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Copy pathtest_httpservers.py
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1434 lines (1223 loc) · 56.9 KB
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"""Unittests for the various HTTPServer modules.
Written by Cody A.W. Somerville <cody-somerville@ubuntu.com>,
Josip Dzolonga, and Michael Otteneder for the 2007/08 GHOP contest.
"""
from collections import OrderedDict
from http.server import BaseHTTPRequestHandler, HTTPServer, \
SimpleHTTPRequestHandler, CGIHTTPRequestHandler
from http import server, HTTPStatus
import os
import socket
import sys
import re
import base64
import ntpath
import pathlib
import shutil
import email.message
import email.utils
import html
import http, http.client
import urllib.parse
import tempfile
import time
import datetime
import threading
from unittest import mock
from io import BytesIO, StringIO
import unittest
from test import support
from test.support import (
is_apple, os_helper, requires_subprocess, threading_helper
)
support.requires_working_socket(module=True)
class NoLogRequestHandler:
def log_message(self, *args):
# don't write log messages to stderr
pass
def read(self, n=None):
return ''
class TestServerThread(threading.Thread):
def __init__(self, test_object, request_handler):
threading.Thread.__init__(self)
self.request_handler = request_handler
self.test_object = test_object
def run(self):
self.server = HTTPServer(('localhost', 0), self.request_handler)
self.test_object.HOST, self.test_object.PORT = self.server.socket.getsockname()
self.test_object.server_started.set()
self.test_object = None
try:
self.server.serve_forever(0.05)
finally:
self.server.server_close()
def stop(self):
self.server.shutdown()
self.join()
class BaseTestCase(unittest.TestCase):
def setUp(self):
self._threads = threading_helper.threading_setup()
os.environ = os_helper.EnvironmentVarGuard()
self.server_started = threading.Event()
self.thread = TestServerThread(self, self.request_handler)
self.thread.start()
self.server_started.wait()
def tearDown(self):
self.thread.stop()
self.thread = None
os.environ.__exit__()
threading_helper.threading_cleanup(*self._threads)
def request(self, uri, method='GET', body=None, headers={}):
self.connection = http.client.HTTPConnection(self.HOST, self.PORT)
self.connection.request(method, uri, body, headers)
return self.connection.getresponse()
class BaseHTTPServerTestCase(BaseTestCase):
class request_handler(NoLogRequestHandler, BaseHTTPRequestHandler):
protocol_version = 'HTTP/1.1'
default_request_version = 'HTTP/1.1'
def do_TEST(self):
self.send_response(HTTPStatus.NO_CONTENT)
self.send_header('Content-Type', 'text/html')
self.send_header('Connection', 'close')
self.end_headers()
def do_KEEP(self):
self.send_response(HTTPStatus.NO_CONTENT)
self.send_header('Content-Type', 'text/html')
self.send_header('Connection', 'keep-alive')
self.end_headers()
def do_KEYERROR(self):
self.send_error(999)
def do_NOTFOUND(self):
self.send_error(HTTPStatus.NOT_FOUND)
def do_EXPLAINERROR(self):
self.send_error(999, "Short Message",
"This is a long \n explanation")
def do_CUSTOM(self):
self.send_response(999)
self.send_header('Content-Type', 'text/html')
self.send_header('Connection', 'close')
self.end_headers()
def do_LATINONEHEADER(self):
self.send_response(999)
self.send_header('X-Special', 'Dängerous Mind')
self.send_header('Connection', 'close')
self.end_headers()
body = self.headers['x-special-incoming'].encode('utf-8')
self.wfile.write(body)
def do_SEND_ERROR(self):
self.send_error(int(self.path[1:]))
def do_HEAD(self):
self.send_error(int(self.path[1:]))
def setUp(self):
BaseTestCase.setUp(self)
self.con = http.client.HTTPConnection(self.HOST, self.PORT)
self.con.connect()
def test_command(self):
self.con.request('GET', '/')
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_IMPLEMENTED)
def test_request_line_trimming(self):
self.con._http_vsn_str = 'HTTP/1.1\n'
