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  • Committer: Teddy Hogeborn
  • Date: 2021-02-03 08:33:43 UTC
  • Revision ID: teddy@recompile.se-20210203083343-spdbhxgd5v8e3lv9
Update copyright year

* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
  to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -

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1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
 
1
#!/usr/bin/python3 -bI
 
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
5
#
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
 
# Copyright © 2008-2019 Teddy Hogeborn
15
 
# Copyright © 2008-2019 Björn Påhlsson
 
14
# Copyright © 2008-2020 Teddy Hogeborn
 
15
# Copyright © 2008-2020 Björn Påhlsson
16
16
#
17
17
# This file is part of Mandos.
18
18
#
77
77
import itertools
78
78
import collections
79
79
import codecs
 
80
import unittest
 
81
import random
 
82
import shlex
80
83
 
81
84
import dbus
82
85
import dbus.service
 
86
import gi
83
87
from gi.repository import GLib
84
88
from dbus.mainloop.glib import DBusGMainLoop
85
89
import ctypes
87
91
import xml.dom.minidom
88
92
import inspect
89
93
 
 
94
if sys.version_info.major == 2:
 
95
    __metaclass__ = type
 
96
    str = unicode
 
97
 
 
98
# Add collections.abc.Callable if it does not exist
 
99
try:
 
100
    collections.abc.Callable
 
101
except AttributeError:
 
102
    class abc:
 
103
        Callable = collections.Callable
 
104
    collections.abc = abc
 
105
    del abc
 
106
 
 
107
# Add shlex.quote if it does not exist
 
108
try:
 
109
    shlex.quote
 
110
except AttributeError:
 
111
    shlex.quote = re.escape
 
112
 
 
113
# Show warnings by default
 
114
if not sys.warnoptions:
 
115
    import warnings
 
116
    warnings.simplefilter("default")
 
117
 
90
118
# Try to find the value of SO_BINDTODEVICE:
91
119
try:
92
120
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
112
140
            # No value found
113
141
            SO_BINDTODEVICE = None
114
142
 
115
 
if sys.version_info.major == 2:
116
 
    str = unicode
 
143
if sys.version_info < (3, 2):
 
144
    configparser.Configparser = configparser.SafeConfigParser
117
145
 
118
 
version = "1.8.5"
 
146
version = "1.8.13"
119
147
stored_state_file = "clients.pickle"
120
148
 
121
149
logger = logging.getLogger()
 
150
logging.captureWarnings(True)   # Show warnings via the logging system
122
151
syslogger = None
123
152
 
124
153
try:
179
208
    pass
180
209
 
181
210
 
182
 
class PGPEngine(object):
 
211
class PGPEngine:
183
212
    """A simple class for OpenPGP symmetric encryption & decryption"""
184
213
 
185
214
    def __init__(self):
189
218
            output = subprocess.check_output(["gpgconf"])
190
219
            for line in output.splitlines():
191
220
                name, text, path = line.split(b":")
192
 
                if name == "gpg":
 
221
                if name == b"gpg":
193
222
                    self.gpg = path
194
223
                    break
195
224
        except OSError as e:
200
229
                          '--force-mdc',
201
230
                          '--quiet']
202
231
        # Only GPG version 1 has the --no-use-agent option.
203
 
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
 
232
        if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
204
233
            self.gnupgargs.append("--no-use-agent")
205
234
 
206
235
    def __enter__(self):
275
304
 
276
305
 
277
306
# Pretend that we have an Avahi module
278
 
class avahi(object):
 
307
class avahi:
279
308
    """This isn't so much a class as it is a module-like namespace."""
280
309
    IF_UNSPEC = -1               # avahi-common/address.h
281
310
    PROTO_UNSPEC = -1            # avahi-common/address.h
315
344
    pass
316
345
 
317
346
 
318
 
class AvahiService(object):
 
347
class AvahiService:
319
348
    """An Avahi (Zeroconf) service.
320
349
 
321
350
    Attributes:
495
524
class AvahiServiceToSyslog(AvahiService):
496
525
    def rename(self, *args, **kwargs):
497
526
        """Add the new name to the syslog messages"""
498
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
527
        ret = super(AvahiServiceToSyslog, self).rename(*args,
 
