Code cleaned and modules renamed
*Radicale is probably broken now*
This commit is contained in:
86
radicale/auth/IMAP.py
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86
radicale/auth/IMAP.py
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2012 Daniel Aleksandersen
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#
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# This library 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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IMAP authentication.
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Secure authentication based on the ``imaplib`` module.
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Validating users against a modern IMAP4rev1 server that awaits STARTTLS on
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port 143. Legacy SSL (often on legacy port 993) is deprecated and thus
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unsupported. STARTTLS is enforced except if host is ``localhost`` as
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passwords are sent in PLAIN.
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Python 3.2 or newer is required for TLS.
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"""
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import imaplib
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from radicale import config, log
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IMAP_SERVER = config.get("auth", "imap_auth_host_name")
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IMAP_SERVER_PORT = config.get("auth", "imap_auth_host_port")
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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log.LOGGER.debug(
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"[IMAP AUTH] Connecting to %s:%s." % (IMAP_SERVER, IMAP_SERVER_PORT,))
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connection = imaplib.IMAP4(host=IMAP_SERVER, port=IMAP_SERVER_PORT)
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server_is_local = (IMAP_SERVER == "localhost")
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connection_is_secure = False
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try:
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connection.starttls()
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log.LOGGER.debug("IMAP server connection changed to TLS.")
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connection_is_secure = True
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except AttributeError:
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if not server_is_local:
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log.LOGGER.error(
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"Python 3.2 or newer is required for IMAP + TLS.")
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except (imaplib.IMAP4.error, imaplib.IMAP4.abort) as exception:
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log.LOGGER.warning(
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"IMAP server at %s failed to accept TLS connection "
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"because of: %s" % (IMAP_SERVER, exception))
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if server_is_local and not connection_is_secure:
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log.LOGGER.warning(
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"IMAP server is local. "
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"Will allow transmitting unencrypted credentials.")
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if connection_is_secure or server_is_local:
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try:
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connection.login(user, password)
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connection.logout()
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log.LOGGER.debug(
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"Authenticated IMAP user %s "
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"via %s." % (user, IMAP_SERVER))
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return True
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except (imaplib.IMAP4.error, imaplib.IMAP4.abort) as exception:
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log.LOGGER.error(
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"IMAP server could not authenticate user %s "
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"because of: %s" % (user, exception))
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else:
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log.LOGGER.critical(
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"IMAP server did not support TLS and is not ``localhost``. "
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"Refusing to transmit passwords under these conditions. "
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"Authentication attempt aborted.")
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return False # authentication failed
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79
radicale/auth/LDAP.py
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79
radicale/auth/LDAP.py
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2011 Corentin Le Bail
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# Copyright © 2011-2012 Guillaume Ayoub
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#
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# This library 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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LDAP authentication.
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Authentication based on the ``python-ldap`` module
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(http://www.python-ldap.org/).
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"""
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import ldap
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from radicale import config, log
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BASE = config.get("auth", "ldap_base")
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ATTRIBUTE = config.get("auth", "ldap_attribute")
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FILTER = config.get("auth", "ldap_filter")
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CONNEXION = ldap.initialize(config.get("auth", "ldap_url"))
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BINDDN = config.get("auth", "ldap_binddn")
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PASSWORD = config.get("auth", "ldap_password")
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SCOPE = getattr(ldap, "SCOPE_%s" % config.get("auth", "ldap_scope").upper())
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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global CONNEXION
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try:
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CONNEXION.whoami_s()
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except:
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log.LOGGER.debug("Reconnecting the LDAP server")
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CONNEXION = ldap.initialize(config.get("auth", "ldap_url"))
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if BINDDN and PASSWORD:
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log.LOGGER.debug("Initial LDAP bind as %s" % BINDDN)
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CONNEXION.simple_bind_s(BINDDN, PASSWORD)
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distinguished_name = "%s=%s" % (ATTRIBUTE, ldap.dn.escape_dn_chars(user))
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log.LOGGER.debug(
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"LDAP bind for %s in base %s" % (distinguished_name, BASE))
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if FILTER:
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filter_string = "(&(%s)%s)" % (distinguished_name, FILTER)
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else:
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filter_string = distinguished_name
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log.LOGGER.debug("Used LDAP filter: %s" % filter_string)
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users = CONNEXION.search_s(BASE, SCOPE, filter_string)
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if users:
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log.LOGGER.debug("User %s found" % user)
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try:
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CONNEXION.simple_bind_s(users[0][0], password or "")
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except ldap.LDAPError:
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log.LOGGER.debug("Invalid credentials")
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else:
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log.LOGGER.debug("LDAP bind OK")
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return True
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else:
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log.LOGGER.debug("User %s not found" % user)
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log.LOGGER.debug("LDAP bind failed")
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return False
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74
radicale/auth/PAM.py
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74
radicale/auth/PAM.py
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2011 Henry-Nicolas Tourneur
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#
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# This library 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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PAM authentication.
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Authentication based on the ``pam-python`` module.
