September 2006 - Zope

User management messed up?
by Fabian Scheler 28 Sep '06

28 Sep '06

Hello everybody, a few days we migrated from Zope 2.7.0 to Zope 2.9.0 (ok, the up-to-date version is 2.9.4, but we had this version compiled some time ago and now finaly migrated the DB), and now we are experiencing problems with our user management. To migrate the DB I just exported everything from the old zope instance and importet it again into the new Zope Instance, Products and Extensions were just copied from the old to the new instance. Everything, except user management, works quite fine, only the Localizer-Product had to be replaced by a newer version. We have a subfolder 'z' where we have an exUserFolder that imports users from a MySQL DB, below this subfolder 'z' there is anotherfolder 'y' (t.m. <root>/z/y), and the users in the exUserFolder in 'z' have the rights to access the folder 'y'. When I now give an additional right to 'Anonymous' within folder 'y', folder 'y' cannot be accessed anymore by the users defined in the exUserFolder. Another problem is that creating User Folders and users within these folders does not work properly any more, t.m. such folders and users can be created but the particular user cannot login although they should have proper permissions. I have no clue by what these problems are caused. I would be very grateful if someone could give me a hint. Could this problem be related to a wrong apache configuration? Is it possible that the DB got messed up when I imported it into 2.9.0? Or may incompatibilities of a special Product with 2.9.0 cause these troubles? Thanks in advance, Fabian

4 5

POST from Zope to external server and receive RESPONSE
by David＠Sidach 28 Sep '06

28 Sep '06

Hello folks, I'm sure this question has been answered before but bear with me - Zope isn't my forte and I couldn't see anything like the problem I'd like to solve on the Zope list. I've inherited a project that now needs to post an XML packet to an ecommerce gateway, ie a user submits, via a form, credit card details which are posted to a Zope server. The Zope server then builds an XML packet and wants to POST to an external server which will send a RESPONSE. Can I capture that RESPONSE in Zope or must I use external methods and something like Python's httplib. I've done similar things with curl lib and C++, php curl lib and php. Any hints folks? David

3 2

automated object exporting
by Sascha Adler 28 Sep '06

28 Sep '06

Hi, I have a Zope object (a Plone site, to be specific) that I would like to have exported on a regular basis so I can back it up to another server. While I am familiar with Python, I'm not familiar with the specific methods involved in interacting with Zope for this. How would I go about doing this? Thanks, -Sascha

6 5

Dictionary in ZPT
by Alan 28 Sep '06

28 Sep '06

Dears, I am looking for help. I want to pass, when submitting a FORM from a page template, dictionary. I started with that: tal:define="global count python: 0; global data python: {}" ... and I would like to do something like: tal:define="global data['jname'] python: jname" or tal:define="global null python: data['jname']=jname" But I get only error. Is there a way of creating and increasing a dict inside Zope template page? Many thanks in advance. Cheers, Alan -- Alan Wilter S. da Silva, D.Sc. - Research Associate Department of Biochemistry, University of Cambridge. 80 Tennis Court Road, Cambridge CB2 1GA, UK. >>http://www.bio.cam.ac.uk/~awd28<<

5 5

Re: [Zope] Monkey Patching Grief with Zope 2.9.4
by Stefan H. Holek 28 Sep '06

28 Sep '06

Zope and ZODB switched to new-style classes. Stefan On 26. Sep 2006, at 22:52, Mark Wilson wrote: > I'd be interested to hear if anyone has any info about why and how > this change > was made to Zope. -- Anything that, in happening, causes itself to happen again, happens again. --Douglas Adams

1 0

issue with a ZODB database conflict error
by michael nt milne 27 Sep '06

27 Sep '06

I'm getting this error on trying to add a new file to a Plone site. Plone 2.1.3 Zope 2.8.7. The object I was trying to add was a PloneExFile. 2006-09-26T19:25:52 INFO ZODB.Conflict database conflict error (oid 0x7b41, class Products.CMFPlone.Portal.PloneSite) at /VirtualHostBase/site/VirtualHostRoot/createObject (1 conflicts, of which 0 were unresolved, since startup at Tue Sep 26 15:15:40 2006) Any ideas? What happens is that on adding the file Zope just egg timers for ages and this appears in the logs. In the end a new file is added but that's only after many many minutes etc -- michael

