# -*- coding: utf-8 -*- # BSD 2-Clause License # # Apprise - Push Notification Library. # Copyright (c) 2024, Chris Caron # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1. Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. import re import smtplib from email.mime.text import MIMEText from email.mime.application import MIMEApplication from email.mime.multipart import MIMEMultipart from email.mime.base import MIMEBase from email.utils import formataddr, make_msgid from email.header import Header from socket import error as SocketError from datetime import datetime from datetime import timezone from ..base import NotifyBase from ...url import PrivacyMode from ...common import NotifyFormat, NotifyType from ...conversion import convert_between from ...utils import pgp as _pgp from ...utils.parse import ( is_ipaddr, is_email, parse_emails, is_hostname, parse_bool) from ...locale import gettext_lazy as _ from ...logger import logger from .common import ( AppriseEmailException, EmailMessage, SecureMailMode, SECURE_MODES, WebBaseLogin) from . import templates class NotifyEmail(NotifyBase): """ A wrapper to Email Notifications """ # The default descriptive name associated with the Notification service_name = 'E-Mail' # The default simple (insecure) protocol protocol = 'mailto' # The default secure protocol secure_protocol = 'mailtos' # A URL that takes you to the setup/help of the specific protocol setup_url = 'https://github.com/caronc/apprise/wiki/Notify_email' # Support attachments attachment_support = True # Default Notify Format notify_format = NotifyFormat.HTML # Default SMTP Timeout (in seconds) socket_connect_timeout = 15 # Define object templates templates = ( '{schema}://{host}', '{schema}://{host}:{port}', '{schema}://{host}/{targets}', '{schema}://{host}:{port}/{targets}', '{schema}://{user}@{host}', '{schema}://{user}@{host}:{port}', '{schema}://{user}@{host}/{targets}', '{schema}://{user}@{host}:{port}/{targets}', '{schema}://{user}:{password}@{host}', '{schema}://{user}:{password}@{host}:{port}', '{schema}://{user}:{password}@{host}/{targets}', '{schema}://{user}:{password}@{host}:{port}/{targets}', ) # Define our template tokens template_tokens = dict(NotifyBase.template_tokens, **{ 'user': { 'name': _('User Name'), 'type': 'string', }, 'password': { 'name': _('Password'), 'type': 'string', 'private': True, }, 'host': { 'name': _('Domain'), 'type': 'string', 'required': True, }, 'port': { 'name': _('Port'), 'type': 'int', 'min': 1, 'max': 65535, }, 'target_email': { 'name': _('Target Email'), 'type': 'string', 'map_to': 'targets', }, 'targets': { 'name': _('Targets'), 'type': 'list:string', }, }) template_args = dict(NotifyBase.template_args, **{ 'to': { 'name': _('To Email'), 'type': 'string', 'map_to': 'targets', }, 'from': { 'name': _('From Email'), 'type': 'string', 'map_to': 'from_addr', }, 'name': { 'name': _('From Name'), 'type': 'string', 'map_to': 'from_addr', }, 'cc': { 'name': _('Carbon Copy'), 'type': 'list:string', }, 'bcc': { 'name': _('Blind Carbon Copy'), 'type': 'list:string', }, 'smtp': { 'name': _('SMTP Server'), 'type': 'string', 'map_to': 'smtp_host', }, 'mode': { 'name': _('Secure Mode'), 'type': 'choice:string', 'values': SECURE_MODES, 'default': SecureMailMode.STARTTLS, 'map_to': 'secure_mode', }, 'reply': { 'name': _('Reply To'), 'type': 'list:string', 'map_to': 'reply_to', }, 'pgp': { 'name': _('PGP Encryption'), 'type': 'bool', 'map_to': 'use_pgp', 'default': False, }, 'pgpkey': { 'name': _('PGP Public Key Path'), 'type': 'string', 'private': True, # By default persistent storage is referenced 'default': '', 'map_to': 'pgp_key', }, }) # Define any kwargs we're using template_kwargs = { 'headers': { 'name': _('Email Header'), 'prefix': '+', }, } def __init__(self, smtp_host=None, from_addr=None, secure_mode=None, targets=None, cc=None, bcc=None, reply_to=None, headers=None, use_pgp=None, pgp_key=None, **kwargs): """ Initialize Email Object The smtp_host and secure_mode can be automatically detected depending on how the URL was built """ super().