608 lines
24 KiB
Python
608 lines
24 KiB
Python
# UI base class
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# Copyright (C) 2002-2018 John Goerzen & contributors.
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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 2 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, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import logging
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import logging.handlers
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import re
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import time
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import sys
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import traceback
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import threading
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from queue import Queue
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from collections import deque
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import offlineimap
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from offlineimap.error import OfflineImapError
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debugtypes = {'': 'Other offlineimap related sync messages',
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'imap': 'IMAP protocol debugging',
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'maildir': 'Maildir repository debugging',
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'thread': 'Threading debugging'}
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globalui = None
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def setglobalui(newui):
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"""Set the global ui object to be used for logging."""
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global globalui
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globalui = newui
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def getglobalui():
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"""Return the current ui object."""
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global globalui
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return globalui
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class UIBase:
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def __init__(self, config, loglevel=logging.INFO):
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self.config = config
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# Is this a 'dryrun'?
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self.dryrun = config.getdefaultboolean('general', 'dry-run', False)
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self.debuglist = []
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# list of debugtypes we are supposed to log
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self.debugmessages = {}
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# debugmessages in a deque(v) per thread(k)
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self.debugmsglen = 15
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self.threadaccounts = {}
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# dict linking active threads (k) to account names (v)
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self.acct_startimes = {}
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# linking active accounts with the time.time() when sync started
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self.logfile = None
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self.exc_queue = Queue()
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# saves all occuring exceptions, so we can output them at the end
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self.uidval_problem = False
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# at least one folder skipped due to UID validity problem
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# create logger with 'OfflineImap' app
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self.logger = logging.getLogger('OfflineImap')
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self.logger.setLevel(loglevel)
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self._log_con_handler = self.setup_consolehandler()
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"""The console handler (we need access to be able to lock it)."""
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# UTILS
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def setup_consolehandler(self):
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"""Backend specific console handler.
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Sets up things and adds them to self.logger.
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:returns: The logging.Handler() for console output"""
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# create console handler with a higher log level
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ch = logging.StreamHandler(sys.stdout)
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# ch.setLevel(logging.DEBUG)
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# create formatter and add it to the handlers
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self.formatter = logging.Formatter("%(message)s")
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ch.setFormatter(self.formatter)
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# add the handlers to the logger
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self.logger.addHandler(ch)
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self.logger.info(offlineimap.banner)
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return ch
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def setup_sysloghandler(self):
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"""Backend specific syslog handler."""
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# create syslog handler
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ch = logging.handlers.SysLogHandler('/dev/log')
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# create formatter and add it to the handlers
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self.formatter = logging.Formatter("%(message)s")
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ch.setFormatter(self.formatter)
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# add the handlers to the logger
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self.logger.addHandler(ch)
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def setlogfile(self, logfile):
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"""Create file handler which logs to file."""
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fh = logging.FileHandler(logfile, 'at')
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# fh.setLevel(logging.DEBUG)
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file_formatter = logging.Formatter("%(asctime)s %(levelname)s: "
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"%(message)s", '%Y-%m-%d %H:%M:%S')
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fh.setFormatter(file_formatter)
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self.logger.addHandler(fh)
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# write out more verbose initial info blurb on the log file
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p_ver = ".".join([str(x) for x in sys.version_info[0:3]])
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msg = "OfflineImap %s starting...\n Python: %s Platform: %s\n " \
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"Args: %s" % (offlineimap.__version__, p_ver, sys.platform,
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" ".join(sys.argv))
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record = logging.LogRecord('OfflineImap', logging.INFO, __file__,
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None, msg, None, None)
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fh.emit(record)
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def _msg(self, msg):
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"""Display a message."""
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# TODO: legacy function, rip out.
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self.info(msg)
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def info(self, msg):
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"""Display a message."""
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self.logger.info(msg)
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def warn(self, msg, minor=0):
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self.logger.warning(msg)
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def error(self, exc, exc_traceback=None, msg=None):
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"""Log a message at severity level ERROR.
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Log Exception 'exc' to error log, possibly prepended by a preceding
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error "msg", detailing at what point the error occurred.
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In debug mode, we also output the full traceback that occurred
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if one has been passed in via sys.info()[2].
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Also save the Exception to a stack that can be output at the end
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of the sync run when offlineiamp exits. It is recommended to
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always pass in exceptions if possible, so we can give the user
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the best debugging info.
