/
capture_http.py
269 lines (202 loc) · 7.98 KB
/
capture_http.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
import threading
from io import BytesIO
from six.moves import http_client as httplib
from contextlib import contextmanager
from array import array
from warcio.utils import to_native_str, BUFF_SIZE, open
from warcio.warcwriter import WARCWriter, BufferWARCWriter
from tempfile import SpooledTemporaryFile
# ============================================================================
orig_connection = httplib.HTTPConnection
# ============================================================================
class RecordingStream(object):
def __init__(self, fp, recorder):
self.fp = fp
self.recorder = recorder
self.recorder.set_remote_ip(self._get_remote_ip())
def _get_remote_ip(self):
try:
fp = self.fp
# for python 3, need to get 'raw' fp
if hasattr(fp, 'raw'): #pragma: no cover
fp = fp.raw
socket = fp._sock
# wrapped ssl socket
if hasattr(socket, 'socket'):
socket = socket.socket
return socket.getpeername()[0]
except Exception: #pragma: no cover
return None
# Used in PY2 Only
def read(self, amt=None): #pragma: no cover
buff = self.fp.read(amt)
self.recorder.write_response(buff)
return buff
# Used in PY3 Only
def readinto(self, buff): #pragma: no cover
res = self.fp.readinto(buff)
self.recorder.write_response(buff)
return res
def readline(self, maxlen=-1):
line = self.fp.readline(maxlen)
self.recorder.write_response(line)
return line
def close(self):
self.recorder.done()
if self.fp:
return self.fp.close()
def flush(self):
return self.fp.flush()
# ============================================================================
class RecordingHTTPResponse(httplib.HTTPResponse):
def __init__(self, recorder, *args, **kwargs):
httplib.HTTPResponse.__init__(self, *args, **kwargs)
self.fp = RecordingStream(self.fp, recorder)
# ============================================================================
class RecordingHTTPConnection(httplib.HTTPConnection):
local = threading.local()
def __init__(self, *args, **kwargs):
orig_connection.__init__(self, *args, **kwargs)
if hasattr(self.local, 'recorder'):
self.recorder = self.local.recorder
else:
self.recorder = None
def make_recording_response(*args, **kwargs):
return RecordingHTTPResponse(self.recorder, *args, **kwargs)
if self.recorder:
self.response_class = make_recording_response
def send(self, data):
if not self.recorder:
orig_connection.send(self, data)
return
def send_request(buff):
self.recorder.extract_url(buff, self.host, self.port, self.default_port)
orig_connection.send(self, buff)
self.recorder.write_request(buff)
# if sending request body as stream
# (supported via httplib but seems unused via higher-level apis)
if hasattr(data, 'read') and not isinstance(data, array): #pragma: no cover
while True:
buff = data.read(BUFF_SIZE)
if not buff:
break
send_request(buff)
else:
send_request(data)
def _tunnel(self, *args, **kwargs):
if self.recorder:
self.recorder.start_tunnel()
return orig_connection._tunnel(self, *args, **kwargs)
def putrequest(self, *args, **kwargs):
if self.recorder:
self.recorder.start()
return orig_connection.putrequest(self, *args, **kwargs)
# ============================================================================
class RequestRecorder(object):
def __init__(self, writer, filter_func=None, record_ip=True):
self.writer = writer
self.filter_func = filter_func
self.request_out = None
self.response_out = None
self.url = None
self.connect_host = self.connect_port = None
self.started_req = False
self.first_line_read = False
self.lock = threading.Lock()
self.warc_headers = {}
self.record_ip = record_ip
def start_tunnel(self):
self.connect_host = self.connect_port = None
self.started_req = False
self.first_line_read = False
def start(self):
self.request_out = self._create_buffer()
self.response_out = self._create_buffer()
self.url = None
self.started_req = True
self.first_line_read = False
def _create_buffer(self):
return SpooledTemporaryFile(BUFF_SIZE)
def set_remote_ip(self, remote_ip):
if self.record_ip and remote_ip: #pragma: no cover
self.warc_headers['WARC-IP-Address'] = remote_ip
def write_request(self, buff):
if self.started_req:
self.request_out.write(buff)
def write_response(self, buff):
if self.started_req:
self.response_out.write(buff)
def _create_record(self, out, record_type):
length = out.tell()
out.seek(0)
return self.writer.create_warc_record(
warc_headers_dict=self.warc_headers,
uri=self.url,
record_type=record_type,
payload=out,
length=length)
def done(self):
if not self.started_req:
return
try:
request = self._create_record(self.request_out, 'request')
response = self._create_record(self.response_out, 'response')
if self.filter_func:
request, response = self.filter_func(request, response, self)
if not request or not response:
return
with self.lock:
self.writer.write_request_response_pair(request, response)
finally:
self.request_out.close()
self.response_out.close()
def extract_url(self, data, host, port, default_port):
if self.first_line_read:
return
self.first_line_read = True
buff = BytesIO(data)
line = to_native_str(buff.readline(), 'latin-1')
parts = line.split(' ', 2)
verb = parts[0]
path = parts[1]
if verb == "CONNECT":
parts = path.split(":", 1)
self.connect_host = parts[0]
self.connect_port = int(parts[1]) if len(parts) > 1 else default_port
self.warc_headers['WARC-Proxy-Host'] = "https://{0}:{1}".format(host, port)
return
if self.connect_host:
host = self.connect_host
if self.connect_port:
port = self.connect_port
if path.startswith(('http:', 'https:')):
self.warc_headers['WARC-Proxy-Host'] = "http://{0}:{1}".format(host, port)
self.url = path
return
scheme = 'https' if default_port == 443 else 'http'
self.url = scheme + '://' + host
if port != default_port:
self.url += ':' + str(port)
self.url += path
# ============================================================================
httplib.HTTPConnection = RecordingHTTPConnection
# ============================================================================
@contextmanager
def capture_http(warc_writer=None, filter_func=None, append=True,
record_ip=True, **kwargs):
out = None
if warc_writer == None:
if 'gzip' not in kwargs:
kwargs['gzip'] = False
warc_writer = BufferWARCWriter(**kwargs)
if isinstance(warc_writer, str):
out = open(warc_writer, 'ab' if append else 'xb')
warc_writer = WARCWriter(out, **kwargs)
try:
recorder = RequestRecorder(warc_writer, filter_func, record_ip=record_ip)
RecordingHTTPConnection.local.recorder = recorder
yield warc_writer
finally:
RecordingHTTPConnection.local.recorder = None
if out:
out.close()