self.con.putrequest('XYZBOGUS', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_IMPLEMENTED)
def test_version_bogus(self):
self.con._http_vsn_str = 'FUBAR'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_version_digits(self):
self.con._http_vsn_str = 'HTTP/9.9.9'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_version_signs_and_underscores(self):
self.con._http_vsn_str = 'HTTP/-9_9_9.+9_9_9'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_major_version_number_too_long(self):
self.con._http_vsn_str = 'HTTP/909876543210.0'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_minor_version_number_too_long(self):
self.con._http_vsn_str = 'HTTP/1.909876543210'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_version_none_get(self):
self.con._http_vsn_str = ''
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_IMPLEMENTED)
def test_version_none(self):
# Test that a valid method is rejected when not HTTP/1.x
self.con._http_vsn_str = ''
self.con.putrequest('CUSTOM', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_version_invalid(self):
self.con._http_vsn = 99
self.con._http_vsn_str = 'HTTP/9.9'
self.con.putrequest('GET', '/')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.HTTP_VERSION_NOT_SUPPORTED)
def test_send_blank(self):
self.con._http_vsn_str = ''
self.con.putrequest('', '')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.BAD_REQUEST)
def test_header_close(self):
self.con.putrequest('GET', '/')
self.con.putheader('Connection', 'close')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_IMPLEMENTED)
def test_header_keep_alive(self):
self.con._http_vsn_str = 'HTTP/1.1'
self.con.putrequest('GET', '/')
self.con.putheader('Connection', 'keep-alive')
self.con.endheaders()
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_IMPLEMENTED)
def test_handler(self):
self.con.request('TEST', '/')
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NO_CONTENT)
def test_return_header_keep_alive(self):
self.con.request('KEEP', '/')
res = self.con.getresponse()
self.assertEqual(res.getheader('Connection'), 'keep-alive')
self.con.request('TEST', '/')
self.addCleanup(self.con.close)
def test_internal_key_error(self):
self.con.request('KEYERROR', '/')
res = self.con.getresponse()
self.assertEqual(res.status, 999)
def test_return_custom_status(self):
self.con.request('CUSTOM', '/')
res = self.con.getresponse()
self.assertEqual(res.status, 999)
def test_return_explain_error(self):
self.con.request('EXPLAINERROR', '/')
res = self.con.getresponse()
self.assertEqual(res.status, 999)
self.assertTrue(int(res.getheader('Content-Length')))
def test_latin1_header(self):
self.con.request('LATINONEHEADER', '/', headers={
'X-Special-Incoming': 'Ärger mit Unicode'
})
res = self.con.getresponse()
self.assertEqual(res.getheader('X-Special'), 'Dängerous Mind')
self.assertEqual(res.read(), 'Ärger mit Unicode'.encode('utf-8'))
def test_error_content_length(self):
# Issue #16088: standard error responses should have a content-length
self.con.request('NOTFOUND', '/')
res = self.con.getresponse()
self.assertEqual(res.status, HTTPStatus.NOT_FOUND)
data = res.read()
self.assertEqual(int(res.getheader('Content-Length')), len(data))
def test_send_error(self):
allow_transfer_encoding_codes = (HTTPStatus.NOT_MODIFIED,
HTTPStatus.RESET_CONTENT)
for code in (HTTPStatus.NO_CONTENT, HTTPStatus.NOT_MODIFIED,
HTTPStatus.PROCESSING, HTTPStatus.RESET_CONTENT,
HTTPStatus.SWITCHING_PROTOCOLS):
self.con.request('SEND_ERROR', '/{}'.format(code))
res = self.con.getresponse()
self.assertEqual(code, res.status)
self.assertEqual(None, res.getheader('Content-Length'))
self.assertEqual(None, res.getheader('Content-Type'))
if code not in allow_transfer_encoding_codes:
self.assertEqual(None, res.getheader('Transfer-Encoding'))
data = res.read()
self.assertEqual(b'', data)
def test_head_via_send_error(self):
allow_transfer_encoding_codes = (HTTPStatus.NOT_MODIFIED,
HTTPStatus.RESET_CONTENT)
for code in (HTTPStatus.OK, HTTPStatus.NO_CONTENT,
HTTPStatus.NOT_MODIFIED, HTTPStatus.RESET_CONTENT,
