New network subsystem, WIP

- finished proxy design
- socks4a and socks5 implemented
- authentication not tested
- resolver for both socks4a and socks5
- http client example using the proxy
This commit is contained in:
Peter Šurda 2017-03-10 23:11:57 +01:00
parent 3ac67e5da7
commit 998935be5f
Signed by: PeterSurda
GPG Key ID: 0C5F50C0B5F37D87
7 changed files with 1146 additions and 207 deletions

View File

@ -1,12 +1,13 @@
import asyncore import asyncore_pollchoose as asyncore
class AdvancedDispatcher(asyncore.dispatcher): class AdvancedDispatcher(asyncore.dispatcher):
_buf_len = 131072 _buf_len = 131072
def __init__(self, sock): def __init__(self):
asyncore.dispatcher.__init__(self, sock) if not hasattr(self, '_map'):
self.read_buf = "" asyncore.dispatcher.__init__(self)
self.write_buf = "" self.read_buf = b""
self.write_buf = b""
self.state = "init" self.state = "init"
def slice_read_buf(self, length=0): def slice_read_buf(self, length=0):
@ -22,7 +23,7 @@ class AdvancedDispatcher(asyncore.dispatcher):
return True return True
def process(self): def process(self):
if len(self.read_buf) == 0: if self.state != "init" and len(self.read_buf) == 0:
return return
while True: while True:
try: try:
@ -37,10 +38,10 @@ class AdvancedDispatcher(asyncore.dispatcher):
self.state = state self.state = state
def writable(self): def writable(self):
return len(self.write_buf) > 0 return self.connecting or len(self.write_buf) > 0
def readable(self): def readable(self):
return len(self.read_buf) < AdvancedDispatcher._buf_len return self.connecting or len(self.read_buf) < AdvancedDispatcher._buf_len
def handle_read(self): def handle_read(self):
self.read_buf += self.recv(AdvancedDispatcher._buf_len) self.read_buf += self.recv(AdvancedDispatcher._buf_len)
@ -49,4 +50,8 @@ class AdvancedDispatcher(asyncore.dispatcher):
def handle_write(self): def handle_write(self):
written = self.send(self.write_buf) written = self.send(self.write_buf)
self.slice_write_buf(written) self.slice_write_buf(written)
# self.process()
def handle_connect(self):
self.process()

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@ -0,0 +1,723 @@
# -*- Mode: Python -*-
# Id: asyncore.py,v 2.51 2000/09/07 22:29:26 rushing Exp
# Author: Sam Rushing <rushing@nightmare.com>
# ======================================================================
# Copyright 1996 by Sam Rushing
#
# All Rights Reserved
#
# Permission to use, copy, modify, and distribute this software and
# its documentation for any purpose and without fee is hereby
# granted, provided that the above copyright notice appear in all
# copies and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of Sam
# Rushing not be used in advertising or publicity pertaining to
# distribution of the software without specific, written prior
# permission.
#
# SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
# NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR
# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# ======================================================================
"""Basic infrastructure for asynchronous socket service clients and servers.
There are only two ways to have a program on a single processor do "more
than one thing at a time". Multi-threaded programming is the simplest and
most popular way to do it, but there is another very different technique,
that lets you have nearly all the advantages of multi-threading, without
actually using multiple threads. it's really only practical if your program
is largely I/O bound. If your program is CPU bound, then pre-emptive
scheduled threads are probably what you really need. Network servers are
rarely CPU-bound, however.
If your operating system supports the select() system call in its I/O
library (and nearly all do), then you can use it to juggle multiple
communication channels at once; doing other work while your I/O is taking
place in the "background." Although this strategy can seem strange and
complex, especially at first, it is in many ways easier to understand and
control than multi-threaded programming. The module documented here solves
many of the difficult problems for you, making the task of building
sophisticated high-performance network servers and clients a snap.
"""
import select
import socket
import sys
import time
import warnings
import os
from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, EINVAL, \
ENOTCONN, ESHUTDOWN, EISCONN, EBADF, ECONNABORTED, EPIPE, EAGAIN, \
errorcode
_DISCONNECTED = frozenset((ECONNRESET, ENOTCONN, ESHUTDOWN, ECONNABORTED, EPIPE,
EBADF))
try:
socket_map
except NameError:
socket_map = {}
def _strerror(err):
try:
return os.strerror(err)
except (ValueError, OverflowError, NameError):
if err in errorcode:
return errorcode[err]
return "Unknown error %s" %err
class ExitNow(Exception):
pass
_reraised_exceptions = (ExitNow, KeyboardInterrupt, SystemExit)
def read(obj):
try:
obj.handle_read_event()
except _reraised_exceptions:
raise
except:
obj.handle_error()
def write(obj):
try:
obj.handle_write_event()
except _reraised_exceptions:
raise
except:
obj.handle_error()
def _exception(obj):
try:
obj.handle_expt_event()
except _reraised_exceptions:
raise
except:
obj.handle_error()
def readwrite(obj, flags):
try:
if flags & select.POLLIN:
obj.handle_read_event()
if flags & select.POLLOUT:
obj.handle_write_event()
if flags & select.POLLPRI:
obj.handle_expt_event()
if flags & (select.POLLHUP | select.POLLERR | select.POLLNVAL):
obj.handle_close()
except socket.error as e:
if e.args[0] not in _DISCONNECTED:
obj.handle_error()
else:
obj.handle_close()
except _reraised_exceptions:
raise
except:
obj.handle_error()
def select_poller(timeout=0.0, map=None):
"""A poller which uses select(), available on most platforms."""
