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from __future__ import absolute_import, print_function, division
from io import BytesIO
from mock import Mock
import pytest
from netlib.exceptions import HttpException, HttpSyntaxException, HttpReadDisconnect, TcpDisconnect
from netlib.http import Headers
from netlib.http.http1.read import (
read_request, read_response, read_request_head,
read_response_head, read_body, connection_close, expected_http_body_size, _get_first_line,
_read_request_line, _parse_authority_form, _read_response_line, _check_http_version,
_read_headers, _read_chunked, get_header_tokens
)
from netlib.tutils import treq, tresp, raises
from netlib import exceptions
def test_get_header_tokens():
headers = Headers()
assert get_header_tokens(headers, "foo") == []
headers["foo"] = "bar"
assert get_header_tokens(headers, "foo") == ["bar"]
headers["foo"] = "bar, voing"
assert get_header_tokens(headers, "foo") == ["bar", "voing"]
headers.set_all("foo", ["bar, voing", "oink"])
assert get_header_tokens(headers, "foo") == ["bar", "voing", "oink"]
@pytest.mark.parametrize("input", [
b"GET / HTTP/1.1\r\n\r\nskip",
b"GET / HTTP/1.1\r\n\r\nskip",
b"GET / HTTP/1.1\r\n\r\nskip",
b"GET / HTTP/1.1 \r\n\r\nskip",
])
def test_read_request(input):
rfile = BytesIO(input)
r = read_request(rfile)
assert r.method == "GET"
assert r.content == b""
assert r.http_version == "HTTP/1.1"
assert r.timestamp_end
assert rfile.read() == b"skip"
@pytest.mark.parametrize("input", [
b"CONNECT :0 0",
])
def test_read_request_error(input):
rfile = BytesIO(input)
raises(exceptions.HttpException, read_request, rfile)
def test_read_request_head():
rfile = BytesIO(
b"GET / HTTP/1.1\r\n"
b"Content-Length: 4\r\n"
b"\r\n"
b"skip"
)
rfile.reset_timestamps = Mock()
rfile.first_byte_timestamp = 42
r = read_request_head(rfile)
assert r.method == "GET"
assert r.headers["Content-Length"] == "4"
assert r.content is None
assert rfile.reset_timestamps.called
assert r.timestamp_start == 42
assert rfile.read() == b"skip"
@pytest.mark.parametrize("input", [
b"HTTP/1.1 418 I'm a teapot\r\n\r\nbody",
b"HTTP/1.1 418 I'm a teapot\r\n\r\nbody",
b"HTTP/1.1 418 I'm a teapot\r\n\r\nbody",
b"HTTP/1.1 418 I'm a teapot \r\n\r\nbody",
])
def test_read_response(input):
req = treq()
rfile = BytesIO(input)
r = read_response(rfile, req)
assert r.http_version == "HTTP/1.1"
assert r.status_code == 418
assert r.reason == "I'm a teapot"
assert r.content == b"body"
assert r.timestamp_end
def test_read_response_head():
rfile = BytesIO(
b"HTTP/1.1 418 I'm a teapot\r\n"
b"Content-Length: 4\r\n"
b"\r\n"
b"skip"
)
rfile.reset_timestamps = Mock()
rfile.first_byte_timestamp = 42
r = read_response_head(rfile)
assert r.status_code == 418
assert r.headers["Content-Length"] == "4"
assert r.content is None
assert rfile.reset_timestamps.called
assert r.timestamp_start == 42
assert rfile.read() == b"skip"
class TestReadBody:
def test_chunked(self):
rfile = BytesIO(b"3\r\nfoo\r\n0\r\n\r\nbar")
body = b"".join(read_body(rfile, None))
assert body == b"foo"
assert rfile.read() == b"bar"
def test_known_size(self):
rfile = BytesIO(b"foobar")
body = b"".join(read_body(rfile, 3))