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We are always pushing tracebacks to the exception queue to
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make them to be output at the end of the run to allow users
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pass sensible diagnostics to the developers or to solve
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problems by themselves.
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One example of such a call might be:
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ui.error(exc, sys.exc_info()[2], msg="While syncing Folder %s in "
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"repo %s")
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"""
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if msg:
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self.logger.error("ERROR: %s\n %s" % (msg, exc))
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else:
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self.logger.error("ERROR: %s" % exc)
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instant_traceback = exc_traceback
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if not self.debuglist:
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# only output tracebacks in debug mode
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instant_traceback = None
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# push exc on the queue for later output
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self.exc_queue.put((msg, exc, exc_traceback))
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if instant_traceback:
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self.logger.error(traceback.format_tb(instant_traceback))
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def registerthread(self, account):
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"""Register current thread as being associated with an account name."""
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cur_thread = threading.currentThread()
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if cur_thread in self.threadaccounts:
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# was already associated with an old account, update info
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self.debug('thread', "Register thread '%s' (previously '%s', now "
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"'%s')" % (cur_thread.getName(),
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self.getthreadaccount(cur_thread), account))
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else:
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self.debug('thread', "Register new thread '%s' (account '%s')" %
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(cur_thread.getName(), account))
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self.threadaccounts[cur_thread] = account
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def unregisterthread(self, thr):
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"""Unregister a thread as being associated with an account name."""
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if thr in self.threadaccounts:
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del self.threadaccounts[thr]
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self.debug('thread', "Unregister thread '%s'" % thr.getName())
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def getthreadaccount(self, thr=None):
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"""Get Account() for a thread (current if None)
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If no account has been registered with this thread, return 'None'."""
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if thr is None:
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thr = threading.currentThread()
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if thr in self.threadaccounts:
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return self.threadaccounts[thr]
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return None
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def debug(self, debugtype, msg):
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cur_thread = threading.currentThread()
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if cur_thread not in self.debugmessages:
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# deque(..., self.debugmsglen) would be handy but was
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# introduced in p2.6 only, so we'll need to work around and
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# shorten our debugmsg list manually :-(
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self.debugmessages[cur_thread] = deque()
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self.debugmessages[cur_thread].append("%s: %s" % (debugtype, msg))
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# Shorten queue if needed
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if len(self.debugmessages[cur_thread]) > self.debugmsglen:
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self.debugmessages[cur_thread].popleft()
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if debugtype in self.debuglist: # log if we are supposed to do so
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self.logger.debug("[%s]: %s" % (debugtype, msg))
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def add_debug(self, debugtype):
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global debugtypes
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if debugtype in debugtypes:
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if debugtype not in self.debuglist:
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self.debuglist.append(debugtype)
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self.debugging(debugtype)
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else:
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self.invaliddebug(debugtype)
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def debugging(self, debugtype):
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global debugtypes
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self.logger.debug("Now debugging for %s: %s" % (debugtype,
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debugtypes[debugtype]))
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def invaliddebug(self, debugtype):
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self.warn("Invalid debug type: %s" % debugtype)
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def getnicename(self, object):
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"""Return the type of a repository or Folder as string.
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(IMAP, Gmail, Maildir, etc...)"""
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prelimname = object.__class__.__name__.split('.')[-1]
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# Strip off extra stuff.
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return re.sub('(Folder|Repository)', '', prelimname)
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def isusable(self):
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"""Returns true if this UI object is usable in the current
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environment. For instance, an X GUI would return true if it's
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being run in X with a valid DISPLAY setting, and false otherwise."""
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return True
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# INPUT
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def getpass(self, username, config, errmsg=None):
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raise NotImplementedError("Prompting for a password is not supported"
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" in this UI backend.")
