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drcom_2011.lua
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--Wireshark dr.com协议插件
--By Lixiang，douniwan5788
--Last Modify 2011/11/29
do --do...end是Lua语言的语句块关键字
--创建一个Proto类的对象，表示一种协议
local p_drcom = Proto("drcom","Dr.com V2011");
--创建几个ProtoField对象，就是主界面中部Packet Details窗格中能显示的那些属性
local pf = p_drcom.fields
pf.f1_1dir = ProtoField.uint8("drcom.times","Times of Dial",base.DEC)
pf.f1_unkonw01 = ProtoField.bytes("drcom.unkonwn","unkonwn01",base.HEX)
pf.f1_unkonw02 = ProtoField.bytes("drcom.fixed","Fixed ver? ",base.HEX)
pf.f2_1dir = ProtoField.bytes("drcom.challenge","Challenge")
local t_code = {[0x01]="Start Request",
[0x02]="Start Response",
[0x03]="Login Auth",
[0x04]="Success",
[0x05]="Failure",
[0x06]="Logout Auth",
[0x07]="Misc",
[0x08]="Unknown, Attention！！",
[0x09]="New Password",
[0x4d]="Message",
[0xfe]="Alive 4 client",
[0xff]="Alive, Client to Server per 20s"
}
pf.f_code = ProtoField.uint8("drcom.code","Code",base.HEX,t_code)
pf.f_authtype = ProtoField.uint8("drcom.authtype","AuthType",base.HEX)
pf.f_subcode = ProtoField.uint8("drcom.subcode","Subcode",base.HEX)
pf.f_cmdlen = ProtoField.uint8("drcom.cmdlen","CMDLength",base.HEX)
local t_type = {[0x25]="Out of money", --0x4d25
[0x26]="alive_4_server", --ox4d26
[0x38]="Server Infomation", --ox4d38
[0x3a]="Notice" --ox4d3a
}
pf.f_type = ProtoField.uint8("drcom.type","Type",base.HEX,t_type)
local t_07type ={ [0x0800]="0800",
[0x1000]="Response for Alive",
[0x1001]="File",
[0x2800]="2800",
[0x3000]="3000",
[0xf400]="Info username,hostname",
}
pf.f_07type = ProtoField.uint16("drcom.07type","Type",base.HEX,t_07type)
local t_misctype ={ [0x00]="Misc Type 0,Response for Alive",
[0x01]="Misc Type 1",
[0x02]="Misc Type 2",
[0x03]="Misc Type 3 (CRC included)",
[0x04]="Misc Type 4",
[0x06]="Misc Type 1,File",
}
pf.f_misctype = ProtoField.uint8("drcom.step","Step",base.HEX,t_misctype)
pf.f_usernamelen = ProtoField.uint8("drcom.usernamelen","Username length",base.DEC)
pf.f_md5a = ProtoField.bytes("drcom.md5a", "MD5A=md5(code +type +challenge +password)") --ubytes
pf.f_username = ProtoField.string("drcom.username", "Username")
pf.f_ControlCheckStatus = ProtoField.string("drcom.ControlCheckStatus", "ControlCheckStatus")
pf.f_macflag = ProtoField.bool("drcom.macflag", "AdapterNum") --ubytes
pf.f_macxor = ProtoField.bytes("drcom.xormac", "MAC xor MD5A") --ubytes
pf.f7 = ProtoField.bytes("drcom.md5b", "MD5B=md5(01 +password +challenge +00*4)") --ubytes
pf.f_niccount = ProtoField.uint8("drcom.niccount", "NIC count")
pf.nicips = ProtoField.ipv4("drcom.nics","NIC's IPs")
pf.nic1_ip = ProtoField.ipv4("drcom.nic1","NIC1 IP")
pf.nic2_ip = ProtoField.ipv4("drcom.nic2","NIC2 IP")
pf.nic3_ip = ProtoField.ipv4("drcom.nic3","NIC3 IP")
pf.nic4_ip = ProtoField.ipv4("drcom.nic4","NIC4 IP")
pf.f_checksum1 =ProtoField.bytes("drcom.checksum1","Checksum1") --ubytes
