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import time
from src import ModuleManager, utils
class Module(ModuleManager.BaseModule):
def _get_policy(self, server):
return server.get_setting("sts-policy", None)
def _set_policy(self, server, policy):
server.set_setting("sts-policy", policy)
def _remove_policy(self, server):
server.del_setting("sts-policy")
def _set_policy(self, server, port, duration, one_shot):
expiration = None
self._set_policy(server, {
"port": port,
"from": time.time()
"duration": duration,
"one-shot": one_shot})
def _change_duration(self, server, info):
duration = int(info["duration"])
if duration == 0:
self._remove_policy(server)
else:
port = event["server"].port
if "port" in info:
port = int(info["port"])
self._set_policy(server, port, duration, False)
@utils.hook("received.cap.ls")
def on_cap_ls(self, event):
has_sts = "sts" in event["capabilities"]
if "sts" in event["capabilities"]:
info = utils.parse.keyvalue(event["capabilities"]["sts"],
delimiter=",")
if not event["server"].tls:
self._set_policy(event["server"], int(info["port"]),
None, True)
event["server"].disconnect()
else:
self._change_duration(event["server"], info)
@utils.hook("received.cap.new")
def on_cap_new(self, event):
if "sts" in event["capabilities"] and event["server"].tls:
info = utils.parse.keyvalue(event["capabilities"]["sts"],
delimiter=",")
if event["server"].tls:
self._change_duration(event["server"], info)
@utils.hook("new.server")
def new_server(self, event):
sts_policy = self._get_policy(event["server"])
if sts_policy:
if sts_policy["one-shot"]:
self._remove_policy(event["server"])
if not event["server"].tls:
expiration = sts_policy["from"]+sts_policy
if not sts_policy["duration"] or time.time() <= (
sts_policy["from"]+sts_policy["duration"]):
self.log.debug("Applying STS policy for '%s'",
[str(event["server"])])
event["server"].tls = True
event["server"].port = sts_policy["port"]
@utils.hook("server.disconnect")
def on_disconnect(self, event):
sts_policy = self._get_policy(event["server"])
if sts_policy:
sts_policy["from"] = time.time()
self._set_policy(event["server"], sts_policy
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