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socks.py

"""
SocksiPy - Python SOCKS module.
Version 1.5.7

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

Modifications made by Anorov (https://github.com/Anorov)
-Forked and renamed to PySocks
-Fixed issue with HTTP proxy failure checking (same bug that was in the old ___recvall() method)
-Included SocksiPyHandler (sockshandler.py), to be used as a urllib2 handler,
 courtesy of e000 (https://github.com/e000): https://gist.github.com/869791#file_socksipyhandler.py
-Re-styled code to make it readable
    -Aliased PROXY_TYPE_SOCKS5 -> SOCKS5 etc.
    -Improved exception handling and output
    -Removed irritating use of sequence indexes, replaced with tuple unpacked variables
    -Fixed up Python 3 bytestring handling - chr(0x03).encode() -> b"\x03"
    -Other general fixes
-Added clarification that the HTTP proxy connection method only supports CONNECT-style tunneling HTTP proxies
-Various small bug fixes
"""

__version__ = "1.5.7"

import socket
import struct
from errno import EOPNOTSUPP, EINVAL, EAGAIN
from io import BytesIO
from os import SEEK_CUR
from collections import Callable
from base64 import b64encode

PROXY_TYPE_SOCKS4 = SOCKS4 = 1
PROXY_TYPE_SOCKS5 = SOCKS5 = 2
PROXY_TYPE_HTTP = HTTP = 3

PROXY_TYPES = {"SOCKS4": SOCKS4, "SOCKS5": SOCKS5, "HTTP": HTTP}
PRINTABLE_PROXY_TYPES = dict(zip(PROXY_TYPES.values(), PROXY_TYPES.keys()))

_orgsocket = _orig_socket = socket.socket

class ProxyError(IOError):
    """
    socket_err contains original socket.error exception.
    """
    def __init__(self, msg, socket_err=None):
        self.msg = msg
        self.socket_err = socket_err

if socket_err:
            self.msg += ": {0}".format(socket_err)

def __str__(self):
        return self.msg

class GeneralProxyError(ProxyError): pass
class ProxyConnectionError(ProxyError): pass
class SOCKS5AuthError(ProxyError): pass
class SOCKS5Error(ProxyError): pass
class SOCKS4Error(ProxyError): pass
class HTTPError(ProxyError): pass

SOCKS4_ERRORS = { 0x5B: "Request rejected or failed",
                  0x5C: "Request rejected because SOCKS server cannot connect to identd on the client",
                  0x5D: "Request rejected because the client program and identd report different user-ids"
                }

SOCKS5_ERRORS = { 0x01: "General SOCKS server failure",
                  0x02: "Connection not allowed by ruleset",
                  0x03: "Network unreachable",
                  0x04: "Host unreachable",
                  0x05: "Connection refused",
                  0x06: "TTL expired",
                  0x07: "Command not supported, or protocol error",
                  0x08: "Address type not supported"
                }

DEFAULT_PORTS = { SOCKS4: 1080,
                  SOCKS5: 1080,
                  HTTP: 8080
                }

def set_default_proxy(proxy_type=None, addr=None, port=None, rdns=True, username=None, password=None):
    """
    set_default_proxy(proxy_type, addr[, port[, rdns[, username, password]]])

Sets a default proxy which all further socksocket objects will use,
    unless explicitly changed. All parameters are as for socket.set_proxy().
    """
    socksocket.default_proxy = (proxy_type, addr, port, rdns,
                                username.encode() if username else None,
                                password.encode() if password else None)

setdefaultproxy = set_default_proxy

def get_default_proxy():
    """
    Returns the default proxy, set by set_default_proxy.
    """
    return socksocket.default_proxy

getdefaultproxy = get_default_proxy

def wrap_module(module):
    """
    Attempts to replace a module's socket library with a SOCKS socket. Must set
    a default proxy using set_default_proxy(...) 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 socksocket.default_proxy:
        module.socket.socket = socksocket
    else:
        raise GeneralProxyError("No default proxy specified")

wrapmodule = wrap_module

def create_connection(dest_pair, proxy_type=None, proxy_addr=None,
                      proxy_port=None, proxy_rdns=True,
                      proxy_username=None, proxy_password=None,
                      timeout=None, source_address=None,
                      socket_options=None):
    """create_connection(dest_pair, *[, timeout], **proxy_args) -> socket object

