/usr/lib/python3/dist-packages/Xlib/support/unix_connect.py is in python3-xlib 0.20-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | # Xlib.support.unix_connect -- Unix-type display connection functions
#
# Copyright (C) 2000,2002 Peter Liljenberg <petli@ctrl-c.liu.se>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1
# of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place,
# Suite 330,
# Boston, MA 02111-1307 USA
import re
import os
import platform
import socket
# FCNTL is deprecated from Python 2.2, so only import it if we doesn't
# get the names we need. Furthermore, FD_CLOEXEC seems to be missing
# in Python 2.2.
import fcntl
if hasattr(fcntl, 'F_SETFD'):
F_SETFD = fcntl.F_SETFD
if hasattr(fcntl, 'FD_CLOEXEC'):
FD_CLOEXEC = fcntl.FD_CLOEXEC
else:
FD_CLOEXEC = 1
else:
from FCNTL import F_SETFD, FD_CLOEXEC
from Xlib import error, xauth
uname = platform.uname()
if (uname[0] == 'Darwin') and ([int(x) for x in uname[2].split('.')] >= [9, 0]):
display_re = re.compile(r'^(?P<proto>)(?P<host>[-:a-zA-Z0-9._/]*):(?P<dno>[0-9]+)(\.(?P<screen>[0-9]+))?$')
else:
display_re = re.compile(r'^((?P<proto>tcp|unix)/)?(?P<host>[-:a-zA-Z0-9._]*):(?P<dno>[0-9]+)(\.(?P<screen>[0-9]+))?$')
def get_display(display):
# Use $DISPLAY if display isn't provided
if display is None:
display = os.environ.get('DISPLAY', '')
m = display_re.match(display)
if not m:
raise error.DisplayNameError(display)
name = display
protocol, host, dno, screen = m.group('proto', 'host', 'dno', 'screen')
if protocol == 'tcp':
# Host is mandatory when protocol is TCP.
if not host:
raise error.DisplayNameError(display)
elif protocol == 'unix':
# Clear host to force Unix socket connection.
host = ''
else:
# Special case: `unix:0.0` is equivalent to `:0.0`.
if host == 'unix':
host = ''
dno = int(dno)
if screen:
screen = int(screen)
else:
screen = 0
return name, host, dno, screen
def get_socket(dname, host, dno):
try:
# Darwin funky socket
if (uname[0] == 'Darwin') and host and host.startswith('/private/tmp/'):
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(dname)
# If hostname (or IP) is provided, use TCP socket
elif host:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, 6000 + dno))
# Else use Unix socket
else:
address = '/tmp/.X11-unix/X%d' % dno
if not os.path.exists(address):
# Use abstract address.
address = '\0' + address
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(address)
except socket.error as val:
raise error.DisplayConnectionError(dname, str(val))
# Make sure that the connection isn't inherited in child processes
fcntl.fcntl(s.fileno(), F_SETFD, FD_CLOEXEC)
return s
def new_get_auth(sock, dname, host, dno):
# Translate socket address into the xauth domain
if (uname[0] == 'Darwin') and host and host.startswith('/private/tmp/'):
family = xauth.FamilyLocal
addr = socket.gethostname()
elif host:
family = xauth.FamilyInternet
# Convert the prettyprinted IP number into 4-octet string.
# Sometimes these modules are too damn smart...
octets = sock.getpeername()[0].split('.')
addr = bytearray(int(x) for x in octets)
else:
family = xauth.FamilyLocal
addr = socket.gethostname().encode()
try:
au = xauth.Xauthority()
except error.XauthError:
return b'', b''
while 1:
try:
return au.get_best_auth(family, addr, dno)
except error.XNoAuthError:
pass
# We need to do this to handle ssh's X forwarding. It sets
# $DISPLAY to localhost:10, but stores the xauth cookie as if
# DISPLAY was :10. Hence, if localhost and not found, try
# again as a Unix socket.
if family == xauth.FamilyInternet and addr == b'\x7f\x00\x00\x01':
family = xauth.FamilyLocal
addr = socket.gethostname().encode()
else:
return b'', b''
def old_get_auth(sock, dname, host, dno):
# Find authorization cookie
auth_name = auth_data = b''
try:
# We could parse .Xauthority, but xauth is simpler
# although more inefficient
data = os.popen('xauth list %s 2>/dev/null' % dname).read()
# If there's a cookie, it is of the format
# DISPLAY SCHEME COOKIE
# We're interested in the two last parts for the
# connection establishment
lines = data.split('\n')
if len(lines) >= 1:
parts = lines[0].split(None, 2)
if len(parts) == 3:
auth_name = parts[1]
hexauth = parts[2]
auth = b''
# Translate hexcode into binary
for i in range(0, len(hexauth), 2):
auth = auth + chr(int(hexauth[i:i+2], 16))
auth_data = auth
except os.error:
pass
if not auth_data and host=='localhost':
# 127.0.0.1 counts as FamilyLocal, not FamilyInternet
# See Xtransutil.c:ConvertAddress.
# There might be more ways to spell 127.0.0.1 but
# 'localhost', yet this code fixes a the case of
# OpenSSH tunneling X.
return get_auth('unix:%d' % dno, 'unix', dno)
return auth_name, auth_data
get_auth = new_get_auth
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