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haketilo / test / haketilo_test / profiles.py @ f8dedf60

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# SPDX-License-Identifier: GPL-3.0-or-later
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"""
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Browser profiles and Selenium driver initialization
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"""
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# This file is part of Haketilo.
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#
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# Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see <https://www.gnu.org/licenses/>.
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#
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# I, Wojtek Kosior, thereby promise not to sue for violation of this file's
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# license. Although I request that you do not make use of this code in a
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# proprietary program, I am not going to enforce this in court.
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from selenium import webdriver
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from selenium.webdriver.firefox.options import Options
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import json
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from shutil import rmtree
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from .misc_constants import *
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class HaketiloFirefox(webdriver.Firefox):
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    """
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    This wrapper class around selenium.webdriver.Firefox facilitates removing
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    the temporary profile directory after Firefox quits.
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    """
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    def quit(self, *args, **kwargs):
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        profile_path = self.firefox_profile.path
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        super().quit(*args, **kwargs)
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        rmtree(profile_path, ignore_errors=True)
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def set_profile_proxy(profile, proxy_host, proxy_port):
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    """
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    Create a Firefox profile that uses the specified HTTP proxy for all
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    protocols.
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    """
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    # proxy type 1 designates "manual"
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    profile.set_preference('network.proxy.type',                 1)
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    profile.set_preference('network.proxy.no_proxies_on',        '')
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    profile.set_preference('network.proxy.share_proxy_settings', True)
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    for proto in ['http', 'ftp', 'socks', 'ssl']:
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        profile.set_preference(f'network.proxy.{proto}',             proxy_host)
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        profile.set_preference(f'network.proxy.{proto}_port',        proxy_port)
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        profile.set_preference(f'network.proxy.backup.{proto}',      '')
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        profile.set_preference(f'network.proxy.backup.{proto}_port', 0)
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def set_profile_csp_enabled(profile):
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    """
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    By default, Firefox Driver disables CSP. The extension we're testing uses
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    CSP extensively, so we use this function to prepare a Firefox profile that
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    has it enabled.
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    """
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    profile.set_preference('security.csp.enable', True)
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# The function below seems not to work for extensions that are
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# temporarily-installed in Firefox safe mode. Testing is needed to see if it
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# works with non-temporary extensions (without safe mode).
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def set_webextension_uuid(profile, extension_id, uuid=default_extension_uuid):
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    """
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    Firefox would normally assign a unique, random UUID to installed extension.
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    This UUID is needed to easily navigate to extension's settings page (and
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    other extension's pages). Since there's no way to learn such UUID with
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    current WebDriver implementation, this function works around this by telling
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    Firefox to use a predefined UUID for a certain extension.
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    """
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    profile.set_preference('extensions.webextensions.uuids',
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                           json.dumps({extension_id: uuid}))
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def firefox_safe_mode(proxy_port, proxy_host=default_proxy_host,
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                      firefox_binary=conf_settings['BROWSER_BINARY']):
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    """
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    Initialize a Firefox instance controlled by selenium. The instance is
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    started in safe mode.
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    """
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    profile = webdriver.FirefoxProfile()
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    set_profile_proxy(profile, proxy_host, proxy_port)
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    set_profile_csp_enabled(profile)
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    options = Options()
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    options.add_argument('--safe-mode')
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    return HaketiloFirefox(options=options, firefox_profile=profile,
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                           firefox_binary=firefox_binary)
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def firefox_with_profile(proxy_port, proxy_host=default_proxy_host,
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                         firefox_binary=conf_settings['BROWSER_BINARY'],
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                         profile_dir=conf_settings['CLEAN_PROFILE']):
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    """
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    Initialize a Firefox instance controlled by selenium. The instance is
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    started using an empty profile (either the default one or the one passed to
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    `configure` script). The empty profile is meant to make Firefox start with
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    globally-installed extensions disabled.
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    """
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    profile = webdriver.FirefoxProfile(profile_dir)
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    set_profile_proxy(profile, proxy_host, proxy_port)
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    set_profile_csp_enabled(profile)
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    set_webextension_uuid(profile, default_haketilo_id)
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    return HaketiloFirefox(firefox_profile=profile,
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                           firefox_binary=firefox_binary)
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