#!/usr/bin/python3
# -*- coding: utf-8 -*-

# docs/COPYING 2a + DRY: https://github.com/getmail6/getmail6
# Please refer to the git history regarding who changed what and when in this file.

import sys

import os
import os.path
import time
import configparser as ConfigParser
import netrc
import poplib
import imaplib
import pprint
from optparse import OptionParser, OptionGroup
import socket
import signal
import errno
import getpass

# Optional gnome-keyring integration
try:
    import gnomekeyring
    import glib
    glib.set_application_name('getmail')
    # And test to see if it's actually available
    if not gnomekeyring.is_available():
        gnomekeyring = None
except ImportError:
    gnomekeyring = None
# Optional Python keyring integration
try:
    import keyring
except ImportError:
    keyring = None

# Unix only
try:
    import syslog
except ImportError:
    pass

try:
    from getmailcore import __version__, __license__, \
        retrievers, destinations,  filters, logging
    from getmailcore.exceptions import *
    from getmailcore.utilities import eval_bool, logfile, format_params, \
        address_no_brackets, expand_user_vars
except ImportError as o:
    sys.stderr.write('ImportError:  %s\n' % o)
    sys.exit(127)

log = logging.Logger()
log.addhandler(sys.stdout, logging.INFO, maxlevel=logging.INFO)
log.addhandler(sys.stderr, logging.WARNING)

def blurb():
    log.info('getmail version %s\n' % __version__)
    log.info('Copyright (C) 1998-2026 Charles Cazabon and others. '
             'Licensed under %s.\n'%__license__)

options_bool = (
    'read_all',
    'delete',
    'delivered_to',
    'received',
    'message_log_verbose',
    'message_log_syslog',
    'fingerprint',
    'use_netrc',
    'to_oldmail_on_each_mail',
    'only_oldmail_file',
    'skip_imap_fetch_size',
    'mark_read',
)
options_int = (
    'delete_after',
    'delete_bigger_than',
    'max_message_size',
    'max_messages_per_session',
    'max_bytes_per_session',
    'verbose',
)
options_str = (
    'message_log',
    'netrc_file',
)

options_defaults = {
    'rcfile' : 'getmailrc',

    'verbose' : 1,
    'read_all' : True,
    'delete' : False,
    'delete_after' : 0,
    'delete_bigger_than' : 0,
    'max_message_size' : 0,
    'max_messages_per_session' : 0,
    'max_bytes_per_session' : 0,
    'delivered_to' : True,
    'received' : True,
    'message_log' : None,
    'message_log_verbose' : False,
    'message_log_syslog' : False,
    'logfile' : None,
    'fingerprint' : False,
    'use_netrc' : False,
    'netrc_file' : None,
    'to_oldmail_on_each_mail' : False,
    'only_oldmail_file': False,
    'skip_imap_fetch_size' : False,
    'mark_read': False,
}




#######################################
def convert_to_sigint(unused1, unused2):
    """Catch a SIGTERM and raise a SIGINT so getmail exits normally and does
    cleanup if killed with default signal.
    """
    raise KeyboardInterrupt('from signal')

signal.signal(signal.SIGTERM, convert_to_sigint)

#######################################
def go(configs, idle_mailbox, only_account=[]):
    """Main code.

    Returns True if all goes well, False if any error condition occurs.
    """
    blurb() # needed by docs/COPYING 2c
    summary = []
    errorexit = False
    idling = False

    if len(configs) > 1 and idle_mailbox is not None:
        log.info('more than one config file given with --idle, ignoring\n')
        idle_mailbox = None

    for (configfile, retriever, _filters, destination, options) in configs:
        username = retriever.conf.get('username')
        if only_account and len(only_account) > 0 and username not in only_account:
            continue

        if options['skip_imap_fetch_size'] and (
                options['max_message_size'] or
                options['max_bytes_per_session'] or
                options['delete_bigger_than']):
            log.error('%s: skipping, because skip_imap_fetch_size not valid with any of '
                    'max_message_size max_bytes_per_session delete_bigger_than.\n'
                    % retriever)
            continue
        if options['read_all'] and not options['delete']:
            if idle_mailbox is not None:
                # This is a nonsense combination of options; every time the
                # server returns from IDLE, all messages will be re-retrieved.
                log.error('%s: IDLE %s, read_all, and not delete - bad '
                          'combination, skipping\n'
                          % (retriever,idle_mailbox))
                continue
            else:
                # Slightly less nonsensical, but still weird.
                log.warning('%s: read_all and not delete -- all messages will '
                            'be retrieved each time getmail is run\n'
                            % retriever)

