Hi Pieter,
On Wed, Oct 18, 2006 at 12:59:03PM +0200, Pieter Rautenbach wrote:
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> Oh, silly me! Here goes:
>
> [EMAIL PROTECTED] pymsnt-0.11.2-dev2]$ python src/legacy/msn/msnp11chl.py
> 13902169664655191882
> My output: 026184bdf82adcc7032c1d99330c683f
> Lars'output: 26184bdf82adcc7432c1d99330c683f2
>
> [EMAIL PROTECTED] pymsnt-0.11.2-dev2]$ python src/legacy/msn/msnp11chl.py
> 13038318816579321232
> My output: b01c13020e374d4fa20abfad6981b7a9
> Lars'output: b01c13020e374d4fa20abfad6981b7a9
>
> The first one doesn't match your result, but the second does.
>
> I forgot to mention my platform in my first post:
>
> [EMAIL PROTECTED] pymsnt-0.11.2-dev2]$ uname -a
> Linux lutetium.mxit.co.za 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006
> x86_64 x86_64 x86_64 GNU/Linux
Okay, I think I figured out what's wrong. Apparently struct.unpack has
changed behaviour between Python 2.4 and Python 2.5. Consider the
following two lines of code:
import struct
print type(struct.unpack(">L", "xxxx")[0])
With Python 2.4 this will return "<type 'long'>". With Python 2.5,
however, it returns "<type 'int'>". This becomes a problem in line 58 of
msnp11chl.py, as the hex representation is now missing an L at the end.
It looks like it's only an issue on 64-bit architectures tough.
I'm not sure if this is actually a bug in Python 2.5. I've made a quick
patch to workaround the issue, but I'm not sure if it will break
anything else. :-)
Best regards,
Lars
Index: src/legacy/msn/msnp11chl.py
===================================================================
--- src/legacy/msn/msnp11chl.py (revision 228)
+++ src/legacy/msn/msnp11chl.py (working copy)
@@ -62,7 +62,7 @@
return out
def littleEndify(num, c="L"):
- return struct.unpack(">" + c, struct.pack("<" + c, num))[0]
+ return long(struct.unpack(">" + c, struct.pack("<" + c, num))[0])
if __name__ == "__main__":
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