mirror of
https://github.com/janeczku/calibre-web
synced 2024-12-26 01:50:31 +00:00
589 lines
24 KiB
Python
589 lines
24 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) 2018-2019 OzzieIsaacs, bodybybuddha, janeczku
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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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from __future__ import division, print_function, unicode_literals
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import sys
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import os
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import re
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import smtplib
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import socket
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import time
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import threading
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from glob import glob
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from shutil import copyfile
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from datetime import datetime
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from sqlalchemy.exc import OperationalError
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try:
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from StringIO import StringIO
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from email.MIMEBase import MIMEBase
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from email.MIMEMultipart import MIMEMultipart
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from email.MIMEText import MIMEText
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except ImportError:
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from io import StringIO
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from email.mime.base import MIMEBase
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from email import encoders
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from email.utils import formatdate
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from email.utils import make_msgid
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from email.generator import Generator
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from flask_babel import gettext as _
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from . import db, logger, config
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from .subproc_wrapper import process_open
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from . import gdriveutils
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log = logger.create()
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chunksize = 8192
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# task 'status' consts
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STAT_WAITING = 0
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STAT_FAIL = 1
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STAT_STARTED = 2
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STAT_FINISH_SUCCESS = 3
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#taskType consts
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TASK_EMAIL = 1
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TASK_CONVERT = 2
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TASK_UPLOAD = 3
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TASK_CONVERT_ANY = 4
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RET_FAIL = 0
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RET_SUCCESS = 1
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def _get_main_thread():
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for t in threading.enumerate():
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if t.__class__.__name__ == '_MainThread':
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return t
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raise Exception("main thread not found?!")
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# For gdrive download book from gdrive to calibredir (temp dir for books), read contents in both cases and append
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# it in MIME Base64 encoded to
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def get_attachment(bookpath, filename):
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"""Get file as MIMEBase message"""
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calibrepath = config.config_calibre_dir
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if config.config_use_google_drive:
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df = gdriveutils.getFileFromEbooksFolder(bookpath, filename)
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if df:
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datafile = os.path.join(calibrepath, bookpath, filename)
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if not os.path.exists(os.path.join(calibrepath, bookpath)):
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os.makedirs(os.path.join(calibrepath, bookpath))
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df.GetContentFile(datafile)
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else:
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return None
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file_ = open(datafile, 'rb')
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data = file_.read()
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file_.close()
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os.remove(datafile)
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else:
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try:
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file_ = open(os.path.join(calibrepath, bookpath, filename), 'rb')
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data = file_.read()
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file_.close()
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except IOError as e:
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log.exception(e) # traceback.print_exc()
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log.error(u'The requested file could not be read. Maybe wrong permissions?')
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return None
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attachment = MIMEBase('application', 'octet-stream')
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attachment.set_payload(data)
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encoders.encode_base64(attachment)
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attachment.add_header('Content-Disposition', 'attachment',
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filename=filename)
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return attachment
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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('send: %r', 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(self, *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 str(value) + ' %'
