/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2019-07-27 10:11:45 UTC
  • Revision ID: teddy@recompile.se-20190727101145-jnpbpf8220gldbcd
Add dracut(8) support

Add support for the dracut(8) system for generating initramfs image
files; dracut is an alternative to the "initramfs-tools" package.

* .bzrignore (dracut-module/password-agent): Ignore new binary file.
* dracut-module: New directory for the dracut module.
* INSTALL (Prerequisites/Libraries/Mandos Client): Add dracut as an
                                                   alternative to
                                                   initramfs-tools,
                                                   and also add GLib.
* Makefile (DRACUTMODULE, GLIB_CFLAGS, GLIB_LIBS): New.
  (CPROGS): Add "dracut-module/password-agent".
  (DOCS): Add "dracut-module/password-agent.8mandos".
  (dracut-module/password-agent.8mandos): New.
  (dracut-module/password-agent.8mandos.xhtml): - '' -
  (dracut-module/password-agent): - '' -
  (check): Add command to run tests of password-agent(8mandos).
  (install-client-nokey): Also install the dracut module directory,
                          its files, and the password-agent(8mandos)
                          manual page.
  (install-client): To update the initramfs image file, run
                    update-initramfs or dracut depending on what is
                    installed.
  (uninstall-client): - '' - and also uninstall the the files in the
                      dracut module directory, that directory itself,
                      and the password-agent(8mandos) manual page.
* debian/control (Build-Depends): Add "libglib2.0-dev (>=2.40)".
  (Package: mandos-client/Depends): Add "dracut (>= 044+241-3)" as an
                                    alternative dependency to
                                    initramfs-tools.
  (Package: mandos-client/Conflicts): New; set to
                                      "dracut-config-generic".
  (debian/mandos-client.README.Debian): Document alternative commands
                                        to update the initramfs image
                                        for when dracut is used.
* debian/mandos-client.postinst (update_initramfs): Use alternative
                                                    commands to update
                                                    the initramfs
                                                    image for when
                                                    dracut is used.
* debian/tests/control (password-agent, password-agent-suid): Add two
                                                              new tests.
* dracut-module/ask-password-mandos.path: New.
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/cmdline-mandos.sh: - '' -
* dracut-module/module-setup.sh: - '' -
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: - '' -
* initramfs-unpack: Use the dracut "skipcpio" command, if available.
                    Also be more flexible and try hard to detect where
                    compressed data starts.
* plugins.d/mandos-client.xml (SECURITY): Be more precise that the
                                          mandos-client binary might
                                          not always be setuid, but
                                          that the program assumes
                                          that it has been started
                                          that way.
* plugins.d/password-prompt.c: Add new "--prompt" option.
  (conflict_detection): First try to detect the new PID file of
                        plymouth.
  (main): Define and use new "prompt" variable.
* plugins.d/password-prompt.xml (SYNOPSIS): Show new --prompt option.
  (DESCRIPTION): Describe new behavior of looking for plymouth PID
                 file.
  (OPTIONS): Document new "--prompt" option.
  (ENVIRONMENT): Clarify that the CRYPTTAB_SOURCE and CRYPTTAB_NAME
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the CRYPTTAB_SOURCE and
                 CRYPTTAB_NAME comes from, since this can now be
                 either initramfs-tools or dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference, and add commas
              to separate the other references.
* plugins.d/plymouth.c: Add new "--prompt" and "--debug" options.
  (debug): New global flag.
  (fprintf_plus): New function, used for debug output.
  (exec_and_wait): Add extra "const" to "argv" argument.
  (main): Define and use new "prompt" variable.  Add debug output.
  (main/options, main/parse_opt): New; used to parse options.
* plugins.d/plymouth.xml (SYNOPSIS): Show new options.
  (OPTIONS): Document new options.
  (ENVIRONMENT): Clarify that the cryptsource and crypttarget
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the cryptsource and crypttarget
                 comes from, since this can now be either
                 initramfs-tools or dracut.
  (EXAMPLE): Add an example using an option.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/splashy.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/usplash.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.

