problems with module Cookie

[Manlio Perillo]

Hi.
I'm using the Cookie module (on the client side).
I have found a problem trying to parse the cookie:

"Set-Cookie: value=thevalue; path=/;
expires=Fri, 21-May-2004 10:40:51 GMT"

The date is not parsed correctly, only "Fri," is matched.
Thanks and regards Manlio Perillo

[Jarek Zgoda]

Manlio Perillo <NO************ ******@libero.i t> pisze:

I'm using the Cookie module (on the client side).
I have found a problem trying to parse the cookie:

"Set-Cookie: value=thevalue; path=/;
expires=Fri, 21-May-2004 10:40:51 GMT"

You must use date in UTC format.

--
Jarek Zgoda
http://jpa.berlios.de/

[Manlio Perillo]

On Sat, 22 May 2004 20:06:45 +0000 (UTC), Jarek Zgoda
<jz****@gazeta. usun.pl> wrote:

Manlio Perillo <NO************ ******@libero.i t> pisze:

I'm using the Cookie module (on the client side).
^^^ I have found a problem trying to parse the cookie:

"Set-Cookie: value=thevalue; path=/;
expires=Fri, 21-May-2004 10:40:51 GMT"

You must use date in UTC format.

This is the date format used by the server cookie!


Thanks and Regards Manlio Perillo

[Jarek Zgoda]

Manlio Perillo <NO************ ******@libero.i t> pisze:

I'm using the Cookie module (on the client side).
^^^ I have found a problem trying to parse the cookie:

"Set-Cookie: value=thevalue; path=/;
expires=Fri, 21-May-2004 10:40:51 GMT"

You must use date in UTC format.

This is the date format used by the server cookie!

See http://www.w3.org/TR/NOTE-datetime on how should date look in
cookies. If date is not in valid format, the module functions may have
trouble decoding it.

--
Jarek Zgoda
http://jpa.berlios.de/

[Manlio Perillo]

On Sun, 23 May 2004 18:36:52 GMT, JanC <us*********@ja nc.invalid>
wrote:

Manlio Perillo <NO************ ******@libero.i t> schreef:

I'm using the Cookie module (on the client side).

Do you know the ClientCookie module?
<http://wwwsearch.sourc eforge.net/ClientCookie/>

Yes, I know; but the standard Cookie module is sufficient.

Thanks and regards

[Manlio Perillo]

On Sun, 23 May 2004 17:12:25 +0000 (UTC), Jarek Zgoda
<jz****@gazeta. usun.pl> wrote:

Manlio Perillo <NO************ ******@libero.i t> pisze:

>You must use date in UTC format.
This is the date format used by the server cookie!
See http://www.w3.org/TR/NOTE-datetime on how should date look in
cookies. If date is not in valid format, the module functions may have
trouble decoding it.
It is not a my problem!

As you see, it's your problem, since it's you who cann't decode this
cookie. ;)

The problem is also of Cookie module.

The web server follow the Netscape specification for Cookies and in
this spec the date is in the format I have posted.

Netscape is not internet God, W3C is.

Unfortunately we don't live in a perfect world... ;)
I never tried to read cookies using Cookie module (I used Python only
for writing), so I cann't help more here. Good luck.

Ok, thanks.

Regards Manlio Perillo

[John J. Lee]

Manlio Perillo <NO************ ******@libero.i t> writes:
[...]

I'm trying to fix the regular expression patternin Cookie.py but it
does not work:

[...]

Yeah, IIRC there's some odd stuff in there, that doesn't even seem to
come from the standards, let alone reality ;-)

The Cookie module really doesn't know how to handle cookies on the
client side. Use this, which does:

http://wwwsearch.sf.net/ClientCookie/
You can just say:

ClientCookie.ur lopen("http://www.example.com/")

and be done with it.
John

[Manlio Perillo]

On 27 May 2004 22:52:10 +0100, jj*@pobox.com (John J. Lee) wrote:

Manlio Perillo <NO************ ******@libero.i t> writes:
[...]

I'm trying to fix the regular expression patternin Cookie.py but it
does not work:[...]

