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Merge branch 'master' into qa

Browse Source 
* master:
  bump version after merge
  include warcprox host and port in filenames
  replace pencil drawing with nice diagram by James
  fix bug
  readable stack traces, thanks py.test
  --quiet means NOTICE level logging
  tweak max threads option handling
  set socket timeout for tor .onion fetching
  WARCPROX_WRITE_RECORD respect buffer size setting
  --help-hidden for help on hidden args
  half-baked readme section on warcprox architecture
  bump dev version number after merge
  restore 80 column lines
  Copy edits updated
  Copy edits
  update cryptography dep version
  use SpooledTemporaryFile for WARCPROX_WRITE_RECORD
  Apply blackout on when dedup URL equals request URL
  New --blackout-period option to skip writing redundant revisits to WARC
This commit is contained in:
Noah Levitt 2018-09-28 11:12:18 -07:00
commit eab9181129
16 changed files with 789 additions and 185 deletions
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8
.travis.yml
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@ -50,10 +50,10 @@ before_script:
- docker ps
script:
- py.test -v tests
- py.test -v --rethinkdb-dedup-url=rethinkdb://localhost/test1/dedup tests
- py.test -v --rethinkdb-big-table-url=rethinkdb://localhost/test2/captures tests
- py.test -v --rethinkdb-trough-db-url=rethinkdb://localhost/trough_configuration tests
- py.test -v --tb=native tests
- py.test -v --tb=native --rethinkdb-dedup-url=rethinkdb://localhost/test1/dedup tests
- py.test -v --tb=native --rethinkdb-big-table-url=rethinkdb://localhost/test2/captures tests
- py.test -v --tb=native --rethinkdb-trough-db-url=rethinkdb://localhost/trough_configuration tests
after_script:
- ps ww -fHe

