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import json
from cookies.resources.helpers import setNoCacheAndCORSHeaders
from wptserve.utils import isomorphic_decode
from wptserve.utils import isomorphic_encode
def set_cookie(headers, cookie_string, drop=False):
"""Helper method to add a Set-Cookie header"""
if drop:
cookie_string = cookie_string.encode('utf-8') + b'; max-age=0'
headers.append((b'Set-Cookie', isomorphic_encode(cookie_string)))
def main(request, response):
"""Set or drop a cookie via GET params.
Usage: `/cookie.py?set={cookie}` or `/cookie.py?drop={cookie}`
The passed-in cookie string should be stringified via JSON.stringify() (in
the case of multiple cookie headers sent in an array) and encoded via
encodeURIComponent, otherwise `parse_qsl` will split on any semicolons
(used by the Request.GET property getter). Note that values returned by
Request.GET will decode any percent-encoded sequences sent in a GET param
(which may or may not be surprising depending on what you're doing).
Note: here we don't use Response.delete_cookie() or similar other methods
in this resources directory because there are edge cases that are impossible
to express via those APIs, namely a bare (`Path`) or empty Path (`Path=`)
attribute. Instead, we pipe through the entire cookie and append `max-age=0`
to it.
"""
headers = setNoCacheAndCORSHeaders(request, response)
if b'drop' in request.GET:
cookie = request.GET[b'drop']
cookie = json.loads(cookie)
cookies = cookie if isinstance(cookie, list) else [cookie]
for c in cookies:
set_cookie(headers, c, drop=True)
if b'set' in request.GET:
cookie = isomorphic_decode(request.GET[b'set'])
cookie = json.loads(cookie)
cookies = cookie if isinstance(cookie, list) else [cookie]
for c in cookies:
set_cookie(headers, c)
if b'location' in request.GET:
headers.append((b'Location', request.GET[b'location']))
return 302, headers, b'{"redirect": true}'
return headers, b'{"success": true}'
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