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mandos-monitor
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#     GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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# along with this program.  If not, see
 
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# <http://www.gnu.org/licenses/>.
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# 
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# Contact the authors at <mandos@recompile.se>.
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# 
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from __future__ import (division, absolute_import, print_function,
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                        unicode_literals)
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from future_builtins import *
 
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import sys
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import os
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import signal
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    properties and calls a hook function when any of them are
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    changed.
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    """
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    def __init__(self, proxy_object=None, *args, **kwargs):
 
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    def __init__(self, proxy_object=None, properties=None, **kwargs):
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        self.proxy = proxy_object # Mandos Client proxy object
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        self.properties = dict()
 
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        self.properties = dict() if properties is None else properties
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        self.property_changed_match = (
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            self.proxy.connect_to_signal("PropertyChanged",
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                                         self.property_changed,
 
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                                         self._property_changed,
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                                         client_interface,
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                                         byte_arrays=True))
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        self.properties.update(
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            self.proxy.GetAll(client_interface,
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                              dbus_interface = dbus.PROPERTIES_IFACE))
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        #XXX This breaks good super behaviour
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#        super(MandosClientPropertyCache, self).__init__(
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#            *args, **kwargs)
 
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        if properties is None:
 
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            self.properties.update(
 
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                self.proxy.GetAll(client_interface,
 
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                                  dbus_interface
 
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                                  = dbus.PROPERTIES_IFACE))
 
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        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
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    def _property_changed(self, property, value):
 
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        """Helper which takes positional arguments"""
 
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        return self.property_changed(property=property, value=value)
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    def property_changed(self, property=None, value=None):
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        """This is called whenever we get a PropertyChanged signal
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        # Update properties dict with new value
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        self.properties[property] = value
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    def delete(self, *args, **kwargs):
 
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    def delete(self):
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        self.property_changed_match.remove()
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        super(MandosClientPropertyCache, self).__init__(
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            *args, **kwargs)
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class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
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    """
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    def __init__(self, server_proxy_object=None, update_hook=None,
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                 delete_hook=None, logger=None, *args, **kwargs):
 
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                 delete_hook=None, logger=None, **kwargs):
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        # Called on update
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        self.update_hook = update_hook
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        # Called on delete
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        self.logger = logger
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        self._update_timer_callback_tag = None
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        self._update_timer_callback_lock = 0
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        # The widget shown normally
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        self._text_widget = urwid.Text("")
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        # The widget shown when we have focus
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        self._focus_text_widget = urwid.Text("")
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        super(MandosClientWidget, self).__init__(
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            update_hook=update_hook, delete_hook=delete_hook,
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            *args, **kwargs)
 
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        super(MandosClientWidget, self).__init__(**kwargs)
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        self.update()
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        self.opened = False
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        last_checked_ok = isoformat_to_datetime(self.properties
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                                                ["LastCheckedOK"])
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        if self.properties ["LastCheckerStatus"] != 0:
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            self.using_timer(True)
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        if self.need_approval:
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            self.using_timer(True)
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        self.match_objects = (
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            self.proxy.connect_to_signal("CheckerCompleted",
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                                         self.checker_completed,
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        #self.logger('Created client {0}'
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        #            .format(self.properties["Name"]))
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    def property_changed(self, property=None, value=None):
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        super(self, MandosClientWidget).property_changed(property,
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                                                         value)
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        if property == "ApprovalPending":
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            using_timer(bool(value))
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        if property == "LastCheckerStatus":
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            using_timer(value != 0)
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            #self.logger('Checker for client {0} (command "{1}") was '
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            #            ' successful'.format(self.properties["Name"],
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            #                                 command))
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    def using_timer(self, flag):
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        """Call this method with True or False when timer should be
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        activated or deactivated.
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        """
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        old = self._update_timer_callback_lock
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        if flag:
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            self._update_timer_callback_lock += 1
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        else:
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            self._update_timer_callback_lock -= 1
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        if old == 0 and self._update_timer_callback_lock:
 
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        if flag and self._update_timer_callback_tag is None:
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            # Will update the shown timer value every second
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            self._update_timer_callback_tag = (gobject.timeout_add
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                                               (1000,
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                                                self.update_timer))
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        elif old and self._update_timer_callback_lock == 0:
 