163
README.rst
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@ -3,22 +3,19 @@ Warcprox - WARC writing MITM HTTP/S proxy
.. image:: https://travis-ci.org/internetarchive/warcprox.svg?branch=master
:target: https://travis-ci.org/internetarchive/warcprox
Warcprox is a tool for archiving the web. It is an http proxy that stores its
traffic to disk in `WARC
<https://iipc.github.io/warc-specifications/specifications/warc-format/warc-1.1/>`_
format. Warcprox captures encrypted https traffic by using the
`"man-in-the-middle" <https://en.wikipedia.org/wiki/Man-in-the-middle_attack>`_
technique (see the `Man-in-the-middle`_ section for more info).
Warcprox is an HTTP proxy designed for web archiving applications. When used in
parallel with `brozzler <https://github.com/internetarchive/brozzler>`_ it
supports a comprehensive, modern, and distributed archival web capture system.
Warcprox stores its traffic to disk in the `Web ARChive (WARC) file format
<https://iipc.github.io/warc-specifications/specifications/warc-format/warc-1.1/>`_,
which may then be accessed with web archival replay software like `OpenWayback
<https://github.com/iipc/openwayback>`_ and `pywb
<https://github.com/webrecorder/pywb>`_. It captures encrypted HTTPS traffic by
using the "man-in-the-middle" technique (see the `Man-in-the-middle`_ section
for more info).
The web pages that warcprox stores in WARC files can be played back using
software like `OpenWayback <https://github.com/iipc/openwayback>`_ or `pywb
<https://github.com/webrecorder/pywb>`_. Warcprox has been developed in
parallel with `brozzler <https://github.com/internetarchive/brozzler>`_ and
together they make a comprehensive modern distributed archival web crawling
system.
Warcprox was originally based on the excellent and simple pymiproxy by Nadeem
Douba. https://github.com/allfro/pymiproxy
Warcprox was originally based on `pymiproxy
<https://github.com/allfro/pymiproxy>`_ by Nadeem Douba.
.. contents::
@ -43,68 +40,72 @@ Try ``warcprox --help`` for documentation on command line options.
Man-in-the-middle
=================
Normally, http proxies can't read https traffic, because it's encrypted. The
browser uses the http ``CONNECT`` method to establish a tunnel through the
proxy, and the proxy merely routes raw bytes between the client and server.
Since the bytes are encrypted, the proxy can't make sense of the information
it's proxying. This nonsensical encrypted data would not be very useful to
archive.
Normally, HTTP proxies can't read encrypted HTTPS traffic. The browser uses the
HTTP ``CONNECT`` method to establish a tunnel through the proxy, and the proxy
merely routes raw bytes between the client and server. Since the bytes are
encrypted, the proxy can't make sense of the information that it proxies. This
nonsensical encrypted data is not typically useful for web archiving purposes.
In order to capture https traffic, warcprox acts as a "man-in-the-middle"
In order to capture HTTPS traffic, warcprox acts as a "man-in-the-middle"
(MITM). When it receives a ``CONNECT`` directive from a client, it generates a
public key certificate for the requested site, presents to the client, and
proceeds to establish an encrypted connection with the client. Then it makes a
separate, normal https connection to the remote site. It decrypts, archives,
proceeds to establish an encrypted connection with the client. It then makes a
separate, normal HTTPS connection to the remote site. It decrypts, archives,
and re-encrypts traffic in both directions.
Although "man-in-the-middle" is often paired with "attack", there is nothing
malicious about what warcprox is doing. If you configure an instance of
warcprox as your browser's http proxy, you will see lots of certificate
warnings, since none of the certificates will be signed by trusted authorities.
To use warcprox effectively the client needs to disable certificate
verification, or add the CA cert generated by warcprox as a trusted authority.
(If you do this in your browser, make sure you undo it when you're done using
warcprox!)
Configuring a warcprox instance as a browser’s HTTP proxy will result in
security certificate warnings because none of the certificates will be signed
by trusted authorities. However, there is nothing malicious about warcprox
functions. To use warcprox effectively, the client needs to disable certificate
verification or add the CA certificate generated by warcprox as a trusted
authority. When using the latter, remember to undo this change when finished
using warcprox.
API
===
For interacting with a running instance of warcprox.
The warcprox API may be used to retrieve information from and interact with a
running warcprox instance, including:
* ``/status`` url
* ``WARCPROX_WRITE_RECORD`` http method
* ``Warcprox-Meta`` http request header and response header
* Retrieving status information via ``/status`` URL
* Writing WARC records via ``WARCPROX_WRITE_RECORD`` HTTP method
* Controlling warcprox settings via the ``Warcprox-Meta`` HTTP header
See `<api.rst>`_.
For warcprox API documentation, see: `<api.rst>`_.
Deduplication
=============
Warcprox avoids archiving redundant content by "deduplicating" it. The process
for deduplication works similarly to heritrix and other web archiving tools.
for deduplication works similarly to deduplication by `Heritrix
<https://github.com/internetarchive/heritrix3>`_ and other web archiving tools:
1. while fetching url, calculate payload content digest (typically sha1)
2. look up digest in deduplication database (warcprox supports a few different
ones)
3. if found, write warc ``revisit`` record referencing the url and capture time
1. While fetching URL, calculate payload content digest (typically SHA1
checksum value)
2. Look up digest in deduplication database (warcprox currently supports
`sqlite <https://sqlite.org/>`_ by default, `rethinkdb
<https://github.com/rethinkdb/rethinkdb>`_ with two different schemas, and
`trough <https://github.com/internetarchive/trough>`_)
3. If found, write warc ``revisit`` record referencing the url and capture time
of the previous capture
4. else (if not found),
4. If not found,
a. write warc ``response`` record with full payload
b. store entry in deduplication database
a. Write ``response`` record with full payload
b. Store new entry in deduplication database
The dedup database is partitioned into different "buckets". Urls are
The deduplication database is partitioned into different "buckets". URLs are
deduplicated only against other captures in the same bucket. If specified, the
``dedup-bucket`` field of the ``Warcprox-Meta`` http request header determines
the bucket, otherwise the default bucket is used.
``dedup-bucket`` field of the `Warcprox-Meta HTTP request header
<api.rst#warcprox-meta-http-request-header>`_ determines the bucket. Otherwise,
the default bucket is used.
Deduplication can be disabled entirely by starting warcprox with the argument
``--dedup-db-file=/dev/null``.
Statistics
==========
Warcprox keeps some crawl statistics and stores them in sqlite or rethinkdb.
These are consulted for enforcing ``limits`` and ``soft-limits`` (see
`<api.rst#warcprox-meta-fields>`_), and can also be consulted by other
processes outside of warcprox, for reporting etc.
Warcprox stores some crawl statistics to sqlite or rethinkdb. These are
consulted for enforcing ``limits`` and ``soft-limits`` (see `Warcprox-Meta
fields <api.rst#warcprox-meta-fields>`_), and can also be consulted by other
processes outside of warcprox, such as for crawl job reporting.
Statistics are grouped by "bucket". Every capture is counted as part of the
``__all__`` bucket. Other buckets can be specified in the ``Warcprox-Meta``
@ -113,21 +114,20 @@ request header. The fallback bucket in case none is specified is called
Within each bucket are three sub-buckets:
* ``new`` - tallies captures for which a complete record (usually a ``response``
record) was written to warc
* ``new`` - tallies captures for which a complete record (usually a
``response`` record) was written to a WARC file
* ``revisit`` - tallies captures for which a ``revisit`` record was written to
warc
* ``total`` - includes all urls processed, even those not written to warc (so the
numbers may be greater than new + revisit)
a WARC file
* ``total`` - includes all URLs processed, even those not written to a WARC
file, and so may be greater than the sum of new and revisit records
Within each of these sub-buckets we keep two statistics:
Within each of these sub-buckets, warcprox generates two kinds of statistics:
* ``urls`` - simple count of urls
* ``wire_bytes`` - sum of bytes received over the wire, including http headers,
from the remote server for each url
* ``urls`` - simple count of URLs
* ``wire_bytes`` - sum of bytes received over the wire from the remote server
for each URL, including HTTP headers
For historical reasons, in sqlite, the default store, statistics are kept as
json blobs::
For historical reasons, the default sqlite store keeps statistics as JSON blobs::
sqlite> select * from buckets_of_stats;
bucket stats
@ -139,14 +139,37 @@ Plugins
=======
Warcprox supports a limited notion of plugins by way of the ``--plugin``
command line argument. Plugin classes are loaded from the regular python module
search path. They will be instantiated with one argument, a
``warcprox.Options``, which holds the values of all the command line arguments.
Legacy plugins with constructors that take no arguments are also supported.
Plugins should either have a method ``notify(self, recorded_url, records)`` or
should subclass ``warcprox.BasePostfetchProcessor``. More than one plugin can
be configured by specifying ``--plugin`` multiples times.
search path. They are instantiated with one argument that contains the values
of all command line arguments, ``warcprox.Options``. Legacy plugins with
constructors that take no arguments are also supported. Plugins should either
have a method ``notify(self, recorded_url, records)`` or should subclass
``warcprox.BasePostfetchProcessor``. More than one plugin can be configured by
specifying ``--plugin`` multiples times.
`A minimal example <https://github.com/internetarchive/warcprox/blob/318405e795ac0ab8760988a1a482cf0a17697148/warcprox/__init__.py#L165>`__
See a minimal example `here
<https://github.com/internetarchive/warcprox/blob/318405e795ac0ab8760988a1a482cf0a17697148/warcprox/__init__.py#L165>`__.
Architecture
============
.. image:: arch.svg
Warcprox is multithreaded. It has pool of http proxy threads (100 by default).
When handling a request, a proxy thread records data from the remote server to
an in-memory buffer that spills over to disk if necessary (after 512k by
default), while it streams the data to the proxy client. Once the HTTP
transaction is complete, it puts the recorded URL in a thread-safe queue, to be
picked up by the first processor in the postfetch chain.
The postfetch chain normally includes processors for loading deduplication
information, writing records to the WARC, saving deduplication information, and
updating statistics. The exact set of processors in the chain depends on
command line arguments; for example, plugins specified with ``--plugin`` are
processors in the postfetch chain. Each postfetch processor has its own thread
or threads. Thus the processors are able to run in parallel, independent of one
another. This design also enables them to process URLs in batch. For example,
the statistics processor gathers statistics for up to 10 seconds or 500 URLs,
whichever comes first, then updates the statistics database with just a few
queries.
License
=======