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def folderlist(self, folder_list):
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return ', '.join(["%s[%s]" %
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(self.getnicename(x), x.getname()) for x in folder_list])
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# WARNINGS
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def msgtoreadonly(self, destfolder, uid, content, flags):
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if self.config.has_option('general', 'ignore-readonly') and \
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self.config.getboolean('general', 'ignore-readonly'):
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return
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self.warn("Attempted to synchronize message %d to folder %s[%s], "
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"but that folder is read-only. The message will not be "
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"copied to that folder." % (
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uid, self.getnicename(destfolder), destfolder))
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def flagstoreadonly(self, destfolder, uidlist, flags):
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if self.config.has_option('general', 'ignore-readonly') and \
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self.config.getboolean('general', 'ignore-readonly'):
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return
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self.warn("Attempted to modify flags for messages %s in folder %s[%s], "
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"but that folder is read-only. No flags have been modified "
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"for that message." % (
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str(uidlist), self.getnicename(destfolder), destfolder))
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def labelstoreadonly(self, destfolder, uidlist, labels):
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if self.config.has_option('general', 'ignore-readonly') and \
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self.config.getboolean('general', 'ignore-readonly'):
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return
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self.warn("Attempted to modify labels for messages %s in folder %s[%s], "
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"but that folder is read-only. No labels have been modified "
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"for that message." % (
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str(uidlist), self.getnicename(destfolder), destfolder))
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def deletereadonly(self, destfolder, uidlist):
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if self.config.has_option('general', 'ignore-readonly') and \
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self.config.getboolean('general', 'ignore-readonly'):
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return
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self.warn("Attempted to delete messages %s in folder %s[%s], but that "
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"folder is read-only. No messages have been deleted in that "
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"folder." % (str(uidlist), self.getnicename(destfolder),
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destfolder))
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# MESSAGES
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def init_banner(self):
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"""Called when the UI starts. Must be called before any other UI
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call except isusable(). Displays the copyright banner. This is
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where the UI should do its setup -- TK, for instance, would
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create the application window here."""
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pass
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def connecting(self, reposname, hostname, port):
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"""Log 'Establishing connection to'."""
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if not self.logger.isEnabledFor(logging.INFO): return
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displaystr = ''
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hostname = hostname if hostname else ''
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port = "%s" % port if port else ''
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if hostname:
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displaystr = ' to %s:%s' % (hostname, port)
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self.logger.info("Establishing connection%s (%s)" %
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(displaystr, reposname))
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def acct(self, account):
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"""Output that we start syncing an account (and start counting)."""
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self.acct_startimes[account] = time.time()
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self.logger.info("*** Processing account %s" % account)
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def acctdone(self, account):
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"""Output that we finished syncing an account (in which time)."""
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sec = time.time() - self.acct_startimes[account]
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del self.acct_startimes[account]
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self.logger.info("*** Finished account '%s' in %d:%02d" %
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(account, sec // 60, sec % 60))
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def syncfolders(self, src_repo, dst_repo):
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"""Log 'Copying folder structure...'."""
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if self.logger.isEnabledFor(logging.DEBUG):
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self.debug('', "Copying folder structure from %s to %s" %
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(src_repo, dst_repo))
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# Folder syncing
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def makefolder(self, repo, foldername):
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"""Called when a folder is created."""
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prefix = "[DRYRUN] " if self.dryrun else ""
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self.info(("{0}Creating folder {1}[{2}]".format(
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prefix, foldername, repo)))
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def syncingfolder(self, srcrepos, srcfolder, destrepos, destfolder):
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"""Called when a folder sync operation is started."""
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self.logger.info("Syncing %s: %s -> %s" % (srcfolder,
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self.getnicename(srcrepos),
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self.getnicename(destrepos)))
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def skippingfolder(self, folder):
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"""Called when a folder sync operation is started."""
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self.logger.info("Skipping %s (not changed)" % folder)
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def validityproblem(self, folder):
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self.uidval_problem = True
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self.logger.warning("UID validity problem for folder %s (repo %s) "
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"(saved %d; got %d); skipping it. Please see FAQ "
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"and manual on how to handle this." %
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(folder, folder.getrepository(),
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folder.get_saveduidvalidity(), folder.get_uidvalidity()))
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def loadmessagelist(self, repos, folder):
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self.logger.debug("Loading message list for %s[%s]" % (
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self.getnicename(repos),
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folder))
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def messagelistloaded(self, repos, folder, count):
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self.logger.debug("Message list for %s[%s] loaded: %d messages" % (
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self.getnicename(repos), folder, count))
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# Message syncing
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def syncingmessages(self, sr, srcfolder, dr, dstfolder):
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self.logger.debug("Syncing messages %s[%s] -> %s[%s]" % (
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self.getnicename(sr), srcfolder,
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self.getnicename(dr), dstfolder))
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def ignorecopyingmessage(self, uid, src, destfolder):
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"""Output a log line stating which message is ignored."""
