February 2001 - Zope-Dev

Calling Python Scripts from Python Products
by Chris Withers 13 Feb '01

13 Feb '01

Hi, I was to call a Python Script from within a Python product and I'm wondering what to call it with so that context, container, script, namespace and subpath all get bound to the right things? cheers, Chris

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ProxyPass and SiteAccess getting REMOTE_ADDR
by William Noon 13 Feb '01

13 Feb '01

Last week I was setting up an Apache VirtualHost to point to a Zope object tree using the ProxyPass directive and SiteAccess to get all the urls right (great stuff!). However, I noticed that the REMOTE_ADDR was always set to the proxy host. This makes sense because Zope just gets the host/port from the socket connection. But I needed the real remote_addr for logging and user admin. Adding 'Header's wouldn't pass the info to Zope. The Zope mail archives mentioned the problem a couple of times without a configuration fix. A simple fix to the proxy module (in proxy_http.c) will create a new header called 'Original-Addr' to contain the client's ip address. Here is a context diff against Apache 1.3.14 that should work even in the new 2.0 servers: *************** *** 397,402 **** --- 397,404 ---- ap_bvputs(f, reqhdrs[i].key, ": ", reqhdrs[i].val, CRLF, NULL); } + ap_bvputs(f, "Original-Addr: ", r->connection->remote_ip, CRLF, NULL); + ap_bputs(CRLF, f); /* send the request data, if any. */ When the request was proxied, the Zope REQUEST will now have a key 'HTTP_ORIGINAL_ADDR' containing the client address. This key is also now a good indication that the http request went to the VirtualHost address. I then made a small change to SiteRoot.py to turn off the url mapping if HTTP_ORIGINAL_ADDR is present. This is a context diff against the SiteRoot.py file shipped with Zope 2.3.0: *************** *** 108,113 **** --- 108,116 ---- if '_SUPPRESS_SITEROOT' in _swallow(request): request.setVirtualRoot(request.steps) return + # only run if passed through ProxyPass + t = request.environ.get('HTTP_ORIGINAL_ADDR',None) + if t == None : return srd = [None, None] for i in (0, 1): srp = ('SiteRootBASE', 'SiteRootPATH')[i] These two patches have worked well and solved several problems. I hope others will find them useful. --Bill Noon Northeast Regional Climate Center Cornell University

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Re: [Zope-dev] manage_ methods
by Tres Seaver 13 Feb '01

13 Feb '01

Dieter Maurer <dieter(a)handshake.de> wrote: > Chris Withers writes: > > Is it true that you have to have the Manager role to use any > > methods that start with manage_? > No. > > "manage_" methods are mapped to permissions (as are any other methods). > You can decide which roles have which permissions. > > If you like, you can 'Anonymous' (or any other role) grant any > permission. As an existence proof, try tacking on '/manage_copyright' to the end of any Zopish URL (without authenticating), and re-read the beautiful purpleness of the ZPL. :) Tres. -- =============================================================== Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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RE: [Zope-dev] Virtual Host Monster Paranoia
by Toby Dickenson 13 Feb '01

13 Feb '01

> Then again, there's the advantage of having something > included as a standard part of Zope. Yes, thats true. I would like to see this being rolled into the standard zope (and there is a Collector entry saying that), although I think its unlikely given the 'competition' from VHM. Having said that, a big patch is worse than a small patch. And http://www.zope.org/Members/htrd/howto/host-server is a really tiny patch ;-)

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Re: [Zope-dev] manage_ methods
by Dieter Maurer 13 Feb '01

13 Feb '01

Chris Withers writes: > Is it true that you have to have the Manager role to use any methods that start > with manage_? No. "manage_" methods are mapped to permissions (as are any other methods). You can decide which roles have which permissions. If you like, you can 'Anonymous' (or any other role) grant any permission. Dieter

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ThreadSafeCounter 0.0.1 released
by morten＠esol.no 13 Feb '01

13 Feb '01

Hi guys, There's a new product available, which enables unique ids in a given context, take a look at <url:http://www.zope.org/Members/morphex/ThreadSafeCounter>. Cheers, Morten

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http headers
by Tim McLaughlin 12 Feb '01

12 Feb '01

Anyone know how I can log or view the http headers that Zope sends when it responds to a http request? Tim McLaughlin

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EmployX 0.0.2
by Johan Carlsson 12 Feb '01

12 Feb '01

I've put up the latest version of my DataSkin as Python Laboration Product I have done 2/3 of my goal, that is to have Plugin/DataSkins. (the next 4/3 will probably be to let a SQL-server take care of the attributes.) If anybody would have a peek it's at: http://www.zope.org/Members/johanc/ZPatterns/EmployX/EmployX-0.0.2.tgz/view Many thanks to Steve. Johan torped johan carlsson birkagatan 9 113 36 stockholm johanc(a)torped.se www.torped.se voice +46-(0)-8-32 31 23 mobil +46-(0)-70-558 25 24 workshop västmannagatan 67

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Programmatic way to get the Zope Version
by Chris Withers 12 Feb '01

12 Feb '01

Hi, I was if do something like: if zope_version >= 2.3: # balh else: # blah Where do I get the zope_version bti and what format will it be in? cheers, Chris

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DateTime Patch
by Casey Duncan 12 Feb '01

12 Feb '01

I have concluded that DateTime has bugs in its isCurrent* methods. Basically isCurrentMinute, isCurrentHour, isCurrentDay and isCurrentMonth all would return true at inappropriate times. For instance, isCurrentDay will currently return true if the day number of the date is equal to the current day number regardless of current month or year. The others behave in a similar manner. Attached is a patch for DateTime.py that fixes the above. I am also submitting it to the collector. Enjoy. -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------> *** DateTime.py.old Mon Feb 12 08:40:23 2001 --- DateTime.py Mon Feb 12 09:40:22 2001 *************** *** 1153,1180 **** that falls within the current month, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[1]==self._month def isCurrentDay(self): """Return true if this object represents a date/time that falls within the current day, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[2]==self._day def isCurrentHour(self): """Return true if this object represents a date/time that falls within the current hour, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[3]==self._hour def isCurrentMinute(self): """Return true if this object represents a date/time that falls within the current minute, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[4]==self._minute def earliestTime(self): """Return a new DateTime object that represents the earliest --- 1153,1186 ---- that falls within the current month, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month def isCurrentDay(self): """Return true if this object represents a date/time that falls within the current day, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day ! def isCurrentHour(self): """Return true if this object represents a date/time that falls within the current hour, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day and gmt[3]==self._hour def isCurrentMinute(self): """Return true if this object represents a date/time that falls within the current minute, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day and gmt[3]==self._hour and gmt[4]==self._minute ! def earliestTime(self): """Return a new DateTime object that represents the earliest

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