November 2002 - Zope

Custom authentication that avoids login screens
by Felix Ulrich-Oltean 18 Nov '02

18 Nov '02

Hi I have been pestering the good folks on #zope about this, as well as trying to ask in here a couple of times, but I'm not getting anywhere, and worse, I don't think people get what I am trying to do although it seems simple: Our site is served by Zope, as well as PHP and Perl - the entry point is in PHP - i.e. login screens, general stuff. By the time someone gets to the Zope pages, they should be already logged in. I've looked at both exUserFolder and SimpleUserFolder, but I still cannot see how to intercept the request before the UF presents the user with a login screen / HTTP basic auth dialog. The PHP part of the site will have set a cookie - in Zope I need to look for this cookie, and then use it as a key in our RDBMS to check whether or not to allow the user to proceed. If there's no cookie or the user is not authorized, I need to bounce them back to the PHP-based login system. TheJester suggested looking at remoteAuthMethod in exUF, but this method is called too late in the chain of events. Am I really not making sense? Anyone shed any light on this? TIA, Felix.

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Python classes properties.
by naveen 18 Nov '02

18 Nov '02

Hello, I am using python classes to for my Zope product. How do i add one more property sheet to my python class. I add the first one using the following code: _properties=({'id':'title', 'type': 'string', 'mode': 'w'}, {'id':'color', 'type': 'string', 'mode': 'w'}, ) Since i already have about 25 properties on this property. i want to add another property sheet as we do in ZOPE ZClass. naveen

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AttributeError: sendall when using ftplib with Zope 2.5.1
by Jeff Kowalczyk 18 Nov '02

18 Nov '02

The ftplib that came with my Zope 2.5.1 win32 is giving an error on socket's sendall method. Is there anything I'm doing wrong, or is it a bug in this particular version or my installation? Thanks. C:\Program Files\Zope>bin\python.exe Python 2.1.3 (#35, Apr 8 2002, 17:47:50) [MSC 32 bit (Intel)] on win32 Type "copyright", "credits" or "license" for more information. >>> from ftplib import FTP >>> ftp = FTP('localhost') >>> ftp.login() Traceback (most recent call last): File "<stdin>", line 1, in ? File "C:\Program Files\Zope/bin/lib\ftplib.py", line 317, in login resp = self.sendcmd('USER ' + user) File "C:\Program Files\Zope/bin/lib\ftplib.py", line 228, in sendcmd self.putcmd(cmd) File "C:\Program Files\Zope/bin/lib\ftplib.py", line 163, in putcmd self.putline(line) File "C:\Program Files\Zope/bin/lib\ftplib.py", line 158, in putline self.sock.sendall(line) File "<string>", line 1, in sendall AttributeError: sendall >>> But it works fine on my Python2.2 on the same machine, in a different dir. PythonWin 2.2.1 (#34, Apr 9 2002, 19:34:33) [MSC 32 bit (Intel)] on win32. Portions Copyright 1994-2001 Mark Hammond (mhammond(a)skippinet.com.au) - see 'Help/About PythonWin' for further copyright information. >>> from ftplib import FTP >>> ftp = FTP('localhost') >>> ftp.login() '230 Anonymous user logged in.' >>> ftp.retrlines('LIST') '226 Transfer complete.' >>> What's New in Python 2.1.2 (rc1)? ================================= - The socket object gained a new method, 'sendall()'. This method is guaranteed to send all data - this is not guaranteed by the 'send()' method. See also SF patch #474307. The standard library has been updated to use this method where appropriate. My _socket.pyd has the following signature: 36.0 KB (36,927 bytes) Thursday, May 31, 2001, 8:02:06 AM I'm presuming it is the original that comes with Zope 2.5.1

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ZCatalog "Find Object" error
by Tim Wilson 18 Nov '02