HTTPStatus.SWITCHING_PROTOCOLS):
self.con.request('HEAD', '/{}'.format(code))
res = self.con.getresponse()
self.assertEqual(code, res.status)
if code == HTTPStatus.OK:
self.assertTrue(int(res.getheader('Content-Length')) > 0)
self.assertIn('text/html', res.getheader('Content-Type'))
else:
self.assertEqual(None, res.getheader('Content-Length'))
self.assertEqual(None, res.getheader('Content-Type'))
if code not in allow_transfer_encoding_codes:
self.assertEqual(None, res.getheader('Transfer-Encoding'))
data = res.read()
self.assertEqual(b'', data)
class RequestHandlerLoggingTestCase(BaseTestCase):
class request_handler(BaseHTTPRequestHandler):
protocol_version = 'HTTP/1.1'
default_request_version = 'HTTP/1.1'
def do_GET(self):
self.send_response(HTTPStatus.OK)
self.end_headers()
def do_ERROR(self):
self.send_error(HTTPStatus.NOT_FOUND, 'File not found')
def test_get(self):
self.con = http.client.HTTPConnection(self.HOST, self.PORT)
self.con.connect()
with support.captured_stderr() as err:
self.con.request('GET', '/')
self.con.getresponse()
self.assertTrue(
err.getvalue().endswith('"GET / HTTP/1.1" 200 -\n'))
def test_err(self):
self.con = http.client.HTTPConnection(self.HOST, self.PORT)
self.con.connect()
with support.captured_stderr() as err:
self.con.request('ERROR', '/')
self.con.getresponse()
lines = err.getvalue().split('\n')
self.assertTrue(lines[0].endswith('code 404, message File not found'))
self.assertTrue(lines[1].endswith('"ERROR / HTTP/1.1" 404 -'))
class SimpleHTTPServerTestCase(BaseTestCase):
class request_handler(NoLogRequestHandler, SimpleHTTPRequestHandler):
pass
def setUp(self):
super().setUp()
self.cwd = os.getcwd()
basetempdir = tempfile.gettempdir()
os.chdir(basetempdir)
self.data = b'We are the knights who say Ni!'
self.tempdir = tempfile.mkdtemp(dir=basetempdir)
self.tempdir_name = os.path.basename(self.tempdir)
self.base_url = '/' + self.tempdir_name
tempname = os.path.join(self.tempdir, 'test')
with open(tempname, 'wb') as temp:
temp.write(self.data)
temp.flush()
mtime = os.stat(tempname).st_mtime
# compute last modification datetime for browser cache tests
last_modif = datetime.datetime.fromtimestamp(mtime,
datetime.timezone.utc)
self.last_modif_datetime = last_modif.replace(microsecond=0)
self.last_modif_header = email.utils.formatdate(
last_modif.timestamp(), usegmt=True)
def tearDown(self):
try:
os.chdir(self.cwd)
try:
shutil.rmtree(self.tempdir)
except:
pass
finally:
super().tearDown()
def check_status_and_reason(self, response, status, data=None):
def close_conn():
"""Don't close reader yet so we can check if there was leftover
buffered input"""
nonlocal reader
reader = response.fp
response.fp = None
reader = None
response._close_conn = close_conn
body = response.read()
self.assertTrue(response)
self.assertEqual(response.status, status)
self.assertIsNotNone(response.reason)
if data:
self.assertEqual(data, body)
# Ensure the server has not set up a persistent connection, and has
# not sent any extra data
self.assertEqual(response.version, 10)
self.assertEqual(response.msg.get("Connection", "close"), "close")
self.assertEqual(reader.read(30), b'', 'Connection should be closed')
reader.close()
return body
@unittest.skipIf(is_apple,
'undecodable name cannot always be decoded on Apple platforms')
@unittest.skipIf(sys.platform == 'win32',
'undecodable name cannot be decoded on win32')
@unittest.skipUnless(os_helper.TESTFN_UNDECODABLE,
'need os_helper.TESTFN_UNDECODABLE')
def test_undecodable_filename(self):
enc = sys.getfilesystemencoding()
filename = os.fsdecode(os_helper.TESTFN_UNDECODABLE) + '.txt'
with open(os.path.join(self.tempdir, filename), 'wb') as f:
f.write(os_helper.TESTFN_UNDECODABLE)
response = self.request(self.base_url + '/')
if is_apple:
# On Apple platforms the HFS+ filesystem replaces bytes that
# aren't valid UTF-8 into a percent-encoded value.
for name in os.listdir(self.tempdir):
if name != 'test': # Ignore a filename created in setUp().
