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242 lines
8.0 KiB
Python
242 lines
8.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import print_function
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import smtplib
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import threading
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from datetime import datetime
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import logging
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import time
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import socket
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import sys
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from email.generator import Generator
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import web
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from flask_babel import gettext as _
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import re
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try:
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from StringIO import StringIO
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except ImportError as e:
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from io import StringIO
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chunksize = 8192
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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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class email(smtplib.SMTP):
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transferSize = 0
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progress = 0
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def __init__(self, *args, **kwargs):
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smtplib.SMTP.__init__(self, *args, **kwargs)
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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, str):
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"""Send `str' to the server."""
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if self.debuglevel > 0:
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print('send:', repr(str), file=sys.stderr)
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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(str)
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lock.release()
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for i in range(0, self.transferSize, chunksize):
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self.sock.send(str[i:i+chunksize])
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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(str)
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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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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 = round(float(self.progress) / float(self.transferSize),2)*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 email_SSL(email):
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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 EMailThread(threading.Thread):
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def __init__(self):
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self._stopevent = threading.Event()
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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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def run(self):
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while not self._stopevent.isSet():
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doLock = threading.Lock()
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doLock.acquire()
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if self.current != self.last:
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doLock.release()
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self.send_raw_email()
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self.current += 1
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else:
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doLock.release()
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time.sleep(1)
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def stop(self):
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self._stopevent.set()
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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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# muss gelockt werden
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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 self.current >= index:
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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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if self.current < len(self.queue):
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if self.queue[self.current]['status'] == STAT_STARTED:
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self.UIqueue[self.current]['progress'] = self.get_send_status()
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self.UIqueue[self.current]['runtime'] = self._formatRuntime(
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datetime.now() - self.queue[self.current]['starttime'])
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return self.UIqueue
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def add_email(self, data, settings, recipient, user_name, type):
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# if more than 50 entries in the list, clean the list
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addLock = threading.Lock()
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addLock.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.queue.append({'data':data, 'settings':settings, 'recipent':recipient, 'starttime': 0,
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'status': STAT_WAITING})
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self.UIqueue.append({'user': user_name, 'formStarttime': '', 'progress': " 0 %", 'type': type,
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'runtime': '0 s', 'status': _('Waiting') })
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# access issue
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self.last=len(self.queue)
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addLock.release()
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def send_raw_email(self):
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obj=self.queue[self.current]
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# settings = ub.get_mail_settings()
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obj['data']['From'] = obj['settings']["mail_from"]
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obj['data']['To'] = obj['recipent']
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use_ssl = int(obj['settings'].get('mail_use_ssl', 0))
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# convert MIME message to string
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fp = StringIO()
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gen = Generator(fp, mangle_from_=False)
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gen.flatten(obj['data'])
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obj['data'] = fp.getvalue()
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# send email
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try:
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timeout = 600 # set timeout to 5mins
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org_stderr = sys.stderr
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#org_stderr2 = smtplib.stderr
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sys.stderr = StderrLogger()
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#smtplib.stderr = StderrLogger()
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self.queue[self.current]['status'] = STAT_STARTED
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self.UIqueue[self.current]['status'] = _('Started')
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self.queue[self.current]['starttime'] = datetime.now()
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self.UIqueue[self.current]['formStarttime'] = self.queue[self.current]['starttime']
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if use_ssl == 2:
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self.asyncSMTP = email_SSL(obj['settings']["mail_server"], obj['settings']["mail_port"], timeout)
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else:
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self.asyncSMTP = email(obj['settings']["mail_server"], obj['settings']["mail_port"], timeout)
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# link to logginglevel
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if web.ub.config.config_log_level != logging.DEBUG:
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self.asyncSMTP.set_debuglevel(0)
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else:
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self.asyncSMTP.set_debuglevel(1)
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if use_ssl == 1:
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self.asyncSMTP.starttls()
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if obj['settings']["mail_password"]:
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self.asyncSMTP.login(str(obj['settings']["mail_login"]), str(obj['settings']["mail_password"]))
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self.asyncSMTP.sendmail(obj['settings']["mail_from"], obj['recipent'], obj['data'])
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self.asyncSMTP.quit()
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self.queue[self.current]['status'] = STAT_FINISH_SUCCESS
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self.UIqueue[self.current]['status'] = _('Finished')
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self.UIqueue[self.current]['progress'] = "100 %"
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self.UIqueue[self.current]['runtime'] = self._formatRuntime(
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datetime.now() - self.queue[self.current]['starttime'])
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sys.stderr = org_stderr
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#smtplib.stderr = org_stderr2
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except (socket.error, smtplib.SMTPRecipientsRefused, smtplib.SMTPException) as e:
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self.queue[self.current]['status'] = STAT_FAIL
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self.UIqueue[self.current]['status'] = _('Failed')
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self.UIqueue[self.current]['progress'] = "100 %"
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self.UIqueue[self.current]['runtime'] = self._formatRuntime(
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datetime.now() - self.queue[self.current]['starttime'])
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web.app.logger.error(e)
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return None
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def _formatRuntime(self, runtime):
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val = re.split('\:|\.', str(runtime))[0:3]
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erg = list()
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for v in val:
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if int(v) > 0:
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erg.append(v)
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retVal = (':'.join(erg)).lstrip('0') + ' s'
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if retVal == ' s':
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retVal = '0 s'
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return retVal
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class StderrLogger(object):
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buffer = ''
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def __init__(self):
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self.logger = web.app.logger
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def write(self, message):
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if message == '\n':
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self.logger.debug(self.buffer)
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print(self.buffer)
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self.buffer = ''
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else:
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self.buffer += message
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