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test_parser.py
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import httptools
import unittest
from unittest import mock
RESPONSE1_HEAD = b'''HTTP/1.1 200 OK
Date: Mon, 23 May 2005 22:38:34 GMT
Server: Apache/1.3.3.7 (Unix) (Red-Hat/Linux)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
ETag: "3f80f-1b6-3e1cb03b"
Content-Type: text/html; charset=UTF-8
Content-Length: 130
Accept-Ranges: bytes
Connection: close
'''.replace(b'\n', b'\r\n')
RESPONSE1_SPACES_IN_HEAD = b'''HTTP/1.1 200 OK
Date: Mon, 23 May 2005 22:38:34 GMT
Server: Apache/1.3.3.7
(Unix) (Red-Hat/Linux)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
ETag: "3f80f-1b6-3e1cb03b"
Content-Type: text/html;
charset=UTF-8
Content-Length: 130
Accept-Ranges: bytes
Connection: close
'''.replace(b'\n', b'\r\n')
RESPONSE1_BODY = b'''
<html>
<head>
<title>An Example Page</title>
</head>
<body>
Hello World, this is a very simple HTML document.
</body>
</html>'''
CHUNKED_REQUEST1_1 = b'''POST /test.php?a=b+c HTTP/1.1\r
User-Agent: Fooo\r
Host: bar\r
Transfer-Encoding: chunked\r
\r
5\r\nhello\r\n6\r\n world\r\n'''
CHUNKED_REQUEST1_2 = b'''0\r\nVary: *\r\nUser-Agent: spam\r\n\r\n'''
CHUNKED_REQUEST1_3 = b'''POST /test.php?a=b+c HTTP/1.1\r
User-Agent: Fooo\r
Host: bar\r
Transfer-Encoding: chunked\r
\r
b\r\n+\xce\xcfM\xb5MI,I\x04\x00\r\n0\r\n\r\n'''
UPGRADE_REQUEST1 = b'''GET /demo HTTP/1.1\r
Host: example.com\r
Connection: Upgrade\r
Sec-WebSocket-Key2: 12998 5 Y3 1 .P00\r
Sec-WebSocket-Protocol: sample\r
Upgrade: WebSocket\r
Sec-WebSocket-Key1: 4 @1 46546xW%0l 1 5\r
Origin: http://example.com\r
\r
Hot diggity dogg'''
UPGRADE_RESPONSE1 = b'''HTTP/1.1 101 Switching Protocols
UPGRADE: websocket
SEC-WEBSOCKET-ACCEPT: rVg+XakFNFOxk3ZH0lzrZBmg0aU=
TRANSFER-ENCODING: chunked
CONNECTION: upgrade
DATE: Sat, 07 May 2016 23:44:32 GMT
SERVER: Python/3.4 aiohttp/1.0.3
data'''.replace(b'\n', b'\r\n')
class TestResponseParser(unittest.TestCase):
def test_parser_response_1(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpResponseParser(m)
p.feed_data(memoryview(RESPONSE1_HEAD))
self.assertEqual(p.get_http_version(), '1.1')
self.assertEqual(p.get_status_code(), 200)
m.on_status.assert_called_once_with(b'OK')
m.on_headers_complete.assert_called_once_with()
self.assertEqual(m.on_header.call_count, 8)
self.assertEqual(len(headers), 8)
self.assertEqual(headers.get(b'Connection'), b'close')
self.assertEqual(headers.get(b'Content-Type'),
b'text/html; charset=UTF-8')
self.assertFalse(m.on_body.called)
p.feed_data(bytearray(RESPONSE1_BODY))
m.on_body.assert_called_once_with(RESPONSE1_BODY)
m.on_message_complete.assert_called_once_with()
self.assertFalse(m.on_url.called)
self.assertFalse(m.on_chunk_header.called)
self.assertFalse(m.on_chunk_complete.called)
def test_parser_response_1b(self):
p = httptools.HttpResponseParser(None)
with self.assertRaisesRegex(
httptools.HttpParserError,
'Expected HTTP/'):
p.feed_data(b'12123123')
def test_parser_response_leninent_headers_1(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpResponseParser(m)
with self.assertRaisesRegex(
httptools.HttpParserError,
"whitespace after header value",
):
p.feed_data(memoryview(RESPONSE1_SPACES_IN_HEAD))
def test_parser_response_leninent_headers_2(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpResponseParser(m)
p.set_dangerous_leniencies(lenient_headers=True)
p.feed_data(memoryview(RESPONSE1_SPACES_IN_HEAD))
self.assertEqual(p.get_http_version(), '1.1')
self.assertEqual(p.get_status_code(), 200)
m.on_status.assert_called_once_with(b'OK')
m.on_headers_complete.assert_called_once_with()
self.assertEqual(m.on_header.call_count, 8)
self.assertEqual(len(headers), 8)
self.assertEqual(headers.get(b'Connection'), b'close')
self.assertEqual(headers.get(b'Content-Type'),
b'text/html; charset=UTF-8')
self.assertFalse(m.on_body.called)
p.feed_data(bytearray(RESPONSE1_BODY))
m.on_body.assert_called_once_with(RESPONSE1_BODY)
