| .. | |||||
| __init__.py | |||||
| auth.py | |||||
| cacerts.txt | |||||
| certs.py | |||||
| error.py | |||||
| iri2uri.py | |||||
| socks.py |
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"""SocksiPy - Python SOCKS module.
Version 1.00
Copyright 2006 Dan-Haim. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of Dan Haim nor the names of his contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY DAN HAIM "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL DAN HAIM OR HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMANGE.
This module provides a standard socket-like interface for Python
for tunneling connections through SOCKS proxies.
Minor modifications made by Christopher Gilbert (http://motomastyle.com/) for
use in PyLoris (http://pyloris.sourceforge.net/).
Minor modifications made by Mario Vilas (http://breakingcode.wordpress.com/)
mainly to merge bug fixes found in Sourceforge.
"""
import base64
import socket
import struct
import sys
if getattr(socket, "socket", None) is None:
raise ImportError("socket.socket missing, proxy support unusable")
PROXY_TYPE_SOCKS4 = 1
PROXY_TYPE_SOCKS5 = 2
PROXY_TYPE_HTTP = 3
PROXY_TYPE_HTTP_NO_TUNNEL = 4
_defaultproxy = None
_orgsocket = socket.socket
class ProxyError(Exception):
pass
class GeneralProxyError(ProxyError):
pass
class Socks5AuthError(ProxyError):
pass
class Socks5Error(ProxyError):
pass
class Socks4Error(ProxyError):
pass
class HTTPError(ProxyError):
pass
_generalerrors = (
"success",
"invalid data",
"not connected",
"not available",
"bad proxy type",
"bad input",
)
_socks5errors = (
"succeeded",
"general SOCKS server failure",
"connection not allowed by ruleset",
"Network unreachable",
"Host unreachable",
"Connection refused",
"TTL expired",
"Command not supported",
"Address type not supported",
"Unknown error",
)
_socks5autherrors = (
"succeeded",
"authentication is required",
"all offered authentication methods were rejected",
"unknown username or invalid password",
"unknown error",
)
_socks4errors = (
"request granted",
"request rejected or failed",
"request rejected because SOCKS server cannot connect to identd on the client",
"request rejected because the client program and identd report different "
"user-ids",
"unknown error",
)
def setdefaultproxy(
proxytype=None, addr=None, port=None, rdns=True, username=None, password=None
):
"""setdefaultproxy(proxytype, addr[, port[, rdns[, username[, password]]]])
Sets a default proxy which all further socksocket objects will use,
unless explicitly changed.
"""
global _defaultproxy
_defaultproxy = (proxytype, addr, port, rdns, username, password)
def wrapmodule(module):
"""wrapmodule(module)
Attempts to replace a module's socket library with a SOCKS socket. Must set
a default proxy using setdefaultproxy(...) first.
This will only work on modules that import socket directly into the
namespace;
most of the Python Standard Library falls into this category.
"""
if _defaultproxy != None:
module.socket.socket = socksocket
else:
raise GeneralProxyError((4, "no proxy specified"))
class socksocket(socket.socket):
"""socksocket([family[, type[, proto]]]) -> socket object
Open a SOCKS enabled socket. The parameters are the same as
those of the standard socket init. In order for SOCKS to work,
you must specify family=AF_INET, type=SOCK_STREAM and proto=0.
"""
def __init__(
self, family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0, _sock=None
):
_orgsocket.__init__(self, family, type, proto, _sock)
if _defaultproxy != None:
self.__proxy = _defaultproxy
else:
self.__proxy = (None, None, None, None, None, None)
self.__proxysockname = None
self.__proxypeername = None
self.__httptunnel = True
def __recvall(self, count):
"""__recvall(count) -> data
Receive EXACTLY the number of bytes requested from the socket.
Blocks until the required number of bytes have been received.
