mirror of
https://github.com/sshuttle/sshuttle.git
synced 2024-11-22 16:03:57 +01:00
8fe3592be3
Instead, grab our source code, send it over the link, and have python eval it and then start the server.py main() function. Strangely, there's now *less* horrible stuff in ssh.py, because we no longer have to munge around with the PATH environment variable. And this significantly reduces the setup required to get sshuttle going. Based on a suggestion from Wayne Scott.
64 lines
1.7 KiB
Python
64 lines
1.7 KiB
Python
import sys, os, re, subprocess, socket, zlib
|
|
import helpers
|
|
from helpers import *
|
|
|
|
|
|
def readfile(name):
|
|
basedir = os.path.dirname(os.path.abspath(sys.argv[0]))
|
|
fullname = os.path.join(basedir, name)
|
|
return open(fullname, 'rb').read()
|
|
|
|
|
|
def empackage(z, filename):
|
|
content = z.compress(readfile(filename))
|
|
content += z.flush(zlib.Z_SYNC_FLUSH)
|
|
return '%s\n%d\n%s' % (filename,len(content), content)
|
|
|
|
|
|
def connect(rhostport):
|
|
main_exe = sys.argv[0]
|
|
l = (rhostport or '').split(':', 1)
|
|
rhost = l[0]
|
|
portl = []
|
|
if len(l) > 1:
|
|
portl = ['-p', str(int(l[1]))]
|
|
|
|
if rhost == '-':
|
|
rhost = None
|
|
|
|
z = zlib.compressobj(1)
|
|
content = readfile('assembler.py')
|
|
content2 = (empackage(z, 'helpers.py') +
|
|
empackage(z, 'ssnet.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:
|
|
argv = ['python', '-c', pyscript]
|
|
else:
|
|
argv = ['ssh'] + portl + [rhost, '--', "python -c '%s'" % pyscript]
|
|
(s1,s2) = socket.socketpair()
|
|
def setup():
|
|
# runs in the child process
|
|
s2.close()
|
|
os.setsid()
|
|
s1a,s1b = os.dup(s1.fileno()), os.dup(s1.fileno())
|
|
s1.close()
|
|
debug2('executing: %r\n' % argv)
|
|
p = subprocess.Popen(argv, stdin=s1a, stdout=s1b, preexec_fn=setup,
|
|
close_fds=True)
|
|
os.close(s1a)
|
|
os.close(s1b)
|
|
s2.sendall(content)
|
|
s2.sendall(content2)
|
|
return p, s2
|