+++ /dev/null
-
-p_nsdp=Proto("nsdp", "Netgear Switch Description Protocol")
-
-local f_version=ProtoField.uint8("nsdp.version", "Version", base.DEC)
-local f_code=ProtoField.uint8("nsdp.code", "Operation Code", base.DEC)
-local f_error=ProtoField.uint8("nsdp.error", "Error Code", base.DEC)
-local f_errattr=ProtoField.uint16("nsdp.errattr", "Erroneous Attribute", base.HEX)
-local f_clientmac=ProtoField.ether("nsdp.clientmac", "Client MAC")
-local f_switchmac=ProtoField.ether("nsdp.switchmac", "Switch MAC")
-local f_seqnum=ProtoField.uint32("nsdp.seqnum", "Sequence Number", base.DEC)
-
-p_nsdp.fields={
- f_version, f_code, f_error, f_errattr, f_clientmac, f_switchmac, f_seqnum
-}
-
-
-
-
-
-local op_codes={
- [1]="Read Request",
- [2]="Read Reply",
- [3]="Write Request",
- [4]="Write Reply"
-}
-
-
-local error_codes={
- [0]="OK",
- [5]="Invalid Value",
- [7]="Invalid Password"
-}
-
-
-local status_codes={
- [0]="down",
- [4]="100M",
- [5]="1000M"
-}
-
-
-local bitrates_codes={
- [0]="unlimited",
- [1]="512K",
- [2]="1M",
- [3]="2M",
- [4]="4M",
- [5]="8M",
- [6]="16M",
- [7]="32M",
- [8]="64M",
- [9]="128M",
- [10]="256M",
- [11]="512M"
-}
-
-
-local vlan_type_codes={
- [1]="port basic",
- [2]="port advanced",
- [3]="802.1Q basic",
- [4]="802.1Q advanced"
-}
-
-
-local qos_type_codes={
- [1]="port based",
- [2]="802.1p"
-}
-
-
-local prio_codes={
- [1]="high",
- [2]="medium",
- [3]="normal",
- [4]="low"
-}
-
-
-
-
-local function dissect_port_statistics (buffer, offset, subtree)
-
- subtree:add(buffer(offset+4, 1), string.format("Port: %i", buffer(offset+4, 1):uint()))
- subtree:add(buffer(offset+4+1+8*0, 8), "Received:", tostring(buffer(offset+4+1+8*0, 8):uint64()))
- subtree:add(buffer(offset+4+1+8*1, 8), "Sent: ", tostring(buffer(offset+4+1+8*1, 8):uint64()))
- subtree:add(buffer(offset+4+1+8*5, 8), "CRC Errors:", tostring(buffer(offset+4+1+8*5, 8):uint64()))
-
-end
-
-
-
-local function dissect_port_status (buffer, offset, subtree)
-
- local st=buffer(offset+5, 1):uint()
- subtree:add(buffer(offset+4, 1), string.format("Port: %i", buffer(offset+4, 1):uint()))
- subtree:add(buffer(offset+5, 1), string.format("Status: %i (%s)", st, status_codes[st] or "unk"))
-
-end
-
-
-
-local function dissect_qos_type (buffer, offset, subtree)
-
- local t=buffer(offset+4, 1):uint()
- subtree:add(buffer(offset+4, 1), string.format("QoS Type: %i (%s)", t, qos_type_codes[t] or "unk"))
-
-end
-
-
-
-local function dissect_qos_config (buffer, offset, subtree)
-
- local p=buffer(offset+5, 1):uint()
- subtree:add(buffer(offset+4, 1), string.format("Port: %i", buffer(offset+4, 1):uint()))
- subtree:add(buffer(offset+5, 1), string.format("Priority: %i (%s)", p, prio_codes[p] or "unk"))
-
-end
-
-
-
-local function dissect_bitrate (buffer, offset, subtree)
-
- local sp=buffer(offset+5, 4):uint()
- subtree:add(buffer(offset+4, 1), string.format("Port: %i", buffer(offset+4, 1):uint()))
- subtree:add(buffer(offset+5, 4), string.format("Speed: %i (%s)", sp, bitrates_codes[sp] or "unk"))
-
-end
-
-
-
-local function dissect_vlan_type (buffer, offset, subtree)
-
- local vt=buffer(offset+4, 1):uint()
- subtree:add(buffer(offset+4, 1), string.format("VLAN Type: %i (%s)", vt, vlan_type_codes[vt] or "unk"))
-
-end
-
-
-
-local function parse_ports (val)
-
- local ports=""
-
- for i=8,1,-1 do
- if ( val%2==1 ) then
- ports=ports..i.." "
- end
- val=math.floor(val/2)
- end
-
- return ports
-
-end
-
-
-
-local function dissect_vlan_port_conf (buffer, offset, subtree)
-
- subtree:add(buffer(offset+4, 2), string.format("VLAN: %u", buffer(offset+4, 2):uint()))