"""
data = self.recv(count)
while len(data) < count:
d = self.recv(count - len(data))
if not d:
raise GeneralProxyError((0, "connection closed unexpectedly"))
data = data + d
return data
def sendall(self, content, *args):
""" override socket.socket.sendall method to rewrite the header
for non-tunneling proxies if needed
"""
if not self.__httptunnel:
content = self.__rewriteproxy(content)
return super(socksocket, self).sendall(content, *args)
def __rewriteproxy(self, header):
""" rewrite HTTP request headers to support non-tunneling proxies
(i.e. those which do not support the CONNECT method).
This only works for HTTP (not HTTPS) since HTTPS requires tunneling.
"""
host, endpt = None, None
hdrs = header.split("\r\n")
for hdr in hdrs:
if hdr.lower().startswith("host:"):
host = hdr
elif hdr.lower().startswith("get") or hdr.lower().startswith("post"):
endpt = hdr
if host and endpt:
hdrs.remove(host)
hdrs.remove(endpt)
host = host.split(" ")[1]
endpt = endpt.split(" ")
if self.__proxy[4] != None and self.__proxy[5] != None:
hdrs.insert(0, self.__getauthheader())
hdrs.insert(0, "Host: %s" % host)
hdrs.insert(0, "%s http://%s%s %s" % (endpt[0], host, endpt[1], endpt[2]))
return "\r\n".join(hdrs)
def __getauthheader(self):
auth = self.__proxy[4] + b":" + self.__proxy[5]
return "Proxy-Authorization: Basic " + base64.b64encode(auth).decode()
def setproxy(
self,
proxytype=None,
addr=None,
port=None,
rdns=True,
username=None,
password=None,
headers=None,
):
"""setproxy(proxytype, addr[, port[, rdns[, username[, password]]]])
Sets the proxy to be used.
proxytype - The type of the proxy to be used. Three types
are supported: PROXY_TYPE_SOCKS4 (including socks4a),
PROXY_TYPE_SOCKS5 and PROXY_TYPE_HTTP
addr - The address of the server (IP or DNS).
port - The port of the server. Defaults to 1080 for SOCKS
servers and 8080 for HTTP proxy servers.
rdns - Should DNS queries be preformed on the remote side
(rather than the local side). The default is True.
Note: This has no effect with SOCKS4 servers.
username - Username to authenticate with to the server.
The default is no authentication.
password - Password to authenticate with to the server.
Only relevant when username is also provided.
headers - Additional or modified headers for the proxy connect
request.
"""
self.__proxy = (
proxytype,
addr,
port,
rdns,
username.encode() if username else None,
password.encode() if password else None,
headers,
)
def __negotiatesocks5(self, destaddr, destport):
"""__negotiatesocks5(self,destaddr,destport)
Negotiates a connection through a SOCKS5 server.
"""
# First we'll send the authentication packages we support.
if (self.__proxy[4] != None) and (self.__proxy[5] != None):
# The username/password details were supplied to the
# setproxy method so we support the USERNAME/PASSWORD
# authentication (in addition to the standard none).
self.sendall(struct.pack("BBBB", 0x05, 0x02, 0x00, 0x02))
else:
# No username/password were entered, therefore we
# only support connections with no authentication.
self.sendall(struct.pack("BBB", 0x05, 0x01, 0x00))
# We'll receive the server's response to determine which
# method was selected
chosenauth = self.__recvall(2)
if chosenauth[0:1] != chr(0x05).encode():
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
# Check the chosen authentication method
if chosenauth[1:2] == chr(0x00).encode():
# No authentication is required
pass
elif chosenauth[1:2] == chr(0x02).encode():