Like socket.create_connection(), but connects to proxy
    before returning the socket object.

dest_pair - 2-tuple of (IP/hostname, port).
    **proxy_args - Same args passed to socksocket.set_proxy() if present.
    timeout - Optional socket timeout value, in seconds.
    source_address - tuple (host, port) for the socket to bind to as its source
    address before connecting (only for compatibility)
    """
    # Remove IPv6 brackets on the remote address and proxy address.
    remote_host, remote_port = dest_pair
    if remote_host.startswith('['):
        remote_host = remote_host.strip('[]')
    if proxy_addr and proxy_addr.startswith('['):
        proxy_addr = proxy_addr.strip('[]')

err = None

# Allow the SOCKS proxy to be on IPv4 or IPv6 addresses.
    for r in socket.getaddrinfo(proxy_addr, proxy_port, 0, socket.SOCK_STREAM):
        family, socket_type, proto, canonname, sa = r
        sock = None
        try:
            sock = socksocket(family, socket_type, proto)

if socket_options is not None:
                for opt in socket_options:
                    sock.setsockopt(*opt)

if isinstance(timeout, (int, float)):
                sock.settimeout(timeout)

if proxy_type is not None:
                sock.set_proxy(proxy_type, proxy_addr, proxy_port, proxy_rdns,
                               proxy_username, proxy_password)
            if source_address is not None:
                sock.bind(source_address)

sock.connect((remote_host, remote_port))
            return sock

except socket.error as e:
            err = e
            if sock is not None:
                sock.close()
                sock = None

if err is not None:
        raise err

raise socket.error("gai returned empty list.")

class _BaseSocket(socket.socket):
    """Allows Python 2's "delegated" methods such as send() to be overridden
    """
    def __init__(self, *pos, **kw):
        _orig_socket.__init__(self, *pos, **kw)

self._savedmethods = dict()
        for name in self._savenames:
            self._savedmethods[name] = getattr(self, name)
            delattr(self, name)  # Allows normal overriding mechanism to work

_savenames = list()

def _makemethod(name):
    return lambda self, *pos, **kw: self._savedmethods[name](*pos, **kw)
for name in ("sendto", "send", "recvfrom", "recv"):
    method = getattr(_BaseSocket, name, None)

# Determine if the method is not defined the usual way
    # as a function in the class.
    # Python 2 uses __slots__, so there are descriptors for each method,
    # but they are not functions.
    if not isinstance(method, Callable):
        _BaseSocket._savenames.append(name)
        setattr(_BaseSocket, name, _makemethod(name))

class socksocket(_BaseSocket):
    """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 and proto=0.
    The "type" argument must be either SOCK_STREAM or SOCK_DGRAM.
    """

default_proxy = None

def __init__(self, family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0, *args, **kwargs):
        if type not in (socket.SOCK_STREAM, socket.SOCK_DGRAM):
            msg = "Socket type must be stream or datagram, not {!r}"
            raise ValueError(msg.format(type))

_BaseSocket.__init__(self, family, type, proto, *args, **kwargs)
        self._proxyconn = None  # TCP connection to keep UDP relay alive

if self.default_proxy:
            self.proxy = self.default_proxy
        else:
            self.proxy = (None, None, None, None, None, None)
        self.proxy_sockname = None
        self.proxy_peername = None

def _readall(self, file, count):
        """
        Receive EXACTLY the number of bytes requested from the file object.
        Blocks until the required number of bytes have been received.
        """
        data = b""
        while len(data) < count:
            d = file.read(count - len(data))
            if not d:
                raise GeneralProxyError("Connection closed unexpectedly")
            data += d
        return data

def set_proxy(self, proxy_type=None, addr=None, port=None, rdns=True, username=None, password=None):
        """set_proxy(proxy_type, addr[, port[, rdns[, username[, password]]]])
        Sets the proxy to be used.