528
                                                       **kwargs)
499
529
        syslogger.setFormatter(logging.Formatter(
500
530
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
531
            .format(self.name)))
503
533
 
504
534
 
505
535
# Pretend that we have a GnuTLS module
506
 
class gnutls(object):
 
536
class gnutls:
507
537
    """This isn't so much a class as it is a module-like namespace."""
508
538
 
509
539
    library = ctypes.util.find_library("gnutls")
572
602
        pass
573
603
 
574
604
    # Classes
575
 
    class Credentials(object):
 
605
    class Credentials:
576
606
        def __init__(self):
577
607
            self._c_object = gnutls.certificate_credentials_t()
578
608
            gnutls.certificate_allocate_credentials(
582
612
        def __del__(self):
583
613
            gnutls.certificate_free_credentials(self._c_object)
584
614
 
585
 
    class ClientSession(object):
 
615
    class ClientSession:
586
616
        def __init__(self, socket, credentials=None):
587
617
            self._c_object = gnutls.session_t()
588
618
            gnutls_flags = gnutls.CLIENT
745
775
 
746
776
        x509_crt_fmt_t = ctypes.c_int
747
777
 
748
 
        # All the function declarations below are from gnutls/abstract.h
 
778
        # All the function declarations below are from
 
779
        # gnutls/abstract.h
749
780
        pubkey_init = _library.gnutls_pubkey_init
750
781
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
782
        pubkey_init.restype = _error_code
765
796
        pubkey_deinit.argtypes = [pubkey_t]
766
797
        pubkey_deinit.restype = None
767
798
    else:
768
 
        # All the function declarations below are from gnutls/openpgp.h
 
799
        # All the function declarations below are from
 
800
        # gnutls/openpgp.h
769
801
 
770
802
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
803
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
777
809
                                       openpgp_crt_fmt_t]
778
810
        openpgp_crt_import.restype = _error_code
779
811
 
780
 
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
 
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
 
                                            ctypes.POINTER(ctypes.c_uint)]
 
812
        openpgp_crt_verify_self = \
 
813
            _library.gnutls_openpgp_crt_verify_self
 
814
        openpgp_crt_verify_self.argtypes = [
 
815
            openpgp_crt_t,
 
816
            ctypes.c_uint,
 
817
            ctypes.POINTER(ctypes.c_uint),
 
818
        ]
783
819
        openpgp_crt_verify_self.restype = _error_code
784
820
 
785
821
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
814
850
    connection.close()
815
851
 
816
852
 
817
 
class Client(object):
 
853
class Client:
818
854
    """A representation of a client host served by this server.
819
855
 
820
856
    Attributes:
1023
1059
        if self.checker_initiator_tag is not None:
1024
1060
            GLib.source_remove(self.checker_initiator_tag)
1025
1061
        self.checker_initiator_tag = GLib.timeout_add(
1026
 
            int(self.interval.total_seconds() * 1000),
 
1062
            random.randrange(int(self.interval.total_seconds() * 1000
 
1063
                                 + 1)),
1027
1064
            self.start_checker)
1028
1065
        # Schedule a disable() when 'timeout' has passed
1029
1066
        if self.disable_initiator_tag is not None:
1039
1076
        # Read return code from connection (see call_pipe)
1040
1077
        returncode = connection.recv()
1041
1078
        connection.close()
1042
 
        self.checker.join()
 
1079
        if self.checker is not None:
 
1080
            self.checker.join()
1043
1081
        self.checker_callback_tag = None
1044
1082
        self.checker = None
1045
1083
 
1103
1141
        if self.checker is None:
1104
1142
            # Escape attributes for the shell
1105
1143
            escaped_attrs = {
1106
 
                attr: re.escape(str(getattr(self, attr)))
 
