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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--- -- The AMQP library provides some basic functionality for retrieving information -- about an AMQP server's properties. -- -- Summary -- ------- -- The library currently supports the AMQP 0-9 and 0-8 protocol specifications. -- -- Overview -- -------- -- The library contains the following classes: -- -- o AMQP -- - This class contains the core functions needed to communicate with AMQP -- -- @args amqp.version Can be used to specify the client version to use (currently, 0-8, 0-9 or 0-9-1) -- -- @copyright Same as Nmap--See https://nmap.org/book/man-legal.html -- @author Sebastian Dragomir -- Version 0.1 -- Created 05/04/2011 - v0.1 - created by Sebastian Dragomir local match = require "match" local nmap = require "nmap" local stdnse = require "stdnse" local string = require "string" local table = require "table" _ENV = stdnse.module("amqp", stdnse.seeall); AMQP = { -- protocol versions sent by the server versions = { [0x0800] = "0-8", [0x0009] = "0-9" }, -- version strings the client supports client_version_strings = { ["0-8"] = "\x01\x01\x08\x00", ["0-9"] = "\x00\x00\x09\x00", ["0-9-1"] = "\x00\x00\x09\x01" }, new = function(self, host, port) local o = {} setmetatable(o, self) self.__index = self o.host = host o.port = port o.amqpsocket = nmap.new_socket() o.cli_version = self.client_version_strings[nmap.registry.args['amqp.version']] or self.client_version_strings["0-9-1"] o.protover = nil o.server_version = nil o.server_product = nil o.serer_properties = nil return o end, --- Connects the AMQP socket connect = function(self) local data, status, msg status, msg = self.amqpsocket:connect(self.host, self.port, "tcp") return status, msg end, --- Disconnects the AMQP socket disconnect = function(self) self.amqpsocket:close() end, --- Decodes a table value in the server properties field. -- -- @param tbl the decoded table -- @param tsize number, the table size in bytes -- @return status, true on success, false on failure -- @return error string containing error message if status is false -- @return decoded value decodeTable = function(self, tbl, tsize) local status, err, tmp, read, value read = 0 while read < tsize do local key, value status, tmp = self.amqpsocket:receive_buf(match.numbytes(1), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading key length", nil end read = read + 1 tmp = string.unpack("B", tmp) status, key = self.amqpsocket:receive_buf(match.numbytes(tmp), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading key", nil end read = read + tmp status, tmp = self.amqpsocket:receive_buf(match.numbytes(1), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading value type for " .. key, nil end read = read + 1 if ( tmp == 'F' ) then -- table type status, tmp = self.amqpsocket:receive_buf(match.numbytes(4), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading table size", nil end read = read + 4 value = {} tmp = string.unpack(">I4", tmp) status, err, value = self:decodeTable(value, tmp) read = read + tmp table.insert(tbl, key .. ": ") table.insert(tbl, value) elseif ( tmp == 'S' ) then -- string type status, err, value, read = self:decodeString(key, read) if ( key == "product" ) then self.server_product = value elseif ( key == "version" ) then self.server_version = value end table.insert(tbl, key .. ": " .. value) elseif ( tmp == 't' ) then -- boolean type status, err, value, read = self:decodeBoolean(key, read) table.insert(tbl, key .. ": " .. value) end if ( not(status) ) then return status, err, nil end end return true, nil, tbl end, --- Decodes a string value in the server properties field. -- -- @param key string, the key being read -- @param read number, number of bytes already read -- @return status, true on success, false on failure -- @return error string containing error message if status is false -- @return decoded value -- @return number of bytes read after decoding this value decodeString = function(self, key, read) local value, status, tmp status, tmp = self.amqpsocket:receive_buf(match.numbytes(4), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading value size for " .. key, nil, 0 end read = read + 4 tmp = string.unpack(">I4", tmp) status, value = self.amqpsocket:receive_buf(match.numbytes(tmp), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading value for " .. key, nil, 0 end read = read + tmp return true, nil, value, read end, --- Decodes a boolean value in the