def load_content(self, path):
with open(path, 'rb') as file:
contents = bdecode(file)
self.torrent_file = contents
# getting metainfo of torrent file in separate variables
"""
Please refer to https://en.wikipedia.org/wiki/Torrent_file#File_structure
for understanding the structure of Torrent files containing metainfo
"""
# creating hash info for handshaking purpose
raw_info_hash = bencode(self.torrent_file['info'])
self.info_hash = hashlib.sha1(raw_info_hash).digest()
self.peer_id = self.generate_peer_id()
# creating directory structure and store file info in the dictionary
self.announce_list = self.get_trackers()
self.init_files()
# creating number of pieces
self.piece_length = self.torrent_file['info']['piece length']
self.pieces = self.torrent_file['info']['pieces']
self.number_of_pieces = math.ceil(self.total_length /
self.piece_length)
# checking for the lengths.. if equal to zero, it will show an assertion error
assert (self.total_length > 0)
assert (len(self.file_names) > 0)
# return all the values
return self
def sendgetpeers(info, nodes, msg):
print("start getpeer-----")
clientSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
getPeersMessage(clientSocket, info)
for n in nodes:
addr = (n.ip, n.port)
clientSocket.sendto(bencode(msg), addr)
def dealFideNodes(msg,s,adress):
print("fn")
tid=msg['t']
msg={"t":tid, "y":"r", "r":{"id":NodeId,"nodes":""}}
print(msg)
s.sendto(bencode(msg),(adress))
return
def request_metadata(the_socket, ut_metadata, piece):
"""bep_0009"""
msg = chr(BT_MSG_ID).encode() + chr(ut_metadata).encode() + bencode(
{
"msg_type": 0,
"piece": piece
})
send_message(the_socket, msg)
def make_magnet_from_file(file) :
file_torrent=open(file,"rb")
metadata = bcoding.bdecode(file_torrent.read())
subj = metadata[b'info']
hashcontents = bcoding.bencode(subj)
digest = hashlib.sha1(hashcontents).digest()
b32hash = base64.b32encode(digest).decode()
return 'magnet:?'+ 'xt=urn:btih:' + b32hash+ '&dn=' + metadata[b'info'][b'name'].decode()+ '&tr=' + metadata[b'announce'].decode()+ '&xl=' + str(metadata[b'info'][b'length'])
'''convert torrent into magnet file for further sharing, not currently used, but for possible future development'''
def __init__(self, torrent_file_path):
self.peers = []
self.pieces = deque([])
self.peer_id = hashlib.sha1(str(time.time()).encode('utf-8')).digest()
self.torrent_dict = bcoding.bdecode(open(torrent_file_path, 'rb').read())
bencode_info = bcoding.bencode(self.torrent_dict['info'])
self.infoHash = hashlib.sha1(bencode_info).digest()
self.generate_peer_connections()
self.generate_pieces_objects()
self.num_pieces_so_far = 0
def dealGetPeer(msg,s,adress):
tid=msg['t']
infohash = msg["a"]["info_hash"]
infohash = proper_infohash(infohash)
print("getPeer: "+infohash)
token = infohash[:2]
msg={"t":tid, "y":"r", "r":{"id":NodeId,"nodes":"", "token":token}}
print(msg)
s.sendto(bencode(msg),(adress))
return
def initRoute(clientSocket):
for r in BOOTSTRAP_NODES:
msg = {
"t": "mycode",
"y": "q",
"q": "find_node",
"a": {
"id": random_id(),
"target": random_id()
}
}
clientSocket.sendto(bencode(msg), r)
def sendMSGUDP(q, s):
a = 0
while True:
if q.empty():
initRoute(s)
a = a + 1
qi = q.get()
msg = qi[0]
adress = qi[1]
#print(adress)
s.sendto(bencode(msg), adress)
def sendMSGUDP(q, s):
a = 0
while True:
if q.qsize() < 100:
#print("++++++++++++++initAgain++++++++++/n")
initRoute(s)
a = a + 1
qi = q.get()
msg = qi[0]
adress = qi[1]
#print(adress)
s.sendto(bencode(msg), adress)
def load_from_path(self, path):
with open(path, 'rb') as file:
contents = bdecode(file)
self.torrent_file = contents
self.piece_length = self.torrent_file['info']['piece length']
self.pieces = self.torrent_file['info']['pieces']