assert body == b"foo"
assert rfile.read() == b"bar"
def test_known_size_limit(self):
rfile = BytesIO(b"foobar")
with raises(HttpException):
b"".join(read_body(rfile, 3, 2))
def test_known_size_too_short(self):
rfile = BytesIO(b"foo")
with raises(HttpException):
b"".join(read_body(rfile, 6))
def test_unknown_size(self):
rfile = BytesIO(b"foobar")
body = b"".join(read_body(rfile, -1))
assert body == b"foobar"
def test_unknown_size_limit(self):
rfile = BytesIO(b"foobar")
with raises(HttpException):
b"".join(read_body(rfile, -1, 3))
def test_max_chunk_size(self):
rfile = BytesIO(b"123456")
assert list(read_body(rfile, -1, max_chunk_size=None)) == [b"123456"]
rfile = BytesIO(b"123456")
assert list(read_body(rfile, -1, max_chunk_size=1)) == [b"1", b"2", b"3", b"4", b"5", b"6"]
def test_connection_close():
headers = Headers()
assert connection_close(b"HTTP/1.0", headers)
assert not connection_close(b"HTTP/1.1", headers)
headers["connection"] = "keep-alive"
assert not connection_close(b"HTTP/1.1", headers)
headers["connection"] = "close"
assert connection_close(b"HTTP/1.1", headers)
headers["connection"] = "foobar"
assert connection_close(b"HTTP/1.0", headers)
assert not connection_close(b"HTTP/1.1", headers)
def test_expected_http_body_size():
# Expect: 100-continue
assert expected_http_body_size(
treq(headers=Headers(expect="100-continue", content_length="42"))
) == 0
# http://tools.ietf.org/html/rfc7230#section-3.3
assert expected_http_body_size(
treq(method=b"HEAD"),
tresp(headers=Headers(content_length="42"))
) == 0
assert expected_http_body_size(
treq(method=b"CONNECT"),
tresp()
) == 0
for code in (100, 204, 304):
assert expected_http_body_size(
treq(),
tresp(status_code=code)
) == 0
# chunked
assert expected_http_body_size(
treq(headers=Headers(transfer_encoding="chunked")),
) is None
# explicit length
for val in (b"foo", b"-7"):
with raises(HttpSyntaxException):
expected_http_body_size(
treq(headers=Headers(content_length=val))
)
assert expected_http_body_size(
treq(headers=Headers(content_length="42"))
) == 42
# no length
assert expected_http_body_size(
treq(headers=Headers())
) == 0
assert expected_http_body_size(
treq(headers=Headers()), tresp(headers=Headers())
) == -1
def test_get_first_line():
rfile = BytesIO(b"foo\r\nbar")
assert _get_first_line(rfile) == b"foo"
rfile = BytesIO(b"\r\nfoo\r\nbar")
assert _get_first_line(rfile) == b"foo"
with raises(HttpReadDisconnect):
rfile = BytesIO(b"")
_get_first_line(rfile)
with raises(HttpReadDisconnect):
rfile = Mock()
rfile.readline.side_effect = TcpDisconnect
_get_first_line(rfile)
def test_read_request_line():
def t(b):
return _read_request_line(BytesIO(b))
assert (t(b"GET / HTTP/1.1") ==
("relative", b"GET", None, None, None, b"/", b"HTTP/1.1"))
assert (t(b"OPTIONS * HTTP/1.1") ==
("relative", b"OPTIONS", None, None, None, b"*", b"HTTP/1.1"))
assert (t(b"CONNECT foo:42 HTTP/1.1") ==
("authority", b"CONNECT", None, b"foo", 42, None, b"HTTP/1.1"))
assert (t(b"GET http://foo:42/bar HTTP/1.1") ==
("absolute", b"GET", b"http", b"foo", 42, b"/bar", b"HTTP/1.1"))
with raises(HttpSyntaxException):
t(b"GET / WTF/1.1")
with raises(HttpSyntaxException):
t(b"this is not http")
