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bazarr/libs/waitress/tests/test_parser.py

453 lines
15 KiB

##############################################################################
#
# Copyright (c) 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""HTTP Request Parser tests
"""
import unittest
from waitress.compat import (
text_,
tobytes,
)
class TestHTTPRequestParser(unittest.TestCase):
def setUp(self):
from waitress.parser import HTTPRequestParser
from waitress.adjustments import Adjustments
my_adj = Adjustments()
self.parser = HTTPRequestParser(my_adj)
def test_get_body_stream_None(self):
self.parser.body_recv = None
result = self.parser.get_body_stream()
self.assertEqual(result.getvalue(), b'')
def test_get_body_stream_nonNone(self):
body_rcv = DummyBodyStream()
self.parser.body_rcv = body_rcv
result = self.parser.get_body_stream()
self.assertEqual(result, body_rcv)
def test_received_nonsense_with_double_cr(self):
data = b"""\
HTTP/1.0 GET /foobar
"""
result = self.parser.received(data)
self.assertEqual(result, 22)
self.assertTrue(self.parser.completed)
self.assertEqual(self.parser.headers, {})
def test_received_bad_host_header(self):
from waitress.utilities import BadRequest
data = b"""\
HTTP/1.0 GET /foobar
Host: foo
"""
result = self.parser.received(data)
self.assertEqual(result, 33)
self.assertTrue(self.parser.completed)
self.assertEqual(self.parser.error.__class__, BadRequest)
def test_received_nonsense_nothing(self):
data = b"""\
"""
result = self.parser.received(data)
self.assertEqual(result, 2)
self.assertTrue(self.parser.completed)
self.assertEqual(self.parser.headers, {})
def test_received_no_doublecr(self):
data = b"""\
GET /foobar HTTP/8.4
"""
result = self.parser.received(data)
self.assertEqual(result, 21)
self.assertFalse(self.parser.completed)
self.assertEqual(self.parser.headers, {})
def test_received_already_completed(self):
self.parser.completed = True
result = self.parser.received(b'a')
self.assertEqual(result, 0)
def test_received_cl_too_large(self):
from waitress.utilities import RequestEntityTooLarge
self.parser.adj.max_request_body_size = 2
data = b"""\
GET /foobar HTTP/8.4
Content-Length: 10
"""
result = self.parser.received(data)
self.assertEqual(result, 41)
self.assertTrue(self.parser.completed)
self.assertTrue(isinstance(self.parser.error, RequestEntityTooLarge))
def test_received_headers_too_large(self):
from waitress.utilities import RequestHeaderFieldsTooLarge
self.parser.adj.max_request_header_size = 2
data = b"""\
GET /foobar HTTP/8.4
X-Foo: 1
"""
result = self.parser.received(data)
self.assertEqual(result, 30)
self.assertTrue(self.parser.completed)
self.assertTrue(isinstance(self.parser.error,
RequestHeaderFieldsTooLarge))
def test_received_body_too_large(self):
from waitress.utilities import RequestEntityTooLarge
self.parser.adj.max_request_body_size = 2
data = b"""\
GET /foobar HTTP/1.1
Transfer-Encoding: chunked
X-Foo: 1
20;\r\n
This string has 32 characters\r\n
0\r\n\r\n"""
result = self.parser.received(data)
self.assertEqual(result, 58)
self.parser.received(data[result:])
self.assertTrue(self.parser.completed)
self.assertTrue(isinstance(self.parser.error,
RequestEntityTooLarge))
def test_received_error_from_parser(self):
from waitress.utilities import BadRequest
data = b"""\
GET /foobar HTTP/1.1
Transfer-Encoding: chunked
X-Foo: 1
garbage
"""
# header
result = self.parser.received(data)
# body
result = self.parser.received(data[result:])
self.assertEqual(result, 8)
self.assertTrue(self.parser.completed)
self.assertTrue(isinstance(self.parser.error,
BadRequest))
def test_received_chunked_completed_sets_content_length(self):