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Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
33
33
 
34
34
import sys
35
35
import os
36
 
import warnings
 
36
 
37
37
import datetime
38
 
import locale
39
 
import logging
40
38
 
41
39
import urwid.curses_display
42
40
import urwid
46
44
 
47
45
import dbus
48
46
 
 
47
import locale
 
48
 
 
49
import logging
 
50
 
49
51
if sys.version_info.major == 2:
50
52
    str = unicode
51
53
 
52
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
53
 
logging.basicConfig(level="NOTSET", # Show all messages
54
 
                    format="%(message)s") # Show basic log messages
55
 
 
56
 
logging.captureWarnings(True)   # Show warnings via the logging system
57
 
 
58
 
locale.setlocale(locale.LC_ALL, "")
59
 
 
60
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
 
54
locale.setlocale(locale.LC_ALL, '')
 
55
 
 
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
61
57
 
62
58
# Some useful constants
63
 
domain = "se.recompile"
64
 
server_interface = domain + ".Mandos"
65
 
client_interface = domain + ".Mandos.Client"
66
 
version = "1.8.9"
 
59
domain = 'se.recompile'
 
60
server_interface = domain + '.Mandos'
 
61
client_interface = domain + '.Mandos.Client'
 
62
version = "1.8.4"
67
63
 
68
64
try:
69
65
    dbus.OBJECT_MANAGER_IFACE
126
122
    """
127
123
 
128
124
    def __init__(self, server_proxy_object=None, update_hook=None,
129
 
                 delete_hook=None, **kwargs):
 
125
                 delete_hook=None, logger=None, **kwargs):
130
126
        # Called on update
131
127
        self.update_hook = update_hook
132
128
        # Called on delete
133
129
        self.delete_hook = delete_hook
134
130
        # Mandos Server proxy object
135
131
        self.server_proxy_object = server_proxy_object
 
132
        # Logger
 
133
        self.logger = logger
136
134
 
137
135
        self._update_timer_callback_tag = None
138
136
 
165
163
                                         self.rejected,
166
164
                                         client_interface,
167
165
                                         byte_arrays=True))
168
 
        log.debug("Created client %s", self.properties["Name"])
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
169
168
 
170
169
    def using_timer(self, flag):
171
170
        """Call this method with True or False when timer should be
173
172
        """
174
173
        if flag and self._update_timer_callback_tag is None:
175
174
            # Will update the shown timer value every second
176
 
            self._update_timer_callback_tag = (
177
 
                GLib.timeout_add(1000,
178
 
                                 glib_safely(self.update_timer)))
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
 
176
                                               (1000,
 
177
                                                self.update_timer))
179
178
        elif not (flag or self._update_timer_callback_tag is None):
180
179
            GLib.source_remove(self._update_timer_callback_tag)
181
180
            self._update_timer_callback_tag = None
182
181
 
183
182
    def checker_completed(self, exitstatus, condition, command):
184
183
        if exitstatus == 0:
185
 
            log.debug('Checker for client %s (command "%s")'
186
 
                      " succeeded", self.properties["Name"], command)
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
187
187
            self.update()
188
188
            return
189
189
        # Checker failed
190
190
        if os.WIFEXITED(condition):
191
 
            log.info('Checker for client %s (command "%s") failed'
192
 
                     " with exit code %d", self.properties["Name"],
193
 
                     command, os.WEXITSTATUS(condition))
 
191
            self.logger('Checker for client {} (command "{}") failed'
 
192
                        ' with exit code {}'
 
193
                        .format(self.properties["Name"], command,
 
194
                                os.WEXITSTATUS(condition)))
194
195
        elif os.WIFSIGNALED(condition):
195
 
            log.info('Checker for client %s (command "%s") was'
196
 
                     " killed by signal %d", self.properties["Name"],
197
 
                     command, os.WTERMSIG(condition))
 
196
            self.logger('Checker for client {} (command "{}") was'
 
197
                        ' killed by signal {}'
 
198
                        .format(self.properties["Name"], command,
 
199
                                os.WTERMSIG(condition)))
198
200
        self.update()
199
201
 
200
202
    def checker_started(self, command):
201
203
        """Server signals that a checker started."""
202
 
        log.debug('Client %s started checker "%s"',
203
 
                  self.properties["Name"], command)
 
204
        self.logger('Client {} started checker "{}"'
 
205
                    .format(self.properties["Name"],
 
206
                            command), level=0)
204
207
 
205
208
    def got_secret(self):
206
 
        log.info("Client %s received its secret",
207
 
                 self.properties["Name"])
 
209
        self.logger('Client {} received its secret'
 
