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#!/usr/bin/env python
# The contents of this file are subject to the BitTorrent Open Source License
# Version 1.1 (the License). You may not copy or use this file, in either
# source code or executable form, except in compliance with the License. You
# may obtain a copy of the License at http://www.bittorrent.com/license/.
#
# Software distributed under the License is distributed on an AS IS basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
# Written by Bram Cohen
from __future__ import division
import os
import sys
from sha import sha
from time import time
from threading import Event
from BitTorrent.bencode import bencode, bdecode
from BitTorrent.btformats import check_info
from BitTorrent.parseargs import parseargs, printHelp
from BitTorrent.obsoletepythonsupport import *
from BitTorrent import BTFailure
from khashmir.node import Node
from khashmir.ktable import KTable
from khashmir.util import packPeers, compact_peer_info
ignore = ['core', 'CVS', 'Thumbs.db', 'desktop.ini']
noncharacter_translate = {}
for i in range(0xD800, 0xE000):
noncharacter_translate[i] = None
for i in range(0xFDD0, 0xFDF0):
noncharacter_translate[i] = None
for i in (0xFFFE, 0xFFFF):
noncharacter_translate[i] = None
del i
def dummy(v):
pass
def make_meta_files(url,
files,
flag=Event(),
progressfunc=dummy,
filefunc=dummy,
piece_len_pow2=None,
target=None,
comment=None,
filesystem_encoding=None,
use_tracker=True,
data_dir = None):
if len(files) > 1 and target:
raise BTFailure(_("You can't specify the name of the .torrent file "
"when generating multiple torrents at once"))
if not filesystem_encoding:
try:
getattr(sys, 'getfilesystemencoding')
except AttributeError:
pass
else:
filesystem_encoding = sys.getfilesystemencoding()
if not filesystem_encoding:
filesystem_encoding = 'ascii'
try:
'a1'.decode(filesystem_encoding)
except:
raise BTFailure(_('Filesystem encoding "%s" is not supported in this version')
% filesystem_encoding)
files.sort()
ext = '.torrent'
togen = []
for f in files:
if not f.endswith(ext):
togen.append(f)
total = 0
for f in togen:
total += calcsize(f)
subtotal = [0]
def callback(x):
subtotal[0] += x
progressfunc(subtotal[0] / total)
for f in togen:
if flag.isSet():
break
t = os.path.split(f)
if t[1] == '':
f = t[0]
filefunc(f)
if use_tracker:
make_meta_file(f, url, flag=flag, progress=callback,
piece_len_exp=piece_len_pow2, target=target,
comment=comment, encoding=filesystem_encoding)
else:
make_meta_file_dht(f, url, flag=flag, progress=callback,
piece_len_exp=piece_len_pow2, target=target,
comment=comment, encoding=filesystem_encoding, data_dir=data_dir)
def make_meta_file(path, url, piece_len_exp, flag=Event(), progress=dummy,
comment=None, target=None, encoding='ascii'):
data = {'announce': url.strip(),'creation date': int(time())}
piece_length = 2 ** piece_len_exp
a, b = os.path.split(path)
if not target:
if b == '':
f = a + '.torrent'
else:
f = os.path.join(a, b + '.torrent')
else:
f = target
info = makeinfo(path, piece_length, flag, progress, encoding)
if flag.isSet():
return
check_info(info)
h = file(f, 'wb')
data['info'] = info
if comment:
data['comment'] = comment
h.write(bencode(data))
h.close()
def make_meta_file_dht(path, nodes, piece_len_exp, flag=Event(), progress=dummy,
comment=None, target=None, encoding='ascii', data_dir=None):
# if nodes is empty, then get them out of the routing table in data_dir
# else, expect nodes to be a string of comma seperated <ip>:<port> pairs
# this has a lot of duplicated code from make_meta_file
piece_length = 2 ** piece_len_exp
a, b = os.path.split(path)
if not target:
if b == '':
f = a + '.torrent'
else:
f = os.path.join(a, b + '.torrent')
else:
f = target
info = makeinfo(path, piece_length, flag, progress, encoding)
if flag.isSet():
return
check_info(info)
info_hash = sha(bencode(info)).digest()
if not nodes:
x = open(os.path.join(data_dir, 'routing_table'), 'rb')
d = bdecode(x.read())
x.close()
t = KTable(Node().initWithDict({'id':d['id'], 'host':'127.0.0.1','port': 0}))
for n in d['rt']:
t.insertNode(Node().initWithDict(n))
nodes = [(node.host, node.port) for node in t.findNodes(info_hash) if node.host != '127.0.0.1']
else:
nodes = [(a[0], int(a[1])) for a in [node.strip().split(":") for node in nodes.split(",")]]
data = {'nodes': nodes, 'creation date': int(time())}
h = file(f, 'wb')
data['info'] = info
if comment:
data['comment'] = comment
h.write(bencode(data))
h.close()
def calcsize(path):
total = 0
for s in subfiles(os.path.abspath(path)):
total += os.path.getsize(s[1])
return total
def makeinfo(path, piece_length, flag, progress, encoding):
def to_utf8(name):
try:
u = name.decode(encoding)
except Exception, e:
raise BTFailure(_('Could not convert file/directory name "%s" to '
'utf-8 (%s). Either the assumed filesystem '
'encoding "%s" is wrong or the filename contains '
'illegal bytes.') % (name, str(e), encoding))
if u.translate(noncharacter_translate) != u:
raise BTFailure(_('File/directory name "%s" contains reserved '
'unicode values that do not correspond to '
'characters.') % name)
return u.encode('utf-8')
path = os.path.abspath(path)
if os.path.isdir(path):
subs = subfiles(path)
subs.sort()
pieces = []
sh = sha()
done = 0
fs = []
totalsize = 0.0
totalhashed = 0
for p, f in subs:
totalsize += os.path.getsize(f)
for p, f in subs:
pos = 0
size = os.path.getsize(f)
p2 = [to_utf8(name) for name in p]
fs.append({'length': size, 'path': p2})
h = file(f, 'rb')
while pos < size:
a = min(size - pos, piece_length - done)
sh.update(h.read(a))
if flag.isSet():
return
done += a
pos += a
totalhashed += a
if done == piece_length:
pieces.append(sh.digest())
done = 0
sh = sha()
progress(a)
h.close()
if done > 0:
pieces.append(sh.digest())
return {'pieces': ''.join(pieces),
'piece length': piece_length, 'files': fs,
'name': to_utf8(os.path.split(path)[1])}
else:
size = os.path.getsize(path)
pieces = []
p = 0
h = file(path, 'rb')
while p < size:
x = h.read(min(piece_length, size - p))
if flag.isSet():
return
pieces.append(sha(x).digest())
p += piece_length
if p > size:
p = size
progress(min(piece_length, size - p))
h.close()
return {'pieces': ''.join(pieces),
'piece length': piece_length, 'length': size,
'name': to_utf8(os.path.split(path)[1])}
def subfiles(d):
r = []
stack = [([], d)]
while stack:
p, n = stack.pop()
if os.path.isdir(n):
for s in os.listdir(n):
if s not in ignore and not s.startswith('.'):
stack.append((p + [s], os.path.join(n, s)))
else:
r.append((p, n))
return r
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