__init__(**kwargs) # Acquire Email 'To' self.targets = list() # Acquire Carbon Copies self.cc = set() # Acquire Blind Carbon Copies self.bcc = set() # Acquire Reply To self.reply_to = set() # For tracking our email -> name lookups self.names = {} self.headers = {} if headers: # Store our extra headers self.headers.update(headers) # Now we want to construct the To and From email # addresses from the URL provided self.from_addr = [False, ''] # Now detect the SMTP Server self.smtp_host = \ smtp_host if isinstance(smtp_host, str) else '' # Now detect secure mode if secure_mode: self.secure_mode = None \ if not isinstance(secure_mode, str) \ else secure_mode.lower() else: self.secure_mode = SecureMailMode.INSECURE \ if not self.secure else self.template_args['mode']['default'] if self.secure_mode not in SECURE_MODES: msg = 'The secure mode specified ({}) is invalid.'\ .format(secure_mode) self.logger.warning(msg) raise TypeError(msg) # Validate recipients (cc:) and drop bad ones: for recipient in parse_emails(cc): email = is_email(recipient) if email: self.cc.add(email['full_email']) # Index our name (if one exists) self.names[email['full_email']] = \ email['name'] if email['name'] else False continue self.logger.warning( 'Dropped invalid Carbon Copy email ' '({}) specified.'.format(recipient), ) # Validate recipients (bcc:) and drop bad ones: for recipient in parse_emails(bcc): email = is_email(recipient) if email: self.bcc.add(email['full_email']) # Index our name (if one exists) self.names[email['full_email']] = \ email['name'] if email['name'] else False continue self.logger.warning( 'Dropped invalid Blind Carbon Copy email ' '({}) specified.'.format(recipient), ) # Validate recipients (reply-to:) and drop bad ones: for recipient in parse_emails(reply_to): email = is_email(recipient) if email: self.reply_to.add(email['full_email']) # Index our name (if one exists) self.names[email['full_email']] = \ email['name'] if email['name'] else False continue self.logger.warning( 'Dropped invalid Reply To email ' '({}) specified.'.format(recipient), ) # Apply any defaults based on certain known configurations self.apply_email_defaults(secure_mode=secure_mode, **kwargs) if self.user: if self.host: # Prepare the bases of our email self.from_addr = [self.app_id, '{}@{}'.format( re.split(r'[\s@]+', self.user)[0], self.host, )] else: result = is_email(self.user) if result: # Prepare the bases of our email and include domain self.host = result['domain'] self.from_addr = [self.app_id, self.user] if from_addr: result = is_email(from_addr) if result: self.from_addr = ( result['name'] if result['name'] else False, result['full_email']) else: # Only update the string but use the already detected info self.from_addr[0] = from_addr result = is_email(self.from_addr[1]) if not result: # Parse Source domain based on from_addr msg = 'Invalid ~From~ email specified: {}'.format( '{} <{}>'.format(self.from_addr[0], self.from_addr[1]) if self.from_addr[0] else '{}'.format(self.from_addr[1])) self.logger.warning(msg) raise TypeError(msg) # Store our lookup self.names[self.from_addr[1]] = self.from_addr[0] if targets: # Validate recipients (to:) and drop bad ones: for recipient in parse_emails(targets): result = is_email(recipient) if result: self.targets.append( (result['name'] if result['name'] else False, result['full_email'])) continue self.logger.warning( 'Dropped invalid To email ' '({}) specified.'