if map is None:
map = socket_map
if map:
r = []; w = []; e = []
for fd, obj in list(map.items()):
is_r = obj.readable()
is_w = obj.writable()
if is_r:
r.append(fd)
# accepting sockets should not be writable
if is_w and not obj.accepting:
w.append(fd)
if is_r or is_w:
e.append(fd)
if [] == r == w == e:
time.sleep(timeout)
return
try:
r, w, e = select.select(r, w, e, timeout)
except KeyboardInterrupt:
return
for fd in r:
obj = map.get(fd)
if obj is None:
continue
read(obj)
for fd in w:
obj = map.get(fd)
if obj is None:
continue
write(obj)
for fd in e:
obj = map.get(fd)
if obj is None:
continue
_exception(obj)
def poll_poller(timeout=0.0, map=None):
"""A poller which uses poll(), available on most UNIXen."""
if map is None:
map = socket_map
if timeout is not None:
# timeout is in milliseconds
timeout = int(timeout*1000)
pollster = select.poll()
if map:
for fd, obj in list(map.items()):
flags = 0
if obj.readable():
flags |= select.POLLIN | select.POLLPRI
# accepting sockets should not be writable
if obj.writable() and not obj.accepting:
flags |= select.POLLOUT
if flags:
pollster.register(fd, flags)
try:
r = pollster.poll(timeout)
except KeyboardInterrupt:
r = []
for fd, flags in r:
obj = map.get(fd)
if obj is None:
continue
readwrite(obj, flags)
# Aliases for backward compatibility
poll = select_poller
poll2 = poll3 = poll_poller
def epoll_poller(timeout=0.0, map=None):
"""A poller which uses epoll(), supported on Linux 2.5.44 and newer."""
if map is None:
map = socket_map
pollster = select.epoll()
if map:
for fd, obj in map.items():
flags = 0
if obj.readable():
flags |= select.POLLIN | select.POLLPRI
if obj.writable():
flags |= select.POLLOUT
if flags:
# Only check for exceptions if object was either readable
# or writable.
flags |= select.POLLERR | select.POLLHUP | select.POLLNVAL
pollster.register(fd, flags)
try:
r = pollster.poll(timeout)
except select.error, err:
if err.args[0] != EINTR:
raise
r = []
for fd, flags in r:
obj = map.get(fd)
if obj is None:
continue
readwrite(obj, flags)
def kqueue_poller(timeout=0.0, map=None):
"""A poller which uses kqueue(), BSD specific."""
if map is None:
map = socket_map
if map:
kqueue = select.kqueue()
flags = select.KQ_EV_ADD | select.KQ_EV_ENABLE
selectables = 0
for fd, obj in map.items():
filter = 0
if obj.readable():
filter |= select.KQ_FILTER_READ
if obj.writable():
filter |= select.KQ_FILTER_WRITE
if filter:
ev = select.kevent(fd, filter=filter, flags=flags)
kqueue.control([ev], 0)
selectables += 1
events = kqueue.control(None, selectables, timeout)
for event in events:
fd = event.ident
obj = map.get(fd)
if obj is None:
continue
if event.filter == select.KQ_FILTER_READ:
read(obj)
if event.filter == select.KQ_FILTER_WRITE:
write(obj)
kqueue.close()
def loop(timeout=30.0, use_poll=False, map=None, count=None,
poller=select_poller):
if map is None:
map = socket_map
# code which grants backward compatibility with "use_poll"
# argument which should no longer be used in favor of
# "poller"
if use_poll and hasattr(select, 'poll'):
poller = poll_poller
else:
poller = select_poller
if count is None:
while map:
poller(timeout, map)
else:
while map and count > 0:
poller(timeout, map)
count = count - 1
class dispatcher:
debug = False
connected = False
accepting = False
connecting = False
closing = False
addr = None
ignore_log_types = frozenset(['warning'])
def __init__(self, sock=None, map=None):
if map is None:
self._map = socket_map
else:
self._map = map
self._fileno = None
if sock:
# Set to nonblocking just to make sure for cases where we
# get a socket from a blocking source.
sock.setblocking(0)
self.set_socket(sock, map)
self.connected = True
# The constructor no longer requires that the socket
# passed be connected.
try:
self.addr = sock.getpeername()
except socket.error as err:
if err.args[0] in (ENOTCONN, EINVAL):
# To handle the case where we got an unconnected
# socket.
self.connected = False
else:
# The socket is broken in some unknown way, alert
# the user and remove it from the map (to prevent
# polling of broken sockets).
self.del_channel(map)
raise
else:
self.socket = None
def __repr__(self):
status = [self.__class__.__module__+"."+self.__class__.__name__]
if self.accepting and self.addr:
status.append('listening')
elif self.connected:
status.append('connected')
if self.addr is not None:
try:
status.append('%s:%d' % self.addr)
except TypeError:
status.append(repr(self.addr))
return '<%s at %#x>' % (' '.join(status), id(self))
__str__ = __repr__
def add_channel(self, map=None):
#self.log_info('adding channel %s' % self)
if map is None:
map = self._map
map[self._fileno] = self
def del_channel(self, map=None):
fd = self._fileno
if map is None:
map = self._map
if fd in map:
#self.log_info('closing channel %d:%s' % (fd, self))
del map[fd]
self._fileno = None
def create_socket(self, family=socket.AF_INET, type=socket.SOCK_STREAM):
self.family_and_type = family, type
sock = socket.socket(family, type)
sock.setblocking(0)
self.set_socket(sock)
def set_socket(self, sock, map=None):
self.socket = sock
## self.__dict__['socket'] = sock
self._fileno = sock.fileno()
self.add_channel(map)
def set_reuse_addr(self):
# try to re-use a server port if possible
try:
self.socket.setsockopt(
socket.SOL_SOCKET, socket.SO_REUSEADDR,
self.socket.getsockopt(socket.SOL_SOCKET,
socket.SO_REUSEADDR) | 1
)
except socket.error:
pass
# ==================================================
# predicates for select()
# these are used as filters for the lists of sockets
# to pass to select().
# ==================================================
def readable(self):
return True
def writable(self):
return True
# ==================================================
# socket object methods.
# ==================================================
def listen(self, num):
self.accepting = True
if os.name == 'nt' and num > 5:
num = 5
return self.socket.listen(num)
def bind(self, addr):
self.addr = addr
return self.socket.bind(addr)
def connect(self, address):
self.connected = False
self.connecting = True
err = self.socket.connect_ex(address)
if err in (EINPROGRESS, EALREADY, EWOULDBLOCK) \
or err == EINVAL and os.name in ('nt', 'ce'):
self.addr = address
return
if err in (0, EISCONN):
self.addr = address
self.handle_connect_event()
else:
raise socket.error(err, errorcode[err])
def accept(self):
# XXX can return either an address pair or None
try:
conn, addr = self.socket.accept()
except TypeError:
return None
except socket.error as why:
if why.args[0] in (EWOULDBLOCK, ECONNABORTED, EAGAIN):
return None
else:
raise
else:
return conn, addr
def send(self, data):
try:
result = self.socket.send(data)
return result
except socket.error as why:
if why.args[0] == EWOULDBLOCK:
return 0
elif why.args[0] in _DISCONNECTED:
self.handle_close()
return 0
else:
raise
def recv(self, buffer_size):
try:
data = self.socket.recv(buffer_size)
if not data:
# a closed connection is indicated by signaling
# a read condition, and having recv() return 0.
self.handle_close()
return b''
else:
return data
except socket.error as why:
# winsock sometimes raises ENOTCONN
if why.args[0] in _DISCONNECTED:
self.handle_close()
return b''
else:
raise
def close(self):
self.connected = False
self.accepting = False
self.connecting = False
self.del_channel()
try:
self.socket.close()
except socket.error as why:
if why.args[0] not in (ENOTCONN, EBADF):
raise
# cheap inheritance, used to pass all other attribute
# references to the underlying socket object.
def __getattr__(self, attr):
try:
retattr = getattr(self.socket, attr)
except AttributeError:
raise AttributeError("%s instance has no attribute '%s'"
%(self.__class__.__name__, attr))
else:
msg = "%(me)s.%(attr)s is deprecated; use %(me)s.socket.%(attr)s " \
"instead" % {'me' : self.__class__.__name__, 'attr' : attr}
warnings.warn(msg, DeprecationWarning, stacklevel=2)
return retattr
# log and log_info may be overridden to provide more sophisticated
# logging and warning methods. In general, log is for 'hit' logging
# and 'log_info' is for informational, warning and error logging.
def log(self, message):
sys.stderr.write('log: %s\n' % str(message))
def log_info(self, message, type='info'):
if type not in self.ignore_log_types:
print('%s: %s' % (type, message))
def handle_read_event(self):
if self.accepting:
# accepting sockets are never connected, they "spawn" new
# sockets that are connected
self.handle_accept()
elif not self.connected:
if self.connecting:
self.handle_connect_event()
self.handle_read()
else:
self.handle_read()
def handle_connect_event(self):
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
if err != 0:
raise socket.error(err, _strerror(err))
self.handle_connect()
self.connected = True
self.connecting = False
def handle_write_event(self):
if self.accepting:
# Accepting sockets shouldn't get a write event.
# We will pretend it didn't happen.
return
if not self.connected:
if self.connecting:
self.handle_connect_event()
self.handle_write()
def handle_expt_event(self):
# handle_expt_event() is called if there might be an error on the
# socket, or if there is OOB data
# check for the error condition first
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
if err != 0:
# we can get here when select.select() says that there is an
# exceptional condition on the socket
# since there is an error, we'll go ahead and close the socket
# like we would in a subclassed handle_read() that received no
# data
self.handle_close()
else:
self.handle_expt()
def handle_error(self):
nil, t, v, tbinfo = compact_traceback()
# sometimes a user repr method will crash.
try:
self_repr = repr(self)
except:
self_repr = '<__repr__(self) failed for object at %0x>' % id(self)
self.log_info(
'uncaptured python exception, closing channel %s (%s:%s %s)' % (
self_repr,
t,
v,
tbinfo
),
'error'
)
self.handle_close()
def handle_expt(self):
self.log_info('unhandled incoming priority event', 'warning')
def handle_read(self):
self.log_info('unhandled read event', 'warning')
def handle_write(self):
self.log_info('unhandled write event', 'warning')
def handle_connect(self):
self.log_info('unhandled connect event', 'warning')
def handle_accept(self):
pair = self.accept()
if pair is not None:
self.handle_accepted(*pair)
def handle_accepted(self, sock, addr):
sock.close()
self.log_info('unhandled accepted event', 'warning')
def handle_close(self):
self.log_info('unhandled close event', 'warning')
self.close()
# ---------------------------------------------------------------------------
# adds simple buffered output capability, useful for simple clients.
# [for more sophisticated usage use asynchat.async_chat]
# ---------------------------------------------------------------------------
class dispatcher_with_send(dispatcher):
def __init__(self, sock=None, map=None):
dispatcher.__init__(self, sock, map)
self.out_buffer = b''
def initiate_send(self):
num_sent = 0
num_sent = dispatcher.send(self, self.out_buffer[:512])
self.out_buffer = self.out_buffer[num_sent:]
def handle_write(self):
self.initiate_send()
def writable(self):
return (not self.connected) or len(self.out_buffer)
def send(self, data):
if self.debug:
self.log_info('sending %s' % repr(data))
self.out_buffer = self.out_buffer + data
self.initiate_send()
# ---------------------------------------------------------------------------
# used for debugging.
# ---------------------------------------------------------------------------
def compact_traceback():
t, v, tb = sys.exc_info()
tbinfo = []
if not tb: # Must have a traceback
raise AssertionError("traceback does not exist")
while tb:
tbinfo.append((
tb.tb_frame.f_code.co_filename,
tb.tb_frame.f_code.co_name,
str(tb.tb_lineno)
))
tb = tb.tb_next
# just to be safe
del tb
file, function, line = tbinfo[-1]
info = ' '.join(['[%s|%s|%s]' % x for x in tbinfo])
return (file, function, line), t, v, info
def close_all(map=None, ignore_all=False):
if map is None:
map = socket_map
for x in list(map.values()):
try:
x.close()
except OSError as x:
if x.args[0] == EBADF:
pass
elif not ignore_all:
raise
except _reraised_exceptions:
raise
except:
if not ignore_all:
raise
map.clear()
# Asynchronous File I/O:
#
# After a little research (reading man pages on various unixen, and
# digging through the linux kernel), I've determined that select()
# isn't meant for doing asynchronous file i/o.
# Heartening, though - reading linux/mm/filemap.c shows that linux
# supports asynchronous read-ahead. So _MOST_ of the time, the data
# will be sitting in memory for us already when we go to read it.
#
# What other OS's (besides NT) support async file i/o? [VMS?]
#
# Regardless, this is useful for pipes, and stdin/stdout...
if os.name == 'posix':
import fcntl
class file_wrapper:
# Here we override just enough to make a file
# look like a socket for the purposes of asyncore.
# The passed fd is automatically os.dup()'d
def __init__(self, fd):
self.fd = os.dup(fd)
def recv(self, *args):
return os.read(self.fd, *args)
def send(self, *args):
return os.write(self.fd, *args)
def getsockopt(self, level, optname, buflen=None):
if (level == socket.SOL_SOCKET and
optname == socket.SO_ERROR and
not buflen):
return 0
raise NotImplementedError("Only asyncore specific behaviour "
"implemented.")
