August 2002 - Zope-Dev

DCOracle2 Binding Array
by brian.r.brinegar.1 09 Aug '02

09 Aug '02

While using the DCOracle2 module outside of Zope I recieve the following traceback: Traceback (most recent call last): File "/dev/fd/4", line 206, in ? File "/dev/fd/4", line 206, in ? File "./modules/Calendar.py", line 193, in dayGroupView reservation = Reservation(conflict) File "./modules/Reservation.py", line 27, in __init__ self.load(id) File "./modules/Reservation.py", line 134, in load sth.execute(sql, id) File "/opt/python/2.2.1-update1/sparc-sunos5.8/lib/python2.2/site-packages/DCOracle2/DCOracle2.py", line 876, in execute return self.executemany(operation,p) File "/opt/python/2.2.1-update1/sparc-sunos5.8/lib/python2.2/site-packages/DCOracle2/DCOracle2.py", line 1036, in executemany baoa[c][br] = p OverflowError: Assigned value too large for Binding Array I have tried the SQL outside of python and it works fine. This also worked correctly before upgrading to DCOracle2. Any help? Thanks, -Brian

1 0

REQUEST object -> where's the body?
by Michael Beaulieu 07 Aug '02

07 Aug '02

I'd like to get the body from a HTTP Request ( method="POST" ) ( I'm trying to submit data but not with a browser...) Can anybody tell me how to get the body? I'm trying to set the request like this: req.putHeader("Content-Length",str(len(some_string)) ) req.endHeaders() . . req.send(some_string) thanks Mike

3 2

compile product without restarting zope
by Axel Bock 07 Aug '02

07 Aug '02

Hi, I have a question: I am developing a Zope product, and I am wondering if it is possible to publish a changed product (which is a python product file which has to be compiled) without always restarting Zope. Can anyone give hints? Thanks in advance and bye, Axel.

2 1

hotfix and security declaration
by Yuppie 07 Aug '02

07 Aug '02

Hi! Writing a hotfix for my product, I have same questions about security declarations. The ZDG doesn't cover this. 1.) adding a new Method: Is the following code safe? Or is there a better way to do that? <code> from Globals import InitializeClass from AccessControl import ClassSecurityInfo from Products.oldProduct import oldClass def newMethod(self): pass oldClass.security = ClassSecurityInfo() oldClass.security.declareProtected( 'View', 'newMethod' ) oldClass.newMethod = newMethod InitializeClass(oldClass) </code> 2.) override security declaration: <code> oldClass.security.declareProtected( 'View', 'oldMethod' ) InitializeClass(oldClass) </code> This code raises a conflict warning and doesn't change the setting. The ZDG says: "it is not legal to declare two conflicting permissions on a method". Why is it illegal? Why will it only accept the first declaration and not override it? Is there an other solution? Thanks! Yuppie

4 4

Memory Leaks
by Andy McKay 07 Aug '02

07 Aug '02

Hey all, A client of mine seems to be plagued with memory leaks. I have a CMF / Plone site on We fixed some security issues that caused a major leak this is the same I believe as http://collector.zope.org/Zope/421, by jiggling settings this no longer an issue. Anyway we are still getting some minor leaks that severly limit the amount of the traffic the box is going to be able take. Lots of different objects are being leaked, including good old DateTime, however I dont believe its this, DateTime just happens to be there. Possible culprits are (trimmed down debug page) ZPT: Products.PageTemplates.Expressions.PathExpr, Products.PageTemplates.Expressions.SubPathExpr, Products.PageTemplates.TALES.TALESError etc... or AccessControl AccessControl.unauthorized.Unauthorized, AccessControl.SecurityManager.SecurityManager etc... A quick rummage through LeakFinder hasn't helped too much so Im not sure what too recommend. Good old install ZEO and restart Zope every few hours? Is anyone else having issues? Configuration: Plone 0.99 "Almost There" CMF Beta 1.3 beta 1 Zope 2.5.1 Python 2.1.3 RedHat Linux 7.1 Using Apache and pcgi to serve... -- Andy McKay