        oplevel = options['verbose']
        logverbose = options['message_log_verbose']
        now = int(time.time())
        msgs_retrieved = 0
        bytes_retrieved = 0
        msgs_skipped = 0
        if options['message_log_syslog']:
            syslog.openlog('getmail', 0, syslog.LOG_MAIL)
        try:
            if not idling:
                log.info('%s:\n' % retriever)
                logline = 'Initializing %s:' % retriever
                if options['logfile'] and logverbose:
                    options['logfile'].write(logline)
                if options['message_log_syslog'] and logverbose:
                    syslog.syslog(syslog.LOG_INFO, logline)
                retriever.initialize(options)
                destination.retriever_info(retriever)
                # session ready for idling
                idling = idle_mailbox is not None

            for mailbox in retriever.mailboxes:
                if mailbox:
                    # For POP this is None and uninteresting
                    log.debug('  checking mailbox %s ...\n' % mailbox)
                try:
                    retriever.select_mailbox(mailbox)
                except getmailMailboxSelectError as o:
                    errorexit = True
                    log.info('  mailbox %s not selectable (%s) - verify the '
                                'mailbox exists and you have sufficient '
                                'permissions\n' % (mailbox, o))
                    continue
                nummsgs = len(retriever)
                fmtlen = len(str(nummsgs))
                for (idx, msgid) in enumerate(retriever):
                    log.debug('  message %s ...\n' % msgid)
                    idx += 1
                    retrieve = False
                    reason = 'seen'
                    delete = False
                    timestamp = retriever.oldmail.get(msgid, None)
                    size = retriever.getmsgsize(msgid)
                    info = ('msg %*d/%*d (%d bytes)'
                            % (fmtlen, idx, fmtlen, nummsgs, size))
                    if mailbox:
                        info = '[%s] '%mailbox + info
                    logline = '%s msgid %s' % (info, msgid)
                    if options['read_all'] or timestamp is None:
                        retrieve = True
                    if options['only_oldmail_file']:
                        retriever.delivered(msgid)
                        retrieve = False
                        reason = 'only oldmail file option'
                    if (options['max_message_size']
                            and size > options['max_message_size']):
                        retrieve = False
                        reason = 'oversized'
                    if (options['max_bytes_per_session']
                            and (bytes_retrieved + size)
                                > options['max_bytes_per_session']):
                        retrieve = False
                        reason = 'would surpass max_bytes_per_session'
                    try:
                        if retrieve:
                            try:
                                msg = retriever.getmsg(msgid)
                            except (getmailRetrievalError,getmailConfigurationError) as o:
                                # Check if xoauth2 token was expired
                                # (Exchange Online only)
                                if 'AccessTokenExpired' in str(o):
                                    log.warn('Retrieval error: %s\n' % o)
                                    idling = False
                                    break
                                errorexit = True
                                log.error(
                                    'Retrieval error: %s\n'
                                    'Server for %s is broken; '
                                    'offered message %s but failed to provide it.  '
                                    'Please notify the administrator of the '
                                    'server.  Skipping message...\n'
                                    % (o, retriever, msgid)
                                )
                                continue
                            msgs_retrieved += 1
                            bytes_retrieved += size
                            if oplevel > 1:
                                info += (' from <%s>'
                                         % address_no_brackets(msg.sender))
                                if msg.recipient is not None:
                                    info += (' to <%s>'
                                             % address_no_brackets(msg.recipient))
                            logline += (' from <%s>'
                                        % address_no_brackets(msg.sender))
                            if msg.recipient is not None:
                                logline += (' to <%s>'
                                            % address_no_brackets(msg.recipient))

                            for mail_filter in _filters:
                                log.debug('    passing to filter %s\n'
                                          % mail_filter)
                                msg = mail_filter.filter_message(msg, retriever)
                                if msg is None:
                                    log.debug('    dropped by filter %s\n'
                                              % mail_filter)
                                    info += (' dropped by filter %s'
                                             % mail_filter)
                                    logline += (' dropped by filter %s'
                                                % mail_filter)
                                    retriever.delivered(msgid)
                                    break

                            if msg is not None:
                                r = destination.deliver_message(msg,
                                    options['delivered_to'], options['received']==True and msgid)
                                log.debug('    delivered to %s\n' % r)
                                info += ' delivered'
                                if oplevel > 1:
                                    info += (' to %s' % r)
                                logline += (' delivered to %s' % r)
                                retriever.delivered(msgid)
                            if options['delete']:
                                delete = True
                        else:
                            logline += ' not retrieved (%s)' % reason
                            msgs_skipped += 1
                            log.debug('    not retrieving (timestamp %s)\n'
                                      % timestamp)
                            if oplevel > 1:
                                info += ' not retrieved (%s)' % reason

                        if (options['delete_after'] and timestamp
                                and (now - timestamp) / 86400
                                    >= options['delete_after']):
                            log.debug(
                                '    older than %d days (%s seconds), will delete\n'
                                % (options['delete_after'], (now - timestamp))
                            )
                            delete = True

                        if options['delete'] and timestamp:
                            log.debug('    will delete\n')
                            delete = True

