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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--- -- Read and parse some of Nmap's data files: nmap-protocols, -- nmap-rpc, nmap-services, and -- nmap-mac-prefixes. -- -- The functions in this module return values appropriate for use with exception -- handling via nmap.new_try. On success, they return true and -- the function result. On failure, they return false and an error message. -- @author Kris Katterjohn 03/2008 -- @author jah 08/2008 -- @copyright Same as Nmap--See https://nmap.org/book/man-legal.html local io = require "io" local nmap = require "nmap" local stdnse = require "stdnse" local string = require "string" local table = require "table" _ENV = stdnse.module("datafiles", stdnse.seeall) --- -- Capture patterns for common data files, indexed by filename. -- @class table -- @name common_files -- @see parse_file local common_files = { ["nmap-rpc"] = { [function(ln) return tonumber( ln:match( "^%s*[^%s#]+%s+(%d+)" ) ) end] = "^%s*([^%s#]+)%s+%d+" }, ["nmap-protocols"] = { [function(ln) return tonumber( ln:match( "^%s*[^%s#]+%s+(%d+)" ) ) end] = "^%s*([^%s#]+)%s+%d+" }, ["nmap-services"] = { ["tcp"] = { [function(ln) return tonumber( ln:match( "^%s*[^%s#]+%s+(%d+)/tcp" ) ) end] = "^%s*([^%s#]+)%s+%d+/tcp" }, ["udp"] = { [function(ln) return tonumber( ln:match( "^%s*[^%s#]+%s+(%d+)/udp" ) ) end] = "^%s*([^%s#]+)%s+%d+/udp" } }, ["nmap-mac-prefixes"] = { [ "^%s*(%w+)%s+[^#]+" ] = "^%s*%w+%s+([^#]+)" } } -- Helper for parse_* functions local parse_and_cache = function(filename) nmap.registry.datafiles = nmap.registry.datafiles or {} if not nmap.registry.datafiles[filename] then local status status, nmap.registry.datafiles[filename] = parse_file(filename) if not status then return false, string.format("Error parsing %s", filename) end end return true, nmap.registry.datafiles[filename] end --- -- Read and parse nmap-protocols. -- -- On success, return true and a table mapping protocol numbers to protocol -- names. -- @return Status (true or false). -- @return Table (if status is true) or error string (if status is false). -- @see parse_file parse_protocols = function() return parse_and_cache("nmap-protocols") end --- -- Read and parse nmap-rpc. -- -- On success, return true and a table mapping RPC numbers to RPC names. -- @return Status (true or false). -- @return Table (if status is true) or error string (if status is false). -- @see parse_file parse_rpc = function() return parse_and_cache("nmap-rpc") end --- -- Read and parse nmap-services. -- -- On success, return true and a table containing two subtables, indexed by the -- keys "tcp" and "udp". The tcp subtable maps TCP port numbers to -- service names, and the udp subtable is the same for UDP. You can -- pass "tcp" or "udp" as an argument to parse_services to get -- only one of the results tables. -- @param protocol The protocol table to return ("tcp" or -- "udp"). -- @return Status (true or false). -- @return Table (if status is true) or error string (if status is false). -- @see parse_file parse_services = function(protocol) if protocol and protocol ~= "tcp" and protocol ~= "udp" then return false, "Bad protocol for nmap-services: use tcp or udp" end local services_table nmap.registry.datafiles = nmap.registry.datafiles or {} nmap.registry.datafiles.services = nmap.registry.datafiles.services or {} if protocol then if not nmap.registry.datafiles.services[protocol] then local status status, nmap.registry.datafiles.services[protocol] = parse_file("nmap-services", protocol) if not status then return false, "Error parsing nmap-services" end end services_table = nmap.registry.datafiles.services[protocol] else local status status, nmap.registry.datafiles.services = parse_file("nmap-services") if not status then return false, "Error parsing nmap-services" end services_table = nmap.registry.datafiles.services end return true, services_table end --- -- Read and parse nmap-mac-prefixes. -- -- On success, return true and a table mapping 3 byte MAC prefixes to manufacturer names. -- @return Status (true or false). -- @return Table (if status is true) or error string (if status is false). -- @see parse_file parse_mac_prefixes = function() return parse_and_cache("nmap-mac-prefixes") end --- -- Read and parse a generic data file. The other parse functions are -- defined in terms of this one. -- -- If filename is a key in common_files, use the corresponding -- capture pattern. Otherwise the second argument must be a table of the kind -- taken by parse_lines. -- @param filename Name of the file to parse. -- @param ... A table of capture patterns. -- @return Boolean status, false on failure -- @return A table whose structure mirrors that of the capture table, -- filled in with captured values. function parse_file(filename, ...) local data_struct -- must have a filename if type( filename ) ~= "string" or filename == "" then return false, "Error in datafiles.parse_file: No file to parse." end -- is filename a member of common_files? is second parameter a key in common_files or is it a table? if common_files[filename] and type( (...) ) == "string" and common_files[filename][(...)] then data_struct = { common_files[filename][(...)] } elseif common_files[filename] and select("#", ...) == 0 then data_struct = { common_files[filename] } elseif type( (...) ) == "table" then data_struct = {...