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  • Committer: Teddy Hogeborn
  • Date: 2013-10-26 19:05:21 UTC
  • Revision ID: teddy@recompile.se-20131026190521-giagilisbyciox2h
Fall back to /var/run for pidfile if /run is not a directory.

This is for old (possibly non-Debian) systems which have not migrated
from /var/run to /run yet.

* init.d-mandos (PIDFILE): Fall back to /var/run/mandos.pid if /run is
                           not a directory.
* mandos (pidfilename): - '' -
* mandos.xml (FILES): Document fallback to /var/run/mandos.pid if /run
                      is not a directory.

Reported-by: Nathanael D. Noblet <nathanael@gnat.ca>
Suggested-by: Nathanael D. Noblet <nathanael@gnat.ca>

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Lines of Context:
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
# 
13
13
# Everything else is
14
 
# Copyright © 2008-2012 Teddy Hogeborn
15
 
# Copyright © 2008-2012 Björn Påhlsson
 
14
# Copyright © 2008-2013 Teddy Hogeborn
 
15
# Copyright © 2008-2013 Björn Påhlsson
16
16
# 
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
68
68
import binascii
69
69
import tempfile
70
70
import itertools
 
71
import collections
71
72
 
72
73
import dbus
73
74
import dbus.service
78
79
import ctypes.util
79
80
import xml.dom.minidom
80
81
import inspect
81
 
import GnuPGInterface
82
82
 
83
83
try:
84
84
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
88
    except ImportError:
89
89
        SO_BINDTODEVICE = None
90
90
 
91
 
version = "1.5.3"
 
91
version = "1.6.2"
92
92
stored_state_file = "clients.pickle"
93
93
 
94
94
logger = logging.getLogger()
139
139
class PGPEngine(object):
140
140
    """A simple class for OpenPGP symmetric encryption & decryption"""
141
141
    def __init__(self):
142
 
        self.gnupg = GnuPGInterface.GnuPG()
143
142
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
 
        self.gnupg = GnuPGInterface.GnuPG()
145
 
        self.gnupg.options.meta_interactive = False
146
 
        self.gnupg.options.homedir = self.tempdir
147
 
        self.gnupg.options.extra_args.extend(['--force-mdc',
148
 
                                              '--quiet',
149
 
                                              '--no-use-agent'])
 
143
        self.gnupgargs = ['--batch',
 
144
                          '--home', self.tempdir,
 
145
                          '--force-mdc',
 
146
                          '--quiet',
 
147
                          '--no-use-agent']
150
148
    
151
149
    def __enter__(self):
152
150
        return self
153
151
    
154
 
    def __exit__ (self, exc_type, exc_value, traceback):
 
152
    def __exit__(self, exc_type, exc_value, traceback):
155
153
        self._cleanup()
156
154
        return False
157
155
    
174
172
    def password_encode(self, password):
175
173
        # Passphrase can not be empty and can not contain newlines or
176
174
        # NUL bytes.  So we prefix it and hex encode it.
177
 
        return b"mandos" + binascii.hexlify(password)
 
175
        encoded = b"mandos" + binascii.hexlify(password)
 
176
        if len(encoded) > 2048:
 
177
            # GnuPG can't handle long passwords, so encode differently
 
178
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
 
179
                       .replace(b"\n", b"\\n")
 
180
                       .replace(b"\0", b"\\x00"))
 
181
        return encoded
178
182
    
179
183
    def encrypt(self, data, password):
180
 
        self.gnupg.passphrase = self.password_encode(password)
181
 
        with open(os.devnull, "w") as devnull:
182
 
            try:
183
 
                proc = self.gnupg.run(['--symmetric'],
184
 
                                      create_fhs=['stdin', 'stdout'],
185
 
                                      attach_fhs={'stderr': devnull})
186
 
                with contextlib.closing(proc.handles['stdin']) as f:
187
 
                    f.write(data)
188
 
                with contextlib.closing(proc.handles['stdout']) as f:
189
 
                    ciphertext = f.read()
190
 
                proc.wait()
191
 
            except IOError as e:
192
 
                raise PGPError(e)
193
 
        self.gnupg.passphrase = None
 
184
        passphrase = self.password_encode(password)
 
185
        with tempfile.NamedTemporaryFile(dir=self.tempdir
 
186
                                         ) as passfile:
 
187
            passfile.write(passphrase)
 
188
            passfile.flush()
 