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else:
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return "100 %"
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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 email_SSL(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 for all worker tasks in the background
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class WorkerThread(threading.Thread):
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def __init__(self):
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threading.Thread.__init__(self)
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self.status = 0
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self.current = 0
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self.last = 0
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self.queue = list()
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self.UIqueue = list()
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self.asyncSMTP = None
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self.id = 0
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self.doLock = threading.Lock()
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# Main thread loop starting the different tasks
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def run(self):
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main_thread = _get_main_thread()
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while main_thread.is_alive():
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try:
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self.doLock.acquire()
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if self.current != self.last:
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index = self.current
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self.doLock.release()
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if self.queue[index]['taskType'] == TASK_EMAIL:
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self._send_raw_email()
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if self.queue[index]['taskType'] == TASK_CONVERT:
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self._convert_any_format()
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if self.queue[index]['taskType'] == TASK_CONVERT_ANY:
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self._convert_any_format()
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# TASK_UPLOAD is handled implicitly
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self.doLock.acquire()
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self.current += 1
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if self.current > self.last:
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self.current = self.last
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self.doLock.release()
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else:
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self.doLock.release()
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except Exception as e:
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log.exception(e)
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self.doLock.release()
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if main_thread.is_alive():
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time.sleep(1)
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def get_send_status(self):
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if self.asyncSMTP:
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return self.asyncSMTP.getTransferStatus()
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else:
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return "0 %"
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def _delete_completed_tasks(self):
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for index, task in reversed(list(enumerate(self.UIqueue))):
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if task['progress'] == "100 %":
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# delete tasks
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self.queue.pop(index)
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self.UIqueue.pop(index)
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# if we are deleting entries before the current index, adjust the index
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if index <= self.current and self.current:
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self.current -= 1
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self.last = len(self.queue)
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def get_taskstatus(self):
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self.doLock.acquire()
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if self.current < len(self.queue):
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if self.UIqueue[self.current]['stat'] == STAT_STARTED:
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if self.queue[self.current]['taskType'] == TASK_EMAIL:
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self.UIqueue[self.current]['progress'] = self.get_send_status()
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self.UIqueue[self.current]['formRuntime'] = datetime.now() - self.queue[self.current]['starttime']
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self.UIqueue[self.current]['rt'] = self.UIqueue[self.current]['formRuntime'].days*24*60 \
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+ self.UIqueue[self.current]['formRuntime'].seconds \
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+ self.UIqueue[self.current]['formRuntime'].microseconds
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self.doLock.release()
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return self.UIqueue
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def _convert_any_format(self):
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# convert book, and upload in case of google drive
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self.doLock.acquire()
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index = self.current
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self.doLock.release()
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self.UIqueue[index]['stat'] = STAT_STARTED
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self.queue[index]['starttime'] = datetime.now()
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self.UIqueue[index]['formStarttime'] = self.queue[index]['starttime']
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curr_task = self.queue[index]['taskType']
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filename = self._convert_ebook_format()
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if filename:
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if config.config_use_google_drive:
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gdriveutils.updateGdriveCalibreFromLocal()
