2 ## vim:set et ts=2 sw=2 ai:
3 # Send email reminders to users having sizable homedirs.
5 # Copyright (c) 2013 Philipp Kern <pkern@debian.org>
6 # Copyright (c) 2013, 2014 Peter Palfrader <peter@palfrader.org>
7 # Copyright (c) 2013 Luca Filipozzi <lfilipoz@debian.org>
9 # Permission is hereby granted, free of charge, to any person obtaining a copy
10 # of this software and associated documentation files (the "Software"), to deal
11 # in the Software without restriction, including without limitation the rights
12 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 # copies of the Software, and to permit persons to whom the Software is
14 # furnished to do so, subject to the following conditions:
16 # The above copyright notice and this permission notice shall be included in
17 # all copies or substantial portions of the Software.
19 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 from collections import defaultdict
28 from dsa_mq.connection import Connection
29 from dsa_mq.config import Config
31 import email.mime.text
34 from optparse import OptionParser
43 # avoid base64 encoding for utf-8
44 email.charset.add_charset('utf-8', email.charset.SHORTEST, email.charset.QP)
46 parser = OptionParser()
47 parser.add_option("-D", "--dryrun",
48 action="store_true", default=False,
51 parser.add_option("-d", "--debug",
52 action="store_true", default=False,
53 help="Enable debug output")
55 (options, args) = parser.parse_args()
56 options.section = 'dsa-homedirs'
57 options.config = '/etc/dsa/pubsub.conf'
58 config = Config(options)
60 'rabbit_userid': config.username,
61 'rabbit_password': config.password,
62 'rabbit_virtual_host': config.vhost,
63 'rabbit_hosts': ['pubsub02.debian.org', 'pubsub01.debian.org'],
68 SENDMAIL_COMMAND = ['/bin/cat']
69 RM_COMMAND = ['/bin/echo', 'Would remove']
71 SENDMAIL_COMMAND = ['/usr/sbin/sendmail', '-t', '-oi']
72 RM_COMMAND = ['/bin/rm', '-rf']
75 { 'size': 10240, 'notifyafter': 5, 'deleteafter': 40 },
76 { 'size': 1024, 'notifyafter': 10, 'deleteafter': 50 },
77 { 'size': 100, 'notifyafter': 30, 'deleteafter': 90 },
78 { 'size': 20, 'notifyafter': 90, 'deleteafter': 150 },
79 { 'size': 5, 'deleteafter': 700 }
81 EXCLUDED_USERNAMES = ['lost+found', 'debian', 'buildd', 'd-i']
82 MAIL_FROM = 'debian-admin (via Cron) <bulk@admin.debian.org>'
83 MAIL_TO = '{username}@{hostname}.debian.org'
84 MAIL_CC = 'debian-admin (bulk sink) <bulk@admin.debian.org>'
85 MAIL_REPLYTO = 'debian-admin <dsa@debian.org>'
86 MAIL_SUBJECT = 'Please clean up ~{username} on {hostname}.debian.org'
90 Thanks for your porting effort on {hostname}!
92 Please note that, on most porterboxes, /home is quite small, so please
93 remove files that you do not need anymore.
95 For your information, you last logged into {hostname} {days_ago} days
96 ago, and your home directory there is {homedir_size} MB in size.
