mirror of
https://github.com/sshuttle/sshuttle.git
synced 2024-11-28 19:03:26 +01:00
107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
import sys, os, re, socket, zlib
|
|
import compat.ssubprocess as ssubprocess
|
|
import helpers
|
|
from helpers import *
|
|
|
|
|
|
def readfile(name):
|
|
basedir = os.path.dirname(os.path.abspath(sys.argv[0]))
|
|
path = [basedir] + sys.path
|
|
for d in path:
|
|
fullname = os.path.join(d, name)
|
|
if os.path.exists(fullname):
|
|
return open(fullname, 'rb').read()
|
|
raise Exception("can't find file %r in any of %r" % (name, path))
|
|
|
|
|
|
def empackage(z, filename, data=None):
|
|
(path,basename) = os.path.split(filename)
|
|
if not data:
|
|
data = readfile(filename)
|
|
content = z.compress(data)
|
|
content += z.flush(zlib.Z_SYNC_FLUSH)
|
|
return '%s\n%d\n%s' % (basename, len(content), content)
|
|
|
|
|
|
def connect(ssh_cmd, rhostport, python, stderr, options):
|
|
main_exe = sys.argv[0]
|
|
portl = []
|
|
|
|
rhostIsIPv6 = False
|
|
if (rhostport or '').count(':') > 1:
|
|
rhostIsIPv6 = True
|
|
if rhostport.count(']') or rhostport.count('['):
|
|
result = rhostport.split(']')
|
|
rhost = result[0].strip('[')
|
|
if len(result) > 1:
|
|
result[1] = result[1].strip(':')
|
|
if result[1] is not '':
|
|
portl = ['-p', str(int(result[1]))]
|
|
else: # can't disambiguate IPv6 colons and a port number. pass the hostname through.
|
|
rhost = rhostport
|
|
else: # IPv4
|
|
l = (rhostport or '').split(':', 1)
|
|
rhost = l[0]
|
|
if len(l) > 1:
|
|
portl = ['-p', str(int(l[1]))]
|
|
|
|
if rhost == '-':
|
|
rhost = None
|
|
|
|
ipv6flag = []
|
|
if rhostIsIPv6:
|
|
ipv6flag = ['-6']
|
|
|
|
z = zlib.compressobj(1)
|
|
content = readfile('assembler.py')
|
|
optdata = ''.join("%s=%r\n" % (k,v) for (k,v) in options.items())
|
|
content2 = (empackage(z, 'cmdline_options.py', optdata) +
|
|
empackage(z, 'helpers.py') +
|
|
empackage(z, 'compat/ssubprocess.py') +
|
|
empackage(z, 'ssnet.py') +
|
|
empackage(z, 'hostwatch.py') +
|
|
empackage(z, 'server.py') +
|
|
"\n")
|
|
|
|
pyscript = r"""
|
|
import sys;
|
|
skip_imports=1;
|
|
verbosity=%d;
|
|
exec compile(sys.stdin.read(%d), "assembler.py", "exec")
|
|
""" % (helpers.verbose or 0, len(content))
|
|
pyscript = re.sub(r'\s+', ' ', pyscript.strip())
|
|
|
|
|
|
if not rhost:
|
|
# ignore the --python argument when running locally; we already know
|
|
# which python version works.
|
|
argv = [sys.argv[1], '-c', pyscript]
|
|
else:
|
|
if ssh_cmd:
|
|
sshl = ssh_cmd.split(' ')
|
|
else:
|
|
sshl = ['ssh']
|
|
if python:
|
|
pycmd = "'%s' -c '%s'" % (python, pyscript)
|
|
else:
|
|
pycmd = ("P=python2; $P -V 2>/dev/null || P=python; "
|
|
"\"$P\" -c '%s'") % pyscript
|
|
argv = (sshl +
|
|
portl +
|
|
ipv6flag +
|
|
[rhost, '--', pycmd])
|
|
(s1,s2) = socket.socketpair()
|
|
def setup():
|
|
# runs in the child process
|
|
s2.close()
|
|
s1a,s1b = os.dup(s1.fileno()), os.dup(s1.fileno())
|
|
s1.close()
|
|
debug2('executing: %r\n' % argv)
|
|
p = ssubprocess.Popen(argv, stdin=s1a, stdout=s1b, preexec_fn=setup,
|
|
close_fds=True, stderr=stderr)
|
|
os.close(s1a)
|
|
os.close(s1b)
|
|
s2.sendall(content)
|
|
s2.sendall(content2)
|
|
return p, s2
|