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# -*- 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 -*-
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# -*- mode: python; coding: utf-8 -*-
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# Mandos server - give out binary blobs to connecting clients.
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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# Everything else is
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# Copyright © 2008-2020 Teddy Hogeborn
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# Copyright © 2008-2020 Björn Påhlsson
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# This file is part of Mandos.
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# Mandos is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2016 Teddy Hogeborn
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# Copyright © 2008-2016 Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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19
# the Free Software Foundation, either version 3 of the License, or
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20
# (at your option) any later version.
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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25
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with Mandos. 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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# Contact the authors at <mandos@recompile.se>.
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from __future__ import (division, absolute_import, print_function,
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import xml.dom.minidom
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if sys.version_info.major == 2:
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# Add collections.abc.Callable if it does not exist
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collections.abc.Callable
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except AttributeError:
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Callable = collections.Callable
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collections.abc = abc
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# Add shlex.quote if it does not exist
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except AttributeError:
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shlex.quote = re.escape
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# Show warnings by default
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if not sys.warnoptions:
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warnings.simplefilter("default")
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# Try to find the value of SO_BINDTODEVICE:
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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
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# newer, and it is also the most natural place for it:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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except AttributeError:
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# This is where SO_BINDTODEVICE was up to and including Python
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from IN import SO_BINDTODEVICE
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except ImportError:
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# In Python 2.7 it seems to have been removed entirely.
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# Try running the C preprocessor:
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cc = subprocess.Popen(["cc", "--language=c", "-E",
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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stdout = cc.communicate(
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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
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except (OSError, ValueError, IndexError):
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SO_BINDTODEVICE = None
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if sys.version_info < (3, 2):
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configparser.Configparser = configparser.SafeConfigParser
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SO_BINDTODEVICE = None
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if sys.version_info.major == 2:
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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logging.captureWarnings(True) # Show warnings via the logging system
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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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except (OSError, AttributeError):
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111
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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'--passphrase-file',
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+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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ciphertext, err = proc.communicate(input=data)
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
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if proc.returncode != 0:
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raise PGPError(err)
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return ciphertext
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def decrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(
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dir=self.tempdir) as passfile:
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dir = self.tempdir) as passfile:
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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--decrypt',
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'--passphrase-file',
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+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input=data)
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input = data)
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if proc.returncode != 0:
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raise PGPError(err)
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return decrypted_plaintext
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256
# Pretend that we have an Avahi module
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"""This isn't so much a class as it is a module-like namespace."""
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IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
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PROTO_INET = 0 # avahi-common/address.h
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PROTO_INET6 = 1 # avahi-common/address.h
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"""This isn't so much a class as it is a module-like namespace.
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It is instantiated once, and simulates having an Avahi module."""
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IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
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PROTO_INET = 0 # avahi-common/address.h
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PROTO_INET6 = 1 # avahi-common/address.h
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DBUS_NAME = "org.freedesktop.Avahi"
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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
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DBUS_PATH_SERVER = "/"
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def string_array_to_txt_array(t):
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def string_array_to_txt_array(self, t):
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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
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for s in t), signature="ay")
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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class AvahiServiceToSyslog(AvahiService):
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def rename(self, *args, **kwargs):
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"""Add the new name to the syslog messages"""
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ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
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ret = AvahiService.rename(self, *args, **kwargs)
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syslogger.setFormatter(logging.Formatter(
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'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
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.format(self.name)))
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# Pretend that we have a GnuTLS module
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"""This isn't so much a class as it is a module-like namespace."""
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library = ctypes.util.find_library("gnutls")
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library = ctypes.util.find_library("gnutls-deb0")
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_library = ctypes.cdll.LoadLibrary(library)
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class GnuTLS(object):
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"""This isn't so much a class as it is a module-like namespace.
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It is instantiated once, and simulates having a GnuTLS module."""
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_library = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("gnutls"))
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_need_version = b"3.3.0"
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
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if GnuTLS.check_version(self._need_version) is None:
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raise GnuTLS.Error("Needs GnuTLS {} or later"
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.format(self._need_version))
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# Unless otherwise indicated, the constants and types below are
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# all from the gnutls/gnutls.h C header file.