filename = name
break
body = self.check_status_and_reason(response, HTTPStatus.OK)
quotedname = urllib.parse.quote(filename, errors='surrogatepass')
self.assertIn(('href="%s"' % quotedname)
.encode(enc, 'surrogateescape'), body)
self.assertIn(('>%s<' % html.escape(filename, quote=False))
.encode(enc, 'surrogateescape'), body)
response = self.request(self.base_url + '/' + quotedname)
self.check_status_and_reason(response, HTTPStatus.OK,
data=os_helper.TESTFN_UNDECODABLE)
def test_undecodable_parameter(self):
# sanity check using a valid parameter
response = self.request(self.base_url + '/?x=123').read()
self.assertRegex(response, rf'listing for {self.base_url}/\?x=123'.encode('latin1'))
# now the bogus encoding
response = self.request(self.base_url + '/?x=%bb').read()
self.assertRegex(response, rf'listing for {self.base_url}/\?x=\xef\xbf\xbd'.encode('latin1'))
def test_get_dir_redirect_location_domain_injection_bug(self):
"""Ensure //evil.co/..%2f../../X does not put //evil.co/ in Location.
//netloc/ in a Location header is a redirect to a new host.
https://github.com/python/cpython/issues/87389
This checks that a path resolving to a directory on our server cannot
resolve into a redirect to another server.
"""
os.mkdir(os.path.join(self.tempdir, 'existing_directory'))
url = f'/python.org/..%2f..%2f..%2f..%2f..%2f../%0a%0d/../{self.tempdir_name}/existing_directory'
expected_location = f'{url}/' # /python.org.../ single slash single prefix, trailing slash
# Canonicalizes to /tmp/tempdir_name/existing_directory which does
# exist and is a dir, triggering the 301 redirect logic.
response = self.request(url)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
location = response.getheader('Location')
self.assertEqual(location, expected_location, msg='non-attack failed!')
# //python.org... multi-slash prefix, no trailing slash
attack_url = f'/{url}'
response = self.request(attack_url)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
location = response.getheader('Location')
self.assertFalse(location.startswith('//'), msg=location)
self.assertEqual(location, expected_location,
msg='Expected Location header to start with a single / and '
'end with a / as this is a directory redirect.')
# ///python.org... triple-slash prefix, no trailing slash
attack3_url = f'//{url}'
response = self.request(attack3_url)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
self.assertEqual(response.getheader('Location'), expected_location)
# If the second word in the http request (Request-URI for the http
# method) has a scheme and netloc, it still gets treated as an
# absolute path by the server. In that case, the redirect is
# constructed so it is parsed as a path. The './' part of the path
# is added by urlunsplit() so that the 'https:' part of what is being
# treated as a path is not treated as a scheme in the redirect
# location. http.server is not a proxy and doesn't handle Request-URI
# being an absolute URI with a scheme and or netloc.
attack_scheme_netloc_2slash_url = f'https://pypi.org/{url}'
expected_location = f'./{attack_scheme_netloc_2slash_url}/'
response = self.request(attack_scheme_netloc_2slash_url)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
location = response.getheader('Location')
self.assertEqual(location, expected_location)
def test_get(self):
#constructs the path relative to the root directory of the HTTPServer
response = self.request(self.base_url + '/test')
self.check_status_and_reason(response, HTTPStatus.OK, data=self.data)
# check for trailing "/" which should return 404. See Issue17324
response = self.request(self.base_url + '/test/')
self.check_status_and_reason(response, HTTPStatus.NOT_FOUND)
response = self.request(self.base_url + '/')
self.check_status_and_reason(response, HTTPStatus.OK)
response = self.request(self.base_url)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
self.assertEqual(response.getheader("Content-Length"), "0")
response = self.request(self.base_url + '/?hi=2')
self.check_status_and_reason(response, HTTPStatus.OK)
response = self.request(self.base_url + '?hi=1')
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
self.assertEqual(response.getheader("Location"),
self.base_url + "/?hi=1")
response = self.request('/ThisDoesNotExist')
self.check_status_and_reason(response, HTTPStatus.NOT_FOUND)
response = self.request('/' + 'ThisDoesNotExist' + '/')
self.check_status_and_reason(response, HTTPStatus.NOT_FOUND)
os.makedirs(os.path.join(self.tempdir, 'spam', 'index.html'))
response = self.request(self.base_url + '/spam/')
self.check_status_and_reason(response, HTTPStatus.OK)
data = b"Dummy index file\r\n"
with open(os.path.join(self.tempdir_name, 'index.html'), 'wb') as f:
f.write(data)
response = self.request(self.base_url + '/')
self.check_status_and_reason(response, HTTPStatus.OK, data)
