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tests.py
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import unittest
from proxy import *
from proxy import bytes_, text_
class TestChunkParser(unittest.TestCase):
def setUp(self):
self.parser = ChunkParser()
def test_chunk_parse(self):
self.parser.parse(b''.join([
b'4\r\n',
b'Wiki\r\n',
b'5\r\n',
b'pedia\r\n',
b'E\r\n',
b' in\r\n\r\nchunks.\r\n',
b'0\r\n',
b'\r\n'
]))
self.assertEqual(self.parser.chunk, b'')
self.assertEqual(self.parser.size, None)
self.assertEqual(self.parser.body, b'Wikipedia in\r\n\r\nchunks.')
self.assertEqual(self.parser.state, CHUNK_PARSER_STATE_COMPLETE)
class TestHttpParser(unittest.TestCase):
def setUp(self):
self.parser = HttpParser()
def test_get_full_parse(self):
raw = text_(CRLF, encoding='utf-8').join([
'GET %s HTTP/1.1',
'Host: %s',
text_(CRLF, encoding='utf-8')
])
self.parser.parse(bytes_(raw % ('https://example.com/path/dir/?a=b&c=d#p=q', 'example.com')))
self.assertEqual(self.parser.build_url(), b'/path/dir/?a=b&c=d#p=q')
self.assertEqual(self.parser.method, b'GET')
self.assertEqual(self.parser.url.hostname, b'example.com')
self.assertEqual(self.parser.url.port, None)
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
self.assertDictContainsSubset({b'host': (b'Host', b'example.com')}, self.parser.headers)
self.assertEqual(bytes_(raw % ('/path/dir/?a=b&c=d#p=q', 'example.com')),
self.parser.build(del_headers=[b'host'], add_headers=[(b'Host', b'example.com')]))
def test_build_url_none(self):
self.assertEqual(self.parser.build_url(), b'/None')
def test_line_rcvd_to_rcving_headers_state_change(self):
self.parser.parse(b'GET http://localhost HTTP/1.1')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_INITIALIZED)
self.parser.parse(CRLF)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_LINE_RCVD)
self.parser.parse(CRLF)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
def test_get_partial_parse1(self):
self.parser.parse(CRLF.join([
b'GET http://localhost:8080 HTTP/1.1'
]))
self.assertEqual(self.parser.method, None)
self.assertEqual(self.parser.url, None)
self.assertEqual(self.parser.version, None)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_INITIALIZED)
self.parser.parse(CRLF)
self.assertEqual(self.parser.method, b'GET')
self.assertEqual(self.parser.url.hostname, b'localhost')
self.assertEqual(self.parser.url.port, 8080)
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_LINE_RCVD)
self.parser.parse(b'Host: localhost:8080')
self.assertDictEqual(self.parser.headers, dict())
self.assertEqual(self.parser.buffer, b'Host: localhost:8080')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_LINE_RCVD)
self.parser.parse(CRLF * 2)
self.assertDictContainsSubset({b'host': (b'Host', b'localhost:8080')}, self.parser.headers)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
def test_get_partial_parse2(self):
self.parser.parse(CRLF.join([
b'GET http://localhost:8080 HTTP/1.1',
b'Host: '
]))
self.assertEqual(self.parser.method, b'GET')
self.assertEqual(self.parser.url.hostname, b'localhost')
self.assertEqual(self.parser.url.port, 8080)
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertEqual(self.parser.buffer, b'Host: ')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_LINE_RCVD)
self.parser.parse(b'localhost:8080' + CRLF)
self.assertDictContainsSubset({b'host': (b'Host', b'localhost:8080')}, self.parser.headers)
self.assertEqual(self.parser.buffer, b'')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
self.parser.parse(b'Content-Type: text/plain' + CRLF)
self.assertEqual(self.parser.buffer, b'')
self.assertDictContainsSubset({b'content-type': (b'Content-Type', b'text/plain')}, self.parser.headers)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
self.parser.parse(CRLF)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
def test_post_full_parse(self):
raw = text_(CRLF).join([
'POST %s HTTP/1.1',
'Host: localhost',
'Content-Length: 7',
'Content-Type: application/x-www-form-urlencoded' + text_(CRLF, encoding='utf-8'),
'a=b&c=d'
])
self.parser.parse(bytes_(raw % 'http://localhost'))
self.assertEqual(self.parser.method, b'POST')
self.assertEqual(self.parser.url.hostname, b'localhost')
self.assertEqual(self.parser.url.port, None)