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E_INTERRUPTED = -52
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CRD_CERTIFICATE = 1
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509
E_NO_CERTIFICATE_FOUND = -49
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
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510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
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class session_int(ctypes.Structure):
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session_t = ctypes.POINTER(session_int)
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class certificate_credentials_st(ctypes.Structure):
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certificate_credentials_t = ctypes.POINTER(
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certificate_credentials_st)
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certificate_type_t = ctypes.c_int
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class datum_t(ctypes.Structure):
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_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
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('size', ctypes.c_uint)]
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class openpgp_crt_int(ctypes.Structure):
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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
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credentials_type_t = ctypes.c_int
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transport_ptr_t = ctypes.c_void_p
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close_request_t = ctypes.c_int
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534
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
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# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
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540
# Default usage is by a message string, but if a return
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# code is passed, convert it to a string with
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# gnutls.strerror()
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if message is None and code is not None:
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message = gnutls.strerror(code)
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return super(gnutls.Error, self).__init__(
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
600
549
class CertificateSecurityError(Error):
553
class Credentials(object):
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554
def __init__(self):
606
555
self._c_object = gnutls.certificate_credentials_t()
607
556
gnutls.certificate_allocate_credentials(
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557
ctypes.byref(self._c_object))
609
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self.type = gnutls.CRD_CERTIFICATE
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def __del__(self):
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gnutls.certificate_free_credentials(self._c_object)
615
def __init__(self, socket, credentials=None):
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
616
565
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
624
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gnutls.set_default_priority(self._c_object)
625
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gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
569
gnutls.handshake_set_private_extensions(self._c_object,
668
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return _error_code(result)
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result = func(*arguments)
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# Unless otherwise indicated, the function declarations below are
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# all from the gnutls/gnutls.h C header file.
676
619
priority_set_direct = _library.gnutls_priority_set_direct
677
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priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
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ctypes.POINTER(ctypes.c_char_p)]
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priority_set_direct.restype = _error_code
681
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init = _library.gnutls_init
682
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init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
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init.restype = _error_code
685
628
set_default_priority = _library.gnutls_set_default_priority
686
629
set_default_priority.argtypes = [session_t]
687
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set_default_priority.restype = _error_code
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record_send = _library.gnutls_record_send
690
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record_send.argtypes = [session_t, ctypes.c_void_p,
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record_send.restype = ctypes.c_ssize_t
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record_send.errcheck = _retry_on_error
695
638
certificate_allocate_credentials = (
696
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_library.gnutls_certificate_allocate_credentials)
697
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certificate_allocate_credentials.argtypes = [
698
641
ctypes.POINTER(certificate_credentials_t)]
699
642
certificate_allocate_credentials.restype = _error_code
701
644
certificate_free_credentials = (
702
645
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
705
647
certificate_free_credentials.restype = None
707
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handshake_set_private_extensions = (
708
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_library.gnutls_handshake_set_private_extensions)
709
651
handshake_set_private_extensions.argtypes = [session_t,
711
653
handshake_set_private_extensions.restype = None
713
655
credentials_set = _library.gnutls_credentials_set
714
656
credentials_set.argtypes = [session_t, credentials_type_t,
716
658
credentials_set.restype = _error_code
718
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strerror = _library.gnutls_strerror
719
661
strerror.argtypes = [ctypes.c_int]
720
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strerror.restype = ctypes.c_char_p
722
664
certificate_type_get = _library.gnutls_certificate_type_get
723
665
certificate_type_get.argtypes = [session_t]
724
666
certificate_type_get.restype = _error_code
726
668
certificate_get_peers = _library.gnutls_certificate_get_peers
727
669
certificate_get_peers.argtypes = [session_t,
728
670
ctypes.POINTER(ctypes.c_uint)]
729
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
673
global_set_log_level = _library.gnutls_global_set_log_level
732
674
global_set_log_level.argtypes = [ctypes.c_int]
733
675
global_set_log_level.restype = None
735
677
global_set_log_function = _library.gnutls_global_set_log_function
736
678
global_set_log_function.argtypes = [log_func]
737
679
global_set_log_function.restype = None
739
681
deinit = _library.gnutls_deinit
740
682
deinit.argtypes = [session_t]
741
683
deinit.restype = None
743
685
handshake = _library.gnutls_handshake
744
686
handshake.argtypes = [session_t]
745
687
handshake.restype = _error_code
746
688
handshake.errcheck = _retry_on_error
748
690
transport_set_ptr = _library.gnutls_transport_set_ptr
749
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
692
transport_set_ptr.restype = None
752
694
bye = _library.gnutls_bye
753
695
bye.argtypes = [session_t, close_request_t]
754
696
bye.restype = _error_code
755
697
bye.errcheck = _retry_on_error
757
699
check_version = _library.gnutls_check_version
758
700
check_version.argtypes = [ctypes.c_char_p]
759
701
check_version.restype = ctypes.c_char_p
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
771
class pubkey_st(ctypes.Structure):
773
pubkey_t = ctypes.POINTER(pubkey_st)
775
x509_crt_fmt_t = ctypes.c_int
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
785
pubkey_import.restype = _error_code
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
797
# All the function declarations below are from gnutls/openpgp.h
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
807
openpgp_crt_import.restype = _error_code
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
824
openpgp_crt_get_fingerprint.restype = _error_code
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
703
# All the function declarations below are from gnutls/openpgp.h
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
713
openpgp_crt_import.restype = _error_code
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
730
openpgp_crt_get_fingerprint.restype = _error_code
831
732
# Remove non-public functions
832
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
835
737
def call_pipe(connection, # : multiprocessing.Connection
836
738
func, *args, **kwargs):
837
739
"""This function is meant to be called by multiprocessing.Process
839
741
This function runs func(*args, **kwargs), and writes the resulting
840
742
return value on the provided multiprocessing.Connection.
