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import json
import os.path
import shutil
import socket
import tempfile
from test import (
LONG_TIMEOUT,
SHORT_TIMEOUT,
onlyPy2,
onlyPy3,
onlySecureTransport,
withPyOpenSSL,
)
import pytest
import trustme
from dummyserver.server import DEFAULT_CA, HAS_IPV6, get_unreachable_address
from dummyserver.testcase import HTTPDummyProxyTestCase, IPv6HTTPDummyProxyTestCase
from urllib3._collections import HTTPHeaderDict
from urllib3.connectionpool import VerifiedHTTPSConnection, connection_from_url
from urllib3.exceptions import (
ConnectTimeoutError,
MaxRetryError,
ProxyError,
ProxySchemeUnknown,
ProxySchemeUnsupported,
SSLError,
)
from urllib3.poolmanager import ProxyManager, proxy_from_url
from urllib3.util.ssl_ import create_urllib3_context
from .. import TARPIT_HOST, requires_network
# Retry failed tests
pytestmark = pytest.mark.flaky
class TestHTTPProxyManager(HTTPDummyProxyTestCase):
@classmethod
def setup_class(cls):
super(TestHTTPProxyManager, cls).setup_class()
cls.http_url = "http://%s:%d" % (cls.http_host, cls.http_port)
cls.http_url_alt = "http://%s:%d" % (cls.http_host_alt, cls.http_port)
cls.https_url = "https://%s:%d" % (cls.https_host, cls.https_port)
cls.https_url_alt = "https://%s:%d" % (cls.https_host_alt, cls.https_port)
cls.proxy_url = "http://%s:%d" % (cls.proxy_host, cls.proxy_port)
cls.https_proxy_url = "https://%s:%d" % (
cls.proxy_host,
cls.https_proxy_port,
)
# Generate another CA to test verification failure
cls.certs_dir = tempfile.mkdtemp()
bad_ca = trustme.CA()
cls.bad_ca_path = os.path.join(cls.certs_dir, "ca_bad.pem")
bad_ca.cert_pem.write_to_path(cls.bad_ca_path)
@classmethod
def teardown_class(cls):
super(TestHTTPProxyManager, cls).teardown_class()
shutil.rmtree(cls.certs_dir)
def test_basic_proxy(self):
with proxy_from_url(self.proxy_url, ca_certs=DEFAULT_CA) as http:
r = http.request("GET", "%s/" % self.http_url)
assert r.status == 200
r = http.request("GET", "%s/" % self.https_url)
assert r.status == 200
@onlyPy3
def test_https_proxy(self):
with proxy_from_url(self.https_proxy_url, ca_certs=DEFAULT_CA) as https:
r = https.request("GET", "%s/" % self.https_url)
assert r.status == 200
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
@onlyPy3
def test_https_proxy_with_proxy_ssl_context(self):
proxy_ssl_context = create_urllib3_context()
proxy_ssl_context.load_verify_locations(DEFAULT_CA)
with proxy_from_url(
self.https_proxy_url,
proxy_ssl_context=proxy_ssl_context,
ca_certs=DEFAULT_CA,
) as https:
r = https.request("GET", "%s/" % self.https_url)
assert r.status == 200
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
@onlyPy2
def test_https_proxy_not_supported(self):
with proxy_from_url(self.https_proxy_url, ca_certs=DEFAULT_CA) as https:
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
with pytest.raises(ProxySchemeUnsupported) as excinfo:
https.request("GET", "%s/" % self.https_url)
assert "is not supported in Python 2" in str(excinfo.value)
@withPyOpenSSL
@onlyPy3
def test_https_proxy_pyopenssl_not_supported(self):
with proxy_from_url(self.https_proxy_url, ca_certs=DEFAULT_CA) as https:
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
with pytest.raises(ProxySchemeUnsupported) as excinfo:
https.request("GET", "%s/" % self.https_url)
assert "isn't available on non-native SSLContext" in str(excinfo.value)
