297 lines
11 KiB
Python
297 lines
11 KiB
Python
import logging
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import textwrap
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import os
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from django.core.exceptions import ObjectDoesNotExist
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from django.utils import timezone
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from django.utils.translation import ugettext_lazy as _
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from orchestra.apps.orchestration import ServiceController
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from orchestra.apps.systemusers.backends import SystemUserBackend
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from orchestra.apps.resources import ServiceMonitor
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from orchestra.utils.humanize import unit_to_bytes
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from . import settings
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from .models import Address
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# TODO http://wiki2.dovecot.org/HowTo/SimpleVirtualInstall
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# TODO http://wiki2.dovecot.org/HowTo/VirtualUserFlatFilesPostfix
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# TODO mount the filesystem with "nosuid" option
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logger = logging.getLogger(__name__)
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class MailSystemUserBackend(ServiceController):
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verbose_name = _("Mail system users")
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model = 'mailboxes.Mailbox'
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def save(self, mailbox):
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context = self.get_context(mailbox)
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self.append(textwrap.dedent("""
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if [[ $( id %(user)s ) ]]; then
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usermod %(user)s --password '%(password)s' --shell %(initial_shell)s
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else
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useradd %(user)s --home %(home)s --password '%(password)s'
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fi
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mkdir -p %(home)s
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chmod 751 %(home)s
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chown %(user)s:%(group)s %(home)s""") % context
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)
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if hasattr(mailbox, 'resources') and hasattr(mailbox.resources, 'disk'):
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self.set_quota(mailbox, context)
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def set_quota(self, mailbox, context):
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context['quota'] = mailbox.resources.disk.allocated * unit_to_bytes(mailbox.resources.disk.unit)
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self.append(textwrap.dedent("""
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mkdir -p %(home)s/Maildir
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chown %(user)s:%(group)s %(home)s/Maildir
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if [[ ! -f %(home)s/Maildir/maildirsize ]]; then
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echo "%(quota)iS" > %(home)s/Maildir/maildirsize
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chown %(user)s:%(group)s %(home)s/Maildir/maildirsize
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else
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sed -i '1s/.*/%(quota)iS/' %(home)s/Maildir/maildirsize
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fi""") % context
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)
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def delete(self, mailbox):
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context = self.get_context(mailbox)
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self.append('mv %(home)s %(home)s.deleted' % context)
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self.append(textwrap.dedent("""
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{ sleep 2 && killall -u %(user)s -s KILL; } &
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killall -u %(user)s || true
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userdel %(user)s || true
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groupdel %(user)s || true""") % context
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)
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def get_context(self, mailbox):
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context = {
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'user': mailbox.name,
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'group': mailbox.name,
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'password': mailbox.password if mailbox.active else '*%s' % mailbox.password,
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'home': mailbox.get_home(),
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'initial_shell': '/dev/null',
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}
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return context
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class PasswdVirtualUserBackend(ServiceController):
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verbose_name = _("Mail virtual user (passwd-file)")
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model = 'mailboxes.Mailbox'
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# TODO related_models = ('resources__content_type') ?? needed for updating disk usage from resource.data
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DEFAULT_GROUP = 'postfix'
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def set_user(self, context):
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self.append(textwrap.dedent("""
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if [[ $( grep "^%(user)s:" %(passwd_path)s ) ]]; then
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sed -i 's#^%(user)s:.*#%(passwd)s#' %(passwd_path)s
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else
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echo '%(passwd)s' >> %(passwd_path)s
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fi""") % context
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)
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self.append("mkdir -p %(home)s" % context)
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self.append("chown %(uid)s:%(gid)s %(home)s" % context)
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def set_mailbox(self, context):
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self.append(textwrap.dedent("""
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if [[ ! $(grep "^%(user)s@%(mailbox_domain)s\s" %(virtual_mailbox_maps)s) ]]; then
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echo "%(user)s@%(mailbox_domain)s\tOK" >> %(virtual_mailbox_maps)s
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UPDATED_VIRTUAL_MAILBOX_MAPS=1
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fi""") % context