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if curr_task == TASK_CONVERT:
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self.add_email(self.queue[index]['settings']['subject'], self.queue[index]['path'],
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filename, self.queue[index]['settings'], self.queue[index]['kindle'],
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self.UIqueue[index]['user'], self.queue[index]['title'],
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self.queue[index]['settings']['body'])
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def _convert_ebook_format(self):
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error_message = None
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self.doLock.acquire()
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index = self.current
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self.doLock.release()
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file_path = self.queue[index]['file_path']
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bookid = self.queue[index]['bookid']
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format_old_ext = u'.' + self.queue[index]['settings']['old_book_format'].lower()
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format_new_ext = u'.' + self.queue[index]['settings']['new_book_format'].lower()
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# check to see if destination format already exists -
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# if it does - mark the conversion task as complete and return a success
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# this will allow send to kindle workflow to continue to work
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if os.path.isfile(file_path + format_new_ext):
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log.info("Book id %d already converted to %s", bookid, format_new_ext)
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cur_book = db.session.query(db.Books).filter(db.Books.id == bookid).first()
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self.queue[index]['path'] = file_path
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self.queue[index]['title'] = cur_book.title
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self._handleSuccess()
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return file_path + format_new_ext
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else:
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log.info("Book id %d - target format of %s does not exist. Moving forward with convert.",
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bookid,
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format_new_ext)
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if config.config_kepubifypath and format_old_ext == '.epub' and format_new_ext == '.kepub':
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check, error_message = self._convert_kepubify(file_path,
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format_old_ext,
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format_new_ext,
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index)
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else:
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# check if calibre converter-executable is existing
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if not os.path.exists(config.config_converterpath):
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# ToDo Text is not translated
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self._handleError(_(u"Calibre ebook-convert %(tool)s not found", tool=config.config_converterpath))
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return
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check, error_message = self._convert_calibre(file_path, format_old_ext, format_new_ext, index)
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if check == 0:
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cur_book = db.session.query(db.Books).filter(db.Books.id == bookid).first()
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if os.path.isfile(file_path + format_new_ext):
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new_format = db.Data(name=cur_book.data[0].name,
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book_format=self.queue[index]['settings']['new_book_format'].upper(),
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book=bookid, uncompressed_size=os.path.getsize(file_path + format_new_ext))
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cur_book.data.append(new_format)
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try:
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db.session.commit()
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except OperationalError as e:
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db.session.rollback()
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log.error("Database error: %s", e)
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self._handleError(_(u"Database error: %(error)s.", error=e))
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return
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self.queue[index]['path'] = cur_book.path
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self.queue[index]['title'] = cur_book.title
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if config.config_use_google_drive:
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os.remove(file_path + format_old_ext)
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self._handleSuccess()
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return file_path + format_new_ext
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else:
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error_message = format_new_ext.upper() + ' format not found on disk'
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log.info("ebook converter failed with error while converting book")
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if not error_message:
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error_message = 'Ebook converter failed with unknown error'
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self._handleError(error_message)
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return
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def _convert_calibre(self, file_path, format_old_ext, format_new_ext, index):
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try:
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# Linux py2.7 encode as list without quotes no empty element for parameters
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# linux py3.x no encode and as list without quotes no empty element for parameters
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# windows py2.7 encode as string with quotes empty element for parameters is okay
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# windows py 3.x no encode and as string with quotes empty element for parameters is okay
