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Diffstat (limited to 'python/examples/kaitai/tcp_segment.py')
| -rw-r--r-- | python/examples/kaitai/tcp_segment.py | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/python/examples/kaitai/tcp_segment.py b/python/examples/kaitai/tcp_segment.py new file mode 100644 index 00000000..e329d84c --- /dev/null +++ b/python/examples/kaitai/tcp_segment.py @@ -0,0 +1,56 @@ +# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild + +from pkg_resources import parse_version +from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO +import collections + + +if parse_version(ks_version) < parse_version('0.7'): + raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) + +class TcpSegment(KaitaiStruct): + """TCP is one of the core Internet protocols on transport layer (AKA + OSI layer 4), providing stateful connections with error checking, + guarantees of delivery, order of segments and avoidance of duplicate + delivery. + """ + SEQ_FIELDS = ["src_port", "dst_port", "seq_num", "ack_num", "b12", "b13", "window_size", "checksum", "urgent_pointer", "body"] + def __init__(self, _io, _parent=None, _root=None): + self._io = _io + self._parent = _parent + self._root = _root if _root else self + self._debug = collections.defaultdict(dict) + + def _read(self): + self._debug['src_port']['start'] = self._io.pos() + self.src_port = self._io.read_u2be() + self._debug['src_port']['end'] = self._io.pos() + self._debug['dst_port']['start'] = self._io.pos() + self.dst_port = self._io.read_u2be() + self._debug['dst_port']['end'] = self._io.pos() + self._debug['seq_num']['start'] = self._io.pos() + self.seq_num = self._io.read_u4be() + self._debug['seq_num']['end'] = self._io.pos() + self._debug['ack_num']['start'] = self._io.pos() + self.ack_num = self._io.read_u4be() + self._debug['ack_num']['end'] = self._io.pos() + self._debug['b12']['start'] = self._io.pos() + self.b12 = self._io.read_u1() + self._debug['b12']['end'] = self._io.pos() + self._debug['b13']['start'] = self._io.pos() + self.b13 = self._io.read_u1() + self._debug['b13']['end'] = self._io.pos() + self._debug['window_size']['start'] = self._io.pos() + self.window_size = self._io.read_u2be() + self._debug['window_size']['end'] = self._io.pos() + self._debug['checksum']['start'] = self._io.pos() + self.checksum = self._io.read_u2be() + self._debug['checksum']['end'] = self._io.pos() + self._debug['urgent_pointer']['start'] = self._io.pos() + self.urgent_pointer = self._io.read_u2be() + self._debug['urgent_pointer']['end'] = self._io.pos() + self._debug['body']['start'] = self._io.pos() + self.body = self._io.read_bytes_full() + self._debug['body']['end'] = self._io.pos() + + |