842
744
connection.send(func(*args, **kwargs))
843
745
connection.close()
747
class Client(object):
847
748
"""A representation of a client host served by this server.
850
751
approved: bool(); 'None' if not yet approved/disapproved
851
752
approval_delay: datetime.timedelta(); Time to wait for approval
852
753
approval_duration: datetime.timedelta(); Duration of one approval
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
754
checker: subprocess.Popen(); a running checker process used
755
to see if the client lives.
756
'None' if no process is running.
856
757
checker_callback_tag: a GLib event source tag, or None
857
758
checker_command: string; External command which is run to check
858
759
if client lives. %() expansions are done at
1535
1428
exc_info=error)
1536
1429
return xmlstring
1540
1432
dbus.OBJECT_MANAGER_IFACE
1541
1433
except AttributeError:
1542
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1545
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
1437
"""A D-Bus object with an ObjectManager.
1548
1439
Classes inheriting from this exposes the standard
1549
1440
GetManagedObjects call and the InterfacesAdded and
1550
1441
InterfacesRemoved signals on the standard
1551
1442
"org.freedesktop.DBus.ObjectManager" interface.
1553
1444
Note: No signals are sent automatically; they must be sent
1556
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1448
out_signature = "a{oa{sa{sv}}}")
1558
1449
def GetManagedObjects(self):
1559
1450
"""This function must be overridden"""
1560
1451
raise NotImplementedError()
1562
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1454
signature = "oa{sa{sv}}")
1564
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1568
1459
def InterfacesRemoved(self, object_path, interfaces):
1571
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1575
1466
def Introspect(self, object_path, connection):
1576
1467
"""Overloading of standard D-Bus method.
1578
1469
Override return argument name of GetManagedObjects to be
1579
1470
"objpath_interfaces_and_properties"
2271
2152
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
2153
"""A class to handle client connections.
2274
2155
Instantiated once for each connection to handle it.
2275
2156
Note: This will run in its own forked process."""
2277
2158
def handle(self):
2278
2159
with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
2160
logger.info("TCP connection from: %s",
2280
2161
str(self.client_address))
2281
2162
logger.debug("Pipe FD: %d",
2282
2163
self.server.child_pipe.fileno())
2284
2165
session = gnutls.ClientSession(self.request)
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
# "+AES-256-CBC", "+SHA1",
2169
# "+COMP-NULL", "+CTYPE-OPENPGP",
2290
2171
# Use a fallback default, since this MUST be set.
2291
2172
priority = self.server.gnutls_priority
2292
2173
if priority is None:
2293
2174
priority = "NORMAL"
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2175
gnutls.priority_set_direct(session._c_object, priority,
2298
2178
# Start communication using the Mandos protocol
2299
2179
# Get protocol number
2300
2180
line = self.request.makefile().readline()
2522
class MultiprocessingMixIn:
2345
class MultiprocessingMixIn(object):
2523
2346
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2525
2348
def sub_process_main(self, request, address):
2527
2350
self.finish_request(request, address)
2528
2351
except Exception:
2529
2352
self.handle_error(request, address)
2530
2353
self.close_request(request)
2532
2355
def process_request(self, request, address):
2533
2356
"""Start a new process to process the request."""