proxy_type -    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 performed 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.
        """
        self.proxy = (proxy_type, addr, port, rdns,
                      username.encode() if username else None,
                      password.encode() if password else None)

setproxy = set_proxy

def bind(self, *pos, **kw):
        """
        Implements proxy connection for UDP sockets,
        which happens during the bind() phase.
        """
        proxy_type, proxy_addr, proxy_port, rdns, username, password = self.proxy
        if not proxy_type or self.type != socket.SOCK_DGRAM:
            return _orig_socket.bind(self, *pos, **kw)

if self._proxyconn:
            raise socket.error(EINVAL, "Socket already bound to an address")
        if proxy_type != SOCKS5:
            msg = "UDP only supported by SOCKS5 proxy type"
            raise socket.error(EOPNOTSUPP, msg)
        _BaseSocket.bind(self, *pos, **kw)

# Need to specify actual local port because
        # some relays drop packets if a port of zero is specified.
        # Avoid specifying host address in case of NAT though.
        _, port = self.getsockname()
        dst = ("0", port)

self._proxyconn = _orig_socket()
        proxy = self._proxy_addr()
        self._proxyconn.connect(proxy)

UDP_ASSOCIATE = b"\x03"
        _, relay = self._SOCKS5_request(self._proxyconn, UDP_ASSOCIATE, dst)

# The relay is most likely on the same host as the SOCKS proxy,
        # but some proxies return a private IP address (10.x.y.z)
        host, _ = proxy
        _, port = relay
        _BaseSocket.connect(self, (host, port))
        self.proxy_sockname = ("0.0.0.0", 0)  # Unknown

def sendto(self, bytes, *args, **kwargs):
        if self.type != socket.SOCK_DGRAM:
            return _BaseSocket.sendto(self, bytes, *args, **kwargs)
        if not self._proxyconn:
            self.bind(("", 0))

address = args[-1]
        flags = args[:-1]

header = BytesIO()
        RSV = b"\x00\x00"
        header.write(RSV)
        STANDALONE = b"\x00"
        header.write(STANDALONE)
        self._write_SOCKS5_address(address, header)

sent = _BaseSocket.send(self, header.getvalue() + bytes, *flags, **kwargs)
        return sent - header.tell()

def send(self, bytes, flags=0, **kwargs):
        if self.type == socket.SOCK_DGRAM:
            return self.sendto(bytes, flags, self.proxy_peername, **kwargs)
        else:
            return _BaseSocket.send(self, bytes, flags, **kwargs)

def recvfrom(self, bufsize, flags=0):
        if self.type != socket.SOCK_DGRAM:
            return _BaseSocket.recvfrom(self, bufsize, flags)
        if not self._proxyconn:
            self.bind(("", 0))

buf = BytesIO(_BaseSocket.recv(self, bufsize, flags))
        buf.seek(+2, SEEK_CUR)
        frag = buf.read(1)
        if ord(frag):
            raise NotImplementedError("Received UDP packet fragment")
        fromhost, fromport = self._read_SOCKS5_address(buf)

if self.proxy_peername:
            peerhost, peerport = self.proxy_peername
            if fromhost != peerhost or peerport not in (0, fromport):
                raise socket.error(EAGAIN, "Packet filtered")

return (buf.read(), (fromhost, fromport))

def recv(self, *pos, **kw):
        bytes, _ = self.recvfrom(*pos, **kw)
        return bytes

def close(self):
        if self._proxyconn:
            self._proxyconn.close()
        return _BaseSocket.close(self)

def get_proxy_sockname(self):
        """
        Returns the bound IP address and port number at the proxy.
        """
        return self.proxy_sockname

getproxysockname = get_proxy_sockname

def get_proxy_peername(self):
        """
        Returns the IP and port number of the proxy.
        """
        return _BaseSocket.getpeername(self)

getproxypeername = get_proxy_peername

def get_peername(self):
        """
        Returns the IP address and port number of the destination
        machine (note: get_proxy_peername returns the proxy)
        """
        return self.proxy_peername

