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286 lines
11 KiB
Python
286 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2020 pwr
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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 <http://www.gnu.org/licenses/>.
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import os
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import smtplib
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import ssl
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import threading
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import socket
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import mimetypes
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from io import StringIO
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from email.message import EmailMessage
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from email.utils import formatdate, parseaddr
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from email.generator import Generator
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from flask_babel import lazy_gettext as N_
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from cps.services.worker import CalibreTask
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from cps.services import gmail
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from cps.embed_helper import do_calibre_export
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from cps import logger, config
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from cps import gdriveutils
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import uuid
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log = logger.create()
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CHUNKSIZE = 8192
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# Class for sending email with ability to get current progress
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class EmailBase:
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transferSize = 0
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progress = 0
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def data(self, msg):
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self.transferSize = len(msg)
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(code, resp) = smtplib.SMTP.data(self, msg)
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self.progress = 0
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return (code, resp)
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def send(self, strg):
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"""Send `strg' to the server."""
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log.debug_no_auth('send: {}'.format(strg[:300]))
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if hasattr(self, 'sock') and self.sock:
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try:
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if self.transferSize:
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lock=threading.Lock()
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lock.acquire()
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self.transferSize = len(strg)
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lock.release()
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for i in range(0, self.transferSize, CHUNKSIZE):
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if isinstance(strg, bytes):
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self.sock.send((strg[i:i + CHUNKSIZE]))
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else:
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self.sock.send((strg[i:i + CHUNKSIZE]).encode('utf-8'))
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lock.acquire()
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self.progress = i
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lock.release()
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else:
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self.sock.sendall(strg.encode('utf-8'))
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except socket.error:
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self.close()
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raise smtplib.SMTPServerDisconnected('Server not connected')
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else:
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raise smtplib.SMTPServerDisconnected('please run connect() first')
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@classmethod
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def _print_debug(cls, *args):
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log.debug(args)
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def getTransferStatus(self):
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if self.transferSize:
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lock2 = threading.Lock()
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lock2.acquire()
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value = int((float(self.progress) / float(self.transferSize))*100)
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lock2.release()
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return value / 100
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else:
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return 1
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# Class for sending email with ability to get current progress, derived from emailbase class
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class Email(EmailBase, smtplib.SMTP):
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def __init__(self, *args, **kwargs):
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smtplib.SMTP.__init__(self, *args, **kwargs)
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# Class for sending ssl encrypted email with ability to get current progress, , derived from emailbase class
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class EmailSSL(EmailBase, smtplib.SMTP_SSL):
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def __init__(self, *args, **kwargs):
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smtplib.SMTP_SSL.__init__(self, *args, **kwargs)
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class TaskEmail(CalibreTask):
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def __init__(self, subject, filepath, attachment, settings, recipient, task_message, text, id=0, internal=False):
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super(TaskEmail, self).__init__(task_message)
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self.subject = subject
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self.attachment = attachment
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self.settings = settings
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self.filepath = filepath
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self.recipient = recipient
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self.text = text
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self.asyncSMTP = None
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self.book_id = id
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self.results = dict()
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# from calibre code:
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# https://github.com/kovidgoyal/calibre/blob/731ccd92a99868de3e2738f65949f19768d9104c/src/calibre/utils/smtp.py#L60
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def get_msgid_domain(self):
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try:
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# Parse out the address from the From line, and then the domain from that
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from_email = parseaddr(self.settings["mail_from"])[1]
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msgid_domain = from_email.partition('@')[2].strip()
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# This can sometimes sneak through parseaddr if the input is malformed
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msgid_domain = msgid_domain.rstrip('>').strip()
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except Exception:
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msgid_domain = ''
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return msgid_domain or 'calibre-web.com'
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def prepare_message(self):
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message = EmailMessage()
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# message = MIMEMultipart()
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message['From'] = self.settings["mail_from"]
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message['To'] = self.recipient
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message['Subject'] = self.subject
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message['Date'] = formatdate(localtime=True)
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message['Message-Id'] = "{}@{}".format(uuid.uuid4(), self.get_msgid_domain())
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message.set_content(self.text.encode('UTF-8'), "text", "plain")
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if self.attachment:
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data = self._get_attachment(self.filepath, self.attachment)
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if data:
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# Set mimetype
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content_type, encoding = mimetypes.guess_type(self.attachment)
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if content_type is None or encoding is not None:
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content_type = 'application/octet-stream'
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main_type, sub_type = content_type.split('/', 1)
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message.add_attachment(data, maintype=main_type, subtype=sub_type, filename=self.attachment)
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else:
