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https://github.com/sshuttle/sshuttle.git
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windows: add --remote-shell option to select cmd/powershell
This commit is contained in:
nom3ad
Brian May
parent
dff6950c4c
commit
bac2a6b0c7
@ -181,6 +181,11 @@ Options
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in a non-standard location or you want to provide extra
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options to the ssh command, for example, ``-e 'ssh -v'``.
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.. option:: --remote-shell
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For Windows targets, specify configured remote shell program alternative to defacto posix shell.
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It would be either ``cmd`` or ``powershell`` unless something like git-bash is in use.
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.. option:: --no-cmd-delimiter
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Do not add a double dash (--) delimiter before invoking Python on
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@ -211,8 +211,8 @@ class FirewallClient:
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self.auto_nets = []
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argv0 = sys.argv[0]
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# argv0 is either be a normal python file or an executable.
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# After installed as a package, sshuttle command points to an .exe in Windows and python shebang script elsewhere.
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# argv0 is either be a normal Python file or an executable.
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# After installed as a package, sshuttle command points to an .exe in Windows and Python shebang script elsewhere.
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argvbase = (([sys.executable, sys.argv[0]] if argv0.endswith('.py') else [argv0]) +
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['-v'] * (helpers.verbose or 0) +
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['--method', method_name] +
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@ -591,7 +591,7 @@ def ondns(listener, method, mux, handlers):
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def _main(tcp_listener, udp_listener, fw, ssh_cmd, remotename,
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python, latency_control, latency_buffer_size,
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dns_listener, seed_hosts, auto_hosts, auto_nets, daemon,
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to_nameserver, add_cmd_delimiter):
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to_nameserver, add_cmd_delimiter, remote_shell):
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helpers.logprefix = 'c : '
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debug1('Starting client with Python version %s'
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@ -607,6 +607,7 @@ def _main(tcp_listener, udp_listener, fw, ssh_cmd, remotename,
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ssh_cmd, remotename, python,
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stderr=ssyslog._p and ssyslog._p.stdin,
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add_cmd_delimiter=add_cmd_delimiter,
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remote_shell=remote_shell,
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options=dict(latency_control=latency_control,
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latency_buffer_size=latency_buffer_size,
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auto_hosts=auto_hosts,
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@ -809,7 +810,7 @@ def main(listenip_v6, listenip_v4,
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latency_buffer_size, dns, nslist,
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method_name, seed_hosts, auto_hosts, auto_nets,
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subnets_include, subnets_exclude, daemon, to_nameserver, pidfile,
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user, group, sudo_pythonpath, add_cmd_delimiter, tmark):
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user, group, sudo_pythonpath, add_cmd_delimiter, remote_shell, tmark):
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if not remotename:
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raise Fatal("You must use -r/--remote to specify a remote "
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@ -1158,7 +1159,7 @@ def main(listenip_v6, listenip_v4,
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return _main(tcp_listener, udp_listener, fw, ssh_cmd, remotename,
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python, latency_control, latency_buffer_size,
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dns_listener, seed_hosts, auto_hosts, auto_nets,
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daemon, to_nameserver, add_cmd_delimiter)
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daemon, to_nameserver, add_cmd_delimiter, remote_shell)
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finally:
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try:
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if daemon:
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@ -116,6 +116,7 @@ def main():
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opt.group,
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opt.sudo_pythonpath,
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opt.add_cmd_delimiter,
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opt.remote_shell,
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opt.tmark)
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if return_code == 0:
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@ -315,6 +315,14 @@ parser.add_argument(
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do not add a double dash before the python command
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"""
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)
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parser.add_argument(
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"--remote-shell",
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metavar="PROGRAM",
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help="""
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alternate remote shell program instead of defacto posix shell.
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For Windows targets it would be either `cmd` or `powershell` unless something like git-bash is in use.
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"""
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)
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parser.add_argument(
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"--seed-hosts",
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metavar="HOSTNAME[,HOSTNAME]",
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101
sshuttle/ssh.py
101
sshuttle/ssh.py
@ -84,7 +84,7 @@ def parse_hostport(rhostport):
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return username, password, port, host
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def connect(ssh_cmd, rhostport, python, stderr, add_cmd_delimiter, options):
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def connect(ssh_cmd, rhostport, python, stderr, add_cmd_delimiter, remote_shell, options):
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username, password, port, host = parse_hostport(rhostport)
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if username:
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rhost = "{}@{}".format(username, host)
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@ -134,52 +134,59 @@ def connect(ssh_cmd, rhostport, python, stderr, add_cmd_delimiter, options):
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portl = ["-p", str(port)]
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else:
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portl = []
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if python:
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pycmd = '"%s" -c "%s"' % (python, pyscript)
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else:
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# By default, we run the following code in a shell.