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Side by Side

After

Width:  |  Height:  |  Size: 56 KiB

2
benchmarks/run-benchmarks.py
View File

@ -194,7 +194,7 @@ if __name__ == '__main__':
args = arg_parser.parse_args(args=sys.argv[1:])
if args.trace:
loglevel = warcprox.TRACE
loglevel = logging.TRACE
elif args.verbose:
loglevel = logging.DEBUG
else:

10
setup.py
View File

@ -25,13 +25,13 @@ import setuptools
deps = [
'certauth==1.1.6',
'warctools',
'warctools>=4.10.0',
'urlcanon>=0.1.dev16',
'doublethink>=0.2.0.dev87',
'urllib3',
'urllib3>=1.23',
'requests>=2.0.1',
'PySocks',
'cryptography!=2.1.1', # 2.1.1 installation is failing on ubuntu
'PySocks>=1.6.8',
'cryptography>=2.3',
]
try:
import concurrent.futures
@ -40,7 +40,7 @@ except:
setuptools.setup(
name='warcprox',
version='2.4b3.dev180',
version='2.4b3.dev184',
description='WARC writing MITM HTTP/S proxy',
url='https://github.com/internetarchive/warcprox',
author='Noah Levitt',

2
tests/test_ensure_rethinkdb_tables.py
View File

@ -30,7 +30,7 @@ import logging
import sys
logging.basicConfig(
stream=sys.stdout, level=warcprox.TRACE,
stream=sys.stdout, level=logging.TRACE,
format='%(asctime)s %(process)d %(levelname)s %(threadName)s '
'%(name)s.%(funcName)s(%(filename)s:%(lineno)d) %(message)s')

36
tests/test_warcprox.py
View File

@ -90,8 +90,7 @@ def _send(self, data):
# http_client.HTTPConnection.send = _send
logging.basicConfig(
# stream=sys.stdout, level=logging.DEBUG, # level=warcprox.TRACE,
stream=sys.stdout, level=warcprox.TRACE,
stream=sys.stdout, level=logging.TRACE,
format='%(asctime)s %(process)d %(levelname)s %(threadName)s '
'%(name)s.%(funcName)s(%(filename)s:%(lineno)d) %(message)s')
logging.getLogger("requests.packages.urllib3").setLevel(logging.WARN)
@ -1718,8 +1717,14 @@ def test_slash_in_warc_prefix(warcprox_, http_daemon, archiving_proxies):
def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
urls_before = warcprox_.proxy.running_stats.urls
hostname = socket.gethostname().split('.', 1)[0]
port = warcprox_.proxy.server_port
default_crawl_log_path = os.path.join(
warcprox_.options.crawl_log_dir,
'crawl-%s-%s.log' % (hostname, port))
try:
os.unlink(os.path.join(warcprox_.options.crawl_log_dir, 'crawl.log'))
os.unlink(default_crawl_log_path)
except:
pass
@ -1740,14 +1745,14 @@ def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
# wait for postfetch chain
wait(lambda: warcprox_.proxy.running_stats.urls - urls_before == 2)
file = os.path.join(warcprox_.options.crawl_log_dir, 'test_crawl_log_1.log')
file = os.path.join(
warcprox_.options.crawl_log_dir,
'test_crawl_log_1-%s-%s.log' % (hostname, port))
assert os.path.exists(file)
assert os.stat(file).st_size > 0
assert os.path.exists(os.path.join(
warcprox_.options.crawl_log_dir, 'crawl.log'))
assert os.path.exists(default_crawl_log_path)
crawl_log = open(os.path.join(
warcprox_.options.crawl_log_dir, 'crawl.log'), 'rb').read()
crawl_log = open(default_crawl_log_path, 'rb').read()
# tests will fail in year 3000 :)
assert re.match(b'\A2[^\n]+\n\Z', crawl_log)
assert crawl_log[24:31] == b' 200 '
@ -1768,8 +1773,7 @@ def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
'contentSize', 'warcFilename', 'warcFileOffset'}
assert extra_info['contentSize'] == 145
crawl_log_1 = open(os.path.join(
warcprox_.options.crawl_log_dir, 'test_crawl_log_1.log'), 'rb').read()
crawl_log_1 = open(file, 'rb').read()
assert re.match(b'\A2[^\n]+\n\Z', crawl_log_1)
assert crawl_log_1[24:31] == b' 200 '
assert crawl_log_1[31:42] == b' 54 '
@ -1800,7 +1804,9 @@ def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
# wait for postfetch chain
wait(lambda: warcprox_.proxy.running_stats.urls - urls_before == 3)
file = os.path.join(warcprox_.options.crawl_log_dir, 'test_crawl_log_2.log')
file = os.path.join(
warcprox_.options.crawl_log_dir,
'test_crawl_log_2-%s-%s.log' % (hostname, port))
assert os.path.exists(file)
assert os.stat(file).st_size > 0
@ -1833,7 +1839,9 @@ def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
# wait for postfetch chain
wait(lambda: warcprox_.proxy.running_stats.urls - urls_before == 4)
file = os.path.join(warcprox_.options.crawl_log_dir, 'test_crawl_log_3.log')
file = os.path.join(
warcprox_.options.crawl_log_dir,
'test_crawl_log_3-%s-%s.log' % (hostname, port))
assert os.path.exists(file)
crawl_log_3 = open(file, 'rb').read()
@ -1871,7 +1879,9 @@ def test_crawl_log(warcprox_, http_daemon, archiving_proxies):
# wait for postfetch chain
wait(lambda: warcprox_.proxy.running_stats.urls - urls_before == 5)
file = os.path.join(warcprox_.options.crawl_log_dir, 'test_crawl_log_4.log')
file = os.path.join(
warcprox_.options.crawl_log_dir,
'test_crawl_log_4-%s-%s.log' % (hostname, port))
assert os.path.exists(file)
crawl_log_4 = open(file, 'rb').read()

