import hashlib
import json
RETRIEVAL_PATH = '/storage-access-api/resources/retrieve-storage-access-headers.py'
def get_stashable_headers(headers):
def bytes_to_strings(d):
# Recursively convert bytes to strings in `d`.
if isinstance(d, (tuple,list,set)):
return [bytes_to_strings(x) for x in d]
elif isinstance(d, bytes):
return d.decode()
elif isinstance(d, dict):
return {bytes_to_strings(k): bytes_to_strings(v) for (k, v) in d.items()}
return d
return json.dumps(bytes_to_strings(headers))
# Makes a string representation of the hash generated for the given key.
def make_stash_key(key, request_params):
# Redirected requests stash their headers at a different key.
key += b'redirected' if b'redirected' in request_params else b''
return hashlib.md5(key).hexdigest()
# Sets the response to redirect to the location passed by the request if its
# parameters contain a `redirect-location` or a `once-active-redirect-location`
# with an active `storage_access_status`.
def maybe_set_redirect(request_params, response, storage_access_status):
if storage_access_status == b'active':
location = request_params.first(b'once-active-redirect-location', '')
else:
location = request_params.first(b'redirect-location', '')
if location:
response.status = 302
response.headers.set(b'Location', location)
# Returns an HTML body with an embedded responder if one is included in
# `request_params`, otherwise returns an empty byte-string.
def make_response_body(request_params):
script = request_params.first(b'script', None)
if script is None:
return b''
return b"""
Subframe with script
""" % (script)