3 4

Monkey Patching Grief with Zope 2.9.4
by Mark Wilson 26 Sep '06

26 Sep '06

Hello Zope Listers We've been working on a Zope web app which has been built and running on Zope 2.7.0 for over 2 years now. Recently I've been trying to move it to Zope 2.9.4 but have encountered some severe difficulties with a couple (at least) of monkey patches that are essential to our app and which worked fine with the earlier version. Here's a synopsis of what I'm doing (PF2 is the code name of the app) #-------------------------------------------------------------------- from AccessControl.User import SpecialUser class PF2SpecialUser( SpecialUser ): """ a "pretend" subclass of SpecialUser """ def PF2SpecialUser_allowed( self, object, object_roles=None ): """ reimplementation of allowed() for PF2 """ # if we're not anon, we must be superuser, so do the # normal SpecialUser.allowed() stuff (see patching below) if self.getUserName() != 'Anonymous User': return self.PF2Superuser_allowed( object, object_roles ) # else we're anonymous - do our special handling which # basically allows the anonymous role to be assigned # arbitrary perms at any point in the folder hierarchy # more code here - return True if anon user can access object # now the monkey patching - ooh ooh eeeek ooh # save original method for use by superuser # (see PF2SpecialUser.PF2SpecialUser_allowed) PF2SpecialUser.PF2Superuser_allowed = SpecialUser.allowed # replace with our custom method SpecialUser.allowed = PF2SpecialUser.PF2SpecialUser_allowed #-------------------------------------------------------------------- As I said, with 2.7.0 this all works fine and dandy, but with 2.9.4 I get this error when trying to access (say) a Page Tempplate as the anonymous user: "unbound method PF2SpecialUser_allowed() must be called with PF2SpecialUser instance as first argument" Investigating in more detail, I switched to the Python security implementation. As an experiment, based on research, I changed line 437 of AccessControl/ImplPython.py from... if self._authenticated and context.user.allowed(value, roles): to... if self._authenticated and \ context.user.allowed.im_func(context.user, value, roles): to sidestep the type checking of the self argument. This does indeed prevent the above error, but its not a good solution at all (its not in C), and I'm sure its incomplete - there are other places where allowed() gets called. Has anyone got any smart ideas as to how I can accomplish my goal with Zope 2.9.4 and with minimal changes to our code? If its necessary I'm happy for us to run with minor modifications to "core" zope (we already have one or two in place already). Also, if anyone can tell me exactly what it is that's caused this new behaviour then I'd be really grateful since I've not been able to figure it out myself. Thanks in advance for any help anyone can offer. Mark

3 2

Mac OS X SystemStarter interface
by Perry Smith 26 Sep '06

26 Sep '06

I am new to this but I have not seen how the "runzope" or zopectl start commands are done at system startup. Mac OS X has its own system(s). The old is called SystemStarter and the new is called launchd. SystemStarter requires a directory and a few simple files. I'm not sure what launchd requires. Is there a need to implement these or has it already been done? How do most people do it on the various unix/linux versions? If not, I'll take a swag at it if others feel they could use it. Perry Smith Ease Software, Inc. pedz(a)easesoftware.com http://www.easesoftware.com SATA Products for IBMs RS/6000, pSeries, and AIX systems

2 1

Correpted Error while Packing zope databse
by atiwari＠zeomega.com 25 Sep '06

25 Sep '06

hi all, I am using Zope-2.7.5 final version with Python-2.3.5. I have a problem in packing of Database, whenever i click on Pack button within ControlPanel/Database/main, i am receiving error as Correpted error Log is as follows * Module ZODB.DB, line 555, in pack * Module ZODB.FileStorage, line 1582, in pack * Module ZODB.fspack, line 700, in pack * Module ZODB.fspack, line 455, in findReachable * Module ZODB.fspack, line 475, in buildPackIndex * Module ZODB.fspack, line 166, in checkTxn * Module ZODB.fspack, line 161, in fail CorruptedError: /srv/sites/intrapmo/var/Data.fs:298657432:time-stamp reduction: 0x035f3aa3f3818c55 <= 0x035f3f0dfa5d0289 i am not getting why excatly this error is comming. any suggessions or solutions from your side is most welcome Thanking You Anand Tiwari

3 2

[ANN] Zope 2.10.0c1 released
by Andreas Jung 25 Sep '06

25 Sep '06

Hi all, on behalf of Zope developer community I am pleased to announce the release of Zope 2.10.0c1 (=1st release candidate). You can download Zope 2.10.0c1 from: http://www.zope.org/Products/Zope/2.10.0c1/ Some new features of Zope 2.10: - ZPT implementation based on Zope 3 - experimental WSGI and Twisted integration - Zope 3.3, Five 1.5 integration - clock server - lots of minor improvements and fixes - replaced several Zope 2 modules with their sister implementation of Zope 3 For more information on what is new in this release, see the CHANGES.txt files for the release: http://www.zope.org/Products/Zope/2.10.0c1/CHANGES.txt Please bring all the bugs you have found to the Zope bugtracker: http://collector.zope.org/Zope For more information on the available Zope releases, guidance for selecting the right distribution and installation instructions, please see: http://www.plope.com/Books/2_7Edition/InstallingZope.stx Supported Python versions: Zope 2.10 requires Python 2.4.3 (Python 2.4.2 is still acceptable). Older Python versions are no longer supported. Using Python 2.5 is also *unsupported*. -- Andreas Jung

1 0