78 lines
2.7 KiB
Python
Executable File
78 lines
2.7 KiB
Python
Executable File
#!/usr/bin/python
|
|
import sys
|
|
import os
|
|
import subprocess
|
|
|
|
POLICY_FILE_DIR="/etc/qubes_rpc/policy"
|
|
QREXEC_CLIENT="/usr/lib/qubes/qrexec_client"
|
|
|
|
def read_policy_file(exec_index):
|
|
policy=list()
|
|
f = open(POLICY_FILE_DIR+"/"+exec_index)
|
|
for iter in f.readlines():
|
|
policy.append(iter.split())
|
|
f.close()
|
|
return policy
|
|
|
|
def is_match(item, config_term):
|
|
return (item is not "dom0" and config_term == "anyvm") or item == config_term
|
|
|
|
def apply_policy(policy, domain, target):
|
|
for iter in policy:
|
|
if len(iter) < 3:
|
|
continue
|
|
if not is_match(domain, iter[0]):
|
|
continue
|
|
if not is_match(target, iter[1]):
|
|
continue
|
|
ret=iter[2].split("=")
|
|
if len(ret)==1:
|
|
return (ret[0], None)
|
|
else:
|
|
return (ret[0], ret[1])
|
|
return (None, None)
|
|
|
|
def do_execute(domain, target, exec_index, process_ident):
|
|
if target == "dispvm":
|
|
cmd = "/usr/lib/qubes/qfile-daemon-dvm " + exec_index + " " + domain
|
|
else:
|
|
cmd= "qvm-run -uroot -q -a --pass_io "+target
|
|
cmd+=" '/usr/lib/qubes/qubes_rpc_multiplexer "+exec_index + " " + domain + "'"
|
|
os.execl(QREXEC_CLIENT, "qrexec_client", "-d", domain, "-l", cmd, "-c", process_ident)
|
|
|
|
def confirm_execution(domain, target, exec_index):
|
|
text = "Do you allow domain \"" +domain + "\" to execute " + exec_index
|
|
text+= " operation on the domain \"" + target +"\"?"
|
|
retcode = subprocess.call(["/usr/bin/zenity", "--question", "--text", text])
|
|
return retcode==0
|
|
|
|
def policy_editor(domain, target, exec_index):
|
|
text = "Policy editor not yet implemented. Please add a line in the form \""
|
|
text+= domain + " " + target + "action_to_take\""
|
|
text+= " to /etc/qubes_rpc/policy/" + exec_index +" file in dom0, then close this info."
|
|
subprocess.call(["/usr/bin/zenity", "--info", "--text", text])
|
|
|
|
def main():
|
|
domain=sys.argv[1]
|
|
target=sys.argv[2]
|
|
exec_index=sys.argv[3]
|
|
process_ident=sys.argv[4]
|
|
|
|
action = None
|
|
while action is None:
|
|
policy = read_policy_file(exec_index)
|
|
(action, params) = apply_policy(policy, domain, target)
|
|
if action is None:
|
|
policy_editor(domain, target, exec_index)
|
|
if action == "allow":
|
|
do_execute(domain, target, exec_index, process_ident)
|
|
elif action == "divert":
|
|
do_execute(domain, params, exec_index, process_ident)
|
|
elif action == "ask":
|
|
if confirm_execution(domain, target, exec_index):
|
|
do_execute(domain, target, exec_index, process_ident)
|
|
print >> sys.stderr, "Rpc denied:", domain, target, exec_index
|
|
os.execl(QREXEC_CLIENT, "qrexec_client", "-d", domain, "-l", "/bin/false", "-c", process_ident)
|
|
|
|
main()
|
|
|