Source code for girder.utility.mail_utils

# -*- coding: utf-8 -*-
import os
import re
import six
import smtplib

from email.mime.text import MIMEText
from mako.lookup import TemplateLookup
from girder import events
from girder import logger
from girder.constants import PACKAGE_DIR
from girder.settings import SettingKey


[docs]def validateEmailAddress(address): """ Determines whether a string is a valid email address. This implements the grammar from 4.10.5.1.5 of the HTML Standard. :param address: The string to test. :type address: str :rtype: bool """ # https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address return re.match( r'^[a-zA-Z0-9.!#$%&\'*+/=?^_`{|}~-]+' r'@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?' r'(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$', address ) is not None
[docs]def getEmailUrlPrefix(): """ Return the URL prefix for links back to the server. This is the link to the server root, so Girder-level path information and any query parameters or fragment value should be appended to this value. """ from girder.models.setting import Setting return Setting().get(SettingKey.EMAIL_HOST)
[docs]def renderTemplate(name, params=None): """ Renders one of the HTML mail templates located in girder/mail_templates. :param name: The name of the file inside girder/mail_templates to render. :param params: The parameters to pass when rendering the template. :type params: dict :returns: The rendered template as a string of HTML. """ from girder.models.setting import Setting if not params: params = {} if 'host' not in params: params['host'] = getEmailUrlPrefix() if 'brandName' not in params: params['brandName'] = Setting().get(SettingKey.BRAND_NAME) template = _templateLookup.get_template(name) return template.render(**params)
[docs]def sendEmail(to=None, subject=None, text=None, toAdmins=False, bcc=None): """ Send an email. This builds the appropriate email object and then triggers an asynchronous event to send the email (handled in _sendmail). :param to: The recipient's email address, or a list of addresses. :type to: str, list/tuple, or None :param subject: The subject line of the email. :type subject: str :param text: The body of the email. :type text: str :param toAdmins: To send an email to all site administrators, set this to True, which will override any "to" argument that was passed. :type toAdmins: bool :param bcc: Recipient email address(es) that should be specified using the Bcc header. :type bcc: str, list/tuple, or None """ from girder.models.setting import Setting from girder.models.user import User to = to or () bcc = bcc or () if toAdmins: to = [u['email'] for u in User().getAdmins()] else: if isinstance(to, six.string_types): to = (to,) if isinstance(bcc, six.string_types): bcc = (bcc,) if not to and not bcc: raise Exception('You must specify email recipients via "to" or "bcc", ' 'or use toAdmins=True.') if isinstance(text, six.text_type): text = text.encode('utf8') msg = MIMEText(text, 'html', 'UTF-8') msg['Subject'] = subject or '[no subject]' if to: msg['To'] = ', '.join(to) if bcc: msg['Bcc'] = ', '.join(bcc) msg['From'] = Setting().get(SettingKey.EMAIL_FROM_ADDRESS) events.daemon.trigger('_sendmail', info={ 'message': msg, 'recipients': list(set(to) | set(bcc)) })
[docs]def addTemplateDirectory(dir, prepend=False): """ Adds a directory to the search path for mail templates. This is useful for plugins that have their own set of mail templates. :param dir: The directory to add to the template lookup path. :type dir: str :param prepend: If True, adds this directory at the beginning of the path so that it will override any existing templates with the same name. Otherwise appends to the end of the lookup path. :type prepend: bool """ idx = 0 if prepend else len(_templateLookup.directories) _templateLookup.directories.insert(idx, dir)
class _SMTPConnection(object): def __init__(self, host, port=None, encryption=None, username=None, password=None): self.host = host self.port = port self.encryption = encryption self.username = username self.password = password def __enter__(self): if self.encryption == 'ssl': self.connection = smtplib.SMTP_SSL(self.host, self.port) else: self.connection = smtplib.SMTP(self.host, self.port) if self.encryption == 'starttls': self.connection.starttls() if self.username and self.password: self.connection.login(self.username, self.password) return self def send(self, fromAddress, toAddresses, message): self.connection.sendmail(fromAddress, toAddresses, message) def __exit__(self, exc_type, exc_val, exc_tb): self.connection.quit() def _sendmail(event): from girder.models.setting import Setting msg = event.info['message'] recipients = event.info['recipients'] setting = Setting() smtp = _SMTPConnection( host=setting.get(SettingKey.SMTP_HOST), port=setting.get(SettingKey.SMTP_PORT), encryption=setting.get(SettingKey.SMTP_ENCRYPTION), username=setting.get(SettingKey.SMTP_USERNAME), password=setting.get(SettingKey.SMTP_PASSWORD) ) logger.info('Sending email to %s through %s', ', '.join(recipients), smtp.host) with smtp: smtp.send(msg['From'], recipients, msg.as_string()) _templateDir = os.path.join(PACKAGE_DIR, 'mail_templates') _templateLookup = TemplateLookup(directories=[_templateDir], collection_size=50) events.bind('_sendmail', 'core.email', _sendmail)