self.info_hash = hashlib.sha1(bencode(
self.torrent_file['info'])).digest()
self.peer_id = self.generate_peer_id()
self.announce_list = self.get_trakers()
self.init_files()
self.number_of_pieces = math.ceil(self.total_length /
self.piece_length)
return self
def sendgetpeers2(info, nodes, s):
msg = {
"t": random_id()[:6],
"y": "q",
"q": "get_peers",
"a": {
"id": random_id(),
"info_hash": info
}
}
for node in nodes:
adress = (node[1], node[2])
kt.dealNode(KNode(node[0], node[1], node[2]))
s.sendto(bencode(msg), adress)
def DO_GET(self, s):
client_info = decode_request(s.path)
if not client_info:
s.send_error(403)
return
info_hash = client_info["info_hash"][0]
ip = s.client_address[0]
port = client_info["port"][0]
peer_id = client_info["peer_id"][0]
response = {}
response["peers"] = s.server.torrent[info_hash]
s.send_response(200)
s.end_headers()
s.wfile.write(bencode(response))
def get_torrent_data(meta_info):
announce = meta_info['announce']
announce_list = meta_info['announce-list']
try:
comment = meta_info['comment']
except:
comment = None
created_by = meta_info['created by']
creation_date = meta_info['creation date']
files = []
length = 0
root = meta_info['info']['name']
if 'files' in meta_info['info']:
if not os.path.exists(root):
os.mkdir(root, 0o0766)
for file in meta_info['info']['files']:
path = os.path.join(root, *file["path"])
files.append({"path": path, "length": file["length"]})
if not os.path.exists(os.path.dirname(path)):
os.makedirs(os.path.dirname(path))
files.append({"path": path, "length": file["length"]})
length += file["length"]
else:
files.append({
'path': meta_info['info']['name'],
'length': meta_info['info']['length']
})
length = meta_info['info']['length']
name = meta_info['info']['name']
piece_length = meta_info['info']['piece length']
info_hash = hashlib.sha1(bencode(meta_info['info'])).digest()
print(
"announce:{}\nannounce-list:{}\ncomment:{}\ncreated by:{}\ncreation date:{}\nlength:{}\nname:{}\npiece length:{}\ninfo-hash:{}\n"
.format(announce, announce_list, comment, created_by, creation_date,
length, name, piece_length, info_hash))
return {
'announce': announce,
'announce_list': announce_list,
'comment': comment,
'created_by': created_by,
'creation_date': creation_date,
'length': length,
'name': name,
'piece_length': piece_length,
'info_hash': info_hash,
'files': files
}
def _open_file(self, path_to_file):
#read torrent file as binary object
with open(self.path_to_file, 'rb') as meta_file:
self.decoded = bdecode(meta_file.read())
#check to see if it's a multi-file torrent
if 'files' in self.decoded['info']:
self.multi_file = True
'''
This stuff doesn't care whether or not it's a
multi-file torrent
'''
# extract the creation date
self.creation_date = self.decoded['creation date']
# extract the announce url
self.announce = urllib.parse.urlparse(self.decoded['announce'])
print(self.decoded['announce'])
# calculates info hash
self.info_hash = hashlib.sha1(bencode(self.decoded['info'])).digest()
# extract piece length
self.piece_length = self.decoded['info']['piece length']
# extract pieces (in bytes)
self.pieces = self.decoded['info']['pieces']
self.num_pieces = len(self.pieces) // 20
# extract name / dictionary as to where to store the files
self.name = self.decoded['info']['name']
if not self.multi_file:
# extract length
self.length = self.decoded['info']['length']
self.last_piece_len = self.length - self.piece_length * (
self.num_pieces - 1)
else:
self.files = []
self.length = 0
for f in self.decoded['info']['files']:
self.length += int(f['length'])
self.files.append({
'length': int(f['length']),
'path': f['path']
})
self.last_piece_len = self.length - self.piece_length * (
