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diff --git a/mailman/core/initialize.py b/mailman/core/initialize.py
new file mode 100644
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+++ b/mailman/core/initialize.py
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+# Copyright (C) 2006-2008 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Initialize all global state.
+
+Every entrance into the Mailman system, be it by command line, mail program,
+or cgi, must call the initialize function here in order for the system's
+global state to be set up properly.  Typically this is called after command
+line argument parsing, since some of the initialization behavior is controlled
+by the command line arguments.
+"""
+
+import os
+
+from zope.interface.interface import adapter_hooks
+from zope.interface.verify import verifyObject
+
+import mailman.config.config
+import mailman.core.logging
+
+from mailman.core.plugins import get_plugin
+from mailman.interfaces import IDatabase
+
+
+
+# These initialization calls are separated for the testing framework, which
+# needs to do some internal calculations after config file loading and log
+# initialization, but before database initialization.  Generally all other
+# code will just call initialize().
+
+def initialize_1(config_path, propagate_logs):
+    """First initialization step.
+
+    * The configuration system
+    * Run-time directories
+    * The logging subsystem
+
+    :param config_path: The path to the configuration file.
+    :type config_path: string
+    :param propagate_logs: Should the log output propagate to stderr?
+    :type propagate_logs: boolean
+    """
+    # By default, set the umask so that only owner and group can read and
+    # write our files.  Specifically we must have g+rw and we probably want
+    # o-rwx although I think in most cases it doesn't hurt if other can read
+    # or write the files.  Note that the Pipermail archive has more
+    # restrictive permissions in order to handle private archives, but it
+    # handles that correctly.
+    os.umask(007)
+    mailman.config.config.load(config_path)
+    # Create the queue and log directories if they don't already exist.
+    mailman.config.config.ensure_directories_exist()
+    mailman.core.logging.initialize(propagate_logs)
+
+
+def initialize_2(debug=False):
+    """Second initialization step.
+
+    * Archivers
+    * Rules
+    * Chains
+    * Pipelines
+    * Commands
+
+    :param debug: Should the database layer be put in debug mode?
+    :type debug: boolean
+    """
+    database_plugin = get_plugin('mailman.database')
+    # Instantiate the database plugin, ensure that it's of the right type, and
+    # initialize it.  Then stash the object on our configuration object.
+    database = database_plugin()
+    verifyObject(IDatabase, database)
+    database.initialize(debug)
+    mailman.config.config.db = database
+    # Initialize the rules and chains.  Do the imports here so as to avoid
+    # circular imports.
+    from mailman.app.commands import initialize as initialize_commands
+    from mailman.archiving import initialize as initialize_archivers
+    from mailman.core.chains import initialize as initialize_chains
+    from mailman.core.pipelines import initialize as initialize_pipelines
+    from mailman.core.rules import initialize as initialize_rules
+    initialize_archivers()
+    initialize_rules()
+    initialize_chains()
+    initialize_pipelines()
+    initialize_commands()
+
+
+def initialize_3():
+    """Third initialization step.
+
+    * Adapters
+    """
+    from mailman.app.registrar import adapt_domain_to_registrar
+    adapter_hooks.append(adapt_domain_to_registrar)
+
+
+
+def initialize(config_path=None, propagate_logs=False):
+    initialize_1(config_path, propagate_logs)
+    initialize_2()
+    initialize_3()