async def feedback(request):
if not APP_EMAIL:
raise errors.HttpProcessingError(code=500, message="Invalid configuration.")
data = await request.post()
recaptchaResponse = data['recaptchaResponse']
async with ClientSession() as session:
async with session.post("https://www.google.com/recaptcha/api/siteverify", data={
'secret': RECAPTCHA_SECRET_KEY,
'response': recaptchaResponse
}) as response:
if response.status != 200:
raise RecaptchaError()
response = await response.read()
response = ujson.loads(response)
if not response['success']:
raise RecaptchaError()
if data['email'] and EMAIL_REGEXP.match(data['email']):
sender = data['email']
else:
sender = "*****@*****.**"
message = "Subject: Kana app feedback from {name}\n\nname: {name}\nemail: {email}\nmessage: {message}".format(
name=data['name'],
email=data['email'],
message=data['message']
)
smtp = aiosmtplib.SMTP(hostname=SMTP_HOST, port=SMTP_PORT, loop=asyncio.get_event_loop())
await smtp.connect()
await smtp.sendmail(sender, [APP_EMAIL], message)
await smtp.close()
return web.Response(text="Ok", content_type='text/plain')
def test_http_error_exception():
exc = errors.HttpProcessingError(code=500, message='Internal error')
assert exc.code == 500
assert exc.message == 'Internal error'
def do_handshake(method, headers, transport, protocols=()):
"""Prepare WebSocket handshake. It return http response code,
response headers, websocket parser, websocket writer. It does not
perform any IO.
`protocols` is a sequence of known protocols. On successful handshake,
the returned response headers contain the first protocol in this list
which the server also knows."""
# WebSocket accepts only GET
if method.upper() != 'GET':
raise errors.HttpProcessingError(code=405,
headers=(('Allow', 'GET'), ))
if 'websocket' != headers.get('UPGRADE', '').lower().strip():
raise errors.HttpBadRequest(message='No WebSocket UPGRADE hdr: {}\n'
'Can "Upgrade" only to "WebSocket".'.
format(headers.get('UPGRADE')))
if 'upgrade' not in headers.get('CONNECTION', '').lower():
raise errors.HttpBadRequest(
message='No CONNECTION upgrade hdr: {}'.format(
headers.get('CONNECTION')))
# find common sub-protocol between client and server
protocol = None
if 'SEC-WEBSOCKET-PROTOCOL' in headers:
req_protocols = [
str(proto.strip())
for proto in headers['SEC-WEBSOCKET-PROTOCOL'].split(',')
]
for proto in req_protocols:
if proto in protocols:
protocol = proto
break
else:
# No overlap found: Return no protocol as per spec
ws_logger.warning(
'Client protocols %r don’t overlap server-known ones %r',
protocols, req_protocols)
# check supported version
version = headers.get('SEC-WEBSOCKET-VERSION')
if version not in ('13', '8', '7'):
raise errors.HttpBadRequest(
message='Unsupported version: {}'.format(version),
headers=(('Sec-WebSocket-Version', '13', '8', '7'), ))
# check client handshake for validity
key = headers.get('SEC-WEBSOCKET-KEY')
try:
if not key or len(base64.b64decode(key)) != 16:
raise errors.HttpBadRequest(
message='Handshake error: {!r}'.format(key))
except binascii.Error:
raise errors.HttpBadRequest(
message='Handshake error: {!r}'.format(key)) from None
response_headers = [
('UPGRADE', 'websocket'), ('CONNECTION', 'upgrade'),
('TRANSFER-ENCODING', 'chunked'),
('SEC-WEBSOCKET-ACCEPT',
base64.b64encode(hashlib.sha1(key.encode() +
WS_KEY).digest()).decode())
]
if protocol:
response_headers.append(('SEC-WEBSOCKET-PROTOCOL', protocol))
# response code, headers, parser, writer, protocol
return (101, response_headers, WebSocketParser, WebSocketWriter(transport),
protocol)
def do_handshake(method,
headers,
transport,
protocols=(),
write_buffer_size=DEFAULT_LIMIT):
"""Prepare WebSocket handshake.
It return HTTP response code, response headers, websocket parser,
websocket writer. It does not perform any IO.
`protocols` is a sequence of known protocols. On successful handshake,
the returned response headers contain the first protocol in this list
which the server also knows.
`write_buffer_size` max size of write buffer before `drain()` get called.
"""
# WebSocket accepts only GET
if method.upper() != hdrs.METH_GET:
raise errors.HttpProcessingError(code=405,
headers=((hdrs.ALLOW,
hdrs.METH_GET), ))
if 'websocket' != headers.get(hdrs.UPGRADE, '').lower().strip():
raise errors.HttpBadRequest(
message='No WebSocket UPGRADE hdr: {}\n Can '
'"Upgrade" only to "WebSocket".'.format(headers.get(hdrs.UPGRADE)))
if 'upgrade' not in headers.get(hdrs.CONNECTION, '').lower():
raise errors.HttpBadRequest(
message='No CONNECTION upgrade hdr: {}'.format(
headers.get(hdrs.CONNECTION)))
# find common sub-protocol between client and server
protocol = None
if hdrs.SEC_WEBSOCKET_PROTOCOL in headers:
req_protocols = [
str(proto.strip())
for proto in headers[hdrs.SEC_WEBSOCKET_PROTOCOL].split(',')
]
for proto in req_protocols:
if proto in protocols:
protocol = proto
break
else:
# No overlap found: Return no protocol as per spec
ws_logger.warning(
'Client protocols %r don’t overlap server-known ones %r',
req_protocols, protocols)
# check supported version
version = headers.get(hdrs.SEC_WEBSOCKET_VERSION, '')
if version not in ('13', '8', '7'):
raise errors.HttpBadRequest(
message='Unsupported version: {}'.format(version),
headers=((hdrs.SEC_WEBSOCKET_VERSION, '13'), ))
# check client handshake for validity
key = headers.get(hdrs.SEC_WEBSOCKET_KEY)
try:
if not key or len(base64.b64decode(key)) != 16:
raise errors.HttpBadRequest(
message='Handshake error: {!r}'.format(key))
except binascii.Error:
raise errors.HttpBadRequest(
message='Handshake error: {!r}'.format(key)) from None
response_headers = [
(hdrs.UPGRADE, 'websocket'), (hdrs.CONNECTION, 'upgrade'),
(hdrs.TRANSFER_ENCODING, 'chunked'),
(hdrs.SEC_WEBSOCKET_ACCEPT,
base64.b64encode(hashlib.sha1(key.encode() +
WS_KEY).digest()).decode())
]
if protocol:
response_headers.append((hdrs.SEC_WEBSOCKET_PROTOCOL, protocol))
# response code, headers, parser, writer, protocol
return (101, response_headers, WebSocketParser,
WebSocketWriter(transport, limit=write_buffer_size), protocol)
def test_http_error_exception(self):
exc = errors.HttpProcessingError(code=500, message='Internal error')
self.assertEqual(exc.code, 500)
self.assertEqual(exc.message, 'Internal error')