m.on_message_complete.assert_called_once_with()
self.assertFalse(m.on_url.called)
self.assertFalse(m.on_chunk_header.called)
self.assertFalse(m.on_chunk_complete.called)
def test_parser_response_2(self):
with self.assertRaisesRegex(TypeError, 'a bytes-like object'):
httptools.HttpResponseParser(None).feed_data('')
def test_parser_response_3(self):
callbacks = {'on_header', 'on_headers_complete', 'on_body',
'on_message_complete'}
for cbname in callbacks:
with self.subTest('{} callback fails correctly'.format(cbname)):
with self.assertRaisesRegex(httptools.HttpParserCallbackError,
'callback error'):
m = mock.Mock()
getattr(m, cbname).side_effect = Exception()
p = httptools.HttpResponseParser(m)
p.feed_data(RESPONSE1_HEAD + RESPONSE1_BODY)
def test_parser_response_4(self):
p = httptools.HttpResponseParser(None)
with self.assertRaises(httptools.HttpParserInvalidStatusError):
p.feed_data(b'HTTP/1.1 1299 FOOSPAM\r\n')
def test_parser_response_5(self):
m = mock.Mock()
m.on_status = None
m.on_header = None
m.on_body = None
m.on_headers_complete = None
m.on_chunk_header = None
m.on_chunk_complete = None
p = httptools.HttpResponseParser(m)
p.feed_data(RESPONSE1_HEAD)
p.feed_data(RESPONSE1_BODY)
m.on_message_complete.assert_called_once_with()
def test_parser_response_cb_on_status_1(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_status.side_effect = Error()
p = httptools.HttpResponseParser(m)
try:
p.feed_data(RESPONSE1_HEAD + RESPONSE1_BODY)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_response_cb_on_body_1(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_body.side_effect = Error()
p = httptools.HttpResponseParser(m)
try:
p.feed_data(RESPONSE1_HEAD + RESPONSE1_BODY)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_response_cb_on_message_complete_1(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_message_complete.side_effect = Error()
p = httptools.HttpResponseParser(m)
try:
p.feed_data(RESPONSE1_HEAD + RESPONSE1_BODY)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_upgrade_response_1(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpResponseParser(m)
try:
p.feed_data(UPGRADE_RESPONSE1)
except httptools.HttpParserUpgrade as ex:
offset = ex.args[0]
else:
self.fail('HttpParserUpgrade was not raised')
self.assertEqual(UPGRADE_RESPONSE1[offset:], b'data')
self.assertEqual(p.get_http_version(), '1.1')
self.assertEqual(p.get_status_code(), 101)
m.on_status.assert_called_once_with(b'Switching Protocols')
m.on_headers_complete.assert_called_once_with()
self.assertEqual(m.on_header.call_count, 6)
self.assertEqual(len(headers), 6)
m.on_message_complete.assert_called_once_with()
class TestRequestParser(unittest.TestCase):
def test_parser_request_chunked_1(self):
m = mock.Mock()
p = httptools.HttpRequestParser(m)
p.feed_data(CHUNKED_REQUEST1_1)
self.assertEqual(p.get_method(), b'POST')
m.on_message_begin.assert_called_once_with()
m.on_url.assert_called_once_with(b'/test.php?a=b+c')
self.assertEqual(p.get_http_version(), '1.1')
m.on_header.assert_called_with(b'Transfer-Encoding', b'chunked')
m.on_chunk_header.assert_called_with()
m.on_chunk_complete.assert_called_with()
self.assertFalse(m.on_message_complete.called)
m.on_message_begin.assert_called_once_with()
m.reset_mock()
p.feed_data(CHUNKED_REQUEST1_2)
m.on_chunk_header.assert_called_with()
m.on_chunk_complete.assert_called_with()
m.on_header.assert_called_with(b'User-Agent', b'spam')
self.assertEqual(m.on_header.call_count, 2)
self.assertFalse(m.on_message_begin.called)
m.on_message_complete.assert_called_once_with()
def test_parser_request_chunked_2(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
m.on_url = None
m.on_body = None
m.on_headers_complete = None
m.on_chunk_header = None
m.on_chunk_complete = None
p = httptools.HttpRequestParser(m)
p.feed_data(CHUNKED_REQUEST1_1)
p.feed_data(CHUNKED_REQUEST1_2)
self.assertEqual(
headers,
{b'User-Agent': b'spam',
b'Transfer-Encoding': b'chunked',