189
            proc = subprocess.Popen(['gpg', '--symmetric',
 
190
                                     '--passphrase-file',
 
191
                                     passfile.name]
 
192
                                    + self.gnupgargs,
 
193
                                    stdin = subprocess.PIPE,
 
194
                                    stdout = subprocess.PIPE,
 
195
                                    stderr = subprocess.PIPE)
 
196
            ciphertext, err = proc.communicate(input = data)
 
197
        if proc.returncode != 0:
 
198
            raise PGPError(err)
194
199
        return ciphertext
195
200
    
196
201
    def decrypt(self, data, password):
197
 
        self.gnupg.passphrase = self.password_encode(password)
198
 
        with open(os.devnull, "w") as devnull:
199
 
            try:
200
 
                proc = self.gnupg.run(['--decrypt'],
201
 
                                      create_fhs=['stdin', 'stdout'],
202
 
                                      attach_fhs={'stderr': devnull})
203
 
                with contextlib.closing(proc.handles['stdin']) as f:
204
 
                    f.write(data)
205
 
                with contextlib.closing(proc.handles['stdout']) as f:
206
 
                    decrypted_plaintext = f.read()
207
 
                proc.wait()
208
 
            except IOError as e:
209
 
                raise PGPError(e)
210
 
        self.gnupg.passphrase = None
 
202
        passphrase = self.password_encode(password)
 
203
        with tempfile.NamedTemporaryFile(dir = self.tempdir
 
204
                                         ) as passfile:
 
205
            passfile.write(passphrase)
 
206
            passfile.flush()
 
207
            proc = subprocess.Popen(['gpg', '--decrypt',
 
208
                                     '--passphrase-file',
 
209
                                     passfile.name]
 
210
                                    + self.gnupgargs,
 
211
                                    stdin = subprocess.PIPE,
 
212
                                    stdout = subprocess.PIPE,
 
213
                                    stderr = subprocess.PIPE)
 
214
            decrypted_plaintext, err = proc.communicate(input
 
215
                                                        = data)
 
216
        if proc.returncode != 0:
 
217
            raise PGPError(err)
211
218
        return decrypted_plaintext
212
219
 
213
220
 
233
240
               Used to optionally bind to the specified interface.
234
241
    name: string; Example: 'Mandos'
235
242
    type: string; Example: '_mandos._tcp'.
236
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
243
     See <https://www.iana.org/assignments/service-names-port-numbers>
237
244
    port: integer; what port to announce
238
245
    TXT: list of strings; TXT record for the service
239
246
    domain: string; Domain to publish on, default to .local if empty.
439
446
    runtime_expansions: Allowed attributes for runtime expansion.
440
447
    expires:    datetime.datetime(); time (UTC) when a client will be
441
448
                disabled, or None
 
449
    server_settings: The server_settings dict from main()
442
450
    """
443
451
    
444
452
    runtime_expansions = ("approval_delay", "approval_duration",
446
454
                          "fingerprint", "host", "interval",
447
455
                          "last_approval_request", "last_checked_ok",
448
456
                          "last_enabled", "name", "timeout")
449
 
    client_defaults = { "timeout": "5m",
450
 
                        "extended_timeout": "15m",
451
 
                        "interval": "2m",
 
457
    client_defaults = { "timeout": "PT5M",
 
458
                        "extended_timeout": "PT15M",
 
459
                        "interval": "PT2M",
452
460
                        "checker": "fping -q -- %%(host)s",
453
461
                        "host": "",
454
 
                        "approval_delay": "0s",
455
 
                        "approval_duration": "1s",
 
462
                        "approval_delay": "PT0S",
 
463
                        "approval_duration": "PT1S",
456
464
                        "approved_by_default": "True",
457
465
                        "enabled": "True",
458
466
                        }
519
527
        
520
528
        return settings
521
529
    
522
 
    def __init__(self, settings, name = None):
 
530
    def __init__(self, settings, name = None, server_settings=None):
523
531
        self.name = name
 
532
        if server_settings is None:
 
533
            server_settings = {}
 
534
        self.server_settings = server_settings
524
535
        # adding all client settings
525
536
        for setting, value in settings.iteritems():
526
537
            setattr(self, setting, value)
710
721
                # in normal mode, that is already done by daemon(),
711
722
                # and in debug mode we don't want to.  (Stdin is
712
723
                # always replaced by /dev/null.)
 