self.num_pieces - 1)
self.file_info()
def sendMSGUDP(q, s):
a = 0
while True:
if q.qsize() < 100:
#print("++++++++++++++initAgain++++++++++/n")
initRoute(s)
a = a + 1
qi = q.get()
msg = qi[0]
adress = qi[1]
#print(adress)
s = createSocekt(adress)
s.send(bencode(msg))
t = threading.Thread(target=getMessage22, args=(
s,
q,
))
t.start()
def open_from_file(self, movie):
with open(a1[1], 'r+b') as file2:
contents2 = bdecode(file2)
self.torrent_file2 = contents2
self.piece_length = self.torrent_file2['info']['piece length']
self.pieces = self.torrent_file2['info']['pieces']
raw_info_hash = bencode(self.torrent_file2['info'])
self.info_hash = hashlib.sha1(raw_info_hash).digest()
self.peer_id = self.generate_peer_id()
self.announce_list = self.get_trakers()
self.init_files()
self.number_of_pieces = math.ceil(self.total_length /
self.piece_length)
logging.debug(self.announce_list)
logging.debug(self.file_names)
assert (self.total_length > 0)
assert (len(self.file_names) > 0)
return self
def parse_file(self):
with open(self.file, 'rb') as file:
content = bdecode(file)
info = content['info']
files = []
full_size = 0
for file in info['files']:
file_info = {'size': file['length'], 'name': file['path'][0]}
files.append(file_info)
full_size += file['length']
tracker_list = []
for tracker in content['announce-list']:
tracker_list.append(tracker[0])
info_hash = hashlib.sha1(bencode(info)).hexdigest()
announce_url = content['announce']
data = {
'info_hash': info_hash,
'files': files,
'announce': announce_url,
'full_size': self.make_size(full_size),
'tracker_list': tracker_list
}
return data
def get_info_hash(gto_dict):
return hashlib.sha1(bencode.bencode(gto_dict.get('info')))
def send_ext_handshake(the_socket):
msg = chr(BT_MSG_ID).encode() + chr(EXT_HANDSHAKE_ID).encode() + bencode(
{"m": {
"ut_metadata": 2
}})
send_message(the_socket, msg)
infohash = msg["a"]["info_hash"]
infohash = proper_infohash(infohash)
print("getPeer: "+infohash)
token = infohash[:2]
msg={"t":tid, "y":"r", "r":{"id":NodeId,"nodes":"", "token":token}}
print(msg)
s.sendto(bencode(msg),(adress))
return
def dealAnnouncePeer(msg,s,adress):
infohash = msg["a"]["info_hash"]
infohash = proper_infohash(infohash)
print("AnnouncePeer: "+infohash)
return
print("start")
NodeId=random_id()
kt=Ktable(NodeId)
kb=KBucket(0,2**160)
kt.append(kb)
print(NodeId)
print(str(int(binascii.hexlify(NodeId), 16)))
ServerName = 'router.utorrent.com'
ServerPort = 6881
clientSocket =socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
clientSocket.bind((HOST,PORT))
clientSocket.settimeout(5)
msg={"t":"mycode", "y":"q","q":"find_node", "a":{"id":NodeId,"target":NodeId}}
clientSocket.sendto(bencode(msg),(ServerName,ServerPort))
_thread.start_new_thread( getMessage, (clientSocket, ) )
def write(obj):
sys.stdout.buffer.write(bencode(obj))
sys.stdout.flush()
def dealFindNodesBack(nodes,s):
for node in nodes:
if kt.dealNode(KNode(node[0],node[1],node[2])):
msg={"t":"mycode", "y":"q","q":"find_node", "a":{"id":NodeId,"target":NodeId}}
back=s.sendto(bencode(msg),(node[1],node[2]))
def hash_info(self, info):
info_bytes = bencode(info)
sha1 = hashlib.sha1()
sha1.update(info_bytes)
x = sha1.digest()
return x
def dealPing(msg,s,adress):
print("p")
tid=msg['t']
msg={"t":tid, "y":"r", "r":{"id":NodeId}}
s.sendto(bencode(msg),(adress))
return
def get_info_hash(self):
raw_info_hash = (bencode(self.torrent_file['info']))
hash = hashlib.sha1(raw_info_hash).digest()
return hash
def sha1_info(torrent):
"""returns sha1 hash of torrent['info']"""
sha1 = hashlib.sha1()
info_bytes = bencode(torrent['info'])
sha1.update(info_bytes)
return sha1.digest()
def write(pod, data):
"""Writes data to pod's stdin."""
