author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Fri, 16 Sep 2011 14:43:41 +0200 | |
branch | stable |
changeset 7804 | 814fb7f379a3 |
parent 6426 | 541659c39f6a |
child 8190 | 2a3c1b787688 |
child 8238 | 087bb529035c |
permissions | -rw-r--r-- |
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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parents:
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""Security hooks: check permissions to add/delete/update entities according to |
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the user connected to a session |
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""" |
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__docformat__ = "restructuredtext en" |
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from cubicweb import Unauthorized |
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from cubicweb.selectors import objectify_selector, lltrace |
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from cubicweb.server import BEFORE_ADD_RELATIONS, ON_COMMIT_ADD_RELATIONS, hook |
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def check_entity_attributes(session, entity, editedattrs=None, creation=False): |
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eid = entity.eid |
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eschema = entity.e_schema |
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# ._cw_skip_security_attributes is there to bypass security for attributes |
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# set by hooks by modifying the entity's dictionnary |
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if editedattrs is None: |
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editedattrs = entity.cw_edited |
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dontcheck = editedattrs.skip_security |
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for attr in editedattrs: |
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if attr in dontcheck: |
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continue |
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rdef = eschema.rdef(attr) |
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if rdef.final: # non final relation are checked by other hooks |
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# add/delete should be equivalent (XXX: unify them into 'update' ?) |
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if creation and not rdef.permissions.get('update'): |
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continue |
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rdef.check_perm(session, 'update', eid=eid) |
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class CheckEntityPermissionOp(hook.DataOperationMixIn, hook.LateOperation): |
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def precommit_event(self): |
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session = self.session |
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for eid, action, edited in self.get_data(): |
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entity = session.entity_from_eid(eid) |
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entity.cw_check_perm(action) |
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check_entity_attributes(session, entity, edited, |
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creation=(action == 'add')) |
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class CheckRelationPermissionOp(hook.DataOperationMixIn, hook.LateOperation): |
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def precommit_event(self): |
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session = self.session |
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for action, rschema, eidfrom, eidto in self.get_data(): |
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rdef = rschema.rdef(session.describe(eidfrom)[0], |
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session.describe(eidto)[0]) |
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rdef.check_perm(session, action, fromeid=eidfrom, toeid=eidto) |
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@objectify_selector |
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@lltrace |
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def write_security_enabled(cls, req, **kwargs): |
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if req is None or not req.write_security: |
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return 0 |
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return 1 |
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[repo] enhanced security handling: deprecates unsafe_execute, in favor of explicit read/write security control using the `enabled_security` context manager. Also code executed on the repository side is now unsafe by default.
Sylvain Thénault <sylvain.thenault@logilab.fr>
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class SecurityHook(hook.Hook): |
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__abstract__ = True |
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category = 'security' |
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__select__ = hook.Hook.__select__ & write_security_enabled() |
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class AfterAddEntitySecurityHook(SecurityHook): |
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__regid__ = 'securityafteraddentity' |
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events = ('after_add_entity',) |
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def __call__(self): |
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CheckEntityPermissionOp.get_instance(self._cw).add_data( |
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(self.entity.eid, 'add', self.entity.cw_edited) ) |
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class AfterUpdateEntitySecurityHook(SecurityHook): |
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__regid__ = 'securityafterupdateentity' |
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events = ('after_update_entity',) |
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def __call__(self): |
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try: |
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# check user has permission right now, if not retry at commit time |
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self.entity.cw_check_perm('update') |
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check_entity_attributes(self._cw, self.entity) |
0 | 98 |
except Unauthorized: |
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self.entity._cw_clear_local_perm_cache('update') |
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# save back editedattrs in case the entity is reedited later in the |
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# same transaction, which will lead to cw_edited being |
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# overwritten |
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CheckEntityPermissionOp.get_instance(self._cw).add_data( |
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104 |
(self.entity.eid, 'update', self.entity.cw_edited) ) |
0 | 105 |
|
106 |
||
