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)
"version",
"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 = param.rstrip()
if param == "": continue
if "=" not in param:
k, v = param, None
else:
k, v = re.split(r"\s*=\s*", param, 1)
k = k.lstrip()
if ii != 0:
lc = k.lower()
if lc in known_attrs:
k = lc
if k == "version":
# This is an RFC 2109 cookie.
v = strip_quotes(v)
version_set = True
if k == "expires":
# convert expires date to seconds since epoch
v = http2time(strip_quotes(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
params = re.split(r";\s*", ns_header)
for ii in range(len(params)):
param = params[ii]
param = param.rstrip()
if param == "": continue
if "=" not in param:
k, v = param, None
else:
k, v = re.split(r"\s*=\s*", param, 1)
k = k.lstrip()
if ii != 0:
lc = k.lower()
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 v.startswith('"'): v = v[1:]
if v.endswith('"'): 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
