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| iscp_protocol = Proto("ISCP", "ISCP protocol") | |
| iscp_protocol.fields.header = ProtoField.bytes("iscp.header", "header") | |
| iscp_protocol.fields.magic = ProtoField.string("iscp.magic", "magic") | |
| iscp_protocol.fields.hsize = ProtoField.uint32("iscp.hsize", "hsize") | |
| iscp_protocol.fields.dsize = ProtoField.uint32("iscp.dsize", "dsize") | |
| iscp_protocol.fields.version = ProtoField.uint8("iscp.version", "version") | |
| iscp_protocol.fields.payload = ProtoField.bytes("iscp.payload", "payload") | |
| iscp_protocol.fields.start = ProtoField.char("iscp.start", "start") | |
| iscp_protocol.fields.dest = ProtoField.char("iscp.dest", "dest") | |
| iscp_protocol.fields.cmd = ProtoField.string("iscp.cmd", "cmd") | |
| iscp_protocol.fields.param = ProtoField.string("iscp.param", "param") | |
| iscp_protocol.fields.end_ = ProtoField.string("iscp.end", "end") | |
| iscp_protocol.fields.garbage = ProtoField.bytes("iscp.garbage", "garbage") | |
| iscp_protocol.fields = { magic, hsize, dsize, version, start, dest, cmd, param, end_, garbage } | |
| function iscp_protocol.dissector(buffer, pinfo, tree) | |
| length = buffer:len() | |
| if length == 0 then return end | |
| pinfo.cols.protocol = iscp_protocol.name | |
| local subtree = tree:add(iscp_protocol, buffer(), "ISCP Protocol Data") | |
| local header = buffer(0, 16) | |
| local header_tree = subtree:add(iscp_protocol.fields.header, header, "Header") | |
| header_tree:add(iscp_protocol.fields.magic, header(0, 4)) | |
| header_tree:add(iscp_protocol.fields.hsize, header(4, 4)) | |
| header_tree:add(iscp_protocol.fields.dsize, header(8, 4)) | |
| header_tree:add(iscp_protocol.fields.version, header(12, 1)) | |
| local payload = buffer(16, header(8, 4):uint()) | |
| local payload_tree = subtree:add(iscp_protocol.fields.payload, payload, "Payload") | |
| payload_tree:add(iscp_protocol.fields.start, payload(0, 1)) | |
| payload_tree:add(iscp_protocol.fields.dest, payload(1, 1)) | |
| payload_tree:add(iscp_protocol.fields.cmd, payload(2, 3)) | |
| paramend = payload(5) | |
| local stop = string.find(paramend:string(), "[\r\n\25\26]+$") - 1 | |
| payload_tree:add(iscp_protocol.fields.param, paramend(0, stop)) | |
| payload_tree:add(iscp_protocol.fields.end_, paramend(stop)) | |
| local expectedsize = 16 + header(8, 4):uint() | |
| if buffer:len() > expectedsize then | |
| subtree:add(iscp_protocol.fields.garbage, buffer(expectedsize), "[Garbage]") | |
| end | |
| end | |
| DissectorTable.get("tcp.port"):add(60128, iscp_protocol) | |
| DissectorTable.get("udp.port"):add(60128, iscp_protocol) |
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