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# separate handling for windows and linux
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quotes = [1, 2]
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command = [config.config_converterpath, (file_path + format_old_ext),
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(file_path + format_new_ext)]
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quotes_index = 3
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if config.config_calibre:
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parameters = config.config_calibre.split(" ")
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for param in parameters:
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command.append(param)
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quotes.append(quotes_index)
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quotes_index += 1
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p = process_open(command, quotes)
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except OSError as e:
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return 1, _(u"Ebook-converter failed: %(error)s", error=e)
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while p.poll() is None:
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nextline = p.stdout.readline()
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if os.name == 'nt' and sys.version_info < (3, 0):
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nextline = nextline.decode('windows-1252')
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elif os.name == 'posix' and sys.version_info < (3, 0):
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nextline = nextline.decode('utf-8')
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log.debug(nextline.strip('\r\n'))
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# parse progress string from calibre-converter
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progress = re.search(r"(\d+)%\s.*", nextline)
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if progress:
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self.UIqueue[index]['progress'] = progress.group(1) + ' %'
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# process returncode
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check = p.returncode
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calibre_traceback = p.stderr.readlines()
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for ele in calibre_traceback:
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if sys.version_info < (3, 0):
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ele = ele.decode('utf-8')
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log.debug(ele.strip('\n'))
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if not ele.startswith('Traceback') and not ele.startswith(' File'):
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error_message = "Calibre failed with error: %s" % ele.strip('\n')
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return check, error_message
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def _convert_kepubify(self, file_path, format_old_ext, format_new_ext, index):
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quotes = [1, 3]
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command = [config.config_kepubifypath, (file_path + format_old_ext), '-o', os.path.dirname(file_path)]
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try:
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p = process_open(command, quotes)
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except OSError as e:
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return 1, _(u"Kepubify-converter failed: %(error)s", error=e)
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self.UIqueue[index]['progress'] = '1 %'
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while True:
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nextline = p.stdout.readlines()
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nextline = [x.strip('\n') for x in nextline if x != '\n']
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if sys.version_info < (3, 0):
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nextline = [x.decode('utf-8') for x in nextline]
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for line in nextline:
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log.debug(line)
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if p.poll() is not None:
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break
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# ToD Handle
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# process returncode
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check = p.returncode
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# move file
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if check == 0:
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converted_file = glob(os.path.join(os.path.dirname(file_path), "*.kepub.epub"))
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if len(converted_file) == 1:
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copyfile(converted_file[0], (file_path + format_new_ext))
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os.unlink(converted_file[0])
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else:
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return 1, _(u"Converted file not found or more than one file in folder %(folder)s",
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folder=os.path.dirname(file_path))
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return check, None
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def add_convert(self, file_path, bookid, user_name, taskMessage, settings, kindle_mail=None):
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self.doLock.acquire()
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if self.last >= 20:
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self._delete_completed_tasks()
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# progress, runtime, and status = 0
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self.id += 1
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task = TASK_CONVERT_ANY
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if kindle_mail:
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task = TASK_CONVERT
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self.queue.append({'file_path':file_path, 'bookid':bookid, 'starttime': 0, 'kindle': kindle_mail,
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'taskType': task, 'settings':settings})
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self.UIqueue.append({'user': user_name, 'formStarttime': '', 'progress': " 0 %", 'taskMess': taskMessage,
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'runtime': '0 s', 'stat': STAT_WAITING,'id': self.id, 'taskType': task } )