with raises(HttpReadDisconnect):
t(b"")
def test_parse_authority_form():
assert _parse_authority_form(b"foo:42") == (b"foo", 42)
with raises(HttpSyntaxException):
_parse_authority_form(b"foo")
with raises(HttpSyntaxException):
_parse_authority_form(b"foo:bar")
with raises(HttpSyntaxException):
_parse_authority_form(b"foo:99999999")
with raises(HttpSyntaxException):
_parse_authority_form(b"f\x00oo:80")
def test_read_response_line():
def t(b):
return _read_response_line(BytesIO(b))
assert t(b"HTTP/1.1 200 OK") == (b"HTTP/1.1", 200, b"OK")
assert t(b"HTTP/1.1 200") == (b"HTTP/1.1", 200, b"")
# https://github.com/mitmproxy/mitmproxy/issues/784
assert t(b"HTTP/1.1 200 Non-Autoris\xc3\xa9") == (b"HTTP/1.1", 200, b"Non-Autoris\xc3\xa9")
with raises(HttpSyntaxException):
assert t(b"HTTP/1.1")
with raises(HttpSyntaxException):
t(b"HTTP/1.1 OK OK")
with raises(HttpSyntaxException):
t(b"WTF/1.1 200 OK")
with raises(HttpReadDisconnect):
t(b"")
def test_check_http_version():
_check_http_version(b"HTTP/0.9")
_check_http_version(b"HTTP/1.0")
_check_http_version(b"HTTP/1.1")
_check_http_version(b"HTTP/2.0")
with raises(HttpSyntaxException):
_check_http_version(b"WTF/1.0")
with raises(HttpSyntaxException):
_check_http_version(b"HTTP/1.10")
with raises(HttpSyntaxException):
_check_http_version(b"HTTP/1.b")
class TestReadHeaders:
@staticmethod
def _read(data):
return _read_headers(BytesIO(data))
def test_read_simple(self):
data = (
b"Header: one\r\n"
b"Header2: two\r\n"
b"\r\n"
)
headers = self._read(data)
assert headers.fields == ((b"Header", b"one"), (b"Header2", b"two"))
def test_read_multi(self):
data = (
b"Header: one\r\n"
b"Header: two\r\n"
b"\r\n"
)
headers = self._read(data)
assert headers.fields == ((b"Header", b"one"), (b"Header", b"two"))
def test_read_continued(self):
data = (
b"Header: one\r\n"
b"\ttwo\r\n"
b"Header2: three\r\n"
b"\r\n"
)
headers = self._read(data)
assert headers.fields == ((b"Header", b"one\r\n two"), (b"Header2", b"three"))
def test_read_continued_err(self):
data = b"\tfoo: bar\r\n"
with raises(HttpSyntaxException):
self._read(data)
def test_read_err(self):
data = b"foo"
with raises(HttpSyntaxException):
self._read(data)
def test_read_empty_name(self):
data = b":foo"
with raises(HttpSyntaxException):
self._read(data)
def test_read_empty_value(self):
data = b"bar:"
headers = self._read(data)
assert headers.fields == ((b"bar", b""),)
def test_read_chunked():
req = treq(content=None)
req.headers["Transfer-Encoding"] = "chunked"
data = b"1\r\na\r\n0\r\n"
with raises(HttpSyntaxException):
b"".join(_read_chunked(BytesIO(data)))
data = b"1\r\na\r\n0\r\n\r\n"
assert b"".join(_read_chunked(BytesIO(data))) == b"a"
data = b"\r\n\r\n1\r\na\r\n1\r\nb\r\n0\r\n\r\n"
assert b"".join(_read_chunked(BytesIO(data))) == b"ab"
data = b"\r\n"
with raises("closed prematurely"):
b"".join(_read_chunked(BytesIO(data)))
data = b"1\r\nfoo"
with raises("malformed chunked body"):
b"".join(_read_chunked(BytesIO(data)))
data = b"foo\r\nfoo"
with raises(HttpSyntaxException):
b"".join(_read_chunked(BytesIO(data)))
data = b"5\r\naaaaa\r\n0\r\n\r\n"
with raises("too large"):
b"".join(_read_chunked(BytesIO(data), limit=2))
|