def m2i(self, pkt, m):
res = []
while len(m) >= 4:
t = struct.unpack("!H", m[:2])[0]
tmp_len = struct.unpack("!H", m[2:4])[0]
cls = _tls_ext_cls.get(t, TLS_Ext_Unknown)
if cls is TLS_Ext_KeyShare:
# TLS_Ext_KeyShare can be :
# - TLS_Ext_KeyShare_CH if the message is a ClientHello
# - TLS_Ext_KeyShare_SH if the message is a ServerHello
# and all parameters are accepted by the serveur
# - TLS_Ext_KeyShare_HRR if message is a ServerHello and
# the client has not provided a sufficient "key_share"
# extension
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_keyshare_cls # noqa: E501
cls = _tls_ext_keyshare_cls.get(pkt.msgtype, TLS_Ext_Unknown)
elif cls is TLS_Ext_PreSharedKey:
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_presharedkey_cls # noqa: E501
cls = _tls_ext_presharedkey_cls.get(pkt.msgtype, TLS_Ext_Unknown) # noqa: E501
elif cls is TLS_Ext_SupportedVersions:
cls = _tls_ext_supported_version_cls.get(pkt.msgtype, TLS_Ext_Unknown) # noqa: E501
elif cls is TLS_Ext_EarlyDataIndication:
cls = _tls_ext_early_data_cls.get(pkt.msgtype, TLS_Ext_Unknown)
res.append(cls(m[:tmp_len + 4], tls_session=pkt.tls_session))
m = m[tmp_len + 4:]
return res
def m2i(self, pkt, m):
res = []
while m:
t = struct.unpack("!H", m[:2])[0]
l = struct.unpack("!H", m[2:4])[0]
cls = _tls_ext_cls.get(t, TLS_Ext_Unknown)
if cls is TLS_Ext_KeyShare:
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_keyshare_cls
cls = _tls_ext_keyshare_cls.get(pkt.msgtype, TLS_Ext_Unknown)
elif cls is TLS_Ext_PreSharedKey:
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_presharedkey_cls
cls = _tls_ext_presharedkey_cls.get(pkt.msgtype, TLS_Ext_Unknown)
res.append(cls(m[:l + 4], tls_session=pkt.tls_session))
m = m[l + 4:]
return res
def m2i(self, pkt, m):
res = []
while m:
t = struct.unpack("!H", m[:2])[0]
l = struct.unpack("!H", m[2:4])[0]
cls = _tls_ext_cls.get(t, TLS_Ext_Unknown)
if cls is TLS_Ext_KeyShare:
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_keyshare_cls
cls = _tls_ext_keyshare_cls.get(pkt.msgtype, TLS_Ext_Unknown)
elif cls is TLS_Ext_PreSharedKey:
from scapy.layers.tls.keyexchange_tls13 import _tls_ext_presharedkey_cls
cls = _tls_ext_presharedkey_cls.get(pkt.msgtype, TLS_Ext_Unknown)
res.append(cls(m[:l+4], tls_session=pkt.tls_session))
m = m[l+4:]
return res