@onlySecureTransport
@onlyPy3
def test_https_proxy_securetransport_not_supported(self):
with proxy_from_url(self.https_proxy_url, ca_certs=DEFAULT_CA) as https:
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
with pytest.raises(ProxySchemeUnsupported) as excinfo:
https.request("GET", "%s/" % self.https_url)
assert "isn't available on non-native SSLContext" in str(excinfo.value)
def test_https_proxy_forwarding_for_https(self):
with proxy_from_url(
self.https_proxy_url,
ca_certs=DEFAULT_CA,
use_forwarding_for_https=True,
) as https:
r = https.request("GET", "%s/" % self.http_url)
assert r.status == 200
r = https.request("GET", "%s/" % self.https_url)
assert r.status == 200
def test_nagle_proxy(self):
"""Test that proxy connections do not have TCP_NODELAY turned on"""
with ProxyManager(self.proxy_url) as http:
hc2 = http.connection_from_host(self.http_host, self.http_port)
conn = hc2._get_conn()
try:
hc2._make_request(conn, "GET", "/")
tcp_nodelay_setting = conn.sock.getsockopt(
socket.IPPROTO_TCP, socket.TCP_NODELAY
)
assert tcp_nodelay_setting == 0, (
"Expected TCP_NODELAY for proxies to be set "
"to zero, instead was %s" % tcp_nodelay_setting
)
finally:
conn.close()
def test_proxy_conn_fail(self):
host, port = get_unreachable_address()
with proxy_from_url(
"http://%s:%s/" % (host, port), retries=1, timeout=LONG_TIMEOUT
) as http:
with pytest.raises(MaxRetryError):
http.request("GET", "%s/" % self.https_url)
with pytest.raises(MaxRetryError):
http.request("GET", "%s/" % self.http_url)
with pytest.raises(MaxRetryError) as e:
http.request("GET", "%s/" % self.http_url)
assert type(e.value.reason) == ProxyError
def test_oldapi(self):
with ProxyManager(
connection_from_url(self.proxy_url), ca_certs=DEFAULT_CA
) as http:
r = http.request("GET", "%s/" % self.http_url)
assert r.status == 200
r = http.request("GET", "%s/" % self.https_url)
assert r.status == 200
def test_proxy_verified(self):
with proxy_from_url(
self.proxy_url, cert_reqs="REQUIRED", ca_certs=self.bad_ca_path
) as http:
https_pool = http._new_pool("https", self.https_host, self.https_port)
with pytest.raises(MaxRetryError) as e:
https_pool.request("GET", "/", retries=0)
assert isinstance(e.value.reason, SSLError)
assert "certificate verify failed" in str(e.value.reason), (
"Expected 'certificate verify failed', instead got: %r" % e.value.reason
)
http = proxy_from_url(
self.proxy_url, cert_reqs="REQUIRED", ca_certs=DEFAULT_CA
)
https_pool = http._new_pool("https", self.https_host, self.https_port)
conn = https_pool._new_conn()
assert conn.__class__ == VerifiedHTTPSConnection
https_pool.request("GET", "/") # Should succeed without exceptions.
http = proxy_from_url(
self.proxy_url, cert_reqs="REQUIRED", ca_certs=DEFAULT_CA
)
https_fail_pool = http._new_pool("https", "127.0.0.1", self.https_port)
with pytest.raises(MaxRetryError) as e:
https_fail_pool.request("GET", "/", retries=0)
assert isinstance(e.value.reason, SSLError)
assert "doesn't match" in str(e.value.reason)
def test_redirect(self):
with proxy_from_url(self.proxy_url) as http:
r = http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": "%s/" % self.http_url},
redirect=False,
)
assert r.status == 303
r = http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": "%s/" % self.http_url},
)
assert r.status == 200
assert r.data == b"Dummy server!"