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self.logger.info("IGNORED: Copy message UID %s %s:%s -> %s" % (
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uid, src.repository, src, destfolder.repository))
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def copyingmessage(self, uid, num, num_to_copy, src, destfolder):
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"""Output a log line stating which message we copy."""
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self.logger.info("Copy message UID %s (%d/%d) %s:%s -> %s:%s" % (
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uid, num, num_to_copy, src.repository, src,
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destfolder.repository, destfolder))
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def deletingmessages(self, uidlist, destlist):
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ds = self.folderlist(destlist)
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prefix = "[DRYRUN] " if self.dryrun else ""
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self.info("{0}Deleting {1} messages ({2}) in {3}".format(
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prefix, len(uidlist),
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offlineimap.imaputil.uid_sequence(uidlist), ds))
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def addingflags(self, uidlist, flags, dest):
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self.logger.info("Adding flag %s to %d messages on %s" % (
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", ".join(flags), len(uidlist), dest))
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def deletingflags(self, uidlist, flags, dest):
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self.logger.info("Deleting flag %s from %d messages on %s" % (
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", ".join(flags), len(uidlist), dest))
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def addinglabels(self, uidlist, label, dest):
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self.logger.info("Adding label %s to %d messages on %s" % (
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label, len(uidlist), dest))
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def deletinglabels(self, uidlist, label, dest):
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self.logger.info("Deleting label %s from %d messages on %s" % (
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label, len(uidlist), dest))
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def settinglabels(self, uid, num, num_to_set, labels, dest):
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self.logger.info("Setting labels to message %d on %s (%d of %d): %s" % (
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uid, dest, num, num_to_set, ", ".join(labels)))
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def collectingdata(self, uidlist, source):
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if uidlist:
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self.logger.info("Collecting data from %d messages on %s" % (
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len(uidlist), source))
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else:
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self.logger.info("Collecting data from messages on %s" % source)
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def serverdiagnostics(self, repository, type):
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"""Connect to repository and output useful information for debugging."""
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conn = None
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self._msg("%s repository '%s': type '%s'" % (type, repository.name,
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self.getnicename(repository)))
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try:
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if hasattr(repository, 'gethost'): # IMAP
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self._msg("Host: %s Port: %s SSL: %s" % (repository.gethost(),
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repository.getport(), repository.getssl()))
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try:
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conn = repository.imapserver.acquireconnection()
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except OfflineImapError as e:
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self._msg("Failed to connect. Reason %s" % e)
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else:
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if 'ID' in conn.capabilities:
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self._msg("Server supports ID extension.")
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# TODO: Debug and make below working, it hangs Gmail
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# res_type, response = conn.id((
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# 'name', offlineimap.__productname__,
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# 'version', offlineimap.__version__))
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# self._msg("Server ID: %s %s" % (res_type, response[0]))
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self._msg("Server welcome string: %s" % str(conn.welcome))
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self._msg("Server capabilities: %s\n" % str(conn.capabilities))
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repository.imapserver.releaseconnection(conn)
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if type != 'Status':
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folderfilter = repository.getconf('folderfilter', None)
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if folderfilter:
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self._msg("folderfilter= %s\n" % folderfilter)
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folderincludes = repository.getconf('folderincludes', None)
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if folderincludes:
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self._msg("folderincludes= %s\n" % folderincludes)
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nametrans = repository.getconf('nametrans', None)
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if nametrans:
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self._msg("nametrans= %s\n" % nametrans)
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folders = repository.getfolders()
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foldernames = [(f.name, f.getvisiblename(), f.sync_this)
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for f in folders]
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folders = []
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for name, visiblename, sync_this in foldernames:
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syncstr = "" if sync_this else " (disabled)"
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if name == visiblename:
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folders.append("%s%s" % (name,
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syncstr))
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else:
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folders.append("%s -> %s%s" % (name,
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visiblename, syncstr))
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self._msg("Folderlist:\n %s\n" % "\n ".join(folders))
|
|
finally:
|
|
if conn: # release any existing IMAP connection
|
|
repository.imapserver.close()
|
|
|
|
def savemessage(self, debugtype, uid, flags, folder):
|
|
"""Output a log line stating that we save a msg."""
