677 lines
24 KiB
Python
677 lines
24 KiB
Python
import base64
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import os
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import email
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import urllib.parse
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import urllib.request
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import http.server
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import threading
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import unittest
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import hashlib
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from test import support
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from test.support import hashlib_helper
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try:
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import ssl
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except ImportError:
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ssl = None
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here = os.path.dirname(__file__)
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# Self-signed cert file for 'localhost'
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CERT_localhost = os.path.join(here, 'keycert.pem')
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# Self-signed cert file for 'fakehostname'
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CERT_fakehostname = os.path.join(here, 'keycert2.pem')
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# Loopback http server infrastructure
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class LoopbackHttpServer(http.server.HTTPServer):
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"""HTTP server w/ a few modifications that make it useful for
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loopback testing purposes.
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"""
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def __init__(self, server_address, RequestHandlerClass):
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http.server.HTTPServer.__init__(self,
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server_address,
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RequestHandlerClass)
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# Set the timeout of our listening socket really low so
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# that we can stop the server easily.
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self.socket.settimeout(0.1)
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def get_request(self):
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"""HTTPServer method, overridden."""
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request, client_address = self.socket.accept()
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# It's a loopback connection, so setting the timeout
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# really low shouldn't affect anything, but should make
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# deadlocks less likely to occur.
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request.settimeout(10.0)
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return (request, client_address)
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class LoopbackHttpServerThread(threading.Thread):
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"""Stoppable thread that runs a loopback http server."""
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def __init__(self, request_handler):
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threading.Thread.__init__(self)
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self._stop_server = False
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self.ready = threading.Event()
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request_handler.protocol_version = "HTTP/1.0"
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self.httpd = LoopbackHttpServer(("127.0.0.1", 0),
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request_handler)
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self.port = self.httpd.server_port
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def stop(self):
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"""Stops the webserver if it's currently running."""
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self._stop_server = True
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self.join()
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self.httpd.server_close()
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def run(self):
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self.ready.set()
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while not self._stop_server:
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self.httpd.handle_request()
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# Authentication infrastructure
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class DigestAuthHandler:
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"""Handler for performing digest authentication."""
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def __init__(self):
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self._request_num = 0
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self._nonces = []
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self._users = {}
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self._realm_name = "Test Realm"
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self._qop = "auth"
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def set_qop(self, qop):
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self._qop = qop
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def set_users(self, users):
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assert isinstance(users, dict)
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self._users = users
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def set_realm(self, realm):
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self._realm_name = realm
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def _generate_nonce(self):
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self._request_num += 1
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nonce = hashlib.md5(str(self._request_num).encode("ascii")).hexdigest()
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self._nonces.append(nonce)
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return nonce
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def _create_auth_dict(self, auth_str):
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first_space_index = auth_str.find(" ")
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auth_str = auth_str[first_space_index+1:]
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parts = auth_str.split(",")
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auth_dict = {}
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for part in parts:
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name, value = part.split("=")
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name = name.strip()
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if value[0] == '"' and value[-1] == '"':
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value = value[1:-1]
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else:
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value = value.strip()
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auth_dict[name] = value
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return auth_dict
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def _validate_auth(self, auth_dict, password, method, uri):
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final_dict = {}
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final_dict.update(auth_dict)
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final_dict["password"] = password
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final_dict["method"] = method
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final_dict["uri"] = uri
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HA1_str = "%(username)s:%(realm)s:%(password)s" % final_dict
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HA1 = hashlib.md5(HA1_str.encode("ascii")).hexdigest()
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HA2_str = "%(method)s:%(uri)s" % final_dict
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HA2 = hashlib.md5(HA2_str.encode("ascii")).hexdigest()
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final_dict["HA1"] = HA1
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final_dict["HA2"] = HA2
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response_str = "%(HA1)s:%(nonce)s:%(nc)s:" \
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"%(cnonce)s:%(qop)s:%(HA2)s" % final_dict
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response = hashlib.md5(response_str.encode("ascii")).hexdigest()
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return response == auth_dict["response"]
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def _return_auth_challenge(self, request_handler):
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request_handler.send_response(407, "Proxy Authentication Required")
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request_handler.send_header("Content-Type", "text/html")
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request_handler.send_header(
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'Proxy-Authenticate', 'Digest realm="%s", '
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'qop="%s",'
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'nonce="%s", ' % \
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(self._realm_name, self._qop, self._generate_nonce()))
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# XXX: Not sure if we're supposed to add this next header or
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# not.