def test_cross_host_redirect(self):
with proxy_from_url(self.proxy_url) as http:
cross_host_location = "%s/echo?a=b" % self.http_url_alt
with pytest.raises(MaxRetryError):
http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": cross_host_location},
retries=0,
)
r = http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": "%s/echo?a=b" % self.http_url_alt},
retries=1,
)
assert r._pool.host != self.http_host_alt
def test_cross_protocol_redirect(self):
with proxy_from_url(self.proxy_url, ca_certs=DEFAULT_CA) as http:
cross_protocol_location = "%s/echo?a=b" % self.https_url
with pytest.raises(MaxRetryError):
http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": cross_protocol_location},
retries=0,
)
r = http.request(
"GET",
"%s/redirect" % self.http_url,
fields={"target": "%s/echo?a=b" % self.https_url},
retries=1,
)
assert r._pool.host == self.https_host
def test_headers(self):
with proxy_from_url(
self.proxy_url,
headers={"Foo": "bar"},
proxy_headers={"Hickory": "dickory"},
ca_certs=DEFAULT_CA,
) as http:
r = http.request_encode_url("GET", "%s/headers" % self.http_url)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host,
self.http_port,
)
r = http.request_encode_url("GET", "%s/headers" % self.http_url_alt)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host_alt,
self.http_port,
)
r = http.request_encode_url("GET", "%s/headers" % self.https_url)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") is None
assert returned_headers.get("Host") == "%s:%s" % (
self.https_host,
self.https_port,
)
r = http.request_encode_body("POST", "%s/headers" % self.http_url)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host,
self.http_port,
)
r = http.request_encode_url(
"GET", "%s/headers" % self.http_url, headers={"Baz": "quux"}
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") is None
assert returned_headers.get("Baz") == "quux"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host,
self.http_port,
)
r = http.request_encode_url(
"GET", "%s/headers" % self.https_url, headers={"Baz": "quux"}
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") is None
assert returned_headers.get("Baz") == "quux"
assert returned_headers.get("Hickory") is None
assert returned_headers.get("Host") == "%s:%s" % (
self.https_host,
self.https_port,
)
r = http.request_encode_body(
"GET", "%s/headers" % self.http_url, headers={"Baz": "quux"}
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") is None
assert returned_headers.get("Baz") == "quux"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host,
self.http_port,
)
r = http.request_encode_body(
"GET", "%s/headers" % self.https_url, headers={"Baz": "quux"}
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") is None
assert returned_headers.get("Baz") == "quux"
assert returned_headers.get("Hickory") is None
assert returned_headers.get("Host") == "%s:%s" % (
self.https_host,
self.https_port,
)
@onlyPy3
def test_https_headers(self):
with proxy_from_url(
self.https_proxy_url,
headers={"Foo": "bar"},
proxy_headers={"Hickory": "dickory"},
ca_certs=DEFAULT_CA,
) as http:
r = http.request_encode_url("GET", "%s/headers" % self.http_url)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host,
self.http_port,
)
r = http.request_encode_url("GET", "%s/headers" % self.http_url_alt)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.http_host_alt,
self.http_port,
)
r = http.request_encode_body(
"GET", "%s/headers" % self.https_url, headers={"Baz": "quux"}
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") is None
assert returned_headers.get("Baz") == "quux"
assert returned_headers.get("Hickory") is None
assert returned_headers.get("Host") == "%s:%s" % (
self.https_host,
self.https_port,
)
def test_https_headers_forwarding_for_https(self):
with proxy_from_url(
self.https_proxy_url,
headers={"Foo": "bar"},
proxy_headers={"Hickory": "dickory"},
ca_certs=DEFAULT_CA,
use_forwarding_for_https=True,
) as http:
r = http.request_encode_url("GET", "%s/headers" % self.https_url)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Hickory") == "dickory"
assert returned_headers.get("Host") == "%s:%s" % (
self.https_host,
self.https_port,
)
def test_headerdict(self):
default_headers = HTTPHeaderDict(a="b")
proxy_headers = HTTPHeaderDict()
proxy_headers.add("foo", "bar")
with proxy_from_url(
self.proxy_url, headers=default_headers, proxy_headers=proxy_headers
) as http:
request_headers = HTTPHeaderDict(baz="quux")