                        if (options['delete_bigger_than']
                                and size > options['delete_bigger_than']):
                            log.debug('    bigger than %d, will delete\n'
                                      % options['delete_bigger_than'])
                            delete = True

                        if not retrieve and timestamp is None:
                            # We haven't retrieved this message.  Don't delete it.
                            log.debug('    not yet retrieved, not deleting\n')
                            delete = False

                        if options['only_oldmail_file']:
                            delete = False

                        if delete:
                            if retriever.delmsg(msgid):
                                log.debug('    deleted\n')
                                info += ', deleted'
                                logline += ', deleted'

                    except getmailDeliveryError as o:
                        errorexit = True
                        log.error('Delivery error (%s)\n' % o)
                        info += ', delivery error (%s)' % o
                        if options['logfile']:
                            options['logfile'].write('Delivery error (%s)' % o)
                        if options['message_log_syslog']:
                            syslog.syslog(syslog.LOG_ERR,
                                          'Delivery error (%s)' % o)

                    except getmailFilterError as o:
                        errorexit = True
                        log.error('Filter error (%s)\n' % o)
                        info += ', filter error (%s)' % o
                        if options['logfile']:
                            options['logfile'].write('Filter error (%s)' % o)
                        if options['message_log_syslog']:
                            syslog.syslog(syslog.LOG_ERR,
                                          'Filter error (%s)' % o)

                    if (retrieve or delete or oplevel > 1):
                        log.info('  %s\n' % info)
                    if options['logfile'] and (retrieve or delete or logverbose):
                        options['logfile'].write(logline)
                    if options['message_log_syslog'] and (retrieve or delete
                                                          or logverbose):
                        syslog.syslog(syslog.LOG_INFO, logline)

                    if (options['max_messages_per_session']
                            and msgs_retrieved >=
                            options['max_messages_per_session']):
                        log.debug('hit max_messages_per_session (%d), breaking\n'
                            % options['max_messages_per_session'])
                        if oplevel > 1:
                            log.info('  max messages per session (%d)\n'
                                     % options['max_messages_per_session'])
                        raise StopIteration('max_messages_per_session %d'
                                            % options['max_messages_per_session'])

        except StopIteration:
            pass

        except KeyboardInterrupt as o:
            log.warning('%s: user aborted\n' % configfile)
            if options['logfile']:
                options['logfile'].write('user aborted')

        except socket.timeout as o:
            errorexit = True
            retriever.abort()
            if type(o) == tuple and len(o) > 1:
                o = o[1]
            log.error('%s: timeout (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('timeout error (%s)' % o)

        except (poplib.error_proto, imaplib.IMAP4.abort) as o:
            errorexit = True
            retriever.abort()
            log.error('%s: protocol error (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('protocol error (%s)' % o)

        except socket.gaierror as o:
            errorexit = True
            retriever.abort()
            if type(o) == tuple and len(o) > 1:
                o = o[1]
            log.error('%s: error resolving name (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('gaierror error (%s)' % o)

        except socket.error as o:
            errorexit = True
            retriever.abort()
            if type(o) == tuple and len(o) > 1:
                o = o[1]
            log.error('%s: socket error (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('socket error (%s)' % o)

        except getmailCredentialError as o:
            errorexit = True
            retriever.abort()
            log.error('%s: credential/login error (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('credential/login error (%s)' % o)

        except getmailLoginRefusedError as o:
            retriever.abort()
            log.error('%s: login refused error (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('login refused error (%s)' % o)

        except getmailOperationError as o:
            errorexit = True
            retriever.abort()
            log.error('%s: operation error (%s)\n' % (configfile, o))
            if options['logfile']:
                options['logfile'].write('getmailOperationError error (%s)' % o)
            if options['message_log_syslog']:
                syslog.syslog(syslog.LOG_ERR,
                              'getmailOperationError error (%s)' % o)

        summary.append(
            (retriever, msgs_retrieved, bytes_retrieved, msgs_skipped)
        )

        if idle_mailbox is not None:
            log.info('  %d messages (%d bytes) retrieved, %d skipped from %s\n'
                     % (msgs_retrieved, bytes_retrieved, msgs_skipped, retriever))
        else:
            log.info('  %d messages (%d bytes) retrieved, %d skipped\n'
                     % (msgs_retrieved, bytes_retrieved, msgs_skipped))
        if options['logfile'] and logverbose:
            options['logfile'].write(
                '  %d messages (%d bytes) retrieved, %d skipped\n'
                % (msgs_retrieved, bytes_retrieved, msgs_skipped)
            )
        log.debug('retriever %s finished\n' % retriever)
        try:
            if idle_mailbox is not None and not errorexit and not retriever.supports_idle:
                log.info('--idle given, but server does not support IDLE\n')
                idle_mailbox = None