44
tests/test_writer.py
View File

@ -22,7 +22,7 @@ USA.
import os
import fcntl
from multiprocessing import Process, Queue
from datetime import datetime
from datetime import datetime, timedelta
import pytest
import re
from warcprox.mitmproxy import ProxyingRecorder
@ -34,6 +34,7 @@ import warcprox
import io
import tempfile
import logging
import hashlib
def lock_file(queue, filename):
"""Try to lock file and return 1 if successful, else return 0.
@ -58,7 +59,7 @@ def test_warc_writer_locking(tmpdir):
url='http://example.com', content_type='text/plain', status=200,
client_ip='127.0.0.2', request_data=b'abc',
response_recorder=recorder, remote_ip='127.0.0.3',
timestamp=datetime.utcnow())
timestamp=datetime.utcnow(), payload_digest=hashlib.sha1())
dirname = os.path.dirname(str(tmpdir.mkdir('test-warc-writer')))
wwriter = WarcWriter(Options(
@ -129,7 +130,7 @@ def test_special_dont_write_prefix():
wwt.join()
wwt = warcprox.writerthread.WarcWriterProcessor(
Options(writer_threads=1))
Options(writer_threads=1, blackout_period=60, prefix='foo'))
wwt.inq = warcprox.TimestampedQueue(maxsize=1)
wwt.outq = warcprox.TimestampedQueue(maxsize=1)
try:
@ -158,6 +159,41 @@ def test_special_dont_write_prefix():
recorded_url = wwt.outq.get(timeout=10)
assert not recorded_url.warc_records
assert wwt.outq.empty()
# test blackout_period option. Write first revisit record because
# its outside the blackout_period (60). Do not write the second
# because its inside the blackout_period.
recorder = ProxyingRecorder(io.BytesIO(b'test1'), None)
recorder.read()
old = datetime.utcnow() - timedelta(0, 3600)
ru = RecordedUrl(
url='http://example.com/dup',
content_type='text/plain',
status=200, client_ip='127.0.0.2', request_data=b'abc',
response_recorder=recorder, remote_ip='127.0.0.3',
timestamp=datetime.utcnow(),
payload_digest=recorder.block_digest)
ru.dedup_info = dict(id=b'1', url=b'http://example.com/dup',
date=old.strftime('%Y-%m-%dT%H:%M:%SZ').encode('utf-8'))
wwt.inq.put(ru)
recorded_url = wwt.outq.get(timeout=10)
recorder = ProxyingRecorder(io.BytesIO(b'test2'), None)
recorder.read()
recent = datetime.utcnow() - timedelta(0, 5)
ru = RecordedUrl(
url='http://example.com/dup', content_type='text/plain',
status=200, client_ip='127.0.0.2', request_data=b'abc',
response_recorder=recorder, remote_ip='127.0.0.3',
timestamp=datetime.utcnow(),
payload_digest=recorder.block_digest)
ru.dedup_info = dict(id=b'2', url=b'http://example.com/dup',
date=recent.strftime('%Y-%m-%dT%H:%M:%SZ').encode('utf-8'))
wwt.inq.put(ru)
assert recorded_url.warc_records
recorded_url = wwt.outq.get(timeout=10)
assert not recorded_url.warc_records
assert wwt.outq.empty()
finally:
wwt.stop.set()
wwt.join()
@ -212,7 +248,7 @@ def test_warc_writer_filename(tmpdir):
url='http://example.com', content_type='text/plain', status=200,
client_ip='127.0.0.2', request_data=b'abc',
response_recorder=recorder, remote_ip='127.0.0.3',
timestamp=datetime.utcnow())
timestamp=datetime.utcnow(), payload_digest=hashlib.sha1())
dirname = os.path.dirname(str(tmpdir.mkdir('test-warc-writer')))
wwriter = WarcWriter(Options(directory=dirname, prefix='foo',