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#request_handler.send_header('Connection', 'close')
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request_handler.end_headers()
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request_handler.wfile.write(b"Proxy Authentication Required.")
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return False
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def handle_request(self, request_handler):
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"""Performs digest authentication on the given HTTP request
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handler. Returns True if authentication was successful, False
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otherwise.
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If no users have been set, then digest auth is effectively
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disabled and this method will always return True.
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"""
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if len(self._users) == 0:
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return True
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if "Proxy-Authorization" not in request_handler.headers:
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return self._return_auth_challenge(request_handler)
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else:
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auth_dict = self._create_auth_dict(
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request_handler.headers["Proxy-Authorization"]
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)
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if auth_dict["username"] in self._users:
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password = self._users[ auth_dict["username"] ]
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else:
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return self._return_auth_challenge(request_handler)
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if not auth_dict.get("nonce") in self._nonces:
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return self._return_auth_challenge(request_handler)
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else:
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self._nonces.remove(auth_dict["nonce"])
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auth_validated = False
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# MSIE uses short_path in its validation, but Python's
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# urllib.request uses the full path, so we're going to see if
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# either of them works here.
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for path in [request_handler.path, request_handler.short_path]:
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if self._validate_auth(auth_dict,
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password,
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request_handler.command,
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path):
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auth_validated = True
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if not auth_validated:
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return self._return_auth_challenge(request_handler)
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return True
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class BasicAuthHandler(http.server.BaseHTTPRequestHandler):
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"""Handler for performing basic authentication."""
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# Server side values
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USER = 'testUser'
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PASSWD = 'testPass'
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REALM = 'Test'
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USER_PASSWD = "%s:%s" % (USER, PASSWD)
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ENCODED_AUTH = base64.b64encode(USER_PASSWD.encode('ascii')).decode('ascii')
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def __init__(self, *args, **kwargs):
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http.server.BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
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def log_message(self, format, *args):
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# Suppress console log message
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pass
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def do_HEAD(self):
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self.send_response(200)
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self.send_header("Content-type", "text/html")
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self.end_headers()
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def do_AUTHHEAD(self):
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self.send_response(401)
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self.send_header("WWW-Authenticate", "Basic realm=\"%s\"" % self.REALM)
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self.send_header("Content-type", "text/html")
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self.end_headers()
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def do_GET(self):
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if not self.headers.get("Authorization", ""):
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self.do_AUTHHEAD()
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self.wfile.write(b"No Auth header received")
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elif self.headers.get(
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"Authorization", "") == "Basic " + self.ENCODED_AUTH:
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self.send_response(200)
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self.end_headers()
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self.wfile.write(b"It works")
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else:
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# Request Unauthorized
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self.do_AUTHHEAD()
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# Proxy test infrastructure
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class FakeProxyHandler(http.server.BaseHTTPRequestHandler):
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"""This is a 'fake proxy' that makes it look like the entire
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internet has gone down due to a sudden zombie invasion. It main
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utility is in providing us with authentication support for
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testing.
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"""
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def __init__(self, digest_auth_handler, *args, **kwargs):
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# This has to be set before calling our parent's __init__(), which will
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# try to call do_GET().
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self.digest_auth_handler = digest_auth_handler
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http.server.BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
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def log_message(self, format, *args):
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# Uncomment the next line for debugging.