.format(recipient), ) else: # If our target email list is empty we want to add ourselves to it self.targets.append((False, self.from_addr[1])) if not self.secure and self.secure_mode != SecureMailMode.INSECURE: # Enable Secure mode if not otherwise set self.secure = True if not self.port: # Assign our port based on our secure_mode if not otherwise # detected self.port = SECURE_MODES[self.secure_mode]['default_port'] # if there is still no smtp_host then we fall back to the hostname if not self.smtp_host: self.smtp_host = self.host # Prepare our Pretty Good Privacy Object self.pgp = _pgp.ApprisePGPController( path=self.store.path, pub_keyfile=pgp_key, email=self.from_addr[1], asset=self.asset) # We store so we can generate a URL later on self.pgp_key = pgp_key self.use_pgp = use_pgp if not None \ else self.template_args['pgp']['default'] if self.use_pgp and not _pgp.PGP_SUPPORT: self.logger.warning( 'PGP Support is not available on this installation; ' 'ask admin to install PGPy') return def apply_email_defaults(self, secure_mode=None, port=None, **kwargs): """ A function that prefills defaults based on the email it was provided. """ if self.smtp_host or not self.user: # SMTP Server was explicitly specified, therefore it is assumed # the caller knows what he's doing and is intentionally # over-riding any smarts to be applied. We also can not apply # any default if there was no user specified. return # detect our email address using our user/host combo from_addr = '{}@{}'.format( re.split(r'[\s@]+', self.user)[0], self.host, ) for i in range(len(templates.EMAIL_TEMPLATES)): # pragma: no branch self.logger.trace('Scanning %s against %s' % ( from_addr, templates.EMAIL_TEMPLATES[i][0] )) match = templates.EMAIL_TEMPLATES[i][1].match(from_addr) if match: self.logger.info( 'Applying %s Defaults' % templates.EMAIL_TEMPLATES[i][0], ) # the secure flag can not be altered if defined in the template self.secure = templates.EMAIL_TEMPLATES[i][2]\ .get('secure', self.secure) # The SMTP Host check is already done above; if it was # specified we wouldn't even reach this part of the code. self.smtp_host = templates.EMAIL_TEMPLATES[i][2]\ .get('smtp_host', self.smtp_host) # The following can be over-ridden if defined manually in the # Apprise URL. Otherwise they take on the template value if not port: self.port = templates.EMAIL_TEMPLATES[i][2]\ .get('port', self.port) if not secure_mode: self.secure_mode = templates.EMAIL_TEMPLATES[i][2]\ .get('secure_mode', self.secure_mode) # Adjust email login based on the defined usertype. If no entry # was specified, then we default to having them all set (which # basically implies that there are no restrictions and use use # whatever was specified) login_type = \ templates.EMAIL_TEMPLATES[i][2].get('login_type', []) if login_type: # only apply additional logic to our user if a login_type # was specified. if is_email(self.user): if WebBaseLogin.EMAIL not in login_type: # Email specified but login type # not supported; switch it to user id self.user = match.group('id') else: # Enforce our host information self.host = self.user.split('@')[1] elif WebBaseLogin.USERID not in login_type: # user specified but login type # not supported; switch it to email self.user = '{}@{}'.format(self.user, self.host) break def send(self, body, title='', notify_type=NotifyType.INFO, attach=None, **kwargs): if not self.targets: # There is no one to email; we're done logger.warning('There are no Email recipients to notify') return False # error tracking (used for function return) has_error = False # bind the socket variable to the current namespace socket = None # Always call throttle before any remote server i/o is made self.throttle() try: self.logger.debug('Connecting to remote SMTP server...') socket_func = smtplib.SMTP if self.secure_mode == SecureMailMode.SSL: self.logger.debug('Securing connection with SSL...') socket_func = smtplib.SMTP_SSL socket = socket_func( self.smtp_host, self.port, None, timeout=self.socket_connect_timeout, ) if self.secure_mode == SecureMailMode.STARTTLS: # Handle Secure Connections self.logger.debug('Securing connection with STARTTLS...') socket.starttls() self.logger.trace('Login ID: {}'.format(self.user)) if self.user and self.password: # Apply Login credetials self.logger.debug('Applying user credentials...') socket.login(self.user, self.password) # Prepare our headers headers = { 'X-Application': self.app_id, } headers.update(self.headers) # Iterate over our email messages we can generate and then # send them off. for message in NotifyEmail.prepare_emails( subject=title, body=body, notify_format=self.notify_format, from_addr=self.from_addr, to=self.targets, cc=self.cc, bcc=self.bcc, reply_to=self.reply_to, smtp_host=self.smtp_host, attach=attach, headers=headers, names=self.names, pgp=self.pgp if self.use_pgp else None): try: socket.sendmail( self.from_addr[1], message.to_addrs, message.body) self.logger.info('Sent Email to %s', message.recipient) except (SocketError, smtplib.SMTPException, RuntimeError) as e: self.logger.warning( 'Sending email to "%s" failed.', message.recipient) self.logger.debug(f'Socket Exception: {e}') # Mark as failure has_error = True except (SocketError, smtplib.SMTPException, RuntimeError) as e: self.logger.warning( 'Connection error while submitting email to "%s"', self.smtp_host) self.logger.debug(f'Socket Exception: {e}') # Mark as failure has_error = True except AppriseEmailException as e: self.logger.debug(f'Socket Exception: {e}') # Mark as failure has_error = True finally: # Gracefully terminate the connection with the server if socket is not None: socket.quit() # Reduce our dictionary (eliminate expired keys if any) self.pgp.prune() return not has_error def url(self, privacy=False, *args, **kwargs): """ Returns the URL built dynamically based on specified arguments. """ # Define an URL parameters params = { 'pgp': 'yes' if self.use_pgp else 'no', } # Store our public key back into your URL if self.pgp_key is not None: params['pgp_key'] = NotifyEmail.quote(self.pgp_key, safe=':\\/') # Append our headers into our parameters params.update({'+{}'.format(k): v for k, v in self.headers.items()}) # Extend our parameters params.update(self.url_parameters(privacy=privacy, *args, **kwargs)) from_addr = None if len(self.targets) == 1 and self.targets[0][1] != self.from_addr[1]: # A custom email was provided from_addr = self.from_addr[1] if self.smtp_host != self.host: # Apply our SMTP Host only if it differs from the provided hostname params['smtp'] = self.smtp_host if self.secure: # Mode is only requried if we're dealing with a secure connection params['mode'] = self.secure_mode if self.from_addr[0] and self.from_addr[0] != self.app_id: # A custom name was provided params['from'] = self.from_addr[0] if not from_addr else \ formataddr((self.from_addr[0], from_addr), charset='utf-8') elif from_addr: params['from'] = formataddr((False, from_addr), charset='utf-8') elif not self.user: params['from'] = \ formataddr((False, self.from_addr[1]), charset='utf-8') if self.cc: # Handle our Carbon Copy Addresses params['cc'] = ','.join([ formataddr( (self.names[e] if e in self.names else False, e), # Swap comma for it's escaped url code (if detected) since # we're using that as a delimiter charset='utf-8').replace(',', '%2C') for e in self.cc]) if self.bcc: # Handle our Blind Carbon Copy Addresses params['bcc'] = ','.join([ formataddr( (self.names[e] if e in self.names else False, e), # Swap comma for it's escaped url code (if detected) since # we're using that as a delimiter charset='utf-8').replace(',', '%2C') for e in self.bcc]) if self.reply_to: # Handle our Reply-To Addresses params['reply'] = ','.join([ formataddr( (self.names[e] if e