210
                    .format(self.properties["Name"]))
208
211
 
209
212
    def need_approval(self, timeout, default):
210
213
        if not default:
211
 
            message = "Client %s needs approval within %f seconds"
 
214
            message = 'Client {} needs approval within {} seconds'
212
215
        else:
213
 
            message = "Client %s will get its secret in %f seconds"
214
 
        log.info(message, self.properties["Name"], timeout/1000)
 
216
            message = 'Client {} will get its secret in {} seconds'
 
217
        self.logger(message.format(self.properties["Name"],
 
218
                                   timeout/1000))
215
219
 
216
220
    def rejected(self, reason):
217
 
        log.info("Client %s was rejected; reason: %s",
218
 
                 self.properties["Name"], reason)
 
221
        self.logger('Client {} was rejected; reason: {}'
 
222
                    .format(self.properties["Name"], reason))
219
223
 
220
224
    def selectable(self):
221
225
        """Make this a "selectable" widget.
247
251
        # Rebuild focus and non-focus widgets using current properties
248
252
 
249
253
        # Base part of a client. Name!
250
 
        base = "{name}: ".format(name=self.properties["Name"])
 
254
        base = '{name}: '.format(name=self.properties["Name"])
251
255
        if not self.properties["Enabled"]:
252
256
            message = "DISABLED"
253
257
            self.using_timer(False)
275
279
                timer = datetime.timedelta(0)
276
280
            else:
277
281
                expires = (datetime.datetime.strptime
278
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
282
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
279
283
                timer = max(expires - datetime.datetime.utcnow(),
280
284
                            datetime.timedelta())
281
 
            message = ("A checker has failed! Time until client"
282
 
                       " gets disabled: {}"
 
285
            message = ('A checker has failed! Time until client'
 
286
                       ' gets disabled: {}'
283
287
                       .format(str(timer).rsplit(".", 1)[0]))
284
288
            self.using_timer(True)
285
289
        else:
383
387
            self.update()
384
388
 
385
389
 
386
 
def glib_safely(func, retval=True):
387
 
    def safe_func(*args, **kwargs):
388
 
        try:
389
 
            return func(*args, **kwargs)
390
 
        except Exception:
391
 
            log.exception("")
392
 
            return retval
393
 
    return safe_func
394
 
 
395
 
 
396
390
class ConstrainedListBox(urwid.ListBox):
397
391
    """Like a normal urwid.ListBox, but will consume all "up" or
398
392
    "down" key presses, thus not allowing any containing widgets to
410
404
    """This is the entire user interface - the whole screen
411
405
    with boxes, lists of client widgets, etc.
412
406
    """
413
 
    def __init__(self, max_log_length=1000):
 
407
    def __init__(self, max_log_length=1000, log_level=1):
414
408
        DBusGMainLoop(set_as_default=True)
415
409
 
416
410
        self.screen = urwid.curses_display.Screen()
453
447
        self.log = urwid.SimpleListWalker([])
454
448
        self.max_log_length = max_log_length
455
449
 
 
450
        self.log_level = log_level
 
451
 
456
452
        # We keep a reference to the log widget so we can remove it
457
453
        # from the ListWalker without it getting destroyed
458
454
        self.logbox = ConstrainedListBox(self.log)
462
458
        self.log_visible = True
463
459
        self.log_wrap = "any"
464
460
 
465
 
        self.loghandler = UILogHandler(self)
466
 
 
467
461
        self.rebuild()
468
 
        self.add_log_line(("bold",
469
 
                           "Mandos Monitor version " + version))
470
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
462
        self.log_message_raw(("bold",
 
463
                              "Mandos Monitor version " + version))
 
464
        self.log_message_raw(("bold",
 
465
                              "q: Quit  ?: Help"))
471
466
 
472
 
        self.busname = domain + ".Mandos"
 
467
        self.busname = domain + '.Mandos'
473
468
        self.main_loop = GLib.MainLoop()
474
469
 
475
 
    def client_not_found(self, key_id, address):
476
 
        log.info("Client with address %s and key ID %s could"
477
 
                 " not be found", address, key_id)
 
470
    def client_not_found(self, fingerprint, address):
 
471
        self.log_message("Client with address {} and fingerprint {}"
 
472
                         " could not be found"
 
473
                         .format(address, fingerprint))
478
474
 
479
475
    def rebuild(self):
480
476
        """This rebuilds the User Interface.
491
487
            self.uilist.append(self.logbox)
492
488
        self.topwidget = urwid.Pile(self.uilist)
493
489
 
494
 
    def add_log_line(self, markup):
 
490
    def log_message(self, message, level=1):
 
491
        """Log message formatted with timestamp"""
 
492
        if level < self.log_level:
 
493
            return
 
494
        timestamp = datetime.datetime.now().isoformat()
 
495
        self.log_message_raw("{}: {}".format(timestamp, message),
 
496
                             level=level)
 
497
 
 
498
    def log_message_raw(self, markup, level=1):
 
499
        """Add a log message to the log buffer."""
 