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# However, with restricted shells and other unusual
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# situations, there can be trouble. See the RESTRICTED
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# SHELL section in "man bash" for more information. The
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# code makes many assumptions:
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#
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# (1) That /bin/sh exists and that we can call it.
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# Restricted shells often do *not* allow you to run
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# programs specified with an absolute path like /bin/sh.
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# Either way, if there is trouble with this, it should
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# return error code 127.
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#
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# (2) python3 or python exists in the PATH and is
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# executable. If they aren't, then exec won't work (see (4)
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# below).
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#
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# (3) In /bin/sh, that we can redirect stderr in order to
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# hide the version that "python3 -V" might print (some
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# restricted shells don't allow redirection, see
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# RESTRICTED SHELL section in 'man bash'). However, if we
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# are in a restricted shell, we'd likely have trouble with
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# assumption (1) above.
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#
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# (4) The 'exec' command should work except if we failed
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# to exec python because it doesn't exist or isn't
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# executable OR if exec isn't allowed (some restricted
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# shells don't allow exec). If the exec succeeded, it will
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# not return and not get to the "exit 97" command. If exec
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# does return, we exit with code 97.
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#
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# Specifying the exact python program to run with --python
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# avoids many of the issues above. However, if
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# you have a restricted shell on remote, you may only be
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# able to run python if it is in your PATH (and you can't
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# run programs specified with an absolute path). In that
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# case, sshuttle might not work at all since it is not
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# possible to run python on the remote machine---even if
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# it is present.
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devnull = '/dev/null'
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pycmd = ("P=python3; $P -V 2>%s || P=python; "
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"exec \"$P\" -c %s; exit 97") % \
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(devnull, quote(pyscript))
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pycmd = ("/bin/sh -c {}".format(quote(pycmd)))
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if remote_shell == "cmd":
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pycmd = '"%s" -c "%s"' % (python or 'python', pyscript)
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elif remote_shell == "powershell":
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for c in ('\'', ' ', ';', '(', ')', ','):
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pyscript = pyscript.replace(c, '`' + c)
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pycmd = '%s -c %s' % (python or 'python', pyscript)
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else: # posix shell expected
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if python:
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pycmd = '"%s" -c "%s"' % (python, pyscript)
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else:
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# By default, we run the following code in a shell.
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# However, with restricted shells and other unusual
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# situations, there can be trouble. See the RESTRICTED
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# SHELL section in "man bash" for more information. The
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# code makes many assumptions:
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#
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# (1) That /bin/sh exists and that we can call it.
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# Restricted shells often do *not* allow you to run
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# programs specified with an absolute path like /bin/sh.
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# Either way, if there is trouble with this, it should
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# return error code 127.
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#
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# (2) python3 or python exists in the PATH and is
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# executable. If they aren't, then exec won't work (see (4)
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# below).
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#
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# (3) In /bin/sh, that we can redirect stderr in order to
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# hide the version that "python3 -V" might print (some
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# restricted shells don't allow redirection, see
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# RESTRICTED SHELL section in 'man bash'). However, if we
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# are in a restricted shell, we'd likely have trouble with
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# assumption (1) above.
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#
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# (4) The 'exec' command should work except if we failed
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# to exec python because it doesn't exist or isn't
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# executable OR if exec isn't allowed (some restricted
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# shells don't allow exec). If the exec succeeded, it will
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# not return and not get to the "exit 97" command. If exec
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# does return, we exit with code 97.
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#
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# Specifying the exact python program to run with --python
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# avoids many of the issues above. However, if
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# you have a restricted shell on remote, you may only be
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# able to run python if it is in your PATH (and you can't
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# run programs specified with an absolute path). In that
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# case, sshuttle might not work at all since it is not
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# possible to run python on the remote machine---even if
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# it is present.
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devnull = '/dev/null'
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pycmd = ("P=python3; $P -V 2>%s || P=python; "
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"exec \"$P\" -c %s; exit 97") % \
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(devnull, quote(pyscript))
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pycmd = ("/bin/sh -c {}".format(quote(pycmd)))
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if password is not None:
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os.environ['SSHPASS'] = str(password)
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