Files
zulip/zproject/email_backends.py
Anders Kaseorg 365fe0b3d5 python: Sort imports with isort.
Fixes #2665.

Regenerated by tabbott with `lint --fix` after a rebase and change in
parameters.

Note from tabbott: In a few cases, this converts technical debt in the
form of unsorted imports into different technical debt in the form of
our largest files having very long, ugly import sequences at the
start.  I expect this change will increase pressure for us to split
those files, which isn't a bad thing.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-11 16:45:32 -07:00

98 lines
3.6 KiB
Python

import configparser
import logging
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import List
from django.conf import settings
from django.core.mail import EmailMultiAlternatives
from django.core.mail.backends.base import BaseEmailBackend
from django.template import loader
def get_forward_address() -> str:
config = configparser.ConfigParser()
config.read(settings.FORWARD_ADDRESS_CONFIG_FILE)
try:
return config.get("DEV_EMAIL", "forward_address")
except (configparser.NoSectionError, configparser.NoOptionError):
return ""
def set_forward_address(forward_address: str) -> None:
config = configparser.ConfigParser()
config.read(settings.FORWARD_ADDRESS_CONFIG_FILE)
if not config.has_section("DEV_EMAIL"):
config.add_section("DEV_EMAIL")
config.set("DEV_EMAIL", "forward_address", forward_address)
with open(settings.FORWARD_ADDRESS_CONFIG_FILE, "w") as cfgfile:
config.write(cfgfile)
class EmailLogBackEnd(BaseEmailBackend):
def send_email_smtp(self, email: EmailMultiAlternatives) -> None:
from_email = email.from_email
to = get_forward_address()
msg = MIMEMultipart('alternative')
msg['Subject'] = email.subject
msg['From'] = from_email
msg['To'] = to
text = email.body
html = email.alternatives[0][0]
# Here, we replace the email addresses used in development
# with chat.zulip.org, so that web email providers like Gmail
# will be able to fetch the illustrations used in the emails.
localhost_email_images_base_uri = settings.ROOT_DOMAIN_URI + '/static/images/emails'
czo_email_images_base_uri = 'https://chat.zulip.org/static/images/emails'
html = html.replace(localhost_email_images_base_uri, czo_email_images_base_uri)
msg.attach(MIMEText(text, 'plain'))
msg.attach(MIMEText(html, 'html'))
smtp = smtplib.SMTP(settings.EMAIL_HOST)
smtp.starttls()
smtp.login(settings.EMAIL_HOST_USER, settings.EMAIL_HOST_PASSWORD)
smtp.sendmail(from_email, to, msg.as_string())
smtp.quit()
def log_email(self, email: EmailMultiAlternatives) -> None:
"""Used in development to record sent emails in a nice HTML log"""
html_message = 'Missing HTML message'
if len(email.alternatives) > 0:
html_message = email.alternatives[0][0]
context = {
'subject': email.subject,
'from_email': email.from_email,
'recipients': email.to,
'body': email.body,
'html_message': html_message,
}
new_email = loader.render_to_string('zerver/email.html', context)
# Read in the pre-existing log, so that we can add the new entry
# at the top.
try:
with open(settings.EMAIL_CONTENT_LOG_PATH) as f:
previous_emails = f.read()
except FileNotFoundError:
previous_emails = ""
with open(settings.EMAIL_CONTENT_LOG_PATH, "w+") as f:
f.write(new_email + previous_emails)
def send_messages(self, email_messages: List[EmailMultiAlternatives]) -> int:
for email in email_messages:
if get_forward_address():
self.send_email_smtp(email)
if settings.DEVELOPMENT_LOG_EMAILS:
self.log_email(email)
email_log_url = settings.ROOT_DOMAIN_URI + "/emails"
logging.info("Emails sent in development are available at %s", email_log_url)
return len(email_messages)