A zope.testbrowser extension with useragent faking and proxy abilitiesa sponsorised by Makina Corpus
Project description
Introduction
This Yet-Another-Mechanize implementation aims to give the developper those new features:
It can be proxified
It does proxy balancing
It fakes user agent by default
It does not handle robots by default
There is a ‘real” modification which uses an underlying moz repl server to control a distance firefox instance
It uses sys.prefix/etc/config.ini with a part [collective.anonymousbrowser] for its settings:
[collective.anonymousbrowser] proxies= ; for a mozrepl server host = localhost port = 4242 firefox = /path/To/Firefox ff-profile = /path/to/FFprofile
This file is generated at the first run without proxies. It s your own to feed it with some open proxies.
Of course, it can take another configuration file, please see the __init__ method.
Makina Corpus sponsorised software
TODO
lxml integration, maybe steal z3c.etestbrowser
Tests and Handbook
First, we need to instantiate the sources where we come from:
>>> from collective.anonymousbrowser.browser import Browser, FF2_USERAGENT
User Agent
Oh, my god, we have a brand new user agent by default:
>>> br = Browser()
>>> br.open('http://localhost:45678')
>>> FF2_USERAGENT in br.contents
True
>>> br2 = Browser('http://localhost:45678')
>>> FF2_USERAGENT in br2.contents
True
Proxy mode
But, we want to be anonymous, and we ll set a proxy To define those proxies, just just a config.ini file like:
[collective.anonymousbrowser]
proxies =
host1:port
host2:port
When the browser has many proxies defined, it will circly through those ones. But, it will not use the same host indefinitivly, just set the proxy_max_use argument:
>>> from StringIO import StringIO
>>> from tempfile import mkstemp
>>> __, config = mkstemp()
>>> open(config, 'w').write("""[collective.anonymousbrowser]
... proxies =
... 127.0.0.1:45675
... 127.0.0.1:45676
... 127.0.0.1:45677
... 127.0.0.1:45678
... 127.0.0.1:45679
... """)
>>> b = Browser(config=config, proxy_max_use=3)
>>> b._config._sections
{'collective.anonymousbrowser': {'__name__': 'collective.anonymousbrowser', 'proxies': '\n127.0.0.1:45675\n127.0.0.1:45676\n127.0.0.1:45677\n127.0.0.1:45678\n127.0.0.1:45679'}}
>>> b.proxies
['127.0.0.1:45675', '127.0.0.1:45676', '127.0.0.1:45677', '127.0.0.1:45678', '127.0.0.1:45679']
>>> b.proxified
True
>>> b.open('http://localhost:45678')
>>> 'Host: localhost:45678' in b.contents
True
>>> b._lastproxy['count'] == 1 and b._lastproxy['proxy'] in [0,1,2,3,4]
True
We can have a normal unproxified browser too
>>> b1 = Browser(proxify=False) >>> b1.proxified False
Next thing to verify is that we have our pseudo-random loop running First thing is we will choose 2 times the 2nd proxy, then the third And of course, we will set the mocker to change the proxy at each row.:
>>> import mocker
>>> import random
>>> mocked = mocker.Mocker()
>>> custom_random_int = mocked.replace('random.randint')
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(3)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(4)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(1)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> mocked.replay()
>>> b = Browser('http://localhost:45678', config=config, proxy_max_use=3)
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 2, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 3, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 0}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 3}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 4}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 1}
>>> mocked.restore()
If the proxies are dead, we remove them from the list:
>>> __, config = mkstemp()
>>> open(config, 'w').write("""[collective.anonymousbrowser]
... proxies =
... 127.0.0.1:35675
... 127.0.0.1:35676
... 127.0.0.1:35677
... 127.0.0.1:45678
... """)
>>> mybrowser = Browser(config=config, proxy_max_use=3)
>>> mybrowser.proxies
['127.0.0.1:35675', '127.0.0.1:35676', '127.0.0.1:35677', '127.0.0.1:45678']
>>> mybrowser.open('http://localhost:45678')
>>> mybrowser.proxies
['127.0.0.1:45678']
>>> mybrowser.proxies = ['127.0.0.1:34785']
>>> mybrowser.open('http://localhost:45678')
Traceback (most recent call last):
...
Exception: There are no valid proxies left
The loop is recursion protected. If we return always the same host, so the chooser cannot choose anything else. It will loop until it crashes or it handle the recursion:
>>> def randomint(a,b): ... return 2 >>> import random; random.randint = randomint >>> b2 = Browser(config=config, proxy_max_use=3) >>> b2.proxy_max_use 3 >>> b2._lastproxy['count'] 0 >>> b2.chooseProxy() '... >>> b2._lastproxy['count'] 1 >>> b2.chooseProxy() '... >>> b2._lastproxy['count'] 2 >>> b2.chooseProxy() '... >>> b2._lastproxy['count'] 3 >>> b2.chooseProxy() '... >>> b2.chooseProxy() Ho, seems we got the max wills to choose, something has gone wrong '127.0.0.1:35675'
Real Browser implementation throught mozrepl
TODO:
Handle configuration with mozrunner for:
user agent faking
proxies management
First, we need to instantiate the sources where we come from:
>>> from collective.anonymousbrowser.real import *
In the section [collective.anonymousbrowser] of your configuration file you can add those parameters:
host : host of firefox mozrepl instance
port : port of firefox mozrepl instance
firefox : path to the firefox binary
firefox-profile : path to the firefox profile to use
Start to use it on our little http server:
>>> b = Browser('http://localhost:45675')
>>> b.contents
'<html>...<pre>...localhost:45675...</pre>...</html>'
>>> b.open('http://localhost:45675')
>>> b.contents
'<html>...<pre>...localhost:45675...</pre>...</html>'
Kill any launched firefox from the browser instance with its configuration settings:
>>> b.stop_ff() >>> b.start_ff() <mozrunner.runner.Firefox object at ...> >>> b.restart_ff() <mozrunner.runner.Firefox object at ...>
Cleanup:
>>> b.stop_ff()
HISTORY
0.10-<0.11
bugfix for 0.9
0.9
Fix binary distributions, now with a sample decorator, mozrunner executes its commands in firefox directories
0.8
bugfix for js execution
0.7
bugfix: firefox is started when you call open… its better.
0.6
doc + bugfixes
use of testrunner to handle firefox instance
robustify the proxy code
add tests
0.4
doc + bugfixes
0.3
adding error message
0.2
Adding proxy fallback facility
0.1
Initial release