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# sys.stderr.write(format % args)
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pass
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def do_GET(self):
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(scm, netloc, path, params, query, fragment) = urllib.parse.urlparse(
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self.path, "http")
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self.short_path = path
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if self.digest_auth_handler.handle_request(self):
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self.send_response(200, "OK")
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self.send_header("Content-Type", "text/html")
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self.end_headers()
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self.wfile.write(bytes("You've reached %s!<BR>" % self.path,
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"ascii"))
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self.wfile.write(b"Our apologies, but our server is down due to "
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b"a sudden zombie invasion.")
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# Test cases
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class BasicAuthTests(unittest.TestCase):
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USER = "testUser"
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PASSWD = "testPass"
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INCORRECT_PASSWD = "Incorrect"
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REALM = "Test"
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def setUp(self):
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super(BasicAuthTests, self).setUp()
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# With Basic Authentication
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def http_server_with_basic_auth_handler(*args, **kwargs):
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return BasicAuthHandler(*args, **kwargs)
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self.server = LoopbackHttpServerThread(http_server_with_basic_auth_handler)
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self.addCleanup(self.stop_server)
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self.server_url = 'http://127.0.0.1:%s' % self.server.port
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self.server.start()
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self.server.ready.wait()
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def stop_server(self):
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self.server.stop()
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self.server = None
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def tearDown(self):
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super(BasicAuthTests, self).tearDown()
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def test_basic_auth_success(self):
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ah = urllib.request.HTTPBasicAuthHandler()
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ah.add_password(self.REALM, self.server_url, self.USER, self.PASSWD)
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urllib.request.install_opener(urllib.request.build_opener(ah))
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try:
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self.assertTrue(urllib.request.urlopen(self.server_url))
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except urllib.error.HTTPError:
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self.fail("Basic auth failed for the url: %s" % self.server_url)
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def test_basic_auth_httperror(self):
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ah = urllib.request.HTTPBasicAuthHandler()
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ah.add_password(self.REALM, self.server_url, self.USER, self.INCORRECT_PASSWD)
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urllib.request.install_opener(urllib.request.build_opener(ah))
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self.assertRaises(urllib.error.HTTPError, urllib.request.urlopen, self.server_url)
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@hashlib_helper.requires_hashdigest("md5")
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class ProxyAuthTests(unittest.TestCase):
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URL = "http://localhost"
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USER = "tester"
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PASSWD = "test123"
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REALM = "TestRealm"
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def setUp(self):
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super(ProxyAuthTests, self).setUp()
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# Ignore proxy bypass settings in the environment.
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def restore_environ(old_environ):
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os.environ.clear()
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os.environ.update(old_environ)
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self.addCleanup(restore_environ, os.environ.copy())
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os.environ['NO_PROXY'] = ''
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os.environ['no_proxy'] = ''
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self.digest_auth_handler = DigestAuthHandler()
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self.digest_auth_handler.set_users({self.USER: self.PASSWD})
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self.digest_auth_handler.set_realm(self.REALM)
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# With Digest Authentication.
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def create_fake_proxy_handler(*args, **kwargs):
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return FakeProxyHandler(self.digest_auth_handler, *args, **kwargs)
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self.server = LoopbackHttpServerThread(create_fake_proxy_handler)
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self.addCleanup(self.stop_server)
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self.server.start()
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self.server.ready.wait()
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proxy_url = "http://127.0.0.1:%d" % self.server.port
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handler = urllib.request.ProxyHandler({"http" : proxy_url})
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self.proxy_digest_handler = urllib.request.ProxyDigestAuthHandler()
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self.opener = urllib.request.build_opener(
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handler, self.proxy_digest_handler)
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def stop_server(self):
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self.server.stop()
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self.server = None
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def test_proxy_with_bad_password_raises_httperror(self):
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self.proxy_digest_handler.add_password(self.REALM, self.URL,
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self.USER, self.PASSWD+"bad")
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self.digest_auth_handler.set_qop("auth")
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self.assertRaises(urllib.error.HTTPError,
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self.opener.open,
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self.URL)
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def test_proxy_with_no_password_raises_httperror(self):
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self.digest_auth_handler.set_qop("auth")
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self.assertRaises(urllib.error.HTTPError,
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self.opener.open,
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self.URL)
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def test_proxy_qop_auth_works(self):
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self.proxy_digest_handler.add_password(self.REALM, self.URL,
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self.USER, self.PASSWD)
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self.digest_auth_handler.set_qop("auth")
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with self.opener.open(self.URL) as result:
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while result.read():
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pass
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def test_proxy_qop_auth_int_works_or_throws_urlerror(self):
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self.proxy_digest_handler.add_password(self.REALM, self.URL,
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self.USER, self.PASSWD)
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self.digest_auth_handler.set_qop("auth-int")
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try:
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result = self.opener.open(self.URL)
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except urllib.error.URLError:
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# It's okay if we don't support auth-int, but we certainly
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# shouldn't receive any kind of exception here other than
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# a URLError.