getpeername = get_peername

def _negotiate_SOCKS5(self, *dest_addr):
        """
        Negotiates a stream connection through a SOCKS5 server.
        """
        CONNECT = b"\x01"
        self.proxy_peername, self.proxy_sockname = self._SOCKS5_request(self,
            CONNECT, dest_addr)

def _SOCKS5_request(self, conn, cmd, dst):
        """
        Send SOCKS5 request with given command (CMD field) and
        address (DST field). Returns resolved DST address that was used.
        """
        proxy_type, addr, port, rdns, username, password = self.proxy

writer = conn.makefile("wb")
        reader = conn.makefile("rb", 0)  # buffering=0 renamed in Python 3
        try:
            # First we'll send the authentication packages we support.
            if username and password:
                # The username/password details were supplied to the
                # set_proxy method so we support the USERNAME/PASSWORD
                # authentication (in addition to the standard none).
                writer.write(b"\x05\x02\x00\x02")
            else:
                # No username/password were entered, therefore we
                # only support connections with no authentication.
                writer.write(b"\x05\x01\x00")

# We'll receive the server's response to determine which
            # method was selected
            writer.flush()
            chosen_auth = self._readall(reader, 2)

if chosen_auth[0:1] != b"\x05":
                # Note: string[i:i+1] is used because indexing of a bytestring
                # via bytestring[i] yields an integer in Python 3
                raise GeneralProxyError("SOCKS5 proxy server sent invalid data")

# Check the chosen authentication method

if chosen_auth[1:2] == b"\x02":
                # Okay, we need to perform a basic username/password
                # authentication.
                writer.write(b"\x01" + chr(len(username)).encode()
                             + username
                             + chr(len(password)).encode()
                             + password)
                writer.flush()
                auth_status = self._readall(reader, 2)
                if auth_status[0:1] != b"\x01":
                    # Bad response
                    raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
                if auth_status[1:2] != b"\x00":
                    # Authentication failed
                    raise SOCKS5AuthError("SOCKS5 authentication failed")

# Otherwise, authentication succeeded

# No authentication is required if 0x00
            elif chosen_auth[1:2] != b"\x00":
                # Reaching here is always bad
                if chosen_auth[1:2] == b"\xFF":
                    raise SOCKS5AuthError("All offered SOCKS5 authentication methods were rejected")
                else:
                    raise GeneralProxyError("SOCKS5 proxy server sent invalid data")

# Now we can request the actual connection
            writer.write(b"\x05" + cmd + b"\x00")
            resolved = self._write_SOCKS5_address(dst, writer)
            writer.flush()

# Get the response
            resp = self._readall(reader, 3)
            if resp[0:1] != b"\x05":
                raise GeneralProxyError("SOCKS5 proxy server sent invalid data")

status = ord(resp[1:2])
            if status != 0x00:
                # Connection failed: server returned an error
                error = SOCKS5_ERRORS.get(status, "Unknown error")
                raise SOCKS5Error("{0:#04x}: {1}".format(status, error))

# Get the bound address/port
            bnd = self._read_SOCKS5_address(reader)
            return (resolved, bnd)
        finally:
            reader.close()
            writer.close()

def _write_SOCKS5_address(self, addr, file):
        """
        Return the host and port packed for the SOCKS5 protocol,
        and the resolved address as a tuple object.
        """
        host, port = addr
        proxy_type, _, _, rdns, username, password = self.proxy
        family_to_byte = {socket.AF_INET: b"\x01", socket.AF_INET6: b"\x04"}

# If the given destination address is an IP address, we'll
        # use the IP address request even if remote resolving was specified.
        # Detect whether the address is IPv4/6 directly.
        for family in (socket.AF_INET, socket.AF_INET6):
            try:
                addr_bytes = socket.inet_pton(family, host)
                file.write(family_to_byte[family] + addr_bytes)
                host = socket.inet_ntop(family, addr_bytes)
                file.write(struct.pack(">H", port))
                return host, port
            except socket.error:
                continue