5 7

passing variable between zope and asp
by Faye Chiao 07 Aug '02

07 Aug '02

Hello, We are trying to pass a string between two websites, from one developed with Zope, to the other written in html/asp. Would you have any suggestions as to how we might do this? We have considered stuffing the data into the url string, but are wondering if there is an alternate, perhaps more secure method. Thanks, FY

2 1

Unexpected IOError / print in external Product class
by Robert Thomson 07 Aug '02

07 Aug '02

Just recently my Zope instance started giving IOErrors when using "print" from a custom Product.. we've been using print for debugging purposes and up until now, this has worked well.. It doesn't IOError every time, though.. in fact, it appears to only IOError every second time when it hits print... so a page reload will succeed. At the moment I'm baffled, and am assuming it's a strange zope occurance which I hope someone else has encountered before, and solved. Zope version is 2.5.0. Cheers, Rob -- Your mistakes are the only thing you'll ever truly own. Everything else someone will take credit for.

2 1

Zope components and revision control with cvs
by Mehran erfani 07 Aug '02

07 Aug '02

I am a newbie to the zope world and recently started using zope in our corporate development environment. One thing that I couldn't find so far is an easy way to use cvs for revision control for individual components developed in zope. I understand that zope has its own version control system and mechanism. But still in a corporate frame work it might be desirable to find a way to be able to use systems such as cvs to do revision control outside the frame of zope. I am pretty much familiar with export and import facilities in zope, but I am sure we all agree that importing and exporting individual components of a big project is going to be quite cumbersome. On the other hand import and export of a zope project as whole is not going to be helpful in using cvs either.... so I am puzzled! Is there anyone out there who has a suggestion on this issue? Is there anyway around this? Does zope provide some API to be able to export and import components in group...Is there any product out there that would automate one such a procedure? I would appreciate it if anyone can help. Thanks. __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com

9 19

passive FTP to Zope with a specified port-range
by Mr Tobias Schiebeck 06 Aug '02

06 Aug '02

Hi, I'm trying to modify the zope ftp-access to specify a port range within the server selects the ports for the passive ftp communication with the ftp-clients. This is in order to have the Zope server behind a firewall blocking more then the privileged ports only. I managed to modify the passive_acceptor within the medusa ftp server file. The problem I have is that certain FTP clients (e.g. gftp) close there connection because of messages coming from the server. The code I have modified is in /usr/lib/zope/ZServer/medusa/ftp_server.py class passive_acceptor (asyncore.dispatcher): ready = None def __init__ (self, control_channel): # connect_fun (conn, addr) asyncore.dispatcher.__init__ (self) self.control_channel = control_channel self.create_socket (socket.AF_INET, socket.SOCK_STREAM) to=open('/tmp/zope.log','a') for i in range(10000,11000): # bind to an address on the interface that the # control connection is coming from. to.write("ftp connection - port %d\n"%i) bres = self.bind (( self.control_channel.getsockname()[0], i )) to.write("ftp connection - bind:"+`bres`+"\n") if bres == None : break self.addr = self.getsockname() self.listen (1) to.close() Accessing the Zope-server through a firewall that has only the ports 10000 to 11000 open using gftp allows the firs connection but disconnects with an error message when I change the directory. The error message is: 451 Server Error: socket.error, (98,'Address already in use'): file: /usr/lib/zope/ZServer/medusa/asyncore.py line: 250 Do you have any hints on this? Thanks and Best Regards Tobias -- --------------------------------------------------------------------- Tobias Schiebeck tobias.schiebeck(a)man.ac.uk International AVS Centre Manchester Visualization Centre http://www.iavsc.org tel: (+44) 161-275-6870 ---------------------------------------------------------------------

5 5

Removing the acquisition wrapper from an object (Python script)
by Gilles Lenfant 05 Aug '02

05 Aug '02

Hi, aq_base(someObject) doesn't work in a python script. I need to get an object without its acquisition wrapper. Any hint ? Many thanks in advance --Gilles

7 12