arg=value). If both are specified for the -- same argument, the script-specific value is used. -- -- @args ls.maxdepth The maximum depth to recurse into a directory. If less -- than 0 (e.g. -1) then recursion is unlimited. -- (default: 0, no recursion). -- @args ls.maxfiles The maximum number of files to return. Set to 0 or less to -- disable this limit. (default: 10). -- @args ls.checksum (boolean) Download each file and calculate a -- SHA1 checksum. Although this is a module -- argument, the implementation is done in each -- script and is currently only supported by smb-ls -- and http-ls -- @args ls.errors (boolean) Report errors -- @args ls.empty (boolean) Report empty volumes (with no information -- or error) -- @args ls.human (boolean) Show file sizes in human-readable format with K, -- M, G, T, P suffixes. Some services return human-readable -- sizes natively; in these cases, the size is reported as -- given. -- -- @author Pierre Lalet -- @copyright Same as Nmap--See https://nmap.org/book/man-legal.html ----------------------------------------------------------------------- local LIBRARY_NAME = "ls" local math = require "math" local stdnse = require "stdnse" local string = require "string" local tab = require "tab" local table = require "table" _ENV = stdnse.module("ls", stdnse.seeall) local config_values = { ["maxdepth"] = 1, ["maxfiles"] = 10, ["checksum"] = false, ["errors"] = false, ["empty"] = false, ["human"] = false, } --- Convert an argument to its expected type local function convert_arg(argval, argtype) if argtype == "number" then return tonumber(argval) elseif argtype == "boolean" then if argval == "false" or argval == "no" or argval == "0" then return false else return true end end return argval end --- Update config_values using module arguments ("ls.argname", as -- opposed to script-specific arguments, "http-ls.argname") for argname, argvalue in pairs(config_values) do local argval = stdnse.get_script_args(LIBRARY_NAME .. "." .. argname) if argval ~= nil then config_values[argname] = convert_arg(argval, type(argvalue)) end end --- Get a config value from (by order or priority): -- 1. a script-specific argument (e.g., http-ls.argname) -- 2. a module argument (ls.argname) -- 3. the default value -- @param argname The name of the configuration parameter -- @return The configuration value function config(argname) local argval = stdnse.get_script_args(stdnse.getid() .. "." .. argname) if argval == nil then return config_values[argname] else return convert_arg(argval, type(config_values[argname])) end end --- Create a new script output. -- @return The ls output object to be passed to other functions function new_listing() local output = stdnse.output_table() output['curvol'] = nil output['volumes'] = {} output['errors'] = {} output['info'] = {} output['total'] = { ['files'] = 0, ['bytes'] = 0, } return output end --- Create a new volume within the provided output -- @param output The ls output object, from new_listing() -- @param name The name of the volume -- @param hasperms Boolean true if the volume listing will include permissions function new_vol(output, name, hasperms) local curvol = stdnse.output_table() local files = tab.new() local i = 1 if hasperms then tab.add(files, 1, "PERMISSION") tab.add(files, 2, "UID") tab.add(files, 3, "GID") i = 4 end tab.add(files, i, "SIZE") tab.add(files, i + 1, "TIME") tab.add(files, i + 2, "FILENAME") if config("checksum") then tab.add(files, i + 3, "CHECKSUM") end tab.nextrow(files) curvol['name'] = name curvol['files'] = files curvol['count'] = 0 curvol['bytes'] = 0 curvol['errors'] = {} curvol['info'] = {} curvol['hasperms'] = hasperms output['curvol'] = curvol end --- Report an error, using stdnse.debug() and (depending on the -- configuration settings) adding the error message to the output. -- @param output The ls output object, from new_listing() -- @param err The error message to report -- @param level The debug level (default: 1) function report_error(output, err, level) level = level or 1 if output["curvol"] == nil then stdnse.debug(level, string.format("error: %s", err)) else stdnse.debug(level, string.format("error [%s]: %s", output["curvol"]["name"], err)) end if config('errors') then if output["curvol"] == nil then table.insert(output["errors"], err) else table.insert(output["curvol"]["errors"], err) end end end --- Report information, using stdnse.debug() and adding the message -- to the output. -- @param output The ls output object, from new_listing() -- @param info The info message to report -- @param level The debug level (default: 1) function report_info(output, info, level) level = level or 1 if output["curvol"] == nil then stdnse.debug(level, string.format("info: %s", info)) table.insert(output["info"], info) else stdnse.debug(level, string.format("info [%s]: %s", output["curvol"]["name"], info)) table.insert(output["curvol"]["info"], info) end end local units = { ["k"] = 1024, ["m"] = 1024^2, ["g"] = 1024^3, ["t"] = 1024^4, ["p"] = 1024^5, } --- Get a size as an integer from a (possibly) human readable input. local function get_size(size) local bsize = tonumber(size) if bsize == nil then local unit = string.lower(string.sub(size, -1, -1)) bsize = tonumber(string.sub(size, 0, -2)) if units[unit] ~= nil and bsize ~= nil then bsize = bsize * units[unit] local sigfigs = #(string.match(size, "[0-9.]