Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this.
(For session persistence in approx - my cgi proxy)
Regards,
Fuzzy http://www.voidspace.org.uk/atlantib...thonutils.html 11  2345  fu******@gmail. com (Michael Foord) writes: Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this.
[...]
There shouldn't be any problem with that. You can pickle the
CookieJar itself, or the cookies inside it ([c for c in cookiejar] --
and use .set_cookie() to get them back into a new CookieJar).
May I suggest instead using cookielib, from Python CVS? (note that
POSTs with urllib2 are broken in 2.4a2, so don't use that)
cookielib is a new module in 2.4, and is a cleaned-up version of the
cookie-handling parts of ClientCookie.
John fu******@gmail. com (Michael Foord) writes: Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this.
(For session persistence in approx - my cgi proxy)
Just thought to add:
1. are you using a database for this? (you should be) Look at
BSDDBCookieJar. BSDDBCookieJar isn't well-tested, but might be
just the ticket for what you're doing. It's not in cookielib yet,
but the one from ClientCookie 0.9.x should work fine with
cookielib, and I'll make it available in a separate package RSN,
along with the other stuff in ClientCookie but not in cookielib.
2. here's a simpler way (in a sense) of serialising a CookieJar than
pickling:
cj = cookielib.Cooki eJar()
....
s = [repr(c) for c in cj]
and unserialising:
cj = cookielib.Cooki eJar()
for cs in s:
cj.set_cookie(e val(cs))
....
You'd still need to write something like BSDDBCookieJar, though, if
I understand what you're doing.
John jj*@pobox.com (John J. Lee) wrote in message news:<87******* *****@pobox.com >... fu******@gmail. com (Michael Foord) writes:
Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this. [...]
There shouldn't be any problem with that. You can pickle the
CookieJar itself, or the cookies inside it ([c for c in cookiejar] --
and use .set_cookie() to get them back into a new CookieJar).
At the moment I can't get at the cookies at *all*. Can you see what
I'm doing wrong.
Here's my code (simplified) :
import ClientCookie
openfun = ClientCookie.ur lopen
cj = ClientCookie.Co okieJar()
req = ClientCookie.Re quest(theurl, txdata, txheaders)
u = openfun(req)
info = u.info()
print '<PRE>' # This is ina CGI after all :-)
print info # This prints the headers from the server
print
print 'Cookies :'
print cj
for c in cj:
print c
print '</PRE>'
Now if I set theurl to 'http://www.google.co.u k' I get the following
response :
(txdata=None, txheaders={ 'User-agent': 'Mozilla/4.0 (compatible; MSIE
5.5; Windows NT)' })
<PRE>
Cache-Control: private
Content-Type: text/html
Set-Cookie: PREF=ID=0bac71b 03c6b1aa8:LD=en :TM=1092300998: LM=1092300998:S =YasA-Kgirv2NPnd9;
expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/; domain=.google. co.uk
Server: GWS/2.1
Content-Length: 2901
Date: Thu, 12 Aug 2004 08:56:38 GMT
X-Cache: MISS from dav-serv.tbsmerchan ts.co.uk
Proxy-Connection: close
Cookies :
<ClientCookie._ ClientCookie.Co okieJar[]>
</PRE>
And I'm getting this consistently - I can see a cookie in the header,
but it never appears in the CookieJar - so loading and saving the
CookieJar is of no avail.
I'm sure I'm making an obvious mistake - but short of subclassing the
CookieProcessor and doing it all manually (which seems overkill) - I'm
a bit stumped.
May I suggest instead using cookielib, from Python CVS? (note that
POSTs with urllib2 are broken in 2.4a2, so don't use that)
cookielib is a new module in 2.4, and is a cleaned-up version of the
cookie-handling parts of ClientCookie.
I'll have a look in a bit... once I can get any kind of response !!
Thanks for your help.
Fuzzy
http://www.voidspace.org.uk/atlantib...thonutils.html
John jj*@pobox.com (John J. Lee) wrote in message news:<87******* *****@pobox.com >... fu******@gmail. com (Michael Foord) writes:
Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this.
(For session persistence in approx - my cgi proxy)
Just thought to add:
1. are you using a database for this? (you should be) Look at
BSDDBCookieJar. BSDDBCookieJar isn't well-tested, but might be
just the ticket for what you're doing. It's not in cookielib yet,
but the one from ClientCookie 0.9.x should work fine with
cookielib, and I'll make it available in a separate package RSN,
along with the other stuff in ClientCookie but not in cookielib.
The program I'm writing is a CGI. I'd like to have *minimum*
dependencies.
The version of Python on the server is 2.2 (I have no control over
that) and having a dependence on CookieClient is enough for me. I
think I can only use BSDDBCookieJar if the server has the Berkely
Database installed ? I'd like other people to be able to use my CGI on
a basic Python 2.2 install - so even if I have it on my server, I
don't want to be dependent on it.
What I'm aiming to provide is persistent cookie support for multiple
users of the same CGI - so I'll probably assign each user an id number
via a cookie I give to them and have a pickled CookieJar for each
user.
I'd also like to work towards cookie management as well - so each user
can see/edit/control which cookies they have saved.
At the moment getting it to work at all would be a bonus........
Regards,
Fuzzy
http://www.voidspace.org.uk/atlantib...thonutils.html
2. here's a simpler way (in a sense) of serialising a CookieJar than
pickling:
cj = cookielib.Cooki eJar()
...
s = [repr(c) for c in cj]
and unserialising:
cj = cookielib.Cooki eJar()
for cs in s:
cj.set_cookie(e val(cs))
...
You'd still need to write something like BSDDBCookieJar, though, if
I understand what you're doing.