# Well it's not an IP number, so it's probably a DNS name.
        if rdns:
            # Resolve remotely
            host_bytes = host.encode('idna')
            file.write(b"\x03" + chr(len(host_bytes)).encode() + host_bytes)
        else:
            # Resolve locally
            addresses = socket.getaddrinfo(host, port, socket.AF_UNSPEC, socket.SOCK_STREAM, socket.IPPROTO_TCP, socket.AI_ADDRCONFIG)
            # We can't really work out what IP is reachable, so just pick the
            # first.
            target_addr = addresses[0]
            family = target_addr[0]
            host = target_addr[4][0]

addr_bytes = socket.inet_pton(family, host)
            file.write(family_to_byte[family] + addr_bytes)
            host = socket.inet_ntop(family, addr_bytes)
        file.write(struct.pack(">H", port))
        return host, port

def _read_SOCKS5_address(self, file):
        atyp = self._readall(file, 1)
        if atyp == b"\x01":
            addr = socket.inet_ntoa(self._readall(file, 4))
        elif atyp == b"\x03":
            length = self._readall(file, 1)
            addr = self._readall(file, ord(length))
        elif atyp == b"\x04":
            addr = socket.inet_ntop(socket.AF_INET6, self._readall(file, 16))
        else:
            raise GeneralProxyError("SOCKS5 proxy server sent invalid data")

port = struct.unpack(">H", self._readall(file, 2))[0]
        return addr, port

def _negotiate_SOCKS4(self, dest_addr, dest_port):
        """
        Negotiates a connection through a SOCKS4 server.
        """
        proxy_type, addr, port, rdns, username, password = self.proxy

writer = self.makefile("wb")
        reader = self.makefile("rb", 0)  # buffering=0 renamed in Python 3
        try:
            # Check if the destination address provided is an IP address
            remote_resolve = False
            try:
                addr_bytes = socket.inet_aton(dest_addr)
            except socket.error:
                # It's a DNS name. Check where it should be resolved.
                if rdns:
                    addr_bytes = b"\x00\x00\x00\x01"
                    remote_resolve = True
                else:
                    addr_bytes = socket.inet_aton(socket.gethostbyname(dest_addr))

# Construct the request packet
            writer.write(struct.pack(">BBH", 0x04, 0x01, dest_port))
            writer.write(addr_bytes)

# The username parameter is considered userid for SOCKS4
            if username:
                writer.write(username)
            writer.write(b"\x00")

# 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 remote_resolve:
                writer.write(dest_addr.encode('idna') + b"\x00")
            writer.flush()

# Get the response from the server
            resp = self._readall(reader, 8)
            if resp[0:1] != b"\x00":
                # Bad data
                raise GeneralProxyError("SOCKS4 proxy server sent invalid data")

status = ord(resp[1:2])
            if status != 0x5A:
                # Connection failed: server returned an error
                error = SOCKS4_ERRORS.get(status, "Unknown error")
                raise SOCKS4Error("{0:#04x}: {1}".format(status, error))

# Get the bound address/port
            self.proxy_sockname = (socket.inet_ntoa(resp[4:]), struct.unpack(">H", resp[2:4])[0])
            if remote_resolve:
                self.proxy_peername = socket.inet_ntoa(addr_bytes), dest_port
            else:
                self.proxy_peername = dest_addr, dest_port
        finally:
            reader.close()
            writer.close()

def _negotiate_HTTP(self, dest_addr, dest_port):
        """
        Negotiates a connection through an HTTP server.
        NOTE: This currently only supports HTTP CONNECT-style proxies.
        """
        proxy_type, addr, port, rdns, username, password = self.proxy

# If we need to resolve locally, we do this now
        addr = dest_addr if rdns else socket.gethostbyname(dest_addr)

http_headers = [
            b"CONNECT " + addr.encode('idna') + b":" + str(dest_port).encode() + b" HTTP/1.1",
            b"Host: " + dest_addr.encode('idna')
        ]

if username and password:
            http_headers.append(b"Proxy-Authorization: basic " + b64encode(username + b":" + password))

http_headers.append(b"\r\n")

self.sendall(b"\r\n".join(http_headers))

