layer4 Package

sccp Module

Cisco Skinny Client Control Protocol.

class pypacker.layer4.sccp.ActivateCallPlane(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('line_instance', 'I', 0),)
line_instance = 0
class pypacker.layer4.sccp.CallInfo(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('calling_party_name', '40s', ''), ('calling_party', '24s', ''), ('called_party_name', '40s', ''), ('called_party', '24s', ''), ('line_instance', 'I', 0), ('call_id', 'I', 0), ('call_type', 'I', 0), ('orig_called_party_name', '40s', ''), ('orig_called_party', '24s', ''))
call_id = 0
call_type = 0
called_party = ''
called_party_name = ''
calling_party = ''
calling_party_name = ''
line_instance = 0
orig_called_party = ''
orig_called_party_name = ''
class pypacker.layer4.sccp.CallState(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('call_state', 'I', 12), ('line_instance', 'I', 1), ('call_id', 'I', 0))
call_id = 0
call_state = 12
line_instance = 1
class pypacker.layer4.sccp.ClearPromptStatus(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('line_instance', 'I', 1), ('call_id', 'I', 0))
call_id = 0
line_instance = 1
class pypacker.layer4.sccp.CloseReceiveChannel(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('conference_id', 'I', 0), ('passthruparty_id', 'I', 0))
conference_id = 0
passthruparty_id = 0
class pypacker.layer4.sccp.DisplayPromptStatus(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('msg_timeout', 'I', 0), ('display_msg', '32s', ''), ('line_instance', 'I', 1), ('call_id', 'I', 0))
call_id = 0
display_msg = ''
line_instance = 1
msg_timeout = 0
class pypacker.layer4.sccp.DisplayText(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('display_msg', '36s', ''),)
display_msg = ''
class pypacker.layer4.sccp.KeypadButton(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('button', 'I', 0),)
button = 0
class pypacker.layer4.sccp.OpenReceiveChannel(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('conference_id', 'I', 0), ('passthruparty_id', 'I', 0), ('ms_packet', 'I', 0), ('payload_capability', 'I', 4), ('echo_cancel_type', 'I', 4), ('g723_bitrate', 'I', 0))
conference_id = 0
echo_cancel_type = 4
g723_bitrate = 0
ms_packet = 0
passthruparty_id = 0
payload_capability = 4
class pypacker.layer4.sccp.OpenReceiveChannelAck(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('channel_status', 'I', 0), ('ip', '4s', ''), ('port', 'I', 0), ('passthruparty_id', 'I', 0))
channel_status = 0
ip = ''
passthruparty_id = 0
port = 0
class pypacker.layer4.sccp.SCCP(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('len', 'I', 0), ('rsvd', 'I', 0), ('msgid', 'I', 0))
len = 0
msgid = 0
rsvd = 0
class pypacker.layer4.sccp.SelectStartKeys(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('line_id', 'I', 1), ('call_id', 'I', 0), ('softkey_set', 'I', 8), ('softkey_map', 'I', 4294967295))
call_id = 0
line_id = 1
softkey_map = 4294967295
softkey_set = 8
class pypacker.layer4.sccp.SetLamp(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('stimulus', 'I', 9), ('stimulus_instance', 'I', 1), ('lamp_mode', 'I', 1))
lamp_mode = 1
stimulus = 9
stimulus_instance = 1
class pypacker.layer4.sccp.SetSpeakerMode(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('speaker', 'I', 2),)
speaker = 2
class pypacker.layer4.sccp.StartMediaTransmission(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('conference_id', 'I', 0), ('passthruparty_id', 'I', 0), ('remote_ip', '4s', ''), ('remote_port', 'I', 0), ('ms_packet', 'I', 0), ('payload_capability', 'I', 4), ('precedence', 'I', 0), ('silence_suppression', 'I', 0), ('max_frames_per_pkt', 'I', 1), ('g723_bitrate', 'I', 0))
conference_id = 0
g723_bitrate = 0
max_frames_per_pkt = 1
ms_packet = 0
passthruparty_id = 0
payload_capability = 4
precedence = 0
remote_ip = ''
remote_port = 0
silence_suppression = 0
class pypacker.layer4.sccp.StartTone(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('tone', 'I', 36),)
tone = 36
class pypacker.layer4.sccp.StopMediaTransmission(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('conference_id', 'I', 0), ('passthruparty_id', 'I', 0))
conference_id = 0
passthruparty_id = 0

sctp Module

Stream Control Transmission Protocol. http://tools.ietf.org/html/rfc3286 http://tools.ietf.org/html/rfc2960

class pypacker.layer4.sctp.Chunk(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('type', 'B', 1), ('flags', 'B', 0), ('len', 'H', 0))
flags = 0
len = 0
type = 1
class pypacker.layer4.sctp.SCTP(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('sport', 'H', 0), ('dport', 'H', 0), ('vtag', 'I', 0), ('_sum', 'I', 0), ('chunks', None, <class 'pypacker.triggerlist.TriggerList'>))
bin()
dport = 0
padding
sport = 0
sum
vtag = 0

ssl Module

Secure Sockets Layer / Transport Layer Security.