read = recv
write = send
def close(self):
os.close(self.fd)
def fileno(self):
return self.fd
class file_dispatcher(dispatcher):
def __init__(self, fd, map=None):
dispatcher.__init__(self, None, map)
self.connected = True
try:
fd = fd.fileno()
except AttributeError:
pass
self.set_file(fd)
# set it to non-blocking mode
flags = fcntl.fcntl(fd, fcntl.F_GETFL, 0)
flags = flags | os.O_NONBLOCK
fcntl.fcntl(fd, fcntl.F_SETFL, flags)
def set_file(self, fd):
self.socket = file_wrapper(fd)
self._fileno = self.socket.fileno()
self.add_channel()

49
src/network/http-old.py Normal file
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@ -0,0 +1,49 @@
import asyncore
import socket
import time
requestCount = 0
parallel = 50
duration = 60
class HTTPClient(asyncore.dispatcher):
port = 12345
def __init__(self, host, path, connect=True):
if not hasattr(self, '_map'):
asyncore.dispatcher.__init__(self)
if connect:
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.connect((host, HTTPClient.port))
self.buffer = 'GET %s HTTP/1.0\r\n\r\n' % path
def handle_close(self):
global requestCount
requestCount += 1
self.close()
def handle_read(self):
# print self.recv(8192)
self.recv(8192)
def writable(self):
return (len(self.buffer) > 0)
def handle_write(self):
sent = self.send(self.buffer)
self.buffer = self.buffer[sent:]
if __name__ == "__main__":
# initial fill
for i in range(parallel):
HTTPClient('127.0.0.1', '/')
start = time.time()
while (time.time() - start < duration):
if (len(asyncore.socket_map) < parallel):
for i in range(parallel - len(asyncore.socket_map)):
HTTPClient('127.0.0.1', '/')
print "Active connections: %i" % (len(asyncore.socket_map))
asyncore.loop(count=len(asyncore.socket_map)/2)
if requestCount % 100 == 0:
print "Processed %i total messages" % (requestCount)

View File

@ -1,49 +1,86 @@
import asyncore
import socket import socket
import time
requestCount = 0 from advanceddispatcher import AdvancedDispatcher
parallel = 50 import asyncore_pollchoose as asyncore
duration = 60 from proxy import Proxy, ProxyError, GeneralProxyError
from socks5 import Socks5Connection, Socks5Resolver, Socks5AuthError, Socks5Error
from socks4a import Socks4aConnection, Socks4aResolver, Socks4aError
class HttpError(ProxyError): pass
class HTTPClient(asyncore.dispatcher): class HttpConnection(AdvancedDispatcher):
port = 12345 def __init__(self, host, path="/"):
AdvancedDispatcher.__init__(self)
def __init__(self, host, path, connect=True): self.path = path
if not hasattr(self, '_map'): self.destination = (host, 80)
asyncore.dispatcher.__init__(self)
if connect:
self.create_socket(socket.AF_INET, socket.SOCK_STREAM) self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.connect((host, HTTPClient.port)) self.connect(self.destination)
self.buffer = 'GET %s HTTP/1.0\r\n\r\n' % path print "connecting in background to %s:%i" % (self.destination[0], self.destination[1])
def handle_close(self): def state_init(self):
global requestCount self.write_buf += "GET %s HTTP/1.1\r\nHost: %s\r\nConnection: close\r\n\r\n" % (self.path, self.destination[0])
requestCount += 1 print "\"%s\"" % (self.write_buf)
self.close() self.set_state("http_request_sent", 0)
return False
def handle_read(self): def state_http_request_sent(self):
# print self.recv(8192) if len(self.read_buf) > 0:
self.recv(8192) print self.read_buf
self.read_buf = b""
if not self.connected:
self.set_state("close", 0)
return False
def writable(self):
return (len(self.buffer) > 0)
def handle_write(self): class Socks5HttpConnection(Socks5Connection, HttpConnection):
sent = self.send(self.buffer) def __init__(self, host, path="/"):
self.buffer = self.buffer[sent:] self.path = path
Socks5Connection.__init__(self, address=(host, 80))
def state_socks_handshake_done(self):
HttpConnection.state_init(self)
return False
class Socks4aHttpConnection(Socks4aConnection, HttpConnection):
def __init__(self, host, path="/"):
Socks4aConnection.__init__(self, address=(host, 80))
self.path = path
def state_socks_handshake_done(self):
HttpConnection.state_init(self)
return False
if __name__ == "__main__": if __name__ == "__main__":
# initial fill # initial fill
for i in range(parallel):
HTTPClient('127.0.0.1', '/') for host in ("bootstrap8080.bitmessage.org", "bootstrap8444.bitmessage.org"):
start = time.time() proxy = Socks5Resolver(host=host)
while (time.time() - start < duration): while len(asyncore.socket_map) > 0:
if (len(asyncore.socket_map) < parallel): print "loop %s, len %i" % (proxy.state, len(asyncore.socket_map))
for i in range(parallel - len(asyncore.socket_map)): asyncore.loop(timeout=1, count=1)
HTTPClient('127.0.0.1', '/') proxy.resolved()
print "Active connections: %i" % (len(asyncore.socket_map))
asyncore.loop(count=len(asyncore.socket_map)/2) proxy = Socks4aResolver(host=host)
if requestCount % 100 == 0: while len(asyncore.socket_map) > 0:
print "Processed %i total messages" % (requestCount) print "loop %s, len %i" % (proxy.state, len(asyncore.socket_map))
asyncore.loop(timeout=1, count=1)
proxy.resolved()
for host in ("bitmessage.org",):
direct = HttpConnection(host)
while len(asyncore.socket_map) > 0:
# print "loop, state = %s" % (direct.state)
asyncore.loop(timeout=1, count=1)