1144
                attr: shlex.quote(str(getattr(self, attr)))
1107
1145
                for attr in self.runtime_expansions}
1108
1146
            try:
1109
1147
                command = self.checker_command % escaped_attrs
1136
1174
                kwargs=popen_args)
1137
1175
            self.checker.start()
1138
1176
            self.checker_callback_tag = GLib.io_add_watch(
1139
 
                pipe[0].fileno(), GLib.IO_IN,
 
1177
                GLib.IOChannel.unix_new(pipe[0].fileno()),
 
1178
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1140
1179
                self.checker_callback, pipe[0], command)
1141
1180
        # Re-run this periodically if run by GLib.timeout_add
1142
1181
        return True
1397
1436
                raise ValueError("Byte arrays not supported for non-"
1398
1437
                                 "'ay' signature {!r}"
1399
1438
                                 .format(prop._dbus_signature))
1400
 
            value = dbus.ByteArray(b''.join(chr(byte)
1401
 
                                            for byte in value))
 
1439
            value = dbus.ByteArray(bytes(value))
1402
1440
        prop(value)
1403
1441
 
1404
1442
    @dbus.service.method(dbus.PROPERTIES_IFACE,
2209
2247
    del _interface
2210
2248
 
2211
2249
 
2212
 
class ProxyClient(object):
 
2250
class ProxyClient:
2213
2251
    def __init__(self, child_pipe, key_id, fpr, address):
2214
2252
        self._pipe = child_pipe
2215
2253
        self._pipe.send(('init', key_id, fpr, address))
2437
2475
        buf = ctypes.create_string_buffer(32)
2438
2476
        buf_len = ctypes.c_size_t(len(buf))
2439
2477
        # Get the key ID from the raw public key into the buffer
2440
 
        gnutls.pubkey_get_key_id(pubkey,
2441
 
                                 gnutls.KEYID_USE_SHA256,
2442
 
                                 ctypes.cast(ctypes.byref(buf),
2443
 
                                             ctypes.POINTER(ctypes.c_ubyte)),
2444
 
                                 ctypes.byref(buf_len))
 
2478
        gnutls.pubkey_get_key_id(
 
2479
            pubkey,
 
2480
            gnutls.KEYID_USE_SHA256,
 
2481
            ctypes.cast(ctypes.byref(buf),
 
2482
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2483
            ctypes.byref(buf_len))
2445
2484
        # Deinit the certificate
2446
2485
        gnutls.pubkey_deinit(pubkey)
2447
2486
 
2488
2527
        return hex_fpr
2489
2528
 
2490
2529
 
2491
 
class MultiprocessingMixIn(object):
 
2530
class MultiprocessingMixIn:
2492
2531
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2493
2532
 
2494
2533
    def sub_process_main(self, request, address):
2506
2545
        return proc
2507
2546
 
2508
2547
 
2509
 
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
 
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2510
2549
    """ adds a pipe to the MixIn """
2511
2550
 
2512
2551
    def process_request(self, request, client_address):
2527
2566
 
2528
2567
 
2529
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2530
 
                     socketserver.TCPServer, object):
 
2569
                     socketserver.TCPServer):
2531
2570
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2532
2571
 
2533
2572
    Attributes:
2666
2705
    def add_pipe(self, parent_pipe, proc):
2667
2706
        # Call "handle_ipc" for both data and EOF events
2668
2707
        GLib.io_add_watch(
2669
 
            parent_pipe.fileno(),
2670
 
            GLib.IO_IN | GLib.IO_HUP,
 
2708
            GLib.IOChannel.unix_new(parent_pipe.fileno()),
 
2709
            GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2671
2710
            functools.partial(self.handle_ipc,
2672
2711
                              parent_pipe=parent_pipe,
2673
2712
                              proc=proc))
2692
2731
            address = request[3]
2693
2732
 
2694
2733
            for c in self.clients.values():
2695
 
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
 
2734
                if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
 
2735
                              "27AE41E4649B934CA495991B7852B855"):
2696
2736
                    continue
2697
2737
                if key_id and c.key_id == key_id:
2698
2738
                    client = c
2711
2751
                return False
2712
2752
 
2713
2753
            GLib.io_add_watch(
2714
 
                parent_pipe.fileno(),
2715
 
                GLib.IO_IN | GLib.IO_HUP,
 
2754
                GLib.IOChannel.unix_new(parent_pipe.fileno()),
 
2755
                GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2716
2756
                functools.partial(self.handle_ipc,
2717
2757
                                  parent_pipe=parent_pipe,
2718
2758
                                  proc=proc,
2733
2773
        if command == 'getattr':
2734
2774
            attrname = request[1]
2735
2775
            if isinstance(client_object.__getattribute__(attrname),
2736
 