            if idle_mailbox == '': # --idle=
                mailboxes = retriever.conf.get('mailboxes', ('INBOX', ))
                if len(mailboxes) == 0 or  mailboxes == ('ALL', ):
                    idle_mailbox = 'INBOX'
                else:
                    idle_mailbox = mailboxes[0]


            if idle_mailbox and not errorexit:
                # TODO
                # Okay, so what should really happen here is that when go_idle
                # returns, getmail should use the *existing* connection to check
                # for new messages and then call go_idle again once that is
                # done. The current code layout doesn't lend itself very well to
                # that since the message download code is coupled with the
                # connection setup/teardown code.
                #
                # Therefore, we do a bit of a hack.
                # We add the current config back into configs, so that when the
                # main for loop over configs runs again, it will find the same
                # config again, and thus download the new messages and then go
                # back to IDLEing. Since the return value of go_idle changes the
                # value of idling, a failed connection will cause it to become
                # False, which will make the main go() loop reconnect, which is
                # what we want.
                # Expunge and close the mailbox to  prevent the same messages
                # being pulled again in some configurations.
                try:
                    retriever.close_mailbox()
                except imaplib.IMAP4.abort as o:
                    # Treat "abort" exception as temporary failure
                    log.info('%s: session aborted during close_mailbox (%s)\n'
                             % (configfile, o))
                    idling = False
                try:
                    if idling:
                        idling = retriever.go_idle(idle_mailbox)
                    # Returned from idle
                    retriever.set_new_timestamp()
                    configs.append(configs[0])
                    continue
                except KeyboardInterrupt as o:
                    # Because configs isn't appended to, this just means we'll
                    # quit, which is presumably what the user wanted
                    # The newline is to clear the ^C shown in terminal
                    log.info('\n')
                    pass
                except socket.error as o:
                    if o.errno != errno.ECONNRESET:
                        # Something unexpected happened
                        raise
                    #pass
                    # Just exit after a reset connection.

            retriever.quit()
        except getmailOperationError as o:
            errorexit = True
            log.debug('%s: operation error during quit (%s)\n'
                      % (configfile, o))
            if options['logfile']:
                options['logfile'].write('%s: operation error during quit (%s)'
                                         % (configfile, o))

    if sum([i for (unused, i, unused, unused) in summary]) and oplevel > 1:
        log.info('Summary:\n')
        for (retriever, msgs_retrieved, bytes_retrieved, unused) in summary:
            log.info('Retrieved %d messages (%s bytes) from %s\n'
                     % (msgs_retrieved, bytes_retrieved, retriever))

    return (not errorexit)

def imap_search_flags(imap_search_n_set):
    """
    >>> imap_search_n_set=[',']
    >>> imap_search_flags(imap_search_n_set)
    (['\\Seen'], ['UNSEEN'])
    >>> imap_search_n_set=['Unseen',',']
    >>> imap_search_flags(imap_search_n_set)
    (['\\Seen'], ['Unseen'])
    >>> imap_search_n_set=['Seen',',Seen']
    >>> imap_search_flags(imap_search_n_set)
    (['\\Seen'], ['Seen'])
    >>> imap_search_n_set=['\\Seen']
    >>> flags,search = imap_search_flags(imap_search_n_set)
    >>> '\\SEEN' in {x.upper() for x in flags}
    True

    """
    flags = []
    search = []
    ooi = imap_search_n_set
    isflag = lambda x: x[0] in {',','\\'}
    mkflag = lambda x: '\\'+(x[1:] or 'Seen')
    if ooi:
        flags = [mkflag(x) for i in ooi for x in i.split() if isflag(x)]
        search = [x for i in ooi for x in i.split() if not isflag(x)]
        search = search or ['UNSEEN']
        search = [x for x in search if x.strip()!='ALL']
    return flags,search