724
                # The exception is when not debugging but nevertheless
 
725
                # running in the foreground; use the previously
 
726
                # created wnull.
 
727
                popen_args = {}
 
728
                if (not self.server_settings["debug"]
 
729
                    and self.server_settings["foreground"]):
 
730
                    popen_args.update({"stdout": wnull,
 
731
                                       "stderr": wnull })
713
732
                self.checker = subprocess.Popen(command,
714
733
                                                close_fds=True,
715
 
                                                shell=True, cwd="/")
 
734
                                                shell=True, cwd="/",
 
735
                                                **popen_args)
716
736
            except OSError as error:
717
737
                logger.error("Failed to start subprocess",
718
738
                             exc_info=error)
 
739
                return True
719
740
            self.checker_callback_tag = (gobject.child_watch_add
720
741
                                         (self.checker.pid,
721
742
                                          self.checker_callback,
722
743
                                          data=command))
723
744
            # The checker may have completed before the gobject
724
745
            # watch was added.  Check for this.
725
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
746
            try:
 
747
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
748
            except OSError as error:
 
749
                if error.errno == errno.ECHILD:
 
750
                    # This should never happen
 
751
                    logger.error("Child process vanished",
 
752
                                 exc_info=error)
 
753
                    return True
 
754
                raise
726
755
            if pid:
727
756
                gobject.source_remove(self.checker_callback_tag)
728
757
                self.checker_callback(pid, status, command)
1016
1045
        return xmlstring
1017
1046
 
1018
1047
 
1019
 
def datetime_to_dbus (dt, variant_level=0):
 
1048
def datetime_to_dbus(dt, variant_level=0):
1020
1049
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1021
1050
    if dt is None:
1022
1051
        return dbus.String("", variant_level = variant_level)
1030
1059
    interface names according to the "alt_interface_names" mapping.
1031
1060
    Usage:
1032
1061
    
1033
 
    @alternate_dbus_names({"org.example.Interface":
1034
 
                               "net.example.AlternateInterface"})
 
1062
    @alternate_dbus_interfaces({"org.example.Interface":
 
1063
                                    "net.example.AlternateInterface"})
1035
1064
    class SampleDBusObject(dbus.service.Object):
1036
1065
        @dbus.service.method("org.example.Interface")
1037
1066
        def SampleDBusMethod():
1068
1097
                interface_names.add(alt_interface)
1069
1098
                # Is this a D-Bus signal?
1070
1099
                if getattr(attribute, "_dbus_is_signal", False):
1071
 
                    # Extract the original non-method function by
1072
 
                    # black magic
 
1100
                    # Extract the original non-method undecorated
 
1101
                    # function by black magic
1073
1102
                    nonmethod_func = (dict(
1074
1103
                            zip(attribute.func_code.co_freevars,
1075
1104
                                attribute.__closure__))["func"]
1899
1928
        use_ipv6:       Boolean; to use IPv6 or not
1900
1929
    """
1901
1930
    def __init__(self, server_address, RequestHandlerClass,
1902
 
                 interface=None, use_ipv6=True):
 
1931
                 interface=None, use_ipv6=True, socketfd=None):
 
1932
        """If socketfd is set, use that file descriptor instead of
 
1933
        creating a new one with socket.socket().
 
1934
        """
1903
1935
        self.interface = interface
1904
1936
        if use_ipv6:
1905
1937
            self.address_family = socket.AF_INET6
 
1938
        if socketfd is not None:
 
1939
            # Save the file descriptor
 
1940
            self.socketfd = socketfd
 
1941
            # Save the original socket.socket() function
 
1942
            self.socket_socket = socket.socket
 
1943
            # To implement --socket, we monkey patch socket.socket.
 
1944
            # 
 
1945
            # (When socketserver.TCPServer is a new-style class, we
 
1946
            # could make self.socket into a property instead of monkey
 
1947
            # patching socket.socket.)
 
1948
            # 
 
1949
            # Create a one-time-only replacement for socket.socket()
 
1950
            @functools.wraps(socket.socket)
 
1951
            def socket_wrapper(*args, **kwargs):
 
1952
                # Restore original function so subsequent calls are
 
1953
                # not affected.
 
1954
                socket.socket = self.socket_socket
 
1955
                del self.socket_socket
 
1956
                # This time only, return a new socket object from the
 
1957
                # saved file descriptor.
 