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|
107 |
class BeforeDelEntitySecurityHook(SecurityHook): |
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|
108 |
__regid__ = 'securitybeforedelentity' |
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109 |
events = ('before_delete_entity',) |
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|
110 |
|
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|
111 |
def __call__(self): |
5557
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[entity] continue cleanup of Entity/AnyEntity namespace
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112 |
self.entity.cw_check_perm('delete') |
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|
113 |
|
1802
d628defebc17
delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
479
diff
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|
114 |
|
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115 |
class BeforeAddRelationSecurityHook(SecurityHook): |
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|
116 |
__regid__ = 'securitybeforeaddrelation' |
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117 |
events = ('before_add_relation',) |
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|
118 |
|
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|
119 |
def __call__(self): |
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|
120 |
if self.rtype in BEFORE_ADD_RELATIONS: |
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|
121 |
nocheck = self._cw.transaction_data.get('skip-security', ()) |
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|
122 |
if (self.eidfrom, self.rtype, self.eidto) in nocheck: |
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|
123 |
return |
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use ._cw instead of .cw_req
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|
124 |
rschema = self._cw.repo.schema[self.rtype] |
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|
125 |
rdef = rschema.rdef(self._cw.describe(self.eidfrom)[0], |
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|
126 |
self._cw.describe(self.eidto)[0]) |
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parents:
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|
127 |
rdef.check_perm(self._cw, 'add', fromeid=self.eidfrom, toeid=self.eidto) |
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|
128 |
|
0 | 129 |
|
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|
130 |
class AfterAddRelationSecurityHook(SecurityHook): |
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|
131 |
__regid__ = 'securityafteraddrelation' |
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|
132 |
events = ('after_add_relation',) |
0 | 133 |
|
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|
134 |
def __call__(self): |
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|
135 |
if not self.rtype in BEFORE_ADD_RELATIONS: |
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|
136 |
nocheck = self._cw.transaction_data.get('skip-security', ()) |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
diff
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|
137 |
if (self.eidfrom, self.rtype, self.eidto) in nocheck: |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
diff
changeset
|
138 |
return |
2847
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parents:
2835
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changeset
|
139 |
rschema = self._cw.repo.schema[self.rtype] |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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|
140 |
if self.rtype in ON_COMMIT_ADD_RELATIONS: |
6426
541659c39f6a
[hook/operation] nicer api to achieve same result as set_operation, as described in #1253630
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
6142
diff
changeset
|
141 |
CheckRelationPermissionOp.get_instance(self._cw).add_data( |
541659c39f6a
[hook/operation] nicer api to achieve same result as set_operation, as described in #1253630
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
6142
diff
changeset
|
142 |
('add', rschema, self.eidfrom, self.eidto) ) |
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parents:
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diff
changeset
|
143 |
else: |
4003
b9436fe77c9e
fix bad merge
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
3890
diff
changeset
|
144 |
rdef = rschema.rdef(self._cw.describe(self.eidfrom)[0], |
b9436fe77c9e
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Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
3890
diff
changeset
|
145 |
self._cw.describe(self.eidto)[0]) |
b9436fe77c9e
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Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
3890
diff
changeset
|
146 |
rdef.check_perm(self._cw, 'add', fromeid=self.eidfrom, toeid=self.eidto) |
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parents:
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|
147 |
|
4048
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parents:
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changeset
|
148 |
|
12c4f7e2bed6
had been involontarly dropped
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parents:
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changeset
|
149 |
class BeforeDeleteRelationSecurityHook(SecurityHook): |
12c4f7e2bed6
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parents:
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diff
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|
150 |
__regid__ = 'securitybeforedelrelation' |
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parents:
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diff
changeset
|
151 |
events = ('before_delete_relation',) |
12c4f7e2bed6
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parents:
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diff
changeset
|
152 |
|
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parents:
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diff
changeset
|
153 |
def __call__(self): |
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parents:
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diff
changeset
|
154 |
nocheck = self._cw.transaction_data.get('skip-security', ()) |
12c4f7e2bed6
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4003
diff
changeset
|
155 |
if (self.eidfrom, self.rtype, self.eidto) in nocheck: |
12c4f7e2bed6
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parents:
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diff
changeset
|
156 |
return |
12c4f7e2bed6
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
157 |
rschema = self._cw.repo.schema[self.rtype] |
12c4f7e2bed6
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parents:
4003
diff
changeset
|
158 |
rdef = rschema.rdef(self._cw.describe(self.eidfrom)[0], |
12c4f7e2bed6
had been involontarly dropped
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4003
diff
changeset
|
159 |
self._cw.describe(self.eidto)[0]) |
4190
742e3eb16f81
fix bad merge
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4048
diff
changeset
|
160 |
rdef.check_perm(self._cw, 'delete', fromeid=self.eidfrom, toeid=self.eidto) |
4048
12c4f7e2bed6
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
161 |