class pypacker.layer4.ssl.SSL(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('records', None, <class 'pypacker.triggerlist.TriggerList'>),)
class pypacker.layer4.ssl.SSL2(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('len', 'H', 0), ('msg', 's', ''), ('pad', 's', ''))
len = 0
msg = ''
pad = ''
class pypacker.layer4.ssl.TLSHello(*args, **kwargs)

Bases: pypacker.pypacker.Packet

Client and server hello.

__hdr__ = (('type', 'B', 0), ('len', '3s', 0), ('version', 'H', 769), ('random', '32s', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'), ('sid_len', 'B', 32))
len = 0
random = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
sid_len = 32
type = 0
version = 769
class pypacker.layer4.ssl.TLSRecord(*args, **kwargs)

Bases: pypacker.pypacker.Packet

SSLv3 or TLSv1+ packet.

In addition to the fields specified in the header, there are compressed and decrypted fields, indicating whether, in the language of the spec, this is a TLSPlaintext, TLSCompressed, or TLSCiphertext. The application will have to figure out when it’s appropriate to change these values.

__hdr__ = (('type', 'B', 0), ('version', 'H', 0), ('len', 'H', 0))
len = 0
type = 0
version = 0
pypacker.layer4.ssl.parse_variable_array(buf, lenbytes)

Parse an array described using the “Type name<x..y>” syntax from the spec

Read a length at the start of buf, and returns that many bytes after, in a tuple with the TOTAL bytes consumed (including the size). This does not check that the array is the right length for any given datatype.

tcp Module

Transmission Control Protocol (TCP)

RFC 675 – Specification of Internet Transmission Control Program, December 1974 Version RFC 793 – TCP v4 RFC 1122 – includes some error corrections for TCP RFC 1323 – TCP-Extensions RFC 1379 – Extending TCP for Transactions—Concepts RFC 1948 – Defending Against Sequence Number Attacks RFC 2018 – TCP Selective Acknowledgment Options RFC 4614 – A Roadmap for TCP Specification Documents RFC 5681 – TCP Congestion Control RFC 6298 – Computing TCP’s Retransmission Timer RFC 6824 - TCP Extensions for Multipath Operation with Multiple Addresses

class pypacker.layer4.tcp.TCP(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('sport', 'H', 57005), ('dport', 'H', 0), ('seq', 'I', 3735928559), ('ack', 'I', 0), ('off_x2', 'B', 80), ('flags', 'B', 2), ('win', 'H', 65535), ('_sum', 'H', 0), ('urp', 'H', 0), ('opts', None, <class 'pypacker.layer4.tcp.TCPTriggerList'>))
ack = 0
bin()

Custom bin() to handle checksum calculation.

dport = 0
flags = 2
off
off_x2 = 80
seq = 3735928559
sport = 57005
sum
urp = 0
win = 65535
class pypacker.layer4.tcp.TCPOptMulti(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('type', '1B', 0), ('len', '1B', 0))
len = 0
type = 0
class pypacker.layer4.tcp.TCPOptSingle(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('type', '1B', 0),)
type = 0
class pypacker.layer4.tcp.TCPTriggerList(lst=[], clz=None, packet=None)

Bases: pypacker.triggerlist.TriggerList

udp Module

User Datagram Protocol (UDP)

RFC 768 – User Datagram Protocol RFC 2460 – Internet Protocol, Version 6 (IPv6) Specification RFC 2675 – IPv6 Jumbograms RFC 4113 – Management Information Base for the UDP RFC 5405 – Unicast UDP Usage Guidelines for Application Designers

class pypacker.layer4.udp.UDP(*args, **kwargs)

Bases: pypacker.pypacker.Packet

__hdr__ = (('sport', 'H', 57005), ('dport', 'H', 0), ('_ulen', 'H', 8), ('_sum', 'H', 0))
bin()
dport = 0
sport = 57005
sum
ulen

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