#######################################
def main():
    try:
        parser = OptionParser(version='%%prog %s' % __version__)
        parser.add_option(
            '-g', '--getmaildir',
            dest='getmaildir', action='store',
            help='look in DIR for config/data files', metavar='DIR'
        )
        parser.add_option(
            '-r', '--rcfile',
            dest='rcfile', action='append', default=[],
            help='load configuration from FILE (may be given multiple times)',
            metavar='FILE'
        )
        parser.add_option(
            '--dump',
            dest='dump_config', action='store_true', default=False,
            help='dump configuration and exit (debugging)'
        )
        parser.add_option(
            '--trace',
            dest='trace', action='store_true', default=False,
            help='print extended trace information (extremely verbose)'
        )
        parser.add_option(
            '-i', '--idle',
            dest='idle_mailbox', action='store', default='getmail6_with_no_idle_cli_option',
            help='maintain connection and listen for new messages in FOLDER. '
                 'Only applies if a single rc file is given with a connection '
                 'to an IMAP server that supports the IDLE command',
            metavar='FOLDER'
        )
        if gnomekeyring:
            parser.add_option(
                '--store-password-in-gnome-keyring',
                dest='store_gnome_keyring', action='store_true', default=False,
                help='store the POP/IMAP password in the Gnome keyring'
            )
        if keyring:
            parser.add_option(
                '--store-password-in-keyring',
                dest='store_keyring', action='store_true', default=False,
                help='store the POP/IMAP password using the Python keyring package'
            )
        parser.add_option(
            '-s', '--searchset',
            dest='imap_search_n_set',
            action='append',
            help=r'''search and set.
This option can be repeated.
Followed by a rfc3501 searchstring, this overrides `imap_search`.
Followed by a string starting with a comma (`,`), this overrides `imap_on_delete`.
The comma (`,`) gets converted to the IMAP flag char `\`.  A lone `,` is "\Seen".
'''
        )
        overrides = OptionGroup(
            parser, 'Overrides',
            'The following options override those specified in any '
                'getmailrc file.'
        )
        overrides.add_option(
            '-v', '--verbose',
            dest='override_verbose', action='count',
            help='operate more verbosely (may be given multiple times)'
        )
        overrides.add_option(
            '--fingerprint',
            dest='override_fingerprint', action='store_true',
            help='show SSL/TLS fingerprint and connection information'
        )
        overrides.add_option(
            '-q', '--quiet',
            dest='override_verbose', action='store_const',
            const=0,
            help='operate quietly (only report errors)'
        )
        overrides.add_option(
            '-d', '--delete',
            dest='override_delete', action='store_true',
            help='after retrieving flag as Deleted or as given by `-s,` or `-m`'
        )
        overrides.add_option(
            '-l', '--dont-delete',
            dest='override_delete', action='store_false',
            help='after retrieving do not flag messages Deleted (no effect if `-s,` or `-m` is there)'
        )
        overrides.add_option(
            '-a', '--all',
            dest='override_read_all', action='store_true',
            help='retrieve all messages'
        )
        overrides.add_option(
            '-n', '--new',
            dest='override_read_all', action='store_false',
            help='retrieve only unread messages'
        )
        overrides.add_option(
            '--to-oldmail-on-each-mail',
            dest='override_to_oldmail_on_each_mail', action='store_true',
            help='store retrieved mails in oldmail file after every mail to avoid re-download in case of session crash'
        )
        overrides.add_option(
            '--only-oldmail-file',
            dest='override_only_oldmail_file', action='store_true',
            help='generates an oldmail file of mails now on server without retreiving them (neither in the future, due to the generated oldmail file)'
        )
        overrides.add_option(
            '-m', '--mark-read',
            dest='override_mark_read', action='store_true',
            help='mark read after retrieve (synonym to `-s,`)'
        )
        parser.add_option_group(overrides)

        parser.add_option(
            '-o', '--only-account',
            dest='only_account', action='append',
            help='check specified account only (may be given multiple times)'
        )

        (options, args) = parser.parse_args(sys.argv[1:])
        if args:
            raise getmailOperationError('unknown argument(s) %s ; try --help'
                                        % args)

        if options.trace:
            log.clearhandlers()

        s = ''
        for attr in dir(options):
            if attr.startswith('_'):
                continue
            if s:
                s += ','
            s += '%s="%s"' % (attr, pprint.pformat(getattr(options, attr)))
        log.debug('parsed options:  %s\n' % s)

        if options.getmaildir is None:
            getmaildir_type = 'Default'
            xdg_config = os.environ.get('XDG_CONFIG_HOME', os.path.join(os.environ["HOME"], ".config"))
            getmaildir_xdg = os.path.join(xdg_config, 'getmail')
            getmaildir_home = os.path.join(os.environ["HOME"], ".getmail")
            if os.path.exists(getmaildir_xdg):
                getmaildir = getmaildir_xdg
            elif os.path.exists(getmaildir_home):
                getmaildir = getmaildir_home
            else:
                raise getmailOperationError('Could not find the getmail configuration directory.  mkdir ~/.config/getmail/ or specify an alternate directory with the --getmaildir option.')
        else:
            getmaildir_type = 'Specified'
            getmaildir = expand_user_vars(options.getmaildir)
        if not os.path.exists(getmaildir):
            raise getmailOperationError(
                '%s config/data dir "%s" does not exist - create '
                'or specify alternate directory with --getmaildir option'
                % (getmaildir_type, getmaildir)
            )
        if not os.path.isdir(getmaildir):
            raise getmailOperationError(
                '%s config/data dir "%s" is not a directory - fix '
                'or specify alternate directory with --getmaildir option'
                % (getmaildir_type, getmaildir)
            )
        if not os.access(getmaildir, os.W_OK):
            raise getmailOperationError(
                '%s config/data dir "%s" is not writable - fix permissions '
                'or specify alternate directory with --getmaildir option'
                % (getmaildir_type, getmaildir)
            )