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pass
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else:
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with result:
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while result.read():
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pass
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def GetRequestHandler(responses):
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class FakeHTTPRequestHandler(http.server.BaseHTTPRequestHandler):
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server_version = "TestHTTP/"
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requests = []
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headers_received = []
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port = 80
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def do_GET(self):
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body = self.send_head()
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while body:
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done = self.wfile.write(body)
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body = body[done:]
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def do_POST(self):
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content_length = self.headers["Content-Length"]
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post_data = self.rfile.read(int(content_length))
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self.do_GET()
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self.requests.append(post_data)
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def send_head(self):
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FakeHTTPRequestHandler.headers_received = self.headers
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self.requests.append(self.path)
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response_code, headers, body = responses.pop(0)
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self.send_response(response_code)
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for (header, value) in headers:
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self.send_header(header, value % {'port':self.port})
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if body:
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self.send_header("Content-type", "text/plain")
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self.end_headers()
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return body
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self.end_headers()
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def log_message(self, *args):
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pass
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return FakeHTTPRequestHandler
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class TestUrlopen(unittest.TestCase):
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"""Tests urllib.request.urlopen using the network.
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These tests are not exhaustive. Assuming that testing using files does a
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good job overall of some of the basic interface features. There are no
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tests exercising the optional 'data' and 'proxies' arguments. No tests
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for transparent redirection have been written.
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"""
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def setUp(self):
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super(TestUrlopen, self).setUp()
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# clear _opener global variable
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self.addCleanup(urllib.request.urlcleanup)
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# Ignore proxies for localhost tests.
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def restore_environ(old_environ):
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os.environ.clear()
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os.environ.update(old_environ)
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self.addCleanup(restore_environ, os.environ.copy())
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os.environ['NO_PROXY'] = '*'
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os.environ['no_proxy'] = '*'
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def urlopen(self, url, data=None, **kwargs):
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l = []
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f = urllib.request.urlopen(url, data, **kwargs)
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try:
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# Exercise various methods
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l.extend(f.readlines(200))
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l.append(f.readline())
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l.append(f.read(1024))
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l.append(f.read())
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finally:
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f.close()
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return b"".join(l)
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def stop_server(self):
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self.server.stop()
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self.server = None
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def start_server(self, responses=None):
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if responses is None:
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responses = [(200, [], b"we don't care")]
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handler = GetRequestHandler(responses)
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self.server = LoopbackHttpServerThread(handler)
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self.addCleanup(self.stop_server)
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self.server.start()
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self.server.ready.wait()
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port = self.server.port
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handler.port = port
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return handler
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def start_https_server(self, responses=None, **kwargs):
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if not hasattr(urllib.request, 'HTTPSHandler'):
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self.skipTest('ssl support required')
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from test.ssl_servers import make_https_server
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if responses is None:
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responses = [(200, [], b"we care a bit")]
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handler = GetRequestHandler(responses)
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server = make_https_server(self, handler_class=handler, **kwargs)
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handler.port = server.port
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return handler
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def test_redirection(self):
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expected_response = b"We got here..."