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertDictContainsSubset({b'content-type': (b'Content-Type', b'application/x-www-form-urlencoded')},
self.parser.headers)
self.assertDictContainsSubset({b'content-length': (b'Content-Length', b'7')}, self.parser.headers)
self.assertEqual(self.parser.body, b'a=b&c=d')
self.assertEqual(self.parser.buffer, b'')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
self.assertEqual(len(self.parser.build()), len(raw % '/'))
def test_post_partial_parse(self):
self.parser.parse(CRLF.join([
b'POST http://localhost HTTP/1.1',
b'Host: localhost',
b'Content-Length: 7',
b'Content-Type: application/x-www-form-urlencoded'
]))
self.assertEqual(self.parser.method, b'POST')
self.assertEqual(self.parser.url.hostname, b'localhost')
self.assertEqual(self.parser.url.port, None)
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
self.parser.parse(CRLF)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
self.parser.parse(CRLF)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_HEADERS_COMPLETE)
self.parser.parse(b'a=b')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_BODY)
self.assertEqual(self.parser.body, b'a=b')
self.assertEqual(self.parser.buffer, b'')
self.parser.parse(b'&c=d')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
self.assertEqual(self.parser.body, b'a=b&c=d')
self.assertEqual(self.parser.buffer, b'')
def test_response_parse(self):
self.parser.type = HTTP_RESPONSE_PARSER
self.parser.parse(b''.join([
b'HTTP/1.1 301 Moved Permanently\r\n',
b'Location: http://www.google.com/\r\n',
b'Content-Type: text/html; charset=UTF-8\r\n',
b'Date: Wed, 22 May 2013 14:07:29 GMT\r\n',
b'Expires: Fri, 21 Jun 2013 14:07:29 GMT\r\n',
b'Cache-Control: public, max-age=2592000\r\n',
b'Server: gws\r\n',
b'Content-Length: 219\r\n',
b'X-XSS-Protection: 1; mode=block\r\n',
b'X-Frame-Options: SAMEORIGIN\r\n\r\n',
b'<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">\n' +
b'<TITLE>301 Moved</TITLE></HEAD>',
b'<BODY>\n<H1>301 Moved</H1>\nThe document has moved\n' +
'<A HREF="http://www.google.com/">here</A>.\r\n</BODY></HTML>\r\n'
]))
self.assertEqual(self.parser.code, b'301')
self.assertEqual(self.parser.reason, b'Moved Permanently')
self.assertEqual(self.parser.version, b'HTTP/1.1')
self.assertEqual(self.parser.body,
b'<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">\n' +
'<TITLE>301 Moved</TITLE></HEAD><BODY>\n<H1>301 Moved</H1>\nThe document has moved\n' +
'<A HREF="http://www.google.com/">here</A>.\r\n</BODY></HTML>\r\n')
self.assertDictContainsSubset({b'content-length': (b'Content-Length', b'219')}, self.parser.headers)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
def test_response_partial_parse(self):
self.parser.type = HTTP_RESPONSE_PARSER
self.parser.parse(b''.join([
b'HTTP/1.1 301 Moved Permanently\r\n',
b'Location: http://www.google.com/\r\n',
b'Content-Type: text/html; charset=UTF-8\r\n',
b'Date: Wed, 22 May 2013 14:07:29 GMT\r\n',
b'Expires: Fri, 21 Jun 2013 14:07:29 GMT\r\n',
b'Cache-Control: public, max-age=2592000\r\n',
b'Server: gws\r\n',
b'Content-Length: 219\r\n',
b'X-XSS-Protection: 1; mode=block\r\n',
b'X-Frame-Options: SAMEORIGIN\r\n'
]))
self.assertDictContainsSubset({b'x-frame-options': (b'X-Frame-Options', b'SAMEORIGIN')}, self.parser.headers)
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_HEADERS)
self.parser.parse(b'\r\n')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_HEADERS_COMPLETE)
self.parser.parse(
b'<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">\n' +
'<TITLE>301 Moved</TITLE></HEAD>')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_RCVING_BODY)
self.parser.parse(
b'<BODY>\n<H1>301 Moved</H1>\nThe document has moved\n' +
'<A HREF="http://www.google.com/">here</A>.\r\n</BODY></HTML>\r\n')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
def test_chunked_response_parse(self):
self.parser.type = HTTP_RESPONSE_PARSER
self.parser.parse(b''.join([
b'HTTP/1.1 200 OK\r\n',
b'Content-Type: application/json\r\n',
b'Date: Wed, 22 May 2013 15:08:15 GMT\r\n',
b'Server: gunicorn/0.16.1\r\n',
b'transfer-encoding: chunked\r\n',
b'Connection: keep-alive\r\n\r\n',
b'4\r\n',
b'Wiki\r\n',
b'5\r\n',
b'pedia\r\n',
b'E\r\n',
b' in\r\n\r\nchunks.\r\n',
b'0\r\n',
b'\r\n'
]))
self.assertEqual(self.parser.body, b'Wikipedia in\r\n\r\nchunks.')