        if not options.rcfile:
            if not os.path.exists(
                os.path.join(getmaildir,options_defaults['rcfile'])):
                options.rcfile = [x for x in os.listdir(getmaildir) # keep in sync with getmails
                                  if not x.endswith('~')
                                  and not x.endswith('#')
                                  and not x.startswith('oldmail-')
                                  and not x.startswith('.')
                                  and not x.endswith('.json')
                                  and not x.endswith('.swp')
                                  and not x.endswith('.bak')
                                  and os.path.isfile(os.path.join(getmaildir,x))
                                  ]
            else:
                options.rcfile.append(options_defaults['rcfile'])

        configs = []
        for filename in options.rcfile:
            path = os.path.join(getmaildir,filename)
            log.debug('processing rcfile %s\n' % path)
            if not os.path.exists(path):
                raise getmailOperationError('configuration file %s does '
                                            'not exist' % path)
            elif not os.path.isfile(path):
                raise getmailOperationError('%s is not a file' % path)
            f = open(path, 'r')
            defaultopt = {
                'verbose' : options_defaults['verbose'],
                'read_all' : options_defaults['read_all'],
                'delete' : options_defaults['delete'],
                'delete_after' : options_defaults['delete_after'],
                'delete_bigger_than' : options_defaults['delete_bigger_than'],
                'max_message_size' : options_defaults['max_message_size'],
                'max_messages_per_session' :
                    options_defaults['max_messages_per_session'],
                'max_bytes_per_session' :
                    options_defaults['max_bytes_per_session'],
                'delivered_to' : options_defaults['delivered_to'],
                'received' : options_defaults['received'],
                'logfile' : options_defaults['logfile'],
                'message_log' : options_defaults['message_log'],
                'message_log_verbose' : options_defaults['message_log_verbose'],
                'message_log_syslog' : options_defaults['message_log_syslog'],
                'fingerprint' : options_defaults['fingerprint'],
                'use_netrc' : options_defaults['use_netrc'],
                'netrc_file' : options_defaults['netrc_file'],
                'to_oldmail_on_each_mail' : options_defaults['to_oldmail_on_each_mail'],
                'only_oldmail_file' : options_defaults['only_oldmail_file'],
                'skip_imap_fetch_size' : options_defaults['skip_imap_fetch_size'],
                'mark_read': options_defaults['mark_read'],
            }
            # Python's ConfigParser .getboolean() couldn't handle booleans in
            # the defaults. Submitted a patch; they fixed it a different way.
            # But for the extant, unfixed versions, an ugly hack....
            parserdefaults = defaultopt.copy()
            for (key, value) in parserdefaults.items():
                if type(value) == bool:
                    parserdefaults[key] = str(value)

            try:
                configparser = ConfigParser.RawConfigParser(parserdefaults)
                try:
                    configparser.read_file(f)
                except AttributeError:
                    configparser.readfp(f)
                f.close()
                for option in options_bool:
                    log.debug('  looking for option %s ... ' % option)
                    if configparser.has_option('options', option):
                        log.debug('got "%s"'
                                  % configparser.get('options', option))
                        try:
                            defaultopt[option] = configparser.getboolean(
                                'options', option
                            )
                            log.debug('-> %s' % defaultopt[option])
                        except ValueError:
                            raise getmailConfigurationError(
                                'configuration file %s incorrect (option %s '
                                'must be boolean, not %s)'
                                % (path, option,
                                   configparser.get('options', option))
                            )
                    else:
                        log.debug('not found')
                    log.debug('\n')

                for option in options_int:
                    log.debug('  looking for option %s ... ' % option)
                    if configparser.has_option('options', option):
                        log.debug(
                            'got "%s"' % configparser.get('options', option)
                        )
                        try:
                            defaultopt[option] = configparser.getint('options',
                                                                 option)
                            log.debug('-> %s' % defaultopt[option])
                        except ValueError:
                            raise getmailConfigurationError(
                                'configuration file %s incorrect (option %s '
                                'must be integer, not %s)'
                                % (path, option,
                                   configparser.get('options', option))
                            )
                    else:
                        log.debug('not found')
                    log.debug('\n')

                # Message log file
                for option in options_str:
                    log.debug('  looking for option %s ... ' % option)
                    if configparser.has_option('options', option):
                        log.debug('got "%s"'
                                  % configparser.get('options', option))
                        defaultopt[option] = configparser.get('options', option)
                        log.debug('-> %s' % defaultopt[option])
                    else:
                        log.debug('not found')
                    log.debug('\n')
                if defaultopt['message_log']:
                    try:
                        defaultopt['logfile'] = logfile(defaultopt['message_log'])
                    except IOError as o:
                        raise getmailConfigurationError(
                            'error opening message_log file %s (%s)'
                            % (defaultopt['message_log'], o)
                        )

                # see if a netrc file is configured
                netrc_object = None
                if defaultopt['use_netrc']:
                    # informs user via FileNotFoundError, if file is not there
                    netrc_object = netrc.netrc(
                        defaultopt['netrc_file']
                        and expand_user_vars(defaultopt['netrc_file']))

