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# IVLE - Informatics Virtual Learning Environment
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# Copyright (C) 2007-2008 The University of Melbourne
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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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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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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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# 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 this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# Module: authenticate
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# Provides a mechanism for authenticating a username and password, and
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# returning a yes/no response.
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def authenticate(username, password):
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"""Determines whether a particular username/password combination is
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valid. The password is in cleartext.
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Returns None if failed to authenticate.
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Returns a dictionary containing the user's login fields (including
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"login", "nick" and "fullname") on success.
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# Just authenticate against the DB at the moment.
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# Later we will provide other auth options such as LDAP.
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# WARNING: Both username and password may contain any characters, and must
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# be sanitized within this function.
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# (Not SQL-sanitized, just sanitized to our particular constraints).
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# Spawn a DB object just for making this call.
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# (This should not spawn a DB connection on each page reload, only when
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# there is no session object to begin with).
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dbconn = common.db.DB()
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if not dbconn.user_authenticate(username, password):
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return dbconn.get_user(username)