-
- if ( buffer(offset+2, 2):uint()>=3 ) then
- subtree:add(buffer(offset+6, 1), "Ports:", parse_ports(buffer(offset+6, 1):uint()))
- end
-
-end
-
-
-
-local function dissect_vlan_8021q_conf (buffer, offset, subtree)
-
- subtree:add(buffer(offset+4, 2), string.format("VLAN: %u", buffer(offset+4, 2):uint()))
-
- if ( buffer(offset+2, 2):uint()>=4 ) then
- subtree:add(buffer(offset+6, 1), "Ports:", parse_ports(buffer(offset+6, 1):uint()))
- subtree:add(buffer(offset+7, 1), "Tagged Ports:", parse_ports(buffer(offset+7, 1):uint()))
- end
-
-end
-
-
-
-local function dissect_vlan_pvid (buffer, offset, subtree)
-
- subtree:add(buffer(offset+4, 1), string.format("Port: %i", buffer(offset+4, 1):uint()))
- subtree:add(buffer(offset+5, 2), string.format("VLAN: %u", buffer(offset+5, 2):uint()))
-
-end
-
-
-
-local function dissect_mirror (buffer, offset, subtree)
-
- local op=buffer(offset+4, 1):uint()
-
- if ( op==0 ) then
- subtree:add(buffer(offset+4, 1), "Disabled")
- else
- subtree:add(buffer(offset+4, 1), "Output Port:", op)
- subtree:add(buffer(offset+6, 1), "Ports:", parse_ports(buffer(offset+6, 1):uint()))
- end
-
-end
-
-
-
-local function dissect_igmp_enablevlan (buffer, offset, subtree)
-
- subtree:add(buffer(offset+4, 2), string.format("Enable: %u", buffer(offset+4, 2):uint()))
- subtree:add(buffer(offset+6, 2), string.format("VLAN: %u", buffer(offset+6, 2):uint()))
-
-end
-
-
-
-
-local attributes={
- [0x0001]={name="Product", dissect="string"},
- [0x0003]={name="Name", dissect="string"},
- [0x0004]={name="MAC", dissect="ether"},
- [0x0006]={name="IP", dissect="ipv4"},
- [0x0007]={name="Mask", dissect="ipv4"},
- [0x0008]={name="Gateway", dissect="ipv4"},
- [0x0009]={name="New Password", dissect="string"},
- [0x000A]={name="Password", dissect="string"},
- [0x000B]={name="DHCP", dissect="uint"},
- [0x000D]={name="Firmware Version", dissect="string"},
- [0x0010]={name="Firmware Upgrade", dissect="uint"},
- [0x0013]={name="Restart", dissect="uint"},
- [0x0400]={name="Defaults", dissect="uint"},
- [0x0C00]={name="Port Status", dissect=dissect_port_status},
- [0x1000]={name="Port Statistics", dissect=dissect_port_statistics},
- [0x1400]={name="Reset Ports Statistics", dissect="uint"},
- [0x1800]={name="Cabletest Do", dissect=nil},
- [0x1C00]={name="Cabletest Result", dissect=nil},
- [0x2000]={name="VLAN Type", dissect=dissect_vlan_type},
- [0x2400]={name="VLAN Port Conf", dissect=dissect_vlan_port_conf},
- [0x2800]={name="VLAN 802.1Q Conf", dissect=dissect_vlan_8021q_conf},
- [0x2C00]={name="Destroy VLAN", dissect="uint"},
- [0x3000]={name="VLAN PVID", dissect=dissect_vlan_pvid},
- [0x3400]={name="QoS Type", dissect=dissect_qos_type},
- [0x3800]={name="QoS Config", dissect=dissect_qos_config},
- [0x4C00]={name="Input Bitrate", dissect=dissect_bitrate},
- [0x5000]={name="Output Bitrate", dissect=dissect_bitrate},
- [0x5400]={name="Broadcast Filtering State", dissect="uint"},
- [0x5800]={name="Broadcast Filtering Bitrate", dissect=dissect_bitrate},
- [0x5C00]={name="Mirror", dissect=dissect_mirror},
- [0x6000]={name="Ports Count", dissect="uint"},
- [0x6800]={name="IGMP Enable & VLAN", dissect=dissect_igmp_enablevlan},
- [0x6C00]={name="Block Unknown IGMP Addresses", dissect="uint"},
- [0x7000]={name="Validate IGMPv3 Headers", dissect="uint"},
- [0xFFFF]={name="End", dissect=nil}
-}
-
-
-
-
-
-
-local function dissect_header (buffer, subtree)
-
- subtree:add(f_version, buffer(0, 1))
-
- subtree:add(f_code, buffer(1, 1)):append_text(" ("..(op_codes[buffer(1, 1):uint()] or "unknown")..")")