self.assertEqual(self.parser.state, HTTP_PARSER_STATE_COMPLETE)
class MockConnection(object):
def __init__(self, b=b''):
self.buffer = b
def recv(self, b=8192):
data = self.buffer[:b]
self.buffer = self.buffer[b:]
return data
def send(self, data):
return len(data)
def queue(self, data):
self.buffer += data
class TestProxy(unittest.TestCase):
def setUp(self):
self._conn = MockConnection()
self._addr = ('127.0.0.1', 54382)
self.proxy = Proxy(Client(self._conn, self._addr))
def test_http_get(self):
self.proxy.client.conn.queue(b'GET http://httpbin.org/get HTTP/1.1' + CRLF)
self.proxy._process_request(self.proxy.client.recv())
self.assertNotEqual(self.proxy.request.state, HTTP_PARSER_STATE_COMPLETE)
self.proxy.client.conn.queue(CRLF.join([
b'User-Agent: curl/7.27.0',
b'Host: httpbin.org',
b'Accept: */*',
b'Proxy-Connection: Keep-Alive',
CRLF
]))
self.proxy._process_request(self.proxy.client.recv())
self.assertEqual(self.proxy.request.state, HTTP_PARSER_STATE_COMPLETE)
self.assertEqual(self.proxy.server.addr, (b'httpbin.org', 80))
self.proxy.server.flush()
self.assertEqual(self.proxy.server.buffer_size(), 0)
data = self.proxy.server.recv()
while data:
self.proxy._process_response(data)
if self.proxy.response.state == HTTP_PARSER_STATE_COMPLETE:
break
data = self.proxy.server.recv()
self.assertEqual(self.proxy.response.state, HTTP_PARSER_STATE_COMPLETE)
self.assertEqual(int(self.proxy.response.code), 200)
def test_https_get(self):
self.proxy.client.conn.queue(CRLF.join([
b'CONNECT httpbin.org:80 HTTP/1.1',
b'Host: httpbin.org:80',
b'User-Agent: curl/7.27.0',
b'Proxy-Connection: Keep-Alive',
CRLF
]))
self.proxy._process_request(self.proxy.client.recv())
self.assertFalse(self.proxy.server is None)
self.assertEqual(self.proxy.client.buffer, self.proxy.connection_established_pkt)
parser = HttpParser(HTTP_RESPONSE_PARSER)
parser.parse(self.proxy.client.buffer)
self.assertEqual(parser.state, HTTP_PARSER_STATE_HEADERS_COMPLETE)
self.assertEqual(int(parser.code), 200)
self.proxy.client.flush()
self.assertEqual(self.proxy.client.buffer_size(), 0)
self.proxy.client.conn.queue(CRLF.join([
b'GET /user-agent HTTP/1.1',
b'Host: httpbin.org',
b'User-Agent: curl/7.27.0',
CRLF
]))
self.proxy._process_request(self.proxy.client.recv())
self.proxy.server.flush()
self.assertEqual(self.proxy.server.buffer_size(), 0)
parser = HttpParser(HTTP_RESPONSE_PARSER)
data = self.proxy.server.recv()
while data:
parser.parse(data)
if parser.state == HTTP_PARSER_STATE_COMPLETE:
break
data = self.proxy.server.recv()
self.assertEqual(parser.state, HTTP_PARSER_STATE_COMPLETE)
self.assertEqual(int(parser.code), 200)
def test_proxy_connection_failed(self):
with self.assertRaises(ProxyConnectionFailed):
self.proxy._process_request(CRLF.join([
b'GET http://unknown.domain HTTP/1.1',
b'Host: unknown.domain',
CRLF
]))
if __name__ == '__main__':
unittest.main()