def parse_ns_headers(ns_headers):
"""Ad-hoc parser for Netscape protocol cookie-attributes.
The old Netscape cookie format for Set-Cookie can for instance contain
an unquoted "," in the expires field, so we have to use this ad-hoc
parser instead of split_header_words.
XXX This may not make the best possible effort to parse all the crap
that Netscape Cookie headers contain. Ronald Tschalar's HTTPClient
parser is probably better, so could do worse than following that if
this ever gives any trouble.
Currently, this is also used for parsing RFC 2109 cookies.
"""
known_attrs = (
"expires",
"domain",
"path",
"secure",
# RFC 2109 attrs (may turn up in Netscape cookies, too)
"port",
"max-age")
result = []
for ns_header in ns_headers:
pairs = []
version_set = False
params = re.split(r";\s*", ns_header)
for ii in range(len(params)):
param = params[ii]
param = string.rstrip(param)
if param == "": continue
if "=" not in param:
k, v = param, None
else:
k, v = re.split(r"\s*=\s*", param, 1)
k = string.lstrip(k)
if ii != 0:
lc = string.lower(k)
if lc in known_attrs:
k = lc
if k == "version":
# This is an RFC 2109 cookie.
version_set = True
if k == "expires":
# convert expires date to seconds since epoch
if startswith(v, '"'): v = v[1:]
if endswith(v, '"'): v = v[:-1]
v = http2time(v) # None if invalid
pairs.append((k, v))
if pairs:
if not version_set:
pairs.append(("version", "0"))
result.append(pairs)
return result
def parse_ns_headers(ns_headers):
"""Ad-hoc parser for Netscape protocol cookie-attributes.
The old Netscape cookie format for Set-Cookie can for instance contain
an unquoted "," in the expires field, so we have to use this ad-hoc
parser instead of split_header_words.
XXX This may not make the best possible effort to parse all the crap
that Netscape Cookie headers contain. Ronald Tschalar's HTTPClient
parser is probably better, so could do worse than following that if
this ever gives any trouble.
Currently, this is also used for parsing RFC 2109 cookies.
"""
known_attrs = ("expires", "domain", "path", "secure",
# RFC 2109 attrs (may turn up in Netscape cookies, too)
"port", "max-age")
result = []
for ns_header in ns_headers:
pairs = []
version_set = False
for param in re.split(r";\s*", ns_header):
param = string.rstrip(param)
if param == "": continue
if "=" not in param:
if string.lower(param) in known_attrs:
k, v = param, None
else:
# cookie with missing name
k, v = None, param
else:
k, v = re.split(r"\s*=\s*", param, 1)
k = string.lstrip(k)
if k is not None:
lc = string.lower(k)
if lc in known_attrs:
k = lc
if k == "version":
# This is an RFC 2109 cookie. Will be treated as RFC 2965
# cookie in rest of code.
# Probably it should be parsed with split_header_words, but
# that's too much hassle.
version_set = True
if k == "expires":
# convert expires date to seconds since epoch
if startswith(v, '"'): v = v[1:]
if endswith(v, '"'): v = v[:-1]
v = http2time(v) # None if invalid
pairs.append((k, v))
if pairs:
if not version_set:
pairs.append(("version", "0"))
result.append(pairs)
return result
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 endswith(line, "\n"): line = line[:-1]
# skip comments and blank lines XXX what is $ for?
if (startswith(string.strip(line), "#")
or startswith(string.strip(line), "$")
or string.strip(line) == ""):
continue
domain, domain_specified, path, secure, expires, name, value = \
string.split(line, "\t")
secure = (secure == "TRUE")
domain_specified = (domain_specified == "TRUE")
if name == "":
name = value
value = None
initial_dot = startswith(domain, ".")
assert domain_specified == initial_dot
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, ))
raise LoadError("invalid Netscape format file %s: %s" %
(filename, line))
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 endswith(line, "\n"): line = line[:-1]
# skip comments and blank lines XXX what is $ for?
if (startswith(string.strip(line), "#") or
startswith(string.strip(line), "$") or
string.strip(line) == ""):
continue
domain, domain_specified, path, secure, expires, name, value = \
string.split(line, "\t")
secure = (secure == "TRUE")
domain_specified = (domain_specified == "TRUE")
if name == "":
name = value
value = None
initial_dot = startswith(domain, ".")
assert domain_specified == initial_dot
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,))
raise LoadError("invalid Netscape format file %s: %s" %
(filename, line))