1958
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
1959
            # Replace socket.socket() function with wrapper
 
1960
            socket.socket = socket_wrapper
 
1961
        # The socketserver.TCPServer.__init__ will call
 
1962
        # socket.socket(), which might be our replacement,
 
1963
        # socket_wrapper(), if socketfd was set.
1906
1964
        socketserver.TCPServer.__init__(self, server_address,
1907
1965
                                        RequestHandlerClass)
 
1966
    
1908
1967
    def server_bind(self):
1909
1968
        """This overrides the normal server_bind() function
1910
1969
        to bind to an interface if one was specified, and also NOT to
1918
1977
                try:
1919
1978
                    self.socket.setsockopt(socket.SOL_SOCKET,
1920
1979
                                           SO_BINDTODEVICE,
1921
 
                                           str(self.interface
1922
 
                                               + '\0'))
 
1980
                                           str(self.interface + '\0'))
1923
1981
                except socket.error as error:
1924
1982
                    if error.errno == errno.EPERM:
1925
 
                        logger.error("No permission to"
1926
 
                                     " bind to interface %s",
1927
 
                                     self.interface)
 
1983
                        logger.error("No permission to bind to"
 
1984
                                     " interface %s", self.interface)
1928
1985
                    elif error.errno == errno.ENOPROTOOPT:
1929
1986
                        logger.error("SO_BINDTODEVICE not available;"
1930
1987
                                     " cannot bind to interface %s",
1931
1988
                                     self.interface)
1932
1989
                    elif error.errno == errno.ENODEV:
1933
 
                        logger.error("Interface %s does not"
1934
 
                                     " exist, cannot bind",
1935
 
                                     self.interface)
 
1990
                        logger.error("Interface %s does not exist,"
 
1991
                                     " cannot bind", self.interface)
1936
1992
                    else:
1937
1993
                        raise
1938
1994
        # Only bind(2) the socket if we really need to.
1941
1997
                if self.address_family == socket.AF_INET6:
1942
1998
                    any_address = "::" # in6addr_any
1943
1999
                else:
1944
 
                    any_address = socket.INADDR_ANY
 
2000
                    any_address = "0.0.0.0" # INADDR_ANY
1945
2001
                self.server_address = (any_address,
1946
2002
                                       self.server_address[1])
1947
2003
            elif not self.server_address[1]:
1968
2024
    """
1969
2025
    def __init__(self, server_address, RequestHandlerClass,
1970
2026
                 interface=None, use_ipv6=True, clients=None,
1971
 
                 gnutls_priority=None, use_dbus=True):
 
2027
                 gnutls_priority=None, use_dbus=True, socketfd=None):
1972
2028
        self.enabled = False
1973
2029
        self.clients = clients
1974
2030
        if self.clients is None:
1978
2034
        IPv6_TCPServer.__init__(self, server_address,
1979
2035
                                RequestHandlerClass,
1980
2036
                                interface = interface,
1981
 
                                use_ipv6 = use_ipv6)
 
2037
                                use_ipv6 = use_ipv6,
 
2038
                                socketfd = socketfd)
1982
2039
    def server_activate(self):
1983
2040
        if self.enabled:
1984
2041
            return socketserver.TCPServer.server_activate(self)
2062
2119
        return True
2063
2120
 
2064
2121
 
 
2122
def rfc3339_duration_to_delta(duration):
 
2123
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
2124
    
 
2125
    >>> rfc3339_duration_to_delta("P7D")
 
2126
    datetime.timedelta(7)
 
2127
    >>> rfc3339_duration_to_delta("PT60S")
 
2128
    datetime.timedelta(0, 60)
 
2129
    >>> rfc3339_duration_to_delta("PT60M")
 
2130
    datetime.timedelta(0, 3600)
 
2131
    >>> rfc3339_duration_to_delta("PT24H")
 
2132
    datetime.timedelta(1)
 
2133
    >>> rfc3339_duration_to_delta("P1W")
 
2134
    datetime.timedelta(7)
 
2135
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2136
    datetime.timedelta(0, 330)
 
2137
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2138
    datetime.timedelta(1, 200)
 
2139
    """
 
2140
    
 
2141
    # Parsing an RFC 3339 duration with regular expressions is not
 
2142
    # possible - there would have to be multiple places for the same
 
2143
    # values, like seconds.  The current code, while more esoteric, is
 
2144
    # cleaner without depending on a parsing library.  If Python had a
 
2145
    # built-in library for parsing we would use it, but we'd like to
 
2146
    # avoid excessive use of external libraries.
 