18 Nov '02

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone, I got the following traceback tonight when was trying to add some 'Photo' instances to a ZCatalog manually. I had selected 'Photo' from the Find Objects tab of the ZCatalog. I've never seen an error like this. Anyone have any ideas? ZODB.POSException.ConflictError Sorry, a site error occurred. Traceback (innermost last): * Module ZPublisher.Publish, line 150, in publish_module * Module Products.Localizer, line 58, in new_publish * Module ZPublisher.Publish, line 127, in publish * Module Products.Localizer, line 58, in new_publish * Module ZPublisher.Publish, line 127, in publish * Module Products.Localizer, line 58, in new_publish * Module ZPublisher.Publish, line 127, in publish * Module Products.Localizer, line 58, in new_publish * Module ZPublisher.Publish, line 122, in publish * Module Zope, line 131, in zpublisher_exception_hook * Module ZPublisher.Publish, line 102, in publish * Module Zope, line 188, in commit * Module ZODB.Transaction, line 222, in commit * Module ZODB.Transaction, line 195, in commit * Module ZODB.Transaction, line 256, in _commit_objects * Module ZODB.Connection, line 389, in commit __traceback_info__: (('intSet', 'intSet'), '\x00\x00\x00\x00\x00\x00.\x7f', '') * Module ZODB.FileStorage, line 705, in store ConflictError: database conflict error (oid 0000000000002e7f, serial was 0348ad7e40345a77, now 0000000000000000) - -Tim - -- Tim Wilson Twin Cities, Minnesota, USA Science teacher, Linux fan, Zope developer, Grad. student, Daddy mailto:wilson@visi.com | http://qwerk.org/ | public key: 0x8C0F8813 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE92GXOB56RQ4wPiBMRAuelAJwOW8Wn9ah2EReVZzqO5PgEucgn6gCfVhd9 RF8kkNrfTsJsfcWxyYIdvWo= =+w3G -----END PGP SIGNATURE-----

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Catalog addIndex Error
by beno 18 Nov '02

18 Nov '02

Hi; I tried to install a product called EMarket when I ran into this error )upon trying to set up EMarket from the eMarketAdd.dtml page): Error Type: TypeError Error Value: Catalog addIndex now requires the index type to be resolved prior to adding; create the proper index in the caller. There is this line of code from addEMarket(): newMainF.Catalog._catalog.addIndex('isAvailable','FieldIndex') Clearly, by this point addEMarket() has been called, therefore, why is this not sufficient? beno

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OT: Red Hat CMS 5.0
by Ausum Studio 18 Nov '02

18 Nov '02

Has anyone tried Red Hat CMS 5.0? I wonder how much does it differ from former ACS, and also how much RH's position as a leading Linux provider would impact other open source CMS initiatives. Ausum

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Re: [Zope] error-handling product?
by Chris Withers 18 Nov '02

18 Nov '02

Dylan Reinhardt wrote: > Yes, thanks... I have quite an extensive set of DTML > standard_error_message files. I've been e-mailing myself tracebacks for > quite a while now. > > Now I want to do stuff I wouldn't use DTML for, like batch mailing and > significant filtering. You may wish to have a look at: http://www.zope.org/Members/NIP/MailingLogger/ ...and see about getting the new Error Log object in Zope 2.6.0 to pipe its logging to Zope's standard logging mechanism (zLOG) which you can then use with MailingLogger. cheers, Chris

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Data object timeout value
by Bob Corriher 18 Nov '02

18 Nov '02

I have noticed that the Data object timeout value in the Transient Object Container seems to reset itself to the default value of 20 minutes each time Zope is restarted. The Zope version is (Zope 2.5.1 (binary release, python 2.1, linux2-x86), python 2.1.3, linux2) and python is 2.1.3 (#1, Apr 15 2002, 11:13:45) [GCC 2.7.2.3] . Has anyone else seen this behavior and is there a way to make this value sticky? I don't want to have to go in and change it each time we restart Zope. I have multiple site which use session tracking and this starting to cause frequent session timeouts in some of them. TIA, Bob Corriher P-Wave Inc.

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Formulator - How to set up security to create fields inside a python script
by Gabriel Genellina 18 Nov '02

18 Nov '02

Hi I want to create and use a Formulator field inside a Python Script. That is, by example: from Products.Formulator.StandardFields import StringField MyField = StringField('alias', title='Alias', description='Alias de la columna') (The idea is to dynamically create and manage the field list). But I was unable to find out the right security assertions. I've tried (in the __init__.py module of another product): allow_module('Products.Formulator.StandardFields') or ModuleSecurityInfo('Products').declarePublic('Formulator') ModuleSecurityInfo('Products.Formulator').declarePublic('StandardFields') ModuleSecurityInfo('Products.Formulator.StandardFields').declarePublic("StringField") or even more esoteric approaches, but I always end with this security violation. >From the stupid_log_file: PROBLEM(100) Zope Security Policy '<Python Method object at 01956728>' passed as roles during validation of 'CheckBoxField' is not a sequence. This is generated by the validate() method in ZopeSecurityPolicy. As far as I can tell, the "roles" argument is expected to be None or a list, not a Python Method. I have no idea of what method it is, or why is it used instead of the true role. (The Zope security machinery is far beyond my current Python knowledge and it's a kind of magic for me :) ). Any help, please? Gabriel Genellina Softlab SRL

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Access to properties without accessing the same properties in parent classes
by Dr. F. Tröster 18 Nov '02

18 Nov '02

Is there a possibilty with the method "hasProperty(...)" to test an object to have a special property without looking for the same property not inherited by the parents part of the object? Thank you very much Fritz

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