b'Host': b'bar',
b'Vary': b'*'})
def test_parser_request_chunked_cb_error_1(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_chunk_header.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(CHUNKED_REQUEST1_1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_chunked_cb_error_2(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_chunk_complete.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(CHUNKED_REQUEST1_1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_chunked_3(self):
m = mock.Mock()
p = httptools.HttpRequestParser(m)
p.feed_data(CHUNKED_REQUEST1_3)
self.assertEqual(p.get_method(), b'POST')
m.on_url.assert_called_once_with(b'/test.php?a=b+c')
self.assertEqual(p.get_http_version(), '1.1')
m.on_header.assert_called_with(b'Transfer-Encoding', b'chunked')
m.on_chunk_header.assert_called_with()
m.on_chunk_complete.assert_called_with()
self.assertTrue(m.on_message_complete.called)
def test_parser_request_upgrade_1(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpRequestParser(m)
try:
p.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserUpgrade as ex:
offset = ex.args[0]
else:
self.fail('HttpParserUpgrade was not raised')
self.assertEqual(UPGRADE_REQUEST1[offset:], b'Hot diggity dogg')
self.assertEqual(headers, {
b'Sec-WebSocket-Key2': b'12998 5 Y3 1 .P00',
b'Sec-WebSocket-Key1': b'4 @1 46546xW%0l 1 5',
b'Connection': b'Upgrade',
b'Origin': b'http://example.com',
b'Sec-WebSocket-Protocol': b'sample',
b'Host': b'example.com',
b'Upgrade': b'WebSocket'})
# The parser can be used again for further parsing - this is a legacy
# behavior from the time we were still using http-parser.
p.feed_data(CHUNKED_REQUEST1_1)
self.assertEqual(p.get_method(), b'POST')
def test_parser_request_upgrade_flag(self):
class Protocol:
def __init__(self):
self.parser = httptools.HttpRequestParser(self)
def on_url(self, url):
assert self.parser.should_upgrade() is False
def on_headers_complete(self):
assert self.parser.should_upgrade() is True
def on_message_complete(self):
assert self.parser.should_upgrade() is True
protocol = Protocol()
try:
protocol.parser.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserUpgrade:
# Raise as usual.
pass
else:
self.fail('HttpParserUpgrade was not raised')
def test_parser_request_error_in_on_header(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_header.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_error_in_on_message_begin(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_message_begin.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_error_in_cb_on_url(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_url.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_error_in_cb_on_headers_complete(self):
class Error(Exception):
pass
m = mock.Mock()
m.on_headers_complete.side_effect = Error()
p = httptools.HttpRequestParser(m)
try:
p.feed_data(UPGRADE_REQUEST1)
except httptools.HttpParserCallbackError as ex:
self.assertIsInstance(ex.__context__, Error)
else:
self.fail('HttpParserCallbackError was not raised')
def test_parser_request_2(self):
p = httptools.HttpRequestParser(None)
with self.assertRaises(httptools.HttpParserInvalidMethodError):
p.feed_data(b'SPAM /test.php?a=b+c HTTP/1.1')
def test_parser_request_3(self):
p = httptools.HttpRequestParser(None)
with self.assertRaises(httptools.HttpParserInvalidURLError):
p.feed_data(b'POST HTTP/1.1')
def test_parser_request_4(self):
p = httptools.HttpRequestParser(None)
with self.assertRaisesRegex(TypeError, 'a bytes-like object'):
p.feed_data('POST HTTP/1.1')
def test_parser_request_fragmented(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpRequestParser(m)
REQUEST = (
b'PUT / HTTP/1.1\r\nHost: localhost:1234\r\nContent-Type: text/pl',
b'ain; charset=utf-8\r\nX-Empty-Header: \r\nConnection: close\r\n',
b'Content-Length: 10\r\n\r\n1234567890',
)
p.feed_data(REQUEST[0])
m.on_message_begin.assert_called_once_with()
m.on_url.assert_called_once_with(b'/')