proxy = Socks5HttpConnection(host)
while len(asyncore.socket_map) > 0:
# print "loop, state = %s" % (proxy.state)
asyncore.loop(timeout=1, count=1)
proxy = Socks4aHttpConnection(host)
while len(asyncore.socket_map) > 0:
# print "loop, state = %s" % (proxy.state)
asyncore.loop(timeout=1, count=1)

View File

@ -1,15 +1,15 @@
# SOCKS5 only
import asyncore
import socket import socket
import struct
from advanceddispatcher import AdvancedDispatcher from advanceddispatcher import AdvancedDispatcher
import asyncore_pollchoose as asyncore
class ProxyError(Exception): pass
class GeneralProxyError(ProxyError): pass
class Proxy(AdvancedDispatcher): class Proxy(AdvancedDispatcher):
# these are global, and if you change config during runtime, all active/new # these are global, and if you change config during runtime, all active/new
# instances should change too # instances should change too
_proxy = ["", 1080] _proxy = ("127.0.0.1", 9050)
_auth = None _auth = None
_remote_dns = True _remote_dns = True
@ -19,8 +19,8 @@ class Proxy(AdvancedDispatcher):
@proxy.setter @proxy.setter
def proxy(self, address): def proxy(self, address):
if (not type(address) in (list,tuple)) or (len(address) < 2) or (type(address[0]) != type('')) or (type(address[1]) != int): if type(address) != tuple or (len(address) < 2) or (type(str(address[0])) != type('')) or (type(address[1]) != int):
raise raise ValueError
self.__class__._proxy = address self.__class__._proxy = address
@property @property
@ -31,160 +31,11 @@ class Proxy(AdvancedDispatcher):
def auth(self, authTuple): def auth(self, authTuple):
self.__class__._auth = authTuple self.__class__._auth = authTuple
def __init__(self, address=None): def __init__(self, address):
if (not type(address) in (list,tuple)) or (len(address) < 2) or (type(address[0]) != type('')) or (type(address[1]) != int): if type(address) != tuple or (len(address) < 2) or (type(str(address[0])) != type('')) or (type(address[1]) != int):
raise raise ValueError
AdvancedDispatcher.__init__(self, self.sock) AdvancedDispatcher.__init__(self)
self.destination = address self.destination = address
self.create_socket(socket.AF_INET, socket.SOCK_STREAM) self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.sslSocket.setblocking(0)
self.connect(self.proxy) self.connect(self.proxy)
print "connecting in background to %s:%i" % (self.proxy[0], self.proxy[1])
class SOCKS5(Proxy):
def __init__(self, address=None, sock=None):
Proxy.__init__(self, address)
self.state = "init"
def handle_connect(self):
self.process()
def state_init(self):
if self._auth:
self.write_buf += struct.pack('BBBB', 0x05, 0x02, 0x00, 0x02)
else:
self.write_buf += struct.pack('BBB', 0x05, 0x01, 0x00)
self.set_state("auth_1", 0)
def state_auth_1(self):
if not self.read_buf_sufficient(2):
return False
ret = struct.unpack('BB', self.read_buf)
self.read_buf = self.read_buf[2:]
if ret[0] != 5:
# general error
raise
elif ret[1] == 0:
# no auth required
self.set_state("auth_done", 2)
elif ret[1] == 2:
# username/password
self.write_buf += struct.pack('BB', 1, len(self._auth[0])) + \
self._auth[0] + struct.pack('B', len(self._auth[1])) + \
self._auth[1]
self.set_state("auth_1", 2)
else:
if ret[1] == 0xff:
# auth error
raise
else:
# other error
raise
def state_auth_needed(self):
if not self.read_buf_sufficient(2):
return False
ret = struct.unpack('BB', self.read_buf)
if ret[0] != 1:
# general error
raise
if ret[1] != 0:
# auth error
raise
# all ok
self.set_state = ("auth_done", 2)
def state_pre_connect(self):
if not self.read_buf_sufficient(4):
return False
# Get the response
if self.read_buf[0:1] != chr(0x05).encode():
# general error
self.close()
raise
elif self.read_buf[1:2] != chr(0x00).encode():
# Connection failed
self.close()
if ord(self.read_buf[1:2])<=8:
# socks 5 erro
raise
#raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])]))
else:
raise
#raise Socks5Error((9, _socks5errors[9]))
# Get the bound address/port
elif self.read_buf[3:4] == chr(0x01).encode():
self.set_state("proxy_addr_1", 4)
elif self.read_buf[3:4] == chr(0x03).encode():
self.set_state("proxy_addr_2_1", 4)
else:
self.close()
raise GeneralProxyError((1,_generalerrors[1]))
def state_proxy_addr_1(self):
if not self.read_buf_sufficient(4):
return False
self.boundaddr = self.read_buf[0:4]
self.set_state("proxy_port", 4)
def state_proxy_addr_2_1(self):
if not self.read_buf_sufficient(1):
return False
self.address_length = ord(self.read_buf[0:1])
self.set_state("proxy_addr_2_2", 1)
def state_proxy_addr_2_2(self):
if not self.read_buf_sufficient(self.address_length):
return False
self.boundaddr = read_buf
self.set_state("proxy_port", self.address_length)
def state_proxy_port(self):
if not self.read_buf_sufficient(2):
return False
self.boundport = struct.unpack(">H", self.read_buf[0:2])[0]
self.__proxysockname = (self.boundaddr, self.boundport)
if self.ipaddr != None:
self.__proxypeername = (socket.inet_ntoa(self.ipaddr), self.destination[1])
else:
self.__proxypeername = (self.destination[1], destport)
class SOCKS5Connection(SOCKS5):
def __init__(self, address):
SOCKS5.__init__(self, address)
def state_auth_done(self):
# Now we can request the actual connection
self.write_buf += struct.pack('BBB', 0x05, 0x01, 0x00)