# We just need the first line to check if the connection was successful
        fobj = self.makefile()
        status_line = fobj.readline()
        fobj.close()

if not status_line:
            raise GeneralProxyError("Connection closed unexpectedly")

try:
            proto, status_code, status_msg = status_line.split(" ", 2)
        except ValueError:
            raise GeneralProxyError("HTTP proxy server sent invalid response")

if not proto.startswith("HTTP/"):
            raise GeneralProxyError("Proxy server does not appear to be an HTTP proxy")

try:
            status_code = int(status_code)
        except ValueError:
            raise HTTPError("HTTP proxy server did not return a valid HTTP status")

if status_code != 200:
            error = "{0}: {1}".format(status_code, status_msg)
            if status_code in (400, 403, 405):
                # It's likely that the HTTP proxy server does not support the CONNECT tunneling method
                error += ("\n[*] Note: The HTTP proxy server may not be supported by PySocks"
                          " (must be a CONNECT tunnel proxy)")
            raise HTTPError(error)

self.proxy_sockname = (b"0.0.0.0", 0)
        self.proxy_peername = addr, dest_port

_proxy_negotiators = {
                           SOCKS4: _negotiate_SOCKS4,
                           SOCKS5: _negotiate_SOCKS5,
                           HTTP: _negotiate_HTTP
                         }

def connect(self, dest_pair):
        """
        Connects to the specified destination through a proxy.
        Uses the same API as socket's connect().
        To select the proxy server, use set_proxy().

dest_pair - 2-tuple of (IP/hostname, port).
        """
        if len(dest_pair) != 2 or dest_pair[0].startswith("["):
            # Probably IPv6, not supported -- raise an error, and hope
            # Happy Eyeballs (RFC6555) makes sure at least the IPv4
            # connection works...
            raise socket.error("PySocks doesn't support IPv6")

dest_addr, dest_port = dest_pair

if self.type == socket.SOCK_DGRAM:
            if not self._proxyconn:
                self.bind(("", 0))
            dest_addr = socket.gethostbyname(dest_addr)

# If the host address is INADDR_ANY or similar, reset the peer
            # address so that packets are received from any peer
            if dest_addr == "0.0.0.0" and not dest_port:
                self.proxy_peername = None
            else:
                self.proxy_peername = (dest_addr, dest_port)
            return

proxy_type, proxy_addr, proxy_port, rdns, username, password = self.proxy

# Do a minimal input check first
        if (not isinstance(dest_pair, (list, tuple))
                or len(dest_pair) != 2
                or not dest_addr
                or not isinstance(dest_port, int)):
            raise GeneralProxyError("Invalid destination-connection (host, port) pair")

if proxy_type is None:
            # Treat like regular socket object
            self.proxy_peername = dest_pair
            _BaseSocket.connect(self, (dest_addr, dest_port))
            return

proxy_addr = self._proxy_addr()

try:
            # Initial connection to proxy server
            _BaseSocket.connect(self, proxy_addr)

except socket.error as error:
            # Error while connecting to proxy
            self.close()
            proxy_addr, proxy_port = proxy_addr
            proxy_server = "{0}:{1}".format(proxy_addr, proxy_port)
            printable_type = PRINTABLE_PROXY_TYPES[proxy_type]

msg = "Error connecting to {0} proxy {1}".format(printable_type,
                                                           proxy_server)
            raise ProxyConnectionError(msg, error)

else:
            # Connected to proxy server, now negotiate
            try:
                # Calls negotiate_{SOCKS4, SOCKS5, HTTP}
                negotiate = self._proxy_negotiators[proxy_type]
                negotiate(self, dest_addr, dest_port)
            except socket.error as error:
                # Wrap socket errors
                self.close()
                raise GeneralProxyError("Socket error", error)
            except ProxyError:
                # Protocol error while negotiating with proxy
                self.close()
                raise

def _proxy_addr(self):
        """
        Return proxy address to connect to as tuple object
        """
        proxy_type, proxy_addr, proxy_port, rdns, username, password = self.proxy
        proxy_port = proxy_port or DEFAULT_PORTS.get(proxy_type)
        if not proxy_port:
            raise GeneralProxyError("Invalid proxy type")
        return proxy_addr, proxy_port