# Okay, we need to perform a basic username/password
# authentication.
packet = bytearray()
packet.append(0x01)
packet.append(len(self.__proxy[4]))
packet.extend(self.__proxy[4])
packet.append(len(self.__proxy[5]))
packet.extend(self.__proxy[5])
self.sendall(packet)
authstat = self.__recvall(2)
if authstat[0:1] != chr(0x01).encode():
# Bad response
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
if authstat[1:2] != chr(0x00).encode():
# Authentication failed
self.close()
raise Socks5AuthError((3, _socks5autherrors[3]))
# Authentication succeeded
else:
# Reaching here is always bad
self.close()
if chosenauth[1] == chr(0xFF).encode():
raise Socks5AuthError((2, _socks5autherrors[2]))
else:
raise GeneralProxyError((1, _generalerrors[1]))
# Now we can request the actual connection
req = 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:
ipaddr = socket.inet_aton(destaddr)
req = req + chr(0x01).encode() + ipaddr
except socket.error:
# Well it's not an IP number, so it's probably a DNS name.
if self.__proxy[3]:
# Resolve remotely
ipaddr = None
req = (
req
+ chr(0x03).encode()
+ chr(len(destaddr)).encode()
+ destaddr.encode()
)
else:
# Resolve locally
ipaddr = socket.inet_aton(socket.gethostbyname(destaddr))
req = req + chr(0x01).encode() + ipaddr
req = req + struct.pack(">H", destport)
self.sendall(req)
# Get the response
resp = self.__recvall(4)
if resp[0:1] != chr(0x05).encode():
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
elif resp[1:2] != chr(0x00).encode():
# Connection failed
self.close()
if ord(resp[1:2]) <= 8:
raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])]))
else:
raise Socks5Error((9, _socks5errors[9]))
# Get the bound address/port
elif resp[3:4] == chr(0x01).encode():
boundaddr = self.__recvall(4)
elif resp[3:4] == chr(0x03).encode():
resp = resp + self.recv(1)
boundaddr = self.__recvall(ord(resp[4:5]))
else:
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
boundport = struct.unpack(">H", self.__recvall(2))[0]
self.__proxysockname = (boundaddr, boundport)
if ipaddr != None:
self.__proxypeername = (socket.inet_ntoa(ipaddr), destport)
else:
self.__proxypeername = (destaddr, destport)
def getproxysockname(self):
"""getsockname() -> address info
Returns the bound IP address and port number at the proxy.
"""
return self.__proxysockname
def getproxypeername(self):
"""getproxypeername() -> address info
Returns the IP and port number of the proxy.
"""
return _orgsocket.getpeername(self)
def getpeername(self):
"""getpeername() -> address info
Returns the IP address and port number of the destination
machine (note: getproxypeername returns the proxy)
"""
return self.__proxypeername
def __negotiatesocks4(self, destaddr, destport):
"""__negotiatesocks4(self,destaddr,destport)
Negotiates a connection through a SOCKS4 server.
"""
# Check if the destination address provided is an IP address
rmtrslv = False
try:
ipaddr = socket.inet_aton(destaddr)
except socket.error:
# It's a DNS name. Check where it should be resolved.
if self.__proxy[3]:
ipaddr = struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01)
rmtrslv = True
else:
ipaddr = socket.inet_aton(socket.gethostbyname(destaddr))
# Construct the request packet
req = struct.pack(">BBH", 0x04, 0x01, destport) + ipaddr
# The username parameter is considered userid for SOCKS4
if self.__proxy[4] != None:
req = req + self.__proxy[4]
req = req + chr(0x00).encode()
# DNS name if remote resolving is required
# NOTE: This is actually an extension to the SOCKS4 protocol
# called SOCKS4A and may not be supported in all cases.
if rmtrslv:
req = req + destaddr + chr(0x00).encode()
self.sendall(req)
# Get the response from the server
resp = self.__recvall(8)
if resp[0:1] != chr(0x00).encode():
# Bad data
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
if resp[1:2] != chr(0x5A).encode():
# Server returned an error
self.close()
if ord(resp[1:2]) in (91, 92, 93):
self.close()
raise Socks4Error((ord(resp[1:2]), _socks4errors[ord(resp[1:2]) - 90]))
else:
raise Socks4Error((94, _socks4errors[4]))
# Get the bound address/port
self.__proxysockname = (
socket.inet_ntoa(resp[4:]),
struct.unpack(">H", resp[2:4])[0],
)
if rmtrslv != None:
self.__proxypeername = (socket.inet_ntoa(ipaddr), destport)
else:
self.__proxypeername = (destaddr, destport)
def __negotiatehttp(self, destaddr, destport):
"""__negotiatehttp(self,destaddr,destport)
Negotiates a connection through an HTTP server.