2147
    
 
2148
    # New type for defining tokens, syntax, and semantics all-in-one
 
2149
    Token = collections.namedtuple("Token",
 
2150
                                   ("regexp", # To match token; if
 
2151
                                              # "value" is not None,
 
2152
                                              # must have a "group"
 
2153
                                              # containing digits
 
2154
                                    "value",  # datetime.timedelta or
 
2155
                                              # None
 
2156
                                    "followers")) # Tokens valid after
 
2157
                                                  # this token
 
2158
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
2159
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
2160
    token_end = Token(re.compile(r"$"), None, frozenset())
 
2161
    token_second = Token(re.compile(r"(\d+)S"),
 
2162
                         datetime.timedelta(seconds=1),
 
2163
                         frozenset((token_end,)))
 
2164
    token_minute = Token(re.compile(r"(\d+)M"),
 
2165
                         datetime.timedelta(minutes=1),
 
2166
                         frozenset((token_second, token_end)))
 
2167
    token_hour = Token(re.compile(r"(\d+)H"),
 
2168
                       datetime.timedelta(hours=1),
 
2169
                       frozenset((token_minute, token_end)))
 
2170
    token_time = Token(re.compile(r"T"),
 
2171
                       None,
 
2172
                       frozenset((token_hour, token_minute,
 
2173
                                  token_second)))
 
2174
    token_day = Token(re.compile(r"(\d+)D"),
 
2175
                      datetime.timedelta(days=1),
 
2176
                      frozenset((token_time, token_end)))
 
2177
    token_month = Token(re.compile(r"(\d+)M"),
 
2178
                        datetime.timedelta(weeks=4),
 
2179
                        frozenset((token_day, token_end)))
 
2180
    token_year = Token(re.compile(r"(\d+)Y"),
 
2181
                       datetime.timedelta(weeks=52),
 
2182
                       frozenset((token_month, token_end)))
 
2183
    token_week = Token(re.compile(r"(\d+)W"),
 
2184
                       datetime.timedelta(weeks=1),
 
2185
                       frozenset((token_end,)))
 
2186
    token_duration = Token(re.compile(r"P"), None,
 
2187
                           frozenset((token_year, token_month,
 
2188
                                      token_day, token_time,
 
2189
                                      token_week))),
 
2190
    # Define starting values
 
2191
    value = datetime.timedelta() # Value so far
 
2192
    found_token = None
 
2193
    followers = frozenset(token_duration,) # Following valid tokens
 
2194
    s = duration                # String left to parse
 
2195
    # Loop until end token is found
 
2196
    while found_token is not token_end:
 
2197
        # Search for any currently valid tokens
 
2198
        for token in followers:
 
2199
            match = token.regexp.match(s)
 
2200
            if match is not None:
 
2201
                # Token found
 
2202
                if token.value is not None:
 
2203
                    # Value found, parse digits
 
2204
                    factor = int(match.group(1), 10)
 
2205
                    # Add to value so far
 
2206
                    value += factor * token.value
 
2207
                # Strip token from string
 
2208
                s = token.regexp.sub("", s, 1)
 
2209
                # Go to found token
 
2210
                found_token = token
 
2211
                # Set valid next tokens
 
2212
                followers = found_token.followers
 
2213
                break
 
2214
        else:
 
2215
            # No currently valid tokens were found
 
2216
            raise ValueError("Invalid RFC 3339 duration")
 
2217
    # End token found
 
2218
    return value
 
2219
 
 
2220
 
2065
2221
def string_to_delta(interval):
2066
2222
    """Parse a string and return a datetime.timedelta
2067
2223
    
2078
2234
    >>> string_to_delta('5m 30s')
2079
2235
    datetime.timedelta(0, 330)
2080
2236
    """
 
2237
    
 
2238
    try:
 
2239
        return rfc3339_duration_to_delta(interval)
 
2240
    except ValueError:
 
2241
        pass
 
2242
    
2081
2243
    timevalue = datetime.timedelta(0)
2082
2244
    for s in interval.split():
2083
2245
        try:
2146
2308
                        help="Run self-test")
2147
2309
    parser.add_argument("--debug", action="store_true",
2148
2310
                        help="Debug mode; run in foreground and log"
2149
 
                        " to terminal")
 