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"""
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import grp
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import pam
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import pwd
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from radicale import config, log
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GROUP_MEMBERSHIP = config.get("auth", "pam_group_membership")
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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# Check whether the user exists in the PAM system
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try:
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pwd.getpwnam(user).pw_uid
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except KeyError:
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log.LOGGER.debug("User %s not found" % user)
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return False
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else:
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log.LOGGER.debug("User %s found" % user)
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# Check whether the group exists
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try:
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members = grp.getgrnam(GROUP_MEMBERSHIP).gr_mem
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except KeyError:
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log.LOGGER.debug(
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"The PAM membership required group (%s) doesn't exist" %
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GROUP_MEMBERSHIP)
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return False
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# Check whether the user belongs to the required group
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for member in members:
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if member == user:
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log.LOGGER.debug(
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"The PAM user belongs to the required group (%s)" %
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GROUP_MEMBERSHIP)
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# Check the password
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if pam.authenticate(user, password):
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return True
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else:
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log.LOGGER.debug("Wrong PAM password")
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break
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else:
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log.LOGGER.debug(
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"The PAM user doesn't belong to the required group (%s)" %
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GROUP_MEMBERSHIP)
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return False
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38
radicale/auth/__init__.py
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38
radicale/auth/__init__.py
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@@ -0,0 +1,38 @@
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2008-2012 Guillaume Ayoub
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# Copyright © 2008 Nicolas Kandel
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# Copyright © 2008 Pascal Halter
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#
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# This library 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Authentication management.
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"""
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from radicale import config, log
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def load():
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"""Load list of available authentication managers."""
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auth_type = config.get("auth", "type")
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log.LOGGER.debug("Authentication type is %s" % auth_type)
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if auth_type == "None":
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return None
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else:
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module = __import__(
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"auth.%s" % auth_type, globals=globals(), level=2)
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return getattr(module, auth_type)
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61
radicale/auth/courier.py
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61
radicale/auth/courier.py
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@@ -0,0 +1,61 @@
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2011 Henry-Nicolas Tourneur
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#
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# This library 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Courier-Authdaemon authentication.
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"""
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import sys
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import socket
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from radicale import config, log
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COURIER_SOCKET = config.get("auth", "courier_socket")
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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line = "%s\nlogin\n%s\n%s" % (sys.argv[0], user, password)
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line = "AUTH %i\n%s" % (len(line), line)
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try:
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sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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sock.connect(COURIER_SOCKET)
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log.LOGGER.debug("Sending to Courier socket the request: %s" % line)
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sock.send(line)
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data = sock.recv(1024)
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sock.close()
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except socket.error as exception:
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log.LOGGER.debug(
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"Unable to communicate with Courier socket: %s" % exception)
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return False
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log.LOGGER.debug("Got Courier socket response: %r" % data)
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# Address, HOME, GID, and either UID or USERNAME are mandatory in resposne
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# see http://www.courier-mta.org/authlib/README_authlib.html#authpipeproto
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for line in data.split():
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if "GID" in line:
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return True
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# default is reject
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# this alleviates the problem of a possibly empty reply from authlib
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# see http://www.courier-mta.org/authlib/README_authlib.html#authpipeproto
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return False
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68
radicale/auth/htpasswd.py
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68
radicale/auth/htpasswd.py
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@@ -0,0 +1,68 @@
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2008-2012 Guillaume Ayoub
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# Copyright © 2008 Nicolas Kandel
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# Copyright © 2008 Pascal Halter
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#
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# This library 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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||||
# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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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||||
# GNU General Public License for more details.
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||||
#
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# You should have received a copy of the GNU General Public License
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||||
# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Htpasswd authentication.
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Load the list of login/password couples according a the configuration file
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created by Apache ``htpasswd`` command. Plain-text, crypt and sha1 are
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supported, but md5 is not (see ``htpasswd`` man page to understand why).
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"""
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import base64
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import hashlib
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from radicale import config
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FILENAME = config.get("auth", "htpasswd_filename")
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ENCRYPTION = config.get("auth", "htpasswd_encryption")
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def _plain(hash_value, password):
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"""Check if ``hash_value`` and ``password`` match using plain method."""
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return hash_value == password
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def _crypt(hash_value, password):
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"""Check if ``hash_value`` and ``password`` match using crypt method."""
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# The ``crypt`` module is only present on Unix, import if needed
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import crypt
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return crypt.crypt(password, hash_value) == hash_value
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def _sha1(hash_value, password):
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"""Check if ``hash_value`` and ``password`` match using sha1 method."""
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hash_value = hash_value.replace("{SHA}", "").encode("ascii")
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password = password.encode(config.get("encoding", "stock"))
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sha1 = hashlib.sha1() # pylint: disable=E1101
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sha1.update(password)
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return sha1.digest() == base64.b64decode(hash_value)
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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for line in open(FILENAME).readlines():
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if line.strip():
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login, hash_value = line.strip().split(":")
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if login == user:
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return globals()["_%s" % ENCRYPTION](hash_value, password)
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return False
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Block a user