from __future__ import division, print_function, unicode_literals import sys import os import smtplib import threading import socket try: from StringIO import StringIO from email.MIMEBase import MIMEBase from email.MIMEMultipart import MIMEMultipart from email.MIMEText import MIMEText except ImportError: from io import StringIO from email.mime.base import MIMEBase from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText from email import encoders from email.utils import formatdate, make_msgid from email.generator import Generator from cps.services.worker import CalibreTask from cps import logger, config from cps import gdriveutils log = logger.create() CHUNKSIZE = 8192 # Class for sending email with ability to get current progress class EmailBase: transferSize = 0 progress = 0 def data(self, msg): self.transferSize = len(msg) (code, resp) = smtplib.SMTP.data(self, msg) self.progress = 0 return (code, resp) def send(self, strg): """Send `strg' to the server.""" log.debug('send: %r', strg[:300]) if hasattr(self, 'sock') and self.sock: try: if self.transferSize: lock=threading.Lock() lock.acquire() self.transferSize = len(strg) lock.release() for i in range(0, self.transferSize, CHUNKSIZE): if isinstance(strg, bytes): self.sock.send((strg[i:i + CHUNKSIZE])) else: self.sock.send((strg[i:i + CHUNKSIZE]).encode('utf-8')) lock.acquire() self.progress = i lock.release() else: self.sock.sendall(strg.encode('utf-8')) except socket.error: self.close() raise smtplib.SMTPServerDisconnected('Server not connected') else: raise smtplib.SMTPServerDisconnected('please run connect() first') @classmethod def _print_debug(cls, *args): log.debug(args) def getTransferStatus(self): if self.transferSize: lock2 = threading.Lock() lock2.acquire() value = int((float(self.progress) / float(self.transferSize))*100) lock2.release() return value / 100 else: return 1 # Class for sending email with ability to get current progress, derived from emailbase class class Email(EmailBase, smtplib.SMTP): def __init__(self, *args, **kwargs): smtplib.SMTP.__init__(self, *args, **kwargs) # Class for sending ssl encrypted email with ability to get current progress, , derived from emailbase class class EmailSSL(EmailBase, smtplib.SMTP_SSL): def __init__(self, *args, **kwargs): smtplib.SMTP_SSL.__init__(self, *args, **kwargs) class TaskEmail(CalibreTask): def __init__(self, subject, filepath, attachment, settings, recipient, taskMessage, text, internal=False): super(TaskEmail, self).__init__(taskMessage) self.subject = subject self.attachment = attachment self.settings = settings self.filepath = filepath self.recipent = recipient self.text = text self.asyncSMTP = None self.results = dict() def run(self, worker_thread): # create MIME message msg = MIMEMultipart() msg['Subject'] = self.subject msg['Message-Id'] = make_msgid('calibre-web') msg['Date'] = formatdate(localtime=True) text = self.text msg.attach(MIMEText(text.encode('UTF-8'), 'plain', 'UTF-8')) if self.attachment: result = self._get_attachment(self.filepath, self.attachment) if result: msg.attach(result) else: self._handleError(u"Attachment not found") return msg['From'] = self.settings["mail_from"] msg['To'] = self.recipent use_ssl = int(self.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 = EmailSSL(self.settings["mail_server"], self.settings["mail_port"], timeout=timeout) else: self.asyncSMTP = Email(self.settings["mail_server"], self.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 self.settings["mail_password"]: self.asyncSMTP.login(str(self.settings["mail_login"]), str(self.settings["mail_password"])) self.asyncSMTP.sendmail(self.settings["mail_from"], self.recipent, msg) self.asyncSMTP.quit() self._handleSuccess() if sys.version_info < (3, 0): smtplib.stderr = org_smtpstderr except (MemoryError) as e: log.exception(e) self._handleError(u'MemoryError sending email: ' + str(e)) # 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 elif hasattr(e, "args"): text = '\n'.join(e.args) else: log.exception(e) text = '' self._handleError(u'Smtplib Error sending email: ' + text) # return None except (socket.error) as e: self._handleError(u'Socket Error sending email: ' + e.strerror) # return None @property def progress(self): if self.asyncSMTP is not None: return self.asyncSMTP.getTransferStatus() else: return self._progress @progress.setter def progress(self, x): """This gets explicitly set when handle(Success|Error) are called. In this case, remove the SMTP connection""" if x == 1: self.asyncSMTP = None self._progress = x @classmethod def _get_attachment(cls, bookpath, filename): """Get file as MIMEBase message""" calibrepath = config.config_calibre_dir if config.config_use_google_drive: df = gdriveutils.getFileFromEbooksFolder(bookpath, filename) if df: datafile = os.path.join(calibrepath, bookpath, filename) if not os.path.exists(os.path.join(calibrepath, bookpath)): os.makedirs(os.path.join(calibrepath, bookpath)) df.GetContentFile(datafile) else: return None file_ = open(datafile, 'rb') data = file_.read() file_.close() os.remove(datafile) else: try: file_ = open(os.path.join(calibrepath, bookpath, filename), 'rb') data = file_.read() file_.close() except IOError as e: log.exception(e) log.error(u'The requested file could not be read. Maybe wrong permissions?') return None attachment = MIMEBase('application', 'octet-stream') attachment.set_payload(data) encoders.encode_base64(attachment) attachment.add_header('Content-Disposition', 'attachment', filename=filename) return attachment @property def name(self): return "Email"