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)
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def generate_filter(self, mailbox, context):
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self.append("doveadm mailbox create -u %(user)s Spam" % context)
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context['filtering_path'] = settings.MAILBOXES_SIEVE_PATH % context
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filtering = mailbox.get_filtering()
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if filtering:
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context['filtering'] = '# %(banner)s\n' + filtering
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self.append("mkdir -p $(dirname '%(filtering_path)s')" % context)
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self.append("echo '%(filtering)s' > %(filtering_path)s" % context)
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else:
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self.append("rm -f %(filtering_path)s" % context)
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def save(self, mailbox):
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context = self.get_context(mailbox)
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self.set_user(context)
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self.set_mailbox(context)
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self.generate_filter(mailbox, context)
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def delete(self, mailbox):
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context = self.get_context(mailbox)
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self.append("{ sleep 2 && killall -u %(uid)s -s KILL; } &" % context)
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self.append("killall -u %(uid)s || true" % context)
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self.append("sed -i '/^%(user)s:.*/d' %(passwd_path)s" % context)
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self.append("sed -i '/^%(user)s@%(mailbox_domain)s\s.*/d' %(virtual_mailbox_maps)s" % context)
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self.append("UPDATED_VIRTUAL_MAILBOX_MAPS=1")
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# TODO delete
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context['deleted'] = context['home'].rstrip('/') + '.deleted'
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self.append("mv %(home)s %(deleted)s" % context)
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def get_extra_fields(self, mailbox, context):
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context['quota'] = self.get_quota(mailbox)
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return 'userdb_mail=maildir:~/Maildir {quota}'.format(**context)
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def get_quota(self, mailbox):
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try:
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quota = mailbox.resources.disk.allocated
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except (AttributeError, ObjectDoesNotExist):
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return ''
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unit = mailbox.resources.disk.unit[0].upper()
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return 'userdb_quota_rule=*:bytes=%i%s' % (quota, unit)
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def commit(self):
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context = {
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'virtual_mailbox_maps': settings.MAILBOXES_VIRTUAL_MAILBOX_MAPS_PATH
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}
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self.append(textwrap.dedent("""\
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[[ $UPDATED_VIRTUAL_MAILBOX_MAPS == 1 ]] && {
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postmap %(virtual_mailbox_maps)s
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}""") % context
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)
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def get_context(self, mailbox):
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context = {
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'name': mailbox.name,
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'user': mailbox.name,
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'password': mailbox.password if mailbox.active else '*%s' % mailbox.password,
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'uid': 10000 + mailbox.pk,
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'gid': 10000 + mailbox.pk,
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'group': self.DEFAULT_GROUP,
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'quota': self.get_quota(mailbox),
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'passwd_path': settings.MAILBOXES_PASSWD_PATH,
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'home': mailbox.get_home().rstrip('/'),
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'banner': self.get_banner(),
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'virtual_mailbox_maps': settings.MAILBOXES_VIRTUAL_MAILBOX_MAPS_PATH,
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'mailbox_domain': settings.MAILBOXES_VIRTUAL_MAILBOX_DEFAULT_DOMAIN,
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}
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context['extra_fields'] = self.get_extra_fields(mailbox, context)
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context['passwd'] = '{user}:{password}:{uid}:{gid}::{home}::{extra_fields}'.format(**context)
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return context
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class PostfixAddressBackend(ServiceController):
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verbose_name = _("Postfix address")
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model = 'mailboxes.Address'
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related_models = (
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('mailboxes.Mailbox', 'addresses'),
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)
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def include_virtual_alias_domain(self, context):
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self.append(textwrap.dedent("""
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[[ $(grep "^\s*%(domain)s\s*$" %(virtual_alias_domains)s) ]] || {
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echo "%(domain)s" >> %(virtual_alias_domains)s
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UPDATED_VIRTUAL_ALIAS_DOMAINS=1
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}""") % context)
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def exclude_virtual_alias_domain(self, context):
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domain = context['domain']
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if not Address.objects.filter(domain=domain).exists():
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self.append('sed -i "/^%(domain)s\s*/d" %(virtual_alias_domains)s' % context)
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def update_virtual_alias_maps(self, address, context):
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# Virtual mailbox stuff
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# destination = []