500
        if level < self.log_level:
 
501
            return
495
502
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
496
503
        if self.max_log_length:
497
504
            if len(self.log) > self.max_log_length:
498
 
                del self.log[0:(len(self.log) - self.max_log_length)]
 
505
                del self.log[0:len(self.log)-self.max_log_length-1]
499
506
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
500
507
                              coming_from="above")
501
508
        self.refresh()
504
511
        """Toggle visibility of the log buffer."""
505
512
        self.log_visible = not self.log_visible
506
513
        self.rebuild()
507
 
        log.debug("Log visibility changed to: %s", self.log_visible)
 
514
        self.log_message("Log visibility changed to: {}"
 
515
                         .format(self.log_visible), level=0)
508
516
 
509
517
    def change_log_display(self):
510
518
        """Change type of log display.
515
523
            self.log_wrap = "clip"
516
524
        for textwidget in self.log:
517
525
            textwidget.set_wrap_mode(self.log_wrap)
518
 
        log.debug("Wrap mode: %s", self.log_wrap)
 
526
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
527
                         level=0)
519
528
 
520
529
    def find_and_remove_client(self, path, interfaces):
521
530
        """Find a client by its object path and remove it.
529
538
            client = self.clients_dict[path]
530
539
        except KeyError:
531
540
            # not found?
532
 
            log.warning("Unknown client %s removed", path)
 
541
            self.log_message("Unknown client {!r} removed"
 
542
                             .format(path))
533
543
            return
534
544
        client.delete()
535
545
 
548
558
            proxy_object=client_proxy_object,
549
559
            update_hook=self.refresh,
550
560
            delete_hook=self.remove_client,
 
561
            logger=self.log_message,
551
562
            properties=dict(ifs_and_props[client_interface])),
552
563
                        path=path)
553
564
 
573
584
 
574
585
    def run(self):
575
586
        """Start the main loop and exit when it's done."""
576
 
        log.addHandler(self.loghandler)
577
 
        self.orig_log_propagate = log.propagate
578
 
        log.propagate = False
579
 
        self.orig_log_level = log.level
580
 
        log.setLevel("INFO")
581
587
        self.bus = dbus.SystemBus()
582
588
        mandos_dbus_objc = self.bus.get_object(
583
589
            self.busname, "/", follow_name_owner_changes=True)
587
593
            mandos_clients = (self.mandos_serv
588
594
                              .GetAllClientsWithProperties())
589
595
            if not mandos_clients:
590
 
                log.warning("Note: Server has no clients.")
 
596
                self.log_message_raw(("bold",
 
597
                                      "Note: Server has no clients."))
591
598
        except dbus.exceptions.DBusException:
592
 
            log.warning("Note: No Mandos server running.")
 
599
            self.log_message_raw(("bold",
 
600
                                  "Note: No Mandos server running."))
593
601
            mandos_clients = dbus.Dictionary()
594
602
 
595
603
        (self.mandos_serv
615
623
                proxy_object=client_proxy_object,
616
624
                properties=client,
617
625
                update_hook=self.refresh,
618
 
                delete_hook=self.remove_client),
 
626
                delete_hook=self.remove_client,
 
627
                logger=self.log_message),
619
628
                            path=path)
620
629
 
621
630
        self.refresh()
622
 
        self._input_callback_tag = (
623
 
            GLib.io_add_watch(
624
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
625
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
626
 
                glib_safely(self.process_input)))
 
631
        self._input_callback_tag = (GLib.io_add_watch
 
632
                                    (sys.stdin.fileno(),
 
633
                                     GLib.IO_IN,
 
634
                                     self.process_input))
627
635
        self.main_loop.run()
628
636
        # Main loop has finished, we should close everything now
629
637
        GLib.source_remove(self._input_callback_tag)
630
 
        with warnings.catch_warnings():
631
 
            warnings.simplefilter("ignore", BytesWarning)
632
 
            self.screen.stop()
 
