# -*- coding: utf-8 -*-
#
# django-ldapdb
-# Copyright (C) 2009-2010 Bolloré telecom
+# Copyright (c) 2009-2010, Bolloré telecom
+# All rights reserved.
+#
# See AUTHORS file for a full list of contributors.
#
-# 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.
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
#
-# 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.
+# 3. Neither the name of Bolloré telecom nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
from copy import deepcopy
import ldap
+from django.db import connections
from django.db.models.query import QuerySet as BaseQuerySet
from django.db.models.query_utils import Q
from django.db.models.sql import Query as BaseQuery
from django.db.models.sql.where import WhereNode as BaseWhereNode, Constraint as BaseConstraint, AND, OR
-import ldapdb
-
-from ldapdb.models.fields import CharField, IntegerField, ListField
-
-def get_lookup_operator(lookup_type):
- if lookup_type == 'gte':
- return '>='
- elif lookup_type == 'lte':
- return '<='
- else:
- return '='
+from ldapdb.backends.ldap import compiler
+from ldapdb.models.fields import CharField
class Constraint(BaseConstraint):
"""
An object that can be passed to WhereNode.add() and knows how to
pre-process itself prior to including in the WhereNode.
+
+ NOTES:
+ - we redefine this class, because when self.field is None calls
+ Field().get_db_prep_lookup(), which short-circuits our LDAP-specific code.
"""
- def process(self, lookup_type, value):
+ def process(self, lookup_type, value, connection):
"""
Returns a tuple of data suitable for inclusion in a WhereNode
instance.
try:
if self.field:
- params = self.field.get_db_prep_lookup(lookup_type, value)
+ params = self.field.get_db_prep_lookup(lookup_type, value,
+ connection=connection, prepared=True)
db_type = self.field.db_type()
else:
- params = CharField().get_db_prep_lookup(lookup_type, value)
+ params = CharField().get_db_prep_lookup(lookup_type, value,
+ connection=connection, prepared=True)
db_type = None
except ObjectDoesNotExist:
raise EmptyShortCircuit
obj = Constraint(obj.alias, obj.col, obj.field)
super(WhereNode, self).add((obj, lookup_type, value), connector)
- def as_sql(self, qn=None, connection=None):
- bits = []
- for item in self.children:
- if hasattr(item, 'as_sql'):
- sql, params = item.as_sql(qn=qn, connection=connection)
- bits.append(sql)
- continue
-
- constraint, lookup_type, y, values = item
- comp = get_lookup_operator(lookup_type)
- if hasattr(constraint, "col"):
- # django 1.2
- column = constraint.col
- if lookup_type == 'in':
- equal_bits = [ "(%s%s%s)" % (column, comp, value) for value in values ]
- clause = '(|%s)' % ''.join(equal_bits)
- else:
- clause = "(%s%s%s)" % (constraint.col, comp, values)
- else:
- # django 1.1
- (table, column, db_type) = constraint
- equal_bits = [ "(%s%s%s)" % (column, comp, value) for value in values ]
- if len(equal_bits) == 1:
- clause = equal_bits[0]
- else:
- clause = '(|%s)' % ''.join(equal_bits)
-
- if self.negated:
- bits.append('(!%s)' % clause)
- else:
- bits.append(clause)
- if len(bits) == 1:
- sql_string = bits[0]
- elif self.connector == AND:
- sql_string = '(&%s)' % ''.join(bits)
- elif self.connector == OR:
- sql_string = '(|%s)' % ''.join(bits)
- else:
- raise Exception("Unhandled WHERE connector: %s" % self.connector)
- return sql_string, []
-
class Query(BaseQuery):
- def __init__(self, *args, **kwargs):
- super(Query, self).__init__(*args, **kwargs)
- self.connection = ldapdb.connection
-
- def get_count(self):
- filterstr = ''.join(['(objectClass=%s)' % cls for cls in self.model.object_classes])
- sql, params = self.where.as_sql()
- filterstr += sql
- filterstr = '(&%s)' % filterstr
-
+ def get_count(self, using):
+ connection = connections[using]
try:
- vals = ldapdb.connection.search_s(
+ vals = connection.search_s(
self.model.base_dn,
- ldap.SCOPE_SUBTREE,
- filterstr=filterstr,
+ self.model.search_scope,
+ filterstr=compiler.query_as_ldap(self),
attrlist=[],
)
- except:
- raise self.model.DoesNotExist
+ except ldap.NO_SUCH_OBJECT:
+ return 0
- return len(vals)
+ number = len(vals)
- def results_iter(self):
- filterstr = ''.join(['(objectClass=%s)' % cls for cls in self.model.object_classes])
- sql, params = self.where.as_sql()
- filterstr += sql
- filterstr = '(&%s)' % filterstr
- attrlist = [ x.db_column for x in self.model._meta.local_fields if x.db_column ]
+ # apply limit and offset
+ number = max(0, number - self.low_mark)
+ if self.high_mark is not None:
+ number = min(number, self.high_mark - self.low_mark)
- try:
- vals = ldapdb.connection.search_s(
- self.model.base_dn,
- ldap.SCOPE_SUBTREE,
- filterstr=filterstr,
- attrlist=attrlist,
- )
- except:
- raise self.model.DoesNotExist
-
- # perform sorting
- if self.extra_order_by:
- ordering = self.extra_order_by
- elif not self.default_ordering:
- ordering = self.order_by
- else:
- ordering = self.order_by or self.model._meta.ordering
- def cmpvals(x, y):
- for field in ordering:
- if field.startswith('-'):
- field = field[1:]
- negate = True
- else:
- negate = False
- attr = self.model._meta.get_field(field).db_column
- attr_x = x[1].get(attr, '').lower()
- attr_y = y[1].get(attr, '').lower()
- val = negate and cmp(attr_y, attr_x) or cmp(attr_x, attr_y)
- if val:
- return val
- return 0
- vals = sorted(vals, cmp=cmpvals)
+ return number
- # process results
- for dn, attrs in vals:
- row = []
- for field in iter(self.model._meta.fields):
- if field.attname == 'dn':
- row.append(dn)
- elif isinstance(field, IntegerField):
- row.append(int(attrs.get(field.db_column, [0])[0]))
- elif isinstance(field, ListField):
- row.append(attrs.get(field.db_column, []))
- else:
- row.append(attrs.get(field.db_column, [''])[0])
- yield row
+ def has_results(self, using):
+ return self.get_count(using) != 0
class QuerySet(BaseQuerySet):
def __init__(self, model=None, query=None, using=None):
if not query:
- import inspect
- spec = inspect.getargspec(BaseQuery.__init__)
- if len(spec[0]) == 3:
- # django 1.2
- query = Query(model, WhereNode)
- else:
- # django 1.1
- query = Query(model, None, WhereNode)
- super(QuerySet, self).__init__(model=model, query=query)
+ query = Query(model, WhereNode)
+ super(QuerySet, self).__init__(model=model, query=query, using=using)
+
+ def delete(self):
+ "Bulk deletion."
+ connection = connections[self.db]
+ try:
+ vals = connection.search_s(
+ self.model.base_dn,
+ self.model.search_scope,
+ filterstr=compiler.query_as_ldap(self.query),
+ attrlist=[],
+ )
+ except ldap.NO_SUCH_OBJECT:
+ return
+
+ # FIXME : there is probably a more efficient way to do this
+ for dn, attrs in vals:
+ connection.delete_s(dn)