-
- local errcode=buffer(2, 1):uint()
- subtree:add(f_error, buffer(2, 1)):append_text(" ("..(error_codes[errcode] or "unknown")..")")
-
- -- add the erroneous attribute only if an error occurred
- if ( errcode~=0 ) then
- local atf=attributes[buffer(4, 2):uint()]
- subtree:add(f_errattr, buffer(4, 2)):append_text(" ("..(atf and atf.name or "unk")..")")
- end
-
- subtree:add(f_clientmac, buffer(8, 6))
-
- subtree:add(f_switchmac, buffer(14, 6))
-
- subtree:add(f_seqnum, buffer(20, 4))
-
-
-end
-
-
-
-local function dissect_attributes (buffer, subtree)
-
- local offset=32
-
- while ( offset<buffer:len() ) do
-
- if ( offset+4>buffer:len() ) then
- -- no room for an attribute header, it is an error
- subtree:add(buffer(offset), "Junk"):set_expert_flags(PI_MALFORMED, PI_ERROR)
- break
- end
-
- local code=buffer(offset, 2):uint()
- local len=buffer(offset+2, 2):uint()
- local atf=attributes[code]
-
- local attr=subtree:add(buffer(offset, math.min(4+len, buffer:len()-offset)), string.format("Attribute: 0x%04X (%s)", code, atf and atf.name or "unk"))
- attr:add(buffer(offset, 2), string.format("Code: 0x%04X", code))
- attr:add(buffer(offset+2, 2), string.format("Length: %u", len))
-
- if ( offset+4+len>buffer:len() ) then
- -- attribute length is bigger than remaining packet size, it is an error
- attr:append_text(" [malformed]")
- attr:set_expert_flags(PI_MALFORMED, PI_ERROR)
- break
- end
-
-
- if ( len<=0 ) then
- -- no data, display nothing
- elseif ( atf==nil or atf.dissect==nil ) then
- -- unknown attribute, display raw bytes
- attr:add(buffer(offset+4, len), "Data:", tostring(buffer(offset+4, len):bytes()))
- elseif ( type(atf.dissect)=="function" ) then
- -- custom sub-dissector for complex type
- atf.dissect(buffer, offset, attr)
- else
- -- simple type, directly show it
- local func=assert(loadstring("return function(buffer, offset, len) return tostring(buffer(offset+4, len):"..atf.dissect.."()) end"))() -- ugly, isn't it ?
- attr:add(buffer(offset+4, len), atf.name..":", func(buffer, offset, len))
- end
-
- offset=offset+4+len
-
- end
-
-end
-
-
-
-function p_nsdp.dissector (buffer, pinfo, tree)
-
- pinfo.cols.protocol=p_nsdp.name
- local subtree=tree:add(p_nsdp, buffer())
-
- -- stop if the packet is too small to be valid
- if ( buffer:len()<32 ) then return end
-
- dissect_header(buffer, subtree)
-
- -- stop if it is just a header
- if ( buffer:len()==32 ) then return end
-
- local attr_list=subtree:add(buffer(32), "Attributes list")
- dissect_attributes(buffer, attr_list)
-
-end
-
-
-
-function p_nsdp.init ()
-end
-
-
-
-local udp_dissector_table=DissectorTable.get("udp.port")
-dissector=udp_dissector_table:get_dissector(63322)
-udp_dissector_table:add(63322, p_nsdp)
-
-
projects / ngadmin / blobdiff