/usr/lib/python2.7/_LWPCookieJar.py is in libpython2.7-stdlib 2.7.6-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | """Load / save to libwww-perl (LWP) format files.
Actually, the format is slightly extended from that used by LWP's
(libwww-perl's) HTTP::Cookies, to avoid losing some RFC 2965 information
not recorded by LWP.
It uses the version string "2.0", though really there isn't an LWP Cookies
2.0 format. This indicates that there is extra information in here
(domain_dot and # port_spec) while still being compatible with
libwww-perl, I hope.
"""
import time, re
from cookielib import (_warn_unhandled_exception, FileCookieJar, LoadError,
Cookie, MISSING_FILENAME_TEXT,
join_header_words, split_header_words,
iso2time, time2isoz)
def lwp_cookie_str(cookie):
"""Return string representation of Cookie in an the LWP cookie file format.
Actually, the format is extended a bit -- see module docstring.
"""
h = [(cookie.name, cookie.value),
("path", cookie.path),
("domain", cookie.domain)]
if cookie.port is not None: h.append(("port", cookie.port))
if cookie.path_specified: h.append(("path_spec", None))
if cookie.port_specified: h.append(("port_spec", None))
if cookie.domain_initial_dot: h.append(("domain_dot", None))
if cookie.secure: h.append(("secure", None))
if cookie.expires: h.append(("expires",
time2isoz(float(cookie.expires))))
if cookie.discard: h.append(("discard", None))
if cookie.comment: h.append(("comment", cookie.comment))
if cookie.comment_url: h.append(("commenturl", cookie.comment_url))
keys = cookie._rest.keys()
keys.sort()
for k in keys:
h.append((k, str(cookie._rest[k])))
h.append(("version", str(cookie.version)))
return join_header_words([h])
class LWPCookieJar(FileCookieJar):
"""
The LWPCookieJar saves a sequence of "Set-Cookie3" lines.
"Set-Cookie3" is the format used by the libwww-perl libary, not known
to be compatible with any browser, but which is easy to read and
doesn't lose information about RFC 2965 cookies.
Additional methods
as_lwp_str(ignore_discard=True, ignore_expired=True)
"""
def as_lwp_str(self, ignore_discard=True, ignore_expires=True):
"""Return cookies as a string of "\\n"-separated "Set-Cookie3" headers.
ignore_discard and ignore_expires: see docstring for FileCookieJar.save
"""
now = time.time()
r = []
for cookie in self:
if not ignore_discard and cookie.discard:
continue
if not ignore_expires and cookie.is_expired(now):
continue
r.append("Set-Cookie3: %s" % lwp_cookie_str(cookie))
return "\n".join(r+[""])
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:
# There really isn't an LWP Cookies 2.0 format, but this indicates
# that there is extra information in here (domain_dot and
# port_spec) while still being compatible with libwww-perl, I hope.
f.write("#LWP-Cookies-2.0\n")
f.write(self.as_lwp_str(ignore_discard, ignore_expires))
finally:
f.close()
def _really_load(self, f, filename, ignore_discard, ignore_expires):
magic = f.readline()
if not re.search(self.magic_re, magic):
msg = ("%r does not look like a Set-Cookie3 (LWP) format "
"file" % filename)
raise LoadError(msg)
now = time.time()
header = "Set-Cookie3:"
boolean_attrs = ("port_spec", "path_spec", "domain_dot",
"secure", "discard")
value_attrs = ("version",
"port", "path", "domain",
"expires",
"comment", "commenturl")
try:
while 1:
line = f.readline()
if line == "": break
if not line.startswith(header):
continue
line = line[len(header):].strip()
for data in split_header_words([line]):
name, value = data[0]
standard = {}
rest = {}
for k in boolean_attrs:
standard[k] = False
for k, v in data[1:]:
if k is not None:
lc = k.lower()
else:
lc = None
# don't lose case distinction for unknown fields
if (lc in value_attrs) or (lc in boolean_attrs):
k = lc
if k in boolean_attrs:
if v is None: v = True
standard[k] = v
elif k in value_attrs:
standard[k] = v
else:
rest[k] = v
h = standard.get
expires = h("expires")
discard = h("discard")
if expires is not None:
expires = iso2time(expires)
if expires is None:
discard = True
domain = h("domain")
domain_specified = domain.startswith(".")
c = Cookie(h("version"), name, value,
h("port"), h("port_spec"),
domain, domain_specified, h("domain_dot"),
h("path"), h("path_spec"),
h("secure"),
expires,
discard,
h("comment"),
h("commenturl"),
rest)
if not ignore_discard and c.discard:
continue
if not ignore_expires and c.is_expired(now):
continue
self.set_cookie(c)
except IOError:
raise
except Exception:
_warn_unhandled_exception()
raise LoadError("invalid Set-Cookie3 format file %r: %r" %
(filename, line))
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