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# for mailbox in address.get_mailboxes():
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# context['mailbox'] = mailbox
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# destination.append("%(mailbox)s@%(mailbox_domain)s" % context)
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# for forward in address.forward:
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# if '@' in forward:
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# destination.append(forward)
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destination = address.destination
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if destination:
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context['destination'] = destination
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self.append(textwrap.dedent("""
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LINE="%(email)s\t%(destination)s"
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if [[ ! $(grep "^%(email)s\s" %(virtual_alias_maps)s) ]]; then
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echo "${LINE}" >> %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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else
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if [[ ! $(grep "^${LINE}$" %(virtual_alias_maps)s) ]]; then
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sed -i "s/^%(email)s\s.*$/${LINE}/" %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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fi
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fi""") % context)
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else:
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logger.warning("Address %i is empty" % address.pk)
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self.append('sed -i "/^%(email)s\s/d" %(virtual_alias_maps)s' % context)
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self.append('UPDATED_VIRTUAL_ALIAS_MAPS=1')
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def exclude_virtual_alias_maps(self, context):
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self.append(textwrap.dedent("""
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if [[ $(grep "^%(email)s\s" %(virtual_alias_maps)s) ]]; then
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sed -i "/^%(email)s\s.*$/d" %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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fi""") % context)
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def save(self, address):
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context = self.get_context(address)
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self.include_virtual_alias_domain(context)
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self.update_virtual_alias_maps(address, context)
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def delete(self, address):
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context = self.get_context(address)
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self.exclude_virtual_alias_domain(context)
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self.exclude_virtual_alias_maps(context)
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def commit(self):
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context = self.get_context_files()
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self.append(textwrap.dedent("""
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[[ $UPDATED_VIRTUAL_ALIAS_MAPS == 1 ]] && { postmap %(virtual_alias_maps)s; }
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[[ $UPDATED_VIRTUAL_ALIAS_DOMAINS == 1 ]] && { /etc/init.d/postfix reload; }
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""") % context
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)
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self.append('exit 0')
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def get_context_files(self):
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return {
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'virtual_alias_domains': settings.MAILBOXES_VIRTUAL_ALIAS_DOMAINS_PATH,
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'virtual_alias_maps': settings.MAILBOXES_VIRTUAL_ALIAS_MAPS_PATH
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}
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def get_context(self, address):
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context = self.get_context_files()
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context.update({
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'domain': address.domain,
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'email': address.email,
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'mailbox_domain': settings.MAILBOXES_VIRTUAL_MAILBOX_DEFAULT_DOMAIN,
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})
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return context
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class AutoresponseBackend(ServiceController):
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verbose_name = _("Mail autoresponse")
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model = 'mail.Autoresponse'
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class MaildirDisk(ServiceMonitor):
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"""
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Maildir disk usage based on Dovecot maildirsize file
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http://wiki2.dovecot.org/Quota/Maildir
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"""
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model = 'mailboxes.Mailbox'
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resource = ServiceMonitor.DISK
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verbose_name = _("Maildir disk usage")
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def prepare(self):
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super(MaildirDisk, self).prepare()
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current_date = self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z")
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self.append(textwrap.dedent("""\
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function monitor () {
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awk 'NR>1 {s+=$1} END {print s}' $1 || echo 0
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}"""))
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def monitor(self, mailbox):
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context = self.get_context(mailbox)
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self.append("echo %(object_id)s $(monitor %(maildir_path)s)" % context)
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def get_context(self, mailbox):
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context = {
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'home': mailbox.get_home(),
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'object_id': mailbox.pk
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}
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context['maildir_path'] = settings.MAILBOXES_MAILDIRSIZE_PATH % context
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return context
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