pf.f11 = ProtoField.bool("drcom.ipdog","IP dog")
pf.f_zeros = ProtoField.bytes("drcom.zeros","Zeros")
pf.f_hostname = ProtoField.string("drcom.hostname","Hostname")
pf.f14 = ProtoField.ipv4("drcom.pdns","Primary Dns")
pf.f15 = ProtoField.ipv4("drcom.dhcp","DHCP Server")
pf.f16 = ProtoField.ipv4("drcom.sdns","Secondary Dns")
pf.f16_1 = ProtoField.uint32("drcom.WINSIP1","WINSIP1")
pf.f16_2 = ProtoField.uint32("drcom.WINSIP2","WINSIP2")
pf.f17 = ProtoField.uint32("drcom.OSVersionInfoSize","OSVersionInfoSize")
pf.f19 = ProtoField.uint32("drcom.major","OS major")
pf.f20 = ProtoField.uint32("drcom.minor","OS minor")
pf.f21 = ProtoField.uint32("drcom.build","OS build")
pf.f22 = ProtoField.uint32("drcom.PlatformID","PlatformID")
pf.f_servicepack = ProtoField.string("drcom.servicepack","servicepack" )
pf.f25_1 = ProtoField.bytes("drcom.version", "ClientVerInfoAndInternetMode")
pf.f25_2 = ProtoField.bytes("drcom.dogversion", "DogVersion")
pf.f25_3 = ProtoField.bytes("drcom.AuthExtDataCode", "AuthExtDataCode")
pf.f25_4 = ProtoField.bytes("drcom.AuthExtDatalen", "AuthExtDataLength")
pf.f26 = ProtoField.uint32("drcom.checksum","CRC",base.HEX) --ubytes
pf.f27 = ProtoField.uint16("drcom.AuthExtDataOption","AuthExtDataOption",base.HEX)
pf.f28 = ProtoField.ether("drcom.mac","MAC" )
pf.f29 = ProtoField.bool("drcom.autologout","Auto logout")
pf.f30 = ProtoField.bool("drcom.brcomcast","Brcomcast mode" )
pf.f_info = ProtoField.string("drcom.info","Infomation")
pf.f_serinfo_unknown = ProtoField.bytes("drcom.unknown","unknown checksum?")
pf.f_EOF = ProtoField.uint8("drcom.eof","EOF")
pf.f_serverIP = ProtoField.ipv4("drcom.svrIP","Server IP")
pf.f_clientIP = ProtoField.ipv4("drcom.cliIP","Client IP")
pf.f_drco = ProtoField.string("drcom.drco","DrcomFlag(Drco)")
pf.f_port = ProtoField.uint16("drcom.port","Port")
pf.f_authinfo = ProtoField.bytes("drcom.authinfo","Auth Infomation")
pf.f_uptime = ProtoField.uint16("drcom.uptime","some time in Seconds",base.DEC)
pf.f_alivefixed=ProtoField.uint32("drcom.unknown","Unknown 01/00")
pf.f_unknownbyte = ProtoField.bytes("drcom.unknownbyte","unknown")
local t_failtype = {[0x01]="Already in use",
[0x02]="server problem",
[0x03]="Username or password error!",
[0x04]="Exceed the balance",
[0x05]="Account is unavailable",
[0x07]="Wrong IP < Account not match 802.1X Account>",
[0x0b]="Wrong MAC should be TODO:XXXX",
[0x14]="To many IPs for the account",
[0x15]="Wrong client version or account has been banned.",
[0x16]="Specified ip and mac for the account",
[0x17]="Server required DHCP mode instead of static mode",
[0x18]="reserved",
[0x19]="reserved",
[0x1A]="reserved",
[0x1B]="reserved",
[0x1C]="reserved",
}
pf.f_failtype = ProtoField.uint8("drcom.failType","Type",base.HEX,t_failtype)
pf.f_bindmac = ProtoField.ether("drcom.bindmac","MAC should be")
pf.f_misccount = ProtoField.uint8("drcom.misccount","Count what?")
