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"""Mozilla / Netscape cookie loading / saving.
Copyright 2002-2006 John J Lee <jjl@pobox.com>
Copyright 1997-1999 Gisle Aas (original libwww-perl code)
This code is free software; you can redistribute it and/or modify it
under the terms of the BSD or ZPL 2.1 licenses (see the file
COPYING.txt included with the distribution).
"""
import re, time, logging
from _clientcookie import reraise_unmasked_exceptions, FileCookieJar, Cookie, \
MISSING_FILENAME_TEXT, LoadError
debug = logging.getLogger("ClientCookie").debug
class MozillaCookieJar(FileCookieJar):
"""
WARNING: you may want to backup your browser's cookies file if you use
this class to save cookies. I *think* it works, but there have been
bugs in the past!
This class differs from CookieJar only in the format it uses to save and
load cookies to and from a file. This class uses the Mozilla/Netscape
`cookies.txt' format. lynx uses this file format, too.
Don't expect cookies saved while the browser is running to be noticed by
the browser (in fact, Mozilla on unix will overwrite your saved cookies if
you change them on disk while it's running; on Windows, you probably can't
save at all while the browser is running).
Note that the Mozilla/Netscape format will downgrade RFC2965 cookies to
Netscape cookies on saving.
In particular, the cookie version and port number information is lost,
together with information about whether or not Path, Port and Discard were
specified by the Set-Cookie2 (or Set-Cookie) header, and whether or not the
domain as set in the HTTP header started with a dot (yes, I'm aware some
domains in Netscape files start with a dot and some don't -- trust me, you
really don't want to know any more about this).
Note that though Mozilla and Netscape use the same format, they use
slightly different headers. The class saves cookies using the Netscape
header by default (Mozilla can cope with that).
"""
magic_re = "#( Netscape)? HTTP Cookie File"
header = """\
# Netscape HTTP Cookie File
# http://www.netscape.com/newsref/std/cookie_spec.html
# This is a generated file! Do not edit.
"""
def _really_load(self, f, filename, ignore_discard, ignore_expires):
now = time.time()
magic = f.readline()
if not re.search(self.magic_re, magic):
f.close()
raise LoadError(
"%s does not look like a Netscape format cookies file" %
filename)
try:
while 1:
line = f.readline()
if line == "": break
# last field may be absent, so keep any trailing tab
if line.endswith("\n"): line = line[:-1]
# skip comments and blank lines XXX what is $ for?
if (line.strip().startswith("#") or
line.strip().startswith("$") or
line.strip() == ""):
continue
domain, domain_specified, path, secure, expires, name, value = \
line.split("\t", 6)
secure = (secure == "TRUE")
domain_specified = (domain_specified == "TRUE")
if name == "":
name = value
value = None
initial_dot = domain.startswith(".")
if domain_specified != initial_dot:
raise LoadError("domain and domain specified flag don't "
"match in %s: %s" % (filename, line))
discard = False
if expires == "":
expires = None
discard = True
# assume path_specified is false
c = Cookie(0, name, value,
None, False,
domain, domain_specified, initial_dot,
path, False,
secure,
expires,
discard,
None,
None,
{})
if not ignore_discard and c.discard:
continue
if not ignore_expires and c.is_expired(now):
continue
self.set_cookie(c)
except:
reraise_unmasked_exceptions((IOError, LoadError))
raise LoadError("invalid Netscape format file %s: %s" %
(filename, line))
def save(self, filename=None, ignore_discard=False, ignore_expires=False):
if filename is None:
if self.filename is not None: filename = self.filename
else: raise ValueError(MISSING_FILENAME_TEXT)
f = open(filename, "w")
try:
debug("Saving Netscape cookies.txt file")
f.write(self.header)
now = time.time()
for cookie in self:
if not ignore_discard and cookie.discard:
debug(" Not saving %s: marked for discard", cookie.name)
continue
if not ignore_expires and cookie.is_expired(now):
debug(" Not saving %s: expired", cookie.name)
continue
if cookie.secure: secure = "TRUE"
else: secure = "FALSE"
if cookie.domain.startswith("."): initial_dot = "TRUE"
else: initial_dot = "FALSE"
if cookie.expires is not None:
expires = str(cookie.expires)
else:
expires = ""
if cookie.value is None:
# cookies.txt regards 'Set-Cookie: foo' as a cookie
# with no name, whereas cookielib regards it as a
# cookie with no value.
name = ""
value = cookie.name
else:
name = cookie.name
value = cookie.value
f.write(
"\t".join([cookie.domain, initial_dot, cookie.path,
secure, expires, name, value])+
"\n")
finally:
f.close()
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