[python-win32] calling a dll after python 2.3 pywin32-208
EdShallow
ed.shallow at gmail.com
Sat May 19 17:22:32 CEST 2012
Hi Mark,
After much more testing here is some more to go on:
Background again:
- I have a VisualBasic-generated ActiveX COM object called
capiCrypto.clsCrypto
- I call it like this
clsCrypto = win32com.client.Dispatch("capiCrypto.clsCrypto")
clsCrypto.InStringBuffer = newCert
clsCrypto.CRLFileName = self.Request.FqdnCRL
result = clsCrypto.CheckCertBufferAgainstCRLFile()
- it was generated on WinXP SP2
- It can successfully be called from Python 2.3 win32-208 without problem
- As soon as I upgrade to Python 2.7 I get this stack trace without
touching the dll or its registration
2012/05/19 10:18:12 INFO Traceback (most recent call last):
File "cherrypy\_cphttptools.pyo", line 271, in run
File "cherrypy\_cphttptools.pyo", line 502, in main
File "checkcertcrld.pyw", line 113, in crlHandler
File "CrlDispatch.pyo", line 121, in handle
File "CheckCertCrl.pyo", line 38, in execute
File "<COMObject capiCrypto.clsCrypto>", line 3, in
CheckCertBufferAgainstCRLFile
com_error: (-2147417851, 'The server threw an exception.', None, None)
Now here is some strange feedback . . .
- Knowing that everything was OK with Python 2.3, I isolated the above code
in its own HTTP process and py2exe'ed it thinking py2exe would preserve the
whole 2.3 call environment
- My thought was I would call the HTTP daemon which was packaged with 2.3
and 208 from my 2.7 environment both in their own py2exe-created exe's one
in 2.7 the other in 2.3
- So check this, the very first call to the dll in the 2.3 exe from the 2.7
exe worked !!! Then all successive calls failed ????
- here is the log:
2012/05/19 08:53:28 INFO CheckCertCRL completed with TransactionStatus
===> 1763 and TransactionStatusString ==> Certificate Revocation Check
failed Current time is NOT within the CRL validity period
2012/05/19 10:18:12 HTTP INFO 127.0.0.1 - POST /crlHandler HTTP/1.1
2012/05/19 10:18:12 INFO Traceback (most recent call last):
File "cherrypy\_cphttptools.pyo", line 271, in run
File "cherrypy\_cphttptools.pyo", line 502, in main
File "checkcertcrld.pyw", line 113, in crlHandler
File "CrlDispatch.pyo", line 121, in handle
File "CheckCertCrl.pyo", line 38, in execute
File "<COMObject capiCrypto.clsCrypto>", line 3, in
CheckCertBufferAgainstCRLFile
com_error: (-2147417851, 'The server threw an exception.', None, None)
- Note the first call which successfully checked the revocation status of a
certificate and returned a 1763 indicating a successful call to the COM dll
(although the cert check failed)
- Every subsequent time I called the dll it fails ???
- Something happened in the environment after the first call and I have no
clue ???
Ed
On Mon, May 14, 2012 at 8:50 AM, Mark Hammond <mhammond at skippinet.com.au>wrote:
> [re-adding python-win32 - please keep replies on list]
>
>
> On 14/05/2012 10:39 PM, EdShallow wrote:
>
>> Hi Mark,
>>
>> Python 2.3 with pywin32-208 works. The error I receive reads
>> "Object through and exception at line 3".
>>
>
> How do you get that error? You say "my dll throws an exception
> immediately upon entry" - I can't reconcile that "with the error I
> receive". What does Python do when calling your failing DLL? (ie, do you
> get a traceback? If so, please include it completely. If not, what result
> does Python get? I'm still very unclear on the context of your problem.
>
>
> Un-registering and re-registering the dll does not help.
>>
>
> But that's just unregistering and re-registering your DLL right?
>
>
> The test was conducted on the same machine after uninstalling
>> Python and re-installing numerous combinations of Python 2.4, 2.5, 2.6,
>> 2.7 with associated pywin32-208 thry pywin32-214.
>>
>> If I uninstall the newer Python and re-install Python 2.3 and
>> pywin32-208 all is OK again. It is definitely environmental as opposed
>> to the code.
>>
>
> Well - it's *someone's* code :) To be clear, 2.3 + pywin32 209 fails?
>
> Mark
>
>>
>> Thanks,
>> Ed
>>
>> On Sun, May 13, 2012 at 9:07 PM, Mark Hammond <skippy.hammond at gmail.com
>> <mailto:skippy.hammond at gmail.**com <skippy.hammond at gmail.com>>> wrote:
>>
>> You haven't given us enough information to help. What error do you
>> see? What is the most recent combination of Python and pywin32 that
>> works?
>>
>> Mark
>>
>>
>> On 12/05/2012 10:31 PM, EdShallow wrote:
>>
>> Hi Folks,
>>
>> I have an ActiveX COM dll generated by VisualBasic 6 in
>> WinXP. I
>> can call it and use it successfully with Python 2.3 and pywin32-208
>> without problems.
>>
>> As soon as I upgrade either pywin32- or Python to anything
>> itself
>> to anything newer, my dll throws an exception immediately upon
>> entry.
>>
>> Can anyone point me in a general direction with respect to
>> addressing this incompatibility?
>>
>> Thanks,
>> Ed
>>
>> --
>> Ed's Contact Information:
>> Mobile Phone: 613-852-6410 <tel:613-852-6410>
>> Gmail: ed.shallow at gmail.com <mailto:ed.shallow at gmail.com>
>> <mailto:ed.shallow at gmail.com <mailto:ed.shallow at gmail.com>>
>> VOIP Address: 107529 at sip.ca1.voip.ms
>> <mailto:107529 at sip.ca1.voip.ms**> <mailto:107529 at sip.ca1.voip.ms
>> <mailto:107529 at sip.ca1.voip.ms**>__>
>>
>> VOIP DID#: 613-458-5004 <tel:613-458-5004>
>> Skype ID: edward.shallow
>> Home Phone: 613-482-2090 <tel:613-482-2090>
>>
>>
>>
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>> >
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>>
>>
>>
>>
>>
>> --
>> Ed's Contact Information:
>> Mobile Phone: 613-852-6410
>> Gmail: ed.shallow at gmail.com <mailto:ed.shallow at gmail.com>
>> VOIP Address: 107529 at sip.ca1.voip.ms <mailto:107529 at sip.ca1.voip.ms**>
>> VOIP DID#: 613-458-5004
>> Skype ID: edward.shallow
>> Home Phone: 613-482-2090
>>
>>
>
>
--
Ed's Contact Information:
Mobile Phone: 613-852-6410
Gmail: ed.shallow at gmail.com
VOIP Address: 107529 at sip.ca1.voip.ms
VOIP DID#: 613-458-5004
Skype ID: edward.shallow
Home Phone: 613-482-2090
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