16
warcprox/__init__.py
View File

@ -266,21 +266,21 @@ def timestamp14():
return '{:%Y%m%d%H%M%S}'.format(now)
# monkey-patch log levels TRACE and NOTICE
TRACE = 5
logging.TRACE = (logging.NOTSET + logging.DEBUG) // 2
def _logger_trace(self, msg, *args, **kwargs):
if self.isEnabledFor(TRACE):
self._log(TRACE, msg, args, **kwargs)
if self.isEnabledFor(logging.TRACE):
self._log(logging.TRACE, msg, args, **kwargs)
logging.Logger.trace = _logger_trace
logging.trace = logging.root.trace
logging.addLevelName(TRACE, 'TRACE')
logging.addLevelName(logging.TRACE, 'TRACE')
NOTICE = (logging.INFO + logging.WARN) // 2
logging.NOTICE = (logging.INFO + logging.WARN) // 2
def _logger_notice(self, msg, *args, **kwargs):
if self.isEnabledFor(NOTICE):
self._log(NOTICE, msg, args, **kwargs)
if self.isEnabledFor(logging.NOTICE):
self._log(logging.NOTICE, msg, args, **kwargs)
logging.Logger.notice = _logger_notice
logging.notice = logging.root.notice
logging.addLevelName(NOTICE, 'NOTICE')
logging.addLevelName(logging.NOTICE, 'NOTICE')
import warcprox.controller as controller
import warcprox.playback as playback

4
warcprox/controller.py
View File

@ -299,9 +299,7 @@ class WarcproxController(object):
status_info.update(self.proxy.status())
self.status_info = self.service_registry.heartbeat(status_info)
self.logger.log(
warcprox.TRACE, "status in service registry: %s",
self.status_info)
self.logger.trace('status in service registry: %s', self.status_info)
def start(self):
with self._start_stop_lock:

15
warcprox/crawl_log.py
View File

@ -24,11 +24,15 @@ import datetime
import json
import os
import warcprox
import socket
class CrawlLogger(object):
def __init__(self, dir_, options=warcprox.Options()):
self.dir = dir_
self.options = options
self.hostname = socket.gethostname().split('.', 1)[0]
def start(self):
if not os.path.exists(self.dir):
logging.info('creating directory %r', self.dir)
os.mkdir(self.dir)
@ -49,7 +53,7 @@ class CrawlLogger(object):
self.options.base32)
else:
# WARCPROX_WRITE_RECORD request
content_length = len(recorded_url.request_data)
content_length = int(records[0].get_header(b'Content-Length'))
payload_digest = records[0].get_header(b'WARC-Payload-Digest')
fields = [
'{:%Y-%m-%dT%H:%M:%S}.{:03d}Z'.format(now, now.microsecond//1000),
@ -77,12 +81,11 @@ class CrawlLogger(object):
pass
line = b' '.join(fields) + b'\n'
if 'warc-prefix' in recorded_url.warcprox_meta:
filename = '%s.log' % recorded_url.warcprox_meta['warc-prefix']
else:
filename = 'crawl.log'
prefix = recorded_url.warcprox_meta.get('warc-prefix', 'crawl')
filename = '%s-%s-%s.log' % (
prefix, self.hostname, self.options.server_port)
crawl_log_path = os.path.join(self.dir, filename)
with open(crawl_log_path, 'ab') as f:
f.write(line)

