Fix Binary on python < 2.7.4 (closes #10593811)
Before the fix for http://bugs.python.org/issue10211 we can't pass a
buffer object to BytesIO, so keep using StringIO in that case. And
because StringIO is an old-style class, we can't use super().
from __future__ import print_function
from base64 import b64decode, b64encode
try:
uri, newdn = __args__
except ValueError:
print('USAGE: cubicweb-ctl shell <instance> ldap_change_base_dn.py -- <ldap source uri> <new dn>')
print()
print('you should not have updated your sources file yet')
olddn = repo.sources_by_uri[uri].config['user-base-dn']
assert olddn != newdn
raw_input("Ensure you've stopped the instance, type enter when done.")
for eid, extid in sql("SELECT eid, extid FROM entities WHERE source='%s'" % uri):
olduserdn = b64decode(extid)
newuserdn = olduserdn.replace(olddn, newdn)
if newuserdn != olduserdn:
print(olduserdn, '->', newuserdn)
sql("UPDATE entities SET extid='%s' WHERE eid=%s" % (b64encode(newuserdn), eid))
commit()
print('you can now update the sources file to the new dn and restart the instance')