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"""Subscribes users to the EFF newsletter."""
import logging
import requests
import zope.component
from certbot import constants
from certbot import interfaces
logger = logging.getLogger(__name__)
def handle_subscription(config):
"""High level function to take care of EFF newsletter subscriptions.
The user may be asked if they want to sign up for the newsletter if
they have not already specified.
:param .IConfig config: Client configuration.
"""
if config.email is None:
if config.eff_email:
_report_failure("you didn't provide an e-mail address")
return
if config.eff_email is None:
config.eff_email = _want_subscription()
if config.eff_email:
subscribe(config.email)
def _want_subscription():
"""Does the user want to be subscribed to the EFF newsletter?
:returns: True if we should subscribe the user, otherwise, False
:rtype: bool
"""
prompt = (
'Would you be willing to share your email address with the '
"Electronic Frontier Foundation, a founding partner of the Let's "
'Encrypt project and the non-profit organization that develops '
"Certbot? We'd like to send you email about our work encrypting "
"the web, EFF news, campaigns, and ways to support digital freedom. ")
display = zope.component.getUtility(interfaces.IDisplay)
return display.yesno(prompt, default=False)
def subscribe(email):
"""Subscribe the user to the EFF mailing list.
:param str email: the e-mail address to subscribe
"""
url = constants.EFF_SUBSCRIBE_URI
data = {'data_type': 'json',
'email': email,
'form_id': 'eff_supporters_library_subscribe_form'}
logger.debug('Sending POST request to %s:\n%s', url, data)
_check_response(requests.post(url, data=data))
def _check_response(response):
"""Check for errors in the server's response.
If an error occurred, it will be reported to the user.
:param requests.Response response: the server's response to the
subscription request
"""
logger.debug('Received response:\n%s', response.content)
try:
response.raise_for_status()
if not response.json()['status']:
_report_failure('your e-mail address appears to be invalid')
except requests.exceptions.HTTPError:
_report_failure()
except (ValueError, KeyError):
_report_failure('there was a problem with the server response')
def _report_failure(reason=None):
"""Notify the user of failing to sign them up for the newsletter.
:param reason: a phrase describing what the problem was
beginning with a lowercase letter and no closing punctuation
:type reason: `str` or `None`
"""
msg = ['We were unable to subscribe you the EFF mailing list']
if reason is not None:
msg.append(' because ')
msg.append(reason)
msg.append('. You can try again later by visiting https://act.eff.org.')
reporter = zope.component.getUtility(interfaces.IReporter)
reporter.add_message(''.join(msg), reporter.LOW_PRIORITY)