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self._handleError("Attachment not found")
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return
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return message
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def run(self, worker_thread):
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try:
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# create MIME message
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msg = self.prepare_message()
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if not msg:
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return
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if self.settings['mail_server_type'] == 0:
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self.send_standard_email(msg)
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else:
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self.send_gmail_email(msg)
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except MemoryError as e:
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log.error_or_exception(e, stacklevel=3)
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self._handleError('MemoryError sending e-mail: {}'.format(str(e)))
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except (smtplib.SMTPException, smtplib.SMTPAuthenticationError) as e:
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log.error_or_exception(e, stacklevel=3)
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if hasattr(e, "smtp_error"):
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text = e.smtp_error.decode('utf-8').replace("\n", '. ')
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elif hasattr(e, "message"):
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text = e.message
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elif hasattr(e, "args"):
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text = '\n'.join(e.args)
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else:
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text = ''
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self._handleError('Smtplib Error sending e-mail: {}'.format(text))
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except (socket.error) as e:
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log.error_or_exception(e, stacklevel=3)
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self._handleError('Socket Error sending e-mail: {}'.format(e.strerror))
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except Exception as ex:
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log.error_or_exception(ex, stacklevel=3)
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self._handleError('Error sending e-mail: {}'.format(ex))
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def send_standard_email(self, msg):
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use_ssl = int(self.settings.get('mail_use_ssl', 0))
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timeout = 600 # set timeout to 5mins
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# on python3 debugoutput is caught with overwritten _print_debug function
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log.debug("Start sending e-mail")
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if use_ssl == 2:
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context = ssl.create_default_context()
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self.asyncSMTP = EmailSSL(self.settings["mail_server"], self.settings["mail_port"],
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timeout=timeout, context=context)
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else:
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self.asyncSMTP = Email(self.settings["mail_server"], self.settings["mail_port"], timeout=timeout)
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# link to logginglevel
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if logger.is_debug_enabled():
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self.asyncSMTP.set_debuglevel(1)
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if use_ssl == 1:
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context = ssl.create_default_context()
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self.asyncSMTP.starttls(context=context)
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if self.settings["mail_password_e"]:
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self.asyncSMTP.login(str(self.settings["mail_login"]), str(self.settings["mail_password_e"]))
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# Convert message to something to send
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fp = StringIO()
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gen = Generator(fp, mangle_from_=False)
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gen.flatten(msg)
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self.asyncSMTP.sendmail(self.settings["mail_from"], self.recipient, fp.getvalue())
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self.asyncSMTP.quit()
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self._handleSuccess()
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log.debug("E-mail send successfully")
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def send_gmail_email(self, message):
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gmail.send_messsage(self.settings.get('mail_gmail_token', None), message)
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self._handleSuccess()
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@property
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def progress(self):
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if self.asyncSMTP is not None:
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return self.asyncSMTP.getTransferStatus()
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else:
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return self._progress
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@progress.setter
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def progress(self, x):
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"""This gets explicitly set when handle(Success|Error) are called. In this case, remove the SMTP connection"""
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if x == 1:
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self.asyncSMTP = None
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self._progress = x
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def _get_attachment(self, book_path, filename):
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"""Get file as MIMEBase message"""
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calibre_path = config.get_book_path()
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extension = os.path.splitext(filename)[1][1:]
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if config.config_use_google_drive:
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df = gdriveutils.getFileFromEbooksFolder(book_path, filename)
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if df:
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datafile = os.path.join(calibre_path, book_path, filename)
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if not os.path.exists(os.path.join(calibre_path, book_path)):
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os.makedirs(os.path.join(calibre_path, book_path))
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df.GetContentFile(datafile)
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else:
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return None
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if config.config_binariesdir and config.config_embed_metadata:
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data_path, data_file = do_calibre_export(self.book_id, extension)
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datafile = os.path.join(data_path, data_file + "." + extension)
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with open(datafile, 'rb') as file_:
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data = file_.read()
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os.remove(datafile)
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else:
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datafile = os.path.join(calibre_path, book_path, filename)
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try:
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if config.config_binariesdir and config.config_embed_metadata:
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data_path, data_file = do_calibre_export(self.book_id, extension)
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datafile = os.path.join(data_path, data_file + "." + extension)
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with open(datafile, 'rb') as file_:
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data = file_.read()
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if config.config_binariesdir and config.config_embed_metadata:
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os.remove(datafile)
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except IOError as e:
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log.error_or_exception(e, stacklevel=3)
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log.error('The requested file could not be read. Maybe wrong permissions?')
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return None
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return data
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@property
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def name(self):
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return N_("E-mail")
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@property
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def is_cancellable(self):
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return False
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def __str__(self):
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return "E-mail {}, {}".format(self.name, self.subject)
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