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responses = [
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(302, [("Location", "http://localhost:%(port)s/somewhere_else")],
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""),
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(200, [], expected_response)
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]
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handler = self.start_server(responses)
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data = self.urlopen("http://localhost:%s/" % handler.port)
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|
self.assertEqual(data, expected_response)
|
|
self.assertEqual(handler.requests, ["/", "/somewhere_else"])
|
|
|
|
def test_chunked(self):
|
|
expected_response = b"hello world"
|
|
chunked_start = (
|
|
b'a\r\n'
|
|
b'hello worl\r\n'
|
|
b'1\r\n'
|
|
b'd\r\n'
|
|
b'0\r\n'
|
|
)
|
|
response = [(200, [("Transfer-Encoding", "chunked")], chunked_start)]
|
|
handler = self.start_server(response)
|
|
data = self.urlopen("http://localhost:%s/" % handler.port)
|
|
self.assertEqual(data, expected_response)
|
|
|
|
def test_404(self):
|
|
expected_response = b"Bad bad bad..."
|
|
handler = self.start_server([(404, [], expected_response)])
|
|
|
|
try:
|
|
self.urlopen("http://localhost:%s/weeble" % handler.port)
|
|
except urllib.error.URLError as f:
|
|
data = f.read()
|
|
f.close()
|
|
else:
|
|
self.fail("404 should raise URLError")
|
|
|
|
self.assertEqual(data, expected_response)
|
|
self.assertEqual(handler.requests, ["/weeble"])
|
|
|
|
def test_200(self):
|
|
expected_response = b"pycon 2008..."
|
|
handler = self.start_server([(200, [], expected_response)])
|
|
data = self.urlopen("http://localhost:%s/bizarre" % handler.port)
|
|
self.assertEqual(data, expected_response)
|
|
self.assertEqual(handler.requests, ["/bizarre"])
|
|
|
|
def test_200_with_parameters(self):
|
|
expected_response = b"pycon 2008..."
|
|
handler = self.start_server([(200, [], expected_response)])
|
|
data = self.urlopen("http://localhost:%s/bizarre" % handler.port,
|
|
b"get=with_feeling")
|
|
self.assertEqual(data, expected_response)
|
|
self.assertEqual(handler.requests, ["/bizarre", b"get=with_feeling"])
|
|
|
|
def test_https(self):
|
|
handler = self.start_https_server()
|
|
context = ssl.create_default_context(cafile=CERT_localhost)
|
|
data = self.urlopen("https://localhost:%s/bizarre" % handler.port, context=context)
|
|
self.assertEqual(data, b"we care a bit")
|
|
|
|
def test_https_with_cafile(self):
|
|
handler = self.start_https_server(certfile=CERT_localhost)
|
|
with support.check_warnings(('', DeprecationWarning)):
|
|
# Good cert
|
|
data = self.urlopen("https://localhost:%s/bizarre" % handler.port,
|
|
cafile=CERT_localhost)
|
|
self.assertEqual(data, b"we care a bit")
|
|
# Bad cert
|
|
with self.assertRaises(urllib.error.URLError) as cm:
|
|
self.urlopen("https://localhost:%s/bizarre" % handler.port,
|
|
cafile=CERT_fakehostname)
|
|
# Good cert, but mismatching hostname
|
|
handler = self.start_https_server(certfile=CERT_fakehostname)
|
|
with self.assertRaises(urllib.error.URLError) as cm:
|
|
self.urlopen("https://localhost:%s/bizarre" % handler.port,
|
|
cafile=CERT_fakehostname)
|
|
|
|
def test_https_with_cadefault(self):
|
|
handler = self.start_https_server(certfile=CERT_localhost)
|
|
# Self-signed cert should fail verification with system certificate store
|
