October 1999 - Zope - Zope lists

RE: [Zope] [announce] Local File System product
by Jay, Dylan 28 Oct '99

28 Oct '99

> -----Original Message----- > From: Jonothan Farr [mailto:jfarr@real.com] > Sent: Wednesday, October 27, 1999 04:13 > To: kent(a)goathill.org > Cc: zope > Subject: Re: [Zope] [announce] Local File System product > > > > >What I was planning on doing for security was having an > "access" file in > > >the products directory that contained a list of > directories and a list of > > >the files (allowing wildcards) that you were allowed to > access in _that_ > > >directory. It was going to default to only letting you > read txt and log > > >files in the product directory itself (defined by .). > > >You could also add roles to this file. > > > > My 'file access' product creates Zope folders which correspond to > > directories and other interesting objects. These Zope folders > > can use the std zope acl_users (or whatever) and can also contain > > methods and products in the Zope database specific to that > > directory or file tree. This allows you to create different > meta-data > > for the same directories, depending on how they are accessed from > > Zope (different subdir folders pointing at the same filesys path). > > > That's closer to how I was planning to allow access control > for specific > directories and files. The problem with this approach is that > I don't want > to make the objects that represent directories or files in > the local file > system persistent Zope objects, which would be necessary to > store access > control data in the ZODB. I like the 'access' file approach > for that reason, > but I don't like the fact that it wouldn't be manageable > throught the Zope > interface. I honestly haven't come up with a really good solution yet. Solution: Make the files/folder persistant but every request checks for the existance of its filesystem counterpart. If its gone then it gets deleted. Slow but it would work.

2 2

RE: [Zope] RE: Confera reply error
by Michel Pelletier 28 Oct '99

28 Oct '99

> -----Original Message----- > From: Thomas B. Passin [mailto:tpassin@mitretek.org] > Sent: Thursday, October 28, 1999 10:53 AM > To: zope(a)zope.org > Subject: Re: [Zope] RE: Confera reply error > > > Thanks, Cayce. This bug is gone in version 1.3.2, as you said. > > Now, Confera-people, can we get some wild-card action for searches? This is a vastly harder problem than it sounds. Basicly, there's no good speed/space tradeoff in indexes to get this done well. You can't simply regular-expression search through the index because this would require looking at every single word in the index, which could take a looooong time. To give you an example, htdig is probaby the most popular indexing engine in the open source world. It doesn't even do wildcard searching, the best it can do is 'substring' searching, and it has this to say about it: substring Matches all words containing the queries as substrings. Since this requires checking every word in the database, this can really slow down searches considerably. Due to the complexity of this problem, I don't know of any open source indexer that does this. There is a particularly interesting algorithm called 'n-grams' that will let you do simple 'globbing' (DOS style wildcards) but it does have an additional space requirement in the index. -Michel

1 0

Re: [Zope] RE: Confera reply error
by Thomas B. Passin 28 Oct '99

28 Oct '99

Thanks, Cayce. This bug is gone in version 1.3.2, as you said. Now, Confera-people, can we get some wild-card action for searches? Thoma Passin >From: Cayce Ullman <c_ullman(a)yahoo.com> > >I had the same problem running on linux, >it was fixed when I upgraded to Confera 1.3.2 >go get it here : > >http://www.mtg.co.at/projects/products/Confera/ > >Cayce > > >>I have the same error. Same versions, running on >>Win95. It looks like the wrong >>thing is being passed to regsub.gsub. Hope someone >>knows exactly what to fix. > > >----Original Message----- >From: davhsu(a)falcon.cchem.berkeley.edu ><davhsu(a)falcon.cchem.berkeley.edu> > > >>I can't post a reply to a Confera message. I'm >running Python 1.5.2, >>Confera 1.2.0, and Zope 2.0.1. Similar errors have >been posted in Zope >>archive mailing lists and bug reports, but no >solution or patch. Does >>anyone know of a fix? Thanks. >> > > > > > >===== > >__________________________________________________ >Do You Yahoo!? >Bid and sell for free at http://auctions.yahoo.com > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://www.zope.org/mailman/listinfo/zope > >(Related lists - please, no cross posts or HTML encoding! > >To receive general Zope announcements, see: >http://www.zope.org/mailman/listinfo/zope-announce > >For developer-specific issues, zope-dev(a)zope.org - >http://www.zope.org/mailman/listinfo/zope-dev )

1 0

Re: [Zope] HELP: downloading file from netscape/old IE can froze zope
by Gilles lavaux 28 Oct '99