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self.last=len(self.queue)
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self.doLock.release()
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def add_email(self, subject, filepath, attachment, settings, recipient, user_name, taskMessage,
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text):
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# if more than 20 entries in the list, clean the list
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self.doLock.acquire()
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if self.last >= 20:
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self._delete_completed_tasks()
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# progress, runtime, and status = 0
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self.id += 1
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self.queue.append({'subject':subject, 'attachment':attachment, 'filepath':filepath,
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'settings':settings, 'recipent':recipient, 'starttime': 0,
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'taskType': TASK_EMAIL, 'text':text})
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self.UIqueue.append({'user': user_name, 'formStarttime': '', 'progress': " 0 %", 'taskMess': taskMessage,
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'runtime': '0 s', 'stat': STAT_WAITING,'id': self.id, 'taskType': TASK_EMAIL })
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self.last=len(self.queue)
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self.doLock.release()
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def add_upload(self, user_name, taskMessage):
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# if more than 20 entries in the list, clean the list
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self.doLock.acquire()
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if self.last >= 20:
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self._delete_completed_tasks()
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# progress=100%, runtime=0, and status finished
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log.debug("Last " + str(self.last))
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log.debug("Current " + str(self.current))
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log.debug("id" + str(self.id))
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self.id += 1
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starttime = datetime.now()
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self.queue.append({'starttime': starttime, 'taskType': TASK_UPLOAD})
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self.UIqueue.append({'user': user_name, 'formStarttime': starttime, 'progress': "100 %", 'taskMess': taskMessage,
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|
'runtime': '0 s', 'stat': STAT_FINISH_SUCCESS,'id': self.id, 'taskType': TASK_UPLOAD})
|
|
self.last=len(self.queue)
|
|
self.doLock.release()
|
|
|
|
def _send_raw_email(self):
|
|
self.doLock.acquire()
|
|
index = self.current
|
|
self.doLock.release()
|
|
self.queue[index]['starttime'] = datetime.now()
|
|
self.UIqueue[index]['formStarttime'] = self.queue[index]['starttime']
|
|
self.UIqueue[index]['stat'] = STAT_STARTED
|
|
obj=self.queue[index]
|
|
# create MIME message
|
|
msg = MIMEMultipart()
|
|
msg['Subject'] = self.queue[index]['subject']
|
|
msg['Message-Id'] = make_msgid('calibre-web')
|
|
msg['Date'] = formatdate(localtime=True)
|
|
text = self.queue[index]['text']
|
|
msg.attach(MIMEText(text.encode('UTF-8'), 'plain', 'UTF-8'))
|
|
if obj['attachment']:
|
|
result = get_attachment(obj['filepath'], obj['attachment'])
|
|
if result:
|
|
msg.attach(result)
|
|
else:
|
|
self._handleError(u"Attachment not found")
|
|
return
|
|
|
|
msg['From'] = obj['settings']["mail_from"]
|
|
msg['To'] = obj['recipent']
|
|
|
|
use_ssl = int(obj['settings'].get('mail_use_ssl', 0))
|
|
try:
|
|
# convert MIME message to string
|
|
fp = StringIO()
|
|
gen = Generator(fp, mangle_from_=False)
|
|
gen.flatten(msg)
|
|
msg = fp.getvalue()
|
|
|
|
# send email
|
|
timeout = 600 # set timeout to 5mins
|
|
|
|
# redirect output to logfile on python2 pn python3 debugoutput is caught with overwritten
|
|
# _print_debug function
|
|
if sys.version_info < (3, 0):
|
|
org_smtpstderr = smtplib.stderr
|
|
smtplib.stderr = logger.StderrLogger('worker.smtp')
|
|
|
|
if use_ssl == 2:
|
|
self.asyncSMTP = email_SSL(obj['settings']["mail_server"], obj['settings']["mail_port"], timeout=timeout)
|
|
else:
|
|
self.asyncSMTP = email(obj['settings']["mail_server"], obj['settings']["mail_port"], timeout=timeout)
|
|
|
|
# link to logginglevel
|
|
if logger.is_debug_enabled():
|
|
self.asyncSMTP.set_debuglevel(1)
|
|
if use_ssl == 1:
|
|
self.asyncSMTP.starttls()
|
|
if obj['settings']["mail_password"]:
|
|
self.asyncSMTP.login(str(obj['settings']["mail_login"]), str(obj['settings']["mail_password"]))
|
|
self.asyncSMTP.sendmail(obj['settings']["mail_from"], obj['recipent'], msg)
|
|
self.asyncSMTP.quit()
|
|
self._handleSuccess()
|
|
|
|
if sys.version_info < (3, 0):
|
|
smtplib.stderr = org_smtpstderr
|
|
|
|
except (MemoryError) as e:
|
|
self._handleError(u'Error sending email: ' + e.message)
|
|
return None
|
|
except (smtplib.SMTPException, smtplib.SMTPAuthenticationError) as e:
|
|
if hasattr(e, "smtp_error"):
|
|
text = e.smtp_error.decode('utf-8').replace("\n",'. ')
|
|
elif hasattr(e, "message"):
|
|
text = e.message
|
|
else:
|
|
text = ''
|
|
self._handleError(u'Error sending email: ' + text)
|
|
return None
|
|
except (socket.error) as e:
|
|
self._handleError(u'Error sending email: ' + e.strerror)
|
|
return None
|
|
|
|
def _handleError(self, error_message):
|
|
log.error(error_message)
|
|
self.doLock.acquire()
|
|
index = self.current
|
|
self.doLock.release()
|
|
self.UIqueue[index]['stat'] = STAT_FAIL
|
|
self.UIqueue[index]['progress'] = "100 %"
|
|
self.UIqueue[index]['formRuntime'] = datetime.now() - self.queue[index]['starttime']
|
|
self.UIqueue[index]['message'] = error_message
|
|
|
|
def _handleSuccess(self):
|
|
self.doLock.acquire()
|
|
index = self.current
|
|
self.doLock.release()
|
|
self.UIqueue[index]['stat'] = STAT_FINISH_SUCCESS
|
|
self.UIqueue[index]['progress'] = "100 %"
|
|
self.UIqueue[index]['formRuntime'] = datetime.now() - self.queue[index]['starttime']
|
|
|
|
|
|
def get_taskstatus():
|
|
return _worker.get_taskstatus()
|
|
|
|
|
|
def add_email(subject, filepath, attachment, settings, recipient, user_name, taskMessage, text):
|
|
return _worker.add_email(subject, filepath, attachment, settings, recipient, user_name, taskMessage, text)
|
|
|
|
|
|
def add_upload(user_name, taskMessage):
|
|
return _worker.add_upload(user_name, taskMessage)
|
|
|
|
|
|
def add_convert(file_path, bookid, user_name, taskMessage, settings, kindle_mail=None):
|
|
return _worker.add_convert(file_path, bookid, user_name, taskMessage, settings, kindle_mail)
|
|
|
|
|
|
_worker = WorkerThread()
|
|
_worker.start()
|