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:24:07
..	dir	-	root/linksafe	drwxr-xr-x	2024-04-17 05:55:22
Babel-2.9.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:41
Jinja2-3.0.3-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
Mako-1.1.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:56
PyJWT-2.1.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
__pycache__	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:24:07
_distutils_hack	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:32:04
_pytest	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:19:41
aiosignal	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:29
aiosignal-1.2.0a0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:29
alembic	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:02
alembic-0.8.3-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:02
appdirs-1.4.3-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:29
args-0.1.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:31
astroid	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:09:08
astroid-2.2.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:09:08
async_timeout	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:32
async_timeout-4.0.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:32
attr	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
attrs-21.2.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
babel	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:41
beautifulsoup4-4.5.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:20
bs4	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:20
certifi	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
certifi-2018.4.16-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
chardet	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
chardet-3.0.4-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
charset_normalizer	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:33
charset_normalizer-2.0.12-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:33
clint	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:36
clint-0.5.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:36
clquota	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:59
clselect	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:59
clselector	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:59
colorama	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:35
colorama-0.3.7-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:35
cssselect	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:22:55
cssselect-0.9.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:22:55
ddt-1.1.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:22:56
distlib	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:22:57
docopt-0.6.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:39
docutils	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:22:59
dodgy	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:38
dodgy-0.1.9-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:38
filelock	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:03
filelock-0.0.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:03
funcsigs	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:42
funcsigs-1.0.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:42
future	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:09
future-0.17.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:09
html5lib	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:00
html5lib-1.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:00
idna	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
idna-2.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
importlib_metadata	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
importlib_metadata-0.0.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
isort	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:44
isort-4.2.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:44
jinja2	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
jsonschema	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
jsonschema-3.2.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
jwt	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
libfuturize	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:09
libpasteurize	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:09
lvemanager	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:59
lvestats	dir	-	root/root	drwxr-xr-x	2024-07-05 06:24:01
mako	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:56
mccabe-0.6.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:24:28
mock	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:09
mock-3.0.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:09
nose	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:57
nose-1.3.7-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:57
packaging	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:08
packaging-16.8-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:08
past	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:09
pbr	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:05
pbr-1.8.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:05
pep8_naming-0.4.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:07
pip	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:08
pip-20.2.4.dist-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:08
pkg_resources	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:32:04
pkginfo	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:08
pkginfo-1.3.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:08
platformdirs	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:13
platformdirs-0.0.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:13
prettytable-0.7.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:14
prometheus_client	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:06
prometheus_client-0.8.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:26:06
prospector	dir	-	root/root	drwxr-xr-x	2024-07-05 06:21:05
prospector-1.1.7-py3.7.egg-info	dir	-	root/root	drwxr-xr-x	2024-07-05 06:21:05
py	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:17:50
py-1.4.34-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:17:50
pycodestyle-2.0.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:10