John fu******@gmail. com (Michael Foord) wrote in message news:<6f******* *************** ****@posting.go ogle.com>... Has anyone used ClientCookie to store cookies ?
I'm going to play around with 'pickling cookies' - but I wondered if
anyone had any experience of this.
(For session persistence in approx - my cgi proxy)
Regards,
Fuzzy
http://www.voidspace.org.uk/atlantib...thonutils.html
Ok, I've got somewhere.
I'm now using the 0.9 version and I found the debugging section in the
docs.
I'm using the example from the docs - but I'm pickling a list of the
pickles rather than using the load and save methods (as the docs
suggest) because I get an NotImplemented error for the save method (so
what use is the load method ?).
COOKIEFILE = 'cookies.pkl'
import ClientCookie
openfun = ClientCookie.ur lopen
cj = ClientCookie.Co okieJar()
opener = ClientCookie.bu ild_opener(Clie ntCookie.HTTPCo okieProcessor(c j))
ClientCookie.in stall_opener(op ener)
if os.path.isfile( COOKIEFILE):
cookies = open(COOKIEFILE , 'rb')
for entry in pickle.load(coo kies):
cj.set_cookie(e ntry)
cookies.close()
cookies = open(COOKIEFILE , 'wb')
pickle.dump([c for c in cj], cookies)
cookies.close()
req = ClientCookie.Re quest(theurl)
req.add_header( 'User-agent', 'Mozilla/4.0 (compatible; MSIE 5.5;
Windows NT)')
u = openfun(req)
info = u.info()
print HR
print '<PRE>'
print info # print the headers
print
print 'Cookies :'
a = 0
for c in cj:
a += 1
print a, c.__repr__() # print each cookie
print '</PRE>'
and I'm now seeing persistent cookies..... hurrah.......
Can I save each cookie as a line of text ? Would that work with the
load method ?
Anyway - now I need to learn about server side cookies so that I can
give each user an 'id' and also write code to clean up unused cookie
files...
*Then* I need to do a seperate CGI that will let users 'manage' their
cookies. (So I'll need to start understanding cookies a bit more)
Great
Regards,
Fuzzy http://www.voidspace.org.uk/atlantib...thonutils.html fu******@gmail. com (Michael Foord) writes:
[...] The program I'm writing is a CGI. I'd like to have *minimum*
dependencies.
The version of Python on the server is 2.2 (I have no control over
that) and having a dependence on CookieClient is enough for me. I
think I can only use BSDDBCookieJar if the server has the Berkely
Database installed ?
Yes.
I'd like other people to be able to use my CGI on
a basic Python 2.2 install - so even if I have it on my server, I
don't want to be dependent on it.
[...]
The BSDDB-wrapper is a fairly standard Python std. lib. module for
unix machines. I don't know what small-scale commercial CGI hosting
companies offer ATM, though.
John fu******@gmail. com (Michael Foord) writes:
[...] At the moment I can't get at the cookies at *all*. Can you see what
I'm doing wrong.
Here's my code (simplified) :
[...] cj = ClientCookie.Co okieJar()
req = ClientCookie.Re quest(theurl, txdata, txheaders)
u = openfun(req)
[...]
It's not magic! You aren't using cj anywhere!
John fu******@gmail. com (Michael Foord) writes:
[...] Ok, I've got somewhere.
I'm now using the 0.9 version and I found the debugging section in the
docs.
I'm using the example from the docs - but I'm pickling a list of the
pickles rather than using the load and save methods (as the docs
suggest) because I get an NotImplemented error for the save method (so
what use is the load method ?).
I suppose you're trying to use FileCookieJar. That's an abstract base
class. In other words, you're not supposed to use it directly.
You're supposed to use one of its subclasses, such as LWPCookieJar,
MSIECookieJar or MozillaCookieJa r. The standard meaning of
NotImplementedE rror is not "oops, I haven't got round to that", but
rather "don't do that; use a subclass instead".
MSIECookieJar can't save cookies because the format used by Windows
isn't documented (there is an API function, but I don't use it).
[...] and I'm now seeing persistent cookies..... hurrah.......
Can I save each cookie as a line of text ? Would that work with the
load method ?
Yes. Use LWPCookieJar.
Anyway - now I need to learn about server side cookies so that I can
give each user an 'id'
Have a look at some of the Python web frameworks.
and also write code to clean up unused cookie
files...
[...]
Either
- simply always have one file per user, and persist it by whatever
means you like (LWPCookieJar, pickling,
outfile.write(' \n'.join([repr(c) for c in cookiejar])),
whatever...)
or
- write a CookieJar that hides its implementation in terms of
multiple files (and implements .clear_expired_ cookies(), etc.).
Probably not a good idea.
John jj*@pobox.com (John J. Lee) wrote in message news:<87******* *****@pobox.com >... fu******@gmail. com (Michael Foord) writes:
[...] Ok, I've got somewhere.
I'm now using the 0.9 version and I found the debugging section in the
docs.
I'm using the example from the docs - but I'm pickling a list of the
pickles rather than using the load and save methods (as the docs
suggest) because I get an NotImplemented error for the save method (so
what use is the load method ?).
I suppose you're trying to use FileCookieJar. That's an abstract base
class. In other words, you're not supposed to use it directly.
You're supposed to use one of its subclasses, such as LWPCookieJar,
MSIECookieJar or MozillaCookieJa r. The standard meaning of
NotImplementedE rror is not "oops, I haven't got round to that", but
rather "don't do that; use a subclass instead".
No - I was following hte docs - which just shows CookieJar IIRC :-)
Now that I'm using LWPCookieJar everything is wonderful and works fine...
I'm nopw learning about cookies and authentication. ...
Many Thanks
Fuzzyman http://www.voidspace.org.uk/atlantib...thonutils.html This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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