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67e2ec02 PD |
1 | ''' |
2 | restore-mail-inject.py - Tool to inject mails via IMAP | |
3 | ||
4 | Copyright (c) 2012 Intra2net AG | |
20760d94 PD |
5 | Author: Plamen Dimitrov and Thomas Jarosch |
6 | ||
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. | |
11 | ||
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. | |
67e2ec02 PD |
16 | ''' |
17 | ||
5737b10e | 18 | import os |
67e2ec02 | 19 | import re |
f797b0fd | 20 | import logging |
67e2ec02 PD |
21 | |
22 | MAIL_FILENAME = re.compile("^[0-9]+\.$") | |
e42bd6a5 PD |
23 | MBOXFILE_LINE = re.compile("^(.*?)\t(?:\d )?default[\t ](.*)$") |
24 | ACL_STRING = re.compile("^(.*?)[\t ](.*?)\t(.*)$") | |
67e2ec02 PD |
25 | |
26 | class FileIterator: | |
27 | """This class iterates through the e-mail files.""" | |
28 | ||
29 | # class attributes | |
67e2ec02 PD |
30 | # mailboxes created during file traversal |
31 | created_mailboxes = None | |
32 | # mailboxes to update during file traversal | |
33 | acl_mailboxes = None | |
34 | ||
e42bd6a5 | 35 | def __init__(self): |
67e2ec02 | 36 | """Creates a connection and a user session.""" |
0cf4dc33 | 37 | |
e42bd6a5 PD |
38 | self.created_mailboxes = [] |
39 | self.acl_mailboxes = [] | |
67e2ec02 | 40 | |
67e2ec02 PD |
41 | return |
42 | ||
38f15e57 PD |
43 | @classmethod |
44 | def _message_read(cls, filename): | |
67e2ec02 | 45 | """Retrieves a message from the message file.""" |
0cf4dc33 | 46 | |
67e2ec02 PD |
47 | try: |
48 | with open(filename, "r") as msgfile: | |
49 | message = msgfile.read() | |
f797b0fd PD |
50 | except IOError: |
51 | logging.warning("Could not open the e-mail file %s", filename) | |
52 | raise | |
0cf4dc33 | 53 | |
67e2ec02 PD |
54 | return message |
55 | ||
38f15e57 PD |
56 | @classmethod |
57 | def load_mailbox_list(cls, mboxlistfile = ""): | |
0cf4dc33 PD |
58 | """Load the list of mailboxes and acl rights for each from file.""" |
59 | ||
b0169e56 | 60 | mboxdb = {} |
e42bd6a5 PD |
61 | if mboxlistfile != "": |
62 | try: | |
63 | with open(mboxlistfile, 'r') as acl_file: | |
64 | for line in acl_file: | |
20760d94 | 65 | |
b0169e56 | 66 | acls = {} |
79c28101 PD |
67 | try: |
68 | linedata = MBOXFILE_LINE.match(line).groups() | |
69 | except AttributeError: | |
38f15e57 | 70 | logging.warning("Illegal line in mailbox list dump: %s", line) |
f797b0fd | 71 | continue |
b0169e56 | 72 | key = linedata[0] |
e42bd6a5 | 73 | aclstr = linedata[1] |
79c28101 | 74 | |
b0169e56 | 75 | # loop through acl rights string and build dictionary of users and rights |
e42bd6a5 | 76 | while(aclstr != ""): |
79c28101 PD |
77 | try: |
78 | acldata = ACL_STRING.match(aclstr).groups() | |
79 | except AttributeError: | |
80 | logging.warning("Illegal acl string in mailbox list dump: %s", line) | |
81 | aclstr = "" | |
f797b0fd | 82 | continue |
e42bd6a5 | 83 | aclstr = acldata[2] |
38f15e57 | 84 | acls[acldata[0]] = acldata[1] |
b0169e56 PD |
85 | |
86 | mboxdb[key] = acls | |
e42bd6a5 | 87 | except IOError: |
38f15e57 | 88 | logging.warning("Could not open mboxlist file %s", mboxlistfile) |
0cf4dc33 | 89 | |
e42bd6a5 PD |
90 | return mboxdb |
91 | ||
67e2ec02 PD |
92 | def load_mails(self, filepath, mailpath): |
93 | """Loads all e-mails from file hierarchy. | |
94 | This recursive generator always returns a tuple of | |
95 | the next found (e-mail, mailbox to store, internaldate).""" | |
0cf4dc33 | 96 | |
38f15e57 | 97 | logging.debug("Entered directory %s -> %s", filepath, mailpath) |
67e2ec02 PD |
98 | try: |
99 | filepath = os.path.abspath(filepath) | |
100 | os.chdir(filepath) | |
101 | except OSError: | |
38f15e57 | 102 | logging.warning("Can't open the directory %s", filepath) |
67e2ec02 PD |
103 | return |
104 | # mark mailboxes that should be created | |
105 | self.created_mailboxes.append(mailpath) | |
20760d94 | 106 | |
67e2ec02 PD |
107 | subpaths = os.listdir(filepath) |
108 | for subpath in subpaths: | |
e42bd6a5 | 109 | if subpath == "." or subpath == "..": |
67e2ec02 PD |
110 | continue |
111 | new_filepath = filepath + "/" + subpath | |
20760d94 PD |
112 | |
113 | # if path is file validate name and inject | |
67e2ec02 | 114 | if (os.path.isfile(new_filepath)): |
e42bd6a5 | 115 | if os.path.getsize(new_filepath) == 0: |
38f15e57 | 116 | logging.info("Skipping empty file %s", subpath) |
67e2ec02 | 117 | else: |
e42bd6a5 | 118 | if MAIL_FILENAME.match(subpath): |
38f15e57 | 119 | logging.info("Injecting file %s", subpath) |
67e2ec02 PD |
120 | try: |
121 | message = self._message_read(new_filepath) | |
122 | # suggest file modification date for internaldate | |
123 | yield (message, mailpath, os.path.getmtime(new_filepath)) | |
f797b0fd | 124 | except IOError: |
38f15e57 | 125 | logging.warning("Could not retrieve mail from the file %s", new_filepath) |
67e2ec02 | 126 | else: |
20760d94 PD |
127 | |
128 | # if path is directory do recursive call | |
e42bd6a5 | 129 | if os.path.isdir(new_filepath): |
67e2ec02 PD |
130 | # cyrus ^ vs . storage replacement |
131 | subpath = subpath.replace("^", ".") | |
132 | new_mailpath = mailpath + "/" + subpath | |
38f15e57 | 133 | logging.debug("Inserting mails from directory %s into mailbox %s", new_filepath, new_mailpath) |
67e2ec02 PD |
134 | # load_mails($mboxdbref, $origuser, $targetuser) |
135 | rcrs_generator = self.load_mails(new_filepath, new_mailpath) | |
136 | # you enter the generator in the for loop | |
137 | for rcr in rcrs_generator: | |
138 | yield rcr | |
38f15e57 | 139 | logging.debug("Done with directory %s and mailbox %s", new_filepath, new_mailpath) |
20760d94 | 140 | |
67e2ec02 PD |
141 | # mark mailboxes that need acl update |
142 | self.acl_mailboxes.append(mailpath) | |
0cf4dc33 | 143 | |
b2bbd1f5 | 144 | return |