} elseif type( (...) ) ~= "table" then return false, "Error in datafiles.parse_file: Expected second parameter as table." end if type( data_struct ) == "table" then for i, struc in ipairs( data_struct ) do -- check that all varargs are tables if type( struc ) ~= "table" then return false, "Error in datafiles.parse_file: Bad Parameter." end -- allow empty table as sugar for ^(.+)$ capture the whole line if not next( struc ) and #struc == 0 then data_struct[i] = { "^(.+)$" } end end if #data_struct == 0 then return false, "Error in datafiles.parse_file: I've no idea how you want your data." end end -- get a table of lines local status, lines = read_from_file( filename ) if not status then return false, ( "Error in datafiles.parse_file: %s could not be read: %s." ):format( filename, lines ) end -- do the actual parsing local ret = {} for _, ds in ipairs( data_struct ) do status, ret[#ret+1] = parse_lines( lines, ds ) -- hmmm should we fail all if there are any failures? yes? ok if not status then return false, ret[#ret] end end return true, table.unpack( ret ) end --- -- Generic parsing of an array of strings. -- @param lines An array of strings to operate on. -- @param data_struct A table containing capture patterns to be applied -- to each string in the array. A capture will be applied to each string -- using string.match and may also be enclosed within a table or -- a function. If a function, it must accept a string as its parameter and -- should return one value derived from that string. -- @return A table whose structure mirrors that of the capture table, -- filled in with captured values. function parse_lines(lines, data_struct) if type( lines ) ~= "table" or #lines < 1 then return false, "Error in datafiles.parse_lines: No lines to parse." end if type( data_struct ) ~= "table" or not next( data_struct ) then return false, "Error in datafiles.parse_lines: Expected second parameter as a non-empty table." end local ret = {} -- traverse data_struct and enforce sensible index-value pairs. Call functions to process the members of lines. for index, value in pairs( data_struct ) do if type(index) == nil then return false, "Error in datafiles.parse_lines: Invalid index." end if type(index) == "number" or type(value) == "table" then if type(value) == "number" then return false, "Error in datafiles.parse_lines: No patterns for data capture." elseif type(value) == "string" or type(value) == "function" then ret = get_array( lines, value ) elseif type(value) == "table" then local _ _, ret[index] = parse_lines( lines, value ) else -- TEMP stdnse.debug1("Error in datafiles.parse_lines: Index with type %s has unexpected value %s", type(index), type(value)) end elseif type(index) == "string" or type(index) == "function" then if type( value ) == "string" or type( value ) == "function" then ret = get_assoc_array( lines, index, value ) else return false, ( "Error in datafiles.parse_lines: Invalid value for index %s." ):format( index ) end else -- TEMP stdnse.debug1("Error in datafiles.parse_lines: Index with type %s has unexpected value %s", type(index), type(value)) end end return true, ret end --- -- Read a file, line by line, into a table. -- @param file String with the name of the file to read. -- @return Status (true or false). -- @return Array of lines read from the file (if status is true) or error -- message (if status is false). function read_from_file( file ) -- get path to file local filepath = nmap.fetchfile( file ) if not filepath then return false, ( "Error in nmap.fetchfile: Could not find file %s." ):format( file ) end local f, err, _ = io.open( filepath, "r" ) if not f then return false, ( "Error in datafiles.read_from_file: Cannot open %s for reading: %s" ):format( filepath, err ) end local ret = {} for line in f:lines() do ret[#ret+1] = line end f:close() return true, ret end --- -- Return an array-like table of values captured from each line. -- @param lines Table of strings containing the lines to process. -- @param v_pattern Pattern to use on the lines to produce the value for the -- array. get_array = function(lines, v_pattern) local ret = {} for _, line in ipairs( lines ) do assert( type( line ) == "string" ) local captured if type( v_pattern ) == "function" then captured = v_pattern( line ) else captured = line:match( v_pattern ) end table.insert( ret, captured ) end return ret end --- -- Return a table of index-value pairs captured from each line. -- @param lines Table of strings containing the lines to process. -- @param i_pattern Pattern to use on the lines to produce the key for the -- associative array. -- @param v_pattern Pattern to use on the lines to produce the value for the -- associative array. get_assoc_array = function(lines, i_pattern, v_pattern) local ret = {} for _, line in ipairs(lines) do assert( type( line ) == "string" ) local index if type(i_pattern) == "function" then index = i_pattern(line) else index = line:match(i_pattern) end if index and type(v_pattern) == "function" then local m = v_pattern(line) if m then ret[index] = m end elseif index then local m = line:match(v_pattern) if m then ret[index] = m end end end return ret end return _ENV;