# chmod() doesn't work as expected on Windows, and filesystem
# permissions are ignored by root on Unix.
if os.name == 'posix' and os.geteuid() != 0:
os.chmod(self.tempdir, 0)
try:
response = self.request(self.base_url + '/')
self.check_status_and_reason(response, HTTPStatus.NOT_FOUND)
finally:
os.chmod(self.tempdir, 0o755)
def test_head(self):
response = self.request(
self.base_url + '/test', method='HEAD')
self.check_status_and_reason(response, HTTPStatus.OK)
self.assertEqual(response.getheader('content-length'),
str(len(self.data)))
self.assertEqual(response.getheader('content-type'),
'application/octet-stream')
def test_browser_cache(self):
"""Check that when a request to /test is sent with the request header
If-Modified-Since set to date of last modification, the server returns
status code 304, not 200
"""
headers = email.message.Message()
headers['If-Modified-Since'] = self.last_modif_header
response = self.request(self.base_url + '/test', headers=headers)
self.check_status_and_reason(response, HTTPStatus.NOT_MODIFIED)
# one hour after last modification : must return 304
new_dt = self.last_modif_datetime + datetime.timedelta(hours=1)
headers = email.message.Message()
headers['If-Modified-Since'] = email.utils.format_datetime(new_dt,
usegmt=True)
response = self.request(self.base_url + '/test', headers=headers)
self.check_status_and_reason(response, HTTPStatus.NOT_MODIFIED)
def test_browser_cache_file_changed(self):
# with If-Modified-Since earlier than Last-Modified, must return 200
dt = self.last_modif_datetime
# build datetime object : 365 days before last modification
old_dt = dt - datetime.timedelta(days=365)
headers = email.message.Message()
headers['If-Modified-Since'] = email.utils.format_datetime(old_dt,
usegmt=True)
response = self.request(self.base_url + '/test', headers=headers)
self.check_status_and_reason(response, HTTPStatus.OK)
def test_browser_cache_with_If_None_Match_header(self):
# if If-None-Match header is present, ignore If-Modified-Since
headers = email.message.Message()
headers['If-Modified-Since'] = self.last_modif_header
headers['If-None-Match'] = "*"
response = self.request(self.base_url + '/test', headers=headers)
self.check_status_and_reason(response, HTTPStatus.OK)
def test_invalid_requests(self):
response = self.request('/', method='FOO')
self.check_status_and_reason(response, HTTPStatus.NOT_IMPLEMENTED)
# requests must be case sensitive,so this should fail too
response = self.request('/', method='custom')
self.check_status_and_reason(response, HTTPStatus.NOT_IMPLEMENTED)
response = self.request('/', method='GETs')
self.check_status_and_reason(response, HTTPStatus.NOT_IMPLEMENTED)
def test_last_modified(self):
"""Checks that the datetime returned in Last-Modified response header
is the actual datetime of last modification, rounded to the second
"""
response = self.request(self.base_url + '/test')
self.check_status_and_reason(response, HTTPStatus.OK, data=self.data)
last_modif_header = response.headers['Last-modified']
self.assertEqual(last_modif_header, self.last_modif_header)
def test_path_without_leading_slash(self):
response = self.request(self.tempdir_name + '/test')
self.check_status_and_reason(response, HTTPStatus.OK, data=self.data)
response = self.request(self.tempdir_name + '/test/')
