django-orchestra/orchestra/contrib/systemusers/backends.py

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import os
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import textwrap
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from django.utils.translation import ugettext_lazy as _
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from orchestra.contrib.orchestration import ServiceController, replace
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from orchestra.contrib.resources import ServiceMonitor
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from . import settings
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class UNIXUserBackend(ServiceController):
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"""
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Basic UNIX system user/group support based on <tt>useradd</tt>, <tt>usermod</tt>, <tt>userdel</tt> and <tt>groupdel</tt>.
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"""
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verbose_name = _("UNIX user")
model = 'systemusers.SystemUser'
actions = ('save', 'delete', 'grant_permission')
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doc_settings = (settings,
('SYSTEMUSERS_DEFAULT_GROUP_MEMBERS', 'SYSTEMUSERS_MOVE_ON_DELETE_PATH')
)
def save(self, user):
context = self.get_context(user)
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if not context['user']:
return
groups = ','.join(self.get_groups(user))
context['groups_arg'] = '--groups %s' % groups if groups else ''
# TODO userd add will fail if %(user)s group already exists
self.append(textwrap.dedent("""
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if [[ $( id %(user)s ) ]]; then
usermod %(user)s --password '%(password)s' --shell %(shell)s %(groups_arg)s
else
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useradd %(user)s --home %(home)s --password '%(password)s' --shell %(shell)s %(groups_arg)s
fi
mkdir -p %(home)s
chmod 750 %(home)s
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chown %(user)s:%(user)s %(home)s""") % context
)
if context['home'] != context['base_home']:
self.append(textwrap.dedent("""
mkdir -p %(base_home)s
chmod 750 %(base_home)s
chown %(user)s:%(user)s %(base_home)s""") % context
)
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for member in settings.SYSTEMUSERS_DEFAULT_GROUP_MEMBERS:
context['member'] = member
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self.append('usermod -a -G %(user)s %(member)s || exit_code=$?' % context)
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if not user.is_main:
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self.append('usermod -a -G %(user)s %(mainuser)s || exit_code=$?' % context)
def delete(self, user):
context = self.get_context(user)
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if not context['user']:
return
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self.append(textwrap.dedent("""\
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{ sleep 2 && killall -u %(user)s -s KILL; } &
killall -u %(user)s || true
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userdel %(user)s || exit_code=$?
groupdel %(group)s || exit_code=$?
""") % context
)
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if context['deleted_home']:
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self.append("mv %(base_home)s %(deleted_home)s || exit_code=$?" % context)
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else:
self.append("rm -fr %(base_home)s" % context)
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def grant_permission(self, user):
context = self.get_context(user)
# TODO setacl
def get_groups(self, user):
if user.is_main:
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return user.account.systemusers.exclude(username=user.username).values_list('username', flat=True)
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return list(user.groups.values_list('username', flat=True))
def get_context(self, user):
context = {
'object_id': user.pk,
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'user': user.username,
'group': user.username,
'password': user.password if user.active else '*%s' % user.password,
'shell': user.shell,
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'mainuser': user.username if user.is_main else user.account.username,
'home': user.get_home(),
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'base_home': user.get_base_home(),
}
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context['deleted_home'] = settings.SYSTEMUSERS_MOVE_ON_DELETE_PATH % context
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return replace(context, "'", '"')
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class UNIXUserDisk(ServiceMonitor):
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"""
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<tt>du -bs &lt;home&gt;</tt>
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"""
model = 'systemusers.SystemUser'
resource = ServiceMonitor.DISK
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verbose_name = _('UNIX user disk')
def prepare(self):
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super(UNIXUserDisk, self).prepare()
self.append(textwrap.dedent("""\
function monitor () {
{ du -bs "$1" || echo 0; } | awk {'print $1'}
}"""
))
def monitor(self, user):
context = self.get_context(user)
self.append("echo %(object_id)s $(monitor %(base_home)s)" % context)
def get_context(self, user):
context = {
'object_id': user.pk,
'base_home': user.get_base_home(),
}
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return replace(context, "'", '"')
class Exim4Traffic(ServiceMonitor):
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"""