                          collections.Callable):
 
2776
                          collections.abc.Callable):
2737
2777
                parent_pipe.send(('function', ))
2738
2778
            else:
2739
2779
                parent_pipe.send((
2750
2790
def rfc3339_duration_to_delta(duration):
2751
2791
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2752
2792
 
2753
 
    >>> rfc3339_duration_to_delta("P7D")
2754
 
    datetime.timedelta(7)
2755
 
    >>> rfc3339_duration_to_delta("PT60S")
2756
 
    datetime.timedelta(0, 60)
2757
 
    >>> rfc3339_duration_to_delta("PT60M")
2758
 
    datetime.timedelta(0, 3600)
2759
 
    >>> rfc3339_duration_to_delta("PT24H")
2760
 
    datetime.timedelta(1)
2761
 
    >>> rfc3339_duration_to_delta("P1W")
2762
 
    datetime.timedelta(7)
2763
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2764
 
    datetime.timedelta(0, 330)
2765
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2766
 
    datetime.timedelta(1, 200)
 
2793
    >>> timedelta = datetime.timedelta
 
2794
    >>> rfc3339_duration_to_delta("P7D") == timedelta(7)
 
2795
    True
 
2796
    >>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
 
2797
    True
 
2798
    >>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
 
2799
    True
 
2800
    >>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
 
2801
    True
 
2802
    >>> rfc3339_duration_to_delta("P1W") == timedelta(7)
 
2803
    True
 
2804
    >>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
 
2805
    True
 
2806
    >>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
 
2807
    True
 
2808
    >>> del timedelta
2767
2809
    """
2768
2810
 
2769
2811
    # Parsing an RFC 3339 duration with regular expressions is not
2849
2891
def string_to_delta(interval):
2850
2892
    """Parse a string and return a datetime.timedelta
2851
2893
 
2852
 
    >>> string_to_delta('7d')
2853
 
    datetime.timedelta(7)
2854
 
    >>> string_to_delta('60s')
2855
 
    datetime.timedelta(0, 60)
2856
 
    >>> string_to_delta('60m')
2857
 
    datetime.timedelta(0, 3600)
2858
 
    >>> string_to_delta('24h')
2859
 
    datetime.timedelta(1)
2860
 
    >>> string_to_delta('1w')
2861
 
    datetime.timedelta(7)
2862
 
    >>> string_to_delta('5m 30s')
2863
 
    datetime.timedelta(0, 330)
 
2894
    >>> string_to_delta('7d') == datetime.timedelta(7)
 
2895
    True
 
2896
    >>> string_to_delta('60s') == datetime.timedelta(0, 60)
 
2897
    True
 
2898
    >>> string_to_delta('60m') == datetime.timedelta(0, 3600)
 
2899
    True
 
2900
    >>> string_to_delta('24h') == datetime.timedelta(1)
 
2901
    True
 
2902
    >>> string_to_delta('1w') == datetime.timedelta(7)
 
2903
    True
 
2904
    >>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
 
2905
    True
2864
2906
    """
2865
2907
 
2866
2908
    try:
2968
3010
 
2969
3011
    options = parser.parse_args()
2970
3012
 
2971
 
    if options.check:
2972
 
        import doctest
2973
 
        fail_count, test_count = doctest.testmod()
2974
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2975
 
 
2976
3013
    # Default values for config file for server-global settings
2977
3014
    if gnutls.has_rawpk:
2978
3015
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2998
3035
    del priority
2999
3036
 
3000
3037
    # Parse config file for server-global settings
3001
 
    server_config = configparser.SafeConfigParser(server_defaults)
 
3038
    server_config = configparser.ConfigParser(server_defaults)
3002
3039
    del server_defaults
3003
3040
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
3004
 
    # Convert the SafeConfigParser object to a dict
 
3041
    # Convert the ConfigParser object to a dict
3005
3042
    server_settings = server_config.defaults()
3006
3043
    # Use the appropriate methods on the non-string config options
3007
3044
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
3116
                                  server_settings["servicename"])))
3080
3117
 