self.check_status_and_reason(response, HTTPStatus.NOT_FOUND)
response = self.request(self.tempdir_name + '/')
self.check_status_and_reason(response, HTTPStatus.OK)
response = self.request(self.tempdir_name)
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
response = self.request(self.tempdir_name + '/?hi=2')
self.check_status_and_reason(response, HTTPStatus.OK)
response = self.request(self.tempdir_name + '?hi=1')
self.check_status_and_reason(response, HTTPStatus.MOVED_PERMANENTLY)
self.assertEqual(response.getheader("Location"),
self.tempdir_name + "/?hi=1")
def test_html_escape_filename(self):
filename = '<test&>.txt'
fullpath = os.path.join(self.tempdir, filename)
try:
open(fullpath, 'wb').close()
except OSError:
raise unittest.SkipTest('Can not create file %s on current file '
'system' % filename)
try:
response = self.request(self.base_url + '/')
body = self.check_status_and_reason(response, HTTPStatus.OK)
enc = response.headers.get_content_charset()
finally:
os.unlink(fullpath) # avoid affecting test_undecodable_filename
self.assertIsNotNone(enc)
html_text = '>%s<' % html.escape(filename, quote=False)
self.assertIn(html_text.encode(enc), body)
cgi_file1 = """\
#!%s
print("Content-type: text/html")
print()
print("Hello World")
"""
cgi_file2 = """\
#!%s
import os
import sys
import urllib.parse
print("Content-type: text/html")
print()
content_length = int(os.environ["CONTENT_LENGTH"])
query_string = sys.stdin.buffer.read(content_length)
params = {key.decode("utf-8"): val.decode("utf-8")
for key, val in urllib.parse.parse_qsl(query_string)}
print("%%s, %%s, %%s" %% (params["spam"], params["eggs"], params["bacon"]))
"""
cgi_file4 = """\
#!%s
import os
print("Content-type: text/html")
print()
print(os.environ["%s"])
"""
cgi_file6 = """\
#!%s
import os
print("X-ambv: was here")
print("Content-type: text/html")
print()
print("<pre>")
for k, v in os.environ.items():
try:
k.encode('ascii')
v.encode('ascii')
except UnicodeEncodeError:
continue # see: BPO-44647
print(f"{k}={v}")
print("</pre>")
"""
@unittest.skipIf(hasattr(os, 'geteuid') and os.geteuid() == 0,
"This test can't be run reliably as root (issue #13308).")
@requires_subprocess()
class CGIHTTPServerTestCase(BaseTestCase):
class request_handler(NoLogRequestHandler, CGIHTTPRequestHandler):
_test_case_self = None # populated by each setUp() method call.
def __init__(self, *args, **kwargs):
with self._test_case_self.assertWarnsRegex(
DeprecationWarning,
r'http\.server\.CGIHTTPRequestHandler'):
# This context also happens to catch and silence the
# threading DeprecationWarning from os.fork().
super().__init__(*args, **kwargs)
linesep = os.linesep.encode('ascii')
def setUp(self):
self.request_handler._test_case_self = self # practical, but yuck.
BaseTestCase.setUp(self)
self.cwd = os.getcwd()
self.parent_dir = tempfile.mkdtemp()
self.cgi_dir = os.path.join(self.parent_dir, 'cgi-bin')
self.cgi_child_dir = os.path.join(self.cgi_dir, 'child-dir')
self.sub_dir_1 = os.path.join(self.parent_dir, 'sub')
self.sub_dir_2 = os.path.join(self.sub_dir_1, 'dir')
self.cgi_dir_in_sub_dir = os.path.join(self.sub_dir_2, 'cgi-bin')
os.mkdir(self.cgi_dir)
os.mkdir(self.cgi_child_dir)
os.mkdir(self.sub_dir_1)
os.mkdir(self.sub_dir_2)
os.mkdir(self.cgi_dir_in_sub_dir)