                # Apply overrides from commandline
                for o in (
                    'override_read_all',
                    'override_delete',
                    'override_verbose',
                    'override_fingerprint',
                    'override_to_oldmail_on_each_mail',
                    'override_only_oldmail_file',
                    'override_mark_read',
                ):
                    val = getattr(options, o)
                    if val is not None:
                        option_org = o.split('_',1)[1]
                        log.debug('overriding option %s from commandline %s\n'
                                % (option_org, val))
                        defaultopt[option_org] = val
                imap_override = {}
                flags,search = imap_search_flags(options.imap_search_n_set)
                if defaultopt['mark_read']:
                    if '\\SEEN' not in {x.upper() for x in flags}:
                        flags += ['\\SEEN']
                    if 'UNSEEN' not in {x.upper() for x in search}:
                        search += ['UNSEEN']
                if flags:
                    imap_override['imap_on_delete'] = '('+' '.join(flags)+')'
                    defaultopt['delete'] = True
                if search:
                    imap_override['imap_search'] = '('+' '.join(search)+')'

                # Clear out the ConfigParser defaults before processing further
                # sections
                configparser._defaults = {}

                # Retriever
                log.debug('  getting retriever\n')
                retriever_type = configparser.get('retriever', 'type')
                log.debug('    type="%s"\n' % retriever_type)
                retriever_func = getattr(retrievers, retriever_type)
                if not callable(retriever_func):
                    raise getmailConfigurationError(
                        'configuration file %s specifies incorrect '
                        'retriever type (%s)'
                        % (path, retriever_type)
                    )
                retriever_args = {
                    'getmaildir' : getmaildir,
                    'configparser' : configparser,
                }

                for (name, value) in configparser.items('retriever'):
                    if name in ('type', 'configparser'):
                        continue
                    if name == 'password':
                        log.debug('    parameter %s=*\n' % name)
                    else:
                        log.debug('    parameter %s="%s"\n' % (name, value))
                    retriever_args[name] = value
                if netrc_object:
                    # add username and password from netrc, as read above
                    netrc_auth = netrc_object.authenticators(
                        retriever_args['server'])
                    if netrc_auth and netrc_auth[0]:
                        retriever_args['username'] = netrc_auth[0]
                    if netrc_auth and netrc_auth[2]:
                        retriever_args['password'] = netrc_auth[2]

                log.debug('    instantiating retriever %s with args %s\n'
                          % (retriever_type, format_params(retriever_args)))

                try:
                    retriever = retriever_func(**retriever_args)
                    log.debug('    checking retriever configuration for %s\n'
                              % retriever)
                    for (name, value) in imap_override.items():
                        if name in retriever:
                            retriever.conf[name] = value

                    retriever.checkconf()
                except getmailOperationError as o:
                    log.error('Error initializing retriever: %s\n' % o)
                    continue

                # Retriever is okay.  Check if user wants us to store the
                # password in a Gnome keyring for future use.
                if (gnomekeyring and options.store_gnome_keyring or
                   keyring and options.store_keyring):
                    # Need to get the password first, if the user hasn't put
                    # it in the rc file.
                    if retriever.conf.get('password', None) is not None:
                        password = retriever.conf['password']
                    elif retriever.conf.get('password_command', None):
                        # Retrieve from an arbitrary external command
                        password = retriever.run_password_command()
                    else:
                        password = getpass.getpass('Enter password for %s: ' % str(retriever))

                    if options.store_keyring:
                        keyring.set_password(
                            retriever.conf['server']
                            ,retriever.conf['username']
                            ,password)
                        log.info('Stored password in Python keyring.  Exiting.\n')
                    else:
                        gnomekeyring.set_network_password_sync(
                            # keyring=None, user, domain=None, server, object=None,
                            # protocol, authtype=None, port=0
                            None, retriever.conf['username'], None,
                            retriever.conf['server'], None, retriever.received_with,
                            None, 0, password
                        )
                        log.info('Stored password in Gnome keyring.  Exiting.\n')
                        if keyring:
                            log.info('... but Gnome keyring will not be used as you have Python keyring installed.\n')
                    raise SystemExit()

                # Destination
                log.debug('  getting destination\n')
                destination_type = configparser.get('destination', 'type')
                log.debug('    type="%s"\n' % destination_type)
                destination_func = getattr(destinations, destination_type)
                if not callable(destination_func):
                    raise getmailConfigurationError(
                        'configuration file %s specifies incorrect destination '
                        'type (%s)'
                        % (path, destination_type)
                    )
                destination_args = {'configparser' : configparser}
                for (name, value) in configparser.items('destination'):
                    if name in ('type', 'configparser'):
                        continue
                    if name == 'password':
                        log.debug('    parameter %s=*\n' % name)
                    else:
                        log.debug('    parameter %s="%s"\n' % (name, value))
                    destination_args[name] = value
                log.debug('    instantiating destination %s with args %s\n'
                          % (destination_type, format_params(destination_args)))
                destination = destination_func(**destination_args)