638
        self.screen.stop()
633
639
 
634
640
    def stop(self):
635
641
        self.main_loop.quit()
636
 
        log.removeHandler(self.loghandler)
637
 
        log.propagate = self.orig_log_propagate
638
642
 
639
643
    def process_input(self, source, condition):
640
644
        keys = self.screen.get_input()
673
677
                if not self.log_visible:
674
678
                    self.log_visible = True
675
679
                    self.rebuild()
676
 
                self.add_log_line(("bold",
677
 
                                   "  ".join(("q: Quit",
678
 
                                              "?: Help",
679
 
                                              "l: Log window toggle",
680
 
                                              "TAB: Switch window",
681
 
                                              "w: Wrap (log lines)",
682
 
                                              "v: Toggle verbose log",
683
 
                                   ))))
684
 
                self.add_log_line(("bold",
685
 
                                   "  ".join(("Clients:",
686
 
                                              "+: Enable",
687
 
                                              "-: Disable",
688
 
                                              "R: Remove",
689
 
                                              "s: Start new checker",
690
 
                                              "S: Stop checker",
691
 
                                              "C: Checker OK",
692
 
                                              "a: Approve",
693
 
                                              "d: Deny",
694
 
                                   ))))
 
680
                self.log_message_raw(("bold",
 
681
                                      "  ".
 
682
                                      join(("q: Quit",
 
683
                                            "?: Help",
 
684
                                            "l: Log window toggle",
 
685
                                            "TAB: Switch window",
 
686
                                            "w: Wrap (log lines)",
 
687
                                            "v: Toggle verbose log",
 
688
                                            ))))
 
689
                self.log_message_raw(("bold",
 
690
                                      "  "
 
691
                                      .join(("Clients:",
 
692
                                             "+: Enable",
 
693
                                             "-: Disable",
 
694
                                             "R: Remove",
 
695
                                             "s: Start new checker",
 
696
                                             "S: Stop checker",
 
697
                                             "C: Checker OK",
 
698
                                             "a: Approve",
 
699
                                             "d: Deny"))))
695
700
                self.refresh()
696
701
            elif key == "tab":
697
702
                if self.topwidget.get_focus() is self.logbox:
700
705
                    self.topwidget.set_focus(self.logbox)
701
706
                self.refresh()
702
707
            elif key == "v":
703
 
                if log.level < logging.INFO:
704
 
                    log.setLevel(logging.INFO)
705
 
                    log.info("Verbose mode: Off")
 
708
                if self.log_level == 0:
 
709
                    self.log_level = 1
 
710
                    self.log_message("Verbose mode: Off")
706
711
                else:
707
 
                    log.setLevel(logging.NOTSET)
708
 
                    log.info("Verbose mode: On")
 
712
                    self.log_level = 0
 
713
                    self.log_message("Verbose mode: On")
709
714
            # elif (key == "end" or key == "meta >" or key == "G"
710
715
            #       or key == ">"):
711
716
            #     pass            # xxx end-of-buffer
730
735
        return True
731
736
 
732
737
 
733
 
class UILogHandler(logging.Handler):
734
 
    def __init__(self, ui, *args, **kwargs):
735
 
        self.ui = ui
736
 
        super(UILogHandler, self).__init__(*args, **kwargs)
737
 
        self.setFormatter(
738
 
            logging.Formatter("%(asctime)s: %(message)s"))
739
 
    def emit(self, record):
740
 
        msg = self.format(record)
741
 
        if record.levelno > logging.INFO:
742
 
            msg = ("bold", msg)
743
 
        self.ui.add_log_line(msg)
744
 
 
745
 
 
746
738
ui = UserInterface()
747
739
try:
748
740
    ui.run()
749
741
except KeyboardInterrupt:
750
 
    with warnings.catch_warnings():
751
 
        warnings.filterwarnings("ignore", "", BytesWarning)
752
 
        ui.screen.stop()
753
 
except Exception:
754
 
    with warnings.catch_warnings():
755
 
        warnings.filterwarnings("ignore", "", BytesWarning)
756
 
        ui.screen.stop()
 
742
    ui.screen.stop()
 
743
except Exception as e:
 
744
    ui.log_message(str(e))
 
745
    ui.screen.stop()
757
746
    raise