110
warcprox/main.py
View File

@ -60,10 +60,23 @@ class BetterArgumentDefaultsHelpFormatter(
else:
return argparse.ArgumentDefaultsHelpFormatter._get_help_string(self, action)
def _build_arg_parser(prog='warcprox'):
def _build_arg_parser(prog='warcprox', show_hidden=False):
if show_hidden:
def suppress(msg):
return msg
else:
def suppress(msg):
return argparse.SUPPRESS
arg_parser = argparse.ArgumentParser(prog=prog,
description='warcprox - WARC writing MITM HTTP/S proxy',
formatter_class=BetterArgumentDefaultsHelpFormatter)
hidden = arg_parser.add_argument_group('hidden options')
arg_parser.add_argument(
'--help-hidden', action='help', default=argparse.SUPPRESS,
help='show help message, including help on hidden options, and exit')
arg_parser.add_argument('-p', '--port', dest='port', default='8000',
type=int, help='port to listen on')
arg_parser.add_argument('-b', '--address', dest='address',
@ -81,8 +94,12 @@ def _build_arg_parser(prog='warcprox'):
help='define custom WARC filename with variables {prefix}, {timestamp14}, {timestamp17}, {serialno}, {randomtoken}, {hostname}, {shorthostname}')
arg_parser.add_argument('-z', '--gzip', dest='gzip', action='store_true',
help='write gzip-compressed warc records')
arg_parser.add_argument('--no-warc-open-suffix', dest='no_warc_open_suffix',
default=False, action='store_true', help=argparse.SUPPRESS)
hidden.add_argument(
'--no-warc-open-suffix', dest='no_warc_open_suffix',
default=False, action='store_true',
help=suppress(
'do not name warc files with suffix ".open" while writing to '
'them, but lock them with lockf(3) intead'))
# not mentioned in --help: special value for '-' for --prefix means don't
# archive the capture, unless prefix set in warcprox-meta header
arg_parser.add_argument(
@ -146,40 +163,60 @@ def _build_arg_parser(prog='warcprox'):
'rethinkdb service registry table url; if provided, warcprox '
'will create and heartbeat entry for itself'))
# optional cookie values to pass to CDX Server; e.g. "cookie1=val1;cookie2=val2"
arg_parser.add_argument('--cdxserver-dedup-cookies', dest='cdxserver_dedup_cookies',
help=argparse.SUPPRESS)
hidden.add_argument(
'--cdxserver-dedup-cookies', dest='cdxserver_dedup_cookies',
help=suppress(
'value of Cookie header to include in requests to the cdx '
'server, when using --cdxserver-dedup'))
arg_parser.add_argument('--dedup-min-text-size', dest='dedup_min_text_size',
type=int, default=0,
help=('try to dedup text resources with payload size over this limit in bytes'))
arg_parser.add_argument('--dedup-min-binary-size', dest='dedup_min_binary_size',
type=int, default=0, help=(
'try to dedup binary resources with payload size over this limit in bytes'))
# optionally, dedup request only when `dedup-bucket` is available in
# Warcprox-Meta HTTP header. By default, we dedup all requests.
arg_parser.add_argument('--dedup-only-with-bucket', dest='dedup_only_with_bucket',
action='store_true', default=False, help=argparse.SUPPRESS)
arg_parser.add_argument('--queue-size', dest='queue_size', type=int,
default=500, help=argparse.SUPPRESS)
arg_parser.add_argument('--max-threads', dest='max_threads', type=int,
help=argparse.SUPPRESS)
arg_parser.add_argument('--profile', action='store_true', default=False,
help=argparse.SUPPRESS)
arg_parser.add_argument(
'--writer-threads', dest='writer_threads', type=int, default=None,
help=argparse.SUPPRESS)
hidden.add_argument(
'--dedup-only-with-bucket', dest='dedup_only_with_bucket',
action='store_true', default=False, help=suppress(
'only deduplicate captures if "dedup-bucket" is set in '
'the Warcprox-Meta request header'))
arg_parser.add_argument('--blackout-period', dest='blackout_period',
type=int, default=0,
help='skip writing a revisit record if its too close to the original capture')
hidden.add_argument(
'--queue-size', dest='queue_size', type=int, default=500,
help=suppress(
'maximum number of urls that can be queued at each '
'step of the processing chain (see the section on warcprox '
'architecture in README.rst)'))
hidden.add_argument(
'--max-threads', dest='max_threads', type=int, default=100,
help=suppress('maximum number of http worker threads'))
hidden.add_argument(
'--profile', action='store_true', default=False,
help=suppress(
'turn on performance profiling; summary statistics are dumped '
'every 10 minutes and at shutdown'))
hidden.add_argument(
'--writer-threads', dest='writer_threads', type=int, default=1,
help=suppress(
'number of warc writer threads; caution, see '
'https://github.com/internetarchive/warcprox/issues/101'))
arg_parser.add_argument(
'--onion-tor-socks-proxy', dest='onion_tor_socks_proxy',
default=None, help=(
'host:port of tor socks proxy, used only to connect to '
'.onion sites'))
# Configurable connection socket timeout, default is 60 sec.
arg_parser.add_argument(
'--socket-timeout', dest='socket_timeout', type=float,
default=None, help=argparse.SUPPRESS)
hidden.add_argument(
'--socket-timeout', dest='socket_timeout', type=float, default=60,
help=suppress(
'socket timeout, used for proxy client connection and for '
'connection to remote server'))
# Increasing this value increases memory usage but reduces /tmp disk I/O.
arg_parser.add_argument(
hidden.add_argument(
'--tmp-file-max-memory-size', dest='tmp_file_max_memory_size',
type=int, default=512*1024, help=argparse.SUPPRESS)
type=int, default=512*1024, help=suppress(
'size of in-memory buffer for each url being processed '
'(spills over to temp space on disk if exceeded)'))
arg_parser.add_argument(
'--max-resource-size', dest='max_resource_size', type=int,
default=None, help='maximum resource size limit in bytes')
@ -194,11 +231,18 @@ def _build_arg_parser(prog='warcprox'):
'Qualified name of plugin class, e.g. "mypkg.mymod.MyClass". '
'May be used multiple times to register multiple plugins. '
'See README.rst for more information.'))
arg_parser.add_argument('--version', action='version',
arg_parser.add_argument(
'-q', '--quiet', dest='quiet', action='store_true',
help='less verbose logging')
arg_parser.add_argument(
'-v', '--verbose', dest='verbose', action='store_true',
help='verbose logging')
arg_parser.add_argument(
'--trace', dest='trace', action='store_true',
help='very verbose logging')
arg_parser.add_argument(
'--version', action='version',
version="warcprox {}".format(warcprox.__version__))
arg_parser.add_argument('-v', '--verbose', dest='verbose', action='store_true')
arg_parser.add_argument('--trace', dest='trace', action='store_true')
arg_parser.add_argument('-q', '--quiet', dest='quiet', action='store_true')
return arg_parser
@ -224,7 +268,11 @@ def parse_args(argv):
'''
Parses command line arguments with argparse.
'''
arg_parser = _build_arg_parser(prog=os.path.basename(argv[0]))
show_hidden = False
if '--help-hidden' in argv:
show_hidden = True
argv = [argv[0], '--help-hidden']
arg_parser = _build_arg_parser(os.path.basename(argv[0]), show_hidden)
args = arg_parser.parse_args(args=argv[1:])
try:
@ -242,11 +290,11 @@ def main(argv=None):
args = parse_args(argv or sys.argv)
if args.trace:
loglevel = warcprox.TRACE
loglevel = logging.TRACE
elif args.verbose:
loglevel = logging.DEBUG
elif args.quiet:
loglevel = logging.WARNING
loglevel = logging.NOTICE
else:
loglevel = logging.INFO

