def create_signature(self, container, path, resource="b", permissions="r", start="", expiry="", identifier=""):
canonicalized_name = "/" + self._account + "/" + container + "/" + path
data_to_sign = [permissions, start, expiry, canonicalized_name, identifier]
string_to_sign = NEW_LINE.join(data_to_sign)
return base64.encodestring(
hmac.new(self._key, unicode(string_to_sign).encode("utf-8"), hashlib.sha256).digest()
).strip()
def _sign_request_impl(self, request, for_tables=False, use_path_style_uris=None):
(scheme, host, path, query, fragment) = urlsplit(request.get_full_url())
if use_path_style_uris:
path = path[path.index("/") :]
if use_path_style_uris is None:
use_path_style_uris = re.match("^[\d.:]+$", host) is not None
# RFC 1123
request.add_header("x-ms-date", get_azure_time())
canonicalized_headers = NEW_LINE.join(
(
"%s:%s" % (k.lower(), request.get_header(k).strip())
for k in sorted(request.headers.keys(), lambda x, y: cmp(x.lower(), y.lower()))
if k.lower().startswith("x-ms-")
)
)
# verb
string_to_sign = request.get_method().upper() + NEW_LINE
for field in ["Content-encoding", "Content-language", "Content-length", "Content-MD5", "Content-type"]:
if request.has_header(field):
string_to_sign += request.get_header(field)
string_to_sign += NEW_LINE
# Date
if for_tables:
string_to_sign += request.get_header("x-ms-date") + NEW_LINE
else:
string_to_sign += NEW_LINE
for field in ["If-modified-since", "If-match", "If-none-match", "If-unmodified-since", "Range"]:
if request.get_header(field) is not None:
string_to_sign += request.get_header(field)
string_to_sign += NEW_LINE
# Canonicalized headers
if not for_tables:
string_to_sign += canonicalized_headers + NEW_LINE
# Canonicalized resource
string_to_sign += "/" + self._account + path
for key, value in parse_qs(query).iteritems():
string_to_sign += NEW_LINE
string_to_sign += key + ":" + value[0]
request.add_header(
"Authorization",
"SharedKey "
+ self._account
+ ":"
+ base64.encodestring(
hmac.new(self._key, unicode(string_to_sign).encode("utf-8"), hashlib.sha256).digest()
).strip(),
)
return request