28 Oct '99

Martin wrote: >What content-type is returned for the PNG images? If they are stored as >File or Image objects, you can see this on the Edit tab. If it doesn't say >'image/png' then this is your problem. The .png is stored as 'application/octet-stream', but I am not really concerned about what do the browser : I also store .exe .class .xml .zip etc.., everything. In almost all cases I am perfectly happy that the files are downloaded from zope to the computer. What I find not acceptable is that if the transfer doesn't complete for some reason, Zope froze. Like in my exemple with the cancel case: -You cancel the transfer, You close the browser. Zope is still unreacheable, and will never respond again. I HAVE to find a solution to this, by putting a timeout somewhere in the Http module or something else. I will try the python httpserver alone, to see if he is the responsible. If it's not him, it's some zope1_10_3 component, or I am wrong??. My last solution is to have a watch-dog which comunicate with Zope every n sec, then kill it/restart it if it doesn't reply. But it's a ugly solution. Gilles Lavaux >> >>I have just discovered a very nasty problem with Zope and all my versions of >>netscape(up to 4.6), and with the old verions of IE: >>- I put .PNG pictures in a folder.Clicking on thoses file open the 'save as' >>dislog box (I don't know why the extension is not recognized), if people >>press the cancel button at this time, Zope is frossen. The only thing to do >>is to kill the zope process and restart it. >> >>It's working fine with IE5. > >What content-type is returned for the PNG images? If they are stored as >File or Image objects, you can see this on the Edit tab. If it doesn't say >'image/png' then this is your problem. IE5 makes it's own decisions on the >content-type based on the extension, while most other browsers (correctly) >take the servers word for it. > > >-- >Martijn Pieters, Web Developer >| Antraciet http://www.antraciet.nl >| Tel: +31-35-7502100 Fax: +31-35-7502111 >| mailto:mj@antraciet.nl http://www.antraciet.nl/~mj >| PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 >------------------------------------------ >

2 1

Password
by Daniel G. Rusch 28 Oct '99

28 Oct '99

I'm trying to build an interface to allow users to change their passwords (only their passwords). I have no problem getting the new password and changing the old one. The problem is a professional site would ask the user to enter their current password and verify it is correct before they allow the user to change their password. The question then is does anyone have any ideas on how to compare a user entered password to what Zope has stored as the password? Thanks, DR

1 0

RE: [Zope] minor oops in Shared/DC/ZRDBA/DA.py
by Brian Lloyd 28 Oct '99

28 Oct '99

> --- DA.py.dist Thu Oct 28 21:58:16 1999 > +++ DA.py Thu Oct 28 21:58:37 1999 > @@ -379,7 +379,7 @@ > try: dbc=getattr(self, self.connection_id) > except AttributeError: > raise AttributeError, ( > - "The database connection, %s, > cannot be found.") > + "The database connection, %s, > cannot be found.",self.connection_id) > > try: DB__=dbc() > except: raise 'Database Error', ( Thanks - I've checked this fix in. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

1 0

How to handle file uploads in python?
by Chew Meng Kuan 28 Oct '99

28 Oct '99

Hi, I was able to create a simple ZClass to handle uploads/file attachment. No problem there. Next I want to do the same thing but use python instead with Jeff Rush's Poll product as a template. I'm currently stumped on the following piece of code: def manage_edit(self, field1, field2, field3, attachment, SUBMIT='Change', REQUEST=None): "Store Away Possibly-Modified Basic Attributes" self.field1 = field1 self.field2 = field2 self.field3 = field3 try: manage_addFile(id=attachment.filename, file=attachment) except: pass <snip> which only results in the following error message Error Type: IOError Error Value: [Errno 5] I/O error The python class subclasses CatalogAware as well as OFS.ObjectManager as I was hoping to be able to place the uploaded file in the object itself. I've scoured the mailing list as well as looked at the source code of some products but to no avail. Any ideas? Thanks, Meng Kuan

1 0

minor oops in Shared/DC/ZRDBA/DA.py
by Anthony Baxter 28 Oct '99

28 Oct '99

--- DA.py.dist Thu Oct 28 21:58:16 1999 +++ DA.py Thu Oct 28 21:58:37 1999 @@ -379,7 +379,7 @@ try: dbc=getattr(self, self.connection_id) except AttributeError: raise AttributeError, ( - "The database connection, %s, cannot be found.") + "The database connection, %s, cannot be found.",self.connection_id) try: DB__=dbc() except: raise 'Database Error', (

2 1

Re: [Zope] Zope.org performance (Was Re: [Zope] Front door on the Zope web site)
by Anthony Baxter 28 Oct '99

28 Oct '99

>>> Paul Everitt wrote > Still, we do need to keep an eye on making the software perform better. > I'm very very interested in the cache information reported earlier. > We'll tinker with that today on a test site. Mark Nottingham has been ragging on me for a while about Zope's behaviour with caching - he's probably willing to offer advice... (but as he's midway through moving hemispheres right now, I don't know how much time he's got...) Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

1 0

Re: [Zope] Zope Cacheability
by Jeff Rush 28 Oct '99

28 Oct '99

On Thu, 28 Oct 1999 10:09:38 +1000, Garth T Kidd wrote: >Why zpowered.jpg is cacheable but none of the others are is beyond me. >Whatever's going on, though, we should fix it. There's no reason those guys >can't be sending an accurate Last-modified and a reasonable Expires (say, an >hour or a day in the future -- how often are you going to change 'em?). I'd like to help in whatever way I can. I can say that there are currently no 'Expires' headers anywhere in the Zope source and that Zope has a (reported 2-days ago) bug that it's IF-MODIFIED-SINCE HTTP header conditional in OFS/Images.py is *backward*, resulting in odd updating of images. I'm also seeing occasional CONTENT-LENGTHs of zero, and then Zope shoves out an GIF image anyway, choking some browsers. I'm still trying to nail this one down before reporting futher. I may be doing something wrong in my objects. >The goal is simple: figure out what modifications can be made to Zope's >basic items so that they're at least reasonably cacheable. The best >reference for figuring out what headers we want to generate is probably >Mark's Caching Tutorial for Web Authors and Webmasters: > > http://www.mnot.net/cache_docs/ I'm off to read it so we can talk. I need to learn more re caching anyway to fix my dynamic image update problem. -Jeff Rush

2 1