Yeah, IIRC there's some odd stuff in there, that doesn't even seem to
come from the standards, let alone reality ;-)

I have fixed the pattern.
For matching spaces it is needed '\ ' and not ' '.

Here is the code.
Now the Cookie parse the Netscape format.
_LegalCharsPatt = r"[\w\d!#%&'~_`><@ ,:/\$\*\+\-\.\^\|\)\(\?\}\ {\=]"

_WeekPatt = r"(?:Mon|Tue|We d|Thu|Fri|Sat|S un)"
_MonthPatt = r"(?:Jan|Feb|Ma r|Apr|May|Jun|J ul|Aug|Sep|Oct| Nov|Dec)"

_DatePatt = r"(?:" + _WeekPatt + r",\ \d{2}-" + _MonthPatt +\
r"-\d{4}\ \d{2}:\d{2}:\d{ 2}\ GMT)"

_CookiePattern = re.compile(
r"(?x)" # This is a Verbose pattern
r"(?P<key>" # Start of group 'key'
""+ _LegalCharsPatt +"+?" # Any word of at least one letter,\
nongreedy
r")" # End of group 'key'
r"\s*=\s*" # Equal Sign
r"(?P<val>" # Start of group 'val'
r'"(?:[^\\"]|\\.)*"' # Any doublequoted string
r"|" # or
""+ _DatePatt + "" # A date as specified by Netscape\
spec
r"|" # or
""+ _LegalCharsPatt +"*" # Any word or empty string
r")" # End of group 'val'
r"\s*;?" # Probably ending in a semi-colon
)

I also have added a method to BaseCookie that behaves like
Morsel.OutputSt ring:

def OutputString(se lf, attrs=None, sep='\n'):
"""Return a string suitable for HTTP.
"""
result = []
items = self.items()
items.sort()
for K,V in items:
result.append( V.OutputString( attrs) )
return sep.join(result )

Now the Cookie is usable on the client side too.
The Cookie module really doesn't know how to handle cookies on the
client side.

It does not matter, all the cookie logic for my program is very very
simple and standard Cookie is all I need.
Use this, which does:

http://wwwsearch.sf.net/ClientCookie/
You can just say:

ClientCookie.u rlopen("http://www.example.com/")

and be done with it.

I have seen the module, but it is too complicated.
Standard Cookie module (with my corrections) plus httplib module is
really all I need.

Thanks and regards Manlio Perillo

[John J. Lee]

Manlio Perillo <NO************ ******@libero.i t> writes:

On 27 May 2004 22:52:10 +0100, jj*@pobox.com (John J. Lee) wrote: [...]

You can just say:

ClientCookie.u rlopen("http://www.example.com/")

and be done with it.

I have seen the module, but it is too complicated.

Having written it, I agree, but I don't think it's my fault <wink>.

Standard Cookie module (with my corrections) plus httplib module is
really all I need.

Cool.
John

[Manlio Perillo]

On 29 May 2004 12:26:59 +0100, jj*@pobox.com (John J. Lee) wrote:

Manlio Perillo <NO************ ******@libero.i t> writes:

On 27 May 2004 22:52:10 +0100, jj*@pobox.com (John J. Lee) wrote:[...]

>You can just say:
>
>ClientCookie.u rlopen("http://www.example.com/")
>
>and be done with it.
>

I have seen the module, but it is too complicated.

Having written it, I agree, but I don't think it's my fault <wink>.

Well, it is too complicated for me.

Standard Cookie module (with my corrections) plus httplib module is
really all I need.

Cool.

Yes, there exists programs that are simple (as there exist programming
languages that are simple)!

Actually what I do is to download several files from a server.
Some files/pages are generated by a script (so I have to post an
x-www-form-urlencoded string).

I don't want to use urllib2 because it (as I think) for every request
connects to the server, do the request and disconnect.

I need cookies because the server (as many other) authenticate user
with cookies.
So the simple algorithm is:

-connect to the server
-read a cookie from a file
-send the cookie to the server
-if the server send a cookie, the old one must be updated: with
standard Cookie this is simple: cookie.update(n ewcookie)
- ...
- save the cookie to a file
This is very simple to do with httplib and Cookie modules, so why to
use more involved modules?

Regards Manlio Perillo