                # Filters
                log.debug('  getting filters\n')
                _filters = []
                filtersections =  [
                    section.lower() for section in configparser.sections()
                    if section.lower().startswith('filter')
                ]
                filtersections.sort()
                for section in filtersections:
                    log.debug('    processing filter section %s\n' % section)
                    filter_type = configparser.get(section, 'type')
                    log.debug('      type="%s"\n' % filter_type)
                    filter_func = getattr(filters, filter_type)
                    if not callable(filter_func):
                        raise getmailConfigurationError(
                            'configuration file %s specifies incorrect filter '
                            'type (%s)'
                            % (path, filter_type)
                        )
                    filter_args = {'configparser' : configparser}
                    for (name, value) in configparser.items(section):
                        if name in ('type', 'configparser'):
                            continue
                        if name == 'password':
                            log.debug('    parameter %s=*\n' % name)
                        else:
                            log.debug('    parameter %s="%s"\n' % (name, value))
                        filter_args[name] = value
                    log.debug('      instantiating filter %s with args %s\n'
                              % (filter_type, format_params(filter_args)))
                    mail_filter = filter_func(**filter_args)
                    _filters.append(mail_filter)

            except ConfigParser.NoSectionError as o:
                raise getmailConfigurationError(
                    'configuration file %s missing section (%s)' % (path, o)
                )
            except ConfigParser.NoOptionError as o:
                raise getmailConfigurationError(
                    'configuration file %s missing option (%s)' % (path, o)
                )
            except (ConfigParser.DuplicateSectionError,
                    ConfigParser.InterpolationError,
                    ConfigParser.MissingSectionHeaderError,
                    ConfigParser.ParsingError) as o:
                raise getmailConfigurationError(
                    'configuration file %s incorrect (%s)' % (path, o)
                )
            except getmailConfigurationError as o:
                raise getmailConfigurationError(
                    'configuration file %s incorrect (%s)' % (path, o)
                )

            if defaultopt['verbose'] > 2:
                defaultopt['verbose'] = 2

            if not options.trace and defaultopt['verbose'] == 0:
                log.clearhandlers()
                log.addhandler(sys.stderr, logging.WARNING)

            configs.append((os.path.basename(filename), retriever, _filters,
                            destination, defaultopt.copy()))

        if options.dump_config:
            # Override any "verbose = 0" in the config file
            log.clearhandlers()
            log.addhandler(sys.stdout, logging.INFO, maxlevel=logging.INFO)
            log.addhandler(sys.stderr, logging.WARNING)
            blurb()
            for (filename, retriever, _filters, destination, configopt) in configs:
                log.info('getmail configuration:\n')
                log.info('  getmail version %s\n' % __version__)
                log.info('  Python version %s\n' % sys.version)
                log.info('  retriever:  ')
                retriever.showconf()
                if _filters:
                    for _filter in _filters:
                        log.info('  filter:  ')
                        _filter.showconf()
                log.info('  destination:  ')
                destination.showconf()
                log.info('  options:\n')
                for name in sorted(configopt.keys()):
                    log.info('    %s : %s\n' % (name, configopt[name]))
                log.info('\n')
            sys.exit()

        # Go!
        if options.idle_mailbox=='getmail6_with_no_idle_cli_option':
            idle_mailbox = None
        else:
            idle_mailbox = options.idle_mailbox
        success = go(configs, idle_mailbox, options.only_account)
        if not success:
            raise SystemExit(127)

    except KeyboardInterrupt:
        log.warning('Operation aborted by user (keyboard interrupt)\n')
        sys.exit(0)
    except getmailConfigurationError as o:
        log.error('Configuration error: %s\n' % o)
        sys.exit(2)
    except getmailOperationError as o:
        log.error('Error: %s\n' % o)
        sys.exit(3)
    except Exception as o:
        log.critical(
            '\nException: please read docs/BUGS and include the '
            'following information in any bug report:\n\n'
        )
        log.critical('  getmail version %s\n' % __version__)
        log.critical('  Python version %s\n\n' % sys.version)
        log.critical('Unhandled exception follows:\n')
        (exc_type, value, tb) = sys.exc_info()
        import traceback
        tblist = (traceback.format_tb(tb, None)
                  + traceback.format_exception_only(exc_type, value))
        if type(tblist) != list:
            tblist = [tblist]
        for line in tblist:
            log.critical('  %s\n' % line.rstrip())
        log.critical('\nPlease also include configuration information '
                     'from running getmail\n')
        log.critical('with your normal options plus "--dump".\n')
        sys.exit(4)

#######################################
if __name__ == '__main__':
    main()
