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""" Basic cookie manager
forwards cookies to all other instances connected to the event manager"""
from collections import defaultdict
import os, re, stat
# these are symbolic names for the components of the cookie tuple
symbolic = {'domain': 0, 'path':1, 'name':2, 'value':3, 'scheme':4, 'expires':5}
# allows for partial cookies
# ? allow wildcard in key
def match(key, cookie):
for k,c in zip(key,cookie):
if k != c:
return False
return True
class NullStore(object):
def add_cookie(self, rawcookie, cookie):
pass
def delete_cookie(self, rkey, key):
pass
class ListStore(list):
def add_cookie(self, rawcookie, cookie):
self.append(rawcookie)
def delete_cookie(self, rkey, key):
self[:] = [x for x in self if not match(key, splitquoted(x))]
class TextStore(object):
def __init__(self, filename):
self.filename = filename
try:
# make sure existing cookie jar is not world-open
perm_mode = os.stat(self.filename).st_mode
if (perm_mode & (stat.S_IRWXO | stat.S_IRWXG)) > 0:
safe_perm = stat.S_IMODE(perm_mode) & ~(stat.S_IRWXO | stat.S_IRWXG)
os.chmod(self.filename, safe_perm)
except OSError:
pass
def as_event(self, cookie):
"""Convert cookie.txt row to uzbls cookie event format"""
scheme = {
'TRUE' : 'https',
'FALSE' : 'http'
}
extra = ''
if cookie[0].startswith("#HttpOnly_"):
extra = 'Only'
domain = cookie[0][len("#HttpOnly_"):]
elif cookie[0].startswith('#'):
return None
else:
domain = cookie[0]
try:
return (domain,
cookie[2],
cookie[5],
cookie[6],
scheme[cookie[3]] + extra,
cookie[4])
except (KeyError,IndexError):
# Let malformed rows pass through like comments
return None
def as_file(self, cookie):
"""Convert cookie event to cookie.txt row"""
secure = {
'https' : 'TRUE',
'http' : 'FALSE',
'httpsOnly' : 'TRUE',
'httpOnly' : 'FALSE'
}
http_only = {
'https' : '',
'http' : '',
'httpsOnly' : '#HttpOnly_',
'httpOnly' : '#HttpOnly_'
}
return (http_only[cookie[4]] + cookie[0],
'TRUE' if cookie[0].startswith('.') else 'FALSE',
cookie[1],
secure[cookie[4]],
cookie[5],
cookie[2],
cookie[3])
def add_cookie(self, rawcookie, cookie):
assert len(cookie) == 6
# delete equal cookies (ignoring expire time, value and secure flag)
self.delete_cookie(None, cookie[:-3])
# restrict umask before creating the cookie jar
curmask=os.umask(0)
os.umask(curmask| stat.S_IRWXO | stat.S_IRWXG)
first = not os.path.exists(self.filename)
with open(self.filename, 'a') as f:
if first:
print >> f, "# HTTP Cookie File"
print >> f, '\t'.join(self.as_file(cookie))
os.umask(curmask)
def delete_cookie(self, rkey, key):
if not os.path.exists(self.filename):
return
# restrict umask before creating the cookie jar
curmask=os.umask(0)
os.umask(curmask | stat.S_IRWXO | stat.S_IRWXG)
# read all cookies
with open(self.filename, 'r') as f:
cookies = f.readlines()
# write those that don't match the cookie to delete
with open(self.filename, 'w') as f:
for l in cookies:
c = self.as_event(l.split('\t'))
if c is None or not match(key, c):
print >> f, l,
os.umask(curmask)
xdg_data_home = os.environ.get('XDG_DATA_HOME', os.path.join(os.environ['HOME'], '.local/share'))
DefaultStore = TextStore(os.path.join(xdg_data_home, 'uzbl/cookies.txt'))
SessionStore = TextStore(os.path.join(xdg_data_home, 'uzbl/session-cookies.txt'))
def match_list(_list, cookie):
for matcher in _list:
for component, match in matcher:
if match(cookie[component]) is None:
break
else:
return True
return False
# accept a cookie only when:
# a. there is no whitelist and the cookie is in the blacklist
# b. the cookie is in the whitelist and not in the blacklist
def accept_cookie(uzbl, cookie):
if uzbl.cookie_whitelist:
if match_list(uzbl.cookie_whitelist, cookie):
return not match_list(uzbl.cookie_blacklist, cookie)
return False
return not match_list(uzbl.cookie_blacklist, cookie)
def expires_with_session(uzbl, cookie):
return cookie[5] == ''
def get_recipents(uzbl):
""" get a list of Uzbl instances to send the cookie too. """
# This could be a lot more interesting
return [u for u in uzbl.parent.uzbls.values() if u is not uzbl]
def get_store(uzbl, session=False):
if session:
return SessionStore
return DefaultStore
def add_cookie(uzbl, cookie):
splitted = splitquoted(cookie)
if accept_cookie(uzbl, splitted):
for u in get_recipents(uzbl):
u.send('add_cookie %s' % cookie)
get_store(uzbl, expires_with_session(uzbl, splitted)).add_cookie(cookie, splitted)
else:
logger.debug('cookie %r is blacklisted' % splitted)
uzbl.send('delete_cookie %s' % cookie)
def delete_cookie(uzbl, cookie):
for u in get_recipents(uzbl):
u.send('delete_cookie %s' % cookie)
splitted = splitquoted(cookie)
if len(splitted) == 6:
get_store(uzbl, expires_with_session(uzbl, splitted)).delete_cookie(cookie, splitted)
else:
for store in set([get_store(uzbl, session) for session in (True, False)]):
store.delete_cookie(cookie, splitted)
# add a cookie matcher to a whitelist or a blacklist.
# a matcher is a list of (component, re) tuples that matches a cookie when the
# "component" part of the cookie matches the regular expression "re".
# "component" is one of the keys defined in the variable "symbolic" above,
# or the index of a component of a cookie tuple.
def add_cookie_matcher(_list, arg):
args = splitquoted(arg)
mlist = []
for (component, regexp) in zip(args[0::2], args[1::2]):
try:
component = symbolic[component]
except KeyError:
component = int(component)
assert component <= 5
mlist.append((component, re.compile(regexp).search))
_list.append(mlist)
def blacklist(uzbl, arg):
add_cookie_matcher(uzbl.cookie_blacklist, arg)
def whitelist(uzbl, arg):
add_cookie_matcher(uzbl.cookie_whitelist, arg)
def init(uzbl):
connect_dict(uzbl, {
'ADD_COOKIE': add_cookie,
'DELETE_COOKIE': delete_cookie,
'BLACKLIST_COOKIE': blacklist,
'WHITELIST_COOKIE': whitelist
})
export_dict(uzbl, {
'cookie_blacklist' : [],
'cookie_whitelist' : []
})
# vi: set et ts=4:
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