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client_request.py
196 lines (141 loc) · 5.71 KB
/
client_request.py
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__author__ = 'JordSti'
from PyQt4 import QtGui, QtCore
import client
import network
import time
import file_constructor
class network_request(QtCore.QThread):
def __init__(self, endpoint, received=None):
QtCore.QThread.__init__(self)
self.endpoint = endpoint
self.received = received
self.sent_packet = None
self.receipt_packet = None
self.sended_packets = []
self.received_packets = []
self.client = None
self.completed = False
def __sent_packet(self, packet):
self.sended_packets.append(packet)
if self.sent_packet is not None:
self.sent_packet(self, packet)
def __receipt_packet(self, packet):
self.received_packets.append(packet)
if self.receipt_packet is not None:
self.receipt_packet(self, packet)
def run(self):
pass
def recv(self):
self.__verify_client()
data = self.client.receive()
recv_packet = network.packet(data)
self.__receipt_packet(recv_packet)
return recv_packet
def send(self, packet):
self.__verify_client()
self.client.send(packet.to_chunk())
self.__sent_packet(packet)
def __verify_client(self):
if self.client is None:
self.client = client.client(self.endpoint.hostname, self.endpoint.port)
else:
self.client.set_endpoint(self.endpoint)
def terminate(self):
self.completed = True
self.__received()
def __received(self):
if self.received is not None:
self.received(self)
class index_request(network_request):
def __init__(self, endpoint, received=None):
network_request.__init__(self, endpoint, received)
self.index_ctor = None
def run(self):
#forging packet
p = network.packet()
p.header = network.packet_header()
p.header.packet_type = network.packet_header.Request
p.header.fields['request'] = 'file_index'
self.send(p)
recv_packet = self.recv()
if recv_packet.header.packet_type == network.packet_header.FileInformation:
#index info
bsize = []
length = int(recv_packet.header.fields['length'])
for bs in recv_packet.header.fields['blocks'].split(','):
bsize.append(int(bs))
name = recv_packet.header.fields['name']
fhash = recv_packet.header.fields['hash']
self.index_ctor = file_constructor.file_constructor(name, fhash, length, bsize)
self.terminate()
class index_retrieve(network_request):
def __init__(self, endpoint, index_ctor, received=None):
network_request.__init__(self, endpoint, received)
self.index_ctor = index_ctor
def run(self):
for m in self.index_ctor.missing_blocks():
p = network.packet()
p.header = network.packet_header()
p.header.packet_type = network.packet_header.Request
p.header.fields['request'] = 'index_block'
p.header.fields['block_id'] = str(m)
self.send(p)
recv = self.recv()
if recv.header.packet_type == network.packet_header.FileBlock:
b_id = int(recv.header.fields['block_id'])
self.index_ctor.put_data(b_id, recv.bytes)
if self.index_ctor.is_completed():
self.terminate()
else:
print self.index_ctor.missing_blocks()
class file_request(network_request):
def __init__(self, endpoint, filepath, received=None):
network_request.__init__(self, endpoint, received)
self.file_ctor = None
self.filepath = filepath
def run(self):
#forging packet
p = network.packet()
p.header = network.packet_header()
p.header.packet_type = network.packet_header.Request
p.header.fields['request'] = 'ask_file_info'
p.header.fields['file'] = self.filepath
self.send(p)
recv_packet = self.recv()
if recv_packet.header.packet_type == network.packet_header.FileInformation:
#index info
bsize = []
length = int(recv_packet.header.fields['length'])
for bs in recv_packet.header.fields['blocks'].split(','):
bsize.append(int(bs))
name = recv_packet.header.fields['name']
fhash = recv_packet.header.fields['hash']
self.file_ctor = file_constructor.file_constructor(name, fhash, length, bsize)
self.terminate()
class file_retrieve(network_request):
def __init__(self, endpoint, file_ctor, local_path=None, received=None):
network_request.__init__(self, endpoint, received)
self.file_ctor = file_ctor
self.local_path = local_path
def run(self):
for m in self.file_ctor.missing_blocks():
p = network.packet()
p.header = network.packet_header()
p.header.packet_type = network.packet_header.Request
p.header.fields['request'] = 'file_block'
p.header.fields["block_id"] = str(m)
p.header.fields["hash"] = self.file_ctor.filehash
self.send(p)
recv = self.recv()
if recv.header.packet_type == network.packet_header.FileBlock:
b_id = int(recv.header.fields['block_id'])
parent_hash = recv.header.fields['parent_hash']
if self.file_ctor.filehash == parent_hash:
self.file_ctor.put_data(b_id, recv.bytes)
else:
print "Bad Hash !"
if self.file_ctor.is_completed():
#todo file hash check
self.terminate()
else:
print self.file_ctor.missing_blocks()