# If the given destination address is an IP address, we'll
# use the IPv4 address request even if remote resolving was specified.
try:
self.ipaddr = socket.inet_aton(self.destination[0])
self.write_buf += chr(0x01).encode() + ipaddr
except socket.error:
# Well it's not an IP number, so it's probably a DNS name.
if Proxy._remote_dns:
# Resolve remotely
self.ipaddr = None
self.write_buf += chr(0x03).encode() + chr(len(self.destination[0])).encode() + self.destination[0]
else:
# Resolve locally
self.ipaddr = socket.inet_aton(socket.gethostbyname(self.destination[0]))
self.write_buf += chr(0x01).encode() + ipaddr
self.write_buf += struct.pack(">H", self.destination[1])
self.set_state = ("pre_connect", 0)
class SOCKS5Resolver(SOCKS5):
def __init__(self, host):
self.host = host
self.port = 8444
SOCKS5.__init__(self, [self.host, self.port])
def state_auth_done(self):
# Now we can request the actual connection
self.write_buf += struct.pack('BBB', 0x05, 0xF0, 0x00)
self.write_buf += chr(0x03).encode() + chr(len(self.host)).encode() + self.host
self.write_buf += struct.pack(">H", self.port)
self.state = "pre_connect"

104
src/network/socks4a.py Normal file
View File

@ -0,0 +1,104 @@
import socket
import struct
from advanceddispatcher import AdvancedDispatcher
import asyncore_pollchoose as asyncore
from proxy import Proxy, ProxyError, GeneralProxyError
class Socks4aError(ProxyError): pass
class Socks4a(Proxy):
def __init__(self, address=None):
Proxy.__init__(self, address)
self.ipaddr = None
self.destport = address[1]
def state_init(self):
self.set_state("auth_done", 0)
def state_pre_connect(self):
if not self.read_buf_sufficient(8):
return False
# Get the response
if self.read_buf[0:1] != chr(0x00).encode():
# bad data
self.close()
raise Socks4aError
elif self.read_buf[1:2] != chr(0x5A).encode():
# Connection failed
self.close()
if ord(self.read_buf[1:2]) in (91, 92, 93):
# socks 4 erro
raise Socks4aError
#raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])-90]))
else:
raise Socks4aError
#raise Socks4aError((94, _socks4aerrors[4]))
# Get the bound address/port
self.boundport = struct.unpack(">H", self.read_buf[2:4])[0]
self.boundaddr = self.read_buf[4:]
self.__proxysockname = (self.boundaddr, self.boundport)
if self.ipaddr != None:
self.__proxypeername = (socket.inet_ntoa(self.ipaddr), self.destination[1])
else:
self.__proxypeername = (self.destination[0], self.destport)
self.set_state("socks_handshake_done", 8)
def proxy_sock_name(self):
return socket.inet_ntoa(self.__proxysockname[0])
def state_socks_handshake_done(self):
return False
class Socks4aConnection(Socks4a):
def __init__(self, address):
Socks4a.__init__(self, address=address)
def state_auth_done(self):
# Now we can request the actual connection
rmtrslv = False
self.write_buf += struct.pack('>BBH', 0x04, 0x01, self.destination[1])
# If the given destination address is an IP address, we'll
# use the IPv4 address request even if remote resolving was specified.
try:
self.ipaddr = socket.inet_aton(self.destination[0])
self.write_buf += ipaddr
except socket.error:
# Well it's not an IP number, so it's probably a DNS name.
if Proxy._remote_dns:
# Resolve remotely
rmtrslv = True
self.ipaddr = None
self.write_buf += struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01)
else:
# Resolve locally
self.ipaddr = socket.inet_aton(socket.gethostbyname(self.destination[0]))
self.write_buf += self.ipaddr
if self._auth:
self.write_buf += self._auth[0]
self.write_buf += chr(0x00).encode()
if rmtrslv:
self.write_buf += self.destination[0] + chr(0x00).encode()
self.set_state("pre_connect", 0)
class Socks4aResolver(Socks4a):
def __init__(self, host):
self.host = host
self.port = 8444
Socks4a.__init__(self, address=(self.host, self.port))
def state_auth_done(self):
# Now we can request the actual connection
self.write_buf += struct.pack('>BBH', 0x04, 0xF0, self.destination[1])
self.write_buf += struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01)
if self._auth:
self.write_buf += self._auth[0]
self.write_buf += chr(0x00).encode()
self.write_buf += self.host + chr(0x00).encode()
self.set_state("pre_connect", 0)
def resolved(self):
print "Resolved %s as %s" % (self.host, self.proxy_sock_name())

170
src/network/socks5.py Normal file
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@ -0,0 +1,170 @@
import socket
import struct
from advanceddispatcher import AdvancedDispatcher
import asyncore_pollchoose as asyncore
from proxy import Proxy, ProxyError, GeneralProxyError
class Socks5AuthError(ProxyError): pass
class Socks5Error(ProxyError): pass
class Socks5(Proxy):
def __init__(self, address=None):
Proxy.__init__(self, address)
self.ipaddr = None
self.destport = address[1]
def handle_connect(self):
self.process()
def state_init(self):
if self._auth:
self.write_buf += struct.pack('BBBB', 0x05, 0x02, 0x00, 0x02)
else:
self.write_buf += struct.pack('BBB', 0x05, 0x01, 0x00)
self.set_state("auth_1", 0)
def state_auth_1(self):
if not self.read_buf_sufficient(2):
return False
ret = struct.unpack('BB', self.read_buf)
self.read_buf = self.read_buf[2:]
if ret[0] != 5:
# general error
raise GeneralProxyError
elif ret[1] == 0:
# no auth required
self.set_state("auth_done", 2)
elif ret[1] == 2:
# username/password
self.write_buf += struct.pack('BB', 1, len(self._auth[0])) + \
self._auth[0] + struct.pack('B', len(self._auth[1])) + \
self._auth[1]
self.set_state("auth_1", 2)
else:
if ret[1] == 0xff:
# auth error
raise Socks5AuthError
else:
# other error
raise Socks5Error
def state_auth_needed(self):
if not self.read_buf_sufficient(2):
return False
ret = struct.unpack('BB', self.read_buf)
if ret[0] != 1:
# general error
raise Socks5Error
if ret[1] != 0:
# auth error
raise Socks5AuthError
# all ok
self.set_state = ("auth_done", 2)
def state_pre_connect(self):
if not self.read_buf_sufficient(4):
return False
# Get the response
if self.read_buf[0:1] != chr(0x05).encode():
# general error
self.close()
raise Socks5Error
elif self.read_buf[1:2] != chr(0x00).encode():
# Connection failed
self.close()
if ord(self.read_buf[1:2])<=8:
# socks 5 erro
raise Socks5Error
#raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])]))
else:
raise Socks5Error
#raise Socks5Error((9, _socks5errors[9]))
# Get the bound address/port
elif self.read_buf[3:4] == chr(0x01).encode():
self.set_state("proxy_addr_1", 4)
elif self.read_buf[3:4] == chr(0x03).encode():
self.set_state("proxy_addr_2_1", 4)
else:
self.close()
#raise GeneralProxyError((1,_generalerrors[1]))
raise GeneralProxyError
def state_proxy_addr_1(self):
if not self.read_buf_sufficient(4):
return False
self.boundaddr = self.read_buf[0:4]
self.set_state("proxy_port", 4)
def state_proxy_addr_2_1(self):
if not self.read_buf_sufficient(1):
return False
self.address_length = ord(self.read_buf[0:1])
self.set_state("proxy_addr_2_2", 1)
def state_proxy_addr_2_2(self):
if not self.read_buf_sufficient(self.address_length):
return False
self.boundaddr = read_buf
self.set_state("proxy_port", self.address_length)
def state_proxy_port(self):
if not self.read_buf_sufficient(2):
return False
self.boundport = struct.unpack(">H", self.read_buf[0:2])[0]
self.__proxysockname = (self.boundaddr, self.boundport)
if self.ipaddr != None:
self.__proxypeername = (socket.inet_ntoa(self.ipaddr), self.destination[1])
else:
self.__proxypeername = (self.destination[0], self.destport)
self.set_state("socks_handshake_done", 2)
def proxy_sock_name(self):
return socket.inet_ntoa(self.__proxysockname[0])
def state_socks_handshake_done(self):
return False
class Socks5Connection(Socks5):
def __init__(self, address):
Socks5.__init__(self, address=address)
def state_auth_done(self):
# Now we can request the actual connection
self.write_buf += struct.pack('BBB', 0x05, 0x01, 0x00)
# If the given destination address is an IP address, we'll
# use the IPv4 address request even if remote resolving was specified.
try:
self.ipaddr = socket.inet_aton(self.destination[0])
self.write_buf += chr(0x01).encode() + self.ipaddr
except socket.error:
# Well it's not an IP number, so it's probably a DNS name.
if Proxy._remote_dns:
# Resolve remotely
self.ipaddr = None
self.write_buf += chr(0x03).encode() + chr(len(self.destination[0])).encode() + self.destination[0]
else:
# Resolve locally
self.ipaddr = socket.inet_aton(socket.gethostbyname(self.destination[0]))
self.write_buf += chr(0x01).encode() + self.ipaddr
self.write_buf += struct.pack(">H", self.destination[1])
self.set_state("pre_connect", 0)
class Socks5Resolver(Socks5):
def __init__(self, host):
self.host = host
self.port = 8444
Socks5.__init__(self, address=(self.host, self.port))
def state_auth_done(self):
# Now we can request the actual connection
self.write_buf += struct.pack('BBB', 0x05, 0xF0, 0x00)
self.write_buf += chr(0x03).encode() + chr(len(self.host)).encode() + str(self.host)
self.write_buf += struct.pack(">H", self.port)
self.set_state("pre_connect", 0)
def resolved(self):
print "Resolved %s as %s" % (self.host, self.proxy_sock_name())