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Re: [Zope-dev] [IDEA] ZopeRoot and SiteRoot
by Gary Poster 18 Dec '01

18 Dec '01

Hi all. The Virtual Host Folder I released currently has a lot of the features you want, and is getting a number of other ones. I think it is worth a look, but then, that's just me. It replaces the VHM. I need to specify the interface, such as it is, but ... 1) The currently released one is very stable, as far as I can tell 2) I'm working on a CMF tool "front end" to it that should be released in beta within the week 3) I should also be releasing a new version this week that has all-but-the-kitchen-sink alias support per-virtual-host. Kind of a power-tools approach, where you are responsible for setting up exactly how you want the alias to work. Potentially confusing but hopefully flexible and powerful. And TTW, of course. 4) Once I have the CMF tool front end, I will of necessity have settled down on interfaces to get the various pieces of info you want (virtual host root, location from virtual root for breadcrumbs, etc.) It will need to be a bit specialized because of the alias bits. 5) I'm interested in getting feedback on it now (particularly the soon-to-be-released all-slicing all-dicing alias version) and adding features/cleaning it up as desired (starting January, when my life will hopefully have settled down a bit) For now, it and its current feature list is at http://www.zope.org/Members/poster/VHF I'll send a note on Announce when the new one is out. Gary

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Re: [Zope-dev] disabling gc does not necessarily hide memory corruption
by Anthony Baxter 18 Dec '01

18 Dec '01

>>> Leonardo Rochael Almeida wrote > >From my mile-high look at the issues, it seems like the cycle-gc asks > for an object where to look for for it's references (at least thats what > the tp_traverse function looks like it does). So, if your tp_traverse > sends the gc somewhere it shouldn't go (or if tp_traverse itself is not > some C function pointer), you get a crash. When I look at it, I see the GC hitting an object with a null tp_type, and a refcount of 1. This is monster bogus - but normally (non-GC) it would just be ignored and sit there as a small memory leak. > import gc > gc.disable() > also stops the SIG11 without the need of a python recompile, but I'll > only be sure when the server gets office-hours-traffic tomorrow morning. I find that if I do this I get a vast vast number of RestrictedPython cycles leaking (according to the manage_debug screen) and memory consumption goes through the roof.

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RE: [Zope-dev] [IDEA] ZopeRoot and SiteRoot
by sean.upton＠uniontrib.com 17 Dec '01

17 Dec '01

As it stands, though, I think you need to: use getPhysicalPath(), and iterate overs the construction of a temporary path list object, using pop() to remove a folder from the list until using restrictedTraverse() with a conditional test of folder content finds a VHM or similar object that indicates you are in the virtual site root. Not a big deal, but it is around a dozen lines of code in a TTW python script to do this. Either that, or in theory (if using VHM), you could get the namespace of your VHM via acquisition, and just return its aq_parent... Sean -----Original Message----- From: Chris McDonough [mailto:chrism@zope.com] Sent: Monday, December 17, 2001 10:27 AM To: Casey Duncan; Lennart Regebro; zope-dev(a)zope.org Subject: Re: [Zope-dev] [IDEA] ZopeRoot and SiteRoot Hmm... no, I dont think there's a call to get the virtual root. Although I imagine it would be pretty simple to add. ----- Original Message ----- From: "Casey Duncan" <c.duncan(a)nlada.org> To: "Chris McDonough" <chrism(a)zope.com>; "Lennart Regebro" <lennart(a)regebro.nu>; <zope-dev(a)zope.org> Sent: Monday, December 17, 2001 12:45 PM Subject: Re: [Zope-dev] [IDEA] ZopeRoot and SiteRoot > On Monday 17 December 2001 12:20 pm, Chris McDonough allegedly wrote: > > getPhysicalRoot already exists, and returns the top-level app object > > when called from any Zope object. > > You know I had a sneaking suspicion that this existed somewhere, which is why > I didn't go ahead and fishify it. Thanks for pointing that out. > > Is there a comparable all to get the site root? > > /---------------------------------------------------\ > Casey Duncan, Sr. Web Developer > National Legal Aid and Defender Association > c.duncan(a)nlada.org > \---------------------------------------------------/ > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) > _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )

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User Groups
by brian.r.brinegar.1 17 Dec '01

17 Dec '01

I've found that it would be very useful to be able to define groups of users and then grant a local role to that group rather than individual users. For example we have multiple groups working together on our Zope installation and there are certian objects my group may want to share with another group. We can grant all the members of that group permission, however if they hire someone new they have to notify the maintainers of every object their group has access to. Are there plans for anything to solve this problem? The idea implementation I see would be a centralized group management system (maybe in the control panel) and then ability to grant roles to the group. But this would require changing core pieces of Zope. Any ideas on implementation? --Brian Brinegar ECN Web Technician MSEE 104 A 494-3106 http://www.geeksoft.net/

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Required final newline in Script (Python) in Zope 2.4.3
by Jean Jordaan 17 Dec '01

17 Dec '01

Hi people I'm moving an app to Zope 2.4.3, and one thing I've discovered is that methods that don't end with a final newline are invalid:: Script line 13 REQUEST.RESPONSE.redirect(url) ^ SyntaxError: invalid syntax If I go press return after the ), everything is fine. Is this a feature? An inevitability? Is it Good For Me? Regards, Jean Jordaan

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creating our own binary packages
by Leonardo Rochael Almeida 17 Dec '01

17 Dec '01

Hi, How are the binary Zope packages for Linux (those available for download at Zope.org) created? Is there a script available somewhere? Due to recent discussions on this list, I'm finding it increasingly desirable to be able to build my own zope binary packages giving my own set of options to the python compilation. Cheers, Leo

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MTBrazil & News #1
by eximnews＠mtbrazil.com.br 15 Dec '01

15 Dec '01

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Very serious problem with Zope 2.4.x !!
by James Johnson 14 Dec '01

14 Dec '01

This might be related. http://www.securityfocus.com/cgi-bin/archive.pl?id=82&start=2001- 12-11&end=2001-12-17&mid=242328&threads=1 > Thanks so much for the excellent repeatable test case. Hopefully we > can=20 get it fixed soon. There's no workaround for now except for > maybe not=20 creating and returning a list with so many elements. > >

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Zope 2.4 crashes -- possible fix identified, other solutions also suggested
by Matthew T. Kromer 14 Dec '01

14 Dec '01

We've found a problem in the restricted python compiler on Python 2.1 which can significantly undercalculate the stack size of a dynamically generated python code object (such as those used for DTML and Python scripts in Zope). What that means is that when such an object overflows its stack, it begins clobbering things in memory. As the amount of entropy in the system increases, it heads for a crash. We've got a patch into the Zope 2.4 branch and 2.5 branch which corrects a large number of misestimations (although we believe there are a few cases yet unhandled) and has resulted in a "fix" for our test case reproducing the problem. You can download an "on-the-fly" tarball from our cvs.zope.org server, the URL for this is http://cvs.zope.org/Zope/Zope.tar.gz?tarball=1&only_with_tag=Zope-2_4-branch We intend on integrating a few further refinements early next week and putting out an official release at that time; however, applying the new code earlier may significantly reduce your exposure to the bug. Also, we believe that anyone using Python 2.1 with garbage collection turned on should recompile Python to turn off garbage collection, using the flags --without-pymalloc and --without-cycle-gc to avoid additional exposures caused by these options. We are evaluating a modification at this time to z2.py which would also disable garbage collection if it is enabled; users who cannot rebuild Python could modify z2.py to include the additonal lines import gc gc.disable() to disable garbage collection at runtime.

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Searching
by Dirk Datzert 14 Dec '01

14 Dec '01

Hi, I'm looking for a search tool which can do semantic/synonym search. Can this be done via ZCatalog ? Regards Dirk

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