data = b"""\
GET /foobar HTTP/1.1
Transfer-Encoding: chunked
X-Foo: 1
20;\r\n
This string has 32 characters\r\n
0\r\n\r\n"""
result = self.parser.received(data)
self.assertEqual(result, 58)
data = data[result:]
result = self.parser.received(data)
self.assertTrue(self.parser.completed)
self.assertTrue(self.parser.error is None)
self.assertEqual(self.parser.headers['CONTENT_LENGTH'], '32')
def test_parse_header_gardenpath(self):
data = b"""\
GET /foobar HTTP/8.4
foo: bar"""
self.parser.parse_header(data)
self.assertEqual(self.parser.first_line, b'GET /foobar HTTP/8.4')
self.assertEqual(self.parser.headers['FOO'], 'bar')
def test_parse_header_no_cr_in_headerplus(self):
data = b"GET /foobar HTTP/8.4"
self.parser.parse_header(data)
self.assertEqual(self.parser.first_line, data)
def test_parse_header_bad_content_length(self):
data = b"GET /foobar HTTP/8.4\ncontent-length: abc"
self.parser.parse_header(data)
self.assertEqual(self.parser.body_rcv, None)
def test_parse_header_11_te_chunked(self):
# NB: test that capitalization of header value is unimportant
data = b"GET /foobar HTTP/1.1\ntransfer-encoding: ChUnKed"
self.parser.parse_header(data)
self.assertEqual(self.parser.body_rcv.__class__.__name__,
'ChunkedReceiver')
def test_parse_header_11_expect_continue(self):
data = b"GET /foobar HTTP/1.1\nexpect: 100-continue"
self.parser.parse_header(data)
self.assertEqual(self.parser.expect_continue, True)
def test_parse_header_connection_close(self):
data = b"GET /foobar HTTP/1.1\nConnection: close\n\n"
self.parser.parse_header(data)
self.assertEqual(self.parser.connection_close, True)
def test_close_with_body_rcv(self):
body_rcv = DummyBodyStream()
self.parser.body_rcv = body_rcv
self.parser.close()
self.assertTrue(body_rcv.closed)
def test_close_with_no_body_rcv(self):
self.parser.body_rcv = None
self.parser.close() # doesn't raise
class Test_split_uri(unittest.TestCase):
def _callFUT(self, uri):
from waitress.parser import split_uri
(self.proxy_scheme,
self.proxy_netloc,
self.path,
self.query, self.fragment) = split_uri(uri)
def test_split_uri_unquoting_unneeded(self):
self._callFUT(b'http://localhost:8080/abc def')
self.assertEqual(self.path, '/abc def')
def test_split_uri_unquoting_needed(self):
self._callFUT(b'http://localhost:8080/abc%20def')
self.assertEqual(self.path, '/abc def')
def test_split_url_with_query(self):
self._callFUT(b'http://localhost:8080/abc?a=1&b=2')
self.assertEqual(self.path, '/abc')
self.assertEqual(self.query, 'a=1&b=2')
def test_split_url_with_query_empty(self):
self._callFUT(b'http://localhost:8080/abc?')
self.assertEqual(self.path, '/abc')
self.assertEqual(self.query, '')
def test_split_url_with_fragment(self):
self._callFUT(b'http://localhost:8080/#foo')
self.assertEqual(self.path, '/')
self.assertEqual(self.fragment, 'foo')
def test_split_url_https(self):
self._callFUT(b'https://localhost:8080/')
self.assertEqual(self.path, '/')
self.assertEqual(self.proxy_scheme, 'https')
self.assertEqual(self.proxy_netloc, 'localhost:8080')
def test_split_uri_unicode_error_raises_parsing_error(self):
# See https://github.com/Pylons/waitress/issues/64
from waitress.parser import ParsingError
# Either pass or throw a ParsingError, just don't throw another type of
# exception as that will cause the connection to close badly:
try:
self._callFUT(b'/\xd0')
except ParsingError:
pass
class Test_get_header_lines(unittest.TestCase):
def _callFUT(self, data):
from waitress.parser import get_header_lines
return get_header_lines(data)
def test_get_header_lines(self):
result = self._callFUT(b'slam\nslim')
self.assertEqual(result, [b'slam', b'slim'])
def test_get_header_lines_folded(self):