in self.names else False, e), # Swap comma for it's escaped url code (if detected) since # we're using that as a delimiter charset='utf-8').replace(',', '%2C') for e in self.reply_to]) # pull email suffix from username (if present) user = None if not self.user else self.user.split('@')[0] # Determine Authentication auth = '' if self.user and self.password: auth = '{user}:{password}@'.format( user=NotifyEmail.quote(user, safe=''), password=self.pprint( self.password, privacy, mode=PrivacyMode.Secret, safe=''), ) elif user: # user url auth = '{user}@'.format( user=NotifyEmail.quote(user, safe=''), ) # Default Port setup default_port = SECURE_MODES[self.secure_mode]['default_port'] # a simple boolean check as to whether we display our target emails # or not has_targets = \ not (len(self.targets) == 1 and self.targets[0][1] == self.from_addr[1]) return '{schema}://{auth}{hostname}{port}/{targets}?{params}'.format( schema=self.secure_protocol if self.secure else self.protocol, auth=auth, # never encode hostname since we're expecting it to be a valid one hostname=self.host, port='' if self.port is None or self.port == default_port else ':{}'.format(self.port), targets='' if not has_targets else '/'.join( [NotifyEmail.quote('{}{}'.format( '' if not e[0] else '{}:'.format(e[0]), e[1]), safe='') for e in self.targets]), params=NotifyEmail.urlencode(params), ) @property def url_identifier(self): """ Returns all of the identifiers that make this URL unique from another simliar one. Targets or end points should never be identified here. """ return ( self.secure_protocol if self.secure else self.protocol, self.user, self.password, self.host, self.smtp_host, self.port if self.port else SECURE_MODES[self.secure_mode]['default_port'], ) def __len__(self): """ Returns the number of targets associated with this notification """ return len(self.targets) if self.targets else 1 @staticmethod def parse_url(url): """ Parses the URL and returns enough arguments that can allow us to re-instantiate this object. """ results = NotifyBase.parse_url(url, verify_host=False) if not results: # We're done early as we couldn't load the results return results # Prepare our target lists results['targets'] = [] if is_ipaddr(results['host']): # Silently move on and do not disrupt any configuration pass elif not is_hostname(results['host'], ipv4=False, ipv6=False, underscore=False): if is_email(NotifyEmail.unquote(results['host'])): # Don't lose defined email addresses results['targets'].append(NotifyEmail.unquote(results['host'])) # Detect if we have a valid hostname or not; be sure to reset it's # value if invalid; we'll attempt to figure this out later on results['host'] = '' # Get PGP Flag results['use_pgp'] = \ parse_bool(results['qsd'].get( 'pgp', NotifyEmail.template_args['pgp']['default'])) # Get PGP Public Key Override if 'pgpkey' in results['qsd'] and results['qsd']['pgpkey']: results['pgp_key'] = \ NotifyEmail.unquote(results['qsd']['pgpkey']) # The From address is a must; either through the use of templates # from= entry and/or merging the user and hostname together, this # must be calculated or parse_url will fail. from_addr = '' # The server we connect to to send our mail to smtp_host = '' # Get our potential email targets; if none our found we'll just # add one to ourselves results['targets'] += NotifyEmail.split_path(results['fullpath']) # Attempt to detect 'to' email address if 'to' in results['qsd'] and len(results['qsd']['to']): results['targets'].append(results['qsd']['to']) # Attempt to detect 'from' email address if 'from' in results['qsd'] and len(results['qsd']['from']): from_addr = NotifyEmail.unquote(results['qsd']['from']) if 'name' in results['qsd'] and len(results['qsd']['name']): from_addr = formataddr( (NotifyEmail.unquote(results['qsd']['name']), from_addr), charset='utf-8') elif 