"""
# If we need to resolve locally, we do this now
if not self.__proxy[3]:
addr = socket.gethostbyname(destaddr)
else:
addr = destaddr
headers = ["CONNECT ", addr, ":", str(destport), " HTTP/1.1\r\n"]
wrote_host_header = False
wrote_auth_header = False
if self.__proxy[6] != None:
for key, val in self.__proxy[6].iteritems():
headers += [key, ": ", val, "\r\n"]
wrote_host_header = key.lower() == "host"
wrote_auth_header = key.lower() == "proxy-authorization"
if not wrote_host_header:
headers += ["Host: ", destaddr, "\r\n"]
if not wrote_auth_header:
if self.__proxy[4] != None and self.__proxy[5] != None:
headers += [self.__getauthheader(), "\r\n"]
headers.append("\r\n")
self.sendall("".join(headers).encode())
# We read the response until we get the string "\r\n\r\n"
resp = self.recv(1)
while resp.find("\r\n\r\n".encode()) == -1:
resp = resp + self.recv(1)
# We just need the first line to check if the connection
# was successful
statusline = resp.splitlines()[0].split(" ".encode(), 2)
if statusline[0] not in ("HTTP/1.0".encode(), "HTTP/1.1".encode()):
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
try:
statuscode = int(statusline[1])
except ValueError:
self.close()
raise GeneralProxyError((1, _generalerrors[1]))
if statuscode != 200:
self.close()
raise HTTPError((statuscode, statusline[2]))
self.__proxysockname = ("0.0.0.0", 0)
self.__proxypeername = (addr, destport)
def connect(self, destpair):
"""connect(self, despair)
Connects to the specified destination through a proxy.
destpar - A tuple of the IP/DNS address and the port number.
(identical to socket's connect).
To select the proxy server use setproxy().
"""
# Do a minimal input check first
if (
(not type(destpair) in (list, tuple))
or (len(destpair) < 2)
or (not isinstance(destpair[0], (str, bytes)))
or (type(destpair[1]) != int)
):
raise GeneralProxyError((5, _generalerrors[5]))
if self.__proxy[0] == PROXY_TYPE_SOCKS5:
if self.__proxy[2] != None:
portnum = self.__proxy[2]
else:
portnum = 1080
_orgsocket.connect(self, (self.__proxy[1], portnum))
self.__negotiatesocks5(destpair[0], destpair[1])
elif self.__proxy[0] == PROXY_TYPE_SOCKS4:
if self.__proxy[2] != None:
portnum = self.__proxy[2]
else:
portnum = 1080
_orgsocket.connect(self, (self.__proxy[1], portnum))
self.__negotiatesocks4(destpair[0], destpair[1])
elif self.__proxy[0] == PROXY_TYPE_HTTP:
if self.__proxy[2] != None:
portnum = self.__proxy[2]
else:
portnum = 8080
_orgsocket.connect(self, (self.__proxy[1], portnum))
self.__negotiatehttp(destpair[0], destpair[1])
elif self.__proxy[0] == PROXY_TYPE_HTTP_NO_TUNNEL:
if self.__proxy[2] != None:
portnum = self.__proxy[2]
else:
portnum = 8080
_orgsocket.connect(self, (self.__proxy[1], portnum))
if destpair[1] == 443:
self.__negotiatehttp(destpair[0], destpair[1])
else:
self.__httptunnel = False
elif self.__proxy[0] == None:
_orgsocket.connect(self, (destpair[0], destpair[1]))
else:
raise GeneralProxyError((4, _generalerrors[4]))
| .. | |||||
| __init__.py | |||||
| auth.py | |||||
| cacerts.txt | |||||
| certs.py | |||||
| error.py | |||||
| iri2uri.py | |||||
| socks.py |