self.nocgi_path = None
self.file1_path = None
self.file2_path = None
self.file3_path = None
self.file4_path = None
self.file5_path = None
# The shebang line should be pure ASCII: use symlink if possible.
# See issue #7668.
self._pythonexe_symlink = None
if os_helper.can_symlink():
self.pythonexe = os.path.join(self.parent_dir, 'python')
self._pythonexe_symlink = support.PythonSymlink(self.pythonexe).__enter__()
else:
self.pythonexe = sys.executable
try:
# The python executable path is written as the first line of the
# CGI Python script. The encoding cookie cannot be used, and so the
# path should be encodable to the default script encoding (utf-8)
self.pythonexe.encode('utf-8')
except UnicodeEncodeError:
self.tearDown()
self.skipTest("Python executable path is not encodable to utf-8")
self.nocgi_path = os.path.join(self.parent_dir, 'nocgi.py')
with open(self.nocgi_path, 'w', encoding='utf-8') as fp:
fp.write(cgi_file1 % self.pythonexe)
os.chmod(self.nocgi_path, 0o777)
self.file1_path = os.path.join(self.cgi_dir, 'file1.py')
with open(self.file1_path, 'w', encoding='utf-8') as file1:
file1.write(cgi_file1 % self.pythonexe)
os.chmod(self.file1_path, 0o777)
self.file2_path = os.path.join(self.cgi_dir, 'file2.py')
with open(self.file2_path, 'w', encoding='utf-8') as file2:
file2.write(cgi_file2 % self.pythonexe)
os.chmod(self.file2_path, 0o777)
self.file3_path = os.path.join(self.cgi_child_dir, 'file3.py')
with open(self.file3_path, 'w', encoding='utf-8') as file3:
file3.write(cgi_file1 % self.pythonexe)
os.chmod(self.file3_path, 0o777)
self.file4_path = os.path.join(self.cgi_dir, 'file4.py')
with open(self.file4_path, 'w', encoding='utf-8') as file4:
file4.write(cgi_file4 % (self.pythonexe, 'QUERY_STRING'))
os.chmod(self.file4_path, 0o777)
self.file5_path = os.path.join(self.cgi_dir_in_sub_dir, 'file5.py')
with open(self.file5_path, 'w', encoding='utf-8') as file5:
file5.write(cgi_file1 % self.pythonexe)
os.chmod(self.file5_path, 0o777)
self.file6_path = os.path.join(self.cgi_dir, 'file6.py')
with open(self.file6_path, 'w', encoding='utf-8') as file6:
file6.write(cgi_file6 % self.pythonexe)
os.chmod(self.file6_path, 0o777)
os.chdir(self.parent_dir)
def tearDown(self):
self.request_handler._test_case_self = None
try:
os.chdir(self.cwd)
if self._pythonexe_symlink:
self._pythonexe_symlink.__exit__(None, None, None)
if self.nocgi_path:
os.remove(self.nocgi_path)
if self.file1_path:
os.remove(self.file1_path)
if self.file2_path:
os.remove(self.file2_path)
if self.file3_path:
os.remove(self.file3_path)
if self.file4_path:
os.remove(self.file4_path)
if self.file5_path:
os.remove(self.file5_path)
if self.file6_path:
os.remove(self.file6_path)
os.rmdir(self.cgi_child_dir)
os.rmdir(self.cgi_dir)
os.rmdir(self.cgi_dir_in_sub_dir)
os.rmdir(self.sub_dir_2)
os.rmdir(self.sub_dir_1)
# The 'gmon.out' file can be written in the current working
# directory if C-level code profiling with gprof is enabled.
os_helper.unlink(os.path.join(self.parent_dir, 'gmon.out'))
os.rmdir(self.parent_dir)
finally:
BaseTestCase.tearDown(self)
def test_url_collapse_path(self):
# verify tail is the last portion and head is the rest on proper urls
test_vectors = {
'': '//',
'..': IndexError,
'/.//..': IndexError,
'/': '//',
'//': '//',
'/\\': '//\\',
'/.//': '//',
'cgi-bin/file1.py': '/cgi-bin/file1.py',
'/cgi-bin/file1.py': '/cgi-bin/file1.py',
'a': '//a',
'/a': '//a',
'//a': '//a',
'./a': '//a',
'./C:/': '/C:/',
'/a/b': '/a/b',
'/a/b/': '/a/b/',
'/a/b/.': '/a/b/',
'/a/b/c/..': '/a/b/',
'/a/b/c/../d': '/a/b/d',
'/a/b/c/../d/e/../f': '/a/b/d/f',
'/a/b/c/../d/e/../../f': '/a/b/f',
'/a/b/c/../d/e/.././././..//f': '/a/b/f',
'../a/b/c/../d/e/.././././..//f': IndexError,
'/a/b/c/../d/e/../../../f': '/a/f',
'/a/b/c/../d/e/../../../../f': '//f',
'/a/b/c/../d/e/../../../../../f': IndexError,
'/a/b/c/../d/e/../../../../f/..': '//',
'/a/b/c/../d/e/../../../../f/../.': '//',
}
for path, expected in test_vectors.items():
if isinstance(expected, type) and issubclass(expected, Exception):
self.assertRaises(expected,