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
2357
proc = multiprocessing.Process(target = self.sub_process_main,
2358
args = (request, address))
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2363
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2541
2364
""" adds a pipe to the MixIn """
2543
2366
def process_request(self, request, client_address):
2544
2367
"""Overrides and wraps the original process_request().
2546
2369
This function creates a new pipe in self.pipe
2548
2371
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2550
2373
proc = MultiprocessingMixIn.process_request(self, request,
2551
2374
client_address)
2552
2375
self.child_pipe.close()
2553
2376
self.add_pipe(parent_pipe, proc)
2555
2378
def add_pipe(self, parent_pipe, proc):
2556
2379
"""Dummy function; override as necessary"""
2557
2380
raise NotImplementedError()
2560
2383
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2561
socketserver.TCPServer):
2384
socketserver.TCPServer, object):
2562
2385
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2565
2388
enabled: Boolean; whether this server is activated yet
2566
2389
interface: None or a network interface name (string)
2567
2390
use_ipv6: Boolean; to use IPv6 or not
2570
2393
def __init__(self, server_address, RequestHandlerClass,
2571
2394
interface=None,
2606
2428
# socket_wrapper(), if socketfd was set.
2607
2429
socketserver.TCPServer.__init__(self, server_address,
2608
2430
RequestHandlerClass)
2610
2432
def server_bind(self):
2611
2433
"""This overrides the normal server_bind() function
2612
2434
to bind to an interface if one was specified, and also NOT to
2613
2435
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2615
2436
if self.interface is not None:
2616
2437
if SO_BINDTODEVICE is None:
2617
# Fall back to a hard-coded value which seems to be
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2438
logger.error("SO_BINDTODEVICE does not exist;"
2439
" cannot bind to interface %s",
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
2446
except socket.error as error:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
elif error.errno == errno.ENOPROTOOPT:
2451
logger.error("SO_BINDTODEVICE not available;"
2452
" cannot bind to interface %s",
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
2638
2459
# Only bind(2) the socket if we really need to.
2639
2460
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2642
2461
if not self.server_address[0]:
2643
2462
if self.address_family == socket.AF_INET6:
2644
any_address = "::" # in6addr_any
2463
any_address = "::" # in6addr_any
2646
any_address = "0.0.0.0" # INADDR_ANY
2465
any_address = "0.0.0.0" # INADDR_ANY
2647
2466
self.server_address = (any_address,
2648
2467
self.server_address[1])
2649
2468
elif not self.server_address[1]:
2683
2502
self.gnutls_priority = gnutls_priority
2684
2503
IPv6_TCPServer.__init__(self, server_address,
2685
2504
RequestHandlerClass,
2686
interface=interface,
2505
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2690
2509
def server_activate(self):
2691
2510
if self.enabled:
2692
2511
return socketserver.TCPServer.server_activate(self)
2694
2513
def enable(self):
2695
2514
self.enabled = True
2697
2516
def add_pipe(self, parent_pipe, proc):
2698
2517
# Call "handle_ipc" for both data and EOF events
2699
2518
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2702
2521
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2522
parent_pipe = parent_pipe,
2706
2525
def handle_ipc(self, source, condition,
2707
2526
parent_pipe=None,
2709
2528
client_object=None):
2710
2529
# error, or the other end of multiprocessing.Pipe has closed
2711
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2712
2531
# Wait for other process to exit
2716
2535
# Read a request from the child
2717
2536
request = parent_pipe.recv()
2718
2537
command = request[0]
2720
2539
if command == 'init':
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2541
address = request[2]
2725
2543
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2728
if key_id and c.key_id == key_id:
2731
if fpr and c.fingerprint == fpr:
2544
if c.fingerprint == fpr:
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2548
logger.info("Client not found for fingerprint: %s, ad"
2549
"dress: %s", fpr, address)
2737
2550
if self.use_dbus:
2738
2551
# Emit D-Bus signal
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2552
mandos_dbus_service.ClientNotFound(fpr,
2741
2554
parent_pipe.send(False)
2744
2557
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2747
2560
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2750
client_object=client))
2561
parent_pipe = parent_pipe,
2563
client_object = client))
2751
2564
parent_pipe.send(True)
2752
2565
# remove the old hook in favor of the new above hook on
2756
2569
funcname = request[1]
2757
2570
args = request[2]
2758
2571
kwargs = request[3]
2760
2573
parent_pipe.send(('data', getattr(client_object,
2761
2574
funcname)(*args,
2764
2577
if command == 'getattr':
2765
2578
attrname = request[1]
2766
2579
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2580
collections.Callable):
2768
2581
parent_pipe.send(('function', ))
2770
2583
parent_pipe.send((
2771
2584
'data', client_object.__getattribute__(attrname)))
2773
2586
if command == 'setattr':
2774
2587
attrname = request[1]
2775
2588
value = request[2]
2776
2589
setattr(client_object, attrname, value)
2781
2594
def rfc3339_duration_to_delta(duration):