27
warcprox/mitmproxy.py
View File

@ -250,7 +250,7 @@ class MitmProxyHandler(http_server.BaseHTTPRequestHandler):
'''
self._conn_pool = self.server.remote_connection_pool.connection_from_host(
host=self.hostname, port=int(self.port), scheme='http',
pool_kwargs={'maxsize': 6})
pool_kwargs={'maxsize': 6, 'timeout': self._socket_timeout})
self._remote_server_conn = self._conn_pool._get_conn()
if is_connection_dropped(self._remote_server_conn):
@ -263,10 +263,9 @@ class MitmProxyHandler(http_server.BaseHTTPRequestHandler):
self._remote_server_conn.sock.set_proxy(
socks.SOCKS5, addr=self.onion_tor_socks_proxy_host,
port=self.onion_tor_socks_proxy_port, rdns=True)
self._remote_server_conn.timeout = self._socket_timeout
self._remote_server_conn.sock.settimeout(self._socket_timeout)
self._remote_server_conn.sock.connect((self.hostname, int(self.port)))
else:
self._remote_server_conn.timeout = self._socket_timeout
self._remote_server_conn.connect()
# Wrap socket if SSL is required
@ -276,16 +275,17 @@ class MitmProxyHandler(http_server.BaseHTTPRequestHandler):
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
self._remote_server_conn.sock = context.wrap_socket(
self._remote_server_conn.sock, server_hostname=self.hostname)
self._remote_server_conn.sock,
server_hostname=self.hostname)
except AttributeError:
try:
self._remote_server_conn.sock = ssl.wrap_socket(
self._remote_server_conn.sock)
except ssl.SSLError:
self.logger.warn(
"failed to establish ssl connection to %s; python "
"ssl library does not support SNI, considering "
"upgrading to python >= 2.7.9 or python 3.4",
"failed to establish ssl connection to %s; "
"python ssl library does not support SNI, "
"consider upgrading to python 2.7.9+ or 3.4+",
self.hostname)
raise
return self._remote_server_conn.sock
@ -424,8 +424,7 @@ class MitmProxyHandler(http_server.BaseHTTPRequestHandler):
self.command, self.path, self.request_version)
# Swallow headers that don't make sense to forward on, i.e. most
# hop-by-hop headers, see
# http://tools.ietf.org/html/rfc2616#section-13.5.
# hop-by-hop headers. http://tools.ietf.org/html/rfc2616#section-13.5.
# self.headers is an email.message.Message, which is case-insensitive
# and doesn't throw KeyError in __delitem__
for key in (
@ -503,10 +502,7 @@ class PooledMixIn(socketserver.ThreadingMixIn):
def __init__(self, max_threads=None):
self.active_requests = set()
self.unaccepted_requests = 0
if max_threads:
self.max_threads = max_threads
else:
self.max_threads = 100
self.max_threads = max_threads or 100
self.pool = concurrent.futures.ThreadPoolExecutor(self.max_threads)
self.logger.info("%s proxy threads", self.max_threads)
@ -596,11 +592,6 @@ class PooledMitmProxy(PooledMixIn, MitmProxy):
request_queue_size = 4096
def __init__(self, options=warcprox.Options()):
if options.max_threads:
self.logger.info(
'max_threads=%s set by command line option',
options.max_threads)
PooledMixIn.__init__(self, options.max_threads)
self.profilers = collections.defaultdict(cProfile.Profile)

51
warcprox/warc.py
View File

@ -19,8 +19,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA.
'''
from __future__ import absolute_import
import logging
import warcprox
import hashlib
@ -83,16 +81,21 @@ class WarcRecordBuilder:
concurrent_to=principal_record.id)
return principal_record, request_record
else:
principal_record = self.build_warc_record(url=recorded_url.url,
principal_record = self.build_warc_record(
url=recorded_url.url,
warc_date=warc_date, data=recorded_url.request_data,
warc_type=recorded_url.custom_type,
content_type=recorded_url.content_type.encode("latin1"))
content_type=recorded_url.content_type.encode("latin1"),
payload_digest=warcprox.digest_str(
recorded_url.payload_digest, self.base32),
content_length=recorded_url.size)
return (principal_record,)
def build_warc_record(self, url, warc_date=None, recorder=None, data=None,
concurrent_to=None, warc_type=None, content_type=None, remote_ip=None,
profile=None, refers_to=None, refers_to_target_uri=None,
refers_to_date=None, payload_digest=None, truncated=None):
refers_to_date=None, payload_digest=None, truncated=None,
content_length=None):
if warc_date is None:
warc_date = warctools.warc.warc_datetime_str(datetime.datetime.utcnow())
@ -126,21 +129,41 @@ class WarcRecordBuilder:
headers.append((b'WARC-Truncated', truncated))
if recorder is not None:
headers.append((warctools.WarcRecord.CONTENT_LENGTH, str(len(recorder)).encode('latin1')))
if content_length is not None:
headers.append((
warctools.WarcRecord.CONTENT_LENGTH,
str(content_length).encode('latin1')))
else:
headers.append((
warctools.WarcRecord.CONTENT_LENGTH,
str(len(recorder)).encode('latin1')))
headers.append((warctools.WarcRecord.BLOCK_DIGEST,
warcprox.digest_str(recorder.block_digest, self.base32)))
recorder.tempfile.seek(0)
record = warctools.WarcRecord(headers=headers, content_file=recorder.tempfile)
else:
headers.append((warctools.WarcRecord.CONTENT_LENGTH, str(len(data)).encode('latin1')))
digest = hashlib.new(self.digest_algorithm, data)
headers.append((warctools.WarcRecord.BLOCK_DIGEST,
warcprox.digest_str(digest, self.base32)))
if content_length is not None:
headers.append((
warctools.WarcRecord.CONTENT_LENGTH,
str(content_length).encode('latin1')))
else:
headers.append((
warctools.WarcRecord.CONTENT_LENGTH,
str(len(data)).encode('latin1')))
# no http headers so block digest == payload digest
if not payload_digest:
headers.append((warctools.WarcRecord.PAYLOAD_DIGEST,
warcprox.digest_str(digest, self.base32)))
content_tuple = content_type, data
record = warctools.WarcRecord(headers=headers, content=content_tuple)
payload_digest = warcprox.digest_str(
hashlib.new(self.digest_algorithm, data), self.base32)
headers.append((
warctools.WarcRecord.PAYLOAD_DIGEST, payload_digest))
headers.append((warctools.WarcRecord.BLOCK_DIGEST, payload_digest))
if hasattr(data, 'read'):
record = warctools.WarcRecord(
headers=headers, content_file=data)
else:
content_tuple = content_type, data
record = warctools.WarcRecord(
headers=headers, content=content_tuple)
return record