pydocstyle	dir	-	root/root	drwxr-xr-x	2024-07-05 06:16:16
pydocstyle-2.1.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:16
pyfakefs	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:15
pyfakefs-3.5.8-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:15
pyflakes	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:11
pyflakes-2.2.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:11
pylint	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:45
pylint-2.3.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:45
pylint_celery	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:49
pylint_celery-0.3-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:49
pylint_common	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:50
pylint_common-0.2.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:50
pylint_django	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:52
pylint_django-2.0.10-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:52
pylint_flask	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:54
pylint_plugin_utils	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:48
pylint_plugin_utils-0.5-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:48
pyparsing	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:12
pyparsing-3.0.9.dist-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:12
pytest-3.1.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:19:41
python_editor-0.4-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:15:39
pytz	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:41
pytz-2017.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:41
raven	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:11
raven-6.3.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:11
requests	dir	-	root/root	drwxr-xr-x	2024-06-01 03:34:41
requests-2.26.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:41
requests_toolbelt	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:17:48
requests_toolbelt-0.7.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:17:48
requirements_detector	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:14:56
requirements_detector-0.6-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:14:56
schema-0.7.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
sentry_sdk	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:18
sentry_sdk-1.3.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:18
setoptconf	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:24:50
setoptconf-0.3.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-02 05:24:50
setuptools	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:32:04
setuptools-58.3.0.dist-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:32:04
setuptools_git	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:20
setuptools_git-1.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:20
setuptools_scm	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:21
setuptools_scm-3.2.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:21
six-1.15.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:06
snowballstemmer	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:14
ssa	dir	-	root/root	drwxr-xr-x	2024-07-05 06:24:07
svgwrite	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:07
svgwrite-1.3.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:21:07
tap	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:23
tap.py-2.6.2-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:22
testfixtures	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:25
testfixtures-4.13.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:25
twine	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:19:43
twine-1.8.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:19:43
typing_extensions-3.7.4.3-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
urllib3	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
urllib3-1.26.6-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:40
virtualenv	dir	-	root/root	drwxr-xr-x	2024-06-01 03:38:23
virtualenv-20.13.0-py3.7.egg-info	dir	-	root/root	drwxr-xr-x	2024-06-01 03:38:23
webencodings	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:21
webencodings-0.5.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:16:21
wheel	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:26
wheel-0.31.1-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-07-05 06:23:26
zipp-0.0.0-py3.7.egg-info	dir	-	root/linksafe	drwxr-xr-x	2024-06-01 03:34:44
PySocks-1.5.7-py3.7.egg-info	text/plain	322 B	root/linksafe	-rw-r--r--	2023-11-14 02:18:47
appdirs.py	text/plain	24.1 KB	root/linksafe	-rw-r--r--	2024-06-04 02:13:28
args.py	text/x-script.python	9.1 KB	root/linksafe	-rw-r--r--	2012-05-08 05:41:40
ddt.py	text/x-script.python	8.06 KB	root/linksafe	-rw-r--r--	2016-10-07 07:13:50
distlib-0.3.4-py3.7.egg-info	text/plain	1.13 KB	root/linksafe	-rw-r--r--	2023-11-14 12:16:42
distutils-precedence.pth	text/plain	152 B	root/linksafe	-rw-r--r--	2023-11-13 09:39:28
docopt.py	text/plain	19.48 KB	root/linksafe	-rw-r--r--	2014-06-16 11:14:32
docutils-0.14-py3.7.egg-info	text/plain	2.31 KB	root/linksafe	-rw-r--r--	2024-06-04 03:12:53
editor.py	text/x-script.python	2.49 KB	root/linksafe	-rwxr-xr-x	2019-12-10 05:53:59
mccabe.py	text/plain	10.44 KB	root/linksafe	-rw-r--r--	2017-01-26 10:10:14
pep8ext_naming.py	text/x-script.python	10.9 KB	root/linksafe	-rw-r--r--	2016-06-26 12:06:53
prettytable.py	text/x-script.python	52.93 KB	root/linksafe	-rw-r--r--	2013-04-06 11:44:06
pycodestyle.py	text/x-script.python	81.7 KB	root/linksafe	-rw-r--r--	2024-06-04 03:54:20
pylint_flask-0.6-py3.7.egg-info	text/plain	844 B	root/linksafe	-rw-r--r--	2024-06-04 04:30:07
pytest.py	text/plain	1.76 KB	root/linksafe	-rw-r--r--	2024-06-04 04:40:42
schema.py	text/plain	28.51 KB	root/linksafe	-rw-r--r--	2019-09-09 05:39:33
six.py	text/x-script.python	33.36 KB	root/linksafe	-rw-r--r--	2020-05-21 03:25:33
snowballstemmer-1.2.1-py3.7.egg-info	text/plain	2.19 KB	root/linksafe	-rw-r--r--	2024-06-04 05:04:08
socks.py	text/plain	29.25 KB	root/linksafe	-rw-r--r--	2016-05-21 09:54:42
sockshandler.py	text/x-script.python	2.84 KB	root/linksafe	-rw-r--r--	2016-05-21 09:54:42
typing_extensions.py	text/x-script.python	81.76 KB	root/linksafe	-rw-r--r--	2020-07-07 10:29:25
zipp.py	text/x-script.python	8.23 KB	root/linksafe	-rw-r--r--	2021-12-31 12:01:49