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# Xlib.support.unix_connect -- Unix-type display connection functions
#
# Copyright (C) 2000,2002 Peter Liljenberg <petli@ctrl-c.liu.se>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import re
import string
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'^([-a-zA-Z0-9._/]*):([0-9]+)(\.([0-9]+))?$')
else:
display_re = re.compile(r'^([-a-zA-Z0-9._]*):([0-9]+)(\.([0-9]+))?$')
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
host = m.group(1)
dno = int(m.group(2))
screen = m.group(4)
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('/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:
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect('/tmp/.X11-unix/X%d' % dno)
except socket.error, 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('/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 = string.split(sock.getpeername()[0], '.')
addr = string.join(map(lambda x: chr(int(x)), octets), '')
else:
family = xauth.FamilyLocal
addr = socket.gethostname()
au = xauth.Xauthority()
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 == '\x7f\x00\x00\x01':
family = xauth.FamilyLocal
addr = socket.gethostname()
else:
return '', ''
def old_get_auth(sock, dname, host, dno):
# Find authorization cookie
auth_name = auth_data = ''
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 = string.split(data, '\n')
if len(lines) >= 1:
parts = string.split(lines[0], None, 2)
if len(parts) == 3:
auth_name = parts[1]
hexauth = parts[2]
auth = ''
# Translate hexcode into binary
for i in range(0, len(hexauth), 2):
auth = auth + chr(string.atoi(hexauth[i:i+2], 16))
auth_data = auth
except os.error:
pass
return auth_name, auth_data
get_auth = new_get_auth
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