455 lines
18 KiB
Python
455 lines
18 KiB
Python
# OfflineIMAP initialization code
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# Copyright (C) 2002-2015 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 os
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import sys
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import threading
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import offlineimap.imaplib2 as imaplib
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import signal
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import socket
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import logging
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from optparse import OptionParser
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import offlineimap
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from offlineimap import accounts, threadutil, syncmaster, folder
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from offlineimap import globals
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from offlineimap.ui import UI_LIST, setglobalui, getglobalui
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from offlineimap.CustomConfig import CustomConfigParser
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from offlineimap.utils import stacktrace
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from offlineimap.repository import Repository
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import traceback
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import collections
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class OfflineImap:
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"""The main class that encapsulates the high level use of OfflineImap.
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To invoke OfflineImap you would call it with::
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oi = OfflineImap()
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oi.run()
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"""
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def run(self):
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"""Parse the commandline and invoke everything"""
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# next line also sets self.config and self.ui
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options, args = self.__parse_cmd_options()
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if options.diagnostics:
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self.__serverdiagnostics(options)
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elif options.migrate_fmd5:
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self.__migratefmd5(options)
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else:
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return self.__sync(options)
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def __parse_cmd_options(self):
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parser = OptionParser(version=offlineimap.__version__,
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description="%s.\n\n%s" %
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(offlineimap.__copyright__,
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offlineimap.__license__))
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parser.add_option("--dry-run",
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action="store_true", dest="dryrun",
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default=False,
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help="dry run mode")
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parser.add_option("--info",
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action="store_true", dest="diagnostics",
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default=False,
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help="output information on the configured email repositories")
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parser.add_option("-1",
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action="store_true", dest="singlethreading",
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default=False,
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help="(the number one) disable all multithreading operations")
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parser.add_option("-P", dest="profiledir", metavar="DIR",
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help="sets OfflineIMAP into profile mode.")
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parser.add_option("-a", dest="accounts",
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metavar="account1[,account2[,...]]",
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help="list of accounts to sync")
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parser.add_option("-c", dest="configfile", metavar="FILE",
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default=None,
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help="specifies a configuration file to use")
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parser.add_option("-d", dest="debugtype",
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metavar="type1[,type2[,...]]",
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help="enables debugging for OfflineIMAP "
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" (types: imap, maildir, thread)")
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parser.add_option("-l", dest="logfile", metavar="FILE",
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help="log to FILE")
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parser.add_option("-s",
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action="store_true", dest="syslog",
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default=False,
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help="log to syslog")
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parser.add_option("-f", dest="folders",
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metavar="folder1[,folder2[,...]]",
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help="only sync the specified folders")
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parser.add_option("-k", dest="configoverride",
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action="append",
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metavar="[section:]option=value",
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help="override configuration file option")
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parser.add_option("-o",
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action="store_true", dest="runonce",
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default=False,
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help="run only once (ignore autorefresh)")
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parser.add_option("-q",
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action="store_true", dest="quick",
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default=False,
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help="run only quick synchronizations (don't update flags)")
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parser.add_option("-u", dest="interface",
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help="specifies an alternative user interface"
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" (quiet, basic, syslog, ttyui, blinkenlights, machineui)")
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parser.add_option("--migrate-fmd5-using-nametrans",
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action="store_true", dest="migrate_fmd5", default=False,
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help="migrate FMD5 hashes from versions prior to 6.3.5")
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(options, args) = parser.parse_args()
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globals.set_options (options)
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#read in configuration file
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if not options.configfile:
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# Try XDG location, then fall back to ~/.offlineimaprc
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xdg_var = 'XDG_CONFIG_HOME'
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if not xdg_var in os.environ or not os.environ[xdg_var]:
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xdg_home = os.path.expanduser('~/.config')
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else:
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xdg_home = os.environ[xdg_var]
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options.configfile = os.path.join(xdg_home, "offlineimap", "config")
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if not os.path.exists(options.configfile):
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options.configfile = os.path.expanduser('~/.offlineimaprc')
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configfilename = options.configfile
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else:
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configfilename = os.path.expanduser(options.configfile)
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config = CustomConfigParser()
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if not os.path.exists(configfilename):
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# TODO, initialize and make use of chosen ui for logging
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logging.error(" *** Config file '%s' does not exist; aborting!"%
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configfilename)
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sys.exit(1)
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config.read(configfilename)
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#profile mode chosen?
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if options.profiledir:
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if not options.singlethreading:
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# TODO, make use of chosen ui for logging
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logging.warn("Profile mode: Forcing to singlethreaded.")
