Add sepolgen for audit2allow

(cherry picked from commit fcd1ca896d5e281901703561abc303cf92423daa)

Addresses:
ImportError: No module named sepolgen.audit

Change-Id: I320a5c772bd55cc223d8484b6b8db22bacd2b4c5
diff --git a/lib/python2.7/site-packages/sepolgen/defaults.py b/lib/python2.7/site-packages/sepolgen/defaults.py
new file mode 100644
index 0000000..9591063
--- /dev/null
+++ b/lib/python2.7/site-packages/sepolgen/defaults.py
@@ -0,0 +1,77 @@
+# Authors: Karl MacMillan <kmacmillan@mentalrootkit.com>
+#
+# Copyright (C) 2006 Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program 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; version 2 only
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+
+import os
+import re
+
+# Select the correct location for the development files based on a
+# path variable (optionally read from a configuration file)
+class PathChoooser(object):
+    def __init__(self, pathname):
+        self.config = dict()
+        if not os.path.exists(pathname):
+            self.config_pathname = "(defaults)"
+            self.config["SELINUX_DEVEL_PATH"] = "/usr/share/selinux/default:/usr/share/selinux/mls:/usr/share/selinux/devel"
+            return
+        self.config_pathname = pathname
+        ignore = re.compile(r"^\s*(?:#.+)?$")
+        consider = re.compile(r"^\s*(\w+)\s*=\s*(.+?)\s*$")
+        for lineno, line in enumerate(open(pathname)):
+            if ignore.match(line): continue
+            mo = consider.match(line)
+            if not mo:
+                raise ValueError("%s:%d: line is not in key = value format" % (pathname, lineno+1))
+            self.config[mo.group(1)] = mo.group(2)
+
+    # We're only exporting one useful function, so why not be a function
+    def __call__(self, testfilename, pathset="SELINUX_DEVEL_PATH"):
+        paths = self.config.get(pathset, None)
+        if paths is None:
+            raise ValueError("%s was not in %s" % (pathset, self.config_pathname))
+        paths = paths.split(":")
+        for p in paths:
+            target = os.path.join(p, testfilename)
+            if os.path.exists(target): return target
+        return os.path.join(paths[0], testfilename)
+
+
+"""
+Various default settings, including file and directory locations.
+"""
+
+def data_dir():
+    return "/var/lib/sepolgen"
+
+def perm_map():
+    return data_dir() + "/perm_map"
+
+def interface_info():
+    return data_dir() + "/interface_info"
+
+def attribute_info():
+    return data_dir() + "/attribute_info"
+
+def refpolicy_makefile():
+    chooser = PathChoooser("/etc/selinux/sepolgen.conf")
+    return chooser("Makefile")
+
+def headers():
+    chooser = PathChoooser("/etc/selinux/sepolgen.conf")
+    return chooser("include")
+