pod.stdin.write(bcoding.bencode(data))
pod.stdin.flush()
def write(data):
logging.info("write data: %s", data)
sys.stdout.buffer.write(bcoding.bencode(data))
sys.stdout.flush()
def info_hash(torrent):
raw_info_hash = (bencode(torrent['info']))
hash = hashlib.sha1(raw_info_hash).digest()
return hash
def __init__(self, torrentpath):
colorama.init()
self.torrentpath = torrentpath
self.announceData = ""
self.infoHash = ""
self.pieceHashes = []
self.pieceLength = 0
# List of files in this torrent
self.files = []
self.length = 0
self.name = ""
self.pieces = ""
self.local_peer_id = bytes("-KC0010-" + str(random.randint(100000000000, 999999999999)), 'utf-8')
self.shouldLoop = 1
# Lock to synchronize calling pieceManager methods from peers (or anywhere else)
self.piemLock = threading.Lock()
self.announceCount = 1
self.trackerid = -1 # -1 means trackerid is not available
self.announceTimer = 0
self.announceInterval = 0 # -1 means interval is not available
self.elapsed = 0
#Status
"""
Oldest Status (lower index) → Newest Status (higher index)
"""
self.NUM_STATUS = 6
self.DISPLAY_STATUS = 1
self.statusList = []
for _ in range(self.NUM_STATUS):
self.statusList.append("None")
# Open .torrent file and decode data
with open(torrentpath, "rb") as f:
torrent = bdecode(f)
# Fields common to both single file and multi file torrents
self.announceData = torrent['announce']
self.pieceLength = torrent['info']['piece length']
self.pieces = torrent['info']['pieces']
for index in range(0, len(self.pieces), 20):
self.pieceHashes.append(self.pieces[index:index + 20])
# Single file
if('length' in torrent['info'].keys()):
print("\033[92mSingle file torrent\033[0m")
self.length = torrent['info']['length']
self.name = torrent['info']['name']
# For single file torrents, filepath and name are both ['info']['name']
self.files.append(file.File(torrent['info']['name'], torrent['info']['name'], torrent['info']['length']))
# self.lastPieceLength = self.length % self.pieceLength
else:
self.length = 0 # For multi file case, equal to sum of length of all files
print("\033[91mMulti file torrent\033[0m")
masterDir = torrent['info']['name'] # The top folder in which to store all the other dirs/files
for f in torrent['info']['files']:
self.length += f['length']
"""
fp - filepath
fn - filename
"""
fp = masterDir
for t in f['path']: # A list
fp += ("/" + t)
fn = f['path'][-1]
self.files.append(file.File(fp, fn, f['length']))
# Create list of pieces to give to pieceManager
self.pieceList = []
# Add all pieces except last piece
for i in range(len(self.pieceHashes) - 1):
self.pieceList.append(p.Piece(i, self.length, self.pieceLength, 0, 0))
# Add last piece
self.pieceList.append(p.Piece(len(self.pieceHashes) - 1, self.length, self.pieceLength, 0, 1))
# Display piece and block info
print("TORRENT INFO")
print("LENGTH: {}, PIECES: {}, PIECE LENGTH: {}".format(self.length, len(self.pieceHashes), self.pieceLength))
print("{} pieces are {} long and have {} blocks each {} long"
.format(len(self.pieceHashes) - 1, self.pieceLength, self.pieceList[-2].number_of_blocks, self.pieceList[-2].block_size))
print("Last piece is {} long and have {} blocks with \"LAST\" block {} long"
.format(self.pieceList[-1].piece_size, self.pieceList[-1].number_of_blocks, self.pieceList[-1].last_block_size))
i = input()
# Calculate infohash
encoded = bencode(torrent['info'])
m = hashlib.sha1(encoded)
self.infoHash = m.digest()
# Instantiate a piece manager for this torrent file
self.changeStatus("Creating piece manager for this torrent")
self.pieManager = piem.pieceManager(self, self.pieceList)
def decodeFile(self): f = open(self.inputURL, "rb") d = bdecode(f.read()) self.url = d['announce'] self.info = d['info'] self.reencoded = bencode(self.info)