pf.f_mm = ProtoField.bytes("drcom.unknown","MM?")
pf.f_responseunnkown = ProtoField.bytes("drcom.unknown","uknown")
pf.f_onlinetime = ProtoField.uint32("drcom.onlinetime","Online Time in Seconds",base.DEC)
pf.f_someflux = ProtoField.uint32("drcom.someflux","some flux?",base.DEC)
pf.f_time2 = ProtoField.uint32("drcom.time2","some time2 in seconds",base.DEC)
pf.f_1000 = ProtoField.uint16("drcom.1000","Carry per 1000 setp ?",base.DEC)
pf.f_file = ProtoField.bytes("drcom.file","File Content")
pf.f_monthflux = ProtoField.float("drcom.monthflux","Month used flux(MB)")
pf.f_monthtime = ProtoField.uint32("drcom.monthtime","Month used time(MIN)")
pf.f_balance = ProtoField.float("drcom.balance","Balance(yuan)",base.DEC)
pf.f_timebalance = ProtoField.float("drcom.timebalance","Time Balance(Minutes)",base.DEC)
pf.f_milliseconds = ProtoField.uint16("drcom.milliseconds","Milliseconds")
pf.f_internetaccessControl = ProtoField.uint32("drcom.InternetAccessControl","InternetAccessControl")
-- local addr = Field.new("ip.addr")
--为Proto对象添加一个名为dissector的函数，
--Wireshark会对每个“相关”数据包调用这个函数
function p_drcom.dissector(buf,pkt,root)
pkt.cols.protocol= p_drcom.name --覆盖协议栏为DRCOM
local subtree = root:add(p_drcom,buf()) --子节点开始
subtree:append_text(", "..buf():len().." bytes ")
--这句是将数据的第一个字节转换成无符号整数
local code_id = buf(0,1):uint()
-- DrCOMHeader
subtree:add(pf.f_code,buf(0,1))
subtree:add(pf.f_authtype,buf(1,1))
subtree:add(pf.f_subcode,buf(2,1))
subtree:add(pf.f_cmdlen,buf(3,1))
pkt.cols.info=t_code[code_id] or "Unknown"
-------------------------------------------------------------------------------------------
if code_id == 0x01 then --complite
-- Challenge
subtree:add(pf.f1_1dir,buf(1,1))
subtree:add_le(pf.f_uptime,buf(2,2))
subtree:add(pf.f1_unkonw02,buf(4,1))
subtree:add(pf.f_zeros,buf(5,15))
elseif code_id == 0x02 then
-- Challenge return
subtree:add(pf.f1_1dir,buf(1,1))
subtree:add_le(pf.f_uptime,buf(2,2))
subtree:add(pf.f2_1dir,buf(4,4))
subtree:add(pf.f_clientIP,buf(20,4))
subtree:add(pf.f_responseunnkown,buf(24,2))
subtree:add(pf.f_mm,buf(26,16))
subtree:add(pf.f_zeros,buf(42,34))
elseif code_id == 0x03 then --complite
-- 用户登录
pkt.cols.info:append(" (Username=\""..buf(20,36):stringz().."\")")
subtree:add(pf.f_type,buf(1,1))
subtree:add(pf.f_usernamelen,buf(3,1),buf(3,1):uint()-20) --usernamelen
subtree:add(pf.f_md5a,buf(4,16))
subtree:add(pf.f_username,buf(20,36))
subtree:add(pf.f_ControlCheckStatus,buf(56,1))
subtree:add(pf.f_macflag,buf(57,1))
subtree:add(pf.f_macxor,buf(58,6))
subtree:add(pf.f7,buf(64,16))
subtree:add(pf.f_niccount,buf(80,1))
local nic_ip = subtree:add(pf.nicips,buf(81,16),buf(81,4):ipv4()) --TODO:what type should be?
nic_ip:add(pf.nic1_ip,buf(81,4))
nic_ip:add(pf.nic2_ip,buf(85,4))
nic_ip:add(pf.nic3_ip,buf(89,4))
nic_ip:add(pf.nic4_ip,buf(93,4))
local md5c = subtree:add(pf.f_checksum1,buf(97,8),"=md5(front + 1400070b)[0:8]") --checksum1-md5c TODO:verify
subtree:add(pf.f11,buf(105,1))
subtree:add(pf.f_zeros,buf(106,4))
subtree:add(pf.f_hostname,buf(110,32))
subtree:add(pf.f14,buf(142,4))
subtree:add(pf.f15,buf(146,4))
subtree:add(pf.f16,buf(150,4))
subtree:add(pf.f16_1,buf(154,4))
subtree:add(pf.f16_2,buf(158,4))
subtree:add(pf.f17,buf(162,4))
subtree:add(pf.f19,buf(166,4))
subtree:add(pf.f20,buf(170,4))
subtree:add(pf.f21,buf(174,4))
subtree:add(pf.f22,buf(178,4))
subtree:add(pf.f_servicepack,buf(182,128))
subtree:add(pf.f25_1,buf(310,1))
subtree:add(pf.f25_2,buf(311,1))
subtree:add(pf.f25_3,buf(312,1))
subtree:add(pf.f25_4,buf(313,1))
subtree:add(pf.f26,buf(314,4))
subtree:add(pf.f27,buf(318,2))
subtree:add(pf.f28,buf(320,6))
subtree:add(pf.f29,buf(326,1))
subtree:add(pf.f30,buf(327,1))
if buf():len()>=330 then
subtree:add(pf.f_unknownbyte,buf(328,2))
end
elseif code_id == 0x04 then
-- Login return
if buf():len()>=37 then
subtree:add(pf.f_fixedUnknown,buf(1,22))
subtree:add_le(pf.f_monthtime,buf(5,4))
subtree:add_le(pf.f_monthflux,buf(9,4),buf(9,4):le_uint()/1024)
subtree:add_le(pf.f_balance,buf(13,4),buf(13,4):le_uint()/100)
local authinfo = subtree:add(pf.f_authinfo,buf(23,16))
authinfo:add(pf.f_drco,buf(23,4))
authinfo:add(pf.f_serverIP,buf(27,4))
authinfo:add(pf.f_port,buf(31,2))
authinfo:add(pf.f_clientIP,buf(33,4))
authinfo:add(pf.f_port,buf(37,2))
authinfo:add(pf.f_milliseconds,buf(39,2))
authinfo:add(pf.f_internetaccessControl,buf(41,4))
-- authinfo:add(pf.f_fixedUnknown,buf(39,6))
end
elseif code_id == 0x05 then
subtree:add(pf.f_failtype,buf(4,1))
pkt.cols.info:append(" ("..(t_failtype[buf(4,1):uint()] or "Unknown")..")")