|
|
|
|
self.debug(debugtype, "Write mail '%s:%d' with flags %s" %
|
|
(folder, uid, repr(flags)))
|
|
|
|
# Threads
|
|
|
|
def getThreadDebugLog(self, thread):
|
|
if thread in self.debugmessages:
|
|
message = "\nLast %d debug messages logged for %s prior to exception:\n" \
|
|
% (len(self.debugmessages[thread]), thread.getName())
|
|
message += "\n".join(self.debugmessages[thread])
|
|
else:
|
|
message = "\nNo debug messages were logged for %s." % \
|
|
thread.getName()
|
|
return message
|
|
|
|
def delThreadDebugLog(self, thread):
|
|
if thread in self.debugmessages:
|
|
del self.debugmessages[thread]
|
|
|
|
def getThreadExceptionString(self, thread):
|
|
message = "Thread '%s' terminated with exception:\n%s" % \
|
|
(thread.getName(), thread.exit_stacktrace)
|
|
message += "\n" + self.getThreadDebugLog(thread)
|
|
return message
|
|
|
|
def threadException(self, thread):
|
|
"""Called when a thread has terminated with an exception.
|
|
The argument is the ExitNotifyThread that has so terminated."""
|
|
|
|
self.warn(self.getThreadExceptionString(thread))
|
|
self.delThreadDebugLog(thread)
|
|
self.terminate(100)
|
|
|
|
def terminate(self, exitstatus=0, errortitle=None, errormsg=None):
|
|
"""Called to terminate the application."""
|
|
|
|
# print any exceptions that have occurred over the run
|
|
if not self.exc_queue.empty():
|
|
self.warn("ERROR: Exceptions occurred during the run!")
|
|
if exitstatus == 0:
|
|
exitstatus = 1
|
|
while not self.exc_queue.empty():
|
|
msg, exc, exc_traceback = self.exc_queue.get()
|
|
if msg:
|
|
self.warn("ERROR: %s\n %s" % (msg, exc))
|
|
else:
|
|
self.warn("ERROR: %s" % exc)
|
|
if exc_traceback:
|
|
self.warn("\nTraceback:\n%s" % "".join(
|
|
traceback.format_tb(exc_traceback)))
|
|
|
|
if errormsg and errortitle:
|
|
self.warn('ERROR: %s\n\n%s\n' % (errortitle, errormsg))
|
|
elif errormsg:
|
|
self.warn('%s\n' % errormsg)
|
|
if self.uidval_problem:
|
|
self.warn('At least one folder skipped due to UID validity problem')
|
|
if exitstatus == 0:
|
|
exitstatus = 2
|
|
sys.exit(exitstatus)
|
|
|
|
def threadExited(self, thread):
|
|
"""Called when a thread has exited normally.
|
|
|
|
Many UIs will just ignore this."""
|
|
|
|
self.delThreadDebugLog(thread)
|
|
self.unregisterthread(thread)
|
|
|
|
# Hooks
|
|
|
|
def callhook(self, msg):
|
|
if self.dryrun:
|
|
self.info("[DRYRUN] {0}".format(msg))
|
|
else:
|
|
self.info(msg)
|
|
|
|
# Other
|
|
|
|
def sleep(self, sleepsecs, account):
|
|
"""This function does not actually output anything, but handles
|
|
the overall sleep, dealing with updates as necessary. It will,
|
|
however, call sleeping() which DOES output something.
|
|
|
|
:returns: 0/False if timeout expired, 1/2/True if there is a
|
|
request to cancel the timer.
|
|
"""
|
|
|
|
abortsleep = False
|
|
while sleepsecs > 0 and not abortsleep:
|
|
if account.get_abort_event():
|
|
abortsleep = True
|
|
else:
|
|
abortsleep = self.sleeping(10, sleepsecs)
|
|
sleepsecs -= 10
|
|
self.sleeping(0, 0) # Done sleeping.
|
|
return abortsleep
|
|
|
|
def sleeping(self, sleepsecs, remainingsecs):
|
|
"""Sleep for sleepsecs, display remainingsecs to go.
|
|
|
|
Does nothing if sleepsecs <= 0.
|
|
Display a message on the screen if we pass a full minute.
|
|
|
|
This implementation in UIBase does not support this, but some
|
|
implementations return 0 for successful sleep and 1 for an
|
|
'abort', ie a request to sync immediately.
|
|
"""
|
|
|
|
if sleepsecs > 0:
|
|
if remainingsecs // 60 != (remainingsecs - sleepsecs) // 60:
|
|
self.logger.debug("Next refresh in %.1f minutes" % (
|
|
remainingsecs / 60.0))
|
|
time.sleep(sleepsecs)
|
|
return 0
|