def request(self, method, uri, headers=None, data=None):
#print(method, uri)
now = time.gmtime(time.time())
datetime = time.strftime("%Y%m%dT%H%M%SZ", now)
date = time.strftime("%Y%m%d", now)
if headers is None:
headers = []
headers[:0] = [
("Host", self.host),
("Date", datetime),
("x-amz-glacier-version", "2012-06-01"),
]
if data is not None:
headers.append(("Content-Length", str(len(data))))
headers.append(("x-amz-content-sha256", hashlib.sha256(data).hexdigest()))
headers.append(("x-amz-sha256-tree-hash", sha256tree.treehash(data).hexdigest()))
canonical_request, signed_headers = make_canonical_request(method, uri, headers, data=data)
string_to_sign = make_string_to_sign(datetime, date, "us-east-1", "glacier", canonical_request)
#print(repr(canonical_request))
#print(repr(string_to_sign))
headers.append(("Authorization", make_authorization_header(self.access, self.secret, date, "us-east-1", "glacier", signed_headers, string_to_sign)))
req = urllib.request.Request("https://{}/{}".format(self.host, uri), headers=dict(headers))
req.get_method = lambda: method
try:
r = urllib.request.urlopen(req, data)
except urllib.error.HTTPError as x:
r = x.read().decode("UTF-8")
e = json.loads(r)
raise GlacierError(x.code, e["code"], e["message"], e["type"]) from x
return r
def test_treehash():
for x in [0, 1, 1000, 1048575, 1048576, 1048577, 6815744, 10485760, 9999999]:
data = open("/dev/urandom", "rb").read(x)
assert len(data) == x
sh = sha256tree.treehash_simple(data).digest()
fh = sha256tree.treehash(data).digest()
assert fh == sh, x
th = sha256tree.TreeHash()
while data:
part = data[:random.randrange(2*1048576+1)]
th.update(part)
data = data[len(part):]
ph = th.finish().digest()
assert ph == sh, x