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options.singlethreading = True
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if os.path.exists(options.profiledir):
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# TODO, make use of chosen ui for logging
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logging.warn("Profile mode: Directory '%s' already exists!"%
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options.profiledir)
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else:
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os.mkdir(options.profiledir)
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threadutil.ExitNotifyThread.set_profiledir(options.profiledir)
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# TODO, make use of chosen ui for logging
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logging.warn("Profile mode: Potentially large data will be "
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"created in '%s'"% options.profiledir)
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#override a config value
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if options.configoverride:
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for option in options.configoverride:
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(key, value) = option.split('=', 1)
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if ':' in key:
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(secname, key) = key.split(':', 1)
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section = secname.replace("_", " ")
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else:
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section = "general"
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config.set(section, key, value)
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#which ui to use? cmd line option overrides config file
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ui_type = config.getdefault('general', 'ui', 'ttyui')
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if options.interface != None:
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ui_type = options.interface
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if '.' in ui_type:
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#transform Curses.Blinkenlights -> Blinkenlights
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ui_type = ui_type.split('.')[-1]
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# TODO, make use of chosen ui for logging
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logging.warning('Using old interface name, consider using one '
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'of %s'% ', '.join(UI_LIST.keys()))
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if options.diagnostics: ui_type = 'basic' # enforce basic UI for --info
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# dry-run? Set [general]dry-run=True
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if options.dryrun:
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dryrun = config.set('general', 'dry-run', 'True')
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config.set_if_not_exists('general', 'dry-run', 'False')
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try:
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# create the ui class
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self.ui = UI_LIST[ui_type.lower()](config)
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except KeyError:
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logging.error("UI '%s' does not exist, choose one of: %s"% \
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(ui_type, ', '.join(UI_LIST.keys())))
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sys.exit(1)
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setglobalui(self.ui)
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#set up additional log files
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if options.logfile:
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self.ui.setlogfile(options.logfile)
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#set up syslog
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if options.syslog:
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self.ui.setup_sysloghandler()
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#welcome blurb
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self.ui.init_banner()
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if options.debugtype:
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self.ui.logger.setLevel(logging.DEBUG)
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if options.debugtype.lower() == 'all':
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options.debugtype = 'imap,maildir,thread'
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#force single threading?
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if not ('thread' in options.debugtype.split(',') \
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and not options.singlethreading):
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self.ui._msg("Debug mode: Forcing to singlethreaded.")
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options.singlethreading = True
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debugtypes = options.debugtype.split(',') + ['']
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for dtype in debugtypes:
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dtype = dtype.strip()
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self.ui.add_debug(dtype)
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if dtype.lower() == u'imap':
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imaplib.Debug = 5
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if options.runonce:
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# Must kill the possible default option
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if config.has_option('DEFAULT', 'autorefresh'):
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config.remove_option('DEFAULT', 'autorefresh')
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# FIXME: spaghetti code alert!
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for section in accounts.getaccountlist(config):
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config.remove_option('Account ' + section, "autorefresh")
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if options.quick:
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for section in accounts.getaccountlist(config):
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config.set('Account ' + section, "quick", '-1')
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#custom folder list specified?
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if options.folders:
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foldernames = options.folders.split(",")
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folderfilter = "lambda f: f in %s"% foldernames
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folderincludes = "[]"
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for accountname in accounts.getaccountlist(config):
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account_section = 'Account ' + accountname
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remote_repo_section = 'Repository ' + \
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config.get(account_section, 'remoterepository')
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config.set(remote_repo_section, "folderfilter", folderfilter)
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config.set(remote_repo_section, "folderincludes",
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folderincludes)
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if options.logfile:
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sys.stderr = self.ui.logfile
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socktimeout = config.getdefaultint("general", "socktimeout", 0)
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if socktimeout > 0:
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socket.setdefaulttimeout(socktimeout)
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threadutil.initInstanceLimit('ACCOUNTLIMIT',
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config.getdefaultint('general', 'maxsyncaccounts', 1))
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for reposname in config.getsectionlist('Repository'):
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for instancename in ["FOLDER_" + reposname,
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"MSGCOPY_" + reposname]:
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if options.singlethreading:
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threadutil.initInstanceLimit(instancename, 1)
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else:
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threadutil.initInstanceLimit(instancename,
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config.getdefaultint('Repository ' + reposname,
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'maxconnections', 2))
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self.config = config
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return (options, args)
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def __dumpstacks(self, context=1, sighandler_deep=2):
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""" Signal handler: dump a stack trace for each existing thread."""
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currentThreadId = threading.currentThread().ident
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def unique_count(l):
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d = collections.defaultdict(lambda: 0)
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for v in l:
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d[tuple(v)] += 1
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return list((k, v) for k, v in d.iteritems())
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stack_displays = []
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for threadId, stack in sys._current_frames().items():
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stack_display = []
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for filename, lineno, name, line in traceback.extract_stack(stack):
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stack_display.append(' File: "%s", line %d, in %s'
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% (filename, lineno, name))
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if line:
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stack_display.append(" %s" % (line.strip()))
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if currentThreadId == threadId:
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stack_display = stack_display[:- (sighandler_deep * 2)]
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stack_display.append(' => Stopped to handle current signal. ')
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stack_displays.append(stack_display)
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stacks = unique_count(stack_displays)
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self.ui.debug('thread', "** Thread List:\n")
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for stack, times in stacks:
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if times == 1:
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msg = "%s Thread is at:\n%s\n"
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else:
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msg = "%s Threads are at:\n%s\n"
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self.ui.debug('thread', msg % (times, '\n'.join(stack[- (context * 2):])))
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self.ui.debug('thread', "Dumped a total of %d Threads." %
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len(sys._current_frames().keys()))
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def __sync(self, options):
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"""Invoke the correct single/multithread syncing
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self.config is supposed to have been correctly initialized
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already."""