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        elif not (flag or self._update_timer_callback_tag is None):
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            gobject.source_remove(self._update_timer_callback_tag)
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            self._update_timer_callback_tag = None
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            message = 'Client {0} will get its secret in {1} seconds'
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        self.logger(message.format(self.properties["Name"],
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                                   timeout/1000))
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        self.using_timer(True)
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    def rejected(self, reason):
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        self.logger('Client {0} was rejected; reason: {1}'
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                          "bold-underline-blink":
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                              "bold-underline-blink-standout",
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                          }
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        # Rebuild focus and non-focus widgets using current properties
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        # Base part of a client. Name!
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        base = '{name}: '.format(name=self.properties["Name"])
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        if not self.properties["Enabled"]:
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            message = "DISABLED"
 
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            self.using_timer(False)
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        elif self.properties["ApprovalPending"]:
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            timeout = datetime.timedelta(milliseconds
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                                         = self.properties
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            last_approval_request = isoformat_to_datetime(
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                self.properties["LastApprovalRequest"])
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            if last_approval_request is not None:
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                timer = timeout - (datetime.datetime.utcnow()
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                                   - last_approval_request)
 
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                timer = max(timeout - (datetime.datetime.utcnow()
 
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                                       - last_approval_request),
 
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                            datetime.timedelta())
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            else:
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                timer = datetime.timedelta()
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            if self.properties["ApprovedByDefault"]:
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            else:
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                message = "Denial in {0}. (a)pprove?"
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            message = message.format(unicode(timer).rsplit(".", 1)[0])
 
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            self.using_timer(True)
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        elif self.properties["LastCheckerStatus"] != 0:
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            # When checker has failed, print a timer until client expires
 
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            # When checker has failed, show timer until client expires
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            expires = self.properties["Expires"]
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            if expires == "":
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                timer = datetime.timedelta(0)
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            else:
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                expires = datetime.datetime.strptime(expires,
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                                                     '%Y-%m-%dT%H:%M:%S.%f')
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                timer = expires - datetime.datetime.utcnow()
 
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                expires = (datetime.datetime.strptime
 
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                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
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                timer = max(expires - datetime.datetime.utcnow(),
 
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                            datetime.timedelta())
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            message = ('A checker has failed! Time until client'
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                       ' gets disabled: {0}'
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                       .format(unicode(timer).rsplit(".", 1)[0]))
 
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            self.using_timer(True)
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        else:
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            message = "enabled"
 
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            self.using_timer(False)
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        self._text = "{0}{1}".format(base, message)
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        if not urwid.supports_unicode():
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            self._text = self._text.encode("ascii", "replace")
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        textlist = [("normal", self._text)]
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        self.update()
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        return True             # Keep calling this
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    def delete(self, *args, **kwargs):
 
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    def delete(self, **kwargs):
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        if self._update_timer_callback_tag is not None:
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            gobject.source_remove(self._update_timer_callback_tag)
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            self._update_timer_callback_tag = None
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        self.match_objects = ()
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        if self.delete_hook is not None:
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            self.delete_hook(self)
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        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
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        return super(MandosClientWidget, self).delete(**kwargs)
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    def render(self, maxcolrow, focus=False):
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        """Render differently if we have focus.
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        else:
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            return key
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    def property_changed(self, property=None, value=None,
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                         *args, **kwargs):
 
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    def property_changed(self, property=None, **kwargs):
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        """Call self.update() if old value is not new value.
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        This overrides the method from MandosClientPropertyCache"""
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        property_name = unicode(property)
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        old_value = self.properties.get(property_name)
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        super(MandosClientWidget, self).property_changed(
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            property=property, value=value, *args, **kwargs)
 
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            property=property, **kwargs)
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        if self.properties.get(property_name) != old_value:
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            self.update()
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    "down" key presses, thus not allowing any containing widgets to
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    use them as an excuse to shift focus away from this widget.
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    """
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    def keypress(self, maxcolrow, key):
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        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
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    def keypress(self, *args, **kwargs):
 
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        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
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        if ret in ("up", "down"):
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            return
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        return ret
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                                               logger
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                                               =self.log_message),
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                            path=path)
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        self.refresh()
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        self._input_callback_tag = (gobject.io_add_watch
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                                    (sys.stdin.fileno(),