|
with support.check_warnings(('', DeprecationWarning)):
|
|
with self.assertRaises(urllib.error.URLError) as cm:
|
|
self.urlopen("https://localhost:%s/bizarre" % handler.port,
|
|
cadefault=True)
|
|
|
|
def test_https_sni(self):
|
|
if ssl is None:
|
|
self.skipTest("ssl module required")
|
|
if not ssl.HAS_SNI:
|
|
self.skipTest("SNI support required in OpenSSL")
|
|
sni_name = None
|
|
def cb_sni(ssl_sock, server_name, initial_context):
|
|
nonlocal sni_name
|
|
sni_name = server_name
|
|
context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
|
|
context.set_servername_callback(cb_sni)
|
|
handler = self.start_https_server(context=context, certfile=CERT_localhost)
|
|
context = ssl.create_default_context(cafile=CERT_localhost)
|
|
self.urlopen("https://localhost:%s" % handler.port, context=context)
|
|
self.assertEqual(sni_name, "localhost")
|
|
|
|
def test_sending_headers(self):
|
|
handler = self.start_server()
|
|
req = urllib.request.Request("http://localhost:%s/" % handler.port,
|
|
headers={"Range": "bytes=20-39"})
|
|
with urllib.request.urlopen(req):
|
|
pass
|
|
self.assertEqual(handler.headers_received["Range"], "bytes=20-39")
|
|
|
|
def test_basic(self):
|
|
handler = self.start_server()
|
|
with urllib.request.urlopen("http://localhost:%s" % handler.port) as open_url:
|
|
for attr in ("read", "close", "info", "geturl"):
|
|
self.assertTrue(hasattr(open_url, attr), "object returned from "
|
|
"urlopen lacks the %s attribute" % attr)
|
|
self.assertTrue(open_url.read(), "calling 'read' failed")
|
|
|
|
def test_info(self):
|
|
handler = self.start_server()
|
|
open_url = urllib.request.urlopen(
|
|
"http://localhost:%s" % handler.port)
|
|
with open_url:
|
|
info_obj = open_url.info()
|
|
self.assertIsInstance(info_obj, email.message.Message,
|
|
"object returned by 'info' is not an "
|
|
"instance of email.message.Message")
|
|
self.assertEqual(info_obj.get_content_subtype(), "plain")
|
|
|
|
def test_geturl(self):
|
|
# Make sure same URL as opened is returned by geturl.
|
|
handler = self.start_server()
|
|
open_url = urllib.request.urlopen("http://localhost:%s" % handler.port)
|
|
with open_url:
|
|
url = open_url.geturl()
|
|
self.assertEqual(url, "http://localhost:%s" % handler.port)
|
|
|
|
def test_iteration(self):
|
|
expected_response = b"pycon 2008..."
|
|
handler = self.start_server([(200, [], expected_response)])
|
|
data = urllib.request.urlopen("http://localhost:%s" % handler.port)
|
|
for line in data:
|
|
self.assertEqual(line, expected_response)
|
|
|
|
def test_line_iteration(self):
|
|
lines = [b"We\n", b"got\n", b"here\n", b"verylong " * 8192 + b"\n"]
|
|
expected_response = b"".join(lines)
|
|
handler = self.start_server([(200, [], expected_response)])
|
|
data = urllib.request.urlopen("http://localhost:%s" % handler.port)
|
|
for index, line in enumerate(data):
|
|
self.assertEqual(line, lines[index],
|
|
"Fetched line number %s doesn't match expected:\n"
|
|
" Expected length was %s, got %s" %
|
|
(index, len(lines[index]), len(line)))
|
|
self.assertEqual(index + 1, len(lines))
|
|
|
|
|
|
threads_key = None
|
|
|
|
def setUpModule():
|
|
# Store the threading_setup in a key and ensure that it is cleaned up
|
|
# in the tearDown
|
|
global threads_key
|
|
threads_key = support.threading_setup()
|
|
|
|
def tearDownModule():
|
|
if threads_key:
|
|
support.threading_cleanup(*threads_key)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|