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imaplib: support for more cyrus extension : expire

setacl and getacl look to be already "Cyrus" specific (according the
doc),
why not to extend imaplib a little bit more ?

Here are some code I wrote and tested to support cyrus "expire" that
manage how long a message
can stay into a mailbox.
This is usefull for NEWS server !

The code is preceded by lot of sample.
I wrote the 2 generic functions getannotation and setannotation that
coul be used with any IMAP server.
And use them to access the Cyrus extensions !
I tried to use http://www.potaroo.net/ietf/all-ids/draft-daboo-imap-
annotatemore-00.txt
but used a lot TCPDUMP to compare with cyradm :-)

Any chances to see this small part of me into the official python
release ?

"""IMAP4 Client

Extend default python imaplib to include ANNOTATION as described in
http://www.potaroo.net/ietf/all-ids/...atemore-00.txt

This extention is used by cyrus imap, for exemple to manage
automatique
removale of expired mail based on '/vendor/cmu/cyrus-imapd/expir'
annotation
"""

"""
Some usage
>>i.getannotation('user/al***********@asxnet.loc', '"*"', '"value.shared"')
i.getannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '"value.shared"')
('OK', ['"user/al***********@asxnet.loc" "/vendor/cmu/cyrus-imapd/
expire" ("value.shared" "44")'])
>>i.getannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("value.shared")')
('OK', ['"user/al***********@asxnet.loc" "/vendor/cmu/cyrus-imapd/
expire" ("value.shared" "44")'])
>>i.getannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("*")')
('OK', ['"user/al***********@asxnet.loc" "/vendor/cmu/cyrus-imapd/
expire" ("value.shared" "44" "content-type.shared" "text/plain"
"size.shared" "2" "modifiedsince.shared" "1156264470")'])
>>i.getannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("value.shared" "content-type.shared")')
('OK', ['"user/al***********@asxnet.loc" "/vendor/cmu/cyrus-imapd/
expire" ("value.shared" "44" "content-type.shared" "text/plain")'])
>>i.setannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("value.shared" "44")')
('OK', [None])
>>i.setannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("value.shared" NIL)')
('OK', [None])
>>i.getannotation('user/al***********@asxnet.loc', '/vendor/cmu/cyrus-imapd/expire', '("value.shared")')
('OK', [None])

some more
>>i=cyrusimap.CYRUSIMAP4('localhost')
i.login('manager', 'password')
('OK', ['User logged in'])
>>i.getcyrusexpire("user/al***********@asxnet.loc")
('OK', 0)
>>i.setcyrusexpire("user/al***********@asxnet.loc", 88)
('OK', [None])
>>i.getcyrusexpire("user/al***********@asxnet.loc")
('OK', 88)
>>i.setcyrusexpire("user/al***********@asxnet.loc", None)
('OK', [None])
>>i.getcyrusexpire("user/al***********@asxnet.loc")
('OK', 0)
"""
import imaplib

imaplib.Commands.update(
{
'GETANNOTATION': ('AUTH', 'SELECTED'),
'SETANNOTATION': ('AUTH', 'SELECTED'),
})

class CYRUSIMAP4(imaplib.IMAP4):

def getannotation(self, root, entry, attrib):
"""Get annotation

(typ, [data]) = <instance>.getannotation(self, root, entry,
attrib)
"""
typ, dat = self._simple_command('GETANNOTATION', root, entry,
attrib)
return self._untagged_response(typ, dat, 'ANNOTATION')

def setannotation(self, root, entry, value):
"""Set annotation value.

(typ, [data]) = <instance>.setannotation(root, limits)
"""
typ, dat = self._simple_command('SETANNOTATION', root, entry,
value)
return self._untagged_response(typ, dat, 'ANNOTATION')

def getcyrusexpire(self, root):
"""Get cyrus 'expire' annotation value.

(typ, [data]) = <instance>.getcyrusexpire(root)
"""

typ, dat=self.getannotation(root, '/vendor/cmu/cyrus-imapd/
expire', '("value.shared")')
if typ!='OK':
return typ, dat

if dat[0]==None:
return typ, 0

# ['"user/al***********@asxnet.loc" "/vendor/cmu/cyrus-imapd/
expire" ("value.shared" "44")'])
v=int(dat[0].split(None,2)[2].strip('()').split(None,1)
[1].strip('"'))
return typ, v

def setcyrusexpire(self, root, value):
"""Get cyrus 'expire' annotation value.

(typ, [data]) = <instance>.setcyrusexpire(root, value)
"""
if value==None or value==0:
v='NIL'
else:
v='"%d"' % (value,)

return self.setannotation(root, '/vendor/cmu/cyrus-imapd/
expire', '("value.shared" %s)'%(v,))

Feb 1 '07 #1
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