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#!/usr/bin/python
# Unix SMB/CIFS implementation.
# Copyright (C) Andrew Tridgell 2010
#
# 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; either version 3 of the License, or
# (at your option) any later version.
#
# 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, see <http://www.gnu.org/licenses/>.
#
import sys, os
def samba_find_external(directory):
'''insert into out module search path the path to an
external library'''
for p in sys.path:
dir = os.path.join(p, directory)
if os.path.isdir(dir):
sys.path.insert(0, dir)
return
# finally try in the local directory, to handle in-tree testing
dir = os.path.join("scripting/python", directory)
if os.path.isdir(dir):
sys.path.insert(0, dir)
return
print "Failed to find external python library %s" % directory
raise
def samba_external_dns_resolver():
'''try and import the dns.resolver library, and if it fails
then use a local copy from the external directory'''
try:
import dns.resolver as dns
except:
samba_find_external("samba_external/dnspython")
import dns.resolver as dns
return dns
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