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Exim4 mainlog parser for mails sent on the webserver by system users (e.g. via PHP <tt>mail()</tt>)
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"""
model = 'systemusers.SystemUser'
resource = ServiceMonitor.TRAFFIC
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verbose_name = _("Exim4 traffic")
script_executable = '/usr/bin/python'
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doc_settings = (settings,
('SYSTEMUSERS_MAIL_LOG_PATH',)
)
def prepare(self):
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mainlog = settings.SYSTEMUSERS_MAIL_LOG_PATH
context = {
'current_date': self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z"),
'mainlogs': str((mainlog, mainlog+'.1')),
}
self.append(textwrap.dedent("""\
import re
import sys
from datetime import datetime
from dateutil import tz
def to_local_timezone(date, tzlocal=tz.tzlocal()):
date = datetime.strptime(date, '%Y-%m-%d %H:%M:%S %Z')
date = date.replace(tzinfo=tz.tzutc())
date = date.astimezone(tzlocal)
return date
mainlogs = {mainlogs}
# Use local timezone
end_date = to_local_timezone('{current_date}')
end_date = int(end_date.strftime('%Y%m%d%H%M%S'))
users = {{}}
def prepare(object_id, username, ini_date):
global users
ini_date = to_local_timezone(ini_date)
ini_date = int(ini_date.strftime('%Y%m%d%H%M%S'))
users[username] = [ini_date, object_id, 0]
def monitor(users, end_date, mainlogs):
user_regex = re.compile(r' U=([^ ]+) ')
for mainlog in mainlogs:
try:
with open(mainlog, 'r') as mainlog:
for line in mainlog.readlines():
if ' <= ' in line and 'P=local' in line:
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username = user_regex.search(line).groups()[0]
try:
sender = users[username]
except KeyError:
continue
else:
date, time, id, __, __, user, protocol, size = line.split()[:8]
date = date.replace('-', '')
date += time.replace(':', '')
if sender[0] < int(date) < end_date:
sender[2] += int(size[2:])
except IOError as e:
sys.stderr.write(e)
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for username, opts in users.iteritems():
__, object_id, size = opts
print object_id, size
""").format(**context)
)
def commit(self):
self.append('monitor(users, end_date, mainlogs)')
def monitor(self, user):
context = self.get_context(user)
self.append("prepare(%(object_id)s, '%(username)s', '%(last_date)s')" % context)
def get_context(self, user):
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context = {
'username': user.username,
'object_id': user.pk,
'last_date': self.get_last_date(user.pk).strftime("%Y-%m-%d %H:%M:%S %Z"),
}
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return replace(context, "'", '"')
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class VsFTPdTraffic(ServiceMonitor):
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"""
vsFTPd log parser.
"""
model = 'systemusers.SystemUser'
resource = ServiceMonitor.TRAFFIC
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verbose_name = _('VsFTPd traffic')
script_executable = '/usr/bin/python'
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doc_settings = (settings,
('SYSTEMUSERS_FTP_LOG_PATH',)
)
def prepare(self):
vsftplog = settings.SYSTEMUSERS_FTP_LOG_PATH
context = {
'current_date': self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z"),
'vsftplogs': str((vsftplog, vsftplog+'.1')),
}
self.append(textwrap.dedent("""\
import re
import sys
from datetime import datetime
from dateutil import tz
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def to_local_timezone(date, tzlocal=tz.tzlocal()):
date = datetime.strptime(date, '%Y-%m-%d %H:%M:%S %Z')
date = date.replace(tzinfo=tz.tzutc())
date = date.astimezone(tzlocal)
return date
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vsftplogs = {vsftplogs}
# Use local timezone
end_date = to_local_timezone('{current_date}')
end_date = int(end_date.strftime('%Y%m%d%H%M%S'))
users = {{}}
months = {{
'Jan': '01',
'Feb': '02',
'Mar': '03',
'Apr': '04',
'May': '05',
'Jun': '06',
'Jul': '07',
'Aug': '08',
'Sep': '09',
'Oct': '10',
'Nov': '11',
'Dec': '12',
}}
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def prepare(object_id, username, ini_date):
global users
ini_date = to_local_timezone(ini_date)
ini_date = int(ini_date.strftime('%Y%m%d%H%M%S'))
users[username] = [ini_date, object_id, 0]
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def monitor(users, end_date, months, vsftplogs):
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user_regex = re.compile(r'\] \[([^ ]+)\] (OK|FAIL) ')
bytes_regex = re.compile(r', ([0-9]+) bytes, ')
for vsftplog in vsftplogs:
try:
with open(vsftplog, 'r') as vsftplog:
for line in vsftplog.readlines():
if ' bytes, ' in line:
username = user_regex.search(line).groups()[0]
try:
user = users[username]
except KeyError:
continue
else:
__, month, day, time, year = line.split()[:5]
date = year + months[month] + day + time.replace(':', '')
if user[0] < int(date) < end_date:
bytes = bytes_regex.search(line).groups()[0]
user[2] += int(bytes)
except IOError as e:
sys.stderr.write(e)
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for username, opts in users.items():
__, object_id, size = opts
print object_id, size
""").format(**context)
)
def monitor(self, user):
context = self.get_context(user)
self.append("prepare(%(object_id)s, '%(username)s', '%(last_date)s')" % context)
def commit(self):
self.append('monitor(users, end_date, months, vsftplogs)')
def get_context(self, user):
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context = {
'last_date': self.get_last_date(user.pk).strftime("%Y-%m-%d %H:%M:%S %Z"),
'object_id': user.pk,
'username': user.username,
}
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return replace(context, "'", '"')