2311
                        " to terminal", default=None)
2150
2312
    parser.add_argument("--debuglevel", metavar="LEVEL",
2151
2313
                        help="Debug level for stdout output")
2152
2314
    parser.add_argument("--priority", help="GnuTLS"
2159
2321
                        " files")
2160
2322
    parser.add_argument("--no-dbus", action="store_false",
2161
2323
                        dest="use_dbus", help="Do not provide D-Bus"
2162
 
                        " system bus interface")
 
2324
                        " system bus interface", default=None)
2163
2325
    parser.add_argument("--no-ipv6", action="store_false",
2164
 
                        dest="use_ipv6", help="Do not use IPv6")
 
2326
                        dest="use_ipv6", help="Do not use IPv6",
 
2327
                        default=None)
2165
2328
    parser.add_argument("--no-restore", action="store_false",
2166
2329
                        dest="restore", help="Do not restore stored"
2167
 
                        " state")
 
2330
                        " state", default=None)
 
2331
    parser.add_argument("--socket", type=int,
 
2332
                        help="Specify a file descriptor to a network"
 
2333
                        " socket to use instead of creating one")
2168
2334
    parser.add_argument("--statedir", metavar="DIR",
2169
2335
                        help="Directory to save/restore state in")
 
2336
    parser.add_argument("--foreground", action="store_true",
 
2337
                        help="Run in foreground", default=None)
2170
2338
    
2171
2339
    options = parser.parse_args()
2172
2340
    
2181
2349
                        "port": "",
2182
2350
                        "debug": "False",
2183
2351
                        "priority":
2184
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
2352
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2185
2353
                        "servicename": "Mandos",
2186
2354
                        "use_dbus": "True",
2187
2355
                        "use_ipv6": "True",
2188
2356
                        "debuglevel": "",
2189
2357
                        "restore": "True",
2190
 
                        "statedir": "/var/lib/mandos"
 
2358
                        "socket": "",
 
2359
                        "statedir": "/var/lib/mandos",
 
2360
                        "foreground": "False",
2191
2361
                        }
2192
2362
    
2193
2363
    # Parse config file for server-global settings
2198
2368
    # Convert the SafeConfigParser object to a dict
2199
2369
    server_settings = server_config.defaults()
2200
2370
    # Use the appropriate methods on the non-string config options
2201
 
    for option in ("debug", "use_dbus", "use_ipv6"):
 
2371
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2202
2372
        server_settings[option] = server_config.getboolean("DEFAULT",
2203
2373
                                                           option)
2204
2374
    if server_settings["port"]:
2205
2375
        server_settings["port"] = server_config.getint("DEFAULT",
2206
2376
                                                       "port")
 
2377
    if server_settings["socket"]:
 
2378
        server_settings["socket"] = server_config.getint("DEFAULT",
 
2379
                                                         "socket")
 
2380
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
2381
        # over with an opened os.devnull.  But we don't want this to
 
2382
        # happen with a supplied network socket.
 
2383
        if 0 <= server_settings["socket"] <= 2:
 
2384
            server_settings["socket"] = os.dup(server_settings
 
2385
                                               ["socket"])
2207
2386
    del server_config
2208
2387
    
2209
2388
    # Override the settings from the config file with command line
2211
2390
    for option in ("interface", "address", "port", "debug",
2212
2391
                   "priority", "servicename", "configdir",
2213
2392
                   "use_dbus", "use_ipv6", "debuglevel", "restore",
2214
 
                   "statedir"):
 
2393
                   "statedir", "socket", "foreground"):
2215
2394
        value = getattr(options, option)
2216
2395
        if value is not None:
2217
2396
            server_settings[option] = value
2220
2399
    for option in server_settings.keys():
2221
2400
        if type(server_settings[option]) is str:
2222
2401
            server_settings[option] = unicode(server_settings[option])
 
2402
    # Force all boolean options to be boolean
 
2403
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
2404
                   "foreground"):
 
2405
        server_settings[option] = bool(server_settings[option])
 
2406
    # Debug implies foreground
 
2407
    if server_settings["debug"]:
 
2408
        server_settings["foreground"] = True
2223
2409
    # Now we have our good server settings in "server_settings"
2224
2410
    
2225
2411
    ##################################################################
2231
2417
    use_ipv6 = server_settings["use_ipv6"]
2232
2418
    stored_state_path = os.path.join(server_settings["statedir"],
2233
2419
                                     stored_state_file)
 