r = http.request(
"GET", "%s/headers" % self.http_url, headers=request_headers
)
returned_headers = json.loads(r.data.decode())
assert returned_headers.get("Foo") == "bar"
assert returned_headers.get("Baz") == "quux"
def test_proxy_pooling(self):
with proxy_from_url(self.proxy_url, cert_reqs="NONE") as http:
for x in range(2):
http.urlopen("GET", self.http_url)
assert len(http.pools) == 1
for x in range(2):
http.urlopen("GET", self.http_url_alt)
assert len(http.pools) == 1
for x in range(2):
http.urlopen("GET", self.https_url)
assert len(http.pools) == 2
for x in range(2):
http.urlopen("GET", self.https_url_alt)
assert len(http.pools) == 3
def test_proxy_pooling_ext(self):
with proxy_from_url(self.proxy_url) as http:
hc1 = http.connection_from_url(self.http_url)
hc2 = http.connection_from_host(self.http_host, self.http_port)
hc3 = http.connection_from_url(self.http_url_alt)
hc4 = http.connection_from_host(self.http_host_alt, self.http_port)
assert hc1 == hc2
assert hc2 == hc3
assert hc3 == hc4
sc1 = http.connection_from_url(self.https_url)
sc2 = http.connection_from_host(
self.https_host, self.https_port, scheme="https"
)
sc3 = http.connection_from_url(self.https_url_alt)
sc4 = http.connection_from_host(
self.https_host_alt, self.https_port, scheme="https"
)
assert sc1 == sc2
assert sc2 != sc3
assert sc3 == sc4
@pytest.mark.timeout(0.5)
@requires_network
def test_https_proxy_timeout(self):
with proxy_from_url("https://{host}".format(host=TARPIT_HOST)) as https:
with pytest.raises(MaxRetryError) as e:
https.request("GET", self.http_url, timeout=SHORT_TIMEOUT)
assert type(e.value.reason) == ConnectTimeoutError
@pytest.mark.timeout(0.5)
@requires_network
def test_https_proxy_pool_timeout(self):
with proxy_from_url(
"https://{host}".format(host=TARPIT_HOST), timeout=SHORT_TIMEOUT
) as https:
with pytest.raises(MaxRetryError) as e:
https.request("GET", self.http_url)
assert type(e.value.reason) == ConnectTimeoutError
def test_scheme_host_case_insensitive(self):
"""Assert that upper-case schemes and hosts are normalized."""
with proxy_from_url(self.proxy_url.upper(), ca_certs=DEFAULT_CA) as http:
r = http.request("GET", "%s/" % self.http_url.upper())
assert r.status == 200
r = http.request("GET", "%s/" % self.https_url.upper())
assert r.status == 200
@pytest.mark.parametrize(
"url, error_msg",
[
(
"127.0.0.1",
"Proxy URL had no scheme, should start with http:// or https://",
),
(
"localhost:8080",
"Proxy URL had no scheme, should start with http:// or https://",
),
(
"ftp://google.com",
"Proxy URL had unsupported scheme ftp, should use http:// or https://",
),
],
)
def test_invalid_schema(self, url, error_msg):
with pytest.raises(ProxySchemeUnknown, match=error_msg):
proxy_from_url(url)
@pytest.mark.skipif(not HAS_IPV6, reason="Only runs on IPv6 systems")
class TestIPv6HTTPProxyManager(IPv6HTTPDummyProxyTestCase):
@classmethod
def setup_class(cls):
HTTPDummyProxyTestCase.setup_class()
cls.http_url = "http://%s:%d" % (cls.http_host, cls.http_port)
cls.http_url_alt = "http://%s:%d" % (cls.http_host_alt, cls.http_port)
cls.https_url = "https://%s:%d" % (cls.https_host, cls.https_port)
cls.https_url_alt = "https://%s:%d" % (cls.https_host_alt, cls.https_port)
cls.proxy_url = "http://[%s]:%d" % (cls.proxy_host, cls.proxy_port)
def test_basic_ipv6_proxy(self):
with proxy_from_url(self.proxy_url, ca_certs=DEFAULT_CA) as http:
r = http.request("GET", "%s/" % self.http_url)
assert r.status == 200
r = http.request("GET", "%s/" % self.https_url)
assert r.status == 200
class TestHTTPSProxyVerification:
@onlyPy3
def test_https_proxy_hostname_verification(self, no_localhost_san_server):
bad_server = no_localhost_san_server
bad_proxy_url = "https://%s:%s" % (bad_server.host, bad_server.port)
# An exception will be raised before we contact the destination domain.
test_url = "testing.com"
with proxy_from_url(bad_proxy_url, ca_certs=bad_server.ca_certs) as https:
with pytest.raises(MaxRetryError) as e:
https.request("GET", "http://%s/" % test_url)
assert isinstance(e.value.reason, SSLError)
assert "hostname 'localhost' doesn't match" in str(e.value.reason)
with pytest.raises(MaxRetryError) as e:
https.request("GET", "https://%s/" % test_url)
assert isinstance(e.value.reason, SSLError)
assert "hostname 'localhost' doesn't match" in str(
e.value.reason
) or "Hostname mismatch" in str(e.value.reason)
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