+")) if string.find(size, "%.") then sigfigs = sigfigs - 1 end local d = math.ceil(math.log(bsize, 10)) local power = sigfigs - d local magnitude = 10^power local shifted = math.floor(bsize * magnitude) bsize = math.floor(shifted / magnitude) else bsize = nil end end return bsize end --- Add a new file to the current volume. -- @param output The ls output object, from new_listing() -- @param file A table containing the information about the file -- @return Boolean true if the script may continue adding files, false if -- maxfiles has been reached. function add_file(output, file) local curvol = output.curvol local files = curvol["files"] for i, info in ipairs(file) do tab.add(files, i, tostring(info)) end local size = get_size(file[curvol.hasperms and 4 or 1]) if size then curvol["bytes"] = curvol["bytes"] + size end tab.nextrow(files) curvol["count"] = curvol["count"] + 1 return (config("maxfiles") == 0 or config("maxfiles") == nil or config("maxfiles") > curvol["count"]) end --- Close the current volume. It is mandatory to call this function -- before calling new_vol() again or before calling end_listing(). -- @param output The ls output object, from new_listing() function end_vol(output) local curvol = output.curvol local vol = {["volume"] = curvol["name"]} local empty = true -- "files" is a tab.lua table, so row 1 is the table heading if #curvol["files"] ~= 1 then vol["files"] = curvol["files"] empty = false end if #curvol["errors"] ~= 0 then vol["errors"] = curvol["errors"] empty = false end if #curvol["info"] ~= 0 then vol["info"] = curvol["info"] empty = false end if not empty or config("empty") then table.insert(output["volumes"], vol) end output["total"]["files"] = output["total"]["files"] + curvol["count"] output["total"]["bytes"] = output["total"]["bytes"] + curvol["bytes"] output["curvol"] = nil end --- Convert a files table to structured data. local function files_to_structured(files) local result = {} local fields = table.remove(files, 1) for i=1, #fields do fields[i] = string.lower(fields[i]) end for i, file in ipairs(files) do result[i] = {} for j, value in ipairs(file) do result[i][fields[j]] = value end end return result end --- Convert a files table to human readable data. local function files_to_readable(files) local outtab = tab.new() local fields = files[1] local isize tab.addrow(outtab, table.unpack(fields)) for i, field in ipairs(fields) do if string.lower(field) == "size" then isize = i break end end local units = {"K", "M", "G", "T", "P"} for i = 2, #files do local outfile = {} for j, value in ipairs(files[i]) do outfile[j] = value end if config("human") then local size = tonumber(outfile[isize]) -- If tonumber didn't work, it's already in human-readable format if size ~= nil then local iunit = 0 while size > 1024 and units[iunit+1] do size = size / 1024 iunit = iunit + 1 end if units[iunit] then outfile[isize] = string.format("%.1f %s", size, units[iunit]) else outfile[isize] = tostring(size) end end end tab.addrow(outtab, table.unpack(outfile)) end return tab.dump(outtab) end --- Close current listing. Return both the structured and the human -- readable outputs. -- @param output The ls output object, from new_listing() -- @return Structured output -- @return Human readable output function end_listing(output) assert(output["curvol"] == nil) local text = {} local empty = true if #output["info"] == 0 then output["info"] = nil else for _, line in ipairs(output["info"]) do text[#text + 1] = line end empty = false end if #output["errors"] == 0 then output["errors"] = nil else for _, line in ipairs(output["errors"]) do text[#text + 1] = string.format("ERROR: %s", line) end empty = false end if #output["volumes"] == 0 then output["volumes"] = nil output["total"] = nil else for _, volume in ipairs(output["volumes"]) do text[#text + 1] = string.format("Volume %s", volume["volume"]) if volume["info"] then for _, line in ipairs(volume["info"]) do text[#text + 1] = string.format(" %s", line) end end if volume["errors"] then for _, line in ipairs(volume["errors"]) do text[#text + 1] = string.format(" ERROR: %s", line) end end if volume["files"] then text[#text + 1] = files_to_readable(volume["files"]) volume["files"] = files_to_structured(volume["files"]) end text[#text + 1] = "" end empty = false end if empty then return nil else return output, table.concat(text, "\n") end end return _ENV