3081
3118
    # Parse config file with clients
3082
 
    client_config = configparser.SafeConfigParser(Client
3083
 
                                                  .client_defaults)
 
3119
    client_config = configparser.ConfigParser(Client.client_defaults)
3084
3120
    client_config.read(os.path.join(server_settings["configdir"],
3085
3121
                                    "clients.conf"))
3086
3122
 
3157
3193
        # Close all input and output, do double fork, etc.
3158
3194
        daemon()
3159
3195
 
3160
 
    # multiprocessing will use threads, so before we use GLib we need
3161
 
    # to inform GLib that threads will be used.
3162
 
    GLib.threads_init()
 
3196
    if gi.version_info < (3, 10, 2):
 
3197
        # multiprocessing will use threads, so before we use GLib we
 
3198
        # need to inform GLib that threads will be used.
 
3199
        GLib.threads_init()
3163
3200
 
3164
3201
    global main_loop
3165
3202
    # From the Avahi example code
3241
3278
                             if isinstance(s, bytes)
3242
3279
                             else s) for s in
3243
3280
                            value["client_structure"]]
3244
 
                        # .name & .host
3245
 
                        for k in ("name", "host"):
 
3281
                        # .name, .host, and .checker_command
 
3282
                        for k in ("name", "host", "checker_command"):
3246
3283
                            if isinstance(value[k], bytes):
3247
3284
                                value[k] = value[k].decode("utf-8")
3248
3285
                        if "key_id" not in value:
3258
3295
                        for key, value in
3259
3296
                        bytes_old_client_settings.items()}
3260
3297
                    del bytes_old_client_settings
3261
 
                    # .host
 
3298
                    # .host and .checker_command
3262
3299
                    for value in old_client_settings.values():
3263
 
                        if isinstance(value["host"], bytes):
3264
 
                            value["host"] = (value["host"]
3265
 
                                             .decode("utf-8"))
 
3300
                        for attribute in ("host", "checker_command"):
 
3301
                            if isinstance(value[attribute], bytes):
 
3302
                                value[attribute] = (value[attribute]
 
3303
                                                    .decode("utf-8"))
3266
3304
            os.remove(stored_state_path)
3267
3305
        except IOError as e:
3268
3306
            if e.errno == errno.ENOENT:
3593
3631
                sys.exit(1)
3594
3632
            # End of Avahi example code
3595
3633
 
3596
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3597
 
                          lambda *args, **kwargs:
3598
 
                          (tcp_server.handle_request
3599
 
                           (*args[2:], **kwargs) or True))
 
3634
        GLib.io_add_watch(
 
3635
            GLib.IOChannel.unix_new(tcp_server.fileno()),
 
3636
            GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
3637
            lambda *args, **kwargs: (tcp_server.handle_request
 
3638
                                     (*args[2:], **kwargs) or True))
3600
3639
 
3601
3640
        logger.debug("Starting main loop")
3602
3641
        main_loop.run()
3612
3651
    # Must run before the D-Bus bus name gets deregistered
3613
3652
    cleanup()
3614
3653
 
 
3654
 
 
3655
def should_only_run_tests():
 
3656
    parser = argparse.ArgumentParser(add_help=False)
 
3657
    parser.add_argument("--check", action='store_true')
 
3658
    args, unknown_args = parser.parse_known_args()
 
3659
    run_tests = args.check
 
3660
    if run_tests:
 
3661
        # Remove --check argument from sys.argv
 
3662
        sys.argv[1:] = unknown_args
 
3663
    return run_tests
 
3664
 
 
3665
# Add all tests from doctest strings
 
3666
def load_tests(loader, tests, none):
 
3667
    import doctest
 
3668
    tests.addTests(doctest.DocTestSuite())
 
3669
    return tests
3615
3670
 
3616
3671
if __name__ == '__main__':
3617
 
    main()
 
3672
    try:
 
3673
        if should_only_run_tests():
 
3674
            # Call using ./mandos --check [--verbose]
 
3675
            unittest.main()
 
3676
        else:
 
3677
            main()
 
3678
    finally:
 
3679
        logging.shutdown()