2782
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2800
2613
# Parsing an RFC 3339 duration with regular expressions is not
2801
2614
# possible - there would have to be multiple places for the same
2802
2615
# values, like seconds. The current code, while more esoteric, is
2803
2616
# cleaner without depending on a parsing library. If Python had a
2804
2617
# built-in library for parsing we would use it, but we'd like to
2805
2618
# avoid excessive use of external libraries.
2807
2620
# New type for defining tokens, syntax, and semantics all-in-one
2808
2621
Token = collections.namedtuple("Token", (
2809
2622
"regexp", # To match token; if "value" is not None, must have
2996
2806
parser.add_argument("--no-zeroconf", action="store_false",
2997
2807
dest="zeroconf", help="Do not use Zeroconf",
3000
2810
options = parser.parse_args()
2814
fail_count, test_count = doctest.testmod()
2815
sys.exit(os.EX_OK if fail_count == 0 else 1)
3002
2817
# Default values for config file for server-global settings
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3013
"priority": priority,
3014
"servicename": "Mandos",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
2818
server_defaults = { "interface": "",
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2825
"servicename": "Mandos",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
3026
2836
# Parse config file for server-global settings
3027
server_config = configparser.ConfigParser(server_defaults)
2837
server_config = configparser.SafeConfigParser(server_defaults)
3028
2838
del server_defaults
3029
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2840
# Convert the SafeConfigParser object to a dict
3031
2841
server_settings = server_config.defaults()
3032
2842
# Use the appropriate methods on the non-string config options
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3035
2844
server_settings[option] = server_config.getboolean("DEFAULT",
3037
2846
if server_settings["port"]:
3210
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
3020
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3216
3025
if server_settings["interface"]:
3217
3026
service.interface = if_nametoindex(
3218
3027
server_settings["interface"].encode("utf-8"))
3220
3029
global multiprocessing_manager
3221
3030
multiprocessing_manager = multiprocessing.Manager()
3223
3032
client_class = Client
3225
client_class = functools.partial(ClientDBus, bus=bus)
3034
client_class = functools.partial(ClientDBus, bus = bus)
3227
3036
client_settings = Client.config_parser(client_config)
3228
3037
old_client_settings = {}
3229
3038
clients_data = {}
3231
3040
# This is used to redirect stdout and stderr for checker processes
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3234
3043
# Only used if server is running in foreground but not in debug
3236
3045
if debug or not foreground:
3239
3048
# Get client data and settings from last running state.
3240
3049
if server_settings["restore"]:
3242
3051
with open(stored_state_path, "rb") as stored_state:
3243
if sys.version_info.major == 2:
3052
if sys.version_info.major == 2:
3244
3053
clients_data, old_client_settings = pickle.load(
3247
3056
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3256
bytes_clients_data.items()}
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3065
bytes_clients_data.items() }
3257
3066
del bytes_clients_data
3258
3067
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3262
clients_data[key].items()}
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3071
clients_data[key].items() }
3263
3072
clients_data[key] = value
3264
3073
# .client_structure
3265
3074
value["client_structure"] = [
3266
3075
(s.decode("utf-8")
3267
3076
if isinstance(s, bytes)
3268
3077
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3078
value["client_structure"] ]
3080
for k in ("name", "host"):
3272
3081
if isinstance(value[k], bytes):
3273
3082
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3083
## old_client_settings
3280
3085
old_client_settings = {
3281
3086
(key.decode("utf-8")
3282
3087
if isinstance(key, bytes)
3283
3088
else key): value
3284
3089
for key, value in
3285
bytes_old_client_settings.items()}
3090
bytes_old_client_settings.items() }
3286
3091
del bytes_old_client_settings
3287
# .host and .checker_command
3288
3093
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3293
3097
os.remove(stored_state_path)
3294
3098
except IOError as e:
3295
3099
if e.errno == errno.ENOENT: