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Copy pathsimple-huaweip.lua
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simple-huaweip.lua
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-- Define Huawei Portal Protocol
local p_huaweip = Proto("huaweip", "Huawei Protocol");
-- Define fields
-- field: version
local f_ver = ProtoField.uint8("huaweip.ver", "Version",base.HEX, {
[0x02] = "Huawei 2",
})
-- field: request/response type
local action_val_map={
[0x02] = "(2) Action2",
[0x03] = "(3)REQ_AUTH",
[0x04] = "(4)ACK_AUTH",
[0x05] = "(5)REQ_LOGOUT",
[0x06] = "(6)ACK_LOGOUT",
[0x07] = "(7)AFF_ACK_ATH",
[0x08] = "(8)NTF_LOGOUT",
[0x09] = "(9)REQ_INFO"
}
local f_type = ProtoField.uint8("huaweip.type", "type",base.HEX,action_val_map)
-- field: method
local f_method = ProtoField.uint8("huaweip.method", "method",base.HEX, {
[0x01] = "PAP",
[0x02] = "Method 2",
[0x03] = "Method 3",
[0x04] = "Method 4",
[0x07] = "Method 7",
[0x08] = "Method 8",
})
-- field: reserved
local f_Rsv = ProtoField.uint8("huaweip.Rsv", "Rsv",base.HEX, {
})
-- field: serial Number
local f_SerialNo = ProtoField.uint8("huaweip.SerialNo", "SerialNo",base.DEC)
-- field: request ID
local f_ReqID = ProtoField.uint8("huaweip.ReqID", "ReqID",base.DEC)
-- field: user IP
local f_UserIP = ProtoField.ipv4("huaweip.UserIP", "UserIP")
-- field: user port
local f_UserPort = ProtoField.uint8("huaweip.UserPort", "UserPort",base.DEC)
-- field: error code
local error_val_map={
[-999]="系统繁忙，请稍候再试。system is busy, please try again later / Socket closed / Socket is closed/ Other Excption",
[-2]="Request in Process. (double click filter)",
[-1]="系统繁忙，请稍候再试。system is busy, please try again later",
[0]="用户认证成功",
[1]="用户认证请求被拒绝Authentication rejected",
[2]="连接已建立Connection has been established",
[3]="已有用户正在认证过程中，请稍后再试",
[4]="认证失败Authentication failed",
[5]="认证失败Authentication failed",
[6]="认证失败Authentication failed",
[7]="认证失败Authentication failed",
}
local f_ErrCode = ProtoField.int8("huaweip.ErrCode", "ErrCode",base.DEC,error_val_map)
-- field: attribute number
local f_AttrNum = ProtoField.uint8("huaweip.AttrNum", "AttrNum",base.DEC)
-- field: authenticator
local f_AuthenticatorOut = ProtoField.bytes("huaweip.AuthenticatorOut", "AuthenticatorOut")
-- field: attribute type
local attr_val_map={
[0x01] = "UserName",
[0x02] = "PassWord",
[0x03] = "Challenge",
[0x05] = "TextInfo",
[0x06] = "Undefined",
[0x07] = "Undefined",
[0x08] = "Port",
[0x0b] = "User_Mac",
[0x0d] = "User_Private_IP",
[0x40] = "WebAuthenInfo",
[0xF1] = "User_IPV6",
}
local f_attrType=ProtoField.uint32("huaweip.attrType", "attrType",base.HEX,attr_val_map )
-- field: whole attribute
local f_attr=ProtoField.none("huaweip.attr", "attr",base.HEX)
-- field: length of the attribute
local f_attrLen=ProtoField.uint32("huaweip.attrLen", "attrLen",base.DEC)
-- field: hex content of attribute
local f_attrContent=ProtoField.uint32("huaweip.f_attrContent", "f_attrContent",base.HEX)
-- field: string content of attribute
local f_attrStringContent=ProtoField.string("huaweip.attrStringContent", "attrStringContent")
-- declare all fields for the huawei protocol
p_huaweip.fields = { f_ver, f_type,f_method,f_Rsv,f_SerialNo, f_ReqID,f_UserIP,f_UserPort,f_ErrCode,f_AttrNum,f_AuthenticatorOut,f_attr,f_attrType,f_attrLen,f_attrContent ,f_attrStringContent}
local data_dis = Dissector.get("data")
function p_huaweip.dissector(buf, pkt, tree)
-- local action_val_map={
-- [2] = "(2) Action2",
-- [3] = "(3)REQ_AUTH",
-- [4] = "(4)ACK_AUTH",
-- [5] = "(5)REQ_LOGOUT",
-- [7] = "(7)AFF_ACK_ATH",
-- [8] = "(8)NTF_LOGOUT",
-- [9] = "(9)REQ_INFO"
-- }
-- add attributes to tree
local subtree = tree:add(p_huaweip, buf(0))
subtree:add(f_ver, buf(0,1))
subtree:add(f_type, buf(1,1))
subtree:add(f_method, buf(2,1))
subtree:add(f_Rsv, buf(3,1))
subtree:add(f_SerialNo, buf(4,2))
subtree:add(f_ReqID, buf(6,2))
subtree:add(f_UserIP, buf(8,4))
subtree:add(f_UserPort, buf(12,2))
subtree:add(f_ErrCode, buf(14,1))
subtree:add(f_AttrNum, buf(15,1))
subtree:add(f_AuthenticatorOut, buf(16,16))
-- subtree:add(f_method, buf(2,1))
-- subtree:add(f_method, buf(2,1))
local stringSwitch={
[1] = "UserName",
[2] = "PassWord",
[5] = "TextInfo",
}
local macSwitch={
[0x0b] = "User_Mac",
}
local attrNum = buf(15,1):uint()
local pointer=32
-- build tree for every attribute
-- add every attribute to parent tree
for i=1,attrNum do
local attrType = buf(pointer,1)
local attrLen=buf(pointer+1,1):uint()
local attrTree=subtree:add(f_attr,buf(pointer,attrLen))
attrTree:add(f_attrType,attrType )
attrTree:add(f_attrLen,attrLen )
local attrTypeForSwitch = buf(pointer,1):uint()
local attrContent=buf(pointer+2,attrLen-2)
if(stringSwitch[attrTypeForSwitch]) then
attrTree:add(f_attrStringContent,attrContent )
elseif (macSwitch[attrTypeForSwitch])then
attrTree:add(f_attrStringContent,tostring( buf(pointer+2,attrLen-2):ether()))--tostring(attrContent:ether())
else
attrTree:add(f_attrContent,attrContent )--default
end
pointer=pointer+attrLen
end
--set info column as eg."(2) Action2 ...."
if pkt.columns.info then
pkt.columns.info:preppend(action_val_map[buf(1,1):uint()] .. " ")
end
--set protocol column as "Huawei Protocol"
if pkt.columns.protocol then
pkt.columns.protocol:set("Huawei Protocol")
end
end
-- grep the packet from udp port 2000 and 50100
local udp_encap_table = DissectorTable.get("udp.port")
udp_encap_table:add(2000, p_huaweip)
udp_encap_table:add(50100, p_huaweip)