2420
    foreground = server_settings["foreground"]
2234
2421
    
2235
2422
    if debug:
2236
2423
        initlogger(debug, logging.DEBUG)
2265
2452
                              use_ipv6=use_ipv6,
2266
2453
                              gnutls_priority=
2267
2454
                              server_settings["priority"],
2268
 
                              use_dbus=use_dbus)
2269
 
    if not debug:
2270
 
        pidfilename = "/var/run/mandos.pid"
 
2455
                              use_dbus=use_dbus,
 
2456
                              socketfd=(server_settings["socket"]
 
2457
                                        or None))
 
2458
    if not foreground:
 
2459
        pidfilename = "/run/mandos.pid"
 
2460
        if not os.path.isdir("/run/."):
 
2461
            pidfilename = "/var/run/mandos.pid"
 
2462
        pidfile = None
2271
2463
        try:
2272
2464
            pidfile = open(pidfilename, "w")
2273
2465
        except IOError as e:
2312
2504
            os.close(null)
2313
2505
    
2314
2506
    # Need to fork before connecting to D-Bus
2315
 
    if not debug:
 
2507
    if not foreground:
2316
2508
        # Close all input and output, do double fork, etc.
2317
2509
        daemon()
2318
2510
    
 
2511
    # multiprocessing will use threads, so before we use gobject we
 
2512
    # need to inform gobject that threads will be used.
2319
2513
    gobject.threads_init()
2320
2514
    
2321
2515
    global main_loop
2356
2550
    old_client_settings = {}
2357
2551
    clients_data = {}
2358
2552
    
 
2553
    # This is used to redirect stdout and stderr for checker processes
 
2554
    global wnull
 
2555
    wnull = open(os.devnull, "w") # A writable /dev/null
 
2556
    # Only used if server is running in foreground but not in debug
 
2557
    # mode
 
2558
    if debug or not foreground:
 
2559
        wnull.close()
 
2560
    
2359
2561
    # Get client data and settings from last running state.
2360
2562
    if server_settings["restore"]:
2361
2563
        try:
2377
2579
    
2378
2580
    with PGPEngine() as pgp:
2379
2581
        for client_name, client in clients_data.iteritems():
 
2582
            # Skip removed clients
 
2583
            if client_name not in client_settings:
 
2584
                continue
 
2585
            
2380
2586
            # Decide which value to use after restoring saved state.
2381
2587
            # We have three different values: Old config file,
2382
2588
            # new config file, and saved state.
2444
2650
    # Create all client objects
2445
2651
    for client_name, client in clients_data.iteritems():
2446
2652
        tcp_server.clients[client_name] = client_class(
2447
 
            name = client_name, settings = client)
 
2653
            name = client_name, settings = client,
 
2654
            server_settings = server_settings)
2448
2655
    
2449
2656
    if not tcp_server.clients:
2450
2657
        logger.warning("No clients defined")
2451
2658
    
2452
 
    if not debug:
2453
 
        try:
2454
 
            with pidfile:
2455
 
                pid = os.getpid()
2456
 
                pidfile.write(str(pid) + "\n".encode("utf-8"))
2457
 
            del pidfile
2458
 
        except IOError:
2459
 
            logger.error("Could not write to file %r with PID %d",
2460
 
                         pidfilename, pid)
2461
 
        except NameError:
2462
 
            # "pidfile" was never created
2463
 
            pass
 
2659
    if not foreground:
 
2660
        if pidfile is not None:
 
2661
            try:
 
2662
                with pidfile:
 
2663
                    pid = os.getpid()
 
2664
                    pidfile.write(str(pid) + "\n".encode("utf-8"))
 
2665
            except IOError:
 
2666
                logger.error("Could not write to file %r with PID %d",
 
2667
                             pidfilename, pid)
 
2668
        del pidfile
2464
2669
        del pidfilename
2465
2670
    
2466
2671
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2535
2740
        service.cleanup()
2536
2741
        
2537
2742
        multiprocessing.active_children()
 
2743
        wnull.close()
2538
2744
        if not (tcp_server.clients or client_settings):
2539
2745
            return
2540
2746
        
2552
2758
                # A list of attributes that can not be pickled
2553
2759
                # + secret.
2554
2760
                exclude = set(("bus", "changedstate", "secret",
2555
 
                               "checker"))
 
2761
                               "checker", "server_settings"))
2556
2762
                for name, typ in (inspect.getmembers
2557
2763
                                  (dbus.service.Object)):
2558
2764
                    exclude.add(name)