self.assertEqual(headers, {b'Host': b'localhost:1234'})
p.feed_data(REQUEST[1])
self.assertEqual(
headers,
{b'Host': b'localhost:1234',
b'Content-Type': b'text/plain; charset=utf-8',
b'X-Empty-Header': b''})
p.feed_data(REQUEST[2])
self.assertEqual(
headers,
{b'Host': b'localhost:1234',
b'Content-Type': b'text/plain; charset=utf-8',
b'X-Empty-Header': b'',
b'Connection': b'close',
b'Content-Length': b'10'})
m.on_message_complete.assert_called_once_with()
def test_parser_request_fragmented_header(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpRequestParser(m)
REQUEST = (
b'PUT / HTTP/1.1\r\nHost: localhost:1234\r\nContent-',
b'Type: text/plain; charset=utf-8\r\n\r\n',
)
p.feed_data(REQUEST[0])
m.on_message_begin.assert_called_once_with()
m.on_url.assert_called_once_with(b'/')
self.assertEqual(headers, {b'Host': b'localhost:1234'})
p.feed_data(REQUEST[1])
self.assertEqual(
headers,
{b'Host': b'localhost:1234',
b'Content-Type': b'text/plain; charset=utf-8'})
def test_parser_request_fragmented_value(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpRequestParser(m)
REQUEST = (
b'PUT / HTTP/1.1\r\nHost: localhost:1234\r\nContent-Type:',
b' text/pla',
b'in; chars',
b'et=utf-8\r\n\r\n',
)
p.feed_data(REQUEST[0])
m.on_message_begin.assert_called_once_with()
m.on_url.assert_called_once_with(b'/')
self.assertEqual(headers, {b'Host': b'localhost:1234'})
p.feed_data(REQUEST[1])
p.feed_data(REQUEST[2])
p.feed_data(REQUEST[3])
self.assertEqual(
headers,
{b'Host': b'localhost:1234',
b'Content-Type': b'text/plain; charset=utf-8'})
def test_parser_request_fragmented_bytes(self):
m = mock.Mock()
headers = {}
m.on_header.side_effect = headers.__setitem__
p = httptools.HttpRequestParser(m)
REQUEST = \
b'PUT / HTTP/1.1\r\nHost: localhost:1234\r\nContent-' \
b'Type: text/plain; charset=utf-8\r\n\r\n'
step = 1
for i in range(0, len(REQUEST), step):
p.feed_data(REQUEST[i:i+step])
self.assertEqual(
headers,
{b'Host': b'localhost:1234',
b'Content-Type': b'text/plain; charset=utf-8'})
class TestUrlParser(unittest.TestCase):
def parse(self, url:bytes):
parsed = httptools.parse_url(url)
return (parsed.schema, parsed.host, parsed.port, parsed.path,
parsed.query, parsed.fragment, parsed.userinfo)
def test_parser_url_1(self):
self.assertEqual(
self.parse(b'dsf://aaa/b/c?aa#123'),
(b'dsf', b'aaa', None, b'/b/c', b'aa', b'123', None))
self.assertEqual(
self.parse(b'dsf://i:n@aaa:88/b/c?aa#123'),
(b'dsf', b'aaa', 88, b'/b/c', b'aa', b'123', b'i:n'))
self.assertEqual(
self.parse(b'////'),
(None, None, None, b'////', None, None, None))
self.assertEqual(
self.parse(b'////1/1?a=b&c[]=d&c[]=z'),
(None, None, None, b'////1/1', b'a=b&c[]=d&c[]=z', None, None))
self.assertEqual(
self.parse(b'/////?#123'),
(None, None, None, b'/////', None, b'123', None))
self.assertEqual(
self.parse(b'/a/b/c?b=1&'),
(None, None, None, b'/a/b/c', b'b=1&', None, None))
def test_parser_url_2(self):
with self.assertRaises(httptools.HttpParserInvalidURLError):
self.parse(b'')
def test_parser_url_3(self):
with self.assertRaises(httptools.HttpParserInvalidURLError):
self.parse(b' ')
def test_parser_url_4(self):
with self.assertRaises(httptools.HttpParserInvalidURLError):
self.parse(b':///1')
def test_parser_url_5(self):
self.assertEqual(
self.parse(b'http://[1:2::3:4]:67/'),
(b'http', b'1:2::3:4', 67, b'/', None, None, None))
def test_parser_url_6(self):
self.assertEqual(
self.parse(bytearray(b'/')),
(None, None, None, b'/', None, None, None))
def test_parser_url_7(self):
url = httptools.parse_url(b'/')
with self.assertRaisesRegex(AttributeError, 'not writable'):
url.port = 0
def test_parser_url_8(self):
with self.assertRaises(TypeError):
httptools.parse_url(None)
def test_parser_url_9(self):
with self.assertRaisesRegex(httptools.HttpParserInvalidURLError,
r'a\\x00aa'):
self.parse(b'dsf://a\x00aa')
def test_parser_url_10(self):
with self.assertRaisesRegex(TypeError, 'a bytes-like object'):
self.parse('dsf://aaa')