120 lines
3.3 KiB
Python
Executable File

#!/usr/bin/env python
import sys
import os
import subprocess
import socket
import urllib
def is_scp():
return os.path.basename(sys.argv[0]) in ("scp", "qscp")
def find_scp_hostname(parms):
overridden_host = None
if len(parms) > 1 and parms[0] == "--vmname":
overridden_host = parms[1]
parms = parms[2:]
if len(parms) > 1 and parms[0] == "--management-proxy":
proxy = parms[1]
parms = parms[2:]
overridden_host = overridden_host + ".__%s__" % proxy
overridden_host = overridden_host + ".__qubes__"
host = None
while host is None:
if parms[-1].startswith("-"):
parms = parms[:-1]
continue
if any(parms[-2].startswith(x)
for x in ["-c", "-F", "-i", "-l", "-o", "-P", "-S"]):
parms = parms[:-2]
host = parms[-1]
host, _ = host.split(":", 1)
if overridden_host:
parms[-1] = overridden_host + parms[-1][len(host):]
return overridden_host if overridden_host else host, parms
def find_hostname_and_command(parms):
host = None
overridden_host = None
if len(parms) > 1 and parms[0] == "--vmname":
overridden_host = parms[1]
parms = parms[2:]
if len(parms) > 1 and parms[0] == "--management-proxy":
proxy = parms[1]
parms = parms[2:]
overridden_host = overridden_host + ".__%s__" % proxy
overridden_host = overridden_host + ".__qubes__"
rest = parms
while True:
if not rest:
break
if rest[0] == "--":
if host is None:
_, host, rest = rest[0], rest[1], rest[2:]
else:
_, rest = rest[0], rest[1:]
break
elif rest[0].startswith("-o") and len(rest[0]) > 2:
_, rest = rest[0], rest[1:]
elif rest[0].startswith("-o"):
_, rest = rest[0:1], rest[2:]
elif rest[0].startswith("-"):
_, rest = rest[0], rest[1:]
else:
if host is None:
host, rest = rest[0], rest[1:]
else:
break
host, port = urllib.splitport(host)
return overridden_host if overridden_host else host, rest
def is_qubes_host(host):
return host.endswith(".__qubes__")
def get_vmname_and_management_proxy(hostname):
host = hostname
host = host[:-len(".__qubes__")]
if host.endswith("__"):
host, proxy, _ = host.rsplit("__", 2)
if not host.endswith("."):
raise ValueError("invalid proxied host %r" % hostname)
return host[:-1], proxy
return host, None
parms = sys.argv[1:]
# SCP execution path.
if is_scp():
host, rest = find_scp_hostname(parms)
if not is_qubes_host(host):
os.execv("/usr/bin/scp", ["/usr/bin/scp"] + parms)
path_to_this_file = os.path.dirname(__file__)
path_to_ssh = os.path.join(path_to_this_file, "qssh")
scmd = ["/usr/bin/scp"] + ["-S", path_to_ssh] + rest
os.execvp(scmd[0], scmd)
host, rest = find_hostname_and_command(parms)
# SSH execution path.
if not is_qubes_host(host):
os.execv("/usr/bin/ssh", ["/usr/bin/ssh"] + parms)
path_to_bombshell = os.path.abspath(os.path.join(os.path.dirname(__file__), "bombshell-client"))
vmname, proxy = get_vmname_and_management_proxy(host)
if proxy:
assert 0, "While connecting to %s (VM name %s): management proxy not supported yet" % (host, vmname)
cmd = [
path_to_bombshell,
vmname,
] + ["sh", "-c", " ".join(rest)]
os.execvp(cmd[0], cmd)