server._url_collapse_path, path)
else:
actual = server._url_collapse_path(path)
self.assertEqual(expected, actual,
msg='path = %r\nGot: %r\nWanted: %r' %
(path, actual, expected))
def test_headers_and_content(self):
res = self.request('/cgi-bin/file1.py')
self.assertEqual(
(res.read(), res.getheader('Content-type'), res.status),
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK))
def test_issue19435(self):
res = self.request('///////////nocgi.py/../cgi-bin/nothere.sh')
self.assertEqual(res.status, HTTPStatus.NOT_FOUND)
def test_post(self):
params = urllib.parse.urlencode(
{'spam' : 1, 'eggs' : 'python', 'bacon' : 123456})
headers = {'Content-type' : 'application/x-www-form-urlencoded'}
res = self.request('/cgi-bin/file2.py', 'POST', params, headers)
self.assertEqual(res.read(), b'1, python, 123456' + self.linesep)
def test_invaliduri(self):
res = self.request('/cgi-bin/invalid')
res.read()
self.assertEqual(res.status, HTTPStatus.NOT_FOUND)
def test_authorization(self):
headers = {b'Authorization' : b'Basic ' +
base64.b64encode(b'username:pass')}
res = self.request('/cgi-bin/file1.py', 'GET', headers=headers)
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_no_leading_slash(self):
# http://bugs.python.org/issue2254
res = self.request('cgi-bin/file1.py')
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_os_environ_is_not_altered(self):
signature = "Test CGI Server"
os.environ['SERVER_SOFTWARE'] = signature
res = self.request('/cgi-bin/file1.py')
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
self.assertEqual(os.environ['SERVER_SOFTWARE'], signature)
def test_urlquote_decoding_in_cgi_check(self):
res = self.request('/cgi-bin%2ffile1.py')
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_nested_cgi_path_issue21323(self):
res = self.request('/cgi-bin/child-dir/file3.py')
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_query_with_multiple_question_mark(self):
res = self.request('/cgi-bin/file4.py?a=b?c=d')
self.assertEqual(
(b'a=b?c=d' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_query_with_continuous_slashes(self):
res = self.request('/cgi-bin/file4.py?k=aa%2F%2Fbb&//q//p//=//a//b//')
self.assertEqual(
(b'k=aa%2F%2Fbb&//q//p//=//a//b//' + self.linesep,
'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
def test_cgi_path_in_sub_directories(self):
try:
CGIHTTPRequestHandler.cgi_directories.append('/sub/dir/cgi-bin')
res = self.request('/sub/dir/cgi-bin/file5.py')
self.assertEqual(
(b'Hello World' + self.linesep, 'text/html', HTTPStatus.OK),
(res.read(), res.getheader('Content-type'), res.status))
finally:
CGIHTTPRequestHandler.cgi_directories.remove('/sub/dir/cgi-bin')
def test_accept(self):
browser_accept = \
'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
tests = (
((('Accept', browser_accept),), browser_accept),
((), ''),
# Hack case to get two values for the one header
((('Accept', 'text/html'), ('ACCEPT', 'text/plain')),
'text/html,text/plain'),
)
for headers, expected in tests:
headers = OrderedDict(headers)
with self.subTest(headers):
res = self.request('/cgi-bin/file6.py', 'GET', headers=headers)
self.assertEqual(http.HTTPStatus.OK, res.status)
expected = f"HTTP_ACCEPT={expected}".encode('ascii')
self.assertIn(expected, res.read())
class SocketlessRequestHandler(SimpleHTTPRequestHandler):
def __init__(self, directory=None):
request = mock.Mock()
request.makefile.return_value = BytesIO()
super().__init__(request, None, None, directory=directory)
self.get_called = False
self.protocol_version = "HTTP/1.1"
def do_GET(self):
self.get_called = True
self.send_response(HTTPStatus.OK)
self.send_header('Content-Type', 'text/html')
self.end_headers()
self.wfile.write(b'<html><body>Data</body></html>\r\n')
def log_message(self, format, *args):
pass
class RejectingSocketlessRequestHandler(SocketlessRequestHandler):
def handle_expect_100(self):
self.send_error(HTTPStatus.EXPECTATION_FAILED)
return False
class AuditableBytesIO:
def __init__(self):
self.datas = []
def write(self, data):
self.datas.append(data)