if buf(4,1):uint()==0x0b then
subtree:add(pf.f_bindmac,buf(5,6))
else
end
elseif code_id == 0x06 then
subtree:add(pf.f_type,buf(1,1))
subtree:add(pf.f_EOF,buf(2,1))
subtree:add(pf.f_usernamelen,buf(3,1),buf(3,1):uint()-20) --usernamelen
subtree:add(pf.f_md5a,buf(4,16))
subtree:add(pf.f_username,buf(20,36))
subtree:add(pf.f_fixedUnknown,buf(56,1))
subtree:add(pf.f_macflag,buf(57,1))
subtree:add(pf.f_macxor,buf(58,6))
local authinfo = subtree:add(pf.f_authinfo,buf(64,16))
authinfo:add(pf.f_drco,buf(64,4))
authinfo:add(pf.f_serverIP,buf(68,4))
authinfo:add(pf.f_unknown,buf(72,2))
authinfo:add(pf.f_clientIP,buf(74,4))
authinfo:add(pf.f_unknown,buf(78,2))
elseif code_id == 0x07 then
subtree:add(pf.f_misccount,buf(1,1))
subtree:add(pf.f_07type,buf(2,2))
pkt.cols.info:append(", "..(t_07type[buf(2,2):uint()] or "Unknown type"))
if buf(2,2):uint() == 0x2800 then
pkt.cols.info:append(", "..t_misctype[buf(5,1):uint()])
subtree:add(pf.f_misctype,buf(5,1))
subtree:add_le(pf.f_1000,buf(8,2))
subtree:add_le(pf.f_time2,buf(10,4))
subtree:add_le(pf.f_someflux,buf(16,4))
subtree:add(pf.f_clientIP,buf(28,4))
elseif buf(2,2):uint() == 0x1000 then --Response for Alive
subtree:add_le(pf.f_uptime,buf(6,2))
subtree:add_le(pf.f_someflux,buf(8,4))
subtree:add(pf.f_clientIP,buf(12,4))
subtree:add(pf.f_mm,buf(16,16))
subtree:add_le(pf.f_onlinetime,buf(32,4))
subtree:add_le(pf.f_monthtime,buf(44,4))
subtree:add_le(pf.f_monthflux,buf(48,4),buf(48,4):le_uint()/1024)
subtree:add_le(pf.f_balance,buf(52,4),buf(52,4):le_uint()/10000)
subtree:add_le(pf.f_timebalance,buf(56,4),buf(56,4):le_uint()/60)
elseif buf(2,2):uint() == 0x1001 then --File
subtree:add_le(pf.f_1000,buf(8,2))
subtree:add_le(pf.f_time2,buf(10,4))
subtree:add(pf.f_mm,buf(16,16))
subtree:add_le(pf.f_file,buf(32,buf():len()-32))
elseif buf(2,2):uint() == 0xf400 then
subtree:add(pf.f_username,buf(32,9)) --FIXME:changeable length
subtree:add(pf.f_hostname,buf(41,48)) --FIXME:changeable length
end
elseif code_id == 0x4d then
subtree:add(pf.f_type,buf(1,1))
pkt.cols.info:append(","..t_type[buf(1,1):uint()])
if buf(1,1):uint() == 0x38 then
subtree:add(pf.f_serinfo_unknown,buf(2,2))
subtree:add(pf.f_info,buf(4))
elseif false then
end
elseif code_id == 0xff then
-- Ping server
subtree:add(pf.f_md5a,buf(1,16))
subtree:add(pf.f_zeros,buf(17,3))
local authinfo = subtree:add(pf.f_authinfo,buf(20,16))
authinfo:add(pf.f_drco,buf(20,4))
authinfo:add(pf.f_serverIP,buf(24,4))
authinfo:add(pf.f_port,buf(28,2))
authinfo:add(pf.f_clientIP,buf(30,4))
authinfo:add(pf.f_port,buf(34,2))
authinfo:add(pf.f_milliseconds,buf(36,2))
authinfo:add(pf.f_internetaccessControl,buf(38,4))
end
--local dissector = protos[0]
--if dissector ~= nil then
---- dissector:call(buf(2):tvb(),pkt,root)
--elseif code_id < 2 then
---- subtree:add(pf.f_text,buf(2))
---- pkt.cols.info:set(buf(2,buf:len() - 3):string())
--else
----调用另外一个dissector
---- data_dis:call(buf(2):tvb(),pkt,root) -- 如果还有剩余数据，作为一般的Data段进行解析
--end
end
--所有的dissector都是以“table”的形式组织的，table表示上级协议
local wtap_encap_table = DissectorTable.get("wtap_encap")
--这个是获得udp协议的DissectorTable，并且以端口号排列
local udp_encap_table = DissectorTable.get("udp.port")
wtap_encap_table:add(wtap.USER15,p_drcom)
wtap_encap_table:add(wtap.USER12,p_drcom)
--为UDP的61440端口注册这个Proto对象，
--当遇到源或目的为UDP61440的数据包，就会调用上面的p_drcom.dissector函数
udp_encap_table:add(61440,p_drcom)
end