2 fix_imap_internaldate.py - Fix the INTERNALDATE field on IMAP servers
4 Copyright (c) 2012 Intra2net AG
5 Author: Plamen Dimitrov
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
21 # python version handling
25 print("This module needs python version 3 or later.")
28 from mail_date_parser import MailDateParser
29 from mail_iterator import MailIterator
30 from caching_data import CachingData
33 """Interprets command arguments and initializes configuration and logger.
34 Then begins mail synchronization."""
37 parser = argparse.ArgumentParser(description="Fix the INTERNALDATE field on IMAP servers. "
38 "Small tool to fix the IMAP internaldate "
39 "in case it's too much off compared to the last date "
40 "stored in the received lines.")
41 parser.add_argument('-u', '--update', dest='test_mode', action='store_false',
42 default=True, help='update all e-mails and exit test mode')
44 # config and logging setup
45 config = load_configuration()
46 prepare_logger(config)
47 args = parser.parse_args()
49 logging.info("Testing mode initiated. No message will be modified on the server.")
51 logging.info("Update mode initiated. Messages will be modified.")
53 # proceed to main functionality
55 synchronize_csv(config, args.test_mode)
56 except KeyboardInterrupt:
57 logging.info("Script was interrupted by the user.")
61 def load_configuration():
62 """Loads the script configuration from a file or creates such."""
63 config = configparser.RawConfigParser()
64 success = config.read('confscript.cfg')
66 config.add_section('basic_settings')
67 config.set('basic_settings', 'file_log_level', logging.INFO)
68 config.set('basic_settings', 'console_log_level', logging.INFO)
69 config.set('basic_settings', 'imap_server', 'imap.company.com')
70 config.set('basic_settings', 'tolerance', 30)
71 with open('confscript.cfg', 'w') as configfile:
72 config.write(configfile)
73 configfile.write("# 0 NOTSET, 10 DEBUG, 20 INFO, 30 WARNING, 40 ERROR, 50 CRITICAL")
76 def prepare_logger(config):
77 """Sets up the logging functionality"""
80 with open('fix_imap_internaldate.log', 'w'):
83 # add basic configuration
84 logging.basicConfig(filename='fix_imap_internaldate.log',
85 format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
86 level=config.getint('basic_settings', 'file_log_level'))
88 # add a handler for a console output
89 console = logging.StreamHandler()
90 console.setLevel(config.getint('basic_settings', 'console_log_level'))
91 formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
92 console.setFormatter(formatter)
93 logging.getLogger('').addHandler(console)
96 def synchronize_csv(config, test_mode):
97 """Iterates through csv list of users and synchronizes their messages."""
99 # initialize loop permanent data
100 caching_data = CachingData()
101 date_parser = MailDateParser()
102 server = config.get('basic_settings', 'imap_server')
103 tolerance = config.getint('basic_settings', 'tolerance') * 60
105 # iterate through the users in the csv data
106 user_reader = csv.DictReader(open("userdata.csv", "r"), delimiter=',')
107 for user in user_reader:
109 session = MailIterator(server, user['username'], user['password'])
110 except UserWarning as ex:
113 for mailbox in session:
115 box = caching_data.retrieve_cached_mailbox(mailbox[0], mailbox[1], user['username'])
116 mail_ids = session.fetch_messages()
117 new_ids = box.synchronize(mail_ids, tolerance)
118 logging.info("%s new messages out of %s found in %s.", len(new_ids), len(mail_ids), box.name)
119 except UserWarning as ex:
124 fetched_internal_date = session.fetch_internal_date(mid)
125 internal_date = date_parser.extract_internal_date(fetched_internal_date)
126 fetched_received_date = session.fetch_received_date(mid)
127 received_date = date_parser.extract_received_date(fetched_received_date)
128 if(received_date==""):
129 logging.debug("No received date could be found in message uid: %s - mailbox: %s - user: %s.",
130 mid.decode('iso-8859-1'), box.name, box.owner)
131 box.no_received_field += 1
133 except UserWarning as ex:
136 if(date_parser.compare_dates(received_date, internal_date, tolerance)):
137 logging.warning("Date conflict found in message uid: %s - mailbox: %s - user: %s.\nInternal date %s is different from received date %s from RECEIVED header:\n%s.",
138 mid.decode('iso-8859-1'), box.name, box.owner,
139 internal_date.strftime("%d %b %Y %H:%M:%S"),
140 received_date.strftime("%d %b %Y %H:%M:%S"),
141 fetched_received_date.split("Received:")[1])
144 session.update_message(mid, box.name, received_date)
145 except UserWarning as ex:
149 # count total emails for every user and mailbox
150 box.date_conflicts += 1
152 # if all messages were successfully fixed confirm caching
156 # final report on date conflicts
157 caching_data.report_conflicts()
160 if(__name__ == "__main__"):