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try:
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pidfd = open(self.config.getmetadatadir() + "/pid", "w")
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pidfd.write(str(os.getpid()) + "\n")
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pidfd.close()
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except:
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pass
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try:
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# Honor CLI --account option, only.
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# Accounts to sync are put into syncaccounts variable.
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activeaccounts = self.config.get("general", "accounts")
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if options.accounts:
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activeaccounts = options.accounts
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activeaccounts = activeaccounts.replace(" ", "")
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activeaccounts = activeaccounts.split(",")
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allaccounts = accounts.AccountHashGenerator(self.config)
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syncaccounts = []
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for account in activeaccounts:
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if account not in allaccounts:
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if len(allaccounts) == 0:
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errormsg = "The account '%s' does not exist because no" \
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" accounts are defined!"% account
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else:
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errormsg = "The account '%s' does not exist. Valid ac" \
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"counts are: %s"% \
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(account, ", ".join(allaccounts.keys()))
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self.ui.terminate(1, errormsg=errormsg)
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if account not in syncaccounts:
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syncaccounts.append(account)
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def sig_handler(sig, frame):
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if sig == signal.SIGUSR1:
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# tell each account to stop sleeping
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accounts.Account.set_abort_event(self.config, 1)
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elif sig == signal.SIGUSR2:
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# tell each account to stop looping
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getglobalui().warn("Terminating after this sync...")
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accounts.Account.set_abort_event(self.config, 2)
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elif sig in (signal.SIGTERM, signal.SIGINT, signal.SIGHUP):
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# tell each account to ABORT ASAP (ctrl-c)
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getglobalui().warn("Terminating NOW (this may "\
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"take a few seconds)...")
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accounts.Account.set_abort_event(self.config, 3)
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if 'thread' in self.ui.debuglist:
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self.__dumpstacks(5)
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# Abort after three Ctrl-C keystrokes
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self.num_sigterm += 1
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if self.num_sigterm >= 3:
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getglobalui().warn("Signaled thrice. Aborting!")
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sys.exit(1)
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elif sig == signal.SIGQUIT:
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stacktrace.dump(sys.stderr)
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os.abort()
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self.num_sigterm = 0
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signal.signal(signal.SIGHUP, sig_handler)
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signal.signal(signal.SIGUSR1, sig_handler)
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signal.signal(signal.SIGUSR2, sig_handler)
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signal.signal(signal.SIGTERM, sig_handler)
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signal.signal(signal.SIGINT, sig_handler)
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signal.signal(signal.SIGQUIT, sig_handler)
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#various initializations that need to be performed:
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offlineimap.mbnames.init(self.config, syncaccounts)
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if options.singlethreading:
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#singlethreaded
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self.__sync_singlethreaded(syncaccounts)
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else:
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# multithreaded
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t = threadutil.ExitNotifyThread(target=syncmaster.syncitall,
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name='Sync Runner',
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kwargs = {'accounts': syncaccounts,
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'config': self.config})
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t.start()
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threadutil.exitnotifymonitorloop(threadutil.threadexited)
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if not options.dryrun:
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offlineimap.mbnames.write(True)
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self.ui.terminate()
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return 0
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except (SystemExit):
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raise
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except Exception as e:
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self.ui.error(e)
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self.ui.terminate()
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return 1
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def __sync_singlethreaded(self, accs):
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"""Executed if we do not want a separate syncmaster thread
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:param accs: A list of accounts that should be synced
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"""
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for accountname in accs:
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account = offlineimap.accounts.SyncableAccount(self.config,
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accountname)
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threading.currentThread().name = "Account sync %s"% accountname
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account.syncrunner()
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def __serverdiagnostics(self, options):
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activeaccounts = self.config.get("general", "accounts")
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if options.accounts:
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activeaccounts = options.accounts
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activeaccounts = activeaccounts.split(",")
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allaccounts = accounts.AccountListGenerator(self.config)
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for account in allaccounts:
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if account.name not in activeaccounts: continue
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account.serverdiagnostics()
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def __migratefmd5(self, options):
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activeaccounts = self.config.get("general", "accounts")
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if options.accounts:
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activeaccounts = options.accounts
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activeaccounts = activeaccounts.replace(" ", "")
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activeaccounts = activeaccounts.split(",")
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allaccounts = accounts.AccountListGenerator(self.config)
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for account in allaccounts:
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if account.name not in activeaccounts:
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continue
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localrepo = Repository(account, 'local')
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if localrepo.getfoldertype() != folder.Maildir.MaildirFolder:
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continue
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folders = localrepo.getfolders()
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for f in folders:
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f.migratefmd5(options.dryrun)
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