server properties field. -- -- @param key string, the key being read -- @param read number, number of bytes already read -- @return status, true on success, false on failure -- @return error string containing error message if status is false -- @return decoded value -- @return number of bytes read after decoding this value decodeBoolean = function(self, key, read) local status, value status, value = self.amqpsocket:receive_buf(match.numbytes(1), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading value for " .. key, nil, 0 end value = string.unpack("B", value) read = read + 1 return true, nil, value == 0x01 and "YES" or "NO", read end, --- Performs the AMQP handshake and determines -- * The AMQP protocol version -- * The server properties/capabilities -- -- @return status, true on success, false on failure -- @return error string containing error message if status is false handshake = function(self) local _, status, err, version, tmp, value, properties status = self.amqpsocket:send( "AMQP" .. self.cli_version ) if ( not(status) ) then return false, "ERROR: AMQP:handshake failed while sending client version" end status, tmp = self.amqpsocket:receive_buf(match.numbytes(11), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading frame header" end -- check if the server rejected our proposed version if ( #tmp ~= 11 ) then if ( #tmp == 8 and string.unpack(">I4", tmp) == 0x414D5150 ) then local vi, vii, v1, v2, v3, v4, found vi = string.unpack(">I4", tmp, 5) found = false -- check if we support the server's version for _, v in pairs( self.client_version_strings ) do vii = string.unpack(">I4", v) if ( vii == vi ) then version = v found = true break end end -- try again with new version string if ( found and version ~= self.cli_version ) then self.cli_version = version self:disconnect() status, err = self:connect() if ( not(status) ) then return status, err end return self:handshake() end -- version unsupported v1, v2, v3, v4 = string.unpack(">BBBB", tmp, 5) return false, ("ERROR: AMQP:handshake unsupported version (%d.%d.%d.%d)"):format( v1, v2, v3, v4 ) else return false, ("ERROR: AMQP:handshake server might not be AMQP, received: %s"):format( tmp ) end end -- parse frame header local frametype, chnumber, framesize, method = string.unpack(">BI2I4I4", tmp) stdnse.debug1("frametype: %d, chnumber: %d, framesize: %d, method: %d", frametype, chnumber, framesize, method) if (frametype ~= 1) then return false, ("ERROR: AQMP:handshake expected header (1) frame, but was %d"):format(frametype) end if (method ~= 0x000A000A) then return false, ("ERROR: AQMP:handshake expected connection.start (0x000A000A) method, but was %x"):format(method) end -- parse protocol version status, tmp = self.amqpsocket:receive_buf(match.numbytes(2), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading version" end version = string.unpack(">I2", tmp) self.protover = AMQP.versions[version] if ( not(self.protover) ) then return false, ("ERROR: AMQP:handshake unsupported version (%x)"):format(version) end -- parse server properties status, tmp = self.amqpsocket:receive_buf(match.numbytes(4), true) if ( not(status) ) then return status, "ERROR: AMQP:handshake connection closed unexpectedly while reading server properties size" end local tablesize = string.unpack(">I4", tmp) properties = {} status, err, properties = self:decodeTable(properties, tablesize) if ( not(status) ) then return status, err end status, err, value, tmp = self:decodeString("mechanisms", 0) if ( not(status) ) then return status, err end table.insert(properties, "mechanisms: " .. value) status, err, value, tmp = self:decodeString("locales", 0) if ( not(status) ) then return status, err end table.insert(properties, "locales: " .. value) self.server_properties = properties return true end, --- Returns the protocol version reported by the server -- -- @return string containing the version number getProtocolVersion = function( self ) return self.protover end, --- Returns the product version reported by the server -- -- @return string containing the version number getServerVersion = function( self ) return self.server_version end, --- Returns the product name reported by the server -- -- @return string containing the product name getServerProduct = function( self ) return self.server_product end, --- Returns the properties reported by the server -- -- @return table containing server properties getServerProperties = function( self ) return self.server_properties end, } return _ENV;