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import pytest
from .env import H2Conf, H2TestEnv
def frame_padding(payload, padbits):
mask = (1 << padbits) - 1
return ((payload + 9 + mask) & ~mask) - (payload + 9)
@pytest.mark.skipif(condition=H2TestEnv.is_unsupported, reason="mod_http2 not supported here")
class TestPadding:
@pytest.fixture(autouse=True, scope='class')
def _class_scope(self, env):
def add_echo_handler(conf):
conf.add([
"<Location \"/h2test/echo\">",
" SetHandler h2test-echo",
"</Location>",
])
conf = H2Conf(env)
conf.start_vhost(domains=[f"ssl.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
add_echo_handler(conf)
conf.end_vhost()
conf.start_vhost(domains=[f"pad0.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
conf.add("H2Padding 0")
add_echo_handler(conf)
conf.end_vhost()
conf.start_vhost(domains=[f"pad1.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
conf.add("H2Padding 1")
add_echo_handler(conf)
conf.end_vhost()
conf.start_vhost(domains=[f"pad2.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
conf.add("H2Padding 2")
add_echo_handler(conf)
conf.end_vhost()
conf.start_vhost(domains=[f"pad3.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
conf.add("H2Padding 3")
add_echo_handler(conf)
conf.end_vhost()
conf.start_vhost(domains=[f"pad8.{env.http_tld}"], port=env.https_port, doc_root="htdocs/cgi")
conf.add("H2Padding 8")
add_echo_handler(conf)
conf.end_vhost()
conf.install()
assert env.apache_restart() == 0
# default paddings settings: 0 bits
def test_h2_104_01(self, env, repeat):
url = env.mkurl("https", "ssl", "/h2test/echo")
# we get 2 frames back: one with data and an empty one with EOF
# check the number of padding bytes is as expected
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i == frame_padding(len(data)+1, 0)
# 0 bits of padding
def test_h2_104_02(self, env):
url = env.mkurl("https", "pad0", "/h2test/echo")
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i == 0
# 1 bit of padding
def test_h2_104_03(self, env):
url = env.mkurl("https", "pad1", "/h2test/echo")
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i in range(0, 2)
# 2 bits of padding
def test_h2_104_04(self, env):
url = env.mkurl("https", "pad2", "/h2test/echo")
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i in range(0, 4)
# 3 bits of padding
def test_h2_104_05(self, env):
url = env.mkurl("https", "pad3", "/h2test/echo")
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i in range(0, 8)
# 8 bits of padding
def test_h2_104_06(self, env):
url = env.mkurl("https", "pad8", "/h2test/echo")
for data in ["x", "xx", "xxx", "xxxx", "xxxxx", "xxxxxx", "xxxxxxx", "xxxxxxxx"]:
r = env.nghttp().post_data(url, data, 5)
assert r.response["status"] == 200
for i in r.results["paddings"]:
assert i in range(0, 256)
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