# -*- coding: utf-8 -*-
"""
Copyright (c) 2017 beyond-blockchain.org.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
import msgpack
import struct
[docs]def to_4byte(val, offset=0):
return (val+offset).to_bytes(4, 'big') # network byte order
[docs]def to_2byte(val, offset=0):
return (val+offset).to_bytes(2, 'big') # network byte order
[docs]def make_message(payload_type, msg, payload_version=0):
if payload_type == PayloadType.Type_msgpack:
dat = msgpack.packb(msg)
elif payload_type == PayloadType.Type_binary:
dat = make_TLV_formatted_message(msg)
else:
return None
msg = bytearray()
msg.extend(struct.pack(">HHI", payload_type, payload_version, len(dat)))
msg.extend(dat)
return msg
[docs]def deserialize_data(payload_type, dat):
if payload_type == PayloadType.Type_msgpack:
return msgpack.unpackb(dat)
elif payload_type == PayloadType.Type_binary:
return make_dictionary_from_TLV_format(dat)
return None
[docs]class PayloadType:
Type_binary = 0
Type_msgpack = 1
[docs]class Message:
HEADER_LEN = 8 # Type, length of data_body, data_body
def __init__(self):
self.pending_buf = bytearray()
self.is_new_chunk = True
self.msg_body = None
self.payload_type = 0
self.format_version = 0
self.msg_len = 0
[docs] def recv(self, dat):
self.pending_buf.extend(dat)
[docs] def parse(self):
#print(" > pending_buf=%d,%d"%(len(self.pending_buf), Message.HEADER_LEN))
if self.is_new_chunk:
if len(self.pending_buf) < Message.HEADER_LEN:
return None
self.payload_type, self.format_version, self.msg_len = struct.unpack(">HHI",
self.pending_buf[:Message.HEADER_LEN])
self.is_new_chunk = False
self.msg_body = None
#print(" >> msg_len=%d"%(self.msg_len))
if self.msg_len == 0:
self.is_new_chunk = True
self.msg_body = []
self.pending_buf = self.pending_buf[Message.HEADER_LEN:]
#print(" --self.msg_len == Message.HEADER_LEN -->true")
return None
if self.msg_len > 0 and len(self.pending_buf) >= self.msg_len+Message.HEADER_LEN:
self.is_new_chunk = True
self.msg_body = self.pending_buf[Message.HEADER_LEN:(self.msg_len+Message.HEADER_LEN)]
self.pending_buf = self.pending_buf[(self.msg_len+Message.HEADER_LEN):]
#print(" --self.msg_len > Message.HEADER_LEN -->true")
return deserialize_data(self.payload_type, self.msg_body)
#print(" --->>> false")
return None
[docs]class KeyType:
status = to_4byte(0) # status code in bbc_error
reason = to_4byte(1) # text
result = to_4byte(2) # True/False
command = to_4byte(8) # command type
message = to_4byte(9)
domain_ping = to_4byte(10) # send directly to bbc_network without node_id in the domain
p2p_msg_type = to_4byte(11) # message type in p2p network
query_id = to_4byte(12) # query_id from bbc_app
nonce = to_4byte(13)
count = to_4byte(14)
stats = to_4byte(15)
ledger_subsys_manip = to_4byte(0, 0x20) # enable/disable ledger_subsystem
ledger_subsys_register = to_4byte(1, 0x20)
ledger_subsys_verify = to_4byte(2, 0x20)
merkle_tree = to_4byte(3, 0x20)
network_module = to_4byte(0, 0x30)
storage_type = to_4byte(1, 0x30)
storage_path = to_4byte(2, 0x30)
peer_info = to_4byte(3, 0x30)
peer_list = to_4byte(4, 0x30)
domain_list = to_4byte(7, 0x30)
bbc_configuration = to_4byte(8, 0x30)
ipv4_address = to_4byte(9, 0x30)
ipv6_address = to_4byte(10, 0x30)
port_number = to_4byte(11, 0x30)
external_ip4addr = to_4byte(12, 0x30)
external_ip6addr = to_4byte(13, 0x30)
resource_id = to_4byte(0, 0x40)
resource_type = to_4byte(1, 0x40)
resource = to_4byte(2, 0x40)
sql = to_4byte(3, 0x40)
user_id = to_4byte(0, 0x50)
source_user_id = to_4byte(1, 0x50)
destination_user_id = to_4byte(2, 0x50)
destination_user_ids = to_4byte(3, 0x50)
node_id = to_4byte(4, 0x50)
source_node_id = to_4byte(5, 0x50)
destination_node_id = to_4byte(6, 0x50)
domain_id = to_4byte(0, 0x60)
asset_group_id = to_4byte(1, 0x60)
transaction_id = to_4byte(2, 0x60)
asset_id = to_4byte(3, 0x60)
transaction_data = to_4byte(0, 0x70)
transactions = to_4byte(1, 0x70)
ref_index = to_4byte(2, 0x70)
asset_file = to_4byte(3, 0x70)
all_asset_files = to_4byte(4, 0x70)
signature = to_4byte(5, 0x70)
cross_refs = to_4byte(6, 0x70)