98 If you currently do not use {hostname}, please keep ~{username} under
101 Please assist us in freeing up space by deleting schroots, also.
105 Debian System Administration Team via Cron
107 PS: A reply is not required.
110 class Error(Exception):
113 class SendmailError(Error):
116 class LastlogTimes(dict):
117 LASTLOG_STRUCT_32 = '=L32s256s'
118 LASTLOG_STRUCT_64 = '=Q32s256s'
121 record_size_32 = struct.calcsize(self.LASTLOG_STRUCT_32)
122 record_size_64 = struct.calcsize(self.LASTLOG_STRUCT_64)
123 lastlog_size = os.path.getsize('/var/log/lastlog')
124 if 0 == (lastlog_size % record_size_32):
125 self.LASTLOG_STRUCT = self.LASTLOG_STRUCT_32
126 record_size = record_size_32
127 elif 0 == (lastlog_size % record_size_64):
128 self.LASTLOG_STRUCT = self.LASTLOG_STRUCT_64
129 record_size = record_size_64
131 raise RuntimeError('Unknown architecture, cannot interpret /var/log/lastlog file size (%d)' % lastlog_size)
132 with open('/var/log/lastlog', 'r') as fp:
133 uid = -1 # there is one record per uid in lastlog
134 for record in iter(lambda: fp.read(record_size), ''):
135 uid += 1 # so keep incrementing uid for each record read
136 lastlog_time, _, _ = list(struct.unpack(self.LASTLOG_STRUCT, record))
138 self[pwd.getpwuid(uid).pw_name] = lastlog_time
140 # this is a normal condition
143 class HomedirSizes(dict):
145 for direntry in glob.glob('/home/*'):
146 username = os.path.basename(direntry)
148 if username in EXCLUDED_USERNAMES:
152 pwinfo = pwd.getpwnam(username)
154 if os.path.isdir(direntry):
155 logging.warning('directory %s exists on %s but there is no %s user', direntry, platform.node(), username)
158 if pwinfo.pw_dir != direntry:
159 logging.warning('home directory for %s is not %s, but that exists. confused.', username, direntry)
162 command = ['/usr/bin/du', '-ms', pwinfo.pw_dir]
163 p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
164 (stdout, stderr) = p.communicate()
165 if p.returncode != 0: # ignore errors from du
166 logging.info('%s failed:', ' '.join(command))
170 self[username] = int(stdout.split('\t')[0])
172 logging.error('could not convert size output from %s: %s', ' '.join(command), stdout)
175 class HomedirReminder(object):
177 self.lastlog_times = LastlogTimes()
178 self.homedir_sizes = HomedirSizes()
180 def notify(self, **kwargs):
181 msg = email.mime.text.MIMEText(MAIL_MESSAGE.format(**kwargs), _charset='UTF-8')
182 msg['From'] = MAIL_FROM.format(**kwargs)
183 msg['To'] = MAIL_TO.format(**kwargs)
185 msg['Cc'] = MAIL_CC.format(**kwargs)
186 if MAIL_REPLYTO != "":
187 msg['Reply-To'] = MAIL_REPLYTO.format(**kwargs)
188 msg['Subject'] = MAIL_SUBJECT.format(**kwargs)
189 msg['Precedence'] = "bulk"
190 msg['Auto-Submitted'] = "auto-generated by mail-big-homedirs"
191 p = subprocess.Popen(SENDMAIL_COMMAND, stdin=subprocess.PIPE)
192 p.communicate(msg.as_string())
193 logging.debug(msg.as_string())
194 if p.returncode != 0:
197 def remove(self, **kwargs):
199 pwinfo = pwd.getpwnam(kwargs.get('username'))
203 command = RM_COMMAND + [pwinfo.pw_dir]
204 p = subprocess.check_call(command)
207 current_time = time.time()
211 for user in set(self.homedir_sizes.keys()) | \
212 set(self.lastlog_times.keys()):
214 'homedir': self.homedir_sizes.get(user, 0),
215 'lastlog': self.lastlog_times.get(user, 0),
219 'timestamp': current_time,
221 'host': platform.node(),
223 conn = Connection(conf=mq_conf)
224 conn.topic_send(config.topic,
226 exchange_name=config.exchange,
229 logging.error("Error sending: %s" % e)
234 for username, homedir_size in self.homedir_sizes.iteritems():
236 realname = pwd.getpwnam(username).pw_gecos.decode('utf-8').split(',', 1)[0]
239 lastlog_time = self.lastlog_times.get(username, 0)
240 days_ago = int( (current_time - lastlog_time) / 3600 / 24 )
242 'hostname': platform.node(),
243 'username': username,
244 'realname': realname,
245 'homedir_size': homedir_size,
252 if homedir_size > x['size'] and 'notifyafter' in x and days_ago >= x['notifyafter']:
254 if homedir_size > x['size'] and 'deleteafter' in x and days_ago >= x['deleteafter']:
258 self.remove(**kwargs)
260 self.notify(**kwargs)
262 if __name__ == '__main__':
266 logging.basicConfig(level=lvl)
267 HomedirReminder().run()