30
warcprox/warcproxy.py
View File

@ -44,6 +44,8 @@ import datetime
import urlcanon
import os
from urllib3 import PoolManager
import tempfile
import hashlib
class WarcProxyHandler(warcprox.mitmproxy.MitmProxyHandler):
'''
@ -285,8 +287,18 @@ class WarcProxyHandler(warcprox.mitmproxy.MitmProxyHandler):
and (warc_type or 'WARC-Type' in self.headers)):
timestamp = datetime.datetime.utcnow()
# stream this?
request_data = self.rfile.read(int(self.headers['Content-Length']))
request_data = tempfile.SpooledTemporaryFile(
max_size=self._tmp_file_max_memory_size)
payload_digest = hashlib.new(self.server.digest_algorithm)
# XXX we don't support chunked uploads for now
length = int(self.headers['Content-Length'])
buf = self.rfile.read(min(65536, length - request_data.tell()))
while buf != b'':
request_data.write(buf)
payload_digest.update(buf)
buf = self.rfile.read(
min(65536, length - request_data.tell()))
warcprox_meta = None
raw_warcprox_meta = self.headers.get('Warcprox-Meta')
@ -301,11 +313,14 @@ class WarcProxyHandler(warcprox.mitmproxy.MitmProxyHandler):
warcprox_meta=warcprox_meta,
content_type=self.headers['Content-Type'],
custom_type=warc_type or self.headers['WARC-Type'].encode('utf-8'),
status=204, size=len(request_data),
status=204,
size=request_data.tell(),
client_ip=self.client_address[0],
method=self.command,
timestamp=timestamp,
duration=datetime.datetime.utcnow()-timestamp)
duration=datetime.datetime.utcnow()-timestamp,
payload_digest=payload_digest)
request_data.seek(0)
self.server.recorded_url_q.put(rec_custom)
self.send_response(204, 'OK')
@ -492,12 +507,15 @@ class WarcProxy(SingleThreadedWarcProxy, warcprox.mitmproxy.PooledMitmProxy):
def server_activate(self):
http_server.HTTPServer.server_activate(self)
self.logger.info(
self.logger.notice(
'listening on %s:%s', self.server_address[0],
self.server_address[1])
# take note of actual port in case running with --port=0 so that other
# parts of warcprox have easy access to it
self.options.server_port = self.server_address[1]
def server_close(self):
self.logger.info('shutting down')
self.logger.notice('shutting down')
http_server.HTTPServer.server_close(self)
self.remote_connection_pool.clear()

23
warcprox/writerthread.py
View File

@ -31,6 +31,7 @@ import logging
import time
import warcprox
from concurrent import futures
from datetime import datetime
import threading
class WarcWriterProcessor(warcprox.BaseStandardPostfetchProcessor):
@ -52,6 +53,7 @@ class WarcWriterProcessor(warcprox.BaseStandardPostfetchProcessor):
max_workers=options.writer_threads or 1,
max_queued=10 * (options.writer_threads or 1))
self.batch = set()
self.blackout_period = options.blackout_period or 0
def _startup(self):
self.logger.info('%s warc writer threads', self.pool._max_workers)
@ -114,7 +116,26 @@ class WarcWriterProcessor(warcprox.BaseStandardPostfetchProcessor):
else self.options.prefix)
# special warc name prefix '-' means "don't archive"
return (prefix != '-' and not recorded_url.do_not_archive
and self._filter_accepts(recorded_url))
and self._filter_accepts(recorded_url)
and not self._in_blackout(recorded_url))
def _in_blackout(self, recorded_url):
"""If --blackout-period=N (sec) is set, check if duplicate record
datetime is close to the original. If yes, we don't write it to WARC.
The aim is to avoid having unnecessary `revisit` records.
Return Boolean
"""
if self.blackout_period and hasattr(recorded_url, "dedup_info") and \
recorded_url.dedup_info:
dedup_date = recorded_url.dedup_info.get('date')
if dedup_date and recorded_url.dedup_info.get('url') == recorded_url.url:
try:
dt = datetime.strptime(dedup_date.decode('utf-8'),
'%Y-%m-%dT%H:%M:%SZ')
return (datetime.utcnow() - dt).total_seconds() <= self.blackout_period
except ValueError:
return False
return False
def _log(self, recorded_url, records):
# 2015-07-17T22:32:23.672Z 1 58 dns:www.dhss.delaware.gov P http://www.dhss.delaware.gov/dhss/ text/dns #045 20150717223214881+316 sha1:63UTPB7GTWIHAGIK3WWL76E57BBTJGAK http://www.dhss.delaware.gov/dhss/ - {"warcFileOffset":2964,"warcFilename":"ARCHIVEIT-1303-WEEKLY-JOB165158-20150717223222113-00000.warc.gz"}