'name' in results['qsd'] and len(results['qsd']['name']): # Extract from name to associate with from address from_addr = NotifyEmail.unquote(results['qsd']['name']) # Store SMTP Host if specified if 'smtp' in results['qsd'] and len(results['qsd']['smtp']): # Extract the smtp server smtp_host = NotifyEmail.unquote(results['qsd']['smtp']) if 'mode' in results['qsd'] and len(results['qsd']['mode']): # Extract the secure mode to over-ride the default results['secure_mode'] = results['qsd']['mode'].lower() # Handle Carbon Copy Addresses if 'cc' in results['qsd'] and len(results['qsd']['cc']): results['cc'] = results['qsd']['cc'] # Handle Blind Carbon Copy Addresses if 'bcc' in results['qsd'] and len(results['qsd']['bcc']): results['bcc'] = results['qsd']['bcc'] # Handle Reply To Addresses if 'reply' in results['qsd'] and len(results['qsd']['reply']): results['reply_to'] = results['qsd']['reply'] results['from_addr'] = from_addr results['smtp_host'] = smtp_host # Add our Meta Headers that the user can provide with their outbound # emails results['headers'] = {NotifyBase.unquote(x): NotifyBase.unquote(y) for x, y in results['qsd+'].items()} return results @staticmethod def _get_charset(input_string): """ Get utf-8 charset if non ascii string only Encode an ascii string to utf-8 is bad for email deliverability because some anti-spam gives a bad score for that like SUBJ_EXCESS_QP flag on Rspamd """ if not input_string: return None return 'utf-8' if not all(ord(c) < 128 for c in input_string) else None @staticmethod def prepare_emails(subject, body, from_addr, to, cc=set(), bcc=set(), reply_to=set(), # Providing an SMTP Host helps improve Email Message-ID # and avoids getting flagged as spam smtp_host=None, # Can be either 'html' or 'text' notify_format=NotifyFormat.HTML, attach=None, headers=dict(), # Names can be a dictionary names=None, # Pretty Good Privacy Support; Pass in an # ApprisePGPController if you wish to use it pgp=None): """ Generator for emails from_addr: must be in format: (from_name, from_addr) to: must be in the format: [(to_name, to_addr), (to_name, to_addr)), ...] cc: must be a set of email addresses bcc: must be a set of email addresses reply_to: must be either None, or an email address smtp_host: This is used to generate the email's Message-ID. Set this correctly to avoid getting flagged as Spam notify_format: can be either 'text' or 'html' attach: must be of class AppriseAttachment headers: Optionally provide a dictionary of additional headers you would like to include in the email payload names: This is a dictionary of email addresses as keys and the Names to associate with them when sending the email. This is cross referenced for the cc and bcc lists pgp: Encrypting the message using Pretty Good Privacy support This requires that the pgp_path provided exists and keys can be referenced here to perform the encryption with. If a key isn't found, one will be generated. pgp support requires the 'PGPy' Python library to be available. Pass in an ApprisePGPController() if you wish to use this """ if not to: # There is no one to email; we're done msg = 'There are no Email recipients to notify' logger.warning(msg) raise AppriseEmailException(msg) elif pgp and not _pgp.PGP_SUPPORT: msg = 'PGP Support unavailable; install PGPy library' logger.warning(msg) raise AppriseEmailException(msg) if not names: # Prepare a empty dictionary to prevent errors/warnings names = {} if not smtp_host: # Generate a host identifier (used for Message-ID Creation) smtp_host = from_addr[1].split('@')[1] logger.debug('SMTP Host: {smtp_host}') # Create a copy of the targets list emails = list(to) while len(emails): # Get our email to notify to_name, to_addr = emails.pop(0) # Strip target out of cc list if in To or Bcc _cc = (cc - bcc - set([to_addr])) # Strip target out of bcc list if in To _bcc = (bcc - set([to_addr])) # Strip target out of reply_to list if in To _reply_to = (reply_to - set([to_addr])) # Format our cc addresses to support the Name field _cc = [formataddr( (names.get(addr, False), addr), charset='utf-8') for addr in _cc] # Format our bcc addresses to support the Name field _bcc = [formataddr( (names.get(addr, False), addr), charset='utf-8') for addr in _bcc] if reply_to: # Format our reply-to addresses to support the Name field reply_to = [formataddr( (names.get(addr, False), addr), charset='utf-8') for addr in reply_to] logger.debug( 'Email From: {}'.format( formataddr(from_addr, charset='utf-8'))) logger.debug('Email To: {}'.format(to_addr)) if _cc: logger.debug('Email Cc: {}'.format(', '.join(_cc))) if _bcc: logger.debug('Email Bcc: {}'.format(', '.join(_bcc))) if _reply_to: logger.debug( 'Email Reply-To: {}'.format(', '.join(_reply_to)) ) # Prepare Email Message if notify_format == NotifyFormat.HTML: base = MIMEMultipart("alternative") base.attach(MIMEText( convert_between( NotifyFormat.HTML, NotifyFormat.TEXT, body), 'plain', 'utf-8') ) base.attach(MIMEText(body, 'html', 'utf-8')) else: base = MIMEText(body, 'plain', 'utf-8') if attach: mixed = MIMEMultipart("mixed") mixed.attach(base) # Now store our attachments for no, attachment in enumerate(attach, start=1): if not attachment: # We could not load the attachment; take an early # exit since this isn't what the end user wanted # We could not access the attachment msg = 'Could not access attachment {}.'.format( attachment.url(privacy=True)) logger.warning(msg) raise AppriseEmailException(msg) logger.debug( 'Preparing Email attachment {}'.format( attachment.url(privacy=True))) with open(attachment.path, "rb") as abody: app = MIMEApplication(abody.read()) app.set_type(attachment.mimetype) # Prepare our attachment name filename = attachment.name \ if attachment.name else f'file{no:03}.dat' app.add_header( 'Content-Disposition', 'attachment; filename="{}"'.format( Header(filename, 'utf-8')), ) mixed.attach(app) base = mixed if pgp: logger.debug("Securing Email with PGP Encryption") # Set our header information to include in the encryption base['From'] = formataddr( (None, from_addr[1]), charset='utf-8') base['To'] = formataddr((None, to_addr), charset='utf-8') base['Subject'] = \ Header(subject, NotifyEmail._get_charset(subject)) # Apply our encryption encrypted_content = \ pgp.encrypt(base.as_string(), to_addr) if not encrypted_content: # Unable to send notification msg = 'Unable to encrypt email via PGP' logger.warning(msg) raise AppriseEmailException(msg) # prepare our messsage base = MIMEMultipart( "encrypted", protocol="application/pgp-encrypted") # Store Autocrypt header (DeltaChat Support) base.add_header( "Autocrypt", "addr=%s; prefer-encrypt=mutual" % formataddr( (False, to_addr), charset='utf-8')) # Set Encryption Info Part enc_payload = MIMEText("Version: 1", "plain") enc_payload.set_type("application/pgp-encrypted") base.attach(enc_payload) enc_payload = MIMEBase("application", "octet-stream") enc_payload.set_payload(encrypted_content) base.attach(enc_payload) # Apply any provided custom headers for k, v in headers.items(): base[k] = Header(v, NotifyEmail._get_charset(v)) base['Subject'] = \ Header(subject, NotifyEmail._get_charset(subject)) base['From'] = formataddr(from_addr, charset='utf-8') base['To'] = formataddr((to_name, to_addr), charset='utf-8') base['Message-ID'] = make_msgid(domain=smtp_host) base['Date'] = \ datetime.now(timezone.utc)\ .strftime("%a, %d %b %Y %H:%M:%S +0000") if cc: base['Cc'] = ','.join(_cc) if reply_to: base['Reply-To'] = ','.join(_reply_to) yield EmailMessage( recipient=to_addr, to_addrs=[to_addr] + list(_cc) + list(_bcc), body=base.as_string())