# From RFC2616:
# HTTP/1.1 header field values can be folded onto multiple lines if the
# continuation line begins with a space or horizontal tab. All linear
# white space, including folding, has the same semantics as SP. A
# recipient MAY replace any linear white space with a single SP before
# interpreting the field value or forwarding the message downstream.
# We are just preserving the whitespace that indicates folding.
result = self._callFUT(b'slim\n slam')
self.assertEqual(result, [b'slim slam'])
def test_get_header_lines_tabbed(self):
result = self._callFUT(b'slam\n\tslim')
self.assertEqual(result, [b'slam\tslim'])
def test_get_header_lines_malformed(self):
# http://corte.si/posts/code/pathod/pythonservers/index.html
from waitress.parser import ParsingError
self.assertRaises(ParsingError,
self._callFUT, b' Host: localhost\r\n\r\n')
class Test_crack_first_line(unittest.TestCase):
def _callFUT(self, line):
from waitress.parser import crack_first_line
return crack_first_line(line)
def test_crack_first_line_matchok(self):
result = self._callFUT(b'GET / HTTP/1.0')
self.assertEqual(result, (b'GET', b'/', b'1.0'))
def test_crack_first_line_lowercase_method(self):
from waitress.parser import ParsingError
self.assertRaises(ParsingError, self._callFUT, b'get / HTTP/1.0')
def test_crack_first_line_nomatch(self):
result = self._callFUT(b'GET / bleh')
self.assertEqual(result, (b'', b'', b''))
def test_crack_first_line_missing_version(self):
result = self._callFUT(b'GET /')
self.assertEqual(result, (b'GET', b'/', None))
class TestHTTPRequestParserIntegration(unittest.TestCase):
def setUp(self):
from waitress.parser import HTTPRequestParser
from waitress.adjustments import Adjustments
my_adj = Adjustments()
self.parser = HTTPRequestParser(my_adj)
def feed(self, data):
parser = self.parser
for n in range(100): # make sure we never loop forever
consumed = parser.received(data)
data = data[consumed:]
if parser.completed:
return
raise ValueError('Looping') # pragma: no cover
def testSimpleGET(self):
data = b"""\
GET /foobar HTTP/8.4
FirstName: mickey
lastname: Mouse
content-length: 7
Hello.
"""
parser = self.parser
self.feed(data)
self.assertTrue(parser.completed)
self.assertEqual(parser.version, '8.4')
self.assertFalse(parser.empty)
self.assertEqual(parser.headers,
{'FIRSTNAME': 'mickey',
'LASTNAME': 'Mouse',
'CONTENT_LENGTH': '7',
})
self.assertEqual(parser.path, '/foobar')
self.assertEqual(parser.command, 'GET')
self.assertEqual(parser.query, '')
self.assertEqual(parser.proxy_scheme, '')
self.assertEqual(parser.proxy_netloc, '')
self.assertEqual(parser.get_body_stream().getvalue(), b'Hello.\n')
def testComplexGET(self):
data = b"""\
GET /foo/a+%2B%2F%C3%A4%3D%26a%3Aint?d=b+%2B%2F%3D%26b%3Aint&c+%2B%2F%3D%26c%3Aint=6 HTTP/8.4
FirstName: mickey
lastname: Mouse
content-length: 10
Hello mickey.
"""
parser = self.parser
self.feed(data)
self.assertEqual(parser.command, 'GET')
self.assertEqual(parser.version, '8.4')
self.assertFalse(parser.empty)
self.assertEqual(parser.headers,
{'FIRSTNAME': 'mickey',
'LASTNAME': 'Mouse',
'CONTENT_LENGTH': '10',
})
# path should be utf-8 encoded
self.assertEqual(tobytes(parser.path).decode('utf-8'),
text_(b'/foo/a++/\xc3\xa4=&a:int', 'utf-8'))
self.assertEqual(parser.query,
'd=b+%2B%2F%3D%26b%3Aint&c+%2B%2F%3D%26c%3Aint=6')
self.assertEqual(parser.get_body_stream().getvalue(), b'Hello mick')
def testProxyGET(self):
data = b"""\
GET https://example.com:8080/foobar HTTP/8.4
content-length: 7
Hello.
"""
parser = self.parser
self.feed(data)
self.assertTrue(parser.completed)
self.assertEqual(parser.version, '8.4')
self.assertFalse(parser.empty)
self.assertEqual(parser.headers,
{'CONTENT_LENGTH': '7',
})
self.assertEqual(parser.path, '/foobar')
self.assertEqual(parser.command, 'GET')
self.assertEqual(parser.proxy_scheme, 'https')
self.assertEqual(parser.proxy_netloc, 'example.com:8080')
self.assertEqual(parser.command, 'GET')
self.assertEqual(parser.query, '')
self.assertEqual(parser.get_body_stream().getvalue(), b'Hello.\n')
def testDuplicateHeaders(self):
# Ensure that headers with the same key get concatenated as per
# RFC2616.
data = b"""\
GET /foobar HTTP/8.4
x-forwarded-for: 10.11.12.13
x-forwarded-for: unknown,127.0.0.1
X-Forwarded_for: 255.255.255.255
content-length: 7
Hello.
"""
self.feed(data)
self.assertTrue(self.parser.completed)
self.assertEqual(self.parser.headers, {
'CONTENT_LENGTH': '7',
'X_FORWARDED_FOR':
'10.11.12.13, unknown,127.0.0.1',
})
def testSpoofedHeadersDropped(self):
data = b"""\
GET /foobar HTTP/8.4
x-auth_user: bob
content-length: 7
Hello.
"""
self.feed(data)
self.assertTrue(self.parser.completed)
self.assertEqual(self.parser.headers, {
'CONTENT_LENGTH': '7',
})
class DummyBodyStream(object):
def getfile(self):
return self
def getbuf(self):
return self
def close(self):
self.closed = True